JP3474996B2 - Disk unit - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disc device such as a CD-ROM reading device for a personal computer, a magneto-optical disc recording / reproducing device, or a music CD reproducing device, and more particularly to a disc device. The present invention relates to a loading / unloading mechanism (hereinafter, simply referred to as “loading mechanism”) that causes a tray to reciprocate between a standby position in a storage unit and a recording / reproducing position on a turntable.

[0002]

2. Description of the Related Art Conventionally, a plurality of trays, each carrying a disc, are stored in a standby position, and one of the trays is selectively moved to a recording / reproducing position on a turntable to turn the disc. Various disk devices having a loading mechanism for holding them on a table have been proposed.

[0003]

However, the conventional loading mechanism has a problem that the disk device becomes large because of the large number of constituent parts and the complicated structure.

Therefore, the present invention has been made to solve the above problems, and an object of the present invention is to provide a disk device which can be downsized by reducing the number of constituent parts and simplifying the structure.

[0005]

According to a first aspect of the present invention, there is provided at least one of a storage unit for storing a tray on which a disc is placed at a standby position, and reading information from the disc or writing information to the disc. And a loading mechanism for performing a loading operation for moving the tray from the storage section to the recording / playback section and an unloading operation for moving the tray from the recording / playback section to the storage section. In the disk device, the loading mechanism has a male screw portion on the outer circumference and extends in parallel to the tray moving direction, a drive mechanism for rotating the worm about its axis, and a male screw portion of the worm. An internal thread portion that meshes with and a hook that engages with the tray when the tray is moved, The worm has a moving member that moves in the longitudinal direction of the worm by the rotation of the worm, and a guide member having a guide hole having a linear portion parallel to the moving direction of the tray. A first moving member provided with an engagement groove and moving in a longitudinal direction of the worm by rotation of the worm; a first pin engaging with a guide hole of the guide member; a guide hole of the guide member; A second pin that engages with an engagement groove of the first moving member; the hook; and a protrusion,
And a second moving member that moves together with the moving member.

[0006]

[0007]

[0008]

[0009]

According to a second aspect of the present invention, the guide hole of the guide member has a first inclined portion extending in a direction inclined from the end of the linear portion on the side of the storage portion to the linear portion. In the unloading operation, the second moving member is moved toward the storage portion, and the first pin is guided from the straight portion to the first inclined portion. The hook moves the second moving member in the direction of moving away from the tray, while the hook moves the second moving member in the direction of moving away from the storage portion during the loading operation. By guiding the pin from the first inclined portion to the straight portion, the second moving member is rotated in a direction in which the hook engages with the tray.

According to a third aspect of the present invention, in the disk device, the guide hole of the guide member extends from the end of the linear portion opposite to the accommodating portion in a direction inclined with respect to the linear portion. Has a section, and during the loading operation,
By moving the second moving member in a direction away from the storage portion and guiding the second pin from the linear portion to the second inclined portion while moving the second pin in the engagement groove,
The second moving member is rotated in the direction in which the hook moves away from the tray, while the second moving member is moved toward the storage portion during the unloading operation to move the second moving member toward the storage unit. The second pin in the direction in which the hook engages with the tray by guiding the pin from the second inclined portion to the straight portion while moving the pin in the engaging groove.
It is characterized by rotating the moving member.

According to a fourth aspect of the present invention, in the disk device according to the fourth aspect, the guide hole of the guide member extends from the end of the linear portion opposite to the accommodating portion in a direction inclined with respect to the linear portion. The second moving member has a protrusion, the loading mechanism holds the disc on the turntable, and the spring member pushes the clamp means toward the turntable. A clamp control member for holding the clamp means in the direction of separating from the turntable against the biasing force of the spring member or releasing the hold of the clamp means based on the engagement with the protrusion. During the loading operation, the second moving member is moved in a direction away from the storage portion, and the second pin is moved from the straight portion while moving in the engagement groove. By directing the serial second inclined portion, the second in the direction in which the hook is moved away from the tray
Of the second moving member is released, and the holding of the clamp means is released by engagement with the protrusion of the second moving member. On the other hand, during the unloading operation, the second moving member is moved to the above-mentioned position. In the direction in which the hook engages with the tray, the hook is engaged with the tray by moving the second pin in the engagement groove and guiding the second pin from the second inclined portion to the straight portion while moving the second pin in the engagement groove. The second moving member is rotated, and the clamping means is held in a direction away from the turntable by engagement with a protrusion of the second moving member.

[0013]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of a disk device according to the present invention will be described below with reference to the drawings.

