JP5988803B2 - 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).

Also, a claw part is formed on the resin bumper, and a notch part is formed on the sheet metal fender. The claw part is engaged with the notch part, 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, there is a problem that the number of parts and the cost increase because the bumper mounting bracket is necessary. Further, when the front fender is made of a resin, there is a problem that it is difficult to ensure the assembling accuracy with a flat plate-like flange similar to the sheet metal fender, and the rigidity during assembling work and after assembling is poor. Further, there is a problem that positioning for engaging the bumper with the fender is difficult and it is difficult to ensure the surface rigidity of the bumper in a state where the bumper is assembled to the fender.

  The present invention has been made in view of the above-mentioned conventional situation, and can eliminate the mounting bracket, improve the strength of the fender and the surface rigidity of the bumper, and improve the bumper assembly workability. It is an issue to provide.

According to the present invention, the locking portion formed on the end surface of one of the resin fender and the resin bumper is locked to the locked portion formed on the end surface of one of the other components. In the vehicle bumper mounting structure in which the bumper is attached to the fender so that a boundary line between an end surface of the one component and an end surface of the other component extends in a substantially vertical direction of the vehicle.
A flange portion is formed on the end surface of the other component so as to extend toward the one component,
In the flange portion, a bulging portion that is gradually lowered from the substantially same height as the lower end of the locked portion toward the tip of the flange portion is formed,
The bulging portion is integrally formed with a rib that gradually decreases from the substantially same height as the upper end of the locked portion toward the tip of the flange portion,
An attachment recess for attaching the other part to the vehicle body is formed in a portion of the flange portion excluding the bulging portion,
The bulging portion and the mounting recess are formed alternately along the substantially vertical direction when the bumper is viewed with the fender attached .

  According to the bumper mounting structure of the present invention, when the bumper is assembled, the locking portion of one component is guided to the locked portion of the other component along the upper edge and the side surface of the rib of the other component. Therefore, the locking portion and the locked portion can be easily and reliably locked, and the assembling workability of the bumper can be improved.

Since the flange portion is formed on the end face of the other component so as to extend toward the one component, and the bulging portion and the mounting recess are alternately formed on the flange portion, the strength of the flange portion can be improved.

In addition, since one part can be supported by the upper edge of the rib, the surface rigidity of the one part can be improved.

Furthermore, since the conventional mounting bracket can be eliminated, the number of parts can be reduced and the cost can be reduced.

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 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 on the left side of the front bumper 2. It is integrally formed so as to extend toward the right end 2a.

The end surface flange 4 is formed with three sets of openings 7 to be locked portions. Each of the openings 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 opening 7a having a small height dimension h1 and a large height dimension of h2. It has a stepped slit shape composed of a large opening 7b.

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 opening 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 opening 7a and a lower bulging portion 5c extending from the same height as the lower end 7b' of the large opening 7b. It consists of and. Therefore, the upper bulging portion 5b and the lower bulging portion 5c are stepped.

Each bulging portion 5a is integrally formed with a rib 18 extending from the edge portion 7 'of the opening 7 on the side opposite to the small opening 7a toward the tip 5' side of the flange portion 5. Yes. 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 opening 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. In the present invention, the vehicle body side includes a 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 6 and 6 are formed inwardly at the left and right end portions 2a and 2a of the front bumper 2, and projecting pieces 8 serving as locking portions are integrally formed on the end surface flange 6. Yes. The projecting piece 8 has a shape and size capable of being inserted through the large opening 7b of the opening 7 and a locking piece 8a formed so as to protrude forward from the end surface flange 6 by the thickness of the end surface flange 6; A stopper portion 8b is formed so as to cross the lower edge of the end face flange 6 and abuts against a boundary portion between the small opening 7a and the large opening 7b in the assembled state. A side surface 8a 'of the locking piece 8a is inclined so as to be tapered.

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

In order to assemble the front bumper 2 to the front fender 1, the side surface 8 a ′ of the locking piece 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 toward the front fender 1 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 piece 8 a and the opening 7 large. The opening 7 b is inserted and brought 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 the direction b intersecting the insertion direction a, specifically, upward (UPR direction) so that the locking piece 8a contacts the lower edge portion 7c of the small opening 7a. . Then, the outer surface 6 ′ of the end surface flange 6 of the front bumper 2 abuts on the outer surface 4 ′ of the end surface flange 4 of the front fender 1, and the inner surface 8a ″ of the locking piece 8a is the lower edge portion 7c of the small opening 7a. Further, the connecting portion 6a to the end surface flange 6 of the locking portion 8a enters the small opening 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 piece 8a of the front bumper 2 is along the side surface 18' of the rib 18 of the front fender 1. 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 protruding piece 8 can be easily and reliably locked to the opening 7, and the front fender of the front bumper 2 can be engaged. The assembly workability to 1 can be improved.

  Further, since the side surface 8a 'of the locking piece 8a of the protruding piece 8 is a tapered inclined surface, the protruding piece 8 can be easily and reliably locked to the opening 7 from this point.

  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 piece 8a is brought into contact with the lower edge portion 7c of the small opening 7a by causing the connecting member 6a to enter the small opening 7a, the front bumper 2 is attached to the front fender 1. Can be firmly bonded with good dimensional accuracy.

In this case, the connecting portion 6a of the front bumper 2 connected to the end surface flange 6 of the engaging portion 8a can be connected or removed simply by sliding in the small opening 7a, so that the engaging piece is elastically deformed. Compared to the conventional structure where coupling and removal are performed, the coupling force is hardly weakened by repeated 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.

In addition, as described above, the flange portion 5 is formed on the front fender 1 and the front bumper 2 is directly locked thereto, so that the conventional mounting bracket can be eliminated, and the number of parts and the cost can be reduced. Can contribute.

In the above embodiment, the front fender 1 is formed with the flange portion 5 having the bulging portion 5a and the mounting recess 5d, the front fender 1 is formed with the opening 7 as the locked portion, and the front bumper 2 Although the protruding piece 8 as the locking portion is formed, conversely, the flange portion and the locked portion may be formed on the front bumper, and the locking portion may be formed on the front fender.

1 Front fender (the other part)
2 Front bumper (one part)
4 End flange (end face of the other part)
5 flange portion 5a bulging portion 5d mounting recess 6 end surface flange (end surface of one part)
7 Opening (locked part)
7a ', 7b' lower end (lower end of the locked portion)
8 Projection (locking part)
8 Ribs

Claims (1)

Wherein said bumper by engaging in an engaged portion formed on the end surface of any other part or one part of a locking portion formed on an end surface of the bumper made of a resin of the fender and the resin In the vehicle bumper mounting structure that is mounted on the fender so that the boundary line between the end surface of one component and the end surface of the other component extends substantially in the vehicle vertical direction ,
A flange portion is formed on the end surface of the other component so as to extend toward the one component,
In the flange portion, a bulging portion that is gradually lowered from the substantially same height as the lower end of the locked portion toward the tip of the flange portion is formed,
The bulging portion is integrally formed with a rib that gradually decreases from the substantially same height as the upper end of the locked portion toward the tip of the flange portion,
An attachment recess for attaching the other part to the vehicle body is formed in a portion of the flange portion excluding the bulging portion,
The vehicle bumper mounting structure according to claim 1, wherein the bulging portions and the mounting recesses are alternately formed along the substantially vertical direction when the bumper is viewed in a state of being mounted on a fender .

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