KR0131255B1 - A front side member assembly - Google Patents

Abstract

A front side member assembly coupled to both sides of a radiator support lower member assembly in front of a body frame and subjected to impact force in front of a vehicle collision; To absorb the impact force and promote the safety of the rider while maintaining the rigidity of the front side member assembly from the front impact of the vehicle; A front side inner member mounted to the radiator support lower member assembly provided at the front of the body frame; A front side outer member fixed to and coupled to the front side inner member, the front side outer member forming a shock absorber to absorb a front impact force of the vehicle; It is mounted inside the front side member, the reinforcing member is formed in the horizontal groove to increase the rigidity against the front impact force of the vehicle, the front side inner member and the front side outer member is fixed to the lower side coupled And a flange for absorbing the impact force against the front impact and increasing rigidity.

Description

Automotive Front Side Member Assemblies

1 is a simplified perspective view of a vehicle body frame according to the present invention.

Figure 2 (a) is a side view of a vehicle front side member assembly according to the present invention.

(b) is sectional drawing of the temporary wire of (a).

(c) is a cross-sectional view of the helix of (a).

Figure 3 (a) is a side view of a vehicle front side member assembly according to the prior art.

(b) is sectional drawing of the helix of (a).

[Industrial use]

The present invention relates to a vehicle body frame, and more particularly, to a vehicle front side member assembly for absorbing impact force at the front part during a front collision of the vehicle, and maintaining the rigidity of the rear body frame to promote the safety of the rider.

[Prior art]

In general, a vehicle is composed of a vehicle body and a chassis, the vehicle body is composed of a body frame forming a skeleton of the vehicle body and a panel coupled to the body frame to form a skeleton.

On both sides of the front of the body frame, the front side member assembly, which is subjected to an impact force in the front collision of the vehicle, is coupled to both ends of the radiator support lower member assembly.

This front side member assembly must maintain the stiffness and absorb the impact force against forward collisions.

(A) and (b) of FIG. 3 are side views of the vehicle front side member assembly according to the prior art, and reference numeral 51 denotes a front side outer member 51 (hereinafter referred to as an outer member).

Inside the outer member 51, a front side inner member 53 (hereinafter referred to as an inner member) is fixed and engaged.

In addition, the upper and lower parts of the outer member 51 and the inner member 53 fixed and coupled are provided with a flange 55 for absorbing shock and increasing rigidity, and they are formed in an upper and lower stepped form, and an inner member ( On the inner side of 53, a reinforcing member 57 is joined to increase rigidity.

In the front side member assembly configured as described above, the reinforcing member 57 applied to the rear part maintains the rigidity of the front side member assembly by resisting the front impact energy, and the outer member 51 and the inner member 53 of the front part. ) Is bent up and down, and the portion where the reinforcing member 57 is not attached absorbs the impact energy.

[Problem trying to solve the invention]

However, such a vehicle front side member assembly is provided with a plate-like reinforcing member that resists the front impact energy, so that the space to resist the impact is small, so that the body frame can not be maintained from crushing with sufficient rigidity; Since the outer member and the inner member are formed in a stepped manner in the vertical direction, the front impact force cannot be sufficiently reduced; The situation is insufficient in protecting the occupant from the front impact force.

The present invention has been invented to solve the above problems, and an object of the present invention is to absorb the impact energy while maintaining the rigidity of the front side member assembly from the front impact of the vehicle, thereby protecting the occupant from the front impact safely. It provides a vehicle front side member assembly.

[Means to solve the problem]

In order to realize this, the vehicle front side member assembly according to the present invention includes: a front side inner member mounted to a radiator support lower member assembly provided in front of a vehicle body frame; A front side outer member which is fixed and coupled to the front side inner member and forms a shock absorbing portion for absorbing the front impact force of the vehicle; A reinforcing member joined to the side walls of the front side inner member and the upper and lower ends thereof, and having a lateral groove for increasing rigidity against the front impact force of the vehicle; A flange formed at a lower side where the front side inner member and the front side outer member are fixed and coupled, and absorbing impact energy against a front impact and increasing rigidity; It includes.

The shock absorbing portion includes a groove formed longitudinally at the front end of the front side outer member to induce crushing of the front side member assembly.

In the vehicle front side member assembly according to the present invention configured as described above, the shock absorbing portion absorbs the impact energy while the longitudinal groove is crushed against the front impact force, and the reinforcing member is a groove in the transverse direction with respect to the front impact force. The increased working space keeps the increased stiffness resistant to large impact forces.

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

EXAMPLE

1 is a simplified perspective view of a vehicle body frame according to the present invention, wherein reference numeral 1 designates a front side member assembly 1.

The front side member assembly 1 is fixed and coupled to both sides of the radiator support lower member assembly 3 positioned in front of the vehicle body frame to receive impact energy in front of the vehicle.

