JP2018114938A - Bumper reinforcement - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bumper reinforcement which can inhibit deterioration of cooling performance of a radiator.SOLUTION: A bumper reinforcement 100 is provided between a radiator grille 24 provided on a vehicle front surface 12A and to which outer air S is introduced and a radiator 30 located at the vehicle rear side of the radiator grille 24. A ventilation part 110, in which the outer air S introduced from the radiator grille 24 flows from the front side to the rear side in a vehicle fore and aft direction, is provided in the bumper reinforcement 100.SELECTED DRAWING: Figure 1

Description

  The present invention relates to bumper reinforcement.

  Conventionally, in a vehicle such as an automobile, a bumper reinforcement is disposed at the front end portion of the vehicle in order to receive a load of a collision object (see, for example, Patent Document 1).

  This bumper reinforcement is often arranged on the front side of the vehicle with respect to the radiator. For this reason, a part of the outside air introduced into the heat exchanger from the front side of the vehicle is blocked by the bumper reinforcement, and the cooling performance of the radiator may be reduced.

JP2013-177062A

  The present invention has been made in consideration of the above facts, and an object thereof is to provide a bumper reinforcement capable of suppressing a decrease in the cooling performance of a radiator.

  According to a first aspect of the present invention, a radiator grille provided in front of the vehicle and introduced with outside air and a radiator provided on the vehicle rear side of the radiator grill are provided with a vehicle width direction as a longitudinal direction, and the radiator The bumper reinforcement includes a ventilation portion in which at least a part of the outside air introduced from the grill vents from the front side in the vehicle front-rear direction toward the rear side.

  In the first aspect of the present invention, at least a part of the outside air introduced from the radiator grill is provided with a ventilation portion that ventilates from the front side in the vehicle longitudinal direction toward the rear side. Therefore, even if bumper reinforcement is provided between the radiator grille and the radiator, at least a part of the outside air introduced from the radiator grill passes through the ventilation portion and hits the radiator. Therefore, compared with the case where a ventilation part is not provided, the fall of the cooling efficiency of a radiator by providing a bumper reinforcement between a radiator grille and a radiator is suppressed.

  A second aspect of the present invention is the bumper reinforcement according to the first aspect, wherein the ventilation portion has a plurality of wing-shaped cross members arranged in the vehicle vertical direction in a cross-sectional shape along the vehicle longitudinal direction.

  In the invention according to claim 2, the ventilation portion of the bumper reinforcement is generated on the rear side of the ventilation portion because a plurality of wing-shaped cross members are arranged in the vehicle vertical direction in the cross-sectional shape along the vehicle longitudinal direction. Turbulence is suppressed. Therefore, since the outside air flows smoothly through the ventilation section, a decrease in the cooling efficiency of the radiator due to the provision of bumper reinforcement between the radiator grille and the radiator is further suppressed.

  According to a third aspect of the present invention, the ventilating portion has a honeycomb structure in which a plurality of regular hexagonal cylindrical portions defined by partition walls are arranged in a front view as viewed from the front side in the vehicle front-rear direction. Is a bumper reinforcement.

  In the invention according to claim 3, the ventilation portion of the bumper reinforcement has a honeycomb structure in which a plurality of regular hexagonal cylindrical portions partitioned by the partition walls are arranged in a front view as viewed from the front side in the vehicle front-rear direction. And the fall of the rigidity by providing a ventilation part can be suppressed.

  According to the bumper reinforcement of the invention described in claim 1, it is possible to suppress a decrease in the cooling efficiency of the radiator.

  According to the bumper reinforcement of the invention described in claim 2, it is possible to further suppress a decrease in the cooling efficiency of the radiator.

  According to the bumper reinforcement of the invention described in claim 3, it is possible to suppress a decrease in rigidity due to the provision of the ventilation portion while suppressing a decrease in the cooling efficiency of the radiator.

