JP3341724B2 - Disc case - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk case capable of storing a disk-shaped recording medium such as an optical disk.

[0002]

2. Description of the Related Art A compact disk (hereinafter, referred to as CD) system, which is standardized as a red book, a yellow book and the like and records information on a disk having a diameter of 120 mm, is widely used mainly for music. Although this system has a tentative capacity for handling music information, when recording video information such as a CD-ROM, the amount of information increases, resulting in a shortage of capacity. The decline was inevitable. As a movement to cope with this, for example, a digital video disk (hereinafter, referred to as a DVD) system that is being standardized is cited.

[0003]

The problem to be solved by the present invention [0006] a capacity of CD system or which substantially disk system are the same size, the concept of the new disk case for this, and challenge is less It is.

[0004] 1) In order to prevent scratches, dust and dirt due to high-density recording, a state in which a disk is placed in a disk case is standard. Even a CD system is about 135mm long,
There is a case of a CD caddy having a width of about 125 mm and a thickness of about 8 mm, but at present, a so-called tray loading method in which the CD caddy is not used is mainly used. 2) Double-sided recording: CD is single-sided. Double the capacity even with simple calculations. 3) Enablement of compatible reproduction of CDs: A point that a disk device using a new disk case can also perform compatible reproduction of a current CD is a selling point. Therefore, it is an essential condition that a disc can be inserted and removed and a disc for a CD system can be built in. However, the above-mentioned CD caddy is a single-sided recording, and a disk clamper is attached to the case side of the caddy, whereas a new disk cartridge is a double-sided recording system, so that the clamper is provided on the disk device side. Become. Therefore, when the CD caddy is mounted on the disk device of the new disk cartridge, 2
Two clampers interfere with each other. Therefore, it is necessary to prevent the CD caddy from being mounted on the disk device of the new disk cartridge. 4) Realization at low price: In order to respond to the price for general household use, a low cost configuration including its disk device is adopted. An object of the present invention is to solve the above-mentioned problems and to provide a disk case suitable for a large-capacity CD.

[0005]

To solve the above-mentioned problems, the present invention has the following arrangement. That is,

That is, information is written to both disk surfaces.
A second disc capable of storing a second disc capable of recording or reproduction
Disc case and one of the disc cases
A first disk capable of recording or reproducing information on the disk surface
A first disk case capable of storing a disk,
The second disk case has a square shape, and the second disk case has the second shape.
When the disc is stored, a part of the second disc
Case having a second window for exposing the outside to the outside
And slidably mounted on the second case,
A second shutter for opening and closing the second window.
When the second disk is stored on the outer surface of the case
At a position perpendicular to the disk surface,
On the second orthogonal plane along which the shutter slides,
Both ends of the second shutter in the sliding direction
Is provided with a second reduction unit, and the second reduction unit
Provided so as to be point-symmetric with respect to each other on the second orthogonal plane.
Having the same shape as the second case.
Then, when the first disk is stored, the first
Having a first window exposing a portion of the disc to the outside
A first case, and slidably mounted on the first case.
And a first shutter for opening and closing the first window.
An outer surface of the first case;
When the disc is stored, the
Thus, the first shutter slides along the first
On the orthogonal plane of the sliding direction of the first shutter.
Only one of the two ends has a reduced letter first reduction section
Wherein the first reduction unit is provided by any of the second reduction units.
Only one of them is formed on the first orthogonal plane
This is the first disk case having the following.

[0007]

[0008]

According to the above construction, both sides of the disk can be handled, and the shutter opening / closing mechanism can be handled as a single set even when the disk case is turned upside down and inserted in order to support both sides. Further, the disk in the disk case can be replaced.

[0009]

FIG. 1 to FIG. 6 show an embodiment of the present invention.
This will be described with reference to FIG.

FIG. 1 shows a disk case according to the present invention.
(A) is a plan view partially broken away, (b), (c),
(D) is a side sectional view from below, right side, and above.

As a basic configuration of the disk case 100 of the present invention, a disk 1 for recording information, cases 2 and 3 for storing the disks, a shutter 4 for opening and closing windows 2a and 3a of the case, and a shutter 4 are provided. It comprises two biasing springs 40 and 41 and a door 5 opening a part of the case.

The disk 1 is capable of recording and reproducing signals on both sides thereof, and has a diameter of about 120 mm and a thickness of about 1.2 m.
m.

The cases 2 and 3 are formed by being divided into two pieces and bonded together, and have a length of about 135 mm and a width of about 12 mm.
5 mm, about 8 mm thick. Windows 2a and 3a respectively exposing a part of the disk surface so that information can be recorded and reproduced.
Is formed. Between the disk 1 and the springs 40 and 41, partition walls 2p and 3p for dust prevention are formed.

The shutter 4 is integrally formed in a U-shape with shutter surfaces 4a and 4b corresponding to both surfaces of the disk and a side surface portion 4c for integrally connecting the two. The projections 4p and 4q are engaged with a guide groove 2g formed linearly in the case, and are mounted so as to be linearly slidable in the left-right direction in the figure.

