JP6033623B2 - Bumper mounting structure of vehicle - Google Patents

Description

  The present invention relates to a vehicle bumper mounting structure in which a bumper is mounted on a left and right fender of an automobile.

  As a bumper mounting structure for mounting a front bumper over the left and right front fenders of an automobile, for example, a flange portion is bent at the front end surface of a sheet metal fender, and a bumper mounting bracket is fixed to the flange portion. There is one in which a flange formed on the end face of a resin bumper is fixed to the bracket (see Patent Document 1).

In addition, a notch is formed in the resin bumper, a claw is formed in the sheet metal fender, the claw is engaged with the notch, and the bumper is moved backward to attach the bumper to the fender. (See Patent Document 2).

JP 2008-105474 A JP 2009-161182 A

  In the prior art of Patent Document 1, a bumper mounting bracket is required, and there is a problem that the number of parts and the cost increase accordingly.

Further, in the prior art of Patent Document 2, so-called claw fitting is adopted in which the claw portion of the fender is strongly pressed against the bumper and elastically deformed to engage with the notch portion. When the bumper is repeatedly attached and detached, the notch portion of the resin bumper is scraped off by the claws of the sheet metal fender, and the elastic force of the claws is weakened. As a result, there is a problem that the coupling force is lowered.

  The present invention has been made in view of the above-described conventional situation. The mounting bracket can be eliminated, the coupling force hardly decreases even when the bumper is repeatedly attached and detached, and the assembling workability of the bumper can be further improved. It is an object to provide a vehicle bumper mounting structure.

The present invention relates to a vehicle bumper mounting structure in which a resin bumper is mounted on a resin fender.
At the vehicle width direction side end portion of the bumper and the vehicle front end portion of the fender, a mounting end surface facing each other is bent inward in the vehicle width direction,
On the attachment end surface of either one of the bumper and the fender, a locking piece having a locking portion and a stopper portion is formed to protrude, and the side surface of the locking portion is a tapered inclined surface,
A locking hole having a large hole into which the locking piece can be inserted and a small hole having a step following the large hole is formed on the mounting end face of the other component of the bumper and the fender, and the other A flange portion extending toward the side end portion of the one component is formed on the mounting end surface of the component, and the flange portion extends from the opening edge of the large hole to the distal end side of the flange portion, and the locking piece is Form a convex guide that guides to the locking hole,
The locking piece is brought into contact with the guide portion and inserted into the locking hole, and the one and the other parts are slid relative to each other in the direction intersecting the insertion direction, so that the stopper portion is inserted into the locking hole. By contacting the stepped portion, the one and the other parts are in a normal assembled state, and the mounting end faces of the one and the other parts are combined.

  According to the bumper mounting structure of the present invention, after inserting the locking piece protrudingly formed on the mounting end surface of one part of the bumper and the fender into the locking hole formed on the mounting end surface of the other part, Since it is slid in the direction crossing the insertion direction, the mounting bracket can be eliminated, the number of parts can be reduced, and the cost can be reduced.

Also, by sliding the two parts relatively, the one and other parts are in a properly assembled state, and the mounting end surfaces of the one and other parts are joined together, so that the claw scrapes the mating member. In addition, since the elastic force of the nail is not weakened, the coupling force is hardly weakened even when the bumper is repeatedly attached and detached for maintenance or the like.

Furthermore, since the guide part for guiding the locking piece to the locking hole is formed on the other part, positioning for engaging the bumper with the fender is easy, and the assembling workability can be improved.

It is the perspective view seen from the front of the automobile by which the bumper attachment structure by Example 1 of the present invention was adopted. It is an exploded view of the bumper mounting structure. It is a perspective view of the fender of the said bumper attachment structure. FIG. 3 is a sectional front view of the bumper mounting structure (sectional view taken along line IV-VI in FIG. 2). FIG. 5 is a cross-sectional side view of the bumper mounting structure (a cross-sectional view taken along line VV in FIG. 2). FIG. 3 is a cross-sectional side view of the bumper mounting structure (a cross-sectional view taken along line VI-VI in FIG. 2). FIG. 7 is a sectional side view of the bumper mounting structure (sectional view taken along line VII-VII in FIG. 2).

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

  1 to 7 are views for explaining a vehicle bumper mounting structure according to a first embodiment of the present invention.

  In the figure, 1 is a left and right resin front fender (the other part) disposed at the front of the automobile, and 2 is bridged to the front end portions 1a and 1a of the left and right front fenders 1 and 1. A resin-made front bumper (one part). Reference numeral 3 denotes an engine hood for opening and closing the engine room.

