JP3387663B2 - Disk unit - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention uses a disc drive mechanism such as a disc drive mechanism which is selected from a plurality of discs stored in a magazine and is held by a moving unit. , A disk device in which a selected disk is driven.

[0002]

2. Description of the Related Art FIG. 6 is a side view showing a conventional disk device 1 having a magazine type disk selecting function. A magazine M is loaded in the housing 2 of the disk device 1. A plurality of discs D are stored in the magazine M. The disc D is a compact disc, and is housed in the magazine M in a number of about 6 to 12.
A moving unit A is provided in the housing 2. The support pins 3 and 3 provided on the moving unit A are guided by the vertical holes 2a and 2a formed in the vertical direction (Y1-Y2 direction) on the side surface of the housing 2 to be movable in the vertical direction. There is. The moving unit A has a function of holding the disc D in the magazine M, and is equipped with a rotation drive mechanism for rotationally driving the held disc and an optical head for reading a signal recorded on the disc D.

Further, one of the disks in the magazine M is conveyed to the moving unit A in the X1-X2 direction and taken into the moving unit A, and the disk D from the moving unit A is empty in the magazine M. A transfer mechanism is provided for returning to the space. A drive member 4 is provided outside the side plate of the housing 2. The drive member 4 is formed of a plate material. Oblong hole 4a formed in the drive member 4,
4a is guided by guide pins 5 and 5 fixed to the side plate of the housing 2, and the drive member 4 is supported so as to be capable of reciprocating in the X1-X2 direction. The drive member 4 is provided with inclined guide holes 4b, 4b that are formed so as to be inclined with respect to the X direction and the Y direction. The support pins 3 and 3 provided in the moving unit A pass through the vertical holes 2a and 2a and are inserted into the inclined guide holes 4b and 4b.

The drive member 4 is driven by a motor or the like to generate X1.
Driven in the -X2 direction. When the driving member 4 is driven in the X1 direction, the moving unit A is moved up in the Y1 direction by the tilted guide holes 4b and 4b, and when the driving member 4 is driven in the X2 direction, it is driven by the tilted guide holes 4b and 4b. The unit A is lowered in the Y2 direction. The moving distance of the driving member 4 is detected by a linear sensor or the like, and the elevation height of the moving unit A is controlled by controlling the moving distance.
As a result, the height position of the moving unit A is determined, and the moving unit A stops at a position where any one of the disks D in the magazine M is selected. At this position, the disc D is taken in and held in the moving unit A, and the signal recorded on the disc D is reproduced.

[0005]

In the structure shown in FIG. 6,
Since the tilt guide holes 4b, 4b formed in the drive member 4 are linearly formed in the tilt direction, the tilt guide holes 4
There is an advantage that the moving operation of the moving unit A in the Y1-Y2 direction is continuous and smooth as compared with the case where b and 4b are formed in a stepped shape. However, in the case shown in FIG. 6, the driving load when driving the drive member 4 is large due to the relationship with the inclination angles of the inclined guide holes 4b, 4b, and the vertical hole 2a and the inclined guide hole 4b are supported at the intersecting position. There is a drawback that the amount of backlash increases due to the clearance of the support pin 3 that is provided.

FIG. 4B is an enlarged view showing a state in which the support pin 3 is inserted into the vertical hole 2a and the inclined guide hole 4b. In FIG. 4B, for convenience of explanation, the vertical hole 2a
And the inclined guide hole 4b have the same width W, the vertical hole 2a, the inclined guide hole 4b and the support pin 3
It is assumed that the clearance with (radius R) is both d. Also, the inclined guide hole 4b is horizontal (X direction)
The angle formed by is shown by θ. Now, when the drive member 4 moves in the X1 direction, a force acts on the center O of the support pin 3 from the left side (a) of the inclined guide hole 4b. The support pin 3 is provided on the right side (b) of the fixed vertical hole 2a.
When touching, slide while applying force to this right side (b). Therefore, the sliding frictional force at the time of raising the moving unit A in the Y1 direction becomes large, and the drive member 4 is moved to the X1-X2 direction.
The load when driving in the direction becomes large. Also, FIG.
In (B), the center of the support pin 3 can move between the O position and the O1 position, and the backlash amount H1
Is very large.

