JP3268424B2 - Mounting structure of vehicle front underrun protector - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a front underrun of a vehicle for preventing a vehicle such as a passenger car from getting under a vehicle such as a truck when the vehicle such as a truck collides with the vehicle such as a passenger vehicle. The present invention relates to a protector, and more particularly, to a mounting structure of a front underrun protector.

[0002]

2. Description of the Related Art Conventionally, a truck bumper is provided at a position higher than a passenger car such that a windshield of the passenger car hits the bumper, and when the truck collides with the passenger car, the passenger car goes under the truck. Was sometimes said For this reason, there has been proposed an apparatus in which a bracket is fixed in front of a vehicle body frame at a position below a bumper, and a front underrun protector is provided on a front surface of a support plate rotatably provided on the bracket (Japanese Utility Model Laid-Open No. 6-8).
No. 114).

Further, an arm projecting forward is integrally formed with a front spring bracket for supporting a front end of a spring of a spring type suspension on a vehicle body frame, and a front underrun protector is fixedly attached to the arm. Some are also known (Japanese Utility Model 7-4209)
Reference).

[0004]

The upper and lower mounting positions of the front underrun protector with respect to the body frame as described above are different for each vehicle type due to the difference in ground height of the vehicle. However, conventionally, it has been considered difficult to employ a structure for changing the upper and lower mounting positions of the front underrun protector with respect to the frame, particularly, a technique of changing the position while sharing parts.

As is apparent from the above-mentioned prior art of the front underrun protector, the front underrun protector is usually provided at the front portion of the vehicle so as to be exposed, and its appearance is poor. It was also said that the technology to do was difficult. The present invention has been made in view of the above, and in the case of a frontal collision of a passenger car or the like with a truck or the like, a structure for changing the upper and lower mounting positions of the front underrun protector with respect to the body frame to prevent the passenger car from sneaking in. It is another object of the present invention to improve the appearance of the front underrun protector while sharing parts.

[0006]

Means for Solving the Problems] Therefore, the invention according to claim 1, off which is arranged behind the front bumper of the vehicle
The front under bumper is fixed to the rear of the air dam, which is disposed so as to cover the front of the vehicle below the front bumper and whose upper end is slidably inserted between the front of the front bumper and the front of the body frame. and mounting, the air dam, at selected predetermined slid into position between the front bumper back and the body frame front portion of the upper end portion is fixed mounted by a fastener to the cross member connecting the right and left side rails of the vehicle frame At the same time, the front underrun protector is fixedly attached to a bracket fixedly attached to the left and right side rails by a fastener.
Mounting structure of front underrun protector
The cross member and the bracket are provided with air.
Multiple fixed mounting positions for dams and cross members
Make sure that fastener insertion holes are formed at multiple
I made it.

According to a second aspect of the present invention, a front bar of a vehicle is provided.
Front underrun protector located behind the damper
To cover the front of the vehicle below the front bumper.
With the upper end at the back of the front bumper and the body frame.
Air dam slidably inserted between the front and rear
The air dam is fixedly mounted on the back, and the air dam is
Selected between the rear of the vehicle bumper and the front of the body frame
At the slide insertion position, move the left and right side
Fixedly attached to the cross member connecting the
And the front underrun protector is
Fastened to brackets fixedly mounted on left and right side rails
Vehicle front under which is fixedly mounted
A mounting structure for a run protector, wherein the cross member and the bracket have fasteners in a length range corresponding to a plurality of fixed mounting positions of the air dam and the cross member selected.
Elongated holes to be inserted and slid were formed respectively.

[0008]

[0009]

Embodiments of the present invention will be described below in detail with reference to the drawings. 1 and 2, a front underrun protector 2 disposed behind a front bumper 1 of a vehicle is disposed so as to cover a front portion of the vehicle below the front bumper 1, and an upper end portion thereof is provided with a front bumper. 1 is fixedly mounted on the back surface of the air dam 4 which is slidably inserted between the back portion and the front portion of the body frame 3.

