JP2003006971A - Disk device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the play of a tray when the tray is moved to a disk exchange position. SOLUTION: A disk device 11 has a tray holding mechanism 112 constituted of an engaging groove 114 disposed in the lower surface rear side of a tray 12, and a pair of engaging pins 83b projected to the right end of a second slider 28. Because of a small clearance between an outer diameter and the groove width of the engaging groove 114, the engaging pins 83b engages with almost no play. Thus, the pair of engaging pins 83b are moved in a D direction associatively with the movement of the tray 12 in an A direction, and is engaged with the engaging groove 114 to reduce play when the tray 12 is moved to a disk replacing position. Therefore, even when a user touches the tip of the tray 12 at loading a disk on the disk loading part 30 of the tray 12, the play of the tray 12 is prevented.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disc device, and more particularly to a disc type recording medium (hereinafter referred to as "disc") equipped with a tray type disc loading mechanism having a movable tray. Disc device

[0002]

2. Description of the Related Art As a conventional disk device, for example,
As shown in Japanese Patent Laid-Open No. 11-39842, when a tray on which a disc such as a CD or a CD-ROM is placed moves into the apparatus, a movable base having a turntable moves upward to clamp the disc. There is a disk device configured to rotate.

In the disk device described in this publication,
A tray movably provided between the disc exchange position and the disc storage position, a movable base for supporting the turntable and the pickup, a clamper for sandwiching the disc between the turntable, and the tray at the disc storage position. And a movable base drive mechanism that is driven by a motor to move the movable base so as to sandwich the disk between the turntable and the clamper when the movable base moves. The movable base drive mechanism is driven by a first movable base drive member on the drive side and a second movable base drive member that is driven by being engaged with the first movable base drive member to move the movable base up and down to a disk storage position or a disk exchange position. And a movable base drive member.

In this disc apparatus, the rotational driving force of the motor for driving the tray is transmitted to the rack provided on the tray via the drive gear to move the tray to the disc replacement position or the disc accommodation position. Further, in the disk device, the drive gear for driving the tray is also meshed with the rack of the first movable base drive member, so that the tray and the movable base can be driven by one motor. ing.

Further, in order to prevent the vibration from propagating to the turntable and the pickup, a movable base for supporting the turntable and the pickup and a second movable base driving member for operating the movable base are supported in a floating state by an insulator rubber. The first movable base drive member provided on the chassis and driven by the drive gear is provided on a fixed portion that supports the chassis.
The movable base has a protruding pin that engages with an inclined groove provided in the second movable base driving member, and the protruding pin moves in the horizontal direction by sliding the second movable base driving member. It moves up and down along the inclined groove.

However, in the conventional disk device having the above-described structure, the drive gear meshes with the rack provided on one side of the tray, so that the guide portion provided on the other side of the tray and the guide portion provided on the other side of the tray. The clearance with the fitting portion that fits into the guide portion was set to be relatively large, and the rattling of the tray was large. Therefore, when the tray is moved to the disc replacement position, the front end of the tray protrudes toward the front of the device in a cantilever state where the rear end of the tray is supported, and the rattling at the front end of the tray is particularly noticeable. However, if the user touches the tip of the tray when placing the disc on the tray, the tray may rattle greatly, which is inferior to the user. Therefore, an object of the present invention is to provide a disk device that solves the above problems.

[0006]

In order to solve the above problems, the present invention has the following features. Claim 1
According to the invention described in the above, a tray on which a disc-shaped recording medium is placed and is provided so as to be movable between a disc exchange position and a disc storage position, and the tray is moved between the disc exchange position and the disc storage position. And a holding mechanism for holding the tray in a rattling-free state by engaging the rear end of the tray when the tray moves to the disk exchange position. With the holding mechanism, the rattling of the tray moved to the disc exchange position is reduced, and the sense of quality can be enhanced.

According to the second aspect of the invention, the holding mechanism has a pair of engaging grooves extending in the moving direction of the tray and a pair of engaging grooves that engage with the engaging groove when the tray is moved to the disc replacement position. It is possible to reduce the rattling of the tray by reducing the clearance between the engaging groove and the pair of engaging portions.

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an exploded perspective view of an embodiment of a disk device according to the present invention. FIG. 2 is a plan view showing a state in which the tray 12 is removed while leaving the guide groove of the tray 12. FIG. 3 is a front view showing the structure near the movable base drive mechanism 26. As shown in FIGS. 1 to 3, the disk device 11 is a CD-ROM device, and is generally a CD-R.
The tray 12 on which the OM (disk-shaped recording medium) is placed is located between the disk exchange position and the disk storage position by A,
It is attached so as to be movable in the B direction. Tray 12
Is supported by the tray guide mechanism 110, which will be described later, so as to be movable in the front-rear direction (A and B directions) with respect to the chassis 13, and rattles when it is moved to the disc replacement position by the tray holding mechanism 112, which will be described later. It will be held in a state of no contact.

The tray guide mechanism 110 includes the sliding portions 46 and 47 provided on the tray 12 and the tray support portion 5 which is provided on the chassis 13 and slides on the upper surfaces of the sliding portions 46 and 47.
3, 54, guide grooves 46a, 47a recessed on the lower surface side of the sliding portions 46, 47, and convex portions 13a, 1 protruding on the chassis 13 so as to fit in the guide grooves 46a, 47a.
3b and.

In the tray holding mechanism 112, the tray 12 is A
When the tray 12 moves in the direction and reaches the disc exchange position, the tray guide mechanism 110 guides only the rear end portion of the tray 12, so that the rattling of the tray 12 is prevented from becoming large. That is, the tray holding mechanism 112 is
An engaging groove 114 provided in the rear portion of the lower surface side of the tray 12,
It is composed of a pair of engagement pins (engagement portions) 83b protruding to the right end of the second slider 28 described later.

The engagement pin 83b is set to have a small clearance between the outer diameter and the groove width of the engagement groove 114, so that most of the engagement pin 83b can engage with each other without any rattling. for that reason,
The pair of engagement pins 83b moves in the D direction in conjunction with the movement of the tray 12 in the A direction, and engages with the engagement groove 114 when the tray 12 moves to the disc exchange position, so that the tray 12 of the tray 12 moves. Reduce rattling.

The engaging groove 114 is formed so as to extend in the directions A and B, which are the moving directions of the tray 12, and both ends 11 are formed.
4a and 114b are widened in a taper shape so that the engaging pin 83b can easily enter. Further, since the second slider 28 having the engagement pin 83b moves in the left and right directions (C and D directions) with the drive gear 29 meshing with the rack 40 of the tray 12 meshing with no rattling, the second slider 28 is engaged. The pin 83b can be stably supported. Further, the second slider 28 moves the tray 12 in the moving direction (A,
Since it moves in the left and right directions (C and D directions) orthogonal to the (B direction), it does not become inoperable due to the engagement with the engagement groove 114.

The floating chassis 14 is attached to the chassis 13 so as to be supported in a floating state. That is, between the front side of the floating chassis 14 and the chassis 13, the insulator rubber 15 that absorbs vibration is interposed at a plurality of locations. The floating chassis 14 also rotatably supports a movable base 16 whose front end moves up and down with a rear end as a fulcrum.

Further, the clamper holder 17 is attached to the floating chassis 14 from above. Both ends of the clamper holder 17 are arranged above the floating chassis 14 so that the clamper holder 17 is horizontally suspended above the floating chassis 14.
It is fixed on both sides of. A clamper 18 that holds the peripheral edge of the center hole of the disk is rotatably attached to the center hole 17a of the clamper holder 17.

On the upper surface of the movable base 16, a turntable 19 that rotatably supports the disk and a disk motor 20 that rotationally drives the turntable 19 are supported. A pickup 21 for optically reading information recorded on the recording surface of the disc is provided in the upper opening 16a of the movable base 16 so as to be movable in the disc radial direction (A and B directions).

