JPH08203185A - Disk device - Google Patents

Abstract

PURPOSE: To provide a disk device without causing unpleasant sound due to external vibration. CONSTITUTION: One pair of cross links 24 and 25 formed out of a material having a spring property are turnably connected by a pivot pin 29 in their intersected parts of their intermediate sections. One end part of each of the cross links 24 and 25 is slidably engaged with guide holes 22 and 23 of a loader G respectively, while the other end part of each of the cross links 24 and 25 is slidably engaged with guide holes 13 and 14 of a fixed side chassis 1 respectively, and the pivot pin 29 is slidably engaged with a guide hole 17 of the fixed side chassis 1, and then the cross links 24 and 25 and the loader G are brought into pressurized contact with 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 information from an information recording disk of a mini disk cartridge of a magneto-optical recording system or writing information on the information recording disk.

[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 type of disc cartridge, there is a magneto-optical recording type mini disc cartridge. As shown in FIGS. 31 to 34, this disc cartridge (hereinafter, referred to as a cartridge) 300 is housed in a cartridge case 301. An information recording disc 302, a disc access hole 303 provided on one side or two sides of the cartridge case 301, and a slide shutter 304 for opening and closing the disc access hole 303 are provided.

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 are formed along the front-rear direction on the left and right end surface portions of the front side portion of the cartridge case 301, and on the left side groove portion 306. A shutter locking member (not shown) is provided on the way, and the shutter locking member is biased toward the groove 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 portion of the slide shutter 304.

There is a disc device as a device for recording information on the information recording disc 302 of the cartridge 300 and reproducing the information recorded on the information recording disc 302.

In a conventional disk device, a loader and a cross link are provided for loading or ejecting a cartridge. This loader was attached to the stationary chassis with play between them. Also, the cross link was attached to the fixed chassis and the loader so that there was some play between them.

[0006]

However, in the above-mentioned conventional disk device, the external load causes rattling of the loader with respect to the fixed chassis and the cross link with respect to the fixed chassis and the loader. There was a problem that an unpleasant sound was generated.

The present invention is intended to solve the above-mentioned conventional problems, and its object is to provide a connection between the cross link and the fixed side chassis and the loader, and a position between the loader and the fixed side chassis. The object of the present invention is to provide a disk device which eliminates the rattling and does not generate an unpleasant sound even when there is an external vibration.

[0008]

In order to achieve the above object, the present invention is directed to a fixed chassis and a movable chassis which is held by the fixed chassis via an elastic body and has a turntable and a pickup head mounted thereon. And a mechanical lock mechanism provided on the fixed side chassis, which detachably holds the lock pin of the movable side chassis to fix the movable side chassis to the fixed side chassis, and a mechanical lock mechanism provided on the movable side chassis. A holder for loading and unloading a cartridge, a loader provided on the fixed chassis for carrying the holder in a predetermined carrying direction, and a mechanical lock mechanism provided on the loader for the end of the loading operation of the disk cartridge. Interference with the lock pin of this mechanical lock mechanism. And a pin actuating means for releasing the lock and locking the lock pin by the mechanical lock mechanism by interfering with the mechanical lock mechanism at the initial stage of the ejecting operation of the disc cartridge, and the loader is mounted on the surface of the fixed side chassis. A guide hole is formed along the moving direction, and a pair of cross links made of a material having a spring property is rotatably connected by a support shaft pin at the intersection of the intermediate parts, and the support shaft pin is fixed on the fixed side chassis. Is slidably engaged with a guide hole of the cross link, and one end of the cross link is slidably engaged with a guide hole formed in the loader in a direction perpendicular to the moving direction of the cross link. Is slidably engaged with a guide hole formed in the fixed-side chassis at a direction perpendicular to the moving direction of the loader, and the cross link and the loader are placed above. Those which are pressed against the stationary chassis.

[0009]

According to the present invention having the above-mentioned structure, the cross link has the support shaft pin portion at each end portion and the intermediate intersection portion due to the resilience,
Pressure is applied to the stationary chassis and the loader, and the loader is pressurized by the cross link in this way, so that the loader pressurizes the stationary chassis. This allows
Rattling is eliminated between the cross link and the fixed side chassis and loader, and further between the loader and fixed side chassis.

[0010]

An embodiment of the present invention will be described below with reference to the drawings.