The air dam 4 has a cross member 3B for connecting the left and right side rails 3A of the body frame 3 at a selected predetermined slide insertion position between the back of the front bumper 1 at the upper end thereof and the front of the body frame 3. In addition to being fixedly attached, the front underrun protector 2 is fixedly attached to a bracket 5 fixedly attached to the left and right side rails 3A.

The structure of the front underrun protector 2 will be described below. The front underrun protector 2 is formed in a horizontally long hollow rectangular shape by sheet metal. A pair of mounting plates 6 are respectively fixed to two positions on both ends of the rear wall of the front underrun protector 2 which are separated from each other. Holes 7 are respectively formed.

The air dam 4 is formed in a plate shape extending in the left-right direction of the vehicle, and has a lower portion 4A having a substantially U-shaped cross section.
And a flat upper part 4B.
A receiving plate portion 4C that projects horizontally rearward is formed at the lower edge of A. The front underrun protector 2 is disposed on the rear side of the lower portion of the air dam 4 and is fixedly attached to the air dam 4 by a fastener such as a bolt or welding while being received by the receiving plate 4C. Integrated.

At two portions of the upper part 4B of the air dam 4 which are separated from each other on the left and right, bolt insertion holes 8 of fasteners each comprising a bolt and a nut are formed in a plurality of rows in the vertical direction. On the other hand, 2 which is separated to the left and right of the cross member 3B
The bolt insertion holes 9 out of the fasteners composed of bolts and nuts respectively correspond to the eight rows of the insertion holes of the air dam 4.
Are formed in a plurality of rows in the vertical direction, respectively.

A substantially L-shaped mounting member 10 is fixed to the upper end of each of the brackets 5 by welding or the like. They are fixedly attached to the side corners using welding or bolts, respectively. Such bracket 5
In each of the fasteners, bolt insertion holes 11 are formed in a plurality of rows in the vertical direction and formed in the horizontal direction so as to penetrate in the horizontal direction.

In such a configuration, in order to adjust the vertical mounting position of the front underrun protector 2 with respect to the vehicle body frame 3 in accordance with the height of the vehicle, the air dam 4 integrated with the front underrun protector 2 is slid up and down. The bolt insertion hole 9 and the bracket 5 provided in the cross member 3B are determined in accordance with this position.
And the bolts and nuts inserted into the bolt insertion holes 9 and 11, the bolt insertion holes 8 of the air dam 4, and the bolt insertion holes 7 of the mounting plate 6, and the air dam 4 is crossed. What is necessary is just to fasten the mounting plate 6 of the front underrun protector 2 to the bracket 5 to the member 3B.

The pair of mounting plates 6 of the front underrun protector 2 are fastened to the respective brackets 5 by bolts and nuts while being set on the respective brackets 5 so as to sandwich the respective brackets 5 from both sides. When the truck collides with a passenger car as a result of attaching the front underrun protector 2 to the front of the vehicle as described above,
The vicinity of the radiator grill of the passenger car hits the front underrun protector 2, thereby preventing the passenger car from getting under the truck.

According to the mounting structure of the front underrun protector 2 having such a configuration, when the vertical mounting position of the front underrun protector 2 with respect to the vehicle body frame 3 is changed, the mounting position of the air dam 4 with respect to the cross member 3B is changed. Since it is only necessary to change the mounting position of the front underrun protector 2 with respect to the bracket 5, the body frame 3 of the front underrun protector 2 can be changed.
Parts can be shared in changing the upper and lower mounting positions with respect to.

That is, even when the upper and lower mounting positions of the front underrun protector 2 are different for each vehicle, it is not necessary to change the front underrun protector 2, the front bumper 1, the air dam 4, and the like. Is 1
Since any type can be used, the number of parts can be reduced, which is advantageous in terms of cost. Further, the front underrun protector 2 is fixed to the rear side of the air dam 4 and is shielded from the outside by the air dam 4 so as not to be exposed at the front of the vehicle, so that the appearance is good.

