CN114423648A

CN114423648A - Bumper

Info

Publication number: CN114423648A
Application number: CN202080065943.6A
Authority: CN
Inventors: 增岛雄三
Original assignee: Isuzu Motors Ltd
Current assignee: Isuzu Motors Ltd
Priority date: 2019-09-20
Filing date: 2020-09-18
Publication date: 2022-04-29
Anticipated expiration: 2040-09-18
Also published as: JP2021046152A; WO2021054434A1; JP7156223B2; CN114423648B

Abstract

The bumper (S) has an outer side (1) having: an outer panel (11) provided on the outside of the vehicle; an upper panel (12) that extends from the upper end of the outer panel (11) toward the inside of the vehicle and that has a first hole (121); and a lower panel section (13) that extends from the lower end of the outer panel section (11) toward the inside of the vehicle and that has a second hole (131) that has a width that is smaller than the width of the first hole (121) in the front-rear direction of the vehicle.

Description

Bumper

Technical Field

The present disclosure relates to a bumper of a vehicle.

Background

Conventionally, a vehicle is provided with a bumper for mitigating an impact at the time of a collision (see, for example, patent document 1).

Documents of the prior art

Patent document

Patent document 1: japanese unexamined patent publication No. Hei 11-192905

Disclosure of Invention

Technical problem to be solved by the invention

In the case where the vehicle collides with a pedestrian, the following problems occur: the impact from the bumper intensively hits some parts of the pedestrian, and thus the impact on the pedestrian becomes large.

Accordingly, the present disclosure has been made in view of these aspects, and an object thereof is to provide a bumper that reduces the influence on a pedestrian colliding with a vehicle.

Means for solving the problems

In a first aspect of the present disclosure, there is provided a bumper beam characterized by having an outer side portion having: an outer panel portion provided on an outer side of the vehicle; an upper panel portion extending from an upper end of the outer panel portion toward an inside of the vehicle and having a first hole; and a lower panel portion extending inward from a lower end of the outer panel portion and having a second hole having a width smaller than a width of the first hole in a front-rear direction of the vehicle.

Further, the upper plate portion may have a smaller resistance to the external force applied in the front-rear direction than the lower plate portion. Further, a longitudinal direction of the first hole may be the same as a vehicle width direction of the vehicle, and a longitudinal direction of the second hole may be the same as the vehicle width direction.

The upper plate portion may have a plurality of the first holes, and the lower plate portion may have a plurality of the second holes, the number of the second holes being equal to the number of the first holes. Further, the center positions of the plurality of first holes in the vehicle width direction of the vehicle may coincide with the center positions of the corresponding plurality of second holes.

Effects of the invention

According to the present disclosure, in the bumper, an effect is obtained that the influence on the pedestrian colliding with the vehicle can be reduced.

Drawings

Fig. 1 shows a state in which a bumper according to the present embodiment is installed in a vehicle.

Fig. 2 shows a state in which members constituting the bumper of the present embodiment are separated.

Fig. 3 shows a state in which members constituting a conventional bumper are separated.

Fig. 4 is an enlarged view of the vicinity of the fragile region of the inner side portion.

Fig. 5 shows the structure of the reinforcing member.

Detailed Description

[ peripheral Structure of Bumper S ]

Fig. 1 is a diagram showing a state in which a bumper S of the present embodiment is installed in a vehicle.

The Vehicle is, for example, an SUV (sports Utility Vehicle). The bumper S is a member for protecting the vehicle body, the occupant, and the external object by relaxing the impact when the vehicle collides with the external object. The bumper S is provided in front of the vehicle.

The front surface of the bumper S has a curved region in a state that a lower end of the front surface of the bumper S is located more rearward than an upper end of the front surface of the bumper S in order to form an approach angle (apuroach angle) of a predetermined angle. The approach angle is an angle between the lowest portion of the vehicle body front end of the vehicle and a tangent line to the outer periphery of the front wheel of the vehicle, and the ground.

The example shown in fig. 1 shows the bumper S disposed in front of the vehicle, but the bumper S may be disposed in the rear of the vehicle. In a case where the bumper S is provided at the rear of the vehicle, a predetermined angle of departure angle (departure angle) is formed. The departure angle is an angle between a line connecting a lowermost portion of a portion of the vehicle projecting rearward from the center of the rear wheel of the vehicle and the rear-side ground of the rear wheel of the vehicle, and the ground.