FIG. 2 (a) is a side view of the vehicle front side member assembly 1 according to the present invention. Inside the inner member 5, a reinforcing member 7 for increasing the rigidity of the assembly 1 is attached, and the lower side thereof. The flange 9 is formed to increase the rigidity and absorb the impact force.

The upper surface to which the outer member 5 and the inner member 15 are fixed and coupled induces a gradual crushing of the front part from the front impact energy to increase the shock absorbing effect, and the rear part is a straight line to increase the rigidity that resists the impact. The front end portion of the outer member 5 includes a shock absorbing portion 11 that absorbs front impact energy.

The shock absorbing portion 11 absorbs the impact energy into an enlarged space capable of receiving the impact energy, and includes a longitudinal groove 13 which induces a dent of the front side member assembly 1 during a front collision of the vehicle. ) Is formed in plural, and the plurality of grooves 13 absorb stronger front impact energy while the front is crushed sequentially against the impact.

The longitudinal groove 13 can be formed in any one or more of the outer member 5 and the inner member 15, but in the present embodiment, as shown in FIG. 2B, the outer member It is formed in (5) to enter the inner member (15).

In addition, it is preferable that the gap of the groove 13 is wider in the front and denser toward the rear to increase the absorption of impact energy.

In addition, the protruding direction of the groove 13 may be formed to protrude inwardly as in (b) of FIG. 2, but may be protruded outwardly, and the inner side of the outer member 5 may have a sequential dent. More preferably, it protrudes outward.

The reinforcing member 7 may be formed in or out of at least one of the outer member 5 and the inner member 15, but in the present embodiment, the inner member 5 is inside for the convenience of manufacturing, and the impact It is attached to the back of the absorption part 11.

In addition, the reinforcing member 7 increases rigidity by increasing a space that resists impact energy, and may be used in various ways. ) And the front surface is in close contact with the side wall and the upper and lower end surfaces of the inner member 15.

The lateral groove 17 can be formed inside or outside the inner member 15, but in this embodiment, as shown in FIG. 2C, the contact area with the outside of the inner member 15 is shown. It is formed to protrude only inward to increase the.

As described above, in the vehicle front side member assembly according to the present invention, the shock absorbing portion 11 formed at the front of the outer member 5 in the front collision of the vehicle corresponds to the front impact energy with a wider working space.

As a result, the longitudinal grooves 13 formed in the shock absorbing part 11 are sequentially collapsed by receiving the impact energy received by the shock absorbing part 11.

At this time, the plurality of longitudinal grooves 13 induces the crushing of the front side member assembly 1 to absorb the impact force, thereby reducing the amount of indirect impact applied to the occupant instantaneously.

However, if the front side member assembly 1 is excessively crushed, the occupant cannot be structurally protected, so the front side member assembly 1 must maintain the proper rigidity of the rear part at the same time as the shock absorption of the front part.

Therefore, the upper surface of the straight line which fixes and couples the outer member 5 and the inner member 15 and the reinforcing member 7 act as a means for increasing the rigidity of the front side member assembly 1, in particular an impact. The lateral grooves 17, which increase the space of action of energy, generate rigidity that resists large forward impact forces, thereby protecting the occupants from structural risks that the body collapses and the engine room presses the occupants.

[Effects of the Invention]

As described above, the vehicle front side member assembly according to the present invention includes a shock absorbing part having a longitudinal groove formed at the front end of the outer member, and forms a straight upper surface on which the outer member and the inner member are fixed and coupled to each other. By mounting a reinforcing member having a groove in the transverse direction on the outside of the member; Longitudinal grooves crush, absorbing impact energy for forward impact, increasing lateral grooves' resistance to impact energy, and increasing the stiffness of the upper surface of the straight and fixed outer and inner members ; The safety of the rider can be secured from the shock generated from the front impact of the vehicle and the dent of the vehicle body.

Claims (4)

A front side inner member coupled to the radiator support lower member assembly provided at the front of the body frame; A front side outer member fixed to and coupled to the front side inner member, the front side outer member forming a shock absorber to absorb a front impact force of the vehicle; A reinforcement part mounted to the front side inner member and forming a groove in a lateral direction for increasing rigidity with respect to a front impact force of the vehicle; A flange formed at a lower side to which the front side inner member 15 and the front side outer member 5 are fixed and coupled, and absorbing impact force against front impact and increasing rigidity; Vehicle front side member assembly comprising a. The vehicle front side member assembly of claim 1, wherein the shock absorber includes a groove formed in a longitudinal direction at the front end of the front side outer member to induce crushing of the front side member assembly. The vehicle front side member assembly of claim 2, wherein the grooves formed in the shock absorbing part are formed at a wide interval in the front and at a narrow interval in the rear. The vehicle front side member assembly of claim 2, wherein the groove is alternately protruded from the surface of the outer member inward and outward.