JPH07164984A - Bumper mounting structure - Google Patents

Abstract

PURPOSE:To provide a bumper mounting structure which is constituted to prevent the occurrence of the damage of a car body in a way that a bumper body is hardly collided with a car body during a mounting work as structure wherein the bumper body made of A metal is used and the side part of the bumper body is contained in a recessed part formed in the flank of a car body is employed. CONSTITUTION:A slider 3 is mounted on the inside of the side part 1b of a bumper body 1 made of a metal and meanwhile, a guide rail 5 is installed to the outside of a recessed part 4a in the flank of a car body in a state to extend longitudinally of the car body. The guide rail 5 is formed in such a curved shape that the front end side is lowered and the rear end side is raised and a slider 3 is attached in a state to be inserted in the guide rail 5.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a metal bumper mounting structure.

[0002]

2. Description of the Related Art Conventionally, as a mounting structure for a metal bumper, for example, a structure described in Japanese Utility Model Laid-Open No. 57-177859 is known. In this structure, two central portions of the bumper body are fixed to the chassis frame via stays, and side portions at both ends of the bumper are attached with a large gap between the side portions of the vehicle body.

[0003]

By the way, in recent years, the bumper body has a structure in which it is housed in a recess formed in the side surface of the vehicle body so that the surface of the side portion of the bumper body is substantially flush with the side surface of the vehicle body. A structure that is designed to give a sense of unity with the vehicle body is often used.

In such a structure, a bumper body made of resin is mainly used, and even if the bumper body and the vehicle body collide with each other during mounting work, the vehicle body is not damaged, but the bumper body is made of metal. When formed by
If the bumper body and the vehicle body collide with each other during installation work, the vehicle body will be damaged.

In this case, as in the prior art described in the above publication, when a large gap is set between the side portion of the bumper body and the side surface of the vehicle body, the mounting work is performed so as not to hit them. Although it is easier, with the structure in which the side portions are housed in the concave portion formed on the side surface of the vehicle body as described above, it is very difficult to perform the mounting work so as not to hit them. That is, in the structure in which the side portion is housed in the recess as described above, as shown in FIG. 5, the front end portion of the bumper body 02 is inserted from the front end side of the recess 01 of the vehicle body to perform a predetermined attachment. After it is placed in the position, it will be fixed to the vehicle body. In this case, in particular, when the gap between the step portion 04 formed at the upper end of the concave portion 01 and the upper surface of the side portion 03 is set to be small, they will not hit each other. It's hard not to work.

Further, in order to solve this problem, if a large gap is set between the step portion and the upper surface of the side portion in the mounted state, the sense of unity between the bumper body and the vehicle body will be weakened. The problem arises.

As in the structure described in Japanese Utility Model Laid-Open No. 5-5613, if a guide rail is attached to the vehicle body so as to guide the side portion of the bumper body during the mounting work, the bumper body as described above can be obtained. Although it is possible to avoid collision with the vehicle body, even with such a structure, if the gap between the upper surface of the side portion and the step portion is set to a small size, this small gap should be maintained. It is necessary to move the bumper body in parallel up to, and it is quite difficult to work without hitting both.

The present invention has been made by paying attention to the above-mentioned conventional problems, while adopting a structure in which a metal bumper body is used and a side portion of the bumper body is housed in a concave portion formed on a side surface of a vehicle body. An object of the present invention is to provide a mounting structure that prevents the bumper body from easily hitting the vehicle body during mounting work and prevents the vehicle body from being damaged.

[0009]

In order to achieve the above-mentioned object, a bumper mounting structure of the present invention has a center portion in which a metal bumper body is arranged on the front surface or the rear surface of a vehicle body,
It is composed of side parts extending from the left and right ends of the center part along the side surface of the vehicle body, and on the vehicle body side of the mounting position of the side portion, the surface of the side portion and the vehicle body side surface are substantially flush with each other. While accommodating the side portion, a concave portion having a stepped portion that abuts or approaches the upper surface of the side portion at the upper end is formed, and the inside of the side portion and the outside of the concave portion,
A slider is attached to one side, and a guide rail that engages with this slider in the vehicle width direction and slides and guides the slider in the vehicle front-rear direction is attached to extend in the vehicle front-rear direction, and the guide rail is When the bumper body is mounted on the vehicle body, it is formed in a shape in which the vehicle body front-rear end side is low, the vehicle body front-rear center side is high, and the shape changes vertically
The structure is such that the slider is inserted into the guide rail and the bumper body is attached to the vehicle body.

[0010]

When the bumper body is attached to the vehicle body, the bumper body is brought closer to the front-rear direction of the vehicle body from the front surface or the rear surface of the vehicle body, and the slider provided inside the side portion of the bumper body or in the concave portion on the side surface of the vehicle body is recessed or Insert it into the guide rail provided on the side.

