Bumper beam for a vehicle

Patent metadata

Field	Value
Publication number	US-2019299888-A1
Application number	US-201816213711-A
Country	US
Kind code	A1
Filing date	Dec 7, 2018
Priority date	Mar 30, 2018
Publication date	Oct 3, 2019
Grant date	—

Abstract

A bumper beam for a vehicle is attached to a front or rear portion of the vehicle, includes a beam main body having a front surface opposite to a surface to be attached to the vehicle, the front surface being curved outwardly, and the beam main body having a C-shaped section opened outwardly toward the front surface, and stay portions formed on both sides of the beam main body, each of the stay portions having an opening at a rear surface thereof. The beam main body includes a fiber reinforced plastic.

First claim

What is claimed is:

1 . A bumper beam for a vehicle, attached to a front or rear portion of the vehicle, comprising:
a beam main body having a front surface opposite to a surface to be attached to a vehicle and curved outwardly, the beam main body having a C-shaped section being opened outwardly toward the front surface; and stay portions formed on both sides of the beam main body, and each having an opening at a rear surface thereof, wherein the beam main body includes a fiber reinforced plastic.

2 . The bumper beam for a vehicle of claim 1 , wherein the bumper beam further includes a horizontal rib portion disposed in parallel with the upper and lower walls of the beam main body portion at an inner side of the beam main body portion, vertical rib portions orthogonal to the horizontal rib portion and connecting upper and lower walls of the beam main body portion, and inclined rib portions connecting one of an upper wall and a lower wall of the beam main body portion, and the horizontal rib portion.

3 . The bumper beam for a vehicle of claim 2 , wherein the horizontal rib portion is made of a fiber reinforced plastic.

4 . The bumper beam for a vehicle of claim 1 , wherein each of the stay portions have an opening formed on the rear side thereof, and a beam receiving portion having a hollow interior.

5 . The bumper beam for a vehicle of claim 1 , wherein the side surface of the stay portions is formed in a structure having a H shaped section.

6 . The bumper beam for a vehicle of claim 1 , wherein both side surfaces of the beam body portion are formed with a straight inclined surface.

7 . The bumper beam for a vehicle of claim 1 , wherein the fiber reinforced plastic comprises a continuous fiber impregnated with a matrix resin,
wherein the specific gravity of the fiber reinforced plastic is 0.5 to 1.5, wherein the continuous fiber includes at least one of carbon fiber, glass fiber and polyamide fiber, and wherein the matrix resin includes at least one of epoxy resin, polyether ketone resin, polyether ether ketone resin, polyester resin, polyethylene resin, polypropylene resin, polyethylene terephthalate resin, polyamide resin, polycarbonate resin and polybutylene terephthalate resin.

8 . The bumper beam for a vehicle of claim 2 , wherein at least one of the stay portions, the vertical rib portions, and the inclined rib portions is formed of at least one of a fiber reinforced plastic and a thermoplastic resin composition, and
wherein the thermoplastic resin composition is formed by molding polypropylene, talc, mineral oil and rubber.

Assignees

• Hyundai Motor Co Ltd
• Lotte Chemical Corp
• Automobile Ind Ace
• Kia Motors Corp

Inventors

• Kim Hyun Kyung
• Cho Jeong Min
• Yoon Byungkyu
• Cho Taegbong
• Lee Jong Wook
• Kim Won Seock
• Lee Kyo Min
• Lee You Jung
• Hwang Yeun Hee

Classifications

• B60R19/03 Primary

  characterised by material, e.g. composite (B60R19/18 takes precedence) · CPC title

• B60R19/023

  Details · CPC title

• B60R2019/1806

  Structural beams therefor, e.g. shock-absorbing · CPC title

• B60R19/18 Primary

  {characterised by the cross-section;} Means within the bumper to absorb impact · CPC title

• B60R2019/1853

  of reinforced plastic material · CPC title