JP2008265567A - Vehicular bumper structure and its mounting method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To facilitate the alignment and installation of bumpers with heavy weight and rigidity when vertically joining a plurality of columns of the bumpers in parallel in bumper structure for a vehicle. <P>SOLUTION: The bumper structure for a vehicle comprises bumper members extending in the car-width direction and vertically arranged in a plurality of columns in parallel in which at least a first bumper member 1 and a second bumper member 6 are vertically arranged in parallel, a first plate member 16 having a first engagement hole 18 and adhered to the back side of the first bumper member 1, and a second plate member 17 having a second engagement hole 19 at a position corresponding to the first engagement hole 18 and adhered to the back side of the second bumper member 6 to join the first plate member 16. The first plate member 16 and the second plate member 17 are engaged to align the respective surfaces of the first bumper member 1 and the second bumper member 6. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a bumper structure and a mounting method for the bumper, which can be easily corrected only by correcting small parts when a bumper of a vehicle is mounted in a plurality of stages.

  Conventionally, as a bumper structure of a vehicle, a standard one in which an integrated bumper is attached to a lower portion of a cabin is standard. Recently, however, as the size of the engine has increased, the space occupied by the chassis has increased, and it has become necessary to install a wide bumper vertically below the cabin. For this reason, the bumper tends to increase in size and weight, and a bumper tee for attaching the bumper to the vehicle body needs to have a high strength. On the other hand, it is necessary to provide an air intake for engine cooling or cabin air conditioning at the bumper installation position.

  Patent Document 1 (Japanese Utility Model Publication No. 3-39322) discloses a bumper structure for meeting the above needs. This bumper structure will be described with reference to FIG. In FIG. 5, a reinforcing plate S composed of an upper-side reinforcing plate 01 and a lower-side reinforcing plate 02 that are arranged in parallel with each other with a gap T between them is formed on the back surface of the bumper 04. In addition, on the left and right sides of the reinforcing plate S, bumpasties 03 and 03 are attached. The upper-side reinforcing plate 01 and the lower-side reinforcing plate 02 are formed in a U-shaped cross section, and the left and right end portions are curved to the back side.

The bumper tee 03 is formed in a bifurcated shape straddling the back surface of the upper-side reinforcing plate 01 and the back surface of the lower-side reinforcing plate 02 and is fixed to the back surfaces of both reinforcing plates, and the upper-side reinforcing plate 01 and the lower-side reinforcing plate 02 The reinforcing plate S is strengthened, and the reinforcing plate S is connected to the body of the vehicle body. A cooling air opening (not shown) is provided in a portion located at the interval T of the bumper 04.
When forming a bumper by press working, the size of the workpiece is limited. Therefore, when it is necessary to increase the size of the bumper, it is necessary to take a method in which the bumper is divided and formed and arranged in two upper and lower stages on the front surface of the vehicle.

  A conventional example of a configuration in which bumpers are arranged in two upper and lower stages will be described with reference to FIG. In FIG. 6, the bumper body 011 is formed in a U-shaped cross section by bending the side edge of one horizontally long plate to the back side, and the left and right ends are formed to be curved to the back side. A step bumper 012 is screwed to the center of the upper end of the bumper body 011. A resin bumper 013 is provided on both sides of the step bumper 012. A reinforcing bumper 013 reinforcing plate 014 is provided on the back side of the decoration bumper 013. Is attached. The decorative bumper 013 and the reinforcing plate 014 are screwed to each other and then screwed to the upper flange portion of the bumper body 011.

Japanese Utility Model Publication No. 3-39322

  In the configuration of Patent Document 1, since the bumper is supported by a large bumper tee 03, the mounting strength of the bumper can be improved. However, the bumper tee 03 itself is enlarged, and a large space is required between the bumper and the vehicle body. In addition, there is a problem in that the weight of bumper-related parts is increased.

  In addition, the bumper structure shown in FIG. 6 is an attachment structure for attaching a light and short decorative part to the upper end of the bumper body 011. In the case of attaching a rigid bumper that has a weight across the entire width of the vehicle. Is not applicable. Further, in the mounting structure shown in FIG. 6, an air intake for engine cooling or cabin air conditioning cannot be provided between the upper and lower bumpers.

  In order to attach a heavy and heavy bumper above the bumper body 011, it is conceivable to join the flange portions formed at the upper and lower ends of each bumper and extending toward the rear of the vehicle. However, as the components of the bumper itself increase in size, there is a problem that it is not easy to ensure the processing accuracy of the flange portion of the bumper because the amount of springback generated after molding by press processing increases. . For this reason, conventionally, when a set of bumpers are joined together at the flange portion, it is necessary to modify the entire bumper after joining, and this modification work takes time.

