JP2013222490A - Disk device - Google Patents

Abstract

The present invention provides a disk device that can increase the amount of pop-up of a disk when the disk is ejected and can suppress damage to the disk.
A slot-in type disk device, in which a disk is driven by rotating one of a pair of rollers in a state where a peripheral edge of the disk is sandwiched between a pair of rollers disposed on both left and right sides of the disk. A disc transport mechanism configured to carry in or out, and a disc at a position closer to the disc insertion port than the other of the pair of rollers when the disc is ejected to the disc insertion port and rotation of one of the pair of rollers is stopped. And a disc brake that clamps the disc in cooperation with one of the pair of rollers.
[Selection] Figure 12

Description

  The present invention relates to a slot-in type disk apparatus configured to convey a disk-shaped recording medium (hereinafter referred to as a disk) such as a CD, a DVD, or a BD into and out of a casing without using a tray.

  Conventionally, this type of disk device is usually configured to insert a disk directly into the casing through a disk insertion slot provided in the front of the casing. The disc inserted through the disc insertion slot is transported to a reproducible position by a disc transport mechanism having at least a pair of rollers.

  There are two known methods for transporting a disc by the disc transport mechanism. One is a system (hereinafter, referred to as an upper and lower roller system) in which the disk is sandwiched and conveyed in the thickness direction by a pair of rollers disposed above and below the disk. The other is a system (hereinafter, referred to as a side roller system) in which the peripheral edge of the disk is sandwiched and conveyed by a pair of rollers arranged on both the left and right sides of the disk (for example, Patent Document 1: JP 2011-227983 A). Issue gazette).

JP 2011-227983 A

  In the slot-in type disk device, the disk is ejected with a part protruding from the disk insertion slot. The larger the pop-out amount of the disc, the easier it is for the user to remove the disc.

  In the up-and-down roller system, the disk is sandwiched between the pair of rollers in the thickness direction, so that the contact area between the pair of rollers and the disk is large. For this reason, even if the amount of protrusion of the disk is increased, the disk can be firmly held by the pair of rollers, and the disk can be prevented from dropping out of the casing.

  However, the upper and lower roller system has a problem that the area where the roller contacts the recording surface of the disk increases, and the disk is easily damaged. For this reason, it is not appropriate to employ the upper and lower roller system in a disk device such as a disk recorder that is sensitive to disk scratches.

  On the other hand, in the side roller system, since the peripheral edge of the disk is sandwiched between a pair of rollers, the roller does not contact the recording surface of the disk (or the contact area is small). Therefore, scratches on the disc can be suppressed. Therefore, the side roller method is suitable for a disk device such as a disk recorder.

  However, in the side roller system, the contact area between the pair of rollers and the disk is small, and the holding force of the disk by the pair of rollers is small. Therefore, if the amount of protrusion of the disk is increased, the disk easily falls out of the housing.

  As a method for suppressing the dropout of the disc, a method using the frictional force of a dustproof cover usually provided at the disc insertion slot can be considered. Here, the dust cover is provided for the purpose of preventing foreign matters such as dust and dust from entering the housing through the disk insertion slot. The dust cover is provided with a slit slightly smaller than the maximum diameter portion of the disk. The disc is brought into and discharged from the housing through the slit while contacting the portion around the slit of the dustproof cover. For this reason, dropping of the disk can be suppressed by increasing the frictional force of the dustproof cover. However, when the frictional force of the dustproof cover is increased, another problem arises that the frictional force impedes the loading and unloading of the disc.

  In addition, since the dustproof cover is in direct contact with the disk, an elastic sheet made of a material that hardly damages the disk such as felt is usually used for the dustproof cover. However, when the frictional force of the dustproof cover is increased, even if an elastic sheet made of such a material is used, it becomes impossible to suppress damage to the disk. Therefore, there is a trade-off relationship between increasing the amount of protrusion of the disc when the disc is ejected and suppressing damage to the disc.

  An object of the present invention is to solve the above-described problems, and to provide a disk device capable of increasing the amount of protrusion of the disk when the disk is ejected and suppressing damage to the disk.

In order to achieve the above object, the present invention is configured as follows.
According to the present invention, a slot-in type disk device is provided with a disk transport mechanism capable of carrying a disk inserted from a disk insertion slot into a casing and discharging the disk loaded into the casing to the disk insertion slot. Because
The disk transport mechanism carries in or ejects the disk by rotationally driving one of the pair of rollers in a state where the peripheral edge of the disk is sandwiched between a pair of rollers disposed on both the left and right sides of the disk. Configured as
The disk device further includes:
When the disk is ejected to the disk insertion port and rotation of one of the pair of rollers is stopped, the disk contacts the peripheral edge of the disk at a position closer to the disk insertion port than the other of the pair of rollers, Provided is a disk device including a disk brake that clamps the disk in cooperation with one of a pair of rollers.

