JP2000322799A - Disk chucking device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To accurately center a disk to a turntable, and to easily detach the disk from the turntable. SOLUTION: A centering part 21 provided in a centering member 20 and a lower surface side of a center hole 1a of a disk 1 are abutted on the midway of loading the disk 1 on a turntable 10, the disk 1 is loaded on the turntable 10, and even when the disk is pressed to the turntable 10 by a holding member 30, the centering part 21 keeps pressing the rear surface side of the center hole 1a of the disk 1 by a first elastic member 41, and thus accurate centering is carried out irrespective of variance in the diameter of the center hole 1a of the disk 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk chucking device applied to an optical disk device or the like and chucking a disk as a storage medium.

[0002]

2. Description of the Related Art In recent years, in optical disk devices and the like,
The development of small, lightweight, and thin models has been actively pursued in order to expand them into notebook-type personal computers or portable players. Accordingly, in a disk chucking device, a mechanical chucking system using a clamper and a self-holding chucking system for self-locking a disk on a turntable have been developed.

As a conventional disk chucking device,
There is a type in which a center hole of a disk is fitted, the disk is chucked by a plurality of holding claws, and a centering member for centering the disk is further provided.

FIG. 16 is a sectional view of a main part of a conventional disk chucking apparatus.
Reference numeral 02 denotes a turntable on which the disk 101 is placed. A centering member 103 is slidably provided inside the turntable 102. A compression coil spring 104 urges the centering member 103 upward. Reference numeral 105 denotes a holding claw, which is rotatably provided around the shaft 107 on the turntable 102, and presses and holds the upper surface side of the center hole 101a of the disk 101. Reference numeral 106 denotes a compression coil spring that urges the holding claw 105 in the outer peripheral direction. Reference numeral 108 denotes a drive motor for rotating the turntable 102 by the rotation shaft 109.

Hereinafter, the operation of the disk chucking apparatus having the configuration shown in FIG. 16 will be described.

When the disk 101 is carried above the turntable 102, the center hole 10 in the disk 101 is moved.
The lower surface side of 1a contacts the inclined surface 105a of the holding claw 105. Next, when the disc 101 is pressed, the holding claws 105 pressed against the peripheral wall of the center hole 101a of the disc 101
The disk 101 rotates in the inner circumferential direction of the disk 101 against the compression coil spring 106. At about the same time, the peripheral wall of the center hole 101a of the disk 101 abuts the centering member 103, and the centering member 103 is
Press down against When the disc 101 is further pressed,
The disc 101 comes into contact with the turntable 102 and is simultaneously pressed and held by the holding claws 105.

When the disk 101 is to be detached from the turntable 102, the disk 101 is directly grasped, and the retaining claw 105 is pivotally moved against the urging force of the compression coil spring 106 to be detached.

[0008]

However, in the above-described conventional configuration, the center hole 101a in the disk 101 is not provided.
In order to remove the disk 101 from the turntable 102 by hand while the load due to the urging force of the holding claw 105 is applied to the peripheral wall of the disk, a load that causes the information recording surface of the disk 101 to be twisted or warped is applied, A load is applied to the peripheral wall of the center hole 101a. For this reason, there has been a problem that the reliability of the laminated disk is reduced.

An object of the present invention is to solve the above-mentioned problems of the conventional disk chucking apparatus, and to improve the operability when removing a disk, eliminate the burden on the disk, and accurately center the disk. It is an object of the present invention to provide a disk chucking device capable of performing the above.

[0010]

In order to achieve the above object, a disk chucking device according to the present invention comprises a turntable having a mounting surface on which a disk is mounted and rotatable, and a center of the turntable. , Which is provided so as to be movable vertically and rotatably about the rotation axis of the turntable, and to perform centering of the disk and release of the disk from the mounting surface. A centering member having a member, a first elastic member for urging the centering member in an upward direction, and a holding member which is supported by the turntable so as to be rotatable in a radial direction of the disk, and presses and holds the disk. A member and a second elastic member for urging the holding member in the outer peripheral direction of the disk, by pressing and rotating the centering member, Wherein the serial release member from the mounting surface to protrude disk side pushes up the disc, characterized by being configured to disengage from the mounting surface by releasing the disk from the holding by the holding member.

According to another aspect of the present invention, there is provided a turntable having a mounting surface on which a disk is mounted, and rotatably held in a direction in which the turntable protrudes or retracts from the mounting surface toward the disk. A detaching member that detaches the disk from the mounting surface, and is provided at a central portion of the turntable so as to be movable vertically and rotatably about a rotation axis of the turntable, A centering member having a pressing member for centering the disk and pressing and rotating the release member, a first elastic member for urging the centering member upward, and freely rotatable in a radial direction of the disk A holding member that is supported by the turntable and presses and holds the disc; and a second elastic member that urges the holding member in the outer peripheral direction of the disc. By pressing the centering member, the pressing member presses and rotates the release member, and the release member protrudes from the mounting surface to the disk side to push up the disk, and the disk is held by the holding member. It is characterized in that it is configured to be released from the holding and detached from the placing surface described above.

