JPH09251749A - Disk cartridge - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a disk cartridge capable of preventing unintentional opening of a lid body and easily opening the same by providing a lid opening operation section in the peripheral surface of the lid body exposed to a case outer surface while the lid body is closed. SOLUTION: Operation sections 17 and 29 are formed to be recessed in the rear corner parts of a lid body 7 exposed to the outer surface of a case 2 while the lid is closed. No foreign matter is caught by the operation sections 17 and 29. In the entrance/exit section 6 of the case 2 facing the operation sections 17 and 29, a relief section 30 is notched in one of upper and lower surface walls and when the lid is opened, the upper and lower surface walls of the entrance/exit section 6 are made not to interfere with the opening operations of the operation sections 17 and 29. The relief section 30 is formed by forming a part of the corner part of the case 2 to be circular-arc. The lid body 7 is composed of a main opening section 6a, a first lid 7A for opening/closing a side opening 6b and a second lid 7B for opening/closing the other side opening 6b by rocking. A gap E for facilitating the opening operation of the operation section 29 is formed in the vicinity between the operation section 29 of the second lid 7B and the first lid 7A.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk cartridge of the type having a disk inlet / outlet on the peripheral side surface of a case and closing the door with an openable / closable lid.

[0002]

2. Description of the Related Art Japanese Unexamined Patent Publication No. 5-242626 discloses a disk cartridge of this type. There is only a slight difference between the width of the case and the diameter of the disc.Therefore, the lid has a fitting wall that fits inside the case by opening the disc inlet and outlet over the entire width of the rear end surface of the case. The body is blocking the doorway. The lid is rotatably supported by a shaft provided at the rear corner of the case and can swing open from the closed position over 180 degrees. Gripping portions for opening and operating the lid are provided on the upper and lower surfaces of the swinging tip of the lid.

[0003]

The gripping portion is exposed on the upper and lower surfaces of the case when the lid is closed. Therefore, another object is easily caught in the grip portion, and the lid body may be inadvertently opened when, for example, one of the disc cartridge groups aligned and stored in the shelf is to be extracted. In the worst case, the disc may slip off the case and scratch the board.

An object of the present invention is to provide a disc cartridge which can prevent the lid body from being opened unexpectedly and can reliably maintain the lid closed state unless the user operates the lid body with a clear intention. . An object of the present invention is to provide a disc cartridge which can easily open and operate the lid body and can prevent the lid body from being opened accidentally in the lid closed state.

[0005]

As shown in FIG. 2, a disk cartridge according to the present invention has a case 2 in which a disk 1 is rotatably accommodated, and a door 6 for taking in and out the disk 1 and a door 6 for opening and closing the disk 1 can be opened and closed. And a lid 7 that closes up. Operation parts 17 and 29 for opening the lid 7 are provided on the peripheral surface of the lid 7 exposed to the outer surface of the case when the lid is closed.

Specifically, as shown in FIGS. 1 and 3, a relief portion 30 for facilitating the opening operation of the operating portions 17 and 29 is provided on at least one of the upper and lower walls of the doorway 6 facing the operating portions 17 and 29. Form a notch. The operation portions 17 and 29 are formed in a concave shape on the outer peripheral surface of the lid body 7 facing the corner portion of the case 2. The escape portion 30 is formed by rolling the corner portion of the case 2 into a partial arc shape. The inlet / outlet 6 is formed in a U-shape by a main opening 6a opened to the rear surface of the case and side openings 6b and 6b continuous to both ends of the main opening 6a and opened to the rear of the case side surface. The lid 7 includes a first lid 7A that opens and closes the main opening 6a and one side opening 6b, and a second lid 7B that swings and opens the remaining other side opening 6b. Second facing the corner of Case 2
The operation portion 29 is formed in a concave shape on the peripheral surface of the lid 7B. Second lid 7B
Between the operating portion 29 of the first lid 7A and the operating portion 29 of
A gap E is provided to facilitate the opening operation.

[0007]

【Example】

(First Embodiment) FIGS. 1 to 4 show a first 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. A shutter 3 that slides a signal reading / writing window 4 provided in each of them to the left and right, and a shutter 3
Is configured with a lock mechanism that locks and holds the slide lock at the central closed position so that it cannot slide.

