WO2007077927A1

WO2007077927A1 - Disc and disc adaptor

Info

Publication number: WO2007077927A1
Application number: PCT/JP2006/326253
Authority: WO
Inventors: Yorio Takahashi
Original assignee: Matsushita Electric Industrial Co., Ltd.
Priority date: 2006-01-06
Filing date: 2006-12-28
Publication date: 2007-07-12
Also published as: JP2007184042A

Abstract

Provided are a disc which can mount a disc adaptor without having the disc adaptor protruding from the thickness of the disc, and the disc adaptor suitable for holding the disc. The disc (2) formed in disc-shape is characterized in that a disc holding section (21), which is composed of a protruding section or a recessed section, is provided in the circumference direction on the outer circumference plane of the disc (2).

Description

Specification

Disk and disk adapter

Technical field

The present invention relates to a disc such as a CD or a DVD, and a disc adapter that holds the disc.

Background art

[0002] Fig. 8 to Fig. 10 show conventional disk adapters (Patent Document 1).

8 is a plan view of the disk adapter, FIG. 9 is an enlarged plan view of the main part of the disk adapter, and FIG. 10 is a cross-sectional view taken along the line XX of FIG.

As shown in FIG. 8, in the conventional disk adapter, three hinge portions 110 are formed at equal intervals on the inner periphery of an adapter main body 101 formed in a ring shape. A pressing part 120 is formed. The pressing portion 120 is formed with a front projection 130 that supports one surface of the disk 102. Further, a back projection 140 that supports the other surface of the disk 102 is formed between the hinge portions 110.

As shown in FIGS. 9 and 10, the pressing portion 120 abuts on the outer periphery of the disc 102 and presses the disc 102 in the center direction by the elastic force of the hinge portion 110.

Patent Document 1: Design Registration No. 873169

Disclosure of the invention

Problems to be solved by the invention

However, in the conventional disk adapter, the front protrusion 130 is formed on one surface, and the back protrusion 140 is formed on the other surface. The front protrusion 130 and the back protrusion 140 are formed on the disk 102. It protrudes from the thickness.

On the other hand, in an optical disk device, an optical lens is generally composed of an actuator coil that can move in a radius and a focus direction, and focusing control is performed at a position determined by the optical design of the disk and the pickup. The optical lens is controlled at a substantially constant distance on the data surface of the disc.

However, depending on the optical design of the disc and pickup, When reproducing the data near the outermost circumference where the distance between the disc and the optical lens is reduced, the optical lens or the optical lens is provided to protrude from the optical lens for the purpose of protecting the optical lens. If the optical coil protection member (lens protector) is caught, the actuator coil may be damaged.

In addition, the optical design is such that a sufficient distance can be secured during focusing. Even in the case of a combination of a disc and an optical pickup, focus control is lost due to impact, damage to the disc, or failure of interlayer movement of a multilayer disc. The same possibility exists.

Therefore, an object of the present invention is to provide a disc that can be fitted with a disc adapter that does not protrude beyond the thickness of the disc, and a disc adapter that is suitable for holding the disc.

Means for solving the problem

[0005] The disc of the present invention according to claim 1 is a disc formed into a disc shape, and a disc holding portion having a convex portion or a concave force is provided in the circumferential direction on the outer peripheral surface of the disc. Features.

A second aspect of the present invention is the disk according to the first aspect, wherein the disk holding portion is formed on the entire circumference of the outer peripheral surface.

According to a third aspect of the present invention, in the disk according to the second aspect, a rotation preventing portion having a convex portion or a concave portion force is provided on a part of the outer peripheral surface.

The present invention according to claim 4 is characterized in that in the disk according to claim 1, at least three of the disk holding portions are provided, and the respective disk holding portions are provided at equal intervals.

According to a fifth aspect of the present invention, in the disk according to the first aspect, at least three of the disk holding portions are provided in an arc shape on a part of the outer peripheral surface, and the respective disk holding portions are equally spaced. It is arranged.

The disk adapter of the present invention according to claim 6 is a disk adapter for holding the disk according to any one of claims 1 to 5, wherein the adapter main body is formed in a ring shape, and the adapter main body A disk holding and receiving portion formed on the inner peripheral surface, The disk holding / receiving part is constituted by a concave part or a convex part provided in a circumferential direction, and the disk holding / receiving part is engaged with the disk holding part.