The present invention also provides a turntable having a mounting surface on which a disk is mounted and which is rotatable, a turntable located at the center of the turntable, which is vertically movable and is capable of moving vertically. A centering member rotatably provided on a rotation axis about a rotation center for centering the disk, a first elastic member for urging the centering member upward, and a radial rotation of the disk A holding member that is freely supported by the turntable and presses and holds the disk, a second elastic member that urges the holding member in an outer peripheral direction of the disk, and protrudes from the mounting surface toward the disk. Alternatively, a detaching member that is rotatably held in the retracting direction and detaches the disk from the mounting surface, a pressing operation member that presses and rotates the detaching member, Third urging the pressure operation member upward
Elastic member, and by pressing the pressing operation member, the pressing operation member presses and rotates the release member, the release member protrudes from the mounting surface to the disk side and pushes up the disk, The disk is released from holding by the holding member and is detached from the mounting surface.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to FIGS.

(Embodiment 1) FIG. 1 is an exploded perspective view showing a configuration of a disk chucking device according to a first embodiment of the present invention, and FIG. 2 is a perspective view of an assembled state of the disk chucking device according to the first embodiment. FIGS. 3 (a) and 3 (b) are operation explanatory views showing a method of mounting a disk in the first embodiment on a turntable, FIG. 4 is a cross-sectional view of a state in which the disk in the first embodiment is mounted on a turntable,
FIGS. 5A and 5B are operation explanatory diagrams showing a method of detaching the disk from the turntable in the first embodiment.

1 to 5, reference numeral 1 denotes a disk, 2
Is a drive motor for rotating the disk 1, 3 is a rotation axis of the drive motor 2, 10 is fixed to the rotation axis 3,
Is a turntable on which is placed. Turntable 10
Is fixed to the rotating shaft 3 by press fitting or screwing. Further, the turntable 10 rotates with the rotating shaft 3 and the drive motor 2 as a driving mechanism, and has an upper surface serving as a mounting surface 11 on which the disk 1 is mounted. The rubber is coated to increase the coefficient of friction. Reference numeral 12 denotes a concave portion formed on the inner periphery of the mounting surface 11 of the turntable 10 so that when the disk 1 is mounted, a detaching claw 26 described later can be retracted so as not to come into contact with the disk 1. . Reference numeral 13 denotes a wall, which restricts the holding member 30 described later from being excessively tilted in the radial direction of the turntable 10 by the urging force of a second elastic member 42 described later when the disk 1 is not placed. Reference numerals 14 and 15 denote bearings, which are configured so that the rotating shaft 32 provided on the holding member 30 can be gripped by the bearings 14 and 15.

Further, reference numeral 16 denotes a slide portion, which is a groove provided on the inner periphery of the mounting surface 11 of the turntable 10 and into which a leg portion 23 of a centering member 20, which will be described later, is inserted. It is a guide when sliding in the direction. Reference numeral 17 denotes a locking portion, which is formed so that a hook portion 24 provided on the centering member 20 is locked. This allows the centering member 20
However, it prevents the turntable 10 from separating from the turntable 10 due to the urging force of a first elastic member 41 described later. Reference numeral 18 denotes a ring-shaped hole for inserting and positioning the first elastic member 41.

As shown in FIG. 1, each part of the turntable 10 from the concave portion 12 to the locking portion 17 is provided at a position which divides the circumferential direction of the turntable 10 into three equal parts.

Reference numeral 20 denotes a centering member, which is arranged at the center of the turntable 10. Reference numeral 21 denotes a centering portion, which is formed in an arc shape having a center point substantially on the center line of the rotating shaft 3 and designed so as to abut the center hole 1a of the disk 1. Here, the centering unit 2
1 may have a tapered shape. Further, it is designed so as to be able to cope with a displacement of the bonding between the upper surface side and the lower surface side in the center hole 1a of the disk having the bonding structure.
That is, the centering member 20 is designed so that the upper surface side of the center hole 1a of the disc 1 having the laminated structure does not contact the centering member 20. Reference numeral 22 denotes a ceiling portion, on the back surface of which is provided a hole (not shown) into which the first elastic member 41 can be inserted.

