JPH03280285A - Disk rotating jig - Google Patents

Abstract

PURPOSE:To obtain an always effective engaged state by forming plural projected parts on a disk holding part to be inserted into the disk center hole of a jig consisting of an elastic material. CONSTITUTION:The disk holding part 16 formed by plural tape parts 17 and plural projected parts 15 is formed on a disk inserting part 11 to be inserted into the disk center hole of the disk rotating jig 10 made of an elastic material. The dispersion of the hole diameter of each disk is absorbed by the elastic deformation of the projected parts 15, the disk engaging state is made always effective and the disk can easily be loaded and unloaded.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention can be used, for example, when cleaning a disk-shaped information recording medium that records and reproduces information using a light beam while it is stored in a cartridge. This invention relates to a disk rotation jig.

[Prior Art] Conventionally, when cleaning a disc stored in a cartridge, the shutter of the cartridge is opened and held, the exposed part of the disc is wiped with a soft cloth, and the disc is cleaned. Removes dirt, dust, etc. adhering to the Once this is finished, cleaning can be continued by rotating the disk to successively expose the areas that have not been cleaned yet. To rotate the disk, a rotating jig is used to avoid touching the disk. ing.

FIGS. 8 and 9 illustrate conventional rotating jigs. These rotating jigs are made of a material with relatively good elasticity, such as rubber, and have an insertion part 3 that is inserted into the center hole 2 of the disk D, a positioning surface 4 that receives the lower surface of the disk D, and a positioning surface 4 that receives the lower surface of the disk D. It has a body part 5 that continues downward, and by rotating this body part 5, a disk D stored in a cartridge (not shown) is rotated. Insertion part 3
In order to facilitate insertion into the center hole 2, the outer peripheral surface thereof is tapered. In the conventional example shown in FIG. 8, if the diameter d1 of the root portion of the insertion portion 3, that is, the portion that intersects with the positioning surface 4, is not approximately the same diameter as the diameter d2 of the center hole 2 of the disk D, the disk D cannot be rotated. Since it is not fixed to a tool, highly accurate dimensional control is required. However, in reality, both the diameters d1 and d2 are inevitably subject to some variation, so it is often impossible to fix the disk D to the rotating jig.

Therefore, in order to absorb these dimensional variations, a bulge 6 is formed at the base of the insertion portion 3 slightly above the root, as shown in FIG. It has been proposed that the radius is larger than the radius of the center hole of the disk D by a dimension t.

[Problems to be Solved by the Invention] In the conventional example shown in FIG. There is a problem that D cannot be fixed, and in the conventional example shown in FIG.
Since the diameter of the entire circumferential surface of the disk D must be reduced, there is a problem in that a considerably large insertion force is required, and there is also the risk of damaging the disk D if it is pushed in recklessly.

SUMMARY OF THE INVENTION An object of the present invention is to provide a disk rotating jig that can absorb variations in the diameter of the center hole of the disk and that can easily and reliably fix the disk with a small insertion force.

[Means for Solving the Problems] In order to achieve the above object, a disk rotating jig according to the present invention includes an insertion portion that fits into a center hole of a disk-shaped information recording medium, and an insertion portion that fits into a center hole of a disk-shaped information recording medium; In a disk rotating jig in which a positioning surface for receiving a lower surface and a body section continuous below the positioning surface are integrally formed of an elastic material, a disk holding section of the insertion section protrudes radially from the center of the information recording medium. It is characterized by forming a plurality of convex portions that press against the inner surface of the hole.

[Function] In the disk rotating jig having the above configuration, when the insertion portion is fitted into the center hole of the disk, the convex portion formed at the base of the insertion portion causes elastic deformation, applying appropriate pressure to the disk. It can be held and fixed.

[Example] The present invention will be described in detail based on the example illustrated in FIGS. 1 to 7.

