JP2936972B2 - 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 disk device for reproducing or writing an information recording disk of a magneto-optical recording type mini disk cartridge.

[0002]

2. Description of the Related Art In recent years, a disk cartridge (hereinafter referred to as a cartridge) in which an information recording disk is stored in a protective cartridge case has been proposed. An example of this type of cartridge is a magneto-optical recording type mini-disc cartridge. The cartridge 100 includes an information recording disk 102 housed in a cartridge case 101 as shown in FIG. Disk access hole 103 provided in
And a slide shutter 104 for opening and closing the disk access hole 103. A cartridge holding recess 105 is formed on the front left and right sides of the back surface of the cartridge case 101.
A groove 106 extending in the front-rear direction is formed on the right end surface of the shutter. A shutter locking member (not shown) is provided in the middle of the groove 106. The shutter locking member is provided with a spring ( (Not shown)
It can be withdrawn. The locking claw 107 of the slide shutter 104 is locked to the shutter locking member. Further, a shutter opening / closing hole 108 is formed in the right end surface of the slide shutter 104.

[0003] As a device for recording and reproducing information on the cartridge 100, there is a disk device. In this disk drive, the loader moving mechanism has a rack member 110 on which a loader 109 is mounted, and a gear 112 that meshes with a rack tooth 111 of the rack member 110, as shown in FIG. It is linked to the drive motor pinion via a row.

[0004] The gear 11 is connected to the driving gear train.
2 rotates, the rack member 110 meshing with the gear 112 at the rack teeth 111 moves, and the loader 109 moves.

[0005]

However, in the above-mentioned conventional disk drive, when the loader 109 is moved by a distance L as shown in FIG. In addition, a space of length D was required.

The rack member 110, ie,
When an external force acts on the loader 109, the external force is transmitted to the drive gear train via the gear 112,
There is a problem that the gear 112 and the like are damaged.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and its object is not only to reduce the space required for moving the loader, but also to damage the gears of the drive unit. It is an object of the present invention to provide a disk device capable of preventing the occurrence of a disk drive.

[0008]

In order to achieve the above object, according to the present invention, a first rack member and a second rack member can be moved on a fixed chassis in a moving direction of a loader. , A guide pin is provided in the first rack member, a guide hole is formed in the second rack member, the guide pin is passed through the guide hole, and an end of the guide pin is connected to the loader, The first and second rack members
Provided with a spring locking portions, respectively, passing over the spring between these spring engagement portion, set on the second rack member
Providing a gear that meshes with the first rack toothed portion;
The rotation of the gear causes the second rack member to move,
When the gear reaches the end of the second rack member, the gear
Is a second rack tooth portion provided on the first rack member
It is characterized by engaging with.

[0009]

With this configuration, the gear rotates through the drive gear train, and the second rack member meshing with the gear at the rack teeth moves in one direction of the loader movement direction.
The guide pin is pushed by the end of the guide hole formed in the rack member, and the loader moves in one of the loader moving directions. In this case, along with the movement of the loader, the first rack member moves in one of the loader moving directions.

When the gear reaches the end of the rack teeth of the second rack member, the gear meshes with the rack teeth of the first rack member. When the gear leaves the rack teeth of the second rack member, it meshes only with the rack teeth of the first rack member, and moves the first rack member in one of the loader moving directions. This movement causes the loader to move in one of the loader movement directions via the guide pins.

As described above, the second rack member is sent by the rotation drive of the gear, and the loader moves, and thereafter, the first rack member is sent without sending the second rack member, and Since the loader moves, the required space can be reduced as compared with a case where the loader is sent by a single rack member.

Further, since the first and second rack members are connected by a spring, an external force acts on the first rack member, that is, the loader in a state where the gear is engaged with the second rack member. In this case, since the first rack member simply moves to extend the spring, no external force is transmitted to the drive gear train via the gear, so that damage to the gear and the like can be prevented.

[0013]

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of a disk drive according to the present invention with a part omitted, FIG. 2 is a perspective view of the disk drive with a part of an upper chassis removed, and FIG. 3 is an exploded perspective view of the disk drive. 1 to 3, the Y direction is the rear, and the Z direction is the front.

