JP2003132608A - Disk chucking device, and recording and/or reproducing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily remove a disk placed on a turntable. SOLUTION: A disk chucking device is provided with: a turntable 8 which has a surface 8a for placing a disk 2 and is rotationally driven; a center cap 9 which is projected from the center of rotation of the turntable 8, centers the disk 2 by engaging with the center hole 2a of the disk 2 placed on the placing surface 8a of the turntable 8, and is pressed into the inside of the turntable 8 by pressing; and a plurality of chuck claws 11 which are projected from the outer circumferential part of the center cap 9 and pressed into the inside of the center cap 9 by pressing. Thus the disk 2 placed on the placing surface 8a of the turntable 8 is removed without touching the disk 2 by pressing the center cap 9.

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 for chucking a disk. The present invention also relates to a recording and / or reproducing apparatus that records and / or reproduces a signal on a disk which is a recording medium.

[0002]

2. Description of the Related Art Conventionally, a recording and / or reproducing apparatus for recording and / or reproducing a signal on / from a disk which is a recording medium, chucks the disk on a turntable which is rotationally driven by a spindle motor. Equipped with a disk chucking device.

As a disk chucking device, there is, for example, a ball chucking system or a claw chucking system. In both cases, the center hole of the disk is fitted into the center cap protruding from the rotation center of the turntable. Thus, the centering of the disc is performed, and the chucking of the disc is performed by holding the inner peripheral portion of the disc placed on the turntable by the plurality of chuck claws protruding from the outer peripheral portion of the center cap. There is.

For example, a disk chucking device 100 shown in FIGS. 18, 19 and 20 has a turntable 102 on which a disk 101 is mounted and a center for centering the disk 101 mounted on the turntable 102. The turntable 1 includes the cap 103 and the disc 101 fitted to the center cap 103.
02 and a plurality of chuck claws 104 to be held on the upper part 02.

The turntable 102 is a disc 101.
Has a mounting surface 102a on which is mounted, and the central portion thereof is mounted on the rotary shaft 105 of the spindle motor, so that it is rotationally driven by the driving force of the spindle motor.

The center cap 103 is used for the disk 10
It has an outer shape corresponding to one central hole 101a, and is provided so as to project from the rotation center of the turntable 102. Further, a plurality of cutouts 106 for projecting the plurality of chuck claws 104 from the inside are formed on the outer peripheral portion of the center cap 103. These plural notches 1
A plurality of 06 are formed on the outer periphery of the center cap 103 at equal intervals.
The outer peripheral portion of 03 is formed at three positions.

The plurality of chuck claws 104 are provided inside the center cap 103 so that the tips thereof protrude from the notches 106 of the center cap 103.
Further, the plurality of chuck claws 104 are urged by a compression coil spring 107 provided inside the center cap 103 in a direction projecting from the notch 106 of the center cap 103. Therefore, the plurality of chuck claws 104 can be pushed into the center cap 103 by being pressed.

In the disk chucking device 100 configured as described above, when the disk 101 is mounted on the mounting surface 102a of the turntable 102, the center hole 101a of the disk 101 is placed in the center cap 10.
The disc 101 is pressed against the mounting surface 102a of the turntable 102 in a state where the disc 101 is fitted. At this time, the plurality of chuck claws 104 are pushed into the inside of the center cap 103 while slidingly contacting with the inner peripheral portion of the disc 101, and then the cutout portion 1 of the center cap 103.
By projecting from 06, the turntable 102
The inner peripheral portion of the disk 101 mounted on the mounting surface 102a is held. As a result, the disc 101 can be placed on the placement surface 102a of the turntable 102.

On the other hand, the mounting surface 10 of the turntable 102
When removing the disc 101 placed on the 2a, mount the disc 101 on the placement surface 1 of the turntable 102.
Push up while warping in the direction away from 02a. At this time, the plurality of chuck claws 104 are pushed into the inside of the center cap 103 while being in sliding contact with the inner peripheral portion of the disc 101, thereby releasing the holding state with respect to the disc 101. With this, turntable 1
The disk 101 mounted on the mounting surface 102a of No. 02 can be removed.

[0010]

By the way, in the above-mentioned conventional disk chucking apparatus 100, the disk 1 mounted on the mounting surface 102a of the turntable 102 is mounted.
When removing 01, the user had to push up the disc 101 while warping the disc 101 in the direction away from the mounting surface 102a of the turntable 102.

