JP2009037675A - Disk device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a disk device surely fitted into the center hole of a disk, and capable of preventing the application of loads on the disk when a turntable is separated from a clamper. <P>SOLUTION: The disk device is provided with a turntable 4, a clamper 12, and a tray 9 for vertically holding a disk 16 or 18. The turntable 4 has a fitting hole 4d formed in a fitting par 4b, and a magnet 4e disposed in the fitting part 4b. The clamper 12 has a clamping part 12a provided with a recessed part 12k for fitting the fitting part 4b, provided on one end side facing the fitting part 4b, a positioning shaft 12j projected from the center of the recessed part 12k to fit in the fitting hole 4d, a yoke 12c bonded to the other end side of the clamping part 12a, and a pressing member 12e pressed to abut on the yoke 12c and provided with a projected part 12g projected from a plurality of holes 12h disposed in the peripheral edge of the clamping part 12a to the disk 16 or 18. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a disk device for holding disc-shaped recording media having different diameters.

  2. Description of the Related Art Conventionally, in a disk device, a disk such as an optical disk and a magnetic disk inserted substantially horizontally on a turntable is rotated by a spindle motor, and a pickup moves in a radial direction with respect to the disk to record and reproduce information.

There are discs of various sizes, and a disc having a diameter of 8 cm (hereinafter referred to as “small-diameter disc”) may be used, but a disc having a diameter of 12 cm (hereinafter referred to as “large-diameter disc”) is usually used. Is often used.
Corresponding to such a disc, a dual-type disc device capable of driving discs having different diameters is used. Further, in recent disk devices, a device in which the disk is held vertically on a tray to reduce the occupied space is provided (see, for example, Patent Document 1).

As this type of disk device, there has been proposed a disk transport device that can transport a disk in a vertical orientation and hold it on a turntable (Patent Document 2).
In the example shown in Patent Document 2, a tray for transferring a disk in a vertical orientation is formed by a concave large-diameter disk holding portion and a concave small-diameter formed concentrically on the large-diameter disk holding portion and provided with a step by a predetermined amount. And a disk holding portion. The small-diameter or large-diameter disk holding portion is in contact with the outer peripheral edge and the peripheral edge of one side of the small-diameter or large-diameter disk, respectively, and holds the disk vertically. A claw portion capable of locking the lower outer peripheral edge of each of the small-diameter disk and the large-diameter disk is formed on the clamper side at the lower periphery of each of the small-diameter disk holding section and the large-diameter disk holding section. A clamper in which a magnet is embedded is disposed opposite to a turntable provided with a magnetic body.
The turntable has a truncated cone in the center, and after the tray moves the disk between the turntable and the clamper, the turntable moves from the standby position to the recording / reproducing position for recording / reproducing information on the disk. The turntable frustoconical part fits into the center hole drilled in the center of the disc and lifts the disc upward, and as the turntable moves to the clamper side, the outer peripheral edge on the lower side of the disc The turntable supports the disk in a vertical direction over the claw of the tray. The clamper and the turntable sandwich the disc by magnetic force, and the disc is rotated and recorded and reproduced by a pickup.
JP 2002-245701 A JP 2003-257112 A

However, in the case of the clamper mechanism disclosed in Patent Document 2, when the truncated cone portion of the turntable is fitted into the center hole of the disc, the turntable is caused by magnetic force before completely fitting into the center hole of the disc. There is a possibility that the position of the center hole is decentered due to the disk being swayed in the radial direction, and the truncated cone part is clamped by the clamper. When the disc is clamped in an eccentric state, the turntable cannot rotate the disc, and even when it can be rotated, the disc surface shake may be extremely large, and information recording / reproduction may be difficult. .
Also, when unloading, when the turntable is detached from the clamper against the magnet's attractive force, the outer peripheral edge of one side of the disk comes into contact with and holds the small or large diameter disk holding part of the tray. Therefore, a load is applied to the joint surface between the tray and the disc, and the disc may be deformed.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a pressing member that presses a disc held vertically or horizontally on a turntable by providing a clamper with a pressing member. To provide a disc device in which the fitting portion of the turntable can be securely inserted into the center hole of the disc while the body presses the disc, and no load is applied to the disc when the turntable is detached from the clamper. is there.

  The disc device of the present invention has a fitting portion that fits and protrudes into a central hole formed at the center of the disc, and moves from a standby position to a recording / reproducing position for recording / reproducing information on the disc. A magnet that includes a table, a tray that faces the turntable, and holds a disk; and a clamper that has a recess into which the fitting portion is inserted and moves while holding the disk between the turntable and the magnet. Is disposed on either the turntable or the clamper, and in the disk device in which the clamper is attracted to the turntable by a magnetic force, the clamper has a ring-shaped pressing body biased toward the turntable. It is provided concentrically with the recess, and a plurality of protrusions protruding toward the turntable are provided on the outer peripheral edge of the pressing body.

