IP Library › Granted Patent US 12,281,470
Granted Patent B2
US 12,281,470 · App. 18/486,187 · Granted Apr 22, 2025

Sound insulation sheet member and sound insulation structure using same

Inventors: Shogo Koga (Chiyoda-ku, JP); Shuichi Akasaka (Meguro-ku, JP)
Assignee: Mitsubishi Chemical Corporation
E04B1/8409B32B3/00B32B3/30B32B25/04E04B1/86E04B1/941G10K11/162G10K11/172B32B2307/102B32B2307/3065E04B2001/8419E04B2001/8428G10K11/168
View Patent ↗
Loading inventors, assignments & file history…
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 12,281,470
App. No.
18/486,187
Granted
Apr 22, 2025
Kind
B2
Abstract

An object of the present invention is to provide a structural body that has high vibration damping and high sound-insulating performance which exceeds mass law while being relatively light weight, that is highly flexible in design, excellent in versatility, and easy to manufacture so that productivity and economic efficiency can be improved. The object thereof is achieved with a sheet member of a sheet having a thickness of 1 mm or less and having rubber elasticity and a resonant portion, wherein the resonant portion is provided in contact with a surface of the sheet, the resonant portion including a base part and a weight part, and the weight part being supported by the base part and having a larger mass than the base part.

Claims (23)

1. A structural body, comprising:

a sheet member comprising a sheet having rubber elasticity and a resonant portion in contact with a surface of the sheet; and

a support body in contact with a surface of the sheet opposite to the surface contacting the resonant portion;

wherein

the resonant portion includes a base part and a weight part supported by the base part,

a mass of the weight part is larger than a mass of the base part, and

a thickness of the sheet is 1 mm or less.

2. The structural body according to claim 1 , wherein the weight part is arranged such that a center of gravity of the resonant portion is located on a leading end side of the resonant portion.

3. The structural body according to claim 1 , wherein the sheet comprises at least one elastomer selected from the group consisting of a thermosetting elastomer, a photocurable elastomer and a thermoplastic elastomer.

4. The structural body according to claim 1 , wherein the sheet has a Young's modulus of from 0.01 MPa to 100 MPa.

5. The structural body according to claim 1 , wherein the base part comprises at least one material selected from the group consisting of a thermosetting elastomer, a photocurable elastomer, a thermoplastic elastomer, a thermosetting resin, a photocurable resin, and a thermoplastic resin.

6. The structural body according to claim 1 , wherein the sheet and the resonant portion are an integrally molded article, and the sheet and the resonant portion both together comprise at least one elastomer selected from the group consisting of a thermosetting elastomer, a photocurable elastomer and a thermoplastic elastomer.

7. The structural body according to claim 1 , wherein the weight part comprises at least one selected from the group consisting of a metal, an alloy, and an inorganic glass.

8. The structural body according to claim 1 , wherein the weight part includes a protruding part provided toward the base part.

9. The structural body according to claim 1 , wherein at least a part of the weight part is embedded in the base part on a leading end side of the resonant portion.

10. The structural body according to claim 1 , further comprising at least one rib-like projecting portion, wherein the rib-like projecting portion is in contact with the sheet surface contacting the resonant portion, and a height of the at least one rib-like projecting portion is higher than the resonant portion in a sheet normal direction.

11. The structural body according to claim 10 , wherein the at least one rib-like projecting portion is provided so as to extend in a length direction of the sheet.

12. The structural body according to claim 10 , comprising a plurality of the rib-like projecting portions which are spaced apart along the length direction of the sheet.

13. The structural body according to claim 10 , wherein the sheet, the resonant portion, and the at least one rib-like projecting portion are an integrally molded article, and the sheet, the resonant portion, and the at least one rib-like projecting portion all together comprise at least one elastomer selected from the group consisting of a thermosetting elastomer, a photocurable elastomer and a thermoplastic elastomer.

