Sound absorption device and wheel with sound absorption device

A sound-absorbing device and wheel technology, applied in the direction of wheels, rims, sound-producing equipment, etc., can solve the problems of increasing sound absorption, narrow sound absorption frequency band, difficulty in low-frequency sound absorption, etc., and achieve high sound absorption and sound absorption frequency. The effect of bandwidth, effective sound absorption

Pending Publication Date: 2020-02-18
CITIC DICASTAL
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Problems solved by technology

[0005] In order to improve the resonance control effect of the wheel air chamber, the present invention is mainly based on the following ideas: one is to adopt a double-layer porous resonance sound absorption structure, which overcomes the single Helmholtz resonance sound absorption in the control principle and improves the low-frequency sound absorption capacity under a limited volume. Difficulties and narrow sound-absorbing frequency band; the second is to adopt a rectangular hexahedron-shaped box structure, preferably made of plastic materials, and design its structural resonance frequency to be consistent with the resonance frequency of the air chamber. On the basis of double-layer porous resonance sound absorption Further increase the sound absorption and expand the sound absorption frequency band

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  • Sound absorption device and wheel with sound absorption device
  • Sound absorption device and wheel with sound absorption device
  • Sound absorption device and wheel with sound absorption device

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[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of this application.

[0027] The terms "first", "second", "third", "fourth" and the like in the description and claims of the present application and the drawings are used to distinguish different objects, rather than to describe a specific order . Furthermore, the terms "comprising" and "having", as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, product, or device that includes a series of steps or units is not limited ...

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Abstract

The invention relates to a sound absorption device and a wheel with the sound absorption device. The sound absorption device (10) is constructed into a box body in a rectangular hexahedron shape, anda porous double-layer Helmholtz resonance sound absorption structure is formed; meanwhile, the sound absorption device (10) in a box body form forms a structure resonance sound absorption device by the self; and the first-order inherent mode frequency is identical to the first-order inherent mode frequency of a wheel air chamber (30). When the box type sound absorption structure provided by the invention is assembled in the wheel, the function of duplex absorption of wheel air chamber sound resonance by organically combining the Helmholtz resonance sound absorption and the structure resonancesound absorption can be realized.

Description

technical field [0001] The invention relates to a sound absorbing device and a wheel with the sound absorbing device, in particular to an automobile wheel equipped with pneumatic tires. Background technique [0002] During the normal running of the wheel, the excitation of the road to the wheel and the excitation of the axle to the wheel 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 body through the axle and suspension system 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 princi...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10K11/16B60B19/00
CPCG10K11/16B60B19/00B60B21/12B60B2900/133B60B21/026B60C19/002
Inventor 徐世文陈铭博李明磊黄少兵胡铁峰冯树伟王大东刘伟东
Owner CITIC DICASTAL
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