Broad-band noise insulation honeycomb plate

A honeycomb panel and broadband technology, applied in the field of broadband sound-proof honeycomb panels, can solve the problems of difficulty in dealing with low-frequency noise and decline in sound insulation performance, and achieve the effect of widening the sound absorption band, reducing product weight, and meeting lightweight requirements

Active Publication Date: 2016-10-26
CHONGQING CHANGAN AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in some products with sound insulation requirements, the application of lightweight materials poses a considerable challenge to the sound insulation performance of the products, especially for products with low-frequency noise sources, the lightweight of materials means the dec...

Method used

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  • Broad-band noise insulation honeycomb plate
  • Broad-band noise insulation honeycomb plate
  • Broad-band noise insulation honeycomb plate

Examples

Experimental program
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Embodiment Construction

[0027] The present invention will be further described below in conjunction with the accompanying drawings.

[0028] like figure 1 and figure 2 The shown broadband sound insulation honeycomb panel is formed by bonding a first orifice plate 4, a first honeycomb core 1, an elastic film 3, a second honeycomb core 2, and a second orifice plate 5 in sequence. A number of first cavities 8 are distributed, a number of second cavities 9 corresponding to the first cavities 8 are distributed on the second honeycomb core 2 , and a number of the first cavities 8 are distributed on the first orifice plate 4 . The connected first micro-perforations 6 and the second orifice plate 5 are distributed with second micro-perforations 7 which are in communication with the second cavity 9 . Since the first cavities 8 and the second cavities 9 are in one-to-one correspondence, the first honeycomb core 1 and the second honeycomb core 2 divide the elastic film 3 into several elastic units. The cavi...

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Abstract

The invention relates to a broad-band noise insulation honeycomb plate. The honeycomb plate is formed by sequentially bonding a first pore plate, a first honeycomb core, an elastic film, a second honeycomb core and a second pore plate, wherein a plurality of first cavities are distributed in the first honeycomb core; a plurality of second cavities in one-to-one correspondence to the first cavities are distributed in the second honeycomb core; first micro through pores communicating with the first cavities are distributed in the first pore plate; second micro through pores communicating with the second cavities are distributed in the second pore plate. The honeycomb plate can meet the light-weight requirement and can also insulate broad-band noises.

Description

technical field [0001] The invention relates to a sound insulation board, in particular to a broadband sound insulation honeycomb board. Background technique [0002] As we all know, noise treatment or construction can proceed from two aspects: noise source and noise transmission path: reducing noise source or isolating noise from transmission path. In most cases, the noise source cannot be determined, unique or difficult to modify, and noise isolation becomes a main means of reducing noise. [0003] In practical engineering, a board with sound insulation or sound absorption properties is generally placed between the noise source and the receiver as a sound insulation barrier to reduce the energy radiated from the noise. For example, in order to reduce the impact of vehicle noise on highways or viaducts on the noise of living areas, a certain height of sound barriers are set up on both sides of the highway; in order to reduce the transmission of car engine noise to the pass...

Claims

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Application Information

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IPC IPC(8): B32B3/12B32B3/24
CPCB32B3/12B32B3/266B32B2307/718B32B2307/102B32B2250/05B32B2250/40
Inventor 张思文庞剑张军章晓轩刘宏玉
Owner CHONGQING CHANGAN AUTOMOBILE CO LTD
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