For this reason, the user feels uncomfortable due to the warp of the disc 101 and anxiety due to the deformation of the disc 101, which is not always preferable for removing the disc 101. Further, it is not preferable to give a load to the disc 101, such as pushing it up while warping it.

Therefore, the present invention has been proposed in view of such a conventional situation, and a disk chucking device which can easily remove the disk without imposing a load on the disk. The purpose is to provide.

It is another object of the present invention to provide a recording and / or reproducing apparatus which is capable of further improving convenience by easily removing the disc.

[0014]

In order to achieve this object, a disk chucking device according to the present invention has a mounting surface on which a disk having a central hole is mounted and which is rotationally driven by a turntable. And the center of the disk mounted on the mounting surface of the turntable by being projected from the center of rotation of the turntable to center the disk, and by pressing the disk, The centering part is pushed inward, and the chuck part is protruded from the outer periphery of the centering part and is pushed into the centering part by being pressed. When the disc is placed on the placement surface of the turntable, the chuck portion is pushed into the centering portion while slidingly contacting the inner peripheral portion of the disc, and then protrudes from the outer peripheral portion of the centering portion. Thus, the disc fitted to the centering portion is held on the placement surface of the turntable, and when the disc placed on the placement surface of the turntable is removed, the centering portion is pressed to remove the disc. The disc is pushed into the centering part while making sliding contact with the inner peripheral part, and after releasing the holding state for the disc, it projects from the outer peripheral part of the centering part and releases the pressure on the centering part, so that the disc is mounted on the turntable. It is characterized by pushing up in the direction away from the placement surface.

As described above, in the disk chucking device according to the present invention, by pressing the centering portion, the disk mounted on the mounting surface of the turntable can be easily removed without touching the disk. You can

Further, the recording and / or reproducing apparatus according to the present invention comprises a disk chucking mechanism for chucking a disk having a central hole, and a disk rotation drive for rotating the disk chucked by the disk chucking mechanism. A mechanism and a recording / reproducing mechanism for recording and / or reproducing a signal to / from a disk which is rotationally driven by the disk rotational driving mechanism. The disk chucking mechanism has a mounting surface on which the disk is mounted, and is rotated from the turntable by the disk rotation driving mechanism and protrudes from the center of rotation of the turntable and is mounted on the mounting surface of the turntable. The centering of the disk is performed by being fitted into the center hole of the disk placed on the disk, and the centering section is pushed into the turntable by being pressed and is projected from the outer peripheral section of the centering section. Both are provided with a chuck part that is pressed into the centering part. When the disc is placed on the placement surface of the turntable, the chuck portion is pushed into the centering portion while slidingly contacting the inner peripheral portion of the disc, and then protrudes from the outer peripheral portion of the centering portion. Thus, the disc fitted in the centering portion is held on the placing surface of the turntable, and when the disc placed on the placing surface of the turntable is removed, the centering portion is pressed to remove the disc. While being slidably in contact with the inner peripheral part of the disc, the disc is pushed into the centering part to release the holding state with respect to the disc, then protrudes from the outer peripheral part of the centering part and releases the pressure on the centering part to release the disc from the turntable. It is characterized in that it is pushed up in the direction away from the mounting surface.

As described above, in the recording and / or reproducing apparatus according to the present invention, by pressing the centering portion, the disc mounted on the mounting surface of the turntable can be easily mounted without touching the disc. It can be removed.

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A disk drive device 1 shown as an embodiment of the present invention will be described in detail below with reference to the drawings.

A disc drive device 1 shown in FIG. 1 is a recording and / or reproducing device to which the present invention is applied for recording and / or reproducing a signal on an optical disc 2. Also,
The optical disk 2 has a substantially disc shape, has a central hole 2a in the center thereof, and has a main surface facing an optical pickup 5 described later as a signal recording surface.

The disk drive device 1 includes a disk chucking mechanism 3 for chucking the optical disk 2.
1, a spindle motor 4 which is a disk rotation driving mechanism for rotating the optical disk 2 chucked by the disk chucking mechanism 3 in a direction indicated by an arrow A in FIG. 1, and an optical disk 2 rotationally driven by the spindle motor 4. An optical pickup 5 which is a recording / reproducing mechanism for recording and / or reproducing a signal, a pickup feeding mechanism 6 for feeding the optical pickup 5 in the radial direction of the optical disc 2 shown by an arrow B in the figure, and these. And a supporting chassis 7.

