JP2910533B2 - 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It can be withdrawn.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.

[0004]

However, in the above-mentioned conventional disk drive, it is necessary to drop the right and left holder pins of the holder for loading the cartridge into the descending holes of the holder guide during the automatic retraction operation of the cartridge. A leaf spring is used as a holder holding member to be used, and this leaf spring is arranged along the holder guide.

Therefore, even during the horizontal transfer of the cartridge, the holder pin slides on the leaf spring to generate frictional resistance, which becomes a load and exerts an excessive force on the motor and the like.
Problems have occurred in durability and the like.

The present invention has been made in view of the above-mentioned problems, and the object thereof is that a frictional resistance is generated when a holder pin slides on the leaf spring as in the conventional case. It is an object of the present invention to provide a disk device that does not have the above and improves the durability of a motor or the like.

[0007]

In order to achieve the above object, the present invention provides a movable chassis in which a left and right holder pins of a holder for loading a cartridge are guided in a loading direction and a linear guide hole is provided. A holder guide portion having a lowering hole, and a holder holding member is rotatably mounted on the movable chassis by being positioned near the lowering hole of the holder guide portion; Along with biasing with a return spring in the direction along, the holder holding member abuts against a stopper formed on the movable side chassis,
The tip of the holder holding member is arranged along the intersection of the guide hole and the descending hole.

[0008]

With such a construction, when the cartridge is automatically retracted, the holder pin moves through the guide hole and hits the front end of the holder pressing member, and the holder pressing member is rotated against the return spring, whereby the holder pin is rotated. The holder presses the holder pin into the descending hole, and the holder presses the holder pin to fix the holder to the movable chassis.When the cartridge is ejected, the holder moves and the holder pin moves the holder presser to the return spring. After the holder has been rotated to release the fixation of the holder to the movable chassis, the holder is pulled back from the descending hole to the guide hole.

[0009]

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. Note that in FIG. 1, the Y direction is the rear, and the Z direction is the front.

As shown in FIGS. 1 to 3, a disk drive according to the present invention comprises a main chassis 1 which is a fixed chassis,
A suspension chassis 2 that is a movable chassis and an upper chassis 3 that is a fixed chassis are provided. 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. Left and right side 1 of main chassis 1
b, 1c and a rear side portion 1d are provided with a damper mounting portion 5, and portions of the left and right side portions 1b, 1c and the rear surface portion 1d of the main chassis 1 facing the damper mounting portion 5 are cutout portions. 26a. A notch 26 is formed at the rear of the left and right portions 1b and 1c 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 sides 1b and 1c of the main chassis 1.
This mechanical lock mechanism A has front and rear lock members 8 and 9 as shown in FIG. 4, and lock portions 10 and 11 are formed at the front ends of these lock members 8 and 9, respectively.
A long hole 18 which is long in the vertical direction is formed in the lock member 9 on the rear side.

The front and rear locking members 8 and 9 are attached to horizontal guide holes 14 and 15 formed in the right side portion 1c 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 1c 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 (not shown) positioned at the center thereof, and the suspension chassis 2 has a punching portion (FIG. 4) positioned to the right of the turntable. (Not shown)
Further, optical pickups (not shown) are provided in the punching portions, respectively, and the optical pickups are moved in the left-right direction (radial direction of the disk) by a screw feed mechanism (not shown). On the back side of the suspension chassis 2, a mechanism such as a drive motor of a turntable is provided.

The left and right side surfaces 2a and 2b of the suspension chassis 2 are provided with holder guide portions 34 and 35 as shown in FIGS. 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. And a descending hole 40 toward it. 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.

Further, inside the left and right side portions 2a and 2b of the suspension chassis 2, a holder holding member 140 is positioned near the descending hole 37 and the descending hole 39.
Is arranged. That is, as shown in FIGS. 6 and 7, the holder pressing member 140 has a sloped edge 141 at its tip.
A downwardly extending leg 142 is formed at an intermediate portion thereof, and the front end of the leg 142 has a spring locking portion 1.
43 are formed. Then, the holder holding member 140
The left and right side portions 2a are supported by a support shaft 144 at an intermediate portion thereof.
2b so as to be rotatable in the vertical direction.
c and the spring locking portion 147 provided on the
45 and the return spring 145
Of the leg 1 of the holder holding member 140 by the urging force of
The holder holding member 140 contacts the stoppers 146 formed inside the left and right side surfaces 2a and 2b.
Is held horizontally, and the tip of the holder holding member 140 is located along the intersection of the guide holes 36 and 38 with the descending holes 37 and 39.