The case 2 is formed by joining and fixing a plastically molded upper case 2a and lower case 2b in a lid-fitting manner. An opening / closing opening 6 for opening / closing the disk 1 is opened at the rear portion of the peripheral side surface of the case 2, and a lid 7 for closing the opening / closing opening 6 is supported by the case 2 so as to be openable / closable. Positioning recesses 8 are provided in a U shape near the rear ends of both sides of the case 2. In FIGS. 3 and 4, the entrance / exit 6 has a main opening 6a that occupies the entire left and right width of the rear end surface of the case 2, and side openings 6b and 6b that are open to the rear of the left and right side walls of the case 2 including the left and right recesses 8 It has a U-shaped opening when viewed.

The lid 7 is formed by combining a first lid 7A and a second lid 7B, which are separately molded by plastic. The first lid 7A opens and closes the main opening 6a and the left (one) side opening 6b, and the second lid 7B opens and closes the right (other) side opening 6b.

2 and 4, the first lid 7A has a rear wall 10 that closes the entire main opening 6a, a side wall 11 that closes the left side opening 6b, and a front wall 12 that is continuous with the front end of the side wall 11.
And the restriction wall 13 curved in a partial arc shape along the peripheral wall of the disk 1 are continuously formed in a circular shape to form a hollow frame shape.
The first lid 7A has a main opening 6a and a left side opening 6b by projecting a leg piece 14 on the front portion of the front wall 12 and rotatably supporting the leg piece 14 from a lower case 2b by a standing shaft 15. At the same time, it can be swung between a closed position in which it is closed and an open position in which the main body rotates around the shaft 15 clockwise by 90 degrees or more to open the main opening 6a and the side opening 6b. The shaft 15 is provided as close to the case side end as possible. A notch recess 16 is provided in the middle of the side wall 11 corresponding to the recess 8 of the upper and lower cases 2a and 2b. The first lid 7A is provided near the left end of the rear surface of the rear wall 10.
The operation part 17 for opening and operating the is formed to be recessed.

As shown in FIG. 3, the second lid 7B has a side wall 19 which closes the right side opening 6b, and front and rear walls 20 and 2 which are projected in parallel from the front end and the rear portion of the side wall 19 toward the inside of the case.
1 and the restriction wall 22 formed in a partial arc shape are continuously formed in a circular shape, and are formed in a substantially trapezoidal hollow frame shape when viewed from a plane. By extending the leg piece 23 to the front part of the front wall 20 and rotatably supporting the leg piece 23 from the case 2b by the shaft 15 provided upright, the second lid 7B has a closed position where it closes the right side opening 6b, The entire body can be swung about the shaft 15 in the counterclockwise direction by 90 degrees or more and can swing between the open position where the side opening 6b is opened. The shaft 15 is also provided as close to the case side end as possible. A notch recess 24 is provided in the middle of the side wall 19 corresponding to the recess 8 of the upper and lower cases 2a and 2b.

In order to maintain the lid closed state, the first lid 7A
A lock mechanism is provided between the second lid 7B and the second lid 7B. In FIG. 3, the lock mechanism includes a wedge-shaped locking claw 26 protrudingly provided adjacent to the rear portion of the cutout recess 24 of the second lid 7B and the first lid 7B.
The lock concave portion 27 is provided on the inner surface of the swing tip of A, that is, the inner surface of the right end of the rear wall 10. The lock claw 26 engages with the inclined step portion 28 at the inner rear end of the lock concave portion 27, and prevents the first lid 7A from freely swinging open. In order to open and operate the second lid 7B, the rear surface of the lock claw 26 is tilted to form a wedge-shaped gap E between the lock claw 26 and the lock recess 27, as shown in FIG. The operating portion 29 is formed in a recessed portion near the side end of the inclined surface of the lock claw 26 facing the above.

