Patent ID: 7685777
Filing Date: 2010-03-30
Classification: B60J

Abstract:
1. A weather strip for a motor vehicle, which is to be attached to a flange around an opening in a vehicle body for sealing an opening surface of the vehicle body against a facing member, comprising: a trim portion including an outer side wall, an inner side wall and a bottom wall for attachment to the flange and holding the weather strip; and a tubular seal portion integrally formed with said trim portion for contacting the facing member and effecting a seal between the opening surface and the facing member, wherein said tubular seal portion comprises: wherein a distal end of said second outer seal wall and a distal end of said second inner seal wall being joined to each other, and said outer wall is formed in an L-shaped configuration and said inner wall is formed in an L-shaped configuration, said tubular seal portion having a substantially lozenge-shaped cross-section, wherein a joint of said first outer seal wall and said second outer seal wall defines an outer flexing part, wherein a joint of said first inner seal wall and said second inner seal wall defines an inner flexing part, wherein said outer seal wall has a thickness which is the greatest in a joint area of said first outer seal wall to said trim portion, and gradually decreases in the order of said second outer seal wall and said outer flexing part, and said inner seal wall has a thickness which is the greatest in a joint area of said first inner seal wall to said trim portion, and gradually decreases in the order of said second inner seal wall and said inner flexing part, wherein a thickness of the first outer seal wall is substantially the same as a thickness of the first inner seal wall, and a thickness of each of the first outer seal wall and the first inner seal wall is greatest in a part adjacent to the bottom wall that comprises a root thereof, and a thickness of a remaining part of each or the first outer seal wall and the first inner seal wall is approximately constant or gradually decreases toward each of the flexing parts, such that a thickness of the tubular seal portion in the outer flexing part and the inner flexing part is less than a thickness of a remaining portion of the tubular seal portion, wherein said weather strip comprises one of a trunk weather strip and a back door weather strip, and wherein said weather strip is composed of one of an ethylene propylene diene M-class rubber (EPDM rubber) and a thermoplastic olefin elastomer.