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Disc drive having self-adjusting turntable

A disk drive, rotary table technology, used in instruments, recording of information on disks, magnetic recording, etc., can solve problems such as disk levelness cannot be accurately maintained, laser beam cannot be projected, jitter and deviation, etc.

Inactive Publication Date: 2003-07-09
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In the above-mentioned existing disk drive, if the turntable is tilted, that is, the turntable is not coaxial with the rotation axis of the spindle motor, the levelness of the disk cannot be accurately maintained.
As a result, the disk jitters and deviates during rotation, and the laser beam cannot be projected to the desired disk recording pits

Method used

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  • Disc drive having self-adjusting turntable
  • Disc drive having self-adjusting turntable
  • Disc drive having self-adjusting turntable

Examples

Experimental program
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Embodiment Construction

[0021] The following will refer to image 3 and Figure 4 A disk drive having a self-compensating turntable formed in accordance with a preferred embodiment of the present invention is described in detail.

[0022] A spindle motor 40 for rotating the disk is mounted on the pedestal 10 . A bracket (not shown) is attached to the periphery of the spindle motor 40 .

[0023] A turntable 50 includes a lower drive assembly 51 and an upper positioning assembly 52 capable of floating relative to the drive assembly 51 . The driving assembly 51 is engaged with the upper portion of the rotating shaft 42 of the spindle motor 40 and is driven by it. An annular boss 42 a (or a plurality of bosses spaced apart from each other) extends outward from the peripheral surface of the rotary shaft 42 . Upwardly opening grooves 50a and upwardly protruding ridges 50b are formed in a staggered relationship on the upper surface of the driving assembly 51, and they curve downward toward the inner low...

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PUM

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Abstract

A disc drive includes a motor and a turn table mounted on a shaft of the motor to be driven thereby. The turn table includes a lower drive member driven by the motor, and a positioning member mounted on the drive member. The positioning member includes a top surface on which the disc is mounted. The positioning member and drive member form a concave / convex interface, enabling the positioning member to float relative to the drive member to a position wherein the top surface is oriented horizontally, even if the drive member becomes tilted relative to the shaft.

Description

technical field [0001] The present invention relates to a disc drive having a motor driven turntable. Background technique [0002] Generally, a disc is used as a recording medium for recording information on and reproducing information from spiral or concentric tracks. The information recorded on the disk is reproduced by a pickup feeding device, which includes a motor and a gear train driven to rotate by the motor, and a linear movement in a radial direction of the disk driven by the pickup feeding device. optical pick-up device. [0003] While the optical pickup is moving, the disk is rotated by a disk drive. refer to figure 1 and 2 , the existing disk drive includes a deck (deck base) 10; a spindle motor 12 mounted on the deck with a rotating shaft that engages with the disk D; a table 14; and a clamp (not shown) engaged with a non-magnetic portion of the disk D placed on the upper surface of the rotary table 14 to prevent the disk D from being deviated. [0004] A...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G11B17/022G11B17/028G11B19/20
CPCG11B19/2009G11B17/0282G11B17/022
Inventor 延哲诚
Owner SAMSUNG ELECTRONICS CO LTD