JPH11339426A - Disc cartridge and recording and / or reproducing apparatus - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To reduce the size of a cartridge body and reliably restrict the movement of a shutter member. SOLUTION: A cartridge main body 8 accommodating a magneto-optical disk 6, a recording / reproducing opening 16 provided in the cartridge main body 8 to allow a signal recording area of the magneto-optical disk 6 to face recording / reproducing means, and And a shutter mechanism 18 having a first shutter member 21 provided to open and close the recording / reproducing opening 16. In the shutter mechanism 18, the first shutter member 21 is provided with a lock portion 50 that regulates the opening / closing operation of the first shutter member 21 with respect to the recording / reproducing opening 16.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk cartridge for accommodating a disk-shaped recording medium such as a magneto-optical disk or an optical disk, and a recording and / or reproducing apparatus for recording and / or reproducing the disk cartridge.

[0002]

2. Description of the Related Art There is known a disk cartridge in which a disk-shaped recording medium capable of recording and / or reproducing information is stored in a cartridge body. As this type of disk cartridge, for example, a disk cartridge 201 as shown in FIG. 40 includes a cartridge main body 205 configured by combining a set of upper and lower halves, and a magneto-optical disk rotatably stored in the cartridge main body 205. 206.

As shown in FIG. 40, recording / reproducing openings 207, 207 for exposing a part of a signal recording area of a magneto-optical disk 206 housed in the cartridge main body 205 to the outside, as shown in FIG. Are provided at positions facing each other. The recording / reproducing opening 207 can be opened and closed by a shutter member 208 movably provided in the cartridge main body 205.
Further, the shutter member 208 is connected to the cartridge body 205.
The recording / reproducing opening 207 is urged by a torsion coil spring (not shown) provided therein.

When the shutter member 208 is erroneously opened in the cartridge main body 205 and the recording area of the magneto-optical disk 206 is touched with a finger or the like, the signal recording surface of the magneto-optical disk 206 is reliably damaged. To prevent this, a lock portion 210 for restricting the movement operation of the shutter member 208 is provided.

[0005] As shown in FIG.
The shutter member 208 has an engagement member 211 that engages with the cartridge member 205.
It is arranged at a corner portion inside so as to be elastically displaceable. The engaging member 211 has a base end portion fixed in the cartridge main body 205 and an engaging claw 212 for engaging with the shutter member 208 at a distal end portion. As shown in FIG. 40, an engagement piece 214 that engages with the engagement claw 212 of the engagement member 211 is formed integrally with the shutter member 208. When the shutter member 208 closes the recording / reproducing opening 207, the lock member 210
The engagement claw 212 of the engagement member 211 is engaged with the engagement piece 214 of the reference numeral 08 to regulate the opening and closing operation of the shutter member 208.

[0006] The cartridge body 205 has a structure shown in FIG.
As shown in FIG. 1, a circular table entry opening 215 is provided in the center of the lower half for the entry of a turntable for rotatingly driving the magneto-optical disk 206 when loaded into a recording / reproducing apparatus. ing. On the main surface of the upper half, the cartridge main body 205 is provided with a display 219 indicating a loading direction with respect to the recording / reproducing apparatus.

The magneto-optical disk 206 housed in the cartridge main body 205 is formed in a disk shape having a center hole as shown in FIG.
mm. The magneto-optical disk 206 has a metal center hub 206 having a flange portion in a center hole.
The center hub 206a is exposed from the table entry opening 215 of the cartridge body 205. Although not shown, the magneto-optical disk 206
When loaded into the recording / reproducing apparatus, the center hub 206a is attracted by the magnet provided on the turntable on the recording / reproducing apparatus side, and is placed and held on the turntable.

When the disk cartridge 201 configured as described above is loaded into a recording / reproducing apparatus,
The operation of opening and closing the shutter member 208 will be described with reference to the drawings.

As shown in FIGS. 40 and 43, when the disk cartridge 201 is loaded in the recording / reproducing apparatus, the shutter operating member 21 disposed on the recording / reproducing apparatus side is used.
8 comes into contact with the engaging member 211 of the lock portion 210. As the disc cartridge 201 is further loaded into the recording / reproducing apparatus, the engaging member 211 of the lock unit 210 is pushed in, and the engaging member 211 is elastically displaced.

When the engaging member 211 is elastically displaced, the disk cartridge 201
The engagement state between the engagement claw 212 and the engagement piece 214 of the shutter member 208 is released, and the shutter member 208 can be moved. As the disk cartridge 201 is further loaded into the recording / reproducing device, the shutter member 208 is moved by the shutter operating member 208 to open the recording / reproducing opening 207.

As shown in FIG. 44, a disk cartridge 202 includes a cartridge body 221 composed of a set of upper and lower halves, and a phase-change type optical disk rotatably housed in the cartridge body 221. And a disk 222.

As shown in FIG. 44, the cartridge body 221 has recording / reproducing openings 224 and 224 for facing a part of the recording area of the optical disk 222 to the outside. . The recording / reproducing opening 224 can be opened and closed by a shutter member 225 movably provided in the cartridge main body 221. The shutter member 225 has a notch 228 with which the shutter operation arm 230 of the recording / reproducing device is engaged. The shutter member 225 is urged by a torsion coil spring (not shown) provided in the cartridge main body 221 in a direction to close the recording / reproducing opening 224.

The cartridge main body 221 has a structure shown in FIG.
As shown in FIG. 4, when the optical disc 222 is loaded into the recording / reproducing apparatus, an entrance opening 227 for entering a chucking means (not shown) for rotatably holding the optical disk 222 is continuous with the recording / reproducing opening 224. Each is provided. Further, the cartridge main body 221 is provided with a display 229 indicating the direction of loading the recording / reproducing apparatus.
The optical disk 222 is formed, for example, to have a diameter of 120 mm so that information signals can be written.

When the disk cartridge 202 constructed as described above is loaded in the recording / reproducing apparatus, the operation projection 230a of the shutter operation arm 230 on the recording / reproducing apparatus side.
Thereby, the shutter member 225 is moved. In the disk cartridge 202, the shutter member 225 is opened by the shutter operation arm 230, and the recording / reproducing opening 224 and the entrance opening 227 are opened.

As shown in FIG. 45, the disk cartridge 203 is composed of a cartridge main body 231 formed by combining a set of upper and lower halves and a plurality of disk substrates housed in the cartridge main body 231 and laminated. And a bonded optical disk 232.

As shown in FIG. 45, the cartridge main body 231 is provided with recording / reproducing openings 235 and 235 for exposing a part of the signal recording area of the optical disk 232 to the outside. I have. The recording / reproducing opening 235 is provided in the cartridge main body 231 as shown in FIG.
It is opened and closed by the middle arrow r ₁ direction and r ₂ shutter member 236 which are respectively movable in the direction. The shutter member 236 is urged by a torsion coil spring (not shown) provided in the cartridge main body 231 in a direction to close the recording / reproducing opening 235.
Further, the shutter member 236 has an operation protrusion 23 at the center in the movement direction on the side surface on the insertion end side with respect to the recording / reproducing device.
8 are integrally formed.

Therefore, the operating projection 238 has engaging portions 239 and 2 on both sides of the moving direction of the shutter member 236 with which the shutter operating arm 241 of the recording / reproducing apparatus is engaged.
39 are provided respectively.

As shown in FIG. 45, the cartridge main body 231 has an entry opening 237 through which a chucking means for rotatably holding the optical disk 232 enters when loaded into a recording / reproducing apparatus. Playback opening 23
5 are provided continuously. Further, the cartridge main body 231 is provided with a display 239 indicating the direction of loading the recording / reproducing apparatus. The optical disk 232 is formed, for example, to have a diameter of 120 mm so that information signals can be rewritten.

When the disk cartridge 203 constructed as described above is loaded into the recording / reproducing apparatus, the shutter member 23 is operated by the shutter operating means on the recording / reproducing apparatus side.
6 is moved in the arrow s ₁ direction or s ₂ direction in FIG. 45.
In the disk cartridge 203, the shutter member 236 is opened by the shutter operating means, and the recording / reproducing opening 235 and the entrance opening 237 are opened.

