JP2001155461A - Disk cartridge - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a disk cartridge which can be used for both of the drive device in which an insertion is performed from the front side of a case and the drive in which the insertion is performed from the side surface side of the case in the double face type. SOLUTION: This disk cartridge 1 is constituted in such a manner that a shutter 4 which is moved in both of the left and right directions is disposed on the case 3, a pair of shutter locking members 5, 6 which locks the shutter 4 on the closed position are disposed, either one of the shutter locking members 5, 6 is unlocked by a shutter releasing member of the drive device and the shutter 4 is moved to the opened position in the direction where the shutter 4 is unlocked. Therein, a sliding surface 9 which is opened to a front surface 3c and both side surfaces 3d, 3e is disposed over all region of the front surface 3c side of the case 3, respective parts 20, 21 to be operated of a pair of the shutter locking member 5, 6 are respectively disposed on the positions of both outsides of the shutter 4 which is located on the closed position and the surface which is opposite to the shutter 4 of the respective parts 20, 21 to be operated is made an inclined surface.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a double-sided disk cartridge having means for locking a shutter for closing an opening of a case.

[0002]

2. Description of the Related Art Conventionally, optical disks, magnetic disks, and the like have been used in the form of a cartridge in which a disk is housed in a case in order to prevent dust, dirt, scratches, and dirt, and to guarantee the reliability of recording and reproduction. Was. In recent years, as the recording capacity required for a disk has increased, a double-sided disk for recording on both sides of the disk has been used. The double-sided disk cartridge containing the double-sided disk is configured such that the shutter for opening and closing the opening of the case can be opened and closed in both directions. In addition, a shutter lock means is provided to prevent the shutter from being inadvertently opened when the drive apparatus is not mounted, and the shutter lock means is released and the shutter is opened in the process of being mounted on the drive apparatus. ing.

FIGS. 11 to 13 show a conventional double-sided disk cartridge having such a shutter lock means (see Japanese Utility Model Registration No. 3002033). FIG.
13 to 13, a case 100 in which a disk (not shown) is accommodated has an opening 101 provided on the upper surface and the lower surface thereof, and the opening 101 is provided at a substantially central position of the case 100. I have. The shutter 102 is attached to the front side of the case 100, and is movably provided in both directions between a substantially closed position for closing the opening 101 and open positions on both left and right sides for opening the opening 101.

A pair of left and right shutter lock members 103 and 104 are provided in the case 100. Each of the shutter lock members 103 and 104 has a lock portion 103a,
A lock position 104a projects into the guide groove 105 of the case 100 and is locked to the pair of right and left locking portions 106 and 107 of the shutter 102, respectively.
03, 104 due to elastic deformation of the lock portions 103a, 1
04a retreats from the guide groove 105 and a pair of left and right locking portions 1
06 and 107, respectively.

A pair of locking portions 106, 1 of the shutter 102
07 are provided in the vicinity of the shutter lock members 103 and 10 in a state where the shutter 102 is in the closed position.
4 are set to coincide with the positions of the lock portions 103a and 104a. The guide groove 105 (indicated by hatching in FIG. 11B) extends in the sliding direction of the shutter 102, and at a position corresponding to the position of each of the engagement holes 108 and 109 when the shutter 102 is in the closed position. The case 100 has an entrance 105a on the front surface, but at other positions, a bank 110 is provided on the front surface.

In the above configuration, as shown in FIG. 13A, when the disk cartridge is inserted into the drive device with the front surface of the case 100 facing forward, as shown in FIG.
As shown in FIG. 11A, the pin 111a at the tip of the shutter opening member 111 is inserted into the engagement hole 108 of the shutter 102 and the entrance 105a of the guide groove 105, and FIG.
As shown in FIG. 2A, the pin 111 a presses the lock 103 a of the shutter lock member 103. As a result of this pressing, the shutter lock member 103 is elastically deformed to the unlock position as shown in FIG. 13C, and this elastic deformation deforms the pin portion 111a of the shutter release member 111.
Penetrates deep into the guide groove 105. When the disc cartridge is further inserted from this state, the pin portion 111a of the shutter opening member 111 moves in the guide groove 105 in the direction of arrow M as shown in FIG. Is slid to the open position by being moved in the direction of arrow M (the position in FIG. 11B).

