JP2002008345A - Optical disk device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce the number of parts, to more simplify structure, to improve durability against an action of shock or vibration and to reduce costs. SOLUTION: A traverse base 20 which is formed as a body separated from a device base 10 and is vertically turnable is provided. When the traverse base ascends, the end surface of a side shoe 99 which is half fixed to the device base is abutted on the side surface of the traverse base, vibrations in the horizontal direction of the traverse base caused by a rotation of a disk are controlled and also prevention of the vibrations in the vertical direction against shock or vibration required for the traverse base is performed. When the traverse base descends, an abuttment between the end surface of the side shoe and the side surface of the traverse base is disengaged, and whereby retracting and ejecting operations of the disk are not influenced.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information recording medium, such as a compact disk (so-called CD), for recording an information signal and / or reproducing the recorded information signal. (Hereinafter, simply referred to as a disk device as appropriate).

[0002]

2. Description of the Related Art As such a disk drive, a unit provided with a turntable, a motor for rotating the turntable, and a motor for applying a driving force to an optical pickup and a pickup drive mechanism is provided with a base constituting a base of the apparatus main body. Conventionally, a cushioning member is interposed between the intermediate bases arranged between them and supported within the elastic range so as to be able to float up and down with respect to the intermediate bases so that the anti-vibration effect can be obtained while playing the disc. Is generally well known. In this type of disk drive, an urging force is applied to the intermediate base for the purpose of suppressing the vibration of the unit during the disk rotation performance, and the urging force is not applied to the unit itself. To improve durability.

[0003]

In the above-mentioned conventional disk drive, a base and a turntable which constitute a base of the apparatus main body in order to achieve both a swing of the unit during rotation of the disk and an improvement in durability against the effects of shock and vibration. And an intermediate base is arranged between the motor for rotating the turntable, the unit provided with the motor for applying a driving force to the optical pickup and the pickup driving mechanism, and the intermediate base for suppressing the vibration of the unit when the disk rotates. Since a component for providing an urging force is required, it is disadvantageous for simplification of the structure and cost reduction.

Therefore, the present invention can reduce the number of parts, simplify the structure, and
It is a basic object of the present invention to provide a disk device capable of improving the durability against the effects of shocks and vibrations and reducing the cost.

[0005]

According to a first aspect of the present invention, there is provided a turntable for rotatably supporting an optical disk, and an information signal written on the optical disk rotated by the turntable. And / or an optical pickup for reading out information signals recorded on the optical disk, a pickup drive mechanism for reciprocatingly moving the optical pickup between the inner peripheral side and the outer peripheral side of the optical disk, and an optical disk above the turntable. A disc loading mechanism for reciprocatingly transferring between a first position and a second position outside the apparatus; a first motor for rotating the turntable; a driving force for the optical pickup driving mechanism and the disc loading mechanism; A second motor capable of rotating forward and reverse, a first base forming a base of the apparatus main body, A second base supported so as to be vertically movable or rotatable with respect to the base, a first cushioning member having elasticity for supporting one end of the second base to the first base, and the other end of the second base Side near the second
A cam gear having an outer peripheral portion with a cam groove for raising and lowering the other end of the base; a second cushioning member having elasticity for supporting the cam gear so as to float on the first base; An optical disc device provided with a third cushioning member having a resilience for abutting against a side surface and stopping horizontal deflection with respect to the first base, wherein the second base is provided within an opening formed in the first base. The optical pickup, the turntable, the first motor rotating the turntable, and the optical pickup supported on the first base in a floating manner within the elastic range of the second and third cushioning members. And a second motor capable of rotating forward and backward for applying a driving force to the pickup driving mechanism, wherein one of the third buffer members is fixed to the first base, and the other is an upper part with respect to the first base. Wherein the disc loading mechanism is disposed on the first and / or second base, the disc loading mechanism includes a loading drive gear train including a plurality of gears, and The cam gear is rotated by the final output gear of the loading drive gear train meshing with the outer peripheral tooth portion of the cam gear, and the other end of the second base is connected to the first base about one end of the second base. The final output gear of the loading drive gear train always meshes with the outer gear teeth of the cam gear even when the second base is raised and lowered, and the other end of the second base is raised when the second base is raised. The second base and the cam gear are integrated with each other by the projection on the side engaging the cam groove of the cam gear. The vibration damping is performed in the vertical direction with respect to the first base, and the third cushioning member abuts on the side surface of the second base, so that the third cushioning member is the first base of the second base. And the vertical vibration of the second base with respect to the first base is stopped. When the second base is lowered, the third buffer member comes into contact with the side surface of the second base. , And does not affect the disk loading operation of reciprocatingly transferring the optical disk between the first position above the turntable and the second position outside the apparatus.