It is sectional drawing along the vehicle front-back direction of the vehicle front part in which the bumper reinforcement of 1st embodiment was provided. It is sectional drawing along the vehicle front-back direction of the vehicle front part in which the bumper reinforcement of 2nd embodiment was provided. It is the front view seen from the front-back direction front side of the bumper reinforcement of 2nd embodiment. It is sectional drawing along the vehicle front-back direction of the vehicle front part in which the bumper reinforcement of the comparative example to which this invention is not applied was provided.

<First embodiment>
The bumper reinforcement according to the first embodiment of the present invention will be described with reference to FIG. In the figure, the arrow FR indicates the front side in the vehicle front-rear direction, and the arrow UP indicates the upper side in the vehicle vertical direction.

[Construction]
The structure of the bumper reinforcement 100 of the first embodiment and the vehicle front portion 12 of the vehicle 10 provided with the bumper reinforcement 100 will be described.

  As shown in FIG. 1, a front bumper 20 is provided along the vehicle width direction at the lower portion of the vehicle front portion 12 of the vehicle 10. The front bumper 20 includes a bumper cover 22 and a bumper reinforcement 100.

  The bumper cover 22 constitutes a vehicle front surface 12 </ b> A below the vehicle front portion 12. A radiator grille 24 is formed in the vehicle width direction intermediate portion of the bumper cover 22. The radiator grille 24 is provided with a plurality of fins 26 arranged with the vehicle width direction as a longitudinal direction and spaced in the vertical direction of the vehicle. Therefore, the outside air S is introduced from the radiator grille 24.

  The bumper reinforcement 100 is disposed along the vehicle width direction on the vehicle rear side of the radiator grille 24 of the bumper cover 22. On the rear side of the bumper reinforcement 100 vehicle, a radiator 30 is disposed.

  In the present embodiment, a lower grill 28 is formed below the radiator grill 24 of the bumper cover 22. Further, a lower reinforcement 40 is provided on the vehicle rear side of the lower grill 28 on the vehicle vertical direction lower side of the bumper reinforcement 100. An under cover 42 is provided below the lower grille 28 of the lower reinforcement 40 and the bumper cover 22.

  The bumper reinforcement 100 provided between the radiator grill 24 provided on the vehicle front surface 12 </ b> A and introduced with the outside air S and the radiator 30 on the rear side of the radiator grill 24 is introduced from the radiator grill 24. A ventilating portion 110 is provided for allowing the outside air S to ventilate from the front side in the vehicle longitudinal direction toward the rear side.

  In the ventilation section 110 provided in the bumper reinforcement 100, a plurality of cross members 112 having a longitudinal direction in the vehicle width direction are arranged at intervals in the vertical direction of the vehicle. Therefore, the outside air S is ventilated between the cross members 112.

  The cross-sectional shape of each cross member 112 along the vehicle front-rear direction has a pointed shape that is narrower in the vertical direction as the leading edge becomes rounder and the rear edge goes, that is, an airfoil.

  In the present embodiment, the ventilation portion 110 is provided over substantially the entire region of the bumper reinforcement 100 in the vehicle width direction. However, the ventilation part 110 may be provided only in a part of the bumper reinforcement 100 in the vehicle width direction, for example, in an intermediate part in the vehicle longitudinal direction. In short, it is only necessary that the ventilation section 110 is provided so that at least a part of the outside air S introduced from the radiator grille 24 is ventilated from the front side in the vehicle front-rear direction toward the rear side and hits the radiator 30.

[Action and effect]
The operation and effect of this embodiment will be described.