From the above, in order to reduce the load when the moving unit A is raised by the inclined guide hole 4b and further reduce the backlash amount H1, the inclined guide hole 4 is required.
The inclination angle θ of b and 4b must be reduced. However, if the inclination angle θ of the inclined guide holes 4b, 4b is reduced, the movement stroke in the X1-X2 direction of the drive member 4 required for moving the moving unit A up and down in the Y1-Y2 direction by a certain distance becomes long. However, in the recent disk device, for example, the disk D is partially pulled out in the X2 direction from the magazine M and is rotationally driven and reproduced in the moving unit A, so that the width dimension B of the housing 2 is minimized. Is being considered. In such a disk device, if the movement stroke of the drive member 4 in the X1-X2 direction is lengthened, the drive member 4 will protrude from the width dimension B. If the number of disks stored in the magazine M is small, the vertical movement distance of the moving unit A in the Y1-Y2 direction may be short and the inclined guide holes 4b and 4b may be short, but about 12 disks in the magazine M. In the case where a large number of discs D are stored, the moving unit A must be moved up and down by a very long distance, and the inclined guide holes 4b and 4b must be long.

Therefore, in a device in which the width B of the left and right sides is short and the number of disks D stored in the magazine M is large,
Restriction on the movement stroke of the drive member 4 and the movement unit A
The tilt guide hole 4
It is necessary to lengthen b and 4b and increase the inclination angle θ, and as a result, it is possible to avoid an increase in the drive load of the drive member 4 and an increase in the backlash amount H1 of the moving unit A. Disappear. When the driving load of the driving member 4 is large, not only the power consumption increases but also the inclined guide hole 4
The wear on both sides of b and 4b, especially on the left side (a) for raising the moving unit A also becomes large. Further, if the backlash amount H1 is large, it becomes difficult to accurately position the moving unit A with respect to the disk D to be selected in the magazine M.

The present invention is to solve the above-mentioned problems of the prior art. Even if the moving stroke of the driving member is short, the tilt guide can move the moving unit up and down with a light load, and the back of the moving unit and the tilt guide can be improved. It is an object of the present invention to provide a disk device capable of reducing the amount of rush.

[0010]

DISCLOSURE OF THE INVENTION A disk device according to the present invention is a disk installation section in which a plurality of disks are installed, and a disk installation section that is movable along the disk installation section to select one of the disks. A moving unit capable of holding a disc and first and second driving members that are driven in opposite directions to each other, and the first driving member is provided with a first unit that is inclined with respect to the moving direction of the moving unit. Is provided, and the second drive member is provided with a second tilt guide that tilts in a direction opposite to the first tilt guide with respect to the moving direction of the moving unit. It is characterized in that it is supported by the first tilt guide and the second tilt guide, and the moving force of both drive members is given to the moving unit from both tilt guides.

A magazine containing a plurality of disks is installed in the disk installation section. Alternatively, the discs may be inserted one by one in the disc installation portion provided in the housing. The disc may be an exposed type disc that is not housed in a cartridge, such as a compact disc, or may be a disc that is used while being housed in the cartridge, such as a mini disc. The disc is an optical disc, a magneto-optical disc, a magnetic disc, or the like.

The moving unit has a function of holding the disk in the disk setting portion, and preferably, a reading unit such as a rotary drive mechanism for rotating the held disk and an optical head is read in the moving unit. The member is mounted. Further, the moving unit has only the function of holding the disc, and the disc driving unit having the rotation driving mechanism of the disc and the reading member may be provided separately from the moving unit. In this case, the disk in the disk installation section is selected and held by the moving unit, the moving unit moves to the position of the disk drive unit, and the disk is installed in the disk drive unit and rotationally driven.

The drive member is a drive lever formed of, for example, a plate material, and the tilt guide is formed of an elongated hole formed in the drive lever. In this case, pins protruding from the moving unit (part of the moving unit)
The first and second inclined guides are inserted and supported at the intersecting positions of the elongated holes. Further, the inclined guide may be formed in a rail-like shape so as to project from the driving member. Alternatively, the first tilt guide and the second tilt guide may support different parts of the moving unit.

Further, although the first and second driving members are both driven in opposite directions, the structure is such that the driving force is separately given to the first and second driving members from the power of a motor or the like. However, in a preferred example, a power reversal mechanism is provided between both drive members, a moving force is applied from the power source to the first drive member, and this moving force is reversed by the power reversal mechanism to generate a second force. The drive member will be moved in the opposite direction to the first drive member.

The power reversing mechanism is composed of a rack provided on each of the first and second drive members, and a free rolling pinion gear that meshes with both racks in common. Alternatively, the pinion gear may be driven by a motor, and the driving force may drive the first and second driving members in opposite directions. That is, in a preferred example of the present invention, the power transmitted from one power source drives the first and second drive members in opposite directions in synchronization with each other.