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, as shown in FIGS. 8, 9, and 10, a holding portion 44 having an inverted U-shaped cross section is formed on the left side of the holder 43, and an end surface of the holding portion 44 is a left side surface portion 44a. The right side of 43 is bent at a right angle to form a right side surface 44b. One holder pin 42 is provided in front of the left side 44a of the holder 43, and two holder pins 4 are provided in the right side 44b.
5a and 45b are attached to the front and rear, respectively. Also,
As shown in FIG. 8, a cartridge gripping hook 46 is mounted on the left and right sides of the rear side of the holder 43 so as to be swingable in the left and right directions by a pin 47. Holder 4
3 is biased toward the center. A cartridge receiving portion 63 is formed on the left and right sides of the surface of the holder 43.

The holder 3 is provided with a cartridge detecting lever 111 which is a cartridge detecting member constituting a part of the cartridge detecting mechanism 110.
This cartridge detection lever 111 is provided in FIGS.
As shown in FIG. 3, the lever body 112 has a substantially L-shaped lever body 112.
a pin 114 is attached to one end of the lever main body 112, and a cam operating pin 115, which is a cam operating part projecting in the opposite direction to the pin 114, is provided at the other end of the lever main body 112. The lever body 112 is provided with a spring engaging portion 116 at the other end thereof.

A support hole 117 is provided in the surface of the holder 3.
An arc-shaped hole 118 centered on the bearing hole 117;
Left and right square holes 119, 1 located behind the bearing holes 117
20 is formed, and a spring engaging portion 121 is formed at the edge of the right square hole 120. The cartridge detection lever 111 is rotatably supported on the support hole 117 by a support shaft 113, and the pin 115 is connected to the arc-shaped hole 1.
18 and disposed on the surface of the suspension chassis 2. The spring engagement portion 116 at the other end of the lever body 112 is inserted into the left square hole 119,
A spring 122 extends between the spring locking portion 116 and the spring locking portion 121, and the spring 1
The cartridge detection lever 111 rotates clockwise by the urging force of the pin 22 so that the pin 115 is
18 is in contact with the front end portion 118a.

A shutter opener 49 is attached to the right side of the holder 43 so as to be movable in the front-rear direction. That is, the shutter opener 49 is configured as shown in FIG.
As shown in FIGS. 4 to 17, the holder 43 has an upper surface portion 49a and an outer surface portion 49b which are in sliding contact with the right side portion of the holder 43.
A holding pin 51 also serving as a shutter closing spring release pin is provided before and after the right side of the holder 43.
a and 51b are inserted into the slide hole 50, and the holding pins 51a and 51b are
9 is held.

An inner surface portion 52 and a horizontal surface portion 53 are formed inside the front portion of the shutter opener 49. An opening portion 54 is formed in the inner surface portion 52, and the inner surface portion 52 and the horizontal surface portion 53 are formed. The front end is open to the outside, and the inner surface portion 52 of the shutter opener 49, the horizontal surface portion 53, and the holding portion 44 on the left side of the holder 43 constitute a cartridge insertion portion 58.
An opening / closing door 59 is provided at 8 so that it can be opened and closed.

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 pin 2 of the suspension chassis 2 with the guide pin 42 on the left side thereof.
(a) movably inserted into the guide hole (36) of the holder guide part (34), and the right front guide pin (45a) is movably inserted into the guide hole (38) of the holder guide part (35) of the right side part (2b) of the suspension chassis (2). At the same time, the right rear guide pin 45b is connected to the holder guide 35 of the right side 2b of the suspension chassis 2.
And is attached to the suspension chassis 2.

On the left side of the back surface of the upper chassis 3, a loader guide 6 is provided in the front-rear direction as shown in FIG.
The loader guide 65 has a guide hole 66 formed 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 is provided with a hole 69, and left and right sides of the surface 68a are provided with left and right side portions 70 and 71 bent at right angles to the surface 68a.
Holder pin engaging portions 72 and 73 are formed at the front and rear, and a lock pin engaging portion 74 as a pin operating means is formed at an intermediate portion. The holder pin engaging portions 72, 73 have engaging pieces 72a, 73a protruding forward. 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.