  According to the disk device according to the present invention, by providing the disk brake, it is possible to increase the amount of protrusion of the disk when the disk is ejected and to suppress damage to the disk.

1 is an external perspective view showing a disk device and a disk according to an embodiment of the present invention. FIG. 2 is an exploded perspective view of the disk device of FIG. 1. It is a top view which shows the attachment state of each component attached to a mechanical chassis. It is a top view which shows the state which inserted the disk in the disk apparatus of FIG. FIG. 2 is a top view showing a state in the middle of conveying a disc inserted into the disc device of FIG. 1 to a reproducible position. FIG. 2 is a top view showing a state in which a disc inserted into the disc device of FIG. 1 is conveyed to a reproducible position. It is a top view which shows the attachment state of a pair of roller arm and a pair of link arm. It is a bottom view which shows the state which a pair of roller arm rotated in the direction which mutually approaches. It is a bottom view which shows the state which a pair of roller arm rotated in the direction away from each other. FIG. 2 is a top view showing a state in which a disk in the disk device of FIG. 1 is positioned at a reproducible position for ejection to a disk insertion slot. FIG. 2 is a top view showing a state in the middle of ejecting a disk in the disk device of FIG. 1 from a reproducible position to a disk insertion slot. FIG. 2 is a top view showing a state in the middle of ejecting a disk in the disk device of FIG. 1 from a reproducible position to a disk insertion slot. FIG. 2 is a top view showing a state in which a disk in the disk device of FIG. 1 is ejected to a disk insertion slot. It is explanatory drawing for demonstrating the conditions for avoiding dropping out of the housing | casing of a disk reliably.

According to the first aspect of the present invention, a slot-in is provided that includes a disk transport mechanism capable of carrying a disk inserted from a disk insertion slot into the casing and discharging the disk loaded into the casing to the disk insertion slot. A disk device of the type,
The disc transport mechanism carries in or ejects the disc by rotationally driving one of the pair of rollers in a state where the peripheral portion of the disc is held by a pair of rollers arranged on both the left and right sides of the disc. Configured as
The disk device further includes:
When the disk is ejected to the disk insertion port and rotation of one of the pair of rollers is stopped, the disk contacts the peripheral edge of the disk at a position closer to the disk insertion port than the other of the pair of rollers, Provided is a disk device including a disk brake that clamps the disk in cooperation with one of a pair of rollers.

  According to the second aspect of the present invention, when the disc is ejected to the disc insertion opening and the rotational drive of one of the pair of rollers is stopped, the disc brake has a center hole on the outer side of the housing. The disk device according to the first aspect is provided, wherein the disk is held so as to be positioned at a position.

According to a third aspect of the present invention, the disc brake is
A brake member movable to a standby position on the disk insertion opening side and on the disk conveyance path than the other of the pair of rollers;
An elastic member that elastically holds the brake member at the standby position;
With
When the disc is ejected to the disc insertion slot, the brake member is pushed by the disc and resists the elastic force of the elastic member to move away from the standby position, and one of the pair of rollers is driven to rotate. When stopped, the disk contacts the peripheral edge of the disk at a position closer to the disk insertion port than the other of the pair of rollers, and clamps the disk in cooperation with one of the pair of rollers. A disk device according to an aspect is provided.

According to a fourth aspect of the present invention, the brake member includes a rotation shaft, an arm portion rotatable about the rotation shaft, and a peripheral portion of the disk provided at a distal end portion of the arm portion. A contact portion that contacts,
The disk drive according to the third aspect, wherein the elastic member elastically holds the arm unit such that the contact unit is positioned at a contactable position on a conveyance path of the disk.

  According to the fifth aspect of the present invention, when the disk is inserted into the housing, the arm portion is pushed about the rotation axis against the elastic force of the elastic member. When the contact state between the peripheral edge of the disk and the contact portion is released, the disk returns to the contactable position by the elastic force of the elastic member, and the disk is transported by the disk transport mechanism. The disk device according to the fourth aspect, wherein when being ejected to the insertion port, the disk device is pushed by the disk and rotates in the reverse direction around the rotation shaft against the elastic force of the elastic member.

According to the sixth aspect of the present invention, the other of the pair of rollers is provided to be rotatable about a rotation axis,
The disc device according to the fifth aspect is provided, in which the pivot shaft of the brake member and the other pivot shaft of the pair of rollers are integrally formed.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In all of the following drawings, the same or corresponding parts are denoted by the same reference numerals, and redundant description is omitted.

