JP2570228Y2 - Bumper body fastening 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 vehicle body fastening structure of a bumper, and more particularly to a vehicle body fastening structure of a bumper for fastening a front end of a bumper side portion extending from a front surface of a bumper toward a vehicle body side.

[0002]

2. Description of the Related Art As shown in Japanese Utility Model Laid-Open Publication No. 1-173049, one side of an L-shaped retainer is formed in a groove formed at the tip of a side of the bumper as shown in Japanese Utility Model Laid-Open Publication No. 1-173049. It is known that one side of the retainer is fixed to the bumper side by one fastening member in an inserted state, and the other side of the retainer is fixed to the vehicle body by another fastening member.

[0003]

[Problems to be Solved by the Invention] By the way, due to the recent shortage of manpower, the process of assembling the bumper to the vehicle body is shifting from a conventional manual operation to an automatic mounting operation by a robot. Is desired.

However, in the above-described fastening structure, one side of the retainer is fixed to the bumper by one fastening member, and the other side of the retainer is fixed to the vehicle body by another fastening member. In addition to the large number of man-hours required at the installation site, the assembly work must be performed from the tire house, so the holes on one side of the retainer and the holes on the bumper are used to insert the fastening members, and the other side of the retainer is used. There is a problem that it is not easy to align the hole of the part with the hole of the vehicle body, and it is difficult to assemble the bumper side part to the vehicle body.

[0005] In view of the above, it is an object of the present invention to simplify the work of assembling a bumper side to a vehicle body, thereby facilitating automatic mounting of the bumper on the vehicle body by a robot.

[0006]

In order to achieve the above-mentioned object, the present invention provides a flange portion protruding inward at a front end portion of a bumper side, and the flange portion has a truncated conical guide hole. A nut member having a female screw portion extending continuously from the guide hole is attached, and the fastening bolt is guided to the female screw by the guide hole.

Specifically, a solution taken by the present invention is directed to a vehicle body fastening structure of a bumper for fastening a front end portion of a bumper side portion extending from a front portion of a bumper toward a vehicle body to the vehicle body. the distal end portion of the side, long hula <br/> Nji portion in the vertical direction and having a through hole to project inwardly in the vehicle width direction is integrally provided on the surface of the bumper front portion side of the flange portion , provided continuously at an end portion of the bumper front portion side of the guide portion and the guide portion made of the through hole and communicating and truncated cone-shaped opening comprising a diameter increases toward the bumper front portion side of the flange portion A nut member having a female thread portion is fixed in advance, and the
From a rod-shaped large-diameter part smaller in diameter than the through-hole and the tip side of the large-diameter part
A tapered portion formed with a smaller diameter toward the distal end side;
Fastening consisting of a male thread part provided at the tip from the taper part
Bolt is inserted from the vehicle body side into the through hole of the flange portion , and the tapered portion of the fastening bolt and the nut
In the state of contact with the guide part of the member, the male screw of the fastening bolt
The part is screwed into the female screw part of the nut member and the bumper side part is fastened to the vehicle body.

[0008]

According to the above construction, the flange portion communicates with the through hole of the flange portion and has a truncated conical hole having a diameter decreasing toward the front side of the bumper, and the guide portion on the front side of the bumper. Since a nut member having a female screw portion continuously provided at the end of the nut member is attached, when the fastening bolt is inserted into the through hole of the flange portion from the vehicle body side, the fastening bolt is connected to the guide portion of the nut member. Guided to the female thread smoothly.

Further, since the nut member is fixed in advance to a flange portion protruding inward in the vehicle width direction from the tip of the bumper side portion, there is no need to attach the nut member to the bumper side portion at an assembly site. .

Further, as described above, the nut member is formed by a flange.
The large diameter part of the fastening bolt and the flange
Even if there is a gap between the through hole of the
And the center line of the through hole always match,
The matching line between the par side and the body easily matches and looks good
Is improved.

In addition, the guide portion of the nut member and the fastening bolt
Since it is fastened in a contact state with the taper part of the
Centering of fastening bolts and nut members is performed
And the alignment of the bumper side and the vehicle
More sure.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings.

1 to 4 show a vehicle body fastening structure of a bumper according to an embodiment of the present invention, and FIGS. 5 and 6 show a front portion of a vehicle to which the vehicle body fastening structure of the bumper is applied, respectively. 1 is a sectional view taken along line II in FIG. 6, FIG. 2 is a side view seen from the inside, FIG. 3 is a sectional view taken along line III-III in FIG. 1, and FIG. 4 is a sectional view taken along line IV-IV in FIG. 5 is a perspective view, and FIG. 6 is a side view seen from the outside.

As shown in FIGS. 5 and 6, a resin bumper A includes a bumper front portion 10 extending in the vehicle width direction at a front surface of a vehicle body B, and a bumper front portion 10 extending from the bumper front portion 10 to the side of the vehicle body B. And an extended bumper side portion 12.

As shown in FIGS. 1 to 4, the bumper side 1
A front end portion 12a, which is a rear end portion, is provided integrally with the bumper side portion 12 so as to protrude inward in the vehicle width direction and be elongated in the vertical direction. , 16, 16 are provided.

A surface 14a on the side of the bumper front portion 10 which is a front surface of the flange portion 14 has a U-shaped cross section, extends vertically, and has insertion holes 18a, 18a at respective positions corresponding to the through holes 16. , 18a is provided, and the bracket 18 is fixed to the flange portion 14 by an appropriate number, for example, four rivets 20.

At the portion of the bracket 18 on the side of the bumper front portion 10 where the through hole 18a is provided, frusto-conical metal nut members 22, 22, 22 are fixed in advance by welding, respectively. I have. Each nut member 22 has a guide portion 24 formed of a truncated conical hole which communicates with the through hole 16 of the flange portion 14 and has a smaller diameter toward the bumper front portion 10, and a bumper front portion of the guide portion 24. A female screw portion 26 continuously provided at the end on the 10 side is formed.

As shown in FIG. 3, the flange portion 14
A large diameter portion 28a of the small diameter of the rod-like than the through-hole 16, and a tapered portion 28b formed on the small diameter <br/> tapered toward the distal end side of the large diameter portion 28 a distally, the tapered portion 28b
The male screw portion 28c of the fastening bolt 28 including the male screw portion 28c provided at the tip is inserted into the through hole 16 of the flange portion 14 and the insertion hole 1 of the bracket 18 from the vehicle body B side.
8a and the taper of the fastening bolt 28
Contact between the portion 28b and the guide portion 24 of the nut member 22
State has entered into bumpers side 12 in the vehicle <br/> body B male screw portion 28c of the fastening bolt 28 is screwed into the internal thread portion 26 of the nut member 22.

In this case, the nut member 22 communicates with the through hole 16 of the flange portion 14 and has a smaller diameter toward the bumper front portion 10, and the end of the bumper front portion 10 is continuous with the female screw portion 26. Since the guide portion 24 is provided, even if there is a displacement between the bumper side portion 12 and the vehicle body B, the male screw portion 28 at the tip of the fastening bolt 28 is provided.
When c is inserted into the guide portion 24 of the nut member 22 from the through hole 16 of the flange portion 14, the male screw portion 28c is guided by the guide portion 24 and is smoothly screwed into the female screw portion 26. Fastening work with B is easy.

Further, the nut member 22 is preliminarily mounted on the flange portion 1.
4, it is not necessary to attach the nut member 22 to the bumper side portion 12 at the assembly site.

Further, as described above, the nut member 22 is
The fixing bolt 28
Between the large-diameter portion 28a and the through hole 16 of the flange portion 14.
Even if there is a gap, the center line of the fastening bolt 28 and the through hole 1
6 can always be aligned with the center line,
The line for joining the bumper side part 12 and the vehicle body B can be easily
This can improve the appearance.

