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Sound absorbing unit and sound absorbing structure

A wall and component technology, applied in the field of sound-absorbing units and sound-absorbing structures, can solve problems such as narrow sound-absorbing sound band

Active Publication Date: 2020-05-12
YAMAHA CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in the sound-absorbing structure described in Patent Document 1, since only Helmholtz resonance is used for sound absorption, there is a problem that the sound-absorbable frequency band is narrow.

Method used

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  • Sound absorbing unit and sound absorbing structure
  • Sound absorbing unit and sound absorbing structure
  • Sound absorbing unit and sound absorbing structure

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Embodiment approach

[0026] Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, the dimension and scale of each part in a drawing differ suitably from an actual thing. In addition, the embodiment described below is a preferable specific example of this invention. Therefore, various technically preferable limitations are attached to the present embodiment. However, the scope of the present invention is not limited to these aspects unless there is no description of the gist of limiting the present invention in particular in the following description.

[0027] 1-1. Structure of sound-absorbing structure

[0028] figure 1 It is a plan view of the sound-absorbing structure 100 according to the embodiment. figure 2 yes figure 1 A1-A1 line sectional view in. figure 1 and figure 2 The illustrated sound-absorbing structure 100 is a structure that absorbs sound using Helmholtz resonance. The sound-absorbing structure 100 has a wall body ...

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Abstract

The invention provides a sound-absorbing unit with a wide sound-absorbing frequency band and a sound-absorbing structure; the sound absorbing unit includes a first member including at least one firstopening portion for enabling Helmholtz resonance, and a second member that is on the first member, has a plate shape or a sheet shape. The second member includes at least one second opening portion overlapping one-to-one with the at least one first opening portion in planar view. A periphery of each of the at least one second opening portion coincides with or is located outside a periphery of eachcorresponding one of the at least one first opening portion in planar view. The second member is formed of a porous material.

Description

technical field [0001] The present invention relates to a sound-absorbing unit and a sound-absorbing structure. Background technique [0002] A sound-absorbing structure using Helmholtz resonance is known. For example, the sound-absorbing structure described in Patent Document 1 includes a plate-shaped member having a plurality of openings, and an air layer is provided between the plate-shaped member and the wall. The sound-absorbing structure described in Patent Document 1 further includes an extension member connected to the opening of the plate-shaped member. At least a part of the extension member is accommodated in the air layer in a state separated from the wall body. In Patent Document 1, a gypsum board is mentioned as a plate-shaped member. [0003] Patent Document 1: Japanese Patent Laid-Open No. 2013-008012 [0004] However, in the sound-absorbing structure described in Patent Document 1, since only Helmholtz resonance is used for sound absorption, there is a p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G10K11/16
CPCG10K11/16G10K11/172G10K11/168G10K11/162
Inventor 本地由和
Owner YAMAHA CORP