JP4196893B2 - Disk unit - Google Patents

Description

The present invention relates to a disk drive device such as a CD or a DVD, for example, and particularly to prevent vibrations generated in a unit of a traverse assembly (frame body) that accommodates most of a drive mechanism such as a spindle motor. This relates to the member.

In a general disk device, the main cause of sound skipping and image disturbance is considered to be vibration. Accordingly, various disk devices have been developed in which measures for preventing vibrations have been taken.

For example, in the disk device of Patent Document 1, a traverse assembly (frame body) including an optical pickup unit that reads and writes data on a disk, a spindle motor that rotates the disk, and the like is provided in an intermediate cabinet of the disk device. When mounting (when pinning with a mounting pin), a vibration preventing member (floating rubber) is interposed.

Specifically, the mounting hole provided in the traverse assembly covers the circumference (circumference) of the hole itself and both ends in the direction of the hole (mounting hole), and has a floating hole in which a mounting pin can be inserted. Place the traverse assembly on an intermediate cabinet with similar mounting holes with rubber intervening (inset), and then attach the mounting holes of both (intermediate cabinet and traverse assembly). It is fixed with a pin.

In general, as shown in FIG. 15, the traverse assembly unit (unit including the traverse assembly 141) 149 is designed to be movable up and down (movable up and down). It moves in the direction (direction approaching the disc). The rotation of the spindle motor 142 for reading the disk is the main vibration factor. In other words, when the traverse assembly unit 149 is raised for reading the disk (when chucking). In particular, it can be said that it is necessary to take measures against vibration.

Here, the mechanism of the vertical movement (chucking operation) of the conventional traverse assembly unit 149 will be described with reference to FIGS. FIG. 15 is a schematic configuration diagram showing the up and down movement of the traverse assembly unit 149 as described above, and FIG. 16 is a plan view showing the traverse assembly unit 149 in detail (however, the cam cylinder 129 is shown in FIG. 15). ,
Omitted for convenience). 17 (a) and 18 (a) show the cam cylinder 129 for convenience.
FIG. 17 is a schematic configuration diagram seen from an arrow LL ′ in FIG. 16 in which only the lever base plate 139 is clearly shown. 17 (b) and 18 (b) show the loader chassis 159 for convenience.
FIG. 17 is a schematic configuration diagram seen from an arrow MM ′ in FIG. 16 in which only the lever base plate 139 is clearly shown.

FIG. 17 shows the lever base plate 139 (traverse assembly unit 149).
18 shows a state where the lever base plate 139 is lowered, and FIG. 18 shows a state where the lever base plate 139 is raised.

Conventionally, as shown in FIG. 15, a rotation shaft 141X is provided at one end of a traverse assembly 141 in a traverse assembly unit 149, and this can be rotated by a bearing portion 159X of a loader chassis 159 that forms the skeleton of the disk device. Many are supported.

Further, as shown in FIG. 16, the cam groove 122 (see FIGS. 17 and 18) of the cam cylinder 129 (see FIG. 15) provided so as to be movable in the vertical direction with respect to the vertical movement direction surface of the traverse assembly unit 149. The cylindrical protrusion 133 of the lever base plate 139 attached to the end of the traverse assembly 141 (specifically, the end on the spindle motor 142 side) is inserted.

As shown in FIG. 17A, when the cam cylinder 129 moves in the V direction, the columnar protrusion engaging portion 133 of the lever base plate 139 moves from the position of the lower groove 122b in the cam groove 122 to the inclined opening groove. It passes through 122c and moves to the upper groove 122a. Then, as shown in FIG. 18A, the lever base plate 139 rises, and as a result, the traverse assembly unit 149 also rises.

As described above, when the traverse assembly unit 149 is raised, when the spindle motor 142 is rotated, the traverse assembly unit 149 varies with respect to the loader chassis 159. That is, the traverse assembly unit 149 vibrates with respect to the loader chassis 159 (see FIG. 15).

Therefore, in the conventional disk device 189, as shown in FIGS. 17 and 18, the lever base plate 139 is provided with a groove 139a in the vertical direction (vertical direction) and the groove 139a.
A resin spring 135 is provided on the upper side. Further, the loader chassis 159 is provided with a rib 102 having a bulging portion 102c on the upper side, although it is slightly smaller than the width (groove width) of the groove 139a.

When such a mechanism is provided, as shown in FIG. 17B, when the traverse assembly unit 149 is lowered, that is, when the lever base plate 139 is lowered,
The bulging portion 102c of the rib 102 does not contact the side wall portion of the groove 139a. However,
When the traverse assembly unit 149 is lifted as shown in FIG.
02 bulging portion 102c is a resin spring 135 and a groove 139a facing the resin spring 135.
By pressing against the side wall of the traverse assembly unit 149,
The vibration which has been a problem can be prevented.
Japanese Patent Laid-Open No. 6-5060 (refer to claim 1 and FIG. 2)

However, when the disk device 189 is used for many years, the traverse assembly unit 149 naturally repeats reciprocation (up and down movement) in the vertical direction (vertical direction) tens of thousands of times. For this reason, even if vibration can be prevented without any problems at the beginning of purchase, the resin spring 135 may be permanently deformed due to the ribs 102 after a certain period of time, resulting in a reduction in vibration suppression effect. Even under adverse conditions such as high temperatures, the resin spring 13
5 tends to deteriorate and may cause permanent deformation.

Therefore, the present invention has been made to solve the above-described problems, and an object of the present invention is to prevent vibration over a long period of time by preventing permanent deformation of a resin spring (elastic spring). It is to provide a disk device.

The present invention is a disk device including a traverse assembly provided so that it can be moved up and down by a rotational movement with one end of a main body chassis as a fulcrum, and the main body chassis is provided with a vibration suppressing groove. The traverse assembly is provided with an elastic spring that is elastically deformed by being fitted into the vibration suppression groove and presses the wall portion of the vibration suppression groove by a biasing force caused by a repulsive force accompanying the elastic deformation. Further, the main body chassis is provided with a deformation suppressing rib that causes a deformation that relieves elastic deformation of an elastic spring that presses the wall portion of the vibration suppressing groove.

According to this, the elastic spring presses against the wall portion of the vibration suppression groove, so that the traverse assembly is immovable (can be prevented from vibrating). By the way, when the disk device is used for many years, that is, the traverse assembly repeatedly moves up and down tens of thousands of times. However, in the present invention, the newly provided deformation suppression rib is deformed so as to relieve the elastic spring deformed so as to press against the wall portion of the vibration suppression groove in order to suppress vibration. As a result, the elastic spring is prevented from being permanently deformed, and the disk device can prevent vibration for a long period of time.

In the present invention, it is preferable that the vibration suppression groove is formed at a rising position in the ascending / descending direction so that the elastic spring fits into the vibration suppression groove when the traverse assembly is raised.

In the disk device, the vibration is most generated when the disk is reproduced. Therefore, it is not necessary to always elastically deform the elastic spring to prevent vibration. Therefore, in the present invention, the elastic spring is elastically deformed when the traverse assembly is raised in order to perform disk reproduction or the like. That is, in order to prevent the vibration from fitting into the vibration suppression groove, the vibration suppression groove is formed at the ascending position in the ascending / descending direction. Therefore, at the time of non-regeneration (that is, when the traverse assembly is lowered), the elastic spring is not elastically deformed and it is difficult to cause permanent deformation.

In the present invention, it is preferable that the deformation suppressing rib elastically deforms the elastic spring in the same direction as the urging direction of the elastic spring.

In order for the elastic spring to exert an urging force, it is elastically deformed in the direction opposite to the urging direction. Therefore, the deformation suppressing rib of the present invention prevents permanent deformation by elastically deforming the elastic spring in the same direction as the urging direction.

Further, in the present invention, the deformation suppression rib, when the traverse assembly is lowered,
In order to elastically deform the elastic spring in the same direction as the urging direction of the elastic spring, the elastic spring is preferably formed at a lowered position in the up-and-down direction.

That the elastic spring exerts an urging force means that it is sandwiched between the vibration suppression grooves. Therefore, even if elastic deformation for preventing permanent deformation is caused by the deformation suppressing rib in this state, not only the prevention effect is low, but also permanent deformation may be caused. Therefore, in the present invention, when the traverse assembly is lowered in the raising / lowering direction of the traverse assembly, a deformation suppressing rib is formed, and when the elastic spring is not fitted in the vibration suppressing groove, that is, when the traverse assembly is lowered, the permanent deformation prevention is performed. To cause elastic deformation. As a result, the elastic spring can be elastically deformed efficiently in the same direction as the urging direction.