A leaf spring 22 is attached to one end of the movable base 16. Floating chassis 1
The rear part of 4 is the insulator rubber 1 with respect to the chassis 13.
It is supported in a floating state via 5. And
At the other end of the movable base 16, a pair of pins 23, to which the driving force of the lifting operation is transmitted, project in the A direction.

A front bezel 24 is attached to the front side of the chassis 13. Front bezel 24 is tray 12
Has an opening 25 for passing when moving. Therefore, when the disc is replaced, the tray 12 is pulled out in the direction A from the opening 25 of the front bezel 24. And
When mounting the disc, the tray 12 on which the disc is placed moves in the direction B, passes through the opening 25, and is drawn into the disc storage position in the apparatus.

A movable base drive mechanism 26 for raising and lowering the other end of the movable base 16 is provided on the front side of the chassis 13 and the floating chassis 14. The movable base drive mechanism 26 is provided on the upper surface of the chassis 13 with C,
The first slider 27 slidably mounted in the D direction
And a second slider 28 mounted on the upper surface of the floating chassis 14 so as to be slidable in the C and D directions.

A drive motor (not shown) for driving the movable base drive mechanism 26 is mounted on the chassis 13 and drives the drive gear 29 via a reduction gear group (not shown). This drive motor (not shown) is drive-controlled so that the rotation direction is switched by a control signal from a control circuit (not shown), moves the other end of the movable base 16 up and down, and moves the tray 12 to A, It also functions as a drive source when moving in the B direction.

Now, the structure of the tray 12 will be described. As shown in FIG. 1, the tray 12 has an annular disc mounting portion 30 on the upper surface thereof, on which a disc is mounted. An opening 31 is provided inside the disc mounting portion 30 so that the turntable 19 and the pickup 21 face each other. Further, a stopper 12a for moving to the disc exchange position is provided at the rear portion of the left side surface of the tray 12.

FIG. 4 is a bottom view of the tray 12 as seen from below. As shown in FIG. 4, on the lower surface of the tray 12,
A rack 40 meshing with a drive gear 29 driven by a drive motor (not shown) is formed extending in the A and B directions.
Further, the lower surface of the tray 12 is provided with a first guide groove 42 for guiding the sliding movement of the first slider 27 and a second guide groove 44 for guiding the sliding movement of the second slider 28. The first guide groove 42 is formed of a space surrounded on both sides by walls 42a and 42b protruding from the lower surface of the tray 12. The first slider 27 has a pin 73.
When C passes through the inclined portion 42c of the first guide groove 42, C,
Move in D direction.

The first guide groove 42 is provided at a position overlapping the opening 31 of the upper tray 12 in the A and B directions. Therefore, when the pin 73 of the first slider 27 is in a position facing the opening 31, the pin 73 is not fitted in the first guide groove 42 and relatively moves to the first guide groove 42 when the tray 12 reaches the disc storage position. Fit into the guide groove 42. Also, the second guide groove 44 has the tray 1 on both sides as in the first guide groove 42.
2 is formed of a space surrounded by wall portions 44a and 44b protruding from the lower surface. The second slider 28 has a pin 83a.
Moves in the C and D directions when passing through the inclined portions 44c and 44d of the second guide groove 44.

On both sides of the lower surface of the tray 12, sliding portions 46 and 47 extending in the A and B directions are integrally provided. Further, the tray 12 has an opening 12 through which the disc pressing pieces 16b and 16c of the movable base 16 enter.
b and 12c are provided. Next, the configuration of the chassis 13 will be described. As shown in FIG. 1, the chassis 1
3, tray support portions 53 and 54 for supporting the tray 12 are provided on the inner surfaces of the side walls 51 and 52 on both sides. The supporting portions 53 and 54 are provided at a plurality of locations (three locations in this embodiment) so as to contact the sliding portions 46 and 47 from the upper surfaces to guide and regulate the sliding of the tray 12.
Further, at the intermediate positions of the side walls 51 and 52 in the A and B directions,
Recesses 51a and 52a are provided.

