JPS6069872A - Disc case - Google Patents

Abstract

PURPOSE:To attain a disc case which prevents a damage due to oscillation and can make a device body small-sized, by providing an elastic member in a position of a disc, which faces a driving aperture part, so that the disc is de-energized to the side of the disc driving aperture part. CONSTITUTION:While the disc case is carried, a disc 1 is pressed to a lower shell 5 of the disc case by a flat spring 2, and the disc 1 is prevented from being moved freely in the case. The disc is placed on a disc motor as shown in figure. A disc motor 9 which rotates and drives the disc 1 is inserted from a driving aperture part 6 of the lower shell 5 of the disc case, and the disc 1 and the lower shell 5 of the disc case are not brought into contact with each other, and the disc 1 is rotatable in the disc case. The flat spring 2 is deformed more than carrying of the disc case to press the disc 1 to the disc motor 9. Since a spring receiver 3 is brought into contact approximately with the flat spring 2 by a point, the rotation load of the disc 1 is very low.

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a disk-shaped recording medium (hereinafter referred to as a disk).
The present invention relates to a disc case used in a device 4 for recording and reproducing information using a disc.

Conventional Structures and Their Problems In recent years, disk cases of various shapes have been devised and used to protect disks or to facilitate the handling of disks.

A conventional disk case will be explained below.

In conventional disk cases, the method for holding the disk when the disk is placed on the disk rotation drive means is to provide an opening for holding the disk in the side wall facing the disk drive opening, and to insert the disk from the outside through this opening. This was done by inserting a presser foot. In another method of holding the disk, the central part of the disk is made of metal, and a magnet is provided in the disk rotation drive means 11, and the holding is carried out by the attraction force of the magnet.

However, the above configuration requires a mechanism for inserting the disc holder from outside the disc case, and
The configuration for inserting the disc holder requires a connecting member from the periphery of the disc case at the center of disc rotation, which leads to the re-integration of the configuration of information recording and reproducing devices using discs, and at the same time makes the device more compact. It was accompanied by the negative effects of Furthermore, when the disk 7 is transported, the disk vibrates inside the disk case, causing damage to the disk. In addition, in the method that uses the attractive force of a magnet, the center of the disk must be made of metal that the magnet attracts, which complicates disk manufacturing. This caused vibration and caused damage to the disk.

Purpose of the Invention The present invention solves the above problems, prevents damage caused by vibration,
The object of the present invention is to provide a disk case that can reduce the size of this device.

Structure of the Invention The present invention provides an elastic member at a position facing the drive opening of the disk case so as to bias the disk toward the disk drive opening of the disk case. can be held from the outside of the disc case without inserting a tension holder, and
When the disk case is transported, the disk is pressed against the side wall of the drive opening inside the disk case, thereby preventing vibration of the disk and preventing damage to the disk. In addition, since the center part of the elastic member is elastically supported by the spiral arms extending beyond the periphery, slippage 9 does not occur at the contact area between the disk and the elastic member. 4J can be easily fixed by adhesive or the like. Still, the rotational load on the disk can be minimized by providing a protrusion on either the disk case or the elastic member at the approximate center of rotation of the disk at the contact portion between the disk case and the elastic member. Furthermore, since the contact part of the (iQ wall) of the disc case with the elastic member is made of a part with good wear resistance, the contact part of the side wall of the disc case with the elastic member is worn out, and the It is possible to prevent dropouts that occur due to powder scattering and adhering to the disk.

DESCRIPTION OF EMBODIMENTS FIG. 1 shows an exploded view of a disk case in a first embodiment of the present invention. In Figure 1, 1
is a disk, 2 is a leaf spring, and the center part a and the peripheral part are integrally formed by a spiral arm part C. Dimension/ζ
In the free state, the leaf spring 2 has a step in the thickness direction between the central portion a and the peripheral portion A, and a pressing force against the disk 1 is obtained by deforming in a direction that reduces this step. The leaf spring 2 is adhesively fixed to the disk 1 coaxially with the center of the rotation axis of the disk 1 at the peripheral portion thereof. Reference numeral 3 denotes a spring receiver, which is made of a synthetic resin material (for example, polyacetal) with good wear resistance.