In the disc apparatus of the present invention having such a configuration, when the tray holds the disc and faces the turntable, and the clamper faces the disc, the protrusion of the ring-shaped pressing body presses the disc in the centered state. .
When the turntable moves from the standby position to the recording / reproducing position of the disc, with the projection pressing the disc toward the turntable, the fitting portion of the turntable is inserted into the center hole of the disc, and the disc The peripheral surface of the central hole on the turntable side contacts the turntable.
Furthermore, when the turntable moves to the clamper side against the urging force that urges the pressing body, and when the fitting portion of the turntable approaches the recess of the clamper while the protrusion presses the disk against the turntable The distance between the turntable and the clamper is reached, and the concave portion of the clamper is fitted to the fitting portion of the turntable by the magnet's attractive force. The clamper moves with the turntable while sandwiching the peripheral surface of the central hole of the disc between the turntable and the turntable reaches the recording / reproducing position of the disc.
Then, the turntable rotates together with the disc and the clamper, and the disc is recorded and reproduced.
After the recording / reproducing of the disc is completed, the turntable stops and the turntable moves from the recording / reproducing position of the disc to the standby position. When the turntable moves to the standby position, the turntable and the clamper move while holding the disk while the protrusion presses the disk against the turntable. The turntable moves toward the standby position against the magnet's attractive force, the turntable is detached from the clamper, and the fitting portion and the recess are disengaged.

  In the disc device according to the present invention, the clamper is formed at an edge of the clamper, and is provided with a plurality of holes for projecting the protrusions, and the opposite side of the turntable. And a fitting column that is inserted into the fitting column, one end of which is pressed against the pressing body, and the other end is engaged with a locking portion that protrudes from a side surface of the tip of the fitting column. And a pressing spring that is stopped.

In the disc apparatus of the present invention having such a configuration, the tray holds the disc and faces the turntable. When the clamper faces the disk, the protrusion of the ring-shaped pressing body protrudes from the hole at the edge of the clamper by the pressing spring, and the disk is divided and pressed to the turntable. When the turntable moves to the clamper side against the biasing force of the push spring, the turntable pushes one end of the push spring that presses against the projection by pushing the projection through the disc, and locks the fitting column. The portion locks the other end of the push spring and the push spring contracts, and the protrusion of the pressing body maintains the state in which the disk is shared and pressed by the turntable.
When the turntable moves to the standby position, the projection of the ring-shaped pressing member divides and presses the disk to the turntable by the urging force of the pressing spring.

  In the disk device according to the present invention, the tray includes a first holding unit in a vertically arranged posture having an opening on the clamper side, and the opening on the turntable side concentrically with the first holding unit. A second holding portion recessed in a hollow cylindrical shape with a small diameter, the second holding portion having a hole facing the turntable, and each inner peripheral surface of the first and second holding portions Each has a first holding groove and a second holding groove for holding the disk in a vertical direction, and the protrusion is extended to the periphery of the second holding groove by the pressing spring pressing the pressing body. It is characterized by protruding.

In the disc apparatus of the present invention having such a configuration, each first or second holding groove of the first or second holding portion holds each large-diameter or small-diameter disk in the vertical direction and faces the turntable, and the clamper When the disk is opposed to the disk, in the small-diameter disk, the protrusion of the pressing body protrudes to the periphery of the second holding groove when the pressing spring presses the pressing body and contacts the small-diameter disk held in the second holding groove. Touch. In the large-diameter disk, the protrusion of the pressing body protrudes to the large-diameter disk held by the first holding groove when the pressing spring presses the pressing body to press the large-diameter disk.
When the turntable moves from the through-hole of the tray to the clamper side, the fitting part of the turntable fits into the center hole of the disc and the disc is fitted with the protrusion pressing the disc toward the turntable. It lifts from the 1st or 2nd holding groove along the taper of a joint part, and hold | maintains itself, and the peripheral surface of the center hole of a disk contact | abuts to a turntable.
Furthermore, when the turntable moves to the clamper side against the urging force that urges the pressing body, and when the fitting portion of the turntable approaches the recess of the clamper while the protrusion presses the disk against the turntable The distance between the turntable and the clamper is reached, and the concave portion of the clamper is fitted into the fitting portion of the turntable by the magnet's attractive force. The peripheral surface of the center hole of the disc is sandwiched between the clamper and the turntable, the turntable moves, and the turntable reaches the recording / reproducing position of the disc.
When the turntable moves to the standby position after the recording / reproducing of the disk is completed, the protrusions press the disk against the turntable, and the turntable and the clamper move while holding the disk. The turntable moves against the magnet's attracting force, the turntable is detached from the clamper, and the fitting between the turntable fitting portion and the concave portion of the clamper is released.

In the case of a small-diameter disc, when the fitting portion and the concave portion are disengaged, the protruding portion maintains the state of pressing the disc against the turntable, the turntable moves, and the peripheral end surface of the disc floats Opposite the second holding groove. When the peripheral end surface of the disk faces the second holding groove, the protruding portion comes into contact with the disk.
In the case of a large-diameter disc, when the fitting portion and the concave portion are disengaged, the projection portion presses the disc against the first short cylindrical holding portion, and when the turntable moves to the standby position, the projection portion Maintains the state in which the disk is pressed against the first holding portion having a short cylindrical shape.

