JPH01173379A - disc cartridge - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a disk cartridge used as an external storage medium in office automation equipment such as a magneto-optical disk system and an optical disk system.

Prior Art A conventional disk cartridge has a single structure as shown in FIG.

That is, in FIG. 3, reference numeral 11 denotes a thin rectangular case divided into upper and lower halves, in which a disk-shaped disk (information recording medium) 12 is rotatably housed. An opening 13 is formed on the surface of the case 11 for exposing the clamp portion 12a of the disc 12 and for recording and reproducing. 3 is attached with a sliding shutter 14 that can be opened and closed freely.

The shutter 14 has a U-shape when viewed from the side, and has concave portions 15 formed on the surface of the case 11.
The opening 13 is slidably fitted from one end, and is automatically returned to the position where the opening 13 is closed by a coil spring. And even more cases! In order to prevent the shutter 14 from floating up, shutter holders 16 were fixed to the corresponding inner peripheral edges of the concave portions 15 on both surfaces with an adhesive.

While invention tries to solve! Vertex According to the above conventional 43 formation, shutter presser foot 1 = 6 -
It is necessary to attach it to both sides of the base, the number of parts increases, and adhesive is used, which increases the cost and has the problem of low reliability of the adhesive part.

Therefore, an object of the present invention is to provide a disk cartridge that can solve the above problems.

Means for Solving the Problems In order to solve the above problems, the disc cartridge of the present invention has concave portions formed on both surfaces of the case in which the information recording medium is rotatably housed, and the information recording medium is formed on the surface of the case. A sliding shutter, which has a U-shape in side view and which forms an opening for exposing the clamping portion of the recording medium and for recording and reproducing, and is capable of freely opening and closing the opening, is fitted into both concave portions, and both ends of the fitted shutter are fitted. are inserted and guided into grooves formed on the case side at positions corresponding to predetermined peripheral edges of each concave portion.

Effect: According to the above-mentioned four configurations, the tip of the sliding shutter is guided within the groove of the case, thus eliminating the need for a conventional shutter holder.

EXAMPLE An example of the present invention will be described below with reference to FIGS. 1 and 2.

In Figures 1 and 2, l is a disc-shaped disk (
This is a case that rotatably stores an information recording medium) 2, and is rectangular in plan view and is divided into two earthworks and one bond. Concave portions 3 are formed on both surfaces of the case 1, and an opening 4 for exposing the clamp portion 2a of the disk 2 and an opening 5 for recording and reproduction are formed in the center of the concave portion 3. There is.

A sliding shutter 6, which has a U-shape when viewed from the side, is fitted into the recessed portions 3 on both sides from one end, and slides in a direction perpendicular to the fitting direction (indicated by the arrow direction, hereinafter referred to as the width direction). Further, in a portion corresponding to the inner peripheral edge of the concave portion 3 of the case 1, there is a groove portion 7 into which each tip portion 6a of the shutter 6 is inserted and guided.
is formed along the width direction. Although not shown, a coil spring is provided between the case 1 and the shutter 6 so that the shutter 6 automatically returns to the position where the openings 4 and 5 are closed.

According to this configuration, when the shutter 6 slides on the concave portion 3, its tip portion 6a is guided inside the groove portion 7 formed in the case l. This eliminates the need for a conventional shutter holder.

Effects of the Invention According to the R4 configuration of the present invention, the tip of the sliding shutter is inserted and guided into the groove formed in the case, making it possible to eliminate the need for a conventional shutter holder, and thus reducing the number of parts. Since no adhesive is used, reliability can be improved.

[Brief explanation of the drawing]

FIG. 1 is a schematic perspective view of a disk cartridge in an embodiment of the present invention, FIG. 2 is a sectional view taken along arrow 1-1 in FIG.
FIG. 3 is a schematic perspective view of a conventional disk cartridge. 1...Case, la...Surface, 2...Disk,
2a... Clamp part, 3... Concave part, 4, 5...
Opening, 6-...Sliding shutter, 7...Groove.

Claims (1)

[Claims] 1. Concave portions are formed on both surfaces of a case in which the information recording medium is rotatably housed, and openings for exposing the clamp portion of the information recording medium and for recording and reproducing are formed on the surface of the case, and A sliding shutter that can be opened and closed and has a U-shape when viewed from the side is fitted into both recessed parts, and both ends of the fitted shutter are formed on the case side at positions corresponding to predetermined peripheral edges of each recessed part. A disk cartridge that is guided through the groove.