The lock pin engaging portion 74 includes an engaging piece 74a projecting rearward and obliquely downward from the lower edge of the side portion 71, and a pin extending upward from the lower edge of the side portion 71. And an insertion recess 74b.

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 includes a first rack member 85 and a second rack member 86 along the loader guide 65, as shown in FIGS. A first rack member 85 is slidably overlapped at an end portion, and front and rear guide holes 88 and 8 are formed in a rising wall portion 87 of a second rack member 86.
9 are formed. 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 has a gear train (not shown). ) Is linked to the gear 96.

A long hole 123 extending in the front-rear direction is formed on the surface of the upper chassis 3, and a switch driving lever, which is a substantially rectangular switch driving member, is formed on the back of the upper chassis 3. The switch drive lever 124 has a cam portion 126 protruding leftward (rightward in FIG. 21) formed at the rear end of the switch drive lever 124. I have. A spring locking portion 127 is formed on the left end of the switch drive lever 124, and a spring locking portion 128 is formed on the front left side of the rear surface of the upper chassis 3. A return spring 129 extends between the stop portions 127 and 128, and the switch drive lever 124 is urged in a counterclockwise direction (clockwise direction in FIG. 12) by the return spring 129. The left portion 124a of the switch drive lever 124 contacts the stopper 130, and the cam portion 126 at the rear end of the switch drive lever 124 protrudes into the long hole 123.

A switch 131 is mounted on the front left side of the rear surface of the upper chassis 3. When the switch driving lever 124 rotates against the return spring 129, the switch 131 is turned on. The drive lever 124 is turned on by a left portion 124a, and the loading operation is stopped by turning on the switch 131.

The upper chassis 3 constructed as described above is overlapped with the main chassis 1 and is 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 related art described above) is inserted, the suspension chassis 2 is locked to the main chassis 1 by the left and right mechanical lock mechanisms A. That is, as shown in FIG. 4 and FIG. 22 (1), when the lock member 8 on the front side of the mechanical lock mechanism A is moved forward,
The lock member 10 at the front end of the lock member 8 grips the lock pin 30 on the front side of the suspension chassis 2, and the lock member 9 on the rear side is moved rearward.
Of the suspension chassis 2 grips the lock pin 31 on the rear side of the suspension chassis 2.

The cartridge detection lever 11
The first cam operation pin 115 is provided in the hole 69 of the loader 68.
And inserted into the elongated hole 123.

Next, the operation of the disk device configured as described above will be described. When the holder 43 is located on the cartridge entrance 98 side as shown in FIG. 23 (3), the holding pin 51a of the holder 43 is located forward and interferes with the intermediate portion of the shutter closing spring 56. ,
The locking portion 56 b at the tip of the shutter closing spring 56 is 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 portion 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 via a pinion and a 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. When the gear 96 reaches the front of the rack teeth 86a of the second rack member 86, the gear 96 meshes with the rear part of the rack teeth 85a of the first rack member 85. Then, the gear 96 is connected to the second rack member 86.
Of the first rack member 85
And the first rack member 85 is moved rearward. 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 and 73 provided on the right side of the loader 68 are slidably engaged with the holder pins 45a and 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 lock release claw 55 of the shutter opener 49 pushes the shutter lock member of the cartridge 100 and retracts the same, thereby locking the lock claw 107 of the slide shutter 104 to the shutter lock 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 backward (FIG. 23 (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. 22 (1), (2) and (3). , (4) and (5), the engaging piece 74a of the lock pin engaging portion 74 of the loader 68 is connected to the lever 1 of the mechanical lock mechanism A.
9 by engaging the operating pin 25 and guiding the operating pin 25 upward in the pin insertion recess 74b, the lever 19 rotates clockwise in FIG. , 9 are drawn inward. Therefore, 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 portion 11 at the front end of the lock member 9 on the rear side is locked from the lock on the rear side of the suspension chassis 2. The pin 31 is removed, and the suspension chassis 2 is unlocked. To this end, the suspension chassis 2 has springs 2 at its four corners.
8 will be supported.

(Automatic Retraction Operation of Cartridge 100) Further, the holder 43 moves 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 are drawn. In this case, the holder pins 42 and 45a hit the inclined edge 141 of the holder holding member 140, and rotate the holder holding member 140 against the return spring 145 to enter the descending holes 37 and 39. Therefore, the hub of the turntable 32 fits into a center (not shown) looking through an opening at the center of the lower surface of the cartridge 100. At this time, the holder pins 42, 45a and 45b are disengaged from the holder pin engaging portions 72 and 73,
a, 73a do not come off the holder pins 42, 45a, 45b.