[0016]

In the above means, the first drive member and the second drive member are driven in opposite directions by the power of the motor or the like. The first drive member and the second drive member are provided with a first tilt guide and a second tilt guide that tilt in opposite directions, and the moving member is supported by the both tilt guides. When the first and second driving members are driven in opposite directions, the moving unit supported by both tilt guides moves along the disc mounting portion. The moving distance of the driving member is detected by a linear sensor or the like, and the driving member stops when the moving unit faces the disk to be selected. Then, the selected disk is held by the moving unit, and the disk is rotationally driven by, for example, a disk rotation driving mechanism provided in the moving unit, and reproduction of a signal recorded on the disk is performed.

The moving unit is supported in a state of being sandwiched by first and second tilt guides that are tilted in opposite directions. Therefore, when the moving unit moves up and down, the moving unit is held only by the inclined portion of the tilt guide, and the side (b) where the moving unit is vertically fixed as in the conventional example shown in FIG. 4 (B). Is not pressed against
The driving load when moving the moving unit is reduced.
Therefore, even if the tilt angle of the tilt guide is made larger in the vertical direction than that of the conventional one, the driving load of the driving member becomes light. By increasing the tilt angle θ of the tilt guide, it is possible to move the moving unit a long distance by a short stroke of the driving member.

Since the moving unit is constrained by the first and second tilt guides tilting in different directions, the backlash amount of the moving unit is as shown in FIG. 4 (B).
It is smaller than the conventional one shown in.

The first and second driving members may be driven in the opposite directions in synchronization with each other by applying power to the first and second driving members. If a power reversing mechanism is provided between the two driving members, the driving force can be applied to one driving member so that both driving members can be reliably synchronized and driven in opposite directions.

[0020]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an exploded perspective view showing an embodiment of the disk device of the present invention, FIG. 2 is a side view of the assembled disk device as seen from the direction II in FIG. 1, and FIG. 3 is an assembled disk device. It is the bottom view seen from the III direction of 1. The housing 11 of the disk device 10 is formed of sheet metal or the like. In the disk device 10 in a completed state as a product, the housing 11 is housed in a decorative case made of plastic or the like. A disk installation section C is provided in the housing 11. In this embodiment, a magazine M accommodating a plurality of disks D is removably installed in the disk installation section C. The disc D is a compact disc having a diameter of 12 cm, and about 12 such discs D are stored in the magazine M. An insertion opening 11a is opened in a side plate 11d on the inner side of the housing 11 in FIG. 1, and the magazine M is inserted into the insertion opening 11a from the Z direction and installed in the disk installation portion C. . The magazine M installed in the disk installation section C has an opening Ma on the left side (side facing the moving unit A) in the figure, and any selected disk D moves from this opening Ma. You can enter and exit in the direction of Unit A.

A pair of guide shafts 12, 12 are fixed between the bottom plate and the ceiling plate of the housing 11, and the moving unit A
Is guided by these guide shafts 12, 12 in the vertical direction (Y
It is possible to move up and down (selective movement) in the 1-Y2 direction. The moving unit A is a combination of a lower chassis 13 and an upper chassis 14. A turntable 15 that constitutes a disk rotation drive mechanism is rotatably supported by the lower chassis 13, and a spindle motor that rotationally drives the turntable 15 is provided on the back surface of the lower chassis 13. An optical head is mounted on the lower chassis 13 as a reading member for reading a signal recorded on the disc. A clamper 16 is rotatably supported on the upper chassis 14.

The lower chassis 13 has an upper chassis 14
A holding mechanism for moving up and down is provided. Further, the lower chassis 13 is equipped with a transfer mechanism that takes in the disc D in the magazine M and returns the disc D into the magazine M. When the moving unit A moves up and down to face the desired disk D in the magazine M, the disk Da selected by the transfer mechanism is taken in between the lower chassis 13 and the upper chassis 14. At this time, the upper chassis 14 is lowered by the holding mechanism, the central portion of the disk Da placed on the turntable 15 is clamped by the clamper 16, and the disk Da is held.

In this embodiment, with the selected disk Da held in the moving unit A, the disk Da is
Is not completely projected from the magazine M, and the disk Da is partially left in the magazine M.
Clamped on 5. When the turntable 15 is rotationally driven by the spindle motor, the disk Da
Is partially rotated in the magazine M, the signal recorded on the disk is read by the optical head, and the recorded music is reproduced. As described above, when the disc Da is taken into the moving unit A and held on the turntable 15, a part of the disc Da remains in the magazine M, so that the casing shown in FIG. The width dimension B of the body 11 can be minimized.

A pair of vertical holes 11c, 11c are formed in one side plate 11b of the housing 11. Vertical holes 11e and 11e are similarly formed in the other side plate 11d of the housing 11. A pair of support pins 21 and 21 are fixed to the side surface of the lower chassis 13 of the moving unit A. The support pins 21 and 21, which are a part of the moving unit A, are inserted into the vertical holes 11c and 11c and project to the outside of the side plate 11b. Similarly, a support pin is fixed to the other side surface of the lower chassis 13, and the support pin is provided in the vertical hole 11
It is inserted in e and 11e, and is projected outside of the side plate 11d. In this embodiment, the vertical holes 11c and 11c do not restrain the support pins 21 and 21, and
The opening width dimension W1 of the vertical hole 11c is sufficiently larger than the diameter dimension of the support pin 21.

A first drive member 22 is provided outside the side plate 11b of the housing 11. This first drive member 22
Is a drive lever made of sheet metal. The first drive member 22 has elongated holes 22a and 2 extending in the horizontal direction (X1-X2 direction).
2b is formed. The side plate 11b of the housing 11 has a shaft 1
7 and 18 are fixed. The slots 22a and 22b are slidably inserted into the shafts 17 and 18, and as a result, the first driving member 22 is slidably supported in the X1-X2 directions.

The first driving member 22 includes a moving unit A.
Vertical movement direction (Y1-Y2 direction) and horizontal direction (X
First tilt guide hole 2 tilted with respect to 1-X2 direction)
A pair of 2c and 22c is formed. Each inclined guide hole 2
2c and 22c are parallel to each other, and the inclination angle with respect to the horizontal direction is θ (see FIG. 4A). The lower ends of the first inclined guide holes 22c, 22c are horizontal portions 22d, 22d extending in the horizontal direction. A second drive member 23 is provided on the outer side of the first drive member 22 in a stacked manner. This second drive member 23 is also a drive lever made of sheet metal. The second drive member 23 is formed with elongated holes 23a and 23b extending in the X1-X2 direction.
3a and 23b are elongated holes 22a and 2 of the first drive member 22.
The shaft 17 and 18 are slidably inserted together with 2b. Therefore, the second drive member 23 also has the shafts 17, 18
It is slidably supported in the X1-X2 direction.

The second driving member 23 is provided with second inclined guide holes 23c, 23c. A pair of second inclined guide holes 23c, 23c are provided and are parallel to each other. Further, the second inclined guide holes 23c, 23c are arranged in the vertical movement direction (Y1-Y2 direction) of the moving unit A.
The first tilt guide holes 22c, 22c are tilted in the opposite direction. As shown in FIG. 4A, the inclination angle of the second inclined guide holes 23c, 23c with respect to the horizontal direction (X1-X2 direction) is θ. That is, the first tilt guide hole 22c and the second tilt guide hole 23c are provided in the moving unit A.
The tilt angles are opposite to each other and symmetrical with respect to the ascending / descending direction of. The support pins 21, 21 fixed to the lower chassis 13 of the moving unit A are
From the vertical holes 11c, 11c formed in the side plate 11b of the first side, and the first inclined guide holes 22c, 22c and the second
Is inserted into each of the inclined guide holes 23c and 23c. As shown in FIGS. 2 and 4 (A), each support pin 21 is supported at the intersecting position of the first inclined guide hole 22c and the second inclined guide hole 23c.

A rack 24 is provided on the upper end of the first drive member 22.
Is provided. The rack 24 is integrally cut and formed in the raised portion at the upper end of the first drive member 22. A rack 25 is provided on the upper end of the second drive member 23. The rack 25 may be formed separately from the second drive member 23, and the rack 25 is fixed to the second drive member 23 by screws or the like. The shaft 17 fixed to the side plate 11b of the housing 11 includes the elongated hole 22a of the first driving member 22 and the elongated hole 23a of the second driving member 23.
The pinion gear 26 is rotatably supported on the shaft 17 outside the second drive member 23, though the pinion gear 26 is rotatably supported. As shown in FIG. 2, the pinion gear 26 includes the racks 24 and 25.
Mesh with each of the. The pinion gear 26 and the racks 24 and 25 constitute a power reversing mechanism, and the power reversing mechanism causes the first driving member 22 and the second driving member 23 to synchronize with each other in opposite directions (X1 direction and X2 direction). Direction).

On the other side plate 11d of the casing 11, one opposite drive member 27 is provided slidably in the X1-X2 direction. The facing drive member 27 has an inclined guide hole 2
7c and 27c are formed, and the support pins provided on the lower chassis 13 of the moving unit A have vertical holes 11e and 11e.
And is supported by the inclined guide holes 27c, 27c. Inclined guide hole 27 provided in the opposing drive member 27
The c and 27c are formed so as to have the same orientation and the same inclination angle θ as the second inclined guide holes 23c and 23c.
In this embodiment, on the side plate 11b side of the housing 11, a moving force of the first drive member 22 and the second drive member 23 in opposite directions gives a vertical movement force to the moving unit A. On the side, an elevating force is applied to the moving unit A only by the moving force of one opposing drive member 27. However, two drive members similar to the first and second drive members 22 and 23 may be provided outside the side plate 11d.

FIG. 3 is a view of the housing 11 from the bottom plate 11f side. A drive rack 31 is fixed to the lower end of the first drive member 22, and the drive rack 31 is located below the bottom plate 11f of the housing 11. A motor 32 serving as a drive source is provided on the bottom plate 11f, a worm gear 34 is attached to its output shaft, and a reduction gear train 35 is meshed with the worm gear 34. The rotation output of the motor 32 is reduced by the worm gear 34 and the reduction gear train 35. The drive pinion gear 36 at the final stage of the reduction gear train 35
Engages with the drive rack 31, and the first drive member 22 is driven in the X1-X2 direction together with the drive rack 31.

A power reversing lever 37 having a central portion supported by a supporting shaft 38 is provided on the bottom plate 11f of the housing 11. A bent piece 22e is formed at the lower end of the first drive member 22 by bending, and the bent piece 22e extends below the bottom plate 11f. A connecting pin 39 is fixed to one end of the power reversing lever 37, and the connecting pin 39 is used for the bending piece 2.
It is inserted in an elongated hole 22f formed in 2e. Further, the opposite drive member 27 provided on the side plate 11d side of the housing 11
Similarly, a bending piece 27e is also formed at the lower end of the connecting pin 41 fixed to the other end of the power reversing lever 37.
It is inserted in an elongated hole 27f formed in 7e.

When, for example, the first drive member 22 is driven in the X1 direction by the power of the motor 32, the power inversion mechanism formed by the pinion gear 26 and the racks 24, 25 shown in FIG. 23 is driven in the opposite X2 direction, but on the bottom plate 11f side shown in FIG.
By the movement of the drive member 22 in the X1 direction, the power reversing lever 37 rotates clockwise, and the opposing drive member 27 is driven in the X2 direction. That is, the moving directions of the second drive member 23 and the counter drive member 27 are always the same. Also,
The power reversing lever 37 is always biased counterclockwise by a spring 42. Since the power reversing lever 37 is urged, both ends of the power reversing lever 37 and the first
Rattling due to backlash at the connecting portion between the drive member 22 and the counter drive member 27 is prevented. Further, the spring 42 urges the first drive member 22 in the X2 direction, which causes the pinion gear 26 to rotate.
The rattling of backlash at the meshing portion between the racks 24 and 25 is also prevented.

A detection lever 45 is provided on the bottom plate 11f of the housing 11.
Is provided. This detection lever 45 has a long hole 45
a and 45a are formed. These long holes 45a, 45a
Is inserted into the cut-and-raised pieces 11g, 11g from the bottom plate 11f, and the detection lever 45 is slidably supported in the X1-X2 direction. A pin 43 is fixed to the power reversing lever 37, the pin 43 is inserted into the elongated hole 45b of the detection lever 45, and the detection lever 45 is driven in the X1-X2 direction as the power reversing lever 37 rotates. It is like this.
A linear sensor 46 such as a slide type variable resistor is provided on the bottom plate 11f, and a sliding body 46a of the linear sensor 46 is driven by the detection lever 45. The rotation angle of the power reversing lever 37 can be detected by detecting, for example, a change in the resistance value of the linear sensor 46, and thus the first drive member 22 and the second drive member 22 can be detected.
The moving position of the driving member 23 and the facing driving member 27 can be detected.

