JP4280911B2 - Mounting structure for rear bumper fascia for vehicles - Google Patents

Description

  The present invention relates to a mounting structure for a vehicle rear bumper fascia, and more particularly to a mounting structure for mounting a front upper portion of a bumper fascia corresponding to a lower end of a trunk lid or a rear gate to a vehicle body side.

  A bumper fascia of the vehicle rear bumper is disposed so as to cover the bumper beam, and is attached to the rear end panel via a bracket or the like. In vehicles where the lower end of the trunk lid or rear gate reaches the upper surface of the rear bumper, the upper front part of the bumper fascia is exposed when the trunk lid or rear gate is opened. This is avoided in view of beauty and the like, for example, the mounting structure shown in FIGS.

  In this rear bumper fascia mounting structure, a plurality of fixing surfaces 101a are extended downward from the front surface front part of the bumper fascia 101, and these fixing surfaces 101a are disposed in the bumper fascia 101. The bumper fascia 101 is attached to the front end of the rear end panel 104 by a bolt 105 using a nut 102a welded to the bracket 102 after being superposed on the front face and fixed by a clip 103.

  The bumper fascia 101 made of synthetic resin is manufactured by injection molding, and since it has a shape opening toward the front of the vehicle as a whole, it is die-cut forward after injection molding. It is necessary to perform die cutting while bending the surface 101a forward. Therefore, the fixing surface 101a is provided with flexibility by forming the thin portion 106 at the base (upper end) of the fixing surface 101a.

  On the other hand, apart from the mounting structure of the rear bumper fascia 101, there has also been proposed a mounting structure in which the upper front portion of the bumper fascia is engaged with the rear end panel without bolting (for example, see Patent Document 1). In the mounting structure of the rear bumper fascia described in Patent Document 1, a plurality of synthetic resin fixing clips are attached to a bumper beam fixed to the rear end panel, and a recessed portion that opens rearward is formed in each fixing clip, and a rear end is formed. A pivotable self hinge is provided as the center.

In addition, an upper rib and a lower rib are formed at the front upper part of the bumper fascia. When the lower rib of the bumper fascia is inserted into the recess of the fixing clip attached to the bumper beam from the rear, it is pressed by the upper rib of the bumper fascia. Thus, the self-hinge of the fixing clip rotates forward, and the convex portion formed on the lower surface of the self-hinge engages with the mounting hole formed on the front surface of the bumper fascia, thereby completing the mounting of the bumper fascia. .
JP 2000-38099 A

  However, the former mounting structure of the rear bumper fascia 101 has a problem in that workability is poor because it is necessary to perform a bolt tightening operation from the vehicle interior side. Moreover, since the thin part 106 of each fixed surface 101a is easy to fracture | rupture, there also existed a problem that the defect rate of the bumper fascia 101 increased as a result.

  On the other hand, the mounting structure of the latter rear bumper fascia is a relatively complicated structure that rotates the self-hinge. There is a possibility that the engagement operation accompanying the rotation of the self hinge is not reliable and the mounting of the bumper fascia is incomplete.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a mounting structure for a rear bumper fascia that can reduce the manufacturing cost by reducing the defect rate and simplifying the configuration, and can easily and reliably mount the bumper fascia.

In order to achieve the above object, according to the first aspect of the present invention, a resin bracket is fixed to a bumper mounting portion at the rear of the vehicle, and an engagement hole that opens to the rear of the vehicle is formed in the bracket. The bumper support surface extends from the lower side toward the rear of the vehicle, and the bumper support surface is raised to form a fulcrum portion, and an engagement claw is formed on the front surface of the resin bumper fascia to An engagement portion that is inserted into the engagement hole from the rear of the vehicle, the upper surface front portion of the bumper fascia is brought into contact with the fulcrum portion of the bracket, the engagement claw is separated from the bumper support surface, and is projected on the engagement claw. Is engaged with the engagement hole, and the fulcrum portion of the bracket is formed on the rear side of the bumper support surface and comes into contact with the front surface of the bumper fascia from below at a position spaced from the engagement claw rearward of the vehicle. Is.

  Therefore, after fixing the bracket to the bumper mounting part at the rear of the vehicle, place the front upper part of the bumper fascia on the bumper support surface of the bracket, and move the bumper fascia forward with a normal mounting posture. When moved, the engaging claws of the bumper fascia are inserted into the engaging holes of the bracket while sliding on the bumper support surface. Next, when the bumper fascia is changed to a normal mounting posture, the front upper part of the bumper fascia comes into contact with the fulcrum part of the bumper support surface, and the engagement claw of the bumper fascia is separated from the bumper support surface, and the engagement claw The engaging portion projecting upward engages with the engaging hole of the bracket, and rearward release is restricted.