[ Structure of Bumper S ]

Fig. 2 is a diagram showing a state in which members constituting the bumper S of the present embodiment are separated.

The bumper S has an outer portion 1, an inner portion 2, and a reinforcing member 3. The outer side portion 1 is a member extending in the vehicle width direction of the vehicle. Specifically, the outer side portion 1 is a member provided on the foremost side of a bumper S provided in front of the vehicle. The outer portion 1 is more easily deformed than the inner portion 2 and the reinforcing member 3. The details of the outer portion 1 will be described later.

The inner portion 2 is a member that extends in the vehicle width direction of the vehicle on the vehicle inner side of the outer portion 1. The inner side of the vehicle is the side closer to the center of the vehicle. Specifically, the inner side portion 2 is a member that extends in the vehicle width direction of the vehicle further to the rear in the vehicle front-rear direction than the outer side portion 1.

The inner part 2 has a zone of weakness 21. The fragile region 21 is a region that is more easily deformed than other regions in the inner portion 2, and is, for example, a region formed thinner than other regions or a region formed with an opening. The details of the inner portion 2 will be described later.

The reinforcement member 3 is disposed between the outer side portion 1 and the inner side portion 2. Specifically, the reinforcement member 3 is provided between the outer side portion 1 and the inner side portion 2 in the front-rear direction of the vehicle. The reinforcing member 3 has a projection 31. The protruding portion 31 is a portion that extends to the inner portion 2 on the outer side in the vehicle width direction of the vehicle than the fragile region 21.

By providing the inner portion 2 and the reinforcing member 3, when a pedestrian collides with the vicinity of the end portions on both sides in the longitudinal direction of the bumper S, the protrusion 31 presses the region on the vehicle width direction outer side of the fragile region 21 of the inner portion 2 rearward, and thus the fragile region 21 deforms. The bumper S is deformed by the weakened region 21, and the vicinity of the end portions on both sides in the longitudinal direction of the bumper S is easily bent backward. Therefore, while the vehicle is moving forward at the time when the pedestrian collides with the bumper S, the bumper S moves diagonally forward in contact with the pedestrian. As a result, the pedestrian easily falls to the outside of the vehicle while rotating to the outside in the vehicle width direction of the vehicle.

Further, when the outer side portion 1 is pressed inward of the vehicle, the tip of the protruding portion 31 contacts a region further outward in the vehicle width direction than the fragile region 21 in the surface of the inner side portion 2 on the outer side portion 1 side. Specifically, when the outer side portion 1 is pressed rearward in the front-rear direction of the vehicle, the end portion of the protruding portion 31 on the inner side portion 2 side comes into contact with a region further outward in the vehicle width direction of the vehicle than the fragile region 21 in the front surface of the inner side portion 2.

Therefore, when the bumper S collides with a pedestrian, the front end of the protruding portion 31 contacts a region further to the outside in the vehicle width direction of the vehicle than the fragile region 21 in the surface on the outside portion 1 side of the inside portion 2. The front end of the protruding portion 31 presses the region of the inner portion 2 on the vehicle outer side of the fragile region 21 rearward, and therefore the fragile region 21 can be deformed. As a result, the region outside the bumper S is deformed so as to bend rearward.

The bumper S includes a first reinforcing member 3a and a second reinforcing member 3b as the reinforcing member 3. The first reinforcing member 3a is a reinforcing member provided between one end of the outer side portion 1 in the vehicle width direction of the vehicle and one end of the inner side portion 2 on the same side as the one end in the vehicle width direction of the vehicle. Specifically, the first reinforcement member 3a is a reinforcement member provided between the left end of the outer side portion 1 in the vehicle width direction of the vehicle and the left end of the inner side portion 2 in the vehicle width direction of the vehicle.

The second reinforcement member 3b is a reinforcement member provided between the other end of the outer side portion 1 in the vehicle width direction of the vehicle and the other end of the inner side portion 2 on the same side as the other end in the vehicle width direction of the vehicle. Specifically, the second reinforcing member 3b is a reinforcing member provided between the right end of the outer side portion 1 in the vehicle width direction of the vehicle and the right end of the inner side portion 2 in the vehicle width direction of the vehicle.

