JP2002032945A - Disk device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve the problem that it is difficult to make a disk device thin because of the necessity of increasing a height dimension for moving a clamp arm in a clamp mechanism using the clamp arm. SOLUTION: When a disk D is inserted from an insertion slot 13, and transferred in an inserting direction by a transfer means 17, the disk D is inserted between the loading surface 21 of a tray 20 and a clamping board 31. Moreover, when the disk D is sent in the inserting direction, the clamping board 31 is elastically deformed in a Z1 direction, and the disk D is slipped into the lower part of a clamper 32. When the disk D is abutted on the projected abutting surface of the tray 20, the clamper 32 is inserted into the center hole D1 of the disk D, and the disk D is held in the tray 20. Thus, since the moving amount of the clamper 32 is reduced, the disk device is made thin.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk device on which a CD (compact disk), a DVD (digital versatile disk) and the like are loaded, and more particularly to a disk device which can be made thinner.

[0002]

2. Description of the Related Art FIGS. 7A and 7B are side views showing a schematic structure of an in-vehicle CD player as an example of a conventional disk drive, wherein FIG. 7A shows an unclamped state and FIG.

In this CD player, a slit-shaped insertion opening 2 is opened in a nose portion provided on the front surface of the housing 1, and a disk D is inserted into the housing 1 from the insertion opening 2. A feed roller 4 and a roller support member 3 that supports the feed roller 4 are provided inside the insertion slot 2, and a guide member 5 is provided above the feed roller 4. The disk D inserted from the insertion slot 2 is sandwiched between the feed roller 4 and the guide member 5 and is sent into the housing 1 by the rotational force of the feed roller 4.

A support base 6 elastically levitated and supported by a damper or the like is provided in the housing 1. The support base 6 has a spindle motor M, a turntable T driven to rotate by the spindle motor M, and An optical head (not shown) and the like are mounted, and these constitute a disk drive unit. A clamp arm 7 is rotatably supported on a support base 6 via a support shaft 9, and a clamper 8 for installing and clamping a disk D on a turntable T is rotatably provided at the tip of the clamp arm 7. Supported.

When the disc D is inserted from the insertion slot 2, the disc sandwiched between the feed roller 4 and the guide member 5 is fed into the housing 1. And FIG. 7 (B)
When the disc D is conveyed to a predetermined position on the support base 6 and detected as shown in FIG. 7, the clamp arm 7 rotates clockwise, and the center of the disc D is set on the turntable T by the clamper 8. Clamped. Then, the spindle motor M rotates, the disk D is driven to rotate by the turntable T, and a signal recorded on the disk D is read by an optical head (not shown).

[0006]

In the above structure, when the disk D is transported onto the turntable T and when the disk D is returned from the turntable T to the insertion slot 2,
It is necessary to rotate the clamp arm 7 in the counterclockwise direction to raise the clamper 8 to the non-clamp position shown in FIG. Therefore, the dimension in the height direction is increased by the thickness of the clamper 8 and the clamp arm 7. FIG. 7 (A)
As shown in (1), since the clamp arm 7 is structured to be lifted in an oblique posture, the height dimension H required for the clamp arm 7 and the clamper 8 to move up and down becomes large, and the height dimension in the housing 1 is increased. It is necessary to provide a margin for H.

Therefore, the thickness of the disk device cannot be reduced, and in the case of a disk device in which one disk is loaded, the height of the housing 1 becomes unnecessarily large. Also, in a disk device in which a plurality of disks are loaded in a housing,
It is necessary to further add the height H to the dimension in the direction in which the disks are arranged, which limits the number of disks that can be stored in the housing 1.

Further, since a mechanism for rotating the clamp arm 7 is required in the housing 1, the number of components of the mechanism in the housing 1 is increased.

An object of the present invention is to solve the above-mentioned conventional problems, and it is an object of the present invention to provide a disk device which can be made thin by minimizing the height of a disk clamp mechanism.

It is another object of the present invention to provide a disk drive capable of minimizing mechanical parts for clamping a disk.

[0011]

According to the present invention, there is provided a disk apparatus provided with a disk holding member and a turntable fitted in a center hole of the disk held by the disk holding member. The holding member is provided with a mounting surface that supports a part of the surface of the disk, and a clamper. When the disk is supplied on the mounting surface, the clamper fits into the center hole of the disk. The disk can be held between the mounting surface and the clamper. When the disk is driven, the disk is sandwiched between the turntable and the clamper, and the disk can be rotationally driven at a position away from the mounting surface. It is characterized by the following.