The first lid 7A and the second lid 7B are provided for each operating portion 1.
Put the fingertip or nail on 7 ・ 29, or lock a coin to open it. At this time, since the operating portions 17 and 29 are recessed inward from the opening edge of the entrance / exit 6, the upper and lower walls of the entrance / exit 6 interfere with the operation. In this way, in order to prevent the upper and lower walls of the entrance / exit 6 from interfering with the operation when the lid is opened, the escape portion 30 facing the operation portions 17 and 29 is formed on the case 2 side. More specifically, as shown in FIG. 1, the corner portions on both sides of the rear portion of the upper case 2a are rounded into a partial arc shape to form notches in the escape portion 30, and the upper surfaces of the operation portions 17 and 29 are opened. The corners removed by providing the relief 30 are shown in phantom in FIGS. 3 and 4.

When the disk 1 is taken out from the case 2, a fingertip is put on the operation portion 29 to release the engagement between the lock claw 26 and the lock concave portion 27, and the entire second lid 7B is centered around the shaft 15 in the case. Swing open to the outside. Further, the operation unit 1
With a fingertip on 7, the entire first lid 7A is swung open around the shaft 15 to the outside of the case. At this time, each operation unit 1
Since the escape portion 30 is provided to face 7 ・ 29, each lid 7
The opening operation of A and 7B can be done easily without any trouble. Since the escape portion 30 is formed in the shape of a partial arc using the corner portion, it is possible to prevent other objects from being caught in the escape portion 30.

The first and second lids 7A and 7B each have about 90
In the state of swinging open, the left and right side openings 6b respectively
-The doorway 6 is largely opened by projecting outward from 6b. In this state, the case 2 is tilted so that a part of the peripheral edge of the disk 1 faces the entrance 6 so that the disk 1 can be easily taken out from the case 2. The disk 1 can be stored by following the reverse procedure. When the lid is closed, each operation unit 17
Since 29 is located on the rear surface of the case and is further recessed inside the outer line of the case 2, it is possible to reliably prevent other objects from being caught by the operation parts 17 and 29, and the lid 7 is fixed when handling the disc cartridge. It can eliminate the careless opening.

(Second Embodiment) FIGS. 5 and 6 show a second embodiment of the present invention in which the lid structure is modified. The first lid 7A in the first embodiment is provided at the main opening 6a of the doorway 6. A case 2 is slidably opened and closed along and guided and supported by the case 2. More specifically, as shown in FIG. 6, ribs 32 are provided on the upper and lower end surfaces of the rear wall 10 so as to project.
Is guided by guide grooves 33 provided on the inner surfaces of the upper and lower walls facing the main opening 6a of the case 2 so that the first lid 7A can be slid and opened. An operation portion 17 for slide operation is formed in a recess near the left and right ends of the rear surface of the rear wall 10, and an escape portion 30 is formed in an upper wall facing each operation portion 17. Second
The lid 7B was formed in a trapezoidal block shape, and was pivotally supported by a shaft 15 so as to be swingable.

As a locking mechanism therefor, a first engaging portion 34, which is recessed on the inner surface of the slide end of the rear wall 10, and a second engaging portion
The lid 7B side is provided with a protrusion on the rear surface of the cutout recess 24,
The second engaging portion 35 engages with the engaging portion 34. First
-When the second lids 7A and 7B are in the closed position, both engaging portions 3
4.35 are engaged with each other to maintain the lid closed state.
When the first lid 7A is opened and slid to the left from this state, the main opening 6a and the left side opening 6b can be opened.
The first lid 7A can be closed by sliding it in the opposite direction. By pressing the second lid 7B into the side opening 6b immediately before the closed state, the second engaging portion 35 is engaged with the first engaging portion 34, and the closed state of both lids 7A and 7B can be maintained. .

(Third Embodiment) FIG. 7 shows a third embodiment of the present invention in which the doorway 6 is opened and closed by one lid 7. here,
A shaft 7 provided at the front of the left side opening 6b supports the lid body 7 so that the lid body 7 can swing and open and close, and an operating portion 17 is formed in a recess at the right end of the rear wall 10 of the lid body 7 to form Relief 3 at the rear right corner
0 was provided. A pair of left and right side walls 1 is provided on the left and right of the inner surface of the lid body 7.
1, a front wall 12, a restriction wall 13 and the like are provided.

