JPS6324050Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a nut attachment device for a synthetic resin bumper used when attaching a license plate to the bumper of an automobile.

Recently, automobile bumpers are sometimes molded from synthetic resin. A bumper is installed horizontally at the bottom of the front or rear of a car, and requires a license plate displaying the vehicle number to be attached to the bumper. In this case, if you cannot reach the back side after assembling the bumper,
It is necessary to fix the nut to the bumper in advance. Generally, in such cases, nuts are inserted when the bumper is molded. However, if there is an insert part, it is necessary to set the insert part in a mold at a predetermined position during molding, which is time consuming, reduces productivity, and increases manufacturing costs. Also, a square hole is made next to the screw hole in the bumper, and a U-shaped plate nut is inserted through the square hole, but the mounting position of the plate nut may not be stable and it may fall off. I am not feeling well due to poor assembly workability.

This idea is an improvement based on these points.
Embodiments of the present invention shown in the drawings will be described below.

The bumper 1 is installed horizontally at the lower part of the front surface 2 of an automobile, and is molded from synthetic resin using an injection molding machine or the like. Holes 4 are provided in the bumper 1 on the left and right sides of the center in alignment with the screw holes of the license plate 3. A rectangular hole 5 is provided on both sides of the hole 4, and a locking piece 7, which projects from one side of the rectangular hole 5 to the back surface of the bumper 1 and has a key part 6 at its tip, is integrally provided. That is, in the rectangular hole 5,
By making sure that the mold on the front side is inserted, the hanging piece 7
However, it can be formed only by molding the front and back sides. On the other hand, hooking portions 10 are provided on both sides of a nut plate 9 to which a nut 8 is fixed by welding or the like in the center. and,
The nut 8 is aligned with the hole 4 of the bumper 1, the nut plate 9 is placed along the back surface of the bumper, and the hook part 10 is hooked on the hook piece 7 to hold the nut plate 9. The license plate 3 is attached by aligning it with the hole 4 from the front side of the bumper 1, passing a screw 11 through it, and tightening it to a nut 8.

By providing the long rectangular hole 5 in the bumper 1, the locking pieces 7 provided on both sides of the hole 4 of the bumper 1 become the place where the mold on the front side is inserted. The piece 7 can be molded to integrally protrude from the bumper 1 using only the front side mold and the back side mold. In this way, there are no insert parts, and the product can be manufactured at high productivity and at low cost. And Natsuto board 9
By hooking the hooking parts 10 at both ends to the hooking piece 7, positioning and holding can be performed, and when tightening the screw 11,
The bumper 1 can be tightened without having to put your hands into the back side of the bumper 1.

As explained above, this idea provides rectangular holes on both sides of the bumper hole molded from synthetic resin.
A locking piece having a key portion at the tip is integrally provided to protrude from one side of the rectangular hole to the back side, and a locking portion is provided at both ends of a nut plate with a nut fixed to the center, I aligned it with the hole from the back side and hooked the hooks on both sides to the hook pieces to hold it.
The hanging pieces can be integrally projected and molded using the front and back side molds used to form the bumper, resulting in high productivity and low cost production. The nut plate can be reliably held and positioned by being hooked onto the hook piece, and the workability when fastening the license plate with screws is also good. Further, although the case where a license plate is fastened to a bumper has been described, it can also be used for other synthetic resin parts.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which Fig. 1 is an external perspective view, Fig. 2 is an enlarged exploded perspective view of main parts, and Fig. 3 is a cross-sectional plan view. 1...bumper, 4...hole, 5...rectangular hole,
6...Key portion, 7...Latching piece, 8...Nut, 9...
...Nut plate, 10...Latching part.

Claims (1)

[Scope of utility model registration request] A bumper made of synthetic resin is provided with rectangular holes on both sides of the license plate mounting hole, and a locking piece having a key portion at the tip is integrally protruded from one side of the rectangular hole to the back side. A nut is fixed to the center, and hooks are provided at both ends of the nut plate, and the center of the nut plate is aligned with the hole from the back side, and the hooks on both sides are hooked to the hook pieces to hold it. A synthetic resin bumper nut mounting device characterized by: