JPH1139825A - Disc cartridge and driver - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a thinner and smaller driver concerning a type which carries a disc cartridge housing a disc. SOLUTION: Recessed parts 16, 17 and 18 are formed outside a housing chamber to house a disc 2 of a case body of a disc cartridge and engaging parts 31 and lock hinges 19 and 20 are arranged in the recessed parts 16 and 17 so as to be engaged with shutter openers of a driver of a shutter 6. When the disc cartridge 1 is mounted on the driver, the shutter openers, a transfer motor and a circuit mounted part are inserted into the recessed parts 16, 17 and 18 of the case body 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk cartridge used for an optical disk device as a storage device of a computer or the like and a drive device to which such a cartridge is mounted, and is particularly suitable for reduction in size and thickness.

[0002]

2. Description of the Related Art An optical disk for recording and reproduction is housed in a cartridge case to prevent fingerprints and dust from adhering. Such an optical disk drive device is used as a recording device of a computer. And in recent years,
With the spread of portable computers, miniaturization and thinning of optical disk drive devices are desired.

Hereinafter, an example of a conventional optical disk cartridge and an optical disk drive device having the cartridge will be described with reference to the drawings.

FIG. 11 is an external perspective view of a cartridge conforming to the international standard for 90 mm optical disks. This cartridge 100 has an upper half 101 and a lower half 102
The optical disk 104 is accommodated in a substantially rectangular case main body 103 composed of The upper surface of the case body 103 is flat, and has an opening 105 into which a disk motor and an optical pickup can be inserted, and a positioning hole 106. A slider 107 is slidably held on a side surface of the case body 103, and the slider 107
A shutter 108 for opening and closing the opening 105 is fixed to 7. The shutter 108 is connected to the case body 10
The opening 1 is formed by the torsion coil spring 109 disposed inside the opening 3.
05 is closed.

FIG. 12A shows the cartridge 1 described above.
FIG. 12 is a plan view of the drive device in which
(B) is a side view thereof. The optical disk device is a housing 10
9, a chassis base 110 is held by an anti-vibration rubber or the like (not shown), and a disk motor 111, an optical pickup 112, a shutter opener 113, a positioning pin 114, a reference pin 1
15, a circuit board 117 on which a short circuit-mounted component 116 is mounted, a circuit board 119 on which a tall circuit-mounted component 118 is mounted, a cartridge loading mechanism (not shown), a transfer mechanism for an optical pickup, and the like. ing. When the cartridge 100 is transported to a predetermined position shown on the chassis base 110 by the cartridge loading mechanism, the shutter opener 113 engages with the slider 107 to open the shutter 108 into the opening 1.
05 is moved in the opening direction. With such an operation, the cartridge 100 or the chassis base 110
Moves up and down, the cartridge 100 and the chassis base 110 approach each other, the disc motor 111 and the optical pickup 112 are inserted into the opening 105 of the cartridge 100, and the positioning pins 114 engage with the positioning holes 106 of the cartridge 100. Then, the reference pin 115 also contacts the case body 103 so that the cartridge 100
Is fixed at a predetermined position. When the cartridge 100 is mounted at a predetermined position, components other than the positioning pins 114 arranged on the chassis base 110 are
Is arranged at a position that does not come into contact with the case main body 103. In FIG. 12B, the circuit board 117 below the cartridge 100 has a short circuit-mounted component 11.
6 and the tall circuit-mounted component 118 and the shutter opener 113 are arranged outside the cartridge 100.

[0006]

However, in the above-described conventional disk cartridge, the upper surface of the case body has a flat shape, and a slider for opening and closing the shutter is formed on the side surface of the case body. Have been. In the drive device in which such a disk cartridge is mounted, the space on the upper surface side and the lower surface side of the place where the cartridge is mounted is narrower than other places by the thickness of the cartridge. Further, a shutter opener for opening and closing the shutter of the cartridge needs to be arranged outside the place where the cartridge is mounted. Therefore, in the combination of the conventional disk cartridge and the drive device, it is difficult to arrange tall circuit-mounted components and mechanical components in the upper and lower spaces of the mounting position of the cartridge, and design freedom for making a thin drive device is difficult. There was a problem that there was no degree. Furthermore, even if a thin drive device is made,
A shutter opener, a tall circuit-mounted component, and the like are arranged outside the place where the cartridge is mounted, and there is a problem that it is difficult to reduce the size of the drive device.

