JP3686544B2 - Front bumper fixing structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a structure for mounting a blow molded resin front bumper.
[0002]
[Prior art]
Conventionally, a front bumper is extended in the vehicle width direction at the front of the vehicle. This front bumper is composed of a steel bumper formed by press-molding a metal plate, an injection bumper formed by injection molding a synthetic resin, and a synthetic bumper. It is divided into hollow blow bumpers formed by blow molding resin.
[0003]
The steel bumper is shaped by a press, so the molding system is good and the variation of the molded product is small, so there is an advantage that adjustment work at the time of installation is easy, but there is a problem that the weight is large . In addition, the injection bumper is light in weight and has flexibility, so that the mounting workability is good, but there is a problem that the rigidity is lower than that of the steel bumper.
[0004]
And since the said blow bumper was formed in hollow shape, while being able to improve rigidity, weight reduction was achieved.
[0005]
[Problems to be solved by the invention]
However, since the blow bumper is a resin molded product, the variation in molding becomes large. Further, as described above, since the rigidity is high, an adjustment work at the time of attachment is required.
[0006]
That is, when the fixed position is set at the center and the end, after the center is fixed to the vehicle body, when the end is aligned with the fixed part of the vehicle body, as described above, the rigidity is high. It took a lot of work because it required a worker to bend the vehicle to the vehicle body side and a worker to fix the end while maintaining this state.
[0007]
The present invention has been made in view of such a conventional problem, and an object of the present invention is to provide a front bumper mounting structure with good mounting workability.
[0008]
[Means for Solving the Problems]
In order to solve the above-described problems, the front bumper fixing structure of the present invention includes a front bumper fixing structure for fixing a blow-molded front bumper to a vehicle body, and a bumper side bracket for fixing the front bumper to the vehicle body. site of the center of the vehicle width direction only in the region of the side is set to a length which is arranged, while fixing the bumper side bracket on an end portion of the front bumper, the central portion side of the front bumper in the bumper bracket Is fixed to the vehicle body, and a part of the bumper side bracket on the end side in the vehicle width direction of the front bumper can be formed in a temporarily fixed state in which the part is swingably supported by a bolt and a nut. Front pillars on the side of the vehicle body via brackets Fixed.
[0009]
That is, when fixing the blow-molded front bumper to the vehicle body, first, the intermediate bracket is pivotally supported on the bumper side bracket by bolts and nuts to form a temporarily fixed state, and in this state the bumper side Secure the bracket to the end of the front bumper. And the site | part by the side of the center part of the said front bumper in the said bumper side bracket is fixed to a vehicle body, and a front bumper is fixed to a vehicle body in the site | part of the center part side. Next, the intermediate bracket temporarily fixed to the end bumper portion of the front bumper is fixed to the front pillar of the vehicle body side portion.
[0010]
At this time, the molding error of the blow-molded front bumper is brought to its end, but the intermediate bracket located at the end of the front bumper and fixed to the front pillar is swingable to the bracket on the bumper side. Even if the bumper side bracket and the front pillar are misaligned due to a molding error of the front bumper, the intermediate bracket is swung to fix the front pillar. This shift is absorbed by adjusting to.
[0011]
And after fixing the said intermediate bracket to a front pillar, the said volt | bolt and nut are fastened and the said intermediate bracket is fixed to the said bumper side bracket. Then, since the bumper side bracket is fixed at the regular position, the front bumper is drawn to the regular fixed position near the front pillar.
[0012]
In addition, a work hole for fastening the bolt and the nut is secured in the front bumper in a state where the bumper side bracket fixed to the front bumper is fixed to the front pillar via the intermediate bracket.
[0013]
As a result, when the bolt and nut are fastened and the bumper side bracket is fixed at a proper position, the bolt and nut are fastened through the work hole provided in the front bumper.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a diagram showing a vehicle 1 having a front bumper mounting structure according to the present embodiment, in which a front end portion of a vehicle body 2 is shown.