As shown in FIGS. 1 to 3, the disk drive according to the present invention includes a main chassis 1, a suspension chassis 2, and an upper chassis 3 which is a fixed chassis. The main chassis 1 is a quadrangular frame-like body, and has a front face 1a formed with a cartridge insertion opening 4 formed of a notch. Damper attachment portions 5 are formed on the left and right portions 6a and 6b and the rear portion 6c of the main chassis 1, and the left and right surface portions 1b and 1 of the main chassis 1 are formed.
The portion of c and the rear surface portion 1d facing the damper mounting portion 5 is a cutout portion 26a. Notches 26 are formed at the rear of the left and right portions 6a and 6b of the main chassis 1. Further, spring locking pieces 7 are provided at four corners of the main chassis 1. Further, a double insertion prevention lever 13 is provided in the cartridge insertion opening 4 with a slight movement in the vertical direction.

A mechanical lock mechanism A is provided on the left and right portions 6a and 6b of the main chassis 1.
This mechanical lock mechanism A has front and rear lock members 8 and 9 as shown in FIGS. 7 and 8, and lock portions 10 and 11 are formed at the leading ends of these lock members 8 and 9. Each of the lock portions 10 and 11 has a guide portion 12 that converges with the lock recesses 10a and 11a at the center thereof.
8 are formed.

The front and rear lock members 8 and 9 are attached to horizontal guide holes 14 and 15 formed in the right side portion 6b by pins 16 and 17 so as to be movable in the front and rear direction. A lever 1 is provided on the right side 6b of the main chassis 1.
9 has a middle portion supported by a fulcrum pin 20 so as to be rotatable. A front end of the lever 19 is connected to a rear end of a connecting rod 21 by a pin 22.
The front end of the lock member 8 is connected to the rear end of the lock member 8 by a pin 23. A guide pin 24 is attached to the rear end of the lever 19, and the guide pin 24 is movably inserted into the elongated hole 18 and the notch 26. On the front side of the lever 19, an operating pin 25 which protrudes inside the main chassis 1 is mounted.

The suspension chassis 2 has a 4
Spring corners 27 are provided at the two corners, and springs 28 are extended between the spring engagement pieces 27 and the spring engagement pieces 7 of the main chassis 1. 2 is held by the main chassis 1 in a floating state. A damper 29 is interposed between the suspension chassis 2 and the main chassis 1. The damper body 29a of the damper 29 is fixed to the damper mounting portion 5 of the main chassis 1.
Also, the left and right side portions 2 of the suspension chassis 2
Lock pins 30 and 31 are fixed before and after a and 2b, and the front lock pin 30 is located in the notch 26a and located in front of the lock 10 of the lock member 8;
The rear lock pin 31 is located inside the cutout portion 26 and is located behind the lock portion 11 of the lock member 9. This state is a lock release state.

The suspension chassis 2 has a turntable disposed at the center thereof, and the suspension chassis 2 has a punching portion (see FIG. 4) positioned to the right of a turntable (not shown). Not shown)
However, optical pickups (not shown) are provided in the punching portions, and the optical pickups are moved in the left-right direction (radial direction of the disk) by a screw feed mechanism (not shown). is there. On the back side of the suspension chassis 2, a mechanism such as a drive motor of a turntable is provided.

As shown in FIG. 4A, holder guides 34 and 35 are provided on the left and right side surfaces 2a and 2b of the suspension chassis 2, respectively. The left holder guide portion 34 includes a linear guide hole 36 formed in the left side surface portion 2a from the front portion to the rear portion, and a descending hole 37 that extends downward from the rear end of the guide hole 36. The guide portion 35 includes a linear guide hole 38 formed from the front portion to the rear portion of the right side surface portion 2b, a downward hole 39 which is directed downward at an intermediate portion of the guide hole 38, and a downward direction from the rear end of the guide hole 38. Descending hole 40,
And a slide guide member 41 having elasticity arranged in parallel along the right side surface portion 2b. Further, the suspension chassis 2 is provided with a stopper 60 located at the rear right side to prevent the shutter opener 49 from moving backward.

