Bumper assembly
AssigneeCosma Engineering Europe AG
InventorsMichael Blumel, Christian Hengst, Ernst Lindtner
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Abstract
A method of making a beam-box crash management system comprises forming a first shell (100a) from a first sheet metal blank by a hot forming process. The first shell has a high tensile strength beam portion (102a) and integrally formed there-with a first low yield strength crash box portion (104a) proximate a first end of the beam portion and second low yield strength crash box portion proximate a second end of the beam portion. The first shell also has an open face extending continuously along the beam portion and each of the first and second crash box portions (104a, 106a). A closing element (100b) is formed from a second sheet metal blank, and is fixedly secured adjacent to the open face of the first shell.
Claims5
A method of making a beam-box crash management system, comprising:
- forming a first shell from a first sheet metal blank by a hot forming process, the first shell having a high tensile strength beam portion and integrally formed therewith a first low yield strength crash box portion proximate a first end of the beam portion and a second low yield strength crash box portion proximate a second end of the beam portion, the first shell having an open face extending continuously along the beam portion and each of the first and second crash box portions;
- forming a closing element from a second sheet metal blank by a cold stamping process;
- and
- fixedly securing the closing element adjacent to the open face of the first shell to enclose the beam portion and each of the first and second crash box portions of the first shell.
Dependencies are inferred from the claim text.