JPH0453316Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a mounting structure for a bumper cover and a reinforcing member of a synthetic resin bumper for automobiles, and particularly relates to a structure for attaching a bumper cover and a reinforcing member to a synthetic resin bumper for an automobile, and in particular to a structure for attaching a reinforcing member to a synthetic resin bumper cover. The present invention relates to an improvement in a bumper reinforcing member mounting structure that connects reinforcing members via ribs.

(Prior Art) A synthetic resin bumper for an automobile usually includes a reinforcing member such as a steel plate attached to the back of a bumper cover made of synthetic resin.

The mounting structure for the bumper reinforcement member requires a strong connection that can withstand vehicle collisions, and the mounting screws are not visible from the outside, so a structure in which the bumper reinforcement member is mounted via a rib with a T-shaped cross section is widely used. It has been adopted. To explain the conventional structure for attaching reinforcing members via T-shaped ribs, as shown in FIG. A reinforcing member 5 is arranged on the outside of the T-shaped rib, the T-shaped rib 4 is sandwiched between the retainer 2 and the reinforcing member 5, and a nut 6 connects the three members together.

Although the conventional reinforcing member mounting structure has the advantage of strong mounting, it has the disadvantage that the retainer must be temporarily placed inside the T-shaped rib during assembly.

That is, in the conventional case, the retainer is temporarily installed inside the T-shaped rib, the screw provided on the retainer is made to protrude from the T-shaped rib, and the reinforcing member is fixed using the screw. When tightening, the retainer often falls inward, requiring extremely high skill.

Therefore, the applicant first proposed a bumper for the purpose of temporarily fixing the retainer.
We attempted to solve the above problem. (Refer to Utility Model Application No. 178798 of 1988 (Refer to Utility Model Application No. 1986-86256)) (Problems to be solved by the invention) The above-mentioned proposal has the effect of considerably facilitating the installation work of the bumper reinforcing member. However, the present proposal is not different from the prior art in that it utilizes a retainer, and the current situation is that the above-mentioned problem has not been completely solved.

Therefore, the present invention focuses on the drawbacks of the conventional technology, and provides a bumper reinforcement that prevents the retainer from falling during assembly, prevents deformation due to the difference in thermal expansion between the reinforcing member and the bumper cover, and allows for easy positioning and efficient work. The purpose of this invention is to provide a structure for mounting members.

(Means for solving the problem) The feature of the present invention for achieving the above-mentioned purpose is that on the back of the synthetic resin bumper cover,
In the bumper reinforcing member mounting structure in which the reinforcing member is coupled to the bumper cover through a rib having a T-shaped cross section, the reinforcing member has a fork-shaped mounting portion in a portion corresponding to the T-shaped rib. However, the member on the side of the mounting part that is included in the bumper cover is provided with a female thread, and the outer member has a long hole or groove that penetrates the female thread, and a U-shape that communicates with the outside is provided in the center of the outer member. It has a slot shaped like T.
The T-shaped rib also has a hole or groove in the part corresponding to the female thread of the mounting part, and one protrusion in the center of the T-shaped rib. The mounting structure of the bumper reinforcing member is such that the mounting part is inserted, passes through a hole or groove in both parts, and is fastened together by a screw that engages with a female thread of the mounting part.

(Example) Specific examples of the present invention will be further described below.

Fig. 1 is a sectional view of a bumper that employs a bumper mounting structure according to a specific embodiment of the present invention, Fig. 2 is a partially enlarged view of Fig. 1, and Fig. 3 is a section in the direction A of Fig. 1. Fig. 4 is a view in the direction of arrows, and Fig. 4 is a view taken from B- in Fig. 3.
It is a sectional view of B.

FIG. 1 10 shows a bumper cover, which is molded from synthetic resin such as polyurethane, polypropylene, or polyvinyl chloride, has a T-shaped cross section at the top, and is provided with ribs 11 extending in the length direction over the entire width. .

The T-shaped rib 11 is provided with one protrusion 12 in the center and holes 13 at equal intervals in the length direction. The reinforcing member 14 provided on the back surface of the bumper cover 10 is made of metal such as steel, aluminum, or synthetic resin and has a frame shape as a whole, and has a bifurcated shape 15 on the upper part, which is a feature of the present application. The fork-shaped portion 15 is the front part, that is, the member 16 on the side that is included in the bumper face when assembled as a bumper has a linear cross section and corresponds to the hole 13 provided in the T-shaped rib 11. A nut 17 is welded to the location where the bolt is connected.

Note that the nut 17 is attached to the member 16 on the side to be enclosed.
The rotation may be regulated by a fitting method without welding the nut. The outer member 18, which faces the inner member 16, faces the former member with a width approximately equal to the thickness of the T-shaped rib 11, and its tip is perpendicular to the wall of the bumper face. It is bent to

Then, the longitudinal center portion of the member 18, that is, T
A U-shaped slot 19 continuous from the outside is provided in a portion of the rib 11 corresponding to the protrusion 12.
A long hole 20 is provided at a location corresponding to the hole 13 of the shaped rib 11.
is provided.

Then, the forked shape 15 of the reinforcing member 14 is attached to the T-shaped rib 11 of the bumper cover with the protrusion 12 and the slot 1.
9 are fitted, and the hole 13, the elongated hole 20 and the nut 17
A screw member 21 such as a bolt is inserted into the elongated hole 20 from the side of the outer member 18 of the forked shape 15, and is fitted and fastened with the nut 17. Further, the reinforcing member 14 is coupled to the bumper cover by tightening the shape 15 and sandwiching the T-shaped rib.

In the embodiments described above, the outer member 18 has a threaded member 2.
1 is made into a long hole mainly to absorb the difference in thermal expansion between the reinforcing member 14 and the bumper cover 10. The T-shaped rib 11 is provided with a protrusion 12, and the outer member 18 is provided with a groove. The hole 19 was provided to facilitate positioning during assembly.

In the above-described embodiments, the shape of the reinforcing member was exemplified as a typical frame shape, but the essence of the present invention is not limited to this, and the shape as shown in FIG. 5 may be used.

(Effects) The reinforcing member mounting structure of the bumper of the present invention is such that the reinforcing member is provided with a bifurcated shape, a screw is provided on the bifurcated portion, and a long hole and a T-shaped rib protrusion are formed on the outer member to allow the screw member to pass through. A U-shaped groove that engages with the bumper cover is provided, and the T-shaped rib of the bumper cover is sandwiched between the two forks, and the T-shaped rib of the bumper cover is sandwiched together with screws. No need for a retainer.

Therefore, the bumper reinforcing member mounting structure of the present invention eliminates the risk of the retainer falling into the interior during assembly, absorbs the difference in thermal expansion between the reinforcing member and the bumper cover, and facilitates positioning, allowing for efficient work. It has the effect of being able to do things. It also has the effect of reducing the number of parts and can be manufactured at a lower cost than conventional techniques.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of a bumper that employs a bumper mounting structure according to a specific embodiment of the present invention.
The figure is a partially enlarged view of Fig. 1, Fig. 3 is a partial view taken in the direction A of Fig. 1, and Fig. 4 is a partial view of Fig.
-B sectional view, FIG. 5 is a sectional view of a bumper according to a modified embodiment of the present invention, and FIG. 6 is a sectional view of a bumper showing a conventional bumper mounting structure. 10...Bumper cover, 11...T-shaped rib, 14...Reinforcement member, 15...Forked shape, 17
... Nut, 21 ... Screw member.

Claims (1)

[Scope of utility model registration request] In a bumper reinforcing member mounting structure in which a reinforcing member is coupled to the back of a synthetic resin bumper cover via a rib with a T-shaped cross section provided on the bumper cover, a portion where the reinforcing member corresponds to the T-shaped rib. The mounting part has a fork-shaped mounting part, and the member on the side of the mounting part that is included in the bumper cover has a female thread, and the outer member has a long hole or groove passing through the female thread, and further has an outer member. The T-shaped rib has a U-shaped groove in the center that communicates with the outside, and the T-shaped rib also has a hole or groove in the part corresponding to the female thread of the mounting part, and a projection in the center of the T-shaped rib. The fork-shaped mounting part of the reinforcing member is inserted into the T-shaped rib of the bumper cover, passes through the hole or groove of both parts, and is fastened together with a screw that engages with the female thread of the mounting part. A mounting structure for a bumper reinforcing member, characterized in that: