JPS62298980A - Optical disk cartridge - Google Patents

Abstract

PURPOSE:To eliminate the rattling of an optical disk in a cartridge by sandwiching and pressuring an optical disk outer circumferential edge with a plate spring and a retainer inner circumferential surface. CONSTITUTION:The outer circumferential edge of an optical disk 1 is held by a retainer 2 and the retainer 2 to hold the optical disk is inserted from the inserting extracting port of a case 3. When a tip edge part 6 of the retainer 2 is close to a bottom part 8 of the case 3, first, a rear edge 5b of a rod 5 is abutted to an inner wall 3a of the bottom part 8 of the case 3. Further, when the part is closer, a rod 5 is stopped at the position, the retainer 2 is relatively displaced with the rod 5 and the retainer 2 is pushed into the case 3. At this time, a plate spring 4 whose free edge is pressured by a head part 5a of the rod 5 is gradually close to and abuts an outer circumferential edge 1a of the optical disk 1 and shifts the optical disk 1 in the inserting extracting port side inner circumferential surface direction of the retainer 2. When the tip edge part 6 of the retainer 2 and the bottom part 8 of the case 3 are contacted, the optical disk 1 is pressed by the plate spring 4 to the inner circumferential surface of the retainer 2 and held up to a constant position.

Description

Detailed Description of the Invention 3. Detailed Description of the Invention [Field of Industrial Application] The present invention is an optical disc cartridge structure, particularly a cartridge structure in which an improved method of fixing an optical disc within the cartridge is made.

[Prior Art] Conventionally, this type of cartridge consists of a retainer that holds the outer periphery of an optical disk, and a case that houses the retainer that holds the optical disk.

By the way, in this type of cartridge, in order to make it easier to take the optical disk in and out of the case, the inner diameter of the retainer that holds the optical disk is generally set to be slightly larger than the outer diameter of the optical disk.

[Problems to be Solved by the Invention] Therefore, in the conventional cartridge structure described above, there is a considerable gap between the outer circumference of the optical disk and the inner circumference of the retainer. Loss of optical disc due to rattling inside]
It had the disadvantage of being difficult to assemble.

An object of the present invention is to provide an optical disc cartridge that eliminates rattling of the optical disc within the cartridge.

[Means for Solving the Problems] The present invention provides an optical disc cartridge comprising a retainer for holding the outer periphery of an optical disc and a case for accommodating the retainer holding the optical disc. It is characterized by having a leaf spring that is crimped onto the peripheral surface, and a rod that is supported so as to be retractable from the retainer and operates under pressure on the inner wall of the case when the retainer is stored, and causes the spring force of the leaf spring to act on the optical disc. This is an optical disc cartridge.

[Example] Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

1 and 2, the optical disc cartridge according to the present invention includes a retainer 2 that holds the outer peripheral edge of an optical disc 1.
and a case 3 that houses a retainer 2 holding the optical disc 1. As shown in FIG. 2, one end of a leaf spring 4 is fixed to a partially cut out portion of the inner circumferential surface 2a of the retainer 2, and the free end of the leaf spring 4 is pivotally supported so as to be deformable in the inner radial direction.

On the other hand, the retainer 2 is provided with a through hole 7 facing the leaf spring 4, and the through hole 7 consists of a large diameter part and a small diameter part, and a stepped part 7a is formed between the large diameter part and the small diameter part. A rod 5 having a large diameter head 5a is inserted into and retracted from the through hole 7, and the free end of the leaf spring 4 biases the head 5a of the rod 5 to close the rear end of the rod 5. 5b is made to protrude toward the inner wall 3a of the case 3.

Since the large diameter head portion 5a of the rod 5 abuts against the stepped portion 7a of the through hole 7, the rod 5 does not come out from the through hole 7.

A case will be described in which an optical disc is housed and held in an optical disc cartridge having the above-mentioned configuration. In the embodiment, the outer peripheral edge of the optical disc 1 is held by a retainer 2, and the retainer 2 holding the optical disc is inserted from the insertion opening of the case 3. When the tip 6 of the retainer 2 approaches the bottom 8 of the case 3 (see FIG. 2), the rear end 5b of the rod 5 first comes into contact with the inner wall 3a of the bottom 8 of the case 3. When the rod 5 is brought even closer, the rod 5 stops at that position, the retainer 2 is displaced relative to the rod 5, and the retainer 2 is pushed into the case 3. At this time, the free end of the leaf spring 4 is pressed by the head 5a of the rod 5, and gradually the outer peripheral edge 1 of the optical disc 1
a to move the optical disc 1 toward the inner circumferential surface of the retainer 2 on the insertion opening side. When the tip 6 of the retainer 2 and the bottom 8 of the case 3 come into contact (see Figures 1 and 3),
The optical disc 1 is pressed against the inner peripheral surface of the retainer 2 by a leaf spring 4 and held in a fixed position. Therefore, even if there is a gap between the inner circumferential surface 2a of the retainer 2 and the outer circumferential edge 1a of the optical disk 1, the optical disk 1 is pressed against the retainer 2 by the leaf spring 4 and held in place, so that It won't rattle.

[Advantageous Effects of the Invention 1] As explained above, the present invention has the effect of eliminating wobbling of the optical disc within the optical disc cartridge and preventing damage to the optical disc by compressing the outer peripheral edge of the optical disc between the leaf spring and the inner peripheral surface of the retainer. There is.

[Brief explanation of drawings]

FIG. 1 is a plan view showing an embodiment of the present invention, FIG. 2 is a plan view before the outer periphery of the optical disk is held under pressure, and FIG. 3 is a plan view with the outer periphery of the optical disk held under pressure. It is necessary. 1... Optical disc 2... Retainer 3...
・Case 4...Flat spring 5...Rod Fig. 1

Claims (1)

[Claims] (1) In an optical disc cartridge consisting of a retainer that holds the outer peripheral edge of an optical disc and a case that houses the retainer holding the optical disc, a leaf spring that presses a part of the outer peripheral edge of the optical disc to the inner peripheral surface of the retainer; 1. An optical disc cartridge, comprising: a rod that is retractably supported by the retainer and operates upon receiving pressure from the inner wall of the case when the retainer is stored, and causes the spring force of the plate spring to act on the optical disc.