JP2008159172A - Disk unit - Google Patents

Abstract

The present invention provides a disk device that can suppress scratching of the disk and can further reduce the thickness of the device.
A turntable and a clamper unit that holds a disc between the turntable, a disc insertion slot is formed on one side, and an opening through which the clamper unit can pass is formed on a surface facing the turntable. A housing provided with a rib that protrudes from the periphery of the opening toward the edge and extends linearly from the downstream side in the disc insertion direction to the downstream side; A clamper moving device that moves the clamper unit between a possible position and a retracted position that is farther from the turntable than the edge; a disc transport device that transports the disc between the turntable and the clamper; A disc guide member for guiding the movement of the disc so that the tip of the disc slides on the rib, and a recording / reproducing operation for recording or reproducing the disc. And a device.
[Selection] Figure 5

Description

  The present invention relates to a disk device having a slot-in loading mechanism for loading a disk-shaped recording medium (hereinafter referred to as a disk) such as a CD (compact disk) or a DVD (digital versatile disk) into the apparatus without using a tray. About.

  A slot-in loading mechanism is known as a mechanism for loading a disk into a disk device without using a tray. This mechanism elastically holds a part of a disk inserted into a disk device casing between a long rubber roller and a guide member provided at a position facing the rubber roller, and rotates the rubber roller in this state. Thus, the entire disk is pulled into the housing and set at the disk recording / reproducing position.

  In such a slot-in loading mechanism, when loading the disk into the housing, the disk is horizontally conveyed by the guide member and the rubber roller between the turntable and the clamper which are retracted to positions apart from each other, After completion of the horizontal conveyance, the disk is generally set at the disk recording / reproducing position by moving the turntable and the clamper and sandwiching the disk between them.

  However, the conventional slot inloading mechanism configured as described above has the following problems. That is, in the initial state in which the disc is inserted into the housing and held between the rubber roller and the guide member, the distance between the holding portion and the tip on the disc insertion side is short. There is almost no fluctuation in the disc thickness direction, but as the disc is transported into the housing, the distance between the holding portion and the tip of the disc becomes longer, and the influence of the disc's own weight increases. Some discs run out in the disc thickness direction. In other words, the transport direction of the disc may be shifted in the disc thickness direction, and the disc may come into contact with the clamper or the turntable during the transport and the disc may be damaged. Therefore, in order to allow deviation in the disc thickness direction, it is necessary to ensure a wide space between the clamper and the turntable, making it difficult to reduce the thickness of the device.

On the other hand, in Patent Document 1, the disc is tilted so that the front end of the disc insertion side approaches the surface near the clamper of the housing, and then the clamper and the turntable are transported between the clamper and the turntable. , And the disk is sandwiched between them to eliminate the inclination, thereby reducing the conveyance space necessary only for the conveyance of the disk and making it possible to reduce the thickness. .
Further, in Patent Document 2, the disc insertion side tip is brought into contact with a clamper holder that supports the clamper, and the disc is transported in the abutted state, whereby the disc tip shakes in the disc thickness direction. An apparatus that can reduce the thickness while suppressing the above is disclosed.
JP-A-2005-302212 Japanese Patent Laid-Open No. 11-66675

  In recent years, there has been an increasing demand for thinner devices, and there is a demand for thinner devices than the devices of Patent Documents 1 and 2. Therefore, as one means for reducing the thickness of the apparatus, simply by incorporating the technique of Patent Document 2 into the technique of Patent Document 1 and transporting the disk in the inclined state, the distal end portion on the disk insertion side is It is conceivable to configure such that after passing between the turntable and the clamper, it slides on the surface of the casing near the clamper. With such a configuration, it is possible to suppress the shake in the disc thickness direction at the tip portion of the disc, and thus it seems that the device can be further reduced in thickness.

However, the configuration in which the distal end on the disk insertion side is slid on the surface near the clamper of the housing has the following problems.
That is, when the retracted position of the clamper is positioned closer to the turntable than the surface near the clamper of the housing, the guide member moves in the conveyance direction of the disk and the rubber roller bearing portion When the positional accuracy in the disc thickness direction deteriorates due to dimensional variations in the disc thickness direction, the disc may be caught by the clamper.

  Also, the thinner the device is, the smaller the relative angle between the surface near the clamper of the housing and the disk sliding on the surface (for example, less than 1 degree). In the case where the resin constituting the material is deformed due to sink marks or the like, the flatness may deteriorate and the relative angle may become too small. If a small amount of dust adheres to the disk in such a state, the dust may be pinched between the tip of the disk and the surface near the clamper of the housing, and may be scratched over a wide area of the disk. There is.

  In order to prevent these problems, the retracting position of the clamper is positioned on the side farther from the turntable than the surface in the vicinity of the clamper of the casing, and in order to increase the relative angle, Although it is only necessary to increase the distance between the surface and the turntable, such a configuration cannot realize thinning of the apparatus.

  Accordingly, an object of the present invention is to solve the above-mentioned problems, and in a disk device having a slot-in loading mechanism for loading a disk into the device without using a tray, the disk is prevented from being damaged and further. An object of the present invention is to provide a disk device capable of realizing a thin device.

In order to achieve the above object, the present invention is configured as follows.
According to the first aspect of the present invention, a turntable that rotatably supports and rotates the disk;
A clamper unit capable of rotatably holding the disk with the turntable;
A disk insertion slot for receiving the disk and inserting the disk is formed on one side surface, and an opening through which the clamper unit can pass is formed on a surface facing the turntable. The edge on the table side protrudes from the periphery of the edge toward the edge so as to approach the turntable, and the downstream side of the edge in the disc insertion direction from the downstream portion in the disc insertion direction. A housing with a rib extending linearly toward
A clamper moving device that moves the clamper unit between a disc pressable position where the disc can be pressed on the turntable, and a retracted position that is farther away from the turntable than the edge portion;
A disk transport device that contacts the one surface of the disk inserted from the disk insertion port and transports the disk between the turntable and the clamper;
The disc is in contact with the surface opposite to the one surface of the disc, and the disc is inclined so that the tip portion on the insertion side of the disc moves away from the turntable, and the tip portion is brought into contact with the rib. A disc guide member for guiding the movement of the disc so that the tip portion slides on the rib;
A recording / reproducing apparatus for recording or reproducing data with respect to the disc sandwiched between the turntable and the clamper unit;
A disk device is provided.

  According to a second aspect of the present invention, in the disk device according to the first aspect, the rib is positioned on a plane parallel to the disk insertion direction and passing through the rotation center of the clamper unit. I will provide a.

  According to a third aspect of the present invention, there is provided the disk apparatus according to the first or second aspect, wherein the ribs are uniformly formed from a surface facing the turntable. To do.

  According to a fourth aspect of the present invention, in the disk device according to the first or second aspect, the rib is formed so as to move away from the facing surface toward the downstream side in the disk insertion direction. I will provide a.

  According to a fifth aspect of the present invention, in any one of the first to fourth aspects, the rib is formed in a cross-sectional shape so that an area sliding with the disk is reduced. A disk device is provided.

  According to a sixth aspect of the present invention, there is provided the disc device according to the fifth aspect, wherein the rib is formed in a trapezoidal or arcuate cross-sectional shape.

According to the disk device of the present invention, the disk guide member tilts the disk so that the distal end portion on the insertion side of the disk moves away from the turntable, and the distal end portion comes into contact with and slides on the rib. Is provided so as to guide the movement of the disc, the tip of the disc insertion side cannot be shaken. Therefore, the apparatus can be further reduced in thickness.
In addition, a rib is provided so as to extend linearly from the downstream portion in the disc insertion direction at the edge of the opening of the casing on the turntable side toward the downstream side in the disc insertion direction, and the disc is placed on the rib. Since the insertion-side distal end portion is in contact with and slides, the area where the disk contacts the housing can be reduced. Therefore, even if dust is attached to the disc, it is less likely that the dust will be caught between the ribs and the disc and the disc will be damaged, and even if the disc is damaged, The range can be kept small.
In addition, since the periphery of the opening formed on the surface of the housing facing the turntable is raised by the height of the rib, the retracting position of the clamper unit is moved to the turntable side by the raised amount. be able to. Therefore, even if the rib is provided, the thickness of the device does not increase.
In addition, even if the housing and ribs are made of resin, the ribs can be formed with high accuracy by reducing the occurrence of resin sinks compared to the surface of the housing facing the turntable. The relative angle between the rib and the rib can be maintained with high accuracy. Accordingly, it is possible to suppress damage to the disc.

Before continuing the description of the present invention, the same parts are denoted by the same reference numerals in the accompanying drawings.
DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, exemplary embodiments of the invention will be described with reference to the drawings.

<Embodiment>
A disk device according to an embodiment of the present invention will be described with reference to the drawings. First, an overall configuration of a disk device according to an embodiment of the present invention will be described with reference to FIGS. FIG. 1 is an exploded perspective view of a disk device according to an embodiment of the present invention. FIG. 2 is a partial perspective view for explaining the configuration of each component and device on the support substrate 1 side in the disk device according to the embodiment of the present invention, and FIG. 3 is a diagram different from FIG. It is the fragmentary perspective view seen from the direction. FIG. 4 is a partial perspective view for explaining the configuration of each component and device on the lid 2 side in the disk device according to the embodiment of the present invention. FIG. 5 is a sectional view of the disk device according to the embodiment of the present invention in a standby state in which no disk is inserted. In the following description, it is assumed that the disk device is placed horizontally with the support substrate 1 facing down.

  The disk device according to the embodiment of the present invention includes a case 40 formed of a substantially box-shaped support substrate 1 having an upper opening and a lid 2 provided to cover the upper portion of the support substrate 1. Each component and device shown in FIG. 1 are attached. That is, the support substrate 1 supports each component and device shown in FIG. The lid body 2 is made of a resin containing glass fibers and is strengthened in strength. A disc insertion port 44 for inserting and ejecting a disc-shaped recording medium (hereinafter referred to as a disc) 41 such as a CD or DVD is provided on one side surface of the housing 40 constituted by the support substrate 1 and the lid 2. Is formed. Usually, there are two types of disks: a standard diameter 8 cm disk (hereinafter referred to as a small diameter disk) and a standard diameter 12 cm disk (hereinafter referred to as a large diameter disk). Here, these are collectively referred to simply as a disk 41, and in each drawing, the disk 41 is illustrated as a large-diameter disk.

  A rectangular opening is provided on the bottom surface of the support substrate 1. A rectangular traverse substrate 38 having a size corresponding to the opening is supported at the opening of the support substrate 1 by a pair of rotating shafts 38a and 38a provided on both side surfaces on the downstream side in the disk insertion direction X1. By being inserted into a pair of bearing holes 1d, 1d provided in the substrate 1, they are attached so as to be rotatable. A spindle motor 3 that rotates the disk 41 and an optical pickup 4 that is an example of a recording / reproducing device that records and reproduces data on the disk 41 are attached to the traverse substrate 38.

  As shown in FIG. 5, the spindle motor 3 includes a rotor 3a that is an example of a turntable, a centering ring 3b, a suction plate 3c, a rotating shaft 3d, a magnet 3e, a bearing 3f, a core 3g, It is comprised by the coil 3h. The rotor 3a is formed in a cup shape that opens downward, and a turntable surface 3a-1 for supporting the disk 41 is formed on the upper surface thereof. A rod-shaped rotating shaft 3d passes through the center of the turntable surface 3a-1, and the rotor 3a and the rotating shaft 3d are integrated. The centering ring 3b is fixed around the rotary shaft 3d on the turntable surface 3a-1, and performs centering while holding the center hole of the disk 41. The suction plate 3c is made of a magnetic body formed in a ring shape, and is inserted into a ring-shaped recess formed in the upper part of the centering ring 3b. The magnet 3e is formed in a ring shape, and is provided on the inner peripheral surface of the lower cylindrical portion of the rotor 3a. The bearing 3f is formed in a cylindrical shape and is provided integrally with the support substrate 1, and rotatably holds the lower end portion of the rotating shaft 3d on its inner peripheral surface. The core 3g is fixed to the outer peripheral surface of the bearing 3f so as to face the inner peripheral surface of the magnet 3e. The coil 3h is wound around the core 3g. The spindle motor 3 faces the core 3g integrally formed on the support substrate 1 through the bearing 3f by an electromagnetic force generated between the magnet 3e and the core 3g when a current is applied to the coil 3h. The magnet 3e is rotated, and the rotor 3a is rotated.

  A motor 5 that generates a rotational force when loading the disk 41 into the housing 40 is attached to one end of the support substrate 1 on the downstream side in the disk insertion direction X1. A first pulley 6 is press-fitted into the rotating shaft of the motor 5. A second pulley 8 formed integrally with the worm gear 11 is attached to one side of the same support substrate 1 as the first pulley 6 and upstream of the disc insertion direction X1. A belt 7 is applied to the first pulley 6 and the second pulley 8 in order to transmit the rotational force of the rotating shaft of the motor 5 from the first pulley 6 to the second pulley 8. The second pulley 8 is a helical gear press-fitted into one end of the gear shaft 10 extending in the disc insertion direction X1 by the rotational force of the rotating shaft of the motor 5 transmitted through the first pulley 6 and the belt 7. 9 is rotated to rotate the worm gear 11 press-fitted into the other end of the gear shaft 10. Here, the worm gear 11 is engaged with the helical gear 12, and the helical gear 12 is engaged with the relay gears 13 and 14.

  The relay gear 13 meshes with a roller gear 16 that is press-fitted into one end portion of a roller shaft 18 that extends in the apparatus width direction Y parallel to the bottom surface of the support substrate 1 and orthogonal to the disk insertion direction X1. The slider 17 extending in the insertion direction X1 is engaged with a drive gear 15 that moves in the disc insertion direction X1 or the disc ejection direction X2. Accordingly, the rotational force of the worm gear 11 is transmitted to the roller shaft 18 via the helical gear 12, the relay gear 13 and the roller gear 16, while being applied to the slider 17 via the helical gear 12, the relay gear 14 and the drive gear 15. Communicated. By the gears, the rotational force of the rotating shaft of the motor 5 is reduced, and the rotational torques of the drive gear 15 and the roller gear 16 are increased.

  The roller shaft 18 is rotatably held on opposite side surfaces of the support substrate 1 at both ends thereof. The roller shaft 18 has a small diameter on the center side in the axial direction, and increases in diameter toward both ends. The roller shaft 18 penetrates and engages with a rubber roller 19 formed in a substantially cylindrical shape, and frictional force is applied to the roller gear 16. It is transmitted to the rubber roller 19 by force. The rubber roller 19 is rotated by the rotational force of the roller gear 16 transmitted from the roller shaft 18 to convey the disk 41 in the disk insertion direction X1 or the disk discharge direction X2. In the standby state, the rubber roller 19 is configured such that the height in the apparatus thickness direction Z perpendicular to the disk insertion direction X1 and the apparatus width direction Y is positioned higher than the disk insertion port 44.

  Above the rubber roller 19, a disk guide 20, which is an example of a generally disk-shaped disk guide member that guides the movement of the disk 41 in the disk insertion direction X 1 or the disk discharge direction X 2, extends in the apparatus width direction Y. The disc guide 20 has a pair of rotating shafts 20a provided at both ends on the downstream side in the disc insertion direction X1, and is inserted into grooves 1b and 1b provided on both side surfaces of the support substrate 1, respectively. It is pivotally attached. The disk guide 20 is attached to both ends on the upstream side in the disk insertion direction X1 in a direction approaching the rubber roller 19 by a pair of coiled urging springs 22 and 22 attached to the bottom surface of the support substrate 1, respectively. It is energized. Thus, the disc guide 20 is provided so as to abut against the upper surface of the disc 41 and press the disc 41 against the rubber roller 19 when the disc 41 is inserted between the disc guide 20 and the rubber roller 19.

  Further, when the disc guide 20 is in contact with the disc 41, the upstream side in the disc insertion direction X1 is pulled toward the support substrate 1 side by the biasing spring 22, and the support substrate 1 is moved toward the upstream side in the disc insertion direction X1. Inclined to approach. As a result, the disc guide 20 has a downstream side in the disc insertion direction X1 from an opening 2k formed in the lid 2 to be described later, as the distal end portion 41a on the insertion side of the disc 41 moves downstream in the disc insertion direction X1. It is guided so as to abut and slide on the lower surface.

