JPH07320363A - Disc apparatus - Google Patents

Abstract

PURPOSE:To obtain a disc apparatus which eliminates the fluctuation of a load while a cartridge is loaded or ejected and can stably load or eject the cartridge. CONSTITUTION:One side ends of two cross-links 24 and 25 which are linked swingably with a support pin 29 at an intermediate crossing part, are slidably retained to the loader side guide holes 22 and 23, and the other side ends of the cross-links 24 and 25 are retained to third and fourth guide holes 13 and 14 which are the chassis side guide holes of a fixed side chassis 1. The support pin 29 is slidably retained to the guide hole 17 of the fixed side chassis 1.

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 mini disk cartridge of a magneto-optical recording system.

[0002]

2. Description of the Related Art In recent years, a disk cartridge has been proposed in which an information recording disk is housed in a protective cartridge case. As an example of this kind of cartridge,
There is a magneto-optical recording type mini disk cartridge, and this disk cartridge (hereinafter referred to as the cartridge)
Reference numeral 300 denotes an information recording disk 302 housed in a cartridge case 301 as shown in FIGS.
And a disk access hole 303 provided on one or two sides of the cartridge case 301, and a slide shutter 304 for opening and closing the disk access hole 303. Cartridge holding recesses 305 are formed on the left and right front sides of the back surface of the cartridge case 301, and groove portions 306 along the front-rear direction are formed on the left and right end surface portions of the cartridge case 301, and the left groove portion 306 is formed.
A shutter locking member (not shown) is provided in the middle of this, and this shutter locking member is biased toward the groove portion 306 by a spring (not shown) so that it can be retracted. The locking claw portion 307 of the slide shutter 304 is locked to the shutter locking member. A shutter opening / closing hole 308 is formed in the right end surface of the slide shutter 304.

A disc device is a device for recording / reproducing information on the cartridge 300.

In this disk device, a cross link mechanism is provided to stabilize the operation of the loader when loading or ejecting the cartridge. This cross-link mechanism includes two cross-links that are swingably connected to each other at an intermediate intersection, and either one of the left and right ends of the cross-link is connected to the stationary chassis and the loader as a fulcrum. Was there.

[0005]

However, in the above-mentioned conventional disk device, since the fulcrum of the cross link exists on either the left or the right, the operation becomes unstable when the stroke in the loader moving direction is increased. And again, 2
Since the intersection of the middle part of the two crosslinks moves laterally with respect to the operating direction, the load at the motor drive point increases or decreases, resulting in instability (changing speed or stopping). there were.

The present invention has been made in view of the above problems, and an object thereof is to achieve stable operation without increasing or decreasing the load during operation when the cartridge is loaded or ejected. It is to provide a disk device that can be used.

[0007]

In order to achieve the above object, the present invention is directed to a stationary chassis and a movable chassis having a turntable and a pickup head mounted on the stationary chassis via an elastic body. A chassis, a mechanical lock mechanism provided on the fixed side chassis to detachably hold the lock pin of the movable side chassis to fix the movable side chassis to the fixed side chassis, and a disk cartridge provided on the movable side chassis. A holder for holding and holding the disk cartridge for loading and unloading the disk cartridge, a loader provided on the stationary chassis for carrying the holder in a predetermined carrying direction, and a loader provided on the loader for loading the disk cartridge. At the end, the mechanical lock mechanism interferes with A lock mechanism for releasing the lock of the lock pin by the lock mechanism and for interlocking with the mechanical lock mechanism to lock the lock pin by the mechanical lock mechanism at the initial stage of the ejecting operation of the disc cartridge, the fixed-side chassis A guide hole along the loader's movement direction is provided on the surface portion of the loader, and one end portion of two cross links swingably connected by a spindle pin at the intersection of the intermediate portion slides on the loader side guide hole of the loader. Slidably engage the other end of the cross link with the chassis side guide hole of the fixed side chassis so that the spindle pin can slide into the guide hole of the fixed side chassis. It is characterized by being engaged.

[0008]

With this structure, the cross link slides at each end thereof, and at the intersection of the intermediate portions, the spindle pin connecting the intersection slides in the guide hole of the stationary chassis. Moreover, the intersection of the middle parts of the two cross links is prevented from moving laterally with respect to the operating direction of the loader. Therefore, the load at the motor driving point becomes stable, the speed changes or the problem of stopping is eliminated, and stable operation becomes possible.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. 1 is a perspective view of the disk device according to the present invention with a part thereof omitted, FIG. 2 is a perspective view of the disk device with a front cover disassembled, and FIG. 3 is an exploded perspective view of the disk device. In the drawings, the Y direction is the front,
The Z direction is backward.

As shown in FIG. 3, the disk device of the present invention comprises a stationary chassis 1 and a suspension chassis 2 which is a movable chassis, and the stationary chassis 1 has an upper chassis 4. Side chassis 5 and 6 are fixed to the left and right of the upper chassis 4.
That is, the upper chassis 4 is configured by integrally forming the surface portion 4A, the front surface portion 4B, and the rear surface portion 4C from the sheet metal, and the lower edge portion 4a of the left end portion of each of the front surface portion 4B and the rear surface portion 4C is formed. As shown in FIG. 5, a bent locking piece 3A is formed by cutting and raising, and the bent concave piece 3A and the lower edge portion 4a form a locking concave portion 3.

Mounting parts 5A are formed on the left and right of the upper edge of the left side chassis 5, and locking hooks 5B are formed on the left and right ends of the lower edge of the side chassis 5. is there. The locking hook 5B is locked in the locking recess 3 to link the side chassis 5 to the upper chassis 4, and the side chassis 5 is fixed to the upper chassis 4 with a screw at the mounting portion 5A. In this way, by locking the locking hook 5B in the locking recess 3, it is possible to restrict the lateral expansion of the side chassis 5 and 6.

The fixed-side chassis 1 constructed as described above
A cartridge insertion opening 8 is formed in the front surface portion 4B of the above, and a damper mounting portion 9 is formed in the lower portion of each of the front surface portion 4B and the rear side portion 4C thereof. On the right side of the rear surface portion 4C, a motor mounting portion 10 including a cutout portion is formed.