In the present invention, the clamper is incorporated in the disc holding member, and the clamper fits into the center hole of the disc when the disc is supplied to the disc holding member. Therefore, a mechanism for raising and lowering the clamper is unnecessary,
The mechanism can be made thinner, and the number of parts constituting the mechanism can be reduced.

It is preferable that the clamper is formed with a tapered surface that generates a component force in a direction away from the mounting surface by the force of feeding the disk.

By forming the tapered surface, the clamper can be fitted into the center hole of the disk only by feeding the disk onto the disk holding member.

It is preferable that the turntable and the clamper are fitted by magnetic attraction.
By using the magnetic attraction force, the disk clamp can be completed only by bringing the turntable into contact with the clamper.

Further, in the disk holding member, the clamper is supported by an elastically deformable support, and the supporter is elastically deformed, so that the clamper can move in a direction away from the mounting surface. It is possible.

By supporting the clamper on the elastically deformable support as described above, the clamper can freely move in a direction away from the mounting surface. As a biasing means for biasing the clamper, a spring member for elastically pressing the clamper may be provided, or a magnet may be provided on the clamper, and the clamper may be attracted to a metal portion on the disk holding member by adsorbing the clamper. May be urged toward the mounting surface.

Further, the disk holding member is movable in the apparatus while holding the disk, and by this movement, the disk holding member moves the disk to a standby position or a disk drive position where the turntable is disposed. May be moved.

Since the disk is held by the clamper on the disk holding member, the disk does not fall off when the disk holding member is moved.

Further, it is preferable that a disk transfer means for supplying a disk to the disk holding member is provided. In this case, the disk holding member may be moved by a transfer force applied to the disk from the disk transfer means.

[0021]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings.

FIG. 1 is a plan view showing a disk device of the present invention, FIG. 2 is a perspective view showing a first embodiment of a tray and a clamper, and FIG. 3 is a cross-sectional view of the disk device shown in FIG. (A) is a state immediately after the disk is inserted, (B) is a state where the disk is moving in the tray,
(C) shows a state where the disc is positioned in the tray. FIG. 4 shows the IV in the disk drive of FIG.
FIG. 14 is a cross-sectional view taken along the line IV, wherein FIG.
(B) shows the clamped state.

The disk device 10 shown in FIG.
And a nose portion 12 provided at the front on the Y2 side in the figure. The nose portion 12 is molded from a synthetic resin or the like,
The housing 11 is fixed to the illustrated Y2 side. The nose portion 12 has a slot 13 into which a disc D is inserted.

An inner housing 15 is provided inside the housing 11, and is elastically supported on the housing 11 through elastic members 14, 14, 14, 14, such as oil dampers and coil springs. Have been. Guide grooves 15a, 15b extending in the illustrated Y direction are formed on both side surfaces 15A, 15B of the inner casing 15, and the guide grooves 15
A part of a disk drive member to be described later is slidably inserted into a and 15b.

A pair of feed roller 17a and driven roller 1
7b is provided. The transfer means 17 may be constituted by a combination of a feed roller 17a and a guide member. In the transfer means 17, when the disk D is driven by a disk drive unit to be described later, the facing distance between the feed roller 17a and the driven roller 17b is widened, and the transfer force to the disk is cut off. When the disk D is transported, the positional relationship between the rollers is controlled so that the interval between the rollers is reduced so that the disk is nipped.

Behind the transfer means (Y1 direction), a tray 20 as a disk holding member and a clamp member 30
Is provided. The tray 20 is formed from a synthetic resin or the like. As shown in FIG.
Is a so-called half-type tray on which a mounting surface 21 capable of supporting only about half of the entire area of the disk D is formed. At the center of the tray 20 (the portion facing the center hole D1 of the disk D), a semicircular defect 2
2 are formed, and a turntable 43 to be described later can enter. At the edge of the mounting surface 21 of the disk D, there are formed steps 23, 23 having dimensions slightly higher than the thickness of the disk D.
The inner surfaces of the discs 3 and 23 are abutting surfaces 24 and 24 having substantially the same shape as the outer peripheral shape of the disk D.

