Radial multidirectional dispersed sound-absorbing material

A sound-absorbing material and radiation-type technology, applied in the field of sound-absorbing materials, can solve the problems of passive sound absorption effect, hindered sound transmission, poor sound absorption efficiency, etc., and achieve the effect of improving sound absorption and noise reduction, reducing transmission speed and good sound absorption effect.

Active Publication Date: 2020-10-16
拾音汽车科技(上海)有限公司
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004]Existing sound-absorbing materials generally use porous structures to hinder sound transmission and achieve sound absorption, but this method has a relatively low sound-absorbing effect Passive, only for sound absorption, the overall sound absorption efficiency is poor

Method used

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  • Radial multidirectional dispersed sound-absorbing material
  • Radial multidirectional dispersed sound-absorbing material
  • Radial multidirectional dispersed sound-absorbing material

Examples

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Embodiment 1

[0039] see figure 1 , a radial multidirectional dispersed sound-absorbing material, comprising an outer sound-collecting layer 11, a differentiated interlayer 12, and a sound-absorbing hole layer 13, the outer sound-collecting layer 11, the differentiated interlayer 12, and the sound-absorbing hole layer 13 are distributed sequentially from outside to inside, and Two pairs that are close to each other are fixedly connected.

[0040] see Figure 2-3 The surface of the outer sound collecting layer 11 is dug with a plurality of evenly distributed sound collecting holes 2, the middle part of the sound collecting holes 2 is fixedly connected with a vibrating diaphragm 3, and the end of the vibrating diaphragm 3 facing the differentiated interlayer 12 is fixedly connected with a slow vibrating rod 4 The middle part of the differentiation interlayer 12 is excavated with a plurality of differentiation cavities 7 corresponding to the sound collection holes 2, the slow vibrating rod 4 ...

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Abstract

The invention discloses a radial multidirectional dispersed sound-absorbing material, and belongs to the field of sound absorbing materials; according to the radial multidirectional dispersed sound-absorbing material, on one hand, sound waves are converted into the vibration force of slow vibration rods; under the vibration effect of the slow vibration rods, the slow vibration rods are in a radialshape, so the sound is transmitted into the sound-absorbing material along the continuously changing direction of the slow vibration rods, and through similarly breaking up the entirety into parts, the sound can be differentiated; further, the sound absorption and noise reduction effects of the sound-absorbing material are obviously improved. On the other hand, when the sound is transmitted to the slow vibration rods; sound propagation speed is reduced, the time of sound in the sound-absorbing material is prolonged, and furthermore, the effect of sound consumption is achieved, so that sound absorption effect is better; and meanwhile, the upward vibration amplitude of the slow vibration rods can be effectively increased by matching with the effect of a differentiation-assisting fixed ball,so that the differentiation range of the sound-absorbing material to the sound is larger, and the sound absorption effect of the sound-absorbing material is further improved.

Description

technical field [0001] The invention relates to the field of sound-absorbing materials, more specifically, to a radial multidirectionally dispersed sound-absorbing material. Background technique [0002] Sound-absorbing material (sound-absorbing material): Any material can absorb sound, but the degree of absorption is very different. Generally, materials with an average sound absorption coefficient of more than 0.2 for the above six frequencies are listed as sound-absorbing materials. Most of the sound-absorbing materials are loose and porous materials, such as slag wool, blankets, etc. The sound-absorbing mechanism is that the sound waves penetrate into the pores of the material, and the pores are mostly open holes that communicate with each other internally. The fine fibers vibrate mechanically, so that the sound energy is converted into heat energy. The sound absorption coefficient of this kind of porous sound-absorbing material generally increases gradually from low fr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10K11/168B32B33/00B32B3/24
CPCG10K11/168B32B33/00B32B3/266
Inventor 不公告发明人
Owner 拾音汽车科技(上海)有限公司
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