<Embodiment>
The configuration of the disk device according to the embodiment of the present invention will be described below. FIG. 1 is an external perspective view showing a disk device and a disk according to the present embodiment. FIG. 2 is an exploded perspective view of the disk device of FIG. FIG. 3 is a top view showing an attachment state of each component attached to the mechanical chassis included in the disk device of FIG. Here, for the sake of convenience, the upper side of FIG. 1 is described as the upper side of the present disk device, and the lower side of FIG. 1 is described as the lower side of the present disk device, but the present invention is not limited to this. For example, the present disk device may be disposed at an angle of 90 °. Since the disc brake 50 (see FIG. 4) will be described in detail later, the illustration is omitted in FIG.

  In FIG. 1, the present disk device is a slot-in type device configured to carry a disk 100 to a reproducible position in a housing 200 without using a tray. The disk device includes an upper cover 1 and a lower cover 2 that constitute a casing 200 that is an outer shell of the device. A disc insertion slot 1 a is provided on the front surface of the upper cover 1. The disc insertion slot 1a is closed by a dustproof cover 3. The dust cover 3 includes an elastic sheet 3a such as felt. A slit 3b through which the disk 100 can pass is formed in a substantially central part (a position facing the disk insertion slot 1a) of the elastic sheet 3a. When the tip of the disk 100 is inserted into the housing 200 through the slit 3b and the disk insertion slot 1a while elastically deforming the dust cover 3, a disk transport mechanism (described later) disposed in the housing 200 is driven, The disc 100 is transported to the reproducible position. Here, the disc 100 is, for example, a disc having a standard diameter of 12 cm.

  An upper guide 4 that guides the upper side of the disk 100 and a roller base 5 that guides the lower side of the disk 100 with a guide portion 5a are provided in the vicinity of the disk insertion slot 1a in the housing 200. The roller base 5 rotatably holds a pair of roller arms 7a and 7b that function as a guide and a driving force transmission unit that conveys the disk 100 into the housing 200 (see FIG. 7). Drive rollers 6a and 6b are rotatably provided on the roller arm 7a. Guide rollers 6c and 6d are fixed to the roller arm 7b. The drive roller 6a is provided integrally with the roller gear 6e (see FIG. 2). The drive roller 6b is provided integrally with the roller gear 6f.

  The roller arm 7a is provided with a gear train 8 composed of gears 8a to 8c (see FIG. 7). The gear 8c meshes with the gear 10a in the gear train 10 including the gears 10a to 10e shown in FIG. The gear 10e meshes with a worm gear 9a included in a motor 9 that is an example of a drive source. Accordingly, the driving force of the motor 9 is transmitted to the gear train 8 via the worm gear 9a and the gears 10e-10d-10c-10b and the gear 10a of the gear train 10.

  Further, since the gear 10f meshes with the lower gear of the gear 10d, the driving force is transmitted at the same time, and the pinion 10g is integrally formed coaxially with the gear 10f. The pinion 10g is configured to be able to mesh with a rack 30 provided on a slide cam member 16 described later. However, the pinion 10g is not meshed with the rack 30 in an initial state where the disk 100 is not inserted.

  The gear 10c is pivotally supported by the clutch plate 11 so as to be rotatable. The clutch plate 11 is provided so as to be rotatable about a vertical direction (also referred to as a thickness direction) as a rotation axis. The rotation of the clutch plate 11 is performed by sliding the slide cam member 16 in the arrow A2 direction, as will be described later. As the clutch plate 11 rotates, the gear 10c moves to disengage the gear 10b. Thereby, the driving force of the motor 9 is transmitted only to the gear 10f and the coaxial pinion 10g. The roller base 5, the gear train 8, the motor 9, and the gear train 10 are held by a mechanical chassis 12 disposed in the housing 200 so as to be rotatable or slidable as necessary.

  As shown in FIG. 2, a turntable 13 on which the disk 100 is placed and a traverse 15 having an optical pickup 14 are disposed inside the housing 200. The turntable 13 is configured integrally with a spindle motor (not shown) that generates a rotational force that rotates the disk 100. The traverse 15 is configured to be pivotable in the vertical direction and is floatingly supported by the mechanical chassis 12 with a certain elasticity. By turning the traverse 15, the disc 100 transported to the reproducible position can be mounted on the turntable 13.