[0006]

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 is an overall perspective view showing an assembled state of an optical disk device (hereinafter, referred to as a disk device or simply an apparatus) according to the present embodiment, FIG. 2 is an exploded perspective view of the disk device, and FIGS. FIG. 3 is an explanatory diagram showing a part of the perspective view of FIG. 2 in an enlarged manner. As shown in these drawings, the disk device 1 according to the present embodiment includes a device base 10 as a mounting base for main components of the device 1 and a support member that supports most of the drive mechanism of the device 1. Traverse base 2
0. The overall shape of the device base 10 is formed in a substantially rectangular frame shape in a plan view. As shown in FIG. 5, the traverse base 20 is attached to an inner opening 10H of the device base 10. The device base 10 and the traverse base 20 correspond to a “first base” and a “second base”, respectively.

[0007] In the disk device 1, the tray 55 for mounting and transferring a disk as an information recording medium, for example, a compact disk (so-called CD), is provided on the device base 1.
It reciprocates in the oblique direction in FIGS. 1 and 2 along the frame 0. That is, when the disk in the apparatus 1 is pulled out to the outside, the tray 55 moves diagonally downward and left in FIGS. 1 and 2, and when the disk is drawn (inserted) into the apparatus 1 from the outside, the tray 55 is moved downward. It moves obliquely upward to the right in FIGS. In the present embodiment, the side from which the disk (that is, the tray 55) is pulled out from the inside of the apparatus 1 (the lower left side in FIGS. 1 and 2) is referred to as the front side of the disk apparatus 1, and vice versa. 1 (the upper right side in FIGS. 1 and 2) is referred to as the rear side of the disk device. The upper and lower sides in FIGS. 1 and 2 are referred to as the upper and lower sides of the device 1.

The rear part of the device base 10 (FIGS. 1 and 2)
A pair of left and right traverse base support shafts 11 are erected at the upper right portion of the traverse base. Notches 21 are respectively formed at both corners at the rear end of the traverse base 20, and rubber bushes 29 (floating bushes) having, for example, rubber elasticity are attached to the notches 21. Then, by fitting these floating bushes 29 to the traverse base support shaft 11, respectively, the rear portion of the traverse base 20 is
The traverse base support shaft 11 is supported so as to be vertically rotatable with respect to the apparatus base 10 about a horizontal straight line Lh (see FIG. 5) connecting the centers of the distal ends of the left and right traverse base support shafts 11. Further, the rear portion of the traverse base 20 is within a certain range with respect to the device base 10 via the left and right floating bushes 29 (that is, the floating bush 2).
9 (within an elastic range of 9) and supported in a floating state (floating state). In FIG. 5, the left and right floating bushes 29 are not shown in order to clearly show the traverse base support shaft 11 and the notch 21.

On the other hand, as can be clearly understood from FIGS. 4 and 5, a concave portion 12 having a circular peripheral shape is formed at the front edge of the inner opening 10H of the device base 10. At the center of the bottom surface of the concave portion 12, a pivot shaft 12 s is erected, and a substantially cylindrical gear member 30 is mounted on the pivot shaft 12 s.
The center boss 31 of the (cam gear) is rotatably fitted. The bottom of the cam gear 30 and the recess 1 of the device base 10
A coil-shaped spring member 39 (floating spring) is interposed between the bottom surface of the spring 2 and the bottom surface of the spring 2. The cam gear 30 has a central boss portion 31 inserted through the pivot shaft 12s, and a screw member 37 (stop) through a collar member 38 (floating collar) made of rubber, for example, at the tip of the pivot shaft 12s. Screw) is screwed.