As shown in FIG. 2, the disc chucking mechanism 3 is a disc chucking device to which the present invention is applied, and includes a turntable 8 on which the optical disc 2 is placed and which is rotationally driven by a drive motor 4. A center cap 9 which is fitted into the center hole 2a of the optical disc 2 mounted on the mounting surface 8a of the turntable 8 and which can be pushed into the mounting surface 8a of the turntable 8. , Center cap 9 to turntable 8
The first compression coil spring 10 for urging in a direction projecting from the mounting surface 8a and the optical disk 2 fitted in the center cap 9 are positioned and held on the turntable 8 and are moved to the inside of the center cap 9. A plurality of chuck claws 11 that can be pushed in and a plurality of chuck claws 1
A plurality of second compression coil springs 12 for urging 1 in a direction projecting from the outer periphery of the center cap 9, and a center cap 9 in which the plurality of chuck claws 11 and the second compression coil springs 12 are housed. It has a lid 13 for stopping.

The turntable 8, the center cap 9, the plurality of chuck claws 11 and the lid 13 are made of a material such as plastic, and the first and second compression coil springs 10 and 12 are made of metal or the like. It is formed by winding an elastic body in a coil shape.

The turntable 8 is shown in FIGS. 2, 3 and 4.
As shown in FIG.
And a center cap mounting recess 15 to which the center cap 9 is mounted, and a rotary shaft 4a of the spindle motor 4.
And a support portion 16 supported by the above, and these are integrally formed.

Specifically, the mounting portion 14 has a substantially disc shape, and the upper surface thereof is the mounting surface 8 on which the optical disk 2 is mounted.
It is a. Further, a flexible material such as rubber is provided on the mounting surface 8a over the entire circumference so that the friction with the mounted optical disk 2 is increased. Here, a film-shaped rubber member 17 is attached to the outer peripheral portion of the mounting surface 8a.
Are formed in a ring shape corresponding to the outer peripheral portion of the mounting surface 8a.

The center cap mounting recess 15 is bulged from the central portion of the mounting portion 14 toward the side opposite to the mounting surface 8a, and has an inner shape corresponding to the center cap 9. . Further, a substantially cylindrical first spring receiving portion 18 in which the first compression coil spring 10 is fitted and held is integrally formed with a bottom surface at the center of the bottom surface of the center cap mounting recess 15. . Further, on the inner side surface of the center cap mounting recess 15, a plurality of restricting projections 19 are provided for restricting the movement of the center cap 9 in a direction projecting from the mounting surface 8a of the turntable 8. The plurality of regulating protrusions 19 are provided on the center cap 9
Corresponding to the outer peripheral portion of the center cap 9, the outer peripheral portion of the center cap 9 is formed so as to project at a boundary position with the mounting surface 8a that divides the outer peripheral portion into three equal parts.

The supporting portion 16 is formed so as to project from the central portion of the bottom surface of the spring receiving portion 18 toward the side opposite to the mounting surface 8a. In addition, a through hole 20 is formed in the center of the support 16 so that the rotary shaft 4a of the spindle motor 4 penetrates therethrough. The turntable 8 has the support portion 16
The rotary shaft 4a of the spindle motor 4 is fixedly supported by the rotary shaft 4a of the spindle motor 4 by being inserted into the through hole 20 by press-fitting or the like. Therefore, the turntable 8 can be rotated by the driving force of the spindle motor 4.

In the disc chucking mechanism 3, the center cap 9 serves to center the optical disc 2 mounted on the mounting surface 8a of the turntable 8 as shown in FIGS. 2, 3 and 4. It has an outer shape corresponding to the center hole 2a of the optical disc 2 and is provided so as to project from the rotation center of the turntable 8.

Further, the center cap 9 has a plurality of guide piece portions 21 which respectively hang down toward the center cap mounting recess 15 at positions where the outer peripheral portion of the center cap 9 is divided into three equal parts. In addition, stopper projections 22 that are engaged with the above-described restriction projections 19 of the turntable 8 are provided at the tips of the plurality of guide piece portions 21, respectively.
Are formed so as to project outward.

The center cap 9 is shown in FIG.
As shown in FIGS. 4 and 5, a plurality of chuck claws 1 are provided inside.
The chuck claw housing recess 23 for housing 1 and the support part 24 supported by the rotary shaft 4a of the spindle motor 4 are formed integrally in the bottom center of the chuck claw housing recess 23. It becomes.