A seventh aspect of the present invention is the disk adapter according to the sixth aspect, further comprising an anti-rotation receiving portion formed on an inner peripheral surface of the adapter body, wherein the anti-rotation receiving portion is a concave portion or a convex portion. The anti-rotation receiving part is engaged with the anti-rotation part.

The invention's effect

[0006] According to the present invention, the disk adapter can be configured without projecting the disk surface force.

Brief Description of Drawings

FIG. 1 is a plan view showing a state in which a disk according to an embodiment of the present invention is mounted on a disk adapter.

[Figure 2] Top view of the disc

[Figure 3] Top view of the disk adapter

[Fig.4] X-X sectional view of Fig.1

[Fig.5] Y-Y cross section of Fig.1

FIG. 6 is a sectional view of a disk and a disk adapter according to another embodiment of the present invention.

FIG. 7 is a sectional view of a disk and a disk adapter according to still another embodiment of the present invention.

[Figure 8] Top view of conventional disk adapter

[Figure 9] Enlarged plan view of the main part of the disk adapter

[Fig.10] X-X sectional view of Fig. 9

Explanation of symbols

[0008] 1 Adapter body

2 discs

10 Hinge part

15 Disc holder

21 Disc holder

22 Anti-rotation part 30 Anti-rotation receiving part

BEST MODE FOR CARRYING OUT THE INVENTION

The disc according to the first embodiment of the present invention is provided with a disc holding portion having a convex portion or a concave portion force in the circumferential direction on the outer peripheral surface of the disc. According to the present embodiment, since the disc holding portion is provided on the outer peripheral surface of the disc, the disc holding portion can be attached to the disc adapter using this disc holding portion, so that the disc adapter also protrudes the disc surface force. It can be configured without any problems.

In the second embodiment of the present invention, in the disk according to the first embodiment, the disk holding portion is formed on the entire outer peripheral surface. According to the present embodiment, since the engagement range is widened by providing the disk holding portion on the entire circumference of the outer peripheral surface of the disk, the disk can be securely held by the disk adapter, and the eccentricity during rotation of the disk can be achieved. Can be eliminated.

According to the third embodiment of the present invention, in the disk according to the second embodiment, a rotation preventing part having a convex part or a concave part force is provided on a part of the circumferential surface. According to this embodiment, it is possible to eliminate slippage between the disk and the disk adapter even when the disk rotates at high speed.

In the fourth embodiment of the present invention, at least three disk holding portions are provided in the disc according to the first embodiment, and the respective disk holding portions are provided at equal intervals. According to the present embodiment, it is possible to eliminate eccentricity when the disk rotates.

According to a fifth embodiment of the present invention, in the disc according to the first embodiment, at least three disc holding portions are provided in an arc shape on a part of the outer peripheral surface, and the respective disc holding portions are arranged at equal intervals. It is a thing. According to the present embodiment, it is possible to eliminate slippage between the disk and the disk adapter even when the disk is rotating at a high speed, and to eliminate eccentricity when the disk is rotated.

In the disc adapter according to the sixth embodiment of the present invention, the disc holding / receiving portion is constituted by a concave portion or a convex portion provided in the circumferential direction, and the disc holding / receiving portion engages with the disc holding portion. According to this embodiment, the disk adapter can be configured without protruding from the disk surface. According to a seventh embodiment of the present invention, in the disc adapter according to the sixth embodiment, the rotation prevention receiving portion is configured by a concave portion or a convex portion, and the rotation prevention receiving portion is engaged with the rotation prevention portion. . According to the present embodiment, it is possible to eliminate slippage between the disk and the disk adapter even when the disk rotates at high speed.

Example 1

Hereinafter, a disk and a disk adapter according to an embodiment of the present invention will be described.

1 is a plan view showing a state in which the disk according to this embodiment is mounted on the disk adapter, FIG. 2 is a plan view of the disk, FIG. 3 is a plan view of the disk adapter, and FIG. Fig. 5 is a cross-sectional view taken along the line Y-Y in Fig. 1. In the figure, R indicates the standard radius of the disk.

