IMPACT ENERGY ABSORBING MEMBER AND FABRICATION METHOD THEREOF

• Main Authors: MURASE KENJI, NISHIGUCHI KATSUYA, YAMAMOTO KENICHI, KAMIOKA TOSHITSUGU
• Format: Patent
• Language: English
• Published: 18.02.2010
• Subjects: BLASTING; CASTING; CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS; LIGHTING; MEANS FOR DAMPING VIBRATION; MECHANICAL ENGINEERING; MOTOR VEHICLES; PERFORMING OPERATIONS; POWDER METALLURGY; SHOCK-ABSORBERS; SPRINGS; THERMAL INSULATION IN GENERAL; TRAILERS; TRANSPORTING; VEHICLES IN GENERAL; VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISEPROVIDED FOR; WEAPONS

PROBLEM TO BE SOLVED: To provide an impact energy absorbing member 1 superior in handling and capable of stably deforming a tublar body 2 in a tube axis Z direction without causing buckling deformation thereof. SOLUTION: The body 2 is formed integrally with split deformable parts 3 and boundary parts 4. Each boundary part 4 is umbrella-shaped to be inclined to one side or the other side in the tube axis Z direction toward the radial outside of the body 2. The two boundary parts 4 adjacent to each other in the tube axis Z direction are inclined to mutually opposite sides toward the radial outside of the body 2. Additionally, each boundary part 4 plastically deforms the two split deformable parts 3 sandwiching the boundary part 4 to mutually opposite sides in the radial direction of the body 2 concurrently with its compression and plastic deformation in the tube axis Z direction while accelerating the shearing deformation of the boundary-side ends of the two split deformable parts 3 sandwiching the boundary part to mutually opposite sides in the radial direction of the body 2 when a certain or greater compressing load is input to the body 2 in the tube axis Z direction. COPYRIGHT: (C)2010,JPO&INPIT