FIGS. 1 to 31, 34, and 35 show a disk device according to an embodiment of the present invention, FIG. 1 is a perspective view with a part omitted, and FIG. 2 is a perspective view showing a state in which a front cover is disassembled. 3 is an exploded perspective view, FIG. 4 is an exploded perspective view of a fixed side chassis, FIG. 34 is an X direction arrow view thereof, FIG. 35 is a cross-sectional view of a related structure of a cross link, a loader and an upper chassis, and FIG. 6 is an exploded perspective view showing the side chassis, FIG. 6 is a perspective view in which a part of the drive mechanism is omitted, FIG. 7 is a perspective view of a fixed side chassis having the drive mechanism, and FIG. 8 is a perspective view from the front side of the front cover. 9, FIG. 9 is a perspective view from the back side of the front cover, FIGS. 10 (a) and 10 (b) are side views and perspective views of the cross link, FIG. 11 is a plan view of the suspension chassis and the left and right mechanical lock units, and FIG. Is the T direction arrow in FIG. FIG. 13 is a side view of the operating state of the left mechanical lock unit, and FIGS. 14A and 14B are perspective views, side views, and FIGS. 15A and 15B of the locking state of the right mechanical lock unit. Is a perspective view, side view,
16 (a) and 16 (b) are a perspective view, a side view, and FIG. 17 of the unlocking operation state of the right mechanical lock unit.
(A), (b) is a perspective view of the unlocked state of the right mechanical lock unit, a side view, (a), (b) is a perspective view of the cartridge positive insertion detection mechanism, a plan view, and FIG.
(A) and (b) are perspective views and plan views of an operating state of the cartridge normal insertion detection mechanism, FIG. 20 is a perspective view of a suspension chassis side mechanism portion, and FIG. 21 is a cartridge inserted into the suspension chassis side mechanism portion. 22 is a perspective view of the mechanical portion of the suspension chassis side viewed from the rear, FIG. 23 is a perspective view of the holder, FIG. 24 is an exploded perspective view of the holder from the back side, and FIG. FIG. 26 is a perspective view seen from the back side in the inserted state.
28 is a plan view thereof, FIG. 27 is an enlarged view of a Q portion of FIG. 26, and FIG.
(A), (b) and (c) are explanatory views of the operation of the shutter opener, and FIGS. 29 (a), (b) and (c) are perspective views of the cartridge in the normal insertion state with respect to the erroneous insertion prevention mechanism of the cartridge, a plan view. Figure, enlarged view of R part, Figures 30 (a), (b),
(C) is a perspective view, a plan view, and an enlarged view of a V portion of a cartridge erroneous insertion state with respect to the cartridge erroneous insertion prevention mechanism. In the drawings, the Y direction is the front and the Z direction is the rear. 1 to 5, 1 is a fixed chassis, and 2 is a suspension chassis as a movable chassis. The fixed chassis 1 and the upper chassis 4
It is composed of the left and right side chassis 5 and 6. The upper chassis 4 has a surface portion 4A, a front surface portion 4B, and a rear surface 4C integrally formed from a sheet metal, and a bending locking piece is formed by cutting and raising the left edge portion 4a of each of the front surface portion 4B and the rear surface portion 4C. 3A is formed, and the locking recess 3 is formed by the bent locking piece 3A and the lower edge 4a. Mounting portions 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. The locking hooks 5B are locked in the locking recesses 3, the side chassis 5 is linked to the upper chassis 4, and the mounting portions 5A are fixed to the upper chassis 4 by screws. The right side chassis 6 is also fixed to the upper chassis 4 like the left side chassis 5.

The fixed-side chassis 1 constructed as described above
A cartridge insertion port 8 is formed in the front surface portion 4B, 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. On the right side of the rear surface portion 4C, a motor mounting portion 10 including a cutout portion is formed. On the surface portion 4A of the upper chassis 4 of the fixed side chassis 1,
First and second guide holes 11, which are long holes extending in the front-rear direction,
Reference numeral 12 is left and right, and third and fourth guide holes 13 and 14 as chassis-side guide holes, which are long holes extending in the left-right direction, are provided at rear portions, and fifth, sixth, and seventh holes are long holes extending in the front-rear direction. Guide holes 15, 16 and 17 of the second guide hole 12
On the other hand, eighth guide holes 18, which are long holes extending in the left-right direction that are substantially right angles to each other, are formed in the front portion, respectively. The right part of the eighth guide hole 18 is inclined rearward. Further, a first opening 19 which is long in the front-rear direction is formed on the left side of the surface portion 4A of the upper chassis 4, and a substantially triangular second opening 20 is formed on the right side of the surface portion.

