micro sounder

Abstract

The invention discloses a miniature acoustic generator and relates to the technical field of an electroacoustic product. The miniature acoustic generator comprises a shell and a front cover which are combined together. A vibration system and a magnetic circuit system are contained in a space enclosed by the shell and the front cover. The vibration system comprises vibration diaphragm of which edge part is fixed between the front cover and the shell. The front cover is equipped with a side wall. The edge part comprises a fixing part located at an inner side and a turnup which is located at the outer side of the fixing part and bends upwards. The turnup is fixed on the outer surface of the side wall. According to the miniature acoustic generator, the technical problem that in the prior art, the waterproof performance of the miniature acoustic generator is poor is solved. The miniature acoustic generator is good in waterproof performance, high in waterproof stability and reliability, good in acoustic performance and long in service life.

Description

technical field [0001] The invention relates to the technical field of electroacoustic products, in particular to a miniature sound generator. Background technique [0002] Miniature sound generator is an important acoustic component of portable electronic equipment, which is used to complete the conversion between electrical signals and sound signals, and is an energy conversion device. Existing miniature sound generators include shells and front covers that are combined together. A vibration system and a magnetic circuit system are accommodated in the space enclosed by the shell and the front cover. The edge of the vibration system is fixed between the shell and the front cover, that is, the vibration The edge of the system's diaphragm is fixed between the housing and the front cover. [0003] The micro sounder is installed in the portable electronic device. When the electronic device falls into the water or touches the water in other forms, the water will enter from the ...

AI Technical Summary

Problems solved by technology

[0004] The current waterproof miniature sounder mainly depends on the sealing performance between the diaphragm and the front cover, which requires two points: one is that the bonding glue will not be infiltrated by water and fail; the other is that the gap between the diaphragm and the front cover The coated tape between them is flat and has a certain width. The wider the coated tape, the better the waterproof effect, but the width of the coated tape will affect the effective vibration area of ​​the diaphragm. The wider the coated tape is, the smaller the effective vibration area of ​​the diaphragm will be. Causes a loss of sensitivity, affecting the acoustic performance of the microsounder

Moreover, this waterproof mode is very dependent on the quality of the glue. Once the glue fails, the waterproof function will be destroyed, and the micro sounder will no longer have the waterproof function

Images