That is, the upper side of the cam gear 30 is stopped by the floating collar 38, and the lower side is supported by the floating spring 39.
It is housed in the concave portion 12 of the device base 10 while being sandwiched from above and below by 39, and can float within a certain range with respect to the device base 10 (that is, within the elastic range of the floating collar 38 and the floating spring 39). (Floating state).

[0012] The outer periphery of the cam gear 30 is shown in FIGS.
As shown in detail in FIG. 14, a tooth portion 30g (outer peripheral tooth portion) having tooth traces in the vertical direction (that is, parallel to the longitudinal axis Lg of the cam gear 30) is provided, and the upper and lower horizontal groove portions 33a, 33c are provided. And a cam groove 33 having an oblique groove portion 33b. In the outer peripheral portion of the cam gear 30, a missing tooth portion 34 in which the tooth portion 30g is not cut is provided. On the other hand, the front end of the traverse base 20 has a protrusion 20 slidably engaged with the cam groove 33.
P (see FIGS. 2 and 3) is provided, and the front portion of the traverse base 20 is provided with the protrusion 20P.
3 is supported by the apparatus base 10 via the cam gear 30.

Also, an inner opening 10H of the device base 10 is provided.
2, 4 and 5, a claw-shaped portion 10a is formed at the front left portion of the device base 10, and the side shoe 99 is fixed at only one end to the claw-shaped portion 10a of the device base 10, and Is supported in such a manner that it is free to flex vertically (Lt direction) with respect to the device base 10. As shown in FIG. 6, the traverse base 20 is in contact with the other end of the side shoe 99 only when ascending, that is, during performance, and can float within a certain range with respect to the device base 10 (ie, within the elastic range of the side shoe 99). (Floating state).

The floating collar 38 and the floating spring 39 are formed by the left and right floating bushes 29 described before the "second cushioning member" of the present invention.
However, the “first buffer member” side shoe 99 described in the claims of the present application corresponds to the “third buffer member” described in the claims of the present application. In addition, the floating bush 29,
The material of the floating collar 38 and the side shoes 99 is not limited to the above-mentioned rubber, and various other materials having a predetermined elasticity such as a soft synthetic resin can be used. .

That is, the traverse base 20 is
As shown in FIGS. 6 to 9, the rear part is via a floating bush 29, the front part is via a cam gear 30 supported by a floating collar 38 and a floating spring 39, and the front left part is a side shoe. 99
Within a certain range with respect to the device base 10 via
The floating bush 29, floating collar 38, floating spring 39 and side shoe 99
(Within the elastic range), and is supported in a floating state (floating state).

The effect of the side shoe 99 will be described in detail. Side shoe 99 is traverse base 20
The traverse base 20 comes into contact with the side surface of the traverse base 20 only when the traverse base 20 rises, that is, when performing, and serves to stop the left and right, front and rear vibrations and vibration noise of the traverse base 20 caused by the rotation of the disc. This is because the side shoes 99 are hardly deformed in the tensile direction Ls and in the compression direction Ls, and the same effect can be obtained regardless of what kind of material, for example, soft synthetic resin or the like having predetermined elasticity. .

At the same time, the side shoes 99 allow the traverse base 20 to float within a certain range with respect to the apparatus base 10 (ie, within the elastic range of the floating bush 29, the floating collar 38, the floating spring 39 and the side shoes 99) (floating). State). This is the tension, compression direction Ls
This is because, in the direction perpendicular to the direction, that is, the shearing direction Lt, the material flexes freely according to the principle of the bending of the cantilever, and is made of any material, such as a soft synthetic resin, having a predetermined elasticity. And other various things can be used.

