JPS63190920A - Clamping structure of automobile part, etc. - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention (Industrial Field of Application) The present invention is directed to attaching parts such as resin bumpers, window moldings, fender covers, radiator grills, etc. used for the exterior of automobiles to the main body of a vehicle. This is related to the fastening structure.

(Prior Art) As shown in FIG. 10, this type of fastening structure has fasteners installed in a horizontally long fitting groove 103 that is open on one side and is provided on a mounting plate 102 that is integrally formed with an exterior component 101. The clip portion 104 is press-fitted into the threaded shaft portion 1 of the fastener.
A tentatively assembled unit is prepared by inserting a ring-shaped sealing material 105 made of rubber into 11, and after inserting this into the mounting hole of the main body 106, a nut 107 is screwed to tighten the unit. It is something.

A conventional fastener 10 used in the above fastening structure
4, for example, those shown in FIGS. 11 and 12. This fastener 104 includes a square head 108 to prevent rotation, a washer 109 provided at a predetermined distance from the head 108, and a washer 109 provided between the head 108 and the washer 109. The small-diameter shaft portion 110 press-fitted into the fitting groove 103 constitutes a clip portion, and the distal end side of the screw shaft portion 111 whose base side is embedded in the clip portion projects from the washer portion 109 . In the fastener 104 having the above configuration, the clip portion is injection molded from a resin material, and at this time, the base side of the threaded shaft portion 111, which is previously manufactured from a metal material, is cast into the clip portion and integrated.

(Problems to be Solved by the Invention) However, the conventional fastening structure described above has the following problems.

■Molds for injection molding machines are becoming more complex, and the design and mold manufacturing costs are high, resulting in higher product prices.

■During molding, the resin material may flow to the tip of the screw shaft and crush the threads, or the screw shaft may shift from the center of the holding part, making it difficult to obtain products of stable quality. There are problems with quality and productivity, such as difficulty in

■Depending on the fastening location, different types of fasteners are required, with different lengths between the parts and the main body and the shape of the screw shaft. This will lead to a decrease in performance and an increase in costs, and if it is dared to be shared, extra parts such as intervening spacers for length adjustment will be required and the number of man-hours will increase.

■Management and transportation costs increase as the screws go through different industries, from the screw manufacturer to the resin processing company to the assembler.

(Means for Solving the Problem) In order to attach a component to the main body, one clip portion is fitted into a mounting plate provided on the component, and the other threaded portion is fitted into a mounting hole provided on the main body. a fastener penetrated through the
An automobile comprising: a sealing material that is fitted around the outer periphery of a threaded portion of the fastener and interposed between the clip portion and the main body; and a nut that is screwed into the threaded portion penetrated through a mounting hole of the main body. In a fastening structure for parts, etc., the clip portion of the fastener includes a clip head attached to the inside of the mounting plate of the component, and a fitting groove integrally connected from the clip head and bored in the mounting plate. A small-diameter shaft is press-fitted into the main body, and the clip is connected to the small-diameter shaft and attached to the outside of the mounting plate of the component, and cooperates with the clip to clamp the mounting plate. and a washer portion to form the
The clip part is integrally molded with a resin material, and a screw holding hole is bored in the clip part, and the threaded part of the fastener is a screw that is inserted into the screw holding hole of the clip part and tightly fastened. The screw shaft includes a head and a screw shaft that penetrates through the screw holding hole and projects toward the mounting hole of the main body, and the screw portion is integrally formed of a metal material and is separate from the clip portion. This is a fastening structure for automobile parts, etc., which is formed and then integrally assembled.

(Example) An example of the present invention will be described below based on the drawings. As shown in FIG. 1, the fastening structure according to the present invention has a body made of a steel plate like the conventional example described above.

A bumper for the main body 1 such as fenders and doors.

Exterior components 2 such as sashes and moldings are fixed using a fastener 3 having a male thread, a ring-shaped sealing material 6, and a fastening member such as a nut 9. The fastener 3 is
A clip portion 7 that is fitted into a horizontally long fitting groove 5 that is open at one end, which is formed in a mounting plate 4 that is integrally molded with the component 2 from a resin material, and a metal clip that is held by the clip portion 7. It is constituted by a threaded portion 8.

The threaded portion 8 includes a pressed screw head 10 that is engaged within the clip portion 7, and a rubber seal member 16 that protrudes from the clip portion 7 to the outside and is inserted into the main body 1.
The screw shaft portion 12 is formed integrally with a metal material and has a threaded shaft portion 12 which is threaded through the mounting hole 11 of the screw shaft 12 and into which the nut 9 is screwed. Note that there is a mounting hole 1 at the tip of the screw shaft portion 12.
A small-diameter protruding portion 12a is formed to facilitate insertion into the holder 1.

As shown in FIGS. 1 to 4, the clip portion 7 includes a clip head 18, a washer portion 19, and a small diameter shaft portion 20,
It is integrally molded from resin material. The clip head 8 is mounted on the inside of the mounting plate 4, and is formed in, for example, a rectangular shape so as to have a rotation preventing function with respect to the mounting plate 4 after being mounted. The washer part 19 is attached to the outside of the mounting plate 4,
It has a disk shape and forms a seat surface on which the main body 1 is tightened.

