Wheel with sound absorption device

Abstract

The invention relates to a wheel with a sound absorption device, the sound absorption device (10) is mounted in a wheel air chamber (30) for reducing acoustic resonance, and the sound absorption device comprises two resonance sound absorption structure units which are connected in parallel; wherein a first sound absorption frequency band of the first resonant sound absorption structure unit (10-1) and a second sound absorption frequency band of the second resonant sound absorption structure unit (10-2) are adjacent to each other or partially overlapped, the resonance frequency of the wheel air chamber is included in the adjacent position of the first sound absorption frequency band and the second sound absorption frequency band or the overlapping area of the first sound absorption frequency band and the second sound absorption frequency band. According to the technical scheme, organic combination of Helmholtz resonance sound absorption and structural resonance sound absorption can be achieved on the wheel, the sound absorption frequency band is wider, the sound absorption amount is higher, and the more effective sound absorption effect is achieved.

Description

technical field [0001] The invention relates to a wheel with a sound absorbing device, in particular an automobile wheel equipped with pneumatic tires. Background technique [0002] During the normal running of the vehicle, the excitation of the road to the wheels and the excitation of the wheel shaft to the wheels caused by the unbalanced wheel rotation can both excite the air chamber in the wheel to generate acoustic resonance, and the resonance is transmitted to the vehicle through the wheel shaft and suspension system. The body structure, which in turn radiates noise into the vehicle interior. Its noise characteristics are mainly low-frequency and narrow-band, and its magnitude is relatively high. It creates noise interference to the riding environment in the car and needs to be effectively controlled. [0003] Currently, there are numerous studies and patents providing methods for effectively controlling this acoustic resonance. This method mainly adopts the principle...

AI Technical Summary

Problems solved by technology

[0008] The technical solution proposed by the present invention is mainly based on the following ideas: one is to adopt two single-hole resonant sound-absorbing structures, and each sound-absorbing structure corresponds to a sound-absorbing frequency with a certain bandwidth. The resonant frequency of the wheel air chamber, the two sound-absorbing structures are installed in parallel, so that the sound energy of a wider frequency band can be absorbed, so as to overcome the single Helmholtz resonance sound absorption in the control principle and improve the low-frequency sound absorption capacity in a limited volume. Difficulties and narrow sound-absorbing frequency band; second, the sound-absorbing device adopts a rectangular hexahedral box structure, especially made of plastic materials, and its structural resonance frequency is preferably designed to be consistent with the resonance frequency of the wheel air chamber. Thereby can further increase sound absorption on the basis of Helmholtz resonance sound absorption, and expand sound absorption frequency band; The 3rd, the present invention adopts two parallel sound absorption structures (such as the Helmholtz resonator of single hole), its Simple structure, easy processing

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