FIGS. 1 to 3 show an embodiment of a disk rotating jig 10 according to the present invention, and this rotating jig 1o has an insertion portion 11 having a tapered peripheral surface made of an elastic material such as rubber. ,
It is the same as the conventional example in that it has a positioning surface 12 that receives the lower surface of the disk and a body section 13 that continues below the positioning surface 12, but the disk holding section of the insertion section 11, that is, the outer periphery of the root of the insertion section 11 is cut in the axial direction. A plurality of convex portions 15 protruding in the radial direction are formed between, for example, five cut portions 14. The disk holding portion 16 of these convex portions 15 that contacts the inner surface of the center hole of the disk is perpendicular to the positioning tool 2, and the upper portion 17 thereof is flush with the tapered circumferential surface of the insertion portion 11. The radial dimension of each convex portion 15 is made slightly larger than the diameter of the center hole of the disk so that the outer surface of each convex portion 15 is pressed against the inner surface of the center hole when it is fitted into the center hole of the disk. The radial dimension of the notch 14 is considerably small.

FIG. 4 shows the relationship between this rotating jig 10 and a disk D stored in a cartridge C. The cartridge C is provided with a shutter Ca and a shutter stopper cb, and the disk D has a center hole Da. It is perforated.

When cleaning the disk D, the shutter Ca is opened by the shutter stopper cb and kept in that state. In this state, if the rotating jig 10 is inserted into the center hole Da of the disk D and the disk D is fixed to the rotating jig 10, the disk D can be rotated by holding the body 13 of the rotating jig 10. can be freely rotated while stored in the cartridge C.

Therefore, by wiping the exposed portion of the disk D with a cloth or the like to clean it and then rotating the disk D, the entire surface of the disk D can be cleaned by sequentially exposing the non-cleaned portions.

FIG. 5 shows the fitted state of the rotating jig 10 and the disk D, and FIG. 6 shows the relationship between the rotating jig 10 and the center hole Da of the disk, and shows the hatching of the convex portion 15. The attached portion 15a is a portion that intersects with the center hole Da of the disk D, and when the disk D is forcibly fitted, the convex portion 1
Due to the elastic deformation of 5, it will be pushed in by that amount. Since the protrusions 15 have the notches 14 between them, they are relatively easy to elastically deform, and by appropriately selecting the number, shape, and dimensions of each protrusion 15, such as the height and width of each protrusion 15, it is possible to An appropriate fitted state with D can be obtained.

In addition, in the above-mentioned embodiment, the attachment of the insertion part 11 is the case where the root part, that is, the disk holding part 16 has the maximum diameter, or the case where the insertion part 11 has the maximum diameter in the middle part as shown in FIG. Similarly, for the type having the bulging portion 18, the cut portion 1 is
4 and a convex portion 15 can be provided. This example is a case where the present invention is applied to the conventional example shown in FIG.
Unlike the case shown in FIG. 9, since the bulging portion 18 is easily elastically deformed, it is possible to fit the disk D with a relatively small insertion force.

[Effects of the Invention] As explained above, the disk rotation jig according to the present invention has the following advantages:
Since the portion that contacts the center hole of the disk, that is, the disk holding portion, has a convex shape, elastic deformation of the convex portion absorbs variations in the diameter of the center hole of the disk, making it possible to always obtain a good mating condition. Moreover, it has the advantage that it can be easily inserted into and removed from the disk with a relatively small insertion force, and can be securely fixed.

[Brief explanation of drawings]

Drawings 1 to 7 show an embodiment of the disk rotation jig according to the present invention, in which Fig. 1 is a perspective view, Fig. 2 is a plan view, and Fig. 3 is a plan view.
Figure 4 is a front view, Figure 4 is a perspective view of the state in which it is used, Figure 5 is a front view of the state in which it is fitted with a disk, Figure 6 is a plan view, and Figure 7 is a front view.
The figure is a front view of another embodiment, and FIGS. 8 and 9 are front views of conventional examples, respectively. 11 is an insertion section, 12 is a positioning surface, 13 is a body section, 1
4 is a notch, 15 is a convex portion, and 16 is a disk holding portion.

Claims (1)

[Claims] 1. A rotating disc in which an insertion part that fits into the center hole of a disc-shaped information recording medium, a positioning surface that receives the lower surface of the information recording medium, and a body part that continues below the positioning surface are integrally made of an elastic material. A disk rotating jig, characterized in that a plurality of convex portions are formed on the disk holding portion of the insertion portion, the protrusions projecting in the radial direction and coming into pressure contact with the inner surface of the center hole of the information recording medium.