The present invention will be described in detail. A main body chassis provided with a guide groove and a lift opening, a cam cylinder provided in the main body chassis so as to be reciprocally slidable, a cam groove provided in the cam cylinder, and the guide groove A lever base plate that is inserted into the lift opening, and a lever base plate that is fitted into the elevating opening, and the lever base plate is provided, and one end of the main body chassis is used as a fulcrum to interlock with the reciprocating sliding movement of the cam cylinder. In the disk device including the traverse assembly capable of moving back and forth along the guide groove, the wall of the lift opening and the hold rib are provided by providing the press rib from the upper part to the middle part of the lift opening. And a vibration suppression groove formed along the bottom of the vibration suppression groove. An elastic spring fitted into the vibration suppression groove is provided on the lever base plate while being elastically deformed by contacting the holding rib, and the traverse assembly is raised. In the case where the traverse assembly is fixed by pressing the wall portion of the vibration suppression groove by the urging force caused by the repulsive force of the elastic deformation by the elastic spring, while the traverse assembly is lowered The permanent deformation of the elastic spring is corrected by elastically deforming the elastic spring in the same direction as the urging direction of the elastic spring.

ADVANTAGE OF THE INVENTION According to this invention, the disk apparatus which can prevent a vibration over a long period of time can be provided by preventing the permanent deformation | transformation of an elastic spring (for example, resin spring).

[Embodiment 1]
An embodiment of the present invention will be described below with reference to the drawings.
[About the disk unit configuration]
As shown in the perspective view of FIG. 2, the disk device 89 is configured to mount a drive device 72 on an exterior housing 71.

As shown in the plan view of FIG. 3, the drive device 72 includes a disk tray 73 (for convenience, FIG.
Omitted. Therefore, it is configured to include a traverse assembly unit (TAU) 49 and a loader chassis unit (LCU) 69.
<About disc tray>
As shown in FIG. 2, the disk tray 73 is used to place a disk, and enters and exits from a slit-shaped entrance / exit 71 b provided in the front panel 71 a of the exterior housing 71 ( Tray in (loading) / tray out (unloading). In the following, the front panel 71
The direction in which a is provided is expressed as the front side (“F”), the opposing direction is expressed as the rear side (“R”), and the direction perpendicular to the direction from the front side to the rib side is the side side (“ S ")
(Illustrated).
<About the traverse assembly unit>
As shown in FIG. 3, the TAU 49 is configured to include a traverse assembly 41, an optical pickup unit (OPU; not shown for convenience), a spindle motor 42, a lever base plate 39, and a driving force transmission gear group 43. .

The traverse assembly 41 is a frame configured to mount the OPU, the spindle motor 42, the lever base plate 39, and the driving force transmission gear group 43. The traverse assembly 41 is screwed to one end on the rear side of a loader chassis 59 (described later).

Specifically, as shown in FIG. 4, a mounting hole 41 provided in the traverse assembly 41.
A floating rubber (a) having an opening into which the round boss 59a provided in the loader chassis 59 can be inserted while covering the circumference (circumference) of the hole 41a itself and both ends in the direction of the hole (attachment hole 41a). A damper 46 is interposed (inserted). Then, the traverse assembly 41 is placed while inserting the mounting hole 41a into the round boss 59a, and the mounting hole 41a and the round boss 59a of both (the traverse assembly 41 and the loader chassis 59) are fixed with the mounting screw 45. I am letting.

In particular, the screw head 45a of the mounting screw 45 and the mounting hole 59a of the loader chassis 59 are fixed so as to have a certain distance. Then, using this distance, the mounting screw 45 can be rotated as a fulcrum (specifically, the intersection of the center line of the round boss 59a and the traverse assembly 41), and the disk can be played back (chucking). In this case, it moves upward (see FIG. 4B), and in other cases (in the case of non-reproduction, etc.), it moves downward (see FIG. 4A). Note that FIG. 5 is an enlarged view of a portion E in FIG.

