Title:
GROOVE LID OF SOUND ATTENUATION STRUCTURE
Document Type and Number:
Japanese Patent JP2989534
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To fill a gap between an opening of a U-shaped block 7 and a groove lid and prevent a clatter from occurring by fitting a reversed C-shape cross-sectional sound attenuation plate-consisting of an elastic material in both the ends of a groove lid to be a width direction in use.
SOLUTION: A reversed C-shape cross-sectional sound attenuation plate S1 consisting of an elastic material is fitted in width directional both ends of a square plank groove lid C1. The groove lid C1 is placed on the groove lid placing face of a U-shaped block B via a lower plate 3 of the reversed C-shape cross-sectional sound attenuation plate S1. A raised plate part 1 of the sound attenuation plate S1 is interposed between the side end face of the groove lid C1 and the inside face of a side wall upper end of the U-shaped block B in order to fill a gap therebetween. The upper plate 2 and covered plate 5 are provided integrally relative to the raised plate part 1 so as to prevent soil and sand from coming into the interstice. The rigid rubber sound attenuation plate S1 is disposed in an interface between the U-shaped block B and the groove lid C1, thereby preventing the occurrence of a clatter caused by a rattle of the groove lid C1 under loads of vehicles.
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Inventors:
SUGYAMA SHUHEI
Application Number:
JP2599996A
Publication Date:
December 13, 1999
Filing Date:
January 19, 1996
Export Citation:
Assignee:
SUGYAMA PURASUCHITSUKU KK
International Classes:
E03F5/04; (IPC1-7): E03F5/04
Domestic Patent References:
| JP59147781U | ||||
| JP325678U |
Attorney, Agent or Firm:
Tetsuhiro Naito