Specifically, the chuck claw housing recess 23 has a plurality of holding portions 25, each of which is located in the middle of the adjacent guide piece 21, and holds the chuck claw 11.
Each of the plurality of holding portions 25 has a shape corresponding to a chuck claw 11 described later. In addition, a plurality of notches 26 are formed on the outer peripheral portion of the center cap 9 for projecting the chuck claws 11 held by the holding portions 25 of the chuck claw housing recesses 23 to the outside.
Further, on both sides of these notches 26, a pair of restricting pieces 27 are formed to restrict the movement of the chuck claws 11 in the direction projecting from the outer periphery of the center cap 9.

On the other hand, as shown in FIGS. 2 to 5, the chuck claw 11 has a notch 26 in the center cap 9.
A protrusion 28 protruding from the protrusion 28, a pair of stopper pieces 29 on both sides of the protrusion 28, and a positioning protrusion 30 on the opposite side of the protrusion 28 are integrally formed.

Specifically, the protrusion 28 is provided when the optical disk 2 is mounted on the mounting surface 8a of the turntable 8.
The first inclined surface 28a, which is pressed in the direction of being pushed into the center cap 9 by being brought into sliding contact with the inner peripheral portion of the optical disk 2, and the mounting surface 8 of the turntable 8
When removing the optical disc 2 placed on a, the second slanted surface 28b, which is pressed in the direction of being pushed into the center cap 9 by being brought into sliding contact with the inner peripheral portion of the optical disc 2, is removed. Have In other words, the protrusion 28 includes the first inclined surface 28a and the second inclined surface 28b.
Are formed in a wedge shape by and. The protrusion 28
Is not limited to such a wedge-shaped protrusion and may be, for example, a hemispherical protrusion.

The pair of stopper pieces 29 are the protrusions 28.
Has a shape in which it is extended from both sides in the width direction and both ends thereof are bent substantially perpendicularly to the side opposite to the protruding portion 28. In addition, a pair of stopper protrusions 31 that are engaged with the pair of restricting piece portions 27 of the center cap 9 described above are formed at both ends of the pair of stopper piece portions 29 so as to project outward.

The positioning protrusion 30 is formed in a substantially columnar shape from the opposite side of the protrusion 28, and is fitted into the second compression coil spring 12 so that the second compression coil spring 12 with respect to the chuck claw 11 is inserted. Perform positioning.

In the center cap 9, as shown in FIGS. 2 and 4, the support portion 24 has a rotary shaft 4 of the spindle motor 4 extending from the center of the bottom surface of the chuck claw accommodating recess 23.
It is formed so as to project toward a, and an insertion hole 32 through which the rotary shaft 4a of the spindle motor 4 is inserted is formed in the center portion thereof.
Has been drilled. Further, a second spring receiving portion 33 into which the second compression coil spring 12 is fitted and held is formed at the base end portion of the support portion 24. Further, guide portions 34 that project from the base end portion to the tip end portion of the support portion 24 are formed at positions where the outer peripheral portion of the support portion 24 is divided into three equal parts.

In the disc chucking mechanism 3, the lid 13 has an outer shape corresponding to the above-mentioned center cap mounting recess 15 as shown in FIGS. An insertion hole 35 is formed in which the support portion 24 of the center cap 9 is inserted. In addition, a plurality of guide grooves 36 that are respectively engaged with the guide portions 34 of the support portion 24 are formed in the insertion hole 35. In addition, a plurality of pressing portions 37 for pressing and holding the second compression coil spring 12 in the holding portion 25 of the center cap 9 are formed on the lid 13 in a protruding manner.

In the disk chucking mechanism 3, the plurality of chuck claws 11 are held by the holding portion 25 of the chuck claw accommodating recess 23 so that the protrusion 28 projects from the notch 26 of the center cap 9. In the chuck claw housing recess 23, one end of the second compression coil spring 12 is fitted into the positioning projection 30 of the chuck claw 11, and the other end is the second spring receiving portion 33 of the center cap 9.
The second compression coil spring 12 is held in a compressed state between the center cap 9 and the chuck claw 11 by being inserted into the.

On the other hand, the chuck claw 11 is urged by the elastic force of the second compression coil spring 12 in the direction in which the protrusion 28 protrudes from the notch 26 of the center cap 9, and the pair of restriction protrusions of the center cap 9 are provided. By locking the pair of stopper protrusions 31 to the portion 27, the movement of the center cap 9 in the direction of protruding from the outer peripheral portion is restricted. Therefore, in the disc chucking mechanism 3, the plurality of chuck claws 11 can be pushed into the center cap 9 by being pressed.