A pair of guide holes 55 for guiding the first slider 27 slidably in the C and D directions are provided at the edge of the opening 48 formed at the bottom of the chassis 13. Further, on the front side of the bottom of the chassis 13, a stepped recess 6 corresponding to the shape of the insulator rubber 15 described above is formed.
0 is provided.

Next, the structure of the floating chassis 14 will be described. As shown in FIGS. 1 and 2, the floating chassis 14 is supported on the chassis 13 in a floating state by a plurality of insulator rubbers 15. Therefore, the vibration input to the chassis 13 is absorbed and insulated by the plurality of insulator rubbers 15.

Further, the floating chassis 14 includes
An opening 61 for raising and lowering the movable base 16 is provided. On the B direction side of the opening 61, a mounting portion 62 to which a leaf spring 22 that supports the movable base 16 so as to be able to move up and down is fixed.
Are formed. And floating chassis 1
Holes 63 and 64 through which the tray support portions 53 and 54 provided on the chassis 13 are inserted in a loosely fitted state are provided at the bottom surface and the corner portions of both side surfaces of the No. 4.

Therefore, the tray support portions 53 and 54 are incorporated in the floating chassis 14 in a non-contact state. Therefore, the floating chassis 14 is attached so that the vibration input to the chassis 13 is not transmitted through the tray support portions 53 and 54. further,
The drive gear 29 is provided on the bottom surface of the floating chassis 14.
A circular hole 65 through which a pin is inserted, a pin 73 from the first slider 27, and a leaf spring 87 provided on the second slider 28.
Is provided with a rectangular opening 66.

Further, on the upper ends of both side surfaces of the floating chassis 14, there are provided flat mounting portions 67, 68 to which both end portions of the clamper holder 17 are fixed. The mounting portions 67 and 68 are formed so as to project outward from both side surfaces of the floating chassis 14. further,
The sidewalls 51, 52 of the chassis 13 have recesses 51a, 52
a is provided, the floating chassis 14
When the mounting part 67, 68 is mounted on the chassis 13,
Is inserted into the recesses 51a and 52a of the side walls 51 and 52, and the floating chassis 14 is attached to the chassis 13 in a non-contact state.

Next, the movable base drive mechanism 26 will be described. FIG. 5 is a diagram showing the configuration of the drive gear 29,
(A) is a plan view, (B) is a vertical sectional view taken along the line BB,
(C) is a longitudinal cross-sectional view taken along the line CC. Figure 5 (A)
As shown in (B), the drive gear 29 includes a large-diameter gear 29a that meshes with a reduction gear driven by a drive motor (not shown), and a movable base drive integrally formed on the upper surface of the large-diameter gear 29a. It has a small diameter gear 29b and a tray driving gear 29c fitted to the upper end of the small diameter gear 29b. Since the tray drive gear 29c has the gear-shaped recess 29d, it can rotate integrally with the large diameter gear 29a and the small diameter gear 29b.

Also, a small diameter gear 29b for driving the movable base.
Drives the first slider 27 by meshing with a rack 71 described later. The tray drive gear 29c meshes with the rack 40 provided on the left inner wall of the tray 12 to drive the tray 12. 6A to 6F are views for explaining the configuration of the first slider 27 of the movable base drive mechanism,
(A) is a plan view, (B) is a front view, (C) is a bottom view,
(D) is a left side view, (E) is a sectional view taken along line EE, and (F) is F.
It is a -F sectional view. As shown in FIGS. 6 (A) to 6 (F), the first slider 27 is formed on the rear edge portion of the gear 29.
a rack 71 that meshes with a, a spring portion 72 that abuts a step portion of the chassis 13 and urges in the C direction, a cylindrical engagement pin 73 that projects upward and engages the second slider 28,
It has guide portions 74 and 75 which project downward and are slidably engaged with a pair of guide holes 55 provided in the chassis 13 to guide the sliding position. The first slider 27 is slidably provided on the chassis 13 as a fixed portion.
The spring portion 72 is an elastic body formed in an inverted U shape, and is elastically deformed when the tray 12 is displaced to the disc exchange position to urge the first slider 27 in the C direction.

