JPH09216677A - Optical disk case - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a held disk from getting out of position and being damaged, by providing a disk-clamper having a smaller outer size than the central hole of the disk in a recess of a disk tray and pressing and fixing the closed clamper provided in the case cover to the top of the clamper. SOLUTION: This optical disk case is constituted of a disk tray 1 and a case cover 2. A recess 1a to contain a disk is provided in the tray 1. And a disk clamper 4 provided with a protruded plane 4a, a protruded fixing part 4b, and a recess 4c is formed in the central part of the recess 1a. And the outer size thereof is smaller than the central hole of the disk. The case cover 2 is rotated around the protrusion 2a as the rotary center and provided with a clamper base 6 and a clamper 5 in the inside. When the disk is inserted in the disk clamper 4 and covered with the case cover 2, the top of the recess 4c is pushed to the outer peripheral direction by the protrusion 5a of the clamper 5 and the center hole of the disk is fixed by the fixing part 4b and the disk is held on the protruded plane 4a.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a case of an optical disc that houses an optical disc.

[0002]

2. Description of the Related Art FIG. 8 shows a conventional optical disk case. FIG. 8A is a view seen from the upper surface, and FIG. 8B is a side view. The optical disc case is the disc tray 1 '
And a case cover 2 ', a disc tray 1'has a concave portion 1'a for accommodating an optical disc 3, and a concave disc clamper 4'is provided at the center of the concave portion 1'a. The disc clamper 4'is an optical disc. The optical disk 3 is held on the protruding flat surface portion 4'a by elastically engaging with the central hole of the optical disk 3.

The disc clamper 4'has eight slits, is integrally formed of a member forming a recess 1'a for accommodating the optical disc 3, and is a locking portion 4'which is elastically engaged with the central hole of the optical disc 3. b is formed in an inverse taper.

A hole 1'b is provided on both side walls of the disc tray 1 ', and a case cover 2'which is opened and closed by a protrusion 2'a engaging with the hole 1'b is attached to the case cover 2'.
Claws 7'protruding inside the both side walls are provided, and the lyrics card 8 and the like are inserted between the claws 7'and the wall surface of the case cover 2 '.

The case cover 2'is rotated about the protrusion 2'a so as to cover the upper surface of the disc tray 1'where the optical disc 3 is housed in the recess 1'a, and the case covers are provided in the holes 1'c on both side walls. The projections 2'b provided on the inner sides of both side walls of 2'are engaged with each other, and the optical disk 3 is housed in the disk case.

[0006]

A conventional optical disk housed in a disk case is integrally molded of synthetic resin and elastically held by a disk clamper with elastic projections divided into eight by slits. However, it is difficult to find a locking condition based on uniform elasticity due to the precision of the molding die, molding temperature conditions, etc. Also, if the locking elasticity is weak, the optical disc will vibrate in the storage case, and An accident occurred that scratches the surface.

Further, since the operation of pressing the elastic optical disk against the elastic disk clamper is not surely performed, the disk is tilted, or the lid is not inserted to a sufficiently engaged position, so that the disk is It had a drawback that the optical disk came off from the clamper.

An object of the present invention is to securely hold an optical disc in a disc clamper by covering the optical disc stored in a disc tray with a case cover.

[0009]

According to the present invention, there is provided a disc tray having a concave portion for accommodating an optical disc, the disc tray having a disc clamper having an outer diameter smaller than the central hole of the optical disc accommodated in the concave portion, and the disc tray being openable and closable. An optical disk case characterized by comprising a disk cover which is supported by a shaft and has a clamper for pressing the top of the disk clamper in a closed state in which the optical disk is accommodated to engage the center hole of the disk with the disk clamper.

Further, according to the present invention, there is provided a concave portion for accommodating an optical disc, and a locking portion and a concave portion are provided at a top portion of a protruding circumferential portion of a disc clamper having an outer diameter smaller than a central hole of the optical disc accommodated in the concave portion. A disk cover having a disk tray and a clamper that presses the concave portion that engages the center hole of the optical disk and the engaging portion of the disk clamper in the outer peripheral direction in a closed state in which the optical disk is accommodated in the disk tray so as to be freely opened and closed. It is a case of an optical disk characterized by comprising:

Further, according to the present invention, there is provided a recess for accommodating an optical disc, and a protruding portion of a disc clamper having an outer diameter smaller than the center hole of the optical disc accommodated in the recess is divided into a plurality of engaging portions and a top portion. A disc tray having a concave portion and a concave portion that engages the center hole of the optical disc and the locking portion of the disc clamper in the closed state in which the optical disc is accommodated in the disc tray so as to be openable and closable are pressed outward. It is a case of an optical disk including a disk cover having a protruding clamper.