At the time of this insertion, since the guide rail is formed in a shape in which the end of the vehicle body in the front-rear direction is low and the center in the vehicle front-rear direction is high while the bumper body is mounted on the vehicle body, the shape of the guide rail changes. It will be placed at a lower position than when finished.

From this state, when the bumper body is moved toward the mounting position in the front-rear direction of the vehicle body, the side portions move along the concave portions on the side surfaces, and the slider moves while being guided by the guide rails. As a result, the guide rail is gradually displaced upward based on the change in shape in the vertical direction.

Therefore, even if the vertical gap is set to be small between the side portion and the step at the upper end of the recess in the mounted state, it is not possible to move the front-back direction while maintaining this small gap. In addition, since the gap is gradually reduced from the state where the gap is kept wide, the bumper body is less likely to hit the vehicle body and is less likely to damage the vehicle body.

[0014]

Embodiments of the present invention will be described with reference to the drawings.

(Structure of Embodiment) FIG. 1 is an exploded perspective view showing a mounting structure of a front bumper to which the bumper mounting structure of the first embodiment of the present invention is applied. In FIG. 1, reference numeral 1 denotes a bumper body. The bumper body 1 is made of steel and is composed of a center portion 1a arranged on the front surface of the vehicle and side portions 1b extending from the left and right ends of the center portion 1a to the side surface of the vehicle body.

A stay 1c is provided inside the center portion 1a.
Is fixed. The stay 1c is fixed to the side member 2 on the vehicle body side by a bolt (not shown).

Further, inside the side portion 1b, as shown in FIG.
Alternatively, a bracket 1d is provided as shown in FIG.
The slider 3 is fixed to the bracket 1d. As shown in FIG. 2, this slider 3 has a bracket 1
the base 3a fixed to d and the cross section T from the base 3a.
It is composed of a neck portion 3b and a head portion 3c which are vertically provided.

On the other hand, in the lower portion of the fender 4 of the vehicle body, as shown in the drawing, a concave portion 4a is formed so that the surface of the side portion 1b and the surface of the fender 4 are flush with each other. A guide rail 5 is attached to the. A step portion 4b is provided on the upper end of the recess 4a, and the step portion 4b is formed so as to be at the same height as the lower edge on the front surface side of the vehicle body as shown in FIG. ing. Also,
As shown in FIG. 2, when the side portion 1b is attached to the vehicle body, the gap 6 between the upper surface of the side portion 1b and the step portion 4b is set to have an extremely small vertical dimension.

As shown in FIG. 3, the guide rail 5 includes a guide groove 5a for the head 3c of the slider 3 to slide, and upper and lower engaging pieces 5b for engaging the head 3c in the vehicle width direction. , 5b, and is formed to be curved so that the front end is lower than the rear end by the dimension L, and the dimension of the guide groove 5a in the vehicle width direction is larger than the rear end dimension b. The direction of the dimension a is narrowed. The dimension a is formed to be slightly larger than the thickness of the head portion 3c of the slider 3, and, of course, the dimension b.
Is formed to have a size sufficiently larger than the thickness of the head 3c. Further, the head 3c of the slider 3 is set so as to be attached to the guide rail 5 with a slight rearward sliding margin left when the bumper body 1 is attached.

(Operation of Embodiment) a) At the time of mounting When mounting the bumper body 1 on the vehicle body, the bumper body 1
From the lower front of the vehicle toward the car body, first,
The head 3c of the slider 3 attached to the side portion 1b is inserted into the guide groove 5a of the guide rail 5. At this time, since the width b of the front end of the guide groove 5a is formed wider than the thickness of the head 3c, the insertion work can be performed easily and there is some dimensional error on the bumper body 1 side. Can also be inserted.

Thus, when the head 3c of the slider 3 is inserted into the guide rail 5, the bumper body 1 is brought into a state of being supported by the vehicle body, and the force for supporting the bumper body 1 is reduced. Further, when the bumper body 1 is moved toward the rear of the vehicle body from this state, the bumper body 1 gradually moves upward in accordance with the guide by the guide rails 5, and the upper surface of the side portion 1b forms a gap 6 in the step portion 4b. And the upper edge of the center portion 1a is also close to the lower edge of the front surface of the vehicle body.

Thus, the upper surface of the side portion 1b and the step portion 4 are
When the bumper body 1 is attached in the state of being brought close to each other, the bumper body 1 is not moved to the rear of the vehicle while maintaining the state of being brought close to each other, but is gradually moved upward as it is moved backward by the guide of the guide rail 5. Therefore, the bumper body 1 does not hit and hurt the vehicle body.

Thus, when the bumper body 1 is moved backward to the predetermined mounting position with respect to the vehicle body, the center portion 1a
The stay 1c is fixed to the side member 2 with a bolt.