In this state, power is supplied (switched on) to a control circuit (not shown) for the drive motor of the turntable 32, and a control circuit (not shown) for the drive motor of the optical pickup is provided. Is turned on, the information recording disk 102 rotates, and
The optical pickup is moved in the left-right direction (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 gear train, and the first rack member 85 meshing with the gear 96 at the rack teeth 85a. Moving forward, the loader 68 moves forward via the guide pins 91 and 92.
The gear 96 is provided on the rack teeth 85 of the first rack member 85.
When the gear 96 reaches the rear side, the gear 96 meshes only with the rack teeth 86a of the second rack member 86, and moves the second rack member 86 forward. This second rack member 86
The guide pins 91 and 92 are pushed by the rear end portions of the guide holes 88 and 89 formed in the above, and the loader 89 moves forward.

(Ejecting Operation of Cartridge 100) By the forward movement of the loader 68, the engaging pieces 72a and 73a of the front and rear holder pin engaging portions 72 and 73 provided on the loader 68 become the holder pins 45a and 73a. 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
It is pulled back from 7, 39, 40 to the guide holes 36, 38. In this case, the holder pins 42 and 45a rotate the holder holding member 140 against the return spring 145. Therefore, the center of the cartridge 100 is moved away from the turntable 32 and guided forward by the left and right holder guides 34 and 35, and is discharged from the cartridge insertion portion 99 of the holder 43 to the cartridge entrance 98 side. You.

(Closing Operation of the Slide Shutter 104 in the Cartridge 100) When the cartridge 100 is ejected, the locking portion 56b at the tip end 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. 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 side surface of the pin insertion recess 47b of the lock pin engaging portion 74 of the loader 68 pushes the operating pin 25 of the lever 19 forward, and the operating pin 25
By pressing down, the lever 19 is
(5), (4), (3), (2) and (1) are rotated in the counterclockwise direction 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.

(Operation of Cartridge Detection Mechanism 110) When the cartridge 100 is not inserted into the cartridge insertion portion 58 of the holder 43 from the cartridge entrance 98, the cartridge detection lever 11
1 does not operate and the cartridge detection lever 111
Is rotated clockwise by the urging force of the spring 122 to move the pin 114 to the front end 1 of the arc-shaped hole 118.
18a, and the cam operation pin 115 is
23 is located on the right side (the left side in FIG. 21).

In this state, when the cartridge 100 is inserted into the cartridge insertion portion 58 of the holder 43 from the cartridge entrance 98, the leading end of the cartridge 100 interferes with the pin 114 and returns the cartridge detection lever 111. It is turned clockwise against the spring 122. For this reason, the cam operation pin 115 moves to the left side (the right side in FIG. 21) in the long hole 123, and comes into a state where the cam portion 126 of the switch driving lever 124 is disengaged.

Therefore, even if the cartridge 100 starts loading by the holder 43, the cam operating pin 115 is
Move without interfering with the cam portion 126 of the second member. Therefore, the switch driving lever 124 does not operate, and the switch 131 does not operate, so that the loading of the cartridge 100 is continued.

However, if the cartridge 100 is pulled out halfway during the loading of the cartridge 100, the pressing of the leading end of the cartridge 100 against the pin 114 is released, so that the cartridge detection lever 111 Is return spring 1
12, the cam operation pin 115 is rotated rightward (left side in FIG. 21) in the long hole 123.
To the cam portion 1 of the switch drive lever 124.
It comes to a position where it interferes with 26.

Therefore, when the holder 43 starts feeding with the cartridge 100 inserted, the cam operating pin 115 is moved to the switch driving lever 12.
4 interfering with the cam portion 126. For this reason, the switch driving lever 124 rotates against the return spring 129, and this turns on the switch 131 to stop the movement operation of the holder 43.
It immediately returns to the state of waiting for insertion of 00.

According to the above embodiment, the cartridge 10
0, the holder pins 42, 4
5a moves through the guide holes 36 and 38 and hits the inclined edge 141 of the holder holding member 140, rotates the holder holding member 140 against the return spring 122, and enters the descending holes 37 and 39. The holder pressing member 140 presses the holder pins 42 and 45a to fix the holder 43 to the suspension chassis 2, and when the cartridge 100 is ejected, the holder 4
3 moves forward and the holder pins 42 and 45a rotate the holder holding member 140 against the return spring 122 to release the fixing of the holder 43 to the suspension chassis 2, and then the descending holes 37 and 39. From the guide holes 36 and 38.

