Elastic sheet for voice coil motor

A voice coil motor and shrapnel technology, applied in the direction of springs, electrical components, electromechanical devices, etc., can solve the problems of affecting the focusing effect and the poor quality of high-pixel mobile phones, and achieve the effect of ensuring the focusing effect.

Active Publication Date: 2013-02-27
辽宁中蓝光电科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, because the elastic wire described in this patent adopts a simple circuitous structure, the elastic wire structure can only produce a small centripetal tension during the motor movement, so that the angle formed by the rotor axis between dynamic and static conditions is relatively large , generally at an offset angle of more than 13 points (that is, more than 0.21°), which further affects the focusing effect, resulting in poor photo quality for high-pixel mobile phones

Method used

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  • Elastic sheet for voice coil motor
  • Elastic sheet for voice coil motor
  • Elastic sheet for voice coil motor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Such as Figure 4-5 As shown, the elastic sheet for a voice coil motor described in this embodiment includes a first elastic sheet 1 and a second elastic sheet 21. The first elastic piece 1 includes a first outer frame 2, a first inner frame 3, and a first elastic wire 4 for connecting the first outer frame 2 and the first inner frame 3; the second elastic piece 21 includes a second outer frame 22, a first Two inner frames 23 and a second elastic wire 24 for connecting the second outer frame 22 and the second inner frame 23.

[0049] Among them, there are four groups of the first elastic yarn 4 and the second elastic yarn 24, which are symmetrically and evenly distributed between the first outer frame 2 and the first inner frame 3, and between the second outer frame 22 and the second inner frame 23. , By arranging the four groups of elastic yarns symmetrically and evenly between the corresponding outer frame and the inner frame, and the four groups of elastic yarns have t...

Embodiment 2

[0057] The difference between the second embodiment and the first embodiment is only the structure of the first elastic yarn. The first elastic yarn includes eight curved sections and a straight section, which are the first arc section and the second arc section. , The third arc part, the fourth arc part, the fifth arc part, the sixth arc part, the seventh arc part, the eighth arc part, the first straight part, and the first arc part, The second arc-shaped part, the third arc-shaped part, and the fourth arc-shaped part are sequentially coupled through arc tangent to become the first S-shaped elastic wire part, the fifth arc-shaped part, the sixth arc-shaped part, and the seventh arc-shaped part. Part and the eighth arc part are sequentially coupled through arc tangent to become the second S-shaped elastic wire part, the first inner frame, the first S-shaped elastic wire part, the first straight part, the second S-shaped elastic wire part , The first outer frame is connected in ...

Embodiment 3

[0059] The third embodiment is different from the above two embodiments only in the structure of the second elastic yarn. The second elastic yarn includes eight curved sections and two straight sections, which are the first arc section and the second arc section. Shaped portion, third curved portion, fourth curved portion, fifth curved portion, sixth curved portion, seventh curved portion, eighth curved portion, first straight portion, second straight portion, And the first arc-shaped part, the second arc-shaped part, the third arc-shaped part, and the fourth arc-shaped part are sequentially coupled through arc tangent to become the third S-shaped elastic wire part, the fifth arc-shaped part and the sixth arc The shape part, the seventh arc part, and the eighth arc part are sequentially coupled through the arc tangent to become the fourth S-shaped elastic wire part, the second inner frame, the third S-shaped elastic wire part, the first straight part, The second straight portio...

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Abstract

The invention discloses an elastic sheet for a voice coil motor. The elastic sheet comprises a first elastic sheet and a second elastic sheet, the first elastic sheet comprises a first outer frame, a first inner frame and first elastic wires, the second elastic sheet comprises a second outer frame, a second inner frame and second elastic wires, the first elastic wires and the second elastic wires respectively comprise at least six bent arc portions and two straight line portions, the straight line portions and the arc portions are tangent and coupled by means of straight lines and arc shapes, the first elastic wires are in arc transition connection with the first outer frame and the first inner frame, the second elastic wires are in arc transition connection with the second outer frame and the second inner frame, and four groups of the first elastic wires and four groups of the second elastic wires are symmetrically distributed between the outer frames and the inner frames. When the elastic sheet is applied to the voice coil motor, during the operating process of the motor, an average value of an angle formed by dynamic and static axes of a rotor coil holder can be controlled within 0.12 degree, and a lens is fixed on the rotor coil holder so that an angle formed by dynamic and static optical axes of the lens can be minimized during the focusing process of the lens.

Description

Technical field [0001] The present invention relates to the technical field of voice coil motors, and in particular to a shrapnel used for automatic focusing voice coil motors of cameras. Background technique [0002] Because the Voice Coil Motor (VCM) has the advantages of simple structure, small size, low energy consumption, no noise, high acceleration, fast response speed, accurate displacement and low price, so for the current camera automatic focusing device, the sound Automatic focusing with a ring motor structure is still the most cost-effective way. By fixing the optical lens on the voice coil motor rotor bobbin, the rotor acts as the power unit for lens movement, and connects the voice coil motor rotor bobbin and the stator through the shrapnel pair. When the motor is energized, the rotor bobbin will be along the optical axis of the lens Perform linear motion to realize the automatic focusing function. The function of the shrapnel pair is to accelerate the change speed ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K33/00F16F3/00
Inventor 吴发权
Owner 辽宁中蓝光电科技有限公司
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