JPS62255259A - Fitting structure for bumper surface - Google Patents

Abstract

PURPOSE:To prevent sag for the upper wall of a bumper surface by providing a fixture adapted for connecting respective connecting flanges of a bumper center portion and a bumper side portion and composed of a inch portion for pinching both flanges and abutment portions to be brought in abutment with the upper wall of the bumper surface adjacent to notches formed at the upper ends of the flanges. CONSTITUTION:A bumper surface includes a bumper center portion 3 and a bumper side portion 4 which are integrally connected through a fixture 20. In this case, the fixture 20 is made of metal and is composed of a pinch portion 21 being of substantially U shaped configuration in cross section with upper and lower bolt insertion holes and adapted for pinching respective flanges 7, 8 of the bumper center portion 3 and the bumper side portion 4, and abutment portions 22 extending horizontally outwardly from the upper ends of the pinch portion 21 to be brought in abutment with upper walls 14, 15 adjacent to notches 18, 19 in the flanges 7, 8. Thus constructed, sag in the upper walls 14, 15 at hardening of the bumper surface is prevented by the notches 18, 19, and downward deflection of the upper walls 14, 15 at hardening of the bumper surface is prevented by the notches 18, 19, and downward deflection of the upper walls 14, 15 due to secular change after assembling is prevented by the abutment portions 22.

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention relates to a mounting structure for a bumper skin, and in particular, a bumper skin comprising a bumper center portion and a bumper side portion is provided at the ends of the bumper center portion and bumper side portions. The present invention relates to a mounting structure for a bumper skin that is fastened using a flange portion.

[Conventional technology]

Generally, a bumper is installed at the rear end of the vehicle to absorb the impact of a minor collision, but this bumper does not extend all the way to the side of the vehicle body, as shown in Figure 5. There is something. When the bumper skin constituting such a bumper 2 is formed of synthetic resin or the like, due to limitations in the capacity of the molding machine, etc., the bumper skin is divided into a bumper center part 3 and bumper side parts 4 at both ends and molded. These are then assembled to form the bumper skin.

A conventional bumper skin mounting structure is shown in FIG. These are bumper center part 3 and bumper side part 4.
A flange portion 7.8 with bolt holes 5.6 at two upper and lower locations is formed at the end of the Cross section abbreviated U
The mounting bracket 9, which has an oak 11 fixed by welding, is inserted into the mounting bracket 9 and fixed using a port lO. Note that reference numerals 12 and 13 in FIG. 6 are protrusions and insertion holes for positioning the bumper center portion 3 and bumper side portions 4.

By the way, assuming that the structure of the flange portion 7.8 is continuous from the upper walls 14, 15 to the lower walls 16, 17 of the bumper center portion 3 and bumper side portions 4 having a U-shaped cross section, the flange portion 7.8 The cooling rate at the time of molding is different between the part and the upper wall 14.15 of the bumper center part 3 and the bumper side part 4, and the amount of shrinkage is different from the part of the upper wall 14 located away from the part continuous with the flange parts 7, 8. Since the amount of contraction of .15 is large, there is a problem in that the upper walls 14, 15 of the bumper center portion 3 and bumper side portions 4 are stretched and sag.

Therefore, as shown in FIG.
．． 15 and the flange portion 7.8 are discontinuous to prevent sagging due to differences in thermal contraction.

However, in a bumper skin with such a structure,
Due to aging after assembly, the parts of the bumper center part 3 and the bumper side parts 4 corresponding to the notches 18.degree. Therefore, pampamole is continuously applied to the top walls 14.15 of the bumper center portion 3 and the bumper side portions 4 to prevent the top walls 14.15 from falling down. still,
Publicly known documents regarding this type of pamba include JP-A-57-
There is a publication No. 18540.

[Problem that the invention seeks to solve]

However, attaching the pamba molding in this manner has the problem that the number of parts increases and the number of steps for attaching the bumper increases, leading to an increase in cost.

Therefore, a technical problem of the present invention is to prevent the upper walls of the bumper side portions and the bumper center portion from collapsing without increasing the number of parts or steps.