  An end surface flange (attachment end surface) 4 is formed at the front end 1a of the front fender 1 so as to bend inward in the vehicle width direction. Further, at the inner end of the end surface flange 4, a flange portion 5 is provided at the front bumper. 2 are integrally formed so as to extend toward the left and right end portions 2a.

The end surface flange 4 is formed with three sets of locking holes 7 to be locked portions. Each of the locking holes 7 is formed in a horizontally long shape extending in the vertical direction (UPR direction) along the end face flange 4 and communicates with a small hole 7a having a small height dimension h1 and a height dimension h2. It consists of a large large hole 7b. The locking hole 7 has a stepped slit shape in which the upper ends of the small hole 7a and the large hole 7b are the same height, and the lower end 7b 'of the large hole 7b is positioned below the lower end 7a' of the small hole 7a.

In the flange portion 5, three sets of bulging portions 5 a are formed so as to gradually become lower from the substantially same height as the lower end of the locking hole 7 toward the tip 5 ′ side of the flange portion 5. . Specifically, the bulging portion 5a includes an upper bulging portion 5b extending from the same height as the lower end 7a 'of the small hole 7a and a lower bulging portion 5c extending from the same height as the lower end 7b' of the large hole 7b. It is configured. Therefore, the upper bulging portion 5b and the lower bulging portion 5c are stepped.

Each bulging portion 5a is integrated with a rib (guide portion) 18 extending from the edge 7 'of the locking hole 7 on the side opposite to the small hole 7a toward the tip 5' of the flange portion 5. Is formed. The rib 18 is formed so as to gradually become lower from the substantially same height as the upper end of the edge portion 7 ′ of the locking hole 7 toward the tip 5 ′ side.

  A portion of the flange portion 5 excluding the bulging portion 5a is an attachment recess 5d for attaching the front fender 1 to the vehicle body side. A bolt hole 5e is formed in the mounting recess 5d, and is fastened and fixed to the vehicle body side by a bolt 9. The flange portion 5 may be attached to the headlamp.

  In this way, the bulging portion 5a and the mounting recess 5d are alternately formed in the flange portion 5 in the vertical direction of the flange portion 5 (UPR direction).

  Further, end flanges (mounting end surfaces) 6 and 6 are formed inwardly at the left and right end portions 2a and 2a of the front bumper 2, and the end surface flange 6 has a locking piece 8 serving as a locking portion. Are integrally formed. The locking piece 8 has a shape and size that allows the large hole 7b of the locking hole 7 to be inserted, and the locking portion 8a is formed so as to protrude forward from the end surface flange 6 by the thickness of the end surface flange 6. And a stopper portion 8b which is formed so as to cross the lower edge of the end surface flange 6 and abuts on a boundary portion between the small hole 7a and the large hole 7b in the assembled state. As shown in FIG. 6, the engaging portion 8a is connected to the end surface flange 6 by a connecting portion 6a, and as shown in FIG. 2, the side surface 8a 'of the engaging portion 8a is tapered. It is inclined to.

Here, as shown in FIG. 7, the height dimension h2 of the large hole 7b of the locking hole 7 is set to be slightly larger than the height dimension t2 of the locking portion 8a of the locking piece 8, and FIG. As shown, the height dimension h1 of the small hole 7a is set slightly larger than the thickness dimension t1 of the connecting portion 6a to the end surface flange 6 of the locking portion 8a. The lateral dimension of the large hole 7b and the small hole 7a is set larger than the lateral dimension of the locking portion 8a.

In order to assemble the front bumper 2 to the front fender 1, the side surface 8 a ′ of the locking portion 8 a formed on the front bumper 2 slides on the side surface 18 ′ of the rib 18, and the lower edge of the end surface flange 6 is the rib 18. The front bumper 2 is moved to the front fender 1 side in the insertion direction a so that the upper end surface of the front bumper 1 slides, and the outer surface 6 ′ of the end surface flange 6 of the front bumper 2 is connected to the locking portion 8 a and the locking hole 7. The large hole 7b is inserted into contact with the outer surface 4 'of the end surface flange 4 of the front fender 1. Subsequently, the front bumper 2 is slid in a direction b intersecting the insertion direction a, specifically, upward (UPR direction) so that the locking portion 8a contacts the lower edge portion 7c of the small hole 7a. Then, the outer surface 6 'of the end surface flange 6 of the front bumper 2 contacts the outer surface 4' of the end surface flange 4 of the front fender 1, and the inner surface 8a '' of the locking portion 8a is in contact with the lower edge portion 7c of the small hole 7a. Further, the connecting portion 6a to the end surface flange 6 of the locking portion 8a enters the small hole 7a. As a result, the front bumper 2 is firmly coupled to the front fender 1.