Further, in the surface portion 4A of the upper chassis 4 of the fixed side chassis 1, there are first and second elongated holes extending in the front-rear direction.
The second guide holes 11 and 12 are left and right, and the third and fourth guide holes 13 and 14 as chassis-side guide holes which are long holes extending in the left-right direction are rear portions, which are long holes extending in the front-rear direction. The fifth, sixth, and seventh guide holes 15, 16, and 17 are located in the middle part, and the second guide hole 12 is located in the front part along with the eighth guide hole 18, which is a long hole extending in the right-and-left direction at a substantially right angle. Each is formed. The right part of the eighth guide hole 18 is inclined rearward. In addition, the surface portion 4A of the upper chassis 4
On the left side of the first opening 19 which is long in the front-back direction,
Second openings 20 each having a substantially triangular shape are formed on the right side of the surface portion.

On the inner surface side of the upper chassis 4, a first loader 21 is provided with guide pins 22 provided on the left and right sides thereof.
a and 23a are slidably inserted into the first and second guide holes 11 and 12 so as to be movable in the front-rear direction. Loader-side guide holes 22 and 23, which are long holes extending in the left-right direction, are formed on the left and right sides of the rear portion of the first loader 21.
A left holder pin engaging portion 50L protruding downward is formed at the left end of the first loader 21, and an engaging recess 51L is formed in the left holder pin engaging portion 50L. In addition, this left holder pin locking portion 50L
An unlocking actuating portion 211 and a cam portion 212 having an inclined portion 212a are formed in the rear portion, and these constitute the left pin actuating means (see FIG. 4 (2)).

Further, a rack portion 52 projecting downward is formed at the right end portion of the first loader 21, and a rack 53 is formed in this rack portion 52. Further, the rack portion 52 is provided with a movable rack body 54 having a rack 54a. That is, the movable rack 54 is formed with a guide hole 55 that is long in the front-rear direction, and the rack portion 5
2, guide pins 56 and 57 are attached to the front and rear, and these guide pins 56 and 57 are attached to the guide holes 55.
These guide pins 5 are slidably inserted in the
The movable rack body 54 is held by 6 and 57 so as to be movable in the front-rear direction. A spring locking portion 58 is formed at the front end of the movable rack body 54, and this spring locking portion 5
8 and a tip of the guide pin 56, a spring 59 is hung on the movable rack 54. The movable rack 54 is urged rearward by the spring 59 so that the guide pin 56 comes into contact with the front end of the guide hole 55. Is integrated with the rack portion 52.

A second loader 21a is fixed to the right side portion of the lower surface of the first loader 21, and these constitute a loader G. The right end portion of the second loader 21a is formed with a right holder pin locking portion 50R protruding downward, a cam portion 201 having an inclined portion 201a, and an unlocking operation portion 200. This holder pin locking part 5
A locking recess 51R is formed at 0R. A guide portion 203 for guiding a rear pin 199 of a holder 143 described later is formed at the left end portion of the second loader 21a,
These constitute the right pin actuation means (Fig. 4 (1)).
reference).

Guide pins 26 and 27 provided at the front ends of the cross links 24 and 25 are slidably inserted into the loader side guide holes 22 and 23, respectively.
Nos. 4, 25 intersect at an intermediate portion thereof, and a spindle pin 29 is provided at this intersection, and the spindle pin 29 is the seventh pin.
It is slidably inserted in the guide hole 17 of. The guide pin 30 provided at the rear end of the cross link 24 is slidably inserted into the fourth guide hole 14, and the guide pin 31 provided at the rear end of the cross link 25 is the third guide hole. It is slidably inserted in the guide hole 13 of.

A cartridge double insertion preventing mechanism A is provided on the inner surface side of the upper chassis 4. The cartridge double insertion preventing mechanism A includes a first connecting bar 32, a second connecting bar 33, and a protector 34,
A guide hole 35 that is long in the front-rear direction is formed in the first connecting bar 32, and a cam portion 36 meandering to the right is formed at the rear portion of the guide hole 35. Further, a guide hole 37 that is long in the left-right direction is formed in the first connecting bar 32. Also,
The second connecting bar 33 has a substantially right-angled shape, and a spring engaging portion 38 is formed at the bent portion. Further, the protector 34 has a substantially L-shaped protector body 34a, and a piece 34b is provided at a rear portion of the protector body 34a.
Is formed, and a guide hole 39 that is long in the front-rear direction is formed in this piece portion 34b, and a double insertion prevention pin 4 which is a double insertion prevention member 4 is formed at the front end portion of the protector body 34a.
0 is stuck.

Guide pins 41 and 42 are attached to the front and rear of the first connecting bar 32. The front guide pin 41 is inserted in the fifth guide hole 15 and the rear guide pin 4 is inserted.
2 are slidably inserted in the sixth guide holes 16, respectively. A guide pin 26a fixed to the loader G is slidably inserted into the guide hole 35 of the first connecting bar 32.

The second connecting bar 33 is rotatably attached to the upper chassis 4 by a support shaft pin 43 at its bent portion, and a guide pin 44 is attached to the left end of the second connecting bar 33. The guide pin 44 is slidably inserted into the guide hole 37 of the first connecting bar 32. Further, guide pins 45 and 46 are attached to the left and right of the protector body 34a of the protector 34, and these guide pins 45 and 46 are slidably inserted into the eighth guide hole 18. A guide pin 47 is attached to the right end portion of the second connecting bar 33, and the guide pin 47 is provided in the guide hole 3 of the protector 34.
9 is slidably inserted. On the right side of the cartridge insertion opening 8, a cutout portion 8a is formed in which the double insertion prevention pin 40 appears.

The spring engaging portion 38 formed on the bent portion of the second connecting bar 33 is located inside the second opening 20, and the spring engaging portion 38 and the right edge of the second opening 20 are located. A spring 49 is hooked on a spring locking portion 48 provided on the section.

Further, the fixed side chassis 1 is provided with a mechanical lock mechanism B. This mechanical lock mechanism B includes a left mechanical lock unit 60L provided on the left side chassis 5 and a right mechanical lock unit 60R provided on the right side chassis 6, as shown in FIGS. 3 and 17 to 28. It consists of

This left side mechanical lock unit 60L
18, includes a lock operating member 61, a lock plate 62, and a lock guide 63, as shown in FIGS. 18, 19, and 22, and the lock operating member 61 has guide holes long in the front-rear direction in the front and rear thereof. 64 and 65, and also
A notch 66 is formed in the central portion, a recess 67 is formed at the rear edge of the notch 66, and a spring engaging portion 68 is formed at the lower front side thereof. Further, an interference portion 69 protruding inward is formed at the rear end portion of the lock operating member 61.

The lock guide 63 is provided with substantially circular openings 70 and 71 in front and rear thereof and guide holes 72 and 73 which are long in the front and rear direction. Further, the lock plate 62 has V-shaped lock portions 74 and 75 formed of notches at the front and rear thereof, and a vertically long guide hole 76 is formed at the rear portion of the lock plate 62. A spring locking portion 77 is provided on the lower front side of the lock plate 62.