In the disk chucking mechanism 3, a plurality of chuck claws 11 and the second compression coil spring 1 are used.
A lid 13 is attached to the center cap 9 so as to close the chuck claw storage recess 23 in which 2 is stored. Specifically, the lid 13 is positioned with respect to the center cap 9 by the engagement of the plurality of guide grooves 36 and the guide portion 34, and the support portion 24 of the center cap 9 is provided.
With the insertion hole 35 inserted in the center cap 9
Are attached so as to seal the.

The center cap 9 to which the lid 13 is attached is projected from the center of rotation of the turntable 8 with the rotary shaft 4a of the spindle motor 4 inserted through the insertion hole 28 of the support 24. The turntable 8 is mounted in the center cap mounting recess 15. Also, the center cap mounting recess 15
Then, one end of the first compression coil spring 10 is fitted into the support portion 24 of the center cap 9 and the other end is fitted into the first spring receiving portion 18 of the turntable 8, so that the first compression coil spring 10 is compressed. The coil spring 10 is held in a compressed state between the center cap 9 and the turntable 8.

On the other hand, the center cap 9 has a support portion 24.
By inserting the rotation shaft 4a of the spindle motor 4 into the insertion hole 28 of the spindle motor 4, the rotation shaft 4a of the spindle motor 4 in the axial direction, that is, the mounting surface 8a of the turntable 8 is inserted.
It is slidably supported in a direction orthogonal to the. As a result, the disk chucking mechanism 3 can accurately perform centering on the optical disk 2 mounted on the mounting surface 8a of the turntable 8, and the center cap 9 is provided along the rotation shaft 4a of the spindle motor 4. It can be moved smoothly.

The center cap 9 is urged by the elastic force of the first compression coil spring 10 in a direction projecting from the mounting surface 8a of the turntable 8, and the plurality of regulating projections 19 of the turntable 8 are provided. By locking a plurality of stopper protrusions 22 on the turntable 8
The movement in the direction of protruding from the mounting surface 8a is restricted. Therefore, in the disc chucking mechanism 3, the center cap 9 can be pushed into the turntable 8 by pressing the center cap 9.

In this disc drive device 1, the spindle motor 4 is for rotatably driving the optical disc 2 mounted on the mounting surface 8a of the turntable 8 as shown in FIG. It is attached to the apparatus main body (not shown) so as to penetrate the chassis 7.

The optical pickup 5, as shown in FIG.
An optical system (not shown) for irradiating the optical disc 2 with a laser beam is provided, and the laser beam emitted from this optical system is recorded on the surface facing the optical disc 2 as a signal of the optical disc 2. An objective lens 38 for condensing light on the surface is provided. The optical pickup 5 also includes a biaxial actuator (not shown) that displaces the objective lens 38 in the optical axis direction of the objective lens 38 and in a direction substantially orthogonal to the optical axis direction of the objective lens 38. There is.

The optical pickup 5 is mounted on a feed base 39 which is moved and operated by the pickup feed mechanism 6. On the other hand, the chassis 7 is formed with an opening 7a through which the optical pickup 5 attached to the feeding base 39 faces. The opening 7a corresponds to the movable range of the optical pickup 5 and corresponds to the optical disc 2
Is formed in a substantially rectangular shape along the radial direction.

As shown in FIG. 1, the pickup feed mechanism 6 has a guide shaft 40 that supports the feed base 39 movably in the radial direction of the optical disc 2. The guide shaft 40 is formed of a long columnar member, is arranged substantially parallel to the radial direction of the optical disc 2, and both ends thereof are fixedly supported by the chassis 7 by screwing or the like.

On the other hand, the feed base 39 has a first support piece 42 having a guide hole 41 inserted into the guide shaft 40 and an end portion of the chassis 7 forming the opening 7a. Two supporting pieces 43 are formed so as to project from both end portions facing each other. Therefore, the feed base 39 is provided with the guide shaft 40 and the guide hole 4 of the first support piece 42.
1 is slid together with the chassis 7 and the second support piece 4
By sliding 3 and 3, the optical disc 2 is supported so as to be movable in the radial direction shown by the arrow B in FIG.

The feed base 39 is moved and operated in the radial direction of the optical disc 2 by the driving force of the drive motor 44 provided on the chassis 7. Specifically, the rack portion 45 is formed on the first support piece 42 of the feed base 39 along the axial direction of the guide shaft 40, and the drive motor 4
A first gear 46 is attached to the rotating shaft of No. 4. A second gear 47 meshed with the first gear 46 is provided between the rack portion 45 and the first gear 46.
A third gear 48 located coaxially with the second gear 47, and a fourth gear 49 meshing with the third gear 48 and the rack portion 45. The fourth gears 47, 48, 49 are rotatably supported on the chassis 7 via a support shaft.