  According to the bumper mounting structure according to this embodiment, when the front bumper 2 is assembled to the front fender 1, the side surface 8a 'of the locking portion 8a of the front bumper 2 is along the side surface 18' of the rib 18 of the front fender 1. Furthermore, since the lower surface of the end flange 4 of the front fender 1 is guided by the upper surface of the rib 18, the locking piece 8 can be easily and reliably locked in the locking hole 7, and the front bumper Assembling workability to the front fender 2 can be improved.

  Further, since the side surface 8a 'of the locking portion 8a of the locking piece 8 is a tapered inclined surface, the locking piece 8 can be easily and surely inserted into the locking hole 7. From this point also, the assembling work of the bumper 2 is possible. Can be improved.

  Further, the outer surface 6 'of the end surface flange 6 of the front bumper 2 is brought into contact with the outer surface 4' of the end surface flange 4 of the front fender 1, and the front bumper 2 is slid upward to the end surface flange 6 of the locking portion 8a. Since the inner surface 8a ″ of the locking portion 8a is brought into contact with the lower edge portion 7c of the small hole 7a by allowing the connecting portion 6a to enter the small hole 7a, the front bumper 2 is dimensioned to the front fender 1. It is possible to bond with high accuracy and strength.

In this case, the connecting portion 6a portion of the front bumper 2 with respect to the end face flange 6 of the locking portion 8a can be connected or removed simply by sliding in the small hole 7a. Therefore, compared with the conventional structure that removes, the coupling force is hardly weakened by repeating this coupling and removal.

Further, the flange portion 5 is formed at the front end portion of the front fender 1 so as to extend toward the front bumper 2, and the bulging portion 5a and the mounting recess portion 5d are alternately formed on the flange portion 5. The strength and rigidity of the front end of the front fender 1 can be greatly improved.

Furthermore, since the front bumper 2 is supported from the inside by the upper end edge of the rib 18, the surface rigidity of the front bumper 2 can be greatly improved.

Further, as described above, since the locking piece 8 formed on the end surface flange 6 of the front bumper 2 is directly coupled to the locking hole 7 formed on the end surface flange 4 of the front fender 1, Brackets can be eliminated, contributing to a reduction in the number of parts and costs.

In the above embodiment, the locking hole 7 is formed in the front fender 1 and the locking piece 8 is formed in the front bumper 2, but conversely, the locking hole is formed in the front bumper and the front fender is formed. A locking piece may be formed.

Moreover, in the said Example, although the front bumper 2 was slid to the direction orthogonal to the insertion direction to the front fender 1, it is not necessary to slide to the orthogonal direction, and what is necessary is just to slide to the direction crossing the insertion direction.

1 Fender 2 Bumper 4 End flange (Fender mounting end face)
6 End surface flange (Bumper side mounting end surface)
7 Locking hole 8 Locking piece 18 Rib (guide part)
a Insertion direction b Crossing direction

Claims (1)

In a vehicle bumper mounting structure in which a resin bumper is attached to a resin fender,
At the vehicle width direction side end portion of the bumper and the vehicle front end portion of the fender, a mounting end surface facing each other is bent inward in the vehicle width direction,
On the attachment end surface of either one of the bumper and the fender, a locking piece having a locking portion and a stopper portion is formed to protrude, and the side surface of the locking portion is a tapered inclined surface,
A locking hole having a large hole into which the locking piece can be inserted and a small hole having a step following the large hole is formed on the mounting end face of the other component of the bumper and the fender, and the other A flange portion extending toward the side end portion of the one component is formed on the mounting end surface of the component, and the flange portion extends from the opening edge of the large hole to the distal end side of the flange portion, and the locking piece is Form a convex guide that guides to the locking hole,
The locking piece is brought into contact with the guide portion and inserted into the locking hole, and the one and the other parts are slid relative to each other in the direction intersecting the insertion direction, so that the stopper portion is inserted into the locking hole. A bumper mounting structure for a vehicle, wherein the one and the other parts are brought into a normal assembled state by being brought into contact with the stepped portion, and the mounting end faces of the one and the other parts are coupled.

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