US 12,479,020 B2
Method for manufacturing reinforcement bar of vehicle bumper
Chun Lung Chao, Kaohsiung (TW)
Assigned to SA. TAI-H INDUSTRIAL CO., LTD., Kaohsiung (TW)
Filed by SA. TAI-H INDUSTRIAL CO., LTD., Kaohsiung (TW)
Filed on Apr. 1, 2024, as Appl. No. 18/623,077.
Claims priority of application No. 112115148 (TW), filed on Apr. 24, 2023.
Prior Publication US 2024/0351091 A1, Oct. 24, 2024
Int. Cl. B21D 53/88 (2006.01); B60R 19/02 (2006.01)
CPC B21D 53/88 (2013.01) [B60R 19/023 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A method for manufacturing a reinforcement bar of a vehicle bumper, comprising:
(a) providing a metal plate, wherein the metal plate includes a first portion, a first connecting section, a second portion, a second connecting section and an intermediate portion, wherein the first connecting section connects the first portion and the intermediate portion, and the second connecting section connects the second portion and the intermediate portion;
(b) bending the first connecting section, the second connecting section and an entirety of the first portion, wherein the entirety of the first portion is curved and has a single first radius of curvature, and a curvature of the first connecting section is continuous with the curvature of the entirety of first portion;
(c) releasing an external force acting on the entirety of the first portion, so that the entirety of the first portion springs back;
(d) bending the first portion and the second portion so that a section of the first portion is adjacent to a first surface of the intermediate portion, and a section of the second portion is adjacent to a second surface of the intermediate portion; and
(e) attaching the section of the first portion to the first surface of the intermediate portion, and attaching the section of the second portion to the second surface of the intermediate portion.