[0015]
Front pillars 11 and 11 are erected on the left and right sides at the front end of the vehicle body 2, and a front panel 12 is provided between the front pillars 11 and 11. Support brackets 13 are provided at three locations on the lower edge of the front panel 12, and a vertical stay 14 is fixed to each support bracket 13 (one side). Only the stay 14 fixed to the support bracket 13 on the side is shown). A bolt hole 15 to be bolted to the support bracket 13 is formed at the upper end of the stay 14. Bolt holes 17 and 17 for bolting a headlamp bracket 16 as a bumper side bracket are formed in the stay 14. Are provided at two locations above and below. The headlamp bracket 16 is formed in a shape suitable for the headlamp 18, and circular holes 19 and 19 into which the reflector of the headlamp 18 is inserted are formed in two places. A step is formed between the circular holes 19, 19. The headlamp bracket 16 has a left left step surface 21 and a right right step surface 22 with the step as a boundary. Is formed.
[0016]
As shown in FIG. 2, a front extending portion 31 and a rear extending portion 32 extending upward are provided at the left end portion of the headlamp bracket 16 so as to be separated from each other. The bolt hole 33, 33 that matches the bolt hole 17, 17 of the stay 14 is provided in the upper and lower portions 32. The front extension 31 is provided with three bolt holes 35, which are bolted to a blow-molded hollow front bumper 34, corresponding to each bolt hole 35,. In the corresponding positions 36 of the front bumper 34, nuts (not shown) into which bolts inserted through the bolt holes 35 are screwed are planted.
[0017]
Further, as shown in FIG. 3, an upper edge flange 41, a lower edge flange 42, and a right edge flange 43 bent forward are provided on the upper edge, the lower edge, and the right edge of the headlamp bracket 16, respectively. An L-shaped upper central bracket 44 projecting from the right step surface 22 and an L projecting from the left step surface 21 are formed between the circular holes 19 and 19. A letter-shaped lower central bracket 45 is provided. In addition, an upper right extending surface 46 extending from the upper edge flange 41 and the right edge flange 43 is formed at the upper right corner of the headlamp bracket 16, and is formed at the lower right corner of the head lamp bracket 16. A right lower extending surface 47 extending from the lower edge flange 42 and the right edge flange 43 is formed. Square nuts 48,... Are welded to both the central brackets 44, 45 and the extended surfaces 46, 47. As shown in FIG. 2, the mounting holes 49,. Bolts inserted through the screw are screwed together.
[0018]
As shown in FIG. 3, an upper L-shaped bracket 51 protrudes from the upper right extending surface 46, and a lower L bracket 52 protrudes from the lower right extending surface 47. Bolt holes 53, 53 are provided in front of both L-shaped brackets 51, 52, and corresponding positions 54, 54 of the front bumper 34 corresponding to both bolt holes 53, 53 (see FIG. 2), An unillustrated nut that is inserted into the bolt holes 53 and 53 and screwed into the bolt is planted. As a result, the headlamp bracket 16 is configured such that the bolts inserted into the bolt holes 35 of the front extension portion 31 are screwed into the nuts planted in the front bumper 34, so that The right side is fixed to the center side portion of the front bumper 34, and the bolts are inserted into the bolt holes 53, 53 of the L-shaped brackets 51, 52. The bolts are screwed into the nuts planted in the front bumper 34. Thus, the right side portion is configured to be fixed to the right end side portion of the front bumper 34.
[0019]
Further, a fixing bracket 62 having bolt holes 61 and 61 opened at two upper and lower portions is extended from the right edge flange 43 of the headlamp bracket 16 so as to be spaced apart from the right edge flange 43. The intermediate bracket 63 is fixed to the bolt holes 61 in the fixing bracket 62. The intermediate bracket 63 is made of a plate-like member, and an inclined surface 64 bulges out at the center. On the inclined surface 64, stud bolts 65, 65 are projected in two places, upper and lower, and both stud bolts 65, 65 are inserted into the respective bolt holes 61, 61 of the fixing bracket 62. The nut 66 is configured to be screwed. Each of the stud bolts 65, 65 is set to a length sufficiently protruding from the fixing bracket 62 in a state where the stud bolt 65 is inserted through the fixing bracket 62, and a nut 66 is screwed to the tip. At this time, the intermediate bracket 63 forms a temporarily fixed state in which the intermediate bracket 63 is swingably supported with respect to the fixing bracket 62 of the headlamp bracket 16, and the nut 66 is tightened to the proximal end side of the stud bolt 65. In this case, the intermediate bracket 63 can be fixed to the fixing bracket 62 of the headlamp bracket 16 so as to form a fixed state.
