JP2002175659A - Optical disk drive - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To produce various types of optical disk devices, simplify component management and unit management, and increase productivity of disk device assembly processes. A turntable (5), a first motor (3) for rotating the turntable, an optical pickup (6), a drive mechanism therefor, and a second motor (4) capable of applying a driving force to the pickup drive mechanism are mounted on a traverse base (20). A basic unit UM, a device base 10 for supporting the traverse base in a vertically rotatable manner, a disk loading mechanism, a loading drive mechanism, and a power transmission path switching mechanism, and configured to be detachable from the basic unit. And a second use state in which the basic unit and the additional part unit are integrally assembled and used. Is selectively used for use.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a so-called C
D (compact disc) or so-called DVD (digital video disc or digital versatile disc)
An optical disk device (hereinafter simply referred to as a disk device) for recording an information signal and / or reproducing the recorded information signal on an optical disk (hereinafter referred to simply as a disk) as an information recording medium such as a disk. ).

[0002]

2. Description of the Related Art As a disk device for recording an information signal on a disk as an information recording medium as described above and / or reproducing the recorded information signal, for example, an opening for inserting and removing a disk tray in a front panel of the device. A disc is mounted on a tray coming out of the opening, and then the disc is automatically pulled into a predetermined position inside the apparatus (a position to be attached to and detached from a turntable) together with the tray. What has been done is well known in the past. In a disk drive of this type, for example, in the case where a disk pulled into the apparatus is to be reproduced while rotating at a predetermined rotational speed while being mounted on a turntable and sandwiched between the disk and a clamper, The information signal recorded on the disc is reproduced by the recording / reproducing device. That is, the information signal is reproduced by moving the optical pickup for reading the signal in accordance with the track position of the signal recorded in a predetermined range on the disk.

In a disk drive of the type described above, as a basic operation requiring a motor driving force, a tray is driven to move a disk between a position where the disk is mounted on and removed from the tray and a position where the disk is mounted on and removed from the turntable inside the device. A disk loading operation for reciprocating between the disk and a disk rotating operation for driving the turntable to rotate the disk,
Three operations of a pickup feeding operation for reciprocating the optical pickup mainly between the outer peripheral side and the inner peripheral side of the disk are required. In the related art, it is general that these three operations are performed using separate motors as drive sources (that is, using a total of three motors).

On the other hand, for example, Japanese Utility Model Application Laid-Open No. 3-4968.
No. 2 (hereinafter referred to as “prior art 1”) includes:
A disk player (disk device) has been proposed in which the number of motors is reduced to two by controlling the single loading motor to rotate the disk in and out, chuck the disk, and drive the pickup in forward and reverse rotations. Have been. In the configuration according to the prior art 1, a fixed chassis is provided substantially integrally with the device case, and a turntable and a motor for driving the turntable are attached to the fixed chassis. That is, since the vertical position of the turntable is fixed, it is necessary to move the disk in the vertical direction in order to avoid interference with the turntable when inserting and removing the disk. In addition, in order to fix (clamp) a disk placed on the turntable to the turntable, it is necessary to drive the clamper side (chuck plate) up and down.

For this reason, in the disk device of the prior art 1, a disk holder for lifting the disk is provided on the disk mounting surface of the tray, and the disk holder is vertically rotated in accordance with the movement timing of the tray. Further, interference between the disk and the turntable when the disk is taken in and out is avoided. In addition, a chuck plate which is supported to be vertically rotatable with respect to the fixed chassis via the chuck arm is provided, and the chuck plate is vertically rotated in accordance with the timing of mounting and dismounting the disk, thereby fixing the disk to the turntable. And fix release. Therefore, the structure of the device and the operation of each component are considerably complicated, which is disadvantageous in simplifying the structure and stably obtaining good operation.

Further, in the disk device of the prior art 1, all the drive components except the tray and its drive system are provided on the fixed chassis, and these components have a rigid structure with respect to the fixed chassis (that is, the fixed chassis). , Rigid), when an impact load is applied to the device (disc player) or when a vibration is input, the impact load or vibration force is directly transmitted from the fixed chassis. Since this acts on each drive component, it is liable to be seriously damaged, which is disadvantageous in improving the durability of the disk device against the action of these external forces. Further, since each component is rigidly attached / supported to the fixed chassis, it is necessary to maintain the positional relationship between the components extremely accurately, so that extremely high precision is required for the component production and assembly work, Particularly when mass production is assumed, it is disadvantageous in increasing productivity.

In order to solve these problems, the applicant of the present invention has disclosed in Japanese Patent Application No. 11-23833 (hereinafter referred to as “prior art 2”) a device separate from a device base constituting a base of a device main body. A second base member (traverse base) supported to be vertically movable or rotatable with respect to the apparatus base, the turntable and a first motor for driving the turntable to rotate on the traverse base; It has a basic configuration equipped with the optical pickup and the pickup drive mechanism, and can reduce the number of motors used, can further simplify the structure, and
We have proposed an optical disk device that can improve the durability against the effects of shocks and vibrations and further improve the productivity.

In this optical disc apparatus, the traverse base has a gear (cam gear) supported at one end by a floating bush at one of the left and right ends and at one end by a floating collar and a floating spring. The first base is supported in a floating state (floating state) within a certain range (that is, within the elastic range of the floating bush, the floating collar and the floating spring) with respect to the first base. The two floating bushes also have a supporting function of supporting the traverse base vertically or rotatably with respect to the apparatus base.

In other words, the traverse base is not rigidly supported (rigidly) with respect to the device base, but within the elastic range of the cushioning members (floating bush, floating collar and floating spring). Since it is supported in a floating state with respect to the base, even when an impact load is applied to the disk device or when a vibration is input, the shock or vibration can be absorbed by the cushioning member. Vibration force can be prevented from directly acting on each mechanism component of the traverse base from the device base. That is, it is possible to improve the durability of the disk device against the effects of shock and vibration. It also has a rigid structure (that is,
As compared with the case where the mechanical parts are supported by a rigid member, the positional relationship between the parts can be adjusted within a floatable range with respect to the mechanical parts respectively attached to the apparatus base and the traverse base, and the parts can be manufactured and assembled. It is possible to set the accuracy of work to some extent low,
It will also increase productivity.

As is well known, there are various types of disk devices for recording information signals on a disk as an information recording medium and / or reproducing the recorded information signals. For example, in the case of the disk devices of the prior arts 1 and 2 described above, only a mechanism having a basic function for reproducing and / or recording an information signal, such as an optical pickup and its driving mechanism and a turntable rotating mechanism, is used. Instead, a disk loading mechanism for moving a disk between a loading position above the turntable and an unloading position outside the apparatus is incorporated into one integrated unit to constitute a disk apparatus.

However, depending on the type of the disk device, a mechanism other than the mechanism having the basic function, for example, the disk loading mechanism may be quite complicated. For example, in a disk device having a so-called changer function in which reproduction and / or recording of an information signal can be performed while sequentially switching a plurality of disks, the disk loading mechanism is inevitably complicated.

In such a case, the above-mentioned prior art 1
2, it is very difficult to incorporate a mechanism having a basic function for reproducing and / or recording an information signal and a disk loading mechanism as one integrated disk device. Therefore, in this case, a disk unit is constituted by one unit having a mechanism having the above-described basic function, and an external mechanism having a disk loading function is separately provided, and the two are used in combination. In this case, loading and unloading of the disk is performed using power outside the apparatus.

As another type of disk drive,
A so-called hop-up type is known in which the upper part of the turntable is covered with a lid (lid) that can be opened and closed, and after the lid is opened, a disc is set and taken out. In the case of such a hop-up type, generally, the setting and unloading of the disc from the turntable are performed manually, so that an automatic disc loading mechanism is not required. Therefore, in this case, basically, only the unit having the mechanism having the above-described basic function of the optical disk device is required.

[0014]

In the case where it is required to produce various types of disk drives having different structures as exemplified above, conventionally, necessary mechanical parts are prepared for each type, and In some cases, some of these mechanical components were unitized and assembled to form a disk drive.However, the main configuration of each type of disk drive is individually different and has no commonality. The management becomes very complicated and troublesome, and it is also difficult to increase the productivity in the assembly process for assembling the device.

Therefore, the present invention provides a basic function for reproducing and / or recording information signals such as an optical pickup and its driving mechanism and a turntable rotating mechanism when producing various kinds of optical disc apparatuses having different structures. By sharing a unit with a mechanism having
The object of the present invention is to simplify the component management and the unit management and to enhance the productivity of the assembling process of the disk device.

[0016]

Therefore, an optical disk apparatus according to the invention of claim 1 of the present application (hereinafter referred to as a first invention) has a turntable for rotatably supporting an optical disk, and a rotation table for rotating the turntable. A first motor to be driven;
An optical pickup for writing an information signal to and / or reading an information signal recorded on the optical disk rotated by the turntable, and moving the optical pickup reciprocally between an inner circumference and an outer circumference of the optical disk; A basic unit in which a pickup driving mechanism to be driven and a second motor capable of giving a driving force to the pickup driving mechanism are mounted on a component base, wherein the basic unit is capable of moving the component base in a vertical direction or A device base rotatably supported, a disk loading mechanism for reciprocatingly transferring the optical disk between a first position above the turntable and a second position outside the component base, and a driving force of the second motor A driving mechanism for driving the disc loading mechanism, and a transmission mechanism for transmitting the driving force of the second motor. A gear mechanism for engaging an additional component unit having a power transmission path switching mechanism for switching between a path transmitting the load driving mechanism and a path transmitting the pickup driving mechanism to the basic unit is detachable. Is provided with a mounting portion to be attached to the horn.

In this configuration, a turntable, a first motor for rotating the turntable, an optical pickup, a drive mechanism therefor, and a second motor capable of applying a driving force to the pickup drive mechanism are mounted on a component base. The basic unit includes a device base, a disc loading mechanism, a loading drive mechanism, and a power transmission path switching mechanism, and a detachable gear mechanism for engaging an additional component unit detachably attached to the basic unit. A mounting portion for mounting is provided. Therefore, by attaching and detaching the gear mechanism to and from this mounting portion, the use state in which the basic unit is used alone and the use state in which the basic unit and the additional component unit are assembled and used are used. Can be alternatively selected for use. In a use state in which the basic unit and the additional component unit are assembled and used, the component base is supported to be vertically movable or rotatable with respect to the device base.

The invention of claim 2 of the present application (hereinafter referred to as "second
The optical disc apparatus according to the present invention includes a turntable for rotatably supporting the optical disc, a first motor for driving the turntable to rotate, and writing and / or writing of information signals on the optical disc rotated by the turntable.
Alternatively, an optical pickup for reading an information signal recorded on an optical disk, a pickup driving mechanism for reciprocatingly moving the optical pickup between an inner peripheral side and an outer peripheral side of the optical disk, and applying a driving force to the pickup driving mechanism A basic unit in which a second motor to be obtained is mounted on a component base; a device base for supporting the component base in a vertically movable or rotatable manner; A disk loading mechanism that reciprocates between a second position outside the base and a loading drive mechanism that drives the disk loading mechanism with a driving force of the second motor;
A power transmission path switching mechanism for switching a transmission path of a motor driving force between a path for transmitting the driving force to the loading drive mechanism and a path for transmitting the driving force to the pickup driving mechanism; And a second use state in which the basic unit and the additional part unit are used by assembling them with each other. It is characterized in that it can be selectively used.

In this configuration, the turntable, the first motor for rotating the turntable, the optical pickup, its driving mechanism, and the second motor capable of applying a driving force to the pickup driving mechanism are mounted on the component base. A basic unit, and an additional component unit including a device base, a disc loading mechanism, a loading drive mechanism, and a power transmission path switching mechanism and configured to be detachable from the basic unit. And a second use state in which the basic unit and the additional component unit are used by assembling the basic unit and the additional component unit with each other. In the second use state, the component base is supported to be vertically movable or rotatable with respect to the device base.

Further, the invention according to claim 3 of the present application (hereinafter referred to as “the invention”)
According to a third aspect of the present invention, in the first or second aspect, the second motor is a motor capable of rotating forward and reverse, and in a use state in which the basic unit is used alone, By rotating the two motors in the first rotation direction and in the opposite direction, the optical pickup is reciprocally driven, and in a use state in which the basic unit and the additional component unit are assembled and used,
By continuously rotating the second motor in the first rotation direction, the moving operation of the optical pickup, the raising / lowering operation of the turntable, and the moving operation of the optical disk are performed substantially continuously in this order. By rotating the motor continuously in a direction opposite to the first rotation direction, each of these operations is performed substantially continuously in a reverse order to the above direction. In this configuration, in a use state in which the basic unit is used alone, the optical pickup is reciprocated by rotating one motor (second motor) in the forward direction (first rotation direction) or the reverse direction, In a use state in which the basic unit and the additional component unit are assembled and used together, 1
By sequentially rotating the motors (second motors) in the forward direction (first rotation direction) or in the reverse direction, the moving operation of the optical pickup, the raising / lowering operation of the turntable, and the disk transferring operation are performed in this order. , Or substantially continuously in the reverse direction in the reverse direction.