Further, on the upper surface of the first slider 27, first and second projections 76, 77 for restricting the operation of the second slider 28 are projected, as will be described later. The second protrusion 77 is formed higher than the first protrusion 76. Further, since the guide portions 74 and 75 projecting from the lower surface of the first slider 27 are formed in an inverted T shape, they are engaged with the pair of guide holes 55 to be guided in the sliding direction and move upward. Is prevented from coming off.

FIGS. 7A to 7C are views for explaining the structure of the second slider 28 of the movable base drive mechanism.
(A) is a plan view, (B) is a front view, and (C) is a side view. As shown in FIGS. 7A to 7C, the second slider 28 is formed in an L shape when viewed from the side, and includes a flat surface portion 81 that slides on the floating chassis 14, and a flat surface portion 81. The cam portion 82 hangs downward from the edge portion. The flat portion 81 has a pin 8 protruding upward from the vicinity of the left end.
3a and a pair of engagement pins 8 protruding upward from the vicinity of the right end
3b, a pair of elongated holes 84 and 85 extending in the sliding direction (C and D directions), and a square hole into which the engagement pin 73 standing upright from the first slider 27 is inserted in a loosely fitted state. 86
A leaf spring 87 which is restricted in movement by contacting the first and second protrusions 76 and 77 of the first slider 27, and a sliding direction which is engaged with the edge portion of the opening 61 of the floating chassis 14 to guide the sliding direction. And a guide portion 88 protruding as described above.

The second slider 28 is slidably supported by the floating chassis 14 supported in a floating state by the insulator rubber 15, so that the vibration from the first slider 27 provided on the chassis 13 is not transmitted. The engaging pin 73 of the first slider 27 is loosely fitted into the hole 86.

Further, the flat portion 81 has a sliding direction (C, D
A cross-shaped hole 81a extending in the direction) penetrates through, and a leaf spring 87 is inserted into this hole 81a. One end 87a of the leaf spring 87 is fixed to the flat portion 81 by a fixing method such as heat staking, and the other end 87b extending in the D direction is a free end. And the other end 87b of the leaf spring 87
On the lower surface of the first slider 27,
An abutting portion 87c that abuts the 6, 77 is provided. Also, on both sides of the other end 87b of the leaf spring 87, the contact portion 87c is provided.
A sliding contact portion 87d that is in sliding contact with the trapezoidal cam 14a that projects on the upper surface of the floating chassis 14 when the is separated from the first and second protrusions 76 and 77.

The cam portion 82 is provided with a slanted groove 8 into which a pair of pins 23 projecting from the front end of the movable base 16 are inserted.
9, 90 penetrates. Therefore, the second slider 28
Slides in the C direction, the pair of pins 2 of the movable base 16
3 relatively moves up along the inclined grooves 89, 90. Therefore, the turntable 19 and the pickup 21 supported by the movable base 16 pass through the opening 61 of the floating chassis 14 and are displaced upward.

As a result, the disk placed on the tray 12 is lifted by the turntable 19 and clamped between it and the clamper 18. At the same time, the pickup 21 can face the lower surface of the clamped disk and read the information recorded on the disk.

Further, projections 91 and 92 provided on the floating chassis 14 are fitted into the long holes 84 and 85. Therefore, the second slider 28 is regulated so that the sliding direction becomes the C and D directions by fitting the elongated holes 84 and 85 and the projections 91 and 92.

Here, the operation of the movable base drive mechanism 26 configured as described above will be described together with the operation of the tray 12.