An object of the present invention is to provide a small and thin drive device.

[0008]

In order to solve the above-mentioned problems, the present invention provides a storage case for storing a disk inside a substantially rectangular case main body, and two cases facing the disk of the case main body. At least one of the surfaces has an opening facing the disk from outside the case, and a recess or a through hole is formed in a part of the region not including the storage portion in the two case surfaces. It is a disk cartridge characterized by the following.

Further, the case body has a movable shutter for opening and closing the opening, the shutter having an engaging portion for engaging with a shutter opener on the apparatus side, and when the shutter is opened. A disc cartridge may be provided in which the engaging portion is disposed inside the recess or through hole such that a part or the whole of the shutter opener is located inside the recess or through hole.

[0010] An insertion opening may be formed in the side wall surface of the case body so that the engaging portion of the shutter can be exposed from outside the side wall surface of the case body.

Further, a lock mechanism may be provided in the concave portion or the through hole of the case body to engage with a part of the shutter and lock the shutter when the shutter closes the opening.

The lock mechanism may be configured to lock the shutter by engaging with an engaging portion of the shutter when the shutter closes the opening.

The shutter has a U-shape extending from one of the side wall surfaces of the case main body to the opposing side wall surface, and the shutter has a substantially symmetrical position with respect to a center line coincident with the shutter moving direction of the case main body. May have a pair of engagement portions.

Further, a pair of lock mechanisms are provided in the recesses or through holes of the case main body to lock the shutter by engaging with a pair of engagement portions of the shutter when the shutter closes the opening. A configuration may be used.

On the other hand, in the drive device of the present invention having the disk cartridge mounted thereon, when the disk cartridge is mounted at a predetermined position inside the device, a part of the members provided in the device may have a concave portion or a concave portion of the disk cartridge. A drive device arranged to be inserted into a through hole.

Further, the disk cartridge having a shutter may be provided with a shutter opener which engages with an engagement portion of the shutter.

In addition, a cartridge holder for inserting the disk cartridge into a disk cartridge having an insertion opening on the side wall surface of the case body and transporting the disk cartridge to a predetermined position in the apparatus is provided. And a shutter opener that engages with an engagement portion of the shutter is provided at a position where the shutter opener can be inserted from an insertion opening formed in the disk cartridge.

A disk holder having a pair of engagement portions of a shutter and a pair of lock mechanisms, the cartridge holder being capable of inserting the disk cartridge and transporting the disk cartridge to a predetermined position inside the apparatus; A drive device may be provided in which a pair of shutter openers engaging with the engagement portion of the shutter is provided at a position inside the cartridge holder where it can be inserted from an insertion opening formed in the disk cartridge. .

[0019]

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

FIG. 1A is a perspective view of the upper surface side of the disk cartridge according to the embodiment of the present invention.
FIG. 1B, which is a perspective view of the lower surface side, and FIG. 2 which is a perspective view of each part constituting the same, will be described.

As shown in FIG. 2, the disk cartridge 1 containing the disk 2 shown in FIG.
The lower half 5 and the shutter 6 are provided.