The loader G is the first loader component 21.
And a second loader component 21a.
Loader-side guide holes 22 and 23, which are long holes extending in the left-right direction, are formed on the left and right of the rear portion of the first loader component member 21. A left side holder pin engaging portion 50L protruding downward is formed on the left side portion of the first loader component 21, and the holder pin engaging portion 50L is engaged with the engaging concave portion 51L.
have. Also, the left holder pin engaging portion 50L
A lock release operating portion 211 and a cam portion 212 having an inclined portion 212a are formed on the rear portion, and these constitute a left pin operating means.

A rack portion 52 projecting downward is formed at the right end portion of the first loader component member 21.
A rack 53 is formed on the. In the rack portion 52,
Guide pins 56 and 57, which are inserted through long guide holes 55 in the front-rear direction of the movable rack body 54 having the rack 54a, are attached, and the movable rack body 54 is moved forward and backward by the guide of these guide pins 56 and 57 and the guide holes 55. It is held so that it can move in any direction. A spring locking portion 56 is formed at the front end portion of the movable rack body 54, and a tension spring 59 is hooked on the spring locking portion 58 and the tip end portion of the guide pin 57. The elasticity of the tension spring 59 allows the movable rack body 54 to move. The movable rack body 54 is integrated with the rack portion 52 with the front end portion of the guide hole 55 contacting the guide pin 56.

A second loader component member 21a is fixed to the right side portion of the lower surface of the first loader component member 21.
At the right end of the loader component 21a, a holder pin engaging portion 50R, a cam portion 201 having an inclined portion 201a, and a lock release operating portion 200 are formed on the right side protruding downward. The holder pin engagement portion 50R is the engagement recess 5
It has 1R. In addition, the second loader component 21
A rear pin 19 of a holder 143, which will be described later, is provided at the left end of a.
A guide portion 203 for guiding 9 is formed, and these constitute the right pin actuating means.

The loader G thus constructed is arranged on the inner surface side of the upper chassis 4, and the guide pins 22a and 23a inserted into the first and second guide holes 11 and 12 of the upper chassis 4 are the first. Mounted on the left and right of the loader component member 21 of the
It is supported so as to be slidable in the front-rear direction by the guide of 3a and the first and second guide holes 11 and 12.

As shown in FIGS. 3, 4 and 10, a pair of cross links 24, 25 for operating the loader G are intersected at an intermediate portion thereof and can be rotated by a spindle pin 29 at this intersection. The spindle pin 29 is slidably inserted into the seventh guide hole 17 along the moving direction of the loader G in the upper chassis 4. Guide pins 26 and 27 are slidably inserted into the guide holes 22 and 23 in the direction perpendicular to the moving direction on the side of the loader G so that the cross link 24,
It is attached to the front end of 25. The guide pin 30 provided at the rear end portion of the cross link 24 is slidably inserted into the fourth guide hole 14 in the upper chassis 4 in the direction perpendicular to the moving direction of the loader G, and at the rear end portion of the cross link 25. The provided guide pin 31 is slidably inserted into the third guide hole 13 in the upper chassis 4 in the direction perpendicular to the moving direction of the loader G. The cross links 24 and 25 are formed in a bow shape from a material having a spring property, and are supported as described above in the upper chassis 4.
The loader G is pressed against the upper chassis 4. And loader G
When moving, the cross links 24 and 25 are pivoted about the support shaft pin 29 so that their angles can be varied with each other in the pressure contact state.

The stationary side chassis 1 is provided with a mechanical lock mechanism B. This mechanical lock mechanism B
As shown in FIG. 3 and FIG. 11 to FIG. 17, it is composed of a left side mechanical lock unit 60L provided on the left side chassis 5 and a right side mechanical lock unit 60R provided on the right side chassis 6.

A drive mechanism 12 is provided inside the stationary chassis 1.
0 is provided. As shown in FIGS. 6 and 7, the drive mechanism 120 includes a drive motor 1 mounted on the motor mounting portion 10.
21, the worm 123 is fixed to the output shaft of the drive motor 121, and the worm 123 is linked to the gear train 125 via the worm wheel 124.
25 is linked to a rack gear (not shown), and this rack gear is meshed with the rack 53 of the loader G.

As shown in FIGS. 3, 18, and 19, the fixed chassis 1 is provided with a detection switch actuation portion 181 of the cartridge positive insertion detection mechanism F.