A lock cam 78 is rotatably attached to a rear portion of the lock guide 63 by a support shaft 79. A pin 80 is attached to the inside of the lock cam 78 and a lock cam shaft 81 is attached to the outside thereof. . The lock cam shaft 81 includes a support shaft 81a and a cam follower 81b. Further, guide pins 82a and 82b are attached to the front and rear of the lock plate 62, and the guide pins 82a and 82b guide the guide hole 7 of the lock guide 63.
The lock plate 62 is slidably inserted in the second and the third 73, and the lock plate 62 is movable in the front-rear direction with respect to the lock guide 63. Then, the pin 80 of the lock cam 78 is slidably inserted in a vertically long guide hole 76 at the rear portion of the lock plate 62, and the rotation of the lock cam 78 moves the lock plate 62 in the front-rear direction.

In the lock operating member 61, guide pins 83 and 84 projecting from the side chassis 5 are inserted into the front and rear guide holes 64 and 65, and the lock operating member 61 moves in the front and rear direction of the side chassis 5. The lock cam 63 is fixedly attached to the guide pins 83 and 84 by screws, and the lock cam shaft 81 of the lock cam 78 has the cutout portion 66 of the lock operating member 61.
It is inserted in the recess 67 of the. A spring 86 is hooked on the spring engaging portion 68 of the lock operating member 61 and the spring engaging portion 77 of the lock plate 62.

The right mechanical lock unit 60R
Is a lock guide 87, as shown in FIGS.
A lock plate 88 and a lock actuating member 89 are provided. The lock guide 87 has substantially circular openings 90 and 91 in the front and rear thereof, and a guide hole 9 in the front and rear direction which is long in the front and rear direction.
7 are formed respectively, and guide shaft mounting portions 92, 93 are formed at the middle portion and the rear end portion of the upper edge portion of the lock guide 87. The guide shaft mounting portions 92, 93 are provided with guide shafts 94, 95 is attached. Also, the lock guide 87
Spring locking portions 96 and 98 are formed at the front and rear ends of the shaft.

Notches 99 and 100 are formed in the front and rear of the lock plate 88, and V-shaped lock portions 101 and 102 are formed at the rear edges of the notches 99 and 100.
Is formed, and the spring locking portion 10 is provided on the front side of the upper part thereof.
3 is formed. Further, a slit 104 and a vertically long guide hole 105 are formed at the rear end of the lock plate 88.

Guide holes 106, 107 are formed in the front-rear direction in the front and rear of the lock operating member 89, and a spring engaging portion 108 and a notch portion are formed at the lower edge of the lock operating member 89. And a cam portion 109 made up of the same, and an interference portion 110 protruding inward is formed at the rear end portion of the lock actuating member 89.

The lock guide 87 is fixed to the inside of the side chassis 6, and the guide pin 111 provided on the front portion of the lock plate 88 is attached to the lock guide 8.
7, the guide shaft 112 provided at the rear portion of the lock guide 87 is inserted into the slit 104, and the lock plate 88 moves in the front-rear direction with respect to the lock guide 87. Has been made possible.

A lock cam 113 is rotatably attached to the guide shaft 112.
A pin 114 and a lock cam shaft 115 are attached to 13. The lock cam shaft 115 is a support shaft 115.
a and a cam follower 116. The pin 114 is slidably inserted into the guide hole 105 of the lock plate 88.

The guide shafts 94 and 95 at the middle and rear ends of the upper edge of the lock guide 87 are slidably inserted into the guide holes 106 and 107 of the lock operating member 89. In addition, the lock cam shaft 11 of the lock cam 113
5 is inserted into the cam portion 109 of the lock operating member 89, and the spring 117 is hooked on the spring engaging portion 108 of the lock operating member 89 and the spring engaging portion 103 of the lock plate 88. Therefore, the cam shaft 115
Is inserted in the cam portion 201 of the second loader 21a.

A driving mechanism 120 is provided inside the fixed chassis 1. The drive mechanism 120 includes a drive motor 121 mounted on the motor mounting portion 10 as shown in FIGS. 7 and 8, and a worm 123 is fixed to the output shaft of the drive motor 121.
The worm 123 is linked to a gear train 125 via a worm wheel 124, the gear train 125 is linked to a rack gear (not shown), and the rack gear meshes with the rack 53.

A cross groove 122 as an engaging portion is formed at the tip of the worm 123, and a rotary jig W such as a screwdriver is inserted into the surface of the right side chassis 6 facing the groove 122. An insertion hole 6A is provided for this purpose.
Therefore, even in an emergency such as power-off, by inserting the rotary jig W through the insertion hole 6A, engaging the groove 122, and rotating the rotary jig W, the forced ejection of the cartridge 300 can be performed manually. Become.

Further, the fixed side chassis 1 has a structure shown in FIG.
As shown in FIGS. 29 and 30, the detection switch actuation portion 181 of the cartridge normal insertion detection mechanism F is provided. The detection switch actuation unit 181 includes a detection relay lever 182,
A detection switch lever 183 is provided, and the detection relay lever 182 is rotatably attached to the upper chassis 4 by a support shaft 184 at a front end portion thereof, and the detection relay lever 182 has an upper portion in an arcuate hole portion 182 a provided in the detection relay lever 182. A guide pin 185 on the chassis 4 side is slidably inserted.
The rear portion of the detection relay lever 182 has the opening 19
It is rushing in. Further, the detection switch lever 18
3 is rotatably attached to the upper chassis 4 by a support shaft 186 at an intermediate portion thereof, and a guide hole 187 long in the left-right direction is provided at the right end portion of the detection switch lever 183.
The guide pin 188 provided on the left side of the detection relay lever 182 is inserted into the guide hole 187. The detection relay lever 182 is biased in the counterclockwise direction by a spring (not shown), and the biasing force of this spring causes the switch actuating portion 183a at the left end of the detection switch lever 183 to move to the left side chassis 5. It is in light contact with the operator 191 of the fixed detection switch 190.

The suspension chassis 2 as the movable side chassis has spring locking pieces 127 at its four corners.
These spring locking pieces 127 and the spring locking pieces 202 of the fixed side chassis 1 (the spring locking pieces 203 of the left mechanical lock unit 60L and the spring locking pieces 96, 98 of the right mechanical lock unit 60R) are provided. ) And the male spring 128 is passed to these springs 12
The suspension chassis 2 is held by the fixed-side chassis 1 in a floating state by 8. Further, a damper 12 is provided between the suspension chassis 2 and the fixed chassis 1.
9 is installed. These dampers 129 are the fixed side chassis 1 and the right side mechanical lock unit 60R.
It is fixed to the damper mounting portion 9 of.

