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A technology of a sound-absorbing device and sound-absorbing layer, which is applied to sound-producing equipment, instruments, etc., can solve the problems of no effect, the bending force reduces resonance, and the sound-absorbing effect is not good enough, and achieves the improvement of sound-absorbing effect, weight reduction, and good barrier. weakening effect

Inactive Publication Date: 2007-04-18
郭自刚
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AI Technical Summary

Problems solved by technology

[0002] The cover wall of an existing sound-absorbing and sound-insulating cover is shown in Figure 1. It is composed of an inner sound-absorbing material layer 5, a middle asphalt glass fiber board 6 and an outermost steel plate 7. This sound-absorbing and sound-insulating cover only The built-in sound can be reduced once through the sound-absorbing material layer 5, while the asphalt glass fiber board 6 and the outermost steel plate 7 only play the role of strengthening the bending resistance and reducing resonance, and have no effect on sound attenuation. The sound transmitted to the outside through the enclosure wall is still very strong, and its noise reduction effect is not good enough

Method used

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Embodiment Construction

[0009] The specific embodiment of the present invention includes a box, which is characterized in that: the box is composed of an inner sound-absorbing layer 1 and an outer reinforcement layer 2, and the described sound-absorbing layer is composed of several layers of sound-absorbing layers. The middle part of the sound-absorbing layer is provided with a wooden sound-absorbing layer 12 made of wood material; the reinforcement layer is made of wood material.

[0010] In order to improve the sound attenuation effect, the wooden material that constitutes the wooden sound attenuation layer and the reinforcement layer is made of wood chips and glue, which makes the internal fiber structure of the wood sound attenuation layer and the reinforcement layer more intertwined and messy, which not only improves the sound attenuation effect significantly, but also because the wood chips It is mixed with glue and pressed together, so that the strength of the wooden sound-absorbing layer and t...

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Abstract

The invention relates to a muffling device that includes box. The feature is that: muffling inner layer and reinforced outer layer are included in box. And the muffling layer is compounded by several muffling layer. Wood material is set at the middle of several muffling layers. And the reinforced layer is formed by wood material. The invention could sharply decrease the cost of material, lighten weight of box and improve muffling effect.

Description

technical field [0001] The present invention relates to a sound-absorbing device for sound-absorbing various sound sources. Background technique [0002] The cover wall of an existing sound-absorbing and sound-insulating cover is shown in Figure 1. It is composed of an inner sound-absorbing material layer 5, a middle asphalt glass fiber board 6 and an outermost steel plate 7. This sound-absorbing and sound-insulating cover only The built-in sound can be reduced once through the sound-absorbing material layer 5, while the asphalt glass fiber board 6 and the outermost steel plate 7 only play the role of strengthening the bending resistance and reducing resonance, and have no effect on sound attenuation. The sound transmitted to the outside through the cover wall is still very strong, and its sound attenuation effect is not good enough. Contents of the invention [0003] The object of the present invention is to provide a sound-absorbing device, which has a good sound-absorb...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10K11/168
Inventor 郭自刚
Owner 郭自刚
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