JP2500916Y2 - Guard bar mounting structure - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a guard bar mounting structure which covers the front surface of a vehicle body to protect the front or rear surface of the vehicle body and to improve fashionability.

[0002]

2. Description of the Related Art Conventionally, as a mounting structure of a guard bar provided at a front portion or a rear portion of a vehicle body, there is an actual construction of Sho 61-50051.
Those described in Japanese Patent Publication are known. This guard bar is provided to protect the engine and the radiator, and has a structure in which both ends of the guard bar are directly fixed to the vehicle body by brackets and bolts and nuts.

[0003]

However, the above-described conventional guard bar mounting structure has the following problems. That is, since the guard bar is directly fixed to the vehicle body, if an impact is input to the guard bar during a vehicle collision, the input is directly transmitted to the vehicle body and the vehicle body frame or the like is deformed. I will end up. And
If the damage extends not only to the guard bar but also to the vehicle body in this way, there is a problem that repairing the guard bar does not have to be merely a replacement, and the repair is time-consuming and costly.

The present invention has been made in view of the above-mentioned problems, and reduces the transmission of impact to the vehicle body at the time of impact input to the guard bar and improves the damage resistance of the vehicle body. The purpose is to provide a mounting structure.

[0005]

According to the present invention, a pipe frame member is horizontally mounted on a vehicle body, and both ends of a guard bar are fixed to the pipe frame member to achieve the above object.

That is, in the guard bar mounting structure of the present invention,
Is installed so as to cover the front or rear surface of the vehicle body.
The front gate type and side L type guard bar mounting structure
On the underside of the front or rear end of the vehicle body.
The pipe frame member is fixed to the vehicle bodyIn the vehicle width directionside
Framed, this pipe frame memberFixed to the car body of
Positions that are appropriately separated from both ends to the center of the vehicle body
In addition, both ends of the guard bar are fixed
And the means.

[0007]

[Function] When a shock input is applied to the guard bar due to a front or rear light collision, this input is transmitted from the guard bar.
Is transmitted to the pipe frame member , and in this pipe frame member , the rotation around the axis of the pipe frame member is performed.
It acts as a turning moment and the pipe frame member
Between the fixed position on both ends of the vehicle body and the guard bar fixed position on the center side of the fixed position, the shock is absorbed by being torsionally deformed within the range of elastic deformation like a torsion bar. Then, when the impact is removed, the pipe frame member is restored and the twist is eliminated, and the guard bar is also rotated to the original position. In this way, the twisting of the pipe frame member prevents the impact input to the vehicle body and prevents the vehicle body from being damaged.

Further, when the impact input to the guard bar becomes large, one or both of the guard bar and the pipe frame member will be plastically deformed, but this plastic deformation should prevent or alleviate the impact input to the vehicle body. If the impact input to the vehicle body can be completely prevented as in the former case, repairing can be done only by replacing the guard bar and the pipe frame member, while in the latter case, the vehicle body is impacted. When there is an input, the vehicle body is damaged, but the degree of the damage can be reduced.

[0009]

Embodiments of the present invention will be described with reference to the drawings.
In describing the embodiments, a front guard bar that protects the front surface of the vehicle body will be taken as an example.

First, the structure of the embodiment will be described with reference to FIG. 1 which is an exploded perspective view showing the mounting structure of the embodiment of the present invention and FIG. 2 which is a side view showing the structure of the embodiment. In FIG. 1, S denotes a skeletal member of the entire vehicle body, and as shown in the drawing, a support radiator core lower 3 is horizontally mounted on the lower surface of the front ends of the front side members 21 and 22 extending to the front end portion of the vehicle body. ing. The front side member 2
Lower surface of front end of 1 and 22 and support radiator core 3
Weld nuts 51, 52, 61,
62 is provided. Then, as shown in FIG. 2, the front surface of the skeleton member S is covered with a front bumper FB.

On the lower surface of the frame member S, a pipe frame member 4 is horizontally mounted. That is, as shown in FIGS. 1 and 2, brackets 71 and 72 are fixed to the left and right ends of the pipe frame member 4 by welding, and the bolts 8
1, 82, 83, 84 to the weld nuts 51, 5
The brackets 71,
72 is fixed to the frame member S, and both ends of the pipe frame member 4 are fixed to the frame member S. Further, fixing brackets 91, 92 are fixed to the pipe frame member 4 by welding at a position closer to the center of the vehicle body than both ends thereof in a state of protruding toward the front of the vehicle body.

The front guard bar 1 is fixed to the fixing brackets 91 and 92. That is, the front guard bar 1 is composed of a round pipe, and as shown in the figure,
The front gate shape is formed in a side L shape, and is arranged so as to cover the front surface of the vehicle body at a position in front of the vehicle with respect to the front bumper FB. Then, both ends of this front guard bar 1 are fastened and fixed to both brackets 91 and 92 with bolts 11.

Next, the operation of the collision with the wall 50 will be described with reference to FIGS. 3 and 4. At the time of collision, first, the front guard bar 1 collides with the wall 50, and at this time, the part of the front guard bar 1 that collides with the wall 50 is located above the pipe frame member 4, so that the front guard bar 1 is indicated by an arrow A. A moment that rotates in the direction is generated. As a result, the pipe frame member 4 is fixed to the skeleton members S at both ends, and the fixing brackets 91 and 92 for supporting the front guard bar 1 on the center side of the fixing positions.
A twist occurs between the position and the position, and this twist absorbs the energy of the collision.

Therefore, at the time of an extremely light collision, the twist of the pipe frame member 4 may be a twist deformation within the range of elastic deformation, and when the pipe frame member 4 is separated from the wall 50 after the collision, the pipe frame member 4 is restored in the direction of the arrow B. Therefore, all the impact at the time of collision is absorbed by the pipe frame member 4, and the front guard bar 1, the pipe frame member 4, and the frame member S are not damaged.

When the degree of collision increases, the pipe frame member 4 is plastically deformed beyond the elastic deformation region, and the front guard bar 1 is also plastically deformed. If all can be absorbed, damage to the skeleton member S side of the vehicle body will be avoided, and at the time of repair, it is sufficient to replace the front guard bar 1 and the pipe frame member 4, and the repair work is easy. In addition, the cost can be reduced. In addition, in this embodiment, the pipe frame member 4
And the front guard bar 1 are fixed by bolts 81,
82, 83, 84, 11 makes it very easy to replace them. Further, even if there is a large collision in which the impact of the collision cannot be completely absorbed by the plastic deformation of the front guard bar 1 and the pipe frame member 4 as described above, a part of the impact can be absorbed by these plastic deformation. Damage to the vehicle body side can be reduced as compared with the case where the member 4 is not provided. Although the embodiment has been described above with reference to the drawings, the specific configuration is not limited to this embodiment.For example, in the embodiment, the front guard bar mounting structure for protecting the front surface of the vehicle body is shown. It may be applied to the guard bar at the rear of the vehicle body. Further, although the pipe frame member is fixed to the vehicle body and the guard bar is fixed to the pipe frame member by the bolts in this embodiment, other fixing means such as welding may be used.

As described above, in the guard bar mounting structure of the present invention, the pipe frame member is horizontally mounted on the vehicle body, and the body frame fixing members at both ends of the pipe frame member are mounted.
Since the mounting structure is such that both ends of the guard bar are fixed at a position spaced from the fixed position to the center side of the vehicle body, in the case of a light collision, the shock input from the guard bar is absorbed by the torsional deformation within the elastic deformation range of the pipe frame member, Guard bar,
It is possible to prevent damage to the pipe frame member and the car body, reduce the labor and cost of repairs, and absorb the impact by plastic deformation of the pipe frame member even in the case of a more severe collision. By doing so, the effect of reducing damage to the vehicle body can be obtained.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing a guard bar mounting structure of an embodiment.

FIG. 2 is a side view showing the structure of the embodiment.

FIG. 3 is an explanatory diagram for explaining the operation of the embodiment structure.

FIG. 4 is an explanatory diagram for explaining the operation of the embodiment structure.

[Explanation of symbols]

 S Frame member (car body) 1 Front guard bar 4 Pipe frame member

Claims (1)

(57) [Scope of utility model registration request] 1. A mounting structure for a front gate type and a side L-shaped guard bar disposed so as to cover a front surface portion or a rear surface portion of a vehicle body, wherein a lower surface of a front end portion or a rear end portion of the vehicle body and both ends thereof are attached to the vehicle body. Both ends of the pipe frame member , which are fixed and laid horizontally in the vehicle width direction, are fixed to the vehicle body of this pipe frame member .
The guard bar mounting structure is characterized in that both ends of the guard bar are fixed at positions appropriately separated from each other toward the center of the vehicle body .