JPH09293354A - Disk cartridge - Google Patents

Abstract

PROBLEM TO BE SOLVED: To identify whether a disk can be recorded when a disk cartridge has an opening section for taking in and out the disk. SOLUTION: An opening section 5 for taking in and out a disk in a main body case 1 is closed by a cover 7. A detecting hole 21 for identifying whether recording can be made and an operating port are provided in the main body case so as to be faced to the cover 7. A wall-thickness removed space section 13 is formed to the cover 7, and a recording preventive member 20 with an operating section 30 and a valve body 26 is pivoted and connected into the wall-thickness removed space section 13 in a freely horizontally movable manner around a pivotal shaft 32. The operating section 30 of the recording preventive member 20 is faced to the operating port when the cover 7 is closed, the detecting hole 21 can be opened and closed by the valve body 26 by rotating and operating the recording operating member 20 by the operating section 30, and data can be recorded with the detecting hole 21 closed, and cannot be recorded with it open.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disc cartridge in which a disc, which is a recording medium such as an optical disc or a magneto-optical disc, is removably housed in a main body case.

[0002]

2. Description of the Related Art A disk cartridge of this type is disclosed in Japanese Patent Laid-Open No. 5-242626. There, an opening is provided at the rear end of the main body case to allow the disk to be taken in and out for replacement, and the opening is closed with a lid.
The lid is horizontally rotatable about a pivot on a plane parallel to the plane of the body case. A recording prevention member and a detection hole (engagement hole) are provided in the lid in order to determine whether or not recording on the disc is possible. A fitting recess is provided on the edge of the main body case on the opening side, and the recording preventing member and the detection hole are exposed to the fitting recess. Since the recording prevention member is not provided on the main body case side but is provided on the lid, it is not necessary to secure an installation space for the recording prevention member on the main body case side, so that the recording prevention member can be made compact and the recording prevention member is slidably supported. There is no need to provide a guide member for
There is an advantage that the inside of the main body case can be made a smooth surface, and the disc can be taken in and out from the main body case without damaging it.

[0003]

However, in the above-mentioned disc cartridge in which not only the recording prevention member but also the detection hole is provided in the lid, the lid is apt to rattle by repeating opening and closing, which causes the positional accuracy of the detection hole to be incorrect. Cheap. Further, the fitting concave portion of the main body case needs to be formed relatively large in order to expose the recording prevention member and the detection hole to the outside, which causes a decrease in strength of the main body case.

Therefore, an object of the present invention is to provide a disk cartridge having a recording prevention member on the lid as described above.
An object of the present invention is to provide a disk cartridge that can secure the position accuracy of the detection holes and the strength of the main body case. It is an object of the present invention to provide a disc cartridge that can be easily opened / closed by reducing the weight of the lid. An object of the present invention is to provide a disc cartridge which can simplify the assembling of the recording prevention member to the lid.

[0005]

In the disk cartridge of the present invention, an opening 5 for loading / unloading a disk is provided on one side surface 8 of a main body case 1 in which a disk 2 as a recording medium is rotatably accommodated. A lid 7 that opens and closes the opening 5 is mounted on a plane parallel to the plane of the main body case 1 so as to be horizontally rotatable around a pivot 17. The recording prevention member 20 is attached to the lid 7, and the main body case 1 is provided with a detection hole 21 for determining whether or not recording is possible, which is opened and closed by the recording prevention member 20.

The opening 5 is one side surface 8 of the body case 1.
And a main surface opening 5a that is opened over the entire length of the one side surface 8, and side surface openings 5b and 5b that are opened at the ends of the other side walls 6 and 6 that are adjacent to both ends of the one side surface 8 near the one side surface 8. On the other hand, the lid 7 is formed to extend at a right angle from one end of the main surface wall 9 that closes the main surface opening 5a by closing the main surface opening 5a therein, and closes the side surface opening 5b by entering the inside thereof. It has a side wall 10 and an inner peripheral wall 11 formed in an arc shape along the circumference of the disc 2 on the inner surface side of the main surface wall 9, and the extension side end of the side wall 10 and one end of the inner peripheral wall 11 are provided. Connect with the department. Space between the main surface wall 9 and the inner peripheral wall 11
3 is provided in a vertically penetrating manner.