The inner portion 2 has a first fragile region 21a and a second fragile region 21b as the fragile region 21. The first weak region 21a is a weak region located further to the vehicle inner side than the first reinforcing member 3 a. Specifically, the first weak region 21a is a weak region located further to the rear of the vehicle than the first reinforcing member 3 a. The second weak region 21b is a weak region located further to the vehicle inner side than the second reinforcing member 3 b. Specifically, the second weak region 21b is a weak region located further to the rear of the vehicle than the second reinforcing member 3 b.

In this way, by providing the reinforcing member 3 and the fragile region 21 on both sides of the vehicle, the bumper S can be deformed so that the outer side portion 1 is recessed inward when a pedestrian collides with the vicinity of the center in the longitudinal direction of the outer side portion 1, thereby reducing the impact on the pedestrian.

[ Structure of outer part 1 ]

The outer portion 1 includes an outer plate portion 11, an upper plate portion 12, and a lower plate portion 13. The outer panel 11 is a portion provided on the outer side of the vehicle. The upper panel 12 extends from the upper end of the outer panel 11 toward the inside of the vehicle. In the present embodiment, the upper panel portion 12 is a portion extending rearward of the vehicle from the upper end of the outer panel portion 11. The upper panel portion 12 has a first hole 121.

The lower panel portion 13 extends from the lower end of the outer panel portion 11 toward the inside of the vehicle. In the present embodiment, the lower panel portion 13 is a portion extending rearward of the vehicle from the lower end of the outer panel portion 11. The lower panel portion 13 has a second hole 131. The width of the second hole 131 is smaller than the width of the first hole 121 in the front-rear direction of the vehicle.

The outer portion 1 is bent to protrude forward in a state where the front end of the lower panel portion 13 is located rearward of the front end of the upper panel portion 12.

Fig. 3 is a diagram showing a state in which members constituting a conventional bumper are separated.

In the conventional bumper, the front surface of the outer portion 9 is curved in a state of protruding forward so that the front end of the lower panel portion 93 is positioned further rearward than the front end of the upper panel portion 92 by forming the approach angle in the same manner as the bumper S of the present embodiment. In the conventional bumper, the outer portion 9 in which the hole having the shape of the bumper S is not formed in each of the upper surface plate portion 92 and the lower surface plate portion 93 is provided, and when a pedestrian collides with the conventional bumper from the front, the pedestrian collides with the front end of the upper surface plate portion 92 in a concentrated manner by the impact from the bumper at the portion of the pedestrian that contacts the front end. As a result, the conventional bumper has a large impact on the pedestrian.

On the other hand, since the bumper S has the outer portion 1 in which the first hole 121 and the second hole 131 having the shapes described above are formed, when a pedestrian collides with the outer portion 1 of the bumper S from the front, the front end of the upper panel 12 is more likely to move rearward than the front end of the lower panel 13 by the outer portion 1 being pushed rearward by the pedestrian.

Therefore, when a pedestrian collides with the bumper S, the bumper S deforms so that the front end of the upper panel portion 12 moves rearward before the front end of the lower panel portion 13, and therefore the front surface of the outer side portion 1 moves rearward in a state close to parallel to the height direction of the vehicle, and is easily crushed. As a result, in the bumper S, a pedestrian comes into contact with a wider area of the front surface of the bumper S than in the conventional bumper, and therefore, an impact from the bumper S easily collides with a wider portion of the pedestrian. Therefore, in the bumper S, the influence on the pedestrian colliding with the vehicle can be reduced.

In the outer side portion 1, the upper panel portion 12 has a smaller resistance to an external force applied in the front-rear direction of the vehicle than the lower panel portion 13 has to an external force applied in the front-rear direction of the vehicle of the same magnitude. Therefore, since the bumper S has the outer side portion 1 having the upper panel portion 12 and the lower panel portion 13, when a pedestrian collides with the bumper S of the vehicle, the front end of the upper panel portion 12 is more likely to move rearward than the front end of the lower panel portion 13. As a result, as described above, the bumper S can reduce the influence on the pedestrian who collides with the bumper S, as compared with the conventional bumper.