When the cartridge is ejected, the pin 111a of the shutter opening member 111 moves in the guide groove 105 in the direction of the arrow M, and the shutter 102 moves in the direction of the arrow M with this movement. As shown in FIG. 12B, when the locking portion 106 of the shutter 102 comes into contact with the locking portion 103a of the shutter locking member 103, the shutter locking member 103 is moved to the unlock position by elastic deformation and the shutter 102 moves. Is allowed, and is slid to the closed position. When the shutter 102 reaches the closed position, the shutter 102
Position of the engagement hole 108 and the entrance 105a of the guide groove 105
And the pin portion 111a of the shutter opening member 111 is disengaged from the engagement hole 108 of the shutter 102. When the pin portion 111a of the shutter opening member 111 is detached, the shutter lock member 103 is elastically deformed to return, and the lock portion 103a is engaged with the locking portion 106.

When the disk cartridge is inserted upside down into the drive, the shutter opening member 1
11 pin portion 111a is engaged with the engagement hole 109 of the shutter 102.
To the shutter 102 by the same operation as described above.
Is opened, and the opened shutter 102 is closed. In this manner, the disk cartridge can be selectively inserted into the drive device regardless of the direction of the upper and lower surfaces.

[0009]

However, in the above-mentioned conventional disk cartridge, only the drive device of the type in which the front surface of the case 100 is inserted forward can be used, and the drive device of the type in which the side surface of the case 100 is inserted forward. Cannot be used for That is, only when the pin 111a of the shutter opening member 111 is located on the locus of insertion of the engagement holes 108 and 109 of the shutter 102, the pin 111a of the shutter opening member 111 is inserted into the engagement holes 108 and 109 of the shutter 102. This is because the pin portion 111a of the shutter opening member 111 is not inserted into the engaging holes 108 and 109 of the shutter 102 when the case 100 is inserted with the side surface facing forward.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and is directed to a double-sided type drive device which is inserted from the front side of a case and a drive device which is inserted from a side surface of the case. An object is to provide a disk cartridge that can be used for both.

[0011]

According to a first aspect of the present invention, there is provided a case in which a disk is rotatably housed therein, and a case is provided with an opening through which parts of a drive device enter, and the case is mounted on the case. A shutter provided movably in both directions between a closed position for closing the opening and open positions on both sides for releasing the opening, and mounted on the case to lock movement of the shutter in opposite directions; A pair of shutter lock members movable between a lock position to be locked and a lock release position to release the lock of the shutter, and provided with a return force for returning to the lock position. During the mounting process, one of the shutter lock members is unlocked by the shutter release member of the drive device, and the shutter is moved to the other shutter lock member side. In the disk cartridge is moved to the open position of the direction, the whole area of the front side of the case,
A slide surface which is open to the front and both sides and on which a shutter release member of the drive device slides is provided, and each operated portion of the pair of shutter lock members is located at both outer positions of the shutter located at a closed position. The lock position of each operated part is provided at a position protruding to the front side from the slide surface, and the unlock position is set at a position protruded inward from the slide surface. Means for shifting from the lock position to the unlock position while pressing the other shutter lock member with the shutter in the process of releasing the lock of the shutter lock member and moving the shutter to the open position.

According to a second aspect of the present invention, in the disk cartridge according to the first aspect, the means for shifting the other shutter locking member from the locked position to the unlocked position while the shutter is moving to the open position is characterized in that: At least one of the opposing surfaces of the shutter and each of the operated portions disposed on both outer sides of the shutter is configured as an inclined surface.

[0013]

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

FIGS. 1 to 8 show a first embodiment of the present invention. FIG. 1 is a perspective view of a disk cartridge, and FIG.
FIG. 2B is a plan view of the disc cartridge with the case upper side removed, FIG. 2B is a front view of the disc cartridge, and FIG.
FIG. 4A is an enlarged view of a main part of FIG. 2A, and FIG. 4 is a case where the disk cartridge is inserted into the drive device from the front side of the case. FIG. 5 is a plan view of the disk cartridge, showing a state where the shutter release member is unlocked. FIG. 6 is a plan view of the disk cartridge, showing a state where the shutter release member is unlocked. FIG. FIG. 7 is a plan view in which the upper surface side is removed, and FIG. 7 is a plan view in which the case is inserted into the drive device from the side surface side of the case, and the upper surface side of the case of the disk cartridge is shown in a state before the shutter release member is unlocked. FIG. 8 is a plan view showing a state in which the shutter release member is unlocked, with the case upper surface side of the disk cartridge removed. .

In FIG. 1 to FIG. 6, a disk cartridge 1 has a disk 2, an uneven square case 3 for accommodating the disk 2, a shutter 4 mounted on the case 3, and the shutter 4 can be locked. It is mainly composed of a pair of shutter lock members 5 and 6.

In the case 3, the upper surface side case division member (particularly without a reference numeral) and the lower surface side case division member (particularly without a reference numeral) are joined in a state where their joint surfaces abut each other. The disk 2 is rotatably housed in this. The upper and lower surfaces of the disk 2 are configured as recording / reproducing surfaces. A head opening for inserting a head (pickup) for recording and reproducing information by accessing the disk 2 and a drive shaft (turntable) for rotating the disk 2 are inserted into the upper surface 3a and the lower surface 3b of the case 3. The opening 7 is formed at a substantially central portion in the lateral direction of the case. The upper and lower surfaces of the case 3 are provided in the same shape except for identification marks (not shown) indicating the upper and lower surfaces (front and rear surfaces).

A slide groove 8 surrounded by an upper wall portion 8a and a lower wall portion 8b is provided in a concave shape over the entire area on the front surface 3c side of the case 3, and a bottom surface of the slide groove 8 is provided with a shutter release member 32 to be described later. Is formed as a slide surface 9 on which the tip of the slider slides. This slide surface 9 is the front surface 3c of the case 3.
The left and right side surfaces 3 are open over the entire area of the side.
It is also open to the d and 3e sides. Further, a pair of lock member projecting holes 9a, 9a are opened on the left and right sides of the center of the slide surface 9, respectively.

The shutter 4 is connected to an upper surface 4a that contacts the upper surface 3a of the case 3 and a lower surface 4b (shown in FIGS. 1 and 2B) that contacts the lower surface 3b of the case 3. A closed position (the position shown in FIGS. 1 and 2) that closes the opening 7 and an open position on both the left and right sides that open the opening 7 (a U-shaped configuration). FIG.
And the opposite position) are slidably provided in both directions.

A pair of shutter spring receiving portions 10a and 10b are provided on both sides of the front surface portion 4c of the shutter 4, respectively. The shutter spring receiving portions 10a and 10b receive one ends of the shutter springs 11 and 12, respectively.
The other ends of the pair of shutter springs 11 and 12 are hung on the left and right corners on the front side in the case 3, respectively, and the shutter 4 is provided with the pair of shutter spring receiving portions 10a and 10a.
After that, the pair of shutter springs 11 and 12 are urged toward the closed position by the spring force of the pair of shutter springs 11 and 12. When the shutter 4 moves to the open position on one side against the spring force of one of the shutter springs 11 or 12, the other shutter spring 12
Or 11 has a shutter spring receiving portion 10b or 10a
Is received by a stopper (not shown) in the case. Further, engagement grooves 13 and 14 are provided on the left and right sides of the inner surface of the front surface portion 4c of the shutter 4. Locking claw portions 22 and 23 of a pair of shutter lock members 5 and 6, which will be described later, are engaged with the pair of engagement grooves 13 and 14, respectively.

A pair of shutter lock members 5 and 6 are rotatably supported by support shafts 15 and 16 erected in the case 3, respectively.
Are configured to be rotatable and movable between a lock position shown in FIG. 2 and an unlock position (the position of the shutter lock member 5 on the left side in FIG. 5).
It is urged to the lock position side by the spring force of 7, 18.

The operated portions 20, 21 and the locking claws 22, 23 are provided on the free ends of the pair of shutter lock members 5, 6, respectively.
In the lock position, the operated portions 20 and 21 and the lock claws 22 and 23 protrude forward from the lock member protrusion holes 9 a and 9 b of the slide surface 9. When the shutter 4 is in the closed position, the protruding locking claws 22 and 23 are
Are inserted into the engagement grooves 13 and 14, respectively. In the unlocked position, each of the operated portions 20 and 21 and each of the locking claws 2
Reference numerals 2 and 23 denote respective lock member projecting holes 9a and 9 of the slide surface 9.
b. When the shutter 4 is located at the closed position, the locking claw portions 22 and 23 that have retreated are disengaged from the engagement grooves 13 and 14 of the shutter 4, respectively. The operated portions 20 and 21 of the pair of shutter lock members 5 and 6 have a protruding amount such that they do not protrude forward from the upper wall portion 8a and the lower wall portion 8b constituting the slide groove 8 in the locked position. Is set.

