A speaker module

Abstract

The invention discloses a loudspeaker module, which comprises a module casing and a speaker unit accommodated in the module casing. The loudspeaker unit divides the module inner cavity surrounded by the module casing into two cavities, a front acoustic cavity and a rear acoustic cavity. The inner cavity of the module is provided with a partition for separating the front acoustic cavity from the rear acoustic cavity. On the partition, there is an acoustically sealed pressure relief channel that connects the front acoustic cavity and the rear acoustic cavity. The pressure relief channel includes openings on the partition On the through hole, a boss is provided on the partition at the position of the through hole, and a through hollow hole is opened on the surface of the boss facing the through hole, and the peripheral edge of the hollow hole is located outside the peripheral edge of the through hole. There is a certain distance between the two peripheries; a pressure relief groove is opened on the surface of the boss, the beginning of which is connected to the hollow hole, and the end extends to the end of the boss. In the loudspeaker module of the present invention, the pressure relief device is easy to be temporarily sealed, which facilitates the airtightness test of the front acoustic cavity and improves the test efficiency.

Description

technical field [0001] The invention relates to the technical field of electroacoustic products, in particular to a loudspeaker module. Background technique [0002] The loudspeaker module 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 loudspeaker modules generally include a module shell and a speaker unit, the module housing forms a module cavity for containing the speaker unit, and the speaker unit separates the module cavity into Anterior and posterior vocal chambers. [0003] In order to achieve a balance between the air pressure in the rear acoustic cavity and the outside air pressure, the pressure relief device is an essential part of the speaker module. In the existing speaker modules, the pressure relief device is often arranged between the front acoustic cavity and the rear acoustic cavity, so that the speaker mo...

AI Technical Summary

Problems solved by technology

But this structure of existing loudspeaker module, pressure relief groove 72 extends to the end side wall of boss all the time, and pressure relief groove 72 has opening on the side wall of boss 8, because test frock can only cover from above If the through hole 71 and the pressure relief groove 72 cannot be sealed, the opening of the pressure relief groove 72 on the side wall of the boss 8 cannot be sealed, so it is difficult to temporarily seal the pressure relief passage as a whole.

Images