The OPU irradiates a disk with light (laser light or the like) to record or reproduce a signal. The OPU is provided on a shaft 47 provided on the traverse assembly 41 so as to be movable.
It is designed to be fixed to the U base 48 (to be placed). Specifically, a semiconductor laser for emitting laser light, an objective lens for condensing the laser light on the recording surface of the disk, and a light receiving element for receiving the laser light reflected by the disk are mounted. Yes. The moving direction of the OPU is the same as the moving direction of the disk tray 73 (reciprocating movement between the front side and the rear side).

The spindle motor 42 is a motor that rotates the chucked disk. The operation of raising and lowering the traverse assembly 41 (TAU 49) mounted on the spindle motor 42 for chucking (for disk reproduction or the like) will be described later.

The lever base plate 39 is a power transmission member attached to the end of the traverse assembly 41 (specifically, the end on the front side), and in conjunction with the movement of the cam cylinder 29 described later, the traverse assembly 41 Is raised and lowered. The traverse assembly 41 to which the lever base plate 39 is attached may be expressed as the traverse assembly 41 (that is, a combination of both (the lever base plate 39 and the traverse assembly 41) is expressed as the traverse assembly 41. It does not matter.) Details (shape, etc.) of the lever base plate 39 will be described later.

The driving force transmission gear group 43 includes a driving motor (DC motor) 61 provided in the LCU 69.
The gear that transmits the driving force from the OPC for the reciprocating movement of the OPC and the cam cylinder 2 described later
9 is configured to include a gear and the like for transmission.
<About the loader chassis unit>
The LCU 69 is configured to include a loader chassis (main body chassis) 59, a drive motor 61, and a cam cylinder 29. As shown in FIG.
It is a main body chassis that accommodates the TAU49. The drive motor 61 and the cam cylinder 29 are mounted.

The drive motor 61 is a power source for reciprocating the OPC and reciprocating the cam cylinder 29.

The cam cylinder 29 is a groove rail 51 (described later; see FIG. 11) provided on the front plane of the loader chassis 59 in a direction perpendicular to the moving direction of the disk tray 73.
It can be reciprocated along the groove rail 51. Specifically, the power of the drive motor 61 can be reciprocated by receiving the power through the drive force transmission gear group 43. The details (shape, etc.) of the cam cylinder 29 will be described later.
[Raising and lowering the traverse assembly unit]
Here, the elevating mechanism of the TAU 49 will be described. TAU49 is a loader chassis 5
The lever base plate 39 that is interlocked with the movement of the cam cylinder 29 provided at 9 moves up and down to move up and down. First, the components and shapes of the cam cylinder 29, the lever base plate 39, the loader chassis 59, and the like will be described in more detail, and then the lifting process of the traverse assembly 41 will be described.
<Details about cam cylinder>
Here, the cam cylinder 29 will be described with reference to FIGS. FIG. 6 is a plan view showing the front, upper surface, and left and right side surfaces, and FIG. 7 is an enlarged front view of the cam cylinder 29.

As shown in FIGS. 6 and 7, the cam cylinder 29 is configured to include a cam cylinder main body (CC main body) 21, a cam groove 22, and a rack 23.

The CC main body 21 constitutes the skeleton of the cam cylinder 29. When the cam cylinder 29 is fitted into the groove rail 51, the cam groove 22 has two opening grooves 22a and 22b (upper opening) that become horizontal slits at respective positions on the upper and lower sides (both ends) in the vertical direction. Groove 22a / lower opening groove 22b) and an inclined opening groove 22c connecting them.
A protrusion engaging portion 33 of a lever base plate 39, which will be described later, is inserted into the cam groove 22, and the lever base plate 39 is moved when the cam cylinder 29 moves so that the protrusion engaging portion 33 is positioned in the upper opening groove 22a. The lever base plate 39 is lowered when it moves up and moves so that the protrusion engaging portion 33 is positioned in the lower opening groove 22b (details will be described later).

The rack 23 receives power from the drive motor 61 via the drive force transmission gear group 43. With this power, the cam cylinder 29 can reciprocate along the groove rail 51 of the loader chassis 59.
<Details about lever base plate>
Here, the lever base plate 39 will be described with reference to FIGS. FIG. 8 is a plan view showing the front surface, the upper surface, and the left and right side surfaces, and FIG. 9 is a plan view showing the right side surface and the lower surface.