  The disc device of the present invention includes a clamper holder for loosely fitting the clamper, the clamper holder being fitted in the hole formed concentrically with the fitting portion, and having a groove inside. A ring formed on a peripheral surface, the clamper has a disc shape, and a protruding ring having a ring-shaped protrusion concentrically with the clamper is outwardly fitted to the ring. And

In the disc apparatus of the present invention having such a configuration, the fitting portion of the turntable is fitted into the concave portion of the clamper, and the turntable and the clamper clamp the disc by the attractive force of the magnet. The clamper moves in the width direction of the groove of the ring of the clamper holder according to the movement of the turntable, and the turntable reaches the recording / reproducing position of the disc at a position where the clamper holder does not restrain the clamper's protruding ring.
When the turntable moves to the standby position after the recording / playback of the disc is completed, the projections press the disc against the turntable, the turntable and the clamper clamp the disc, and the projection ring of the clamper is the ring of the clamper holder. The groove is moved backward in the width direction. When the bumper ring of the clamper comes to a position where it comes into contact with the inner periphery of the ring groove on the turntable side, the clamper holder locks the clamper to prevent the clamper from moving to the turntable side.
The turntable moves against the magnet's attractive force, the turntable is detached from the clamper, and the fitting portion of the turntable and the concave portion of the clamper are disengaged.

In the disk device of the present invention, when the pressing body that presses the disk held vertically or horizontally on the turntable is inserted into the center hole of the disk when the fitting portion of the turntable is inserted into the center hole of the disk, the disk is turned to the turntable side. Since the pressed state is maintained, there is an effect that the disc does not deviate in the radial direction of the turntable and the fitting portion of the turntable can be surely fitted into the central hole of the disc.
Further, in the disk device of the present invention, when the clamper holder prevents movement when the clamper is detached, the disk can be detached from the clamper without applying a load to the disk when the turntable is detached from the clamper. It has the effect.

Hereinafter, a preferred embodiment of a disk apparatus according to the present invention will be described with reference to the drawings, taking an example of a clamper that vertically places a disk on a turntable and clamps the disk between the turntable.
In the cross-sectional view, some hatching is omitted.
1 is a perspective view of a vertical disk device according to the present embodiment as viewed from the front, FIG. 2 is a partial side sectional view of a clamper mechanism, FIG. 3 is a front view of the clamper, and FIG. It is the perspective view which looked at the state from the front.
The disk device according to the present embodiment has a housing 1 that has a rectangular longitudinal direction when viewed from the front, and is horizontally long for the pickup 6 to move from a substantially central portion of the front of the housing 1 to one side. The rectangular hole 1a is formed. A turntable 4 that holds and rotates a disk 16 having a diameter of 8 cm or a disk 18 having a diameter of 12 cm, for example, in a substantially central portion in the housing 1, has a vertical surface on which the disks 16 and 18 abut, It is provided toward the front side of the housing 1.

A pick-up 6 for recording or reproducing information on, for example, the disk 16 or 18 and held by the turntable 4 and a drive mechanism 8 for driving the pick-up 6 in the radial direction of the disk 16 or 18 include a turntable. 4 is housed in a housing 1 in the vicinity.
The turntable 4 and the pickup 6 are exposed in the rectangular hole 1a, and the area from the vicinity of the turntable 4 to one short side end of the rectangular hole 1a is a moving area of the pickup 6.

Opposite to the turntable 4, a horizontally long rectangular plate-like tray 9 capable of holding the disk 16 or the disk 18 in the vertical direction is arranged in the vertical direction.
A horizontally-long rectangular plate-like clamper holder 14 is provided facing the outside of the tray 9, and serves as a front cover of the housing 1. The clamper holder 14 includes a clamper 12 that clamps the disc 16 or the disc 18 together with the turntable 4 at the center.

The turntable 4, the tray 9, and the clamper 12 that faces the turntable 4 through the tray 9 constitute the vertical clamper mechanism shown in FIG. 2.
The turntable 4 has a cylindrical base 4a, and a rotary shaft 7 of a spindle motor (not shown) is connected to the rear end of the base 4a. A disc 4c having a diameter larger than that of the base 4a is formed concentrically on the rotating shaft 4g formed at the center of the base 4a. A frustoconical fitting portion 4b is formed concentrically at the center of the disk 4c. The fitting portion 4b can be fitted into center holes 16c and 18c formed in the center of the disks 16 and 18.

The fitting portion 4b is formed by integrating a cylindrical base 4f and a truncated cone 4h. The truncated cone 4h is formed with the large diameter side set to the same diameter as the cylindrical base 4f and the small diameter side directed toward the tray 9 side. ing. A circular fitting hole 4d for fitting the positioning shaft 12j of the clamper 12 is formed at the center of the tip of the truncated cone 4h.
The diameter of the column base 4f is substantially the same as the diameter of the central holes 16c and 18c of the disc 16 and the disc 18, respectively, and the height of the column base 4f and the truncated cone 4h is about the thickness of the discs 16 and 18, respectively. It is. The column base 4f is inserted into the central holes 16c and 18c so as to support the disks 16 and 18 in the vertical direction.

  The turntable 4 is made of synthetic resin, and a disc-shaped magnet 4e is embedded concentrically on the small diameter side of the truncated cone 4h.

The tray 9 is formed with a second holding portion 10 and a first holding portion 11 that are concentric with the turntable 4. A through-hole 9b having a diameter slightly larger than the diameter of the disk 4c of the turntable 4 is formed concentrically and semicircularly at the center of the second holding part 10, in other words, at the center of the tray 9. A horizontally-long rectangular through-hole 9c having a peripheral edge facing the peripheral edge of the rectangular hole 1a of the housing 1 is provided in a lateral direction from the through-hole 9b.
The pickup 6 faces the recording surface of the disk 16 or the disk 18 held on the tray 9 through the through-hole 9c, and the turntable 4 moves from the standby position of the turntable 4 to the through-hole 9b in the front-rear direction. The discs 16 and 18 can be moved to the recording / reproducing position.