  The bumper reinforcement 100 is formed with a ventilation portion 110 through which the outside air S introduced from the radiator grille 24 is ventilated from the front side in the vehicle longitudinal direction toward the rear side. Therefore, even if the bumper reinforcement 100 is provided between the radiator grille 24 and the radiator 30, since the outside air S introduced from the radiator grille 24 passes through the ventilation unit 110 and hits the radiator 30, the ventilation unit 110 is provided. Compared with the case where it is not performed (for example, the bumper reinforcement 800 of the comparative example of FIG. 4 described later), the air volume hitting the radiator 30 increases. Therefore, a decrease in the cooling efficiency of the radiator 30 due to the provision of the bumper reinforcement 100 between the radiator grille 24 and the radiator 30 is suppressed.

  Further, in the ventilation section 110 of the bumper reinforcement 100, a plurality of wing-shaped cross members 112 having a cross-sectional shape along the vehicle longitudinal direction are arranged in the vehicle vertical direction. Therefore, since the outside air S flows smoothly along the upper and lower surfaces of the airfoil cross member 112, the turbulent flow R (see FIG. 4) hardly occurs on the rear side of the ventilation portion 110 (the generation of the turbulent flow R is suppressed). ) Therefore, for example, compared to the case where the cross-sectional shape of the cross member is rectangular, the ventilation resistance is reduced and the air volume is increased, so that the reduction in the cooling efficiency of the radiator 30 is further suppressed.

  Here, a case of a bumper reinforcement 800 of a comparative example having a closed cross section over the entire vehicle width direction in which the ventilation portion 110 (see FIG. 1) shown in FIG. 4 is not formed will be described.

  Since the outside air S introduced from the radiator grille 24 is blocked by the bumper reinforcement 800, it flows in a detour, and more turbulence R is generated on the rear side.

  On the other hand, in the bumper reinforcement 100 of the present embodiment shown in FIG. 1, as described above, the outside air S is ventilated through the ventilation portion 110, and turbulence R (see FIG. 4) hardly occurs on the rear side.

  As described above, the bumper reinforcement 100 of the present embodiment uses the outside air S more effectively than the comparative example of the bumper reinforcement 800 because the radiator 30 has a lot of outside air S. Therefore, the bumper reinforcement 100 of this embodiment can improve the cooling efficiency of the radiator 30 compared with the bumper reinforcement 800 of the comparative example.

<Second embodiment>
The bumper reinforcement according to the second embodiment of the present invention will be described with reference to FIGS. In the figure, the arrow FR indicates the front side in the vehicle front-rear direction, the arrow UP indicates the vehicle vertical direction upper side, and the arrow OUT indicates the vehicle width direction outer side. Moreover, the same code | symbol is attached | subjected to the member same as 1st embodiment, and the overlapping description is abbreviate | omitted or simplified.

[Construction]
The structure of the bumper reinforcement 200 of the second embodiment and the vehicle front portion 13 of the vehicle 11 provided with the bumper reinforcement 200 will be described.

  As shown in FIG. 2, a front bumper 20 is provided along the vehicle width direction at the lower portion of the vehicle front portion 13 of the vehicle 11. The front bumper 20 includes a bumper cover 22 and a bumper reinforcement 200. The bumper cover 22 constitutes a vehicle front surface 13 </ b> A below the vehicle front portion 13.

  The bumper reinforcement 200 is disposed along the vehicle width direction on the vehicle rear side of the radiator grille 24 of the bumper cover 22. On the rear side of the bumper reinforcement 200 vehicle, a radiator 30 is disposed.

  The bumper reinforcement 200 provided between the radiator grille 24 provided on the vehicle front surface 13A and introduced with the outside air S and the radiator 30 on the vehicle rear side of the radiator grille 24 is introduced from the radiator grille 24. A ventilating part 210 is provided through which the outside air S is ventilated from the front side in the vehicle longitudinal direction toward the rear side.

  As shown in FIG. 3, the ventilation portion 210 provided in the bumper reinforcement 200 has a honeycomb structure in which a plurality of regular hexagonal cylindrical portions 214 partitioned by partition walls 212 are arranged. Therefore, as shown in FIG. 2, the outside air S is ventilated inside each cylindrical portion 214 (see also FIG. 3).