Further, when the disk guide 20 is in contact with the disk 41, the protrusion 17 a (see FIGS. 2 and 4) provided with a surface 20 b (see FIG. 4) facing the support substrate 1 at the end on the slider 17 side. 4) and is in contact with the surface facing the lid 2. As will be described later, when the slider 17 moves in the disc ejection direction X2, the disc guide 20 moves along the surface 20b on the support substrate 1 side in the disc ejection direction X2 along with the movement. The guide 20 is configured to rotate about the rotation shaft 20a so that the upstream side in the disk insertion direction X1 approaches the lid 2. In the state where the movement of the slider 17 in the disk unloading direction X <b> 2 is completed, the disk guide 20 is substantially parallel to the bottom surface of the lid 2 and the support substrate 1.
The disc guide 20 is formed of a softer material than the disc 41 so as not to damage the disc 41. For example, if the material of the disk 41 is polycarbonate, it is formed of a softer resin such as polyacetal.

  The slider 17 is supported on the side surface of the support substrate 1 so as to be movable in the disk insertion direction X1 and the disk unloading direction X2. A rack 17 b that meshes with the drive gear 15 is formed on the surface of the slider 17 that faces the support substrate 1. The rack 17b and the drive gear 15 are not engaged with each other in the standby state before the insertion of the disk 41 into the housing 40 and during the conveyance of the disk 41 into the housing 40 due to the rotation of the rubber roller 41. In a state where the conveyance into the housing 40 of 41 is completed, they are configured to engage with each other.

  A rack 17c is provided at the upstream end of the slider 17 in the disc insertion direction X1, as shown in FIGS. The rack 17 c meshes with a gear 21 a of a plate-like first switching lever 21 attached in parallel to the bottom surface of the support substrate 1. The first switching lever 21 is rotatable on the support substrate 1 by inserting a rotation shaft (not shown) formed on the support substrate 1 into a bearing hole 21b formed at a position away from the gear 21a. It is supported. Further, as shown in FIG. 4, the first switching lever 21 is provided with an engagement groove 21 c that penetrates the first switching lever 21 in the apparatus thickness direction Z at a position away from the gear 21 a and the bearing hole 21 b. Yes. The engagement groove 21c slidably engages the traverse substrate 38 with an engagement pin 23a (see FIG. 1) provided at a lower portion of the side surface of the substantially rectangular rotating cam 23.

  The rotating cam 23 is movably provided on the groove 1 c formed in the support substrate 1 so as to extend in the apparatus width direction Y, and moves on the groove 1 c according to the rotation of the first switching lever 21. . Further, as shown in FIGS. 3 and 4, the rotating cam 23 is provided with a pair of cam grooves 23 b and 23 b that respectively penetrate the rotating cam 23 in the disc insertion direction X1. The cam grooves 23b and 23b are slidably engaged with a pair of engagement pins 38b and 38b provided at the upstream end of the traverse board 38 in the disc insertion direction X1. Each of the cam grooves 23 b and 23 b has an inclined surface 23 c that is inclined so as to be closer to the support substrate 1 as it approaches the slider 17. The respective engagement pins 38b, 38b of the traverse board 38 are pushed by the inclined surfaces 23c, 23c and moved in the apparatus thickness direction Z as the rotation cam 23 moves in the apparatus width direction Y. That is, as the rotation cam 23 moves in the device width direction Y, the traverse substrate 38 rotates about the rotation shafts 38a and 38a.

The slider 17 is provided with a drive pin 17d that protrudes toward the lid 2 in the apparatus thickness direction Z. The drive pin 17d is attached so as to penetrate the engagement hole 2a formed in the lid body 2 and to jump out of the housing 40.
Further, as shown in FIG. 1, a rotating shaft 2 b that protrudes upward in the apparatus thickness direction Z is provided on the surface of the lid 2 that faces the support substrate 1. A bearing hole 24a formed at the center of the second switching lever 24 is fitted to the rotation shaft 2b so as to be rotatable. In addition, an engagement groove 24b that is slidably engaged with the drive pin 17d of the slider 17 is formed at one end of the second switching lever 24, and the slider 17 has a disc insertion direction X1 and a disc ejection direction X2. The second switching lever 24 is configured to rotate with the movement.

  An arcuate cam surface 24 c is formed at the other end of the second switching lever 24. The cam surface 24c is in contact with a rotating shaft 25b provided at the center of the side surface of the clamp lever 25, which is a plate-like member extending in the disc insertion direction X1 in parallel with the bottom surface of the support substrate 1.

  The clamp lever 25 is connected to a pair of bearing portions 2c provided on the upper surface of the lid 2 with rotating shafts 25a and 25a provided so as to protrude in the apparatus width direction Y at both ends on the upstream side in the disc insertion direction X1. By being inserted respectively, it is provided in the cover body 2 so that rotation is possible. A torsion coil-shaped biasing spring 26 attached to a pin 2d formed on the lid 2 so as to extend in the apparatus width direction Y is provided at the center of the side of the clamp lever 25 opposite to the rotation shaft 25b. Thus, a pin 25c that is urged toward the support substrate 1 is provided. Since the clamp lever 25 is urged so as to approach the support substrate 1 by the urging force of the urging spring 26, the rotation shaft 25 b moves in the apparatus thickness direction Z along the cam surface 24 c of the second switching lever 24. .

  A through-hole 25d that penetrates the clamp lever 25 in the apparatus thickness direction Z is provided at the downstream end of the clamp lever 25 in the disk insertion direction X1. The center of the through hole 25d is the movement of the rotating cam 23 in a state where the clamp lever 25 moves along the second switching lever 24 and approaches the support substrate 1 (a state where it is positioned at a disc pressable position 37B described later). Therefore, it coincides with the center of the centering ring 3a of the spindle motor 3 provided on the traverse board 38 close to the lid 2. A ring-like claw portion 25e is provided around the through hole 25d. The claw portion 25e is sandwiched between the back yoke 29 and the clamper 27 with the back yoke 29 disposed on the upper side and the clamper 27 disposed on the lower side.

In addition, a ring-shaped magnet 28 is disposed between the back yoke 29 and the clamper 27, and the magnet 28 is fitted to a protruding portion 27 b that protrudes upward at the center of the clamper 27. Further, the clamper 27 is provided with three hook portions 27a that are arranged at equal intervals on the outer peripheral portion thereof and project upward, and each of the hook portions 27a corresponds to the back yoke 90. Are respectively engaged with the three engagement holes 29a.
The through hole 25d of the clamp lever 25 is formed to have a diameter smaller than that of the back yoke 29 and the clamper 27, and the clamper unit 37 including the clamper 27, the magnet 28, and the back yoke 29 serves as a claw for the clamp lever 25. It is supported by the part 25e so as not to fall. Further, the gap between the back yoke 29 and the clamper 27 is larger than the thickness of the claw portion 25e, and the clamper unit 37 is rotatably supported by the claw portion 25e of the clamp lever 25.

  Further, the lid 2 is formed with an opening 2k through which the clamper unit 37 can pass. The clamper unit 37 has a disc pressable position 37B (FIG. 9) in which the disc 41 can be pressed onto the turntable surface 3a-1 of the spindle motor 3 when the clamper lever 25 rotates about the rotation shafts 25a and 25a. Reference) and a retracted position 37A (see FIG. 5) that is spaced above the edge 2k-1 of the opening 2k of the lid 2 on the support substrate 1 side. The configuration around the opening 2k of the lid 2 will be described in detail later.

  The lid 2 is provided with a printed circuit board 39 to which reflection type photosensors 39a and 39b for detecting the presence or absence of the disk 41 and a switch 39c for detecting the operation state of the second switching lever 24 are attached. Yes. The reflective photosensor 39a is disposed upstream of the rubber roller 19 in the disk insertion direction X1, and the reflective photosensor 39b is disposed downstream of the rubber roller 19 in the disk insertion direction X1. The reflective photosensors 39a and 39b detect the presence or absence of the disk 41 through the holes 2e and 2f formed in the lid body 2.

  A left centering lever 30 and a right centering lever 31 for positioning the small-diameter disk on the spindle motor 3 are provided in parallel to the lower surface of the lid 2 on the lower surface of the lid 2 on the downstream side in the disc insertion direction X1. ing. The left centering lever 30 and the right centering lever 31 have a pair of bearing holes 2g and 2h provided in the lid body 2 on rotation shafts 30a and 31a provided so as to protrude both upward and downward. By fitting, it is attached to be freely rotatable. Further, the left centering lever 30 and the right centering lever 31 engage with an engagement pin 31 c formed at one end of the right centering lever 31 in an engagement hole 30 c provided at one end of the left centering lever 30. Thus, they are connected so as to be movable integrally.

  The left centering lever 30 has a torsion coil-shaped biasing spring 32 attached to a rotating shaft 30a, and is biased counterclockwise (clockwise in FIG. 4) about the rotating shaft 30a. By this biasing spring 32, the right centering lever 31 movably connected to the left centering lever 30 through the engagement hole 30c applies a force in the clockwise direction (counterclockwise in FIG. 4) about the rotation shaft 31a. is recieving. That is, the positioning pin 30b provided at the other end portion of the left centering lever 30 and the positioning pin 31b provided at the other end portion of the right centering lever 31 are attached in a direction approaching the spindle motor 3 by the biasing spring 32. It is energized.

  A lock lever 33 is rotatably coupled to the upper surface (the surface on the lid 2 side) of the right centering lever 31 through the rotation shaft 30a. An engagement pin 33b (see FIG. 1) is provided at the downstream end of the lock lever 33 in the disc insertion direction X1. The engagement pin 33b of the lock lever 33 engages with the lock portion 2i formed on the lid 2, so that the right centering lever 31 moves counterclockwise (opening outward) about the rotation shaft 31a. The left centering lever 30 connected to the engaging pin 31c formed at one end of the right centering lever 31 through the engaging hole 30c moves in the clockwise direction around the rotation shaft 30a. It is regulated. That is, the left centering lever 30 and the right centering lever 31 are restricted from moving outwardly when the engagement pin 33b of the lock lever 33 is engaged with the lock portion 2i. A contact pin 33a is provided at the upstream end of the lock lever 33 in the disc insertion direction X1. The contact pin 33a contacts the outer periphery of the disk 41 and is pushed in the disk insertion direction X1, thereby rotating the main body of the lock lever 33 counterclockwise (clockwise in FIG. 4). The engagement pin 33b and the lock portion 2i are provided so as to be disengaged.

  Further, the lock lever 33 has a direction in which the engagement pin 33b is engaged with the lock portion 2i (clockwise) by a torsion coil-shaped biasing spring 34 (see FIG. 4) attached to the rotation shaft 31a of the right centering lever 31. Direction). Therefore, the lock lever 33 is normally in a locked state with the engagement pin 33b engaged with the lock portion 2i. The right centering lever 31 connected to the lock lever 33 and the left centering lever 30 connected to the right centering lever 31 are also in a locked state.

  A trigger lever 35 that contacts the disk 41 and triggers the slider 17 is pivotally connected to the lower surface of the right centering lever 31 (the surface on the support substrate 1 side) through the rotation shaft 30a. At the end of the trigger lever 35 on the center side of the apparatus, a contact pin 35 a for contacting the outer periphery of the disk 41 is provided. Further, a drive pin 35b (see FIG. 1) that engages with a cam groove 36a (see FIG. 2) provided in the trigger rod 36 is provided at the end opposite to the trigger lever 35. Is biased in the opposite direction to the lock lever 33, that is, counterclockwise (clockwise in FIG. 4) by a biasing spring 34 attached to the rotation shaft 31a of the right centering lever 31.

  The trigger rod 36 is attached to the support substrate 1 while being slidably guided on the upper surface of the support substrate 1, and is rotated in the disc insertion direction X <b> 1 or the disc ejection direction X <b> 2 by the turning operation of the trigger lever 35. After the movement, it is provided so as to be movable in a direction intersecting with the disc insertion direction 42. Further, the trigger rod 36 is normally biased by a biasing spring 34 so as to stand by on the downstream side in the disc insertion direction X1. When the trigger rod 36 moves in the disc ejection direction X2, the trigger rod 36 abuts against the slider 17 and pushes the slider 17 in the disc insertion direction X1. Further, when the trigger rod 36 moves in the direction crossing the disc insertion direction 42, the drive pin 35b is guided by the cam groove 36a, and the trigger lever 35 is rotated clockwise (counterclockwise in FIG. 4). Is provided. The slider 17 that is pushed by the trigger rod 36 and moves in the disc insertion direction X1 is provided so that the rack 17b provided on the slider 17 and the drive gear 15 are engaged with each other during the operation. The slider 17 is provided with a cam groove 17e (see FIG. 1) for moving the trigger rod 36 in the direction intersecting the disk insertion direction X1.

Next, the configuration of the lid 2 that is a characteristic part of the disk device according to the embodiment of the present invention will be described in detail with reference to FIGS. 4 to 9, FIG.
FIGS. 6-8 is sectional drawing which shows the state in the middle of conveyance of the disk 41 of the disk apparatus concerning Embodiment of this invention. FIG. 9 is a sectional view showing a loading completion state of the disk 41 of the disk apparatus according to the embodiment of the present invention. 10A and 10B are sectional views showing an example of the shape of the rib 2L provided on the lid 2 of the disk device according to the embodiment of the present invention.

  As shown in FIGS. 4 to 9, the edge 2k-1 on the support substrate 1 side of the opening 2k formed in the lid 2 approaches the support substrate 1 side from the periphery toward the edge 2k-1. So as to rise gently. In other words, the periphery of the opening 2k gently protrudes in a truncated cone shape toward the support substrate 1, and the thickness of the periphery of the opening 2k is larger than the thickness of the other part of the lid 2. Hereinafter, this portion is referred to as a raised portion 2j. With this raised portion 2j, the retracted position 37A of the clamper unit 37 that is separated upward from the edge 2k-1 is lowered downward by the thickness of the raised portion 2j, and the height at which the clamper unit 37 protrudes from the upper surface of the lid 2 Is suppressed.

  Further, on the downstream side of the edge 2k-1 of the lid 2 in the disc insertion direction X1, a rib 2L is provided that extends across the raised portion 2j and extends downstream in the disc insertion direction X1. The height of the rib 2L in the apparatus thickness direction Z is uniformly formed to the same height as the edge 2k-1. As a result, the distal end portion 41a on the insertion side of the disk 41 abuts and slides on the rib 2L instead of contacting and sliding the lower surface on the downstream side in the disk insertion direction X1 from the opening 2k of the lid 2. It will slide.

Further, as shown in FIGS. 10A and 10B, the rib 2L has a trapezoidal shape or an arc shape in cross section, and preferably, the cross sectional area becomes smaller toward the downstream side in the disc insertion direction X1. Is provided. As a result, the area of contact and sliding with the tip 41a on the insertion side of the disk 41 is reduced, and the disk 41 is prevented from being damaged. The cross-sectional shape of the rib 2L is not limited to the above, and may be any shape that can reduce the area of contact and sliding with the tip 41a of the disk 41. For example, the edge 2k-1 may be formed in a circular arc shape, and may be formed to change to a trapezoidal shape toward the downstream side in the disc insertion direction X1.
The rib 2L is formed of a member that is formed integrally with the housing 2 and is made of a resin containing glass fiber and has increased strength. The rib 2L may be configured separately from the housing 2. Since the rib 2L can be formed with high accuracy by reducing the occurrence of sink marks and the like that occur during molding as compared with the lower surface of the housing 2, the flatness deteriorates and the tip 41a of the disk 41 and the rib 2K are deteriorated. Can be prevented from becoming small (for example, less than 1 degree).

  In the above description, the height of the rib 2L is made equal to the height of the edge 2k-1, but the present invention is not limited to this. For example, if a sufficient gap (for example, about 0.7 mm) is secured between the upper surface of the disk 41 and the lower end of the rib 2L so that the two do not come into contact with each other even if vibration or the like occurs, the rib 2L has an edge. It may be formed so as to start from the same height as the edge 2k-1 from 2k-1 and move away from the lid 2 toward the downstream side in the disc insertion direction X1. By forming in this way, the relative angle between the tip 41a of the disk 41 and the rib 2L can be increased without increasing the thickness of the device, and the disk 41 can be further prevented from being damaged. It becomes. Further, if the relative angle between the tip 41a of the disk 41 and the rib 2K can be sufficiently secured to prevent the disk 41 from being scratched, the rib 2L is changed from the edge 2k-1 to the edge 2k-1. It may be formed to start at the same height and approach the lid 2 as it goes downstream in the disc insertion direction X1.