As shown in FIGS. 8 and 9, the lever base plate 39 includes a lever base plate main body portion (RBP main body portion) 31, a connecting portion 32, a protrusion engaging portion 33, a resin spring (elastic spring) 35, and a lift track piece 36. It is configured to include.

The RBP main body 31 forms a skeleton of the lever base plate 39. Connecting part 32
Is a location connected to the traverse assembly 41. For example, in the present invention, two columnar connecting portions 32 projecting from the RBP main body portion 31 toward the traverse assembly 41 are provided, and the connecting portions 32 at both ends of the two connecting portions 32 are connected to the traverse up. See 41
(For example, screwing with screws), the two (lever base plate 39 and traverse assembly 41) are connected.

The protrusion engaging portions 33 and 33 are columnar protrusions that protrude from the RBP main body portion 31 toward the front side when the lever base plate 39 is fitted into an elevating opening 52 described later. Thus, it is inserted into the cam grooves 22 and 22 of the cam cylinder 29. Therefore, as the cam cylinder 29 moves, the protrusion engaging portions 33 and 33 move along the cam grooves 22 and 22 (details will be described later). The protrusion engaging portion 33 is provided with a locking piece 33a so as not to drop off from the cam groove 22.

The resin spring 35 hangs substantially vertically from the support portion 35a protruding in a convex shape or the like from the upper portion on the surface side of the RBP main body portion 31 provided with the protrusion engaging portion 33, and from the tip of the support portion 35a. It is composed of a hanging part 35b. The drooping portion 35
A bulging portion 35c protrudes toward the inner side (the center side of the lever base plate 39) at the tip of b.

When the resin spring 35 is fitted into a vibration suppression groove 3 of a loader chassis 59 described later, the bulging portion 36 c is pressed by the holding rib 2 that constitutes the vibration suppression groove 3. Then, by the urging force resulting from the repulsive force at that time (by the elastic force of the resin spring 35),
The lever base plate 39 is fixed to the loader chassis 59.

The elevating orbit piece 36 is a projecting orbital body provided on the side of the RBP main body 31 so as to extend along the vertical direction while projecting toward the side. The loader chassis 59 is adapted to be fitted into the elevating track groove 53.
<Details about the loader chassis>
Here, the loader chassis 59 will be described with reference to FIGS. 10, 11, and 1. FIG.
FIG. 11 is a plan view showing a front surface, an upper surface, and left and right side surfaces, and FIG. 11 is an enlarged front view of the loader chassis 59. FIG. 1 is a partially enlarged view seen from the arrow KK ′ in FIGS.

As shown in FIG. 11, in addition to the groove rail 51 described above, the loader chassis 59 is fitted with a lever base plate 39 at a position facing the rear side from the groove rail 51, and can reciprocate along the vertical direction. An elevating opening 52 is provided.

The elevating opening 52 is an opening that allows the lever base plate 39 itself to move up and down. In particular, the elevating orbit groove 53 for securing the elevating orbit and the guide groove 54 in which the protrusion engaging portion 33 of the lever base plate 39 is fitted. And the retaining rib 2 and the deformation | transformation suppression rib 1 are provided.

The elevating raceway groove 53 is a concave or the like raceway groove provided along the vertical direction on both side wall portions (side wall portions) of the elevating opening 52, and the elevating raceway piece 3 of the lever base plate 39.
6 is to be fitted. Therefore, the lever base plate 39 can be moved up and down while suppressing fluctuations in the horizontal direction (shake; particularly reciprocation fluctuations from the front side to the rear side).

The guide groove 54 is a groove provided in the vertical direction so as to communicate from the lift opening 52 toward the groove rail 51, and the protrusion engaging portion 33 of the lever base plate 39 is sandwiched between the grooves. Yes. Therefore, the movement in the vertical direction is secured while restricting the movement of the lever base plate 39 to both sides.

As shown in FIG. 1, the holding rib 2 is provided so as to protrude from the upper side to the middle side along the vertical direction of the lifting / lowering opening 52 while projecting from the front wall portion of the lifting / lowering opening 52. The projection is made. The vibration suppressing groove 3 is formed by the holding rib 2 and the side wall portion of the lifting opening 52. Therefore, the resin spring 35 in the lever base plate 39 is fitted into the vibration suppressing groove 3, and further the lever base plate 39.
The vibration suppressing groove 3 sandwiches the resin spring 35 when the pressure rises.

In order to prevent permanent deformation of the resin spring 35 that is frequently elastically deformed by the holding rib 2, the deformation suppressing rib 1 has its resin spring in a direction opposite to the direction in which the holding rib 2 holds the resin spring 35. 35 is a protrusion provided to hold 35. Specifically, it is provided so as to protrude inwardly from the side wall portion of the lifting opening 52 facing the retaining rib 2 (projected).
<Up-and-down process of traverse assembly unit>
Here, the raising / lowering process of the traverse assembly unit 49 (traverse assembly 41) is demonstrated. FIG. 12 illustrates a state in which the lever base plate 39 is inserted into the lift opening 52 of the loader chassis 59. In this figure, the cam cylinder is not shown for convenience.

Further, FIGS. 13 (a) and 14 (a) are schematic configuration diagrams as viewed from an arrow AA ′ in FIG. 12 in which only the cam cylinder 29 and the lever base plate 39 are clearly shown for convenience. 13 (b) and 14 (b) are schematic configuration diagrams viewed from the arrow BB 'in FIG. 12 in which only the loader chassis 59 and the lever base plate 39 are clearly shown for convenience. In addition,
For convenience, the resin spring 35, the retaining rib 2, and the deformation suppressing rib 1 are illustrated by being filled with thick lines. In FIGS. 13 and 14, the connecting portion is omitted for convenience.

FIG. 13 shows a state where the lever base plate 39 (traverse assembly 41) is lowered, and FIG. 14 shows a state where the lever base plate 39 is raised.

As shown in FIG. 13A, when the lever base plate 39 is positioned on the lower side (that is, when the traverse assembly 41 is lowered), the protrusion engaging portion 33 of the lever base plate 39 is moved into the cam groove. 22 is located in the lower opening groove 22b.

On the other hand, as shown in FIGS. 13 (a) and 14 (a), when the cam cylinder 29 slides in the direction of the arrow X by the driving force of the driving motor 61, the protrusion engaging portion 33 is formed in the lower opening groove 22.
It moves from b to the upper opening groove 22a through the inclined opening groove 22c.

At this time, as shown in FIG. 14B, the lever base plate 39 is moved in the vertical direction without fluctuation in the horizontal direction due to the restriction by the guide groove 54 (the lifting opening 52 and the lifting track groove 53) in the loader chassis 59. To rise. Further, a resin spring 35 is provided between the holding rib 2 in the loader chassis 59 and the side wall (side wall) of the lift opening 52 facing the holding rib 2 (that is, the vibration suppressing groove 3). I will enter.

In this case, the bulging portion 35c of the resin spring 35 is the retaining rib 2 (wall portion of the vibration suppressing groove 3).
It fluctuates to the side side. That is, the retaining rib 2 is formed with the bulging portion 35c (resin spring 35
) To the side (resin spring 35 is elastically deformed). As a result, a repulsive force (elastic force) accompanying the deformation is generated in the resin spring 35, and conversely, the resin spring 35 presses against the retaining rib 2 (the wall portion of the vibration suppressing groove 3). Therefore, the two resin springs 35 and 35 are
The two retaining ribs 2 of the loader chassis 59 are sandwiched. Then, the lever base plate 39 and thus the traverse assembly 41 are not changed (vibration is suppressed).

On the other hand, when the lever base plate 39 is lowered from the raised state shown in FIG. 14, the cam cylinder 29 is first slid in the arrow Y direction by the driving force of the drive motor 61. Then, the protrusion engaging portion 33 moves from the upper opening groove 22a to the lower opening groove 22b through the inclined opening groove 22c.

At this time, as shown in FIG. 13B, the lever base plate 39 descends in the vertical direction without changing in the horizontal direction, as described above. Furthermore, the vibration suppression groove 3
Accordingly, the resin spring 35 is dissociated.

