JP3511154B2 - Disk cartridge - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disc cartridge which has positioning recesses on both sides of a rear portion of a case and has an inlet / outlet for inserting / removing a disc on the rear peripheral surface of the case.

[0002]

2. Description of the Related Art Japanese Unexamined Patent Publication (Kokai) No. 5-242626 discloses a disk cartridge of this type in which a door is opened over the entire width of the rear end face of the case and a door provided with a fitting wall for fitting the case into the door. Is blocking. The lid is pivotally supported at the rear corner of the case and can swing open from the closed position over 180 degrees. A pair of recesses for positioning are provided on both sides of the rear part of the case. The facing distance between the two recesses is smaller than the diameter dimension of the disc. Therefore, the disk can be taken in and out by cutting out the peripheral wall portion of the recess. The fitting wall of the lid is provided with an escape recess that matches the positioning recess, and the escape recess closes the notch opening to prevent dust and the like from entering the case.

[0003]

As described above, in the disk cartridge having the fitting wall that fits inside the entrance and exit, the lid body is opened 180 degrees or more from the closed position, and the entire fitting wall is inserted into the disk. The disk cannot be taken in and out unless it is retracted to the outside of the locus of taking in and out, and there is a problem in that the opening and closing stroke of the lid is large. This means that, for example, it is difficult to put in and take out the disc in a narrow space. Since it is necessary to swing and open the lid body, a gap must be provided between the swinging tip of the fitting wall and the notch opening, and there is also a disadvantage that dust easily enters the case through this gap. There is a risk that the disc cartridge may be loaded into the player with the lid not completely closed. In such a case, an accident such as a failure of the loading mechanism or damage to the lid cannot be avoided.

An object of the present invention is to provide a disc cartridge in which the opening / closing stroke of the lid can be made small and the disc can be easily taken in and out. An object of the present invention is to provide a disc cartridge in which a peripheral side wall that defines a positioning recess is integrally provided with a lid body and can reliably prevent dust from entering when the lid body is closed. An object of the present invention is to provide a disc cartridge in which a pair of positioning recesses are provided on both sides of the rear of the case, and the peripheral side walls of each recess can be retracted to the outside of the case by using the opening / closing operation of the lid, and a disc can be taken in and out. Another object of the present invention is to provide a disk cartridge having a lid structure that can easily perform the above.

[0005]

DISCLOSURE OF THE INVENTION In the disk cartridge of the present invention, positioning recesses 8 are provided on both sides of the rear part of a case 2 for rotatably housing a disk 1. Case 2
The rear peripheral surface has an entrance / exit 6 that is opened and closed by a lid 7, and the disc 1 can be put into and taken out of the case 2 through the entrance / exit 6. The lid 7 is provided with a main wall 9 that opens and closes the entrance and exit 6, and a recess wall 12 that defines one positioning recess 8. A closing body 18 having a recess wall 19 that defines the other positioning recess 8 is provided. The closing body 18 is supported by the case 2 so as to be displaceable between a use position in which the case 2 is housed in a predetermined position and an opening position in which the recess wall 19 projects outside the case 2 and retracts the recessed wall 19 to the outside of the track for taking in and out the disc 1. Has been done. Recess wall 12 of each of lid 7 and closing body 18
・ Open 19 to insert and remove the disk 1.

Specifically, each of the lid 7 and the closing body 18 is swingably opened and closed via shafts 10 and 21 at the adjacent portions thereof. An interlocking gear 23 that meshes with the lid 7 and the closing body 18 and rotates around the shafts 10 and 21.
24 are provided integrally with each other, and the closing body 18 is opened / closed in conjunction with the opening / closing operation of the lid body 7.

The lid 7 is supported by the case 2 so that it can be slidably opened and closed along the doorway 6. The closing body 18 is swingably and rotatably supported by the case 2 about a shaft 21 provided on one of the front and rear sides of the recess wall 19. Main wall 9 and closing body 18 of lid 7
A first engaging portion 31 and a second engaging portion 32 that are engaged with each other to hold and fix the closing body 18 at the use position are provided between the first and second engaging portions.