  In this way, the engagement pawl is engaged in the bracket's engagement hole using the bumper fascia's posture change, so the bumper fascia can be attached with a simple operation that moves the vehicle forward while accompanying the posture change. In addition, since it is not necessary to elastically deform the engaging claws of the bumper fascia at this time, a large operating force is not required. Further, the engaging claws after engaging with the engaging holes are not likely to be separated unless the bumper facer is tilted forward again. Therefore, the bumper fascia can be easily and reliably attached.

  On the other hand, since the change in the posture of the bumper fascia is used, it is not necessary to give flexibility to the engaging claw of the bumper fascia or the engaging hole of the bracket. The rate can be reduced and the configuration of both members is simplified.

In addition , since the fulcrum portion of the bracket comes into contact with the front upper portion of the bumper faucet from below at a position spaced rearward from the engaging claw, the distortion of the bumper fascia is corrected.

As described above, according to the mounting structure of the rear bumper fascia for a vehicle according to the first aspect of the present invention, the manufacturing cost can be reduced by reducing the defect rate and simplifying the configuration, and the bumper fascia can be easily and reliably mounted. , moreover, to correct the distortion of the van parfait Isher by the fulcrum portion of the bracket, Ru it is possible to improve the aesthetic appearance of the van parfait doctor.

Hereinafter, an embodiment of a rear bumper fascia mounting structure embodying the present invention will be described.
1 is an exploded perspective view showing the mounting structure of the rear bumper fascia according to the present embodiment, FIG. 2 is a perspective view of the bracket as seen from the front, FIG. 3 is a perspective view of the bumper fascia as viewed from the front, and FIG. 1 is a cross-sectional view taken along the line IV-IV in FIG. 1 showing a cross-sectional shape of the mounting clip of the rear end panel of the bracket, FIG. 5 is a cross-sectional view taken along the line V-V in FIG. It is sectional drawing corresponding to FIG. 5 which shows the time of engagement of this bumper fascia.

  A bumper beam (not shown) is attached to a rear end panel 1 (bumper attachment portion) of the vehicle, and a bumper fascia 2 of a rear bumper integrally formed of a synthetic resin material is provided so as to cover the bumper beam. The opening 1a of the trunk lid formed in the rear end panel 1 reaches the upper surface of the bumper fascia 2 between left and right rear combination lamps (not shown) and follows the lower edge of the opening 1a in front of the upper surface of the center of the bumper fascia 2 The part 2a is recessed. The upper front part 2a of the bumper fascia 1 and other parts are appropriately attached to the rear end panel 1 side, and the bracket 3 is used for attaching the upper front part 2a of the bumper fascia 2 as described below.

  As shown in FIG. 1, the bracket 3 is formed in a bar shape extending in the left-right direction along the lower edge of the opening 1a of the rear end panel 1, and as shown in FIG. 4, below the weather strip 4 attached to the opening 1a. Located on the side. The bracket 3 is erected along the rear end panel 1 from the vertical panel mounting surface 5 along the rear end panel 1, the horizontal bumper support surface 6 connected to the upper end of the panel mounting surface 5, and the front end of the bumper support surface 6. Further, the bumper engaging surface 7 is formed.

  As shown in FIG. 2, the front side of the panel mounting surface 5 of the bracket 3 is provided with four rectangular clips 8 at predetermined intervals in the left-right direction, and each clip 8 is a clip formed on the rear end panel 1. The holes 9a and 9b are fitted. The bracket 3 is integrally formed of a synthetic resin material, and each clip 8 is also integrally formed with the bracket 3 so that the bracket 3 can be manufactured by one injection molding, thereby reducing the cost.

  The clip hole 9a at one location of the rear end panel 1 forms a square shape corresponding to the clip 8 of the bracket 3 to position the bracket 3 in the left and right and up and down directions, while the clip hole 9b at the other location has a rectangular shape that is long in the left and right direction. Thus, the bracket 3 is positioned only in the vertical direction to allow displacement in the horizontal direction. As a result, the bracket 3 is fixed at a normal position with respect to the rear end panel 1, and the heat shrinkage difference between the steel end rear end panel 1 and the synthetic resin bracket 3 is absorbed.

  As shown in FIGS. 1 and 5, the bumper engaging surface 7 of the bracket 3 is provided with six engaging holes 11 at the front and rear at predetermined intervals in the left-right direction, and each engaging hole 11 is a rectangle that is long in the left-right direction. It has a shape. The lower side of each engagement hole 11 is flush with the bumper support surface 6. The bumper support surface 6 includes a front-side escape portion 12a and a rear-side fulcrum portion 12b, and is gently raised from the escape portion 12a toward the fulcrum portion 12b.