FIG. 1 is a perspective view schematically showing the external appearance (only the main structure) of an example of a disk device according to the present invention. This disk device is a CD-ROM reader for a personal computer. This disc device includes a chassis 1, a storage unit 3 into which a magazine 2 equipped with a plurality of trays for loading discs is inserted, a reproducing unit 4 for reading information recorded on the disc, and a supporting unit for supporting the reproducing unit 4. And a lifting mechanism 6 for lifting and lowering the supporting plate 5 in the height direction (A direction) of the chassis 1. Further, this disc device is provided on the support plate 5, and the tray on which the disc is placed is directed from the magazine 2 to the reproducing unit 4 (B ₁
It has a loading mechanism 7 for performing a loading operation of pulling out the disk on the turntable by pulling it out (in the direction) and an unloading operation of releasing the holding of the disk and pushing the tray toward the magazine 2 (in the B ₂ direction).
The present invention can be applied not only to the CD-ROM reading device but also to other disk devices such as a magneto-optical disk recording / reproducing device and a music CD reproducing device. Further, the present invention can be applied not only to a disc device that inserts the magazine 2 into the storage unit 3, but also to a disc device that has a configuration in which the tray can be directly inserted into the storage unit 3. Furthermore, the present invention can be applied not only to a multi-disk device having a plurality of trays but also to a disk device having only one tray.

The disk device shown in FIG. 1 will be described in more detail below in the order of the storage section 3, the reproducing section 4, the elevating mechanism 6, and the loading mechanism 7 which is a characteristic part of the present invention. [Storage Section 3] FIGS. 2 and 3 are enlarged plan views showing the lock / eject mechanism 8 for holding the magazine 2 inserted in the storage section 3 or ejecting the magazine 2 from the storage section 3. Of these, FIG. 2 shows a state in which the magazine 2 is only partially inserted into the storage section 3, and FIG.
Shows a state in which is completely inserted and locked in the storage section 3. Further, FIG. 4A is a cross-sectional view schematically showing a case where FIG. 2 is cut along the line II-II, and FIG.
FIG. 3 is a cross-sectional view schematically showing a case of cutting along a line III-III. 5 is a plan view of the magazine 2 when the tray 9 is not pulled out, FIG. 6 is a front view of the magazine 2 viewed in the direction C in FIG. 5, and FIG. FIG. 3 is a plan view of the magazine 2 when it is opened.

As shown in FIG. 6, five trays 9 on which the disks 10 are placed are stacked inside the magazine 2. The disc 10 is placed on the tray 9 with the side on which information is recorded facing up. As shown in FIG. 7, each tray 9 is pulled out in the B ₁ direction from the opening 2 a of the magazine 2 along the support rails 2 b provided inside both side walls of the magazine 2 toward the reproducing unit 4. be able to. A guide groove 2d is formed on the upper surface 2c of the magazine 2. The guide groove 2d is a linear portion 2e extending in the insertion direction B ₁ of the magazine 2 (or the ejection direction B ₂ ).
And a branch portion 2f projecting obliquely laterally from the vicinity of the center of the straight portion 2e.

As shown in FIGS. 2 to 4, the lock / eject mechanism 8 includes an upper plate 11 fixed to the chassis 1 and an L-shaped guide hole 11a formed in the upper plate 11. , A linear guide hole 11 formed in the upper plate 11
b and the guide pins 12 and 1 fixed to the lower surface of the upper plate 11 and engaged with the linear portion 2e of the guide groove 2d of the magazine 2.
3 and 3. Further, the lock / eject mechanism 8 has a lock plate 14 movably provided on the upper plate 11. The lock plate 14 is provided with an engagement pin 14a that engages with the guide hole 11a and the guide groove 2d of the magazine 2, an engagement portion 14b that engages with the guide hole 11b, and an end portion 14c protruding upward. Has been. Further, the lock / eject mechanism 8 connects the end 14 c of the lock plate 14 to the upper plate 14
It has a coil spring 15 that attracts toward the protruding portion 11c protruding upward.

As shown in FIGS. 2 and 4 (a), the user moves the magazine 2 from the opening 3a of the storage unit 3 in the B ₁ direction.
When the magazine 2 is pushed in, the magazine 2 engages the linear portion 2e of the guide groove 2d with the guide pin 12 fixed to the upper plate 11 and the engagement pin 14a fixed to the lock plate 14, and Go along the inner surface in the B ₁ direction,
The front end portion 2g of the magazine 2 is connected to the engaging portion 14b of the lock plate 14.
Abut. When the magazine 2 is further pushed in the B ₁ direction, the lock plate 14 having the engaging portion 14b pushed by the front end portion 2g of the magazine 2 advances in the B ₁ direction from the position shown in FIG. 2, and the straight portion 2e of the guide groove 2d. Is also engaged with the guide pin 13 fixed to the upper plate 11. When the magazine 2 is further pushed in, the engagement pin 14a fixed to the lock plate 14 reaches the bent portion 11d of the guide hole 11a, and
Also, as shown in FIG. 4B, the lock plate 14 has a protrusion 2g by the tensile force of the coil spring 15 in the D direction.
Is rotated about the center in the clockwise direction (E ₁ direction) to move the engagement pin 14a of the lock plate 14 into the branch portion 2f of the guide groove 2d. In this state, the magazine 2 is locked in the storage section 3.

From the opening 3a of the storage unit 3 to the magazine 2
When discharging in _two directions, in the state shown in FIGS. 3 and 4 (b), the end portion 14d of the lock plate 14 slightly protruding outside the chassis 1 is pushed, and the coil spring 15 rotates clockwise (E ₁ Direction) to overcome the force of the lock plate 14 in the counterclockwise direction around the engaging portion 14b (E
₍₂ directions) to engage the locking pin 14a of the lock plate 14a
From the branch portion 2f of the guide groove 2d of the magazine 2 to the straight portion 2e
Move to. Then, the lock by the lock plate 14 is released, the lock plate 14 advances in the B ₂ direction by the tensile force of the coil spring 15 in the D direction, and the magazine 2 pushed by the engaging portion 14b of the lock plate 14 also moves in the B ₂ direction. Is discharged.

In this way, the magazine 2 can be locked in the storage portion 3 by simply pushing in the magazine 2, and by slightly pushing the end portion 14d projecting to the outside of the chassis 1,
Since the magazine 2 can be ejected from the storage section 3, the replacement of the magazine 2 becomes extremely easy by using the lock / eject mechanism 8. Further, the lock / eject mechanism 8 includes the lock plate 14, the coil spring 15, and the upper plate 1.
With very few members such as 1 guide holes 11a, 11b,
In addition, since it is configured with an extremely simple configuration, it is possible to reduce the size and weight of the device and reduce the cost. [Playback Unit 4] FIG. 8 is a plan view schematically showing the disc device of FIG. 1, and FIG. 9 is a bottom view schematically showing the disc device of FIG. 10 is an enlarged plan view showing a moving mechanism of the optical pickup shown in FIG. 8, and FIG. 11 shows a pulse generation unit for detecting a position of the optical pickup shown in FIG. 10 in the disc radial direction. It is a front view which shows a rotating member.

As shown in FIG. 8 or 10, the reproducing section 4 has a support plate 5 and an opening 5a formed in the support plate 5 (the opening 5a is formed by a member separate from the support plate 5). And the support plate 5
And the turntable 20 attached to the support plate 5 so as to straddle the opening 5a. Further, as shown in FIG. 8, the reproducing portion 4 includes a bearing member 21 and 22 fixed on the support plate 5 and a screw thread (male screw portion) on the outer periphery rotatably supported by the bearing members 21 and 22. ), A support member 24, 25 fixed on the support plate 5, and a guide shaft 26 supported by the support members 24, 25 in parallel with the worm 23.
An optical pickup 27 supported by the worm 23 and the guide shaft 26, and a drive mechanism 28 for rotating the worm 23. The optical pickup 27 has a through hole through which the worm 23 passes, and a screw groove provided on the inner surface of the through hole is meshed with the male screw portion of the worm 23.
Therefore, when the worm 23 is rotated, the optical pickup 27 moves in the disc radial direction (F direction).

Further, as shown in FIG. 9, the reproducing section 4
Is a plate-shaped movable member 29 that holds the disc 10 on the turntable 20, and a disc-shaped holding member 29a that is attached to the tip of the movable member 29 and that holds the center of the disc 10 together with the turntable 20. The leaf spring 30 is attached to the support plate 5 and pushes the movable member 29 toward the turntable 20. Although the movable member 29, the holding member 29a, and the leaf spring 30 have been described as the configuration of the reproducing unit 4, these are also the configuration of the disc holding mechanism 7b of the loading mechanism 7 described later. In other words, these structures function as the structure of the reproducing unit 4 during the reproduction of the disc, but function as the disc holding mechanism 7b of the loading mechanism 7 which holds the disc on the turntable 20 except during the reproduction of the disc.
The movable member 29 is attached to the support plate 5 by the support members 31 and 32, and presses the rotating arm 91 against the biasing force of the leaf spring 30, as will be described later in the section of the loading mechanism 7. Holding member 29 by pin 92
Is urged away from the turntable 20.

As shown in FIG. 10, the drive mechanism 28 of the optical pickup 27 includes a motor 33, a gear 34 fixed to a rotation shaft 33a of the motor 33,
The gear 35 meshes with the gear 34, and the gear 36 meshes with the gear 35 and is fixed to the worm 23. The rotation shaft 33a of the motor 33 has a structure shown in FIG.
, A rotary member 37 having a plurality of blades (10 blades in the figure) is attached, a light emitting element 38 is provided on one side of the blade of the rotary member 37, and a light emitting element is provided on the opposite side. A light receiving element 39 for receiving the light from 38 is provided. As described above, the rotating member 37 having the light emitting element 38 and the blade that blocks the light from the light emitting element 38.
And the light receiving element 39 constitute a pulse generator 40 that outputs a number of pulse signals according to the number of rotations of the rotary shaft 33a of the motor 33.

The motor 33 is driven to rotate the rotary shaft 33.
When the driving force of a is transmitted to the worm 23 via the gear train composed of the gears 34, 35 and 36 and the worm 23 is rotated about its axis, the optical pickup 27 having the female screw portion 27a meshing with the worm 23 is a disc. It moves in the radial direction (F direction). At this time, the position of the optical pickup 27 in the disc radial direction can be detected based on the number of pulses output from the pulse generator 40. [Lift mechanism 6] FIG. 12 shows the right slide plate 5 when the support plate 5 is at the lowest position (corresponding to FIG. 8 and FIG. 9).
6 is a side view showing the left slide plate 57 when the support plate 5 is at the lowest position (corresponding to FIG. 8 and FIG. 9). Also, FIGS.
7 shows when the support plate 5 is at the highest position, FIG. 14 is a plan view of the disk device, and FIG.
16 is a bottom view of the disk device, FIG. 16 is a side view showing the right slide plate 56, and FIG. 17 is a side view showing the left slide plate 57.