The lid 7 is provided with a shaft 10 provided in front of the recess wall 12.
The case 2 is swingably opened and closed via Closing body 1
A case 8 is swingably and rotatably supported by a case 2 around a shaft 21 provided at the front of the recess wall 19. Closing body 18 and case 2
A concave-convex engaging portion 39 that engages with and holds the closing body 18 in the use position is provided between and. Further, between the closing body 18 and the main wall 9 of the lid body 7, an engaging claw 37 and an engaging protrusion 38 for holding the lid body 7 in a closed state are provided.

[0009]

Since the lid 7 for opening / closing the entrance / exit 6 is provided with the recess wall 12 for partitioning the positioning recess 8 on one side, the recess wall 12 of the disc 1 is opened by opening the cover 7. It is possible to evacuate out of the locus of movement. Further, a recess wall 19 for partitioning the other positioning recess 8 is provided on the closing body 18, and the closing body 18 is opened, whereby the recess wall 19 can be similarly retracted.

Since each of the left and right recessed walls 12 and 19 is individually retracted to the outside of the locus of loading and unloading of the disk 1,
The opening / closing stroke of the lid 7 and the closing body 18 can be reduced. In the state where the lid 7 and the closing body 18 are closed, the openings 8a facing the recesses 8 are closed by the recess walls 12 and 19,
It is possible to reliably prevent the entry of dust and the like. Lid 7 and closure 18
According to the disc cartridge configured so that the disc can be opened and closed in conjunction with each other, the opening and closing operation of the lid body 7 and the closing body 18 at the time of taking in and out the disc 1 can be simplified and the trouble can be reduced.

[0011]

【Example】

(Embodiment 1) FIGS. 1 to 4 show an embodiment of an optical disk cartridge according to the present invention. In FIG. 2, the optical disk cartridge includes a disk 1 on which signals such as video, audio, and information are recorded on both upper and lower surfaces, a case 2 for rotatably housing the disk 1, and a horizontal center of the upper and lower walls of the case 2. The shutter 3 is configured to slide the signal reading window 5 through which the signal reading window 5 is opened and closed to the left and right, and the lock mechanism 4 that locks and holds the shutter 3 so that it cannot be slid at the closed position.

The case 2 is formed by joining and fixing a plastic-molded upper case 2a and lower case 2b in a lid-fitting manner, and an inlet / outlet for inserting / removing the disk 1 over the entire left and right width of the rear end surface of the case 2. A lid 7 that opens 6 and opens and closes the entrance 6 is swingably supported by the case 2. Positioning recesses 8 are provided near the rear ends of both sides of the case 2. The lock mechanism 4 includes a lock arm 4a that is urged to rotate by a spring (not shown) and a release arm 4b that unlocks the lock arm 4a against the spring. The releasing arm 4b is rockably operated by a releasing piece on the player side.

The lid 7 is made of a plastic molded product having a main wall 9 for opening and closing the entrance 6, and an upper and lower shaft 10 integrally provided at the right end of the lid 7 is swingably supported by the upper and lower cases 2a and 2b. . The corner wall 11 is continuous with the swinging tip of the main wall 9.
Then, a U-shaped recess wall 12 for partitioning the recess 8 is provided, and finger hooks 13 are projected above and below the main wall 9 adjacent to the corner wall 11. Edge walls 14 that are received and supported by the rear end faces of the upper and lower cases 2a and 2b are provided above and below the rear edge of the main wall 19, respectively.

With the lid 7 closed, the doorway 6
Is closed by the main wall 9, and the opening 8a (see FIG. 3) between the upper and lower cases 2a and 2b facing the recess 8 is closed by the corner wall 11 and the recess wall 12 without a gap. . As shown in FIG. 1, the oblique joining surface 16 provided at the front end of the recess wall 12 is the receiving surface 1 provided at the peripheral side walls of the upper and lower cases 2a and 2b.
It is received without a gap at 7. When the lid 7 is opened around the shaft 10, the recess wall 12 is moved to the upper and lower cases 2a.
It can be pulled out from 2b and positioned outside the locus of loading and unloading of the disc 1. The opening angle of the lid 7 at this time is 90 to 120 degrees.