A detection hole 21 is formed in the lower wall 24 or the upper wall 23 of the main body case 1, and the lightening space 13 is formed in the closed state of the lid 7.
It is provided so as to face. The recording prevention member 20 is attached to the lid 7 so as to be horizontally rotatable around the pivot 32 by utilizing the lightening space portion 13 of the lid 7. Specifically, the recording prevention member 20 includes a detection hole 21 at a lower end or an upper end of a vertical main wall 25.
Is provided at one end in the front-rear direction of the main body wall 25, and the boss 29 faces the main surface wall 9 of the lid 7, the inner peripheral wall 11 or the lightening space portion 13 of the side wall 10. It is rotatably inserted through and supported by a pivot 32 that is erected on the side. The recording prevention member 20 has an operation unit 30, and the operation unit 30
Is exposed to the operation port 22 provided on the upper wall 23 or the lower wall 24 of the main body case 1. Between the recording prevention member 20 and the lid 7, means 33 and 35 for positioning and holding the recording prevention member 20 at the position where the detection hole 21 is closed and the position where the detection hole 21 is opened are provided.

[0008]

Operation: With the lid 7 closed, the operation portion 3 facing the operation port 22
When the recording prevention member 20 is rotated around the pivot 32 by 0, the valve body 26 can open and close the detection hole 21. When loaded in the disk drive, the detection member on the drive side is inserted into the detection hole 21 to normally detect the detection hole 21.
It is determined that recording is possible in the closed state and recording is impossible in the open state of the detection hole 21.

When the lid 7 is opened when the disc 2 is replaced, the recording prevention member 20 is taken out of the main body case 1 with the lid 7 still attached, so that the disc 2 is damaged without interfering with the recording prevention member 20. It can be taken in and out through the opening 5 without being added.

[0010]

1 to 4 show an embodiment of a disk cartridge according to the present invention. In FIG. 2, a disc cartridge rotatably accommodates a disc 2 such as an optical disc on which signals such as video, audio, and information are recorded on both upper and lower sides inside a thin rectangular body case 1.
The main body case 1 is made of a plastic upper case 1a and a lower case 1b that are abutted and integrally coupled to each other. The main body case 1 is used for reading and writing signals from the left and right central portions of the front side portions of the upper and lower cases 1a and 1b toward the rear. The window 3 is opened, and the window 3 is closed by a shutter 4 that slides left and right.

In FIGS. 1 and 2, an opening 5 is provided at the rear end of the main body case 1 for inserting and removing the disc 2. The opening 5 includes a main surface opening 5a formed over the entire left and right length of the rear side surface 8 of the body case 1, and side surface openings 5b and 5b opened only on the rear end side of the left and right side walls 6 and 6 of the body case 1. , It opens in a U shape in a plan view. This opening 5 is opened and closed by a lid 7.

The lid 7 is of a double-door type in which a first lid 7A and a second lid 7B, which are each made of plastic and have a symmetrical shape, are aligned at the left and right centers. First lid 7A and second lid 7B
Are respectively a main surface wall 9, a side wall 10 extending from one end of the main surface wall 9 in the left-right direction to the front at a right angle, and an arc shape along the circumference of the disk 2 on the inner surface side of the main surface wall 9. It has an inner peripheral wall 11 that is formed to regulate the position of the disk 2, and a rotation base end wall 12 that connects the front end of the side wall 10 and the front end of the inner peripheral wall 11 substantially in parallel with the main surface wall 9. The main surface wall 9 is formed so as to enter the inside of the main surface opening 5a to close it, and the side wall 10 is formed so as to enter the inside of the side surface opening 5b and close it.

Each of the lids 7A and 7B has a substantially triangular shape hollow space in plan view which is opened vertically in a portion surrounded by the main surface wall 9, the inner peripheral wall 11 and the side wall 10 in order to reduce weight and save material. By providing 13, it is formed in a hollow frame shape. The main surface wall 9 is provided with a recess 14 into which a fingertip can be hung when the lid is opened. On the outer side surface of the side wall 10, a U-shaped notch 16 corresponding to the positioning recess 15 provided near the rear end of the main body case 1 is provided.