The two springs 40 and 41 are torsion coil springs, which are in a stretched state and urge so that the shutter surfaces 4a and 4b of the shutter 4 are held at positions for closing the windows 2a and 3a, respectively. ing. Also, the two springs have the same shape, so as not to increase the number of parts,
We are trying to reduce costs. And two cases 2, 3
And one in each of the two corner areas 50 and 51 sandwiching the shutter 4 from side to side. The tip of each spring arm is bent at a right angle to the axial direction of the winding of the coil portion, and each end 40a,
41a is engaged with the grooves 2d and 3d of the case corner. Further, the other ends 40b and 41b are engaged with stoppers 3p and 3q formed on the case 3 and having a V-shaped cross section (see also FIG. 2A), and the springs are stretched as described above. , It is positioned with high accuracy in the vertical and horizontal directions in the figure. According to the present invention, the torsion coil spring has a configuration in which both ends are directly engaged with the case without any intervening other components, and does not increase the number of components. The hooks 4d and 4e are formed integrally with the shutter 4 so as to coincide with the above-mentioned vertical and horizontal positions and to shift the height in the thickness direction of the disk.
Are located at the deepest portions of the grooves. This allows
The shutter 4 is held at the left and right in the drawing, that is, at the center position in the drawing in the sliding direction.

The sides of the cases 2 and 3 viewed from the direction shown in FIG. 1B are open, so that the two springs can be inserted and assembled from one direction at a time with the two springs bent. Very easy to assemble.

The door 5 is rotatably engaged with the case 2 at 5a and 5b, and is opened so that a disk can be taken in and out as shown by dotted lines 5c and 1a. Here, since the door 5 has a surface that is parallel to the disk surface and is opened, the visibility of the disk when the door 5 is opened and the accessibility of the disk are good.

The door 5 is a commercially available 8 cm CD-RO.
A configuration in which the side surface of the case is opened like a cartridge for M may be used.

If the user does not want to take out a disc such as a rental disc, the door 5 need not be provided.

Next, the operation when the shutter opens and closes the window is shown in FIGS.

In FIG. 2, when the disk case 100 is inserted into the apparatus 200 (downward in the figure), the disk case 100 is supported by a shaft 202 fixed to the apparatus side and urged clockwise by a spring 203 in the figure. Then, the front end 201 a of the shutter opening lever 201, which is in a standby state in contact with the stopper 204, contacts the end 4 r of the side surface of the shutter 4. When the shutter opening lever 201 is further inserted farther from this state, the shutter opening lever 201 rotates counterclockwise in the drawing, and slides the shutter 4 to the left in the drawing. When the sliding is started, as shown in FIG. 3, the right end 40b of the left spring 40 is pressed into and engaged with the groove of the left hook 4d of the shutter and detaches from the projection 3p of the case. On the other hand, the left end 41b of the right spring 41 in the drawing
Is released from the right hook 4e of the shutter while being pressed and engaged with the projection 3q of the case, and the right spring 41
Is retained in its original form. Then, as the shutter 4 slides, the right end 40b of the left spring 40 moves linearly and deforms in the corner area 50 as shown in FIG. Here, a CD is provided on the side surface portion 4c of the shutter 4.
Discrimination holes 4s is provided with caddy disk Ke
At the position where the base 100 is inserted to the innermost position, a projection 210 is provided on the device 200 side corresponding to the determination hole 4s, and only when the projection 210 is fitted into the determination hole 4s. The configuration is such that the insertion of the disk case 100 can be completed. Then, a sensor (not shown) detects that the disk has been inserted to the completion position, and thereafter, the entire disk case 100 is moved in the direction of the rotation axis of the disk, and the disk is completely mounted in a recordable / reproducible manner.

Here, the CD caddy has the discrimination hole 4s.
There is no side portion 4 of the shutter 4 just before the insertion is completed.
c collides with the tip of the protrusion 210, and the insertion cannot be completed. As a result, the mounting of the CD caddy is prevented.

In the present invention, the disk case 100
Are symmetrical in the state of FIG. 4 and 6 are side views showing the outer shapes of the cases 2 and 3 and the shutter 4. In FIG. 4, the discriminating hole 4s is formed at the center of the side portion 4c of the shutter 4 so as to be point-symmetrical as shown in FIG. Therefore,
When the disk case 100 is inserted upside down, it is configured to be able to operate in exactly the same manner as in FIGS. 2 and 3 when recording and reproducing on the back surface, and the mechanism shown in FIGS. Only one set can support both sides of the disc,
The simplification of the device configuration and the cost reduction have been realized. Also,
In the present embodiment, the discriminating hole 4s has a rectangular shape, but may have a circular shape as shown in FIG. 4B. If the side surface portion 4c of the shutter 4 is point symmetric as described above, a plurality of holes may be provided as shown in FIG. Also, as shown in FIG. 5, reducing portions 20a and 20b are provided on the front surface orthogonal to the insertion direction of the cases 2 and 3 so as to be point-symmetrical with respect to the front surface orthogonal surface, and the protrusions are correspondingly provided. 210a may be fitted. Further, the reduction unit 20 only needs to be point-symmetrical, and may have an arrangement configuration as shown in FIGS.