  At the center of the tray 9, a second holding part 10 composed of a vertically short cylindrical recess 10 a slightly larger than a diameter of 8 cm is located on the turntable 4 side, with the second opening 10 b on the front side. Is formed. The through hole 9b is formed by cutting out one side of the recess 10a from the approximate center of the recess 10a, and the disk contact surface 10e whose front side of the peripheral surface of the through hole 9b in the recess 10a is slightly larger than 8 cm in diameter. It has become.

A first holding part 11 composed of a short cylindrical concave part 11a with a slightly larger diameter than 12 cm in diameter is formed concentrically with the second holding part 10 on the outer periphery of the second opening part 10b.
The peripheral surface of the second opening 10b is a disk contact surface 11e that is slightly larger than 12 cm in diameter.
The depths of the recess 10a and the recess 11a are about three times the thickness of the disks 16 and 18 to be supported, respectively.

  A V-shaped groove 10 c is provided around the inner peripheral surface of the recess 10 a of the second holding unit 10. A U-shaped second holding groove 10d having a width substantially the same as the thickness of the disk 16 is provided around the deepest portion of the groove 10c in order to hold the disk 16 vertically.

A V-shaped groove 11c is provided around the inner peripheral surface of the concave portion 11a of the first holding part 11, and the thickness of the disk 18 is used to hold the disk 18 vertically in the deepest part of the groove 11c. A U-shaped first holding groove 11d having a width substantially the same as that of the first holding groove 11d is provided.
In addition, the code | symbol 11b in FIG.

The clamper 12 that clamps the disc 16 or the disc 18 with the turntable 4 has a vertically-oriented disc-shaped clamp portion 12a, and a cylindrical base shaft that is a fitting column at the center of the front surface of the clamp portion 12a. 12b protrudes.
On the rear surface of the clamp portion 12a, a divergent truncated conical recess 12k into which the fitting portion 4b of the turntable 4 can be fitted is formed. The depth of the recess 12k is set to about the thickness of the disks 16 and 18. At the center of the recess 12k, a columnar positioning shaft 12j for positioning the turntable 4 and for aligning the rotation shaft is provided concentrically with the base shaft 12b. The tip of the positioning shaft 12j is slightly lower than the periphery of the recess 12k, and the diameter of the positioning shaft 12j and the diameter of the base shaft 12b are approximately the same.

A ring-shaped yoke 12c fitted to the base shaft 12b is attached to the front surface of the clamp portion 12a. A ring-shaped pressing body 12e capable of loosely fitting on the base shaft 12b and abutting against the yoke 12c is provided on the front side of the clamp portion 12a. The yoke 12c is usually a soft iron plate, but any material can be used as long as it is attracted to the magnet 4e.
Setting is made so that the magnet 4e and the yoke 12c are attracted when the fitting portion 4b in which the magnet 4e is embedded approaches the distance of the thickness of the disks 16 and 18 from the periphery of the recess 12k by the movement of the turntable 4. Has been. When the positioning shaft 12j is fitted into the fitting hole 4d of the fitting portion 4b of the turntable 4, the fitting portion 4b is fitted into the recess 12k.

The base shaft 12b is inserted into the push spring 12d, and the front end portion of the base shaft 12b is a hook-shaped convex portion 12f that is a locking portion protruding from the side surface. One end of the pressing spring 12d is in pressure contact with the pressing body 12e, and the other end is locked to the convex portion 12f. The pressing body 12e is urged by a pressing spring 12d toward the rear side of the clamper 12, that is, toward the turntable 4.
Three protrusions 12g, 12g, and 12g are provided on the rear side of the pressing body 12e at three equal positions. The three protrusions 12g are provided on the periphery of the clamp part 12a. The holes 12h, 12h and 12h protrude toward the rear turntable 4 of the clamp portion 12a.

  When the pressing body 12e is in contact with the yoke 12c, the protrusion 12g of the pressing body 12e presses the front surface of the disk 16 held vertically by the U-shaped second holding groove 10d of the second holding section 10. I have to do it.

The clamper 12 is held by a clamper holder 14. A hole 14a is formed in the center portion of the clamper holder 14, and a ring-shaped ring 15 is fitted in the hole 14a. A U-shaped ring groove 15 a is formed in the ring 15 inward.
A ring-shaped protruding ring 12n is provided so as to protrude outwards concentrically with the outer periphery of the clamp portion 12a. The protruding ring 12n of the clamp part 12a is loosely fitted in the ring groove 15a, and the clamper 12 is movable in the front-rear direction together with the turntable 4 within the range of the width of the ring groove 15a.

  The recording / reproducing position of the disc of the turntable 4 is the same for both the 8 cm disc 16 and the 12 cm disc 18. The turntable 4 and the clamper 12 pinch the disk 16 or the disk 18 by a magnetic force and move within the range of the width of the ring groove 15 a, and the peripheral end surface of the disk 16 or the disk 18 is the first holding part 11. The turntable 4 reaches the recording / reproducing position of the disc when the clamper 12 is in a position not constrained by the clamper holder 14 so as to face the one holding groove 11d.