The clamp member 30 is a clamp plate 31 which is an elastically deformable support formed of a thin leaf spring.
And a clamper 3 provided at the center of the clamp plate 31.
And 2. The clamp plate 31 is elastically deformable in a plate thickness direction (Z direction: direction of the mounting surface 21) which is a direction crossing the recording surface of the disk D, and both ends thereof are stepped portions 23, 23 of the tray 20. It is fixed to.

The clamper 32 is rotatably supported in a round hole formed in the clamp plate 31, and a flange 32d formed on the outer periphery of the clamper 32 is
1 is installed on the upper surface. As shown in FIG. 3, a support member 25 is provided on the upper surface of the clamp plate 31, and the support member 25 is opposed to the upper surface of the clamp plate 31 with a gap therebetween. , Between the upper surface of the clamp plate 31 and the support member 25 so as to be rotatable with some allowance for vertical movement.

The clamper 32 has a projection 32a projecting in the Z2 direction in the figure, and the projection 32a is inserted into the round hole of the clamp plate 31. The convex part 32
A fitting recess 32b is formed at the lower end of a. A tapered surface 32c is provided around the convex portion 32a.

At both ends of the clamp plate 31, the support portions 31 projecting in both side directions (X1 direction and X2 direction) are provided.
a, 31b, 31c and 31d are formed. The support portions 31a, 31b, 31c and 31d are provided on the side surfaces 15A and 15B of the internal housing 15 in the guide grooves 15
a, 15b. And the tray 2
0 is guided by the guide grooves 15a and 15b, and can be conveyed in the illustrated insertion direction (Y1 direction) and the ejection direction (Y2 direction). The insertion port 13 side in the Y2 direction shown in FIG. 1 is the standby position of the tray 20, and the back side of the apparatus moved in the Y2 direction is the play position (drive position) of the tray 20.

Inside the housing 11, there is provided a conveying means for conveying the tray 20 in the inserting direction and the discharging direction. In the transporting means, for example, a locking member 45 for locking the support portions 31c and 31d of the clamp plate 31 is provided, and the tray 20 is locked by the locking member 45 and moved in the inserting direction and the discharging direction. Can be

As shown in FIGS. 1 and 4 (A) and (B), the disc drive 40
Is provided. The disk drive unit 40 includes a lifting base 41 and a driving motor 4 mounted on the lifting base 41.
2, a turntable 43 fixed to the motor shaft 42a of the drive motor 42, a pickup mechanism 50 that moves in the radial direction of the disk D, and the like. The disk drive unit 40 can be moved in the Z1 direction and the Z2 direction by a lifting unit (not shown).

At the center of the support portion 43a of the turntable 43, a fitting projection 43b inserted into a center hole (positioning hole) D1 of the disk D is formed so as to protrude. Then, as shown in FIG. 4B, the fitting projection 43b is
The disc D can be fitted into the fitting recess 32b of the clamper 32 with the disc D placed on the turntable 43. Further, a magnet is buried in the turntable 43, the clamper 32 is made of metal or a resin in which metal is built inside, and the turntable 43 and the clamper 32 are fitted by magnetic attraction. .

Further, as shown in FIG.
1, a guide member 51 and a screw shaft 52 extending in the radial direction are arranged in parallel. A head base 53 is supported between the guide member 51 and the screw shaft 52, and a head mechanism having an objective lens and the like is mounted on the head base 53. When the screw shaft 52 is rotated by a feed motor (not shown), the head base 53 moves in the radial direction.

The operation of the disk device will be described below. (Disc Insertion Operation) As shown in FIG. 1, when the disc D is inserted through the insertion slot 13, a detecting means (not shown) provided inside the housing 11 detects the insertion of the disc D. This detection signal is transmitted to a control unit (not shown) also provided inside the housing, and the transfer means 17 is driven. That is, the disk D is sandwiched between the feed roller 17a of the transfer means 17 and the driven roller 17b,
The feed roller 17a is moved in the insertion direction (Y1 direction) by a rotational force applied to the feed roller 17a.

