Method for manufacturing impact absorber for vehicle

A shock absorption and vehicle technology, applied in the direction of manufacturing tools, vehicle parts, vehicle safety arrangements, etc., can solve the problems of weight increase, increase the thickness of bumper reinforcement 1, etc., and achieve the reduction of tensile strength, small weight, and small thickness Effect

Inactive Publication Date: 2008-05-14
AISIN SEIKI KK +1
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

In JP2846983B, the high tensile strength steel plate needs to be made thicker to meet the required strength of the bumper reinforcement, which increases the thickness of the bumper reinforcement 1, thereby increasing its weight

Method used

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  • Method for manufacturing impact absorber for vehicle
  • Method for manufacturing impact absorber for vehicle
  • Method for manufacturing impact absorber for vehicle

Examples

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Embodiment Construction

[0019] 1 and 2 are a perspective view and a cross-sectional view respectively showing a bumper reinforcement 1 manufactured by a method of manufacturing a vehicle impact absorber of the present invention. The bumper reinforcement 1 is suitable for a bumper device mounted to the front of a vehicle for absorbing impact mainly applied from the front of the vehicle.

[0020] As shown in FIGS. 1 and 2, the bumper reinforcement 1 is made of a strip-shaped high-tensile-strength steel plate and made into a long hollow structure. The bumper reinforcement 1 includes: a front wall 11 serving as a receiving surface for a load applied from the front of a vehicle; walls 11 facing each other in parallel; a pair of upper walls 14, 15 connecting the upper rear wall 12 to the front wall 11; and a pair of lower walls 16, 17 connecting the lower rear wall 13 to the front wall 11, so that the bumper reinforcement 1 has a constant cross-sectional configuration resembling the letter B along its lon...

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Abstract

A method for manufacturing an impact absorber for a vehicle includes a first process for manufacturing a formed body having a constant cross-sectional configuration by performing roll forming on a metal sheet and a second process for manufacturing the impact absorber by performing an induction hardening treatment and a bend forming on the formed body after performing the first process.

Description

technical field [0001] The present invention generally relates to a method of manufacturing a vehicle impact absorber. Background technique [0002] Among related manufacturing methods of vehicle impact absorbers, for example, a method described in JP2846983B is known. According to the manufacturing method described in JP2846983B, the formed body has a constant cross-sectional configuration in its longitudinal direction by rolling and forming a high tensile strength steel plate having a tensile strength of 450 MPa or more and a thickness of less than 2.54 mm, and then by bending the formed The body is formed into an arc with a constant radius of curvature (sweep forming) along its longitudinal direction (in a direction perpendicular to the cross-section of the body) to manufacture a bumper reinforcement serving as a shock absorber. In this case, the bumper reinforcement (shaped body) shown in cross-section includes recesses in each case on the front wall and on the rear wal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/00B21H8/00C21D9/00B21D7/00B60R19/03
CPCB60R19/023B60R2019/1826B21C37/0803B21C37/155B21C37/157B21D5/086B21D53/88
Inventor 羽田真一北恭一
Owner AISIN SEIKI KK
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