As shown in FIGS. 3 and 20 to 22, the suspension chassis 2 as a movable chassis.
Has spring locking pieces 127 at its four corners, and these spring locking pieces 127, the spring locking pieces 202 of the stationary chassis 1 and the left mechanical lock unit 60L.
Spring locking piece 203, right side mechanical lock unit 6
A tension spring 128, which is an elastic body, is hooked on the 0R spring locking pieces 96 and 98, and the suspension chassis 2 is held by the fixed chassis 1 in a floating state by these tension springs 128. A damper 129 is interposed between the suspension chassis 2 and the stationary chassis 1. These dampers 129 are fixed to the fixed chassis 1 and the damper mounting portion 9 of the right mechanical lock unit 60R.

As shown in FIGS. 20 to 22, guide plates 160, 1 are provided on the left and right sides of the suspension chassis 2.
61 is fixed, and lock pins 130L, 131L, 130R, 13 are provided in front of and behind these guide plates 160, 161, respectively.
1R is fixed. Left front lock pin 13
0L and 131L are the left side mechanical lock unit 60
Inserted into the front and rear openings 70, 71 of the L lock guide 63, the right front and rear lock pins 130R, 131R
Are inserted into the front and rear openings 90, 91 of the lock guide 87 of the right mechanical lock unit 60R.
Note that this state is the unlocked state.

As shown in FIG. 20, the suspension chassis 2 has a turntable 132 arranged in the center thereof, and is positioned to the right of the turntable 132, and is punched out.
33 is formed, and an optical pickup 139 is provided in the punching 133. The optical pickup 139 is moved in the left-right direction (radial direction of the disc) by a screw feeding mechanism (not shown). A mechanism such as a drive motor for rotating 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 holder guide part 134 on the left side has 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.
The right holder guide part 135 includes 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. 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.

A holder pressing member 162 is attached to the rear of the guide plates 160 and 161 so as to be rotatable in the vertical direction by a support shaft 163. The holder pressing member 162 is provided with a stopper portion 162a protruding downward. There is. While the holder pressing member 162 is rotated downward by a spring (not shown), its stopper portion 162a is abutted against the stopper 164 provided on the guide plates 160 and 161, and is kept horizontal. .

On the left side of the suspension chassis 2,
Holder guide part 13 of the right guide plates 160 and 161
The holder 143 is held by the rollers 4 and 135 so as to be movable in the front-rear direction. As shown in FIGS. 23 and 24, the left side portion of the holder 143 is formed into a holding portion 144 having a U-shaped cross section.
The right side of the holder 143 is bent at a right angle. One holder pin 142 is attached to the front portion of the left side surface portion 144a of the holder 143, and one holder pin 145 is attached to the front portion of the right side surface portion 144b.

Cartridge receiving portions 164 and 165 are formed on the left and right sides of the back surface of the holder 143.
As shown in FIG. 25, cartridge holding hooks 146L and 146R are attached to the left and right sides of the back surface of the holder 143 by a pin 147 so as to be swingable in the left-right direction. These cartridge gripping hooks 146L, 146
R is biased toward the center of the holder 143 by the tension spring 148, the left cartridge holding hook 146L is formed on the stopper portion 166a formed on the left holding portion 144, and the right cartridge holding hook 146R is formed on the cartridge receiving portion 165. Each of the stopper portions 166b is kept in a neutral position.

Cartridge gripping hooks 146L, 146
R is made of synthetic resin, and a locking projection 167 protruding inward is formed on the tip thereof, and the locking projection 167 is formed as shown in FIG.
6, as shown in FIG. 27, it is set smaller than the cartridge holding recess 305 of the cartridge 300. Then, the cartridge 300 is inserted into the holder 143 against the elasticity of the tension spring 148, and the locking projections 167 of the cartridge gripping hooks 146L and 146R are inserted into the gripping recesses 305 of the cartridge 300 and the cartridge 3 is inserted.
Cartridge holding hook 146 when holding 00
L and 146R locking protrusions 167 are stoppers 166.
It is set so that the cartridge 300 is not strongly pressed by interfering with a and 166b, and the clearance K exists between them even if the locking projection 167 is inserted into the cartridge holding recess 305.