FIG. 8 is a side view showing a state where the tray 12 is moved to the disc exchange position. As shown in FIG. 8, when the tray 12 is pulled out in the direction A and moved to the disc exchange position, the front end of the movable base 16 is lowered. Therefore, the movable base 16 is in a state in which the leaf spring 22 serving as the rotation fulcrum is bent and inclined. Therefore,
The turntable 19 and the pickup 21 descend as the movable base 16 rotates.

9A and 9B are views showing the operating state of the movable base drive mechanism 26 when the tray 12 is completely moved to the eject position where the disc can be exchanged by the eject operation. FIG. 9A is a plan view and FIG. 9B is a front view. It is a figure. Figure 9
As shown in (A) and (B), the second slider 28 is slidably mounted on the upper surface of the floating chassis 14, and the first slider 27 is slidably opposed to the lower surface of the floating chassis 14. ing. A trapezoidal cam 14 a that abuts against the leaf spring 87 projects from the upper surface of the floating chassis 14.

The cam 14a is provided at a position where a contact portion 87d protruding laterally of the leaf spring 87 is in sliding contact.
Then, the leaf spring 87 is displaced to the unlocked position by the sliding contact portion 87d passing the inclined portion of the cam 14a depending on the sliding position of the first slider 27. During the disk mounting operation, the engagement pin 73 of the first slider 27 moves in the D direction with respect to the hole 86 and does not press the second slider 28 in the C direction. No need to regulate.

FIG. 10 is a plan view showing an operating state of the tray holding mechanism 110 when the tray 12 is moved to the disc exchange position. As shown in FIG. 10, when the tray 12 is moved to the disc exchange position, the tray 1
The rack 40 on the left side of the lower surface of 2 is meshed with the tray drive gear 29c of the drive gear 29 driven by the drive motor (not shown), and the pin 83a protruding upward from the second slider 28 is the second guide. The position is regulated by fitting in the groove 44. When the engagement groove 114 is engaged with the pair of engagement pins 83b, the pin 83a is separated from the wall of the second guide groove 44.

On the right side of the tray 12, the tray holding mechanism 112 holds the tray 12 without rattling. That is, the pair of engaging pins 83b protruding to the right end of the second slider 28 are engaged with the engaging groove 114 provided at the rear portion of the lower surface side of the tray 12, and hold the right side of the tray 12.

When the tray 12 moves to the disc exchange position, the pair of engaging pins 83b move in the D direction in conjunction with the movement of the tray 12 in the eject direction (A direction), so that the engaging groove 114. Engage with. Since the engagement pin 83b has a small clearance between the outer diameter and the groove width of the engagement groove 114, the engagement pin 83b is engaged without rattling, which can reduce rattling of the tray 12. it can.

Therefore, when the user mounts the disc on the disc mounting portion 30 of the tray 12, the tray 12 does not rattle even if it comes into contact with the tip end portion of the tray 12, which is not inferior to a high-end machine.

The operation of the first slider 27 and the second slider 28 of the movable base drive mechanism 26 will be described.

FIG. 11 is a view showing the states of the first slider 27 and the second slider 28 during the disk mounting operation,
(A) is a plan view and (B) is a front view. FIG. 11 (A)
As shown in (B), the first slider 27 is
Since it has the rack 71 that meshes with the gear 9a, when the gear 29a is rotationally driven by the drive motor (not shown) by the disc mounting operation, the gear 29a slides in the D direction. The engagement pin 73 presses the wall surface of the hole 86 in the D direction, and the second slider 28 moves to the D direction.
Slide in the direction. The sliding contact portion 87d of the leaf spring 87 rides on the upper surface of the cam 14a and is displaced upward while the second slider 28 slides in the D direction. As a result, the leaf spring 87
The abutting portion 87c provided at the tip of the first slider 27 is separated from the first and second protrusions 76 and 77 of the first slider 27, whereby the relative regulation between the first slider 27 and the second slider 28 is released. .

