COLLISION ENERGY ABSORBING STEEL PIPE AND METHOD FOR MANUFACTURING THE SAME
PROBLEM TO BE SOLVED: To provide a novel collision energy absorbing steel pipe exhibiting a sufficient collision energy absorbing characteristic and capable of coping even with an installation space of a deformed cross section, and to provide a method for manufacturing the same. SOLUTION: This colli...
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| creator | NAKAMURA HIDEYUKI ANAI ISAO FUKUSHI TAKASATO |
| description | PROBLEM TO BE SOLVED: To provide a novel collision energy absorbing steel pipe exhibiting a sufficient collision energy absorbing characteristic and capable of coping even with an installation space of a deformed cross section, and to provide a method for manufacturing the same. SOLUTION: This collision energy absorbing steel pipe has a multiple tube structure for inserting a plurality of inside steel pipes 2 inside an outside steel pipe 1, and the outside steel pipe 1 is press-fitted to an outer peripheral surface of the inside steel pipes 2 by drawing. Among the inner peripheral length of the outside steel pipe 1, the sum of the noncontact length with the inside steel pipes 2 is 20% or less of the inner peripheral length. The inside steel pipes 2 may be a cross-sectional circular steel pipe, and may also be a cross-sectional non-circular deformed steel pipe, and are suitable for a bumper and a door impact beam of an automobile. COPYRIGHT: (C)2010,JPO&INPIT |
| format | Patent |
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SOLUTION: This collision energy absorbing steel pipe has a multiple tube structure for inserting a plurality of inside steel pipes 2 inside an outside steel pipe 1, and the outside steel pipe 1 is press-fitted to an outer peripheral surface of the inside steel pipes 2 by drawing. Among the inner peripheral length of the outside steel pipe 1, the sum of the noncontact length with the inside steel pipes 2 is 20% or less of the inner peripheral length. The inside steel pipes 2 may be a cross-sectional circular steel pipe, and may also be a cross-sectional non-circular deformed steel pipe, and are suitable for a bumper and a door impact beam of an automobile. 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SOLUTION: This collision energy absorbing steel pipe has a multiple tube structure for inserting a plurality of inside steel pipes 2 inside an outside steel pipe 1, and the outside steel pipe 1 is press-fitted to an outer peripheral surface of the inside steel pipes 2 by drawing. Among the inner peripheral length of the outside steel pipe 1, the sum of the noncontact length with the inside steel pipes 2 is 20% or less of the inner peripheral length. The inside steel pipes 2 may be a cross-sectional circular steel pipe, and may also be a cross-sectional non-circular deformed steel pipe, and are suitable for a bumper and a door impact beam of an automobile. 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SOLUTION: This collision energy absorbing steel pipe has a multiple tube structure for inserting a plurality of inside steel pipes 2 inside an outside steel pipe 1, and the outside steel pipe 1 is press-fitted to an outer peripheral surface of the inside steel pipes 2 by drawing. Among the inner peripheral length of the outside steel pipe 1, the sum of the noncontact length with the inside steel pipes 2 is 20% or less of the inner peripheral length. The inside steel pipes 2 may be a cross-sectional circular steel pipe, and may also be a cross-sectional non-circular deformed steel pipe, and are suitable for a bumper and a door impact beam of an automobile. COPYRIGHT: (C)2010,JPO&INPIT</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | BLASTING ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING LIGHTING MEANS FOR DAMPING VIBRATION MECHANICAL ENGINEERING PERFORMING OPERATIONS REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FORVEHICLES SHOCK-ABSORBERS SPRINGS THERMAL INSULATION IN GENERAL TRANSPORTING VEHICLES IN GENERAL VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISEPROVIDED FOR WEAPONS WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILARDEVICES FOR VEHICLES |
| title | COLLISION ENERGY ABSORBING STEEL PIPE AND METHOD FOR MANUFACTURING THE SAME |
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