A closing member 18 is provided in front of the swinging base end of the main wall 9 so as to open and close the positioning recess 8 on the right side. The closing body 18 is made of a plastic molded product and has a U-shaped recess wall 19 that defines the positioning recess 8.
The boss 20 is integrally formed at the rear portion. A shaft 21 is provided above and below the boss 20, and the shaft 21 is attached to the upper and lower cases 2a and 2a.
It is rockably supported by b. The closing body 18 opens and closes in conjunction with the opening and closing operation of the lid body 7. Therefore, the interlocking gear 23 is formed on the peripheral surface of the boss 22 at the swinging base end of the main wall 9, and the closing body 18
An interlocking gear 24 that meshes with the gear 23 is formed on the peripheral surface of the side boss 20. Both interlocking gears 23 and 24 are shaft 1 respectively
It is formed concentrically with 0.21, and when the lid body 7 is opened, the lid body 7 rotates in opposite directions and the closing body 18 can be opened.

With the lid 7 closed, the closure 1
The recessed wall 19 of 8 is in a use position by closing the opening 8a between the upper and lower cases 2a and 2b that is cut out to face the recessed portion 8 without a gap. At this time, the slanted joint surface 25 provided at the front end of the recess wall 19 is received by the receiving surface 17 provided on the peripheral side walls of the upper and lower cases 2a and 2b without any gap. When the lid body 7 is opened from this state, the closing body 18 rotates clockwise about the shaft 21 as shown by the imaginary line in FIG. Retract to the open position. In this embodiment, the interlocking gear 23.2
Since the gear ratio of No. 4 is set to 1: 1, the closing body 18 is strongly rotated 90 degrees from the use position to switch to the open position. Naturally, if the gear diameter of the interlocking gear 24 on the side of the closing body 18 is set large, the opening / closing stroke can be set to 90 degrees or less.

When the disk 1 is taken out from the case 2, the finger hook 13 is pinched and the entire lid 7 is pulled out from the doorway 6 and is opened counterclockwise around the shaft 10. The closing body 18 also swings open in conjunction with the lid body 7, so that the recessed walls 12 and 19 of the both bodies 7 and 18 can be positioned outside the loading and unloading path of the disc 1. In this state, by tilting the case 2 so that part of the peripheral edge of the disk 1 faces the entrance / exit 6, the disk 1 can be easily taken out of the case 2. When the disc 1 is housed in the case 2, the lid 7 is likewise opened, and the disc 1 is inserted from the doorway 6 and loaded. Finally, by closing the lid 7 and returning the closing body 18 to the use position, the entrance 6 and the openings 8a of the left and right recesses 8 are completely closed, and dust can be prevented from entering. As shown in FIG. 4, the finger hooks 13 are also press-fitted to the upper and lower walls of the upper and lower cases 2a and 2b to help maintain the lid 7 in a closed state.

(Second Embodiment) FIGS. 5 and 6 show a second embodiment of the optical disk cartridge according to the present invention. The disc cartridge here is different from that of the first embodiment in that the opening / closing structure of the lid 7 and the closing body 18 is changed. Specifically, as shown in FIG. 6, ribs 2 are provided on the upper and lower ends of the main wall 9 of the lid 7.
7, the ribs 27 are guided by guide grooves 28 provided on the inner surfaces of the upper and lower walls of the entrance / exit 6, and the entire lid 7 is supported so as to be slidable along the opening surface of the entrance / exit 6. A protrusion 29 for hooking a finger is provided near the rear end of the main wall 9. The closing body 18 is provided with a corner wall 30 continuously to the rear portion of the recess wall 19, and an opening / closing shaft 21 is projectingly provided on the upper and lower surfaces thereof.

In order to hold and fix the closing body 18 in a use position so that it cannot be opened, a groove-shaped first member is formed on the inner surface of the right end of the main wall 9.
An engaging portion 31 is provided, and a second engaging portion 32 that is engaged with the first engaging portion 31 by being recessed is provided so as to project rearward from the shaft 21. Both engaging portions 31 and 32 are completely engaged when the lid 7 is in the closed position. When the lid 7 is slid in the opening direction to the left, the closing body 18 swings open about the shaft 21 until the second engaging portion 32 finishes releasing the engagement with the first engaging portion 31. Then, the recess wall 19 is moved to the outside of the case 2. That is, the closing body 18 can be opened in conjunction with the lid body 7.

The door 7 can be closed by sliding the lid 7 in the opposite direction. At this time, depending on the position of the second engaging portion 32, the closing body 18 can be interlocked with the lid body 7 to return and swing toward the use position side. Even when only the lid body 7 is closed first, the closing body 18 is pushed into the recess 8 to engage the second engaging portion 32 with the first engaging portion 31 and hold it in the use position. it can. Since the other structure is the same as that of the first embodiment, the description thereof will be omitted.