For this reason, while the cartridge 100 is moving through the guide holes 36, 38, the holder pins 4
2, 45a does not cause frictional resistance due to sliding contact with the leaf spring as in the prior art, and improves the durability of the motor and the like.

[0058]

As described above, the present invention is directed to a holder guide which guides the left and right holder pins of a holder for loading a cartridge in a loading direction on a movable chassis and has a linear guide hole and a descending hole. Part is provided on the movable-side chassis, in the vicinity of the descending hole of the holder guide part, and a holder pressing member is rotatably mounted.The holder pressing member is returned by a return spring in a direction along the descending hole. While being urged, the holder holding member was brought into contact with a stopper formed on the movable chassis, and the front end of the holder holding member was aligned with the intersection of the guide hole and the descending hole. At the time of the automatic retraction operation, the holder pin moves through the guide hole and hits the tip of the holder holding member. The holding member is rotated against the return spring to enter the descending hole, and the holder holding member presses the holder pin to fix the holder to the movable side chassis. Is moved, the holder pin is rotated against the return spring to release the holder from being fixed to the movable chassis, and then is withdrawn from the descending hole to the guide hole.

For this reason, while the cartridge is moving in the guide hole, the holder pin does not slidably contact the leaf spring as in the related art, and frictional resistance does not occur, thereby improving the durability of the motor and the like. Can be done.

[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 the disc device in a cartridge inserted state.

FIG. 5A is a perspective view showing a state where a holder is incorporated in a suspension chassis of the disk device. FIG. 5B is a view taken in the direction of arrow F in FIG.

FIG. 6 is a side view of the holder holding member.

FIG. 7 is a view from the direction of arrow G in FIG. 6;

FIG. 8 is an exploded perspective view of a holder.

FIG. 9 is a perspective view of a holder.

FIG. 10 is a plan view from the back side of the holder.

FIG. 11 is a plan view of a cartridge detection lever.

FIG. 12 is a view from the direction of arrow H in FIG. 11;

13 is a view as seen from the direction I in FIG. 11;

FIG. 14 is a right side view of the shutter opener.

FIG. 15 is a plan view of a shutter opener.

FIG. 16 is a left side view of the shutter opener.

FIG. 17 is a rear view of the shutter opener.

FIG. 18 is a partially omitted side view of the loader moving mechanism of the disk device according to the present invention.

FIG. 19 is an explanatory view of the operation of the first and second rack members in the loader moving mechanism.

FIG. 20 is an explanatory diagram of the operation of first and second rack members in the loader moving mechanism.

FIG. 21 is an explanatory diagram of a linked state of a switch and a switch driving lever when the upper chassis is viewed from the back side.

FIGS. 22 (1) to (5) are explanatory diagrams of each operation of unlocking the mechanical lock mechanism.

23 (1) is a plan view of the same holder with the slide shutter of the cartridge opened. (2) is a plan view of the same holder with the slide shutter of the cartridge half-opened. (4) is an arrow view from the X direction of (1).

FIGS. 24 (1) to (3) are explanatory views of the operating principle of first and second rack members in the loader moving mechanism.

FIG. 25 is a perspective view of a cartridge.

[Explanation of symbols]

 1 Main Chassis (Fixed Chassis) 2 Suspension Chassis (Movable Chassis) 3 Upper Chassis (Fixed Chassis) 30, 31 Holder Pins 36, 38 Guide Holes 37, 39 Descending Holes 42, 45a Holder Pin 43 Holder 68 Loader 100 Cartridge (Disc cartridge) 122 Return spring 140 Holder holding member 141 Inclined edge

Claims (1)

(57) [Claims] 1. A movable-side chassis is provided with a holder guide portion for guiding left and right holder pins of a holder for loading a cartridge in a loading direction and having a linear guide hole and a descending hole.
Positioning the holder pressing member in the vicinity of the descending hole of the holder guide portion, rotatably mounting the holder pressing member, urging the holder pressing member with a return spring in a direction along the descending hole, and pressing the holder pressing member. A tip portion of the holder pressing member is made to contact a stopper formed on the movable chassis so as to extend along an intersection of the guide hole and the descending hole.