  As shown in FIGS. 3 and 5, on the upper front part 2 a of the bumper fascia 2, engaging claws 13 are integrally formed at six locations so as to correspond to the respective engaging holes 11 of the bracket 3. A stopper surface 14 is erected at the base end position of the joint claw 13 over the entire upper surface front portion 2 a of the bumper fascia 2. Each engagement claw 13 protrudes forward from the front surface front portion 2 a of the bumper fascia 2, and an engagement portion 13 a protrudes upward from the front end of each engagement claw 13. The left and right dimensions of each engagement claw 13 are set slightly smaller than the left and right dimensions of the engagement hole 11 of the bracket 3, and the vertical dimension of the engagement claw 13 including the engagement portion 13 a is the same as that of the engagement hole 11 of the bracket 3. It is set slightly smaller than the vertical dimension. Therefore, as shown in FIG. 6, the engaging claw 13 can be easily inserted into the engaging hole 11 without elastically deforming in a state of being in contact with the relief portion 12 a of the bumper support surface 6. .

  Further, as shown in FIG. 5, the engaging claw 13 of the bumper fascia 2 is inserted into the engaging hole 11 of the bracket 3, so that the bumper fascia 2 is in a normal mounting posture (that is, the upper surface front portion 2a is substantially horizontal). ), The fulcrum part 12b of the bumper support surface 2a abuts on the front surface front part 2a of the bumper fascia 2 from below, so that each engaging claw 13 is separated from the escape part 12a of the bumper support surface 6, The engagement portion 13a is engaged with the upper side of the engagement hole 11 so that rearward separation is restricted.

Next, the assembly procedure of the rear bumper part in the mounting structure of the rear bumper fascia 2 configured as described above will be described.
A member such as a bumper beam is assembled to the rear end panel 1 in advance, and the bracket 3 is attached by fitting the clip 8 of the bracket 3 into the clip holes 9 a and 9 b of the rear end panel 1. Here, since the bracket 3 and each clip 8 are integrally formed as described above, the assembly work can be simplified by fixing the bracket 3 and the clips 8 to the rear end panel 1 at the same time, and the bracket shape is made accurate by integration. As a result, the mounting accuracy of the bumper fascia 2 can be improved.

  Next, the upper front part 2a of the bumper fascia 2 is placed on the bumper support surface 6 of the bracket 3, and as shown in FIG. 6, the bumper fascia 2 is moved forward while being slightly tilted forward from the normal mounting posture. Let Each engagement claw 13 is inserted into the corresponding engagement hole 11 of the bracket 3 after sliding from the fulcrum portion 12b of the bumper support surface 6 to the escape portion 12a, and the stopper surface 14 of the bumper fascia 2 is inserted into the bumper of the bracket 3. The movement of the bumper fascia 2 is restricted when it contacts the engagement surface 7. Based on the dimension setting of the engagement hole 11 and the engagement claw 13 described above, the engagement claw 13 at this time is easily inserted into the engagement hole 11 without elastic deformation.

  Next, when the bumper fascia 2 is changed to a regular mounting posture, the upper front part 2a of the bumper fascia 2 abuts on the fulcrum part 12b of the bumper support surface 6 as shown in FIG. As a result, each engagement claw 13 of the bumper fascia 2 is separated from the relief portion 12a of the bumper support surface 6, and the engagement portion 13a is engaged with the upper side of the engagement hole 11 of the bracket 3 to move backward. Withdrawal is regulated. In this state, when the other part of the bumper fascia 2 is fixed to the rear end panel 1 side, the bumper fascia 2 is prevented from being tilted forward at the same time, so that the engagement state of the engagement claws 13 with respect to the respective engagement holes 11 is maintained. Part assembly work is completed.

4 and 5, after the attachment is completed, the engagement claw 13 that fixes the upper front portion 2a of the bumper fascia 2 is concealed in the bracket 3, so that the trunk lid is opened. Also, the members such as the engaging claws 13 are not exposed and a good aesthetic appearance is ensured.
As described above, in the mounting structure of the rear bumper fascia 2 according to the present embodiment, when the bumper fascia 2 is mounted on the rear end panel 1, the engaging claw 13 is engaged with the engaging hole 11 of the bracket 3 using the change in the posture of the bumper fascia 2. Is engaged inside. Accordingly, the front surface front portion 2a of the bumper fascia 2 can be fixed to the rear end panel 1 side by an extremely simple operation of moving the bumper fascia 2 forward while changing the posture as described above. Since there is no need to elastically deform the second engaging claw 13, a large operating force is not required. Therefore, the mounting work of the bumper fascia 2 can be performed remarkably easily as compared with the prior art shown in FIGS. In addition, since the engaging claw 13 after engaging with the engaging hole 11 is not detached unless the bumper fascia 2 is tilted forward again, the engaging operation of the self hinge is uncertain. The bumper fascia 2 can be attached very reliably.

  On the other hand, since the engagement operation is performed by using the posture change of the bumper fascia 2, it is not necessary to provide flexibility to the engagement claw 13 of the bumper fascia 2 or the engagement hole 11 of the bracket 3, and both members Can be set to a shape having sufficient strength. As a result, for example, unlike the prior art shown in FIGS. 7 and 8, there is no possibility that the thin-walled portion 106 of the bumper fascia 101 is broken, so that the defect rate of the bumper fascia 2 can be reduced. Further, for example, there is no need to form a complicated clip having a self-hinge as in the prior art of Patent Document 1, and the operation of forming the bumper fascia 2 and the bracket 3 can be simplified. Therefore, the manufacturing cost can be greatly reduced due to these factors.

  In addition, because the front front portion 2a of the bumper fascia 2 is flat and has a relatively large area, it tends to be a factor that impairs aesthetics due to distortion, but distortion is corrected by the fulcrum portion 12b of the bracket 3 coming in contact from below, This problem can be prevented beforehand. Moreover, as can be seen from FIG. 5, the pressing by the fulcrum part 12 b acts on the position considerably rearward of the engaging claw 13 of the bumper fascia 2, in other words, near the center in the front-rear direction of the flat upper front part 2 a. Distortion can be effectively corrected.

Further, since the fulcrum portion 12b is gently raised on the bumper support surface 6, the fulcrum portion 12b abuts against the front surface front portion 2a of the bumper fascia 2 with a large area, resulting in further distortion of the bumper fascia 2. It can be corrected effectively.
This is the end of the description of the embodiment, but the aspect of the present invention is not limited to this embodiment. For example, in the above-described embodiment, the rear side of the bracket 3 on the bumper support surface 6 is gently raised to form the fulcrum part 12b. However, the position and shape of the fulcrum part 12b are not limited to this, and are, for example, more forward positions. The fulcrum portion 12b may be formed immediately after the engagement hole 11, or the fulcrum portion 12b may be raised in a step shape.

Moreover, in the said embodiment, although six sets of the engaging claws 13 and the engaging holes 11 were provided at predetermined intervals corresponding to the upper surface front part 2a of the bumper fascia 2, the number is not limited to this, and the bumper fascia 2 The upper surface front portion 2a may be arbitrarily changed according to the shape, length, and the like.
Further, in the above embodiment, the bracket 3 is fixed to the rear end panel 1 using the clip 8 integrally formed with the bracket 3. However, the fixing method is not limited to this, and a separate clip or screw may be used. Good.

It is a disassembled perspective view which shows the attachment structure of the rear bumper fascia of embodiment. It is the perspective view which looked at the bracket from the front. It is the perspective view which looked at the engaging claw of the bumper fascia from the front. It is the IV-IV sectional view taken on the line of FIG. 1 which shows the cross-sectional shape of the attachment clip of the rear end panel of a bracket. It is the VV sectional view taken on the line of FIG. 1 which shows the cross-sectional shape of the engagement hole of a bracket. It is sectional drawing corresponding to FIG. 5 which shows the time of engagement of the bumper fascia to a bracket. It is sectional drawing which shows the connection state of the bracket and fixed surface in the mounting structure of the rear bumper fascia of a prior art. It is sectional drawing which shows the connection state of the rear end panel and bracket in the attachment structure of the rear bumper fascia of a prior art.

Explanation of symbols

1 Rear end panel (bumper mounting part)
2 Bumper Fascia 2a Top Front 3 Bracket 6 Bumper Support Surface 11 Engagement Hole 12b Support Point 13 Engagement Claw 13a Engagement

Claims (1)

A resin-made bracket is fixed to the bumper mounting portion at the rear of the vehicle, an engagement hole that opens to the rear of the vehicle is formed in the bracket, and a bumper support surface is formed from the lower side of the engagement hole of the bracket toward the rear of the vehicle. And extending the bumper support surface to form a fulcrum portion, forming an engagement claw at the front upper surface of the resin bumper fascia and inserting it into the engagement hole of the bracket from the rear of the vehicle, An upper surface front portion of the bumper fascia is brought into contact with a fulcrum portion of the bracket, the engaging claw is separated from the bumper support surface, and an engaging portion protruding on the engaging claw is formed in the engaging hole. Engage in ,
A fulcrum portion of the bracket is formed on the rear side on the bumper support surface, and is in contact with the upper front portion of the bumper fascia from below at a position spaced rearward of the vehicle from the engagement claw. Rear bumper fascia mounting structure.

Images