  Further, since the left and right end portions of the bumper are formed to bend toward the back side, the amount of spring back after press working is increased. The shape after molding is set in anticipation of these springback amounts, but the amount of springback varies depending on the production lot even if the material of the bumper member is the same, so it is difficult to predict the exact shape after springback. is there.

  In view of the problems of the prior art, the present invention provides each bumper member with a spring back after press working when the bumper member is divided and formed, and a heavy and highly rigid bumper member is joined in a plurality of stages in the vertical direction. Even when it is necessary to correct the attachment position of a member, it is an object to simplify the correction work by only correcting a small part. Another object of the present invention is to facilitate alignment of the surfaces of a plurality of bumpers joined in the vertical direction.

In order to achieve such an object, the vehicle bumper structure of the present invention includes:
In the bumper structure of the vehicle,
A bumper member that extends in the vehicle width direction and is arranged in a plurality of stages in the vertical direction, and at least a first bumper member and a second bumper member are arranged in parallel in the vertical direction;
A first plate member fixed to the back side of the first bumper member and having a first engagement hole;
A second plate member fixed to the back side of the second bumper member, joined to the first plate member, and having a second engagement hole at a position corresponding to the first engagement hole; Have
The first plate member and the second plate member are engaged to align the surfaces of the first bumper member and the second bumper member.

  In the bumper structure of the present invention, when the first bumper member and the second bumper member are joined, the first plate member and the second plate member respectively fixed to the back surfaces of the bumper members are engaged. Thus, the bumper members can be joined to each other while allowing the first bumper member and the second bumper member to be aligned.

  The left and right ends of the bumper member are usually formed to bend toward the back side during press working, but there is a large amount of springback at both ends. Further, due to the spring back of the flange portion formed at the upper and lower ends of the bumper, an inclination or deviation occurs in the joining position relationship between the first bumper member and the second bumper member. In the present invention, even in such a case, the joining position relationship between the first bumper member and the second bumper member can be corrected by the correction operation of only the first plate member and the second plate member. Therefore, since only a small part needs to be corrected as compared with the bumper member, the correction work can be simplified.

  In the bumper structure of the present invention, preferably, the first plate member and the second plate member are fastened with bolts and nuts via the first engagement hole and the second engagement hole, The first bumper member and the second bumper are configured such that at least one of the first engagement hole and the second engagement hole has a larger diameter than the bolt diameter so that a gap is provided between the first and the second engagement holes. It is good to comprise so that surface position shift with a member can be adjusted.

  In the above configuration, since the first plate member and the second plate member are fastened by the bolt and the nut, the engagement operation of the first plate member and the second plate member can be easily performed. In addition, at least one of the first engagement hole and the second engagement hole has a large diameter with respect to the bolt diameter so that a gap is provided between the first engagement hole and the second engagement hole. With the bolts inserted in the joint holes, the surfaces of the first bumper member and the second bumper member are aligned, and then tightened and fixed with nuts. In this manner, the surface alignment operation between the first bumper member and the second bumper member is facilitated.

  In the bumper structure of the present invention, preferably, the first plate member and the second plate member are curved in the vicinity of both left and right end portions formed by bending the first bumper member and the second bumper member on the back side. It is advisable to provide it. The first plate member and the second plate member are provided in the vicinity of the left and right ends of the bumper member having a large spring back amount after the press working, and the two plate members are joined after alignment is performed by correcting the spring back amount. Therefore, it is possible to make a correction by correcting the amount of spring back.

The mounting method of the vehicle bumper structure of the present invention is
In the mounting method of a vehicle bumper structure in which a plurality of bumper members are mounted side by side in parallel in the vertical direction,
A plurality of bumper members extending in the vehicle width direction and arranged in parallel in the vertical direction so that the plurality of plate members provided on the upper and lower ends of the bumper members face each other;
The plurality of plate members facing each other after the surfaces of the plurality of bumper members are aligned are joined to each other.

  In the method of the present invention, the plurality of plate members provided on each of the plurality of bumper members arranged in the vertical direction face each other, align each surface of the plurality of plate members, and then face each other. Since they are joined together, it is possible to eliminate the surface position deviation of each bumper member due to the spring back after the press working. Further, the inclination of the bumper member can be easily corrected only by correcting the plate member.

  According to the bumper structure of the present invention, the bumper member extends in the vehicle width direction and is arranged in a plurality of stages in the vertical direction, and at least the first bumper member and the second bumper member are arranged in parallel in the vertical direction. A first plate member fixed to the back side of one bumper member and having a first engagement hole; and a first plate member fixed to the back side of the second bumper member and joined to the first plate member; A second plate member having a second engagement hole at a position corresponding to the joint hole, and engaging the first plate member and the second plate member, Even if positional deviation or inclination occurs between a plurality of bumper members arranged in parallel in the vertical direction due to a spring back after the bumper is pressed by aligning the respective surfaces with the second bumper member The first plate member of a small part compared to the bumper member and It requires only correction work only two plate members, it is possible to simplify the correction work.