[0020]

The conventional disk cartridges 201, 202, and 203 described above are
Since the main surfaces of the cartridge main bodies 205, 221, and 231 are formed in a substantially square shape,
It has an area larger than the area occupied by the magneto-optical disk 206 and the optical disks 222 and 232 stored in the 221 and 231. That is, the conventional disk cartridges 201, 202, and 203 are particularly
222, 232 and each cartridge body 205,
Unnecessary spaces are provided between the corner portions of the disk cartridges 221 and 231 (hereinafter, only the disk cartridge 201 is described for convenience, but the same applies to the other conventional disk cartridges 202 and 203 described above. .).

The conventional disk cartridge 201
For example, in a portable recording / reproducing device loaded with
Since it is necessary to cover the entire projected area of the entire disc cartridge 201, the entire recording / reproducing apparatus becomes further larger than the disc cartridge 201 alone,
There is a disadvantage that portability is reduced. That is, the conventional disk cartridge 201 and the recording / reproducing apparatus in which the disk cartridge 201 is loaded have a problem that portability is poor.

On the other hand, the disk cartridge 201
When the magneto-optical disk 206 is taken out from the cartridge main body 205 and the magneto-optical disk 206 is handled as a single unit, there is an increased chance of dust and fingerprints adhering to the signal recording surface of the magneto-optical disk 206. Problem. In particular, a disk-shaped recording medium with a high recording density has a serious problem that it is easily affected by minute dust.

Therefore, the disk cartridge 201
In this case, it is necessary to reduce the size of the cartridge main body 205, and it is considered that the cartridge main body 205 is reduced to a substantially circular shape along the outer diameter of the magneto-optical disk 206 stored in the cartridge main body 205. However, by reducing the size of the cartridge main body 205 along the outer diameter of the magneto-optical disk 206, the disk cartridge 201 has a shutter member 20 inside the cartridge main body 205.
There is a disadvantage that the space for disposing the lock means for restricting the movement of the position 8 is eliminated.

Each of the disk cartridges 202 and 203 shown in FIGS.
5 and 236 are not provided, the shutter member 22 is driven only by the urging force of the torsion coil spring.
5, 236 keeps the recording / reproducing openings 224, 235 closed.

In this type of disc cartridge, the shutter member can be easily moved, so that the recording / reproducing opening is opened and the signal recording surface of the disc-shaped recording medium is inadvertently touched with a finger or the like. There is a risk that it will.

As a conventional optical disk, for example, a conventional CD (compact disk) has a relatively low recording density and is used only for reproducing information signals, so that the influence of stains on the signal recording surface is small.

However, a disk-shaped recording medium with a high recording density has a problem that a stain on a signal recording surface has a serious adverse effect particularly when an information signal is recorded. That is, when the information signal is recorded on the signal recording surface of the disc-shaped recording medium on which the dirt has adhered, the information cannot be recorded on the portion on which the dirt has been adhered, so that the information signal of that part is lost. Further, the disk-shaped recording medium requires a smaller area occupied by the information and a smaller spot diameter of the irradiated laser beam in order to handle more information by further increasing the recording density. Even a so-called fingerprint such as a fingerprint has a serious adverse effect.

Therefore, it is conceivable to provide a lock portion for restricting the movement of the shutter members 225, 236 in the above-described disk cartridges 202, 203. However, in the cartridge main bodies 221 and 231 of the disk cartridges 202 and 203, for example, the lock unit 210 provided in the disk
In order to dispose the cartridge, it is necessary to mold a new cartridge body, and the production cost required for producing a molding die is high and it is difficult to realize it. Also, the cartridge bodies 221 and 231 of the disk cartridges 202 and 203 are provided.
If the lock unit is provided in the disk drive, a conventional recording / reproducing apparatus suitable for the disk cartridges 202 and 203 described above cannot be used. That is, the lock portions provided on the disk cartridges 202 and 203 need to have low manufacturing costs and have compatibility with the conventional recording / reproducing apparatus.

Accordingly, the present invention provides a disk cartridge capable of reducing the size of the cartridge body and reliably restricting the movement of the shutter member, and operating the shutter member and the opening / closing restricting means of the disk cartridge. It is an object of the present invention to provide a recording and / or reproducing apparatus capable of performing the following.

[0030]

In order to achieve the above-mentioned object, a disk cartridge according to the present invention comprises a shutter mechanism having a shutter member provided to open and close a recording / reproducing opening of a cartridge body. And
The shutter mechanism has an opening / closing restricting means for restricting the opening / closing operation of the shutter member with respect to the recording / reproducing opening in the shutter member.

In the disk cartridge constructed as described above, the shutter member cannot be moved by the opening / closing restricting means with the shutter member closing the recording / reproducing opening. In this disk cartridge, since the opening / closing restricting means is provided on the shutter member, unnecessary space in the cartridge body is sufficiently reduced.

Further, the recording and / or reproducing apparatus according to the present invention includes a shutter opening / closing means for opening / closing a shutter mechanism of a disk cartridge having a shutter mechanism having a shutter member and opening / closing regulating means for regulating movement of the shutter member. Prepare. The shutter opening / closing means has a regulation release means for releasing the regulation state of the shutter member by the opening / closing regulation member.

In the recording and / or reproducing apparatus configured as described above, the restricted state of the shutter member is released by the shutter opening / closing means, and the shutter member is opened / closed.

[0034]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a specific embodiment of the present invention will be described with reference to the accompanying drawings. As shown in FIG.
Includes a magneto-optical disk 6 as an information recording medium, and a cartridge body 8 for accommodating the magneto-optical disk 6 therein.

The magneto-optical disk 6 has a diameter of, for example, 120 m.
m, and a central hole is formed. In the center hole of the magneto-optical disk 6, a metal center hub is provided.

The cartridge main body 8 is formed in a generally thin box shape by abutting and joining an upper half 11 and a lower half 12 of a substantially circular shallow dish shape formed of, for example, a resin material.

As shown in FIGS. 2, 3 and 4, the cartridge main body 8 has a table entry opening through which the turntable 10 on the recording / reproducing apparatus rotating the magneto-optical disc 6 enters the cartridge main body 8. It has a unit 15 and a recording / reproducing opening 16 for allowing a part of the signal recording area of the magneto-optical disk 6 to face recording / reproducing means on the recording / reproducing apparatus side.

The table entry opening 15 is provided with the lower half 1
2 is formed in a substantially circular shape at the center of the main surface. As shown in FIG. 4, when the disc cartridge 1 is loaded in the recording / reproducing apparatus, the turntable 10 on the recording / reproducing apparatus side is used.
Is inserted into the cartridge body 8 from the table entry opening 15. In the disk cartridge 1, the positioning portion 10a protruding from the turntable 10 is inserted into the center hole of the magneto-optical disk 6, and the center of the magneto-optical disk 6 is moved by the magnet 10b disposed at the tip of the positioning portion 10a. The hub 6a is held by suction. The magneto-optical disk 6 is mounted on the mounting surface 10c of the turntable 10.
Placed on top.

The recording / reproducing opening 16 is formed in the lower half 12
The optical disk 6 is formed in the radial direction of the magneto-optical disk 6, and has one end connected to the table entry opening 15. The other end of the recording / reproducing opening 16 is formed to be open at the outer peripheral portion of the lower half 12.

The disc cartridge 1 has the recording / reproducing opening 16 and the table entry opening 15.
Is provided with a shutter mechanism 18 for opening and closing each of them.

The shutter mechanism 18 is shown in FIGS.
As shown in FIG. 3, a first shutter member 21 for opening and closing the recording / reproducing opening 16, a second shutter member 22 for opening and closing the table entry opening 15, and a first shutter member 21 and a second shutter member 21. It has a connecting member 23 for interlocking the second shutter member 22 and a torsion coil spring 24 for urging the connecting member 23 in the rotating direction.

The first shutter member 21 is connected to the lower half 12
The outward side, is arranged to be movable in FIGS. 2 and 3 in the arrow a ₁ direction and a ₂ directions. The first shutter member 21 is formed of, for example, a metal material.
As shown in FIG. 1, a first sliding portion 2 having a substantially C-shaped flat plate shape is provided.
6 and a substantially rectangular flat plate-shaped second sliding portion 27 integrally connected to one end of the first sliding portion 26.

As shown in FIGS. 2 and 3, the first sliding portion 26 is provided with a notch 26a for table entry for the turntable 10 on the recording / reproducing apparatus side to enter the cartridge body 8. Have been. In the first sliding portion 26,
As shown in FIG. 3, a slide guide piece 28 slidably engaged with the inner peripheral portion of the table entry opening 15 of the cartridge body 8 is formed over the outer peripheral portion. Also, the first
On the main surface of the sliding portion 26, a slot-shaped turning operation hole 29 for engaging a shutter driving pin (not shown) of the recording / reproducing apparatus side for turning the first shutter member 21 is formed. Have been.

Further, the first shutter member 21 has a structure shown in FIG.
As shown in FIG. 5 and at the tip of the second sliding portion 27,
A guide piece 30 that engages with a guide groove 31 provided in the upper half 11 is formed integrally. A guide claw 30 a is formed at the tip of the guide piece 30, and the guide claw 30 a is movably inserted into the guide groove 31.

The second shutter member 22 is connected to the lower half 12
Inward side of, and is arranged to be movable in FIGS. 2 and 3 in the arrow b ₁ direction and the b ₂ directions. As shown in FIGS. 2, 3, and 5, the second shutter member 22 is formed in a flat plate shape from, for example, a synthetic resin or a metal material, and is provided on the inner bottom surface of the lower half 12. It is slidably disposed in the provided substantially fan-shaped guide recess 33. As shown in FIGS. 5 and 6, the second shutter member 22 integrally has, at one end on one main surface, a rotation support protrusion 34 that is rotatably supported by the lower half 12. Is formed. The second shutter member 22 is configured such that the rotation support projection 34 is
3 and 5 in the direction of arrow b ₁ and b in FIG.
It is supported rotatably in _two directions. The second shutter member 22 has a connecting protrusion 36 connected to the connecting member 23 on the surface facing the connecting member 23.

As shown in FIGS. 5 and 6, the connecting member 23 is formed in a flat plate shape having a substantially C-shape, and the turntable 10 on the recording / reproducing apparatus side is provided inside the cartridge body 8 at the inner peripheral portion. Notch 23 for table entry to enter
a is formed. The connecting member 23 includes the lower half 12
Guide member 37 slidably engaged with a guide portion 15a formed over the inner periphery of the table entry opening 15 of FIG.
Are formed integrally over the outer peripheral portion on the surface side facing the second shutter member 22. Therefore, the connecting member 2
Reference numeral 3 denotes a guide portion of the lower half 12 when the sliding guide piece 37 is
Engaged in 5a, is slidably supported in FIG arrow a ₁ direction and the arrow a ₂ direction.

The connecting member 23 is provided with a spring mounting recess 38 at one end of the torsion coil spring 24 at a substantially central portion in the outer peripheral direction. In addition, lower half 12
A spring attachment portion 39 to which the other end of the torsion coil spring 24 is attached is formed on the inner bottom surface portion, and is fixed to the spring attachment portion 39 via an attachment screw 40.

Further, as shown in FIG. 6, a connecting hole 41 for connecting to the second shutter member 22 is provided on a main surface of the connecting member 23 facing the second shutter member 22. I have. The connection member 23 is interlocked with the second shutter member 22 when the connection protrusion 36 of the second shutter member 22 is inserted into the connection hole 41. Also, the connecting member 23
As shown in FIG. 6, a first shutter member 2
The rotation operation hole 4 is located at a position facing the rotation operation hole 29
2 are provided.

One end of the torsion coil spring 24 is connected to the connecting member 2.
The other end is fixed via a mounting screw 40 to a spring mounting recess 39 formed on the bottom surface of the lower half 12. The center of the torsion coil spring 24 is movable, and the torsion coil spring 24 is connected to the connecting member 2 by elastic force.
3 is biased to rotate in Figure 5 an arrow a ₂ direction. Therefore, the shutter mechanism 18 uses the elastic force of the torsion coil spring 24 to move the first and second shutter members 2.
Reference numerals 1 and 22 respectively close the table entry opening 15 and the recording / reproducing opening 16.

The connecting member 23 has a rotating operation hole 42 corresponding to the outer shape of the first sliding portion 26 of the first shutter member 21 and a rotating operation hole of the first shutter member 21. The main surface is joined and fixed to the first shutter member 21 with an adhesive or the like in a state in which the sliding guide piece 37 is slidably engaged with the guide portion 36 of the lower half 11 while being opposed to the sliding member 29. .

The disk cartridge 1 is disposed in the cartridge body 8 between the second shutter member 22 of the shutter mechanism 18 and the signal recording surface of the magneto-optical disk 6.
A partition sheet 48 for preventing damage to the magneto-optical disk 6 is provided.

As shown in FIGS. 5 and 6, the partition sheet 48 is formed in a disk shape by, for example, a non-woven fabric or the like. The table entry opening 15 and the recording / reproducing opening formed in the lower half 12 are formed. Notches 48a and 48b each having a shape corresponding to 16 are formed continuously from the outer peripheral portion to the central portion.

Notches 48a, 4 of partition sheet 48
As shown in FIG. 3, the opening 8b is slightly smaller than the opening of the recording / reproducing opening 16 of the cartridge main body 8 and the table entry notch 26a of the first shutter member 21. Therefore, the partition sheet 48
Is, as shown in FIG. 3, a table entry notch 26a.
The projections slightly protrude inside the recording / reproducing opening 16 to reliably prevent dust adhering to the first and second shutter members 21 and 22 from entering the cartridge body 8. .

Further, on the outer peripheral portion of the partition sheet 48,
As shown in FIGS. 5 and 6, a substantially rectangular regulating projection 48c for regulating the movement of the partition sheet 48 is integrally formed. The partition sheet 48 includes the regulating projection 4.
8c is an engagement recess 4 formed in the inner peripheral portion of the lower half 12.
9 is disposed at a predetermined position in a state in which the movement is restricted by being engaged with 9.

Further, since the partition sheet 48 is disposed so as to overlap with the second shutter member 22,
The second shutter member 22 is also prevented from falling off from the lower half 12.

As described above, the shutter mechanism 18 can be easily assembled simply by placing the second shutter member 22 and the partition sheet 48 on the lower half 12 at predetermined positions. Improvements are being made.

The operation of the shutter mechanism 18 for opening and closing the recording / reproducing opening 16 and the table entry opening 15 with respect to the disk cartridge 1 configured as described above will be described with reference to the drawings.

First, as shown in FIG. 2, a shutter drive pin of the recording / reproducing device side is inserted into a rotation operation hole 29 of the first shutter member 21 to reduce the elastic force of the torsion coil spring 24 as shown in FIG. the first shutter member 21 is rotated in arrow in FIG a ₁ direction and anti. Shutter mechanism 18
Rotates the connecting member 23 as the first shutter member 21 rotates, and rotates the second shutter member 22 as the connecting member 23 rotates.

The shutter mechanism 18 is, as shown in FIG.
With opening the table entry opening portion 15 by the second shutter member 22 is rotated in the arrow b ₁ direction,
The first shutter member 21 opens the recording and reproducing opening 16 by rotating in the arrow a ₁ direction. The shutter mechanism 18, as shown in FIG. 2, by the biasing force of the torsion coil spring 24, with the second shutter member 22 is rotated in the arrow b ₂ direction table entry opening portion 15 is closed, the first recording reproducing apertures 16 the shutter member 21 is rotated in the arrow a ₂ direction is closed.

As shown in FIG. 7, the cartridge body 8 has a lock portion 50 for restricting the movement of the shutter mechanism 18. The lock section 50 according to the present invention is shown in FIG.
As shown in FIG. 5, a regulating member 51 for regulating the movement of the first shutter member 21, an elastic member 52 for urging the regulating member 51 in a direction to engage with the cartridge body 8, a regulating member 51 and an elastic member And a storage section 53 for storing the storage section 52.

