JPH05242647A - Case for housing recording medium - Google Patents

Abstract

PURPOSE:To provide the case for housing a recording medium constituted to prohibit the insertion of a case when this case is inserted in a wrong posture into a device. CONSTITUTION:Both sides of a pair of corners on the front end side of the case 11 are formed to the shapes varying from each other on the one end side in the thickness direction of the case and the other end side and a step part 14 is formed on one surface side of the thickness direction. In addition, a surface 15 to be detected is formed on the terminal side of this step part 14. The step part 14, the terminal of which is the surface 15 to be detected is detected by a detecting lever 21 on the device side.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a storage case for recording media, and more particularly to a structure for preventing erroneous insertion thereof.

[0002]

2. Description of the Related Art For example, as disclosed in Japanese Utility Model Laid-Open No. 61-52376, an optical disk is housed in a flat case, and the case housing the disk is mounted in the apparatus as it is and a reproducing operation is performed. Is to be done. In this case, the shutter that covers the opening formed in the case is opened, and the read head is brought into contact with the optical disk through the opening to perform a predetermined reproducing operation.

[0003]

Therefore, according to such a device, the case must be inserted into a predetermined position of the device in a correct posture. Otherwise, the shutter may not be opened properly, or the read head may not be properly contacted with the optical disc.
Therefore, it has been attempted to provide an insertion prevention device.

For example, Japanese Utility Model Laid-Open No. 59-145742.
Japanese Utility Model Laid-Open No. Sho 59-180264 and Japanese Patent Laid-Open No. Sho 61-741.
In JP-A-70, etc., one of four corners of a case accommodating a recording medium is obliquely cut out, and this cutout is detected by a detection means on the side of the device to prevent erroneous insertion. I am trying to prevent it. However, particularly when the case is almost square, as in Japanese Patent Laid-Open No. 61-74170, the case can be inserted even when turned upside down with respect to the correct insertion direction and further rotated by 90 °. It may not be detected.

The present invention has been made in view of the above problems, and provides a storage case for a recording medium having a simple structure and surely preventing erroneous insertion of the case. The purpose is.

[0006]

According to the present invention, at least one corner of a pair of corners on the front end side in the insertion direction of a case in which a recording medium is housed in an apparatus is set to one of the corners in the thickness direction of the case. The end side and the other end side have different shapes from each other, and are arranged at positions where only one end side in the thickness direction of the corner of the case inside the device is abutted when inserted into the device. , Only when the detection lever urged to move toward the position of preventing the insertion of the case comes into contact with one end side of a corner having a different shape in the thickness direction. Moved from a position that prevents the insertion of the case to a position that allows the insertion of the case,
The present invention relates to a storage case for a recording medium, wherein the case can be attached to a predetermined position of the apparatus.

[0007]

When the case accommodating the recording medium is inserted into the apparatus in the correct posture, the case is arranged so that only one end side in the thickness direction of the corner of the case in the apparatus abuts. The detection lever that is in contact with one end side of the corner moves the detection lever from the position that prevents the case insertion to the position that allows the case insertion, and the case moves to a predetermined position inside the device. Is installed in the position.

On the other hand, if the detecting lever is inserted into the apparatus in an incorrect posture rather than in the correct posture as described above, the detecting lever does not come into contact with one end side of the corner and the detecting lever is The case is not moved from the position preventing insertion of the case to the position allowing insertion. Therefore, the detection lever prevents the case from being inserted.

[0009]

4 and 5 show a case 11 accommodating a circular optical disk 10 which constitutes a recording medium. The case 11 is made of synthetic resin into a flat box. An opening 12 is formed on the bottom surface of the case 11, and a shutter 13 is attached so as to cover the opening 12 so that the opening 12 can be opened and closed. Further, as shown in an enlarged view in FIG. 3, a step portion 14 is formed at a corner portion on the front end side in the insertion direction of the case 11, and the end of the step portion 14 has a large curvature at the detected surface. It is composed of 15.

On the other hand, the apparatus for mounting the case 11 accommodating the optical disk 10 is provided with a holding plate 18 as shown in FIG. 6, and a pair of left and right insertion guides 19 are provided on the holding plate 18. ing. A cutout 20 is formed in at least one of the guides 19, and a detection lever 21 is arranged facing the cutout 20. The detection lever 21 is rotatably supported by a pin 22 as shown in FIG.
Further, in FIG. 1, it is biased counterclockwise about the pin 22.

