KR101189063B1

KR101189063B1 - Crash box in vehicle bumper system

Info

Publication number: KR101189063B1
Application number: KR20100138293A
Authority: KR
Inventors: 구도회; 이상제
Original assignee: 주식회사 성우하이텍
Priority date: 2010-12-29
Filing date: 2010-12-29
Publication date: 2012-10-10
Also published as: KR20120076228A

Abstract

The present invention is connected between the bumper beam and the side member to prevent the deformation of the side member by minimizing the impact energy transmitted to the vehicle body by absorbing the double distribution of shock energy generated during the front collision of the vehicle
A crash box for a vehicle connecting a side member of a vehicle and a bumper beam, comprising: a main body forming a polygonal hollow tube; And front and rear reinforcement members respectively mounted in a state in which a predetermined portion is inserted into the inner space of the main body so as to absorb the impact input from the outside from the front and the rear of the main body secondly. It provides a vehicle crash box comprising a.

Description

Crash box for vehicle {CRASH BOX IN VEHICLE BUMPER SYSTEM}

The present invention relates to a crash box for a vehicle, and more particularly, is connected between a bumper beam and a side member to minimize side impact energy transmitted to the vehicle body by absorbing and distributing a double impact energy generated during a front collision of the vehicle. It relates to a vehicle crash box to prevent the deformation of.

In general, a bumper system for a vehicle is to minimize the physical damage of the vehicle by elastically deforming at low speed collision of the vehicle, and absorbs the impact when colliding with another vehicle or a stationary body to promote the safety of the rider. At the same time, it is a shock absorber disposed in front and rear of the vehicle to minimize the deformation of the vehicle body.

As shown in FIG. 1, in the bumper system, the stays 103 are mounted on both rear sides of the bumper beams 101 which are basically disposed in the vehicle width direction at the front and rear of the vehicle, respectively, through the crash box 111. A bumper beam unit 105 fixed to the vehicle body side member 113, an energy absorber 107 disposed in front of the bumper beam 101 to absorb impact force, and the bumper beam 101 and energy absorber And a bumper cover 109 surrounding 107.

Here, the conventional crash box 111, as shown in Figure 2, is assembled through the front plate 115 to each stay 103 is welded and fixed to the rear both sides of the bumper beam 101, It is assembled to the side member 113 through the rear plate 117.

However, the conventional crash box 111 as described above is good in terms of absorbing the impact energy so as to minimize the damage to the vehicle structure while absorbing the impact during low-speed collision, during the development process for safety and lightweight of the bumper in recent years. However, in the case of a collision at a medium speed or more, there is a risk of damage to the vehicle body due to excessive amount of sliding, and in the case of collapse due to a frontal collision, the collapse direction is irregular, and the dispersion absorbency of the impact energy is reduced, thereby reducing the collision absorption performance. have.

Therefore, the present invention has been invented to solve the problems described above, the problem to be solved by the present invention is connected between the bumper beam and the side member to absorb and absorb the impact energy generated during the front collision of the vehicle in a double It is to provide a crash box for a vehicle that minimizes the impact energy transmitted to the vehicle body to prevent deformation of the side member.

Vehicle crash box according to an embodiment of the present invention for achieving this object in the vehicle crash box connecting the bumper beam and the side member of the vehicle, the main body to form a hollow hollow tube; And front and rear reinforcement members respectively mounted in a state in which a predetermined portion is inserted into the inner space of the main body so as to absorb the impact input from the outside from the front and the rear of the main body secondly. It includes.

The front and rear reinforcement members are connected to the bumper beams and the side members, and the front and rear flanges have holes formed in the center thereof. And bent and integrally formed from the holes of the flange portion corresponding to the main body, and include front and rear insertion portions inserted into the inner space of the main body.

The main body is characterized in that formed in a square shape.

The front and rear insertion portions are formed in a rectangular cup shape corresponding to the main body.

The main body is separated into an inner panel and an outer panel, characterized in that coupled to each other.

The inner and outer panels are characterized in that the shape is formed in the "c" shape.

According to the crash box for a vehicle according to the embodiment of the present invention as described above, connected between the bumper beam and the side member to minimize the impact energy transmitted to the vehicle body by absorbing the impact energy generated during the front collision of the vehicle to double. It is effective in preventing deformation of the side member.

