CN202518209U

CN202518209U - Energy absorber for automobile front bumper

Info

Publication number: CN202518209U
Application number: CN2011205544418U
Authority: CN
Inventors: 赵东辉; 王菊; 陈如意
Original assignee: Chongqing Changan Automobile Co Ltd
Current assignee: Chongqing Changan Automobile Co Ltd
Priority date: 2011-12-27
Filing date: 2011-12-27
Publication date: 2012-11-07
Anticipated expiration: 2021-12-27

Abstract

The utility model discloses an energy absorber for an automobile front bumper. The energy absorber comprises a front collision contact surface, an upper collision energy-absorbing surface and a lower collision energy-absorbing surface. The energy absorber is characterized in that the front collision contact surface, the upper collision energy-absorbing surface and the lower collision energy-absorbing surface are made of metal materials; the upper and lower collision energy-absorbing surfaces are respectively positioned on an upper side and a lower side of the front collision contact surface and are respectively connected with the front collision contact surface to from a whole; the upper collision energy-absorbing surface is in acute angle connection with the front collision contact surface; and the lower collision energy-absorbing surface is in obtuse angle connection with the front collision contact surface. According to the energy absorber disclosed by the utility model, a certain angle exists between the upper and lower collision energy-absorbing surfaces and the front collision contact surface of the energy absorber, so that a cross section of the energy absorber is of an inclined trapezoidal structure; the unstable shape of the inclined trapezoidal structure decides that the energy absorber easily deforms by compaction and absorbs collision energy, and thus the aim of reducing the injury to human legs caused by collision is reduced. Meanwhile, the energy absorber disclosed by the utility model is made of metal material, and thus the production and manufacture cost is reduced.

Description

A kind of automobile front beam energy absorption device

Technical field

The utility model relates to automobile component, is specifically related to a kind of automobile front beam energy absorption device.

Background technology

For satisfying pedestrains safety protection requirement, an ability endergonic device when automobile and pedestrian lower leg collision often need be installed on the automobile front beam.Present front bumper energy absorption device mainly adopts following dual mode:

(1) foam energy absorption device: as shown in Figure 1, it is the solid foam structure of rectangle or type rectangle that this energy absorption device adopts cross-sectional plane usually, and its length is general identical with front bumper, and this foam energy absorption device is buckled on the front bumper usually.In collision process, reach the effect of energy-absorbing through the compression of foam, but because the restriction of foam compression degree, foam just can't continue to compress energy-absorbing when being compressed to a certain degree after, again so this kind device can not utilize existing energy-absorbing space fully.

(2) plastics energy absorption device: it is rectangle or trapezoidal plastic thin wall structure that this energy absorption device adopts cross-sectional plane usually; And form by preceding, upper and lower three collision energy-absorbing faces; On upper and lower impingement area, establish the reduction hole; This kind plastics energy absorption device is general identical with front bumper length or slightly short, and is bonded on the front bumper through viscose glue.Like Fig. 2, Fig. 3, the plastics energy absorption device for existing certain vehicle shown in Figure 4, its A-A cross section is an isosceles trapezoid, and upper and lower collision energy-absorbing face and preceding collision contact surface all are 105 °, on upper and lower collision energy-absorbing face, is provided with rectangle reduction hole.In collision process, reach energy-absorbing effect through the consitutional distortion of preceding, upper and lower impingement area, this kind installs not pressurized shrinkage restriction, can make full use of the energy-absorbing space, but its productive costs is higher, and its performance is prone to temperature influence.

Summary of the invention

The utility model purpose provide a kind of cost lower, can the effective deformation energy-absorbing, reduce the automobile front beam energy absorption device of collision to the pedestrian lower leg injury.

The described a kind of automobile front beam energy absorption device of the utility model, is gone up collision energy-absorbing face and collision energy-absorbing face down at collision contact surface before comprising, it is characterized in that: collision contact surface and upper and lower collision energy-absorbing face adopt metallic material to process before described; Collide the upper and lower both sides of contact surface before upper and lower collision energy-absorbing face lays respectively at, and be connected as a single entity with preceding collision contact surface; Described go up is acute angle between collision energy-absorbing face and preceding collision contact surface and is connected, and following collision energy-absorbing face is connected with preceding collision contact surface in obtuse angle; The waist shape reduction hole that is parallel to each other is arranged on upper and lower collision energy-absorbing face uniformly at intervals.