In FIG. 1, the case main body 3 of the disk cartridge 1 is formed in a substantially flat rectangular shape by superposing and ultrasonically welding an upper half 4 and a lower half 5 which are molded of synthetic resin. . Case body 3
Is provided with a storage chamber 7 in which the disk 2 can be rotatably stored. On the inner surface side of the lower half 5, a basin-shaped recess 8 substantially conforming to the shape of the disk 2 is formed.
The storage room 7 is configured by being covered. Disc 2
Denotes an optical disk, on one side of which an information recording surface from which signals can be read and written is formed, and a hub 2a having a hole made of a magnetic material is fixed at the center. An opening 9 is formed on the bottom surface of the recess 8 of the lower half 5 so that a turntable 57 and an optical pickup 58 of a disk motor described later can be inserted into the storage chamber 7 from outside. In addition, a step portion 1 along the side wall surface is provided on both opposing wall surfaces of the lower half 5.
0 is formed and overlaps the upper half 4 to form a shutter guide groove 11 for guiding and holding the shutter 6 shown in FIG. Further, on the side wall surface of the lower half 5, a fitting portion 12 formed of an inclined cutout for fitting the shutter 6 into the shutter guide groove 11 is formed. On the other hand, three through holes 13 are provided outside the recess 8 of the lower half 5,
14 and 15 are formed. Such through holes 13, 1
4 and 15 are covered with the upper half 4, so that the case main body 3 becomes concave portions 16, 17, and 18 shown in FIG. Inside the through holes 13 and 14 of the lower half 5, lock hinges 19 and 21 which are lock mechanisms for engaging with engagement portions 31 and 32 of the shutter 6 described later are provided. The lock hinges 19 and 21 are integrally formed with the lower half 5 and have lock projections 20 and 22 at their free ends.
Are elastically supported and are displaceable by an external force. Further, the lock hinges 19 and 21 are arranged symmetrically with respect to the case body 3. The lock projection 2 is provided on the side wall surface 23 adjacent to the through holes 13 and 14 of the lower half 5.
Faced with 0 and 22, insertion holes 24 and 25 are formed in which a shutter opener described later can be inserted. The lower half 5 is provided with a positioning hole 26 into which a positioning pin 60 described later is fitted.

Next, the shutter according to the present embodiment will be described. In FIG. 2, the shutter 6 is formed by press-forming a metal plate. Shutter 6
The cross section from one of the side walls having the shutter guide grooves 11 of the case body 3 to the opposing side wall surface is U-shaped, and the guide pawls 27 engaging with the shutter guide grooves 11 are provided at both free ends. Are formed. The main surface 28 of the shutter 6 is provided with a shielding portion 29 for closing the opening 9 of the case body 3 and an opening 30 slightly larger than the opening 9 for opening the opening 9. Further, a pair of engaging portions 31 and 32 are formed on the shutter 6 at symmetrical positions from a center line coinciding with the shutter moving direction of the case body 3. The engaging portions 31 and 32 have a cutout shape formed at a bent portion from the main surface 28, and can be arranged at a position facing the insertion ports 24 and 25 inside the concave portions 16 and 17 of the main body case 3 described above. Have been. Further, when the shutter 6 closes the opening 9,
The lock projections 20 of the lock hinges 19, 21 are provided at 1, 32,
22 can be fitted.

Next, a description will be given of the assembling and the main operation of the shutter of the disk cartridge according to the embodiment.

First, the incorporation of the shutter 6 into the case body 3 will be described. Guide claws 27 of shutter 6
When the shutter 6 is pushed toward the case body 3 after being arranged in contact with the fitting portion 12 of the lower half 5, the guide claw 27 of the shutter 6 made of a metal plate is directed outward along the inclination of the fitting portion 12. While elastically deforming, it goes over the fitting portion 12 and the deformation is released, and fits into the shutter guide groove 11. Once the shutter 6 is attached to the case body 3, it does not come off naturally. After the shutter 6 is mounted on the case main body 3, the shutter 6 is guided by the shutter guide groove 11, so that the shutter 6 can slide along the shutter guide groove 11.

Next, the open / closed state of the shutter 6 will be described.
This will be described with reference to FIG. 1B showing a state in which the shutter 6 is closed, FIG. 3 showing an enlarged view of the inside of the concave portion 16, and FIG. 4 showing a state in which the shutter 6 is open.
In FIG. 1B and FIG. 3, the shielding portion 29 of the shutter 6 is shown.
Cover the opening 9 of the case body 3, the lock projections 20, 22 of the lock hinges 19, 21
Of the shutter 6
Is immobile. In this state, most of the concave portions 16 and 17 of the case main body 3 are covered with the shutter 6. Next, in FIG. 4, when the opening 30 of the shutter 6 is located at the opening 9 of the case main body 3 and the opening is opened, the shutter 6 is provided with the recesses 16, 17, 1, and 1 of the case main body 3.
The recesses 16, 17, 18 are open to the outside of the case body 3 so as not to cover most of the portion 8.

