Invention Grant
- Patent Title: Vehicle sound absorption structure
- Patent Title (中): 车辆吸音结构
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Application No.: US13984119Application Date: 2012-02-01
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Publication No.: US08973978B2Publication Date: 2015-03-10
- Inventor: Toyoka Ide
- Applicant: Toyoka Ide
- Applicant Address: JP Toyota
- Assignee: Toyota Jidosha Kabushiki Kaisha
- Current Assignee: Toyota Jidosha Kabushiki Kaisha
- Current Assignee Address: JP Toyota
- Agency: Oliff PLC
- Priority: JP2011-028522 20110214
- International Application: PCT/IB2012/000220 WO 20120201
- International Announcement: WO2012/110866 WO 20120823
- Main IPC: B60R13/08
- IPC: B60R13/08 ; G10K11/175

Abstract:
A vehicle sound absorption structure has: a recessed cell that has an opening on one end of the cell; a divider that is provided within the cell and that divides an acoustic wave entering the cell from the opening into two acoustic waves; reflectors that reflect one of the two acoustic waves divided at the divider and reflect the other acoustic wave respectively toward the opening, and that generate a phase difference between the one acoustic wave and the other acoustic wave; and an interfering portion that is provided within the cell and that causes the one acoustic wave and the other acoustic wave, which have been respectively reflected at the reflectors, to interfere with each other.
Public/Granted literature
- US20130307290A1 VEHICLE SOUND ABSORPTION STRUCTURE Public/Granted day:2013-11-21
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