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Voice coil motor and leaf spring thereof

A technology of leaf springs and voice coil motors, applied to electrical components, electromechanical devices, etc., can solve problems affecting the performance of voice coil motors, fatigue failure, stress concentration, etc., to reduce stress concentration, increase service life, and evenly distribute stress Effect

Inactive Publication Date: 2013-04-17
SHENZHEN WEIMENG PHOTOELECTRIC TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, during use, the connection between the inner ring and the spring wire and the connection between the outer ring and the spring wire of the existing leaf spring is usually prone to stress concentration and fatigue failure, which affects the performance of the voice coil motor

Method used

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  • Voice coil motor and leaf spring thereof

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Experimental program
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Effect test

Embodiment Construction

[0017] The voice coil motor and its leaf spring of the present invention will be further described in detail below with reference to the drawings and embodiments.

[0018] See figure 1 , the leaf spring 100 of the embodiment of the present invention includes a fixed outer ring 12 , a movable inner ring 14 and at least four connecting spring wires 16 . At least four connecting spring wires 16 are evenly distributed between the fixed outer ring 12 and the movable inner ring 14 , and one end of each connecting spring wire 16 is connected to the fixed outer ring 12 and the other end is connected to the movable inner ring 14 .

[0019] Each connecting spring wire 16 can have two or more interconnected arc segments, and the curvature between each arc segment can be equal or differ by no more than 50%, and each connecting spring wire 16 can also There is a straight line segment, and this straight line segment can be close to the fixed outer ring 12. In addition, the part of each con...

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PUM

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Abstract

The invention relates to a voice coil motor and a leaf spring thereof. The leaf spring for the voice coil motor comprises a fixed outer ring, a movable inner ring and at least four connecting spring wires, wherein the connecting spring wires are uniformly distributed between the fixed outer ring and the movable inner ring; and one section, which is opposite to the fixed outer ring, of one end of each connecting spring wire is connected with the movable inner ring. Due to the adoption of the leaf spring, stress concentration can be reduced, and the performance of the voice coil motor is improved.

Description

technical field [0001] The invention relates to a leaf spring and a voice coil motor with the leaf spring. Background technique [0002] Voice coil motors are widely used as auto-focus brakes in electronic products such as mobile phones, laptops, and tablets due to their small size, high sensitivity, fast response, good repeatability, low power consumption, and low cost. . Common voice coil motors are mainly composed of leaf springs, yokes, magnets, coils, coil formers, housings and bases. Among them, the sheet-like structure of the spring enables the voice coil motor to be packaged in millimeter-level dimensions. The outer ring of the leaf spring is connected to other fixed parts in the voice coil motor, and the inner ring of the leaf spring is connected to other movable parts in the voice coil motor. When the voice coil motor moves, the leaf spring elastically deforms. The shape spring supports and restores the movable parts. It can be seen that the leaf spring is a ke...

Claims

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Application Information

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IPC IPC(8): H02K33/18
Inventor 曾志国潘龙法张莹肖叔江林家用廖汉忠张志清符英文
Owner SHENZHEN WEIMENG PHOTOELECTRIC TECH
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