As shown in FIGS. 8 and 14, the elevating mechanism 6 includes a motor 50, a gear 51 fixed to a rotating shaft 50a of the motor 50, and a gear 51 that meshes with the gear 51 and rotates about a shaft 52a. A large-diameter gear 52, and a small-diameter gear 53 concentrically fixed to the gear 52,
It has a large-diameter gear 54 that meshes with this gear 53 and rotates about a shaft 54a, and a small-diameter gear 55 that is concentrically fixed to this gear 54. Moreover, the lifting mechanism 6 includes a right slide plate 56 which is movably supported in the direction (B ₂ or B ₁ direction) back and forth with respect to the chassis 1, the front-rear direction relative to the chassis 1 (B ₂ or B ₁ direction) A left slide plate 57 movably supported on the bottom plate, a bottom plate 58 fixed to the chassis 1,
It has a shaft 59a fixed to the bottom plate 58 and a rotating arm 59 rotatably supported by the shaft 59a.

As shown in FIG. 8, FIG. 9 or FIG. 12, the right slide plate 56 is in the front-back direction (B ₂ or B ₁ direction).
Slide holes 56a, 56b, 56c extending in the direction of, and a step-like cam hole 56d having a raised rear side (opposite to the storage portion 3)
A rack 56e that meshes with the gear 55, and the rotating arm 5
A drive end 56g having a cam hole 56f connected to 9, and
For example, a photo interrupter type detector or a detector (not shown) having a mechanical switch is used for the right slide plate 5
6 has a plurality of protrusions 56h for notifying the position of 6. As shown in FIG. 12, the pin 60 fixed to the chassis 1 is engaged with the linear slide hole 56a, and the pin 61 fixed to the chassis 1 is inserted into the linear slide hole 56b.
62 is engaged, and the pin 63 fixed to the chassis 1 is engaged with the linear slide hole 56c. On the other hand, a pin 64 fixed to the support plate 5 is engaged with the stepwise slide hole 56d through a vertically long slide hole 1a formed in the chassis 1.

Further, as shown in FIG. 13, the left slide plate 57 has slide holes 57a and 57b extending in the front-rear direction (B ₂ or B ₁ direction) and a stepped shape in which the front side (the storing portion 3 side) is raised. Cam holes 57c and 57d and a driven end 57f having a cam hole 57e connected to the rotating arm 59. A pin 65 fixed to the chassis 1 is engaged with the linear slide hole 57a, and a pin 66 fixed to the chassis 1 is engaged with the linear slide hole 57b. On the other hand, the stepped slide hole 57c is engaged with the pin 67 fixed to the support plate 5 through the vertically elongated slide hole 1b formed in the chassis 1, and the stepped slide hole 57d is inserted into the chassis 1. A pin 68 fixed to the support plate 5 is engaged through a vertically extending slide hole 1c formed in the.

14 to 1 from the lowest position of the support plate 5 shown in FIGS. 8, 9, 12 and 13.
When the support plate 5 shown in FIG. 7 is raised to the highest position, the motor 50 is driven and the gears 51, 52, 53 and 54 are used to move the gear 55 counterclockwise in FIG. Rotate in G direction). Then, the right slide plate 56 provided with a rack 56e meshed with the gear 55 slides toward the rear of the device (B ₁ direction). A rotary arm 59 having a pin at one end that engages with the cam hole 56f of the drive end 56g in conjunction with the sliding of the right slide plate 56 in the B ₁ direction is shown with a shaft 59a as the center. It rotates in the H direction shown in FIGS. In conjunction with the rotation of the rotating arm 59, the left slide plate 57 having a driven end 57f that engages with the other end of the rotating arm 59 by a pin moves toward the front of the device (B ₂ direction). .
In this way, when the right slide plate 56 slides in the B ₁ direction and the left slide plate 57 slides in the B ₂ direction at the same time, the pin 64 that engages with the stepped cam hole 56d of the right slide plate 56 and the left slide plate 57 stepped cam holes 57
The support plate 5 supported by the pins 67 and 68 that engage with c and 57d, respectively, includes the cam holes 56d and 5d.
Ascend along 7c and 57d. In the present embodiment, all the cam holes 56d, 57c, 57d have the same shape, and each has five horizontal portions and inclined portions that connect the horizontal portions. The height corresponds to the height of each tray of the magazine 2 stored in the storage unit 3. Also,
The height of the support plate 5 is the same as the detection end 5 of the right slide plate 56.
6h can be known by, for example, optically detecting it.

From the highest position of the support plate 5 shown in FIGS. 14 to 17 to the lowest position of the support plate 5 shown in FIGS. 8, 9, 12, and 13,
When lowering the support plate 5, the motor 50 is driven to rotate the gear 55 clockwise (J direction) in FIG. 8 by the gears 51, 52, 53 and 54.
Then, the support plate 5 is moved to the chassis 1 by an operation which is completely opposite to the case where the support plate 5 is raised.
To descend.