Reference numeral 23 denotes a leg, and a part of the centering portion 21 is divided into three equal parts in the circumferential direction and formed at three places.
The leg portion 23 is accurately inserted into the slide portion 16 formed on the turntable 10 so that the centering member 20 can move freely in the up and down direction, and can rotate about the center line of the rotating shaft 3 of the drive motor 2 substantially at the center. It is configured as follows. Reference numeral 24 denotes a hook, which hangs down from the ceiling 22 and has a hook-like tip. Furthermore, the hook part 24
Are locked by locking portions 17 formed on the turntable 10 so that the centering member 20 does not come off from the turntable 10. Reference numeral 25 denotes a notch, which is provided at three locations in the circumferential direction, divided into three equal parts, and a holding member 30 described later is arranged. Reference numeral 26 denotes a detaching claw, which is formed to protrude outward from the cutout portion 25,
Further, the disk 1 is received in the concave portion 12 of the turntable 10 and protrudes from the mounting surface 11 when the centering member 20 is rotated to push up and release the disk 1. Also, the centering member 20 and the turntable 10
This means that the hook portion 24 of the centering member 20 is elastically deformed in the outer peripheral direction within the elastic range, is assembled into the turntable 10, and is locked by the locking portion 17, and is assembled.

Reference numeral 30 denotes a holding member, and reference numeral 31 denotes a holding surface of the holding member 30, which holds the disk 1 while pressing it against the turntable 10 by the urging force of the second elastic member 42. Reference numeral 32 denotes a rotation shaft, which is inserted between the bearings 14 and 15 of the turntable 10 and serves as a rotation center where the holding member 30 rotates in a direction of protruding or retracting from the centering member 20. Reference numeral 33 denotes an inclined surface portion, which is formed in a U-shaped cross section so that the center hole 1a of the disk 1 passes therethrough. Reference numeral 34 denotes a convex portion, into which the second elastic member 42 is inserted and positioned.

Reference numeral 41 denotes a first elastic member, which is a compression coil spring suspended between the turntable 10 and the centering member 20 and for urging the centering member 20 upward. Reference numeral 42 denotes a second elastic member, three of which are arranged in the circumferential direction. The second elastic member 42 is a compression coil spring that is suspended between the turntable 10 and the holding member 30 and urges the holding member 30 in the outer peripheral direction of the disk 1.

FIG. 2 is a perspective view showing an assembled state of the disk chucking device having the above-described configuration.

The operation of the first embodiment will now be described with reference to FIGS.
This will be described below.

First, referring to FIGS. 3 (a) and 3 (b),
The operation of attaching the to the turntable 10 will be described. The disc 1 is carried above the turntable 10, and the lower surface of the center hole of the disc 1 abuts on the inclined surface 33 of the holding member 30. This state is shown in FIG.

Next, when a slight force is applied to the disk 1 from above, the center hole 1a of the disk 1 slides on the inclined surface 33, and the holding member 30 moves the rotation shaft 32 against the second elastic member 42. About the center of the disk 1 in the inner circumferential direction. Then, the centering portion 21 provided in the centering member 20 and the lower surface side of the center hole 1a of the disk 1 come into contact with each other, and the centering member 20 starts to be pressed downward against the first elastic member 41. This state is shown in FIG.

When a force is further applied to the disk 1, the upper surface of the center hole 1 a of the disk 1 starts to contact the holding surface 31, and the holding member 30 moves in the outer circumferential direction of the disk 1 around the rotation shaft 32 as the rotation center. Rotate. Then, the disc 1 comes into contact with the mounting surface 11 of the turntable 10. This state is shown in FIG.
Shown in In this state, the lower surface side of the center hole 1a of the disk 1 and the centering portion 21 of the centering member 20 are kept in contact with each other by the urging force of the first elastic member 41. In addition, the holding member 30
The upper surface of the center hole 1a of the disk 1 abuts against the pressing surface 31 in a state of being pressed by the elastic member 42, and a pressing force for pressing the disk 1 against the mounting surface 11 is obtained. That is, the disk 1 is chucked to the turntable 10.

In this state, by driving the drive motor 2 and rotating the disk 1, signals can be recorded or reproduced on the disk 1.

Next, referring to FIGS. 5A and 5B,
Will be described from the turntable 10.

From the chucking state shown in FIG.
As shown in (a), the ceiling portion 22 on the opposite side of the separation claw 26 of the centering member 20 against the first elastic member 41.
Is pushed in by hand, the centering member 20 rotates about the center line of the rotation shaft 3 of the drive motor 2 as the center of rotation. At this time, the detaching claws 26 protrude from the mounting surface 11 of the turntable 10 and push up the disk 1. Then, the disc 1 separates from the pressing surface 31 of the holding member 30 and rides on the slope portion 33.