[0020]
Further, bolt holes 72, 72 through which bolts 71 are inserted are provided at both ends of the intermediate bracket 63, and the bolt holes 72 are provided with projecting pieces 73, 73 projecting from the front pillar 11. It is provided at a matching position. Square nuts 74, 74 are welded to the projecting pieces 73, 73, and the bolts 71 inserted into the bolt holes 72, 72 of the intermediate bracket 63 are fastened, whereby the intermediate bracket 63 is moved to the front. It is configured to be fixed to the pillar 11. As a result, the head lamp bracket 16 fixed to the front bumper 34 is fixed to the vehicle body 2 via the stay 14 with the rearward extension 32 provided on the left side of the front bumper 34 at the center side. The fixing bracket 62 protruding from the right side on the end side of the front bumper 34 is configured to be fixed to the front pillar 11 on the side of the vehicle body 2 via the intermediate bracket 63.
[0021]
As shown in FIG. 2, the front bumper 34 has an attachment hole for fixing the headlamp 18 supported by the headlamp bracket 16 and a combination lamp (not shown) inserted therein. In the state where the headlamp 18 is mounted, a combination lamp mounting hole 82 for retrofitting the combination lamp is secured on the side of the headlamp 18. The combination lamp mounting hole 82 is set so as to be located at a joint portion between the intermediate bracket 63 fixed to the front pillar 11 and the fixing bracket 62 protruding from the head lamp bracket 16. In a state where the front bumper 34 is attached to the vehicle body 2, a nut 66 screwed to the stud bolt 65 of the intermediate bracket 63 can be fastened.
[0022]
In the present embodiment having the above configuration, when the blow-molded front bumper 34 is fixed to the vehicle body 2, first, stud bolts 65, 65 erected on the intermediate bracket 63 are attached to the right end of the headlamp bracket 16. The nuts 66 are inserted into the bolt holes 61, 61 of the fixing bracket 62, and the nuts 66 are screwed onto the tips thereof. The intermediate bracket 63 is swingably supported by the fixing bracket 62 of the headlamp bracket 16 and temporarily mounted. Form a stop state. In this state, the bolts inserted through the bolt holes 35 of the front extension 31 are screwed into the nuts planted in the front bumper 34, and the left end of the headlamp bracket 16 is connected to the front bumper 34. Is fixed to the center side portion of the L-shaped bracket 51, and is inserted into the bolt holes 53 of the L-shaped brackets 51, 52, and the bolts are screwed into the nuts planted in the front bumper 34, so that the right side portion thereof Is fixed to the right end side of the front bumper 34.
[0023]
Then, the rearward extension 32 at the left end of the headlamp bracket 16 is fixed to the vehicle body 2 via the stay 14 and the support bracket 13 to which the stay 14 is fixed, and the front bumper 34 is fixed at the central portion side. To do. Next, the intermediate bracket 63 temporarily fixed to the fixing bracket 62 at the right end of the headlamp bracket 16 is fixed to the projecting pieces 73 and 73 of the front pillar 11 with bolts 71.
[0024]
At this time, as shown in FIG. 4, the molding error of the blow-molded front bumper 34 is brought close to the end side, and a large gap is formed between the end of the front bumper 34 and the front pillar 11. The intermediate bracket 63 that is located on the end side of the front bumper 34 and is fixed to the front pillar 11 is supported by the head lamp bracket 16 so as to be swingable. Even when the headlamp bracket 16 and the front pillar 11 are misaligned, the intermediate bracket 63 is swung so as to be aligned with the protruding pieces 73 and 73 that are fixed to the front pillar 11. This deviation can be absorbed.
[0025]
Then, after fixing the intermediate bracket 63 to the front pillar 11, the nut 66 at the tip of the stud bolt 65 is tightened to the base end and fastened. Thereby, the intermediate bracket 63 is fixed to the head lamp bracket 16, and the head lamp bracket 16 can be fixed to a normal position with respect to the front pillar 11. Accordingly, the front bumper 34 can be pulled to a regular fixed position near the front pillar 11.