As described above, the traverse base 20 is
Rather than being rigidly supported (rigidly) with respect to the device base 10, the device base 10 is supported within the elastic range of each of the cushioning members (the floating bush 29, the floating collar 38, the floating spring 39 and the side shoe 99). Are supported in a floating state with respect to the disk device 1, even if the side shoe 99 abuts on the traverse base 20 when an impact load is applied to the disk device 1 or there is a vibration input, the cushioning members 29, 38 are provided. , 3
9 and 99 can absorb shock or vibration,
These impact loads or vibration forces can be prevented from directly acting on the respective mechanical components of the traverse base 20 from the device base 10. That is, it is possible to improve the durability of the disk device 1 against the effects of shock and vibration. Further, the vibration and vibration of the traverse base 20 in the left-right and front-rear directions when the disk is rotating can improve the quality of the disk device 1 by vibrating the side shoes 99 and preventing the vibration.

On the lower surface side of the traverse base 10,
First and second two electric motors 3 and 4 (for example, see FIGS. 2 and 3) and a circuit board 2 having a control circuit for controlling the driving of these motors 3 and 4 are fixed. on the other hand,
The disc 9 (FIG. 5)
9) is disposed on the upper surface, and the turntable 5 is connected to an output shaft 3s (see FIG. 3) of the first motor 3 (spindle motor). On the upper surface side of the traverse base 10, an optical pickup 6 for writing an information signal on the disk 9 and / or reading out the recorded information signal is attached, and various drives for operating the disk device 1 are provided. A mechanism is arranged.

Hereinafter, these driving mechanisms will be described.
As can be clearly understood from FIGS. 3 and 5, the traverse base 20 is formed with an opening 20H extending in the front-rear direction (vertical direction in FIG. 5), and the right and left sides of the opening 20H move the optical pickup 6 in the front-rear direction. A pair of pickup guide grooves 22 and 23 for guiding the operation are located. The turntable 5 is more preferably located near or at the front of the front ends of the pickup guide grooves 22, 23 and the opening 20H. The optical pickup 6 is supported by the traverse base 20 movably in the front-rear direction by the left and right legs 6f slidably engaging the pickup guide grooves 22, 23, respectively. Note that a flexible connection member (for example, a flexible printed wiring board: not shown) that electrically connects the optical pickup 6 and the circuit board 2 is inserted through the opening 20H.

The pair of pickup guide grooves 22,
A rail member 24 (guide rail) extending parallel to the guide groove 23 is arranged on one side of the pickup guide groove 23 on one side (the right side in FIGS. 3 and 5) of the guide rail 24. A rack member 40 (feed rack) is slidably engaged in the longitudinal direction.
The feed rack 40 includes one end of the optical pickup 6.
(Right ends in FIGS. 3 and 5) are connected by a screw member 49 (see FIG. 3). And the feed rack 40
Slides on the guide rail 24 so that the optical pickup 6 can reciprocate in the front-rear direction while being guided by the guide grooves 22 and 23.

To drive the feed rack 40 to reciprocate the optical pickup 6 in the front-rear direction, the traverse base 20 is provided with a gear train 51 (rack drive gear train) composed of a group of gears. I have. As shown in detail in FIGS. 10 to 11, the rack drive gear train 51 includes a motor gear 4G fixed to the output shaft 4s (see FIG. 3) of the second motor 4, and a large-diameter input gear meshing with the motor gear 4G. A first traverse gear 52 having a gear 52A (first traverse input gear) and a small-diameter output gear 52B (first traverse output gear) integrally provided above the gear 52A.
And a large-diameter input gear 53A (second traverse input gear) that meshes with the first traverse output gear 52B and a small-diameter output gear 53B (second
Second traverse gear 53 having a traverse output gear)
It is composed of The second traverse output gear 53 </ b> B meshes with the passive rack portion 41 of the feed rack 40.

When the second motor 4 is driven and the motor gear 4G rotates at a predetermined rotation speed, for example, in the counterclockwise direction in FIGS. 10 to 11, this rotation is performed by the rack drive gear train 51 at a predetermined reduction ratio. The speed is reduced and transmitted to the output side, and the final output gear 53B (second traverse output gear) rotates counterclockwise at the reduced rotation speed. As a result, the feed rack 40 moves forward (see FIG. 10) along the guide rail 24 at a predetermined feed speed set in advance.
To the lower side in FIG. 11). When the second motor 4 is driven to rotate in the direction opposite to the above case, the moving direction of the feed rack 40 is also reversed.

As described above, the moving direction of the feed rack 40 (therefore, the optical pickup 6) is switched by switching the direction of rotation of the second motor 4 between forward and reverse, so that it can reciprocate in the front-rear direction. ing. still,
Basically, the feed rack 40 and the rack drive gear train 51
Thus, an optical pickup driving mechanism for reciprocatingly moving the optical pickup 6 between the inner peripheral side and the outer peripheral side of the disk 9 is constituted, and this corresponds to the “optical pickup driving mechanism” described in the claims of the present application. ing. In addition, the pickup guide grooves 22 and 23 and the guide rail 24 assist driving of the optical pickup 6.

At the front of the device base 10, a tray 5
A tray drive gear 56 for reciprocating the disk 5 between a disk loading / unloading position (unloading position) on the tray 55 on the front surface of the device 1 and a disk loading / unloading position (loading position) on the turntable 5 inside the device 1 is provided. Are located. The loading position and the unloading position correspond to the “first position” and the “second position”, respectively, as described in the claims of the present application.

The tray drive gear 56 has rack teeth 55g (tray rack teeth: FIG. 1) provided on the back surface of the tray 55.
2 to 13), a large-diameter output gear 56B meshing with
The small-diameter input gear 5 located below the output gear 56B
6A. The tray drive gear 56 is located on the side of the cam gear 30, and its input gear 56A
Are engaged with the outer peripheral teeth 30g of the cam gear 30.

The tray 55 and the tray rack teeth 55
g and the tray drive gear 56 for disc loading for reciprocatingly transferring the disc 9 between a loading position (first position) above the turntable 5 and an unloading position (second position) outside the apparatus 1. The mechanism is configured, and corresponds to a “disk loading mechanism” described in the claims of the present application.

In order to drive the tray 55 to transfer the disk 9 between the unloading position and the loading position, a gear train 61 composed of a group of gears is used.
(Loading drive gear train: see FIGS. 10 to 11) is provided on the upper surface side of the traverse base 20. The loading drive gear train 61 includes a motor gear 4G fixed to the output shaft 4s of the second motor 4 and a motor gear 4G.
A first loading gear 62 having a large-diameter input gear 62A (first loading input gear) meshing with G and a small-diameter output gear 62B (first loading output gear) integrally provided above the first input gear 62A; A second loading gear 63 having a large-diameter input gear 63A (second loading input gear) meshing with the loading output gear 62B and a small-diameter output gear 63B (second loading output gear) integrally provided above the input gear 63A; The large-diameter third loading gear 64 meshes with the second loading output gear 63B. The third loading gear 64 meshes with the outer peripheral tooth portion 30g of the cam gear 30.

The above-described optical pickup mechanism and disc loading mechanism operate by the rotation of the second motor 4, but the trigger lever 7 is operated so as not to be driven simultaneously.
1 switches the transmission of the driving force.

The tooth trace shape in the longitudinal section of the outer peripheral tooth portion 30g of the cam gear 30 is preferably formed to be curved in a side view, as shown in detail in FIG. This curve shows the traverse base 20 and the cam gear 30
When the traverse base 20 is pivoted up and down with respect to the device base 10 with the rear end side as a fulcrum in a state where the third loading gear 64 is attached to the device base 10 (see FIGS. 8 and 9). It is set so as to form a part of an arc-shaped curve Cg ′ along the rotation locus Cg at the front end.

Therefore, even when the traverse base 20 is rotated and inclined with respect to the apparatus base 10 (shown by broken lines in FIG. 16 and FIG. 9), the third loading gear 64 on the traverse base 20 and the outer periphery of the cam gear 30 The teeth 30g can reliably and smoothly mesh with each other. In addition, the tooth trace shape in the longitudinal section of the outer peripheral tooth portion 30 g of the cam gear 30 is represented by an axis L in the longitudinal direction of the cam gear 30.
It may be a straight line that is inclined with respect to g and approximates the curve Cg ′. 8 and 9, the second loading gear 63 is not shown in order to clearly show the third loading gear 64 meshing with the outer peripheral tooth portion 30g of the cam gear 30.

