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Voice coil motor

A technology of voice coil motors and bearing seats, which is applied in installation, optics, instruments, etc., can solve the problems of increasing damaged shrapnel and increasing the production cost of voice coil motors, and achieve the effect of reducing sprains and reducing costs

Inactive Publication Date: 2013-08-21
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, when the lens barrel is screwed into the movable barrel of the traditional voice coil motor, the movable barrel is likely to rotate, which in turn will drive the shrapnel to rotate, thereby increasing the possibility of damaging the shrapnel and increasing the production cost of the voice coil motor

Method used

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Embodiment Construction

[0012] Please also refer to figure 1 , figure 2 and image 3 , which is the voice coil motor 10 provided by the embodiment of the present invention. The voice coil motor 10 includes: a casing 20, a fixed assembly 30 with two ends open, a movable assembly 40 movably accommodated in the fixed assembly 30, and two shrapnels respectively located at the two ends of the fixed assembly 30. 50a and 50b and the bearing seat 60 fixedly connected with the fixing assembly 30 as a whole.

[0013] The housing 20 is used to eliminate external electromagnetic interference to the voice coil motor 10 and prevent the electromagnetic interference of the voice coil motor 10 from affecting the operation of its external electronic components. The housing 20 can be made of magnetic shielding materials such as nickel-iron alloy, conductive plastic, surface conductive material, and conductive glass. The housing 20 has a top plate 22 , two first side plates 24 disposed on opposite sides of the top ...

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PUM

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Abstract

The invention relates to a voice coil motor. The voice coil motor comprises a movable accommodating cylinder of which the two ends are provided with openings, and a bearing seat, wherein the movable accommodating cylinder can move relatively to the bearing seat; the end face of the movable accommodating cylinder close to the bearing seat is provided with at least two prepressing units; the bearing seat is provided with a surface close to the movable accommodating cylinder and at least two stop units arranged on the surface; and the stop units are matched with the prepressing units to prevent the movable accommodating cylinder from rotating.

Description

technical field [0001] The invention relates to a voice coil motor, in particular to a voice coil motor with low cost. Background technique [0002] Voice coil motors have the advantages of small size, low power consumption and low price, and are suitable as actuators in electronic products (such as digital cameras, mobile phones, digital video cameras, etc.) (see Design of a voice coil motor used in the focusing system of a digital video camera, Magnetics, IEEE Transactions on Volume41, Issue10, Oct.2005Page(s):3979–3981). [0003] However, when the lens barrel is screwed into the movable barrel of the conventional voice coil motor, the movable barrel is likely to rotate, which in turn drives the shrapnel to rotate, thereby increasing the possibility of damaging the shrapnel and increasing the production cost of the voice coil motor. Contents of the invention [0004] In view of this, it is necessary to provide a voice coil motor that can prevent the movable barrel from ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B7/02H02K33/00
Inventor 周代栩黄友谦
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD