Vibration sound structure and terminal

Abstract

The invention discloses a vibration sounding structure which comprises a casing, a first fixed side, a second fixed side, a vibration plate, a coupling pad and a piezoelectric loudspeaker. The first and second fixed sides wrap two opposite ends of the casing respectively, and comprise a first flange and a second flange, which are arranged in a bent manner, respectively, the first flange is arranged opposite to the second flange, the first and second flanges extend opposite to each other, the vibration plate is connected with the first and second flanges, a gap exists between the vibration plate and the casing, the coupling pad is arranged in the gap, and the piezoelectric loudspeaker is pasted into an area wherein the casing is connected with the coupling pad to transmit vibration energy to the vibration plate via the coupling pad and generate sound waves. According to the vibration sounding structure, the coupling pad transmits the vibration energy of the piezoelectric loudspeaker to the vibration plate, high-efficiency sound waves can be generated via vibration of the vibration plate, and the flexibility can be improved.

Description

technical field [0001] The invention relates to the technical field of electronic products, in particular to a vibration and sound generating structure and a terminal. Background technique [0002] The loudspeaker is an electric-force-acoustic transducer, which is an important component in audio equipment. Loudspeakers are widely used in people's daily life and bring a lot of convenience. In the fields of electronic products such as automobiles, radio, TV, speakers, mobile phones, MP4, computers, etc., the applications of loudspeakers can be seen almost everywhere. There are many types of loudspeakers, which can be divided into electric type (ie moving coil type), electrostatic type (ie capacitive type), electromagnetic type (ie reed type), piezoelectric type, etc. according to their energy conversion principles; Divided into woofers, midrange speakers, and tweeters, among which dynamic speakers are the most widely used. Due to its small size, thinness and lightness, the p...

AI Technical Summary

Problems solved by technology

[0010] Although the piezoelectric speaker has the above advantages, the first-order resonance frequency of the piezoelectric speaker (the frequency corresponding to a peak of the frequency response curve) is generally higher, the low-frequency characteristics are slightly worse, and the low-frequency bandwidth is narrow, that is, the bass reproduction effect is poor.

In addition, the sound pressure frequency response curve of the existing piezoelectric speakers generally has relatively severe fluctuations in the middle frequency band, resulting in high harmonic distortion, poor sound quality, and low sensitivity

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