Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
SOUND-PROOFING STRUCTURE, SOUND-PROOFING ENCLOSURE, AND SOUND-PROOFING BOX
Document Type and Number:
WIPO Patent Application WO/2019/138884
Kind Code:
A1
Abstract:
This sound-proofing structure has: a honeycomb core; a first surface plate and a second surface plate which sandwich the honeycomb core; through-holes perforated in the first surface plate; and a sound absorbing body arranged on one surface of the first surface plate, the one side being located on the honeycomb core side, wherein the opening ratio of the through-holes in the first surface plate is at least 1.0%. This sound-proofing enclosure and sound-proofing box use the sound-proofing structure. This sound-proofing structure can achieve a sturdy and lightweight sound-proofing box capable of broadband sound absorption and having improved sound absorbing performance.

Inventors:
YAMAZOE SHOGO (JP)
HAKUTA SHINYA (JP)
MATSUOKA CHIKA (JP)
Application Number:
JP2018/047879
Publication Date:
July 18, 2019
Filing Date:
December 26, 2018
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
FUJIFILM CORP (JP)
International Classes:
G10K11/16; B32B3/12; E04B1/86; G10K11/162; G10K11/172
Domestic Patent References:
WO2017170353A12017-10-05
Foreign References:
JP2016200695A2016-12-01
JPS6314300U1988-01-29
JP2012013912A2012-01-19
JP2017151256A2017-08-31
JP3100699U2004-05-27
JP2010191029A2010-09-02
JP2012103556A2012-05-31
Attorney, Agent or Firm:
ITOH Hideaki et al. (JP)
Download PDF: