JP3350603B2 - Vehicle bumper step mounting structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for mounting a bumper step for a vehicle, and more particularly to a structure for mounting a bolt for mounting the bumper step on the bumper.

[0002]

2. Description of the Related Art As a conventional mounting structure for a bumper step for a vehicle, there is one shown in FIGS. 6 and 7 (see Japanese Utility Model Laid-Open No. 3-83139). In this device, a bumper step 2 made of resin is supported on an upper surface of a bumper 1, and screws 3 and bolts are inserted into the bumper step 2 and the plurality of mounting holes 2a, 1a of the bumper 1 from the upper surface side of the bumper step 2, respectively. On the inner surface side of the bumper 1, a nut 4 is fitted to each screw 3 or bolt .

[0003]

However, in such a conventional mounting structure for a bumper step for a vehicle, the heads of the screws 3 and the bolts are exposed on the upper surface of the bumper step 2, so that the appearance is poor. Further, rainwater or the like is easily applied to the screw 3 or the bolt, and rust of the screw 3 or the bolt is remarkably generated.

On the other hand, there is a type in which a screw or a bolt is embedded in the bumper step 2. However, in this case, when the resin bumper step contracts or expands or slips due to the influence of heat, shrinkage or shrinkage occurs. There is a problem that the bumper step is deformed because escape of the bumper step during expansion and sliding is prevented by the bolt, that is, the bumper step does not escape during contraction, expansion and sliding.

SUMMARY OF THE INVENTION In view of the above-mentioned conventional problems, the present invention has been made to improve the mounting structure of a bolt in a mounting structure of a bumper step for a vehicle, thereby improving the appearance and deforming the bumper step due to the influence of heat. And the like.

[0006]

According to a first aspect of the present invention, there is provided a structure in which a vehicle bumper step is attached to a bumper with bolts and nuts.
A substantially box-shaped bolt holding portion is provided on the mounting surface side of the bumper step to the bumper, and the bolt holding portion is capable of sliding a rectangular plate-shaped bolt head so that a bolt shaft portion extends substantially at a right angle. A holding groove for holding, and a substantially oval-shaped through hole for fitting a circular plate formed between the bolt head and the shaft while projecting the bolt shaft from the holding groove. A bolt head and a circular shape formed by opening a part of the holding groove toward the side of the bumper step, when the bolt is attached to and detached from the holding groove.
The entrance / exit portion of the plate portion and the passage groove portion of the bolt shaft portion at the time of attaching and detaching the bolt to the holding groove portion formed by opening a part of the through hole portion toward the side of the bumper step. Configuration.

[0007]

According to the first aspect of the present invention, when the bumper step is mounted on the bumper, the bolt is held by each bolt holding portion provided on the mounting surface of the bumper step to the bumper. In this case, the bolt head and the circular plate part are inserted into the holding groove from the entrance and exit of the bolt holding part. At this time, the bolt shaft portion is inserted into the through hole portion through the passage groove portion , and the circular plate portion is fitted into the through hole portion.
Is done .

The bumper steps holding the bolts are set on the upper surface of the bumper, and the bolt shafts of the respective bolt holding portions are inserted through the bumpers so as to project from the inner surface of the bumper. A nut is fitted to a bolt shaft protruding from the inner surface of the bumper, and the bumper step is fixedly attached to the bumper by tightening the nut. In this manner, a substantially box-shaped bolt holding portion is provided on the mounting surface of the bumper step to the bumper, and the bumper step is mounted on the bumper by a bolt and a nut whose head is slidably held by the bolt holding portion. Therefore, the head of the bolt is not exposed on the upper surface of the bumper step, and the appearance is good. In addition, rainwater or the like is less likely to be applied to the bolt, and generation of rust on the bolt can be suppressed.

Further, since the bolt head is slidably held without being fixed to the bolt holding portion, even when the resin bumper step contracts, expands or slips due to the influence of heat, This contraction, expansion, and slippage are absorbed by the slide structure between the bolt head and the holding groove,
Since the escape of the bumper step causing contraction, expansion, and slippage is not prevented by the bolt, it is possible to prevent the bumper step from being deformed.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the accompanying drawings. 1 to 5, a resin bumper step 10 made of resin is attached to a bumper 13 made of SS by a plurality of bolts 11 and nuts 12. Bolt 11
Is a rectangular plate-shaped bolt head 11b and the bolt head 11
b, a circular plate portion 11c formed at the center of one surface;
A bolt shaft 11a projecting from the circular plate 11c;
It is composed of The bumper step 10 is formed to be long along the longitudinal direction of the upper surface of the bumper 13, the upper surface is formed as a flat surface, and the lower surface is formed as a curved surface along the curved shape of the upper surface of the bumper 13.

A plurality of substantially box-shaped bolt holding portions 14 are integrally formed at predetermined intervals on the lower surface of the bumper step 10, that is, on the side of the mounting surface to the bumper 13. Each bolt holding portion 14 has a holding groove 14a for slidably holding the bolt head 11b so that the bolt shaft 11a extends substantially at a right angle, and the bolt shaft 11a projects from the holding groove 14a . Circular plate part 1 of bolt 11
1c, and a part of the holding groove 14a is opened by opening a part of the holding groove 14a toward the side of the bumper step 10, so that the bolt 11 is attached to and detached from the holding groove 14a. Bolt head 11b and round
A bolt shaft formed by opening and closing the entrance / exit portion 14c of the plate portion 11c and a part of the through-hole portion 14b toward the side of the bumper step 10 to attach and detach the bolt 11 to / from the holding groove 14a. A passage groove 14d of 11a is formed.

In this case, each of the bolt holding portions 14 is formed so as to cover three walls 14e rising substantially at right angles from the lower surface of the bumper step 10 and an upper surface opening of a substantially box portion composed of these walls 14e. It is composed of a wall portion 14f, between the bumper step 10 the lower surface, bumpers stearate
Rectangular holding groove 1 opened to the side
4a is formed. The opened portion of the holding groove 14a is the entrance 1 of the bolt head 11b and the circular plate 11c.
4c. A substantially elliptical through hole 14b is formed in the wall 14f. Further, the wall portion 14f
A notch is formed in a portion corresponding to the entrance / exit portion 14c , and the notch forms a passage groove 14d for the bolt shaft portion 11a .

In such a configuration, the bumper step 1
In the case where 0 is attached to the bumper 13, the following is performed.

That is, the bolts 11 are held by the respective bolt holding portions 14 provided on the lower surface of the bumper step 10.
In this case, the bolt head 11b and the circular plate portion 11c are moved from the entrance / exit portion 14c of the bolt holding portion 14 to the holding groove portion 14a.
Insert inside. At this time, the bolt shaft portion 11a is inserted into the through hole 14b through the passage groove 14d, a circular plate portion 11c is fitted into the through hole 14b.

The bumper step 10 holding the bolts 11 is set on the upper surface of the bumper 13, and the bolt shaft portions 11 a of the respective bolt holding portions 14 are inserted into the respective bolt insertion holes 13 a formed in the bumper 13, and 13 from the inner surface side. The nut 12 is fitted to the bolt shaft portion 11a protruding from the inner side of the bumper 13, and the nut 1
By the tightening of 2, the bumper step 10 is fixedly attached to the bumper 13.

According to the bumper step mounting structure having such a configuration, a substantially box-shaped bolt holding portion 14 is provided on the mounting surface of the bumper step 10 to the bumper 13 so that the bolt head 11b can slide on the bolt holding portion 14. Since the bumper step 10 is attached to the bumper 13 by the held bolt 11 and nut 12, the bolt head 11b is not exposed on the bumper step 10 upper surface.
The appearance is good. Further, rainwater or the like is less likely to be applied to the bolt 11, and the generation of rust on the bolt 11 can be suppressed.

Further, since the bolt head 11b is slidably held without being fixed to the bolt holding portion 14, when the resin bumper step 10 contracts, expands or slips due to the influence of heat. In addition, the contraction and expansion are absorbed by the slide structure between the bolt head 11b and the holding groove 14a, and the escape of the bumper step 10 that causes the contraction, expansion, and slippage is not prevented by the bolt 11, so that the bumper step 10 can be prevented from being deformed.

Specifically, the shrinkage, expansion, and slippage are absorbed by the portion X in FIG.

[0019]

As described above, according to the first aspect of the present invention, the head of the bolt is not exposed on the upper surface of the bumper step, the appearance is good, and the bolt is hardly exposed to rainwater, etc. The generation of rust on the bolts can be suppressed.
Since the bolt head is slidably held without being fixed to the bolt holding portion, even when the bumper step made of resin or the like contracts, expands, or slips due to the influence of heat, this contraction, expansion Since the slippage is absorbed by the slide structure between the bolt head and the holding groove, and the escape of the bumper step that contracts and expands is not prevented by the bolt, the deformation of the bumper step can be prevented.

[Brief description of the drawings]

FIG. 1 is a diagram showing one embodiment of the invention according to claim 1;
FIG. 2 is a sectional view taken along the line AA in FIG.

FIG. 2 is a perspective view of the embodiment.

FIG. 3 is a view taken in the direction of arrow B in FIG. 2;

FIG. 4 is a perspective view showing a bolt holding operation.

5 is a view taken in the direction of arrow C in FIG. 3;

FIG. 6 is a perspective view showing a conventional bumper step mounting structure.

FIG. 7 is a cross-sectional view showing a bumper step mounting structure of the above.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 Bumper step for vehicles 11 Bolt 11a Bolt shaft part 11b Bolt head part 11c Circular plate part 12 Nut 13 Bumper 14 Bolt holding part 14a Holding groove part 14b Through hole part 14c Doorway part 14d Passing groove part

──────────────────────────────────────────────────続 き Continuation of front page (56) References JP-A-8-156716 (JP, A) JP-A-56-3045 (JP, U) JP-A-61-190750 (JP, U) JP-A-3-156 83139 (JP, U) (58) Field surveyed (Int. Cl. ⁷ , DB name) B60R 19/48

Claims (1)

(57) [Claims] 1. A structure in which a bumper step for a vehicle is mounted on a bumper with bolts and nuts, wherein a substantially box-shaped bolt holding portion is provided on a mounting surface side of the bumper step to the bumper; A holding groove for slidably holding a rectangular plate-shaped bolt head so that the bolt shaft extends substantially at a right angle, a bolt shaft protruding from the holding groove, and a bolt head and a shaft. And a substantially oval-shaped through-hole for fitting a circular plate formed between the holding plate and the holding groove formed by opening a part of the holding groove toward the side of the bumper step. and inlet and outlet part of the bolt head and the circular plate portion at the bolt detachable with respect to the groove, the part of the through-holes are formed by opening toward the bumper step lateral pair groove for the holding Mounting structure of a bumper step for vehicles, characterized in that it comprises a bolt passing groove of the bolt shaft portion during attachment and detachment of Te.