Title:
筒状部品、特に自動車の車体部品内に取り付けるための防音装置
Document Type and Number:
Japanese Patent JP2004533959
Kind Code:
A
Abstract:
An acoustic insulation device for mounting in a tubular part of the bodywork of an automobile comprising a partitioning insert with around it a thermally expandable foam forming cord held in place by retaining means and including means of favorizing the expansion of the cord in the direction of the inner periphery of the tubular part. An acoustic insulation device for mounting in a tubular part of the bodywork of an automobile comprising a partitioning insert with around it a thermally expandable foam forming cord held in place by retaining means and including means of favorizing the expansion of the cord in the direction of the inner periphery of the tubular part. The device is as shown in Figure 2. The cord is produced by extrusion in a straight sided form without any special shaping. The retaining means, which are molded with the partitioning insert also act to ensure correct expansion of the cord. In an alternate form of the device it consists of two plates fixed to one another and separated by a lateral wall which forms a brace and delimits a peripheral depression suitable for receiving the cord. The wall is provided with pressure relief vents to prevent distortion of the insert during expansion of the cord. An Independent claim is included for a tubular part of the bodywork of an automobile which comprises a claimed device.
More Like This:
Inventors:
Latte, florance
Application Number:
JP2003510301A
Publication Date:
November 11, 2004
Filing Date:
July 02, 2002
Export Citation:
Assignee:
HUTCHINSON
International Classes:
B62D25/04; B29C44/18; B60R13/08; B60R99/00; B62D25/20; B62D29/00; G10K11/16; (IPC1-7): B62D25/04; B60R13/08; B62D25/20; G10K11/16
Attorney, Agent or Firm:
Michio Nakajima
Masahiro Nakashima
Masahiro Nakashima