Further, the rib 2L is arranged so that the disk 41 is not inclined with respect to the apparatus width direction Y when the disk 41 slides on the rib 2L as shown in FIGS. It is preferable that they are arranged so that they can be supported evenly. Furthermore, the rib 2L is preferably located on a plane parallel to the disc insertion direction X1 and passing through the rotation center of the clamper unit.
Further, the number of ribs 2L is not limited to one, and a plurality of ribs 2L may be provided. Also in this case, the plurality of ribs 2L are arranged symmetrically with respect to a plane that is parallel to the disc insertion direction X1 and passes through the rotation center of the clamper unit so that the disc 41 can be supported evenly in cooperation with the disc guide 20. It is preferable.

The disk device according to the embodiment of the present invention is configured as described above.
In the disk device of this embodiment, the motor 5, the first pulley 6, the belt 7, the second pulley 8, the helical gear 9, the gear shaft 10, the worm gear 11, the helical gear 12, the relay gear 13, and the roller gear. 16, the slider 17, the roller shaft 18, and the rubber roller 19 constitute an example of a disk transport device.
In the disk device of this embodiment, the motor 5, the first pulley 6, the belt 7, the second pulley 8, the helical gear 9, the gear shaft 10, the worm gear 11, the helical gear 12, the relay gear 13, and the relay gear. 14, the drive gear 15, the slider 17, and the clamp lever 25 constitute an example of a clamper moving device.

Next, the operation of the disk device according to the embodiment of the present invention will be described with reference to FIGS. Here, first, the basic operation of the disk device according to the present embodiment will be described, and the abutment and sliding operation between the rib 2L and the tip portion 41a of the disk 41, which are characteristic parts of the present embodiment. Will be described in detail later.
First, the loading operation of a small-diameter disk (standard diameter 8 cm) will be described.

  When the user inserts a small-diameter disk in the disk insertion direction X1 from the disk insertion port 44, the small-diameter disk is guided by the disk guide 20 and guided into the housing 40, and is first attached to the printed wiring board 39. The light from the reflective photosensor 39 a is reflected by the disk 41. When the reflected light sensor 39a detects the reflected light, the motor 5 generates a rotational force on the rotating shaft. The rotational force of the rotating shaft of the motor 5 is decelerated via the first pulley 6, the belt 7, the second pulley 8, the helical gear 9, the gear shaft 10, the worm gear 11, the helical gear 12, and the relay gear 13. Then, it is transmitted to the roller gear 16. At this time, the drive gear 15 is rotated from the helical gear 12 via the relay gear 14, but the drive gear 15 is not engaged with the rack 17 b of the slider 17, and the drive gear 15 rotates idle. When the rotational force of the rotating shaft of the motor 5 is transmitted and the roller gear 16 rotates, the roller shaft 18 rotates accordingly, and the rubber roller 19 engaged with the roller shaft 18 also starts to rotate together by the frictional force. . At this time, the rubber roller 19 is positioned away from the disk guide 20 so as to have a gap narrower than the thickness of the disk, and is idled by the rotation of the roller shaft 18.

  Further, when the user inserts the small-diameter disk in the disk insertion direction X1, the small-diameter disk contacts the rubber roller 19 and is sandwiched between the rubber roller 19 and the disk guide 20. At this time, the small-diameter disk is pressed against the rubber roller 19 by receiving a downward biasing force of the biasing springs 22, 22 via the disk guide 20. At this time, the rubber roller 19 sandwiched between the roller shaft 18 and the small-diameter disk increases the frictional force with the roller shaft 18 and has a large rotational force. The small-diameter disk sandwiched between the rubber roller 19 and the disk guide 20 receives the rotational force of the rubber roller 19 and is conveyed in the disk insertion direction X1.

  Further, when the small-diameter disk is conveyed by the rotational force of the rotating shaft of the motor 5, the small-diameter disk is guided by the disk guide 20 and passes through the gap between the centering ring 3a of the spindle motor 3 and the clamper 27, and the trigger lever. It abuts on the abutment pin 35a of the 35, and then abuts on the positioning pin 30b of the left centering lever 30 and the positioning pin 31b of the right centering lever 31. At this time, since the contact pin 33a of the lock lever 33 provided on the right centering lever 31 is not in contact with the small-diameter disk, the engagement pin 33b of the lock lever 33 engages with the lock portion 2i of the lid 2. The right centering lever 31 is restricted from moving. Since the left centering lever 30 is connected to the engagement pin 31a of the right centering lever 31 and the engagement hole 30a, the movement of the left centering lever 30 is also restricted with the restriction of the movement of the right centering lever 31. That is, the right centering lever 31 is restricted from rotating counterclockwise, and the left centering lever 30 is restricted from rotating clockwise. Therefore, the small-diameter disc is restricted from moving in the disc insertion direction X1 by abutting with the positioning pin 30b of the right centering lever and the positioning pin 31b of the left centering lever 30 whose rotation is restricted, and in the vicinity of the disc recording / reproducing position. And a disc mounting preparation position separated from the same axis. Here, the disk recording / reproducing position means a position where the disk is mounted on the spindle motor 3 and can be reproduced or reproduced and recorded.

  At this time, the trigger lever 35 rotatably provided on the right centering lever 31 rotates clockwise when the contact pin 35a is pushed by the small-diameter disk, and the drive pin 35b moves in the disk ejection direction X2. To do. Since the drive pin 35b is engaged with the cam groove 36a of the trigger rod 36, the trigger rod 36 also moves in the disc discharge direction X2 by the movement of the drive pin 35b in the disc discharge direction X2.

  The trigger rod 36 moved in the disc discharge direction X2 by the trigger lever 35 contacts the slider 17 provided on the upstream side of the trigger rod 36 in the disc insertion direction X1, and pushes the slider 17 in the disc discharge direction X2. The slider 17 pushed by the trigger rod 36 meshes with the drive gear 15 in the rack 17b, receives the rotational force of the drive gear 15 receiving the rotational force of the rotating shaft of the motor 5, and further moves in the disc ejection direction X2. .

  As the slider 17 moves, the first switching lever 21 that meshes with the rack 17c of the slider 17 by the gear 21a rotates around the bearing hole 21b. At this time, since the engaging groove 21c provided in the first switching lever 21 is engaged with the engaging pin 23a of the rotating cam 23, the rotating cam 23 is supported by the support substrate as the first switching lever 21 rotates. It moves so as to approach the slider 17 along one groove 1c. Since the cam grooves 23b, 23b of the rotating cam 23 and the engagement pins 38b, 38b of the traverse board 38 are slidably engaged, the engagement pins 38b, 38b are inclined surfaces 23c of the cam grooves 23b, 23b, As a result, the traverse substrate 38 rotates about the rotation shafts 38a and 38a, and is in a state parallel to the bottom surface of the support substrate 1.

  Further, the drive pin 17 d of the slider 17 protrudes to the upper surface side of the lid body 2 through the engagement hole 2 a of the lid body 2 and engages with the engagement groove 24 b of the second switching lever 24 provided on the upper surface of the lid body 2. Therefore, as the slider 17 moves, the second switching lever 24 rotates around the bearing hole 24a. Since the rotating shaft 25b of the clamp lever 25 is urged by the spring force of the urging spring 26 on the cam surface 24c provided at the end of the second switching lever 24 opposite to the engaging groove 24b. The clamp lever 25 moves downward along the cam surface 24c. Since the clamp lever 25 is rotatably supported on the lid 2 by the rotary shafts 25a and 25a on the upstream side in the disc insertion direction X1, the clamp lever 25 is lowered on the downstream side in the disc insertion direction X1 (support substrate). Close to 1). Accordingly, the clamper unit 37 composed of the clamper 27, the magnet 28, and the back yoke 29 supported by the claw portions 25e around the through hole 25d of the clamp lever 25 is opened from the retracted position 37A. It passes through the portion 2k and descends to a disk pressable position 37B inside the housing 40.

The small-diameter disk stops moving from when the trigger lever 35 moves the trigger rod 36 in the disk discharging direction X2 until the lowering of the clamper unit 37 and the rotation of the traverse substrate 38 are completed. Since the roller shaft 18 is configured to transmit a driving force by a frictional force and can slip, the rotation of the roller shaft 18 is restrained and the rotation of the rotating shaft of the motor 5 does not stop. For this reason, the slider 17 continues to move in the disc ejection direction X <b> 2 by the rotational force of the rotation shaft of the motor 5.
As described above, when the traverse substrate 1 is raised and the clamper unit 37 is lowered, the small-diameter disk is sandwiched between the turntable surface 3 a-1 formed on the spindle motor 3 and the clamper unit 37. At this time, a magnetic force acts between the suction plate 3c of the spindle motor 3 and the magnet 28 of the clamper unit 37, and the small-diameter disk is pressed against and supported by the turntable surface 3a-1 by the magnetic force.