Further, when the resin spring 35 is lowered, the back side of the bulging portion 35c of the resin spring 35 (one surface on the side of the bulging portion 35c) is inward (biased by the resin spring 35) by the deformation suppression rib 1. The same direction as the direction). That is, the resin spring 35 is deformed from the side to the inside.
<About the action of the deformation restraining rib in the traversing ascending / descending process>
Thus, in the present invention, when the traverse assembly 41 (lever base plate 39) is lowered, the deformation suppressing rib 1 presses the resin spring 35 so as to be deformed inward from the side. That is, the resin spring 35 is pressed in the direction opposite to the elastic deformation direction from the inside to the side of the resin spring 35 when the traverse assembly 41 is raised.

Therefore, even if the traverse assembly 41 repeatedly moves up and down (reciprocating in the vertical direction) tens of thousands of times, the resin spring 3 caused by pressing from the inside to the side by the holding rib 2
5 is mitigated by the pressing from the side to the inside by the deformation suppressing rib 1. That is, the deformation suppressing rib 1 can prevent the deformation of the resin spring 35 when it is raised from becoming permanent deformation.

Therefore, in the present invention, the resin spring 35 can exhibit a vibration suppressing effect over a long period of time. That is, the disk device 89 can prevent vibration for a long period of time.

Further, in the present invention, the vibration suppression groove 3 constituted by the wall portion of the lifting / lowering opening 52 and the retaining rib 2 is formed by providing the retaining rib 2 from the upper part to the middle part of the lifting / lowering opening 52.

Therefore, in the present invention, the resin spring 35 fits into the vibration suppressing groove 3 when the traverse assembly 41 is raised in order to perform disk reproduction or the like. Therefore, when not playing (ie,
When the traverse assembly 41 is lowered), the resin spring 35 is not elastically deformed, and it is possible to prevent permanent deformation.

Further, in the present invention, the deformation suppressing rib 1 corrects the permanent deformation by elastically deforming the resin spring 35 in the same direction as the urging direction of the resin spring 35. This is because the resin spring 35 is elastically deformed in the direction opposite to the biasing direction in order to exert the biasing force.

In the present invention, the deformation suppressing rib 1 is formed on the side wall portion of the lower portion along the vibration suppressing groove 3.
Is provided. This is to cause elastic deformation for preventing permanent deformation when the traverse assembly 41 is lowered.
[Other Embodiments]
The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention. For example, the length of the retaining rib 2 is not limited from the upper part to the middle part of the lift opening 52.

The shape of the resin spring 35 is not particularly limited as long as it can exert an urging force due to a repulsive force accompanying deformation. Further, the shape of the deformation suppressing rib 1 is not particularly limited, and may be a shape that can be deformed so as to relieve the permanent deformation so that the deformation caused by exerting the biasing force is not permanent (permanent deformation). That's fine.

This is useful for a disk device in which a traverse assembly including an OPU or the like moves up and down.

