JP2002367319A - Disk cartridge - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the appearance of a disk cartridge even when difference in level is caused at the joined surface of a label sticking section due to variation in size when molding the case or variation in position when assembling the case by relieving and absorbing the bend of the label stuck on the label sticking section. SOLUTION: The sticking section 6 for a label L is recessedly formed on the peripheral outer side face of a disk case including a joined surface T of upper and lower cases 2a, 2b. A relief section 7 is provided on each outer corner section of the joined surface T. In the state that the label L is stuck on the sticking section 6, since the label paper inclines connecting the upper edge and lower edge of the upper and lower recessed section 7 in the shortest distance, the bending angle of the label 7 can be relieved.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk cartridge in which a label sticking portion is formed on the outer surface of a side of a disk case. An information recording medium (hereinafter, simply referred to as a disk) such as an optical disk or a magneto-optical disk is accommodated in the disk case.

[0002]

2. Description of the Related Art For example, in an MD, a label sticking portion is formed in the outer surface of a side edge on the rear end side of a disk case after loading, and a title label is stuck there (Japanese Patent Laid-Open Publication No. HEI 2 (1994) -209873).
000-28175). Most of the disk cases in this type of disk cartridge are configured by joining an upper case and a lower case in a lid-like manner. Therefore, the joining surface of the upper and lower cases divides the pasting portion into upper and lower parts.

[0003]

As described above, in a disk case in which the upper and lower cases are joined in a lid-like manner, variations in the finished dimensions of the upper and lower cases and variations in the assembling positions when assembling the two cases are caused. As shown in FIG. 3, the outer case of the upper case 11 and the lower case 12 after assembly may be slightly shifted. Even if this kind of misalignment occurs, there is no practical problem in using the disk cartridge. For example, it does not hinder the loading and unloading of the disk cartridge into and from the disk drive, and the unlocking of the shutter and the sliding opening and closing can be performed smoothly. However, as shown in FIG. 3, in a state where a step 15 is formed on the joining surface 14 of the attaching section 13, when the title label 16 is attached thereto, the title label 16 is bent along the preceding step 15, Alternatively, an outwardly convex wrinkle is generated, and the step written on the title label 16 is distorted.
5 is emphasized, so that the appearance is impaired. There is also a disadvantage that the quality of the disc cartridge is suspected. If the molding accuracy of the upper and lower cases 11 and 12 is improved, or the assembling accuracy of the two cases is improved by using a higher-precision jig, the preceding step 15 can be reduced to a negligible level, but this increases the manufacturing cost. Would.

An object of the present invention is to provide a disk cartridge in a state where a label is stuck in a state where a label is stuck, even if a step is formed on a bonding surface of the stuck part. An object of the present invention is to provide a disk cartridge which has an improved appearance and does not raise doubts about the reliability of quality. The object of the present invention is to reduce the bending of the label attached to the sticking portion, and to reduce the bending of the label, despite the fact that the upper and lower cases are formed with the same molding accuracy as before and are assembled with the same assembling accuracy as before. It is an object of the present invention to manufacture a relaxed disk cartridge at a low cost as in the related art.

[0005]

A disk cartridge according to the present invention includes a disk 1 on which a signal can be written and a rectangular disk case 2 for accommodating the disk 1. The disk case 2 is configured by joining an upper case 2a and a lower case 2b in a lid-to-lid manner. On the outer side surface of the side of the disk case 2, a sticking portion 6 for a label L is formed so as to be recessed including a joint surface T between the upper case 2a and the lower case 2b. In at least one of the outer corners of the joining surface T in the region where the affixing portion 6 is formed, a relief portion 7 for relaxing and absorbing the bending of the label L is formed in a recess.

The relief portions 7 are provided over the entire length in the longitudinal direction of the region where the sticking portion 6 is formed, and can be formed at each of the upper and lower outer corners facing each other with the bonding surface T therebetween.

[0007]

According to the present invention, a relief portion is formed in at least one of the outer corners of the joining surface of the sticking portion, so that if there is a step on the joining surface of the sticking portion, the sticking portion is stuck there. The bend angle of the label is made gentle by the entire escape width of the escape portion, so that the bend of the label can be reduced and absorbed. Therefore, the appearance of the disk cartridge in the state where the label is stuck is improved, and a disk cartridge that does not raise doubts about the reliability of the quality can be obtained. Furthermore, despite the fact that the upper and lower cases are molded with the same molding accuracy as before, and that they are assembled with the same assembling accuracy as before, the appearance of the disk cartridge is improved. It can be manufactured by

[0008] When the relief portion is provided over the entire length of the sticking portion in the longitudinal direction, even if the sticking position of the label is shifted in the left-right direction, the bending of the label can be reliably alleviated. In addition, forming a relief portion at each of the upper and lower outer corners with the joining surface in between makes it easier to label the upper and lower cases with a label than the case where a relief portion of the same width is formed at one outer corner. And the label can be firmly bonded to the sticking portions of the upper and lower cases.