Next, when the hand is released from the centering member 20, the centering member 20 is lifted upward by the first elastic member 41 and returns to the original position. In this state, the disk 1 is completely separated from the turntable 10 and the disk 1 can be removed. This state is shown in FIG.
Shown in

As described above, according to the first embodiment, the centering portion 21 provided on the centering member 20 and the lower surface side of the center hole 1a of the disk 1 are brought into contact with each other while the disk 1 is mounted on the turntable 10. Further, even when the disc 1 is mounted on the turntable 10 and the disc 1 is pressed against the turntable 10 by the holding member 30, the centering portion 21 is moved by the first elastic member 41 into the center hole 1a of the disc 1. Since the state where the lower surface of the disk 1 is pressed is maintained, accurate centering can be performed regardless of the variation in the diameter of the center hole 1a of the disk 1.

Further, since the centering portion 21 is formed in an arc shape centered on the center line of the rotating shaft 3, even if the attitude of the disc 1 in contact with the centering portion 21 is inclined, the centering portion 21 can smoothly move. The lower surface of the center hole 1a of the disk 1 can be brought into contact with the centering portion 21.
Further, since the leg portion 23 is also formed in an arc shape and is precisely fitted to the slide portion 16, even if the centering member 20 is in a tilted state, the leg portion 23 resists the first elastic member 41 while maintaining its posture. Down, and more accurate centering becomes possible.

When the disk 1 is to be detached from the turntable 10, only the operation of pressing the centering member 20 by hand is sufficient, so that the detaching operation can be improved and the number of parts can be reduced.

Further, since the detaching claw 26 is formed in the cutout portion 25 of the centering member 20 and the holding member 30 is disposed, the operation area of the centering portion 21 can be increased, and more accurate centering can be performed. It becomes possible.

(Embodiment 2) FIG. 6 is an exploded perspective view showing a structure of a disk chucking device according to a second embodiment of the present invention, and FIG. 7 is an assembled state of a holding member and a detaching member according to the second embodiment. FIG. 8 is a perspective view of the disk chucking device according to the second embodiment, and FIGS.
(B) is an operation explanatory view showing a method of mounting a disk on a turntable in the second embodiment, FIG. 10 is a diagram showing a state in which the disk in the second embodiment is mounted on a turntable, and FIGS. 11 (a) and (b). () Is an operation explanatory view showing a method of detaching a disk from a turntable in the second embodiment.

The second embodiment differs from the first embodiment in that the detaching member is separated from the centering member. In the following description, members corresponding to the members described with reference to FIGS. 1 to 5 are denoted by the same reference numerals, detailed description thereof will be omitted, and members different from the first embodiment will be described.

In FIG. 6, reference numeral 50 denotes a holding member;
Reference numeral 1 denotes a holding surface of the holding member 50, which holds the disk 1 while pressing it against the turntable 10. Reference numeral 52 denotes a rotating shaft, which is inserted between the bearings 14 and 15 of the turntable 10 and has a centering member 70 which will be described later.
It is a pivot center that pivots in a direction of projecting or retracting from the camera. Numeral 53 denotes an inclined portion, which is formed in a V shape in cross section so that the center hole 1a of the disk 1 passes therethrough. 54
Is a cylindrical protrusion, and the pressing claw 75 of the centering member 70
Are formed so as to abut. 55 is a convex part,
The second elastic member 42 is inserted and positioned.

Reference numeral 60 denotes a detaching member which detaches the disk 1 from the mounting surface 11 of the turntable 10. Reference numeral 61 denotes a detaching claw, which is a portion that comes into contact with the disk 1 and pushes up the disk 1. Reference numeral 62 denotes a bearing portion, and the detaching member 60 can rotate around the rotation shaft 52 of the holding member 50 substantially by fitting into the rotation shaft 52 of the holding member 50. The bearing portion 62 has a cutout, and is designed so that the rotation shaft 52 of the holding member 50 can be easily fitted. FIG. 7 shows an assembled state of the holding member 50 and the detaching member 60. 63 is a pressing portion,
The pressing claw 75 of the centering member 70 is
Is pressed, the detaching member 60 rotates around the bearing 62.

A centering member 70 is arranged at the center of the turntable 10. Reference numeral 71 denotes a centering portion, which is formed in an arc shape having a center point substantially on the center line of the rotating shaft 3 and designed to contact the center hole 1a of the disk 1. Here, the centering portion 71 may have a tapered shape. Disc 1 with laminated structure
The center hole 1a is designed to be able to cope with misalignment between the upper surface side and the lower surface side. That is, the upper surface side of the center hole 1a of the disc 1 having the laminated structure is designed so as not to contact the centering member 70.