The front surface of the operated portion 20 of the left shutter lock member 5 has an inclined surface which gradually projects forward from the closed position of the shutter 4 toward the right open position (from left to right in the drawing). 20a (shown in FIG. 3), the front surface of the locking claw 22 of the left shutter locking member 5 is opposite to the above, from the open position on the right side of the shutter 4 to the closed position (from the right side in the drawing). Left direction)
Inclined surface 22a gradually protruding forward toward
(Shown in FIG. 3). The front surface of the operated portion 21 of the right shutter lock member 6 has an inclined surface 21a (FIG. 3) that gradually projects forward from the closed position of the shutter 4 toward the left open position (from right to left in the drawing). Shown), and the right shutter lock member 6
In contrast to the above, the front surface of the locking claw portion 23 has an inclined surface 23a (FIG. 3) that gradually projects forward from the open position on the left side of the shutter 4 toward the closed position (from left to right in the drawing). Shown).

Further, when one of the shutter lock members 5 and 6 is unlocked and the shutter 4 is moved from the closed position to the open position, the other shutter lock members 6 and 5 which have not been unlocked are released. There is provided a means for shifting from the locked position to the unlocked position while being pressed by the shutter 4. In this embodiment, the operated part 21, 20 of each shutter lock member 6, 5 faces both side surfaces of the shutter 4. The surface is constituted by inclined surfaces 21b and 20b (shown in FIG. 3).

On the other hand, a drive device (not shown, for example, FD or DVD system) into which the disk cartridge 1 is inserted with the front surface 3c of the case 3 facing forward, as shown in FIGS. It has a cartridge insertion slot (not shown) for insertion, and is configured so that the disc cartridge 1 inserted into the cartridge insertion slot (not shown) can be loaded and mounted at the mounting position. Also, the disc cartridge 1 at the mounting position is loaded and a cartridge insertion slot (not shown) is loaded.
It is configured to discharge up to Further, a shutter opening / closing mechanism 30 for releasing the shutter 4 to the open position in the mounting process and returning the shutter 4 to the closed position in the discharging process is provided.

The shutter opening / closing mechanism 30 is provided in a drive device (not shown), and has a shutter release member 32 whose one end is rotatably supported by a support shaft 31. The portion 32a has the slide groove 8
It is set to a size that can be inserted into the inside. The shutter release member 32 is at a standby position shown in FIG. 4 (this standby position may be a position rotated in the CCW direction from a position of pressing the operated portion of the shutter lock member 5 shown in FIG. 5). 6 and is urged toward the standby position by the spring force of the spring 33. In the drawing, reference numeral 34 denotes a state in which the shutter release member 32 is CCW higher than the standby position shown in FIG.
The other end of the spring 33 is hooked on the stopper 34.

A drive device (not shown, for example, an MD system) into which the disk cartridge 1 is inserted with the side surfaces 3d and 3e of the case 3 facing forward, as shown in FIGS. It has a cartridge insertion slot (not shown) for inserting the disk cartridge 1, and is configured so that the disk cartridge 1 inserted into the cartridge insertion slot (not shown) can be loaded and mounted at a mounting position. I have. Further, the disc cartridge 1 at the mounting position is configured to be loaded and ejected to a cartridge insertion slot (not shown). Further, a shutter opening / closing mechanism 35 for releasing the shutter 4 to the open position in the mounting process and returning the shutter 4 to the closed position in the discharging process is provided.

The shutter opening / closing mechanism 35 is provided in a drive device (not shown) and has a shutter release member 37 whose one end is rotatably supported by a support shaft 36. The shutter release member 37 has a distal end. It is bent near, and this bent tip 37a projects into the cassette holder. The tip portion 37a is set to a size that can be inserted into the slide groove 8. This shutter release member 37
Are urged in the direction of pressing the slide surface 9 by the spring force of the spring 38. In the drawings, reference numeral 39 denotes a spring retaining portion for retaining the other end of the spring 38.

Next, the operation of the above configuration will be described. First,
A case where the disk cartridge 1 is used in a drive device in which the front surface 3c of the case 3 is inserted with the front side as the front will be described.
As shown in FIG. 4, the disk cartridge 1 is inserted into the case 3 with the front surface 3c of the case 3 as the insertion tip and the upper surface 3a.
Drive device (not shown) with F
Of the cartridge (not shown). Then, as shown in FIG. 5, the shutter release member 32 of the drive device is inserted into the slide groove 8 of the front surface 3c of the case 3, and the distal end portion 32a of the shutter release member 32 contacts the slide surface 9, and After the slide surface 9 is slid, the operated portion 20 of the left shutter lock member 5 is pressed. Then, the shutter lock member 5 is rotated by the pressing force against the spring force of the spring 17 and moved to the unlock position. As a result, the shutter 4 is unlocked.

