Sound absorber unit and wheel having sound absorbing device

A sound absorber and wheel technology, which is applied in the direction of wheels, sound-generating equipment, transportation and packaging, etc., can solve the problems of high noise reduction, difficulty in achieving effective control of low-frequency broadband noise, etc., and achieve high sound absorption and effective sound absorption effect , The effect of sound absorption frequency bandwidth

Pending Publication Date: 2022-05-27
CITIC DICASTAL
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AI Technical Summary

Problems solved by technology

[0006] In order to improve the resonance control effect of the wheel air chamber, the present invention is mainly based on the following ideas: First, the porous three-layer resonance sound absorption structure is used to overcome the difficulty of achieving low-frequency broadband noise in a limited volume in a single Helmholtz resonance sound absorption in the control principle. Control defects; the second is to adopt a 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, and achieve resonance sound absorption under the combined action of three layers of double holes and single holes , to achieve higher noise reduction in a wider frequency band; the third is to allow the use of three-layer hollow square tube structure, simple structure and convenient processing

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  • Sound absorber unit and wheel having sound absorbing device
  • Sound absorber unit and wheel having sound absorbing device
  • Sound absorber unit and wheel having sound absorbing device

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Embodiment Construction

[0027] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of this application.

[0028] The terms "first", "second", "third" 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", and any conjugations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, product or device comprising a series of steps or units is not limited to the...

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Abstract

The invention relates to a sound absorber unit and a wheel with a sound absorbing device. The sound absorbing device comprises at least one sound absorber unit or at least one sound absorber assembly formed by combining a plurality of sound absorber units into a whole. The sound absorber unit is constructed into a hexahedron-shaped box body and forms a three-layer Helmholtz resonance sound absorption structure combining double holes and a single hole, and meanwhile, the sound absorber unit or the sound absorber assembly forms a structural resonance sound absorption device. According to the invention, the function of dual absorption of wheel air chamber acoustic resonance, which organically combines Helmholtz resonance sound absorption and structural resonance sound absorption, can be realized.

Description

technical field [0001] The invention relates to a sound absorber unit and a wheel with a sound absorption device, in particular a vehicle wheel equipped with pneumatic tires. Background technique [0002] During the normal driving of the vehicle, the excitation of the wheel by the road surface and the excitation of the wheel by the axle caused by the unbalanced rotation of the wheel can excite the air chamber in the wheel to generate acoustic resonance, which is transmitted to the axle through the axle and the suspension system. The body structure, which in turn radiates noise into the vehicle. Its noise characteristics are mainly low-frequency and narrow-band, and the magnitude is relatively high, which causes noise interference to the riding environment in the car, and needs to be effectively controlled. [0003] At present, there are numerous studies and patents providing methods to effectively control this acoustic resonance. This method mainly adopts the sound absorpt...

Claims

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Application Information

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IPC IPC(8): G10K11/172G10K11/162B60B19/00
CPCG10K11/172G10K11/162B60B19/00B60B21/12B60B2900/133G10K2210/32272
Inventor 李希徐佐朱志华徐世文李世德黄少兵陈铭博李明磊
Owner CITIC DICASTAL
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