  As shown in FIG. 3, a slide cam member 16 is provided on the right side of the mechanical chassis 12 so as to be slidable in the arrow A1 or A2 direction. On the left side of the mechanical chassis 12, a slide cam member 18 is provided so as to be slidable in the arrow A1 or A2 direction. The slide cam member 16 and the slide cam member 18 are connected to a lower portion of the mechanical chassis 12 by a link arm 17 (see FIG. 2) rotatably supported. It is configured to slide.

  The mechanical chassis 12 is provided with an intermediate chassis 19 that supports the traverse 15 so as to be rotatable by being pivotally supported by pins 19a and 19b. The intermediate chassis 19 is provided with pins 19c and 19d that engage with the lift cams 16a and 18a (see FIG. 2) formed on the slide cam members 16 and 18, respectively. When the slide cam members 16 and 18 slide in opposite directions, the pins 19c and 19d move up and down by moving along the lift cams 16a and 18a, and the intermediate chassis 19 moves the pins 19a and 19b around the pivot shaft. Rotate as

  The front part of the traverse 15 (the disk insertion slot 1a side) is fixed to the front part of the intermediate chassis 19 at one place on each of the left and right sides via floating rubbers 20a and 20b. The rear portion of the traverse 15 is floatingly supported by the mechanical chassis 12 via floating rubbers 20c and 20d. When the intermediate chassis 19 rotates about the pins 19a and 19b as the rotation axis, the traverse 15 rotates about the floating rubbers 20d and 20c as the rotation axis. As the traverse 15 rotates, the turntable 13 moves up and down.

  An upper base 22 is disposed above the turntable 13 so as to cover the upper part of the traverse 15. An opening 22 a is provided at a position facing the turntable 13 of the upper base 22. The upper base 22 is provided with a pair of clamper lifters 23a and 23b that are opposed to each other with the opening 22a interposed therebetween so as to be slidable in a direction toward or away from each other. A clamper 21 for clamping the disk 100 onto the turntable 13 is provided above the turntable 13.

  The clamper 21 is supported by the respective end portions of the clamper lifters 23a and 23b when the pair of clamper lifters 23a and 23b are positioned close to each other. At this time, the clamper 21 is not in contact with the disk 100 placed on the turntable 13. When the pair of clamper lifters 23a, 23b is moved away from this state, the clamper 21 moves so as to approach the turntable 13 through the opening 22a.

  The clamper 21 is provided with an iron yoke 21a. In a state where the disk is placed on the turntable 13, the iron yoke 21 a is pulled by a magnet provided on the turntable 13 by a magnetic force, whereby the disk 100 is sandwiched between the clamper 21 and the turntable 13. As a result, the disc 100 is mounted on the turntable 13 and a reproducible clamped state is obtained. Further, when the pair of clamper lifters 23a and 23b are moved in a direction approaching each other from the clamped state, the clamper 21 pressed against the pair of clamper lifters 23a and 23b by the movement is separated from the turntable 13 against the magnetic force. To move. As a result, the clamped state is released.

  On the lower surface of the upper base 22, a centering member 24 for performing centering so that the disk 100 is directed to the reproducible position is slidably provided. Further, on the lower surface of the upper base 22, a trigger lever 25, which is an example of a trigger member that rotates by contacting and pressing a disk conveyed to a reproducible position, is rotatably provided. . A guide lever 26 for stably holding the disc 100 inserted in the housing 200 between the turntable 13 and the clamper 21 is rotatably provided on the lower surface of the upper base 22. Yes. The upper base 22 is fixed to the mechanical chassis 12. The mechanical chassis 12 is sandwiched and fixed between the upper cover 1 and the lower cover 2.

  In addition, a substrate 27 on which detection switches 27a to 27c are mounted is attached to the mechanical chassis 12 (see FIG. 3). The detection switch 27a is a switch for detecting the disc 100 inserted through the disc insertion slot 1a. As shown in FIG. 7, the detection switch 27a is operated by a disk detection lever 29 provided on the roller arm 7b. The detection switch 27b is a switch that detects the end of loading when the disc 100 is ejected. The detection switch 27b is operated by the lower surface of the roller arm 7b that rotates when the disk 100 is inserted and ejected. The detection switch 27c is a switch that detects that the disk 100 has been transported to the reproducible position and has been mounted. The detection switch 27 c is operated by the slide cam member 18. The substrate 27 is provided at a position facing the roller arm 7 b attached to the roller base 5.