[0009]

1 and 2 show an embodiment of a disk cartridge according to the present invention. In FIG. 1, the disk cartridge comprises a disk 1 having signal recording surfaces on both upper and lower surfaces, and a square disk case 2 for accommodating the disk 1. The disc case 2 is composed of an upper case 2a and a lower case 2b, each of which is made of plastic.
After the two cases 2a and 2b are joined together in a lid-like manner, a welding boss provided inside the case is welded and integrated. In FIG. 2, reference numeral 3 denotes a shutter for slidingly opening and closing the signal reading window 4, and reference numeral 5 denotes a switching piece. The switching piece 5 can be slid in the left-right direction over a position where writing of signals is permitted and a position where writing of signals is prohibited. Although not shown, a lock claw is provided inside the disk case 2 to engage and hold the shutter 3 when it is not used so that it cannot be opened.

A sticking portion 6 for sticking the label L is formed in a recess on the outer surface of the side of the disk case 2 on the rear end side after the loading. The sticking portion 6 is formed to be horizontally long in the left and right direction adjacent to the switching piece 5, and the upper and lower cases 2a and 2b are joined at the upper and lower central portions. That is, the sticking portion 6 is formed to be concave so as to include the joint surface between the upper and lower cases 2a and 2b.

In such a disk cartridge,
Due to a slight displacement between the upper case 2a and the lower case 2b at the time of assembly, the two cases 2a
There may be a step on the joint surface T of 2b. In such a case, in order to prevent the label L attached to the attaching portion 6 from being sharply bent by the preceding step difference, the label L is attached to each of the upper and lower outer corners facing the joining surface T in between. Relief portions 7 for relaxing and absorbing bending are respectively formed in recesses. As described above, when the escape portions 7 are provided above and below the joining surface T, the upper edge of the upper escape portion 7 and the lower edge of the lower escape portion 7 can be provided in a state where the label L is attached to the attaching portion 6. Gently incline the label paper with the edge and the line tied straight,
The label L can be prevented from being sharply bent. Note that the inclination angle of the label paper surface is determined by the total clearance width W described later and the bonding surface T.
Is equal to the inclination angle of the hypotenuse of the right triangle specified by the step size.

By the way, as the vertical dimension of each relief portion 7 is larger, the inclination of the label L at the step portion can be made gentler and the bend of the label paper surface can be made less noticeable. On the other hand, since the area of the label L floating in the air facing the internal space of the escape portion 7 increases, the label paper facing the internal space of the escape portion may be erroneously pierced by a tip of a nail or the like when attaching the label L. There is. In order to solve such a problem, it is preferable that the total escape width W of the upper and lower escape portions 7, 7 is a dimension that does not allow the toe to enter. For example, when the thickness dimension of the label L is 0.1 mm, the total relief width W
Can be around 0.2 mm.

When attaching the label L to the attaching section 6,
The label paper is pressed against the sticking part 6 to press the adhesive layer on the back side, but if the label paper is not carefully attached from one end to the other end, air is sealed between the label paper and the sticking part 6. Sometimes. However, if the escape portion 7 is provided on the sticking portion 6 as described above, the air sandwiched between the label paper surface and the sticking portion 6 can escape through the escape portion 7, so that the label L can be easily and simply placed. It can be properly pasted.

In addition to the above embodiment, the present invention can be applied to disk cartridges other than MD. The relief portion 7 can be provided only at one of the upper and lower outer corners facing the joint surface T, and in this case, the vertical dimension of the relief portion 7 is made to match the entire relief width W. An outer corner facing the joint surface T can be cut out in a chamfered shape to form the escape portion 7. A plurality of air escape grooves can be formed in the attaching section 6, and these grooves can be communicated with the escape section 7. The label L may be a label other than the title label.

[Brief description of the drawings]

FIG. 1 is a sectional view taken along line AA in FIG.

FIG. 2 is an overall perspective view.

FIG. 3 is a sectional view of a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Disk 2 Disk case 2a Disk case upper case 2b Disk case lower case 6 Adhesion part 7 Escape part L Label T Joining surface

Claims (2)

[Claims] 1. A disk, to which a signal can be written, and a rectangular disk case for accommodating the disk, wherein the disk case is formed by joining an upper case and a lower case in a lid-to-lid manner. A sticking portion for a label is formed on the outer side surface of the side of the disk case, including a joint surface between the upper case and the lower case, and the joining surface in a region where the sticking portion is formed. A disc cartridge having a recess formed in at least one of the outer corners of the label to relax and absorb bending of the label. 2. The relief according to claim 1, wherein the clearance provided over the entire length in the longitudinal direction of the region where the attachment portion is formed is formed at each of upper and lower outer corners opposed to each other with the bonding surface therebetween. Disk cartridge.