Reference numeral 72 denotes a ceiling, and a hole (not shown) into which the first elastic member 43 can be inserted is provided on the rear surface of the ceiling, dividing the circumferential direction into three equal parts. 73 is a leg,
A part of the centering portion 71 is divided into three equal parts in the circumferential direction.
It is formed in places. The leg portion 73 is accurately inserted into the slide portion 16 formed on the turntable 10, so that the centering member 70 can move freely in the vertical direction.
The rotation shaft 3 is configured to be able to rotate substantially on the center line thereof. Numeral 74 denotes a hook, which hangs down from the ceiling 72, and whose tip is formed in a hook shape. Further, the hook portion 74 is locked by the locking portion 17 formed on the turntable 10, and is formed so that the centering member 70 does not come off the turntable 10.

Also, when the centering member 70 and the turntable 10 are assembled, the hook portion 74 of the centering member 70 is elastically deformed in the outer peripheral direction within the elastic range, is incorporated into the turntable 10, and is locked by the locking portion 17. Is done.
This state is shown in FIG. Reference numeral 75 denotes a pressing claw,
The first pressing surface 76 hangs two from the back surface of the second member in the circumferential direction into three equal parts and presses the pressing portion 63 of the detaching member 60, and the inclined surface presses the cylindrical convex portion 54 of the holding member 50. A second pressing surface 77 is formed.

As described above, the structure different from that of the first embodiment is that the detaching member 60 for detaching the disk 1 from the turntable 10 is separated from the centering member 70.

The operation according to the second embodiment of the present invention will be described below with reference to FIGS.

First, the operation of mounting the disk 1 on the turntable 10 will be described with reference to FIG.

The disk 1 is carried above the turntable 10, and the lower surface of the center hole 1 a of the disk 1 is
0 abuts the slope 53. At this time, the detaching member 60 is pushed by the disc 1 and tends to come off from the locking portion 19 of the turntable 10. This state is shown in FIG.

Next, when a slight force is applied to the disk 1 from above, the center hole 1a of the disk 1 slides on the inclined surface 53 to move the holding member 50 and the rotating shaft 52 against the second elastic member 42. The disk 1 is rotated about the center in the inner circumferential direction. Then, the centering portion 71 provided in the centering member 70 and the lower surface side of the center hole 1 a of the disk 1 come into contact with each other, and the centering member 70 tries to be pressed downward against the first elastic member 43. At this time, the detaching member 60 is detached from the locking portion 19 and is accommodated in the concave portion 12 of the turntable 10 by a reaction force at the time of detachment. This state is shown in FIG.
(B).

When a force is further applied to the disk 1, the upper surface side of the center hole 1 a of the disk 1 starts to come into contact with the pressing surface 51, and the holding member 50 causes the rotating shaft 52 to move by the urging of the second elastic member 42. The disk 1 rotates toward the outer periphery of the disk 1 as a rotation center. Then, the disc 1 comes into contact with the mounting surface 11 of the turntable 10. This state is shown in FIG. In this state, the lower surface side of the center hole 1a of the disk 1 and the centering portion 71 of the centering member 70 are kept in contact with each other by the urging force of the first elastic member 43. When the holding member 50 is pressed by the second elastic member 42 in the outer peripheral direction of the disk 1, the upper surface of the center hole 1 a of the disk 1 abuts against the pressing surface 51, and the disk 1 is placed on the mounting surface 1.
A pressing force for pressing 1 is obtained. That is, the disk 1 is chucked to the turntable 10.

In this state, by driving the drive motor 2 and rotating the disk 1, signals can be recorded or reproduced on the disk 1.

Next, the operation of detaching the disk 1 from the turntable 10 will be described with reference to FIG.

When the ceiling 72 of the centering member 70 is pushed by hand from the chucking state shown in FIG. 10 against the first elastic member 43 as shown in FIG.
The distal end, which is the first pressing surface 76 of the pressing claw 75, presses the pressing portion 63 of the detaching member 60, and the detaching member 60 rotates about the bearing 62. At the same time, the slope portion of the pressing claw 75, which is the second pressing surface 77, presses the cylindrical convex portion 54 of the holding member 50, and the holding member 50 moves the rotating shaft 52 against the second elastic member 42. The disc 1 rotates in the direction of the inner circumference of the disc 1 substantially as a center. As the holding member 50 rotates, the pressing force on the disk 1 is released, and the disk 1
Can be reduced.

When the centering member 70 is further pushed in, the release member 60 and the holding member 50 further rotate, the disc 1 is further pushed up by the release claw 61, and the release member 60 is held at the position rotated by the locking portion 19. Then, the disk 1 is also held at this position. At this time, the lower surface of the disk 1 is located above the slope 53 of the holding member 50. This state is shown in FIG.