The first lid 7A and the second lid 7B are formed by integrally projecting the pivot 17 in the vertical direction from a corner portion where the side wall 10 and the rotation base end wall 12 intersect, or a position near this corner portion. The upper and lower ends of the pivot 17 are attached to the upper and lower cases 1a and 1b.
Rotatably engages with a shaft hole (not shown) provided in the vicinity of the rear end of each side wall 6. The first lid 7A and the second lid 7B are
The main body opening 5a and the side surface opening 5b of the opening 5 are closed, respectively, and the main surface opening 5a is opened by rotating 90 degrees horizontally on a plane parallel to the plane of the body case 1 about the pivot 17. Can be switched between fully open positions.

A recording prevention member 20 is attached to the lid 7.
At this time, the recording prevention member 20 is attached to each of the first lid 7A and the second lid 7B in the case of the double-sided usage type in which the disk cartridge is turned upside down and both sides of the disk 2 are used, and in the case of the single-sided usage type, the first side is used. Lid 7A or second
Attach to either one of the lids 7B. On the other hand, as shown in FIG. 3, a detection hole 21 opened and closed by the recording prevention member 20 in the main body case 1 and an operation port 22 for operating the recording prevention member 20 have a lightening space portion when the lid 7 is closed. It is provided so as to be located in the area of 13. In that case, the detection hole 21 and the operation port 22 are provided symmetrically on the left and right sides of the upper and lower walls 23 and 24 of the main body case 1 in the case of the double-sided type,
In the case of the one-sided use type, it is provided on one of the upper wall 23 and the lower wall 24.

As shown in FIG. 4, the recording prevention member 20 is a plastic molded product, and is composed of a vertical flat plate-shaped main wall 25, a valve body 26 formed at a right angle to a lower end or an upper end of the main wall 25, and a main wall. It has a boss 29 having a shaft hole 27 formed vertically at the front end or the rear end of 25, and an operating portion 30 protruding from the upper end or the lower end of the main wall 25 on the side where the valve body 26 is not attached. On the other hand, the inner peripheral wall 1 of the first lid 7A or the second lid 7B
The boss seat 31 is formed by horizontally projecting from the lower end or the upper end on the side facing the lightening space portion 1.
The pivot 32 is vertically provided in an upward posture or a downward posture. Thus, the recording prevention member 20 is attached to the first lid 7A or the second lid 7B so as to be horizontally rotatable around the pivot 32 by inserting and supporting the pivot 32 into the shaft hole 27 of the boss 29.

As described above, the first member provided with the recording prevention member 20.
When the opening 7 of the lid 7A or the second lid 7B is closed, the operation portion 30 of the recording prevention member 20 faces the operation opening 22, so that the operation portion 30 is pinched from the outside of the main body case 1 to pivot the recording prevention member 20. By horizontally rotating around 32, the detection hole 21 can be opened and closed by the valve body 26. Detection hole 21
In the closed position or the open position of the recording prevention member 20, the convex portion 33 protruding from the pivoting front end portion of the main surface wall 25 of the recording prevention member 20 is attached to the first lid 7.
Either A or the two recesses 35, 35 provided in the partition wall 34 provided between the main surface wall 9 and the inner peripheral wall 11 along the rotation locus of the rotation tip of the main surface wall 25 on the second lid 7B. It is stopped and held by engaging one.

In the above embodiment, the convex portion 3 of the recording prevention member 20 is used.
3 and the concave portion 35 of the partition wall 34 constitute the positioning means for the recording prevention member 20, but conversely, the convex portion 33 may be provided in the partition wall 34 and the concave portion 35 may be provided in the recording prevention member 20.

If the lid 7 is a double-door type having the left and right first lids 7A and 7B as in the above-described embodiment, the turning radius can be reduced, so that a turning angle of 90 degrees is sufficient. Together with this, it is possible to further reduce the rotation space of the lid 7 required outside the main body case 1, and it is advantageous to avoid contact with other peripheral objects. However, the present invention is not limited to this, and as shown in FIG. The single lid 7 is a main surface wall 9 that covers the entire main surface opening 5a.
And the left and right side surface openings 5b, which are continuously provided at both ends of the main surface wall 9.
5b, a turning base that connects the side walls 10 and 10, the inner peripheral wall 11 provided on the inner surface side of the main surface wall 9, the front end parts of the left and right side wall parts 10 and the left and right front end parts of the inner peripheral wall 11. End wall 12
And a pivoting tip wall 12 ', and a lightening space 13 is formed between the left and right side walls 10 and 10 and the main surface wall 9, respectively. In this case, one side wall 10
The pivot 17 is provided at the corner where the rotation base end wall 12 and the pivot base end wall 12 intersect with each other, or the recording prevention member 20 is provided inside the lightening space 13 on both the left and right sides of the lid 7, or on one of them. It will be installed inside the lightening space portion 13. The opening 5 is formed on the rear side surface 8 of the body case 1.
Alternatively, it may be provided on either one of the left and right side walls 6.