[Means for solving problems]

The technical means of the present invention for achieving the above technical problems are as follows:
The bumper side portion and the bumper center portion are fixed via a mounting bracket having a clamping portion that sandwiches both flange portions and a contact portion that abuts the upper wall of the bumper skin near the notch of the flange portion. be.

〔Example〕

Embodiments of the bumper skin mounting structure according to the present invention will be described below with reference to the drawings.

1 and 2 show an embodiment of the bumper skin mounting structure according to the present invention. In this embodiment, the bumper skin is divided into a bumper center part 3 and a bumper side part 4 as in the conventional case. In this embodiment, the bumper center portion 3 and the bumper side portions 4 are connected to each other via mounting brackets 20. It is fixed at 10. This mounting bracket is made of metal and includes a holding part 21 which has a substantially U-shaped cross section and has port insertion holes 24 at the top and bottom, sandwiching both flanges 7.8 of the bumper side part 4 extending from the bumper center part 3, and the upper end of this holding part. A contact portion 22 extending horizontally outward from the flange portion 7.8 and abutting on the upper wall 14.15 near the notch 1g and 19 of the flange portion 7.8 is formed on one side of the port insertion hole 24 of the clamping portion. The cheat 2 tool 23 is fixed by welding.

Then, in order to assemble the bumper center part 3 and the bumper side part 4 using this mounting bracket lL:20, both the flange parts 7.8 of the bumper center part 3 and the bumper side part 4 are assembled.
are butted together, the clamping part 21 of the mounting fitting 20 is sandwiched between the flange parts 7.8, and the port 10 is screwed into the nut 23 and fixed.

At this time, the contact portion 22 is brought into contact with the back surface of the upper portion 914.15 of the bumper side portion 4 which extends to the bumper center portion 3.

Therefore, according to this embodiment, the upper wall 14.15 can be prevented from sagging when the bumper center part 3 and the bumper side part 4 are hardened by the notch part 18.19 formed in the flange part, and The abutting portion 22 of the mounting bracket 20 can effectively prevent the upper wall 14, 15 from collapsing due to aging.

3 and 4 show a second embodiment of the bumper skin mounting structure according to the present invention. This embodiment has the same structure as the first embodiment except that the abutment part 31 of the mounting bracket 30 is formed from one part of the clamping part 32, so the same parts are designated by the same reference numerals. The detailed explanation thereof will be omitted.

Therefore, this embodiment can also effectively prevent the upper wall from collapsing as in the first embodiment.

〔Effect of the invention〕

As explained above, according to the present invention, in the bumper skin mounting structure in which the bumper center part and the bumper side part are assembled by fastening the flange part in which the cutout part is formed, the clamping part that sandwiches both the flange parts and the cutout in the flange part are provided. Since the bumper side part and the pampa center part are fixed via a mounting bracket that has a contact part that contacts the upper wall of the bumper skin near the notch, there is no need to go through special parts such as pampa molding and the installation process. Therefore, it is possible to prevent the upper walls of the bumper center portion and the bumper side portions from sagging, and the appearance quality can be maintained.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing the first embodiment of the present invention, Fig. 2 is a sectional view corresponding to the line ■-■ in Fig. 1, and Fig. 3 is a mounting used in the second embodiment of the present invention. FIG. 4 is a sectional view similar to FIG. 2 showing a second embodiment of the present invention, FIG. 5 is a perspective view of an automobile bumper, and FIG. 6 is a perspective view of a conventional bumper skin. FIG. 3 is a perspective view showing the mounting structure. 3...Bumper center part 4...Bumper side part 14.15...Top wall 20.30...Mounting bracket 21.32...Holding part 22.31...Abutting part Patent applicant Nissan Jidosha Co., Ltd.: +□-2nd 1wJ 21: Kaiji trunk 22: U # Shu 2nd m 4th Figure 51! m

Claims (1)

[Claims] In a bumper skin mounting structure in which a bumper skin composed of a bumper center part and a bumper side part is fastened by abutting flange parts provided at the ends of the bumper center part and bumper side parts and having a notch formed in the upper end part, The bumper side part and the bumper center part are fixed via a mounting bracket having a clamping part that sandwiches the flange part and a contact part that comes into contact with the upper wall of the bumper skin near the notch of the flange part. The mounting structure of the bumper skin.