Title:
HOLLOW STRUCTURAL MEMBER
Document Type and Number:
Japanese Patent JP3943926
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a hollow structural member enhancing the strength of a connecting portion with another member without increasing weight, and making lightweight and rigidity improvement compatible.
SOLUTION: A bulging portion 12 is provided at a position where another member 11 is connected on a member body 10 extending long. Preferably, the bulging portion 12 comprises a welding margin smoothly forming a part of a bulging portion shape, and bulges out in a loading direction or has heavy wall thickness. Preferably, the bulging portion 12 is made to have the wall thickness larger than that of the member body 10, and comprises striped shapes parallel in a longitudinal direction, thereby preventing buckling. The bulging portion 12 is formed by hydraulic forming of a tubular material.
Inventors:
Hirotoshi Hishida
Hiroshige
Hiroshige
Application Number:
JP2001386929A
Publication Date:
July 11, 2007
Filing Date:
December 20, 2001
Export Citation:
Assignee:
Nippon Steel Corporation
International Classes:
B62D21/02; B62D25/20; B21D26/033; B21D26/035; B21D51/16; B21D53/88; (IPC1-7): B62D21/02; B21D26/02; B21D51/16; B62D25/20; //B21D53/88
Domestic Patent References:
JP7017435A | ||||
JP9155478A |
Attorney, Agent or Firm:
Tatsuo Watanuki
Fumio Yamamoto
Fumio Yamamoto
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