JPH0419610Y2 - - Google Patents

Description

[Detailed Description of the Invention] Technical Field The present invention relates to the improvement of an elastic sheet made of rubber or the like on which a record is placed.

BACKGROUND ART Conventionally, adapters for donut records have been made of resin or the like as a separate part and can be removed. In addition, by making the central part of the rubber sheet convex and using it by turning it inside out (published in 1982).
−165720) Can be used for both donut records and LP records. The adapter, which is a separate component, is expensive to manufacture and has the disadvantage that if the rubber sheet is turned over, it is necessary to remove dust from the back side and turn it over.

DISCLOSURE OF THE INVENTION The purpose of the present invention is to provide an elastic sheet that can be applied to donut and LP records, which reduces the unit price of the product and facilitates handling.

For this reason, the present invention has a configuration in which a cylindrical raised part is integrally formed in the center of the elastic sheet via a bending part, and by undulating this raised part from the bending part, it can be applied to donut discs and LP discs. And so.

According to this invention, by undulating the ridges, it can be applied to donut discs and LP discs, and handling is simple. Further, the raised portion can be formed integrally by utilizing the flexibility of the elastic sheet, which has the advantage of being easy to manufacture and inexpensive to provide.

BEST MODE FOR CARRYING OUT THE INVENTION Next, embodiments of the present invention will be described with reference to the drawings. Referring to FIGS. 1 and 2, which are sectional views of a player using an elastic sheet made of rubber or the like according to the present invention, a turntable 3 attached to a rotating shaft 4, an elastic sheet 5 placed on the turntable 3, It consists of a raised (convex) part 2 integrally molded with an elastic sheet 5, and a protrusion 1 for drawing out the raised part 2. The raised portion 2 is thin so that it can be easily retracted and protruded.

The turntable 3 is disc-shaped, has a center hole 6 in the center through which the rotating shaft 4 is fixed, and a surface 7 of the turntable 3 around the center hole 6.
It has a cylindrical recess 8 that is one step lower, and is depressed around the rotating shaft 4. The raised part 2 has a cylindrical shape that is one size smaller than the recessed part 8, and when pressed in the direction of the arrow 9, the state changes from FIG. 1 to the state shown in FIG. 2, and when pulled in the opposite direction, the state shown in FIG. 2 changes from the state shown in FIG. I can wake up. For this reason, the raised portion 2 has a thin wall, especially at the corner portions 10 and 11, and has good elasticity (flexibility). The raised portion 2 has a bottom surface 12 and a peripheral surface 13, and the bottom surface 12 has a center hole 14 corresponding to the rotation axis 4.
and a protrusion 1 around it. The protrusion 1 is provided so that when the raised portion 2 is pulled from the state shown in FIG. 2 to the state shown in FIG. 1, the protrusion 1 can be pinched and pulled with the fingers. This protrusion 1 is not necessarily limited to the embodiment, but may be any type as long as it can pull up the raised portion 2 from the state shown in FIG. 2 to the state shown in FIG. However, it must be such that it does not interfere with the installation of the LP disc on the surface 15 of the elastic sheet 5 in the state shown in FIG. For this reason, care is taken so that the projection 1 does not protrude from the surface 5 in the state shown in FIG. The peripheral surface 13 of the raised portion 2 corresponds to the center hole of the donut disc, and the rotating shaft 4 corresponds to the center hole of the LP disc.

When used in a donut disk, the raised portion 2 is made to protrude upward from the surface 15 as shown in FIG. Then, the donut disk is placed on the surface 15 with the raised portion 2 inserted into its center hole.

When used for LP discs, the raised part 2 is fitted into the recessed part 8 as shown in Fig. 2. Then, the rotating shaft 4 is inserted into the center hole of the LP disc, and the disc is placed on the surface 15.

As described above, according to the present invention, the undulation state can be changed while the raised portion 2 is placed on the turntable 3,
Easy to handle. Furthermore, the raised portion 2 can be formed integrally with the sheet 5, which has the practical effect of being inexpensive.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional view of the donut record when the ridge is exposed, and Fig. 2 is a sectional view of the LP record with the protrusion retracted. 1 is a drawer projection, 2 is a protrusion for donut record guide, 3 is a turntable, 4 is a rotating shaft, 5 is an elastic sheet, and 8 is a recess.

Claims (1)

[Claims for Utility Model Registration] An elastic sheet that is installed on the surface of a turntable, which has a rotating shaft penetrated through the center and a recess with a diameter larger than the rotating shaft on the peripheral surface of the center. , having a center hole in the center into which the rotating shaft can be inserted; and around the center hole, a back side position where the rotating shaft is inserted into the recess of the elastic sheet, and a front side position where it is projected upward from the recess. A first record disc has a bendable and extensible cylindrical raised part, and when the raised part is at the back surface position, a first record disc having a center hole corresponding to the rotation axis on the elastic sheet is placed on the elastic sheet. An elastic sheet for a record player, characterized in that second record discs each having a center hole corresponding to the raised portion are installed on the elastic sheet when in the surface position.