HYBRID BUMPER BEAM FOR VEHICLE, MANUFACTURING METHOD THEREFOR AND BUMPER BEAM UNIT THEREOF

• US 20150015005A1
• Filed: 12/30/2013
• Published: 01/15/2015
• Est. Priority Date: 07/09/2013
• Status: Active Grant

• Current Assignee: Hyundai Motor Company (Hyundai Motor Group)
• Original Assignee: Hyundai Motor Company (Hyundai Motor Group)
• Inventors: SHIN, Joong Hyun
• Granted Patent: US 9,073,496 B2
• Time in Patent Office: Days
• US Class Current: 293/120
• CPC Class Codes: B29C 2045/14139 positioning inserts having a part extending into a positioning cavity outside the mould cavity
• CPC Class Codes: B29C 45/14065 Positioning or centering articles in the mould
• CPC Class Codes: B29C 45/14631 Coating reinforcements fibre reinforcements B29C45/0005
• CPC Class Codes: B29K 2105/12 of short lengths, e.g. chopped filaments, staple fibres or bristles
• CPC Class Codes: B29L 2031/3044 Bumpers
• CPC Class Codes: B60R 19/03 characterised by material, e.g. composite B60R19/18 takes precedence
• CPC Class Codes: B60R 19/18 characterised by the cross-section; Means within the bumper to absorb impact
• CPC Class Codes: B60R 19/24 Arrangements for mounting bumpers on vehicles
• CPC Class Codes: B60R 2019/1813 made of metal
• CPC Class Codes: B60R 2019/1853 of reinforced plastic material
• CPC Class Codes: B60R 2019/242 on two vertical sleeves, e.g. on energy absorber ends

Abstract

A hybrid bumper beam for a vehicle includes a beam body formed of a resin group material, and a reinforcement injection molded with the beam body as one unit in a state the reinforcement is inserted in the beam body in a length direction of the beam body and opposing ends of the reinforcement are exposed to an outside of the beam body for fastening to stays, respectively.

Claims

1. A hybrid bumper beam for a vehicle comprising:

a beam body formed of an injection-molded resin-group material; and

a reinforcement extending within the beam body, the reinforcement including an elongated member extending within the beam body along a length direction of the beam body having opposing ends protruding outside of the beam body for fastening to stays, respectively.

2. The hybrid bumper beam of claim 1, wherein the reinforcement includes:

a plurality of steel pipes inserted in the beam body, and

fastening plates coupled to the steel pipes at the opposing ends thereof as one unit exposed to a rear side of the beam body for fastening to the stays, respectively.

3. The hybrid bumper beam of claim 2, wherein the beam body is formed to have a fixed curvature in a length direction thereof, and the steel pipes are formed in conformity with the curvature of the beam body.

4. The hybrid bumper beam of claim 2, wherein the steel pipes are two in number, are pressed down before inserted in a mold and have tooling holes formed therein at fixed intervals for mounting positioning pins therein, respectively.

5. The hybrid bumper beam of claim 1, wherein the beam body is formed of a resin group material including PA6 and GF50.

6. A bumper beam unit for a vehicle comprising:

a bumper beam formed of an injection-molded resin-group material including a reinforcement having an elongated member extending within a beam body and having opposing ends protruding outside of the beam body;

stays fastened to the opposing ends of the reinforcement, respectively; and

mounting plates coupled to rear ends of the stays for assembling with a vehicle body, respectively.

7. The bumper beam unit of claim 6, wherein the reinforcement includes;

a plurality of steel pipes inserted in the beam body, and

fastening plates coupled to the steel pipes at the opposing ends thereof as one unit to be exposed to a rear side of the beam body for fastening with the stays, respectively.

8. The bumper beam unit of claim 7, wherein the beam body is formed to have a fixed curvature in a length direction thereof, and the steel pipes are formed in conformity with the curvature of the beam body.

9. The bumper beam unit of claim 7, wherein the steel pipes are two in number, are pressed down before inserted in a mold and have tooling holes formed therein at fixed intervals for mounting positioning pins therein, respectively.

10. The bumper beam unit of claim 6, wherein the beam body is formed of a resin group material including PA6 and GF50.

11. A method for manufacturing a bumper beam for a vehicle comprising:

forming an injection-molded bumper beam in situ around a reinforcement inserted in a mold, wherein the bumper beam includes a beam body formed of resin group material, wherein the reinforcement includes an elongated member extending within the beam body in a length direction of the beam body, and includes opposing ends extending outside of the beam body for respectively fastening to stays.

12. The method of claim 11, wherein the reinforcement is inserted in the mold after disposing a plurality of steel pipes in parallel with one another and respectively coupling fastening plates to opposing ends of the steel pipes as one unit.

13. The method of claim 12, wherein the steel pipes are inserted in the bumper beam, and

the fastening plates are exposed to a rear side of the bumper beam for fastening the stays thereto, respectively.

14. The method of claim 12, wherein the steel pipes are two in number, are pressed down before inserted in a mold and have tooling holes formed therein at fixed intervals for mounting positioning pins therein, respectively.

15. The method of claim 11, wherein the resin group material includes PA6 and GF50.