Next, a drive device according to an embodiment of the present invention on which the disk cartridge 1 is mounted will be described with reference to FIG. 5 which is an exploded perspective view of each part and FIG. 6 which is an external perspective view.

In FIG. 5, reference numeral 41 denotes a box-shaped outer casing having an open ceiling, and an eject button 4 is provided on the side.
2 and other operation buttons are arranged,
Support shaft holes 44 for fitting and fixing the support shafts 43 are formed at opposing positions near the corners of the opposing side surfaces. A cartridge holder 46 described later, which moves in conjunction with the eject button 42, is provided on an inner side surface of the outer housing 41.
A lock hook 45 for locking is provided. 4
Reference numeral 6 denotes a cartridge holder into which the disk cartridge 1 is inserted, and a top plate 47, a side wall 48, and a lower guide plate 49.
It is composed of At a position facing the rear ends of the two side walls 48 near each other, a rotation fulcrum hole 50 into which the above-described support shaft 43 is fitted and rotatably supports the cartridge holder 46 is provided. In the vicinity of the front end of one of the side walls 48, a lock piece 51 that can be engaged with the lock hook 45 described above is provided. As shown in FIG. 6, the rear end portions of the two lower guide plates 49 are provided with hemispherical projections 54 engageable with the engaging portions 31 and 32 of the shutter 6 of the disc cartridge 1 described above.
Shutter openers 52 and 53 having 55 are fixed to be elastically displaceable. The shutter openers 52 and 53 are arranged so that when the disc cartridge 1 is inserted into the cartridge holder 46, the shutter openers 52 and 53 can be inserted into the recesses 16 and 17 from the insertion ports 24 and 25 of the case body 3. The cartridge holder 46 is supported by the support shaft 4 fitted and fixed in the rotation support hole 50 of the exterior housing 41.
3 is rotatably supported. The cartridge holder 46 covers the ceiling of the exterior housing 41. When the ceiling is closed, the lock hook 45 engages with the lock piece 51 and is locked and held.

Reference numeral 56 denotes a base chassis. On the base chassis, main mechanical components such as a disk motor turntable 57, an optical pickup 58, a transfer motor 59, a positioning pin 60 which comes into contact with the disk cartridge 1, a reference pin 61, A circuit board 65 on which circuit mounting components 62 and 63 and a connector 64 are mounted is arranged. The above-described base chassis 56 and members arranged on the base chassis 56 will be described in detail. The base chassis 56 is a rectangular flat plate made of a metal plate, and has an opening 66 for accommodating the optical pickup 58 in the center thereof. The turntable 57 has a fitting shaft 67 and a clamp magnet 68 at the center thereof, and is arranged substantially at the center of the base chassis 56. The optical pickup 58 is placed in the opening 66 of the base chassis 56 and includes a lens actuator 69 inserted into the opening 9 of the disc cartridge 1 and an optical base 70 not inserted. The other end is fitted into the edge of the opening 66 of the base chassis 56. Further, the teeth of the nut piece 71 fixed to the optical base 70 are meshed with the screw shaft 69, and the rotation of the transfer motor 59 allows the optical pickup 58 to transfer in the direction of arrow M. The transfer motor 59 is, for example, a stepping motor, and a screw shaft 69 is directly connected to a motor shaft. The transfer motor 59 is substantially the same height as the turntable 57 and the base chassis 56
It is located at a position where it protrudes more and enters the recess 18 when the disk cartridge 1 is mounted. The positioning pin 60 and the reference pin 61 are formed by press-forming the base chassis 56, and the positioning pin 6
Reference numeral 0 is for fitting into the positioning hole 26 of the disk cartridge 1 for positioning. The reference pin 61 is in contact with the disk cartridge 1 and determines the height position of the disk cartridge 1 together with the positioning pin 60.
The L-shaped circuit board 65 is fixed to the base chassis 56 with an insulating sheet interposed therebetween. A low-height circuit mounting component 62 such as an LSI chip and a high-height circuit mounting component 63 such as a capacitor are arranged in a mixed manner. A connector 64 is fixed to the rear end. The tall circuit mounting component 63 is arranged at a position where it enters the recesses 16 and 17 when the disk cartridge 1 is mounted. The circuit board 65 has a hole for passing the above-described reference pin. A coil spring 72 that can contact the bottom surface of the lower guide plate 49 of the cartridge holder 46 and urges the cartridge holder 46 upward at the time of contact is fixed to the tip of the chassis base 56. The base chassis 56 on which the above-described members are arranged is fixed to the bottom surface of the exterior housing 41 via a vibration-proof rubber 73. In addition, anti-vibration rubber 7
Reference numeral 3 has an opening to avoid contact with a member protruding below the base chassis 56.

