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Magnetic suspension motor

A motor and maglev technology, applied in the direction of magnetic attraction or thrust holding device, electrical components, etc., can solve the problems of shrapnel elastic fatigue, coil damage, distortion, etc., and achieve high reliability

Inactive Publication Date: 2013-09-18
SCIENBIZIP CONSULTINGSHENZHENCO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Because the coil moves up and down with the lens, the coil is sometimes damaged, causing distortion when focusing or zooming, resulting in low reliability of the voice coil motor; in addition, the elastic fatigue of the shrapnel will permanently cause distortion.

Method used

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Experimental program
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Embodiment Construction

[0013] see figure 1 , figure 2 and image 3 , the magnetic levitation motor 100 provided by the embodiment of the present invention is used to drive a lens module (not shown in the figure) to realize a focusing or zooming function, and the lens module has an optical axis.

[0014] The magnetic levitation motor 100 includes a housing 10 , a fixed unit 20 , a movable unit 30 , a shrapnel 40 and a carrier 50 .

[0015] The casing 10 is used to accommodate the fixed unit 20 , the movable unit 30 , the elastic piece 40 and the carrier 50 to prevent external interference to the above components and to have the function of preventing electromagnetic interference.

[0016] The fixing unit 20 includes a fixing frame 21 and four first magnetic field generating components 22 . The fixing frame 21 includes a hollow square bottom plate 210 , four corners of the bottom plate 210 are respectively provided with guide posts 211 of the same height in the same direction, and the extension di...

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PUM

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Abstract

A magnetic suspension motor, which is used for driving a lens module, comprises a fixation unit and a movement unit. The fixation unit comprises a fixation support and first magnetic field generation assemblies, wherein the first magnetic field generation assemblies are fixed on the fixation support and the fixation support is provided with guide pillars. The movement unit, which is movably arranged in the fixation unit, comprises a movement support and second magnetic field generation assemblies, wherein the second magnetic field generation assemblies are fixed on the movement support; the movement support, which is for accommodating the lens module, is provided with notches corresponding to the guide pillars. At least one group of a group of the first magnetic field generation assemblies and a group of the second magnetic field generation assemblies is an electromagnet which contains a coil and an iron core. The movement unit, under the action of the magnetic field produced by the first magnetic field generation assemblies and the second magnetic field generation assemblies, moves along the guide pillars towards the direction of an optical axis in the fixation unit.

Description

technical field [0001] The invention relates to a magnetic levitation motor. Background technique [0002] The main principle of the voice coil motor (VCM) is to control the stretching position of the shrapnel by changing the current of the inner coil of the voice coil motor in the permanent magnetic field, so that the coil receives different magnetic force, so as to control the stretching position of the shrapnel, thereby driving the lens Move up and down to achieve the movement function of the lens. [0003] Since the coil moves up and down with the lens, the coil is sometimes damaged, causing distortion during focusing or zooming, resulting in low reliability of the voice coil motor; in addition, the elastic fatigue of the shrapnel will permanently cause distortion. Contents of the invention [0004] In view of this, it is necessary to provide a magnetic levitation motor with high reliability. [0005] A magnetic levitation motor used to drive a lens module, the magne...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02N15/00
Inventor 吴尚峰
Owner SCIENBIZIP CONSULTINGSHENZHENCO