As described above, the elevating mechanism 6 is composed of extremely few structural members such as the motor 50, the gear train, the two slide plates 56 and 57, and the rotating arm 59, and has a very simple structure. Therefore, the size and weight of the device can be reduced and the cost can be reduced. [Loading Mechanism 7] FIGS. 18 to 28 relate to the loading mechanism 7 of the disk device shown in FIG.
The loading mechanism 7 pulls out the tray 9 from the magazine 2 to the vicinity of the turntable 20 (reproduction position) or pushes the tray 9 from the vicinity of the turntable 20 to the magazine 2 (standby position) and a tray moving mechanism 7a near the turntable 20. A disc holding / releasing mechanism (hereinafter, simply referred to as “disc holding mechanism”) that holds the disc 10 on a tray 9 on the turntable 20 or releases the holding.
Say. ) 7b. However, the tray moving mechanism 7a
The disk holding mechanism 7b and the disk holding mechanism 7b are not completely independent and separate structures but have a partially common structure. After the tray moving mechanism 7a completes the movement operation of the tray 9 (direction B ₁ ), the disk holding mechanism 7b continues to operate. After the disc holding operation by the holding mechanism 7b is performed and the disc holding release operation by the disc holding mechanism 7b is performed, the movement operation (B ₂ direction) of the tray 9 is subsequently performed.

FIG. 18 is a plan view schematically showing the loading mechanism 7. As shown in FIG. 18, the loading mechanism 7 includes a guide hole 7 formed in the support plate 5.
0 (for this reason, the support plate 5 functions as a guide member), and a long columnar shape having a spiral thread (male thread portion) on the outer periphery and extending in the front-rear direction (B ₂ or B ₁ direction) of the disk device. And a drive mechanism 72 for rotating the worm 71 about its axis. Also,
The loading mechanism 7 includes a screw groove (female screw portion) 73a (shown in FIG. 19) that meshes with the male screw portion of the worm 71,
An engaging groove 73b that engages with a second pin 75 described later is provided, and a first moving member 73 that moves in the longitudinal direction of the worm 71 by the rotation of the worm 71 is provided. Further, the loading mechanism 7 includes the first pin 74 that engages with the guide hole 70, the second pin 75 that engages with the guide hole 70 and the engagement groove 73b of the first moving member 73, and the tray 9. Hook 7 that engages with protrusion 9a of tray 9 when moving
6 a and a second moving together with the first moving member 73.
Of the moving member 76. As shown in FIG. 18, the worm 71 has a bearing 77, which is fixed to the support plate 5,
It is rotatably supported by 78. Further, the worm 71 is arranged in parallel with the straight portion 70 a of the guide hole 70.

Further, the loading mechanism 7 has a rotating shaft 90 provided upright on the support plate 5, and a rotating plate 91 supported by the rotating shaft 90. The rotating plate 91 has a first recess 91a and a second recess 91b. The support plate 5 is provided on the lower surface of the rotating plate 91.
The movable member 29 (shown in FIGS. 9 and 15 and later-described FIGS. 24 and 25) provided underneath is provided with a pressing pin 92 that comes into contact with a bent portion 29a formed at the end thereof. still,
In FIG. 18, 93 is a slide plate which slides along the cam holes 5b and 5c formed in the support plate 5, and 94
And 95 are erected on each slide plate 93, the pin engaging the cam hole 5b, the 5c, 96 attracts pin 94 which engages the second recess 91b of the rotating plate 91 to the rear (B ₁ direction) It is a coil spring.

Further, the loading mechanism 7 includes a disk holding member 29b for pressing the disk 10 against the turntable 20, a movable member 29 for supporting the disk holding member 29b, a support member 31, for supporting the movable member 29 on the support plate 5, 32 and the movable member 29 to the turntable 2
And a leaf spring 30 that urges it toward zero.

As shown in FIG. 18, the drive mechanism 72 meshes with a motor 80 provided on the support plate 5, a gear 81 fixed to the tip of a rotary shaft 80 a of the motor 80, and the gear 81. Large diameter gear 82,
A small diameter gear 83 concentrically fixed to the gear 82,
The idle gear 84 meshes with the gear 83, and the gear 85 meshes with the idle gear 84 and is fixed to the worm 71. Therefore, when the motor 80 is driven,
The driving force is transmitted to the gear 85 via the gear train composed of the gears 81, 82, 83, 84, and the gear 85 rotates and at the same time the worm 71 rotates.

FIGS. 19A and 19B show the first moving member 73. FIG. 19A is a plan view and FIG. 19B is a drawing shown in FIG.
A front view seen in the K direction in FIG.
(Or (b) in the figure) is a side view seen in the L direction, and (d) is a bottom view. As shown in FIG. 19, the first
The moving member 73 is formed with a female screw portion 73a formed from a through hole that engages with the worm 71 and a screw groove, an engaging groove 73b formed on the bottom surface, a recess 73c formed on the bottom surface, and an upper surface. It has a protrusion 73d that engages with the first recess 91a of the rotating plate 91, and an abutment portion 73e that comes into contact with a position detection switch described later. The first moving member 73 is
With the rotation of the worm 71, the worm 71 and the female screw portion 73a meshing with the worm 71 move in the front-rear direction (B ₂ or B ₁ direction) of the disk device. In addition, in FIG. 18, reference numerals 97 and 98 respectively denote switches that contact the contact portion 73e of the first moving member 73 to detect the position of the first moving member 73.