The small diameter shaft portion 20 integrally connects the clip head 18 and washer portion 19 that sandwich the mounting plate 4, and also
The clip part 7 is laterally press-fitted into a fitting groove 5 drilled in the part 2 to hold the clip part 7 on the component 2.

Further, a screw holding hole into which the screw portion 8 is mounted is bored in the clip portion 7, and the screw holding hole has a through hole 13 through which the screw shaft portion 12 passes, and a screw head 10 is accommodated therein. The shoulder portion 14 is formed between the through hole 13 and the enlarged diameter portion 15 and locks the screw head 10.

The clip portion 7 made of resin material and the screw portion 8 made of metal material are manufactured separately, and are assembled together as shown in FIGS. 5 and 6 prior to the fastening shown in FIG. 1. The fastener 3 is configured by the fastener 3. Note that when tightening the nut 9, the clip portion 7 and the threaded portion 8 may rotate relative to each other, or the threaded portion 8 may
As a holding means to prevent the screw from falling off from the clip part 7, the inner diameter of the enlarged diameter part 15 may be made smaller than the outer diameter of the screw head 10 and the opening edge of the enlarged diameter part 15 may be press-fitted as shown in FIG. The screw head 10 is fixed by the welded part 21 by heating, or the outer diameter or the enlarged diameter part 1 of the screw head 10 is fixed as shown in FIG.
Measures such as providing a serration 22 on one of the inner diameters of the inner diameter of the inner diameter of the inner diameter of the inner diameter of the inner diameter of the inner diameter of the serration 22 and press-fitting the other one into the serration 22 are taken.

Furthermore, as shown in FIG. 9 for the threaded portion 8, by providing a parallel thread 23 with no lead angle on the threaded shaft portion 12 adjacent to the screw head 10, the screw threads 23 are provided inside the threaded portion 8 along the threaded shaft portion 12. It cooperates with the sealing material 6 to prevent water from entering.

(Effects of the Invention) According to the present invention, since the fastener has a structure in which the clip portion made of a resin material and the threaded portion made of a metal material are manufactured separately and then combined, mold design and manufacturing costs are reduced. The product cost is reduced significantly, and there is no possibility of resin material leaking into the threaded part or misalignment of the axis.
In addition, a good fastening structure can be obtained since it is possible to selectively use combinations of clip parts and threaded parts that are suitable for various fastening points.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view of a fastening structure according to an embodiment of the present invention, FIG. 2 is a left side view 1 of a clip portion in the same fastening structure, FIG. 3 is a front view thereof, and FIG. 4 is a right side view thereof. Fig. 5 is a left side view of a fastener that constitutes a main part of the fastening structure of the present invention, Fig. 6 is a front view of the fastener, and Figs. 7 and 8 are holding means between the clip portion and the threaded portion of the fastener. 9 is a front view of a threaded portion provided with waterproofing means, FIG. 10 is a vertical sectional view of a conventional fastening structure, FIG. 11 is a front view of a fastener in the same fastening structure, and FIG. The figure is a left side view of the same. [Explanation of symbols] 1... Main body 2... Parts 3... Fasteners 4... Mounting plate 5... Fitting @
6...Sealing material 7...Clip part 8.
...Threaded part 9...Nut 10...Screw head 11...Mounting hole 12...Screw shaft part 1
3... Through hole 14... Shoulder part 15... Expanded diameter part 18... Clip head 19... Washer part 20...
・Small diameter shaft part 21... Welded part 22... Serration 23... Parallel thread Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8 Figure 9

Claims (1)

[Claims] In order to attach a component to the main body, one clip part is fitted into a mounting plate provided on the component, and the other threaded part is passed through a mounting hole provided in the main body. fasteners;
An automobile comprising: a sealing material that is fitted around the outer periphery of a threaded portion of the fastener and interposed between the clip portion and the main body; and a nut that is screwed into the threaded portion penetrated through a mounting hole of the main body. In a fastening structure for parts, etc., the clip portion of the fastener includes a clip head attached to the inside of the mounting plate of the component, and a fitting groove integrally connected from the clip head and bored in the mounting plate. a small-diameter shaft portion that is press-fitted into the small-diameter shaft portion; and a clip portion that is connected to the small-diameter shaft portion and is attached to the outside of the mounting plate of the component, and cooperates with the clip portion to clamp the mounting plate and form a tightening seat surface for the mounting surface of the main body. and a washer portion to
The clip part is integrally molded with a resin material, and a screw holding hole is bored in the clip part, and the threaded part of the fastener is a screw that is inserted into the screw holding hole of the clip part and engaged. The screw shaft includes a head and a screw shaft that penetrates through the screw holding hole and projects toward the mounting hole of the main body, and the screw portion is integrally formed of a metal material and is separate from the clip portion. A fastening structure for automobile parts, etc., characterized by being formed and then integrally assembled.