JPS60121146A - Attachment structure for vehicle bumper - Google Patents

Abstract

PURPOSE:To arrange a bumper body at a set level onto a vehicle body panel, by engaging a locating pin attached to the rear section of the bumper body, in a through-hole formed in the surface of the panel. CONSTITUTION:A locating pin 11 attached to the rear surface of a bumper body 1, is engaged in a through-hole 12 which is formed in a vehicle body panel 4 at a position opposed to the bumper body 11, and therefore, the bumper body 1 is positioned onto the vehicle panel 4. With such a structure that a bumper stay 2 is secured to the side surface of a vehicle body side member 3, the bumper body 1 may be always positioned at a designed level on the vehicle body panel 4 even though an error in the coupling between the vehicle body side member 3 and the vehicle body panel 4 takes place.

Description

[Detailed description of the invention] Industrial applications The present invention relates to a mounting structure for an automobile bumper.

As shown in the prior art, the vehicle body front-rear direction joint #f is fastened and fixed to the vehicle body side member, which is a member, via a pumper tie, so that the collision input is borne by the side member. The method of assembling this Pampersti to the side member of the vehicle body varies depending on the vehicle model, but generally a Jl'lI construction as shown in Fig. 2A and BVc is adopted. In these figures, 1 is the bumper main body, 2 is the pumper tie fixed on both sides of the bumper main body 1, 3 is the front side member, 4 is the radiator support),
5Vi shows the radiator grill arranged at σ11 in front of the radiator face support 4. The AKi model shown in the figure has a flange 6 formed on the lower edge of the rear end of the panperstie 2, the rear end of the panperstie 2 is inserted into a mounting hole 7 formed in the radiator core support 4, and the flange 6 is attached to the front side member. 3. Bolts and nuts 8 are fixed at two places on the top surface, front and rear. The one shown in FIG. The hook is designed to support a heavy bumper, and the notch ff
Bolts and nuts 8 are fixed to the sides of the front side member 3 at B9 and two locations in front of it.

However, in any of these structures, since the bumper main body 1 is mounted using the top or side surface of the front side member 3 as a reference surface, the bumper main body 1 may be Not only does the gap δ between the top surface of 1 and the radiator grille 5 located above vary from vehicle to vehicle, but even in the same vehicle, the gap δ also varies between the left and right sides, resulting in a total deterioration in appearance and quality. There was a problem with it.

Purpose of the Invention The present invention addresses the conventional situation, and even if there is a connection error between the vehicle body panel and the vehicle side member, the bumper body can be disposed at a set height position of the vehicle body panel, and the upper surface of the bumper body can be disposed. It is an object of the present invention to provide a mounting structure for an automobile bumper that can maintain a constant gap between the bumper and the vehicle body functional parts disposed above the bumper body.

Structure of the Invention In order to achieve the above object, the present invention has a structure in which a bumper body is fastened and fixed to a side surface of a vehicle body side member via a pumper tie, and a locate pin is provided at the back of the bumper body. On the other hand, through-holes are formed in the flannel surface of the vehicle body facing the bumper body, and these locating pins and the through-holes are engaged with each other for positioning.

Example do.

In Fig. 3.4, a notch 9 is formed on the rear end edge of the pampers tie 2, and this notch 9 is used to engage section 8 of a stud bolt provided upright on the side of the front side member 3, and the hook is supported. This pumper tie 2 basically has a notch 9 on the side surface of the front side member 3, and bolts and nuts 8 are fixed at two locations in front of the notch 9. On the other hand, a locate pin 11f is provided on the flange 10 formed on the back of the bumper main body 2, specifically, in this embodiment, on the rear edge of the head portion 2a of the bumper tee 2.

A through hole 11 is formed in the radiator core support 4 facing the bumper body 1, and these locate pins 1 are provided.
1 and the through hole 12, the bumper body 1 can be positioned relative to the radiator core support 4.

The locate pin 11 has a small diameter part 11a formed at its tip, and a snap protrusion 1: (, 14') near the bottle detection part 11b and the small diameter part 11 and its tip. 10, and the snap protrusion 13 is engaged with the edge of the mounting hole 10a.On the other hand, the through hole 12 has a locating pin iif: a large diameter portion 15a and a small diameter portion 15b for receiving. Grommet 1 made entirely of stepped molded elastic material such as rubber or resin
5 is elastically fixed to the edge of the through hole 12 by its seventh rank portion 15c and snap portion 15d, and the locating pin 11 is inserted into the grommet 15, and the snap protrusion 14 at the end of the pin small diameter portion lla is connected to the small diameter grommet. It is added by being attached to the edge of the portion 15b. Here, an appropriate gap S' is set between the stepped portion 11c of the locate pin 11 and the stepped portion 15e of the grommet 15, and the backward movement of the locate pin 11 is
This allows Iih to be tolerated. In addition, the head fl of the pampers tie 2 is formed as a long hole in the vertical direction of the stud bolt insertion hole 2b near the lza.

