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Superminiature voice coil motor

A voice coil motor, ultra-small technology, applied in the direction of electrical components, electromechanical devices, installation, etc., can solve problems such as troublesome operation, high defect rate, and difficult processing of fixtures, and achieve the effect of protecting against damage and reducing the overall size

Inactive Publication Date: 2009-09-09
惠州龙德科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The special fixture is difficult to process and troublesome to operate, which will increase the difficulty and cost of installing the lens for module manufacturers, and the defect rate will be high

Method used

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Examples

Experimental program
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Effect test

Embodiment Construction

[0025] The specific embodiments of the present invention will be described in detail below based on the drawings:

[0026] image 3 This is an exploded schematic diagram of the structure of the voice coil motor of the present invention. The voice coil motor includes a front bracket 10, a rear bracket 20, and a metal shell 30. The metal shell 30 is rectangular and has first magnet groups 40 on the four corners of its inner surface. And the second magnet group 45. These two groups of permanent magnets are arranged on the inner surface of the metal shell according to the upper and lower structure, and each group is composed of four sheet-shaped magnets; it also includes an internal thread that can be screwed into the motion output (such as a lens, etc. ) The moving carrier 50. The first toroidal coil 60 and the second toroidal coil 65 are fixed on the outer surface of the moving carrier 50. The two groups of toroidal coils correspond to the first magnet group 40 and the second magne...

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Abstract

The invention relates to a superminiature voice coil motor comprising a front support, a rear support and a metal shell arranged between the front support and the rear support, wherein the metal shell is internally provided with a motion carrying seat capable of moving along the axes of the shell, the motion carrying seat is supported in the metal shell by leaning upon a front spring plate and a rear spring plate which are in flat shapes, the upper layer and the lower layer of the inner surface of the metal shell are respectively fixed with a first magnet set and a second magnet set, and magnets in the first magnet set and the second magnet set charge magnetism towards the radial direction of the metal shell; the outer surface of the motion carrying seat corresponds to the first magnet and the second magnet set and is fixed with a first annular coil and a second annular coil on the first layer and the second layer; after being electrified to generate polarity, the first annular coil and the second annular coil drive the motion carrying seat to move along the axes of the shell under the action of the magnetic force of the first magnet set and the second magnet set. The invention can reduce the integral size of the voice coil motor to the utmost extent, thereby realizing the subminiaturization of the voice coil motor.

Description

Technical field [0001] The invention belongs to the field of electronic equipment, and particularly relates to an ultra-small voice coil motor used in an auto-focus camera module of portable electronic equipment such as mobile phones and notebooks. Background technique [0002] Voice Coil Motor (VCM) is a special linear displacement drive motor. It has the advantages of simple structure, small size, low energy consumption, no noise, high acceleration and fast response speed, accurate displacement and low price. It is very suitable as a short-distance linear displacement power unit in portable electronic products. Currently, auto-focus camera modules used in mobile phones and notebook computers generally use voice coil motors as the power unit for displacement of their optical devices. [0003] Existing voice coil motors such as figure 1 , Including a front bracket 10, a rear bracket 20, and a metal shell 30. The four peripheries of the metal shell 30 are respectively provided wi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K33/18G02B7/09
Inventor 臧庆龙张关泳涂金汉
Owner 惠州龙德科技股份有限公司
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