In addition, after the front collision of the vehicle, the impact energy generated is absorbed primarily as the main body collapses, and then absorbed by sequentially dispersing the impact energy as the front and rear reinforcement members are collapsed in a second contact state. By doing so, there is also an effect of improving the collision absorption performance and improving the marketability of the overall bumper system.

In addition, the front and rear reinforcement members are integrally formed so that they can be directly connected to the bumper beam and the side member without a separate mounting flange, thereby simplifying components and reducing manufacturing costs.

1 is an exploded perspective view of a general vehicle bumper.
2 is a perspective view of a vehicle bumper beam unit to which a vehicle crash box according to the prior art is applied.
3 is a perspective view of a vehicle crash box according to an embodiment of the present invention.
4 is an exploded perspective view of a vehicle crash box according to an embodiment of the present invention.
5 is a step-by-step operating state diagram of a vehicle crash box according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

It is to be understood that both the foregoing general description and the following detailed description of the present invention are exemplary and explanatory only and are not restrictive of the invention, It should be understood that various equivalents and modifications may be present.

3 is a perspective view of a vehicle crash box according to an embodiment of the present invention, Figure 4 is an exploded perspective view of a vehicle crash box according to an embodiment of the present invention.

Referring to the drawings, the vehicle crash box 1 according to an exemplary embodiment of the present invention is to minimize the impact energy transmitted to the vehicle body by absorbing the impact energy generated in the front collision of the vehicle to the double side member (3) ) To prevent deformation.

The vehicle crash box 1 is connected between the bumper beam 3 and the side member 5 as in the prior art to absorb the impact energy generated during the collision of the vehicle itself to perform the above function.

To this end, the vehicle crash box 1 according to an exemplary embodiment of the present invention, as shown in Figures 3 and 4, including the main body 10 and the front, rear reinforcement member (20, 30) If it is configured in more detail for each configuration as follows.

First, the main body 10 is formed of a polygonal hollow tube.

The main body 10 is configured to be separated into the inner panel 11 and the outer panel 12 are coupled to each other.

Here, the inner and outer panels 11 and 13 are formed in the shape of the letter "C" can be coupled to each other by welding, accordingly, the main body 10 has a rectangular shape as a whole Is formed.

Meanwhile, in the present embodiment, the main body 10 is divided into inner and outer panels 11 and 13 having a “c” shape, and is coupled to each other to form a rectangular shape. The shape of the main body 10 is not limited thereto, and the main body 10 may be changed to a polygon such as a pentagon or a hexagon.

In addition, the front and rear reinforcement members 20 and 30 are partially inserted into the inner space formed by the main body 10 so as to secondarily absorb the shock input from the outside from the front and rear of the main body 10. Mounted in a state of being connected to the bumper beams 3 and the side members 5, respectively.

Here, the front and rear reinforcement members 20 and 30 are connected to the bumper beams 3 and the side members 5, and the front and rear flange portions 21 and 31 in which holes 22 and 32 are formed in the center thereof. ) And the front and rear inserts which are integrally bent from the holes 22 and 32 of the flange portions 21 and 31 corresponding to the main body 10 and are inserted into the inner space of the main body 10. It consists of parts 23 and 33.

Here, the front and rear insertion portions 23 and 33 may be formed in a square cup shape corresponding to the main body 10.

That is, the front and rear reinforcement members 20 and 30 configured as described above may be formed integrally bent to the front and rear flange portions 21 and 31, respectively, through the front and rear insertion portions 23 and 33. It is fixed in the state of being inserted into the inner space of the front and rear of the body 10, respectively.

Hereinafter, the operation and operation of the vehicle crash box 1 according to the embodiment of the present invention configured as described above will be described in detail.

5 is a step-by-step operating state diagram of a vehicle crash box according to an embodiment of the present invention.

First, the separated inner and outer panels 11 and 13 are joined to each other by welding to form the main body 10, and then the front and rear inserting portions 23, before and after the main body 10. 33) is inserted, respectively, the front and rear reinforcing members (20, 30) is coupled to the main body 10 to complete the assembly.

Then, the crash box 1 is assembled, the bumper beam (3) through the flanges 23, 33 of the front, rear reinforcing members (20, 30), as shown in Figure 5 (S1). ) And the side members 5 are respectively connected to complete the mounting on the vehicle body.

