JPH0616865Y2 - Mounting structure for automotive resin fenders - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a resin fender mounting structure for fixing a resin fender to an outer side of a metal fender skirt.

[Conventional technology]

Conventionally, as a mounting structure for this type of automobile fender, there is a device disclosed in Japanese Utility Model Laid-Open No. 61-122986 as shown in FIG. That is, A is a metal upper reinforcement (front upper side rail), and when the mounting portion D of the resin fender C is fixed on the mounting portion B, the shaft portion has a large diameter shaft portion E and a small diameter screw portion. It is configured to be fixed by a bolt G with a stopper composed of F and a nut H.

However, in this mounting structure, a gap may occur between the upper surface of the mounting portion D of the resin fender C and the lower surface of the head Ga of the bolt G, and play may occur. That is, when fixing a large resin component to metal, the relative length differs due to the difference in the coefficient of thermal expansion, so that distortion will occur in the resin component when completely fixed. Therefore, the mounting portion D of the resin fender C cannot be completely fixed, and as a result, the mounting portion D gradually becomes loose and rattling occurs.

Therefore, as shown in FIG. 7, a disc spring washer 1 made of resin is interposed between the upper surface of the mounting portion D of the resin fender C and the lower surface of the head Ga of the bolt G, so that there is backlash. Is removed. Then, by forming the insertion hole of the bolt G formed in the fender C in a long hole, the disc spring washer 1 causes the displacement difference caused by the difference in linear expansion coefficient between the upper reinforcement A and the fender C due to temperature change. C
The fixed portion has a sliding function so that it slides on the upper surface of the mounting portion D of the above.

However, in the conventional mounting structure as shown in FIG. 7,
Since the bolt G and the nut H are used, the fixing work is inefficient and the cost is increased. Further, depending on how the nut H is tightened, the resin fender C may be cracked. Therefore, when the bolt G is inserted from the upper reinforcement A side, the nut H is fixed to the resin fender. It is necessary to weld to C, but the nut cannot be joined to the resin and strength cannot be secured. Further, when the temperature changes, the peripheral portion of the flat head screw washer 1 slides on the upper surface of the fender C in a squeezing manner, so that the coating applied to the upper surface of the fender C is peeled off by this sliding, and the appearance Is damaged. Further, when the countersunk washer 1 made of resin is used, since the fender C is pressed by its elastic deformation, the stress is relatively large and the structure becomes weak against heat.

Therefore, as a solution to such a conventional problem, Japanese Patent Publication No. 46-24083 discloses an invention in which a spring or rubber is provided between a fixing bolt and a resin component to provide a sliding function. Is proposed.

[Problems to be solved by the invention]

By adopting the invention of Japanese Patent Publication No. 46-24083, the conventional problems as described above are solved, but the number of parts of the elastic body is increased and the structure is complicated. Therefore, there is a problem that the cost is increased.

[Means for solving problems]

The present invention has been made in order to solve the above-mentioned conventional problems, and has the same function as that of the invention of Japanese Patent Publication No. 46-24083. It is an object of the present invention to provide a product that can be manufactured easily and inexpensively without adding a body, and the gist thereof is to provide a fender skirt and a resin fender fixed on the fender skirt. When the convex bead formed around the bolt insertion hole of the skirt overlaps the resin fender with a required gap, the resin fender is inserted into the long hole for bolt insertion. Through a ring washer that is thicker than the thickness and a metal washer that has a circular arc-shaped bead that protrudes downward on a concentric circle with the bolt insertion hole, bolts to the fender skirt.
It is a resin fender mounting structure for automobiles characterized by being tightened and fixed with a nut.

〔Example〕

Hereinafter, the resin fender mounting structure according to the present invention will be described as follows.
A detailed description will be given based on the embodiment shown in FIGS.
1 is an external perspective view of an automobile, FIG. 2 is an enlarged cross-sectional view taken along the line II-II of FIG. 1, FIG. 3 is an exploded perspective view of essential parts, and FIG. 4 is of FIG. III-III line sectional drawing, FIG. 5 shows the IV-IV line sectional drawing of FIG.

In the drawings, reference numeral 1 denotes a metal fender skirt, which is formed by forming an insertion hole 4 for a bolt 3 on the upper surface of a strip-shaped horizontal mounting portion 2 and at the periphery of the insertion hole 4. A plurality of short convex beads 5 are provided in a protruding manner.

6 is a resin-made fender, and a mounting portion 7 having the same width as that of the fender skirt 1 is formed.
An elongated hole 8 for inserting a bolt is formed at a position corresponding to the insertion hole 4 of the bolt 3. The long axis of the long hole 8 is parallel to the longitudinal direction of the mounting portion 7 and is formed in such a size that a cylindrical ring washer 9 can be housed movably, and the ring washer 9 is made of resin fender 6 The thickness of the board is good and slightly thick.

A metal washer 10 is provided with a plurality of arc-shaped beads 12 protruding downward on a circle concentric with the bolt insertion hole 11. Reference numeral 13 in the drawing denotes a nut screwed onto the bolt 3.

