Vibration assembly and electret microphone

By designing inner edge notches and insulating areas on the vibration ring and diaphragm, combined with improving the back plate and pole ring structure, the problems of low sensitivity and poor sound quality caused by parasitic capacitance in traditional electret microphones are solved, and the sensitivity and sound quality of the microphone are improved.

CN223379304UActive Publication Date: 2025-09-23SHANDONG GETTOP ACOUSTIC CO LTD
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Patent Information

Application Number
CN202422774479.6
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-11-14
Publication Date
2025-09-23
Estimated Expiration
2034-11-14

AI Technical Summary

Technical Problem

Traditional electret microphones have a large amount of parasitic capacitance, which leads to low sensitivity and poor sound quality.

Method used

By designing inner edge notches and insulating areas on the vibration ring and diaphragm, the parasitic capacitance between the back plate and the diaphragm is reduced. Combined with improving the structure of the back plate and the pole ring, the component design is optimized to reduce parasitic capacitance.

Benefits of technology

It effectively improves the sensitivity and sound quality of the microphone and enhances the user experience.

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Abstract

The utility model provides a vibration assembly and an electret microphone. The vibration assembly comprises a vibration ring, a vibrating diaphragm, a gasket and a back pole plate which are sequentially arranged in an overlapped mode. The vibrating diaphragm comprises an elastic diaphragm and a conductive layer arranged on the elastic diaphragm. The vibrating ring comprises a conductive part, the conductive part comprises inner edge notches which are arranged at intervals in the circumferential direction of the inner edge of the vibrating ring, the vibrating diaphragm corresponding to the inner edge notches forms an insulating area, and the vibrating diaphragm in the insulating area is insulated from the vibrating diaphragm in a non-insulating area. According to the vibration assembly and the electret microphone provided by the invention, the parasitic capacitance can be effectively reduced, the sensitivity is improved, and the tone quality is improved.
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