Further, the invention according to claim 4 of the present application (hereinafter referred to as a fourth invention) is characterized in that, in any one of the first to third inventions, the pickup driving mechanism is
A feed rack for moving the optical pickup; and a rack drive gear train including a plurality of gears for driving the feed rack. After being moved to the position, it can be further moved to a predetermined position on the inner peripheral side, and in a use state in which the basic unit and the additional component unit are used by assembling them with each other, the feed rack is moved to the predetermined position on the inner peripheral side. By moving, the feed rack is engaged with the power transmission path switching mechanism, and in this engaged state, the transmission path of the driving force of the second motor is transmitted from the path transmitted to the pickup drive mechanism to the loading drive mechanism. Side, and the feed rack moves from the predetermined position to the outer peripheral side of the disk to engage with the power transmission path switching mechanism. By releasing the state, the transmission path of the driving force of the second motor is switched from the path transmitted to the loading drive mechanism to the path transmitted to the optical pickup drive mechanism. . In this configuration, the feed rack moves the optical pickup to the innermost peripheral end position of the signal recording range of the disk and then further moves to a predetermined position on the inner peripheral side, or from this predetermined position, By moving to the outer peripheral side, the transmission path of the driving force of the second motor is switched.

Further, the invention according to claim 5 of the present application (hereinafter referred to as a fifth invention) is characterized in that, in any one of the first to fourth inventions, the basic unit and the additional component unit are different from each other. In a use state in which the component bases are used in combination with each other, the component base is disposed in an opening formed in the device base, and is supported so as to be vertically rotatable with respect to the device base about one end thereof. On the other hand, the apparatus base is provided with a cam gear having a cam groove on the outer peripheral portion which is located near the other end of the component base and moves up and down the other end of the component base, and the loading drive mechanism includes a plurality of gears. And a final output gear of the loading drive gear train meshes with an outer peripheral tooth portion of the cam gear, whereby the cam gear is rotated and Is obtained is characterized by elevating the goods based on the other end side. In this configuration, in a use state in which the basic unit and the additional component unit are used by assembling them with each other, the cam gear is rotated by power transmission from the loading drive gear train, and the other end of the component base is raised and lowered. As a result, the component is vertically rotated about the one end with respect to the first base.

Further, the invention according to claim 6 of the present application (hereinafter referred to as a sixth invention) is characterized in that, in any one of the first to fifth inventions, the component base is the same as the component base. The device is characterized in that it is supported rotatably in the vertical direction with respect to the device base via an intermediate base located between the device bases. In this configuration, the intermediate base is rotatably supported in the vertical direction with respect to the device base, and the component base is supported on the intermediate base. The support and the part-based support are performed separately.

[0024]

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. As will be described later in detail, an optical disk device according to the present embodiment (hereinafter, referred to as a disk device or simply a device) reproduces and / or reproduces information signals such as an optical pickup and its driving mechanism and a turntable rotating mechanism. A unit having a basic function for recording is mounted on a component mounting base member (hereinafter, referred to as a basic unit).
And a disk loading mechanism for moving the disk between a loading position above the turntable and an unloading position outside the apparatus in addition to the basic unit described above. It can correspond to two use states of the second use state in which other mechanisms including the same are incorporated and used in one integrated unit, and one of these use states can be selectively selected according to the application. Is used.

FIG. 1 is an overall perspective view showing an assembled state of an optical disk device (hereinafter referred to as a disk device or simply a device) according to the present embodiment, FIG. 2 is an exploded perspective view of the disk device, and FIGS. FIG. 4 is an explanatory diagram showing a part of the perspective view of FIG. 2 in an enlarged manner. Note that the assembled state shown in FIG. 1 shows a case where the optical disc apparatus 1 according to the present embodiment is used in the second use state. As shown in these drawings, the disk device 1 according to the present embodiment includes a device base 10 as a mounting base for main components of the device 1 and a support member that supports most of the drive mechanism of the device 1. Traverse base 20
And, more preferably, an intermediate base 80 disposed between the two base members 10 and 20.

The overall shape of the device base 10 and the intermediate base 80 is formed in a substantially rectangular frame shape in plan view.
As shown in FIG. 5, an inner opening 10 of the device base 10 is provided.
H, the intermediate base 80 is assembled, and further, the traverse base 20 is assembled in an inner opening 80H of the intermediate base 80. The above device base 1
0, the traverse base 20 and the intermediate base 80 correspond to the “apparatus base”, “parts base” and “intermediate base” described in the claims of the present application, respectively. Here, since the device base 10 and the intermediate base 80 are unnecessary in applications corresponding to the first use state, they are not attached.

In the disk device 1, a tray 55 for mounting and transferring a disk as an information recording medium, for example, a digital versatile disk (so-called DVD).
Reciprocates in the oblique direction in FIGS. 1 and 2 along the frame of the device base 10. That is, when the disc in the apparatus 1 is pulled out to the outside, the tray 55
When the disk is moved obliquely downward to the left in FIG.
Moves diagonally upward to the right in FIGS. 1 and 2. In the present embodiment, the disc (that is, the tray 55)
The side pulled out from the inside of the device 1 (the lower left side in FIGS. 1 and 2) is called the front side of the disk device 1, and the side into which the disk is inserted (the upper right side in FIGS. 1 and 2) is the disk. It is called the back side of the device. The upper and lower sides in FIGS. 1 and 2 are referred to as the upper and lower sides of the device 1.

The rear part of the device base 10 (FIGS. 1 and 2)
A pair of left and right intermediate base support portions 11 is provided in the upper right oblique portion of FIG. On the other hand, the intermediate base 80
Shafts 81 are provided on both sides of the rear end. Each of the intermediate base support portions 11 is formed in a semicircular notch shape that opens upward. Is rotated vertically about the horizontal straight line Lh (see FIG. 5) connecting the centers of the left and right intermediate base support portions 11 (that is, the axes of the left and right shaft portions 81). Supported as possible. Note that, for example, near the outside of each of the intermediate base support portions 11, an urging mechanism 11S (for urging the shaft portion 81 toward the support portion 11 so as to prevent the shaft portion 81 fitted to the support portion 11 from falling off). 4 (see FIG. 4).

A groove 13 (positioning groove) extending vertically is formed at the inner edge of the front portion of the device base 10. On the other hand, a projection 82 (positioning projection) is provided at a front end portion of the intermediate base 80 at a position corresponding to the positioning groove 13. The positioning of the intermediate base 80 in the left-right direction with respect to the device base 10 is accurately performed, and the vibration of the intermediate base 80 in the left-right direction with respect to the device base 10 is also suppressed.

Notches 21 are formed at both corners at the rear end of the traverse base 20 and at one corner at the front end. On the other hand, at the left and right corners inside the rear part of the intermediate base 80 and at one corner inside the front part, the notch 21
Are respectively provided. A bush 29 (floating bush) made of rubber, for example, having elasticity is attached to each of the cutouts 21, and a fixed shaft 29 </ b> S through which the bush 29 is inserted is fitted and fixed to the bush receiving portion 89 to traverse. The base 20 is supported via three floating bushes 29 in a state (floating state) in which the base 20 can float within a certain range (that is, within the elastic range of the floating bush 29) with respect to the intermediate base 80.

The floating bush 29 shown in FIG.
As shown in detail, a relatively large-diameter first member is integrally formed in a hollow shape with both ends opened and arranged in the longitudinal direction.
And second buffer portions 29a and 29b, and a relatively small-diameter mounting portion 29c located between the two buffer portions. The mounting portion 29c is formed by narrowing the space between the two buffer portions 29a and 29b into a neck shape, and is a portion to be mounted on the traverse base 20 to be floating-supported by the floating bush 29. Specifically, the floating bush 29 is formed by fitting the outer peripheral portion of the mounting portion 29c into a hole of the bush mounting plate 21b provided in the notch portion 21 of the traverse base 20. 21.

The lower end of the floating bush 29 is connected to the upper surface 89 of the bush receiving portion 89 of the intermediate base 80.
f (a bush support surface), and while the fixing hole 89h formed in the bush receiving portion 89 is aligned with the opening of the floating bush 29, the fixed shaft 29S is inserted into the hollow inside of the bush 29. It is inserted, and its tip is fitted into the fixing hole 89h of the bush receiving portion 89. Thereby, the floating bush 29 is fixed between the head 29T of the fixed shaft 29S and the bush receiving surface 89f.

That is, the floating bush 29 mounted on the notch 21 of the traverse base 20 is fixed to the bush receiving portion 89 of the intermediate base 80. Thus, through the three floating bushes 29,
The traverse base 20 is supported (floating supported) on the intermediate base 80. More preferably, the traverse base 20 is assembled to the intermediate base 80 via the floating bush 29, and in the standard state in which only the gravity of the traverse base 20 and various components mounted thereon acts on the floating bush 29. The terminal portion of the second buffer portion 29b is in contact with the bush support surface 89f with a certain elastic force.

When a vibration is applied to the disk device 1 during use or manufacture of the disk device 1 in the second use state and an exciting force that causes relative movement between the intermediate base 80 and the traverse base 20 is applied. The second buffer 2
The traverse base 20 is moved downward by the buffering action accompanying the compressive deformation in the elastic range of 9b (that is, the bush mounting plate 21b is
A vibration component (approaching f) can be effectively absorbed. It is not essential that the terminal portion of the second buffer portion 29b abuts on the bush support surface 89f in the standard state in order to obtain the vibration absorbing effect of the second buffer portion 29b. Even if a certain gap is formed between the two, only the vibration absorption is reduced by an amount corresponding to the gap, and when the relative movement amount between the intermediate base 80 and the traverse base 20 exceeds the above gap, The vibration absorbing effect can be exerted as much as the amount exceeding the gap.

When the traverse base 20 moves downward, the bush mounting plate 21b is
It will move away from the head 29T of S. At this time, if the upper end of the first buffer 29a is fixed to the head 29T of the fixed shaft 29S with, for example, an adhesive, the first buffer 29a is deformed so as to extend within its elastic range. I do. Therefore, vibration can be absorbed not only by the buffering action caused by the compression deformation of the second buffering section 29b, but also by the buffering action caused by the extensional deformation of the first buffering section 29a. Can be absorbed.

On the other hand, with respect to the vibration component in the direction in which the traverse base 20 moves upward (that is, in the direction in which the bush mounting plate 21b approaches the head 29T of the fixed shaft 29S), the elastic range of the first buffer 29a. It can be effectively absorbed by the buffering action accompanying the compression deformation in the inside. When the traverse base 20 moves upward, the bush mounting plate 21b moves away from the bush support surface 89f of the intermediate base 80. At this time,
The lower end of the second buffer 29b is connected to the bush support surface 89f.
On the other hand, if the second buffer portion 29b is fixed by an adhesive or the like, the second buffer portion 29b is deformed to extend within its elastic range. Therefore, vibration can be absorbed not only by the compression effect of the first shock absorber 29a due to the compression deformation but also by the shock absorption effect of the second shock absorber 29b due to the elongation deformation. Can be absorbed. In addition, vibration components parallel to the base surface, such as the front-rear direction and the left-right direction, of the traverse base 20 are absorbed by the deformation of the floating bush 29 within the elastic range in the horizontal direction.

As described above, the floating bush 2
9 is provided with the first and second buffer portions 29a and 29b and the mounting portion 29c, so that when the traverse base 20 vibrates, it supports the entire load of the traverse base 20,
In addition, it is possible to provide an inexpensive, easy-to-install floating device that is space-saving, inexpensive, and capable of effectively absorbing vibration while performing the function of preventing the upper and lower parts from falling off.

On the other hand, as can be clearly understood from FIGS. 4 and 5, a concave portion 12 whose peripheral edge forms a part of a circle is formed at the front edge of the inner opening 10H of the device base 10. At the center of the bottom surface of the concave portion 12, a pivot shaft 12s is erected, and a substantially cylindrical gear member 30 is mounted on the pivot shaft 12s.
The center boss 31 of the (cam gear) is rotatably fitted. The cam gear 30 has a central boss 31 inserted through the pivot shaft 12s, and a screw member 37 (floating collar) at the tip end of the pivot shaft 12s via a collar member 38 (floating collar) made of rubber, for example. Stop screw).