When the disk cartridge 1 is further inserted from this state, the inserted disk cartridge 1
The shutter release member 32 is pressed by this, and the pressing force causes the shutter release member 32 to rotate in the release position direction (CW direction in FIG. 5) against the spring force of the spring 33.
The shutter 4 is pressed in the opening direction by the rotational movement of the shutter release member 32.
Is slid in the right opening position direction (the direction of arrow A) against the spring force of the shutter spring 12. When the shutter 4 is slid in the opening position on the right side, the right side surface of the shutter 4 presses the tapered surface 21b of the operated portion 21 of the right shutter locking member 6 to move the right shutter locking member 6 to the unlock position. The shutter 4 is allowed to slide. When the disc cartridge 1 is loaded to the mounting position, the shutter 4 is slid to the open position shown in FIG. In the mounting position, the disk 2 is rotatable by being sandwiched between a turntable and a clamper fixed to a drive shaft of the drive device, and information is recorded on the disk 2 by a head (pickup) of the drive device. Information can be reproduced from the disc 2.

When the eject mode is selected, the disc cartridge 1 is ejected from the cartridge insertion port along the reverse path. The case 3 gradually releases the pressing of the shutter release member 32 in the process of moving the disk cartridge 1 in the ejection direction of the cartridge insertion slot, and the shutter release member 32 is released by the spring force of the spring 33 with this release. It is rotated in the direction of the standby position (CCW direction). The rotation of the shutter release member 32 also gradually releases the pressure on the shutter 4, and with this release, the shutter 4 is slid in the closing position direction (the direction of arrow B) by the spring force of the shutter spring 12.

When the left end face of the front face portion 4c of the shutter 4 comes into contact with the locking claw 22 of the left shutter lock member 5, the left shutter lock member 5 is unlocked against the spring force of the spring 17. The shutter 4 is allowed to slide by rotating to the position side. When the shutter 4 slides to the closed position, the positions of the left and right engagement grooves 13 and 14 of the shutter 4 coincide with the positions of the locking claws 22 and 23 of the pair of left and right shutter lock members 5 and 6. Shutter lock members 5 and 6 are rotated by spring forces of springs 17 and 18 to lock claw portions 22 and 2 of shutter lock members 5 and 6.
3 enters the engagement grooves 13 and 14 of the shutter 4. Thus, the shutter 4 is locked.

A drive device (not shown) in the direction of arrow F with the upper and lower surfaces reversed from the above, that is, with the disk cartridge 1 with the front surface 3c of the case 3 as the insertion tip and the lower surface 3b as the upper side. ), The shutter lock members 5 and 6 are turned right and left, and the shutter lock member 6 is unlocked by the shutter release member 32. It is mounted on the drive device and discharged.

Next, a drive for inserting the disc cartridge 1 into the cartridge insertion slot (not shown) of the drive device (not shown) in the direction of arrow B with the side face 3d or the side face 3e of the case 3 as the insertion tip. The case of using the device will be described. As shown in FIG. 7, the disc cartridge 1 is inserted into a cartridge insertion slot (not shown) of a drive device (not shown) in the direction of arrow B, with the side surface 3d of the case 3 as an insertion tip. Then, the shutter release member 37 of the drive device is inserted into the slide groove 8 on the front surface 3c of the case 3 from the side surface side, and the distal end portion 37a of the shutter release member 37 slides on the slide surface 9 as shown in FIG. Thereafter, the operated portion 20 of the left shutter lock member 5 is pressed. Then, the shutter lock member 5 is rotated by the pressing force against the spring force of the spring 17 and moved to the unlock position. As a result, the shutter 4 is unlocked.

When the disc cartridge 1 is further inserted in this state, the shutter 4 is pressed in the opening direction by the shutter release member 37, and the pressing force causes the shutter 4 to open against the rightward open position against the spring force of the shutter spring 12. It is slid in the direction (arrow A direction). When the shutter 4 is slid in the opening position on the right side, the right side surface of the shutter 4 presses the tapered surface 21b of the operated portion 21 of the right shutter locking member 6 to move the right shutter locking member 6 to the unlock position. The shutter 4 is allowed to slide. And the disk cartridge 1
When is loaded to the mounting position, the shutter 4 is slid to the open position. At the loading position, the disk 2
Is rotatable by being sandwiched between a turntable and a clamper fixed to a drive shaft of a drive device, and information is recorded on the disk 2 by a head (pickup) of the drive device, and information is reproduced from the disk 2. It is possible.

When the eject mode is selected, the disc cartridge 1 is ejected from the cartridge insertion port along the reverse path. Then, as the disc cartridge 1 is moved in the ejection direction of the cartridge insertion slot, the pressing of the shutter release member 37 against the shutter 4 is also gradually released, and with this release, the shutter 4 is relatively moved by the spring force of the shutter spring 12. At the closing position (arrow B direction).