Next, the operation of the disk device 10 will be described. In this disc device 10, any one of the plurality of discs D in the magazine M installed in the disc installation section C is selected. In this selection operation, the moving unit A moves up and down in the Y1-Y2 direction. It is done by doing. The motor 3 shown in FIG.
2, the power is reduced by the reduction gear train 35 and transmitted to the drive rack 31, and the first drive member 22 is driven together with the drive rack 31 in the X1 direction or the X2 direction. At this time, the moving force of the first driving member 22 is reversed by the power reversing mechanism composed of the pinion gear 26 and the racks 24 and 25, and the second driving member 23 is acted on by the second driving member. 23 is driven in synchronization with the first driving member 22 in the opposite direction. The moving force of the first drive member 22 is transmitted to the counter drive member 27 via the power reversing lever 37, and the counter drive member 27 is driven in the same direction as the second drive member 23.

The support pins 21 and 21 extending from the lower chassis 13 of the moving unit A have first tilt guide holes 22.
c, 22c and the second inclined guide holes 23c, 23c, and are supported at the intersecting positions of the inclined guide holes 22c, 23c. The first drive member 22 moves in the X2 direction,
When the second driving member 23 moves in the X1 direction, the support pin 21 moves to the inclined side (C) of the first inclined guide hole 22c and the second side.
It is pushed up so as to be sandwiched by the inclined sides (2) of the inclined guide 23c. In the opposite drive member 27, X
The support pins of the moving unit A are pushed up by the inclined guide holes 27c, 27c that move in one direction. Therefore, the moving unit A moves up in the Y1 direction.

On the contrary, when the first drive member 22 moves in the X1 direction and the second drive member 23 moves in the X2 direction, the support pin 21 has the first inclined guide hole 22c and the second inclined guide hole 23c. Is guided to and descends in the Y2 direction. At this time, the facing drive member 27 moves in the X2 direction, and the moving unit A is similarly guided in the descending direction by the inclined guide hole 27c. The ascending position and the descending position of the moving unit A are monitored by monitoring the output of the linear sensor 46, and the rotation position of the power reversing lever 37 and the first and second drive members 22,
This can be controlled by detecting the moving positions of 23 and the opposite drive member 27. The output of the linear sensor 46 causes the moving unit A to move to a predetermined height position, and the motor 32 stops when it faces the selected disk Da in the magazine M. Then, as shown in FIG. 1, the disc Da selected from the magazine M is taken in between the lower chassis 13 and the upper chassis 14 of the moving unit A, the upper chassis 14 is lowered by the holding mechanism, and the clamper 16 and the turn are turned. The center of the disk Da is clamped by the table 15 and the disk is driven.

FIG. 4A is an enlarged view showing a state in which the support pin 21 is guided by the first inclined guide hole 22c and the second inclined guide hole 23c and lifted in the Y1 direction. FIG. 4 is a diagram for comparing FIG. 4 (A) and FIG. 4 (B).
In (A), both the width dimensions of the first inclined guide hole 22c and the second inclined guide hole 23c are W, and the width dimension W of the inclined guide hole 4b of FIG. 4B is illustrated. Therefore, in FIG. 4A, the first inclined guide hole 22c and the second inclined guide hole 22c
The clearance between the inclined guide hole 23c and the support pin 21 is d. The inclination angle θ of the inclination guide holes 22c and 23c with respect to the horizontal direction (X1-X2 direction) is the same as the inclination angle θ of the inclination guide hole 4b in FIG. 4B. In addition, in FIGS. 4A and 4B,
The support pin 21 and the support pin 3 have the same diameter (2R).

As shown in FIG. 4 (A), in the embodiment of the present invention, the inclined side (c) of the first inclined guide hole 22c and the inclined side (two) of the second inclined guide hole 23c are used. A support pin 21 which is a part of the moving unit A is supported. When the moving unit A is lifted in the Y1 direction, the first tilt guide hole 22c moves in the X2 direction and the second tilt guide hole 23c moves in the X1 direction. Both inclined guide holes 22c and 23c move in the X1 direction and the X2 direction at the same speed and the same moving force in synchronization. In FIG. 4 (A), both inclined guide holes 22c and 23
When the moving force of c (the moving force of the first and second drive members 22 and 23) is F in the opposite directions, the inclined side (c) of the first inclined guide hole 22c is directed toward the center O of the support pin 21. Component and the inclined side of the second inclined guide hole 23c (2)
Is applied to the center O of the support pin 21 by F · sin
At θ, the direction of the force is the moving direction of the moving unit A (Y
The direction is symmetrical with respect to the (1-Y2 direction).