On the left side surface portion 144a of the holding portion 144 of the holder 143, a normal insertion detecting piece portion 168 which projects into the holding portion 144 is formed. This normal insertion detection piece 1
As shown in FIGS. 24 and 33, the height of 68 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. Therefore,
When the cartridge 300 is normally inserted, as shown in FIG. 29, the normal insertion detection piece 320 is inserted into the groove 306, but when the cartridge 300 is erroneously inserted, as shown in FIG. The curved surface portion 320 is the normal insertion detecting piece portion 168.
It interferes with and cannot be inserted.

On the left side of the surface of the holder 143, the detection section 192 of the cartridge normal insertion detection mechanism F is provided.

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. This shutter opener 14
An inner side surface portion 152 and a horizontal surface portion 153 are formed on the inner side of the front portion of 9, and an opening portion 154 is formed in the inner side surface portion 152. Inner surface portion 15 of 149
2, 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. A shutter closing spring 156 is fixed to the inside of the outer side surface portion 149b of the shutter opener 149 at an intermediate portion, the shutter closing spring 156 is bent inward, and the tip portion thereof has a substantially V-shaped locking portion 156a in plan view. Is formed, and the locking portion 156a is projected from the opening 154 into the cartridge insertion portion 158. Shutter opener 149
A stopper 157 is formed on the outer side of the rear portion, and the stopper 157 is a stopper 19 provided on the guide plate 161.
8 is interfered with (see FIG. 22).

In the holder 143 to which the shutter arpner 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 portion 134 on the left side of the suspension chassis 2 and the holder pin 143 on the right side. The holder pin 145 is the guide hole 1 of the holder guide portion 135 on the right side of the suspension chassis 2.
38 is movably inserted into the suspension chassis 2
Attached to.

As shown in FIGS. 1, 2, 8 and 9, a front panel 192 is mounted on the front surface of the stationary chassis 1. As shown in FIGS. 8 and 9, the front panel 192 has a box shape with an open rear surface.
A cartridge entrance 193 is formed on the front surface 192a. Inside the front panel 192, the dust cover 19 is provided behind the cartridge entrance 193.
4 is provided so that it can be opened and closed.

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, the lock plates 62, 88 of the left and right mechanical lock mechanisms 60L, 60R are moved forward, and the lock portions 74, 75, 101, 102 of the lock plates 62, 88 are
Openings 70, 71, 90, 9 of the lock guides 63, 87
1, along with the peripheral edge of the suspension chassis 1, lock pins 130L, 130R, 131L, 131 on the front and rear sides of the suspension chassis 1.
Holds R (see FIGS. 13 and 20 to 22).

The operation of the above configuration will be described below. 21, 22, and 28 (a), the cartridge 300 is inserted into the cartridge insertion portion 158 of the holder 143, and the cartridge 300 is
The front end face of the cartridge receiving portion 165 of the holder 143 is
When it hits, the shutter lock release claw 155 of the shutter opener 149 is inserted into the groove 306 of the cartridge 300, and the left and right cartridge holding hooks 146L and 146R of the holder 143 are inserted into the cartridge case 3.
01 is engaged with the left and right cartridge holding recesses 305,
As shown in FIG. 28B, the cartridge 300 is held by the holder 143 via the cartridge holding hooks 146L and 146R.

When the cartridge 300 is pushed in, electric power is supplied to the control circuit (not shown) of the drive motor 121 of the drive mechanism 120, and the drive mechanism 120 operates the loader G to operate the cartridge 3
00, the slide shutter 304 is opened, the suspension chassis 2 is unlocked, and the cartridge 300 is automatically retracted.

(Operation of Loader G) When the drive motor 121 is driven as described above, the rack gear rotates 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 rearward. Move to. At this time, as shown in FIG.
As shown in (c), the upper and lower large diameter portions of the support shaft pin 29 provided at the intersections of the cross links 24, 25 have edges 17a, 1 of the seventh guide hole 17 in the upper chassis 4, respectively.
7b is engaged with the upper and lower portions of the cross link 24, and the upper and lower large diameter portions of the guide pins 30 provided at the end portions of the cross links 24 are the edge portions 14a of the fourth guide holes 14 in the upper chassis 4.
The upper and lower large diameter portions of the guide pins 31 provided on the ends of the cross links 25 are engaged with the upper and lower portions of the cross link 25 and the edge portions 13a, 13 of the third guide hole 13 in the upper chassis 4 are formed.
It is engaged with the upper and lower sides of b. And cross link 2
Reference numerals 4 and 25 have spring properties, and are constantly pressed against the upper chassis 4 regardless of the position of the loader G.