As described above, the outer peripheral teeth 30 of the cam gear 30
The tooth trace shape in the vertical cross section of g indicates the rotation when the third loading gear 64, which is the final output gear of the loading drive gear train 61, rotates in the vertical direction with the rotation of the traverse base 20. Even if the loading drive gear train 61 is turned in the vertical direction along with the turning operation of the traverse base 20, the final output thereof is set because it is set in an arc shape following the trajectory or in a straight line shape approximating this arc. The gear 64 can reliably and smoothly mesh with the outer peripheral tooth portion 30g of the cam gear 30.
Basically, the loading drive gear train 61 and the worm gear 30 (specifically, the outer peripheral teeth 30g) constitute a loading drive mechanism for driving the disc loading mechanism, which is described in the claims of the present application. This corresponds to a “loading drive mechanism”.

On the other hand, the upper surface of the front end portion of the traverse base 20 has a cam groove 27 (arc groove) having an arc shape in plan view.
Is provided. An engagement protrusion 32p is provided on the back surface of the hook portion 32 of the cam gear 30, and the engagement protrusion 32p is engaged with the arc groove 27, so that the traverse base 20 can be moved in the front-rear direction with respect to the device base 10. Is regulated. Further, as described above, the projection 20p provided at the front end of the traverse base 20 is
, The vertical positional relationship of the front end of the traverse base 20 with respect to the device base 10 is accurately determined.

In the present embodiment, as described above, the traverse base 20 is configured to rotate up and down around the rear end, and the protrusion 20P at the front end is provided.
Are engaged with a cam groove 33 formed in the cam gear 30. The cam groove 33 includes upper and lower horizontal groove portions 33a and 33a.
3c and an oblique groove portion 33b connecting the two (see FIG. 15). Depending on which of the three groove portions 33a to 33c the projection 20P engages (that is, the rotation direction of the cam gear 30). And the amount of rotation), the vertical position of the front end of the traverse base 20 is determined.
Therefore, the traverse base 20 rotates up and down around its rear end in accordance with the direction and amount of rotation of the cam gear 30.

As described above, the traverse base 20
Is supported so as to be rotatable up and down with respect to the apparatus base 10 about one end thereof. Specifically, the cam gear 30 is rotated by the power transmission from the loading drive gear train 61, and the other end of the traverse base 20 is moved up and down. Is rotated in the vertical direction.

Then, as shown in FIG.
When 0 further rotates in the counterclockwise direction, the engagement position of the front end protrusion 20P of the traverse base 20 with the cam groove 33 moves from the upper horizontal groove 33a to the oblique groove 33b,
It is set to move to the lower horizontal groove 33c.

That is, in the state shown in FIG. 10, the projection 20P is engaged with the upper horizontal groove 33a, and as shown in FIG. The upper surface is maintained substantially flush. Therefore, the disk 9 can be placed on the turntable 5 and held horizontally with the clamper 96. This state is a playing state, in which the side shoe 99 abuts against the side surface of the traverse base 20 to stop the left and right, front and rear vibrations and vibration noise of the traverse base 20 caused by the rotation of the disc,
The device base 10 also functions to perform vertical vibration isolation for the device base 10.

Then, as shown in FIGS. 10 to 13, the feed rack 40 moves forward, and when the amount of movement reaches a certain amount or more, the cam gear 30 starts rotating, and the front end projection 20P of the traverse base 20 is moved. The oblique groove 33 of the cam groove 33
Through b, it engages with the lower horizontal groove 33c. As a result, as shown in FIG.
It pivots downward about its rear part and tilts with respect to the device base 10. In this state, since the turntable 5 is moving downward in an inclined state, the disk 9 can be externally provided from the apparatus 1.
When the disk 9 is pulled above the turntable 5 and when the disk 9 is ejected from above the turntable 9 to the outside of the apparatus 1, the disk 9 does not interfere with the turntable 9. This position is the side shoe 9
9 and the side of the traverse base 20 are out of contact with each other, and do not affect a series of operations.