As shown in the figure, in the disk adapter of the present embodiment, three hinge portions 10 are formed at equal intervals on the inner periphery of the adapter body 1 formed in a ring shape. An anti-rotation receiving portion 30 composed of a portion is formed. A disk holding / receiving portion 15 is formed on the inner peripheral surface of the adapter body 1 by a convex portion provided in the circumferential direction. Further, a back projection 40 that supports the other surface of the disk 2 is formed between the hinge portions 10.

The hinge portion 10 includes a pair of cuts 11 formed so that the inner peripheral force of the adapter main body 1 is also directed toward the outer peripheral direction, and a groove 12 formed between the pair of cuts 11. Therefore, the hinge portion 10 is connected to the adapter main body 1 by the connecting portion 13 formed between each notch 11 and the end of the groove 12, so that the hinge portion 10 is elastic with respect to the adapter main body 1. The structure is deformable. The three hinge parts 10 formed on the adapter body 1 all have the same configuration.

On the other hand, the disc 2 is provided with a disc holding portion 21 that also has three arcuate concave forces in a circumferential direction on a part of the outer peripheral surface 2A of the disc 2. The three disk holding parts 21 are arranged at equal intervals. These three disc holding portions 21 engage with the disc holding receiving portion 15. In addition, the disc 2 is provided with the rotation preventing portions 22 having three concave forces on the outer peripheral surface 2A of the disc 2 at equal intervals.

[0011] In the present embodiment, the disk holding portion 21 is constituted by three arc-shaped concave portions. For this reason, the disc holding portion 21 also provides a force rotation prevention portion 22 that can prevent slipping when the adapter body 1 and the disc 2 are rotated. It is possible to prevent slipping during rotation.

In the present embodiment, the 1S disk holding part 21 in which the disk holding part 21 is constituted by a plurality of arc-shaped recesses may be formed on the entire circumference of the outer peripheral surface 2A. As described above, when the disc holding portion 21 is formed on the entire circumference of the outer peripheral surface 2A, the anti-rotation portion 22 can reliably prevent the adapter body 1 and the disc 2 from slipping during rotation. . The rotation prevention unit 22 should have at least one power.

Further, in this embodiment, the disk holding portion 21 is constituted by a concave portion, the disk holding receiving portion 15 is constituted by a convex portion, the disk holding portion 21 is constituted by a convex portion, and the disc holding receiving portion 15 is constituted by a concave portion. May be.

According to the present embodiment, by engaging the disc holding portion 21 and the disc holding receiving portion 15, the adapter main body 1 can be configured without protruding the disc surface force. In this embodiment, the power disc 2 provided with the back projection 40 is arranged on a surface different from the back projection 40 on the laser beam incident surface 2B of the disc 2 so that at least the laser beam entrance surface 2B is connected to the adapter main unit 1 with the disc 2. It can be configured without protruding from the surface. In this embodiment, by providing the back protrusion 40, the disk 2 can be sandwiched between the back protrusion 40 and the disk holding receiving portion 15, so that the disk 2 is securely held in the adapter body 1. be able to.

Note that the back projection 40 may be omitted. By not providing this back projection 40, the adapter body 1 can be configured with a thickness less than or equal to the thickness of the disk 2, and the mounting of the disk 2 on the adapter body 1 can be made upside down. Can do.

Example 2

Next, a disk and a disk adapter according to another embodiment of the present invention will be described. FIG. 6 is a sectional view of a disk and a disk adapter according to another embodiment, and corresponds to FIG. FIG. 7 is a sectional view of a disk and a disk adapter according to still another embodiment, and corresponds to FIG. In Fig. 6 and Fig. 7, R indicates the standard radius of the disk.

In the embodiment shown in FIG. 6 and FIG. 7, a step is formed on the outer peripheral surface 2A of the disk 2 respectively. A disc holding portion 21 is constituted by the circumferential convex portion formed. Further, a disk holding / receiving part 15 is formed on the inner peripheral surface of the adapter body 1 corresponding to the circumferential recess formed by the step.