On the other hand, the upper and lower large diameter portions of the guide pin 26 provided at the end portion of the cross link 24 are engaged with the upper and lower edges 22a and 22b of the guide hole 22 of the first loader component member 21 to cross. The upper and lower large diameter portions of the guide pin 27 provided at the end of the link 25 are engaged with the upper and lower edges 23a and 23b of the guide hole 23 of the first loader component 21. Since the cross links 24 and 25 are made of the material having the spring property as described above, the cross links 24 and 25 are provided at the intersections of the cross links 24 and 25, and the edge portions 17a and 17b of the seventh guide hole 17 of the upper chassis 4 are provided. Pressurization is generated between the upper and lower supporting shaft pins 29, and the loader G is constantly pressed against the upper chassis 4 regardless of its position. (Slide shutter 30 in cartridge 300
4, the left holder pin engaging portion 50L of the loader G is slidably engaged with the holder pin 142, and the right holder pin engaging portion 50 of the loader G is
Since R is slidably engaged with the holder pin 145, the holder 143 and the cartridge 300 move rearward as the loader G moves rearward as described above. At this time, since the stopper 157 at the rear portion of the shutter opener 149 is in contact with the stopper 198 provided on the suspension chassis 2, the shutter opener 149 does not move rearward (see FIG. 28 (c)).

When the cartridge 300 is retracted as described above, the shutter locking release claw 155 of the shutter opener 149 pushes the shutter locking member of the cartridge 300 to retract it, and the shutter locking of the locking claw portion 307 of the slide shutter 304. The shutter locking release claw 155 abuts the slide shutter 304 while unlocking the member. As the cartridge 300 moves rearward, the slide shutter 304 is opened. (Unlocking Operation of Suspension Chassis 2) As the loader G moves rearward as described above, the lock releasing operation portion 211 on the left side of the loader G causes the interference portion 69 of the lock operating member 61 of the left mechanical unit 60L.
And the lock actuating member 61 is moved rearward against the tension spring 86. Accordingly, FIG. 12 and FIG.
As shown in FIG. 6, the lock cam shaft 81 of the lock cam 78 is located inside the notch 66 by removing the recess 67 of the lock operating member 61, and the lock plate 62 is locked by the spring force of the tension spring 86.
Is pulled rearward, and the lock portions 74 and 75 are disengaged from the lock pin 130L131L on the left side of the suspension chassis 2.

At the same time, the right unlocking operation portion 200 of the loader G interferes with the interference portion 110 of the lock operating member 89 of the right mechanical unit 60R, and the lock operating member 89 is moved backward against the tension spring 117. Moving. Along with this, the lock cam shaft 11 of the lock cam 113
5 is an end edge portion 109 of the cam portion 109 of the lock operating member 89.
The lock plate 88 is pulled rearward by the spring force of the tension spring 177 so that the lock portions 101 and 102 of the lock plate 88 are pulled out of the suspension chassis 2 and are located inside the cam portion 109.
The lock is released from the lock pins 130R and 131R on the right side of the suspension chassis 2 and the suspension chassis 2 is unlocked (see FIGS. 14, 15, 16 and 17). As a result, the suspension chassis 2 is supported by the springs 128 at its four corners.

(Automatic retracting operation of the cartridge 300) Further, the holder 143 moves rearward, the holder pins 142 and 145 move to the left of the suspension chassis 2,
Guided by the right holder guide portions 134 and 135, the descending holes 137 of these holder guide portions 134 and 135,
Attracted to 139. At this time, the holder pin 14
2, 145 lifts the holder pressing member 162 against the spring and inserts it into the entrance of the descending holes 137, 139.
After this insertion, the holder pressing member 162 is returned by spring force. The holder pins 142 and 145 have the descending holes 137,
When the cartridge 300 is pulled in, the turntable 13 is placed at the center of the cartridge 300 through the opening at the center of the lower surface.
Two hubs fit together. 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 do not come off from the engaging recesses 51L and 51R of the holder pin engaging portions 50L and 50R.

In this state, electric power is turned on (switched on) to the control circuit of the drive motor 121 of the turntable 132 (neither is shown), and the control circuit of the drive motor of the optical pickup (not shown). ), The information recording disc 302 is rotated, and 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.

When the reproduction or the writing is completed, the loader G is moved backward to eject the cartridge 300 and lock the suspension chassis 2.