  Further, as shown in FIGS. 7, 8A, and 8B, link arms 28a and 28b are rotatably provided on the roller base 5. The link arms 28a and 28b are configured to engage with the roller arms 7a and 7b and rotate the roller arms 7a and 7b in synchronization with each other. The roller arm 7a is provided so as to be rotatable in the directions of arrows A5 and A7 about the rotation shaft 7a-1. The roller arm 7a is urged in the direction of arrow A7 by a torsion coil spring 7a-2. The roller arm 7b is provided so as to be rotatable in the directions of arrows A6 and A8 about the rotation shaft 7b-1. The roller arm 7b is urged in the direction of arrow A8 by a torsion coil spring 7a-2.

  In the first embodiment, the gear train 10, the gear train 8, the drive rollers 6a and 6b, the guide rollers 6c and 6d, the roller gears 6e and 6f, the roller arms 7a and 7b, and the link arms 28a and 28b A disk transport mechanism for transporting 100 to a reproducible position is configured.

  Next, the configuration of the disk device will be described in more detail with reference to FIG. FIG. 3 shows the overall configuration shown in FIG. 2, except that the parts except the parts related to the upper cover 1, the lower cover 2, the roller base 5, and the parts related to the upper base 22 are attached to the mechanical chassis 12. It is a top view which shows the state.

  As shown in FIG. 3, the turntable 13 and the optical pickup 14 are disposed on the traverse 15 in the approximate center of the disk device. A substantially U-shaped intermediate chassis 19 is disposed so as to surround the front and both sides of the traverse 15. A slide cam member 16 is disposed on the right side of the intermediate chassis 19. A slide cam member 18 is disposed on the left side of the intermediate chassis 19. The slide cam member 16 and the slide cam member 18 are slidably arranged in the front-rear direction (arrow A1 and A2 directions) that is the same as the disk transport direction. In an initial state where the disc 100 is not conveyed, the slide cam member 16 is urged in the direction of the arrow A1 by a spring 16b stretched between the mechanical chassis 12 and the slide cam member 16. The slide cam member 18 connected to the slide cam member 16 via the link arm 17 is urged in the arrow A2 direction. Pins 19c and 19d provided at both ends of the front portion of the intermediate chassis 19 are slidably engaged with elevating cams 16a and 18a (see FIG. 2) formed on the slide cam members 16 and 18, respectively. Pins 19 a and 19 b provided at both ends of the rear portion of the intermediate chassis 19 are rotatably held by bearing portions 12 a and 12 b formed on the mechanical chassis 12. With this configuration, the intermediate chassis 19 is rotated about the pins 19a and 19b as the slide cam members 16 and 18 slide in opposite directions, and the front portion of the intermediate chassis 19 is raised and lowered.

  Here, sliding of the slide cam members 16 and 18 in opposite directions is such that the driving force of the motor 9 is such that the worm gear 9a and the gears 10e and 10d are driven with the rack 30 of the slide cam member 16 and the pinion 10g engaged with each other. , 10f to the pinion 10g. The pinion 10g is pressed by the disc 100 conveyed to the reproducible position on the turntable 13, and the trigger lever 25 is rotated. The pinion 10g is pressed by the trigger lever 25 and the slide cam member 16 is slightly slid in the arrow A2 direction. By doing so, it meshes with the rack 30.

  That is, when the disk 100 is transported to the reproducible position by driving the motor 9, the slide cam members 16, 18 slide in the opposite directions by the action of the trigger lever 25 and the transmission switching of the driving force of the motor 9. . As a result, the intermediate chassis 19 and the traverse 15 are raised, the disk 100 is mounted on the turntable 13, and the disk 100 is in a clamped state where the disk 100 can be reproduced.

  Next, the configuration of the disc brake 50 will be described with reference to FIGS. 4 to 6 are top views showing the disk loading operation.

  The disc brake 50 includes a brake member 51 and a torsion coil spring 52 that is an example of an elastic member. The brake member 51 includes a rotation shaft 53, an arm portion 54 that can rotate around the rotation shaft 53, and a contact portion 55 that is provided at the distal end portion of the arm portion 54 and contacts the peripheral edge of the disk 100. ing. For example, the rotation shaft 53 is configured integrally with the rotation shaft 7b-1 of the roller arm 7b.

  The brake member 51 is configured to be movable to a standby position 50 </ b> A shown in FIG. 6 by rotating around the rotation shaft 53. The standby position 50A is closer to the disc insertion slot 1a than the guide rollers 6c and 6d (on the downstream side in the disc discharge direction A2) and on the transport path of the disc 100.

  The arm portion 54 is formed of, for example, a rod-like member that is partially curved so as not to contact the guide roller 6d. The contact portion 55 is made of a material that does not damage the disk 100, for example, rubber. The torsion coil spring 52 elastically holds the brake member 51 at the standby position 50A. Specifically, the torsion coil spring 52 elastically holds the arm portion 54 so that the contact portion 55 is located at a contactable position 55A on the transport path of the disk 100.