Regarding the operation of mounting the disk cartridge of the embodiment of the present invention described above in the drive device, FIG. 7 is a side view of the drive device showing the inserted state of the disk cartridge 1, and FIG. FIG. 8 is a plan view showing the engagement state between the cartridge 1 and the cartridge holder 46 as viewed from the lower surface of the cartridge holder. FIG. 8 is a plan view showing the engagement state between the disk cartridge 1 and the cartridge holder 46 when the shutter is open. This will be described with reference to FIG. 9 which is a plan view of FIG. 9 and FIG. 10 which is a side view of the drive device showing a mounted state of the disk cartridge 1.

As shown in FIG. 7, when the disk cartridge 1 is loaded and pushed into the cartridge holder 46, the shutter openers 52 and 53 of the cartridge holder 46
Then, the hemispherical projections 54 and 55 of the shutter openers 52 and 53 are brought into contact with the engaging portions 31 and 32 of the shutter 6 and fitted into the cutout shapes. In this operation, the shutter 6
The lock hinges 19 and 20 that have been fitted into the engagement portions 31 and 32 to lock the shutter 6 are, as shown in FIG.
Hemispherical projections 54, 5 of shutter openers 52, 53
Since the shutter 6 is displaced in the unlocking direction by the shutter 5, the shutter 6 becomes movable. When the disk cartridge 46 is further inserted, the shutter 6 moves to the position shown in FIG. 9 where the opening 9 of the case body 3 is opened by the shutter openers 52 and 53. As shown in FIGS. 8 and 9, since the shutter 6 is wide and the guided position is far away, if the shutter is pressed at one position, the shutter opening / closing operation may be hindered. . However, by arranging the two shutter openers 52 and 53 at symmetrical positions in the vicinity where the shutter 6 is guided as in the present embodiment, the twist generated at the time of moving the shutter is eliminated, and the opening and closing operation of the shutter is smoothly performed. Done. Next, the cartridge holder 46
When the cartridge holder 46 is pressed down against the urging force of the coil spring 72 of the base chassis 56, the cartridge holder 46
Is rotated downward about the rotation center. By this rotation, the disc cartridge 1 descends, the turntable 57 and the lens actuator 69 of the optical pickup 58 are inserted into the opening 9, and the tall circuit-mounted components are inserted into the recesses 16 and 17, and A part of the transfer motor is inserted. Then, the positioning pins 60 are fitted into the positioning holes 26 of the disk cartridge 1, the reference pins 61 abut on the case body 3, and the disk cartridge 1 is mounted and fixed at predetermined positions. At this time, the hub 2 a with holes of the disk 2 is connected to the clamp magnet 6 of the turntable 57.
8, the hole of the hub 2a is fitted into the fitting shaft 67 of the turntable 57, and the disc 2 is mounted on the turntable 57. In conjunction with this operation, the lock hook 45 provided inside the outer casing 41 is moved to the cartridge holder 4.
The cartridge holder 1 is locked by engaging with the lock piece 51 of No. 6. FIG. 10 shows a state in which the disk cartridge 1 has been mounted on the drive device. Thereafter, the turntable 57 is rotated based on a command from the operation button, and the optical pickup 58 is moved to a predetermined position by the transfer motor 59 to record information on the disk 2 or reproduce the recorded information.

Next, the operation of ejecting the disk cartridge 1 from the drive will be described. When the eject button 42 is operated, the rotation of the turntable 57 is stopped, and the lock hook 45 is moved to release the engagement of the cartridge holder 46 with the lock piece 51. At this time, the cartridge holder 46 rotates upward by the urging force of the coil spring 72 and stops at a position where the disk cartridge 1 can be taken out. Thereafter, the disk cartridge 1 is removed from the cartridge holder 46. In the course of this extracting operation, the shutter openers 52, 5
The shutter 6 engaged with the shutter 3 moves in a direction to close the opening 9 of the case main body 3, and the shutter 6 of the shutter 6
Covers the opening 9. At the same time, the shutter openers 52 and 53 are disengaged from the engagement portions 31 and 32 of the shutter 6, and the engagement portions 31 and 32 have the lock hinge 1.
The lock projections 20 and 22 of the shutters 9 and 20 are fitted into the shutter 6.
Is locked. The disk cartridge 1 can be taken out of the drive device with the shutter 6 locked.

As described above, when the disk cartridge according to the embodiment of the present invention is mounted on the drive device, the shutter opener provided with the drive device is inserted into the recess provided in the main body case of the disk cartridge. The drive unit can be accommodated in a mechanism member of a transfer motor and a tall circuit-mounted component, so that a thinner and smaller drive device can be realized as compared with a combination of a conventional disk cartridge and a drive device. Further, the disk cartridge is provided with two engagement portions for a shutter opener with respect to a shutter extending over both side walls of the case body, and two lock hinges for locking the shutter with the engagement portions. By arranging two shutter openers, the opening and closing operation of the shutter is performed smoothly, and it is difficult to open the shutter artificially because the shutter is double locked, so it is difficult to open the shutter accidentally and disc Less fingerprints and dust.

In the disk cartridge according to the embodiment of the present invention, a concave portion is formed in the case main body. However, if there is no problem in the strength of the case main body, a through hole may be used instead of the concave portion. Further, the disc cartridge according to the embodiment of the present invention has two shutter opener engaging portions and a shutter lock member with shutters extending over both side wall surfaces of the case body, and the drive device has two shutter openers. However, if the cartridge has a shutter spring and the shutter is urged in the direction to close the opening, the shutter lock member may be omitted. Also, for example, the shutter only needs to open and close the opening of the optical pickup portion only, and if the shutter is short enough to be guided by only one side wall surface of the case body, only one engagement portion of the shutter opener may be used. . Accordingly, the drive device may have only one shutter opener. Further, in the case where fingerprints and dust hardly adhere to the surface of the disk by performing a special treatment such as hard coating on the surface, a disk cartridge without a shutter may be used.

[0035]

As is apparent from the above description, the disk cartridge and the drive device of the present invention can accommodate the member provided with the drive device in the recess provided in the main body case of the disk cartridge. Both thinning and miniaturization can be realized, and the effect is great.

[Brief description of the drawings]

FIG. 1 is a perspective view of a disk cartridge according to an embodiment of the present invention.

FIG. 2 is a perspective view of each part constituting the disk cartridge according to the embodiment of the present invention.

FIG. 3 is an enlarged view of the inside of a concave portion 16;

FIG. 4 is a bottom perspective view showing a state in which a shutter 6 is open.

FIG. 5 is an exploded perspective view of each part constituting the drive device according to the embodiment of the present invention.

FIG. 6 is an external perspective view of the drive device according to the embodiment of the present invention.

FIG. 7 is a side view of the drive device showing an inserted state of the disk cartridge 1;

FIG. 8 is a plan view showing the engagement state between the disc cartridge 1 and the cartridge holder 46 when the shutter is closed, as viewed from the lower surface of the cartridge holder.

FIG. 9 is a plan view showing the engagement state between the disk cartridge 1 and the cartridge holder 46 when the shutter is open, as viewed from the lower surface of the cartridge holder.

FIG. 10 is a side view of the drive device showing a mounted state of the disk cartridge 1;

FIG. 11 is an external perspective view of a conventional standard cartridge.

FIG. 12A is a plan view of a drive device on which a conventional cartridge is mounted, and FIG. 12B is a side view thereof.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Disk cartridge 2 Disk 3 Case main body 4 Upper half 5 Lower half 6 Shutter 7 Storage room 9 Opening 11 Shutter guide groove 16, 17, 18 Depression 19, 21 Lock hinge 20, 22, Lock projection 24, 25 Insertion opening 26 Positioning hole 27 Guide Claw 29 Shielding Portion 30 Opening Hole 31, 32 Engaging Portion 41 Exterior Case 42 Eject Button 43 Support Shaft 44 Support Shaft Hole 45 Lock Hook 46 Cartridge Holder 49 Lower Guide Plate 50 Rotation Supporting Hole 51 Lock Piece 52, 53 Shutter openers 54, 55 Hemispheric projections 56 Chassis base 57 Turntable 58 Optical pickup 59 Transfer motor 60 Positioning pins 61 Reference pins 62, 63 Circuit mounting components 64 Connectors 65 Circuit boards 66 Openings 67 Fitting axes 68 Clamp magnets 69 Lens actuator 70 Optical base 71 Nut piece 72 Coil spring 73 Anti-vibration rubber

Claims (11)

[Claims] A storage chamber for storing a disk is provided inside a substantially rectangular case main body, and a disk is externally mounted on at least one of two case surfaces of the case main body facing the disk. A disc cartridge having an opening to be opened, and a recess or a through hole is formed in a part of a region not including the storage chamber in the two case surfaces. 2. The apparatus according to claim 1, further comprising a movable shutter that opens and closes the opening in the case main body, wherein the shutter has an engagement portion that engages with a shutter opener on a device side, and when the shutter is opened. 2. The disk cartridge according to claim 1, wherein said engaging portion is disposed inside said concave portion or through hole such that a part or whole of said shutter opener is located inside said concave portion or through hole. 3. The disk cartridge according to claim 1, wherein an insertion opening is formed in a side wall surface of the case main body so that the engaging portion of the shutter can be exposed from outside the side wall surface of the case main body. 4. A lock mechanism in a recess or a through hole of the case main body, wherein the lock mechanism engages a part of the shutter and locks the shutter when the shutter closes the opening. The disc cartridge as described. 5. The disk cartridge according to claim 4, wherein the lock mechanism locks the shutter by engaging with an engaging portion of the shutter when the shutter closes the opening. 6. The shutter has a U-shaped cross section extending from one of the side wall surfaces of the case main body to the opposing side wall surface, and the shutter has a substantially U-shape from a center line coincident with a shutter moving direction of the case main body. 4. The disk cartridge according to claim 2, further comprising a pair of engaging portions at symmetric positions. 7. A pair of locking mechanisms for locking the shutter by engaging with a pair of engagement portions of the shutter when the shutter closes the opening, respectively, inside the recess or the through hole of the case body. The disk cartridge according to claim 6. 8. A drive device on which the disk cartridge according to claim 1 is mounted, wherein when the disk cartridge is mounted at a predetermined position inside the device, a part of members provided in the device is the disk cartridge. The drive device is arranged so as to be inserted into the concave portion or the through hole. 9. A drive device equipped with the disk cartridge according to claim 2, further comprising a shutter opener that engages with an engagement portion of a shutter of the disk cartridge. 10. A drive device mounting the disk cartridge according to claim 3 or 5, further comprising a cartridge holder into which the disk cartridge can be inserted and transports the disk cartridge to a predetermined position inside the device. Wherein a shutter opener is provided at a position where the shutter can be inserted through an insertion opening formed in the disk cartridge. 11. A drive device mounting the disk cartridge according to claim 6 or 7, further comprising a cartridge holder into which the disk cartridge can be inserted and transporting the disk cartridge to a predetermined position inside the device. Wherein a pair of shutter openers engaging with the engaging portions of the shutter are provided at positions where they can be inserted through insertion holes formed in the disk cartridge.