Autorotation preventing VCM structure

An anti-rotation and anti-rotation block technology is applied in the direction of the casing/cover/support, electrical components, electromechanical devices, etc. It can solve problems such as focusing failure, irreversible deformation of shrapnel, impact of voice coil motor, etc., to prevent carrier rotation, The internal structure is compact and the effect of preventing the deformation of the shrapnel

CN107482821AInactive Publication Date: 2017-12-15SUZHOU FORCECON ELECTRIC
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2017-12-15
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses an autorotation preventing VCM structure, which his characterized in that the top of an outer shell is provided with downward bending inner claws at the opening, and the inner all of the outer shell is vertically provided with check blocks; a carrier is set to be a cylindrical structure, the lower outer side wall of the carrier is provided with a circle of first boss, a plurality of second bosses are uniformly arranged on the outer side wall between the first boss and the upper opening of the carrier, and the side wall of each second boss is provided with a coil retaining wall; the first boss is provided with a plurality of rotation preventing blocks, and both sides of the rotation preventing block are matched with the check blocks on the inner wall of the outer shell; and the outer shell is clamped on a base body. The autorotation preventing VCM structure is compact in internal structure, the carrier is good in fixation effect, and elastic piece deformation brought about by autorotation is effectively prevented.
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Description

technical field

[0001] The invention relates to an anti-rotation VCM structure, which belongs to the technical field of voice coil motors. Background technique

[0002] A voice coil motor is a device that converts electrical energy into mechanical energy, and realizes linear and limited swing angle motion. A device that uses the interaction between the magnetic field from the permanent magnet steel and the magnetic poles in the magnetic field generated by the energized coil conductor to produce regular motion. Because the voice coil motor is a non-commutating power device, its positioning accuracy depends entirely on the feedback and control system, and has nothing to do with the voice coil motor itself. With appropriate positioning feedback and sensing devices, the positioning accuracy can easily reach 10NM, and the acceleration can reach 300g.

[0003] At present, because the carrier with the lens installed is moved and connected in the voice coil motor, when the product...

Examples

Embodiment Construction

[0015] The present invention will be further described below in conjunction with the accompanying drawings.

[0016] Such as figure 1 As shown, an anti-rotation VCM structure includes: an outer shell 1, a base body 2, and a carrier 3. The top opening of the outer shell 1 is provided with a downwardly bent inner claw 11, and the inner wall of the outer shell 1 A stopper 12 is vertically arranged on the top; the carrier 3 is arranged in a cylindrical structure, and the outer wall below the carrier 3 is provided with a first boss 31 for a week, and the outer wall from the first boss 31 to the opening above the carrier 3 is evenly provided with A plurality of second bosses 32, the top of the second boss 32 is flush with the upper opening of the carrier 3, the bottom of the second boss 32 is in contact with the top surface of the first boss 31, and the side wall of the second boss 32 A coil retaining wall 33 is arranged on it, the thickness of the second boss 32 matches the thickn...