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Closed-loop motor

A closed-loop, motor technology, used in electrical components, electromechanical devices, propulsion systems, etc., can solve problems such as unfavorable end product thinning, unfavorable automated production, complex production processes, etc., to improve focusing accuracy, and ensure accuracy and reliability. The effect of high sex and sensitivity

Pending Publication Date: 2018-11-02
包头江馨微电机科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the limitation of the ball structure, the ball-type closed-loop voice coil motor has a large volume, which is not conducive to the development of end products in the direction of thinning and thinning; and in the non-photographing state, the lens will hit the motor shell and produce abnormal noise, which will affect the user's use; and The structure of the currently announced shrapnel-type closed-loop voice coil motor has a complicated production process and high production costs, which is not conducive to automated production

Method used

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Embodiment Construction

[0048] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further elucidated below in conjunction with specific embodiments.

[0049] Such as figure 1 with figure 2 As shown, a closed-loop motor includes a base 10, a movable assembly disposed on the base 10, and a closed-loop driving assembly, which is used to sense and drive the movable assembly to move on the optical axis.

[0050] The structure of the closed-loop motor of the present application and its effect are specifically described below:

[0051] Such as image 3 As shown, the base 10 includes a square support plate 11, and a movable through hole 12 that runs through the square support plate 11. The axis of the movable through hole 12 coincides with the axis of the square support plate 11, and the movable through hole 12 is close to one of the B springs 40. The side extends to form a spacer ring 13, and the ...

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Abstract

The invention relates to the technical field of VCMs, in particular to a closed-loop motor. The closed-loop motor comprises a base, a movable component arranged on the base and a closed loop drive component, wherein the closed loop drive component is used for inducing and driving movement of the movable component on an optical axis. According to the closed-loop motor, first limiting columns and second limiting columns arranged on support tables are matched with corresponding first limiting column through holes and second limiting column through holes in a B spring separately; the first limiting columns are firstly matched with the corresponding first limiting column through holes in the assembly process; and the heights and the cross section area of the first limiting columns are relatively large, so that the assembly difficulty of the first limiting columns and the corresponding first limiting column through holes is reduced, the assembly efficiency is improved, the assembly accuracyis ensured while fast assembly is achieved, and the focusing accuracy of the closed-loop motor is improved.

Description

Technical field: [0001] The present invention relates to the technical field of VCM, in particular to a closed-loop motor. Background technique: [0002] Closed-loop motor (Voice Coil Actuator / 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 closed-loop 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 closed-loop motor itself. With appropriate positioning feedback and sensing devices, the positioning accuracy can easily reach 10NM, and the acceleration can reach 300g (the actual acceleration also depends on the condition of the load). The camera module uses the shutter t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K41/035
CPCH02K41/0354
Inventor 蔡锐林幸帅超许德光
Owner 包头江馨微电机科技有限公司
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