The suspension chassis 2 has holder guide portions 34, 3 on its left and right side portions 2a, 2b.
5, the holder 43 is provided so as to be movable in the front-rear direction. That is, the left side of the holder 43 is shown in FIG.
As shown in FIG. 5, a holding portion 44 having a reverse U-shaped cross section is formed, an end face of the holding portion 44 is a left side surface portion 44a, and a right side portion of the holder 43 is bent at a right angle, and a right side portion 4 is formed.
4b is formed. One holder pin 42 is attached to the front of the left side portion 44a of the holder 43, and two holder pins 45a and 45b are attached to the right and left side portion 44b, respectively. As shown in FIG. 6A, a cartridge gripping hook 46 is mounted on the left and right sides on the back side of the holder 43 so as to be swingable in the left and right directions by pins 47. The spring 46 is biased toward the center of the holder 43 by a spring 48. A cartridge receiving portion 63 is formed on the left and right sides of the surface of the holder 43 (see FIG. 5).

A shutter opener 49 is mounted on the right side of the holder 43 thus constructed so as to be movable in the front-rear direction. That is, this shutter opener 4
9 is an upper surface portion 49a slidingly contacting the right side portion of the holder 43.
And an outer surface portion 49b.
Are formed with slide holes 50 along the front-rear direction, and holding pins 51a and 51b also serving as shutter closing spring release pins are inserted into the slide holes 50 in front and behind the right side of the holder 43, respectively. Holding pin 51
a and 51b hold the shutter opener 49.

As shown in FIGS. 6A and 6B, an inner surface portion 52 and a horizontal surface portion 53 are formed inside the front portion of the shutter opener 49, and an opening portion 54 is formed in the inner surface portion 52. The front end portions of the inner side surface portion 52 and the horizontal surface portion 53 are open to the outside.
The cartridge insertion portion 58 is constituted by the inner side surface portion 52, the horizontal surface portion 53, and the holding portion 44 on the left side of the holder 43.

A shutter unlocking claw 55 is provided inside the intermediate portion of the shutter opener 49.
Further, a base portion 56a of a shutter closing spring 56 is fixed inside the outer side surface portion 49b of the shutter opener 49, and the shutter closing spring 56 is bent inward.
The distal end is formed with a locking portion 56b bent in a V shape in plan view, and the locking portion 56b projects from the opening 54 into the cartridge insertion portion 58. A stopper 57 is formed at the rear end of the shutter opener 49. The holding pin 51a on the front side constitutes a relief mechanism for retracting the locking portion 56b of the shutter closing spring 56 out of the cartridge insertion portion 58 through the opening 54.

The holder 43 to which the shutter opener 49 is attached as described above is mounted on the left side guide portion 42 of the suspension chassis 2.
a, and slidably inserts the right front guide pin 45a into the guide hole 38 of the holder guide portion 35 of the right side portion 2b of the suspension chassis 2. It is slidably in contact with the lower surface of the member 40 and is movably inserted. The right rear guide pin 45b is connected to the holder guide portion 35 of the right side portion 2b of the suspension chassis 2.
Are movably inserted into the guide holes 38 while slidingly contacting the upper surface of the slide guide member 40, and attached to the suspension chassis 2.

As shown in FIG. 3 and FIG. 9A, a loader guide 65 is fixed in the front-rear direction on the left side of the rear surface of the upper chassis 3.
Is formed with a guide hole 66 extending in the front-rear direction. A guide hole 67 is formed in the rear portion of the upper chassis 3 along the left-right direction.

On the back surface of the upper chassis 3, a loader 68 and a loader moving mechanism C for reciprocating the loader 68 are provided. The loader 68 has a face 68
a right and left side portions 70 and 71 bent at right angles to the surface portion 68a.
, Holder pin engaging portions 72 and 73 are formed in the front and rear, and a lock pin engaging portion 74 is formed in the middle portion. The holder pin engaging portions 72 and 73 have engaging pieces 72a and 73a protruding forward, and the lock pin engaging section 74 has an engaging piece 74a protruding backward. I have. Further, the left side surface portion 70 has a front portion provided with a holder pin engaging portion having the same configuration as the holder pin engaging portion 72, and an intermediate portion provided with a lock pin engaging portion having the same configuration as the lock pin engaging portion 74. Are formed respectively.

