Hollow sound insulation automobile wheel cover structure with acoustic black hole inner cavity

Abstract

The invention discloses a hollow sound insulation automobile wheel cover structure with an acoustic black hole inner cavity, the automobile wheel cover structure comprises: a cover body, wherein the acoustic black hole inner cavity is formed in the cover body, the acoustic black hole inner cavity comprises a first cavity and a second cavity, one end of the second cavity is communicated with one end of the first cavity, and, in the radial direction of the cover body, the distance between two opposite cavity walls of the first cavity is h, and the distance between two opposite cavity walls at one end of the second cavity is kh<0>; and a sound absorption material, wherein the second cavity is filled with the sound absorption material, and in the direction away from the second cavity, h meets the condition that h (x) = kh<0> + k[epsilon]x<m>, m is larger than or equal to 2, k is equal to 1 or 2, and epsilon is a constant. According to the embodiment of the invention, the automobile wheel cover structure has a good sound insulation effect, the weight of the automobile wheel cover structure is light, the realization of light weight of an automobile is facilitated, and the production cost is low.

Description

technical field [0001] The invention relates to the technical field of vehicles, and more particularly relates to a hollow sound-insulating automobile wheel cover structure with an inner cavity of an acoustic black hole. Background technique [0002] In the related art, the sound absorption performance of the wheel cover is improved by increasing the thickness of the wheel cover, changing the material of the wheel cover, or attaching a sound-absorbing material on the wheel cover. However, increasing the thickness of the wheel cover will easily lead to an increase in the mass of the wheel cover, which does not conform to the trend of lightweight, and increases the manufacturing cost; changing the material of the wheel cover requires a large amount of research and development funds for experiments, and the results are difficult to predict; The combination of sound-absorbing materials requires more sound-absorbing materials, which increases the quality and cost of the wheel cov...

AI Technical Summary

Problems solved by technology

However, increasing the thickness of the wheel cover will easily lead to an increase in the mass of the wheel cover, which does not conform to the trend of lightweight, and increases the manufacturing cost; changing the material of the wheel cover requires a large amount of research and development funds for experiments, and the results are difficult to predict; The combination of sound-absorbing materials requires more sound-absorbing materials, which increases the quality and cost of the wheel cover, and the sound-absorbing materials are easy to interfere with other parts of the vehicle, and are prone to fall off during driving

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