Therefore, this pickup feed mechanism 6
Then, when the drive motor 44 is rotationally driven, the rack portion 45 meshed with the fourth gear 49 while the rotation speed is adjusted by the first to fourth gears 46, 47, 48, 49 meshed with each other. Are moved in the axial direction of the guide shaft 40.
Along with this, the optical pickup 5 together with the feed base 39
Is moved in the radial direction of the optical disc 2 shown by the arrow B in FIG.

In the disk drive device 1 configured as described above, when the optical disk 2 is mounted on the mounting surface 8a of the turntable 8, first, as shown in FIG. 6 and FIG. With the hole 2a fitted in the center cap 9, the optical disk 2 is pressed toward the mounting surface 8a of the turntable 8. At this time, the plurality of chuck claws 11 are, as shown in FIGS. 8 and 9, the inner peripheral portion of the optical disc 2 and the first inclined surface 28a of the protrusion 28.
The first slanted surface 28a is pressed by the sliding contact between and, and is pushed into the center cap 9. Then, as shown in FIGS. 10 and 11, the plurality of chuck claws 11 are pushed into the center cap 9 and then protrude from the notches 26 of the center cap 9 so that the turntable 8 is mounted. Surface 8
The inner peripheral portion of the optical disc 2 placed on a is held. That is, the plurality of chuck claws 11 are in a state where the inner peripheral portion of the optical disc 2 and the second inclined surface 28b of the protrusion 28 are in contact with each other. Thereby, the optical disc 2 can be placed on the placing surface 8a of the turntable 8.

In this disk drive device 1, when the optical disk 2 mounted on the mounting surface 8a of the turntable 8 is rotationally driven by the spindle motor 4, the pickup feed mechanism 6 causes the optical pickup 5 to move the optical pickup 5 to the optical disk 2.
This optical pickup 5 while being fed in the radial direction of
Thus, recording and / or reproduction of a signal is performed on the optical disc 2. Specifically, the optical pickup 5 is moved by the pickup feeding mechanism 6 over the inner and outer circumferences of the optical disc 2, and the signal recording surface of the optical disc 2 is
By irradiating the laser light focused by the objective lens 38, recording and / or reproduction of a signal is performed.

On the other hand, in the disc drive device 1, when the optical disc 2 mounted on the mounting surface 8a of the turntable 8 is removed, first, the center cap 9 is pressed toward the mounting surface 8a of the turntable 8. To do. At this time, as shown in FIGS. 12 and 13, the plurality of chuck claws 11 are arranged such that the inner peripheral portion of the optical disc 2 and the protrusion 28
When the second slanted surface 28b is in sliding contact with the second slanted surface 28b, the second slanted surface 28b is pressed and pushed into the center cap 9. This makes the turntable 8
The holding state for the optical disc 2 placed on the placing surface 8a of is released. Then, these plurality of chuck claws 1
As shown in FIG. 14 and FIG. 15, the reference numeral 1 indicates the center cap 9 after the holding state for the optical disc 2 is released.
From the notch 26.

Next, the pressure on the center cap 9 is released. At this time, the plurality of chuck claws 11 are
As shown in FIG. 17, the inner peripheral portion of the optical disc 2 and the first inclined surface 28a of the protrusion 28 are brought into sliding contact with each other to push the optical disc 2 upward in a direction away from the mounting surface 8a of the turntable 8. As a result, the optical disk 2 placed on the placement surface 8a of the turntable 8 can be removed.

As described above, in this disc drive device 1, by pressing the center cap 9,
It is possible to easily remove the optical disk 2 mounted on the mounting surface 8a of the turntable 8 without touching the optical disk 2.

Therefore, this disk drive device 1
Then, since it is possible to easily remove the optical disc 2 without giving a load to the conventional optical disc such that the optical disc is pushed up while being warped in a direction away from the mounting surface of the turntable, further convenience is improved. Therefore, it is possible to protect the optical disc 2.

By the way, as a disk chucking device for easily removing a disk, for example, Japanese Patent Laid-Open No.
In the disk chucking device described in Japanese Patent Laid-Open No. 0-322799, a separating member for separating the disk from the mounting surface of the turntable is provided, and the centering member (corresponding to the center cap 9) is pressed, It has been proposed that this detaching member is projected from the mounting surface of the turntable, and the disc holding state by the holding member (corresponding to the chuck claw 11) is released while pushing up the disc.

