Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

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
View PDF4 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • 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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[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 ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

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...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
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
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com