Moreover, the guide portion 24 of the nut member 22
Tighten the tapered portion 28b of the fastening bolt 28
The fastening bolt 28 and the nut member 2
2 can be centered with the bumper side
12 and the body B are more consistently aligned.
Can be made.

In this embodiment, the nut member 22
Although the nut member 22 is fixed to the flange portion 14 via the bracket 18, the nut member 22 and the bracket 18 may be integrated.

[0024]

As described above, according to the bumper body fastening structure of the present invention, the flange portion communicates with the through hole of the flange portion and has a truncated conical shape whose diameter decreases toward the front side of the bumper. Since a nut member having a guide portion formed of a hole and a female screw portion continuously provided at an end of the guide portion on the front side of the bumper is fixed, the nut member is positioned between the bumper side portion and the vehicle body. Even if there is a deviation, when the fastening bolt is inserted into the guide part of the nut member from the through hole of the flange part, the fastening bolt is guided by the guide part and reaches the female screw part smoothly, so that the bumper side part and the vehicle body The fastening operation is simple.

Further, since the nut member is fixed in advance to a flange portion protruding inward in the vehicle width direction from the front end portion of the bumper side portion, it is necessary to attach the nut member to the bumper side portion at an assembly site. Since it becomes unnecessary, the work of fastening the side of the bumper to the vehicle body is further simplified, and the automatic mounting of the bumper on the vehicle body by the robot becomes easy.

Further , as described above, the nut member is connected to the flange portion.
The large diameter part of the fastening bolt and the flange
Even if there is a gap with the through hole of the
By matching the core wire with the center line of the through hole, the bumper side
Easily match the matching line with the car body to improve appearance
Can be done.

Moreover, the guide portion of the nut member and the fastening
The tapered part of the
Centering of the binding bolt and nut member is possible,
The matching line between the damper side and the vehicle body is more reliably matched
Can do it.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view taken along a line II in FIG. 6, illustrating a vehicle body fastening structure of a bumper according to an embodiment of the present invention;

FIG. 2 is a side view of the vehicle body fastening structure of the bumper as viewed from inside.

FIG. 3 is a sectional view taken along line III-III in FIG.

FIG. 4 is a sectional view taken along line IV-IV in FIG.

FIG. 5 is a perspective view of a front portion of a vehicle to which the vehicle body fastening structure of the bumper is applied.

FIG. 6 is a side view of a front portion of the vehicle to which the vehicle body fastening structure of the bumper is applied, as viewed from the outside.

[Explanation of symbols]

A Bumper B Body 10 Bumper front part 12 Bumper side part 14 Flange part 16 Through hole 22 Nut member 24 Guide part 26 Female screw part 28 Fastening bolt 28a Large diameter part 28b Taper part 28c Male screw part

Claims (1)

(57) [Scope of request for utility model registration] 1. A bumper body fastening structure for fastening a front end of a bumper side portion extending from a front portion of a bumper toward a vehicle body to a vehicle body, the front end of the bumper side includes a vehicle width. long flange portion in the vertical direction and having a through hole to protrude toward the inside is provided <br/> integrally, on the surface of the bumper front portion side of the flange portion, communicates with the through hole of the flange portion and a guide portion made of truncated cone-shaped opening comprising a diameter increases toward the bumper front portion, a nut member having a female screw portion provided continuously to the end of the bumper front portion side of the guide portion is fixed in advance And a rod-shaped large-diameter portion smaller in diameter than the through hole of the flange portion,
The tape is formed with a small diameter from the distal end to the distal end of the diameter part.
And a male screw provided at the tip of the tapered portion.
A fastening bolt consisting of a part is inserted from the vehicle body side into the through hole of the flange part , and a taper of the fastening bolt is provided.
And the nut part is in contact with the guide part of the nut member.
The male thread of the bolt is screwed into the female thread of the nut member.
A body fastening structure for a bumper, wherein a side portion of the bumper is fastened to a vehicle body.