Further, as shown in FIGS. 31 to 33, the guide plate 1 is provided on the left and right sides of the suspension chassis 2.
The guide plates 16 and 60 are fixed to each other.
Before and after 0, 161, lock pins 130L, 131L,
130R and 131R are fixedly attached, and the left front and rear lock pins 130L and 131L are provided at the front and rear openings 7 of the lock guide 63 of the left mechanical lock unit 60L.
The right and left lock pins 130R and 131R are inserted into the front and rear openings 90 and 91 of the lock guide 87 of the right mechanical lock unit 60R. Note that this state is the unlocked state.

The suspension chassis 2 is shown in FIG.
Turntable 1 located in the center as shown in
32 is arranged, and the suspension chassis 2
Is provided with a punching section 133 located to the right of the turntable 132 and an optical pickup 139 located inside the punching section 133. The optical pickup 139 has a screw feed mechanism (not shown). ) Moves in the left-right direction (radial direction of the disk).
A mechanism such as a drive motor for the turntable 132 is provided on the back side of the suspension chassis 2.

Holder guide portions 134 and 135 are provided on the left and right guide plates 160 and 161 of the suspension chassis 2 as shown in FIG. The left holder guide part 134 includes a linear guide hole 136 formed in the left guide plate 160 from the front part to the rear part, and a downward hole 13 extending downward from the rear end part of the guide hole 136.
7, the right holder guide part 135 is a straight guide hole 138 formed in the right guide plate 161 from the front part to the rear part, and a downward hole 139 extending downward from the rear end part of the guide hole 138. It consists of and. In addition, reference pins 140 and 141 are provided on the upper surface of the suspension chassis 2 so as to be located on the front and rear of the right side.

Further, a holder pressing member 162 is attached to the rear portion of the guide plates 160 and 161 so as to be movable up and down by a support shaft 163, and the holder pressing member 162 is provided with a stopper portion 162a protruding downward. ,
The holder pressing member 162 is rotated downward by a spring (not shown),
a is a stopper 164 provided on the guide plates 160 and 161.
And the holder pressing member 162 is kept horizontal.

The suspension chassis 2 is provided with a holder 143 which is held by the holder guide portions 134 and 135 of the left and right guide plates 160 and 161 of the suspension chassis 2 so as to be movable in the front-rear direction. That is, this holder 14
As shown in FIG. 34 and FIG. 35, a left side portion of 3 is formed with a holding portion 144 having a U-shaped cross section, the end surface of the holding portion 144 is a left side surface portion 144a, and the right side portion of the holder 143 is bent at a right angle. The right side surface 144b is formed.

Then, the left side surface portion 1 of the holder 143
One holder pin 142 is attached to the front portion of 44a, and one holder pin 145 is attached to the right side surface portion 144b.

Cartridge receiving portions 164 and 165 are formed on the left and right sides of the surface of the holder 143.
As shown in FIG. 36, the cartridge gripping hooks 146L and 146R are provided on the left and right sides of the back surface of the holder 143, respectively.
The cartridge gripping hooks 146L, 146R are urged toward the center of the holder 143 by a spring 148, and the left cartridge gripping hook 146L is attached to the left holding portion 144. On the formed stopper portion 166a, the cartridge holding hook 146R on the right is attached to the cartridge receiving portion 16
5 are in contact with the stopper portions 166b formed on the base plate 5 and are in the neutral position.

The cartridge holding hooks 146L, 1
46R is made of synthetic resin, and a locking projection 167 protruding inward is formed at the tip thereof.
Is the cartridge 30 as shown in FIGS.
It is smaller than the cartridge holding recess 305 of 0. Then, the cartridge gripping hooks 146L, 1
When 46R holds the cartridge 300, the cartridge gripping hooks 146L and 146R move to the stopper portion 16
6A and 166b are not pressed against the cartridge 300, and the clearance K exists between them even when the locking projection 167 is inserted into the cartridge holding recess 305.

Further, the cartridge holding hook 146
The L and the 146R are attached to the pin 147 by fitting (patching). That is, FIG. 40 and FIG.
As shown in FIG. 1, the pin 147 has a ring-shaped groove 147a formed at its tip. Then, the cartridge gripping hooks 146L, 146R
A locking body 146B is formed on the base portion of the base member at a peripheral portion of a pin hole 146A formed on the base portion, and the locking body 146B is divided into three in the vertical direction to form three divided pieces. 146C, and a locking projection 146D that protrudes inward is formed at the tip of each of the divided piece portions 146C.

Then, the cartridge holding hook 14
When the pin 147 is inserted into the pin holes 146A of 6L and 146R, the tip of the pin 147 is divided into the divided piece portions 146.
The divided piece portion 146C is brought into contact with the locking projection 146D of C.
When the locking projection 146D faces the ring-shaped groove 147a of the pin 147, the locking projection 146D is opened.
7a, the divided piece portion 146C is closed, and fitting (patching) is performed.

A rear pin 199 is attached to the rear left side of the rear surface of the holder 43. The rear pin 199 is attached by fitting (patching) as shown in FIGS. 42 and 43. That is, as the rear pin 199, one having ring-shaped grooves 199a formed at both ends thereof is used. Then, two holding pieces 22 are formed on the surface of the holder 143 by cutting and raising.
0 is formed, a pin hole 221 and a notch 222 that communicates with the pin hole 221 are formed at the ends of the holding pieces 220, and a plurality of notches 22 are formed in the pin hole 221.
3 is formed, and the locking piece 224 is provided between the notches 223.
Is formed.

Then, the rear pin 199 is cut into the notch 22.
When it is inserted into the pin hole 221 from 2, the rear pin 199
Ring-shaped groove 199a contacts the locking piece 224, opens the locking piece 224, and the ring-shaped groove 199a of the rear pin 199 is locked in the pin hole 221 for fitting (patching). .

Also, the holding portion 144 of the holder 143.
A right insertion detecting piece portion 168 that protrudes into the holding portion 144 is formed on the left side surface portion 144a. The height of the normal insertion detection locking portion 168 is matched with the height dimension H of the groove portion 306 formed on the side surface portion from the detection curved surface portion 320 of the cartridge 300 as shown in FIGS.

Therefore, when the cartridge 300 is properly inserted, the normal insertion detecting piece 320 is inserted into the groove 306 as shown in FIG. 44, but when the cartridge 300 is incorrectly inserted, it is shown in FIG. Detection surface 320
Interferes with the normal insertion detection piece 168, and the insertion cannot be performed.