Preferred scheme is: go up between collision energy-absorbing face and preceding collision contact surface to be acute angle be 70 °, be 135 ° in obtuse angle between following collision energy-absorbing face and preceding collision contact surface.Upper and lower collision energy-absorbing face outer rim outwards is bent to form welding edge.

The utility model is owing to exist certain angle between its upper and lower collision energy-absorbing face and preceding collision contact surface; Make its cross-sectional plane be inclined ladder shape structure; When receiving horizontal impact, this energy absorption device of the shakiness of inclined ladder shape structure setting decision is easy to produce compressive deformation, the absorbing impact energy.And because of be provided with waist shape reduction hole at upper and lower collision energy-absorbing face; The intensity of whole device has weakened; Quicken the surrender speed of metallic material; Thereby make the utility model can actv. the distortion energy-absorbing, and can crash-avoidance early stage, material yield brought excessively slowly to the too high problem of pedestrian lower leg impact acceleration peak value, arrived and reduced the purpose of collision the pedestrian lower leg injury.Because of the utility model adopts metallic material, also reduced manufacturing cost simultaneously.

Description of drawings

Fig. 1 is the foam energy absorption device application example block diagram of prior art;

Fig. 2 is the plastics energy absorption device application example block diagram of prior art;

Fig. 3 is the A-A section-drawing of Fig. 2;

Fig. 4 is an ellipse circled enlarged drawing among Fig. 2;

Fig. 5 is the block diagram of the described a kind of automobile front beam energy absorption device of the utility model;

Fig. 6 is the B-B section-drawing of Fig. 5;

Fig. 7 is the waist shape reduction hole birds-eye view of Fig. 5;

Fig. 8 is the application example block diagram of the described a kind of automobile front beam energy absorption device of the utility model.

The specific embodiment

Engaging accompanying drawing below does further to set forth in detail to the utility model:

Like Fig. 5, a kind of automobile front beam energy absorption device 1 shown in Figure 8; Collision contact surface 11 before comprising, go up collision energy-absorbing face 12 and collision energy-absorbing face 13 down, it is characterized in that: collision contact surface 11 adopts metallic materials to process with upper and lower collision energy-absorbing

face

12,13 before described; Collide the upper and lower both sides of contact surface 11 before upper and lower collision energy-absorbing

face

12,13 lays respectively at, and be connected as a single entity with preceding collision contact surface 11; Described upward collision energy-absorbing face 12 is acute angle with 11 of preceding collision contact surfaces and is connected, and following collision energy-absorbing face 13 is connected with preceding collision contact surface 11 in obtuse angle; As shown in Figure 7 have the waist shape reduction hole 14 that is parallel to each other uniformly at intervals on upper and lower collision energy-absorbing

face

12,13.

It is 70 ° that 11 institutes of upward collision energy-absorbing face 12 as shown in Figure 6 and preceding collision contact surface are acute angle, and 11 institutes of following collision energy-absorbing face 13 and preceding collision contact surface are 135 ° in obtuse angle.To go up collision energy-absorbing face 12, descend collision energy-absorbing face 13 outer rims outwards to be bent to form welding edge 15, realize the installation of the described automobile front beam energy absorption device of the utility model through the welding of welding edge and front bumper 4.

Claims

1. an automobile front beam energy absorption device (1); Collision contact surface (11) before comprising, go up collision energy-absorbing face (12) and collision energy-absorbing face (13) down, it is characterized in that: collision contact surface (11) is with last collision energy-absorbing face (12), collision energy-absorbing face (13) employing metallic material is processed down before described; Last collision energy-absorbing face (12), following collision energy-absorbing face (13) lay respectively at the upper and lower both sides of preceding collision contact surface (11), and are connected as a single entity with preceding collision contact surface (11); Described go up is acute angle between collision energy-absorbing face (12) and preceding collision contact surface (11) and is connected, and following collision energy-absorbing face (13) is connected with preceding collision contact surface (11) in obtuse angle; The waist shape reduction hole (14) that on last collision energy-absorbing face (12), following collision energy-absorbing face (13), is parallel to each other uniformly at intervals.

2. a kind of automobile front beam energy absorption device according to claim 1 (1); It is characterized in that: go up between collision energy-absorbing face (12) and preceding collision contact surface (11) to be acute angle be 70 °, be 135 ° in obtuse angle between following collision energy-absorbing face (13) and preceding collision contact surface (11).

3. a kind of automobile front beam energy absorption device according to claim 1 (1) is characterized in that: will go up collision energy-absorbing face (12), descend collision energy-absorbing face (13) outer rim outwards to be bent to form welding edge (15).