A guide hole 68b is formed on the rear right side of the loader 68 along the left-right direction. As shown in FIG. 2, a front end of a link 78 is attached to the left rear end of the surface 68a of the loader 68 with a pin 79, and a guide pin 80 is provided at the rear end of the link 78. The guide pins 80 are inserted into the guide holes 67 at the rear of the upper chassis 3. A rear end of a link 81 is attached to the right rear end of the upper chassis 3 with a pin 82, and a guide pin 83 is provided at a front end of the link 81. The guide pin 83 is connected to the loader 68. Are inserted into the rear guide holes 68b, and the links 78, 81
Are rotatably connected to each other by a pin 84 at a central intersection.

The loader moving mechanism C is shown in FIGS.
As shown in FIG. 7, a first rack member 85 and a second rack member 86 are provided along the loader guide 65, and the first rack member 85 is slidable at the end of the second rack member 86. The second rack member 8
A front and rear guide hole 88, 89 is formed in the rising wall portion 87 of FIG. Guide pins 91 and 92 are fixed to the front and rear of the rising wall portion 90 of the first rack member 85. The front guide pin 91 penetrates the guide hole 88, and the rear guide pin 92 is The ends of these guide pins 91 and 92 are connected to the right side 71 of the loader 68.

At the rear end of the first rack member 85, a spring locking portion 93 is provided.
Is provided with a spring locking portion 94 at the front end thereof, and a spring 95 extends between the spring locking portions 93 and 94.

A gear 96 meshes with the rack teeth 86a of the second rack member 86, and a pinion of a drive motor (not shown) provided on the back surface of the upper chassis 3 is a drive gear train (not shown). G) through the gear 96
Is linked to

The upper chassis 3 constructed as described above is superposed on the main chassis 1 and fixed to the main chassis 1. In this case, the loader 68
Front and rear holder pin engaging portions 72 and 73 provided on the right side of the loader 68 are slidably engaged with the holder pins 45a and 45b, and the holder pin engaging portion 72 provided on the left side of the loader 68 is provided with the holder pin. 42 is slidably engaged. A cartridge entrance 98 is formed by the front edge of the upper chassis 3 and the cartridge insertion slot 4 of the main chassis 1.

Before the cartridge 100 (same as that described in the above-mentioned prior art) is inserted, the suspension chassis 2 is locked to the main chassis 1 by the left and right mechanical lock mechanisms A. That is, the lock member 8 on the front side of the mechanical lock mechanism A
Is moved forward, the lock portion 10 at the front of the lock member 8 grips the front lock pin 30 of the suspension chassis 2, and the rear lock member 9 is moved rearward. Of the suspension chassis 2 grips the lock pin 31 on the rear side of the suspension chassis 2.

Next, the operation of the disk device configured as described above will be described. As shown in FIG. 6 (3), when the holder 43 is located on the cartridge entrance 98 side, the holding pin 51a also serving as a shutter closing spring release pin of the holder 43 is located forward and the shutter closing spring is located. Interference with an intermediate portion of the shutter 56 causes the locking portion 56 b at the tip of the shutter closing spring 56 to be retracted from the opening 54.

When the cartridge 100 is inserted into the cartridge insertion portion 58 of the holder 43 from the cartridge entrance 98 and the front end surface of the cartridge 100 is brought into contact with the cartridge receiving portion 63 of the holder 43, the shutter opener 49 The shutter release hook 55 is inserted into the groove 106 of the cartridge 100, and the left and right cartridge gripping hooks 46 of the holder 43 engage with the left and right cartridge gripping recesses 105 of the cartridge case 101.
00 is the holder 4 via the cartridge gripping hook 46.
3 is held.

When the cartridge 100 is pushed in, power is supplied (switched on) to a control circuit (not shown) of the drive motor of the loader moving mechanism C, and the loader 6 is moved by the loader moving mechanism C.
8, the slide shutter of the cartridge 100 is released, the lock of the suspension chassis 2 is released, and the cartridge 100 is automatically retracted.