By the way, as shown in FIG. 4, columnar guide rails 2, 2 are arranged in the vertical direction on both side edges of the front surface of the housing 1. Protrusions 9a and 9a projecting outward at the respective rear end portions on both sides of the tray 9 are fitted into the guide holes 2a and 2a of the guide rails 2 and 2 so as to be slidable. The central portions on both sides of the tray 9 are pivotally supported by the tip portions 3a and 3a of the L-shaped levers 3 and 3, and the protruding portions 9a and 9a are the lower end portions 2c and 2c of the guide holes 2a and 2a. The levers 3 and 3 hold the tray 9 horizontally when they are in contact with each other. The base of the lever 3 is connected to a rotating shaft (not shown) of a gear mechanism 5 that moves the tray 9 along the guide rail 2.
When the tray 9 is held horizontally, the clamper holder 14 is horizontal on the lower side of the tray 9.

  When the control circuit (not shown) drives the motor 5a, the gears of the gear mechanism 5 rotate, the tray 9 moves along the guide rail 2, and the projection 9a of the tray 9 becomes the guide hole 2a. When the tray 9 becomes vertical, the clamper holder 14 starts rotating from the horizontal position, and when the clamper holder 14 becomes vertical, the gear mechanism 5 stops. It is like that.

Next, the operation of the disk device according to the present embodiment will be described.
First, loading and unloading of the disk 16 having a diameter of 8 cm will be described.
FIG. 5 is a side sectional view showing a state in which the disk device according to the present embodiment holds the disk, and FIG. 6 is a side sectional view showing a state in which the disk is released.
As shown in FIG. 1, first, when a switch (not shown) is turned on, a control circuit (not shown) of the disk device drives a motor 5a and interlocks with the rotation of the gear mechanism 5, The clamper holder 14 rotates and opens to the front side. As soon as the clamper holder 14 opens and becomes horizontal, the levers 3 and 3 start to rotate by the gear mechanism 5. When the levers 3 and 3 are rotated forward, the projections 9a and 9a of the tray 9 slide down the guide rails 2 and 2 downward. The levers 3 and 3 hold the tray 9 and rotate to the front side, and the front surface of the tray 9 faces upward. As shown in FIG. 4, when the tray 9 becomes horizontal, the motor 5a stops. And the switch turns off.

  Next, when the disk 16 is placed on the disk contact surface 10e of the second holding unit 10 and the switch is turned on, the control circuit drives the motor 5a and moves the lever in conjunction with the rotation of the gear mechanism 5. 3, 3 and 3 are rotated rearward, the protrusions 9a and 9a of the tray 9 slide upward on the guide rails 2 and 2, and the tray 9 rises vertically.

  When the protrusions 9a and 9a come into contact with the upper end portions 2b and 2b of the guide tors 2 and 2, the tray 9 becomes vertical, and the rear peripheral surface of the disk 16 is the rear peripheral surface of the V-shaped groove 10c. , The lower peripheral edge of the disk 16 is fitted into the second holding groove 10d, and the second holding part 10 holds the disk 16 vertically.

  At the same time as the tray 9 becomes vertical, the gear mechanism 5 starts the rotation of the clamper holder 14, the clamper 12 faces the disk 16, and at the same time the clamper holder 14 becomes vertical, the protrusion 12g of the pressing body 12e is moved to the disk. The front surface of 16 is pressed.

  As soon as the clamper holder 14 becomes vertical, the turntable 4 moves from the standby position where the turntable 4 is waiting to the recording / reproducing position of the disc, and the fitting portion 4b of the turntable 4 is fitted into the central hole 16c of the disc 16. Go. When the fitting portion 4b is inserted into the central hole 16c of the disc 16, the turntable 4 lifts and discs the disc 16 with the projection 12g of the pressing body 12e pressing the disc 16, and the column base 4f fits into the central hole 16c of the disk 16, and at the same time, the truncated cone 4h protrudes from the central hole 16c, the peripheral surface of the disk 4c of the turntable 4 abuts the peripheral surface of the central hole 16c of the disk 16, and the protrusion 12g Presses the disk 16 against the turntable 4.

  Further, the turntable 4 moves in the direction of the recording / reproducing position of the disk 16 against the urging force that urges the pressing body 12e, and the fitting part 4b in a state where the protrusion 12g presses the disk 16 against the turntable 4. Reaches a set distance at which the magnet 4e and the yoke 12c are attracted to the periphery of the concave portion 12k of the clamp portion 12a, and the clamper 12 is pulled by the attractive force of the magnet 4e and the yoke 12c. The disc 16 is sandwiched between the turntable 4.

When the clamper 12 clamps the disk 16 with the turntable 4, the clamper 12 moves within the movable range, that is, the range of the width of the ring groove 15 a toward the turntable 4, and the ring-shaped protruding ring 12 n of the clamper 12. However, it contacts the inner peripheral surface of the ring groove 15a on the turntable 4 side.
When the clamper 12 clamps the disk 16 with the turntable 4, the recess 12k of the clamper 12 is fitted into the truncated cone 4h of the fitting portion 4b, and the positioning shaft 12j is fitted into the fitting hole 4d of the truncated cone 4h. Accordingly, the rotation axis of the turntable 4 and the rotation axis of the clamper 12 coincide with each other, and the turntable 4 and the clamper 12 are in close contact with each other with the peripheral surface of the central hole 16c of the disk 16 interposed therebetween.

  In a state where the turntable 4 and the clamper 12 hold the disk 16, the clamper 12 moves in the width direction of the ring groove 15a in accordance with the movement of the turntable 4, and the first end with the peripheral end surface of the disk 16 floating. When the position reaches the first holding groove 11 d of the holding unit 11, the turntable 4 reaches the recording / reproducing position of the disk 16.