Further, according to the present invention, an elastic piece which extends from the side wall of the disc cover and elastically supports the protruding clamp portion, and which abuts against the back wall surface of the disc cover in the closed state, is provided. It is a case of an optical disc including a disc cover that presses a concave portion.

The present invention is also a case of an optical disk in which a closed state is maintained by engaging the clamper with the disc clamper when the disc cover is closed on the disc tray.

[0014]

DETAILED DESCRIPTION OF THE INVENTION The present invention will be described with reference to the drawings. FIG.
1A is a top view of a case of an optical disc according to the present invention, and FIG. 1B is a sectional view taken along line AA '. The case of the optical disk comprises a disk tray 1 and a case cover 2, and a recess 1 for housing the optical disk 3 in the disk tray 1.
a is provided, the central portion of the concave portion 1a has a projecting flat surface portion 4a, and the central hole of the optical disk 3 is inserted into the disk clamper 4 having the projecting locking portion 4b. Place on top.

The engaging portion 4b and the concave portion 4c of the disc clamper 4 are provided with four to eight slits and are integrally formed by a member forming the concave portion 1a for accommodating the optical disc 3, and the central hole of the optical disc 3 is formed. The locking portion 4b that engages with is formed in a shape having a cylindrical portion that locks the optical disk, although not a reverse taper, and a tapered concave portion 4c is provided on the top of the disk clamper 4. Optical disk 3
When the center hole 3a is inserted into the disc clamper 4, the insertion is directly performed up to the substantially protruding flat surface portion 4a, and is supported by the protruding flat surface portion 4a.

Holes 1b are provided on both side walls of the disc tray 1, and the clamper base 6 and the claws 7 are attached to the side wall of the case cover 2 which covers the recess 1a and is openably and closably mounted by the projections 2a engaging with the hole 1b. A space 9 is provided between the clamper base 6 and the claws 7 and the back surface of the case cover 2 for inserting the lyrics card 8 and the like.

The case cover 2 is rotated about the protrusion 2a to cover the upper surface of the disc tray 1 in which the optical disc 3 is housed in the recess 1a, and the holes 1c formed in both side walls of the disc tray 1 and the case cover 2 are covered. The projections 2b provided on the inner sides of both side walls of the optical disc 3 are engaged with each other, and the optical disc 3 is locked in a state of being housed in the case.

FIG. 2 (a) shows a top view of the optical disk case of the present invention in a state where the disk is housed, and FIG. 2 (b).
A cross-sectional view of BB 'is shown in FIG. Further, FIG. 3A shows a top view of the disk clamper 4, and FIG. 3B shows a CC ′ sectional view.
Further, FIG. 4 shows a cross-sectional view of a state in which the optical disc 3 is locked to the disc clamper 4.

The disc clamper 4 shown in FIG. 3 is provided upright in a cylindrical shape in which the projecting plane portion 4a of the disc tray 1 and the engaging portion 4b are divided upright from the disc tray 1, and the concave portion 4c is provided on the top.
Is provided.

As shown in FIG. 4, with the case cover 2 covered by the disc tray 1, the concave portion 4c at the top of the disc clamper 4 is extended in the outer peripheral direction by the protrusion 5a of the clamper 5 provided at the tip of the clamper base 6. Press to lock the center hole 3a of the disk 3 with the locking portion 4b of the disk clamper 4,
The optical disc 3 is held.

Another embodiment of the clamper 5 is shown in FIG.
5A is a top perspective view of the disc tray 1 with the case cover 2 covered, and FIG. 5B is a DD ′ cross-sectional view.
FIG. 6A is a top view of the disc clamper, and FIG.
FIG. 7 is a sectional view taken along line EE ′, and FIG. 7 is a sectional view showing a state in which the optical disc is held. The clamper base 6 extending from the side wall of the case cover 2 has the clamper 5, and the protrusion 5a and the holding portion 5b are formed at the tip of the clamper 5.
a is a concave portion 4 of the disc clamper 4 of the disc tray 1.
The protrusion 5a is fitted into the concave portion 4c and is elastically engaged with the holding portion 5b so that the locking portion 4b of the disc clamper 4 is larger than the diameter of the hole 3a of the disc 3. It is elastically deformed to a large diameter and holds the optical disk 3.

