JPH09188375A - Disk holder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent burrs from separating from a disk when the resin disk is held, by providing a seat receiving the outer peripheral end of the disk at the bottom face of a V-shaped groove. SOLUTION: A V-shaped groove 2 to guide a disk 1 is provided in the constitution of a disk holder device 3 and a seat 2b receiving the outer peripheral end 1a of the disk 1 is provided at the bottom face 2a of the V-shaped groove 2. The width (w) of the bottom face 2a of the V-shaped groove 2 is made wider than the thickness (t) of the disk 1 and the side face of the disk 1 is protected from a pressure. But if the bottom face is too wide, the disk plays and hence, the width is made larger by 0.2mm or so than the thickness (t) of the disk 1. The angle θ of the V-shaped groove 2 is made smaller than 90 degrees and the height (a) of the receive seat 2b is made longer than the length (b) of the burr 4 and further, the burr 4 at both ends of the outer peripheral end 1a of the disk 1 is prevented from getting into contact with the bottom face 2a. When the burr 4 exists at the center of the thickness of the disk 1, a receive groove 2c is provided at the center of the receive seat 2b.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk holding device for housing and fixing a disk for a signal recording medium.

[0002]

2. Description of the Related Art A conventional disk holding device for housing and fixing a disk for a signal recording medium is shown in FIG.
There were those as shown in (a) and (b). That is, the outer peripheral end 1a of the disk 1 is received by the V-shaped groove 2 of the plate-shaped holding device 3 having the V-shaped groove 2. This device has the effect that the disc 1 fits into the V-shaped groove 2,
It was suitable for fixing and handling the disc 1. Also,
During transportation, the outer peripheral end 1a was pressed and fixed from above and below as shown in FIG. There was no problem if the disk 1 was made of glass or metal, but if the disk 1 was made of resin,
The following problems occur. Load and thermal expansion from the side surface of the V-shaped groove 2 of the holding device 3,
When pressure is applied due to contraction or the like, the burr 4 existing on the outer peripheral end 1a of the disc 1 is separated from the disc 1 and becomes dust (see FIG. 6C). When the burr 4 breaks, if the disk 1 has a film-forming surface, a crack is generated on the film-forming surface. The entire resin disk is deformed according to the magnitude of the pressure from the side surface and the bottom surface of the V-shaped groove 2, and the desired flatness cannot be obtained.

[0003]

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to provide a disk holding device in which burr does not occur even if a resin disk is held.

[0004]

In order to solve such a problem, a disk holding device according to the invention of claim 1 receives a V-shaped groove and an outer peripheral end portion of the disk provided on the bottom surface of the V-shaped groove. The structure is provided with a receiving seat, and the outer peripheral end portion of the disk is received by the receiving seat so that the burr of the disk is not broken.

A disc holding device according to a second aspect of the present invention is the disc holding device according to the first aspect in which a receiving groove is provided in a central portion of a receiving seat, and when the burr is present in the center of the thickness of the disc. Let the burr escape in the groove.

The invention of a disk holding device according to the invention of claim 3 is characterized in that the width of the bottom surface of the V-shaped groove is made wider than the thickness of the disk. The position where the burr of the disc does not touch the pedestal.

According to a fourth aspect of the present invention, there is provided a disk holding device according to the first aspect, wherein the height of the receiving seat is larger than the length of the burr of the disk. Burr did not touch the bottom of the V-shaped groove.

According to a fifth aspect of the present invention, there is provided a disk holding device having a vertical side wall provided at the bottom of the V-shaped groove. I positioned both sides of the disc so that it would not rattle.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of the present invention will be described below with reference to FIGS.

First Embodiment FIG. 1A shows a disk holding device of the present invention, and FIG.
FIG. 1A is an enlarged view of an outer peripheral end portion of the disc shown in FIG. In this embodiment, the holding device 3 for the disc 1 is provided with a V-shaped groove 2 for guiding the disc 1, and a bottom surface 2a of the V-shaped groove 2 receives the outer peripheral end 1a of the disc 1. A seat 2b is provided.

The dimensional relationship of each part is as follows. From the thickness t of the disk 1 to the width w of the bottom surface 2a of the V-shaped groove 2
Is widened so that no pressure is applied to the side surface of the disk 1. However, if the width w of the bottom surface 2a is too wide, the rattling of the disc 1 becomes large, so the thickness t is set to about 0.2 mm larger than the thickness t of the disc 1.