As shown in FIG. 3A, the disk D is inserted into the tray 20 through a gap between the mounting surface 21 of the tray 20 and the clamp plate 31. As shown in FIG. 3 (A), when the edge of the disk D comes into contact with the tapered surface 32c on the outer periphery of the clamper 32, it moves downward (Z2 direction) along the tapered surface 32c as shown in FIG. 3 (B). The disk D moves and sinks below the clamper 32. As a result, a lifting force acts on the clamper 32 in the non-clamp direction (Z1 direction), and the clamp plate 31 is bent and deformed in the Z1 direction. When the disc D is further fed in the insertion direction,
As shown by the dashed line in FIG. 1, the tip of the disc D (the edge in the insertion direction) contacts the abutting surfaces 24, 24 of the tray 20. At this time, as shown in FIG.
Is inserted into the center hole D1 of the disk D, so that the clamp plate 30 is returned to the original state.

Thus, the disk D can be positioned on the tray 20. Then, the disk D is held in the tray 20 by the mounting surface 21 and the clamper 32.

When the positioning of the disk D is detected, the rotation of the feed roller 17a is stopped, and the distance between the feed roller 17a and the driven roller 17b is increased to open the disk D.

Further, the control section transports the tray 20 holding the disk D in the insertion direction via the transport means.
That is, the locking member 45 is moved in the Y1 direction, and the tray 20 is transported from the standby position to the play position on the inner side of the apparatus (the Y1 side in the drawing).

(Play Operation) As shown in FIG.
A disk drive unit 40 is on standby below the tray 20 transported to the play position. As shown in FIG. 4B, the control unit drives a lifting unit (not shown) to raise the disk drive unit 40 by a predetermined height in the Z1 direction approaching the tray 20. At this time, the turntable 43 enters the defective portion 22 of the tray 20. Further, the fitting convex portion 43b of the turntable 43 is fitted into the fitting concave portion 32b of the clamper 32, and the turntable 43 and the clamper 32 are coupled by magnetic attraction.

At this time, the disk D is mounted on the turntable 4
3 supported by the support portion 43a of FIG.
It is lifted in one direction by a predetermined gap dimension δ1. A gap dimension δ2 is formed between the upper surface of the disk D and the clamp plate 31. Therefore, the disk D is placed in the tray 20
It is supported while floating inside. At this time, the flange portion 32d of the clamper 32 is located between the clamp plate 31 and the support member 25 so as not to hit the support member 25.

In the above disk device, the disk D is provided only by providing a clearance h above the clamp plate 31 by a dimension necessary for the clamp plate 31 to bend and deform in the Z1 direction.
Can be held inside the tray 20. That is, a large height dimension for moving the clamper up and down as in the related art is not required. Therefore, the thickness of the disk device can be reduced.

Then, a predetermined rotation is given to the disk D by driving the drive motor with the disk D floating. Further, the pickup mechanism 50
Is read, and information recorded on the disk D is read while the head base 53 moves in the radial direction.

The clamper may be as shown below. FIG. 5 is a sectional view of a clamper according to the second embodiment, and FIG. 6 is a sectional view illustrating a clamper and a turntable according to the third embodiment.

In FIG. 5, a hook 32e facing the flange 32d is annularly or intermittently provided on the side surface of the clamper 32. Then, the hook 32
A tapered surface 32c is integrally formed below d. The gap between the flange 32d and the hook 32d is slightly larger than the thickness of the clamp plate 31. The clamper 32 can insert the convex portion 32a of the clamper 32 into a round hole formed in the clamp plate 31 from the Z2 direction in the drawing. Thus, the clamper 32 is rotatably supported by the clamper plate 31 and can be prevented from falling out of the round hole.

In FIG. 6, a hook 62a is formed on the outer peripheral edge of the upper surface of the clamper 62. A concave portion 62b is formed on the lower surface of the clamper 62, and the concave portion 62b is formed.
A metal member 63 such as iron or nickel is buried inside b. An annular flange portion 62c extending in the outer peripheral direction is formed at the tip of the concave portion 62b.
A leading end of d is provided with a tapered surface 62d. Also in the clamper 62, the hooking portion 62a and the flange portion 62c
Is formed slightly wider than the thickness of the clamp plate 31.

In the clamper 62, by inserting the upper surface side of the clamper 62 into the round hole of the clamp plate 31 from the Z1 direction in the figure, the hook 62a can be hooked on the inner edge of the round hole. Thus, the clamper 62 is rotatably supported in the round hole, and can be prevented from falling out of the round hole.