When the left end face of the front face portion 4c of the shutter 4 comes into contact with the locking claw 22 of the left shutter lock member 5, the left shutter lock member 5 is unlocked against the spring force of the spring 17. The shutter 4 is allowed to slide by rotating to the position side. When the shutter 4 slides to the closed position, the positions of the left and right engagement grooves 13 and 14 of the shutter 4 coincide with the positions of the locking claws 22 and 23 of the pair of left and right shutter lock members 5 and 6. Shutter lock members 5 and 6 are rotated by spring forces of springs 17 and 18 to lock claw portions 22 and 2 of shutter lock members 5 and 6.
3 enters the engagement grooves 13 and 14 of the shutter 4. Thus, the shutter 4 is locked.

A drive device (not shown) in the direction of arrow B with the upper and lower surfaces opposite to those described above, that is, with the disk cartridge 1 having the side surface 3e of the case 3 as the insertion tip.
When the shutter lock members 5 and 6 are inserted into the cartridge insertion opening (not shown) of
The shutter lock member 6 is unlocked by the shutter release member 37, and is mounted on the drive device and discharged in the same manner as described above.

In the first embodiment, the operated parts 20, 21 of the shutter lock members 5, 6 are arranged inside the slide groove 8, so that the user can move the operated parts 20, 21 to the unlock position. Since it is difficult to change the shutter 4, it is possible to effectively prevent the user from accidentally or intentionally opening the shutter 4.

According to the first embodiment, the front surfaces of the operated portions 20, 21 of the shutter lock members 5, 6 are formed as the inclined surfaces 20a, 21a. There is an advantage that the tip portions 32a and 37a can smoothly press the operated portions 20 and 21 of the shutter lock members 5 and 6, respectively. Side 3d, 3 of case 3
This is particularly effective when used in a drive device inserted from e.

Further, according to the first embodiment, the shutter 4 of each of the operated portions 20 and 21 of the shutter lock members 5 and 6 is provided.
Are formed as the inclined surfaces 20b, 21b, so that the other shutter lock members 5, 6 which are not unlocked by the shutter release members 32, 37 can be easily unlocked with a simple structure. is there.

Further, according to the first embodiment, since the surfaces of the locking claws 22, 23 of the shutter locking members 5, 6 are formed as the inclined surfaces 22a, 23a, the shutter 4 is moved from the open position. When returning to the closed position, the shutter lock members 5, 6 are smoothly shifted to the unlocked position by the pressing force of the shutter 4, so that the return operation of the shutter 4 becomes smooth.

According to the first embodiment, the shutter lock members 5 and 6 are rotated toward the unlock position by being urged toward the lock position by the spring forces of the springs 17 and 18. Is also configured to be able to return to the lock position, but it may be configured to return to the lock position by elastic return deformation. However, using the springs 17 and 18 as in the first embodiment has the advantage that the return to the locked position is more reliable.

According to the first embodiment, since the slide surface 9 is formed as the bottom surface of the concave slide groove 8, the leading ends 32a, 3 of the shutter release members 32, 37 are provided.
7a slides on the slide surface 9 while being guided by the upper wall portion 8a and the lower wall portion 8b of the slide groove 8,
The distal ends 32a, 37a of the shutter release members 32, 37 reliably release the shutter locks of the shutter lock members 5, 6.

FIGS. 9 and 10 show a second embodiment of the present invention. FIG. 9 is a plan view of the disk cartridge 1A with the case upper side removed, and FIG. 10 is an enlarged view of a main part of FIG.
9 and 10, the second embodiment differs from the first embodiment in that one of the shutter lock members 5, 6 is unlocked and the shutter 4 moves to the open position. In the process, the other shutter lock members 6, 5
Means for shifting from the locked position to the unlocked position while pressing with the shutter 4. That is, in the second embodiment, each operated portion 2 of the pair of shutter lock members 5 and 6 is operated.
Both sides of the shutter 4 opposed to 0, 21 are inclined surfaces 40.
a, 40b, and the surfaces of the operated portions 20, 21 of the shutter lock members 5, 6 are not configured as inclined surfaces. Since other configurations are the same as those of the first embodiment,
The same reference numerals are given to the drawings, and description thereof will be omitted.

The second embodiment has the same functions and effects as those of the first embodiment. Similarly, there is an advantage that the unlocking of the other shutter lock members 5, 6 which are not unlocked by the shutter release members 32, 37 can be easily performed with a simple structure.

A comparison between the conventional example and the first and second embodiments shows that the position of the pin 111a of the shutter opening member 111 and the engagement holes 108, 10 of the shutter 102 are different in the conventional example.
It is necessary to position the position 9 accurately.
If the relative position is slightly deviated due to manufacturing variations, the shutter 102 is directly pushed with the shutter 102 locked, and the shutter 1 is pushed.
02 may be damaged. However, in the first and second embodiments, the position of the distal end portion 32a of the shutter release member 32 may be located at the position of the operated portions 20 and 21 of the shutter lock members 5 and 6 or a position outside thereof. Excessive dimensional accuracy and positional accuracy are not required for manufacturing. Further, there is no possibility that the end face of the shutter 102 is directly pushed while the shutter 102 is locked and the shutter 102 is damaged.

In the conventional example, since the engaging holes 108 and 109 of the shutter 102 are located near the end face, the shutter 1
The strength of both end portions of the shutter 02 is low, and it may be deformed by being hooked on something while being carried, which may cause malfunction of the shutter 102. However, in the first and second embodiments, since the engagement hole or the like is not provided in the end face portion of the shutter 4, the strength of both end portions of the shutter 4 is strong, and the shutter 4 is hooked on something and deformed when being carried. The shutter 4 does not cause a malfunction.

According to the first and second embodiments,
Means for shifting from the locked position to the unlocked position while pushing the other shutter lock members 6, 5 with the shutter 4 while the one shutter lock members 5, 6 are unlocked and the shutter 4 moves to the open position, One of the opposing surfaces of the shutter 4 and each of the operated portions 20 and 21 disposed on both outer sides of the shutter 4 is inclined with respect to the inclined surfaces 20b and 21b.
Although they are configured as 40a and 40b, both surfaces may be configured as inclined surfaces. The means for shifting the other shutter lock members 6, 5 from the lock position to the unlock position in the process of moving the shutter 4 to the open position may be constituted by other means. However, the configuration as in the first and second embodiments has advantages such as a simple configuration, easy creation, and low cost as described above.

[0049]

As described above, according to the first aspect of the present invention, a slide surface which is open on the front surface and both side surfaces and on which the shutter release member of the drive device slides is provided on the entire front surface of the case. The operated portions of the pair of shutter lock members are respectively provided at both outer positions of the shutter located at the closed position, and the locked positions of the operated portions are positions protruding from the slide surface. The release position is a position withdrawn from the slide surface, and while one of the shutter lock members is unlocked and the shutter moves to the open position, the other shutter lock member is pushed from the lock position while being pushed by the shutter. By providing a means for shifting to the unlocked position, when the drive is inserted into the drive device from the front side of the case, the position other than the position of the shutter is The shutter release member abuts relatively close to the slide surface from the front side, for example, slides the slide surface to press the operated portion of one of the shutter lock members, and the shutter lock member shifts to the unlock position. Thereafter, the shutter release member presses the shutter to move the shutter to the open position, and in the course of this movement, the shutter changes the other shutter lock member to the unlock position and the shutter is moved to the open position, Even if the upper and lower surfaces of the case are reversed and inserted into the drive device, the slide surface is provided to be open to the entire area on the front side of the case, and the same operation as described above is performed left and right reversed since it has a pair of shutter lock members. When the case is inserted into the drive device from the side of the case, the shutter release member is relatively close to the slide surface from the left and right sides. The shutter is moved to the open position by the same operation as described above by sliding on the slide surface, and the slide surface is opened to both side surfaces of the case even when the case is inverted and inserted into the drive device, Since a pair of shutter lock members are provided, the same operation as above is performed in the opposite direction, but the drive device is inserted into the double-sided type and inserted from the front side of the case and the drive is inserted from the side of the case Can be used for both devices. Further, since the operated portion of the shutter lock member protrudes from the slide surface and is located outside the shutter, the position of the distal end of the shutter release member corresponds to the position outside the operated portion of the shutter lock member. Dimensional accuracy in production,
No positional accuracy is required, and there is no risk of damaging the shutter by pressing the end face of the shutter while the shutter is locked.

According to the second aspect of the present invention, in the disk cartridge according to the first aspect, while the one shutter lock member is unlocked and the shutter moves to the open position, the other shutter lock member is moved by the shutter. The means for shifting from the lock position to the unlock position while pressing is
At least one of the opposing surfaces of the shutter and each of the operated parts disposed on both outer sides of the shutter is formed as an inclined surface. In the moving process, the other shutter lock member is smoothly moved to the unlock position along the inclined surface provided on at least one of the shutter and the shutter lock member. Since it can be achieved with a simple configuration, manufacturing can be facilitated and cost can be reduced.