According to the above embodiment structure, when installing the bumper main body 1, the rear end of the bumper tee 2 is inserted into the attachment hole 7 of the radiator core support 4, and the notch 9 of the rear end edge is inserted into the stud bolt 8. At the same time, the locate pin 111c
The pin is inserted into the grommet 15 of the through hole 12, and the snap protrusion 14 at the tip of the pin is engaged with the edge of the grommet small diameter portion 15b. The engagement pressure between the locate pin 11 and the grommet 15 determines the mounting position of the bumper main body 1 with respect to the two radiator core supports 4. Even if there is a coupling error between the radiator core support 4 and the vehicle body side member 3, this error can be adjusted using the stud bolt insertion hole 2b formed in the vertical hole, and will not affect the determination of the mounting position. . Therefore, by fixing the bolts and nuts 8 at two locations in the notch 9 and in front thereof, the gap δ between the top surface of the bumper main body 1 and the radiator grill 5 disposed above it is always kept constant. It can be done.

Furthermore, in this embodiment, when the bumper main body 1 moves slightly backward due to the deformation of the pants stay 2 during a light collision, the locating pin 11 slides inside the grommet 15 and moves to the stepped portions 11c and 15e as shown in the fifth figure. When the stay flange 10 hits, the edge of the mounting hole 10a of the stay flange 10 only slides over the snap protrusion 13 and on the locating pin 11, which prevents the locating pin 11 from moving up and applying collision input to the radiator core support 4. Then, the radiator core support 4
can be negotiated. Furthermore, the bumper body 1. If Pampersti 2 is to be electrodeposited together with the car body, use the notch 9 on the rear edge of the stake as a stud pole) 8a
Locate pin 11 and grommet 15
The bumper body 1 can be temporarily fixed to the vehicle body by attaching it to the vehicle body, making the temporary IJ work very easy. It is much more advantageous compared to the previous case.

For positioning the bumper main body 1, in addition to the above-mentioned method, a locating pin with a short diameter may be inserted into the through hole and engaged without using a grommet. Furthermore, it goes without saying that the present invention can also be applied to a bumper; in this case,
The vehicle body side members are replaced by rear side members, and the vehicle body panel is replaced by a lower panel. Further, in the case where the bumper body is a so-called seven-piece bumper having a bumper fascia made of resin, the bumper body 1 directly connected to the bumper tie 2 is replaced by a bumper reinforcement.

Effects of the Invention As described above, according to the present invention, even though the entire bumper tie is basically fastened and fixed to the side member side of the vehicle body by engaging the locating pin and the through hole, the installation of the bumper body does not meet the standards. Since the bumper body can be positioned as the vehicle body panel facing the bumper body, the bumper body can always be placed at the designed height position of the vehicle body panel even if there is a coupling error between the vehicle body side members and the vehicle body panel. In particular, when functional parts are arranged above the bumper body on a car body panel, it is possible to maintain a constant gap between the bumper body and the car body functional part, so as not to spoil the appearance or improve quality. This has a great practical effect in that there is no need to run the entire route.

[Brief explanation of the drawing]

Fig. 1 is a front perspective view of an automobile, Fig. 2 A and B are sectional views showing six different examples of conventional structures, Fig. 3 is a sectional view showing one embodiment of the present invention, and Fig. 4 is the same. FIG. 5 is an enlarged view of the main part of the embodiment, and is an explanatory diagram when the pampers tea is deformed and moved. 1...Bumper main body, 2...Pamper tie, 3.
...Vehicle body side member, 4...Vehicle body panel, 11...
・Locate pin, 12...through hole. Figure 2, (A) Figure 2 (,B)

Claims (1)

[Claims] (1) The entire bumper body has a structure in which it is fastened and fixed to the side of the vehicle body side member via the bumper tie, and a locate pin is provided on the back of the bumper body, while the vehicle body panel surface facing the bumper body is provided with a locate pin on the back of the bumper body. 1. A mounting structure for an automobile bumper, characterized in that all through holes are formed in the locating pins and the through holes are engaged to determine the position.