In this case, the outer gear 30g of the cam gear 30
Means that the traverse base 20 has rotated downward to a predetermined position with respect to the device base 10 (a position where the front end projection 20P of the traverse base 20 engages with the lower horizontal groove 33c via the oblique groove 33b of the cam groove 33). In this state, it meshes with the tray drive gear 56 of the disc loading mechanism,
The tray 55 is driven in a state where the traverse base 20 is surely rotated downward. Therefore, it is possible to reliably prevent the tray 55 (that is, the disk 9) from interfering with the turntable 5 when the tray is driven (that is, when the disk is transported).

As described above, according to the present embodiment, the traverse base 20 to which the turntable 5 is attached separately from the device base 10 is supported by the device base 10 so as to be rotatable in the vertical direction. By rotating one motor (second motor 4) continuously in the forward direction (first rotation direction) or the reverse direction, the moving operation of the optical pickup 6, the elevating operation of the turntable 5, and the disc 9 is performed almost continuously in this order or almost continuously in the reverse direction in the reverse direction.
When loading and unloading, it is possible to avoid interference with the turntable 5 without moving the disk 9 in the vertical direction.

The disc 9 can be fixed (clamped) and released from the turntable 5 by utilizing the operation of rotating the traverse base 20 to which the turntable 5 is attached in the vertical direction with respect to the apparatus base 10. Will be possible.

The present invention is not limited to the above-described embodiment, but may be modified without departing from the scope of the invention.
It goes without saying that various improvements or design changes are possible.

[0042]

According to the invention of the present application, the third cushioning member, one of which is fixed to the first base and the other is attached to the first base so as to be able to bend in the vertical direction, raises the second base. Sometimes the traverse base vibrates in the left-right and front-rear directions during rotation of the disc by contacting the side surface of the second base.
In order to stop the vibration sound and also perform the vertical vibration required for the first base during performance, the first base and the second base with the turntable attached separately as in the conventional disk drive. There is no need to provide a component that applies an urging force to the second base in order to suppress the swing of the second base during rotation performance of the arranged intermediate base and the disk. That is, according to the present invention, the number of parts can be reduced, the structure can be further simplified, and the durability against the action of shock or vibration can be improved.

[Brief description of the drawings]

FIG. 1 is an overall perspective view showing an assembled state of a disk device according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view of the same.

FIG. 3 is an explanatory view showing a part of FIG. 2 in an enlarged manner;

FIG. 4 is an explanatory view showing a part of FIG. 2 in an enlarged manner;

FIG. 5 is an explanatory plan view showing an assembled state of the traverse base and the device base.

FIG. 6 is a schematic side view of the traverse base when it is raised.

FIG. 7 is a schematic side view of the traverse base when it is lowered.

FIG. 8 is a partial cross-sectional side view showing a support structure of the traverse base with respect to the device base.

FIG. 9 is a partial cross-sectional side view showing the tilting operation of the traverse base with respect to the device base.

FIG. 10 is a series of plan explanatory views showing the operation of the drive mechanism of the disk device.

FIG. 11 is a series of explanatory plan views showing the operation of the driving mechanism.

FIG. 12 is an explanatory plan view showing the tray storage state;

FIG. 13 is an explanatory plan view showing a state where the tray is pulled out;

FIG. 14 is an explanatory plan view of a cam gear of the drive mechanism.

FIG. 15 is an explanatory side view of a cam gear.

FIG. 16 is an explanatory partial sectional view showing a tooth trace shape in a longitudinal section of the cam gear.