As shown in FIG. 7, the regulating member 51 has a substantially L-shaped cross section, and has an engaging claw 55 formed at one end thereof in a substantially quarter-circular shape. As shown in FIG. 7, the engaging claw 55 is inserted through an opening 54 provided in the first shutter member 21 and engaged with the cartridge body 8.

As shown in FIG. 7, the elastic member 52 is
Of is disposed on the guide piece 30 of the shutter member 21, an attaching portion 56 which is regulating member 51 is mounted, the restricting member 51 fixed to the mounting portion 56 7 and in FIG. 8 in the arrow c ₁ direction It has a biasing elastic displacement portion 57 and a support portion 58 that supports the mounting portion 56.

One side surface of the regulating member 51 is joined and fixed to the mounting portion 56 with the engaging claw 55 of the regulating member 51 facing the recording / reproducing opening 16 side of the cartridge body 8. The elastic displacement portion 57 is formed to have a substantially S-shaped cross section having bent portions 57a and 57b, and the length direction is disposed substantially parallel to the moving direction of the first shutter member 21.

The elastic displacement portion 57 has a mounting portion 56 at the base end.
Are integrally formed. The elastic displacement portion 57 includes the bent portion 5
7 a is in contact with the first shutter member 21, and the front end thereof has a notch 5 provided in the first shutter member 21.
9 protrudes outward. This elastic displacement portion 57
The bent portion 57b on the tip side is moved in the direction of arrow d and arrow e in FIG.
It is formed so that it is satisfactorily elastically displaced when pressed from any of the directions.

As shown in FIG. 7, the support portion 58 is formed in a substantially L-shape, and a mounting portion 56 is integrally formed at the tip. The support portion 58 has a base end fixed to the first shutter member 21 and the storage portion 53 is formed in a substantially rectangular box shape as shown in FIG. Are formed integrally with the guide piece 30. As shown in FIGS. 7 and 9, the storage portion 53 has a notch portion 59 that opens at one end of the first shutter member 21 in the moving direction, in parallel with the longitudinal direction of the elastic displacement portion 58. Is formed.

The shutter mechanism 18 constructed as described above
The operation of restricting the movement of the first and second shutter members 21 and 22 and the operation of releasing the restriction will be described with reference to the drawings.

First, as shown in FIGS. 7 and 8, the locking portion 50 is configured such that the engaging claw 55 of the regulating member 51 is projected from the opening portion 54 into the recording / reproducing opening portion 16 by the elastic member 52 to perform recording / reproducing. Is engaged with the inner peripheral wall of the opening 16 for
When the first shutter member 21 closes the recording / reproducing opening 16, the movement of the first shutter member 21 is restricted.

As shown in FIG. 11, the disc cartridge 1 is loaded into the insertion port 61a of the recording / reproducing apparatus 61 from the first shutter member 21 provided with the lock portion 50. As shown in FIG. 12, the recording / reproducing apparatus in which the disc cartridge 1 is loaded has a shutter operation for operating the lock section 50 of the shutter mechanism 18 and moving the first shutter member 21 in the cartridge loading section. A mechanism 62 is provided. As shown in FIG. 12, the shutter operation mechanism 62 includes a shutter operation arm 63 that moves and operates the first shutter member 21.
When, and a compression coil spring 64 for urging the shutter operating arm 63 in FIG. 12 to the direction of arrow f _2, a stopper pin 65 for restricting the rotational position of the shutter operating arm 63.

The shutter operation arm 63 is formed substantially in the shape of an ellipse as a whole, and has its base end rotatably supported on a rotation support shaft 66 in the directions of arrows f ₁ and f ₂ in FIG. .
As shown in FIG. 14, an operation protrusion 67 for operating the lock unit 50 of the shutter mechanism 18 is provided at a corner of the shutter operation arm 63 facing the lock unit 50 side of the first shutter member 21. Are integrally formed. The operation protrusion 67 is formed to have a thickness slightly smaller than the opening dimension of the cutout portion 60 formed in the storage portion 53 of the first shutter member 21, and comes into contact with the first shutter member 21. The contact surface 68 is formed integrally. The compression coil spring 64 has one end fixed and the other end attached to the shutter operation arm 63. The compression coil spring 64 urges to rotate the shutter operating arm 63 in FIG. 12 in the direction of arrow f ₂ by the elastic force.
The stopper pin 65 contacts the side surface of the shutter operation arm 63 to regulate the rotation position, thereby retreating the shutter operation arm 63 to a predetermined stop position.

As shown in FIG. 12, when the disc cartridge 1 is loaded into the recording / reproducing apparatus 61, the operation protrusion 67 of the shutter operation arm 63 of the shutter operation mechanism 62 on the recording / reproducing apparatus 61 side moves to the first position. It comes into contact with the shutter member 21. As shown in FIGS. 9 and 10, the lock portion 50 of the shutter mechanism 18 is configured such that the operation protrusion 67 of the shutter operation arm 63 presses the elastic displacement portion 58 of the elastic member 52, and 55 and the cartridge body 8 are released from engagement, and the first shutter member 21
Can be moved.

Then, the disk cartridge 1 is
As shown in 3, in accordance with further loaded with respect to the cartridge loading section, the first shutter member 21 by the shutter operating arm 63 is moved in the arrow a ₁ direction in FIG. 13, a recording reproducing apertures 16 open State.

When the disc cartridge 1 is taken out of the recording / reproducing apparatus 61, the shutter operating arm 63 is separated from the first shutter member 21 by the urging force of the compression coil spring 64. Is returned to the predetermined evacuation position. At this time,
The first shutter member 21 closes the recording reproducing apertures 16 and return operation in a ₂ direction.

The lock member 50 restricts the movement of the first shutter member 21 when the regulating member 51 is moved by the elastic member 52 and the engaging claw 55 of the regulating member 51 is engaged with the cartridge body 8. Is done. Therefore, the disc cartridge 1 removed from the recording / reproducing device 61
Is immovable with the first shutter member 21 closing the recording / reproducing opening 16.

By the way, as shown in FIG. 1, the cartridge main body 8 of the disk cartridge 1 is provided with a display 10 on the main surface of the upper half 11 to indicate a loading direction for the recording / reproducing apparatus. In addition, recesses 8a and 8b for notching by a cartridge holding mechanism on the recording / reproducing apparatus side are formed in the side surface of the cartridge body 8 by notches.

Further, as shown in FIGS. 1 and 2, the cartridge body 8 is provided with an erroneous recording preventing member 13 for preventing an information signal recorded on the magneto-optical disk 6 from being erased by mistake. It is movably disposed in a guide groove provided in the main body 8. The lower half 12 of the cartridge body 8 is provided with positioning holes 14a and 14b for positioning at the cartridge loading position in the recording / reproducing apparatus on both sides in the width direction.

As shown in FIG. 1, the cartridge body 8 of the disk cartridge 1 has a label display section 17 for displaying the recorded contents of the magneto-optical disk 6 and the like. As shown in FIG. 1, the label display section 17 protrudes from the upper half 11 and has a print recording medium 17a on which print information is recorded, and a storage section 17b for storing the print recording medium 17a. doing. The print recording medium 17a is
It has a thermosensitive recording layer and a protective layer for protecting the thermosensitive recording layer.

When the disc cartridge 1 is loaded into the recording / reproducing apparatus, the print recording medium 17a is
The print information is printed by the print head in the print recording area after being pulled out from the print recording area b. Further, the print recording medium 17a is provided at one end with respect to the storage section 17b.
An insertion / removal operation piece 17c for inserting / removing a is provided with both ends protruding in the width direction of the print recording medium. Since the insertion / removal operation piece 17c protrudes from the storage section 17b, the print recording medium 17a stored in the storage section 17b can be easily inserted / removed via the insertion / removal operation piece 17c. Although not shown, when the disc cartridge 1 is loaded in the recording / reproducing apparatus, the storage unit 1 of the cartridge main body 8 is inserted.
Label operating means for inserting and removing the print recording medium 17a with respect to 7b is provided.

In the storage section 17b, a display window plate 17d made of a transparent resin material is disposed at an opening formed at a position corresponding to a print area of the stored print recording medium 17a. I have. Therefore, the print recording medium 17a stored in the storage section 17b can be viewed through the display window plate 17d. Further, on the main surface of the label display section 17, for example, a display sheet 1 made of paper is provided.
7e is attached as needed.

Further, as shown in FIG. 1, the cartridge main body 8 of the disk cartridge 1 has a specification display section 19 for displaying the specification of the disk cartridge 1 and the like.
As shown in FIGS. 1, 2, and 5, the specification display section 19 includes a rotating member 19a that is rotated by a driving pin 20 or a finger or the like on the recording / reproducing apparatus side, and is wound by the rotating member 19a. And a display window member 19d provided with a display or the like indicated by the indicator 19c, which indicates a specification at a position moved by the slip sheet 19b.

As described above, the disc cartridge 1
According to the lock portion 50 provided in the shutter mechanism 18, since the configuration is simplified and the space required for disposing is relatively small, the cartridge main body is disposed on the first shutter member 21. 8 can be reduced in size.

Next, another shutter mechanism having another lock portion will be described with reference to the drawings. First, as shown in FIGS. 15 and 16, the disk cartridge 2 provided with another shutter mechanism includes an optical disk 7 in a cartridge main body 71 formed by combining a set of upper and lower halves.
0 is stored. As the optical disk 70, for example, a phase change type optical disk is used, and an information signal can be written.

At the center of the cartridge main body 71, an opening 72 for entry of a turntable and a disc holding means on the recording / reproducing apparatus side is formed to face each other. Further, in the cartridge main body 71, recording / reproducing openings 73 through which recording / reproducing means on the recording / reproducing apparatus side enter are formed to face each other in the radial direction of the optical disk 70. The recording / reproducing opening 73 is formed continuously with the entrance opening 72, as shown in FIG.

The cartridge body 71 is provided with a shutter mechanism 74 for opening and closing the entrance opening 72 and the recording / reproducing opening 73. The shutter mechanism 74 includes a shutter member 75 that opens and closes the entrance opening 72 and the recording / reproducing opening 73.
Torsion coil spring 76 for urging the second and 73 in the closing direction
And

The shutter member 75 has opposing shutter plates 75a, 75a for opening and closing the entrance opening 72 and the recording / reproducing opening 73, and a connecting piece 75b for connecting one end of the shutter plates 75a, 75a. Are formed in a substantially U-shaped cross section. The shutter member 75 has a guide recess provided on the main surface of the cartridge main body 71, and a shutter plate 75a is movably disposed therein.
Is held on the cartridge body 71 movably in the width direction of the cartridge body 71. One end of a torsion coil spring 76 is attached to the shutter member 75.

The shutter mechanism 74 has a connecting piece 75
A lock portion 80 for restricting the movement of the shutter member 75 is provided on the inner side of b. This lock section 80 is provided in FIG.
As shown in FIG. 5 and FIG. 16, when loaded into the recording / reproducing device, the shutter operation arm 93 of the recording / reproducing device is operated.

As shown in FIGS. 17 and 18, the lock portion 80 has an engagement piece 81 which engages with the cartridge body 71.
When has an operating member 82 for moving operating the engaging piece 81, and a torsion coil spring 83 for biasing so as to rotate the operating member 82 in FIG. 17 the arrow g ₁ direction.

The engaging piece 81 has an engaging claw 85 formed at the tip thereof for engaging with the cartridge body 71. The operation member 82 has a substantially central portion in the longitudinal direction via a support shaft 86 provided inside the shutter member 75, as shown in FIGS.
And it is rotatably supported on the middle arrow g ₁ direction and g ₂ directions. At one end of the operating member 82, an engagement piece 81 is attached to a support shaft 87.
It is rotatably supported via. The operation member 8
At the other end of 2, a contact portion 88 with which the shutter operation arm 93 of the recording / reproducing device contacts is formed.

The shutter 75 has a connecting piece 75
A sliding piece that slides on the front side surface of the cartridge main body 71 is formed at a position facing b. This sliding piece has
An opening 90 is formed through which the engaging claw 85 of the engaging piece 81 of the lock portion 80 is inserted when engaging with the cartridge main body 71. In addition, the cartridge body 71 includes
As shown in FIGS. 6, 17 and 18, the locking portion 80 is located at a predetermined position on the front side surface adjacent to the recording / reproducing opening 73.
An engagement groove 84 is formed in which the engagement claw 85 of the engagement piece 81 is engaged.

FIGS. 17 and 18 show the shutter member 75.
As shown in FIG. 7, a substantially V-shaped cutout 89 for the shutter operating arm 93 of the recording / reproducing apparatus to enter and engage with one end of the connecting piece 75b in the moving direction.
a, 75a.

FIGS. 17 and 18 show the torsion coil spring 83.
As shown in (1), one end is in contact with one side surface of the operation member 82, and the other end is in contact with the inner peripheral surface of the shutter member 75. The torsion coil spring 83 uses an elastic force to
By urging the operating member 82 in FIG. 18 in the arrow g ₁ direction, the engaging claw 85 of the engaging piece 81 the cartridge body 71
In the engagement groove 84.

The shutter operation arm 93 provided in the recording / reproducing apparatus in which the above-described disk cartridge 2 is loaded is
As shown in FIGS. 19 and 20, the shutter member 75 is moved on the main surface of the distal end portion, and the lock portion 80 is moved.
An operation protrusion 94 for operating the operation member 82 is integrally formed.

As shown in FIGS. 19 and 20, when the shutter member 75 is opened and closed, the shutter operation arm 93 moves the operation protrusion 94 to the arrows j ₁ and j _{2 in} FIGS. 19 and 20.
By moving in the direction and the directions of the arrows k ₁ and k ₂ ,
The restriction by the lock portion 80 is released, and the shutter member 75 is opened.

The shutter mechanism 74 configured as described above
The operation of restricting the movement of the shutter member 75 and the operation of releasing the restriction will be described with reference to the drawings.

The disk cartridge 2 shown in FIGS.
As shown in FIGS. 7 and 18, with the shutter member 75 closing the recording / reproducing opening 73, the engaging claw 85 of the engaging piece 81 is engaged with the engaging groove 84 of the cartridge main body 71, The movement of the shutter member 75 is restricted. The lock portion 80 is operated by the operating member 82 when the engaging claw 85 of the engaging piece 81 is engaged with the cartridge body 71.
The contact portion 88 of the shutter member 75 is located inside the cutout portion 89 of the shutter member 75.

[0095] disc cartridge 2, when it is loaded on the recording and reproducing apparatus, as shown in FIGS. 19 and 20, the shutter operating arm 93 of the recording and reproducing apparatus side of the cartridge body 71 is moved in the arrow j ₁ direction As a result, the operation protrusion 94 of the shutter operation arm 93 is
5 is inserted into the notch 89.

The lock section 80 has a shutter operation arm 93
The operation protrusion 94 of FIG.
By depressing the middle arrow j ₁ direction, the operation member 82 is rotated in the arrow g ₂ directions. The lock unit 80
By operating member 82 is rotated in the arrow g ₂ direction,
The engagement state between the engagement claw 85 of the engagement piece 81 and the engagement groove 84 is released, and the shutter member 75 is movable.

Next, when the shutter operation arm 93 moves in the direction of arrow k _{1 in} FIG. 20, the operation projection 94 contacts the inner wall of the notch 89 of the shutter member 75, and move member 75 in the arrow k ₁ direction. Therefore, the shutter operation arm 93 moves the shutter member 75 to open the recording / reproducing opening 73 and the entrance opening 72.

When the disk cartridge 2 is taken out of the recording / reproducing apparatus, the shutter operation arm 93
There are moves in the arrow k ₂ direction in FIG. 20, the shutter member 75
There closing the recording reproducing apertures 73 and entry opening portion 72 is moved in the arrow k ₂ direction by the biasing force of the torsion coil spring 76. Then, the shutter mechanism 74, the shutter member 7 shutter operating arm 93 is moved in the arrow j ₂ direction
By separating from 5, the operation member 82 of the lock portion 80, is rotated in the arrow g ₁ direction by the elastic force of the torsion coil spring 83, the engaging claw 85 of the engagement piece 81 engaging groove 84
Is engaged. Therefore, the disk cartridge 2
Is taken out of the recording / reproducing apparatus in a state where the movement of the shutter member 75 is restricted by the lock section 80.

As described above, according to the lock portion 80 provided in the shutter mechanism 74, for example, only the engaging groove 84 is formed in the cartridge main body 221 of the above-described conventional disk cartridge 202, and the cartridge main body 22
By replacing and assembling only the shutter member 75 provided with the lock portion 80 in 1, it is relatively easy to arrange the lock portion 80 in the conventional disk cartridge 202.

According to the lock portion 80, the operation of the lock portion 80 and the operation of the shutter member 75 can be performed by the shutter opening / closing means provided in the conventional recording / reproducing apparatus. Compatibility can be reliably maintained.

Still another shutter mechanism having still another lock portion will be described with reference to the drawings. First, FIG.
As shown in FIG. 1 and FIG. 22, the optical disc 100 is housed in a cartridge main body 101 constituted by combining a set of upper and lower halves in a disc cartridge 3 provided with another shutter mechanism. Optical disk 1
For example, a laminated optical disk 00 is formed by laminating a plurality of disk substrates.

At the center of the cartridge body 101, an opening 102 for the turntable and the disc holding means on the recording / reproducing apparatus side are formed so as to face each other. Further, in the cartridge main body 101, recording / reproducing openings 103 through which recording / reproducing means on the recording / reproducing apparatus side enter are formed facing each other in the radial direction of the optical disc 100. The recording / reproducing opening 103 is formed continuously with the entrance opening 102 as shown in FIG.

The cartridge main body 101 is provided with a shutter mechanism 104 for opening and closing the entrance opening 102 and the recording / reproducing opening 103. Shutter mechanism 1
Reference numeral 04 denotes the entry opening 102 and the recording / reproduction opening 10.
3 and a torsion coil spring (not shown) that urges the shutter member 105 in a direction to close the openings 102 and 103.

The shutter member 105 is connected to the entrance opening 10.
2 and opposing shutter plates 105a, 105a for opening and closing the recording / reproducing opening 103;
a and a connecting piece 105b for connecting one end of 105a, and has a substantially U-shaped cross section. Shutter member 10
A shutter plate 105a is movably disposed in a guide recess provided on the main surface of the cartridge main body 101, and the leading end of the shutter plate 105a has a width on the cartridge main body 101 that is equal to the width of the cartridge main body 101. It is movably held on both sides in the direction.

The shutter mechanism 104 has a connecting piece 1
A lock portion 110 for restricting the movement of the shutter member 105 is provided on the inner side of 05b. This lock part 11
As shown in FIG. 22, 0 is operated by the shutter operation arm 108 on the recording / reproducing apparatus side when loaded in the recording / reproducing apparatus. An operation protrusion 109 for operating the shutter mechanism 104 is provided at the tip of the shutter operation arm 108.
Is provided.

As shown in FIG. 23, the lock section 110
An engagement member 111 that engages with the cartridge body 101;
An operation member 112 for moving the engagement member 111,
An elastic member 113 for urging the operating member 112 to move toward the cartridge body 101;
And a support base 114 for supporting the elastic member 113, and a storage case 115 for storing the engaging member 111, the operating member 112, the elastic member 113, and the support base 114 therein.

As shown in FIGS. 23 and 24, the engaging member 111 is formed in a substantially U-shape, and an engaging portion 116 for engaging with the cartridge main body 101 is formed at a substantially central portion. . The engaging member 111 has a shaft 11
7 are integrally formed. The cartridge body 1
23, as shown in FIG. 23, a notch groove 118 is formed in the center of the side surface on the front end side where the shutter member 105 is provided, with which the engaging portion 116 of the engaging member 111 engages. .

As shown in FIGS. 23 and 24, the operation member 112 is formed in a substantially rectangular shape, and an arc-shaped support concave portion 120 is formed at the center in the longitudinal direction. The operation member 112 is combined so that the shaft portion 117 of the engagement member 111 abuts on the support recess 120 as shown in FIG. The operating member 112 has operating portions 121 that are pushed in at both ends in the longitudinal direction. The operating portions 121 are formed integrally with the operating members 121. Are formed respectively.

As shown in FIGS. 23 and 24, the elastic member 113 is formed of, for example, a metal plate having elasticity, and elastic displacement portions 124 for urging the operation portion 121 of the operation member 112 are provided at both ends. Each is formed.

The elastic member 113 is integrally formed with a plurality of support pieces 125 supported by the support base 114. Each support piece 125 is provided with an engagement hole 125a for engaging with the support base 114. Elastic member 1
An elastic displacement piece 127 for urging the engagement member 111 in the direction toward the cartridge body 101 is integrally formed on the cartridge body 13.

As shown in FIGS. 23 and 24, the support base 114 is formed integrally with the connecting piece 105b of the shutter member 105. The support base 114 has a substantially central portion,
The opening 12 through which the engaging portion 116 of the engaging member 111 is inserted
8 are formed.

The support base 114 is integrally formed with engaging projections 129 for engaging with the engaging holes 125a of the elastic member 113, and positions the assembled elastic member 113 at a predetermined position. The support base 114 is integrally formed with an engagement claw 130 that engages with the storage case 115.

As shown in FIGS. 23 and 25, the storage case 115 is formed in a substantially rectangular box shape having a storage portion 132 therein. An engagement recess 133 with which the engagement claw 122 of the operation member 112 engages is formed on the inner peripheral wall of the storage case 115. In addition, an engagement recess 134 that slidably engages with the engagement claw 130 of the support base 114 is formed on the inner peripheral wall of the storage case 115. Therefore, the storage case 115 is movably supported on the shutter member 105 on both sides in the width direction of the cartridge body 101, and is positioned at a predetermined position by the urging force of the elastic member 113.

The shutter mechanism 10 constructed as described above
The operation of restricting the movement of the shutter member 105 and the operation of releasing the restriction of the fourth lock portion 110 will be described with reference to the drawings.

The disk cartridge 3 shown in FIGS.
7, as shown in FIGS. 28 and 29, the shutter member 10
In a state where the recording / reproducing opening 103 is closed, the engaging portion 116 of the engaging member 111 is engaged with the notch groove 118 of the cartridge main body 101, and the movement of the shutter member 105 is restricted.

[0116] disc cartridge 3, when it is loaded on the recording and reproducing apparatus, as shown in FIGS. 30 and 31, recording-reproduction apparatus of the shutter operating arm 93 in FIG. 30 arrow m ₁ direction with respect to the cartridge body 101 Or arrow m ₂
Moving the shutter operation arm 108
Of the locking case 110 of the lock portion 110
Abut on the sides.

The lock section 110 is provided with the shutter operation arm 1
The operation member 112 is moved by moving the storage case 115 in the direction of the arrow m ₁ or the direction of the arrow m ₂ against the urging force of the elastic member 113 by the operation projection 109 of 08. When the operation member 112 is moved, the lock portion 110 moves the shaft portion 117 of the engagement member 111 to the operation member 1.
12 along the longitudinal direction of the engagement member 1
The eleventh shaft 117 moves from inside the support recess 120. For this reason, the engaging member 111 is moved in a direction away from the cartridge main body 101 side, and the cartridge main body 10 is moved.
The engagement state between the first notch groove 118 and the engagement portion 116 is released. Therefore, the shutter member 105 is movable with respect to the cartridge main body 101.

Then, the shutter operation arm 108 moves the shutter member 105 as the operation protrusion 109 further moves the storage case 115 to open the recording / reproducing opening 103 and the entrance opening 102.

When the disk cartridge 3 is taken out of the recording / reproducing apparatus, the shutter operation arm 10
8 is moved in the arrow m ₂ direction or arrow m ₁ direction is the reverse direction, it is moved by the biasing force of the coil spring twists shutter member 105 closes the recording reproducing apertures 103 and enters opening 102.

When the shutter operation arm 108 moves away from the shutter member 105, the operation member 112 of the lock portion 110 is moved by the elastic force of the elastic member 113.
The shaft portion 117 of the engaging member 111 moves into the support concave portion 120 of the cartridge main body 101, so that the engaging portion 116 of the engaging member 111 is engaged with the notch groove 118 of the cartridge main body 101. Therefore, the disk cartridge 3 is taken out of the recording / reproducing apparatus in a state where the movement of the shutter member 105 is restricted by the lock portion 110.

As described above, according to the lock portion 110 provided in the shutter mechanism 104, for example, only the notch groove 118 is formed in the cartridge body 231 of the conventional disk cartridge 203, and the lock portion 11 is formed.
By replacing only the shutter member 105 provided with “0” and assembling it with the cartridge main body 231, it is relatively easy to dispose the lock portion 110 on the conventional disk cartridge 203.

Further, according to the lock section 110, since the lock section 110 can be operated by the shutter opening / closing means provided in the conventional recording / reproducing apparatus, it is possible to reliably maintain compatibility with other disk cartridges.

Further, according to the lock portion 110, the lock portion 110 is provided from both sides in the moving direction of the shutter member 105.
Can be performed respectively. That is, according to the lock section 110, the degree of freedom of the position where the shutter operation arm 108 on the recording / reproducing apparatus side is disposed is improved.

Still another shutter mechanism having still another lock portion will be described with reference to the drawings. FIG.
As shown in FIG. 33 and FIG. 33, the disk cartridge 4 provided with still another shutter mechanism has the same members as the above-described disk cartridge 3, and therefore the same members are given the same reference numerals and description thereof will be omitted.

The cartridge body 101 of the disk cartridge 4 is provided with a shutter mechanism 144 for opening and closing the entrance opening 102 and the recording / reproducing opening 103. The shutter mechanism 144 is provided for the entrance opening 1.
02 and a shutter member 145 that opens and closes the recording / reproducing opening 103, and the shutter member 145 is
And a torsion coil spring (not shown) for urging the second and third members 103 in the closing direction.

The shutter member 145 is connected to the entrance opening 10.
2 and opposing shutter plates 145a, 145a for opening and closing the recording / reproducing opening 103, and these shutter plates 145
a, 145a, and a connecting piece 145b for connecting one end of the 145a, and has a substantially U-shaped cross section. Shutter member 14
A shutter plate 145a is movably disposed in a guide recess provided on the main surface of the cartridge main body 101, and the leading end of the shutter plate 145a is provided on the cartridge main body 101 to have a width of the cartridge main body 101. It is movably held on both sides in the direction.

The shutter mechanism 144 includes the connecting piece 1.
A lock portion 150 that regulates the movement of the shutter member 145 is provided inside the 45b. This lock part 15
As shown in FIG. 33, when 0 is loaded in the recording / reproducing apparatus, 0 is operated by the operation projection 109 of the shutter operation arm 108 on the recording / reproducing apparatus side.

As shown in FIGS. 32, 33 and 34, the lock portion 150 according to the present invention includes an engaging member 151 for restricting the movement of the shutter member 145, and a rotating operation member for operating the engaging member 151. 152 and the rotation operation member 15
2, a torsion coil spring 153 for urging the rotating operation member 152, pushing operation members 154, 155 for pushing the rotating operation member 152, and pushing operation members 154, 15
5 and a compression coil spring 156 for urging each of them.

The engaging member 151 is, as shown in FIG.
It is formed in a substantially L-shaped cross section, and an engagement claw 158 that engages with the cartridge body 101 is formed at one end.

Further, the cartridge body 101 is provided at the center of the side surface on the front end side where the shutter member 145 is disposed.
Notch groove 1 with which engagement member 151 of lock portion 150 engages
18 are formed.

As shown in FIG. 34, the turning operation member 152 is provided with a supporting portion 161 for rotatably supporting the engaging member 151 via a support shaft 159, and is formed integrally with the supporting portion 161 to be pressed. It has first and second operation pieces 163 and 164 operated by the operation member 154. The first and second operation pieces 163 and 164 include the pressing operation member 1.
The contact protrusions 165 and 166 with which the contact is made are integrally formed.

As shown in FIG. 34, one end of the torsion coil spring 153 is engaged with the rotation operation member 152, and the direction in which the engagement claw 158 of the engagement member 151 is engaged with the cartridge main body 101 by elastic force. It is energizing.

The pushing operation members 154 and 155 are shown in FIG.
As shown in the figure, in the storage portion 167 formed integrally with the shutter member 145, they are respectively disposed on both sides in the moving direction of the shutter member 145 so as to face each other, and are parallel to the moving direction of the shutter member 145. Each is arranged so as to be movable in the direction. Operation members 168 and 169 for operating the contact protrusions 165 and 166 are formed integrally with the pushing operation member 154 at positions facing the contact protrusions 165 and 166 of the rotation operation member 152. Further, when the contact protrusion 165 of the first operation piece 162 of the rotary operation member 152 moves to the operation piece 168, the push-in operation member 154 abuts against the contact protrusion 165. A notch portion 171 for escape is formed to avoid this. The pressing operation members 154 and 155 have compression coil springs 156.
The mounting shafts 173 and 174 to which are mounted are integrally protruded in parallel with the moving direction.

The push operation members 154 and 155 are provided with push operation portions 154 a and 155 a which are pushed into the shutter operation arm 108 and the like on the recording / reproducing apparatus side.
7 are provided to protrude. The corners of the push-in operation sections 154a and 155a are chamfered.

Therefore, the lock portion 150 can release the engaged state between the engaging member 151 and the cartridge main body 101 by pressing one of the pressing operation members 154. That is, according to the lock section 150, the degree of freedom of the position where the shutter operation arm 108 on the recording / reproducing apparatus side is disposed is improved.

As shown in FIG. 34, the compression coil spring 156 has a mounting shaft 17 for the push-in operation member 154 at both ends.
3,174 are inserted and supported respectively. The compression coil spring 156 presses the pressing operation member 1 by elastic force.
And I urge each arrow p ₁ direction and the arrow p ₂ directions 54,155.

The shutter mechanism 14 configured as described above
The operation of restricting the movement of the shutter member 145 and the operation of releasing the restriction of the fourth lock unit 150 will be described with reference to the drawings.

As shown in FIGS. 36 and 37, the locking portion 150 has the engaging claw 158 of the engaging member 151 engaged with the notch groove 118 of the cartridge body 101 by the urging force of the torsion coil spring 153. Shutter member 145
Restricts the movement of the shutter member 145 with the recording / reproducing opening 103 and the entrance opening 102 closed.

When the disc cartridge 4 is loaded in the recording / reproducing apparatus, the shutter operating arm 108 of the recording / reproducing apparatus contacts the lock 150 of the shutter member 145 as shown in FIG. The lock portion 150 of the shutter mechanism 144 is connected to the operation protrusion 1 of the shutter operation arm 108.
When the pressing operation of the pressing operation member 09 is performed by the pressing operation member 154, the engagement state between the engaging member 151 and the engaging groove 157 of the cartridge main body 101 is released as shown in FIGS. The member 145 is movable.

When the disk cartridge 4 is taken out of the recording / reproducing apparatus, the shutter operation arm 10
8 is separated from the shutter member 145, the engaging member 151 is moved by the torsion coil spring 153 of the lock portion 150, and the engaging claw 158 of the engaging member 151 is engaged with the notch groove 118 of the cartridge main body 101. Thus, the movement of the shutter member 145 is restricted.

As described above, according to the lock portion 150 provided in the shutter mechanism 144, for example, only the notch groove 118 is formed in the cartridge body 231 of the above-described conventional disk cartridge 203, and the lock portion 150 is formed in the cartridge body 231. By merely replacing and assembling the shutter member 145 provided with the lock member 150, it is relatively easy to dispose the lock portion 150 in the conventional disk cartridge 203.

Further, according to the lock section 150, since it can be operated by the shutter opening / closing means provided in the conventional recording / reproducing apparatus, it is possible to reliably maintain compatibility with other disk cartridges.

Further, according to the lock portion 150, the lock portion 150 is provided from both sides in the moving direction of the shutter member 145.
Can be performed respectively. That is, according to the lock section 150, the degree of freedom of the position where the shutter operation arm 108 on the recording / reproducing apparatus side is disposed is improved.

[0144]

As described above, according to the disk cartridge of the present invention, the size of the cartridge body can be reduced because the opening / closing control means of the shutter mechanism is provided on the shutter member.

Further, according to the recording and / or reproducing apparatus of the present invention, since the shutter opening / closing means includes the regulation release means, the regulation of the movement of the shutter member can be released and the shutter member can be opened / closed. .

[Brief description of the drawings]

FIG. 1 is a perspective view showing a disk cartridge according to the present invention.

FIG. 2 is a perspective view showing the disc cartridge from the bottom side.

FIG. 3 is a perspective view showing the disk cartridge from the bottom side.

FIG. 4 is a longitudinal sectional view showing the disk cartridge.

FIG. 5 is an exploded perspective view showing the disk cartridge.

FIG. 6 is an exploded perspective view showing the disk cartridge.

FIG. 7 is a perspective view showing a state in which a lock portion of a shutter mechanism restricts movement of a shutter member.

FIG. 8 is a perspective view showing a state in which the lock section restricts movement of a shutter member.

FIG. 9 is a perspective view showing a state in which the lock section releases the restriction on the movement of the shutter member.

FIG. 10 is a perspective view showing a state in which the lock has released restriction on movement of the shutter member.

FIG. 11 is a perspective view showing a state where the disc cartridge is loaded into a recording / reproducing apparatus.

FIG. 12 is a plan view showing an operation of a shutter operation mechanism for operating the shutter member.

FIG. 13 is a plan view showing an operation of a shutter operation mechanism for operating the shutter member.

FIG. 14 is a perspective view showing a shutter operation arm of the shutter operation mechanism.

FIG. 15 is a perspective view showing another disk cartridge.

FIG. 16 is a perspective view showing another disk cartridge.

FIG. 17 is a perspective view showing a state where a lock portion of a shutter mechanism of another disk cartridge restricts movement of a shutter member.

FIG. 18 is a plan view showing a state in which the lock section restricts movement of a shutter member.

FIG. 19 is a perspective view showing a state in which the lock section releases the restriction on the movement of the shutter member.

FIG. 20 is a plan view showing a state in which the lock has released the restriction on the movement of the shutter member.

FIG. 21 is a perspective view showing still another disk cartridge.

FIG. 22 is a perspective view showing still another disk cartridge.

FIG. 23 is an exploded perspective view showing a lock portion of a shutter mechanism provided in still another disk cartridge.

FIG. 24 is an exploded perspective view showing a part of the lock part assembled.

FIG. 25 is a perspective view showing the lock portion assembled.

FIG. 26 is a perspective plan view showing a state in which the lock section restricts movement of a shutter member.

FIG. 27 is a sectional view taken along line AA of the lock section in FIG. 26;

FIG. 28 is a sectional view taken along the line BB showing the lock portion in FIG. 26;

FIG. 29 is a sectional view taken along the line CC of FIG. 26 showing the lock portion.

FIG. 30 is a perspective plan view showing a state in which the lock section releases the restriction on the movement of the shutter member.

FIG. 31 is a sectional view taken along line DD of the lock portion in FIG. 30;

FIG. 32 is a perspective view showing still another disk cartridge.

FIG. 33 is a perspective view showing still another disk cartridge.

FIG. 34 is a perspective view showing a state in which a lock portion of the shutter mechanism restricts movement of a shutter member.

FIG. 35 is a perspective view showing a state in which the lock section releases the restriction on the movement of the shutter member.

FIG. 36 is a perspective plan view showing a state in which the lock section restricts movement of a shutter member.

FIG. 37 is a cross-sectional view showing a state where the lock section restricts movement of the shutter member.

FIG. 38 is a perspective plan view showing a state where the lock section releases the restriction on the movement of the shutter member.

FIG. 39 is a cross-sectional view showing a state in which the lock has released the restriction on the movement of the shutter member.

FIG. 40 is a perspective view showing a conventional disk cartridge.

FIG. 41 is a perspective view showing a conventional disk cartridge.

FIG. 42 is a longitudinal sectional view showing a magneto-optical disk provided in a conventional disk cartridge.

FIG. 43 is a perspective view shown for explaining an opening / closing operation of a shutter member provided in a conventional disk cartridge.

FIG. 44 is a perspective view showing still another conventional disk cartridge.

FIG. 45 is a perspective view showing another conventional disk cartridge.

[Explanation of symbols]

1 disk cartridge, 6, 7 magneto-optical disk,
8 cartridge body, 15 table entry opening,
16 opening for recording / reproduction, 18 shutter mechanism, 21
First shutter member, 22 Second shutter member, 23
Connecting member, 50 lock portion, 51 regulating member

Claims (10)

[Claims] 1. A cartridge body for accommodating a disc-shaped recording medium, and a recording and / or reproducing apparatus provided on the cartridge body for exposing a signal recording area of the disc-shaped recording medium to recording and / or reproducing means. Or a reproduction opening, and a shutter mechanism having a shutter member provided to be able to open and close the recording and / or reproduction opening, wherein the shutter mechanism includes a shutter member for recording and / or reproduction. An open / close restricting means for restricting an opening / closing operation of a shutter member with respect to an opening is provided. 2. The disk cartridge according to claim 1, wherein said opening / closing restricting means is provided at a position on a shutter member facing a side surface of said cartridge body. 3. The shutter mechanism, wherein the shutter member comprises:
2. The disc cartridge according to claim 1, wherein the disc cartridge is rotatably provided around a substantially central portion of a main surface of the cartridge main body. 4. The disk cartridge according to claim 3, wherein the opening / closing restricting means is provided at a position facing the outside of the shutter member. 5. The shutter member has a shutter operation projection at a position facing outward, the shutter operation projection contacting a shutter opening / closing means for opening and closing the shutter member. 2. The disk cartridge according to claim 1, wherein said opening / closing restricting means for restricting the movement of the member is provided. 6. The recording and / or reproducing opening of the cartridge main body, wherein the shutter member records and / or reproduces data.
2. The disc cartridge according to claim 1, wherein the disc cartridge is provided so as to be able to move in parallel in a direction perpendicular to a loading direction with respect to the reproducing apparatus. 7. The opening / closing restricting means, wherein the direction of the pressing force pressed by the restriction releasing means for releasing the restricted state of the shutter member is a direction substantially orthogonal to the moving direction of the shutter member. The disk cartridge according to claim 5, wherein 8. The opening / closing restricting means, wherein the direction of the pressing force pressed to release the restricted state of the shutter member is substantially parallel to the direction of movement of the shutter member and the direction of movement of the shutter member. The disc cartridge according to claim 5, wherein the disc cartridge has at least two directions. 9. The apparatus according to claim 5, wherein the magnitude of the pressing force pressed to release the restriction state by said opening / closing restriction means is smaller than the pressing force pressed to move the shutter member. The disc cartridge as described. 10. A cartridge body for accommodating a disc-shaped recording medium, and recording and / or recording and / or reproducing means provided on the cartridge body for exposing a signal recording area of the disc-shaped recording medium to recording and / or reproducing means. An opening for reproduction,
A cartridge loading section for loading a disk cartridge having a shutter mechanism having a shutter member provided to be able to open and close the recording and / or reproducing opening, and opening and closing regulating means for regulating movement of the shutter member; A shutter opening / closing means provided in the loading portion for opening / closing a shutter mechanism of the disk cartridge, wherein the shutter opening / closing means has a regulation release means for releasing a regulation state of the shutter member by the opening / closing regulation member. A recording and / or reproducing apparatus as a feature.