  When the turntable 4 reaches the recording / reproducing position of the disk 16, the ring-shaped protruding ring 12 n of the clamper 12 is positioned at the approximate center of the ring groove 15 a of the clamper holder 14, and the clamper 12 is not restrained by the clamper holder 14. Thus, the turntable 4 holds the clamper 12.

Then, the turntable 4 rotates, and the disk 16 rotates while the turntable 4 and the clamper 12 sandwich the disk 16. Next, the pickup 6 moves laterally in the radial direction of the disk 16 from the home position by the drive mechanism 8 to record or reproduce information on the disk 16.
After the recording / reproducing of the disk 16 is completed, the pickup 6 returns to the home position, the turntable 4 stops rotating, and the turntable 4 returns to the rear standby position.

When the turntable 4 moves to the rear standby position, the protrusion 12g presses the disk 16 against the turntable 4, and the turntable 4 and the clamper 12 move in a close contact state with the disk 16 sandwiched therebetween. The clamper 12 moves in the width direction of the ring groove 15a, which is the movable range, and the protruding ring 12n of the clamper 12 contacts the inner peripheral surface of the ring groove 15a of the clamper holder 14 on the turntable 4 side. When the protruding ring 12n comes to a position where it comes into contact with the inner peripheral surface of the ring groove 15a, the clamper holder 14 locks the clamper 12 to prevent the clamper 12 from moving to the turntable 4 side.
The turntable 4 moves rearward against the attracting force of the magnet 4e and the yoke 12c, the turntable 4 is detached from the clamper 12, and the truncated cone 4h of the fitting portion 4b and the recess 12k of the clamp portion 12a The fitting and positioning shaft 12j is disengaged from the fitting hole 4d.

  The projecting portions 12g, 12g, and 12g of the turntable 4 and the pressing body 12e are moved to the rear side with the movement of the turntable 4 by holding the disk 16 by the urging force of the pressing spring 12d, and the pressing body 12e is moved to the clamp portion 12a. It contacts the yoke 12c.

  When the pressing body 12e comes into contact with the yoke 12c, the protrusion 12g of the pressing body 12e comes into contact with the turntable 4 from a state where it presses the disk 16, and the column base 4f of the turntable 4 holds the disk 16. . Further, when the turntable 4 moves rearward, the peripheral surface of the disk 16 comes into contact with the disk contact surface 10e of the recess 10a, and the fitting between the column base 4f and the central hole 16c is released, and the disk 16 is removed. It falls along the rear peripheral surface of the V-shaped groove 10c of the recess 10a and fits into the U-shaped second holding groove 10d, and the second holding unit 10 holds the disk 16 in the vertical direction.

When unloading the disk 16, when the switch is turned on, the control circuit of the disk device drives the motor 5a, and in conjunction with the rotation of the gear mechanism 5, the clamper holder 14 rotates and opens to the front side. To go. As soon as the clamper holder 14 opens and becomes horizontal, the levers 3 and 3 start to rotate by the gear mechanism 5. When the levers 3 and 3 are rotated forward, the projections 9a and 9a of the tray 9 slide down the guide rails 2 and 2 downward. The levers 3 and 3 hold the tray 9 and rotate to the front side, and the front surface of the tray 9 faces upward. As shown in FIG. 4, when the tray 9 becomes horizontal, the motor 5a stops. And the switch turns off.
Finally, the disk 16 is removed from the second holding unit 10 of the tray 9.

Next, loading and unloading of the disk 18 having a diameter of 12 cm will be described.
FIG. 7 is a side sectional view showing a state in which the disk device according to the present embodiment clamps the disk, and FIG. 8 is a side sectional view showing a state in which the disk clamping is released.
As shown in FIG. 4, first, when the disk 9 is placed on the disk contact surface 11e of the first holding unit 11 and the switch is turned on while the tray 9 is horizontal, the control circuit The motor 5a is driven, and the levers 3 and 3 are rotated rearward in conjunction with the rotation of the gear mechanism 5, and the projections 9a and 9a of the tray 9 slide on the guide rails 2 and 2 upward. Tray 9 stands up.

  When the projections 9a and 9a are in contact with the upper ends 2b and 2b of the guide holes 2a and 2a, the tray 9 is vertical, and the rear peripheral surface of the disk 18 has a V-shaped groove 11c. It falls along the surface, the lower peripheral edge of the disk is fitted into the first holding groove 11d, and the first holding part 11 holds the disk 18 in the vertical direction.

At the same time as the tray 9 becomes vertical, the gear mechanism 5 starts the rotation of the clamper holder 14, the clamper 12 faces the disk 18, and the protrusion 12 g of the pressing body 12 e presses the disk 18. When the protrusion 12g presses the disk 18, the disk 18 slightly tilts up the rear peripheral surface of the V-shaped groove 11c, and the upper peripheral end of the disk 18 is the disk contact surface of the first holding unit 11. 11e.
When the clamper holder 14 becomes vertical, the protrusion 12g of the pressing body 12e is pressed against the disk contact surface 11e of the recess 11a by the urging force of the pressing spring 12d and held.

