Disc clamping device

Abstract

The invention discloses a disc clamping device, which is rotatably arranged on a substrate of an optical disc player; the substrate is provided with a center hole; the periphery of the center hole is provided with a plurality of fan-shaped grooves at equal intervals; the same side edge of each fan-shaped groove is provided with a convex block; a clamping disc is arranged in the center hole, and the peripheral surface of the clamping disc is provided with a groove; an inner hole of a circular ring aligns with the center hole, and the periphery of the inner hole is provided with notches at a position corresponding to each fan-shaped groove; the back of the circular ring is concavely provided with a circular groove; the circular groove is positioned at the same end edge of each notch, and the same side edges in which the same fan-shaped grooves are provided with the convex blocks are fixed with a spring sheet respectively; the other end of each spring sheet is spanned on the convex blocks and is accommodated in the notches, and is protruded to the inner groove and is embedded into the groove of the clamping disc.

Description

technical field [0001] The invention relates to a disc drive, in particular to a clamping device for cooperating with a spindle motor to clamp and rotate the disc, or break away from and withdraw the disc when the disc drive advances and retreats. Background technique [0002] The optical disc drive uses high-speed rotation of the disc to read and write data on the disc. High-speed rotation can easily cause the disc to vibrate violently. When the disc enters the optical drive, the disc must be clamped tightly so that the data on the disc can be read and written smoothly. [0003] Such as figure 1 As shown, it is the No. 505296 patent case announced by Taiwan, China. The clamping device of the background art is provided with a central hole 2 in the base 1 of the optical disk drive, and a ring 4 of the clamping device 3 is arranged around the center hole 2 , and a rotating rod 5 extends from the outer circumference of the ring 4 . The circular ring 4 utilizes the chute 6 al...

AI Technical Summary

Problems solved by technology

[0005] However, in the background art, the small ejector pin 8 of the clamping device 3 is responsible for supporting the elastic piece 10 and exerting force to make the clamping disc 14 rise and fall. The ejector pin 8 and the ring 4 must be made of metal materials to form a sufficient structure. Strength, which is not conducive to the light weight of the optical disc drive

However, the shrapnel 10 straddles the ejector pin 8, and when moving, the shrapnel 10 protrudes beyond the top surface of the ring 4. It is necessary to keep the moving height of the shrapnel 10, which is also unfavorable for the thinning of the optical disc drive.

In addition, the shrapnel 10 still needs to be embedded into the clamping disc 14 with the help of the support ring 13, so there are many parts and the structure is complicated.

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