BUMPER UNIT OF VEHICLE AND METHOD FOR MANUFACTURING THE SAME

• US 20170028951A1
• Filed: 11/25/2015
• Published: 02/02/2017
• Est. Priority Date: 07/28/2015
• Status: Active Grant

• Current Assignee: Hyundai Motor Company (Hyundai Motor Group), Lotte Chemical Corporation
• Original Assignee: Hyundai Motor Company (Hyundai Motor Group), Lotte Chemical Corporation
• Inventors: Yong, Ji Ae, Lee, Myung Ho, Shin, Joong Hyun, Cho, Jeong Min, Lee, Jong Wook, Kim, Jung Tae
• Granted Patent: US 10,112,561 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: B60R 19/023 Details
• CPC Class Codes: B60R 19/03 characterised by material, e.g. composite B60R19/18 takes precedence
• CPC Class Codes: B60R 19/12 vertically spaced
• CPC Class Codes: B60R 19/18 characterised by the cross-section; Means within the bumper to absorb impact
• CPC Class Codes: B60R 19/44 Bumper guards
• CPC Class Codes: B60R 2019/186 Additional energy absorbing means supported on bumber beams, e.g. cellular structures or material

Abstract

A bumper unit of a vehicle includes a plurality of bumper beams arranged in a width direction of the vehicle, each of the bumper beams being coupled at both ends thereof to a vehicle body, a bumper reinforcement member configured as a molded synthetic-resin base, the base being formed with a plurality of through-holes in the width direction of the vehicle such that the bumper beams penetrate the base via the through-holes, and a strengthening band formed of reinforcement fiber tows, the strengthening band being configured to surround the exterior of the bumper reinforcement member.

Claims

1. A bumper unit of a vehicle, comprising:

a plurality of bumper beams arranged in a width direction of the vehicle, each of the bumper beams being coupled at both ends thereof to a vehicle body;

a bumper reinforcement member configured as a molded synthetic-resin base, the base being formed with a plurality of through-holes in the width direction of the vehicle such that the bumper beams penetrate the base via the through-holes; and

a strengthening band formed of reinforcement fiber tows, the strengthening band being configured to surround the exterior of the bumper reinforcement member.

2. The bumper unit according to claim 1, wherein the bumper reinforcement member is formed, in one surface thereof, with a plurality of recesses arranged in a lattice form.

3. The bumper unit according to claim 2, wherein the surface of the bumper reinforcement member, formed with the recesses, faces the vehicle body.

4. The bumper unit according to claim 1, wherein the bumper beams are formed of high-strength steel via hot stamping.

5. The bumper unit according to claim 1, wherein the bumper reinforcement member is formed via injection-molding on outer surfaces of the bumper beams in a state in which the bumper beams are in a mold.

6. The bumper unit according to claim 1, wherein the strengthening band is formed by winding the reinforcement fiber tows around the exterior of the bumper reinforcement member.

7. The bumper unit according to claim 1, wherein the strengthening band has the same width as that of the bumper reinforcement member so as to surround the exterior of the bumper reinforcement member.

8. The bumper unit according to claim 1, further comprising a coating layer molded using a synthetic resin so as to coat an outer surface of the strengthening band surrounding the bumper reinforcement member.

9. The bumper unit according to claim 8, wherein the coating layer is formed via injection-molding on the outer surface of the strengthening band in a state in which the bumper reinforcement member surrounded by the strengthening band is inserted into a mold.

10. The bumper unit according to claim 1, wherein the bumper reinforcement member is located at a central portion of the bumper beams.

11. A method for manufacturing a bumper unit of a vehicle, the method comprising the steps of:

seating a plurality of bumper beams in a mold;

injection-molding a bumper reinforcement member by injecting a synthetic resin into the mold in which the bumper beams have been inserted; and

surrounding a strengthening band, formed of reinforcement fiber tows, around the exterior of the molded synthetic-resin bumper reinforcement member.

12. The method according to claim 11, further comprising the steps of:

seating the bumper reinforcement member, surrounded by the strengthening band, in a mold; and

injection-molding a coating layer on an outer surface of the strengthening band by injecting a synthetic resin into the mold in which the bumper reinforcement member, surrounded by the strengthening band, has been inserted.