Incidentally, in a structure in which the air dam 4 and the cross member 3B are fixedly attached with fasteners and the front underrun protector 2 and the bracket 5 are fixedly attached with bolts and nuts, the cross member 3B and the bracket 5 are fixed. An elongated hole through which a bolt is inserted and slid is formed in a length range corresponding to a plurality of selected fixed mounting positions of the air dam 4 and the cross member 3B, and the vertical position of the air dam 4 is slidably adjusted. In order to fix the air dam 4 at an arbitrary slide position, a structure in which the vertical position of the front underrun protector 2 can be freely selected may be adopted.

[0020]

As described above, according to the first aspect of the present invention, the fastening provided on the air dam and the cross member is provided.
Change the insertion hole position of the
Adjustment of the upper and lower mounting positions of the
You. For this reason, even if the upper and lower mounting positions of the front underrun protector are different for each vehicle, the front underrun protector and other parts around the front underrun protector do not need to be changed, and the parts can be shared. Thus, the number of parts can be reduced, which is advantageous in terms of cost . Further, the front underrun protector is fixed to the rear side of the air dam and is shielded from the outside by the air dam so as not to be exposed at the front of the vehicle, so that the appearance can be improved.

According to the second aspect of the present invention, the vertical position of the air dam is slidably adjusted so that the air dam is fixed at the adjusting position, so that the vertical mounting position of the front underrun protector can be freely adjusted. And can be easily performed. For this reason, the front underrun protector
If the upper and lower mounting positions are different for each vehicle,
Also, the front underrun protector and other parts around it
Parts can be shared without changing the parts.
Can be reduced, and the cost is also advantageous. Also, Freon
Secure the tounderrun protector to the back of the air dam.
And the vehicle is shielded from the outside by the air dam.
Because it was not exposed at both fronts,
Improvement can also be achieved.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of a mounting structure of a front underrun protector of a vehicle according to the present invention.

FIG. 2 is a sectional view taken along the line AA in FIG.

[Description of Signs] 1 Front bumper 2 Front underrun protector 3 Body frame 3A Side rail 3B Cross member 4 Air dam 5 Bracket 6 Mounting plate 7 Bolt insertion hole 8 Bolt insertion hole 9 Bolt insertion hole 11 Bolt insertion hole

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int. Cl. ⁷ , DB name) B60R 19/56 B62D 25/08

Claims (2)

(57) [Claims] 1. A vehicle disposed behind a front bumper of a vehicle.
The front underrun protector is fixed to the back of the air dam which is disposed so as to cover the front of the vehicle below the front bumper, and whose upper end is slidably inserted between the front of the front bumper and the front of the body frame. and mounting, the air dam, at selected predetermined slid into position between the front bumper back and the body frame front portion of the upper end portion is fixed mounted by a fastener to the cross member connecting the right and left side rails of the vehicle frame At the same time, the front underrun protector is fixed to a bracket fixedly attached to the left and right side rails by a fastener.
Front underrun lottery for vehicles with fixed mounting
The cross member and the bracket have an air dam and a closing member.
Multiple members corresponding to the multiple fixed mounting positions
A mounting structure for a vehicle front underrun protector, wherein fastener insertion holes are formed at several positions . 2. The vehicle is disposed behind a front bumper of the vehicle.
Connect the front underrun protector to the front bumper
It is arranged so as to cover the lower front part of the vehicle, and the upper end is
Slide between the back of the front bumper and the front of the body frame
Capable fixed attached to air dam back to be inserted position, the air dam, front bumper back and car its upper portion
At the selected slide insertion position between the front of the body frame
To connect the left and right side rails of the body frame.
The front underrun protector is fixedly attached to the member with fasteners , and the left and right
The bracket is fixedly attached to the
Front underrun lottery for vehicles with fixed mounting
The cross member and the bracket have a length corresponding to a plurality of fixed mounting positions of the air dam and the cross member.
A mounting structure for a vehicle front underrun protector, wherein elongated holes through which fasteners are inserted and slid are formed in the range.