Next, when the user lifts his / her hand from the ceiling 72 of the centering member 70, the centering member 70 is lifted upward by the first elastic member 43, and stops at the position where the hook 74 and the engaging portion 17 are engaged. Return to the original position. At this time, the holding member 50 pressed by the pressing claw 75 is also released from the pressing claw 75, and is rotated by the second elastic member 42 in the outer peripheral direction of the disk 1 so that the holding member 50 does not come into contact with the center hole of the disk 1 and returns to its original state. Return to position. The detachment member 60 maintains the state locked by the locking portion 19. In this state, the disk 1 is completely separated from the turntable 10 and the disk 1 can be removed. This state is shown in FIG.

As described above, according to the second embodiment, when the disk 1 is detached from the turntable 10, the holding member 50 is also rotated, so that the load on the disk 1 by the holding member 50 can be eliminated. Thus, it is possible to prevent the disk 1 from being scratched or cracked. Other effects are the same as in the first embodiment.

(Embodiment 3) FIG. 12 is an exploded perspective view showing the structure of a disk chucking device according to a third embodiment of the present invention, FIG. 13 is a perspective view of the disk chucking device according to the third embodiment, and FIG. 15A and 15B are diagrams illustrating a state in which the disc according to the third embodiment is mounted on a turntable, and FIGS. 15A and 15B are operation explanatory diagrams illustrating a method of detaching the disc from the turntable according to the third embodiment.

The third embodiment is different from the second embodiment in that a detaching operation member for newly performing a detaching operation is provided. In the following description, members corresponding to the members described with reference to FIGS. 6 to 11 are denoted by the same reference numerals, detailed description thereof will be omitted, and members different from the second embodiment will be described.

Reference numeral 80 denotes a centering member, which is arranged at the center of the turntable 10. Reference numeral 81 denotes a centering portion, which is formed in an arc shape having a center point substantially on the center line of the rotating shaft 3 and designed to contact the center hole of the disk 1. Here, the centering portion 81 may have a tapered shape. Further, it is designed to be able to cope with the displacement of the bonding between the upper surface side and the lower surface side in the center hole 1a of the disk 1 having the bonding structure. That is, the upper surface side of the center hole 1a of the disc 1 having the laminated structure is designed so as not to contact the centering member 80. 8
Reference numeral 2 denotes a ceiling portion, and a hole (not shown) into which the first elastic member 43 can be inserted is provided on the back surface of the ceiling portion by dividing the circumferential direction into three equal parts. Reference numeral 83 denotes a leg, and a part of the centering portion is divided into three equal parts in the circumferential direction and formed at three places. The leg portion 83 is a slide portion 16 formed on the turntable 10.
The centering member 80 can be freely moved in the vertical direction, and can be rotated about the center line of the rotating shaft 3 substantially at the center. Reference numeral 84 denotes a hook, which hangs down from the ceiling 82 and has a hook-like tip. Further, the hook portion 84 is a turntable 1
The centering member 80 is locked by the locking portion 17 formed so as not to fall out of the turntable 10. Reference numeral 85 denotes a notch, which is 3 in the circumferential direction.
The holding member 50 and the detachment member 60 which will be described later are provided at three places equally. Also, the centering member 80 and the turntable 10 are assembled by the hook portion 84 of the centering member 80 being elastically deformed in the outer peripheral direction within the elastic range, being incorporated into the turntable 10 and being locked by the locking portion 17. Can be

Reference numeral 90 denotes a pressing operation member, which is an operation section for detaching the disk 1 from the turntable 10. 91
Denotes a pressing portion, which is a portion pressed by hand during operation. 9
Reference numeral 2 denotes a pressing claw, which is 3
The first pressing surface 93 which presses down the pressing portion 63 of the detaching member 60 hangs down two by two in the direction of equally dividing, and the inclined second pressing surface 94 which presses the cylindrical convex portion 54 of the holding member 50. It is formed. A hook portion 95 hangs down from the back surface of the pressing portion 91 and has a tip portion formed in a hook shape. Further, the hook portion 95 is locked by the locking portion 20 of the turntable 10, and is formed so that the pressing operation member 90 does not come off from the turntable 10. Further, the pressing operation member 90 and the turntable 10 are configured such that the hook 95 of the pressing operation member 90 elastically deforms in the inner circumferential direction within the elastic range and is locked by the locking portion 17 of the turntable 10. Assembled.

FIG. 13 is a perspective view of the disk chucking device of the third embodiment assembled as described above.

Hereinafter, the operation according to the third embodiment will be described with reference to FIGS. 14 and 15.

In the third embodiment, the operation of mounting the disc 1 on the turntable 10 is the same as that of the second embodiment, and a description thereof will be omitted. Fig. 14 shows the mounted state.
Shown in

Next, the operation of detaching the disk 1 from the turntable 10 will be described with reference to FIG.

When the pressing portion 91 of the pressing operation member 90 is manually pressed against the third elastic member 44 from the chucking state shown in FIG. 14 as shown in FIG. Of the first pressing surface 93 presses the pressing portion 63 of the release member 60, and the release member 60
2 about the center. At this time, the disc 1 pushed by the detaching claws 61 is in a state of being separated from the mounting surface 11. At the same time, the slope portion of the pressing claw 92, which is the second pressing surface 94, presses the cylindrical projection 54 of the holding member 50, and the holding member 50 moves the rotating shaft 52 against the second elastic member 42. The disc 1 rotates in the direction of the inner circumference of the disc 1 substantially as a center. The rotation of the holding member 50 releases the pressing force on the disk 1 and does not abut on the center hole 1a of the disk 1, so that the load on the disk 1 can be eliminated.

When the pressing operation member 90 is further pushed in, the detaching member 60 and the holding member 50 further rotate, and the disc 1 is further pushed up by the detaching claw 61, and the detaching member 6 is released.
0 is held at the position rotated by the locking portion 19, and the disk 1 is also held at this position. At this time, disk 1
Is located above the slope 53 of the holding member 50. This state is shown in FIG.

Next, when the hand is released from the pressing portion 91, the pressing operation member 90 is lifted upward by the third elastic member 44 and returns to the original position. At this time, the holding member 50 pressed by the pressing claw 92 is also released from the pressing claw 92, and is rotated by the second elastic member 42 in the outer peripheral direction of the disk 1, without contacting the center hole 1 a of the disk 1. Return to the position. The centering member 80 is also released from the disk 1 and is moved upward by the first elastic member 43, so that the hook 8
4 stops at the position where the engaging portion 17 engages with the locking portion 17. Also, the detaching member 60 maintains the state of being locked by the locking portion 19. In this state, the disk 1 is completely separated from the turntable 10 and the disk 1 can be removed. This state is shown in FIG.

As described above, according to the third embodiment, the detaching member 6 for detaching the disk 1 from the turntable 10
0, a pressing operation member 90 for rotating the detaching member 60
Further, by pressing the pressing operation member 90, the holding member 50 pressing and holding the disk 1 is also rotated, so that the operability of detaching the disk 1 from the turntable 10 is improved. The load on the disk 1 at the time of separation can be eliminated. Other effects are the same as in the first embodiment and the second embodiment.

[0066]

As described above, according to the present invention, the holding member for holding the disk on the turntable, the detaching member for detaching, the pressing operation member for rotating the holding member and the detaching member, and the like are provided. Therefore, the disc can be detached from the turntable, so that the operability at the time of detachment can be improved. Also, when the disc is removed,
Since the pressing force of the pressed holding member against the disk is released, the load on the disk can be eliminated, and the safety of the disk can be improved.

By arranging both the holding member and the detaching member in the cutout of the centering member, there is no adverse effect such as a reduction in the area of the centering portion due to the addition of the detaching member, and accurate centering can be performed. Become.

Also, by integrating the centering member and the pressing operation member, or by integrating the centering member, the release member and the pressing operation member, the above-described effects can be obtained, and the number of parts can be further reduced. be able to.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing a configuration of a disk chucking device according to a first embodiment of the present invention.

FIG. 2 is a perspective view of the disk chucking device according to the first embodiment of the present invention.

FIG. 3 is an operation explanatory view showing a method of mounting a disk on a turntable in the first embodiment of the present invention.

FIG. 4 is a diagram showing a state in which the disk according to the first embodiment of the present invention is mounted on a turntable.

FIG. 5 is an operation explanatory view showing a method of detaching the disk from the turntable in the first embodiment of the present invention.

FIG. 6 is an exploded perspective view showing a configuration of a disc chucking device according to a second embodiment of the present invention.

FIG. 7 is a perspective view showing an assembled state of a holding member and a detaching member according to a second embodiment of the present invention.

FIG. 8 is a perspective view of a disc chucking device according to a second embodiment of the present invention.

FIG. 9 is an operation explanatory view showing a method of mounting a disk on a turntable according to the second embodiment of the present invention.

FIG. 10 is a view showing a state in which a disk according to a second embodiment of the present invention is mounted on a turntable.

FIG. 11 is an operation explanatory view showing a method of detaching a disk from a turntable according to a second embodiment of the present invention.