In the second and third embodiments, it is not necessary to provide the support member 25 on the upper surface of the clamper. Further, the upper surface of the clamp plate 31 and the support member 25
There is no need to provide a vertical movement allowance between them. Therefore, it is possible to make the disk device thinner than in the first embodiment.

In the third embodiment, when the tray 20 provided with the clamper 62 on the clamp plate 31 is moved from the standby position to the drive position, the disk drive unit 40 approaches the clamper 62. In the Z1 direction. At this time, the fitting projection 43b of the turntable 43 enters the center hole D1 of the disc D and the recess 62b of the clamper 62, and the upper surface of the turntable 43 approaches the metal member 63 embedded in the clamper 62. This allows the magnet in the turntable 43 to fit the metal member 63 by magnetic attraction. Further, in the third embodiment, the fitting recess 43b of the turntable 43 can position the center hole D1 of the disk D. Therefore, the accuracy of the centering of the disk D can be improved.

In each of the embodiments described above, one tray 20 is provided, but the present invention is not limited to this. That is, by stacking a plurality of trays 20, a disk device of a disk change type can be obtained. In this case, a large height dimension for the clamp arm to move up and down is not required, so that the changer type disk device can be made thin.

When the tray 20 moves to the rear side in the Y1 direction, it is regarded as a disk standby position (stock position), and the position at which the tray 20 moves in the Y2 direction from the standby position is the disk drive position (play position). ).

[0052]

According to the present invention described in detail above, the clamper is integrated with the disk holding member such as a tray, so that the amount of movement of the clamper can be minimized, and the disk device can be made thinner. be able to.

By using a plurality of the above trays, it is possible to provide a disk device which is small in size and can store a large number of disks.

[Brief description of the drawings]

FIG. 1 is a plan view showing a disk drive according to the present invention;

FIG. 2 is a perspective view showing a first embodiment of a tray and a clamp member;

FIG. 3 is a sectional view taken along the line III-III of the disk device of FIG. 1, wherein (A) is a state immediately after the disk is inserted,
(B) is a state where the disc is moving in the tray,
(C) is a state where the disc is positioned in the tray,

FIGS. 4A and 4B are cross-sectional views taken along the line IV-IV of the disk device of FIG. 1, wherein FIG. 4A is an unclamped state, FIG.

FIG. 5 is a sectional view of a clamper according to a second embodiment;

FIG. 6 is a sectional view showing a clamper and a turntable according to a third embodiment;

FIG. 7 shows an in-vehicle CD as an example of a conventional disk device.
It is a side view which shows schematic structure of a player, (A) is an unclamped state, (B) is a clamped state,

[Explanation of symbols]

 Reference Signs List 10 disk device 11 housing 13 insertion opening 15 internal housing 17 transfer means 20 tray 21 mounting surface 22 defective portion 30 clamp member 31 clamp plate 31a, 31b, 31c, 31d support portion 32 clamper 32a convex portion 32b fitting concave portion 32c Tapered surface 40 Disk drive unit 41 Elevating base 42 Drive motor 43 Turntable 43a Support unit 43b Fitting protrusion 50 Pickup

Claims (6)

[Claims] 1. A disk device provided with a disk holding member and a turntable fitted into a center hole of a disk held by the disk holding member, wherein the disk holding member has a disk surface. A mounting surface that supports a part of the disk and a clamper are provided, and when the disk is supplied on the mounting surface, the clamper is fitted into a center hole of the disk, and the disk is mounted on the mounting surface. The disk can be held between the clamper and the disk, and when the disk is driven, the disk is sandwiched between the turntable and the clamper, and the disk can be rotationally driven at a position away from the mounting surface. Disk device. 2. The disk device according to claim 1, wherein the clamper is formed with a tapered surface that generates a component force in a direction away from the mounting surface by a disk sending force. 3. The disk device according to claim 1, wherein the turntable and the clamper are fitted by magnetic attraction. 4. The disk holding member, wherein the clamper is supported by an elastically deformable support, and the clamper is movable in a direction away from the mounting surface by elastically deforming the support. 4. The disk device according to any one of 1 to 3. 5. The disk holding member is movable in the apparatus while holding the disk, and by this movement, the disk holding member moves the disk to a standby position or a disk drive position where the turntable is disposed. The disk device according to claim 1, wherein the disk device is moved to. 6. The disk device according to claim 1, further comprising a disk transfer unit for supplying a disk to the disk holding member.