  Further, according to the mounting method of the present invention, the plurality of bumper members extend in the vehicle width direction and are arranged in parallel in the vertical direction so that the plurality of plate members provided on the upper and lower ends of the bumper members face each other. Aligning the surfaces of the bumper members after bonding the surfaces of the bumper members to each other eliminates misalignment of the surface of the bumper members due to springback after pressing the bumper members. In addition, the inclination and the like of the bumper member can be easily corrected only by correcting the plate member.

Hereinafter, the present invention will be described in detail with reference to embodiments shown in the drawings. However, the dimensions, materials, shapes, relative arrangements, and the like of the component parts described in this embodiment are not intended to limit the scope of the present invention to that unless otherwise specified.
(Embodiment 1)

  Next, a first embodiment of the present invention will be described with reference to FIGS. 1 is a perspective view of the overall configuration of the bumper according to the present embodiment, FIG. 2 is a partial plan view seen from the direction A in FIG. 1, FIG. 3 is a cross-sectional view taken along line BB in FIG. These are sectional drawings which follow the CC line in FIG.

  In FIG. 1, the bumper body 1 is formed in a U-shaped cross section by bending the side edge to the back side and providing a flange portion 11, and the left and right end portions 13 of the bumper body 1 are curved to the back side. Is formed. As shown in FIG. 4, a step bumper 12 is fixed to a central upper end of the bumper main body 1 with a bolt 21 so that a person can get on the foot with this step. Further, at both left and right ends of the bumper body 1, holes 14 for attaching a headlight are provided in the upper opening and fog lights are attached in the lower opening.

  As shown in FIG. 2, plate members 16 are fixed to the left and right end portions 13 of the bumper body 1 on the back side of the flange portion 11 in the horizontal direction by spot welding w. The plate member 16 has a substantially U-shaped cross section in the vehicle width direction, is provided with a flange portion 16a to increase rigidity, and is fixed to the flange portion 11 with its lower side opened. The plate member 16 has an engagement hole 18 for bolt connection. Further, as shown in FIG. 3, an L-shaped plate member 17 having a joint portion oriented in the horizontal direction is fixed to the lower end portion of the end reinforcing plate 5, and is engaged with the joint portion of the plate member 17. A hole 19 is formed.

  On the upper part of the bumper body 1 having such a configuration, a resin-made central bumper cover 2 and a metal central reinforcing plate 3 provided on the back side of the central bumper cover 2 to reinforce the central bumper cover 2, and a central bumper cover 2, an end bumper cover 4 made of resin, and an upper bumper 6 composed of a metal end reinforcing plate 5 provided on the back side of the end bumper cover 4 to reinforce the end bumper cover 4. Is attached.

  Hereinafter, the procedure for attaching the upper bumper 6 to the bumper body 1 will be described step by step with reference to FIG. First, end reinforcing plates 5 are attached to the left and right ends of the bumper body 1. That is, the end reinforcing plate 5 is coupled to the upper flange portion 11 of the bumper body 1 by the bolts 22. Further, as shown in FIG. 3, the plate member 16 fixed to the upper flange portion 11 near the end portion 13 of the bumper body 1 and the plate fixed to the lower portion of the end portion reinforcing plate 5 at a position facing the plate member 16. The member 17 faces.

  Then, the bolts 23 are inserted into the engagement holes 18 provided in the plate member 16 and the engagement holes 19 provided in the plate member 17. Then, the nut 24 is screwed into the bolt 23 to fasten the plate member 16 and the plate member 17. At this stage, the nut 24 is loosened so that the position adjustment between the plate member 16 and the plate member 17 is possible. The engagement holes 18 and 19 have a larger hole diameter than the diameter of the bolt 23, and are configured to form a gap between the hole diameter and the bolt 23.

  Next, the central reinforcing plate 3 is fastened to the upper flange portion 11 of the bumper body 1 with bolts 25 and fastened to the end reinforcing plate 5 with screws 26. Next, the central bumper cover 2 is fastened to the central reinforcing plate 3 with screws 27. Next, the left and right end bumper covers 4 are fastened to the central reinforcing plate 3 with screws 28 and fastened to the end reinforcing plate 5 with screws 29. As a result, the upper bumper 6 is attached to the upper portion of the bumper body 1.