FIG. 20 (a) is a plan view showing the second moving member 76, and FIG. 20 (b) is a side view seen in the M direction in FIG. 20 (a). In addition, FIG. 21 shows a worm 71, a guide hole 70, a first moving member 73, and a second moving member 73.
FIG. 9 is a cross-sectional view for explaining the relationship between the moving member and the moving member. As shown in FIGS. 20 (a) and 20 (b), the second moving member 76 includes a hook 76 a that engages with the protrusion 9 a of the tray 9 when the tray 9 is pulled out from the magazine 2, and a tray on the magazine 2. 9 has a base portion 76b of a hook 76a that pushes the protrusion 9a of the tray 9 when pushing back. Further, on the upper surface of the second moving member 76, the first pin 74 engaging with the guide hole 70 of the support plate 5 and the guide hole 7 are provided.
0 and a second pin 75 that engages with the engaging groove 73b of the first moving member 73. As shown in FIG. 21, when the worm 71 rotates and the first moving member 73 moves in the front-rear direction (B ₂ or B ₁ direction), the engaging groove 73b of the first moving member 73 and the second The engagement of the moving member 76 with the second pin 75 also causes the second moving member 76 to move to the first position.
The moving member 73 moves along the guide hole 70.

Next, the operation of the tray moving mechanism 7a of the loading mechanism 7 will be described. 22 and 23 are operation explanatory views for explaining the operation of pulling out the tray 9 from the magazine 2, and FIG. 22 shows the first and second moving members 7
3 and 76 are closest to the storage portion 3 side, and the second moving member 76 is inclined. In FIG. 23, the first and second moving members 73 and 76 are slightly rearward (B). ₁ direction)
And the hook 76a of the second moving member 76 moves to the tray 9
Shows the state in contact with.

When the user inserts the magazine 2 into the storage section 3 and when the magazine 2 is taken out from the storage section 3,
As shown in FIG. 22, the first and second moving members 73 and 76 are located closest to the storage section 3 side. At this time, the rotation of the worm 71 causes the first moving member 73 to move most to the storage portion 3.
The second moving member 76, which has moved to the side and has moved to the most storage part 3 side together with the first moving member 73, moves clockwise around the second pin 75 as shown in FIG. It is rotating. This rotation is caused by the first pin 74 entering the first inclined portion 70b when the first moving member 73 is moved closest to the storage portion 3 side.

After inserting the magazine 2 into the storage section 3 through the opening 3a, when the user gives an instruction to reproduce a desired disc using an operation button (not shown), the elevating mechanism 6 already described causes the reproducing section 4 and The support plate 5 provided with the loading mechanism 7 moves up and down and stops at a height corresponding to the tray 9 on which the selected disk 10 is placed. After that, when the worm 71 is rotated by the drive mechanism 72,
The first moving member 73 is the most storage unit 3 shown in FIG.
Move from the side to the rear (B ₁ direction). At this time, the second moving member 76 moves backward (B ₁ direction) together with the first moving member 73. The second moving member 76 is shown in FIG.
If you move backward (B ₁ direction) from the position shown in 2,
The first pin 74 comes out of the first inclined portion 70b and goes straight.
Go into 0a. At this time, the second moving member 76 rotates (counterclockwise in FIGS. 22 and 23) about the second pin 75. When the second moving member 76 has finished rotating, the hook 76a of the second moving member 76 is located near the protrusion 9a of the tray 9, as shown in FIG. When the worm 71 further rotates from this state (shown in FIG. 23), the hook 76a of the second moving member 76 hooks the protrusion 9a of the tray 9, and the worm 7
When 1 is rotated, the tray 9 is pulled out from the magazine 2 together with the second moving member 76 that moves backward (B ₁ direction).

Next, the operation of the disc holding mechanism 7b of the loading mechanism 7 will be described. 24 is a plan view showing a state in which the tray 9 is pulled out by the second moving member 76, and FIG. 25 shows an operation of holding the pulled-out disc 10 on the tray 9 on the turntable 20. It is a top view for explaining. In addition, FIG.
FIG. 27 is an enlarged view of an essential part corresponding to FIG. 27, and FIG. 27 is an enlarged view of an essential part corresponding to FIG. In addition, FIG.
FIG. 28 is a front view schematically showing the disc holding mechanism 7b when viewed in the N direction, and FIG.
It is a front view which shows schematically the disc holding mechanism 7b when it sees in a direction.