[0026]
Therefore, even if the blow-molded front bumper 34 has large molding variations and high rigidity, the fixing work can be performed without requiring an operator to bend the end of the front bumper 34 toward the vehicle body 2 side. The work can be simplified and the work time can be shortened. Further, by fastening the nut 66 to the stud bolt 65 of the intermediate bracket 63, the end portion of the front bumper 34 can be drawn to the regular fixing position near the front pillar 11, so that the gap between the vehicle body 2 and the front bumper 34 is increased. Generation of uneven gaps can be prevented, adjustment work can be facilitated, and appearance quality can be improved. By using the blow-molded front bumper 34 as in the present embodiment, it is possible to reduce the weight while increasing the rigidity of the front bumper 34.
[0027]
On the other hand, as shown in FIG. 2, the front bumper 34 has a mounting hole 81, and the headlamp 18 is fixed to the side of the headlamp 18 in a state where the headlamp 18 is fixed to the mounting hole 81. The combination lamp mounting hole 82 for mounting the lamp is configured to remain. The combination lamp mounting hole 82 is located at a joint portion between the intermediate bracket 63 fixed to the front pillar 11 and the fixing bracket 62 of the headlamp bracket 16 to which the intermediate bracket 63 is temporarily fixed. Is set to For this reason, the combination lamp mounting hole 82 can be used as a work hole for fastening the nut 66 screwed to the stud bolt 65 of the intermediate bracket 63, so that the bolt 65 from the front surface of the front bumper 34 can be used. The fastening work of the front bumper 34 can be further enhanced.
[0028]
【The invention's effect】
As described above, in the front bumper fixing structure of the present invention, when the center side of the front bumper is fixed, the molding error that is approached to the end of the front bumper is reduced by the bumper side bracket and the front pillar fixed to the front bumper. Can be absorbed by an intermediate bracket interposed therebetween, and by fastening a bolt and a nut fixing the intermediate bracket to the bumper side bracket, the bumper side bracket is fixed at a normal position, The front bumper can be pulled to a regular fixed position near the front pillar.
[0029]
Therefore, even for blow molded front bumpers with large variations in molding and high rigidity, fixing work can be performed without requiring an operator to bend the end of the front bumper toward the vehicle body side. And shortening the working time. Also, by fastening the bolts and nuts, the end of the front bumper can be pulled to the normal fixed position near the front pillar, thus preventing the occurrence of an uneven gap between the vehicle body and the front bumper. Thus, the adjustment work can be facilitated and the appearance quality can be improved. By using a blow molded front bumper, it is possible to reduce the weight while increasing the rigidity of the front bumper.
[0030]
Further, by securing a work hole for fastening the bolt and nut in the front bumper, the bolt and nut can be fastened from the front surface of the front bumper, and a front bumper mounting structure with high workability can be obtained.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view showing an embodiment of the present invention.
FIG. 2 is an exploded perspective view showing a main part of the same embodiment.
FIG. 3 is an enlarged view showing a main part of FIG. 2;
FIG. 4 is a cross-sectional view of a main part showing a state in which an intermediate bracket temporarily fixed to a headlamp bracket is coupled to a front pillar.
[Explanation of symbols]
2 Car body 11 Front pillar 16 Head lamp bracket (bumper side bracket)
34 Front bumper 63 Intermediate bracket 65 Stud bolt 66 Nut 82 Mounting hole for combination lamp (work hole)

Claims (2)

In the front bumper fixing structure that fixes the blow molded front bumper to the vehicle body,
A bumper side bracket that fixes the front bumper to the vehicle body is set to a length that is disposed only in a region lateral to the center in the vehicle width direction of the front bumper, and the bumper side bracket is fixed to an end portion of the front bumper. on the other hand,
A portion of the bumper side bracket on the center side of the front bumper is fixed to the vehicle body, and a portion of the bumper side bracket on the end portion side in the vehicle width direction of the front bumper is swung to the portion by a bolt and a nut. A front bumper fixing structure, wherein the front bumper is fixed to a front pillar on a side of the vehicle body via an intermediate bracket that can be freely supported to form a temporarily fixed state.   A work hole for fastening the bolt and the nut is secured in the front bumper in a state where the bumper side bracket fixed to the front bumper is fixed to the front pillar via the intermediate bracket. Item 1. A front bumper fixing structure according to Item 1.

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