That is, the upper side of the cam gear 30 is stopped by the floating collar 38 and
s, and is housed in the recess 12 of the device base 10 within a certain range with respect to the device base 10 (that is, within the elastic range of the floating collar 38).
It is supported in a floating state (floating state).

The material of the floating bush 29 and the floating collar 38 is not limited to the rubber described above, and various other materials such as a soft resin having a predetermined elasticity may be used. be able to. In the present embodiment, more preferably, the floating traverse base 20 is floated so as to effectively absorb the vibration input from the outside to the traverse base 20 and effectively suppress the vibration accompanying the rotation of the turntable 5. The elasticity of the support mechanism is set. For example, the materials of the floating bush 29 and the floating collar 38 are relatively (compared to the case of the prior art 2).
Those with low elasticity (relatively hard) are selected.

The outer peripheral portion of the cam gear 30 is shown in FIGS.
As shown in detail in FIG. 29, a tooth portion 30g (outer peripheral tooth portion) having a tooth trace in the vertical direction (that is, parallel to the longitudinal axis Lg of the cam gear 30) is provided, and the upper and lower horizontal groove portions 33a, 33c are provided. And a cam groove 33 having an oblique groove portion 33b. In the outer peripheral portion of the cam gear 30, a missing tooth portion 34 in which the tooth portion 30g is not cut is provided. On the other hand, at the front end of the intermediate base 80,
A projection 80P (see FIGS. 2 and 3) slidably engaged with the cam groove 33 is provided. As a result, it is supported by the device base 10 via the cam gear 30.

That is, as shown in FIGS. 6 and 7, the rear portion of the intermediate base 80 is supported by the device base 10 via the left and right shaft portions 81 and the intermediate base support portion 11 so as to be vertically rotatable. ing. In addition, the front part is a protrusion 80.
It is supported in a floating state (floating state) within a certain range (that is, within the elastic range of the floating collar 38) with respect to the apparatus base 10 through the P and the cam groove 33 of the cam gear 30. Further, the intermediate base 80
By positioning the above-mentioned positioning projections 82 into the positioning grooves 13 provided in the apparatus base 10, positioning in the left-right direction with respect to the apparatus base 10 is performed.

On the other hand, the traverse base 20 has a floating bush 29 and a floating bush 29 to move the traverse base 20 within a certain range with respect to the intermediate base 80 (ie, the floating bush). 29 and within the elastic range of the floating collar 38)
It is supported in a floating state (floating state). As described later, the traverse base 20
The regulating rod 75 s is positioned at the positioning hole 83 of the intermediate base 80.
By being fitted inside, the front portion is engaged with the intermediate base 80, and in this engaged state, the traverse base 20 is connected to the intermediate base 80 at a total of four locations.

As described above, the traverse base 20
With respect to the intermediate base 80 (therefore, the device base 10
However, instead of being supported by a rigid structure (rigidly), the device base is supported via the intermediate base 80 within the elastic range of each of the cushioning members (the floating bush 29 or the floating collar 38 in addition thereto). Since the disk device 1 is supported in a floating state, even when an impact load is applied to the disk device 1 or when a vibration input is made, the shocks or vibrations can be absorbed by the buffer members 29 and 38. These impact loads or vibration forces can be prevented from directly acting on the respective mechanical components of the traverse base 20 from the device base 10. That is, it is possible to improve the durability of the disk device 1 against the effects of shock and vibration.

Further, since the traverse base 20 is supported in a floating state with respect to the device base 10 via the intermediate base 80 within the elastic range of the cushioning members 29 and 38, it has a rigid structure (that is, Rigid
As compared with the case where the parts are supported, the mechanical parts attached to the apparatus base 10 and the traverse base 20 can adjust the positional relationship between the parts within a floatable range, and can perform the parts manufacturing and assembling work. Accuracy can be set to a somewhat low level, and productivity can be increased.

In this case, the intermediate base 80 is supported rotatably in the vertical direction with respect to the device base 10, and the traverse base 20 is supported by the intermediate base 80 via an elastic body. Support for vertical rotation of base 10 and traverse base 20
Can be performed by different mechanisms. Accordingly, unlike the related art (Prior Art 2) having no intermediate base 80, it is not necessary to share the rotation support and the elastic support of the traverse base with respect to the device base. The setting range of is not limited, and the degree of freedom in setting can be increased. As a result, it is possible to relatively easily achieve both the absorption of the vibration input from the outside and the suppression of the vibration that may be caused by the rotation of the turntable.

On the lower surface side of the traverse base 20,
First and second two electric motors 3 and 4 (see, for example, FIGS. 2 and 3) and a circuit board 2 having a control circuit for controlling the driving of these motors 3 and 4 are fixed. on the other hand,
On the upper surface side of the traverse base 20, the disk 9 (FIG. 5)
7 is mounted on the upper surface, and the turntable 5 is connected to an output shaft 3s (see FIG. 3) of the first motor 3 (spindle motor). On the upper surface side of the traverse base 20, an optical pickup 6 for writing an information signal to the disk 9 and / or reading out the recorded information signal is attached, and various drives for operating the disk device 1 are provided. A mechanism is arranged.

Hereinafter, these driving mechanisms will be described.
As can be seen from FIGS. 3, 5 and 49 to 51, the traverse base 20 has an opening 20 </ b> H that extends in the front-rear direction (the vertical direction in FIG. 5). A pair of pickup guide rods 22 and 23 for guiding the movement in the front-rear direction are arranged. The turntable 5 is more preferably provided with the left and right guide rods 22 and 23 and the opening 2.
It is located near the front end of 0H or ahead of it.

The optical pickup 6 has one side in the left-right direction (the left side in FIG. 5) fixed to a rack member 40 (feed rack) to be described later, and a pair of front and rear guide shoes 6a provided below the fixed portion. . The guide shoe 6a is slidably engaged with the left guide rod 22 in the front-rear direction. On the other hand, on the other side in the left-right direction of the optical pickup 6 (the right side in FIG. 5), a metal guide arm 6b is slidably engaged with the right guide rod 23 in the front-rear direction. The guide arm 6b is provided with a pickup circuit 6 of the optical pickup 6.
k and is electrically connected.

As described above, the guide shoe 6a is engaged with the left guide rod 22 and the guide arm 6b is engaged with the right guide rod 23, so that the optical pickup 6 is moved forward and backward with respect to the traverse base 20. It is movably supported. Note that a flexible connection member (for example, a flexible printed wiring board: not shown) that electrically connects the optical pickup 6 and the circuit board 2 is inserted through the opening 20H.

The rear end of the left guide rod 22 and the front and rear ends of the right guide rod 23 are supported by a guide rod support 24 projecting from the traverse base 20. As shown in detail in FIG. 53, the guide rod support 24 adjusts each end of the guide rod in the vertical direction (that is, adjusts the vertical positions of the guide rods 22 and 23 in the guide rod support 24). A tilt adjusting mechanism for adjusting the inclination of the guide rods 22 and 23 is provided.

That is, an adjusting screw 24 a for raising and lowering the end of the guide rod is provided below each guide rod support 24.
And a coil spring 24b for urging the end of the guide rod downward is incorporated in the upper part. A holding member 24c is fixed above the coil spring 24b. By moving the adjusting screw 24a up and down along the screw, the coil spring 24b is compressed or expanded to change its length, and the vertical position of the guide rods 22, 23 in the guide rod support 24 is adjusted. The inclination of the guide rods 22, 23 is adjusted.

By providing such a tilt adjusting mechanism, the inclination of the guide rods 22 and 23 is adjusted, and the angle between the light beam of the optical pickup 6 and the disk 9 is adjusted. Even if there is, it is possible to write / read information signals to / from the disk 9 with high accuracy. Although not specifically shown, only the front end portion of the left guide rod 22 is not provided with such a tilt adjustment mechanism but is merely a concave shape so as not to interfere with the movement operation of the feed rack 40. It is supported by the receiving part.

In this embodiment, more preferably, for example, a presser fitting of a guide rod support portion 24 for supporting a rear end portion of a right guide rod 23 so that noise of the optical pickup 6 can be easily grounded. One end of 24c extends below the rod support 24, specifically, extends downward through the traverse base 20 (that is, toward the circuit board 2). The circuit board 2 is provided with a through hole 2h at a portion corresponding to the extension 24d of the holding metal 24c, through which an earth connector 25 having a grounded earth wire 25a at one end can be inserted.

Although not specifically shown, for example, a metal sheet metal member to which the device base 10 is attached is located below the device base 10, and the ground wire is attached to the sheet metal member. The terminal side of 25a is connected by, for example, screwing. If necessary, the ground connector 25 can be inserted through the through hole 2h, and the upper end thereof can be inserted into the tip (lower end) of the extension 24d of the holding member 24c. In this case, ground connector 2
5 is inserted into the extension 24d from below.

The guide arm 6b, the guide rod 23 and the coil spring 2
4b is made of an electric conductor such as a metal. Therefore, the pickup circuit 6 of the optical pickup 6
The noise transmitted from k is transmitted to the guide rod 23 via the guide arm 6b, and conduction is taken from the guide rod 23 to the ground wire 25a via the holding bracket 24c and the ground connector 25. Noise can be removed through the control unit.

In this case, the ground connector 25 is connected to an extension 24d formed on the holding member 24c. That is, since the ground connector 25 is connected to a fixed portion irrelevant to the moving operation of the optical pickup 6, when setting the length of the ground wire 25a, there is an extra length corresponding to the moving operation of the optical pickup 6. And the ground wire 25a can be shortened accordingly. Therefore, the space for arranging the ground wire 25a can be reduced, and there is no particular disadvantage in making the disk device 1 compact.

When the ground is taken, the extension 24d of the presser fitting 24c is held in an inserted state by the ground connector 25 attached to one end of the ground wire 25a. Part 24d
The ground can be taken by a simple operation of simply inserting into the, and noise can be removed. That is, the connection operation when connecting the ground wire 25a between the optical pickup 6 and the ground side can be greatly simplified. Also, ground wire 2
The connection operation of 5a can be performed after the disk device 1 is assembled, if necessary, and the workability in assembling the disk device 1 can be improved.

In particular, the guide rod support 24 includes
By changing the length of the coil spring 24b to adjust the vertical position of the guide rods 22, 23 in the guide rod support 24, the guide rods 22, 23 are adjusted.
Adjustment mechanism that adjusts the tilt of the camera (that is, tilt adjustment mechanism)
The noise of the optical pickup 6 is removed by using such a tilt adjustment mechanism. That is, when the ground mechanism is provided to remove noise from the optical pickup 6, the existing configuration originally provided in the optical disk device 1 can be used, and an increase in the number of components and a complicated structure can be avoided. It is.

In this embodiment, the device base 10
Is provided separately from the traverse base 20, and as will be described in detail later, a disk loading mechanism for reciprocally transferring the optical disk 9 between a position above the turntable 5 and an external position of the disk device 1. The traverse base 20 is provided with an intermediate base 80
) Is rotatably supported in the vertical direction with respect to the device base 10.

In such a case, the ground connector 25 is connected to the extension 24d of the presser fitting 24c from below (that is, from the direction included in the direction in which the traverse base 20 rotates). When the traverse base 20 rotates, the ground connector 25
An unreasonable bending moment does not act on the connection portion between the extension portion and the extension portion 24d. Therefore, only by setting the length of the ground wire 25a with a margin corresponding to the rotation operation of the traverse base 20, the traverse base 2
0, the extension portion 2 of the ground connector 25
It is possible to reliably prevent an excessive force from being applied to the connection portion to the 4d and the ground wire 25a.

As described above, the optical pickup 6 has the rack member 4 on one side in the left-right direction (the left side in FIG. 5).
0 (feed rack), the movement of the feed rack 40 in the front-rear direction can be performed by the left and right guide rods 22 via the guide shoe 6a and the guide arm 6b.
Guided by 23. That is, when the feed rack 40 moves along the guide rods 22 and 23, the optical pickup 6 can reciprocate in the front-rear direction while being guided by the guide rods 22 and 23.