When the disc is a single-sided recording, only one of the reduction sections 20a and 20b corresponding to the recording side is formed, so that discrimination between double-sided recording and recording can be made. Can be specified.

Further, the combination of the reduced portion and the protruding portion using the above-mentioned shape means may include, for example, the following as long as the arrangement relationship is configured to be point-symmetrical on the front surface orthogonal to the front edge side. All of the detection means can be replaced. 1) Combination of light emitting diode and light receiving element using optical means. 2) Combination of MR sensor and magnet using magnetic means. 3) Combination of ultrasonic transmitter using acoustic means and its receiver. 4) Combination of a contact switch and a conductor using electric means.

It should be noted that the disk case 100 is
1 to 3, the right end 40 b of the left spring 40 returns to the state pressed by the projection 3 p of the case 3.

Further, in this embodiment, the structure using the torsion coil spring as the urging means of the shutter means is different from the current commercially available CD caddy in the case where the disc is not disposed in the case and in the case. A configuration in which one tension coil spring is arranged in an area occupied by the shutter means at the position where the window is closed may be employed.

[0028]

According to the present invention, it is possible to provide a disk case for a disk with a large capacity at a low cost.

[Brief description of the drawings]

FIG. 1 is a plan view and a side view showing a disk case of the present invention.

FIG. 2 is a plan view showing a state where the disk case of the present invention has been inserted into the apparatus.

FIG. 3 is a plan view showing a state where the disk case of the present invention has been completely inserted into the apparatus.

FIG. 4 is a plan view showing a configuration of a discriminating hole provided in a shutter of the disk case of the present invention.

FIG. 5 is a plan view showing a reduction portion provided in the case of the disk case of the present invention.

FIG. 6 is a plan view showing an alternative to the reduction unit provided in the case of the disk case of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Disc 2, 3 Case 4 Shutter 5 Door 40, 41 Spring 100 Disc case 200 Device

──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Toshifumi Takeuchi 292 Yoshida-cho, Totsuka-ku, Yokohama-shi, Kanagawa Prefecture Inside the Media Research Laboratory of Hitachi, Ltd. (72) Masafumi Nakamura 292 Yoshida-cho, Totsuka-ku, Yokohama-shi, Kanagawa (72) Inventor Masayuki Inoue 292 Yoshida-cho, Totsuka-ku, Yokohama-shi, Kanagawa Prefecture Incorporated Hitachi Video Media Research Laboratories (72) Yoshio Suzuki, Yoshida-cho, Totsuka-ku, Yokohama, Kanagawa No. 292, Hitachi, Ltd. Image Media Research Laboratory (72) Inventor Michio Miura 292, Yoshida-cho, Totsuka-ku, Yokohama-shi, Kanagawa Prefecture, Ltd. Hitachi, Ltd. Image Media Research Laboratory (56) References JP-A-7-29347 (JP) , a) JP flat 5-242626 (JP, a) (58 ) investigated the field (Int.Cl. ^7, B name) G11B 23/03 606 G11B 23/03 605

Claims (2)

(57) [Claims] 1. A disk case capable of storing a second disk capable of recording or reproducing information on both disk surfaces, and recording or reproducing information on one disk surface. A first disk case capable of accommodating the first disk, wherein the second disk case has a square shape, and when the second disk is accommodated, one of the second disks A second case having a second window exposing the portion to the outside, and a second shutter slidably mounted on the second case and opening and closing the second window, The outer surface of the second case has a positional relationship orthogonal to the disk surface when the second disk is stored, and
On the second orthogonal plane along which the shutter slides,
A second reduction portion is provided at both ends of the second shutter in the sliding direction, and the second reduction portions are provided so as to be point-symmetric with each other on the second orthogonal plane. A first window having substantially the same shape as the second case and exposing a part of the first disk to the outside when the first disk is stored. A first case, slidably mounted on the first case, and a first shutter for opening and closing the first window, wherein the first disk is disposed on an outer surface of the first case. When the first shutter is slid, the first shutter slides along the first orthogonal surface in a positional relationship perpendicular to the disk surface, and the first shutter slides along two ends of the first shutter in the sliding direction. A first reduction portion having a reduction letter is provided only on one side, and the first reduction portion is provided. The first disk case, wherein the reduced portion has a relationship in which only one of the second reduced portions is formed on the first orthogonal plane. 2. The first disk case according to claim 1, wherein the first disk has a diameter of about 120 mm and a thickness of about 1.
2 mm, the first case is about 135 mm long and about 125 m wide
A first disc case having a thickness of about 8 mm.