  In the present embodiment, the ventilation portion 210 is provided over substantially the entire region of the bumper reinforcement 200 in the vehicle width direction. However, the ventilation part 210 may be provided only in a part of the bumper reinforcement 200 in the vehicle width direction, for example, in an intermediate part in the vehicle longitudinal direction. The point is that at least a part of the outside air S introduced from the radiator grille 24 is ventilated from the front side in the vehicle front-rear direction to the rear side, and the ventilation part 210 is provided so as to hit the radiator 30.

[Action and effect]
The operation and effect of this embodiment will be described.

  The bumper reinforcement 200 is formed with a ventilation portion 210 through which the outside air S introduced from the radiator grille 24 is ventilated from the front side in the vehicle longitudinal direction toward the rear side. Therefore, even if the bumper reinforcement 200 is provided between the radiator grille 24 and the radiator 30, the outside air S introduced from the radiator grille 24 passes through the ventilation part 210 and hits the radiator 30, so that the ventilation part 210 is provided. Compared with the case where it is not performed (for example, the bumper reinforcement 800 of the comparative example of FIG. 4 described above), the air volume hitting the radiator 30 increases. Therefore, a decrease in the cooling efficiency of the radiator 30 due to the provision of the bumper reinforcement 200 between the radiator grille 24 and the radiator 30 is suppressed.

  Further, the ventilation portion 210 provided in the bumper reinforcement 200 has a honeycomb structure in which a plurality of regular hexagonal cylindrical portions 214 partitioned by the partition walls 212 are arranged. Therefore, for example, compared to a configuration in which rectangular cylindrical portions are arranged, it is possible to suppress a decrease in rigidity due to the provision of the ventilation portion 210. That is, a decrease in impact energy absorption performance at the time of a frontal collision of the vehicle due to the provision of the ventilation portion 210 is suppressed.

  Therefore, by providing the ventilation part 210, the fall of the impact energy absorption performance by providing the ventilation part 210 is suppressed, suppressing the fall of the cooling efficiency of the radiator 30.

<Others>
The present invention is not limited to the above embodiment.

  For example, the ventilation portion has a regular hexagonal shape defined by a structure in which a plurality of wing-shaped cross members 112 are arranged in the vehicle vertical direction and the partition wall 212 of the second embodiment. It is not limited to the honeycomb structure in which a plurality of cylindrical portions 214 are arranged. The ventilation section may have a structure in which at least a part of the outside air S introduced from the radiator grille 24 is ventilated from the front side in the vehicle longitudinal direction toward the rear side.

  In addition, the present invention can be implemented in various modes without departing from the gist of the present invention.

DESCRIPTION OF SYMBOLS 10 Vehicle 11 Vehicle 12 Vehicle front part 12A Vehicle front surface 13 Vehicle front part 13A Vehicle front surface 24 Radiator grill 30 Radiator 100 Bumper reinforcement 110 Ventilation part 112 Cross member 200 Bumper reinforcement 210 Ventilation part 212 Bulkhead 214 Cylinder part
S open air

Claims (3)

  A radiator grille provided at the front of the vehicle and introduced with outside air, and a radiator provided on the vehicle rear side of the radiator grille with the vehicle width direction as a longitudinal direction, and the outside air introduced from the radiator grille A bumper reinforcement having a ventilation portion at least partially ventilating from the front side in the vehicle longitudinal direction toward the rear side.   2. The bumper reinforcement according to claim 1, wherein the ventilation portion has a plurality of wing-shaped cross members arranged in the vehicle vertical direction in a cross-sectional shape along the vehicle longitudinal direction.   2. The bumper reinforcement according to claim 1, wherein the ventilation portion has a honeycomb structure in which a plurality of regular hexagonal cylindrical portions partitioned by partition walls are arranged in a front view as viewed from the front side in the vehicle front-rear direction.