JPS6358738B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a bumper fascia mounting structure for an automobile bumper.

In recent years, so-called soft bumpers, in which the outer surface of a metal bumper armature is covered with a bumper fascia made of an elastic material such as resin or urethane rubber, have been widely used as automobile bumpers. According to this soft bumper, since the bumper fascia has resilience, the surface will not suffer permanent distortion in the event of a light collision, unlike metal bumpers, which greatly contributes to maintaining the appearance, and is also effective as a pedestrian safety measure. is very advantageous.

Figures 1 and 2 show an example of such a soft bumper, where 1 is a metal bumper armature formed in a box cross-sectional shape, and 2 is a resin bumper armature that covers the outer surface of the bumper armature 1. With the bumper fascia, the main part of the bumper fascia 2A
and the bumper sides 2B on both sides thereof are integrally molded. The bumper armature 1 is formed shorter than the width of the vehicle body, and is housed in the bumper fascia main portion 2A. In addition, this bumper fascia 2 includes a bumper fascia main portion 2A.
The upper and lower rear end edges are brought into contact with the upper and lower walls 1a and 1b of the bumper armature 1, and are held down by the retainer plate 3 and bolts and nuts 4 are fixed to these upper and lower walls 1a and 1b at multiple locations. (Refer to Japanese Unexamined Patent Publication No. 55031/1983).

By the way, when fastening and fixing the bumper fascia 2 described above, the retainer plate 3 is placed as close to the upper and lower rear edge end of the bumper fascia main portion 2A as possible, so that the retainer plate 3 is attached to a lamp (not shown), It is desirable to make the retainer plate 3 invisible through the gap between the bumper and a member such as the site shield, and to reduce the width of the retainer plate 3 to improve its appearance and reduce its weight. Therefore, first, it is necessary to form the fastening member insertion holes 5 in the upper and lower rear edges of the bumper fascia main part 2A close to the ends of the upper and lower rear edges. Due to the design of the fastening member insertion hole 5, it is impossible to lay out the insertion hole forming pin near the edge of the mold.
When molding is carried out simultaneously with the molding of the bumper fascia main portion 2A, the holes are formed at a relatively constant distance from the ends of the upper and lower rear end edges of the bumper fascia main portion 2A. However, in this case, since the fastening member insertion hole 5 is separated from the end of the rear end edge of the bumper fascia main part 2A, in order to easily and properly position the retainer plate 3, the rear edge of the retainer plate 3 must be It is necessary to use a wide plate so that it can be aligned with the rear end of the fascia main portion 2A, making it impossible to satisfy the above-mentioned requirements. Therefore, in such a case, after molding the bumper fascia 2, use a jig to insert the fastening member insertion hole 5 into the upper part of the bumper fascia main part 2A.
Although the fastening member insertion hole 5 is formed near the end of the lower rear edge, it takes a lot of effort to form the fastening member insertion hole 5 into the bumper fascia main part 2A, and it is necessary to achieve high forming accuracy. Not only does this increase the number of man-hours and costs, but when fixing the bumper fascia 2,
Retainer plate 3, bumper fascia main part 2
There was a problem in that it was difficult to align the fastening member insertion holes 6, 5, and 7 of the bumper armature A and the bumper armature 1, which also hindered assembly work.

In view of such conventional problems, the present invention has been developed by installing a narrow retainer plate on the main part of the bumper fascia.
In order to follow the structure of fastening and fixing to the bumper armature by placing it as close to the end of the lower rear edge as possible, the fastening member insertion hole provided in the main part of the bumper fascia was modified to fit the molding of the bumper fascia. It is an object of the present invention to provide a bumper fascia mounting structure that enables simultaneous molding and allows for easy and proper positioning of a retainer plate to further improve assembly workability.

In order to achieve the above object, in the present invention, a flange is provided upright in the vehicle width direction on the outer surface of the upper and lower rear end edges of the main part of the bumper fascia, and a retainer plate extending in the vehicle width direction is attached to the flange. In a structure in which the main part of the bumper fascia is fastened and fixed to the upper and lower surfaces of the bumper armature via this retainer plate so that the side edges are in contact with each other, the upper and lower rear ends of the main part of the bumper fascia are in contact with each other. A plurality of ribs extending from the front surface of the flange toward the front side of the main portion of the bumper facer are protruded at appropriate intervals on the outer surface of the edge, and a fastening member insertion hole is formed between the extension lines of these ribs, The side edges of the retainer plate are brought into contact with the front ends of the ribs, and the retainer plate is fastened and fixed to the bumper fascia and the bumper armature between the ribs and the ribs.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings, in which the same parts as those of the conventional structure are denoted by the same reference numerals.