When an error occurs between the mounting position of the guide rail 5 and the mounting position of the slider 3 due to an error in the vehicle width direction dimension of the bumper body 1 and the vehicle width direction dimension of the vehicle body,
For example, by providing a shim between the guide rail 5 and the vehicle body and adjusting the thickness of this shim, the error can be absorbed.

As described above, in this embodiment, the side portion 1b is housed in the recess 4a so that the surface of the side portion 1b and the side surface of the vehicle body are substantially flush with each other, and the metal bumper is accommodated. Even when the structure for improving the feeling of unity between the main body 1 and the vehicle body is adopted, during the mounting work, as the bumper main body 1 is moved backward, the space between the side portion 1b and the stepped portion 4b at the upper end of the recess 2a is increased. The gap 6 becomes gradually smaller, and when it is finally moved rearward to the mounting position, the gap 6 has a predetermined size, so that the bumper body 1 is less likely to hit the vehicle body and the vehicle body is less likely to be damaged. .

Next, a second embodiment will be described. The second
In describing the embodiment, the front bumper will be taken as an example as in the first embodiment, and the same components as those in the first embodiment will be designated by the same reference numerals and the description thereof will be omitted. Only the differences will be described.

In this second embodiment, as shown in FIG.
The guide rail 25 is attached to the side portion 1b, and the recess 4a
This is an example in which the slider 3 is attached to the. The guide rail 25 is formed in a shape in which the rear side of the vehicle is arranged higher by the dimension L as in the first embodiment, while the guide groove is not shown in the drawing, but is the reverse of the first embodiment. The rear end is wider than the front end.

Therefore, when mounting the bumper body 1, the rear end of the guide rail 25 is aligned with the position of the slider 3 and the bumper body 1 is moved backward to move the guide rail 25 and insert the slider 3. Let At this time, since the rear end of the guide rail 25 is formed wide, insertion is easy. The subsequent operation is similar to that of the first embodiment.

Although the embodiment has been described above, the specific structure is not limited to this embodiment, and the present invention includes a design change and the like within a range not departing from the gist of the invention.

For example, in the embodiment, steel is shown as the metal material forming the bumper body 1, but other metal materials such as aluminum may be used.

[0031]

As described above, in the bumper mounting structure of the present invention, the slider is mounted on one of the inside of the side portion of the bumper body and the outside of the recess on the side surface of the vehicle body,
On the other hand, a guide rail that engages with this slider in the vehicle width direction and slides and guides the slider in the vehicle front-rear direction is attached by extending it in the vehicle front-rear direction. Since the structure is formed in a shape in which the end side in the front-rear direction is low and the center side in the front-rear direction of the vehicle is high and the shape changes vertically, the side parts are housed in the recesses so that the surface of the side part and the side surface of the car body are substantially flush. Therefore, even if a structure that improves the sense of unity between the metal bumper body and the vehicle body is adopted, when mounting the bumper body in the fore-and-aft direction, the gap between the side portion and the stepped portion at the upper end of the recess is Since the gap gradually becomes smaller, the bumper body is less likely to hit the vehicle body and damage the vehicle body.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing a bumper mounting structure of a first embodiment of the present invention.

FIG. 2 is a vertical sectional view of a portion of a fender of the first embodiment structure.

FIG. 3 is a perspective view showing a guide rail of the first embodiment structure.

FIG. 4 is a side view showing the structure of the second embodiment.

FIG. 5 is a cross-sectional view showing a main part of a conventional technique.

[Explanation of symbols]

 1 Bumper main body 1a Center part 1b Side part 3 Slider 4a Recessed part 4b Step part 5 Guide rail 25 Guide rail

Claims (1)

[Claims] 1. A metal bumper body comprises a center portion arranged on the front or rear surface of a vehicle body, and side portions extending from both left and right ends of the center portion along a side surface of the vehicle body. On the vehicle body side of the mounting position of the side portion, the side portion is housed so that the surface of the side portion and the side surface of the vehicle body are substantially flush with each other, and a step portion contacting or approaching the upper surface of the side portion is provided at the upper end. A concave portion is formed, and a slider is attached to one of the inside of the side portion and the outside of the concave portion, and the other is engaged with this slider in the vehicle width direction to slide and guide the slider in the vehicle longitudinal direction. The guide rail is attached so as to extend in the front-rear direction of the vehicle body, and the guide rail has a lower shape in the front-rear direction end side of the vehicle body when the bumper body is mounted on the vehicle body, and a higher shape in the vehicle body front-rear direction center side, thus changing the shape vertically. A bumper mounting structure having a shape, wherein the slider is inserted into a guide rail and a bumper body is mounted on a vehicle body.