In this state, when an impact force is generated from the outside in front of the bumper beam 3, as shown in (S2) of FIG. 5, the inside of the main body 10 by the impact energy transmitted from the bumper beam (3) As the outer panels 11 and 13 are first collapsed, impact energy is primarily absorbed.

When the impact energy is continuously transmitted in such a state and the front and rear inserting portions 23 and 33 are in contact with each other, the front and rear reinforcing members 20 and 30 are formed as shown in (S3) of FIG. 5. Each end of the front and rear inserting portions 23 and 33 collapses in contact with each other, thereby absorbing the impact energy secondarily.

Here, the main body 10 is further collapsed as each insertion portion 23, 33 of the front and rear reinforcing members 20 and 30 is collapsed, so that the shock absorbing is made, it is generated from the front The impact energy is absorbed by dispersing the main body 10 and the front and rear inserts 23 and 33 in duplicate, thereby absorbing the impact energy efficiently and absorbing the impact of the crash box 1. This can greatly improve performance.

The improvement of the collision performance minimizes the damage to the main parts of the vehicle at the time of low speed collision of the vehicle, and in the event of an accident, it is possible to prevent passengers from deforming the side member 5 at the same time.

Therefore, when applying the vehicle crash box 1 according to the embodiment of the present invention configured as described above, the impact energy generated when the front collision of the vehicle is connected between the bumper beam (3) and the side member (5) It is possible to prevent the deformation of the side member (5) by minimizing the impact energy delivered to the vehicle body by dispersing and absorbing the double.

In addition, after the front impact of the vehicle absorbs the generated impact energy as the primary body 10 collapses first, and then absorbs the secondary reinforcement while the front and rear reinforcing members 20, 30 collapsed in contact with each other, By sequentially dispersing and absorbing the impact energy, the impact absorption performance can be improved and the overall marketability of the bumper system can be improved.

In addition, the front and rear reinforcing members 20 and 30, which are integrally formed, can be directly connected to the bumper beam 3 and the side member 5 without additional mounting flanges, thereby simplifying components and reducing manufacturing costs. Can be.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. It will be understood that various modifications and changes may be made without departing from the scope of the appended claims.

1: Crash Box 3: Bumper Beam
5: side member 10: main body
11 inner panel 13 outer panel
20: front reinforcing member 21: front flange
22, 32: hole 23: front insertion portion
30: rear reinforcement member 31: rear flange
33: rear insertion

Claims

In the vehicle crash box that connects the bumper beam and the side member of the vehicle,
A main body forming a polygonal hollow tube; And
Front and rear reinforcement members respectively mounted in a state in which a predetermined portion is inserted into the inner space of the main body so as to absorb the impact input from the outside from the front and the rear of the main body secondly, and connected to the bumper beam and the side member, respectively;
Vehicle crash box comprising a.

The method of claim 1,
The front and rear reinforcement member
A front flange part connected to the bumper beam and the side member and having a hole formed in a center thereof; And
A front and rear insertion part which is integrally bent from the hole of the flange part corresponding to the main body and is inserted into an inner space of the main body;
Vehicle crash box, characterized in that consisting of.

The method of claim 2,
The main body is a vehicle crash box, characterized in that formed in a square shape.

The method of claim 3,
The front and rear insertion portion
Vehicle crash box, characterized in that formed in a square cup shape corresponding to the main body.

The method of claim 1,
The main body
Vehicle crash box, characterized in that the inner panel and the outer panel separated from each other.

The method of claim 5,
The inner and outer panels
The crash box for a vehicle, characterized in that the shape is formed in the "c" shape.

In the vehicle crash box that connects the bumper beam and the side member of the vehicle,
The main body is separated into an inner panel and an outer panel, and are mutually coupled to form a polygonal hollow tube,
Before and after the front and rear inserting portion is integrally formed at the end of the front and rear inserting portion and the front and rear inserting portion to be inserted into the inner space of the main body so as to absorb the impact input from the outside from the front and rear of the main body secondary Front and rear reinforcement members respectively connected to the bumper beam and the side member through a flange portion.
Vehicle crash box comprising a.

The method of claim 7, wherein
The front and rear insertion portion
The crash box for a vehicle, wherein the front and rear flanges are integrally bent from a hole formed in the center and are formed in a cup shape.