Next, at the same time as the clamper holder 14 becomes vertical, the turntable 4 moves from the standby position to the recording / reproducing position of the disc. When the turntable 4 moves from the through hole 9b of the tray 9 to the recording / reproducing position of the disc 18, the fitting portion 4b of the turntable 4 with the projection 12g pressing the disc 18 against the disc abutting surface 11e. Fits into the central hole 18c of the disk 18 and lifts the disk 18. When the fitting part 4 b lifts the disk 18, the lower peripheral edge of the disk 18 comes out of the U-shaped first holding groove 11 d, and the rear peripheral surface of the disk 18 is formed on the first holding part 11. It slides upward along the rear peripheral surface of the V-shaped groove 11 c and abuts evenly on the disk contact surface 11 e of the first holding part 11.
When the turntable 4 moves forward with the protrusion 12g pressing the disk 18 against the disk contact surface 11e, the column base 4f is fitted into the center hole 18c of the disk 18, and the truncated cone 4h is centered. It protrudes from the hole 18c.

  When the turntable 4 moves in the direction of the recording / reproducing position of the disk 18 against the urging force that urges the pressing body 12e, the protrusion 12g presses the disk 18 against the turntable 4. When the fitting portion 4b of the turntable 4 approaches a distance of about the thickness of the disk 18 from the periphery of the concave portion 12k of the clamp portion 12a, it reaches a set distance where the magnet 4e and the yoke 12c are attracted, and the magnet 4e and the yoke 12c. The clamper 12 clamps the disk 18 with the turntable 4 by the suction force.

When the clamper 12 clamps the disk 18 with the turntable 4, the clamper 12 moves to the turntable 4 side within the movable range, that is, the range of the width of the ring groove 15a. However, it contacts the inner peripheral surface of the ring groove 15a on the turntable 4 side.
When the clamper 12 clamps the disk 18 with the turntable 4, the recess 12k of the clamper 12 is fitted into the truncated cone 4h of the fitting portion 4b, and the positioning shaft 12j is fitted into the fitting hole 4d of the truncated cone 4h. Accordingly, the rotation axis of the turntable 4 and the rotation axis of the clamper 12 coincide with each other, and the turntable 4 and the clamper 12 are in close contact with each other with the peripheral surface of the central hole 18c of the disk 18 interposed therebetween.

  The turntable 4 and the clamper 12 move while sandwiching the disk 18, the clamper 12 moves in the width direction of the ring groove 15 a, and the first holding portion 11 performs the first holding with the peripheral end surface of the disk 18 floating. When the position is opposite to the groove 11d, the turntable 4 reaches the recording / reproducing position of the disk 18.

  When the turntable 4 reaches the recording / reproducing position of the disk 18, the ring-shaped protruding ring 12 n of the clamper 12 is positioned substantially at the center of the ring groove 15 a of the clamper holder 14, and the clamper 12 is not restrained by the clamper holder 14. Thus, the turntable 4 holds the clamper 12.

Then, the turntable 4 rotates, and the disk 18 rotates while the turntable 4 and the clamper 12 sandwich the disk 18. Next, the pickup 6 moves laterally in the radial direction of the disk 18 from the home position by the drive mechanism 8 to record or reproduce information on the disk 18.
After the recording / reproducing of the disk 18 is completed, the pickup 6 returns to the home position, the turntable 4 stops rotating, and the turntable 4 returns to the rear standby position.

When the turntable 4 moves rearward, the protruding ring 12n of the clamper 12 comes into contact with the inner peripheral surface on the turntable 4 side of the ring groove 15a of the clamper holder 14, and the clamper holder 14 locks the clamper 12. Thus, the movement of the clamper 12 toward the turntable 4 is prevented.
The turntable 4 moves rearward against the attracting force of the magnet 4e and the yoke 12c, the turntable 4 is detached from the clamper 12, and the truncated cone 4h of the fitting portion 4b and the recess 12k of the clamp portion 12a The fitting and fitting hole 4d and the positioning shaft 12j are disengaged, and the disk 18 contacts the disk contact surface 11e of the recess 11a.

Further, when the turntable 4 is moved rearward, the center hole 18c of the disk 18 and the column base 4f are disengaged in a state where the protrusion 12g presses the disk 18 against the disk contact surface 11e, and the pressing body 12e. Maintains the pressed state by the urging force of the pressing spring 12d.
Finally, the turntable 4 returns to the standby position and enters a standby state.

When unloading the disk 18, when the switch is turned on, the control circuit of the disk device drives the motor 5a, and in conjunction with the rotation of the gear mechanism 5, the clamper holder 14 rotates and opens to the front side. Go. When the clamper holder 14 is opened, the protrusion 12g of the pressing body 12e maintains the state of pressing the disk 18, and the pressing spring 12d extends while pressing the pressing body 12e, and the pressing body 12e becomes the yoke 12c. Abut.
When the pressing body 12e comes into contact with the yoke 12c, the protrusion 12g of the pressing body 12e is separated from the disk 18, and the disk 18 falls along the V-shaped groove 11c of the recess 11a, so that the first U-shaped holding is performed. The first holding part 11 is fitted in the groove 11d and holds the disk 18 in the vertical direction.

As soon as the clamper holder 14 opens and becomes horizontal, the lever 3 starts to rotate by the gear mechanism 5. When the levers 3 and 3 are rotated forward, the projections 9a and 9a of the tray 9 slide down the guide rails 2 and 2 downward. The lever 3 holds the tray 9 and rotates to the front side, and the front surface of the tray 9 faces upward. As shown in FIG. 4, when the tray 9 becomes horizontal, the motor 5a stops, The switch turns off.
When the disk 18 is removed from the tray 9 and the switch is turned on, the tray 9 rotates and becomes vertical, and at the same time, the clamper holder 14 starts to rotate and closes, and the switch is turned off.

