Honda Giken Kogyo Kabushiki Kaisha

Kouji Yamada

Akihiro Shibuya

Yoshiaki Koyama

Yoshinobu Kanazawa

Mitsunori Arimura

Ryuji Shiga

Kaoru Mitsuuchi

Toshiyuki Shibasaki

Yoshiaki Itou

A metal member to be cast-wrapped by a metal cast article, a manufacturing method thereof and a metal cast article including the metal member cast-wrapped are provided. A hollow cylindrical metal member having an outer surface with projections to be cast-wrapped by a metal cast article is manufactured in such a manner that a hollow cylindrical metal raw materialis inserted in a diehaving a inner peripheral surface with longitudinal grooves of a depth H and a width W, and the hollow cylindrical metal raw materialis subjected to hot-extrusion.

Metal member to be cast-wrapped

A structure for mounting a bumper beam 2 extending transversely of a vehicle covered with a bumper face 6 and mounted to a chassis 3 through a support 4, in which the bumper beam 2 is formed into a hollow body made of high-tension steel, the front end of the support 4 extends forward beyond the rear portion of the bumper beam 2. Thus, when a large collision energy works on the lightweight bumper beam formed into a hollow body made of high-tension steel, the collision energy is quickly transferred to the vehicle chassis through the front end of the beam.

Vehicle bumper mounting structure

Growing community of inventors

Itami, Japan

Kouji Yamada