FIGS. 12A and 12B are views showing the states of the first slider 27 and the second slider 28 when the disk accommodation is completed. FIG. 12A is a plan view and FIG. 12B is a front view. 12
As shown in (A) and (B), when the second slider 28 further slides in the D direction, the sliding contact portion 87d of the leaf spring 87 separates from the trapezoidal cam 14a and the movable base 16
A pair of pins 23 of the inclined grooves 89, 90 of the inclined portions 89b,
The upper horizontal portion 89 of the inclined grooves 89, 90 passing through 90b.
The front end of the movable base 16 rises in the process of reaching a, 90a. As a result, the turntable 19 mounted on the movable base 16 clamps the disk mounted on the tray 12, and the pickup 21 faces the recording surface of the disk. At this time, the pin 73 is C and D in the hole 86.
You can move freely in any direction.

FIG. 13 is a diagram showing the states of the first slider 27 and the second slider 28 during the eject operation.
(A) is a plan view and (B) is a front view. FIG. 13 (A)
As shown in (B), the pair of pins 23 of the movable base 16 are moved by the ejecting operation so that the inclined portions 8 of the inclined grooves 89 and 90.
The front end of the movable base 16 descends when passing through 9b and 90b and located in the lower horizontal portions 89c and 90c. As a result, the turntable 19 mounted on the movable base 16
And the pickup 21 moves below the tray 12.

In the movable base 16, the pair of pins 23 are inclined from the P1 position of the upper horizontal portions 89a and 90a to the inclined portions 89b and 9b.
Since the engagement pin 73 of the first slider 27 is loosely fitted in the hole 86 so that the vibration from the first slider 27 is not propagated to the second slider 28 when moving to the P2 position of 0b,
The pin 23 moves in the direction C with respect to the hole 86, and the pin 23
By pressing b and 90b in the D direction, the second slider 28 slides and the pin 23 suddenly moves to the lower horizontal portion 89.
There was a risk that it would fall to the P3 position of c and 90c.

However, the second slider 28 is not shown in FIG.
Further, as shown in FIG. 13B, the contact portion 87 c provided at the tip of the leaf spring 87 has the first and second contact points of the first slider 27.
The first slider 27 that is brought into contact with the second protrusions 76 and 77 to restrict movement in the D direction and is driven by the drive gear 29
Move together with. Therefore, when the ejecting starts, the engaging pin 73 of the first slider 27 moves in the C direction with respect to the hole 86 and the pin 23 of the movable base 16 moves from the P1 position to the P2 position. D
Even if the second slider 28 is pressed in the direction, the second slider 28 cannot freely move in the D direction, so that the pin 23 cannot rapidly descend, and the front end of the movable base 16 descends at a speed according to the drive position of the first slider 27.

As described above, the tray 1 is operated during the eject operation.
When lowering the front end of the movable base 16 before moving 2, the pin 23 of the movable base 16 moves from the P1 position to the P position.
Since the front end of the movable base 16 does not abruptly descend in the process of moving to the second position, the hole 86 of the second slider 28 does not collide with the engaging pin 73, and an impact and an impact sound are generated when the movable base 16 is lowered. Can be prevented. Further, the impact due to the lowering of the movable base 16 is mitigated, and the disc is prevented from being displaced from the mounting position of the tray 12 due to the impact. In the above embodiment, the CD-ROM device is given as an example, but the present invention is not limited to this, and it is needless to say that the present invention can be applied to a disc device in which a recording medium other than the CD-ROM is mounted.

As described above, according to the first aspect of the present invention, the tray on which the disk-shaped recording medium is placed and which is provided so as to be movable between the disk exchange position and the disk storage position, and the tray are provided. In a disc device having a guide mechanism that guides the disc to move between a disc exchange position and a disc storage position, when the tray moves to the disc exchange position, the tray is engaged with the rear end of the tray to rattle the tray. Since the holding mechanism for holding the tray in a non-sticky state is provided, rattling of the tray moved to the disc replacement position by the holding mechanism is reduced, and a high-class feeling can be enhanced.