(Embodiment 3) FIGS. 7 and 8 show Embodiment 3 of the optical disk cartridge according to the present invention. There, a triangular base 35 is extended to the front of the recess wall 12 provided in the lid body 7, and the shaft 10 provided above and below the base 35.
Is supported by the upper and lower cases 2a and 2b so that the lid 7 can be swung open and closed. In the closing body 18, the recess wall 19
A base 36 is extended to the front part of the above, and the shaft 21 protruding above and below the base 36 is swingably supported by the upper and lower cases 2a and 2b.

In order to hold and fix the lid 7 in the closed state,
An uneven engaging portion 39 is provided between the base 36 of the closing body 18 and the joint surface of the lower case 2b to hold the closing body 18 in the closed position. Further, an engaging claw 37 is provided at the rear end of the corner wall 30 of the closing body 18, and an engaging protrusion 38 is provided on the inner surface of the main wall 9 of the lid 7. The engaging claw 37 enters the inside of the swing locus of the engaging protrusion 38 and prevents the lid body 7 from freely swinging open. In this embodiment, the lid 7 can be opened by operating the projection 40 provided on the outer surface of the corner wall 30 to open the closing body 18. That is, the closing body 18 also serves as a closing lock member of the lid body 7. Since the other structure is the same as that of the first embodiment, the description thereof will be omitted.

In addition to the above, each of the left and right recesses 8 can be opened and closed by a symmetrically provided closing body 18, and the lid 7 can be structured to open and close only the inlet / outlet 6.
The closing bodies 18 in the second and third embodiments can be urged to rotate toward the use position by weak springs. In this case, the closing body 18 swings open in conjunction with the operation of taking in and out the disc 1, and the closing body 18 can be returned to the use position and swing at the same time when the disc 1 passes. The recess 8 may be formed in a semicircular shape or a trapezoidal shape.

[0024]

According to the present invention, one of the recess walls 12 and 19 of the recess 8 that interferes with the loading and unloading of the disk 1 is provided integrally with the lid body 7 and retracted outside the case when the lid body 7 is opened. On the other hand, the other is provided on the closing body 18 so that the closing body 18 can be retracted out of the case by opening the closing body 18. Therefore, as compared with the conventional lid body having the fitting wall that closes the positioning recess from the inside of the case, the lid body 7
The opening / closing stroke can be reduced, and for example, in the case of the lid 7 that swings and opens / closes, the opening / closing angle can be halved to about 90 degrees, and the disk 1 can be taken in and out more easily. In the state where the lid body 7 and the closing body 18 are closed,
Since the opening 8a of the recess 8 can be closed by the recess walls 12 and 19 without any gap, it is possible to reliably prevent the intrusion of dust and the like and prevent the occurrence of the read / write error of the signal information due to the attachment of the dust and the like.

[Brief description of drawings]

FIG. 1 is a cross-sectional plan view showing an entrance / exit structure of a disc cartridge.

FIG. 2 is a plan view of a disc cartridge.

FIG. 3 is a perspective view showing a relational structure between a positioning recess and a lid.

4 is a cross-sectional view taken along the line AA in FIG.

FIG. 5 is a cross-sectional plan view of essential parts of a disk cartridge according to a second embodiment.

6 is a sectional view taken along line BB in FIG.

FIG. 7 is a cross-sectional plan view of relevant parts of a disk cartridge according to a third embodiment.

8 is a cross-sectional view taken along line CC in FIG.

[Explanation of symbols]

1 disc 2 cases 6 doorways 7 Lid 8 recess 9 Main wall 12 ・ 19 Recessed wall 18 Closed body 23/24 gears

Claims (3)