As shown in detail in FIGS. 30 to 34, the feed rack 40 has a rack tooth 41 (passive rack portion) formed on one side (right side in FIGS. 3 and 5) over substantially the entire length. On the other side, a rack tooth 42 (switching rack portion) having a predetermined length is formed at the front side thereof. In addition, on the back side of the feed rack 40, as described above,
A pair of front and rear guide shoes 6a are provided. When the feed rack 40 moves rearward (upward in FIG. 5), the guide shoe 6a is abutted against the rear end wall of the traverse base 20 to move the feed rack 40 rearward. It is being regulated.

To drive the feed rack 40 to reciprocate the optical pickup 6 in the front-rear direction, the traverse base 20 is provided with a gear train 51 (rack drive gear train) composed of a group of gears. I have. As shown in detail in FIGS. 9 to 13, the rack drive gear train 51 includes a motor gear 4G fixed to an output shaft 4s (see FIG. 3) of the second motor 4, and a large-diameter input gear meshing with the motor gear 4G. A first traverse gear 52 having a gear 52A (first traverse input gear) and a small-diameter output gear 52B (first traverse output gear) integrally provided thereabove, and a large meshing with the first traverse output gear 52B. It comprises a second diameter input gear 53A (second traverse input gear) and a second traverse gear 53 having a small diameter output gear 53B (second traverse output gear) integrally provided below the input gear 53A. Then, the second traverse output gear 5
3B is engaged with the passive rack portion 41 of the feed rack 40.

When the second motor 4 is driven, the motor gear 4G is moved in a counterclockwise direction in FIGS. 9 to 13 (this direction corresponds to the "first rotation direction" in the present invention). When the rotation is performed at the rotation speed, the rotation is reduced by the rack drive gear train 51 at a predetermined reduction ratio and transmitted to the output side, and the final output gear 53B (second traverse output gear) is rotated at the reduced rotation speed. Rotate counterclockwise. Thereby, the feed rack 40 moves forward (downward in FIGS. 9 to 13) along the guide rail 24 at a predetermined feed speed set in advance.
When the second motor 4 is driven to rotate in a direction opposite to the above case, the moving direction of the feed rack 40 is also reversed.

As described above, the moving direction of the feed rack 40 (therefore, the optical pickup 6) is switched by switching the direction of rotation of the second motor 4 between the forward and reverse directions, and can be reciprocated in the front-rear direction. ing. still,
Basically, the feed rack 40 and the rack drive gear train 51
Thus, an optical pickup driving mechanism for reciprocatingly moving the optical pickup 6 between the inner peripheral side and the outer peripheral side of the disk 9 is constituted, and this corresponds to the “optical pickup driving mechanism” described in the claims of the present application. ing. The pickup guide rods 22 and 23, the guide shoe 6a and the guide arm 6b assist driving of the optical pickup 6.

At the front of the device base 10, the tray 5
A tray drive gear 56 for reciprocating the disk 5 between a disk loading / unloading position (unloading position) on the tray 55 on the front surface of the device 1 and a disk loading / unloading position (loading position) on the turntable 5 inside the device 1 is provided. Are located. The loading position and the unloading position correspond to the “first position” and the “second position”, respectively, as described in the claims of the present application.

The tray drive gear 56 is provided with rack teeth 55g (tray rack teeth: FIG.
9 to 21), a large-diameter output gear 56B meshing with
The small-diameter input gear 5 located below the output gear 56B
6A. The tray drive gear 56 is located on the side of the cam gear 30, and its input gear 56A
Are meshed with the outer peripheral teeth 30g of the cam gear 30.

The tray 55 and the tray rack teeth 55
g and the tray drive gear 56 for disc loading for reciprocatingly transferring the disc 9 between a loading position (first position) above the turntable 5 and an unloading position (second position) outside the apparatus 1. The mechanism is configured, and corresponds to the “disk loading mechanism” described in the claims of the present application. Here, in the application corresponding to the first use state, since the disk loading mechanism is unnecessary, the tray 55 and the tray driving gear 56 are used.
Is not provided.

Then, in order to drive the tray 55 to transfer the disk 9 between the unloading position and the loading position, a gear train 61 composed of a group of gears is used.
(Loading drive gear train: see FIGS. 9 to 13) is provided on the upper surface side of the traverse base 20. The loading drive gear train 61 includes a motor gear 4G fixed to the output shaft 4s of the second motor 4 and a motor gear 4G.
And a large-diameter input gear 62A (first loading input gear) and a small-diameter output gear 62B (first loading output gear) provided integrally therewith.
A loading gear 62, a large-diameter input gear 63A (second loading input gear) meshing with the first loading output gear 62B, and a small-diameter output gear 63B (second loading output gear) integrally provided above the large-diameter input gear 63A. And a large-diameter third loading gear 64 that meshes with the second loading output gear 63B. The third loading gear 64 meshes with the outer peripheral tooth portion 30g of the cam gear 30.

As shown in detail in FIG. 29, the shape of the tooth trace in the longitudinal section of the outer peripheral tooth portion 30g of the cam gear 30 is more preferably formed to be curved in a side view. This curve shows that, when the intermediate base 80 on which the traverse base 20 is mounted and the cam gear 30 are assembled to the device base 10, the intermediate base 80 (therefore, the traverse base 20) becomes a fulcrum at the rear end side. On the other hand, when pivoting vertically (see FIGS. 6 and 7),
The third loading gear 64 is set so as to form a part of an arc-shaped curve Cg ′ along the rotation locus Cg of the front end of the third loading gear 64.

Therefore, even when the traverse base 20 is rotated and inclined with respect to the device base 10 via the intermediate base 80 (shown by broken lines in FIG. 29 and FIG. 7).
The third loading gear 64 on the traverse base 20 and the outer peripheral tooth portion 30g of the cam gear 30 can reliably and smoothly mesh with each other. In addition, the tooth trace shape in the longitudinal section of the outer peripheral tooth portion 30g of the cam gear 30 is inclined with respect to the longitudinal axis Lg of the cam gear 30 and the curve C
It may be a linear shape approximating g ′. 6 and 7, illustration of the second loading gear 63 is omitted in order to clearly show the third loading gear 64 that meshes with the outer peripheral teeth 30g of the cam gear 30.

As described above, the outer peripheral tooth portion 30 of the cam gear 30
The third loading gear 64, which is the final output gear of the loading drive gear train 61, rotates in the vertical direction in accordance with the rotation of the intermediate base 80 and the traverse base 20 in the tooth trace shape in the vertical section of g. Since the traverse base 20 is rotated in the vertical direction with the rotation of the traverse base 20 because the traverse base 20 is rotated in the vertical direction since the traverse base 20 is rotated in the vertical direction. The final output gear 64 can be reliably and smoothly meshed with the outer peripheral teeth 30g of the cam gear 30.

The loading drive gear train 61 and the gear gear 30 (specifically, the outer teeth 30
g) constitutes a loading drive mechanism for driving the disk loading mechanism, and corresponds to the “loading drive mechanism” described in the claims of the present application. Here, in the application corresponding to the first use state, the loading drive mechanism is unnecessary, so that the loading drive gear train 61 and the gear 30 are not provided.

The above-mentioned optical pickup 6 is set so as to be able to move to a predetermined position on the inner peripheral side of the signal recording range where signals are recorded on the disk 9. When the optical pickup 6 moves from the outer peripheral side to the inner peripheral side of the disk 9 via the rack drive gear train 51 by the driving force of the second motor 4, the optical pickup 6 records a signal on the disk 9. The transmission path is set such that the driving force of the second motor 4 is transmitted to the loading drive gear train 61 when the predetermined position is reached beyond the range.

That is, as shown in detail in FIGS. 14 to 18, a vertical axis 20s is erected at the front of the traverse base 20, and a power transmission path switching trigger lever 71 is rotatable on the vertical axis 20s. Is pivoted to. Further, a lock lever 73 capable of regulating the position is arranged near the trigger lever 71. The trigger lever 71
The vertical axis 20 is, as shown in detail in FIGS.
The cam gear 30 includes a base 71b rotatably fitted to the s, a partial gear 71g formed on a part of the outer periphery of the base 71b, and a pair of engagement arms 71a engaged with the cam gear 30. Further, a stopper portion 71s that can engage with the claw portion 73d of the lock lever 73 is provided on the outer peripheral portion of the base portion 71b of the trigger lever 71. Partial gear 71g
Can engage with the switching rack portion 42 of the feed rack 40 described above, while the engagement arm 71 a is set so as to be able to engage with the hook portion 32 protruding from the outer periphery of the cam gear 30.

The lock lever 73 is shown in FIGS.
0, a base 73b fitted and fixed to the front end of the traverse base 20;
It has a lever portion 73a extending in a letter shape, and a spring portion 73c extending in a substantially arc shape from the base portion 73b. The lever portion 73a is integrally formed with a claw portion 73d capable of engaging with the stopper portion 71s of the trigger lever 71 and a projecting pin 73p projecting upward. The base 73b has a groove 73s through which a regulating rod 75s of a positioning rod 75 described later is slidably inserted.
(Guide slot) is formed. As can be clearly understood from FIGS. 30 and 32, a cam groove 43 formed in a bent shape in a plan view is provided on the back side of the feed rack 40, and the front end side of the cam groove 43 is in front of the feed rack 40. Is open to The protruding pin 73p of the lock lever 73 is slidably engaged with the cam groove 43.

The device base 10 and the intermediate base 8
The zero and traverse base 20 are provided with a positioning mechanism for accurately maintaining a linked state between mechanical parts attached to the device base 10 and the traverse base 20, respectively. That is, the traverse base 20
The front of the traverse base 20 has an intermediate base 80
To the left and right directions, and both bases 2
0, 80 are integrally engaged with the positioning member 7.
5 (positioning rod) are provided.

This positioning rod 75 is shown in FIGS.
As shown in detail in FIG. 3, an engagement base 75b slidably engages with the front-rear direction guide groove 26 formed on the upper surface of the traverse base 20, an extension receiving portion 75c extending forward from the base 75b, A regulating rod portion 75s is provided extending in the front-rear direction (vertical direction in FIGS. 14 to 18) at a position offset rightward from the engagement base portion 75b and the extension receiving portion 75c.

As described above, the restricting rod 75s is slidably inserted in the guide slot 75s formed in the base 73b of the lock lever 73 in the front-rear direction. Further, as will be described in detail later, the front portion of the extension receiving portion 75c abuts against the spring portion 73c of the lock lever 73 and is urged rearward in the assembled state, while the rear surface portion thereof is connected to the feed rack 40c. , And the entire positioning rod 75 moves forward with the forward movement of the feed rack 40.

As shown in FIGS. 14 to 18, a positioning hole 8 is formed in the front side wall of the intermediate base 80 so that the regulating rod 75s of the positioning rod 75 can be inserted and retracted.
When the feed rack 40 moves forward and the amount of movement reaches a certain value or more, the front end face of the feed rack 40 contacts the rear face of the extension receiving portion 75c of the positioning rod 75 and pushes it. The entire positioning rod 75 moves forward with the engagement base 75b along the guide groove 26. The traverse base 20 is engaged with the intermediate base 80 by fitting the regulating rod portion 75 s into the positioning hole 83 of the intermediate base 80.

On the other hand, the upper surface of the front end portion of the traverse base 20 has an arcuate cam groove 27 (arc groove) in plan view.
Is provided. An engagement convex portion 32p is provided on the back surface of the hook portion 32 of the cam gear 30, and the engagement convex portion 32p is engaged with the arc groove 27, whereby the traverse base 20 is moved in the front-rear direction with respect to the device base 10. Is regulated. Further, as described above, the projection 80P provided at the front end of the intermediate base 80 engages with the cam groove 33 of the cam gear 30, and thereby the device base 10 at the front end of the intermediate base 80 (accordingly, of the traverse base 20).
The vertical positional relationship with respect to is determined accurately.

As described above, the positional relationship of the front end of the traverse base 20 with respect to the device base 10 in three directions orthogonal to each other in the left-right direction, the front-rear direction, and the up-down direction is determined.
0, and the mechanical components respectively attached to the device base 10 and the traverse base 20 can be accurately and reliably engaged with each other. In particular, when the transmission path of the driving force of the second motor 4 is switched, the linked state between the disk loading mechanism provided on the device base 10 and the loading drive mechanism provided on the traverse base 20 can be accurately maintained.

On the other hand, the disk device 1 includes a clamp plate 95 on which a clamper 96 for holding the disk 9 in cooperation with the turntable 5 is assembled (FIGS. 1, 2, 4, 22, and 22). See FIG. 23). The above clamp plate 95
The nails 95d are respectively formed on a plurality of (two in the front and rear in this embodiment) mounting legs 95f provided on both the left and right sides. It is assembled to the device base 10 by being combined. In this assembled state, the center of the clamper 96 can be made to substantially coincide with the rotation center of the turntable 5.

The clamp plate 95 has left and right horizontal bases 95b for supporting the left and right mounting legs 95f, and a substantially annular central holder 95a for supporting the clamper 96.
And a horizontal connecting portion 95c for connecting the holder portion 95a and the horizontal base portion 95b. In the present embodiment, the left and right roots of the central holder 95a and the horizontal bases 9
5b, a notch 95e is formed, and the width of the horizontal connecting portion 95c is smaller than the width of the horizontal base 95b by an amount corresponding to the notch 95e. That is, the horizontal connecting portion 95c has lower rigidity than the horizontal base portion 95b, and is easily bent in the vertical direction. Therefore, even when the disk device 1 is dropped and a large impact load is applied to the device 1 and the turntable 5 abuts on the clamp plate 95, the clamp plate 95 is easily flexed in the vertical direction. And the turntable 5 (and the spindle motor 3 connected thereto) can be effectively prevented from being seriously damaged.

In the present embodiment, even if the disk 9 has a deformation such as warpage or bending, the deformation can be corrected with a relatively simple structure, and the angle between the disk surface and the light beam can be strictly regulated. A disc clamp mechanism is employed.
FIGS. 44 to 46 schematically show the basic configuration and principle of the disk clamp mechanism employed in the present embodiment. As shown in FIG. 44, the clamper 96 includes a central clamper portion 96a for fixing the vicinity of the inner edge of the disk 9 together with the turntable 5 and a diameter substantially equal to the vicinity of the outer edge of the disk 9 and the center clamper portion 96a. A large clamper portion 96b having substantially the same height. The large clamper portion 96b has a predetermined width and is formed over the entire circumference of the clamper 96.
The entire surface of the portion 96c is formed in a concave shape so as not to come into contact with or contact with the disk 9.

As shown in FIG. 45, when the disk 9 is placed on the turntable 5 and then the clamper 96 is mounted, the center clamper 96a is fixed together with the turntable 5 across the vicinity of the inner edge of the disk 9. Then, the large clamper portion 96b presses the vicinity 9b of the outer edge of the disk 9. Then, as shown in FIG. 45 (a) and FIG. 45 (b), when the outer edge of the disk 9 is warped in a direction opposite to the surface irradiated with the light beam (so-called label surface direction). After the outer peripheral portion thereof abuts against the large clamper portion 96b of the clamper 96, the central clamper 96a presses the disk 9 and fixes the disk 9 between the disk 9 and the turntable 5.

The outer edge 9b of the disk 9 that is warped due to the holding is pressed in the direction opposite to the original warp, so that the warp is corrected. In some cases, the middle diameter portion (that is, a portion sandwiched between the inner edge portion 9a and the outer edge portion 9b) 9c of the disk may be warped in the original warp direction as shown in FIG. However, even in such a case, the middle diameter portion 9c
Is a concave portion 96c of the clamper 96, so that the disk 9 does not contact the clamper 96 in this portion 9c.

Next, except when the turntable 5 and the clamper 96 are clamped, a clamper transfer operation for transferring the clamper 96 in a direction opposite to the upper surface of the turntable 5 is described in a schematic side sectional view (FIG. This is described with reference to FIG. Tray 55
The disk 9 transferred onto the turntable 5 by the above is placed by the clamper 96. 55a is disk 9
Are provided on the tray so as to be obstacles provided on the tray.

FIG. 46 (a) shows a state in which the disk 9 is held by the clamper 96 and the turntable 5 (similar to FIG. 45 (c)). In this case, disk 9
It is needless to say that is held in a state separated from the tray 55. Next, as shown in FIG. 47B, at the same time when the turntable 5 moves in the direction indicated by arrow D, which is the direction opposite to the disk 9 (the direction away from the disk 9), the clamper 96 is placed on the upper surface of the turntable. It moves in the direction of arrow U shown in the figure, which is the opposite direction (the direction away from the turntable 5).

When the tray is moved by moving the clamper 96 in this manner (see the arrow E in FIG.
(Direction), it is possible to prevent the movement of the tray 55 from being hindered by the protrusion 55a of the tray 55 or another obstacle. As described above, by providing the clamper for pressing the outer circumference from the label surface of the disc, the warpage of the disc 9 can be reduced, the stable reproduction drive can be performed, and the clamper 96 inhibits the movement of the tray 55. Can be avoided.

This embodiment is provided with a disk clamp mechanism to which the above-mentioned basic principle is applied, and a specific configuration thereof will be described in detail with reference to FIGS. 47 and 48. Here, in the application corresponding to the first use state, such a disk clamp mechanism is unnecessary, so that there is no need to provide a dedicated mechanical component to the disk clamp mechanism such as the clamp plate 95 or the clamper 96. FIG. 47 is a schematic perspective view of the disk clamp mechanism according to the present embodiment, and FIG. 48 is a partial longitudinal sectional explanatory view showing the operation thereof.
This shows the state (c) immediately before the movement by the tray from the state (a) in which the disk is sandwiched.

In FIGS. 47 and 48, reference numeral 96d denotes a clamper magnet, which is formed below the inner diameter of the clamper 96 so as to face the tip of the turntable made of a ferromagnetic material such as iron. Reference numeral 96e denotes a tapered core portion, which is provided at the center of the clamper 96, and is inserted into the center hole of the turntable 5 to center the turntable 5 and the clamper 96. The centering of the disc 9 and the turntable 5 is performed by holding the inner diameter portion of the disc 9 at the tapered step of the turntable 5 as in the related art.

Reference numeral 94 denotes a spring hook. A hook 94a projecting from the inner diameter of the spring hook penetrates the clamp plate 95 in a rotatable and playable manner. The spring hook 94 is locked via 98. As a result, the clamper 96 that contacts and presses the disk is urged upward by the spring 98 from the spring hook 94 fixed to the inner diameter hook portion 94a.

Thus, the clamper 96, the spring 98, the spring holder 97, the spring hook 9
The clamp plate 95 supporting the support 4 is locked and fixed to a disk device main body (device base) 10 on which the turntable 5 is held and the tray 55 is slidably mounted.

The operation of the disk clamp mechanism configured as described above will be described below. FIG. 48A shows a state in which the disk 9 placed on the lifted turntable 5 is clamped and fixed by the clamper 96 as described in the first embodiment. Since the attraction force between the clamper magnet 96d at the inner diameter of the clamper and the turntable 5 is larger than the upward urging force of the spring 98, the clamper 96 is provided on the entire surface of the disc 9 placed on the turntable 5. Press over. Further, since the turntable 5 is raised, the spring holder 97 and the hook portion 94a are lifted across the vicinity of the inner diameter of the disk, and the spring hook 94 is separated from the clamp plate 95 so as to be rotatable.

Next, as shown in FIG. 9B, when the traverse base 20 is rotated downward, the turntable 5 is opposed to the disk 9 (a direction away from the disk 9: a direction D in the drawing). By moving, the disk 9 separates from the turntable 5 and is placed on the tray 55. The spring holder 97 and the spring hook 94, which are separated from the turntable 5 and no longer supported, hang down due to the attraction force between the clamper magnet 96d and the turntable 5, and the weight of the spring table 94. Therefore, the spring holder 97 and the spring hook 94 are supported by the clamp plate 95. Further, as the turntable 5 is lowered, the magnetic attraction between the turntable 5 and the clamper magnet 96d which are separated from each other decreases, and the spring 98
When the repulsive force is greater, the clamper 96 is urged upward, and the clamper 96 is separated from the disc 9 on the tray 55.

Next, as shown in FIG. 13C, when the turntable 5 further moves in the direction away from the disk 9 and the space between the clamper 96 and the tray 55 and the space between the tray 55 and the turntable 5 are fully separated. The tray 55 slides forward (in the direction perpendicular to the drawing paper) while the disc 9 is placed, and the disc 9 is ejected.

Similarly, when the disc 9 is placed on the turntable 5 in the reverse order to the above description, the tray 55 is sufficiently moved from the clamper 96 and the turntable 5 as shown in FIG. Slides and moves in the separated state. When the disc 9 is moved to a regular position above the turntable 5, the sliding movement of the tray 55 stops, and the turntable 5 starts to rise. As the turntable 5 is raised, the spring hook 94
Is lifted, the engagement between the spring hook 94 and the clamp plate 95 is released. Further, the turntable 5 and the clamper magnet 9 are applied by the upward biasing force of the spring 98.
When the suction force with 6d overcomes, the clamper 96 is sucked downward and presses the disk 9.

As described above, according to the present embodiment, even in an optical disk drive having a large-diameter clamper, the large-diameter clamper 96 that presses the disk when the turntable is approaching.
However, by using the spring member, the tray 55 is automatically separated from the disc when the turntable is lowered, and when the tray is slid when the disc is ejected, the movement of the tray 55 is prevented by the protrusion 55a or other obstacle. Can be avoided.

That is, according to the present embodiment, the warped disk is brought into contact with and pressed against the vicinity of the outer periphery where no information is recorded, thereby correcting the warp and recording / reproducing the information recording surface of the disk and the information. Therefore, an excellent effect is obtained in that the angle with the irradiated light beam is kept within a certain value, and information can be read accurately and recorded / reproduced with high accuracy. In addition, the tray can be moved without obstructing by providing a means for transferring the large-diameter clamper to be pressed against the outer periphery.

The operation of the disk device 1 configured as described above will be described. First, in the signal reproduction state (see FIG. 9) in which the disk 9 is loaded into the disk device 1 and the signal recorded on the disk 9 is reproduced by the optical pickup 6, as shown in FIG. 80 and the traverse base 20 are the intermediate base 80
The projection 80P at the front end of the cam gear 30 is held substantially parallel to the device base 10 by fitting into the upper horizontal groove 33a of the cam groove 33 of the cam gear 30. At this time, FIG.
As shown in FIG. 4, the trigger lever 71 has a stopper 71 s which is locked by a claw 73 d of a lock lever 73 and an engaging arm 71 a which is engaged with the hook 32 of the cam gear 30. In this state, the trigger lever 7
1 has been pivoted to the limit in the counterclockwise direction in FIGS.

In the above-mentioned state, the reproduction of the signal from the disk 9 is intended to reproduce the optical pickup 6 while driving the spindle motor 3 to rotate the turntable 5 on which the disk 9 is mounted at a predetermined rotation speed. The optical pickup 6 is moved to a position substantially below a target signal track, and a signal on the disk 9 is read by an optical element (an optical system including a lens and a laser source) provided in the optical pickup 6. Here, when the signal track to be reproduced is not above the current position of the optical pickup 6,
Alternatively, when signal reproduction is performed over several tens of signal tracks, the optical pickup 6 is moved in the inner circumferential direction of the disk 9 (front direction of the disk device 1) and the outer circumferential direction.
(To the rear of the disk device 1).

The movement of the optical pickup 6 is performed by an optical pickup driving mechanism. That is, as described above, when the second motor 4 is driven to rotate the motor gear 4G, the rotation is reduced at a predetermined reduction ratio by the rack drive gear train 51 and transmitted to the output side, and the final output gear 53B The (second traverse output gear) rotates at the reduced rotation speed, and the feed rack 40 (therefore, the optical pickup 6 connected thereto) moves in the front-rear direction. At this time, if the rotation direction of the motor gear 4G is the clockwise direction in FIGS. 9 to 13, the optical pickup 6 moves forward (downward in FIGS. 9 to 13: the inner circumferential direction of the disk 9), and If the rotation direction of 4G is the opposite, the optical pickup 6 moves rearward (upward in FIGS. 9 to 13: outer peripheral direction of the disk 9).

In this signal reproducing state, the second motor 4
, The loading drive gear train 61 also rotates, but the tooth portion of the third loading gear 64, which is the final output gear, is formed by the missing tooth portion 34 of the cam gear 30.
And is set so as not to mesh with the outer peripheral tooth portion 30g. Therefore, in this signal reproduction state, the driving force of the second motor 4 is not transmitted to the cam gear 30 (and therefore to the tray driving gear 56).

FIGS. 10 and 15 show a state in which a signal recorded on the innermost portion of the recording position range (signal recording range) where the signal of the disk 9 is recorded is being reproduced. In this state, the optical pickup 6 has been moved forward by the optical pickup driving mechanism to the inner peripheral end position Sr of the signal recording range of the disk 9, and the passive rack 41 of the feed rack 40 The end portion meshes with the final output gear 53B (second traverse output gear) of the rack drive gear train 51. Further, the switching rack portion 42 is quite close to the partial gear 71g of the trigger lever 71.