In Figures 3 and 4, flanges 10 are provided at the ends of the upper and lower rear end edges of the bumper fascia main part 2A of the bumper fascia 2, respectively, protruding outward in the vehicle width direction. A plurality of short and small ribs 11 extending from the front surface of the flange 10 toward the front side of the bumper fascia main portion 2A are integrally provided at appropriate intervals. Then, between the required rib extension lines, for example, the bumper fascia main part 2
Ribs 11, 11 on both sides and center of A
A fastening member insertion hole 5 is formed between the extension lines.
On the other hand, the upper and lower walls 1 of the bumper armature 1
Fastening member insertion holes 7 and 6 are formed in portions of a and 1b of the bumper facer main portion 2A of the retainer plate 3 that correspond to the fastening member insertion holes 5, respectively, and these fastening member insertion holes 6, 5, and 7 are aligned. By inserting the bolts 4a and screwing them into the weld nuts 4b, the bumper fascia 2 is attached to the bumper armature 1 via the retainer plate 3.
It is fixed at

Here, when connecting the bumper fascia main part 2A of the bumper fascia 2 to the bumper armature 1 via the retainer plate 3 with bolts and nuts 4, the bumper fascia main part 2A is fitted to the bumper armature 1. Then, by aligning the fastening member insertion holes 5 and 7, and then applying the retainer plate 3 to the upper and lower surfaces of the bumper fascia main part 2A and abutting the rear edge against the rib 11, the retainer plate 3 Since positioning in the front-rear direction can be performed, by moving and adjusting the retainer plate 3 in the vehicle width direction while in contact with the rib 11, the fastening member insertion hole 6 of the retainer plate 3 can be aligned with the fastening member insertion hole 5, 7, the fastening member insertion holes can be aligned very easily, and the workability of assembling the bumper fascia 2 can be greatly improved. In addition, since a plurality of ribs 11 are provided at appropriate intervals, it is advantageous in terms of positioning accuracy control, and as described above, the retainer plate 3 is positioned in the front-rear direction by being brought into contact with the ribs 11. Since the bolts and nuts 4 are connected between the extension lines of the bumper fascia main part 2A, the dimension l from the fastening member insertion hole 5 of the bumper fascia main part 2A to the rear end of the bumper fascia main part 2A is
A sufficient amount can be secured regardless of the size of the rib 11. Therefore, the pin for forming the fastening member insertion hole in the mold for forming the bumper fascia 2 can be placed as close as possible to the cavity in which the flange 10 is formed without causing any layout problems.
It is possible to simultaneously mold the bumper fascia 2 of the fastening member insertion hole 5, and even if the mounting point pitch is wide, the ribs 11 can prevent the bumper fascia 2 from waving. The same effect as when the dot pitch is made small can be obtained, and there is no need for an increase in the number of parts such as bolts and nuts.

As described above, according to the present invention, the retainer plate can be properly positioned by the ribs protruding from the front surfaces of the flanges at the upper and lower rear ends of the bumper fascia main part toward the front side of the bumper fascia main part. This makes assembly work easier, and these ribs have the advantage of preventing undulating deformation of the rear end of the bumper fascia. Furthermore, since the fastening member insertion hole is opened between the extension lines of the ribs, the dimension from the fastening member insertion hole to the rear end of the main part of the bumper fascia can be increased, and therefore,
Even when using a small-width retainer plate, in other words, when forming the fastening member insertion hole close to the rib tip in the longitudinal direction, the fastening member insertion hole should not interfere with the layout of the mold. This has a great practical effect in that it can be molded at the same time as the bumper fascia without causing any problems, resulting in a significant cost reduction.

[Brief explanation of drawings]

Figure 1 is a perspective view showing an example of a soft bumper;
FIG. 2 is a sectional view taken along the line of FIG. 1 showing a conventional structure, FIG. 3 is a sectional view showing an embodiment of the present invention, and FIG. 4 is a perspective view of the same bumper fascia. 1...Bumper armature, 2...Bumper fascia, 2A...Bumper fascia main part,
3... Retainer plate, 5... Fastening member insertion hole, 11... Rib.

Claims (1)

[Claims] 1 Flanges are provided upright in the vehicle width direction on the outer surfaces of the upper and lower rear end edges of the main part of the bumper fascia, and the side edges of the retainer plate extending in the vehicle width direction are brought into contact with the flanges, and the retainer plate is In a structure in which the main part of the bumper fascia is fastened and fixed to the upper and lower surfaces of the bumper armature through A plurality of ribs extending on the front side of the main part of the fascia are protruded at appropriate intervals, and a fastening member insertion hole is formed between the extension lines of these ribs, so that the side edge of the retainer plate is attached to the front end of the rib. A bumper fascia mounting structure characterized in that the retainer plate is fastened and fixed to the bumper fascia and the bumper armature between the ribs and the bumper fascia and the bumper armature.