  On the other hand, the protrusion 17a (see FIG. 4) of the slider 17 is in contact with the surface 20b of the disc guide 20 facing the support substrate 1, and the disc guide 20 rotates when the slider 17 moves in the disc ejection direction X2. By rotating around the shafts 20a and 20a, the upstream side in the disc insertion direction X1 is lifted upward (on the lid 2 side) against the spring force of the biasing springs 22 and 22. As a result, the disk guide 20 is separated from the small diameter disk, and the small diameter disk can be rotated by the spindle motor 3.

  Further, when the slider 17 moves in the disc ejection direction X2, the trigger rod 36 moves in the apparatus width direction Y so as to approach the spindle motor 3 by the cam groove 17e. When the trigger rod 36 moves, the cam pin 36b pushes the drive pin 35b of the trigger lever 35 in the disc discharge direction X2, and the trigger lever 35 rotates the contact pin 35a away from the small-diameter disc (clockwise). . As the slider 17 moves in the disc discharge direction X2, the second switching lever 24 engaged with the drive pin 17d of the slider 17 by the engagement groove 24b rotates about the bearing hole 24a, and the switch 39c. And the switch 39c is turned ON. The rotation of the rotating shaft of the motor 5 is stopped by turning on the switch 39c. Thereby, loading of the small-diameter disk to the disk recording / reproducing position is completed. As a result, the spindle motor 3 rotates the small-diameter disk, and the optical pickup 4 can record or reproduce data on the small-diameter disk.

Next, the discharge operation of the small diameter disc will be described.
The operation for ejecting the small-diameter disk is basically the reverse of the loading operation.

When an instruction to start ejecting the small-diameter disk is issued, for example, by pressing an eject button provided separately in the apparatus, the motor 5 generates a rotational force on the rotating shaft in the direction opposite to that during the loading operation. The rotational force of the rotating shaft of the motor 5 is transmitted to the drive gear 15 by each gear, and the slider 17 is moved in the disc insertion direction X1. As the slider 17 moves, the second switching lever 24 and the first switching lever 21 rotate to raise the clamper unit 37 from the disk pressable position 37B to the retracted position 37A. Let Thereby, the clamper unit 37 and the spindle motor 3 are separated from each other, and a moving space for the disk 41 is generated between them. At the same time, as the slider 17 moves, the disk guide 20 descends and the small-diameter disk is pressed against the rubber roller 19 and sandwiched. Since the rubber roller 19 is always rotating while the motor 5 is rotating, when the disk 41 comes into contact with the rubber roller 19, the disk 41 is conveyed in the disk discharge direction X2. At this time, the clamper unit 37 and the spindle motor 3 are completely retracted from the small-diameter disk and do not hinder the conveying operation of the small-diameter disk.
Further, as described above, the slider 17 that moves in the disc insertion direction X1 is finally disengaged from the rack 17b, and returns to the initial position together with the trigger rod 35.

  Further, when the rubber roller 19 rotates in the reverse direction and the small-diameter disk is moved in the disk ejection direction X2, the reflective photosensor 39b detects that the light reflected by the small-diameter disk is no longer reflected. In response to this, the motor 5 stops the driving operation. At this time, the small-diameter disk stops in a state of being sandwiched between the rubber rollers 19 because the reflective photosensor 39b is disposed downstream of the rubber roller 19 in the disk insertion direction X1. Therefore, the small diameter disc does not fall out of the device.

Next, a loading operation of a large diameter disk (standard diameter 12 cm) will be described.
When the user inserts a large-diameter disk from the disk insertion port 44 in the disk insertion direction X1, the large-diameter disk is guided by the disk guide 20 and guided into the housing 40, and is first attached to the printed wiring board 39. The reflected light of the reflective photosensor 39 a is reflected by the disk 41. When the reflected light sensor 39a detects the reflected light, the motor 5 generates a rotational force on the rotating shaft. The rotational force of the rotating shaft of the motor 5 was decelerated through the first pulley 6, the belt 7, the second pulley 8, the helical gear 9, the gear shaft 10, the worm gear 11, the helical gear 12, and the relay gear 13. Then, it is transmitted to the roller gear 16. At this time, the drive gear 15 is rotated from the helical gear 12 via the relay gear 14, but the drive gear 15 is not engaged with the rack 17 b of the slider 17, and the drive gear 15 rotates idle. When the rotational force of the rotating shaft of the motor 5 is transmitted and the roller gear 16 rotates, the roller shaft 18 rotates accordingly, and the rubber roller 19 engaged with the roller shaft 18 also starts to rotate together by the frictional force. . At this time, the rubber roller 19 is positioned away from the disk guide 20 so as to have a gap narrower than the thickness of the disk, and is idled by the rotation of the roller shaft 18.

  Further, when the user inserts the large-diameter disk in the disk insertion direction X1, the large-diameter disk comes into contact with the rubber roller 19 and is sandwiched between the rubber roller 19 and the disk guide 20. At this time, the large-diameter disk receives an upward biasing force of the biasing springs 22 and 22 through the disk guide 20 and is pressed against the rubber roller 19. At this time, the rubber roller 19 sandwiched between the roller shaft 18 and the large-diameter disk increases the frictional force with the roller shaft 18 and has a large rotational force. The large-diameter disk sandwiched between the rubber roller 19 and the disk guide 20 receives the rotational force of the rubber roller 19 and is conveyed in the disk insertion direction X1.

  Further, when the large-diameter disk is transported by the rotational force of the rotating shaft of the motor 5, the large-diameter disk is guided by the disk guide 20 and passes through the gap between the centering ring 3a of the spindle motor 3 and the clamper 27 to be locked. Abutting on the abutting pin 33a of the lever 33, the abutting pin 33a is pushed. When the contact pin 33a is pushed, the lock lever 33 rotates counterclockwise. By this rotation, the engagement pin 33b provided at the end opposite to the contact pin 33a rotates clockwise, and the engagement between the engagement pin 33b and the lock portion 2i of the lid 2 is released. The lever is unlocked.

  Furthermore, when the large-diameter disk is conveyed by the rotational force of the rotating shaft of the motor 5, the large-diameter disk contacts the contact pin 35a of the trigger lever 35, and then the positioning pin 30b of the left centering lever 30 and the right It contacts the positioning pin 31b of the centering lever 31. At this time, since the lock of the lock lever 33 is released, the trigger lever 35, the left centering lever 30, and the right centering lever 31 are pushed against the outer peripheral portion of the large-diameter disc without being restricted in movement. Being opened outward. That is, the trigger lever 35 and the left centering lever 30 rotate clockwise, and the right centering lever 31 rotates counterclockwise.

  Furthermore, when the large-diameter disk is conveyed in the disk insertion direction X1 by the rotational force of the rotating shaft of the motor 5, the contact pin 35a of the trigger lever 35, the positioning pin 30b of the left centering lever 30, and the right centering lever 31 The positioning pin 31b is pushed and finally moved to the vicinity of the engaging pin 31c of the right centering lever 31 and stopped, and is positioned at the disk mounting preparation position. At this time, the contact pin 35a of the trigger lever 35 is pushed clockwise by the large-diameter disk and rotates in the clockwise direction. Therefore, the drive pin 35b provided at the end opposite to the contact pin 35a is in the disk ejection direction X2. Moving. By the movement of the drive pin 35b in the disc discharge direction X2, the trigger rod 36 engaged with the drive pin 35b and the cam groove 36a also moves in the disc discharge direction X2.

  The trigger rod 36 that moves in the disc ejection direction X2 by the trigger lever 35 contacts the slider 17 provided on the upstream side of the trigger rod 36 in the disc insertion direction X1, and pushes the slider 17 in the disc ejection direction X2. The slider 17 pushed by the trigger rod 36 meshes with the drive gear 15 in the rack 17c, receives the rotational force of the drive gear 15 receiving the rotational force of the rotational shaft of the motor 5, and further moves in the disc ejection direction X2. .

