Impact absorption member structure for vehicle

Patent metadata

Field	Value
Publication number	US-2018257589-A1
Application number	US-201615760195-A
Country	US
Kind code	A1
Filing date	Nov 8, 2016
Priority date	Nov 20, 2015
Publication date	Sep 13, 2018
Grant date	—

Abstract

An impact absorbing member structure of a vehicle includes: a pair of left and right rear side frames; a pair of left and right crash cans containing a plurality of first carbon fibers arranged so as to continuously extend in a forward/rearward direction; and a bumper reinforcement attached to tip end portions of the pair of rear side frames through the pair of crash cans. Each of the crash cans is formed as an open-section member including: a side wall portion extending in the forward/rearward direction; and a tip end wall portion continuous with the side wall portion and including an attaching portion to which the bumper reinforcement is attached.

First claim

1 . An impact absorbing member structure of a vehicle,
the impact absorbing member structure comprising: a pair of left and right impact absorbing members arranged at a vehicle body forward/rearward direction tip end-side part of the vehicle and made of fiber-reinforced resin, the pair of left and right impact absorbing members each containing a plurality of reinforced fibers arranged so as to continuously extend in a forward/rearward direction; and a bumper reinforcement attached to tip end portions of the pair of impact absorbing members and extending in a vehicle width direction, wherein each of the impact absorbing members is formed as an open-section member including a tip end wall portion formed at a tip end portion of the impact absorbing member, the bumper reinforcement being attached to the tip end wall portion.

2 . The impact absorbing member structure according to claim 1 , wherein:
each of the impact absorbing members includes
a plurality of first reinforced fibers arranged so as to continuously extend in a vehicle body forward/rearward direction and constituting most of the reinforced fibers contained in the impact absorbing member and
a plurality of second reinforced fibers arranged so as to continuously extend in a direction intersecting with the direction in which the first reinforced fibers extend; and
in a vertical sectional view perpendicular to the forward/rearward direction, a plurality of curved portions are formed at each of the impact absorbing members.

3 . The impact absorbing member structure according to claim 2 , wherein the plurality of curved portions are formed to have a plurality of partial circular-arc shapes.

4 . The impact absorbing member structure according to claim 1 , wherein each of the impact absorbing members is formed such that an upper-lower width thereof decreases toward the tip end portion.

5 . The impact absorbing member structure according to claim 2 , wherein the plurality of second reinforced fibers are arranged at both thickness direction end vicinity parts of each of the pair of impact absorbing members.

6 . The impact absorbing member structure according to claim 2 , wherein each of the impact absorbing members is formed such that an upper-lower width thereof decreases toward the tip end portion.

7 . The impact absorbing member structure according to claim 3 , wherein each of the impact absorbing members is formed such that an upper-lower width thereof decreases toward the tip end portion.

Assignees

• Mazda Motor

Inventors

• Kawamura Chikara
• Shimanaka Tsuneki
• Takeshita Hiroaki
• Nishihara Tsuyoshi
• Kimura Takayuki
• Ishikura Kazutaka

Classifications

• B60R19/34 Primary

  destroyed upon impact, e.g. one-shot type · CPC title

• B60R19/03

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

• B62D21/152

  Front or rear frames · CPC title

• B60R2019/262

  with means to adjust or regulate the amount of energy to be absorbed · CPC title

• F16F7/003

  One-shot shock absorbers (using plastic deformation of members, e.g. using sacrificial, fibre-reinforced composite members F16F7/12) · CPC title