As shown in FIG. 5B, the clamper 5 has a space 9 between the rear wall surface of the case cover 2 and the lyrics card 8 or the like. Even when the lyrics card 8 or the like is not inserted, the concave portion 4c of the disc clamper 4 and the stepped holding portion 5b of the protrusion 5a of the clamper 5 elastically engage the lyrics card 8 as well as the clamper of the clamper base 6. Elastic piece 6b from the position approaching 5
The clamper base 6 is provided on the side wall of the case cover 2 so that the front end portion 6 a of the clamp cover 6 presses against the back wall of the lid of the case cover 2.

When the optical disc 3 is stored in the disc storage portion 1a of the disc tray 1 and is covered with the case cover 2, the tip end portion 6a of the elastic piece 6b abuts the back wall surface of the case cover 2 and the clamper base 6 is clamped. Protrusion 5 of 5
By strongly pressing the concave portion 4c of the disk clamper 4 at a, the elastic engagement with the holding portion 5b is achieved, and the locking portion 4bw
The optical disk 3 is opened outward and is elastically locked at the center hole of the optical disk 3 by the locking portion 4b. The disc tray 1 and the disc cover 2 are locked by the concave portion 4c of the disc clamper 4 and the holding portion 5b of the clamper base 6, and in this case, the hole 1
It is possible to eliminate the locking caused by c and the protrusion 2b.

[0024]

According to the present invention, the optical disc is held when the optical disc is stored and the case is closed. Therefore, the optical disc is reliably stored, and the optical disc held and held in the holding portion vibrates. Therefore, it can be prevented from coming off and being damaged.

[Brief description of drawings]

FIG. 1 is a diagram showing a case of an optical disc according to the present invention.

FIG. 2 is a view showing a state in which the case of the optical disc according to the present invention is closed.

FIG. 3 is a diagram showing a disk clamper.

FIG. 4 is a view showing a state in which a disc is held.

5 is a diagram showing another embodiment of the present invention, FIG.
Is a top perspective view and FIG. 5B is a sectional view.

6A and 6B are views showing a disk clamper, FIG. 6A is a top view, and FIG. 6B is a sectional view.

FIG. 7 is a cross-sectional view showing a state in which a disc is held.

FIG. 8 is a diagram showing a case of a conventional optical disc.

[Explanation of symbols]

 1 Disc Tray 1a Recess 1b, 1c Hole 2 Disc Cover 2a, 2b Protrusion 3 Optical Disc 3a Center Hole 4 Disc Clamper 4a Protruding Plane 4b Locking 4c Recess 5 Clamper 5a Protrusion 5b Holding 6 Clamper Base 6a Tip 6b Elastic piece 7 Claw 8 Lyrics card 9 Space

Claims (5)

[Claims] 1. A disc tray having a concave portion for accommodating an optical disc, the disc tray having a disc clamper having an outer diameter smaller than the central hole of the optical disc accommodated in the concave portion, and the optical disc rotatably supported by the disc tray. An optical disk case, comprising: a disk cover having a clamper that presses the top of the disk clamper to engage the center hole of the disk with the disk clamper in a closed state in which the disk is stored. 2. A disc having a concave portion for accommodating an optical disc, and having a locking portion at a protruding circumferential portion and a concave portion at a top portion of a disc clamper having an outer diameter smaller than a central hole of the optical disc accommodated in the concave portion. The tray and the recessed portion that engages the center hole of the optical disc and the locking portion of the disc clamper in a closed state in which the optical disc is accommodated in the disc tray so as to be openable and closable are pressed outward. An optical disk case comprising a disk cover having a clamper. 3. A locking portion and a top portion, each of which has a concave portion for accommodating an optical disc, wherein a protruding circumferential portion of a disc clamper having an outer diameter smaller than a central hole of the optical disc accommodated in the concave portion is divided into a plurality of portions. Outer circumference of a disc tray having a concave portion and the concave portion that engages the center hole of the optical disc and the locking portion of the disc clamper in a closed state in which the optical disc is accommodated in the disc tray so as to be openable and closable. An optical disk case comprising a disk cover having a protruding clamper that presses in a direction. 4. An elastic piece which extends from a side wall of the disk cover and elastically supports a protruding clamp part, and which abuts a back wall surface of the disk cover when the disk cover is in a closed state. The optical disk case according to any one of claims 1 to 3, further comprising a disk cover that is pressed. 5. The optical disc case according to claim 1, wherein when the disc cover is closed on the disc tray, the clamper is engaged with the disc clamper to maintain the closed state.