Precision positioning voice coil motor

By introducing a heat dissipation structure consisting of pre-formed slots, heat-conducting plates, and heat dissipation fins into the voice coil motor, along with an auxiliary positioning design using ball bearings, the problems of poor heat dissipation and insufficient positioning are solved, resulting in more efficient heat dissipation and motion stability.

CN224037221UActive Publication Date: 2026-03-24BEIJING HIGH CONTROL TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-04-11
Publication Date
2026-03-24

AI Technical Summary

Technical Problem

Existing voice coil motors have poor heat dissipation and lack auxiliary positioning functions, which affects motion precision and stability.

Method used

A heat dissipation structure combining prefabricated grooves inside the coil frame with heat-conducting plates and heat dissipation fins was designed, and dual heat dissipation was achieved through heat-conducting rods. At the same time, ball bearings were used to contact the inner wall of the moving housing to provide auxiliary positioning.

Benefits of technology

This improves the heat dissipation of the motor, avoids overheating, and enhances the precision and stability of the motion.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224037221U_ABST
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Abstract

The utility model discloses a precise positioning voice coil motor which comprises a movable shell, a prefabricated groove and a mounting plate, a coil framework is mounted on the inner side of the movable shell in an inserted mode, an internal assembly is mounted in the middle of the inner side of the movable shell, and a coil body is arranged in the middle of the outer side wall of the coil framework; a prefabricated groove is formed in the side wall of the coil framework, a heat conduction plate is fixedly installed on the outer side wall of the coil framework, and cooling fins are fixedly arranged on the outer side of the heat conduction plate. A mounting plate is mounted in the outer side of the coil framework, and balls are embedded in the inner side of the upper end of the mounting plate; the internal assembly comprises a magnetic steel ring, an inner magnetic pole, an outer magnetic pole and a heat conduction rod. The utility model belongs to the technical field of voice coil motors, and aims to solve the problems of poor heat dissipation effect and no good auxiliary positioning function in the prior art. The technical effects are that the overall heat dissipation effect can be improved conveniently, and a good auxiliary positioning function is achieved.
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Citation Information

Patent Citations

  • Voice coil motor mechanism

    CN211405657U