[Brief description of the drawings]

FIG. 1 is a perspective view of a disc cartridge according to a first embodiment of the present invention.

FIG. 2 shows the first embodiment of the present invention, in which (A) is a plan view in which a case upper surface side of a disk cartridge is removed;
(B) is a front view of the disk cartridge.

FIG. 3 shows the first embodiment of the present invention and is an enlarged view of a main part of FIG. 2 (A).

FIG. 4 is a plan view showing the first embodiment of the present invention, in which the disk cartridge is inserted into the drive device from the front side of the case and in which the upper surface side of the disk cartridge is removed, showing a state before the shutter release member is unlocked; FIG.

FIG. 5 is a plan view showing the first embodiment of the present invention, in which the shutter release member is unlocked when the disk cartridge is inserted into the drive device from the front side of the case, with the case upper side removed. It is.

FIG. 6 illustrates the first embodiment of the present invention, in which the shutter release member has moved the shutter to the open position when the shutter release member has moved the shutter to the open position when the case is inserted into the drive device from the front side of the case. FIG.

FIG. 7 shows the first embodiment of the present invention, in which the disk cartridge is inserted into the drive device from the side surface side of the case, and shows a state before the shutter release member is unlocked, with the upper surface side of the case removed. FIG.

FIG. 8 is a plan view illustrating the first embodiment of the present invention, in which the shutter release member is unlocked when the disk cartridge is inserted into the drive device from the side surface side of the case, with the upper surface side of the case removed. It is.

FIG. 9 is a plan view showing the second embodiment of the present invention, in which the upper surface side of the case of the disk cartridge is removed.

10 shows a second embodiment of the present invention, and FIG.
FIG.

11A and 11B show a conventional example, wherein FIG. 11A is a plan view of a disk cartridge in which a shutter release member is inserted into an engagement hole, and FIG. 11B is a plan view of a disk cartridge in which a shutter is released by the shutter release member. It is a top view.

12A and 12B show a conventional example, in which FIG. 12A is an enlarged sectional view of a disk cartridge in which a shutter release member is inserted into an engagement hole, and FIG. 12B is a disk cartridge in which the shutter release member returns inside a guide groove. It is an expanded sectional view of.

FIG. 13 shows a conventional example, in which (A) is a schematic configuration diagram showing a state before a shutter release member is inserted into an engagement hole, and (B).
Is a schematic configuration diagram illustrating a state in which the shutter release member is inserted into the engagement hole, (C) is a schematic configuration diagram illustrating a state in which the shutter release member presses the lock portion, and (D) is a schematic configuration diagram in which the shutter release member has a guide groove. FIG. 3 is a schematic configuration diagram illustrating a moving state.

[Explanation of symbols]

1, 1A Disk cartridge 2 Disk 3 Case 3c Front surface 3d, 3e Side surface 4 Shutter 5, 6 Shutter lock member 7 Opening 9 Sliding surface 13, 14 Engagement groove 17, 18 Spring (means for returning shutter lock member to locked position) 20, 21 Operated part 22, 23 Locking claw part 20b, 21b, 40a, 40b Inclined surface 32, 37 Shutter release member

Claims (2)

[Claims] 1. A disk is rotatably housed inside,
A case provided with an opening through which the components of the drive device enter, and movable in both directions between a closed position mounted on the case and closing the opening and an open position on both sides releasing the opening. A shutter mounted on the case, a lock position for locking movement of the shutter in directions opposite to each other, and a lock release position for unlocking the shutter. A pair of shutter lock members to which a return force for returning to a position is applied, wherein one of the shutter lock members is unlocked by a shutter release member of the drive device during the mounting process to the drive device, and A disk cartridge in which the shutter is moved to an open position in the direction of the other shutter lock member; A slide surface which is open to the front and both sides and on which a shutter release member of the drive device slides is provided, and each operated portion of the pair of shutter lock members is located at both outer positions of the shutter located at a closed position. The lock position of each operated part is provided at a position protruding to the front side from the slide surface, and the unlock position is set at a position protruded inward from the slide surface. A means for shifting from the locked position to the unlocked position while pushing the other shutter locking member with the shutter in the process of releasing the lock of the shutter locking member and moving the shutter to the open position. cartridge. 2. The disk cartridge according to claim 1, wherein the means for changing the other shutter lock member from the lock position to the unlock position during the movement of the shutter to the open position includes the shutter and both outer sides thereof. A disk cartridge characterized in that at least one of the surfaces facing each of the operation units arranged on the disk is configured as an inclined surface.