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Voice coil motor structure

A technology of voice coil motor and structure, applied in the direction of driving/moving recording heads, electrical components, electromechanical devices, etc., to achieve the effect of improving assembly accuracy

Inactive Publication Date: 2006-05-17
SUNONWEALTH ELECTRIC MACHINE IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is unavoidable to use precision jigs (not shown) to accurately paste the magnetic block 12 at the center of the bottom of the chamber 11, or to coaxially bond the magnetic block 12 and the permanent magnet 13. There is a problem with combining tolerances

Method used

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  • Voice coil motor structure
  • Voice coil motor structure
  • Voice coil motor structure

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Experimental program
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Embodiment Construction

[0026] refer to figure 2 As shown, the structure of the voice coil motor according to the first embodiment of the present invention includes a base 2 , a magnetic induction unit 3 and a coil base 4 . The voice coil motor can be optionally used in various storage devices, such as a read head (not shown) used in a precision micro-distance mobile hard disk drive or an optical disc drive.

[0027] refer to figure 2 As shown, the base 2 of the first embodiment of the present invention is generally in the shape of a "convex" cylindrical cylinder. The base 2 is provided with a chamber 20 , a positioning shaft hole 21 and several assembly holes 22 . The chamber 20 is a cylinder. The positioning shaft hole 21 is defined at the center of the bottom of the chamber 20 . The assembling hole 22 is used for assembling the base 2 in a proper position, such as assembling in a suitable storage device (not shown).

[0028] Refer again figure 2 As shown, the magnetically sensitive group ...

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Abstract

A structure of voice coil motor consists of base with a chamber and a positioning axis hole at center of chamber base, magnetic induction set with its bottom substance corresponding to positioning axis hole and fixing on it quickly for being, set on central position of chamber, coil seat being sheathed by a coil and being set in chamber as well as being sheathed above magnetic induction set for generating magnetic induction by connecting current through with coil so as to generate movement of coil seat to magnetic induction set relatively.

Description

technical field [0001] The present invention relates to a voice coil motor structure, in particular to a positioning shaft hole formed in a base for fast and accurate combination of a magnetic induction group voice coil motor structure. Background technique [0002] refer to figure 1 As shown, a conventional voice coil motor (VCM) structure includes a base 10 , a chamber 11 , a magnetic block 12 , a permanent magnet 13 , a coil seat 14 and a coil 15 . The base 10 is recessed to form the chamber 11 . The magnetic block 12 and the permanent magnet 13 are coaxially fixed in the chamber 11 . The coil base 14 is used for winding the coil 15 , and the coil base 14 is placed in the chamber 11 without contact, so that the pair of permanent magnets 13 are located in the inner space of the coil 15 . [0003] When the coil 15 conducts a current, the coil 15 will generate magnetic induction with the permanent magnet 13 , thus forming a driving force proportional to the current. The ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G11B21/02H02K33/18
Inventor 洪银树陈国祥
Owner SUNONWEALTH ELECTRIC MACHINE IND