Complete structure of vibration motor

By adopting a thickened plate welding structure that integrates C-shaped springs and mass blocks in the micro linear motor, as well as a Heilbeck magnetic circuit and buffer pad design, the problems of low assembly yield, high material cost, and poor noise in micro linear motors have been solved, achieving efficient production and optimized vibration effect.

CN224083400UActive Publication Date: 2026-04-03HEBEI RUNSI TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202520739744.9
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-04-18
Publication Date
2026-04-03
Estimated Expiration
2035-04-18

AI Technical Summary

Technical Problem

Existing micro linear motors suffer from problems such as low assembly yield, high material costs, poor noise, high failure rate of magnetic circuit component welding, damping material affecting spring life, and large space occupation of flexible circuit boards, resulting in high production difficulty and poor performance.

Method used

The machine adopts a thickened plate welding structure with C-shaped springs and mass blocks integrated, combined with Heilbeck magnetic circuit and buffer pad design, to optimize the overall structure, simplify the production process, reduce noise, improve assembly yield and vibration, and save space.

Benefits of technology

It simplifies the production process, improves the assembly yield, reduces material costs, reduces noise defects, improves vibration and magnetic field line utilization, and saves overall machine space.

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Abstract

The utility model discloses a whole structure of a vibration motor, which comprises an upper shell and a lower shell, an FPCB (flexible printed circuit board) and a coil are fixed on the lower shell, a mass block is arranged in the upper shell, a magnet is arranged on the mass block, two elastic sheets are arranged on the mass block in a central symmetry manner, and thickening plates are integrally arranged on the inner sides of the elastic sheets. The elastic sheet is welded on the periphery of the mass block through the thickening plate; a protruding plate is arranged on the upper side of the movable end of the elastic piece and abuts against the top of the inner side of the upper shell. According to the utility model, the elastic sheet is directly welded on the mass block through the integrally arranged thickened part, so that the step of welding the elastic sheet and the supporting sheet is omitted, the production process is simplified, and the problem of poor welding caused by a gap and position deviation between the elastic sheet and the supporting sheet in the welding process is avoided; the elastic piece is provided with the protruding plate which abuts against the upper shell, it is guaranteed that the gap between the inner surface of the upper shell and the upper surface of the mass block is enough, the problem of poor noise generated in the product vibration process is avoided, and the product performance yield is improved.
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