Loudspeaker box

Abstract

The invention provides a loudspeaker box. The loudspeaker box comprises a shell and a loudspeaker unit which is contained in a shell. The loudspeaker unit comprises a diaphragm for vibration to produce sound. The diaphragm and the shell are spaced to form a front sound cavity. The loudspeaker box also comprises a sound outlet channel by which the front sound cavity and the outside world are communicated. The front sound cavity and the sound outlet channel form a front cavity of the loudspeaker box. The loudspeaker box also comprises a through hole formed corresponding to the front cavity area, a plurality of mounting holes arranged around the periphery of the through hole, and an elastic cover plate which covers the through hole. A plurality of columnar connecting elements stretch from the elastic cover plate and face the inner surface of the front cavity. The mounting holes and the columnar connecting elements are in one-to-one correspondence and matching connection. The Young modulus or strength of the elastic cover plate is smaller than the Young modulus or strength of the shell. According to the loudspeaker box provided by the invention, the front cavity resonance can be weakened, a resonance peak can be reduced, and the distortion is improved.

Description

【Technical Field】 [0001] The invention relates to the technical field of electro-acoustic conversion, in particular to a speaker box. 【Background technique】 [0002] With the advent of the mobile Internet era, the number of smart mobile devices continues to rise. Among many mobile devices, mobile phones are undoubtedly the most common and most portable mobile terminal devices. Currently, the functions of mobile phones are extremely diverse, one of which is high-quality music functions. Therefore, speaker boxes for playing sound are widely used in current smart mobile devices. [0003] The speaker box includes a housing and a speaker unit contained in the housing. The speaker unit includes a diaphragm for vibrating and sounding. The diaphragm and the housing are spaced apart to form a front sound cavity, and the front sound cavity The front cavity is formed in communication with the sound guide channel. In the related art, the shell is made of hard plastic and metal materials, an...

AI Technical Summary

Problems solved by technology

The damping of the rigid wall is small, and the vibration amplitude is small, the radiation energy is limited, and the energy of the cavity cannot be effectively transmitted, so the energy of certain specified frequencies cannot be absorbed

The front cavity resonance is generated when the speaker box emits sound. Due to the resonance effect, a resonance peak is formed in the middle and high frequencies, and at the same time, distortion peaks such as 2nd and 3rd times will be generated in the distortion, which will affect the sense of hearing.

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