Vibrating diaphragm and micro acoustic generator provided with same

Abstract

The invention discloses a vibrating diaphragm and a micro acoustic generator provided with the same, and relates to the technical field of electro-acoustic products. The vibrating diaphragm comprises a center part, a folded ring part and a fixed part, which are connected in sequence from inside to outside, wherein patterns are distributed on the folded ring part; in an orthographic projection plane of the vibrating diaphragm, the patterns comprise at least one first pattern arranged on the inner side of the folded ring close to the center part, and at least one second pattern arranged on the outer side of the folded ring close to the fixed part; and the first pattern and the second pattern are distributed radially and are crescent patterns. The vibrating diaphragm and the vibrating diaphragm arranged on the micro acoustic generator, disclosed by the invention, are smooth in vibration, high in compliance, difficult in generation of wrinkles, and strong in fatigue resistance, so that the micro acoustic generator is high in sensitivity, small in distortion, and large in reliability allowance.

Description

technical field [0001] The invention relates to the technical field of electroacoustic products, in particular to a vibrating membrane and a miniature sound generator provided with the vibrating membrane. Background technique [0002] Miniature sound generator is an important acoustic component in portable electronic equipment, which is used to convert sound wave electric signal into sound signal, and is an energy conversion device. The micro sounder usually includes a vibration system and a magnetic circuit system. The vibration system includes a diaphragm and a voice coil combined together. The diaphragm includes a central part, a ring part and a fixed part that are sequentially combined from the inside to the outside. Important components play a vital role in the sound reproduction performance of the micro-sounder, which determines the conversion quality of the micro-sounder from electrical energy to sound energy. [0003] The pattern of the surround portion of the exist...

AI Technical Summary

Problems solved by technology

[0004] 1. When the diaphragm vibrates at a large displacement, it will vibrate, the vibration is not stable, and noise is easy to appear;

[0005] 2. The compliance of the diaphragm is low, resulting in low sensitivity and poor acoustic performance of the miniature sound generator;

[0006] 3. Wrinkles tend to appear at the four corners of the diaphragm when it vibrates, resulting in higher harmonic distortion. At the same time, it will also make the ring part of the diaphragm fatigue, making it difficult to pass the reliability test.

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