(Operation of the Loader 68) The drive motor drives the gear 96 to rotate via a pinion and a drive gear train, and the second rack member 86 meshing with the gear 96 at the rack teeth 86a moves rearward. The guide pins 91 and 92 are pushed by the front ends of the guide holes 88 and 89 formed in the second rack member 86, and the loader 68 moves rearward. In this case, along with the movement of the loader 68, the first rack member 85 moves rearward. The gear 96 is the second
When reaching the tip side of the rack tooth portion 86a of the rack member 86,
The gear 96 meshes with the rear portion of the rack tooth portion 85a of the first rack member 85. Then, when the gear 96 leaves the rack teeth portion 86a of the second rack member 86, it meshes with only the rack teeth portion 85a of the first rack member 85, and moves the first rack member 85 backward. This movement causes the loader 68 to move rearward via the guide pins 91 and 92. The second rack member 86 moves rearward via the spring 95 due to the rearward movement of the first rack member 85.

(Release operation of the slide shutter 104 in the cartridge 100) Front and rear holder pin engaging portions 72, 73 provided on the right side of the loader 68 are slidably engaged with the holder pins 45a, 45b. Further, a holder pin engaging portion 7 provided on the left side of the loader 68 is provided.
2 is slidably engaged with the holder pin 42, the rearward movement of the loader 68 causes the holder 43 to move rearward, and the cartridge 100 to move rearward.

For this reason, the holder 43 is retracted, the holding pin 51a is disengaged from the intermediate portion of the shutter closing spring 56, and the locking portion 56b at the tip of the shutter closing spring 56 is moved from the opening 54 to the cartridge insertion portion. 58 protrudes. In this case, the stopper 57 at the rear end of the shutter opener 49 comes into contact with a stopper 60 provided on the suspension chassis 2 and the shutter opener 4
9 does not move backward.

The shutter unlocking claw 55 of the shutter opener 49 pushes and retracts the shutter locking member of the cartridge 100 to lock the locking claw 107 of the slide shutter 104 to the shutter locking member. To release. At this time, the shutter closing spring 5
The locking portion 56b at the tip of the slide shutter 1
04 is locked in the shutter opening / closing hole 108. For this reason, the slide shutter 104 is released as the cartridge 100 moves rearward (FIG. 6 (2)).
(3)).

(Unlocking Operation of Suspension Chassis 2) The holder 43 moves rearward due to the rearward movement of the loader 68. The movement of the holder 43 causes the holder 43 to move as shown in FIGS. 7 (1), (2) and 8 ( As shown in (1) and (2), the engagement piece 74a of the lock pin engagement portion 74 of the loader 68 is connected to the lever 19 of the mechanical lock mechanism A.
7 (3), 8 (a) and 8 (b), the lever 19 is engaged with the operation pin 25 of FIG.
In (4), the lock members 8 and 9 are rotated clockwise to draw the front and rear lock members 8 and 9 inward. For this reason, FIG.
As shown in the figure, the lock pin 30 on the front side of the suspension chassis 2 is removed from the lock portion 10 at the front end of the lock member 8, and the lock on the rear side of the suspension chassis 2 is locked from the lock portion 11 at the front end of the rear lock member 9. The pin 31 is removed, and the suspension chassis 2 is unlocked. Thus, the suspension chassis 2 is supported by the springs 28 at the four corners.

(Automatic Retraction Operation of Cartridge 100) Further, the holder 43 is moved rearward, and the holder pins 42, 45a, 45b are guided by the left and right holder guide portions 34, 35 of the suspension chassis 2. The descending holes 3 of these holder guide portions 34, 35
7, 39, 40, the cartridge 10
The hub of the turntable fits into a center (not shown) looking through an opening at the center of the lower surface of the turntable. At this time, the holder pins 42, 45a, 45b are disengaged from the holder pin engaging portions 72, 73, but the engaging piece portions 72a, 73
a does not come off the holder pins 42, 45a, 45b.

In this state, power is supplied (switched on) to the control circuit (not shown) of the drive motor of the turntable, and the control circuit (not shown) of the drive motor of the optical pickup is turned on. When the power is turned on (switched on), the information recording disk 102 is rotated, and the optical pickup is moved left and right (in the radial direction of the disk) by the screw feed mechanism to perform reproduction or writing.

Next, when reproduction or writing is completed,
The reverse movement of the loader 68 causes the cartridge 100
And the locking operation of the suspension chassis 2 is performed.

(Reverse movement operation of the loader 68) The reverse rotation of the drive motor causes the gear 96 to rotate in the reverse direction via the pinion and the drive gear train.
Then, the first rack member 85 meshing with the first rack member 85 moves forward, and the loader 68 moves forward via the guide pins 91 and 92. When the gear 96 reaches the rear side of the rack teeth portion 85a of the first rack member 85, the gear 96 moves to the second rack member 8
The second rack member 86 is engaged only with the rack tooth portion 86a of No. 6 and the second rack member 86 is moved forward. Guide pins 91 and 92 are pushed by the rear ends of the guide holes 88 and 89 formed in the second rack member 86, and the loader 89 moves forward.

(Ejecting Operation of Cartridge 100) By the forward movement of the loader 68, the engaging pieces 72a, 73a of the front and rear holder pin engaging portions 72, 73 provided on the loader 68 are moved to the holder pins 45a, 45b, 4
By pushing 2 forward, the holder 43 moves forward, and the cartridge 100 moves forward. The holder 43 moves forward and the holder pins 42, 45
a, 45b are guided by the left and right holder guide portions 34, 35 of the suspension
Pulled back from 7, 39, 40 to straight holes 36, 38,
The center of the cartridge 100 is separated from the turntable, moved forward by being guided by the left and right holder guides 34 and 35, and discharged from the cartridge insertion portion 99 of the holder 43 to the cartridge entrance 98 side.

(Closing operation of the slide shutter 104 in the cartridge 100) When the cartridge 100 is ejected, the locking portion 56b at the tip of the shutter closing spring 56 is locked in the shutter opening / closing hole 108. The slide shutter 104 is closed by moving the holder 43 forward. Then, the shutter lock release claw 55 of the shutter opener 49 is disengaged from the shutter lock member of the cartridge 100 and protrudes therefrom.
07 is locked by the shutter locking member. Further, the locking portion 56b at the tip of the shutter closing spring 56 comes off the shutter opening / closing hole 108.

(Locking Operation of Suspension Chassis 2) When the cartridge 100 is ejected, the loader 6
8, the lock pin engaging portion 74 of the loader 68 pushes the operating pin 25 of the lever 19 forward, and pushes down the operating pin 25, whereby the lever 19 is moved as shown in FIG. , (4), (3), (2),
Rotate counterclockwise in the order of (1) to push the front and rear lock members 8 and 9 outward. For this purpose, the front lock part 10 of the front lock member 8 fixes the front lock pin 30 of the suspension chassis 2, and the front lock part 11 of the rear lock member 9 is connected to the rear side of the suspension chassis 2. Is fixed.

According to the above-described embodiment, the gear 96 rotates through the drive gear train, and the gear 96
The second rack member 86 meshing at 6a moves rearward,
Guide holes 88 formed in the second rack member 86,
The guide pins 91 and 92 are pushed by the ends of the 89, and the loader 68 moves rearward. In this case, the first rack member 85 moves rearward with the movement of the loader 68 (see FIGS. 10A and 10B).

When the gear 96 reaches the end of the rack teeth 86 a of the second rack member 86, the gear 96 meshes with the rack teeth 85 a of the first rack member 85. When the gear 96 leaves the rack teeth portion 86a of the second rack member 86a, the gear 96 meshes only with the rack teeth portion 85a of the first rack member 85, and moves the first rack member 85 backward. This movement causes the loader 68 to move rearward via the guide pins 91 and 92 (FIGS. 10 (2) and 10 (3)).
reference).

As described above, the rotation of the gear 96 causes the second rack member 86 to be sent and the loader 68 to move. Thereafter, the second rack member 86 is not sent and the first rack member 86 is moved.
Is moved and the loader 68 moves, and when the loader 68 is moved by the distance L,
The required space can be reduced by the length C of the second rack member 86 as compared with the distance D when the loader is sent by a single rack member (see FIG. 10C).

The first and second rack members 85, 86
Are connected by a spring 95, and when the gear 96 is engaged with the second rack member 86 and an external force acts on the first rack member 85, that is, the loader 68, the first rack member 85 Since only the rack member 85 moves to extend the spring 95, no external force is transmitted to the drive gear train via the gear 96, so that damage to the gear 96 and the like can be prevented.