In the configuration as described above, the optical disc 1
When the case 11 accommodating 0 is inserted between the insertion guides 19 on the holding plate 18 in the correct posture, as shown in FIG.
The surface to be detected 15 forming the end of the step portion 14 on the front end side in the insertion direction of the case 11 comes into contact with the front end portion of the detection lever 21. Since the detected surface 15 pushes the tip of the lever 21, the lever 21 is rotated clockwise around the pin 22 and resists the spring 23.
Is rotated as indicated by the chain line. Therefore, in this case, the detection lever 21 does not interfere with the insertion of the case 11, and the case 11 is correctly inserted in the predetermined position. That is, since the angle of the surface to be detected 15 is set to rotate the detection lever 21 in the direction to escape the case 11, the surface to be detected 15 is used to detect correct insertion, and I am trying to allow the installation.

On the other hand, when the case 11 is inserted in an incorrect posture, for example, when the front and back are turned upside down,
As shown in FIG. 2, the stepped portion 14 and the detected surface 15 do not exist at the position where the detection lever 21 contacts. Therefore, in this case, the flat surface at the tip of the case 11 is directly detected by the detection lever 21. Then, the flat surface at the tip of the case 11 gives a force for rotating the detection lever 21 about the pin 22 in the counterclockwise direction. However, the detection lever 21 cannot be further rotated counterclockwise by the side wall 24 of the guide 19, and therefore the detection lever 21 plays a role of a stopper for preventing the case 11 from being inserted. Therefore, when the insertion is made in such an incorrect posture, the detection lever 21 prevents the insertion of the case 11. In this way, erroneous insertion of the case 11 is prevented.

According to such an erroneous insertion prevention device, the surface to be detected 15 is formed on the case 11 side and the case 1
It suffices to provide the detection lever 21 at the insertion position of 1. Therefore, it becomes possible to simply configure the erroneous insertion prevention device. Then, the detection lever 21 has a function of detecting erroneous insertion and a function of preventing advancement of the case 11 inserted in an incorrect posture. Therefore, it is possible to provide a low-cost erroneous insertion prevention device.

[0014]

As described above, according to the present invention, at least one corner of the pair of corners on the front end side in the insertion direction of the case in which the recording medium is inserted into the apparatus is provided at one end in the thickness direction of the case. Section side and the other end side have different shapes, and are arranged at positions where only one end side in the thickness direction of the corner of the case inside the apparatus comes into contact when inserted into the apparatus. The detection lever blocks the insertion of the case only when the detection lever urged to move toward the position that prevents the insertion of the case comes into contact with one end side of the corner having a different shape in the thickness direction. The case is moved from the position to a position where the case can be inserted, and the case can be mounted in a predetermined position of the device.

Therefore, only when the case is inserted into the apparatus in the correct posture, the detection lever can be moved from the position where the case is prevented to be inserted into the position where the case can be inserted. It will be mounted in place. On the other hand, if the case is inserted in the wrong posture, the detection lever does not move from the position that blocks the insertion of the case to the position that allows the case to be inserted, and the detection lever causes the error of the case. Insertion will be prevented.

Since one end side and the other end side in the thickness direction of the case detected by the detection lever have different shapes from each other, when the case is inserted upside down or turned upside down. When it is inserted as described above, the fact is detected by the detection lever. Therefore, when the case is formed into a substantially square shape, and when the case is turned upside down with respect to the correct insertion direction and further inserted by rotating 90 °, the detection lever comes into contact with the other end side, The other end side having a different shape from the one end side does not move the detection lever to a position where the case can be inserted, and in this case also, erroneous insertion is prevented.

[Brief description of drawings]

FIG. 1 is a plan view of relevant parts showing an erroneous insertion prevention device according to an embodiment.

FIG. 2 is a plan view of an essential part showing the operation when the card is erroneously inserted.

FIG. 3 is an enlarged perspective view showing a detected surface of a case.

FIG. 4 is a front view of a case.

FIG. 5 is a plan view of a case.

FIG. 6 is a plan view of an essential part showing the inserting operation of the case.

[Explanation of symbols]

 10 Optical Disc 11 Case 12 Opening 13 Shutter 14 Step 15 Detected Surface 18 Holding Plate 19 Insertion Guide 20 Notch 21 Detection Lever 22 Pin 23 Spring 24 Sidewall

Claims (1)

[Claims] 1. A corner of at least one of a pair of corners on the front end side in the insertion direction of a case in which a recording medium is accommodated in an apparatus is provided with one end side and the other end side in the thickness direction of the case. The side and the side have different shapes, and are arranged at positions where only one end side in the thickness direction of the corner of the case in the device is abutted when the device is inserted, and the case is prevented from being inserted. From the position where the detection lever blocks the insertion of the case only when the detection lever urged to move to the position side comes into contact with one end side of the corner having a different shape in the thickness direction. A case for storing a recording medium, wherein the case is moved to a position where the case can be inserted, and the case can be attached to a predetermined position of the apparatus.