14. The structural body according to claim 1 , further comprising a flame retardant and/or a nonflammable member.

15. A sound insulating member comprising the structural body according to claim 1 .

16. A vibration damping member comprising the structural body according to claim 1 .

17. A vibration damping and sound insulating member comprising the structural body according to claim 1 .

Priority Claims (1)
JP 2016-020049 · Feb 4, 2016 · national
Continuity (4)
Continuation 17490070 · Sep 30, 2021
Continuation 16053278 · Aug 2, 2018
Continuation PCTJP2017003985 · Feb 3, 2017
Related Publication 20240035273A1 · Feb 1, 2024
References Cited (46)
US 4515239A · Blatt · 1985 [cited by applicant]
US 5400296A · Cushman · 1995 [cited by applicant]
US 5854453A · Fujiwara · 1998 [cited by examiner]
US 7249653B2 · Sheng · 2007 [cited by applicant]
US 7263028B2 · Thomas · 2007 [cited by examiner]
US 7837008B1 · Lane · 2010 [cited by applicant]
US 8770343B2 · Mathur · 2014 [cited by examiner]
US 11168474B2 · Koga · 2021 [cited by examiner]
US 11821201B2 · Koga et al. · 2023 [cited by applicant]
US 20030062217A1 · Sheng · 2003 [cited by applicant]
US 20050194205A1 · Guo · 2005 [cited by applicant]
US 20060131103A1 · Fuller · 2006 [cited by applicant]
US 20070020447A1 · Yamaguchi et al. · 2007 [cited by applicant]
US 20090301810A1 · Gandhi · 2009 [cited by examiner]
US 20140308492A1 · Albach et al. · 2014 [cited by applicant]
US 20150015930A1 · Hussein et al. · 2015 [cited by applicant]
US 20160186437A1 · Harrington · 2016 [cited by applicant]
CN 104070740A · 2014 [cited by applicant]
EP 2871638A1 · 2015 [cited by applicant]
JP 504495 · 1975 [cited by applicant]
JP 643879A · 1994 [cited by applicant]
JP 2000265593 · 2000 [cited by applicant]
JP 2003122370A · 2003 [cited by applicant]
JP 201253434A · 2012 [cited by applicant]
WO WO9611464A1 · 1996 [cited by applicant]
WO 2007127891A2 · 2017 [cited by applicant]
Decision of Refusal issued Jan. 9, 2024, in corresponding Japanese Patent Application No. 2022-063031 (with English Translation), 4 pages. [cited by applicant]
Japanese Office Action issued Sep. 13, 2022 in Japanese Patent Application No. 2019-198146 (with unedited computer generated English Translation), 14 pages. [cited by applicant]
Extended European Search Report issued Feb. 27, 2024 in European Application No. 23212549.2, 8 pgs. [cited by applicant]
International Search Report issued Apr. 11, 2017 in PCT/JP2017/003985, filed on Feb. 3, 2017. [cited by applicant]
Assouar, M., et al. “Broadband plate-type acoustic metamaterial for low-frequency sound attenuation”, Applied Physics Letters, vol. 101, pp. 173505-1-173505-4, 2012. [cited by applicant]
Oudich, M., et al. “Negative effective mass density of acoustic metamaterial plate decorated with low frequency resonant pillars”, Journal of Applied Physics, vol. 116, pp. 184504-1-184504-7, 2014. [cited by applicant]
Oudich, M., et al. “A sonic band gap based on the locally resonant phononic plates with stubs”, New Journal of Physics, vol. 12, 11 pages, 2010. [cited by applicant]
Liu, Z., et al. “Locally Resonant Sonic Materials”, Science, vol. 289, pp. 1734-1736, 2000. [cited by applicant]
English translation of the International Preliminary Report on Patentability and Written Opinion issued Aug. 16, 2018 in PCT/JP2017/003985. [cited by applicant]
Extended European Search Report issued Feb. 1, 2019 in Patent Application No. 17747560.5, 8 pages. [cited by applicant]
Assouar, M.B. et al. “Enlargement of a locally resonant sonic band gap by using double-sides stubbed phononic plates” Applied Physics Letters, vol. 100, No. 12, XP055545412, 2012, pp. 123506-1 to 123506-4. [cited by applicant]
Japanese Office Action issued Jul. 9, 2019 in Japanese Patent Application No. 2017-565647 (with unedited computer generated English translation), 10 pages. [cited by applicant]
Combined Taiwanese Office Action and Search Report issued Sep. 3, 2020 in Patent Application No. 106103745 (with English machine translation), 17 pages. [cited by applicant]
Japanese Office Action issued Apr. 6, 2021 in Japanese Patent Application No. 2019-198146 (with English translation), 5 pages. [cited by applicant]
Extended European Search Report dated Aug. 5, 2021, in corresponding European Patent Application No. 21179005.0. [cited by applicant]
Japanese Office Action issued Jan. 5, 2022 in Japanese Patent Application No. 2019-198146 (with unedited computer generated English translation) 4 pages. [cited by applicant]
Office Action issued Dec. 13, 2022, in corresponding Japanese Patent Application No. 2019-198146 (with English Translation), 17 pages. [cited by applicant]
Office Action dated Jul. 11, 2023 issued in Japanese Patent Application No. 2022-063031 with the machine English translation. [cited by applicant]
Reconsideration Report before Appeal issued Jun. 30, 2022 in Japanese Patent Application No. 2019-198146 (with English machine translation), 6 pages. [cited by applicant]
Reconsideration Report before Appeal dated Jul. 19, 2024, issued in JP Patent Application No. 2022-063031 (with machine translation). [cited by applicant]