The disk 10 by the disk holding mechanism 7b
24, when the tray 9 is completely pulled out,
It starts from the state of FIGS. 26 and 28 (a). In this state, when the worm 71 is rotated to move the first moving member 73 further rearward (B ₁ direction), the first moving member 7
The protruding portion 73d of No. 3 engages with the recess 91a of the rotating plate 91, and the rotating plate 91 rotates clockwise (P direction). At the same time, the second pin 7 of the second moving member 76 is
Reference numeral 5 denotes a portion from the linear portion 70a of the guide hole 70 to the second inclined portion 7
0c, and as shown in FIGS. 25 and 27,
The second moving member 76 rotates in the direction in which the hook 76 a moves away from the tray 9. Further, by rotating the rotating plate 91, as shown in FIG. 28B, the pressing pin 92 provided on the rotating plate 91 causes the end portion 2 of the movable member 29 to move.
Move away from 9a. Then, the movable member 29 is pressed against the turntable 20 by the leaf spring 30, and the holding member 29b moves the disk 10 to the turntable 20.
Sandwiched between. This completes the disc loading operation. When releasing the disc holding state, the worm 71 is rotated in the opposite manner to the case of the loading operation, so that the state shown in FIGS.
From the disc holding state shown in (b), the rotating plate 91 rotates, and the pressing pin 92 causes the bending portion 2 of the movable member 29 to rotate.
9b is contacted and the bent portion 29b is pushed downward. Then, the movable member 29 is lowered, the holding member 29a is separated from the turntable 20, and the disc holding release state shown in FIGS. 24, 26, and 28 (a) is entered. Thereafter, by continuing to rotate the worm 71, the tray 9 is moved by the base portion 76b of the hook 76a of the second moving member 76.
Push into magazine 2. That is, the state shown in FIGS. 24 and 26 shifts to the state shown in FIG. This completes the operation of pushing the tray 9 into the magazine 2.
After that, the worm 71 further rotates and shifts to the state shown in FIG. That is, the hook 76a of the first moving member 76 is separated from the protruding portion 9a of the tray 9 and the magazine 2
Can be discharged from the storage section 3. This completes the unloading operation.

As described above, the guide hole 70 which is long in the front-rear direction of the disk device, the worm 71, the first and second moving members 73 and 76, the rotating plate 91, the movable member 29 and the holding member 29a, and The tray 2 has very few components such as the leaf springs 30 and has an extremely simple configuration.
Since the complicated loading operation of pulling out the disk from the magazine 2 and holding the disk 10 on the turntable 20 and the reverse unloading operation can be executed, the disk device can be made smaller and lighter. Moreover, since the loading mechanism 7 is provided only in the left half of the support plate 5, the arrangement of the other mechanisms is extremely easy. Further, since the loading mechanism 7 does not have any protrusion to the outside from the support plate 5, it is particularly effective when it is desired to downsize the disk device in the width direction.

[0043]

As described above, according to the present invention,
Since it is possible to perform a complicated loading operation of pulling out the tray from the magazine and holding the disc at the recording / reproducing position and vice versa by using extremely few components and an extremely simple structure,
There is an effect that the size and weight of the disk device can be reduced.

[Brief description of drawings]

FIG. 1 is a perspective view schematically showing an external appearance (only a main configuration) of an example of a disk device according to the present invention.

FIG. 2 is an enlarged plan view showing a lock / eject mechanism when a magazine starts to be inserted.

FIG. 3 is an enlarged plan view showing a lock / eject mechanism when a magazine is held in a storage section.

4A is a schematic sectional view taken along line II-II of FIG. 2, and FIG. 4B is a schematic sectional view taken along line III-III of FIG.

FIG. 5 is a plan view of the magazine when the tray is not pulled out.

FIG. 6 is a front view of the magazine as seen in the direction C in FIG.

FIG. 7 is a plan view of the magazine when the tray is pulled out.

FIG. 8 is a plan view schematically showing the disc device when the support plate is at the lowest position.

FIG. 9 is a bottom view schematically showing the disc device when the support plate is at the lowest position.

FIG. 10 is an enlarged plan view showing a moving mechanism of the optical pickup.

FIG. 11 is an enlarged front view showing a rotating member of the pulse generating unit.

FIG. 12 is a side view showing the right slide plate when the support plate is at the lowest position.

FIG. 13 is a side view showing the left slide plate when the support plate is at the lowest position.

FIG. 14 is a plan view schematically showing the disc device when the support plate is at the highest position.

FIG. 15 is a bottom view schematically showing the disc device when the support plate is at the highest position.

FIG. 16 is a side view showing the right slide plate when the support plate is at the highest position.

FIG. 17 is a side view showing the left slide plate when the support plate is at the highest position.

FIG. 18 is a plan view showing a loading mechanism.

19A is a plan view of the first moving member, FIG. 19B is a front view of the first moving member seen in the K direction in FIG. 18, FIG.
18C is a side view of the first moving member viewed in the L direction in FIG. 18, and FIG. 18D is a bottom view of the first moving member.

FIG. 20 shows the left slide plate when the support plate is at the highest position, FIG. 20 (a) is a plan view, and FIG. 20 (b) is a side view when seen in the M direction in FIG. 20 (a). Is.

FIG. 21 is a cross-sectional view showing the relationship among a worm, a guide hole, a first moving member, and a second moving member.

FIG. 22 is an operation explanatory view (No. 1) for explaining the operation of pulling out the tray from the magazine.

FIG. 23 is an operation explanatory view (No. 2) for explaining the operation of pulling out the tray from the magazine.

FIG. 24 is a plan view showing a state in which the tray pull-out operation by the second moving member is completed.

FIG. 25 is a plan view for explaining the operation of holding the drawn disk on the tray on the turntable.

FIG. 26 is an enlarged view of a main part corresponding to FIG. 24.

FIG. 27 is an enlarged view of a main part corresponding to FIG. 25.

28A is a front view schematically showing the disc holding mechanism when FIG. 24 is viewed in the N direction, and FIG.
FIG. 26 is a front view schematically showing the disc holding mechanism when FIG. 25 is viewed in the N direction.

[Explanation of symbols]

1 chassis 2 magazines 2d guide groove 2e Straight part 2f branch 3 storage 4 playback section 5 Support plate 6 Lifting mechanism 7 Loading mechanism 7a Tray moving mechanism 7b Disk holding mechanism 8 Lock / eject mechanism 9 trays 10 discs 11 Upper plate 11a guide hole 11b Guide hole 14 Lock plate 14a Engagement pin 14b protrusion 14c end 15 coil spring 23 Warm 26 Guide shaft 27 Optical pickup 28 Drive mechanism 20 turntable 29 Holding member 30 leaf spring 37 Rotating member 38 light emitting device 39 Light receiving element 40 pulse generator 56 Right slide plate 57 Left slide plate 59 rotating arm 70 Guide hole 70a Straight part 70b First inclined portion 70c Second inclined portion 71 Warm 73 First moving member 73a female screw part 73b engagement groove 73d protrusion 74 First Pin 75 second pin 76 Second moving member 76a hook 76b Hook base 80 motor 91 Rotating plate 91a recess 92 Push pin

─────────────────────────────────────────────────── ─── Continuation of front page (56) Reference JP-A-5-347064 (JP, A) JP-A-3-171467 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) G11B 17/26

Claims (4)

(57) [Claims] 1. A storage unit for storing a tray on which a disc is placed in a standby position, a recording / reproducing unit for performing at least one of reading information from the disc and writing information to the disc, and the tray. In a disk device having a loading mechanism for performing a loading operation for moving the storage section to the recording / reproducing section and an unloading operation for moving the tray from the recording / reproducing section to the storage section, the loading mechanism has an outer periphery. A worm having a male screw portion and extending in parallel to the moving direction of the tray, a drive mechanism for rotating the worm about its axis, a female screw portion meshing with the male screw portion of the worm, and the tray when moving the tray. And a hook that engages with the tray. A moving member which moves in the longitudinal direction of the guide hole with straight portions parallel to the moving direction of the tray
A guide member is formed, the moving member includes the male screw portion and an engaging groove, and is configured to rotate the worm.
Therefore, the first moving portion that moves in the longitudinal direction of the worm
Material, a first pin that engages with the guide hole of the guide member, and
The guide hole of the guide member and the engagement of the first moving member
The second pin engaging the groove, the hook, and the protrusion
And a second moving unit that moves together with the first moving member.
And a disk material . 2. The guide hole of the guide member has a first inclined portion extending from an end portion of the linear portion on the accommodation portion side in a direction inclined with respect to the linear portion. At this time, by moving the second moving member toward the storage portion and guiding the first pin from the linear portion to the first inclined portion,
The hook moves the second moving member in a direction away from the tray, while the second moving member moves in a direction away from the storage unit during the loading operation, and the first moving member moves away from the storage unit. the pin from the first inclined portion by directing to the straight portion, the hook according to claim 1, characterized in that rotating the second moving member in a direction to engage with the tray Disk device. 3. The loading operation according to claim 3, wherein the guide hole of the guide member has a second inclined portion extending from an end of the linear portion opposite to the accommodating portion in a direction inclined with respect to the linear portion. In this case, the second moving member is moved in a direction away from the storage portion, and the second pin is guided from the linear portion to the second inclined portion while moving the second pin in the engagement groove. Thereby rotating the second moving member in a direction in which the hook moves away from the tray, while moving the second moving member toward the storage portion during the unloading operation. By guiding the second pin to the straight portion while moving the second pin in the engagement groove, the second moving member is rotated in the direction in which the hook engages with the tray. claim 1乃, characterized in that The disk apparatus according to any one of 2. 4. The guide hole of the guide member has a second inclined portion extending in a direction inclined from the end of the linear portion on the side opposite to the accommodating portion, the second inclined portion, The moving member has a protrusion, the loading mechanism holds the disc on the turntable, the clamp means, the spring member for pushing the clamp means toward the turntable, and the protrusion. The clamp means for holding the clamp means in the direction of separating from the turntable against the urging force of the spring member, or for releasing the hold of the clamp means. At this time, the second moving member is moved in a direction away from the storage portion, and the second pin is guided from the linear portion to the second inclined portion while moving the second pin in the engagement groove. Therefore, while the hook moves the second moving member in the direction away from the tray, the holding of the clamp means is released by the engagement with the protrusion of the second moving member, while the unloading is performed. In operation, the second moving member is moved in a direction toward the storage portion, and the second pin is guided from the second inclined portion to the straight portion while moving the second pin in the engagement groove. As a result, the second moving member is rotated in a direction in which the hook engages with the tray, and the clamping means is separated from the turntable by engagement with the protrusion of the second moving member. 3. The disk device according to claim 1 , wherein the disk device is held by the disk device.