  Next, alignment is performed so that the surface 1 a of the bumper body 1 and the surface 4 a of the end bumper cover 4 do not shift. As described above, the engagement holes 18 and 19 have a larger hole diameter than the bolt 23, and a gap is formed between the hole diameter and the bolt 23. Therefore, the relative position between the surface 1a of the bumper body 1 and the surface 4a of the end bumper cover 4 can be adjusted by the gap. After the bumper body 1 and the end bumper cover 4 are aligned, finally, the plate members 16 and 17 whose surfaces are aligned are fixed by tightening the nut 24.

  Since both ends of the bumper body 1 are formed to bend toward the back side, the amount of spring back after press working is increased. Moreover, due to the spring back of the curved portions at both ends, the spring back of the flange portion 11 formed at the upper and lower ends of the bumper body 1 occurs. Due to these springbacks, displacement of the surface 1a of the bumper body 1 and the surface 4a of the end cover bumper 4 occurs (for example, displacement in the direction of arrow a in FIG. 3), or inclination of the upper bumper 6 occurs. There is a fear.

However, in the present embodiment, the inclination of the upper bumper 6 can be corrected by correcting the relative positional relationship between the plate member 16 and the plate member 17, and the engagement holes 18 and 19 and the bolts 23 can be fixed. Using the gap between them, the surface 1a of the bumper body 1 and the surface 4a of the end bumper cover 4 can be aligned.
As shown in FIG. 4, an air intake opening 15 is provided between the step bumper 12 attached to the central upper end of the bumper body 1 and the central bumper cover 2 of the upper bumper 6.

As described above, according to the present embodiment, the central reinforcing plate 3 and the end reinforcing plate 5 are provided. If the mounting state of the bumper 6 has a defect such as surface displacement or inclination, the mounting state of the upper bumper 6 can be corrected to a normal state by correcting the mounting state of the plate member 16 or the plate member 17. .
Therefore, since the correction of the mounting state of the upper bumper 6 can be performed only by correcting the plate member 16 or the plate member 17 which is a small part, the correction work is facilitated.

  Further, according to the present embodiment, the plate member 16 attached to the bumper body 1 side which is heavy, large and has high rigidity is formed in a U-shaped cross section and is provided with the flange portion 16a. There is an effect that it is easy to match the 5 side to the surface of the bumper body 1 side.

  According to the present invention, in the bumper structure of a vehicle, when a heavy bumper is attached to the upper part of the bumper body, it is possible to realize a bumper structure that makes it easy to attach the upper bumper only by correcting small parts. it can.

It is a perspective view showing the whole bumper composition concerning a 1st embodiment of the present invention. It is an arrow line view which follows the A line in FIG. It is sectional drawing which follows the BB line in FIG. It is sectional drawing which follows the CC line | wire in FIG. It is a perspective view which shows the bumper structure of the conventional vehicle. It is a perspective view which shows the bumper structure of another conventional vehicle.

Explanation of symbols

1 Bumper body (first bumper member)
DESCRIPTION OF SYMBOLS 1a Bumper body surface 2 Central bumper cover 3 Central reinforcing plate 4 End bumper cover 4a End bumper cover surface 5 End reinforcing plate 6 Upper bumper (second bumper member)
11 Flange portion 16 Plate member (first plate member)
17 Plate member (second plate member)
18 engagement hole (first engagement hole)
19 Engagement hole (second engagement hole)
23 bolts 24 nuts

Claims (4)

In the bumper structure of the vehicle,
A bumper member that extends in the vehicle width direction and is arranged in a plurality of stages in the vertical direction, and at least a first bumper member and a second bumper member are arranged in parallel in the vertical direction;
A first plate member fixed to the back side of the first bumper member and having a first engagement hole;
A second plate member fixed to the back side of the second bumper member, joined to the first plate member, and having a second engagement hole at a position corresponding to the first engagement hole; Have
The vehicle is characterized in that the first plate member and the second plate member are engaged to align the respective surfaces of the first bumper member and the second bumper member. Bumper structure. The first plate member and the second plate member are fastened with bolts and nuts via the first engagement hole and the second engagement hole,
At least one of the first engagement hole or the second engagement hole has a diameter larger than the bolt diameter, and a gap is provided between the first bumper member and the second engagement hole. The bumper structure for a vehicle according to claim 1, wherein the surface position deviation with respect to the bumper member can be adjusted.   The first plate member and the second plate member are provided in the vicinity of both right and left ends formed by bending to the back side of the first bumper member and the second bumper member. Item 3. A bumper structure for a vehicle according to Item 1 or 2. In the mounting method of a vehicle bumper structure in which a plurality of bumper members are mounted in parallel in the vertical direction,
A plurality of bumper members extending in the vehicle width direction and arranged in parallel in the vertical direction so that the plurality of plate members provided on the upper and lower ends of the bumper members face each other;
A mounting method for a bumper structure of a vehicle, wherein the plurality of plate members facing each other after aligning the respective surfaces of the plurality of bumper members are joined together.

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