(Reverse movement of loader G) Drive motor 1
By the reverse rotation drive of 21, the rack gear rotates via the worm gear 123, the worm wheel 124, and the gear train 125, and the loader G meshed with the rack gear in the rack portion 52 moves forward.

(Discharging Operation of Cartridge 300) The forward movement of the loader G causes the front and rear holder pin engaging portions 50L and 50R of the loader G to engage with the engaging recesses 51L.
When 51R pushes the holder pins 142 and 145 forward, the holder 143 moves forward and the cartridge 300 moves forward. The holder 143 moves forward 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 from the descending holes 137 and 139 to the guide holes 136 and 136.
It is pulled back to 138. At this time, the holder pin 14
2, 145 lifts the holder pressing member 162 against the spring and lifts the holder pressing member 162 from the descending holes 137, 139 to the guide holes 136, 1
Is pulled back to 38. After that, the holder pressing member 162 is returned to the original position by the spring force.

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

(Operation of Closing Slide Shutter 304 in Cartridge 300) When the cartridge 300 is ejected, the locking portion 156 at the tip of the shutter closing spring 156.
Since b is locked in the shutter opening / closing hole 308, the slide shutter 304 is closed by the forward movement of the holder 143. And the shutter opener 14
9, the shutter lock release claw 155 is the cartridge 300.
The locking claw portion 307 of the slide shutter 304 is locked by the shutter locking member.

(Locking Operation of Suspension Chassis 2) When the cartridge 300 is ejected, the inclined portion 212a of the cam portion 212 on the left side of the loader G is moved forward by the movement of the loader G so that the left mechanical lock unit 60L.
The lock cam 78 rotates by interfering with the lock cam shaft 81. As a result, the pin 80 fixed to the lock cam 78 moves the lock plate 62 forward, and the lock portions 74 and 75 formed on the lock plate 62 cause the lock pins 74L and 1L on the left side of the suspension chassis 2 to move.
31L is pressed against the peripheral portions of the openings 70, 71 of the lock guide 63, and the lock pins 130L,
Lock 131L.

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. This lock cam 1
The pin 114 fixed to 13 moves the lock plate 88 forward, and the lock portions 101 and 102 formed on the lock plate 88 lock the lock pins 130R and 131R on the right side of the suspension chassis 2 to the lock guide 87.
It will be pressed against the peripheral edge of the openings 90, 91 of
The lock pins 130R and 131R are locked.

[0051]

As described above, according to the present invention, a guide hole is formed in the surface portion of the stationary chassis along the moving direction of the loader, and a pair of cross links made of a material having a spring property is provided to cross the middle portion. Part of the cross link is rotatably connected by a support shaft pin, and the support shaft pin is slidably engaged with the guide hole of the fixed side chassis so that one end of the cross link is perpendicular to the moving direction of the loader. Slidably engaged with a guide hole formed in a direction, and the other end of the cross link slidably engaged with a guide hole formed in the fixed chassis in a direction perpendicular to the moving direction of the loader, The cross link presses the fixed side chassis and the loader with the support shaft pins at the intersections of the ends and the middle of the cross link due to the spring property. Because loaders are to pressurize the fixed side chassis, between the cross Tink and the upper chassis and loader, more eliminates backlash between the loader and the upper chassis. Therefore, it is possible to prevent generation of unpleasant noise due to external sliding.

[Brief description of drawings]

FIG. 1 is a perspective view showing a disk device according to an embodiment of the present invention with a part omitted.

FIG. 2 is a perspective view showing the disc device with a front cover disassembled.

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

FIG. 4 is an exploded perspective view showing a stationary chassis in the disk device.

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

FIG. 6 is a perspective view in which a drive mechanism in the disk device is partially omitted.

FIG. 7 is a perspective view showing a fixed-side chassis including the drive mechanism.

FIG. 8 is a front perspective view of a front cover used in the disk device.

FIG. 9 is a perspective view from the back side of the front cover.

FIG. 10A is a side view showing a cross link used in the disk device, and FIG. 10B is a perspective view showing the cross link.

FIG. 11 is a plan view of a suspension chassis and left and right menial lock units in the same disk device.

12 is a view from the direction of the arrow T in FIG.

FIG. 13 is a side view of an operating state of a left mechanical unit in the disk device.

FIG. 14 (a) is a perspective view of the right mechanical lock unit in a locked state in the disk device. FIG. 14 (b) is a side view of the right mechanical lock unit in a locked state.