However, in this case, in addition to the holding member for holding the disc, it is necessary to newly provide a detaching member for detaching the disc from the mounting surface of the turntable, so that the overall size of the apparatus can be reduced. It will be very disadvantageous above.

On the other hand, in the disk chucking device to which the present invention is applied, it is not necessary to newly provide such a detaching member or the like, and the chuck claw 11 is mounted on the mounting surface 8a of the turntable 8. The optical disc 2 has a function of holding the loaded optical disc 2 and a function of removing the optical disc 2 placed on the placement surface 8a of the turntable 8. As a result, it is possible to further reduce the number of parts,
Placement surface 8a of the turntable 8 with a simple structure
It is possible to easily remove the optical disk 2 placed on it.

The present invention is not limited to the disc drive device 1 for recording and / or reproducing a signal on the optical disc 2 described above, but a magnetic head for recording a signal is arranged at a position facing the optical pickup. By providing the same, it is also applicable to a disk drive device for recording and / or reproducing a signal on a magneto-optical disk.

Further, the present invention is not limited to the above-mentioned disk drive device, but can be widely applied to a form in which the rotating body is detachably attached to the rotating shaft. For example, the present invention can be applied to a wheel attachment / detachment portion of an automobile or a bicycle.

[0061]

As described in detail above, according to the present invention, by pressing the centering portion, the disc mounted on the mounting surface of the turntable can be easily removed without touching the disc. Therefore, it is possible to further improve convenience.

[Brief description of drawings]

FIG. 1 is a schematic perspective view showing a configuration example of a disk drive device to which the present invention is applied.

FIG. 2 is an exploded perspective view showing a disk chucking mechanism that constitutes the disk drive device.

FIG. 3 is a perspective plan view showing a disk chucking mechanism constituting the disk drive device as seen from a mounting surface side.

FIG. 4 is a sectional view taken along line X-X ′ in FIG.

FIG. 5 is a perspective plan view of a disk chucking mechanism constituting the disk drive device as seen from the side opposite to the mounting surface.

FIG. 6 is a diagram for explaining an operation when the optical disc is mounted on the mounting surface of the turntable in the disc drive device, showing a state in which the optical disc is pressed toward the mounting surface of the turntable. It is a perspective plan view shown.

7 is a cross-sectional view taken along the line segment X ₁ -X ₁ 'in FIG.

FIG. 8 is a diagram for explaining an operation when the optical disc is mounted on the mounting surface of the turntable in the disc drive device, in which a plurality of chuck claws are pushed into the center cap. It is a perspective plan view showing.

It is a sectional view according to FIG. 9 8 in the line _{X 2} -X 2 '.

FIG. 10 is a view for explaining the operation when the optical disc is placed on the placement surface of the turntable in the disc drive device, in which a plurality of chuck claws are placed on the placement surface of the turntable. FIG. 6 is a perspective plan view showing a state of holding the inner peripheral portion of the formed optical disc.

11 is a sectional view taken along the line segment X ₃ -X ₃ ′ in FIG.

FIG. 12 is a view for explaining the operation when the optical disk mounted on the mounting surface of the turntable is removed in the disk drive device, in which a plurality of chuck claws are pushed into the center cap. FIG. 3 is a perspective plan view showing a closed state.

13 is a sectional view taken along the line segment X ₄ -X ₄ ′ in FIG.

FIG. 14 is a diagram for explaining the operation when the optical disc mounted on the mounting surface of the turntable is removed in the disc drive device, and is a perspective plan view showing a state in which the pressure on the center cap is released. Is.

15 is a cross-sectional view taken along the line segment X ₅ -X ₅ ′ in FIG.

FIG. 16 is a view for explaining the operation when the optical disc mounted on the mounting surface of the turntable is removed in the disc drive device, in which a plurality of chuck claws mount the optical disc on the mounting surface of the turntable. FIG. 6 is a perspective plan view showing a state in which it is pushed up in a direction away from.

17 is a sectional view taken along the line segment X ₆ -X ₆ ′ in FIG.

FIG. 18 is a perspective plan view showing a conventional disk chucking device as viewed from the mounting surface side.

FIG. 19 is a cross-sectional view taken along the line segment Y-Y ′ in FIG. 18.

FIG. 20 is a perspective plan view of the conventional disk chucking device as viewed from the side opposite to the mounting surface.

