The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 01, 2011
Filed:
Mar. 11, 2009
Narikazu Hashimoto, Shimonoseki, JP;
Tsunetake Tsuyoshi, Shimonoseki, JP;
Hideki Ishitobi, Shinagawa-ku, JP;
Satoshi Nimura, Shimonoseki, JP;
Toru Hashimura, Kobe, JP;
Narikazu Hashimoto, Shimonoseki, JP;
Tsunetake Tsuyoshi, Shimonoseki, JP;
Hideki Ishitobi, Shinagawa-ku, JP;
Satoshi Nimura, Shimonoseki, JP;
Toru Hashimura, Kobe, JP;
Kobe Steel, Ltd., Kobe-shi, JP;
Abstract
The bumper stay includes a cylindrical shaft member fit in to a hole of a bumper reinforce, a cylindrical reinforcing member fit in to the outer periphery of the shaft member in the rear side of the bumper reinforce, and a mounting flange member fit in to the outer periphery of the shaft member in its rear end. The shaft member is enlarged by electromagnetic forming and is tightly adhered to the inner peripheral surface of the hole formed in the bumper reinforce, the inner peripheral surface of the reinforcing member, and the inner peripheral surface of the hole flange formed in the mounting flange member, thereby these are joined with each other. Thin aluminum alloy extruded material can be used for the shaft member. With such configuration, when a bumper stay is fit in to the holes formed in the front and rear walls of the bumper reinforce and the bumper stay is enlarged by electromagnetic forming to join with the bumper reinforce, joining of the both can be firmly performed and sufficient strength and energy absorption quantity can be secured.