[0052]

As described above, according to the present invention, the first rack member and the second rack member are provided on the fixed chassis so as to be movable in the moving direction of the loader, and the first rack member is guided by the first rack member. A pin is provided, a guide hole is formed in the second rack member, the guide pin is passed through the guide hole, and an end of the guide pin is connected to the loader. And a gear is meshed with the rack teeth of the second rack member, and this gear is linked to the drive gear train. Rotates, the second rack member meshing with this gear at the rack teeth moves in one direction of the loader movement direction, and the guide pin is pushed by the end of the guide hole formed in the second rack member. Loader is loader To move to one of the moving direction. In this case, along with the movement of the loader, the first rack member moves in one of the loader moving directions.

When the gear reaches the end of the rack teeth of the second rack member, the gear meshes with the rack teeth of the first rack member. When the gear leaves the rack teeth of the second rack member, it meshes only with the rack teeth of the first rack member, and moves the first rack member in one of the loader moving directions. This movement causes the loader to move in one of the loader movement directions via the guide pins.

As described above, the second rack member is sent by the rotation drive of the gear to move the loader, and thereafter, the first rack member is sent without sending the second rack member. Since the loader moves, the required space can be reduced as compared with a case where the loader is sent by a single rack member.

Further, since the first and second rack members are connected by a spring, an external force acts on the first rack member, that is, the loader in a state where the gear is engaged with the second rack member. In this case, since the first rack member simply moves to extend the spring, no external force is transmitted to the drive gear train via the gear, so that damage to the gear and the like can be prevented.

[Brief description of the drawings]

FIG. 1 is a perspective view of a disk device according to the present invention, with a part thereof omitted;

FIG. 2 is a perspective view of the disk device in a state where a part of an upper chassis is removed.

FIG. 3 is an exploded perspective view of the disk device.

FIG. 4 is a perspective view of a cartridge ejection state of the disk device. FIG. 4 is a perspective view of a cartridge loading state of the disk device. FIG.

FIG. 5 is an exploded perspective view of a holder in the disk device.

6A is a plan view of the holder with the cartridge slide shutter open, FIG. 6B is a plan view of the holder with the cartridge slide shutter half open, and FIG. (4) is an arrow view from the X direction of (1).

FIG. 7 (1) is a right side view of a disk device according to the present invention, with a part thereof omitted. FIGS.

8 (1) to 8 (5) are explanatory diagrams of each operation of unlocking the mechanical lock mechanism.

9 (1) is a side view of the loader moving mechanism of the disk device according to the present invention, in which a part of the loader moving mechanism is partially omitted. FIG.

FIGS. 10 (1) to (3) are explanatory diagrams of the operation principle of first and second rack members in the loader moving mechanism.

FIG. 11 is a perspective view of a cartridge.

FIGS. 12 (1) to (3) are explanatory diagrams of the operation of a conventional loader moving mechanism of a disk device.

[Explanation of symbols]

 1 Main Chassis 2 Suspension Chassis 3 Upper Chassis (Fixed Chassis) 85 First Rack Member 86 Second Rack Member 88, 89 Guide Hole 91, 92 Guide Pin 93, 94 Spring Locking Portion 95 Spring 96 Gear

──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor, etc. Watanabe, etc. 4-3-1 Tsunashima Higashi, Kohoku-ku, Yokohama-shi, Kanagawa Prefecture Inside Matsushita Communication Industrial Co., Ltd. No.3-1, Matsushita Communication Industrial Co., Ltd. (58) Field surveyed (Int.Cl. ⁶ , DB name) G11B 17/04

Claims (1)

(57) [Claims] A first rack member and a second rack member are provided on a fixed chassis so as to be movable in a moving direction of a loader, and a guide pin is provided on the first rack member.
A guide hole is formed in the second rack member, the guide pin is passed through the guide hole, an end of the guide pin is connected to the loader, and a spring engagement portion is provided on each of the first and second rack members. And a spring is spanned between these spring engagement portions, and a second rack member provided on the second rack member is provided.
A gear that meshes with the first rack tooth portion, and rotates the gear;
Causes the second rack member to move, and the gear to move
When reaching the end of the second rack member, the gear shifts to the first rack member.
Meshes with the second rack teeth provided on the rack member
Disk and wherein the.