Plate clamping device

Abstract

The invention discloses a plate clamping device. A transmission rod moves away from a center hole and is in linkage with a first linkage rod and a second linkage lever synchronously, accordingly, a first slider drives a first pivot connecting rod to move towards the center hole, a second slider drives a second pivot connecting rod to move towards the center hole, a carrying seat is driven to carry a plate clamping disc to contact with a spindle motor, and a pressing spring plate which is fixed to the peripheral edge of the center hole is pressed on the plate clamping disc, so that a plate is stably clamped.

Description

technical field [0001] The invention relates to an optical disc drive, in particular to a clamping device for cooperating with a spindle motor to clamp or release the disc when the disc drive advances and retreats. Background technique [0002] A jukebox spins a platter at high speed to read and write data on the platter. High-speed rotation can easily cause the platter to vibrate violently, making it difficult to read and write data on the platter, and even cause the platter to fall off, endangering the safety of consumers. Therefore, the optical disc drive must tightly clamp the rotating platter to read and write data safely and smoothly. [0003] Such as figure 1 As shown, it is the disc clamping device of the background technology of the U.S. Publication No. 6577580 patent case. The optical disc player 1 of the background technology has a central hole 3 on the seat plate 2, and a disc clamping device 4 is set on the periphery of the central hole 3. The disc clamp Trans...

AI Technical Summary

Problems solved by technology

However, the too long and curved shrapnel 13 has insufficient elasticity, and the ejector pin 11 with a small height due to the limited installation space often cannot provide enough jacking force to allow the clamping disc 14 to break away from the contact with the spindle motor below. Magnetic attraction, so that the disc 1 is not fully ejected and released, and damages the disc drive and the disc

In addition, the high-speed rotating disk is prone to violent vibrations, so that the magnetic attraction between the clamping disk and the spindle motor below cannot provide reliable clamping of the disk. Therefore, there is another disk clamping device in the background technology, which compresses the shrapnel Pressing the clamping disc will increase the burden on the ejector pin to push up the shrapnel, which will limit the pressing force of the shrapnel and increase the instability of the release of the ejector

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