On the left side of the surface of the holder 143, there is provided a detection section 192 of the cartridge positive insertion detection mechanism F. As shown in FIGS. 32 and 33, the detection unit 192 includes a detection plate 171 and a detection lever 178. The detection plate 171 has guide holes 172 and 173 that are long in the front-rear direction and are formed in the front and rear. The detection plate 171 has a cartridge interference portion 1 protruding downward.
74 and a lever interference portion 180 are formed. And
The detection plate 171 has front and rear guide pins 17 provided in the guide holes 172 and 173 on the left side of the surface of the holder 143.
4, 175 are slidably inserted so as to be movable in the front-rear direction, and the interference portion 174 projects into the holding portion 144 from a notch portion 176 formed in the holder 143.

The detection lever 178 is rotatably attached to the surface of the holder 143 by a support shaft 179. The detection lever 178 is urged in the counterclockwise direction by a spring 178b on the back side of the holder 143. The left end portion 178a of the detection lever 178 interferes with the lever interference portion 180 of the detection plate 171. Further, the detection lever 178 has a lever shaft 1 that interferes with the detection relay lever 182 of the detection switch operating portion 181 of the cartridge forward insertion detection mechanism F provided on the fixed chassis 1.
78A is attached.

A shutter opener 149 is attached to the right side of the holder 143 constructed as described above so as to be movable in the front-rear direction. That is, as shown in FIGS. 34 and 35, the shutter opener 149 has an upper surface portion 149a and an outer side surface portion 419b that are in sliding contact with the right side portion of the holder 143, and the upper surface portion 149a is slid along the front-rear direction. A hole 150 is formed, and a holding pin 151a and a holding pin 51b, which also function as shutter closing spring release pins, are inserted into the slide hole 150 in the front and rear of the right side portion of the holder 143. These holding pins 151a, 151b holds the shutter opener 149.

An inner side surface portion 152 and a horizontal surface portion 153 are formed inside the front portion of the shutter opener 149. An opening portion 154 is formed in the inner side surface portion 152, and the inner side surface portion 152 and the horizontal surface portion 153 are formed. The front end is open to the outside, and the inner side surface portion 1 of this shutter opener 149 is
52, the horizontal plane portion 153, and the holding portion 144 on the left side of the holder 143 form a cartridge insertion portion 158.

A shutter lock release claw 155 is provided inside the middle portion of the shutter opener 149. Also, the outer side surface portion 149 of the shutter opener 149
A shutter closing spring 156 is fixed to the inner side of b at an intermediate portion, the shutter closing spring 156 is bent inward, and its tip portion is a substantially V-shaped locking portion 156a in a plan view.
Is formed, and the locking portion 156a is formed in the opening 15
4 protrudes into the cartridge insertion portion 158. A stopper 157 is formed on the outer side of the rear portion of the shutter opener 149. This stopper 157
Means to interfere with the stopper 198 provided on the guide plate 161. The holding pin 151a on the front side
Constitutes an escape mechanism E for retracting the locking portion 156b of the shutter closing spring 156 from the opening 154 to the outside of the cartridge insertion portion 158.

In the holder 143 to which the shutter opener 149 is attached as described above, the holder pin 142 on the left side is movably inserted into the guide hole 136 of the holder guide section 134 on the left side of the suspension chassis 2, and , The right holder pin 145 to the right holder guide portion 1 of the suspension chassis 2.
It is movably inserted into a guide hole 138 of 35 and attached to the suspension chassis 2. In this case, the lever shaft 178A of the detection portion 192 of the cartridge normal insertion detection mechanism F provided on the holder 143 is inserted into the opening portion 19 of the upper chassis of the stationary chassis 1.

A front panel 192 is provided on the front surface of the fixed chassis 1 as shown in FIGS.
Is attached. The front panel 192 has a box shape with a rear surface opened as shown in FIGS. 9 and 10.
A cartridge entrance 193 is formed on the front surface 192a. A dust cover 194 is provided inside the front panel 192 so as to be located behind the cartridge inlet / outlet port 193 and can be opened and closed.

That is, brackets 195 are attached to the left and right on the back side of the front surface 192a of the front panel 192, and the dust covers 194 rotatably support the spindle portions 194a at both ends of the brackets 195. The cartridge inlet / outlet port 193
Is blocked from behind. And the dust cover 19
A cam 196 is fixed to the right side of the No. 4. This cam 19
6 is formed by twisting a strip-shaped cam plate 196a by approximately 90 degrees.

Before the cartridge 300 is inserted, the suspension chassis 2 is locked to the stationary chassis 1 by the mechanical lock mechanism B.

That is, when the lock plates 62 and 88 of the left and right mechanical lock mechanisms 60L and 60R are moved forward, the lock portions 7 of the lock plates 62 and 88 are moved.
4, 75, 101, 102 are lock guides 63, 87
Together with the peripheral portions of the openings 70, 71, 90, 91 of the lock chassis 13 on the front and rear sides of the suspension chassis 2.
It holds 0L, 130R, 131L and 131R.

Next, the operation of the disk device configured as described above will be described. As shown in FIG. 39 (1), when the holder 143 is located on the cartridge inlet / outlet 8 side, the holding pin 151a of the holder 143 is located forward and interferes with the inside of the shutter closing spring 156, Locking portion 156 at the tip of shutter closing spring 156
b is retracted from the opening 154.

Then, the cartridge 300 is inserted into the cartridge inlet / outlet port 193 of the front panel 192, the dust cover 194 is pushed open, and is inserted from the cartridge inlet / outlet port 8 into the cartridge insertion portion 158 of the holder 143. When the front end surface portion of the cartridge 300 hits the cartridge receiving portion 163 of the holder 143, the shutter locking release claw 155 of the shutter opener 149 causes the groove 30 of the cartridge 300.
6 and the left and right cartridge holding hooks 146L and 146R of the holder 143 are inserted into the left and right cartridge holding recesses 305 of the cartridge case 301.
And the cartridge 300 is held by the holder 143 via the cartridge holding hooks 146L and 146R (see FIG. 39 (2)).

By pushing in the cartridge 300, electric power is turned on (switched on) to a control circuit (not shown) of the drive motor 121 of the drive mechanism 120, and the loader G is driven by the drive mechanism 120. Upon operation, the slide shutter of the cartridge 300 is released, the suspension chassis 2 is unlocked, and the cartridge 300 is automatically retracted.