The angle θ of the V-shaped groove 2 is within 90 degrees. This is because, when the disc 1 rattles in the holding device 3, if the angle is 90 degrees or more, the burr 4 is bent on the side surface of the V-shaped groove 2 and is broken, so that the burr 4 is detached from the disc 1.

The height a of the receiving seat 2b is set to the length b of the burr 4.
Make it bigger. As a result, as shown in FIG. 2A, the burrs 4 present on both edges of the outer peripheral end 1a of the disc 1 do not come into contact with the bottom surface 2a.

Second Embodiment Example FIG. 1A is a side sectional view of a disk holding device according to a second embodiment example of the present invention, in which a burr 4 is present at the center of the thickness of the disk 1. In the center of the receiving seat 2b, the receiving groove 2c
Is provided. With this configuration, even when the burr 4 exists at the center of the thickness of the disc 1 as shown in FIG. 2B, the burr 4 does not break. Further, the receiving groove 2c may be directly provided on the bottom surface 2a of the V groove 2 without the receiving seat 2b.

Third Embodiment FIG. 3 is a side view of a holding device and a disk according to a third embodiment of the present invention. The difference from the first embodiment is that V
This is the point that side walls 2d1 and 2d2 perpendicular to the bottom of the groove 2 are provided. Both side surfaces of the disk 1 are positioned by the side walls 2d1 and 2d2, and the outer peripheral end 1a of the disk 1 receives the seat 2b.
Be sure to be placed on.

Next, an application example of the present invention will be described with reference to FIGS. FIG. 4 shows a disk holding device used in a processing step such as sputtering of the disk 1. A plurality of holding devices 3a, 3b, 3c are mounted on a mounting base 5 with arcuate bolts 6 to support the lower end of the disk 1. On the upper part of the disk 1, a movable arm 7 having a holding device 3d attached to its tip and which moves up and down is provided.
Hold the top of.

FIG. 5 shows that a large number of discs are stored and stored.
FIG. 9 is a perspective view of a cassette-type container 8 used during transportation, in which grooves 9 for accommodating the disks 1 at equal intervals are formed on an inner wall of a main body 9.
a is perforated, and the disc 1 is placed inside the lid 10.
Is provided with a ridge 10a for pressing the upper part of the. The holding device 3 is provided at the lowermost end of the groove 9a and the protrusion 10a of the lid 10.

In these application examples, since no dust is generated due to the removal of the burr 4 when handling the disc 1, various processing steps are not adversely affected.

[0019]

According to the present invention, it is possible to provide a disc holding device in which burrs do not separate from a disc.

[Brief description of the drawings]

1A is a side sectional view of a disk holding device according to a first embodiment of the present invention, and FIG. 1B is a side sectional view of a disk holding device according to a second embodiment of the present invention.

2A is an enlarged view of an outer peripheral end of a disc, and FIG. 2B is an enlarged view of an outer peripheral end of a disc.

FIG. 3 is a side sectional view of a disk holding device according to a third embodiment of the present invention.

4A and 4B show a disk holding device of an application example of the invention, in which FIG. 4A is a side view and FIG.

FIG. 5 is a perspective view of a cassette type container to which the present invention is applied.

FIG. 6 is a perspective view showing a conventional disc holding device, in which (a) a type that supports the lower end of the disc, (b) a perspective view that supports the upper and lower sides of the disc, and (c) a partially enlarged side sectional view.

[Explanation of symbols]

 1 Disc 1a Outer end 2 V-shaped groove 2a Bottom surface 2b Receiving seat 2c Receiving groove 2d1, 2d2 Side wall 3, 3a, 3b, 3c, 3d Retaining device 4 Burr 5 Mounting base 6 Bolt 7 Movable arm 8 Cassette container 9 Main body 9a groove 10 lid 10a ridge

Claims (5)

[Claims] 1. A disk holding device comprising a V-shaped groove and a receiving seat for receiving an outer peripheral end portion of the disk provided on the bottom surface of the V-shaped groove. 2. The disk holding device according to claim 1, wherein a receiving groove is provided in a central portion of the receiving seat. 3. The width of the bottom surface of the V-shaped groove is made wider than the thickness of the disk.
3. The disk holding device according to claim 1. 4. The disk holding device according to claim 1, wherein the height of the receiving seat is larger than the length of the burr of the disk. 5. The disk holding device according to claim 1, wherein a vertical side wall is provided on a bottom portion of the V-shaped groove.