FIG. 12 is an exploded perspective view showing a configuration of a disc chucking device according to a third embodiment of the present invention.

FIG. 13 is a perspective view of a disc chucking device according to a third embodiment of the present invention.

FIG. 14 is a diagram showing a state in which a disk according to the third embodiment of the present invention is mounted on a turntable.

FIG. 15 is an operation explanatory view showing a method for removing a disk from a turntable according to a third embodiment of the present invention.

FIG. 16 is a configuration diagram of a conventional disk chucking device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Disc 2 Drive motor 3 Rotating shaft 10 Turntable 11 Mounting surface 20, 70, 80 Centering member 26 Separating claw 30, 50 Holding member 41, 43 First elastic member 42 Second elastic member 44 Third elastic member 60 detaching member 75, 92 pressing claw 76, 93 first pressing surface 77, 94 second pressing surface 90 pressing operation member

Claims (8)

[Claims] 1. A turntable having a mounting surface on which a disk is mounted and rotatable, and a turntable located at a central portion of the turntable, movable vertically and on a rotation axis of the turntable. It is provided rotatably at the center of rotation,
A centering member having a detaching member for performing centering of the disc and detaching the disc from the mounting surface, and a first for urging the centering member upward.
An elastic member, a holding member rotatably supported by the turntable in a radial direction of the disk, and pressing and holding the disk, and a second biasing the holding member in an outer peripheral direction of the disk. An elastic member, and by pressing and rotating the centering member, the release member is protruded from the mounting surface to the disk side to push up the disk, and the disk is released from being held by the holding member. A disc chucking device configured to be detached from a writing surface. 2. A turntable having a mounting surface on which a disk is mounted and rotatable, and rotatably held in a direction in which the disk protrudes or retracts from the mounting surface toward the disk. A detaching member for detaching from the mounting surface, and a detachable member located at a central portion of the turntable, movably in the up-down direction and rotatably provided about a rotation axis of the turntable as a rotation center, and A centering member having a pressing member for performing centering and pressing and rotating the detaching member, a first elastic member for urging the centering member upward, and the turning member rotatably in a radial direction of the disk. Supported by the table,
A holding member that presses and holds the disc, and a second elastic member that urges the holding member in an outer peripheral direction of the disc, and presses the centering member so that the pressing member disengages the release member. Press and rotate,
A disk chucking device, wherein the detaching member projects from the mounting surface to the disk side to push up the disk, releases the disk from being held by the holding member, and separates from the mounting surface. . 3. The pressing member is provided with a first pressing surface for pressing and rotating the release member and a second pressing surface for pressing and rotating the holding member, and further pressed down by the first pressing surface. 3. The disk chucking according to claim 2, wherein a rotation angle of the rotating release member is set to be larger than a rotation angle of the holding member that is pressed down and rotated by the second pressing surface. apparatus. 4. A turntable having a mounting surface on which a disk is mounted and rotatable, and a turntable located at the center of the turntable, movable vertically and on a rotation axis of the turntable. Is provided rotatably around the center of rotation,
A centering member for centering the disk, a first elastic member for urging the centering member in an upward direction, and supported by the turntable so as to be rotatable in a radial direction of the disk, for pressing and holding the disk A holding member, a second elastic member for urging the holding member in an outer peripheral direction of the disk, and a rotatable holding member that is rotatably held in a direction of projecting or retracting from the mounting surface toward the disk. A detaching member for detaching from the placement surface, a pressing operation member for pressing and rotating the detaching member, and a third elastic member for urging the pressing operation member upward; By pressing
A pressing operation member presses and rotates the release member, and the release member projects from the mounting surface to the disk side to push up the disk, releases the disk from being held by the holding member, and separates from the mounting surface. A disk chucking device characterized in that the disk chucking device is configured to perform the following. 5. The pressing operation member is provided with a first pressing surface for pressing and rotating the release member and a second pressing surface for pressing and rotating the holding member, and further pressed down by the first pressing surface. 5. The disk chuck according to claim 4, wherein the rotation angle of the detachable member that is rotated is set to be larger than the rotation angle of the holding member that is pressed down and rotated by the second pressing surface. King device. 6. When the disk is detached, the holding member is rotated in the inner circumferential direction of the disk to release the pressing on the disk and not to contact the outer edge of the center hole of the disk. 5. The disk chucking device according to claim 2, wherein the disk chucking device is configured as follows. 7. The centering member is provided with a plurality of notches in a circumferential direction, and the holding member and the detaching member are arranged in a gap defined by the notches. Item 5. The disk chucking device according to item 2 or 4. 8. The rotation center of the holding member and the rotation center of the detachment member are made substantially the same.
Or the disk chucking device according to 4.