(Operation of Cartridge Forward Insertion Detection Mechanism F)
The holding portion 144 of the holder 143 is provided with a normal insertion detecting piece portion 168, and the height of the normal inserting detection piece portion 168 is matched with the height dimension H of the groove portion 306 of the cartridge 300. As shown in FIG. 45, even when the cartridge 300 is inserted inside out, the correct insertion detecting piece portion 168 interferes with the end surface of the cartridge 300 to prevent erroneous insertion of the cartridge 300.

When the cartridge 300 is properly inserted, the detection curved surface portion 320 of the cartridge 300 hits the cartridge interference portion 174 of the detection plate 171, and the detection plate 171 is moved backward. Therefore, the detection lever 178 rotates against the spring, and the lever shaft 178A provided on the detection lever 178 is provided.
However, the detection switch operating unit 18 provided on the stationary chassis 1
The detection relay lever 182 of No. 1 is rotated against the spring 189, the detection switch lever 183 operates, the detection switch 190 is turned on, and the cartridge insertion detection is recognized (see FIGS. 29 and 30).

(Operation of Loader G) The drive motor 1
21 drives the rack gear to rotate via the worm gear 123, the worm wheel 124, and the gear train 125,
The loader G that meshes with this rack gear at the rack portion 52 moves rearward.

(Release Operation of Slide Shutter 304 in Cartridge 300) The holder pin engaging portion 50L on the left side of the loader G is slidably engaged with the holder pin 142, and the holder on the right side of the loader G. Since the pin engaging portion 50R is slidably engaged with the holder pin 145, the holder 143 is moved backward by the rearward movement of the loader G, and the cartridge 300 is moved backward.

For this reason, the holder 143 is retracted, and the holding pin 151a is moved to the shutter closing spring 15.
6, the locking portion 156b at the tip of the shutter closing spring 156 projects into the cartridge insertion portion 158 from the opening 154. In this case, the stopper 157 at the rear portion of the shutter opener 149 contacts the stopper 198 provided on the suspension chassis 2 and the shutter opener 149 does not move rearward (FIG. 39).
(3)).

The shutter locking release claw 155 of the shutter opener 149 pushes the shutter locking member of the cartridge 300 and retracts it to lock the locking claw portion 307 of the slide shutter 304 to the shutter locking member. To release. At this time, the locking portion 156b at the tip of the shutter closing spring 156 is locked in the shutter opening / closing hole 308 of the slide shutter 304. Therefore, the slide shutter 304 is released as the cartridge 300 moves rearward (FIG. 32).
(See (2) and (3)).

(Unlocking Operation of Suspension Chassis 2) When the loader G is moved rearward, the lock releasing operation portion 211 on the left side of the loader G interferes with the interference portion 69 of the lock operating member 61 of the left mechanical unit 60L. The lever lock operating member 61 is moved rearward against the spring 86. To this end, FIGS.
As shown in FIG. 6, the lock cam shaft 81 of the lock cam 78 is located inside the notch 66 by leaving the recess 67 of the lock actuating member 61, and the lock plate 62 is pulled backward by the spring force of the spring 86 to lock it. Parts 74, 7
5 is removed from the lock pins 130L and 131L on the left side of the suspension chassis 2.

At the same time, the lock release operating portion 200 on the right side of the loader G is moved to the right mechanical unit 60.
By interfering with the interference portion 110 of the R lock operating member 89, the lock operating member 89 is moved rearward against the spring 117. For this reason, the lock cam shaft 115 of the lock cam 113 is located inside the cam portion 109, apart from the end edge portion 109a of the cam portion 109 of the lock operating member 89, and the lock plate 88 is driven by the spring force of the spring 177.
Is pulled rearward so that the lock portions 101 and 102 of the lock portion are provided on the right side of the suspension chassis 2 with the lock pin 130.
The suspension chassis 2 is unlocked by being removed from R and 131R (FIG. 25, FIG. 26, FIG. 27, FIG.
8). To this end, the suspension chassis 2
Is supported by springs 128 at its four corners.

(Automatic retracting operation of the cartridge 300) Further, the holder 143 is moved rearward, and the holder pins 142 and 145 are guided by the left and right holder guide portions 134 and 135 of the suspension chassis 2 to move them. The holder guide portions 134, 135 are drawn into the descending holes 137, 139. At this time, the holder pins 142 and 145 lift the holder pressing member 162 against the spring and insert it into the entrances of the descending holes 137 and 139. After this insertion, the holder pressing member 162 is returned by the spring force. When the holder pins 142 and 145 are drawn into the descending holes 137 and 139, the hub of the turntable 132 is fitted into the center of the cartridge 300 which is seen through the opening at the center of the lower surface. Further, the reference pins 140 and 141 are inserted into the pin holes 309 of the cartridge 300. At this time, the holder pins 142 and 145 are not disengaged from the engaging recesses 51L and 51R of the holder pin engaging portions 50L and 50R.

In this state, power is turned on (switched on) to the control circuit (not shown) of the drive motor 121 of the turntable 132 and the control circuit of the drive motor of the optical pickup (not shown). ) Is turned on to rotate the information recording disk 302,
Further, the optical pickup is moved in the left-right direction (radial direction of the disc) by the screw feeding mechanism to perform reproduction or writing.

(Operation of the double cartridge insertion preventing mechanism A) When the loader G moves backward to carry out the horizontal transfer operation of the cartridge 300, the guide pin 26a fixed to the loader G guides the first connecting bar 32. The hole 35 is moved rearward to come into contact with the meandering cam portion 36 at the rear portion of the guide hole 35 (see FIGS. 12 and 13). For this reason, the guide pin 42 at the rear end of the first connecting bar 32 is moved to the sixth position.
The first connecting bar 32 moves leftward and rearward as it deviates from the bent portion 16a of the guide hole 16. With this movement, the second
The connecting bar 33 rotates in the clockwise direction against the spring 49 as shown in FIG. 13, and moves the protector 34 from the right side to the left side. At this time, the guide pins 45, 4 of this
6 is guided from the right side to the left side of the eighth guide hole 18, the double insertion prevention pin 40 at the front end portion of the protector 34.
Comes out in front of the cartridge insertion port 8 and is located at approximately the center thereof (see FIGS. 12 and 13). Therefore, the insertion of two or more cartridges 300 is prevented.