[0020]

According to the present invention, the lid 7 for opening and closing the opening 5 for loading and unloading the disc is provided with a lightening space portion 13 to make the whole lid 7 lighter in weight and open and close more easily. By using the portion 13 as an installation space for the recording prevention member 20, the recording prevention member 20 can be easily and compactly attached to the lid 7. Since the detection hole 21 is provided in the upper wall 23 or the lower wall 24 of the main body case 1, the positional accuracy can be improved as compared with the detection hole provided in the above-described conventional lid together with the recording prevention member. Further, since it is not necessary to provide the fitting recessed portion required for the conventional disk cartridge in which both the recording prevention member and the detection hole are provided in the lid as described above, it is not necessary to provide the fitting recessed portion in the main body case 1, and accordingly, the periphery of the opening 5 of the main body case 1 is increased. It is advantageous that the strength of can be secured.

[Brief description of drawings]

FIG. 1 is an internal plan view of a main part.

FIG. 2 is a partially cutaway plan view of the whole.

FIG. 3 is a longitudinal sectional view of a main part.

FIG. 4 is an exploded perspective view of a main part.

FIG. 5 is a partially cutaway plan view of the whole of another embodiment.

[Explanation of symbols]

 1 Main Body Case 2 Disc 5 Opening 5a Main Surface Opening 5b Side Opening 7 Lid 7A First Lid 7B Second Lid 9 Main Surface Wall 10 Side Wall 11 Inner Circumferential Wall 12 Rotation Base End Wall 13 Thinned Space 20 Recording Prevention Member 21 Detection hole 22 Operation port 23 Upper wall 24 Lower wall 26 Valve body 30 Operation part 32 Pivot axis of recording prevention member 33/35 Concavo-convex part (positioning means)

Claims (2)

[Claims] 1. A main body case 1 in which a disc 2 of a recording medium is rotatably accommodated is provided with an opening 5 for inserting and removing the disc, and the opening 5 extends over the entire length of one side surface 8 of the main body case 1. The main body opening 5a is formed, and side surface openings 5b and 5b are formed at the ends of the other side walls 6 and 6 of the main body case 1 adjacent to both ends of the one side surface 8 toward the one side surface 8 respectively. 1 is a disk cartridge in which a lid 7 for opening and closing the opening 5 is horizontally rotatable around a pivot 17 on a plane parallel to the plane of the body case 1, and the lid 7 is closed on the body case 1. The upper wall 23 or the lower wall 24 facing the upper and lower surfaces of the lid 7 in the state is provided with the recording / non-recording detection hole 21, and the lid 7 covers the main surface opening 5a by closing the main surface opening 5a therein. 9 and one end of the main surface wall 9 There is a side wall 10 that is formed to extend in a corner and closes the side opening 5b by entering it, and an inner peripheral wall 11 that is formed in an arc shape along the circumference of the disc 2 on the inner surface side of the main surface wall 9. The extension side end of the side wall 10 and one end of the inner peripheral wall 11 are integrally connected to each other, and the lightening space 13 is vertically penetrated between the main surface wall 9 and the inner peripheral wall 11. The recording prevention member 20 is attached to the lid 7 so as to be horizontally rotatable around the pivot 32 between the position where the detection hole 21 is closed and the position where the detection hole 21 is opened in the lightening space 13, and the recording prevention member 20 is operated. The operation unit 30 has a unit 30.
The disk cartridge is characterized in that it faces the operation port 22 provided on the main body case 1. 2. A means 33, 35 for positioning the recording prevention member 20 at a position where the detection hole 21 is closed and at a position where the detection hole 21 is opened is provided between the recording prevention member 20 and the lid 7.
The disc cartridge as described.