As is well known, the signal recording range of the optical disk 9 is determined by the distance from the center of the disk 9 based on the disk standard. In the conventional disk device, a position detection switch of the optical pickup is provided at a position corresponding to the innermost position of the signal position range, and the optical pickup is located at the innermost position / moved to the innermost position. Is detected and the optical pickup is controlled so as not to move further inward. On the other hand, in the disk device 1 according to the present embodiment, the inner circumference end position Sr of the signal recording range of the disk 9 is set as the inner circumference end switching position, and the inner circumference detection switch 7 is provided here. When the inner circumference detection switch 7 is off, the optical pickup 6
Is the same as the conventional optical disk device in that the detection of whether or not is located at the innermost position / moves to the innermost position.
However, when turned on, the optical pickup 6
Operates the inner circumference detection switch 7 even when the optical pickup 6
This is different from the related art in that the optical pickup 6 is set so as to be able to move further inward without restricting further movement toward the inner circumference.

The inner circumference detection switch 7 performs, for example, a well-known mechanical operation. The inner circumference detection switch 7 is provided so as to be able to move up and down with respect to the upper surface of the traverse base 20. When the switch reaches the upper side of the inner circumference detection switch 7, its lower surface interferes with the switch 7, and pushes down the inner circumference detection switch 7 into the traverse base 20 against the urging force of a switch spring (not shown). It has become. Note that the inner circumference detection switch 7 is not limited to the above-described type, and for example, a non-contact type switch may be used.
Various well-known structures can be used.

FIGS. 11 and 16 show a state in which the optical pickup 6 has moved to the inner peripheral side after the optical pickup 6 has moved to the inner peripheral end position Sr and the inner peripheral detecting switch 7 has been operated. It is shown. Here, a difference between the states of FIGS. 10 and 15 and the states of FIGS. 11 and 16 and a transition operation of the states will be described. 10 and 15
The movement of the optical pickup 6 from the state shown in FIG. 11 to the state shown in FIG. 11 and FIG. This is done by further rotating in the same direction (clockwise).

As the optical pickup 6 further moves inward, the switching rack portion 42 of the feed rack 40 for moving the optical pickup 6 back and forth meshes with the partial gear 71g of the trigger lever 71, and rotates the trigger lever 71 clockwise. Rotate in the direction. Accordingly, the trigger lever 71
Causes the hook 32 of the cam gear 30 to rotate clockwise.

As a result, the cam gear 30 rotates clockwise, and its outer teeth 30g and the final output gear 64 of the loading drive gear train 61 (third loading gear).
Begins to mesh. In this state, the feed rack 4
The zero passive rack portion 41 is in mesh with the final output gear 53B (second traverse output gear) of the rack drive gear train 51. Further, the lock lever 73, which has been engaged with the stopper portion 71s of the trigger lever 71 to fix the position of the trigger lever 71, is rotated by the protrusion pin 73p moving along the cam groove 43 of the feed rack 40. Then, the position fixing of the trigger lever 71 by the claw 73d is released.

FIG. 12 and FIG.
Starts to mesh with the third loading gear 64, which is the final output gear of the loading drive gear train 61,
Further, a state where the cam gear 30 is rotated clockwise by the driving force from the third loading gear 64 is shown. This operation is also performed by the second motor 4 using the motor gear 4.
G is performed by rotating the optical pickup 6 in the clockwise direction, similarly to the rotation direction when the optical pickup 6 is sent to the inner peripheral side.

By the operation of the cam gear 30, the trigger lever 71 further rotates counterclockwise to a position regulated by the cam gear 30, and the passive rack portion 41 of the feed rack 40 and the second traverse output gear 53B. The optical pickup 6 is retracted to a further inner circumferential position (front position) until the engagement of the optical pickup 6 is released. Therefore, after this,
Even if the motor gear 4G further rotates clockwise, the driving force of the second motor 4 is not transmitted to the feed rack 40 (and thus to the optical pickup 6).

At this time, the protruding pin portion 73p of the lock lever 73 is guided by the cam groove 43 of the feed rack 40, approaches the inclined portion, and rotates clockwise by the spring force of the lock lever 73. Then, the trigger lever 71 is rotated counterclockwise to a position completely separated from the cam gear 30. Basically, the trigger lever 71, the lock lever 73, and the cam gear 30 (specifically, the hook portion 32 and the missing tooth portion 34), and more specifically, in addition to these, the switching rack portion of the feed rack 40 A power transmission path switching mechanism that switches the transmission path of the driving force of the second motor 4 is constituted by the cam groove 43 and the cam groove 43, and the like.
This is the "power transmission path switching mechanism" described in the claims of the present application.
Is equivalent to

Since the power transmission path switching mechanism is not required for the use corresponding to the first use state, the trigger lever 7 which is a mechanical component used in the mechanism is not required.
1, there is no need to provide the lock lever 73 and the cam gear 30. However, in the case of the lock lever 73, since it is located on the back side of the feed rack 40, it is relatively difficult to attach / detach to / from the traverse base 20 (that is, the lock lever 73 is mounted after the feed rack 40 is mounted on the traverse base 20). Therefore, even in the case of the use corresponding to the first use state, it may be attached to the traverse base 20.

Further, as described above, the feed rack 40
After moving the optical pickup 6 to the innermost peripheral end position Sr of the signal recording range of the disk 9, the optical pickup 6 can be further moved to a predetermined position on the inner peripheral side, and the feed rack 40 moves to the predetermined position on the inner peripheral side. Or by moving from the predetermined position to the outer periphery of the disk, the transmission path of the driving force of the second motor 4 is switched, so that the optical pickup is driven by driving one motor (the second motor 4). 6
And the switching of the transmission path of the driving force of the second motor 4 can be performed in cooperation with each other.

Further, after the optical pickup 6 in the signal reproducing state is moved by the second motor 4 to the inner peripheral end position Sr of the signal recording range on the optical disk 9, the optical pickup 6 is further moved without changing the rotation direction. By continuing to rotate 4, the clamp of the optical disk 9 by the turntable 5 can be automatically released, and the optical disk 9 can be ejected out of the apparatus. Can be abolished. Then, by reducing the number of motors used in the apparatus, it becomes possible to provide a cheaper optical disk apparatus.

Further, the optical pickup 6 is moved to the innermost position Sr of the signal on the disk 9 by driving the second motor 4, and the optical pickup 6 is moved by the inner periphery detecting switch 7.
After the position of the second motor 4 is detected, the rotation direction of the second motor 4 is changed or the rotation is stopped, so that continuous reproduction / recording of the signal of the disk 9 can be performed without discharging the disk 9 out of the apparatus. It is also possible. Also,
Even if there is no detection switch for detecting that the disk has been loaded into the apparatus and a detection switch for detecting the clamping operation of the disk, the inner circumference detection switch 7 is required.
As a result, the above state can be detected, the number of detection switches can be reduced, and a more inexpensive optical disk device can be provided.

In the present embodiment, as described above, the traverse base 20 is configured to rotate vertically about the rear end thereof via the intermediate base 80, and the front end of the intermediate base 80 The projection 80P of the portion is engaged with the cam groove 33 formed in the cam gear 30. As described above, the cam groove 33 includes the upper and lower horizontal groove portions 33a and 33c and the oblique groove portion 33b connecting them (see FIGS. 24 to 29). The vertical position of the front end portion of the traverse base 20 is determined by which part of the traverse base 20 is engaged (that is, by the rotation direction and the amount of rotation of the cam gear 30). Therefore, the intermediate base 80 and the traverse base 20 rotate up and down around the rear end in accordance with the direction and amount of rotation of the cam gear 30.

As described above, the traverse base 20
Is supported via the intermediate base 80 so as to be rotatable up and down with respect to the apparatus base 10 about one end thereof. Specifically, the cam gear 30 is rotated by the power transmission from the loading drive gear train 61, and the other end of the traverse base 20 is moved up and down.
It is rotated vertically with respect to 0. That is, the driving operation of one motor (the second motor 4) cooperates with the vertical movement of the traverse base 20 (therefore, the raising / lowering operation of the turntable 5) and the transfer operation of the disk 9. It is possible to make it.

Then, as shown in FIGS. 13 and 18,
When the cam gear 30 further rotates clockwise, the engagement position of the front end projection 80P of the intermediate base 80 with the cam groove 33 moves from the upper horizontal groove 33a to the lower horizontal groove 33c via the oblique groove 33b. Is set to That is, in the state shown in FIG. 9 and FIG. 14, the protrusion 80P is engaged with the upper horizontal groove 33a, and the intermediate base 80 and the traverse base 20 are, as shown in FIG. It is maintained so that it is parallel and the upper surfaces of both are substantially flush. Therefore, the disc 9 can be placed on the turntable 5 and held horizontally with the clamper 96.

FIGS. 10 to 13 and FIGS. 15 to 1
As shown in FIG. 8, when the feed rack 40 moves forward and the amount of movement reaches a certain value or more, the cam gear 30 starts to rotate, and the front end projection 80P of the intermediate base 80 is
And the lower horizontal groove 33c is engaged through the oblique groove 33b. As a result, as shown in FIG. 7, the intermediate base 80 and the traverse base 20 pivot downward about the rear portion thereof and are inclined with respect to the device base 10. In this state, since the turntable 5 is moving downward in an inclined state, the disc 9 is moved from the outside of the apparatus 1 to the turntable 5.
The disc 9 does not interfere with the turntable 9 when the disc 9 is pulled upward or when the disc 9 is ejected from above the turntable 9 to the outside of the apparatus 1.

In this case, the outer gear 30g of the cam gear 30
The traverse base 20 is positioned at a predetermined position with respect to the device base 10 (the front end projection 80P of the intermediate base 80 is
In the state where the traverse base 20 is rotated downward to the position where the traverse base 20 is engaged with the tray driving gear 56 of the disc loading mechanism in a state where the traverse base 20 is rotated downward to the position where the traverse base 20 is engaged with the lower horizontal groove 33c via the oblique groove 33b. It is driven in a state where it is turned to. Therefore, when the tray is driven (that is, when the disk is transferred), the tray 55 (that is, the disk 9) is
Interference with the turntable 5 can be reliably avoided.

When the traverse base 20 is inclined as described above (see FIGS. 13, 18 and 7), the third loading gear 64 is engaged with the outer peripheral teeth 30g of the cam gear 30 while also inclined. However, as described above (see FIG. 29), this outer peripheral tooth portion 30g is
Since the tooth trace shape in the vertical cross section is set to a curved shape or a shape inclined with respect to the axis Lg of the cam gear 30, both gears 64 and 30g can surely and smoothly mesh.

While the feed rack 40 moves forward (that is, the optical pickup 6) as described above and the traverse base 20 performs the tilting operation, as shown in FIGS. The front end of the feed rack 40 comes into contact with the rear surface of the extension receiving portion 75c of the positioning rod 75 and pushes it forward. Thereby, the regulating rod portion 75s of the positioning rod 75 moves forward while being guided by the guide slot 73s of the base 73b of the lock lever 73. Then, as described above, the restricting rod portion 75 s is fitted into the positioning hole 83 of the intermediate base 80, whereby the intermediate base 80
The positioning of the traverse base 20 in the left-right direction with respect to the device base 10 is performed via the.

The front portion of the extension receiving portion 75c of the positioning rod 75 is connected to the spring portion 73 of the lock lever 73.
c and is urged rearward by the spring portion 73c. When the feed rack 40 moves rearward, contrary to the above, the positioning rod 75 is moved rearward by the urging force of the spring portion 73c. Further, the hook portion 3 of the cam gear 30 is
By the engagement of the two engaging projections 32p, while the traverse base 20 is substantially parallel to the apparatus base 10 and the upper surfaces of the two are maintained substantially flush, the positioning of the two in the front-rear direction is performed. ing.

FIGS. 19 and 20 show that the motor gear 4G is further rotated in the same direction (clockwise) by the second motor 4, and the cam gear 30 is further rotated clockwise through the loading drive gear train 61. The state is shown. During the state shown in FIGS.
The sixth input gear 56A does not mesh with the outer peripheral tooth portion 30g of the cam gear 30, but corresponds to the missing tooth portion. Therefore, even if the cam gear 30 rotates, the tray drive gear 56 does not rotate.

