Loudspeaker

Abstract

A loudspeaker comprises a shell, vibrating diaphragms arranged in the shell and a driver for driving the vibrating diaphragms to move, wherein the shell is provided with an outlet face, and other faces are closed; the number of the vibrating diaphragms is at least two, the vibrating diaphragms are arranged at intervals in the direction parallel to the outlet face of the shell, a deformation space is formed between every two adjacent vibrating diaphragms, and the deformation spaces are communicated with an outlet of the outlet face of the shell. The driver is arranged between the two adjacent vibrating diaphragms, the driver stretches out and draws back to drive the two adjacent vibrating diaphragms to move relatively in the direction parallel to the outlet face of the shell, and when the driver is shortened, the driver drives the adjacent vibrating diaphragms to be close to each other, so the deformation space is reduced, and air is extruded towards the outlet; when the driver extends, the driver drives the adjacent vibrating diaphragm to be away from each other, so the deformation space is increased, air is sucked in from the outlet, the vibrating diaphragm of the loudspeaker moves parallel to the outlet surface in the shell, and the sensitivity is higher.

Description

Technical field [0001] Technical Field The present invention relates to acoustic devices, particularly to a loudspeaker. Background technique [0002] A speaker, a speaker is also called, is a common electro-acoustic transducer device that converts electrical signals to acoustic signals and vibrations in the form of acoustic signals transmitted to the outside world, to achieve sound transmission. With the development of portable electronic products, the speaker also diminishing trend in recent years by a semiconductor process technology to produce micro-electromechanical systems (MEMS, Micro-Electro-Mechanical System) speaker, breaking the size limitations of conventional machining, having small size, low power consumption, good consistency, etc., is the focus of future development direction of the speaker field. [0003] MEMS conventional speaker structure, and the driving source diaphragm which is typically formed separately and then integrally assembled, can not make full use ...

AI Technical Summary

Problems solved by technology

[0003] In the existing MEMS loudspeaker structure, the vibrating diaphragm and the driving source are usually molded separately and then assembled into one body, which cannot make full use of the advantages of the semiconductor manufacturing process, and the production cost is high; The size limitation of the semiconductor process in the height direction makes the movement space of the vibrating diaphragm insufficient and the sensitivity is low

Images