FIG. 15A is a perspective view of the right side mechanical lock unit in an unlocked state, and FIG. 15B is a side view of the right side mechanical lock unit in an unlocked state.

FIG. 16 (a) is a perspective view of the lock releasing operation state of the right mechanical lock unit. FIG. 16 (b) is a side view of the lock releasing operation state of the right mechanical lock unit.

FIG. 17A is a perspective view of the right side mechanical lock unit in an unlocked state. FIG. 17B is a side view of the right side mechanical lock unit in an unlocked state.

FIG. 18A is a perspective view of a cartridge positive insertion detection mechanism in the disk device, and FIG. 18B is a plan view of the cartridge normal insertion detection mechanism.

FIG. 19 (a) is a perspective view of the operating state of the same cartridge positive insertion detecting mechanism, and (b) is a plan view of the operating state of the same cartridge positive insertion detecting mechanism.

FIG. 20 is a perspective view of a mechanism portion on the suspension chassis side of the disk device.

FIG. 21 is a perspective view showing a state in which a cartridge is inserted into a mechanism portion on the suspension chassis side of the disk device.

FIG. 22 is a perspective view of a mechanism portion on the suspension chassis side as seen from the rear.

FIG. 23 is a perspective view of a holder in the disc device.

FIG. 24 is an exploded perspective view of the holder seen from the back side.

FIG. 25 is a perspective view seen from the back side with the cartridge inserted in the holder.

FIG. 26 is a plan view of the same.

FIG. 27 is an enlarged view of part Q of FIG.

FIG. 28 (a) is an operation explanatory diagram of a shutter opener in the same disc device. (B) An operation explanatory diagram of a shutter opener in the same disc device. (C) An operation explanatory diagram of a shutter opener in the same disc device.

FIG. 29 (a) is a perspective view of the correct insertion of the cartridge in the incorrect insertion prevention mechanism of the cartridge used in the disk device, FIG. 29 (b) is the same plan view, and FIG.

FIG. 30A is a perspective view of an erroneous insertion of the cartridge in the erroneous insertion prevention mechanism of the cartridge used in the disk device, and FIG. 30B is a plan view of the same.

FIG. 31 is a plan view of the front side of the cartridge.

32 is a view in the direction of arrow H in FIG. 31.

FIG. 33 is an arrow view from the I direction in FIG. 31.

FIG. 34 is a plan view of the back side of the cartridge.

FIG. 35 is an X-direction arrow view of an exploded perspective view showing a stationary chassis in a disk device according to an embodiment of the present invention.

FIG. 36 is a cross-sectional view showing a related structure of a cross link, a loader, and an upper chassis used in the disk device in the embodiment of the present invention.

[Explanation of symbols]

 1 Fixed side chassis 2 Movable side chassis 24 Cross link 25 Cross link 29 Spindle pin B Mechanical lock mechanism F Cartridge forward insertion detection mechanism G Loader 132 Turntable 300 Cartridge

Claims (1)

[Claims] 1. A fixed chassis, a movable chassis which is held by the fixed chassis via an elastic body and has a turntable and a pickup head mounted thereon, and a fixed chassis which is provided on the fixed chassis and locks the movable chassis. A mechanical lock mechanism that removably grips the pin to fix the movable chassis to the fixed chassis, a holder provided on the movable chassis for loading and ejecting the disk cartridge, and a fixed chassis provided on the fixed chassis. And a loader for transporting the holder in a predetermined transport direction, and a locker provided on the loader, which interferes with the mechanical lock mechanism at the end of the loading operation of the disc cartridge to unlock the lock pin by the mechanical lock mechanism. And the ejecting operation of the above disc cartridge In the initial stage of operation, the mechanical lock mechanism is provided with a pin actuating means for locking the lock pin by the mechanical lock mechanism, and a guide hole along the loader moving direction is formed in the surface portion of the fixed side chassis, and spring property is provided. A pair of cross links made of a material having a is rotatably connected by a support shaft pin at the intersection of the intermediate parts, and the support shaft pin is slidably engaged with the guide hole of the fixed-side chassis, One end of the cross link is slidably engaged with a guide hole formed in the loader in a direction perpendicular to the moving direction of the loader, and the other end of the cross link is connected to the stationary chassis with the moving direction of the loader. A disk characterized in that it is slidably engaged with a guide hole formed in a right angle direction, and the cross link and the loader are pressed against the stationary chassis. Location.