[Explanation of symbols]

1 disk drive device, 2 optical disk, 2a center hole, 3 disk chucking mechanism, 4 spindle motor, 5 optical pickup, 6 pickup feeding mechanism, 7 chassis, 8 turntable, 8a mounting surface, 9 center cap, 10 1st Compression coil spring, 11 chuck claws, 12 second compression coil spring,
13 lid, 26 notch, 28 protrusion, 28a first inclined surface, 28b second inclined surface

Claims (8)

[Claims] 1. A turntable which has a mounting surface on which a disk having a central hole is mounted, and which is rotationally driven, and which is projected from the rotation center of the turntable and mounted on the mounting surface of the turntable. The centering of the disc is performed by fitting the centering hole of the placed disc, and the centering part is pushed into the turntable by being pressed, and protrudes from the outer periphery of the centering part. And a chuck portion that is pushed into the centering portion by being pressed, and the chuck portion is configured so that when the disc is mounted on the mounting surface of the turntable, While being in sliding contact with the peripheral part, it is pushed into the centering part and then protrudes from the outer peripheral part of the centering part. By holding the disc fitted in the centering portion on the mounting surface of the turntable and removing the disc mounted on the mounting surface of the turntable, the centering portion is By pressing, it is pushed into the inside of the centering portion while making sliding contact with the inner peripheral portion of the disc, and after releasing the holding state with respect to the disc, it projects from the outer peripheral portion of the centering portion and presses against the centering portion. The disk chucking device is characterized in that the disk is pushed up in a direction of separating from the mounting surface of the turntable by releasing. 2. The chuck portion slides into contact with the inner peripheral portion of the disc when the disc is placed on the placing surface of the turntable, and thereby the chuck portion is brought into the centering portion. First to be pushed in the pushing direction
When removing the inclined surface of the disc and the disc mounted on the mounting surface of the turntable, the disc is slidably contacted with the inner peripheral portion of the disc so that the disc is pushed into the centering portion. The disk chucking device according to claim 1, further comprising a second inclined surface that is pressed. 3. The disk chucking device according to claim 1, wherein a plurality of the chuck portions are arranged on the outer peripheral portion of the centering portion at substantially equal intervals. 4. The centering portion is provided so as to be slidable in the axial direction of the rotary shaft by being inserted into the rotary shaft of a drive motor that rotationally drives the turntable. 1. The disk chucking device according to 1. 5. A disk chucking mechanism for chucking a disk having a central hole, a disk rotation drive mechanism for rotationally driving a disk chucked by the disk chucking mechanism, and a rotary drive for the disk rotation drive mechanism. And a recording / reproducing mechanism for recording and / or reproducing a signal to and from the disc, wherein the disc chucking mechanism has a mounting surface on which the disc is mounted, and is rotated by the disc rotation drive mechanism. The driven turntable and the center hole of the disk that is projected from the rotation center of the turntable and is mounted on the mounting surface of the turntable are fitted to center the disk. , The center that is pushed into the turntable. And a chuck portion that is protruded from the outer peripheral portion of the centering portion and is pushed into the centering portion by being pressed, and the chuck portion is configured to mount the disc on the turntable. When it is placed on the surface, it is fitted into the centering portion by being pushed into the centering portion while slidingly contacting the inner peripheral portion of the disc and then protruding from the outer peripheral portion of the centering portion. When the disk is held on the mounting surface of the turntable and the disk mounted on the mounting surface of the turntable is removed, the centering portion is pressed to press the inner peripheral portion of the disk. After being pushed into the inside of the centering part while making sliding contact with the A recording and / or reproducing apparatus, characterized in that the disk is pushed up in a direction away from the mounting surface of the turntable by projecting from the outer peripheral portion of the centering portion and releasing the pressure on the centering portion. 6. The chuck portion is slidably contacted with an inner peripheral portion of the disc when the disc is placed on the placement surface of the turntable, and thus the chuck portion is moved into the centering portion. First to be pushed in the pushing direction
When removing the inclined surface of the disc and the disc mounted on the mounting surface of the turntable, the disc is slidably contacted with the inner peripheral portion of the disc so that the disc is pushed into the centering portion. The recording and / or reproducing apparatus according to claim 5, further comprising a second inclined surface that is pressed. 7. The recording and / or reproducing apparatus according to claim 5, wherein a plurality of the chuck portions are arranged on the outer peripheral portion of the centering portion at substantially equal intervals. 8. The disk rotation drive mechanism includes a drive motor that rotationally drives the turntable, and the centering portion is inserted into a rotation shaft of the drive motor so as to move in an axial direction of the rotation shaft. The recording and / or reproducing apparatus according to claim 5, wherein the recording and / or reproducing apparatus is provided so as to be slidable.