A speaker module

Abstract

The invention discloses a loudspeaker module and relates to the technical field of electroacoustic products. The loudspeaker module comprises a module shell, a loudspeaker body is contained in the module shell, the module shell is provided with a sound leaking hole used for adjusting pressure in the module, a rear sound cavity is formed between the loudspeaker body and the shell, the sound leaking hole is formed in the position, corresponding to the rear sound cavity, in the shell, and the inner side and the outer side of the sound leaking hole are symmetrically provided with two piece of damping mesh cloth respectively. By means of the structure, the problem that inner pressure and outer pressure in the loudspeaker are not balanced because the air permeability amounts of the sound leaking hole are different in the vibrating process can be reduced, and the problem that amplitude is asymmetric due to unbalanced pressure is effectively solved.

Description

technical field [0001] The invention relates to the technical field of electro-acoustic products, in particular to a loudspeaker module that maintains the balance of air pressure inside and outside the module and has good symmetry in the vibration amplitude of the diaphragm. Background technique [0002] The loudspeaker module is an important acoustic component of portable electronic equipment. It includes a housing, in which a speaker unit is accommodated, and a rear acoustic cavity is formed between the speaker unit and the housing. The rear acoustic cavity is the space behind the diaphragm of the speaker unit. In order to prolong the service life of the speaker module and improve the acoustic performance of the speaker module, technicians usually set a sound leak hole with a relatively large sound resistance on the module shell. The air pressure in the inner cavity of the group also plays a role in heat dissipation. The sound leakage structure has a direct impact on the ...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, there are generally two conventional designs for the sound leakage hole in the speaker module. One is to paste a damping mesh on the sound leakage hole with an aperture larger than 0.3mm, and the mesh is pasted on the inside of the speaker cavity or It is the outer side, but when there is airflow impact, the elastic deformation of the damping mesh is attached to or away from the sound leakage hole, resulting in a different ventilation area; the other design is that the speaker is equipped with a sound leakage hole with a diameter of no more than 0.2mm, but it is limited by the molding technology. Limitation, holes smaller than 0.2mm are not easy to form, and the cost of laser hole making is high

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