  Next, using FIG. 4 to FIG. 8B, a transport operation of the disk 100 that transports the disk 100 inserted into the housing 200 to a reproducible position will be described. FIG. 7 is a top view showing an attachment state of the pair of roller arms 7a and 7b and the pair of link arms 28a and 28b. 8A and 8B are bottom views showing a state in which the pair of roller arms 7a and 7b are rotated in a direction toward or away from each other.

  The disc 100 inserted into the housing 200 through the disc insertion opening 1a first comes into contact with the contact portion 55 of the brake member 51 located at the standby position 50A. When the disk 100 is further inserted into the housing 200 from this state, the arm portion 54 of the brake member 51 is pushed by the disk 100 and resists the elastic force of the torsion coil spring 52, and the arrow about the rotation shaft 53 is the center. It rotates in the A6 direction (forward direction).

  Thereafter, when the disc 100 is further inserted into the housing 200, the disc 100 comes into contact with the drive rollers 6a and 6b, the guide rollers 6c and 6d, and the contact portion 55. At this time, the disk detection lever 29 provided on the roller arm 7b is pressed by the disk 100 and rotates, and the detection switch 27a is activated. Thereby, it is detected that the disc 100 is inserted through the disc insertion slot 1a. When the detection switch 27a is activated, the motor 9 starts to drive.

  The driving force of the motor 9 is transmitted to the driving rollers 6 a and 6 b via the gear train 10 and the gear train 8. As a result, the driving rollers 6a and 6b rotate in the direction of the arrow A3, and the rotational driving force and frictional force of the driving roller 6b and the frictional force of the non-rotating guide roller 6d facing the driving roller 6b and the disk 100 are sandwiched. The disk 100 rotates in the direction of arrow A4 about the guide roller 6d (more specifically, the contact point with the disk 100) as the rotation center. The disc 100 is conveyed in the direction of the arrow A1 by the rotation in the direction of the arrow A4.

  When the disk 100 is further conveyed in the arrow A1 direction from the state shown in FIG. 4, the space between the drive roller 6b and the guide roller 6d is expanded by the disk 100. As a result, the roller arm 7a rotates in the direction of arrow A5 and the roller arm 7b rotates in the direction of arrow A6 against the urging force of the torsion coil springs 7a-2 and 7b-2 described in FIGS. 8A and 8B. To do. That is, the pair of roller arms 7a and 7b rotate in a direction away from each other (opening direction). The drive rollers 6a and 6c are once separated from the peripheral edge of the disk 100 by the rotation of the roller arms 7a and 7b.

  Thereafter, when the disk 100 is further conveyed in the direction of the arrow A1 and the central portion of the disk 100, which is the maximum left and right diameter of the disk 100, passes between the drive roller 6b and the guide roller 6d, the torsion coil spring 7a described in FIGS. 8A and 8B. The roller arm 7a is rotated in the direction of arrow A7 and the roller arm 7b is rotated in the direction of arrow A8 by the urging forces of -2 and 7b-2. That is, the pair of roller arms 7a and 7b rotate in a direction (close direction) approaching each other. As a result, the driving roller 6a and the guide roller 6c come into contact with the peripheral edge of the disk 100 again, and the state shown in FIG. 5 is obtained. At this time, the brake member 51 is moved to the retracted position 50B. The disk position 100B shown in FIG. 5 is a position where the turning force of the disk 100 is switched so as to be transmitted from the driving roller 6a and the guide roller 6c instead of being transmitted from the driving roller 6b and the guide roller 6d.

  When the drive roller 6a is rotationally driven in the direction of arrow A3 in the state shown in FIG. 5, the disk 100 rotates in the direction of arrow A4 with the guide roller 6c as the center of rotation. The disc 100 is further conveyed in the direction of the arrow A1 by the rotation in the direction of the arrow A4 with the guide roller 6c as the center of rotation.

  When the disc 100 is further conveyed in the direction of the arrow A1 and the contact state between the peripheral portion of the disc 100 and the contact portion 55 is released, the arm portion 53 is centered on the rotation shaft 53 by the elastic force of the torsion coil spring 52. It rotates in the direction of arrow A8 (reverse direction). Thereby, the contact part 55 returns to the contactable position 55A.