The support pin 21 of the moving unit A has a symmetrical force component F (F · sin θ) directed in the X1 direction and the X2 direction.
Therefore, the support pin 21 is not pushed by a biased force in the X1 direction or the X2 direction. This is different from the point that the support pin 3 is pressed and slides on the right side (b) of the vertical hole 2a formed in the fixed portion in FIG. 4 (B).

In FIG. 4A, since the support pin 21 is lifted by the component force F.sin.theta. Having the same value in the mutually symmetric directions, the sliding load acting on the moving unit A is extremely larger than that in FIG. 4B. Get smaller. Therefore, the moving unit A is not pressed in the X1 direction or the X2 direction with respect to the guide shafts 12 and 12 shown in FIG.
The sliding load on Nos. 2 and 12 will be reduced. Further, as shown in FIG. 4A, the force is always applied from the inclined sides (C) and (II) with respect to the moving direction (Y1-Y2 direction) of the support pin 21. By the sliding of the inclined side and the support pin 21, the sliding load itself between the support pin 21 and the first inclined guide hole 22c and the second inclined guide hole 23c is reduced. From the above, the first drive member 2
The load acting on the second driving member 23 and the second driving member 23 is much smaller than that in FIG. 4 (B).
Even if the inclination angle θ of c and 23c is large, the driving load of the driving members 22 and 23 does not become so large.

Next, in FIG. 4 (A), when the clearance between the inclined guide holes 22c and 23c and the support pin 21 is d, the distance that the center of the support pin 21 can move is in the range from O to O2. is there. This distance H2 is the backlash amount of the support pin 21. When comparing FIGS. 4A and 4B, the backlash amount H2 in FIG.
Is much smaller than the backlash amount H1 in FIG. 4 (B). As can be seen from FIG. 4A, since the support pin 21 is always sandwiched between the two inclined sides (C) and (II) and moves in the Y1-Y2 direction,
The vertical holes 11c, 11c formed in the housing 11 do not restrain the support pin 21. Therefore, the width dimension W1 of the vertical holes 11c, 11c need only be larger than the diameter dimension of the support pin 21, and the vertical hole 11c, 11c width dimension W1 does not require high dimensional accuracy. As described above, the backlash of the support pin 21 is caused by the width W of both the inclined guide holes 22c and 23c.
It is determined only by the accuracy of. Both of these inclined guide holes 2
The backlash amount H2 can be reduced by making the width W of 2c and 23c highly accurate.

As described above, in the embodiment of the present invention shown in FIG. 4A, when the moving unit A is moved, the load acting on the driving members 22 and 23 is small, and the support pin 21 is used.
The backlash amount H2 is small, so the inclined guide hole 2
It is possible to make the inclination angles θ of 2c and 23c larger than the conventional ones. By increasing the inclination angle θ, the movement stroke of each drive member 22 and 23 in the X1-X2 direction can be shortened, and the movement unit A can be moved to Y1.
It can be moved a long distance in the -Y2 direction. Therefore, as in the embodiment shown in FIG. 1 and FIG. 2, in a device in which the width dimension B of the housing 11 is short, the number of disks installed in the disk installation portion C is large, and the moving distance of the moving unit A is long, Will be effective. A horizontal portion 22d is formed at the lower end of the first inclined guide hole 22c, and a horizontal portion 23d is formed at the lower end of the second inclined guide hole 23c. Therefore, when the first driving member 22 moves in the X1 direction, the second driving member 23 moves in the X2 direction, and the support pin 21 reaches the lowermost ends of the inclined guide holes 22c and 23c, the support pin 21 moves. It is held by the horizontal portions 22d and 23d and is in a locked state. The position of the moving unit A in this locked state is the initializing position, and at this time, the ejecting operation of the magazine M from the insertion port 11a is performed.

Next, FIG. 5 shows a second embodiment of the present invention. In FIG. 5, only the part related to the operation is shown and the other parts are omitted. In the second embodiment, the support pins 51, 51 are provided at positions apart from each other on the side of the moving unit A, and are inserted into the first tilt guide hole 22c and the second tilt guide hole 23c, respectively. There is. When the first tilt guide hole 22c moves together with the first drive member 22 in the X2 direction and the second tilt guide hole 23c moves together with the second drive member 23 in the X1 direction, the respective support pins 51, 51 The rising force in the Y1 direction acts and the moving unit A rises. Conversely, when the first tilt guide hole 22c moves in the X1 direction and the second tilt guide hole 23c moves in the X2 direction, the support pins 51, 51 and the moving unit A descend.

