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Patent Searching and Data


Title:
SOUNDPROOF STRUCTURAL BODY, COMPONENT FOR VEHICLE, AND AUTOMOBILE
Document Type and Number:
WIPO Patent Application WO/2019/008775
Kind Code:
A1
Abstract:
This soundproof structural body comprises: a sound absorbing material having non-through holes; and a sound insulating material that faces the surface of the sound absorbing material in which the non-through holes are open, and that is provided so as to be spaced a predetermined distance away from an air layer, the soundproof structure being characterized in that the non-through holes of the sound absorbing material have a Helmholtz resonance structure comprising an introduction passage that is open to the outer surface and a hollow part connected to the outside via the introduction passage, wherein the resonance transmissive frequency f(Hz) is derived with equation (1).

Inventors:
FURUZAWA, Hideki (LTD. Ogaki Kita Plant 1-1, Kitagata, Ibigawacho, Ibi-gu, Gifu 95, 〒5010695, JP)
SAKAGUCHI, Hiroshi (LTD. Ogaki Kita Plant 1-1, Kitagata, Ibigawacho, Ibi-gu, Gifu 95, 〒5010695, JP)
NISHIKAWA, Tomohiro (LTD. Ogaki Kita Plant 1-1, Kitagata, Ibigawacho, Ibi-gu, Gifu 95, 〒5010695, JP)
NOMURA, Toshihiro (LTD. Ogaki Kita Plant 1-1, Kitagata, Ibigawacho, Ibi-gu, Gifu 95, 〒5010695, JP)
Application Number:
JP2017/025056
Publication Date:
January 10, 2019
Filing Date:
July 07, 2017
Export Citation:
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Assignee:
IBIDEN CO., LTD. (1 Kandacho 2-chome, Ogaki-shi Gifu, 04, 〒5038604, JP)
International Classes:
G10K11/172; G10K11/16; G10K11/168
Foreign References:
JP2015151105A2015-08-24
JPH08121142A1996-05-14
Attorney, Agent or Firm:
YASUTOMI & ASSOCIATES (5-36, Miyahara 3-chome Yodogawa-ku, Osaka-sh, Osaka 03, 〒5320003, JP)
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