  Further, when the disc 100 is further conveyed in the direction of the arrow A1, the disc 100 is conveyed to a disc position 100C which is a reproducible position shown in FIG. At this position, the disc 100 is transported. By detecting the end of the transport operation, a mounting operation for clamping the disc 100 onto the turntable 13 is performed. Thereafter, when the detection switch 27c detects that the mounting operation has been completed, the motor 9 stops driving, and the mounting operation of the disk 100 is completed. Details of the mounting operation of the disk 100 are omitted.

  Next, the disc 100 ejection operation for ejecting the disc 100 from the playable position to the disc insertion slot 1a will be described with reference to FIGS. 9 to 12 are top views showing the disc ejection operation. Here, it is assumed that the disk 100 is located at the disk position 100C shown in FIG. 9, is released from the clamped state, and is sandwiched between the drive roller 6a and the guide roller 6c. Further, it is assumed that the motor 9 has already been reversely driven to release the clamped state, and the driving rollers 6a and 6b are rotating in the direction of arrow A10, which is the reverse direction to the disk 100 loading operation.

  In the state shown in FIG. 9, when the drive roller 6a rotates in the direction of arrow A10, the disk 100 rotates in the arrow A9 with the guide roller 6c as the rotation center. The disc 100 is transported in the direction of the arrow A2 by the rotation in the arrow A9.

  Due to the conveyance in the direction of the arrow A2, the disc 100 comes into contact with the contact portion 55 of the brake member 51 located at the standby position 50A. When the disc 100 is further conveyed in the direction of the arrow A2 from this state, the arm portion 53 of the brake member 51 is pushed by the disc 100 and resists the elastic force of the torsion coil spring 52, and the arrow A8 is centered on the rotation shaft 53. Rotate in the direction (reverse direction). That is, the brake member 51 is separated from the standby position 50A.

  Thereafter, when the disk 100 is further conveyed in the direction of the arrow A2 and reaches the disk position 100B shown in FIG. 9, the rotational force of the disk 100 is transmitted from the drive roller 6a and the guide roller 6c, instead of being transmitted. It is switched so as to be transmitted from the roller 6d. As a result, the disk 100 rotates in the direction of arrow A9 with the guide roller 6d as the rotation center. By the rotation of the arrow A9, the disc 100 is further conveyed to the arrow A2.

  When the detection switch 27b detects that the disk 100 has been conveyed to the disk position 100A shown in FIG. 11 by the conveyance of the arrow A2, the motor 9 stops driving. As a result, the rotation of the driving rollers 6a and 6b in the direction of arrow A10 is stopped, but since the inertial force acts on the disk 100 in the direction of arrow A2, the disk 100 further moves in the direction of arrow A2. Due to this movement, the disc 100 is separated from the drive roller 6a and the guide rollers 6c and 6d, and is sandwiched between the drive roller 6b and the contact portion 55 of the disc brake 50, as shown in FIG. At this time, the contact part 55 contacts the peripheral edge of the disk 100 at a position closer to the disk insertion slot 1a than the drive roller 6b (on the downstream side in the disk discharge direction A2), and cooperates with the drive roller 6b to move the disk 100. Hold it. Thereby, the disc 100 ejection operation is completed.

  Note that the disc brake 50 is preferably provided so as to hold the disc 100 so that the center hole of the disc 100 is located outside the housing 200 when the disc 100 is ejected as shown in FIG. Thus, the user can easily hold the disc 100 by inserting a finger into the center hole of the disc 100. Therefore, user convenience can be improved.

  Next, conditions for reliably avoiding the disk 100 falling out of the housing 200 will be described with reference to FIG.

In FIG. 13, N ₁ indicates the pressing force toward the center of the disk 100 due to the elastic force of the disk brake 50. N ₂ indicates a reaction force acting on the driving roller 6b by the pressing force N ₁ . μ represents a friction coefficient. μN ₁ indicates the frictional force of the disc brake 50 against the disc 100. μN ₂ indicates the frictional force of the driving roller 6b against the disk 100.

Y direction: N _1y + μN _1y = N _2y + μN _2y (1)
_{X-direction: N1 x + N 2x ≦ μ} (N 1x + N 2x) ··· (2)

  By adjusting the elastic force and contact position of the disc brake 50 so as to satisfy the relational expressions (1) and (2), the disc 100 can be reliably prevented from falling out of the housing 200.

  According to the disk device according to the present embodiment, by providing the disk brake 50, it is possible to increase the amount of protrusion of the disk 100 when the disk is ejected and to prevent the disk 100 from being damaged.

  In addition, this invention is not limited to the said embodiment, It can implement in another various aspect. For example, in the above description, the rotation shaft 53 of the disc brake 50 is integrally formed with the rotation shaft 7b-1 of the roller arm 7b, but the present invention is not limited to this. The rotation shaft 53 of the disc brake 50 may be provided separately (different position) from the rotation shaft 7b-1 of the roller arm 7b.