According to the second aspect of the present invention, the holding mechanism includes an engagement groove extending in the tray moving direction,
Since the tray is provided with a pair of engaging portions that engage with the engaging grooves when the tray is moved to the disc replacement position, the clearance between the engaging grooves and the pair of engaging portions is reduced to rattle the tray. You can reduce the stickiness.

[Brief description of drawings]

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

FIG. 2 is a plan view showing a state in which the tray is removed while leaving a guide groove of the tray.

FIG. 3 is a front view showing a structure near a movable base drive mechanism.

4A and 4B are diagrams showing a configuration of a tray 12, FIG. 4A is a bottom view of the tray 12 seen from below, FIG. 4B is a side view showing an enlarged rack introducing portion of the tray 12, and FIG. 1
It is a bottom view which expands and shows the rack introduction part of 2.

5A and 5B are diagrams showing a configuration of a drive gear 29, FIG. 5A being a plan view, FIG. 5B being a vertical sectional view taken along line BB, and FIG.
It is a longitudinal cross-sectional view taken along the line C.

6A and 6B are views for explaining the configuration of the first slider 27 of the movable base drive mechanism, in which FIG. 6A is a plan view, FIG. 6B is a front view, FIG. 6C is a bottom view, and FIG. It is a front view, (E) is an EE sectional view, and (F) is an FF sectional view.

7A and 7B are views for explaining the configuration of a second slider of the movable base drive mechanism, FIG. 7A is a plan view, FIG. 7B is a front view, and FIG.

FIG. 8 is a side view showing a state in which the tray is moved to a disc exchange position.

9A and 9B are diagrams showing an operation state of the movable base drive mechanism when the tray 12 is completely moved to an eject position where a disc can be exchanged by an eject operation, FIG. 9A is a plan view, and FIG. 9B is a front view. is there.

FIG. 10 is a plan view showing an operating state of the tray holding mechanism 110 when the tray 12 moves to the disc exchange position.

11A and 11B are diagrams showing the states of the first slider 27 and the second slider 28 during the disk mounting operation process, FIG. 11A being a plan view and FIG. 11B being a front view.

FIG. 12 shows the first slider 27 when the disk is completely accommodated.
It is a figure which shows the state of the 2nd slider 28, and (A) is a top view and (B) is a front view.

13A and 13B are diagrams showing the states of the first slider 27 and the second slider 28 during the ejecting operation, FIG. 13A being a plan view and FIG. 13B being a front view.

[Explanation of symbols]

11 Disk device 12 trays 13 chassis 13a, 13b convex part 14 floating chassis 15 Insulator rubber 16 movable base 17 Clamper holder 18 clamper 19 turntable 20 disk motor 21 pickup 23 pin 24 front bezel 26 Movable base drive mechanism 27 First slider 28 Second slider 29 drive gear 30 Disc mounting part 40 racks 42 First guide groove 44 Second guide groove 46,47 Sliding part 46a, 47a Guide groove 53, 54 tray support 71 racks 73 Engagement pin 76 First protrusion 77 Second protrusion 81 Plane 82 Cam section 83a pin 83b Engagement pin 86 holes 87 leaf spring 89,90 inclined groove 110 Tray guide mechanism 112 Tray holding mechanism 114 engaging groove

Claims (2)

[Claims] 1. A tray on which a disc-shaped recording medium is placed and which is movable between a disc exchange position and a disc storage position, and the tray is moved between the disc exchange position and the disc storage position. And a guide mechanism that guides the holding mechanism for holding the tray in a rattling-free state by engaging the rear end of the tray when the tray is moved to the disc exchange position. A disk device provided. 2. The holding mechanism includes an engagement groove extending in a moving direction of the tray, and a pair of engagement grooves that engage with the engagement groove when the tray moves to the disc exchange position. A disc device comprising: