Bracket-integrated double-layer door impact beam, apparatus and method for manufacturing the same
AssigneesHyundai Motor Company, Kia Motors Corporation, Seojin Industrial Co., Ltd.
InventorsYoun-Il Jung, Ho-Jung Jeong
Life of this patent
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Abstract
An apparatus for manufacturing a bracket-integrated double-layer door impact beam is provided. The apparatus includes a lower mold having a lower cavity formed with a base material molded to have a “U”-shaped cross section and a predetermined length. The base material is seated on the lower cavity. A lower electrode terminal is disposed in the lower mold to contact the base material. An upper mold has an upper cavity therein and is coupled with the lower mold to pressurize both end portions of the “U”-shaped cross section of the base material inward to form the base material with an “O”-shaped cross section. An upper electrode terminal is disposed in the upper mold to contact the base material.
Claims20
An apparatus for manufacturing a bracket-integrated double-layer door impact beam, comprising:
- a lower mold having a lower cavity formed with a base material molded to have a “U”-shaped cross section and a predetermined length, wherein the base material is seated on an inner surface of the lower cavity;
- a lower electrode terminal disposed in the lower mold to contact the base material electrically;
- an upper mold having an upper cavity formed therein and coupled with the lower mold to pressurize both end portions of the “U”-shaped cross section of the base material inward to form the base material to have an “O”-shaped cross section;
- and
- an upper electrode terminal disposed in the upper mold to contact the base material electrically,
- wherein the apparatus further includes a power supply device configured to be electrically connected to each of the upper electrode terminal and the lower electrode terminal.
A method for manufacturing a bracket-integrated double-layer door impact beam, comprising:
- preparing a base material in which a first steel plate and a second steel plate are stacked and bonded;
- primarily press-molding the base material to have a “U”-shaped cross section;
- secondarily press-molding the primarily press-molded base material to have an “O”-shaped cross section;
- and
- heat-treating the secondarily press-molded base material to increase strength of the first steel plate.
A bracket-integrated double-layer door impact beam installed on a door panel for cushioning an impact applied to the vehicle, comprising:
- an external pipe configured to have a predetermined length and a predetermined diameter and be made of a quenchable steel material;
- and
- a strength reinforcing member configured to have a body part with a half-pipe shape, wherein the strength reinforcing member is bonded to a lower inner circumference of the external pipe to reinforce strength of the external pipe,
- wherein bracket parts configured to fix the impact beam on the door panel are integrally formed with both end portions of the body part in a length direction of the body part, respectively, and
- wherein the strength of the external pipe is increased by heat treatment.
Dependencies are inferred from the claim text.