The spring receiver 3 is in contact with the center part a of the leaf spring 2, and the contact part has a spherical shape.

Further, the spring receiver 3 is welded to the upper side/L 4 of the disk case at a position coaxial with the rotation center of the disk 1.

Reference numeral 5 designates the lower side of the disk case, including an opening for the head for recording or reproducing information on the disk 1, an opening 6 for driving the rotation of the disk 10, and a positioning hole for positioning the disk case. 8 is provided. The upper part 4 and the lower part 6 are injection molded products made of ABS resin including, for example, anti-static coating, and both are fixed with adhesive.

The operation of the disk case of this embodiment constructed as described above will be described below. As shown in Figure 2,
While the disk case is being transported, the disk 1 is pressed against the lower shell 5 of the disk case by the leaf spring 2.
The disk 1 is prevented from moving freely within the case. 3 is a spring holder, 4 is an upper shell of the disk case, and 6 is a disk rotation driving space. FIG. 3 shows a state in which the disk is placed on the disk motor. disc 1
The rotational drive disc motor 9 is inserted through the drive opening 6 of the lower shell 5 of the disc case, and the contact between the disc 1 and the lower shell 5 of the disc case is eliminated, and the disc 1 rotates within the disc case. It becomes possible. The leaf spring 2 is deformed more strongly than when the disk case is transported, and presses the disk 1 against the disk motor 9. Spring receiver 3
is located coaxially with the rotational axis of the disk 1 and is in approximately point contact with the plate spring 2, so that the rotational load on the disk 1 is extremely small. 4 is the disc case's 2nd fl
It is a l11 shell.

Effects of the Invention The disk case of the present invention has an elastic member provided at a position facing the drive opening for the disk so as to bias the disk toward the disk drive gap, thereby making it possible to record information on the disk. There is no need for a special disc holder in the reproducing device, and the device can be miniaturized. This prevents damage to the disk caused by vibration inside the disk case during transportation of the disk case. Furthermore, the elastic member is elastically supported by spiral arms extending from the periphery at the center, making it easy to adhere to the disk. In addition, since the contact part of the elastic member with the disc case is supported by a highly wear-resistant protrusion at the position of the disc rotation axis, the rotational load on the disc can be reduced and the contact part can wear out. Because it does not generate powder, it is possible to prevent disk dropout, which has a great practical effect.

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view of a disk case in an embodiment of the present invention, FIG. 2 is a cross-sectional view showing the state of transportation of this disk case, and FIG. 3 is a view of this disk case attached to a disk drive device. FIG. 1... Disc, 2... Leaf spring, 3.
・・・・・・Spring holder, '−°pa° upper shell of disk case, 5...Lower shell of disk case,
6...Rotation drive opening. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 2 Figure 3

Claims (1)

[Scope of Claims] (1) A disc-shaped recording medium is rotatably housed in a housing, and the disc-shaped recording medium is externally attached to one of the side walls of the housing that protects the surface direction of the disc-shaped recording medium. It has a drive opening for rotationally driving the medium, and an elastic member is provided between the other side wall and the disk-shaped recording medium to bias the disk-shaped recording medium toward the drive opening. A disc case characterized by: (2. A disk characterized in that the bullet 14 is elastically supported by a spiral arm extending from the periphery at the center thereof. Case. (3) In claim 1, a protrusion is provided on either the elastic portion or the side wall of the disk case that contacts the elastic portion at approximately the center of rotation of the disk-shaped recording medium. and the elastic member and the side wall of the disk case are configured to contact each other at the protrusion. (4) The elastic member of the side wall of the disk case according to claim 1. A disc case characterized in that a contact part with a part having good wear resistance is constructed on the side of the part having good wear resistance.