  In the above description, the disc brake 50 is configured such that the brake member 51 rotates about the rotation shaft 53, but the present invention is not limited to this. When the disc 100 ejection operation is completed, the disc brake 50 contacts the peripheral edge of the disc 100 at a position closer to the disc insertion slot 1a than the drive roller 6d, and clamps the disc 100 in cooperation with the drive roller 6a. What is necessary is just to be provided. For example, the disc brake 50 may be configured so that the brake member 51 slides with respect to the disc 100.

  In the above description, the drive roller 6a and the guide roller 6c and the drive roller 6b and the guide roller 6d are provided on the left and right sides of the disk 100. However, the present invention is not limited to this. The disc 100 may be transported or ejected by only a pair of the driving roller 6b and the guide roller 6d.

  The disc device according to the present invention is particularly useful for disc recorders that are sensitive to disc damage, because the amount of pop-out of the disc when the disc is ejected can be increased and the disc can be prevented from being damaged.

DESCRIPTION OF SYMBOLS 1 Upper cover 2 Lower cover 3 Dust-proof cover 4 Upper guide 5 Roller base 6a, 6b Drive roller 6c, 6d Guide roller 6e, 6f Roller gear 7a, 7b Roller arm 8a-8c Gear 9 Motor 10a-10f Gear 10g Pinion (drive gear)
11 Clutch plate 12 Mechanical chassis 13 Turntable 13c Magnet 15 Traverse 16, 18 Slide cam member 16a, 18a Lifting cam 16b Spring 17 Link arm 19 Intermediate chassis 21 Clamper 21a Yoke 22 Upper base (chassis)
22a opening 23a, 23b clamper lifter 24 centering member 25 trigger lever 26 guide lever 27 substrate 27a-27c detection switch 28a, 28b link arm 29 disc detection lever 30 rack 50 disc brake 51 brake member 52 torsion coil spring (elastic member)
53 Rotating shaft 54 Arm portion 55 Contact portion 100 Disk 200 Case

Claims (6)

A slot-in type disk device comprising a disk transport mechanism capable of loading a disk inserted from a disk insertion slot into a casing and discharging the disk loaded into the casing to the disk insertion slot,
The disk transport mechanism carries in or ejects the disk by rotationally driving one of the pair of rollers in a state where the peripheral edge of the disk is sandwiched between a pair of rollers disposed on both the left and right sides of the disk. Configured as
The disk device further includes:
When the disk is ejected to the disk insertion port and rotation of one of the pair of rollers is stopped, the disk contacts the peripheral edge of the disk at a position closer to the disk insertion port than the other of the pair of rollers, A disk device comprising a disk brake that clamps the disk in cooperation with one of a pair of rollers.   The disc brake holds the disc so that the center hole of the disc is located outside the housing when the disc is ejected to the disc insertion slot and rotation of one of the pair of rollers is stopped. The disk device according to claim 1. The disc brake is
A brake member movable to a standby position on the disk insertion opening side and on the disk conveyance path than the other of the pair of rollers;
An elastic member that elastically holds the brake member at the standby position;
With
When the disc is ejected to the disc insertion slot, the brake member is pushed by the disc and resists the elastic force of the elastic member to move away from the standby position, and one of the pair of rollers is driven to rotate. 2. When stopped, the disk contacts the peripheral edge of the disk at a position closer to the disk insertion port than the other of the pair of rollers, and clamps the disk in cooperation with one of the pair of rollers. 2. The disk device according to 2. The brake member includes a rotation shaft, an arm portion that is rotatable about the rotation shaft, and a contact portion that is provided at a tip portion of the arm portion and contacts a peripheral edge portion of the disk.
The disk device according to claim 3, wherein the elastic member elastically holds the arm part so that the contact part is positioned at a contactable position on a conveyance path of the disk.   When the disk is inserted into the housing, the arm portion is pushed by the disk and rotates in the forward direction around the rotation axis against the elastic force of the elastic member, and the peripheral edge of the disk When the contact state between the part and the contact part is released, the disk returns to the contactable position by the elastic force of the elastic member, and the disk is ejected to the disk insertion port by the disk transport mechanism. 5. The disk device according to claim 4, wherein the disk device rotates in a reverse direction about the rotation shaft against the elastic force of the elastic member when pressed by the elastic member. The other of the pair of rollers is provided to be rotatable about a rotation axis,
The disk device according to claim 5, wherein the rotation shaft of the brake member and the other rotation shaft of the pair of rollers are integrally formed.

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