  As the slider 17 moves, the first switching lever 21 that meshes with the rack 17c of the slider 17 by the gear 21a rotates around the bearing hole 21b. At this time, since the engaging groove 21c provided in the first switching lever 21 is engaged with the engaging pin 23a of the rotating cam 23, the rotating cam 23 is supported by the support substrate as the first switching lever 21 rotates. It moves so as to approach the slider 17 along one groove 1c. Since the cam grooves 23b, 23b of the rotating cam 23 and the engaging pins 38b, 38b of the traverse board 38 are slidably engaged, the engaging pins 38b, 38b are inclined surfaces 23c, 23c of the cam grooves 23b, 23b. As a result, the traverse substrate 38 rotates about the rotation shafts 38a, 38a and is in a state parallel to the bottom surface of the support substrate 1.

  Further, the drive pin 17 d of the slider 17 protrudes to the upper surface side of the lid body 2 through the engagement hole 2 a of the lid body 2 and engages with the engagement groove 24 b of the second switching lever 24 provided on the upper surface of the lid body 2. Therefore, as the slider 17 moves, the second switching lever 24 rotates around the bearing hole 24a. The rotating shaft 25b of the clamp lever 25 is urged by the spring force of the urging spring 26 on the cam surface 24c provided at the end on the opposite side of the engagement groove 24b of the second switching lever 24. The clamp lever 25 moves downward according to the cam surface 24c. Since the clamp lever 25 is rotatably supported on the lid 2 by the rotary shafts 25a and 25a on the upstream side in the disc insertion direction X1, the clamp lever 25 is lowered on the downstream side in the disc insertion direction X1 (support substrate). Close to 1). Accordingly, the clamper unit 37 composed of the clamper 27, the magnet 28, and the back yoke 29 supported by the claw portion 25e around the through hole 25d of the clamp lever 25 passes through the opening 2k from the retracted position 37A. As a result, the disk descends to the disk pressable position 37 </ b> B inside the housing 40.

The small-diameter disk stops moving from when the trigger lever 35 moves the trigger rod 36 in the disk discharging direction X2 until the lowering of the clamper unit 37 and the rotation of the traverse substrate 38 are completed. Since the roller shaft 18 is configured to transmit a driving force by a frictional force and can slip, the rotation of the roller shaft 18 is restrained and the rotation of the rotating shaft of the motor 5 does not stop. For this reason, the slider 17 continues to move in the disc ejection direction X <b> 2 by the rotational force of the rotation shaft of the motor 5.
As described above, when the traverse substrate 1 is raised and the clamper unit 37 is lowered, the large-diameter disk is sandwiched between the turntable surface 3 a-1 formed on the spindle motor 3 and the clamper unit 37. At this time, a magnetic force acts between the adsorption plate 3c of the spindle motor 3 and the magnet 28 of the clamper unit 37, and the large-diameter disk is pressed against and supported by the turntable surface 3a-1.

On the other hand, the protruding portion 17a (see FIG. 4) of the slider 17 is in contact with the surface 20b of the disc guide 20 facing the support substrate 1, and the disc guide 20 rotates when the slider 17 moves in the disc ejection direction X2. By rotating around the shafts 20a and 20a, the upstream side in the disc insertion direction X1 is lifted upward (on the lid 2 side) against the spring force of the biasing spring 22. As a result, the disk guide 20 is separated from the large diameter disk, and the large diameter disk can be rotated by the spindle motor 3.
Further, when the slider 17 moves in the disc ejection direction X2, the trigger rod 36 moves in the apparatus width direction Y so as to approach the spindle motor 3 by the cam groove 17e. When the trigger rod 36 moves, the cam pin 36b pushes the drive pin 35b of the trigger lever 35 in the disc discharge direction X2, and the trigger lever 35 rotates the contact pin 35a away from the small-diameter disc (clockwise). . As the slider 17 moves in the disc discharge direction X2, the second switching lever 24 engaged with the drive pin 17d of the slider 17 by the engagement groove 24b rotates about the bearing hole 24a, and the switch 39c. And the switch 39c is turned ON. The rotation of the rotating shaft of the motor 5 is stopped by turning on the switch 39c. Thereby, the loading of the large-diameter disk to the disk recording / playback position is completed. As a result, the spindle motor 3 rotates the large-diameter disk, and the optical pickup 4 can record or reproduce data on the large-diameter disk.

Next, the large-diameter disc ejection operation will be described.
The discharging operation of the large-diameter disk is basically the reverse of the loading operation.

When an instruction to start ejecting the small-diameter disk is issued, for example, by pressing an eject button provided separately in the apparatus, the motor 5 generates a rotational force on the rotating shaft in the direction opposite to that during the loading operation. The rotational force of the rotating shaft of the motor 5 is transmitted to the drive gear 15 by each gear, and the slider 17 is moved in the disc insertion direction X1. As the slider 17 moves, the second switching lever 24 and the first switching lever 21 rotate to raise the clamper unit 37 from the disk pressable position 37B to the retracted position 37A. Let Thereby, the clamper unit 37 and the spindle motor 3 are separated from each other, and a moving space for the disk 41 is generated between them. At the same time, as the slider 17 moves, the disk guide 20 descends and the large-diameter disk is pressed against the rubber roller 19 and sandwiched. Since the rubber roller 19 is always rotating while the motor 5 is rotating, when the disk 41 comes into contact, the disk 41 is conveyed in the disk discharge direction X2. At this time, the clamper 27 is completely retracted from the large-diameter disk and does not hinder the conveying operation of the large-diameter disk.
Further, as described above, the slider 17 that moves in the disc insertion direction X1 is finally disengaged from the rack 17b, and returns to the initial position together with the trigger rod 35.

  Further, when the rubber roller 19 rotates in the reverse direction and the large-diameter disk is moved in the disk ejection direction X2, the reflection type photosensor 39b reflects the light reflected by the large-diameter disk. In response to this, the motor 5 stops the driving operation. At this time, the large-diameter disk stops in a state of being sandwiched between the rubber rollers 19 because the reflective photosensor 39b is disposed downstream of the rubber roller 19 in the disk insertion direction X1. Therefore, the large diameter disc does not fall out of the device.

  Next, the abutment and sliding operation of the rib 2L and the tip 41a of the disk 41, which are characteristic parts of the disk device according to the embodiment of the present invention, and the respective actions of the rib 2L and the raised portion 2j are shown in FIG. Details will be described below with reference to FIG. The contact and sliding operations described here are the same for the small-diameter disk and the large-diameter disk.

  FIG. 6 shows a state where the disc 41 is being transported in the disc insertion direction X1 after the disc 41 is inserted from the disc insertion port 44. As shown in FIG. 6, the disk 41 is lowered in accordance with the clamper unit 37 located at the retracted position 37A while being inclined in accordance with the disk guide 20 inclined upward in the disk insertion direction X1. It is conveyed by the rotation of the rubber roller 19 toward the gap with the spindle motor 3 that is present. At this time, since the clamper unit 37 is positioned at the retracted position 37A above the edge 2k-1 of the lid 2, the disk 41 is caught by the clamper 27 even if the guide accuracy of the disk guide 20 is poor. Rather, it is conveyed downstream in the disc insertion direction X1. Further, since the protruding portion 2j protrudes downward toward the turntable surface 3a-1 of the spindle motor 3, the upward retracting amount of the clamper 27 can be reduced, so that the apparatus can be thinned. It has become.

  FIG. 7 shows a state where the distal end portion 41a on the insertion side of the disc 41 has reached the downstream side of the raised portion 2j in the disc insertion direction X1. Since the disk 41 is guided by the disk guide 20 and is conveyed while facing obliquely upward, it contacts the rib 2L and is conveyed in the disk insertion direction X1 in this contact state. That is, the distal end portion 41a on the insertion side of the disk 41 slides on the rib 2L.

  At this time, since the edge 2k-1 and the rib 2L are formed at the same height, there is no possibility that the tip 41a on the insertion side of the disk 41 is caught by the rib 2L. At this time, the relative angle θ2 between the disc 41 in the disc insertion direction X1 of the raised portion 2j formed on the lower surface of the lid 2 and the disc 41 is very small. The relative angle θ1 between the rib 2L on which 41a slides and the disk 41 is sufficiently large (for example, 1 degree or more). Therefore, even if dust adheres to the upper surface of the disk 41, the possibility that the dust will be caught between the rib 2L and the disk 41 is reduced, and the damage to the disk 41 is suppressed.

  FIG. 8 shows a state in which the conveyance of the disc 41 in the disc insertion direction X1 is completed. As shown in FIG. 8, since the rib 2k is formed with a uniform height from the lower surface of the lid 2, the relative angle θ1 between the rib 2L and the disk 41 is kept constant. Further, since the rib 2L is formed in a trapezoidal shape or an arc shape in cross section and is formed in parallel with the disc insertion direction X1, the contact and sliding area between the disc 41 and the rib 2L is reduced. Yes. Therefore, even if dust adheres to the upper surface of the disk 41, the possibility that the dust will be caught between the rib 2L and the disk 41 is low, and even if the disk 41 is damaged, its range Can be kept small.

  Further, since the tip 41a of the disk 41 slides on the rib 2L, the disk 41 is conveyed in a stable relative distance from the centering ring 3a of the spindle motor 3 without swinging in the apparatus thickness direction Z. Therefore, since the gap between the disk 41 and the centering ring 3a can be reduced, the retracting amount of the spindle motor 3 below can be reduced, and the apparatus can be thinned. Further, since the disk 41 does not swing in the apparatus thickness direction Z, the contact between the lower surface (recording surface) of the disk 41 and the centering ring 3a can be prevented, and damage to the disk 41 can be suppressed. Therefore, the possibility that the disk 41 cannot be recorded or reproduced can be suppressed.

  FIG. 9 shows a state in which loading of the disc 41 to the disc recording / reproducing position is completed. At this time, the disk guide 20 that has pressed the disk 41 against the rubber roller 19 is retracted upward, and the disk 41 is sandwiched between the turntable surface 3a-1 of the spindle motor 3 and the clamper unit 37, and the lid 2 It is in the parallel state from the inclined state with respect to the lower surface. As a result, the disk 41 is moved away from the rib 2L, and a gap is generated between the disk 41 and the rib 2L so that even if the disk 41 rotates, it does not touch the rib 2L.

According to the disk device of the embodiment of the present invention, the disk guide 20 tilts the disk 41 so that the distal end portion 41a on the insertion side of the disk 41 is away from the turntable surface 3a-1 by the disk guide 20, and the distal end portion 41a is the rib 2L. Since it is provided to guide the movement of the disk 41 so that it slides in contact with the top, the tip 41a cannot swing. Therefore, the apparatus can be further reduced in thickness.
Further, the rib 2L is linearly extended from the downstream portion in the disc insertion direction X1 of the edge portion 2k-1 on the lower surface side of the opening 2k of the lid 2 toward the downstream side in the disc insertion direction X1. Since the tip 41a is in contact with and slides on the rib 2L, the area where the disk 41 contacts the lid 2 can be reduced. Therefore, even if dust adheres to the disc 41, the possibility that the dust is caught between the rib 2L and the disc 41 and the disc 41 is damaged becomes low. Even if the disk 41 is damaged, the range can be kept small.
Further, since the periphery of the opening 2k formed on the surface of the lid 2 facing the support substrate 1 is raised by the height of the rib 2L, the retracted position 37A of the clamper unit 37 is set by the raised amount. It can be moved to the support substrate 1 side. Therefore, even if the rib 2L is provided, the thickness of the device does not increase.
Even if the lid 2 and the rib 2L are formed of resin, the rib 2L is less affected by resin sink marks and the like than the lower surface of the lid 2 and can be formed with high accuracy. The relative angle with 2L can be maintained with high accuracy. Therefore, damage to the disk 41 can be suppressed.

  In the embodiment of the present invention, the disk device is described as being placed horizontally with the support substrate 1 facing down. However, the present invention is not limited to this, and for example, the support substrate 1 and the lid 2 are erected. The disk device may be placed vertically.

  The disk device according to the present invention can prevent the disk from being scratched and can further reduce the thickness of the device. Therefore, a slot-in for loading a disk-shaped recording medium such as a CD or DVD into the device without using a tray. This is useful for a disk device having a loading mechanism.

It is a disassembled perspective view of the disc apparatus concerning embodiment of this invention. FIG. 3 is a partial perspective view for explaining the configuration of each component and device on the support substrate side in the disk device according to the embodiment of the present invention. FIG. 6 is another partial perspective view for explaining the configuration of each component and device on the support substrate side in the disk device according to the embodiment of the present invention. FIG. 3 is a partial perspective view for explaining the configuration of each part of the lid and the device in the disk device according to the embodiment of the present invention. It is sectional drawing in the standby state of the disc apparatus concerning embodiment of this invention. It is sectional drawing which shows the state in the middle of conveyance of the disk of the disk apparatus concerning embodiment of this invention. It is another sectional view showing the state in the middle of conveyance of the disk of the disk device concerning the embodiment of the present invention. It is sectional drawing which shows the loading completion state of the disk of the disk apparatus concerning embodiment of this invention. It is sectional drawing which showed an example of the shape of the rib of the cover body of the disc apparatus concerning embodiment of invention. It is sectional drawing which showed an example of the shape of the rib of the cover body of the disc apparatus concerning embodiment of this invention. It is sectional drawing which showed another example of the shape of the rib of the cover body of the disc apparatus concerning embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Support substrate 1b Groove 2 Lid 2a Engagement hole 2b, 20a, 25a, 25b, 30a, 31a, 38a Rotating shaft 2c Bearing part 2d, 25c Pin 2e, 2f Hole 2g, 2h, 21b, 24a Bearing hole 2i Lock Part 2j Raised part 2k Opening 2L Rib 3 Spindle motor 3a Rotor 3a-1 Turntable surface 3b Centering ring 3c Suction plate 3d Rotating shaft 3e Magnet 3f Bearing 3g Core 3h Coil 4 Optical pickup 5 Motor 6 First pulley 7 Belt 8 Second pulley 9, 12 Helical gear 10 Gear shaft 11 Worm gear 13, 14 Relay gear 15 Drive gear 16 Roller gear 17 Slider 17a Protrusion 17b, 17c Rack 17d, 35b Drive pin 17e, 23b, 36a Cam groove 18 Roller shaft 19 Rubber roller 20 Disc guide 20b Surface 21 First switching Bar 21a Gear 21c, 24b Engaging groove 22, 26, 32, 34 Energizing spring 23 Rotating cam 23a, 31c, 33b, 38b Engaging pin 23c Slope 24 Second switching lever 24c Cam surface 25 Clamp lever 25d Through hole 25e Claw part 27 Clamper 27a Hook part 27b Projection part 28 Magnet 29 Back yoke 29a, 30c Engagement hole 30 Left centering lever 30b, 31b Positioning pin 31 Right centering lever 33 Lock lever 33a, 35a Contact pin 35 Trigger lever 36 Trigger rod 37 Clamper unit 38 Traverse board 39 Printed wiring board 39a, 39b Reflective photo sensor 39c Switch 40 Housing 41 Disk 44 Disk insertion slot

Claims (6)

A turntable that rotatably supports the disk and is driven to rotate;
A clamper unit capable of rotatably holding the disk with the turntable;
A disk insertion slot for receiving the disk and inserting the disk is formed on one side surface, and an opening through which the clamper unit can pass is formed on a surface facing the turntable. The edge on the table side protrudes from the periphery of the edge toward the edge so as to approach the turntable, and the downstream side of the edge in the disc insertion direction from the downstream portion in the disc insertion direction. A housing with a rib extending linearly toward
A clamper moving device that moves the clamper unit between a disc pressable position where the disc can be pressed on the turntable, and a retracted position that is farther away from the turntable than the edge portion;
A disk transport device that contacts the one surface of the disk inserted from the disk insertion port and transports the disk between the turntable and the clamper;
The disc is tilted so that the tip of the disc on the side opposite to the one surface of the disc moves away from the turntable, and the tip is in contact with the rib. A disk guide member for guiding the movement of the disk so as to slide;
A recording / reproducing apparatus for recording or reproducing data with respect to the disc sandwiched between the turntable and the clamper unit;
A disk device comprising:   2. The disk device according to claim 1, wherein the rib is positioned on a plane parallel to the disk insertion direction and passing through the rotation center of the clamper unit.   3. The disk device according to claim 1, wherein the rib has a uniform height from a surface facing the turntable. 4.   3. The disk device according to claim 1, wherein the rib is formed so as to move away from the facing surface toward the downstream side in the disk insertion direction. 4.   5. The disk device according to claim 1, wherein the rib is formed in a cross-sectional shape that reduces a sliding area with the disk.   6. The disk device according to claim 5, wherein the rib is formed in a trapezoidal or arcuate cross-sectional shape.

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