In the embodiment shown in FIG. 6, one surface of the substrate 2C is formed with a standard radius R of the disk 2 and the other surface is formed with a radius smaller than the standard radius R of the disk 2, and the standard surface is formed on the other surface. The recording layer 2D having a radius smaller than the radius R and the cover layer 2E are bonded together.

In the embodiment shown in FIG. 7, one surface of the substrate 2C is formed with a radius larger than the standard radius of the disk 2, and the other surface is formed with the standard radius R of the disk 2, and the other surface is formed. A recording layer 2D having a standard radius R and a cover layer 2E are bonded to the surface.

In the embodiments shown in FIGS. 6 and 7, as in the embodiments shown in FIGS. 1 to 5, when a plurality of disk holding portions 21 are formed in the circumferential direction, the respective disk holding portions are used. Set 21 at regular intervals. Further, the disk holding portion 21 may be formed on the entire circumference of the outer peripheral surface 2A. In particular, when the disk holding portion 21 is formed on the entire circumference of the outer peripheral surface 2A, it is preferable to provide the rotation preventing portion described in the above embodiment. In the present embodiment, the case where the back protrusion 40 is provided is illustrated, but the configuration without the back protrusion 40 may be used.

As described above, according to the present embodiment, the disk holding portion 21 is provided on the outer peripheral surface of the disk 2 and engaged with the disk holding receiving portion 15 of the adapter main body 1, so that at least the adapter main body 1 is at least. One surface can be configured so that the force on the disk surface does not protrude. In addition, according to the present embodiment, by providing the disk holding portion 21 on the entire outer periphery of the disk 2, the engagement range with the disk holding receiving portion 15 of the adapter body 1 is widened, so that the disk can be reliably connected. 2 can be held by the disk adapter 1 and the eccentricity when the disk 2 rotates can be eliminated.

In addition, according to the present embodiment, the disk 2 and the adapter main body 1 can be provided even when the disk 2 is rotated at a high speed by providing the rotation preventing part 22 including a convex part or a concave part on a part of the outer peripheral surface of the disk 2. And slip.

In addition, according to this embodiment, at least three anti-rotation portions 22 are provided, and By providing the stop portions 22 at equal intervals, the eccentricity when the disk 2 is rotated can be eliminated. Further, according to this embodiment, at least three disk holding portions 21 are provided in a circular arc shape on a part of the outer peripheral surface 2A, and the respective disk holding portions 21 are arranged at equal intervals, so that Even at high rotation, the disc 2 and the adapter body 1 can be prevented from slipping, and the eccentricity when the disc 2 is rotated can be eliminated.

Industrial applicability

The disc and the disc adapter of the present invention can be used as an 8-centre disc and a disc adapter for reproducing the disc in a disc device that cannot be reproduced conventionally, such as a slim slot type or a half-height drive vertical posture.

Claims

The scope of the claims

[1] A disc formed into a disc shape, wherein a disc holding portion including a convex portion or a concave portion is provided in a circumferential direction on the outer peripheral surface of the disc.

[2] The disc according to [1], wherein the disc holding portion is formed on the entire circumference of the outer peripheral surface.

[3] The disk according to [2], wherein a rotation preventing portion having a convex portion or a concave force is provided on a part of the outer peripheral surface.

4. The disk according to claim 1, wherein at least three of the disk holding parts are provided, and each of the disk holding parts is provided at equal intervals.

[5] The disc according to claim 1, wherein at least three of the disk holding parts are provided in a circular arc shape on a part of the outer peripheral surface, and the disk holding parts are arranged at equal intervals. School.

[6] A disk adapter for holding the disk according to any one of claims 1 to 5, wherein the adapter main body is formed in a ring shape, and the disk holding is formed on the inner peripheral surface of the adapter main body. A disk adapter, comprising: a receiving portion; wherein the disk holding receiving portion is configured by a concave portion or a convex portion provided in a circumferential direction, and the disk holding receiving portion engages with the disk holding portion.

[7] An anti-rotation receiving portion formed on an inner peripheral surface of the adapter main body is provided, the anti-rotation receiving portion is constituted by a concave portion or a convex portion, and the anti-rotation receiving portion engages with the anti-rotation portion. The disk adapter according to claim 6.