The principle of the lifting force applied to the moving unit A in this embodiment is substantially the same as that in FIG. 4 (A). When the moving unit A rises, the support pins 51, 5 are moved by the inclined sides (c) and (c) that are inclined in opposite directions.
The pushing force acts on 1, so that the mobile unit A receives X
A biased force in one direction or the X2 direction does not act. Therefore, the sliding load of the moving unit A is reduced. Further, since the driving force is applied to the support pin 51 by the inclined sides (C) and (2), the driving load on the driving members 22 and 23 is also reduced. Further, the backlash of the support pin 51 is also reduced as in FIG. Although the inclined guides are the inclined guide holes 22c and 23c in each of the above embodiments, the inclined guides are
It may be a rail-shaped member formed in a convex shape or a concave shape from the driving members 22 and 23. In the embodiment shown in FIG.
Since both tilt guides can be provided at positions that do not overlap each other, the above rail-shaped tilt guide can be used.

In FIGS. 1 and 2, the pinion gear 26
The rack and racks 24 and 25 constitute a power reversing mechanism. As the power reversing mechanism, a power reversing lever or a reversing link mechanism of the same kind as that shown by reference numeral 37 in FIG. 3 is used. Drive member 22 and second drive member 2
3 may be driven in the opposite directions. The moving unit A may have only the function of pulling out and holding the disc from the disc setting portion C without providing the disc rotation drive mechanism or the optical head by the turntable 15 in the moving unit A. In this case, for example, a disk drive unit having a turntable and an optical head is provided at the bottom of the housing 11, the moving unit A holding the disk is lowered to the bottom, and the disk in the moving unit A is moved to that position. It may be driven by a disk drive unit. Further, the discs D may be stored in a cartridge like a mini disc, and the discs stored in the cartridge without using the magazine M may be inserted one by one into the disc setting portion C. May be

[0046]

As described above, according to the present invention, the moving unit is moved by the tilt guide. Even if the tilt angle of the tilt guide is increased, the moving unit is moved with a low load and a minimum backlash. Can be made. Also, because the tilt angle of the tilt guide can be increased,
Even if the stroke of the driving member is small, the moving distance of the moving unit can be increased. Therefore, it is effective for a disk device which is small in size and has a large number of disks to be selected.

Further, by providing a power reversing mechanism between the first and second driving members, by applying power to one driving member, both driving members can be reliably synchronized and driven in opposite directions. .

[Brief description of drawings]

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

FIG. 2 shows a state in which the disc device is assembled, as shown in II of FIG.
Side view from the direction,

FIG. 3 is a view showing a state in which the disc device is assembled in FIG.
Bottom view seen from the I direction,

FIG. 4A is an enlarged explanatory view showing the relationship between the tilt guide and the support pin in the embodiment of the present invention, and FIG. 4B is an enlarged explanatory view showing the relationship between the tilt guide and the support pin in the conventional example;

FIG. 5 is a side view showing a main part of a disk device according to a second embodiment of the present invention,

FIG. 6 is a side view showing a conventional disk device,

[Explanation of symbols]

10 disk device 11 housing 12 Guide shaft 13 Lower chassis 14 Upper chassis 15 turntable 16 clamper 17,18 axis 21 Support pin (part of mobile unit) 22 First drive member 22c First inclined guide hole 23 Second drive member 23c Second inclined guide hole 24, 25, 26 Power reversal mechanism 27 Opposing drive member 27c Inclined guide hole A mobile unit C disk installation section D disk M magazine

Claims (3)

(57) [Claims] 1. A disk installation unit on which a plurality of disks are installed, a moving unit movable along the disk installation unit for selecting one of the disks and capable of holding the selected disk, and A first driving member and a second driving member that are driven in opposite directions are provided, and the first driving member has a first inclination that is inclined with respect to a moving direction of the moving unit.
Is provided, and the second drive member is provided with a second tilt guide that tilts in a direction opposite to the first tilt guide with respect to the moving direction of the moving unit. A disk device, wherein the moving force of both drive members is applied to the moving unit from both tilt guides, supported by the first tilt guide and the second tilt guide. 2. The disk device according to claim 1, wherein the moving unit is supported at an intersecting position of the first tilt guide and the second tilt guide. 3. A power reversal mechanism is provided between both drive members, a moving force is applied to the first drive member from a power source, and this moving force is reversed by the power reversal mechanism to form a second drive member. 3. The disk device according to claim 1, wherein the disk device is moved in a direction opposite to that of the first drive member.