(57) [Claims] 1. Positioning recesses 8 are provided on both sides of a rear portion of a case 2 that rotatably accommodates a disk 1.
Leaving the disc 1 over the left and right entire width of the end face of the case 2
The doorway 6 for inserting and opening is open.
A disc cartridge having a lid body 7 for opening and closing 6 , wherein the right end of the lid body 7 can freely swing on the case 2 via a shaft 10.
The main wall 9 which is supported by and which opens and closes the entrance and exit 6, and the shaking of the main wall 9.
And a recess wall 12 which is provided at the moving tip and defines one of the recesses 8 for positioning. When the lid 7 is opened around the shaft 10, the recess wall 1 is opened.
Loosening 2 from case 2 and moving track of disk 1
A closing body 18 having a recess wall 19 that defines the right positioning recess 8 is provided adjacent to the front of the swing base end of the main wall 9.
The closing body 18 is displaceable between a use position in which it is housed in a predetermined position in the case 2 and an open position in which the recess wall 19 projects outside the case 2 and retracts the recess wall 19 to the outside of the track for taking in and out the disc 1. as the shaft rear of the boss 20 of the recess wall 19 of the case 2 2
1 and is supported via the boss 22 at the swinging base end of the main wall 9 of the lid 7 and the closing body 18.
Around the shafts 10 and 21 by meshing with the boss 20.
The interlocking gears 23 and 24 that rotate to
It is possible to open and close the closing body 18 in conjunction with the opening and closing operation of the lid body 7.
Disk cartridge, characterized in that that. 2. A case for rotatably housing a disk 1.
2 are provided with positioning recesses 8 on both sides of the rear part,
Eject the disk 1 over the entire width of the rear end surface of the case 2.
The doorway 6 for inserting and opening is open.
A disc cartridge having a lid 7 for opening and closing 6
The lid 7 is positioned on one side of the main wall 9 that opens and closes the doorway 6.
And a recess wall 12 that defines a recess 8 for the purpose of opening and closing, and the entire lid 7 slides along the opening surface of the doorway 6 to open and close.
The main wall 9 is supported by the case 2 so as to be able to have a recess wall 19 that defines the other positioning recess 8
A closing body 18 is provided adjacent to the front of the main wall 9.
The closing body 18 is used at a predetermined position within the case 2.
Then, the recess wall 19 is projected to the outside of the case 2 and the disc 1 is projected.
It can be displaced to and from the open position where it retracts outside the insertion path.
Shafts 21 provided on either side of the front and rear of the recess wall 19
It is supported on the case 2 so that it can be freely opened and closed.
The main wall 9 and the closing body 18 of the lid body 7 engage with each other.
The first engaging portion 31 and the second engaging portion 32 are provided, and when the lid 7 is at the closed position, the first engaging portion 31 and the second engaging portion 31 are provided.
Engages with the mating part 32 to hold and fix the closing body 18 in the use position
Then, when the lid 7 is slid in one opening direction, the closing body is closed.
The second engaging portion 32 of 18 and the first engaging portion 31 of the main wall 19
Until the disengagement is completed, the closing body 18 is centered on the shaft 21.
Then, it is swung to the open position, and the closing body 18 can be opened and closed in conjunction with the opening and closing operation of the lid body 7.
A disc cartridge characterized in that 3. A case for rotatably housing a disk 1.
2 are provided with positioning recesses 8 on both sides of the rear part,
Eject the disk 1 over the entire width of the rear end surface of the case 2.
The doorway 6 for inserting and opening is open.
A disc cartridge having a lid 7 for opening and closing 6
The lid 7 is provided on the main wall 9 that opens and closes the entrance and exit 6, and on the main wall 9.
Recessed wall 12 that defines one of the positioning recesses 8
And a shaft 10 provided at the front of the recess wall 12
And is supported by the case 2 so as to be swingable and openable. When the lid 7 is opened around the shaft 10, the recess wall 1
Loosening 2 from case 2 and moving track of disk 1
Has a recess wall 19 that can be positioned outside the other and defines the other positioning recess 8
A closing body 18 is provided adjacent to the front of the main wall 9.
The closing body 18 is used at a predetermined position within the case 2.
Then, the recess wall 19 is projected to the outside of the case 2 and the disc 1 is projected.
It can be displaced to and from the open position where it retracts outside the insertion path.
The shaft 21 provided in the front of the recess wall 19 so that
It is swingably and rotatably supported by the space 2 and is closed between the closing body 18 and the case 2 at the use position.
A concave-convex engaging portion 39 for engaging and holding the body 18 is provided.
The lid 7 is kept closed between the closure 18 and the main wall 9 of the lid 7.
The engaging claw 37 and the engaging projection 38 to be held are provided.
Characteristic disk cartridge .