(Fourth Embodiment) FIG. 8 shows a fourth embodiment of the present invention in which the lid body 7 is composed of a first lid 7A and a second lid 7B which are bilaterally symmetrical.
An embodiment is shown, in which the operating portions 17 are formed in the corners of the rear wall 10 of the respective lids 7A and 7B, and the escape portions 30 are formed along the swing locus of the operating portions 17. .

In addition to the above-described embodiment, the escape portion 30 can be formed on each of the upper and lower walls facing the entrance 6. Operation part 17
Each of 29 can be formed by a plurality of recesses. For example, in addition to the operation portion 27 in the first embodiment, a similar recess can be provided on the outer surface of the lock claw 26 to form the operation portion 29.

[0021]

According to the present invention, the operating portions 17 and 29 for opening and closing the lid 7 are provided on the peripheral surface of the lid 7 exposed on the outer surface of the case when the lid is closed, so that the disc cartridge can be handled with ease. It was made possible to prevent objects from getting caught in the operating parts 17 and 29. This prevents the lid 7 from being opened accidentally and the disc 1 slipping out of the case 2 when one of the disc cartridge groups aligned and stored on the shelf is to be extracted and operated. The scratches on the disc 1 due to caution can be eliminated. Since the escape portion 30 is provided so as to face the operation portions 17 and 29, the opening operation of the lid body 7 can be easily performed even though the operation portions 17 and 29 are provided at a position where other objects are not easily caught, and the lid body can be easily opened. At the same time satisfying the trade-off requirements of preventing the unexpected opening of 7 and facilitating the opening operation of the lid 7,
The usability of the disc cartridge can be improved.

[Brief description of drawings]

FIG. 1 is a plan view of a main part in a first embodiment.

FIG. 2 is a partially cutaway plan view of the first embodiment.

FIG. 3 is an exploded perspective view showing a structure around a second lid in the first embodiment.

FIG. 4 is an exploded perspective view showing a structure around a first lid in the first embodiment.

FIG. 5 is a cross-sectional plan view of essential parts in the second embodiment.

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

FIG. 7 is a plan view of a main part of the third embodiment.

FIG. 8 is a plan view of an essential part of the fourth embodiment.

[Explanation of symbols]

 1 Disc 2 Case 6 Entry / Exit 6a Main Opening 6b Side Opening 7 Lid 7A 1st Lid 7B 2nd Lid 17/29 Operating Part 30 Relief E E Gap

Claims (4)

[Claims] 1. A doorway 6 for loading and unloading the disk 1 on and from a peripheral side surface of a case 2 which rotatably houses the disk 1.
A lid 7 for opening and closing the entrance 6 is provided, and operation portions 17 and 29 for opening the lid 7 are provided on the peripheral surface of the lid 7 exposed to the outer surface of the case when the lid 6 is closed. Disc cartridge. 2. The disk according to claim 1, wherein an escape portion 30 for facilitating the opening operation of the operating portions 17 and 29 is cut out on at least one of the upper and lower walls of the entrance / exit 6 facing the operating portions 17 and 29. cartridge. 3. The operating portions 17 and 29 are formed in a concave shape on the outer peripheral surface of the lid body 7 facing the corner portion of the case 2, and the escape portion 30 is formed by rounding the corner portion of the case 2 into a partial arc shape. The disk cartridge according to claim 2, wherein 4. The inlet / outlet 6 is formed in a U-shape by a main opening 6a opened to the rear surface of the case and side openings 6b and 6b continuous to both ends of the main opening 6a and opened to the rear of the side surface of the case. The lid body 7 includes a first lid 7A that opens and closes the main opening 6a and one side opening 6b, and a second lid 7B that swings and opens the remaining other side opening 6b. The operation portion 29 is formed in a concave shape on the peripheral surface of the second lid 7B facing the portion, and the opening operation of the operation portion 29 is performed between the operation portion 29 of the second lid 7B and the adjacent portion of the first lid 7A. 4. The disk cartridge according to claim 2, wherein a gap E for facilitating is provided.