(Operation of opening / closing mechanism of dust cover 194) The dust cover 194 performs opening / closing operation together with the operation of the double cartridge insertion preventing mechanism A. That is, FIG.
As shown in (5), in the state before the protector 34 is activated, the dust cover 194 is provided with the cartridge inlet / outlet port 19
3 is closed. When the loader G operates and the protector 34 operates, the front end portion 3 of the protector 34
4a contacts the base portion 196-1 of the cam 196 and raises the cam 196 by approximately 90 degrees, whereby the dust cover 194 is opened as shown in FIG. 46 (4).

Then, as the protector 34 moves from the right side to the left side, the front end portion 34a of the protector 34 moves along the twist of the cam 196, and the dust cover 194 gradually closes following the cam 196. Then, when the double insertion preventing pin 40 of the protector 34 is located substantially at the center of the cartridge insertion opening 8, the front end portion 34a of the protector 34 is disengaged from the cam 196, and the dust cover 194 is inserted into the cartridge entrance / exit 193.
Is closed (see (3), (2), and (1) in FIG. 46).

Next, when reproduction or writing is completed,
The reverse movement of the loader G causes the ejection of the cartridge 300 and the locking operation of the suspension chassis 2.

(Reverse Movement of Loader G) The reverse rotation of the drive motor 121 causes the rack gear to rotate via the worm gear 123, the worm wheel 124, and the gear train 125, and the loader G meshing with this rack gear at the rack portion 52 is forward. Move to.

(Reverse operation of double cartridge insertion preventing mechanism A) When the loader G moves forward, the guide pin 26a fixed to the loader G moves forward in the guide hole 35 of the first connecting bar 32, and It is disengaged from the meandering cam portion 36 at the rear of the guide hole 35. Therefore, the guide pin 42 at the rear end of the first connecting bar 32 enters the bent portion 16a of the sixth guide hole 16, and the first connecting bar 32 moves to the front right. Along with this movement, the second connecting bar 33 is rotated counterclockwise by the spring 49, and the protector 34 is moved from the left side to the right side. For this reason, the double insertion preventing pin 40 of the protector 34 moves from the front side of the cartridge insertion port 8 to the right side and is inserted into the fixed side chassis 1.

(Operation of opening / closing mechanism of dust cover 194) By the reverse operation of the double cartridge insertion preventing mechanism A, the front end portion 34a of the protector 34 shown in FIG.
46 (1), (2),
In the order of (3), (4) and (5), the protector 3
The front end portion 34a of No. 4 contacts the cam 196, and the dust cover 194 opens.

(Discharging Operation of Cartridge 300) By the forward movement of the loader G, the engaging recesses 51L and 51R of the front and rear holder pin engaging portions 50L and 50R provided in the loader G are engaged with the holder pins 142 and 145. By pushing forward, the holder 143 moves forward,
The cartridge 300 is moved forward. The holder 143 moves forward to move the holder pins 142, 14
5 is guided by the left and right holder guide portions 134 and 135 of the suspension chassis 2, and the descending holes 137,
It is pulled back from 139 to the guide holes 136 and 138. At this time, the holder pins 142 and 145 lift the holder pressing member 162 against the spring and pull it back from the descending holes 137 and 139 to the guide holes 136 and 138. After that, the holder pressing member 1 is pressed by the spring force.
62 is restored.

Therefore, the center of the cartridge 300 is separated from the turntable 132, and is moved forward by being guided by the left and right holder guide portions 134 and 135, and is moved from the cartridge insertion portion 158 of the holder 143 to the cartridge insertion port 8 Discharged to the side.

(Closing Operation of Slide Shutter 304 in Cartridge 300) When the cartridge 300 is ejected, the locking portion 156b at the tip of the shutter closing spring 156 is locked in the shutter opening / closing hole 308. The slide shutter 304 is closed by the forward movement of the holder 143. Then, the shutter lock release claw 1 of the shutter opener 149.
55 is disengaged from the shutter locking member of the cartridge 300 and is projected, and the locking claw portion 307 of the slide shutter 304 is locked by the shutter locking member. Locking portion 156b at the tip of the shutter closing spring 156
Is removed from the shutter opening / closing hole 308.

(Locking Operation of Suspension Chassis 2) When the cartridge 300 is ejected, the loader G
Of the loader G, the inclined portion 212a of the left cam portion 212 of the loader G interferes with the lock cam shaft 81 of the left mechanical lock unit 60L to rotate the lock cam 78. Accordingly, the pin 80 fixed to the lock cam 78 moves the lock plate 62 forward, and the lock portion 7 formed on the lock plate 62.
4 and 75 lock the lock pins 130L and 131L on the left side of the suspension chassis 2 into the opening 7 of the lock guide 63.
The lock pins 130L and 131L are locked by being pressed against the peripheral portions of 0 and 71.

At the same time, the inclined portion 201a of the right cam portion 201 of the loader G interferes with the lock cam shaft 115 of the right mechanical lock unit 60R to rotate the lock cam 113. As a result, the pin 114 fixed to the lock cam 113 moves the lock plate 88 forward, and the lock portions 101 and 102 formed on the lock plate 88 guide the lock pins 130R and 131R on the right side of the suspension chassis 2 to the lock guide. The lock pins 130R and 131R are locked by being pressed against the peripheral portions of the openings 90 and 91 of the 87.

(Operation of Opening / Closing Mechanism of Dust Cover 194) When the front end portion 34a of the protector 34 comes off the cam 196, the dust cover 194 closes the cartridge inlet / outlet port 193 (see FIG. 46 (1)).

[0087]

As described above, according to the present invention, the fixed chassis, the movable chassis held by the fixed chassis via the elastic body and having the turntable and the pickup head mounted thereon, and the fixed chassis are provided. A mechanical lock mechanism that is provided and holds the lock pin of the movable chassis detachably to fix the movable chassis to the fixed chassis, and a disk cartridge that is provided on the movable chassis and holds a disk cartridge. Holder for loading and unloading, a loader provided on the fixed side chassis for carrying the holder in a predetermined carrying direction, and a mechanical lock mechanism provided at the loader at the end of the loading operation of the disk cartridge. Interfering and locking by this mechanical locking mechanism And a pin actuating means for locking the lock pin by the mechanical lock mechanism by interlocking with the mechanical lock mechanism at the initial stage of the ejecting operation of the disc cartridge, and the load side is provided on the surface of the fixed side chassis of the loader. A guide hole along the operation direction is provided, and one end of two cross links swingably connected by a spindle pin at an intersecting portion of an intermediate portion is slidably engaged with a loader side guide hole of the loader. , Because the other end of the cross link is slidably engaged with the chassis side guide hole of the fixed side chassis, and the spindle pin is slidably engaged with the guide hole of the fixed side chassis, The cross link slides at each end thereof, and at the intersection of the intermediate portions, the spindle pin connecting the intersection slides in the guide hole of the stationary chassis. Thereby preventing the intersection of the middle portion of the two cross links are moved transversely to the direction of movement of the loader. Therefore, the load at the motor driving point becomes stable, the speed changes or the problem of stopping is eliminated, and stable operation becomes possible.

[Brief description of 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 with a front cover disassembled.

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

FIG. 4A is an exploded perspective view of a fixed-side chassis in the same disk device, and FIG.

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

FIG. 6 is a perspective view seen from the back side of the fixed side chassis.

FIG. 7 is a perspective view with a part of the drive mechanism omitted in the disk device according to the present invention.

FIG. 8 is a perspective view of a fixed-side chassis including the drive mechanism structure.

FIG. 9 is a perspective view of a front cover.

FIG. 10 is a perspective view from the back side of the front cover including the dust cover.

11A is a perspective view from the front side of the dust cover, and FIG. 11B is a perspective view from the rear side of the dust cover.

FIG. 12 (1) is a perspective view of the double cartridge insertion preventing mechanism, and (2) is a plan view of the double cartridge insertion preventing mechanism.

FIG. 13 (1) is a perspective view of the cartridge double-insertion prevention mechanism in operation (2) is a plan view of the cartridge double-insertion prevention mechanism in operation

FIG. 14 (1) is a perspective view of the double cartridge insertion preventing mechanism in operation, and (2) is a plan view of the double cartridge insertion preventing mechanism in operation.

FIG. 15 (1) is a perspective view of the double cartridge insertion preventing mechanism in operation, and (2) is a plan view of the double cartridge insertion preventing mechanism in operation.

FIG. 16 is a perspective view of a cross link.

FIG. 17 is a plan view of the suspension chassis and the left and right mechanical lock units.

FIG. 18 is an arrow view from the T direction in FIG.

FIG. 19 is a side view of the left mechanical lock unit in an operating state.

20 is an arrow view from the U direction in FIG.

FIG. 21 is a side view of the operating state of the right mechanical lock unit.

FIG. 22 is an exploded perspective view of the left mechanical lock unit.

FIG. 23 is an exploded perspective view of a right mechanical lock unit.

FIG. 24 is an exploded perspective view of the right mechanical lock unit seen from the left side.

FIG. 25 (1) is a perspective view of a right mechanical lock unit in a locked state (2) is a side view of a right mechanical lock unit in a locked state

FIG. 26 (1) is a perspective view of the right mechanical lock unit in the unlocked state, and (2) is a side view of the right mechanical lock unit in the unlocked state.

FIG. 27 (1) is a perspective view of the unlocking operation state of the right mechanical lock unit, and (2) is a side view of the unlocking operation state of the right mechanical lock unit.

FIG. 28 (1) is a perspective view of the right mechanical lock unit in an unlocked state (2) is a side view of the right mechanical lock unit in an unlocked state

FIG. 29 (1) is a perspective view of the cartridge normal insertion detection mechanism, and (2) is a plan view of the cartridge normal insertion detection mechanism.

FIG. 30 (1) is a perspective view of the operating state of the cartridge positive insertion detecting mechanism, and (2) is a plan view of the operating state of the cartridge normal insertion detecting mechanism.

FIG. 31 is a perspective view of a mechanism portion on the suspension chassis side.

FIG. 32 is a perspective view showing a state where the mechanism is mounted on the suspension chassis side into the cartridge.

FIG. 33 is a perspective view of the mechanical part on the suspension chassis side as viewed from the rear.

FIG. 34 is a perspective view of a holder

FIG. 35 is an exploded perspective view seen from the back side of the holder.

FIG. 36 is a perspective view seen from the back side with the cartridge inserted in the holder.

FIG. 37 is a plan view of the same.

FIG. 38 is an enlarged view of part Q in FIG. 37.

39 (1), (2), and (3) are explanatory views of the operation of the shutter opener.

FIG. 40 is an exploded perspective view of the support portion of the cartridge gripping hook.

FIG. 41 is a perspective view of the same assembled state.

FIG. 42 is a perspective view of a rear pin and its mounting structure.

FIG. 43 is a perspective view of a rear pin in an assembled state.

FIG. 44 (1) is a perspective view of the correct insertion of the cartridge in the incorrect cartridge insertion prevention mechanism, (2) is the same plan view, and (3) is an enlarged view of the R portion of (2).

45 (1) is a perspective view of erroneous insertion of the cartridge in the erroneous insertion prevention mechanism of the cartridge, (2) is a plan view of the same, and (3) is an enlarged view of V portion of (2).

46 (1), (2), (3), (4), and (5) are perspective views of the operating state of the dust cover opening / closing mechanism.

FIG. 47 is a plan view of the front side of the cartridge.

FIG. 48 is an arrow view from the H direction in FIG. 47.

FIG. 49 is an arrow view from the direction I in FIG. 47.

FIG. 50 is a plan view of the back side of the cartridge.

[Explanation of symbols]

 1 Fixed side chassis 2 Suspension chassis (movable side chassis) 13 Third guide hole (chassis side guide hole) 14 Fourth guide hole (chassis side guide hole) 17 Guide hole 22,23 Loader side guide hole 24, 25 Cross Link 29 Spindle pin 143 Holder 300 Cartridge (disk cartridge) B Mechanical lock mechanism G Loader

Claims (1)

[Claims] 1. A fixed-side chassis, a movable-side chassis that is mounted on the fixed-side chassis via an elastic body and has a turntable and a pickup head mounted thereon, and a lock pin of the movable-side chassis that is provided on the fixed-side chassis. A mechanical lock mechanism for detachably gripping the movable side chassis to fix the movable side chassis to the fixed side chassis; a holder provided on the movable side chassis for holding a disc cartridge to load and eject the disc cartridge; A loader provided on the stationary chassis for carrying the holder in a predetermined carrying direction, and a lock pin provided on the loader and interfering with the mechanical lock mechanism at the end of the loading operation of the disk cartridge to lock the mechanical lock mechanism. Unlock the A pin actuating means for locking the lock pin by the mechanical lock mechanism by interfering with the mechanical lock mechanism at the initial stage of the discharging operation of the disc cartridge, and providing a guide hole along the operating direction of the loader on the surface portion of the fixed side chassis. , One end of two cross links swingably connected by a spindle pin at the intersection of the middle part is slidably engaged with a loader-side guide hole of the loader, and the other end of the cross link Is slidably engaged with a chassis side guide hole of the fixed side chassis, and the spindle pin is slidably engaged with a guide hole of the fixed side chassis.