[Description of Signs] 1 Disk device 2 Circuit board 3 First motor (spindle motor) 3s Output shaft of first motor (spindle motor) 4 Second motor 4s Output shaft of second motor 4G Motor gear 5 Turntable 6 Optical pickup 6f Leg of optical pickup 9 Optical disk 10 Device base 10a Claw shape portion 10H Inner opening (of device base) 11 Traverse base support shaft 12 Recess 12s Pivot shaft 20 Traverse base 20H Traverse base opening 20P Front end of traverse base Projecting portion 21 Notch portion of traverse base 22, 23 Pickup guide groove portion 24 Guide rail 27 Arc groove 29 Floating bush 30 Cam gear 30g Outer peripheral tooth portion (of cam gear) 31 Central boss portion (of cam gear) 32 Hook portion (of cam gear) 3 2p Engagement convex portion (of cam gear) 33 Cam groove (of cam gear) 33a Horizontal groove portion (of cam gear) 33b Diagonal groove portion (of cam gear) 33c Horizontal groove portion (of cam gear) 34 Missing tooth portion (of cam gear) 37 Stop Screw 38 Floating collar 39 Floating spring 40 Feed rack 41 Passive rack 49 Screw member 51 Rack drive gear train 52 First traverse gear 52A First traverse input gear 52B First traverse output gear 53 Second traverse gear 53A Second traverse input gear 53B Second traverse output gear 55 Tray 55g Tray rack teeth 56 Tray drive gear 56A Input gear (of tray drive gear) 56B Output gear (of tray drive gear) 61 Loading drive gear train 62 First loading gear 62A First row Loading input gear 62A First loading output gear 63 Second loading gear 63A Second loading input gear 63B Second loading output gear 64 Third loading gear 71 Trigger lever 96 Clamper 99 Side shoe Lh Center of the front end of the traverse base support shaft. Lg (cam gear) longitudinal axis Ls (side shoe) compression direction Lt (cam gear) shear direction Cg (third loading gear) rotation trajectory Cg 'arcuate curve along rotation trajectory

Claims (1)

[Claims] 1. A turntable for rotatably supporting an optical disc, an optical pickup for writing an information signal on an optical disc rotated by the turntable and / or reading an information signal recorded on the optical disc, and an optical disc for the optical pickup. A pickup drive mechanism for reciprocatingly moving the optical disk between an inner peripheral side and an outer peripheral side of the optical disk; a first position above the turntable and a second external part outside the apparatus;
A disc loading mechanism for reciprocatingly transferring the disc to and from a position, a first motor for rotating and driving the turntable, and a second reversible rotatable mechanism for applying a driving force to the optical pickup driving mechanism and the disc loading mechanism. A motor, a first base forming a base of the apparatus main body, a second base supported to be movable or rotatable in the vertical direction with respect to the first base, and one end of the second base to the first base. A first cushioning member having elasticity to be supported by a base;
A cam gear, which is located near the other end of the base and has a cam groove on the outer periphery for elevating the other end of the second base, and a second elastic member for supporting the cam gear so as to float on the first base;
An optical disc device comprising: a buffer member; and a third buffer member having elasticity that abuts on a side surface of the second base when the second base is raised and stops horizontal vibration with respect to the first base. The second base is supported in an opening formed in the first base so as to be floatable with respect to the first base within an elastic range of the first, second, and third cushioning members. A motor, the optical pickup and the second motor are provided on the second base, and the third cushioning member has one fixed to the first base and the other has a vertical deflection with respect to the first base. The disc loading mechanism is disposed on the first and / or the second base and includes a loading drive gear train comprising a plurality of gears, and a final output of the loading drive gear train. The cam gear is rotated when the gear meshes with the outer peripheral teeth of the cam gear, and the other end of the second base is moved up and down about the one end of the second base with respect to the first base. The final output gear of the loading drive gear train always engages with the outer peripheral teeth of the cam gear even when the base is moved up and down, and when the second base is raised, the projection on the other end side of the second base has the above-mentioned shape. By engaging the cam groove of the cam gear, the second base and the cam gear are integrally formed, and the second buffer member is used to perform vibration isolation in the vertical direction with respect to the first base, and the side surface of the second base. The third buffer member abuts the third buffer member to stop horizontal deflection of the second base with respect to the first base, and to prevent the first base of the second base from swinging. And the third buffer member is released from the side surface of the second base when the second base is lowered, and is evacuated from the transfer operation of the disk loading mechanism. Characteristic optical disk device.