FIG. 12 is a partial view of the loader chassis showing the retaining rib and the deformation suppressing rib in the present invention, and is a partially enlarged view from the arrow K-K ′ in FIGS. 10 and 11 described later. It is a perspective view of the disc apparatus of this invention. It is a top view inside the disk of this invention. (A) is a side surface schematic block diagram which shows the case where a traverse assembly falls, (b) is a side schematic block diagram which shows the case where a traverse assembly raises. It is an enlarged view of E section of Drawing 4 (a). It is a top view which shows the front of the cam cylinder in this invention, an upper surface, and right and left side surfaces. FIG. 7 is an enlarged plan view (front view) from the front of the cam cylinder of FIG. 6. It is a top view which shows the front, the upper surface, and the left and right side surfaces of the lever base plate in the present invention. s It is the top view which showed the right side surface and lower surface of the lever baseplate in this invention. It is a top view which shows the front of the loader chassis in this invention, an upper surface, and a left-right side surface. It is an enlarged front view of the loader chassis of FIG. It is a top view which shows the state which inserted the lever baseplate in the raising / lowering groove | channel of a loader chassis. The lever base plate is shown in a descending state, and (a) is a schematic configuration diagram seen from the arrow AA ′ in FIG. 12 in which only the cam cylinder / lever base plate is clearly shown for convenience. FIG. 13 is a schematic configuration diagram seen from an arrow BB ′ in FIG. 12 in which only the loader chassis / lever base plate is clearly shown for convenience. The lever base plate is shown in a raised state, and (a) is a schematic configuration diagram viewed from the arrow AA ′ in FIG. 12 in which only the cam cylinder / lever base plate is clearly shown for convenience. FIG. 13 is a schematic configuration diagram seen from an arrow BB ′ in FIG. 12 in which only the loader chassis / lever base plate is clearly shown for convenience. It is the side schematic structure figure explaining raising / lowering of the traverse assembly in the conventional disc apparatus. It is a top view which shows the state which inserted the lever baseplate in the raising / lowering groove | channel of the loader chassis in the conventional disk. The lever base plate is shown in a descending state, and (a) is a schematic configuration diagram viewed from the arrow LL ′ in FIG. 16 in which only the cam cylinder / lever base plate is clearly shown for convenience. FIG. 13 is a schematic configuration diagram viewed from an arrow MM ′ in FIG. 12 in which only a loader chassis / lever base plate is clearly shown for convenience. The lever base plate 39 is shown in a raised state, and (a) is a schematic configuration view as viewed from the arrow LL ′ in FIG. 12 in which only the cam cylinder / lever base plate is shown for convenience. FIG. 17 is a schematic configuration diagram viewed from an arrow MM ′ in FIG. 16 in which only a loader chassis lever base plate is clearly shown for convenience.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Deformation suppression rib 2 Stopping rib 3 Vibration suppression groove 22 Cam groove 22a Upper side opening groove (cam groove)
22b Lower opening groove (cam groove)
22c Inclined opening groove (cam groove)
29 Cam cylinder 33 Projection engagement part 35 Resin spring (elastic spring)
39 Lever base plate 41 Traverse assembly 49 Traverse assembly unit 51 Groove rail 52 Lifting opening 54 Guide groove 59 Loader chassis 69 Loader chassis unit 72 Drive device 89 Disk device

Claims (2)

A main body chassis provided with a guide groove and a lifting opening;
A cam cylinder provided in the main body chassis so as to be reciprocally slidable;
A lever base plate that has a cam groove provided in the cam cylinder and a protrusion engaging portion that is inserted into the guide groove, and is fitted into the elevating opening,
A disk device including the lever base plate and a traverse assembly capable of moving up and down and reciprocating along the guide groove in conjunction with reciprocating sliding movement of the cam cylinder by using one end of the main body chassis as a fulcrum. In
By providing the retaining ribs from the upper part to the middle part in the lifting opening, a vibration suppressing groove composed of the wall part of the lifting opening and the retaining rib is formed, and the wall in the lower part along the vibration suppressing groove The part is provided with a deformation suppression rib,
Further, an elastic spring fitted into the vibration suppression groove while elastically deforming by contacting the holding rib is provided on the lever base plate,
When the traverse assembly is raised, by pressing the wall portion of the vibration suppression groove by the urging force due to the repulsive force of the elastic deformation by the elastic spring, the traverse assembly is fixed,
A disk device characterized by correcting the permanent deformation of the elastic spring by elastically deforming the elastic spring in the same direction as the biasing direction of the elastic spring when the traverse assembly is lowered. In a disk device including a traverse assembly provided so as to be capable of moving up and down and reciprocating by rotational movement about one end of the main body chassis,
While the body chassis is provided with a vibration suppression groove,
The traverse assembly is provided with an elastic spring that is elastically deformed by being fitted into the vibration suppression groove and presses the wall portion of the vibration suppression groove by a biasing force caused by a repulsive force accompanying the elastic deformation. ,
Furthermore, the main body chassis is provided with a deformation suppression rib that causes a deformation that reduces the elastic deformation of the elastic spring that presses the wall portion of the vibration suppression groove ,
When the traverse assembly is raised, the elastic spring fits into the vibration suppression groove.
In addition, the vibration suppression groove is formed at the rising position in the lifting direction,
The deformation suppression rib elastically deforms the elastic spring in the same direction as the biasing direction of the elastic spring.
Let
The deformation restraining rib is configured to bias the elastic spring when the traverse assembly is lowered.
In order to elastically deform the elastic spring in the same direction as the direction, formed at the lowered position in the lifting direction
Disk apparatus characterized by being.

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