  In the disk device according to the present embodiment having such a configuration, the disk 16 or the disk 18 does not move in the moving direction of the turntable 4 in a state where the pressing body 12e presses the disk 16 or the disk 18, and the turntable 4 is fitted. The joining portion 4b can be fitted into the respective central holes 16c and 18c of the disc 16 or the disc 18 and reliably centered. Further, the ring groove 15a of the clamper holder 14 locks the protruding ring 12n of the clamper 12, thereby preventing the movement of the clamper 12, and the protruding portion 12g of the pressing body 12e pulls the disk 16 or the disk 18 away from the clamper 12. Since the direction is pressed, the turntable 4 can be detached from the clamper 12 without applying a load to the peripheral surface of the disk 16 or the disk 18. Further, when the disk 16 is unloaded, the projection 12g of the pressing body 12e presses the disk 16 while the turntable 4 holds the disk 16, and the second holding groove 10d is pressed with the peripheral end surface of the disk 16 floating. Therefore, when the turntable 4 returns to the standby position, the second holding unit 10 can reliably hold the disk 16. In the case of the disk 18 having a diameter larger than that of the disk 16, the state in which the protrusion 12 g of the pressing body 12 e presses the disk 18 against the disk contact surface 11 e of the first holding unit 11 when the disk 18 is unloaded is maintained. Therefore, when the clamper 12 is released, the first holding unit 11 can reliably hold the disk 18.

In this embodiment, the magnet 4e is disposed on the turntable 4 and the yoke 12c is disposed on the clamper 12. However, the present invention is not limited to this, and the yoke is disposed on the turntable 4 and the clamper. You may make it arrange | position a magnet to 12. In addition, although the example in which the tray 9 transports the disk 16 or the disk 18 from the horizontal to the vertical direction has been described, the vertical tray facing the turntable 4 may be taken in and out in a vertical posture. In this case, the clamper may be moved together with the turntable so as to face the recording / reproducing position of the disc.
Furthermore, the disk device provided with the clamper 12 according to the present embodiment can be applied to any type in which the disk is placed vertically or horizontally on the turntable.

It is the perspective view which looked at the vertical type disk device concerning this embodiment from the front. It is a fragmentary sectional side view of a clamper mechanism. It is a front view of a clamper. It is the perspective view which looked at the state which took out the tray of a disc device from the front. It is a sectional side view which shows the state which the disk apparatus concerning this Embodiment clamped the disk. It is side sectional drawing which shows the state which cancelled | released clamping of the disk. It is a sectional side view which shows the state which the disk apparatus concerning this Embodiment clamped the disk. It is side sectional drawing which shows the state which cancelled | released clamping of the disk.

Explanation of symbols

4 turntable 4b fitting portion 4e magnet 9 tray 9b through hole 10 second holding portion 10b second opening portion 10d second holding groove 11d first holding groove 11 first holding portion 11b first opening portion 12 clamper 12b base shaft (fitting) Pillar)
12d Pressing spring 12e Pressing body 12f Convex part (locking part)
12g Protrusion 12k Concave 12n Protrusion wheel 14 Clamper holder 14a Hole 15 Ring 15a Ring groove 16, 18 Disc 16c, 18c Center hole

Claims (4)

A turntable that has a fitting portion that fits and protrudes into a central hole formed in the center of the disc, and moves from a standby position to a recording / reproducing position for recording / reproducing information on the disc;
A tray facing the turntable and holding a disc;
A clamper that has a recess into which the fitting part fits, and that moves together with the disc sandwiched between the turntable,
In a disk device in which a magnet is disposed on either the turntable or the clamper, and the clamper is attracted to the turntable by a magnetic force,
The clamper is provided with a ring-shaped pressing body biased toward the turntable, concentrically with the recess,
The disc device according to claim 1, wherein a plurality of projecting portions projecting toward the turntable are provided on an outer peripheral edge of the pressing body. The clamper is
A plurality of holes that are drilled in an edge of the clamper, and project the protrusions;
It is provided on the opposite side of the turntable, and a fitting column that is fitted to the pressing body,
The fitting column is inserted, and one end is pressed against the pressing body, and the other end includes a pressing spring that is locked to a locking portion that protrudes from a side surface of the tip of the fitting column. The disk device according to claim 1. The tray
A circular tray-shaped first holding part having an opening on the clamper side,
A second holding part that is concentric with the first holding part and is recessed in a hollow cylindrical shape having a smaller diameter than the opening on the turntable side,
The second holding part has a hole facing the turntable,
Respective first and second holding grooves for holding the disc vertically are provided on the inner peripheral surfaces of the first and second holding portions,
The disk device according to claim 2, wherein the protruding portion protrudes to the periphery of the second holding groove when the pressing spring presses the pressing body. A clamper holder for loosely fitting the clamper;
The clamper holder is
A hole formed concentrically with the fitting portion;
A ring fitted into the hole and having a groove formed on the inner peripheral surface,
4. The clamper according to any one of claims 1 to 3, wherein the clamper has a disc shape, and a projection ring having a ring-shaped projection concentrically formed with the clamper is outwardly fitted to the ring. The disk device described in one.

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