- 专利标题： SOUND-ABSORBING COVER
-
申请号： US17961570申请日： 2022-10-07
-
公开(公告)号： US20230034180A1公开(公告)日： 2023-02-02
- 发明人: Koji Tomiyama , Kazuyoshi Onishi , Yuhei Adachi , Kazuto Tanaka , Yasuo Suzuki , Hiroki Taguchi
- 申请人： Sumitomo Riko Company Limited , TOKAI CHEMICAL INDUSTRIES, LTD.
- 申请人地址： JP Aichi; JP Gifu
- 专利权人： Sumitomo Riko Company Limited,TOKAI CHEMICAL INDUSTRIES, LTD.
- 当前专利权人： Sumitomo Riko Company Limited,TOKAI CHEMICAL INDUSTRIES, LTD.
- 当前专利权人地址： JP Aichi; JP Gifu
- 优先权： JP2020-076405 20200423
- 主分类号： B60R13/08
- IPC分类号： B60R13/08 ; B32B5/18 ; B32B7/022 ; B32B3/30 ; B32B3/06 ; B32B5/32 ; G10K11/168
摘要：
A sound-absorbing cover comprises a first sound-absorbing layer and a second sound-absorbing layer made of foam, a first skin layer of the first sound-absorbing layer and a second skin layer of the second sound-absorbing layer are layered in a state of being made to face each other, and an air layer is provided between the facing surfaces of the first skin layer and the second skin layer. The rigidity of the first skin layer of the first sound-absorbing layer is different from the rigidity of the second skin layer of the second sound-absorbing layer.