Next, the assembly will be described. First, the bolt insertion hole 4 of the fender skirt 1 and the elongated hole 8 of the resin fender 6 are described.
When the mounting portion 7 of the resin fender 6 is placed on the upper surface of the mounting portion 2 of the fender skirt 1, the convex beads 5 formed on the fender skirt 1 cause the mounting portion 7 of the resin fender 6 to A fixed gap A is secured between the lower surface and the upper surface of the mounting portion 2 of the fender skirt 1, and the mounting portion 7
Is placed on the upper surface of the mounting portion 2 in a floating state.

Then, the ring washer 9 is housed in the elongated hole 8 of the resin fender 6, and the disc-shaped washer 10 is placed on the upper surface of the ring washer 9, and then the disc-shaped washer 10, the ring washer 9 and the fender skirt are provided. A bolt 3 is inserted into each insertion hole of the fender skirt 1, and a nut 13 is screwed into the bolt 3 protruding from the back surface of the mounting portion 2 of the fender skirt 1.

Next, when the bolt 3 or the nut 13 is tightened, the fifth
As shown in the figure, the mounting portion 7 of the resin fender 6 is pressed downward by an arcuate bead 12 protruding below a disk-shaped washer 10. As a result, the mounting portion 7 of the resin fender 6 is elastically deformed in the peripheral portion of the elongated hole 8 of the fender 6 in a state of being curved downward in the range of the gap A, and is fixed in an elastic state.

Here, the mounting portion 2 of the fender skirt 1 due to temperature change
When a displacement due to linear expansion occurs between the resin fender 6 and the mounting portion 7 of the resin fender 6, the ring washer 9 has a height that is slightly larger than the plate thickness of the resin fender 6, so that the mounting portion of the resin fender 6 is mounted. The upper surface of 7 slides on the surface of the washer 10 which is in contact with the lower surface of the bead 12, and moves in the direction of the long diameter of the long hole 8 to absorb the displacement.

Also, it is said that the bolts 3 are connected by metal comrades.
Since the mounting portion 7 of the resin fender 6 is elastically fixed, it is possible to avoid loosening of the bolts due to the creep of the resin fender 6, and the washer 10 is also made of metal, so that the rattling at a high temperature is prevented. Does not occur. Furthermore, washer 1
Since the upper surface of the mounting portion 7 of the fender 6 is pressed by the smooth bead 12 of 0, even if the fender 6 slides in the longitudinal direction, the paint applied to the upper surface of the mounting portion 7 is prevented from peeling off. Even if the paint is peeled off, since the bead 12 is formed inside the washer 10, the bead 12 is hidden by the peripheral portion of the washer 10,
The appearance will not deteriorate.

[Effect of device]

As described above, the mounting structure of the resin fender for an automobile according to the present invention has a convex bead in which the fender skirt and the resin fender fixed thereon are formed around the bolt insertion hole of the fender skirt. Therefore, when the resin fender is polymerized with a required gap provided by the above, the ring washer thicker than the plate thickness of the resin fender inserted in the long hole for inserting the bolt and the resin fender are lowered concentrically with the bolt inserting hole. Since the structure is such that it is tightened and fixed to the fender skirt with bolts and nuts via a metal washer having a protruding arc-shaped bead, even if there is a difference in relative length due to a difference in thermal expansion coefficient, the resin It is possible to completely fix the fender made without distortion or cracks. Also, because the elasticity of the resin fender is used,
There is no need to add an elastic body that is a separate part. Therefore, there are various effects that the structure is simple and the manufacturing cost is low.

[Brief description of drawings]

Fig. 1 is an external perspective view of an automobile, and Fig. 2 is II-II in Fig. 1.
FIG. 3 is an exploded perspective view of a main part, FIG. 4 is a sectional view taken along line III-III of FIG. 2, and FIG.
The sectional view taken along the line IV-IV of FIG. 6, FIG. 6 and FIG. 7 are vertical sectional views taken along the line II-II of FIG. 1 showing different conventional mounting structures. 1 ... Fender skirt, 2, 7 ... Mounting part, 3 ... Bolt, 4, 11 ... Bolt insertion hole, 5, 12 ... Bead, 6 ... Resin fender, 8 ... Long hole, 9 ... … Ring washers, 10… Metal washers, 13… Nuts,
A ... gap.

Claims (1)

[Scope of utility model registration request] 1. A fender skirt and a resin-made fender to be fixed on the fender skirt are polymerized with a convex bead formed around a bolt insertion hole of the fender skirt with a predetermined gap provided therebetween. A ring washer with a resin fender inserted into the long hole for inserting the bolt, which is thicker than the plate thickness of the resin fender, and a metal washer with an arcuate bead protruding downward on a concentric circle with the bolt insertion hole. A structure for mounting a resin-made fender for an automobile, characterized in that it is tightened and fixed to the fender skirt with a bolt and a nut via the.