However, the cam gear 30 is not shown in FIGS.
When the cam gear 30 rotates, the outer peripheral teeth 30g of the cam gear 30 start to mesh with the input gear 56A of the tray drive gear 56, and the rotation of the cam gear 30 causes the tray drive gear 56 to rotate. Then, with this, FIG.
As shown in FIG. 7, the tray 55 is drawn forward through the output gear 56B of the tray drive gear 56 and the tray rack teeth 55g meshing therewith.

The above description is about the case where the tray 55 is pulled out from the inside of the disk device 1 (that is, the operation of releasing the clamp of the optical disk 9 and discharging the disk 9 from the signal reproducing state). On the contrary, when the tray 55 is pulled in from the outside of the disk device 1, the second motor 4 is rotated in the opposite direction by the motor control circuit provided on the circuit board 2, and the motor gear 4G Is driven to rotate clockwise. Thus, the loading of the optical disk 9 into the disk device 1, the clamping of the disk 9, and the transition to the signal reproduction state can be performed as a series of operations.

As described above, according to the present embodiment, the traverse base 20 to which the turntable 5 is attached separately from the device base 10 is supported by the device base 10 so as to be vertically rotatable. By rotating one motor (second motor 4) continuously in the forward direction (first rotation direction) or the reverse direction, the moving operation of the optical pickup 6, the elevating operation of the turntable 5, and the disc 9 is performed almost continuously in this order or almost continuously in the reverse direction in the reverse direction.
When loading and unloading, it is possible to avoid interference with the turntable 5 without moving the disk 9 in the vertical direction. Therefore, unlike the conventional disk device, there is no need to provide a disk holder for lifting the disk.

Further, the disk 9 can be fixed (clamped) and released from the turntable 5 by utilizing the operation of vertically rotating the traverse base 20 to which the turntable 5 is attached with respect to the apparatus base 10. Will be possible. Therefore, unlike the conventional disk device, there is no need to drive the clamper side (chuck plate) vertically. In this case, the moving operation of the optical pickup 6, the raising / lowering operation of the turntable 5, and the transferring operation of the disk 9 can be performed by one motor (the second motor 4). In addition, the disk device 1 can be operated by a total of two motors.
That is, the number of motors used can be reduced, the structure of the disk device 1 can be simplified, and good operation of each component can be obtained more stably.

In the above description, not only the mechanism having a basic function for reproducing and / or recording the information signal, such as the optical pickup 6 and its driving mechanism and the rotating mechanism of the turntable 5, but also the disk 9 is mounted on the turntable. 5, a disc loading mechanism for moving between a loading position above and an unloading position outside the device,
Disk device 1 incorporated in one integrated unit
The transmission path of the driving force of the second motor 4 is switched between a path for transmitting to the loading drive mechanism and a path for transmitting to the pickup drive mechanism.

However, when the disk is set and removed from the turntable manually (for example, in the case of a hop-up type disk device),
When a disk loading mechanism is provided as an external mechanism (for example, in the case of a disk device having a changer for handling a plurality of disks), or when a disk loading mechanism is not required, or when the disk loading mechanism is configured as an external mechanism, The turntable 5, the first motor 3 (spindle motor) for rotating the turntable, the optical pickup 6, its driving mechanism, and the second motor 4 capable of applying a driving force to the pickup driving mechanism are mounted on the traverse base 20. Thus, a unit body (basic unit) can be configured, and as described above, this basic unit can be used alone (first use state).

For such an application (first use state), the loading drive mechanism is unnecessary, and therefore the first to third loading gears 62 of the loading drive gear train 61 are not required.
The torsion gears 64 and the cam gear 30 may be used in the state shown in FIG. 50 without being assembled to the traverse base 20. In this case, the second motor 4 is used as a motor dedicated to moving the optical pickup 6.

That is, as can be seen from FIGS. 49 and 50, the first to third loading gears 62 to 64 of the loading drive gear train 61 are connected to the shafts of the respective pivot bosses 62S to 64S provided on the traverse base 20. Holes 62h-6
4h, the rotating shafts of the gears 62 to 64 are inserted and assembled. The rotation shafts of the gears 62 to 64 are rotatably supported by the shaft holes 62h to 64h of the pivot bosses 62S to 64S. Therefore, for the use corresponding to the first use state, as shown in FIG. 50, the first to third loading gears 6 of the loading drive gear train 61 are used.
It is not necessary to attach 2 to 64 to the traverse base 20. Alternatively, when these are already assembled, the rotation shafts of the first to third loading gears 62 to 64 are connected to the shaft holes 62h to 64h of the respective pivot support bosses 62S to 64S.
, The loading drive gear train 61 can be easily removed from the traverse base 20.

Incidentally, the first to third loading gears 62 to 64 of the loading drive gear train 61 correspond to the “gear mechanism (engaging the additional component unit with the basic unit)” according to the present invention. Shaft holes 62h-6 of the respective pivot bosses 62S-64S provided on the traverse base 20
4h corresponds to the “attaching portion (removably attaching the gear mechanism)” described in the claims of the present application.

Further, for the use corresponding to the first use state, the disk loading mechanism itself is unnecessary, so that it is not necessary to provide the tray 55 and the tray drive gear 56. Similarly, since the device base 10 and the intermediate base 80 are also unnecessary, there is no need to assemble them to the traverse base 20, and additional parts required for the assembling (for example, positioning between the traverse base 20 and the intermediate base 80). Positioning rod 75) is not required. Similarly, since a power transmission path switching mechanism is not required, the trigger lever 7 used in the structure of the mechanism is not required.
The 1 and the lock lever 73 also need not be attached to the traverse base 20. Note that, for components such as the lock lever 73 that are relatively difficult to attach to and detach from the traverse base 20 (that is, it is difficult to retrofit to the basic unit UM), even in applications corresponding to the first use state, It may be attached to the traverse base 20.

An additional component unit is constituted by each mechanism and each component which is unnecessary for the use corresponding to the first use state. That is, the additional component unit is connected to the traverse base 20 via the intermediate base 80.
, A disk loading mechanism, a loading drive mechanism, a power transmission path switching mechanism, and more preferably a disk clamp mechanism. This additional component unit can be easily attached to and detached from (attached to / removed from) the basic unit UM as can be clearly understood from the detailed description of each mechanism described above and the corresponding drawings.

The disk device thus configured has a first use state (see FIG. 50) in which the above-mentioned basic unit UM is used alone, and a single unit obtained by assembling the basic unit UM and the above-mentioned additional component unit with each other. In the second use state (for example, see FIG. 1) used as a unit body, the use state can be selectively selected for use. In other words, it is easy to selectively use the disk loading using the power (second motor) inside the device and the disk loading that is unnecessary or performed using the power outside the device. You can do it.

The basic unit UM configured as described above
By adopting a production system for producing a disk device by using the above and the additional component unit, it is possible to produce various types of optical disk devices having different structures very efficiently. That is, the above-described basic unit UM and the additional component unit are stocked, respectively, and a disk device (for example, a hop-up type disk device) for manually setting and removing a disk from the turntable, and a disk loading mechanism When producing a disk device that does not require a disk loading mechanism or that has a disk loading mechanism as an external mechanism, such as a device provided with an external mechanism (for example, a disk device having a changer that handles a plurality of disks) In the first use state, only the basic unit UM is supplied from stock.

On the other hand, as described in detail in the present embodiment, only a mechanism having a basic function for reproducing and / or recording an information signal, such as the optical pickup 6 and its driving mechanism and the rotating mechanism of the turntable 5, is provided. Instead, a disk loading mechanism that moves the disk 9 between a loading position above the turntable 5 and an unloading position outside the device produces the disk device 1 incorporated in one integrated unit. Is the second
In a use state, the basic unit UM and the additional component unit may be supplied from stock, and both may be assembled together to form one unit body.

By employing such a production system, when producing various kinds of optical disc devices having different structures, reproduction and / or recording of information signals of an optical pickup, its driving mechanism, turntable rotating mechanism and the like are performed. A unit UM (that is, a basic unit) provided with a mechanism having a basic function for performing the operation can be commonly used as a unit that provides a basic function to various types of optical disc devices having different structures. As a result,
This makes it possible to simplify parts management and unit management, and to increase the productivity of the disk device assembly process.

In the present embodiment, the first to third loading gears 62 to 64 of the loading drive gear train 61 are used.
Has a rotating shaft integrally formed with each gear body, and the rotating shafts of the gears 62 to 64 are connected to the traverse base 20.
The shaft holes 62h of the pivot bosses 62S to 64S
It was designed to be inserted into 64h and assembled.
Instead, a hole is provided at the center of the first to third loading gears, while a pivot shaft is provided on the traverse base side, and the center hole of each loading gear is fitted to each pivot shaft. Assembling, the first to third loading gears can be rotatably supported by the respective pivot shafts.

In the present embodiment, the disk 9 is a so-called DVD, and the traverse base 20 is supported by the apparatus base 10 via the intermediate base 80 so as to be vertically rotatable. The traverse base 20 is different from the device base 10 as in the case of the aforementioned prior art 2.
The present invention can be effectively applied to the case where the disc 9 is directly supported and the case where the disc 9 is a so-called CD. As described above, the present invention is not limited to the above-described embodiment, and without departing from the gist thereof.
It goes without saying that various improvements or design changes are possible.

[0145]

According to the optical disk apparatus of the first aspect of the present invention, the turntable, the first motor for rotating the turntable, the optical pickup, the drive mechanism therefor, and the second drive which can apply a driving force to the pickup drive mechanism. An additional component unit that is configured to be detachable from the basic unit by including a device base, a disc loading mechanism, a loading drive mechanism, and a power transmission path switching mechanism in a basic unit in which a motor is mounted on a component base. An attachment portion for detachably attaching a gear mechanism for engaging the gear unit is provided.By attaching and detaching the gear mechanism to and from the attachment portion, a use state in which the basic unit is used alone, Use condition in which the additional condition unit is used by assembling them with each other. It is possible. Therefore, when the disk loading mechanism is unnecessary or when the disk loading mechanism is configured as an external mechanism, it is necessary to use the basic unit without assembling the additional component unit and use the disk loading mechanism. In this case, both units may be used in a state where they are assembled together. That is, when producing various types of optical disk devices having different structures, the basic unit has a basic function of reproducing and / or recording information signals such as an optical pickup and its driving mechanism and a turntable rotating mechanism. As a unit having a mechanism, it can be used in common for various types of optical disk devices, so that component management and unit management can be simplified, and the productivity of the disk device assembly process can be greatly increased.

Further, according to the optical disk device of the second aspect of the present invention, the turntable, the first motor for rotating the turntable, the optical pickup, the drive mechanism therefor, and the second drive capable of applying a driving force to the pickup drive mechanism are provided. A basic unit in which a motor is mounted on a component base; and an additional component unit including a device base, a disc loading mechanism, a loading drive mechanism, and a power transmission path switching mechanism, and configured to be detachable from the basic unit. The use state is selectively selected between a first use state in which the basic unit is used alone and a second use state in which the basic unit and the additional component unit are assembled and used. And can be used for use. Therefore, when the disk loading mechanism is unnecessary or when the disk loading mechanism is configured as an external mechanism, it is necessary to use the basic unit without the additional component unit only in the first use state and to incorporate the disk loading mechanism. In some cases, both units may be used in the second state where they are assembled together. That is, when producing various types of optical disk devices having different structures, the basic unit has a basic function of reproducing and / or recording information signals such as an optical pickup and its driving mechanism and a turntable rotating mechanism. As a unit having a mechanism, it can be used in common for various types of optical disk devices, so that component management and unit management can be simplified, and the productivity of the disk device assembly process can be greatly increased.

Further, according to the third aspect of the present invention, basically the same effects as those of the first or second aspect can be obtained. In particular, when the basic unit is used alone, the optical pickup is reciprocated by rotating one motor (second motor) in the forward and reverse directions. In a use state in which the basic unit and the additional component unit are used by assembling them together, one motor (second motor) is continuously rotated in the forward direction (first rotation direction) or the reverse direction. As a result, the moving operation of the optical pickup, the raising / lowering operation of the turntable, and the transferring operation of the disk are performed almost continuously in this order or almost continuously in the reverse direction in the opposite direction, so that the loading and unloading of the disk is performed. When performing this, interference with the turntable can be avoided without moving the disk in the vertical direction.
Therefore, there is no need to provide a disk holder for lifting the disk unlike the conventional disk device. Further, it is possible to fix (clamp) and release the fixation of the disk to the turntable by using the operation of moving or rotating the second base on which the turntable is attached to the first base in the vertical direction. Therefore, unlike the conventional disk device, there is no need to drive the clamper side (chuck plate) vertically. Further, in this case, the moving operation of the optical pickup, the raising / lowering operation of the turntable, and the transfer operation of the disk can be performed by one motor, so that a total of two motors are used together with the first motor for rotating the turntable. Can operate the disk device. That is, the number of motors used can be reduced, the structure of the device can be simplified, and good operation of each component can be obtained more stably.

Further, according to the fourth aspect of the present invention, basically the same effects as in any one of the first to third aspects can be obtained. In particular, the feed rack can be moved to a predetermined position on the inner peripheral side after moving the optical pickup to the innermost end position of the signal recording range of the disk, and the feed rack is moved to a predetermined position on the inner peripheral side. The drive path of the driving force of the second motor is switched by moving the optical pickup to the outer periphery of the disk from the predetermined position, so that the optical pickup is driven by one motor (the second motor). And the switching of the transmission path of the driving force of the second motor can be performed in cooperation with each other.

Further, according to the fifth invention of the present application,
Basically, the same effect as any one of the first to fourth inventions can be obtained. In particular, the component base is supported so as to be rotatable up and down with respect to the device base about one end thereof. Specifically, the cam gear is rotated by the power transmission from the loading drive gear train to move the other end of the component base up and down, whereby the component base is moved vertically with respect to the device base with respect to the one end. Rotated. That is, the driving of one motor (second motor) causes the component base to rotate up and down (and thus to raise and lower the turntable).
It is possible to cooperate with the disk transfer operation.

Further, according to the sixth invention of the present application,
Basically, the same effect as any one of the first to fifth aspects can be obtained. In particular, in this case, the intermediate base is rotatably supported in the vertical direction with respect to the device base, and the component base is supported with respect to the intermediate base. Support and component base support can be performed separately. Therefore, the prior art without the intermediate base (prior art 2)
In comparison with the above, the degree of freedom in setting the elasticity of the support portion when elastically supporting the component base can be increased.
As a result, it is possible to relatively easily achieve both absorption of vibration input from the outside and suppression of vibration that may be caused by rotation of the turntable.

[Brief description of the drawings]

FIG. 1 is an overall perspective view showing an assembled state in a second use state of a disk device according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view of the disk device.

FIG. 3 is an explanatory diagram showing a part of FIG. 2 in an enlarged manner.

FIG. 4 is an explanatory diagram showing a part of FIG. 2 in an enlarged manner.

FIG. 5 is an explanatory plan view showing an assembled state of the traverse base and the device base of the disk device.

FIG. 6 is a partial sectional side view schematically showing a support structure of the traverse base with respect to the device base.

FIG. 7 is a schematic partial cross-sectional side view showing a tilting operation of the traverse base with respect to the device base.

FIG. 8 is an explanatory longitudinal sectional view showing a floating bush attached to the traverse base in an enlarged manner.

FIG. 9 is one of a series of plan explanatory views showing the operation of the drive mechanism of the disk device.

FIG. 10 is one of a series of plan explanatory views showing the operation of the driving mechanism.

FIG. 11 is one of a series of explanatory plan views showing the operation of the driving mechanism.

FIG. 12 is one of a series of plan explanatory views showing the operation of the drive mechanism.

FIG. 13 is one of a series of explanatory plan views showing the operation of the driving mechanism.

FIG. 14 is one of a series of enlarged plan explanatory views showing a switching operation of a power transmission path of the drive mechanism.

FIG. 15 is one of a series of enlarged plan explanatory views showing a switching operation of a power transmission path of the drive mechanism.

FIG. 16 is one of a series of enlarged plan explanatory views showing a switching operation of a power transmission path of the drive mechanism.

FIG. 17 is one of a series of enlarged plan explanatory views showing a switching operation of a power transmission path of the drive mechanism.

FIG. 18 is one of a series of enlarged plan explanatory views showing a switching operation of a power transmission path of the drive mechanism.

FIG. 19 is an enlarged plan explanatory view showing an engaged state of a tray and a tray driving gear.

FIG. 20 is an explanatory plan view of the disk device, showing a tray storage state.

FIG. 21 is an explanatory plan view of the disk device, showing a state in which the tray is pulled out.

FIG. 22 is an enlarged plan view illustrating a disk clamp mechanism of the disk device.

FIG. 23 is an explanatory longitudinal sectional view of the disk clamp mechanism taken along line Y23-Y23 in FIG. 22;

FIG. 24 is an explanatory plan view of a cam gear of the driving mechanism.

FIG. 25 is an explanatory side view of the cam gear as viewed from the direction of arrows Y25-Y25 in FIG. 24;

26 is an explanatory side view of the cam gear as viewed from the direction of arrows Y26-Y26 in FIG. 24;

27 is an explanatory side view of the cam gear as viewed from the direction of arrows Y27-Y27 in FIG. 24;

FIG. 28 is an explanatory side view of the cam gear as viewed from the direction of arrows Y28-Y28 in FIG. 24;

FIG. 29 is an explanatory partial sectional view showing a tooth trace shape in a longitudinal section of the cam gear.

FIG. 30 is an explanatory plan view of a feed rack of the drive mechanism.

FIG. 31 is an explanatory side view of the feed rack as viewed from the direction of arrows Y31-Y31 in FIG. 30;

FIG. 32 is an explanatory rear view of the feed rack.

FIG. 33 is an explanatory side view of the feed rack as viewed from the direction of arrows Y33-Y33 in FIG. 30;

FIG. 34 is an explanatory side view of the feed rack as viewed from the direction of arrows Y34-Y34 in FIG. 30;

FIG. 35 is an explanatory side view of the trigger lever as viewed from the direction of arrows Y35-Y35 in FIG. 36;

FIG. 36 is an explanatory plan view of a trigger lever of the driving mechanism.

FIG. 37 is an explanatory vertical sectional view of the trigger lever, taken along line Y37-Y37 in FIG. 36;

FIG. 38 is an explanatory plan view of a lock lever of the drive mechanism.

39 is an explanatory side view of the lock lever as viewed from the direction of arrows Y39-Y39 in FIG. 38.

40 is an explanatory side view of the lock lever as viewed from the direction of arrows Y40-Y40 in FIG. 38.

FIG. 41 is an explanatory side view of the lock lever as viewed from the direction of arrows Y41-Y41 in FIG. 42;

FIG. 42 is an explanatory plan view of a lock lever of the drive mechanism.

43 is an explanatory side view of the lock lever as viewed from the direction of arrows Y43-Y43 in FIG. 42;

FIG. 44 is a schematic explanatory view of a clamper for explaining a basic principle of a disk clamp mechanism of the disk device.

FIG. 45 is a partially enlarged cross-sectional explanatory view showing a series of disk clamping operations of a clamper for explaining a basic principle of the disk clamp mechanism.

FIG. 46 is an explanatory sectional view showing a series of disk clamping operations of the clamper for explaining the basic principle of the disk clamping mechanism.

FIG. 47 is a perspective view showing a basic configuration of a disk clamp mechanism of the disk device.

FIG. 48 is a partially enlarged cross-sectional explanatory view showing a series of disk clamping operations of a clamper in the disk clamp mechanism.

FIG. 49 is a perspective view showing a state where the gears are assembled to the traverse base of the disk device.

FIG. 50 is a perspective view showing a state where the gears are assembled to the traverse base in the first use state of the disk device.

FIG. 51 is an explanatory longitudinal sectional view showing an assembled state of a pickup guide rod of the disk device and a grounding mechanism of the pickup.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Disk device 3 ... Spindle motor (1st motor) 4 ... 2nd motor 4G ... Motor gear 5 ... Turntable 6 ... Optical pickup 9 ... Optical disk 10 ... Device base 20 ... Traverse base 30 ... Cam gear 30g ... Outer periphery (of cam gear) Tooth part 32 ... Hook part (of cam gear) 34 ... Missing tooth part (of cam gear) 40 ... Feed rack 42 ... Switching rack part (of feed rack) 43 ... Cam groove (of feed rack) 51 ... Rack drive gear train 55 ... Tray 55g Tray rack teeth 56 Tray drive gear 61 Loading drive gear train 62 First loading gear 63 Second loading gear 64 Third loading gear 62S to 64S Pivot boss 62h to 64h Shaft hole 71: trigger lever 73: lock lever 80: intermediate base UM: basic unit

Claims (6)

[Claims] 1. A turntable for rotatably supporting an optical disc, a first motor for rotating the turntable, and an information signal written on and / or recorded on the optical disc rotated by the turntable. An optical pickup for reading out a signal, a pickup driving mechanism for reciprocatingly moving the optical pickup between the inner peripheral side and the outer peripheral side of the optical disk, and a second motor capable of giving a driving force to the pickup driving mechanism A basic unit mounted on a base, the basic unit including a device base for supporting the component base so as to be movable or rotatable in a vertical direction, a first position above the turntable for the optical disc, and a component. A disk loading mechanism for reciprocally transferring the disk to and from a second position outside the base; Between the path for transmitting the driving force transmission path of the second motor to the loading drive mechanism side and the path for transmitting the drive power transmission path of the second motor to the pickup drive mechanism side. An optical disc device, comprising: a mounting portion for detachably mounting a gear mechanism for engaging an additional component unit having a power transmission path switching mechanism for switching to a basic unit. 2. A turntable for rotatably supporting an optical disk, a first motor for driving the turntable to rotate, and information signals written on and / or recorded on the optical disk rotated by the turntable. An optical pickup for reading out a signal, a pickup driving mechanism for reciprocatingly moving the optical pickup between the inner peripheral side and the outer peripheral side of the optical disk, and a second motor capable of giving a driving force to the pickup driving mechanism A basic unit mounted on a base, a device base for supporting the component base in a vertically movable or rotatable manner, a first position above the turntable for the optical disc, and a second position outside the component base. A disc loading mechanism for reciprocatingly transferring the disc and the disc by the driving force of the second motor. A loading drive mechanism for driving the loading mechanism, a power transmission path switching mechanism for switching a transmission path of the driving force of the second motor between a path for transmitting to the loading drive mechanism and a path for transmitting to the pickup drive mechanism. A first use state in which the basic unit is used alone, and the basic unit and the additional unit are mutually assembled. An optical disc device characterized in that the use state can be selectively selected and used between a second use state and a second use state. 3. The second motor is constituted by a motor capable of rotating forward and backward, and in a use state in which the basic unit is used alone, the second motor is driven in a first rotation direction and a direction opposite thereto. By rotating the optical pickup, the optical pickup is reciprocally driven. In a use state in which the basic unit and the additional component unit are assembled and used, the second motor is continuously rotated in the first rotational direction. The moving operation of the optical pickup, the raising / lowering operation of the turntable, and the moving operation of the optical disk are performed substantially continuously in this order, and the second motor is continuously rotated in a direction opposite to the first rotation direction. The optical disc according to claim 1 or 2, wherein each of these operations is performed substantially continuously in a reverse order to the above. Apparatus. 4. The pickup driving mechanism includes a feed rack for moving an optical pickup, and a rack drive gear train including a plurality of gears for driving the feed rack. After moving to the innermost end position of the signal recording range of the optical disc, it can be further moved to a predetermined position on the inner peripheral side, and in a use state in which the basic unit and the additional component unit are used by assembling them with each other, When the feed rack moves to the predetermined position on the inner peripheral side, the feed rack is engaged with the power transmission path switching mechanism, and in this engaged state, the transmission path of the driving force of the second motor causes the pickup drive to move. The path transmitted to the mechanism side is switched to the path transmitted to the loading drive mechanism side, and the feed rack moves from the predetermined position to the outer peripheral side of the disk. By moving to release the engagement state with the power transmission path switching mechanism, the transmission path of the driving force of the second motor is transmitted from the path transmitted to the loading drive mechanism to the optical pickup drive mechanism. 2. The method according to claim 1, wherein the path is switched to
The optical disk device according to claim 3. 5. In a use state in which the basic unit and the additional component unit are used by assembling them with each other, the component base is disposed in an opening formed in the device base, and one end of the component base is centered. The device base is rotatably supported in the vertical direction with respect to the device base. On the device base, a cam groove located near the other end of the component base and raising and lowering the other end of the component base is provided on the outer peripheral portion. The loading drive mechanism includes a loading drive gear train including a plurality of gears, and the final output gear of the loading drive gear train meshes with the outer peripheral teeth of the cam gear to rotate the cam gear. The optical disk device according to claim 1, wherein the other end of the component base is moved up and down. 6. The device base according to claim 1, wherein the component base is rotatably supported in a vertical direction with respect to the device base via an intermediate base positioned between the component base and the device base. The optical disk device according to claim 1.