As shown in fig. 2, the longitudinal direction of the first hole 121 is the same as the vehicle width direction of the vehicle. Like the first hole 121, the longitudinal direction of the second hole 131 is the same as the vehicle width direction of the vehicle. The bumper S is easily crushed rearward in the vehicle width direction uniformly by forming the first hole 121 and the second hole 131 having such shapes in the outer side portion 1. Therefore, the bumper S can reduce the influence on the pedestrian who collides with the bumper S, as compared with the conventional bumper.

As shown in fig. 2, the upper panel portion 12 has a plurality of first holes 121. The lower panel portion 13 has a plurality of second holes 131 in the same number as the first holes 121. Two first holes 121 are formed in the upper panel portion 12 in the vehicle width direction of the vehicle, but the number of first holes 121 is not limited thereto. The number of the first holes 121 is arbitrary. Two second holes 131 are formed in the lower panel portion 13 in the vehicle width direction of the vehicle, but the number of the second holes 131 is not limited thereto. The number of the second holes 131 is arbitrary.

The center positions of the plurality of first holes 121 in the vehicle width direction of the vehicle coincide with the center positions of the corresponding plurality of second holes 131. In the bumper S, the first hole 121 and the second hole 131 are formed in the outer portion 1 in this manner, so that the front end of the upper panel portion 12 and the front end of the lower panel portion 13 can easily move rearward uniformly.

[ Structure of the inner part 2 ]

Fig. 4 is an enlarged view of the vicinity of the fragile region 21 in the inner side portion 2. Fig. 5 is a diagram showing the structure of the reinforcing member 3.

The inner part 2 has, for example, an area with a cross section in the shape of a letter コ. The inner portion 2 includes an outer plate 22, an upper plate 23, a lower plate 24, a first recess 25, and a second recess 26. The outer plate 22 is provided on the outer side 1. The upper panel portion 23 is a portion extending from the upper end of the outer panel portion 22 toward the inside of the vehicle. Specifically, the upper panel portion 23 is a portion extending rearward in the front-rear direction of the vehicle from the upper end of the outer panel portion 22.

The lower panel portion 24 extends from the lower end of the outer panel portion 22 toward the inside of the vehicle. Specifically, the lower panel portion 24 is a portion extending rearward in the front-rear direction of the vehicle from the lower end of the outer panel portion 22.

The first recess 25 is a recess formed at an end of the upper panel portion 23 opposite to the side connected to the outer panel portion 22. Specifically, the first recess 25 is a recess formed at the rear end of the upper plate portion 23.

The second recess 26 is a recess formed at an end of the lower plate portion 24 opposite to the side connected to the outer plate portion 22. Specifically, the second recess 26 is a recess formed at the rear end of the lower plate portion 24.

The fragile region 21 is a region having a first recess 25 and a second recess 26. By providing the bumper S with the inner portion 2, the fragile region 21 can be easily provided without increasing the number of components.

[ modified examples ]

In the above embodiment, the example in which the bumper S is provided at the front in the front-rear direction of the vehicle has been described, but the present invention is not limited thereto. The bumper S may be disposed rearward of the vehicle.

[ Effect of the bumper S of the present embodiment ]

The bumper S of the present embodiment has an outer side portion 1, and the outer side portion 1 includes: an outer panel 11 provided on the outside of the vehicle; an upper panel portion 12 extending from an upper end of the outer panel portion 11 toward the inside of the vehicle and having a first hole 121; and a lower panel portion 13 extending from the lower end of the outer panel portion 11 toward the inside of the vehicle and having a second hole 131 whose width in the front-rear direction of the vehicle is smaller than the width of the first hole 121.

Since the bumper S of the present embodiment has the outer portion 1 in which the first hole 121 and the second hole 131 having such shapes are formed, when a pedestrian collides with the outer portion 1 of the bumper S from the front, the pedestrian pushes the outer portion 1 rearward, and the front end of the upper panel portion 12 is more likely to move rearward than the front end of the lower panel portion 13.

Therefore, when a pedestrian collides with bumper S, bumper S deforms so that the front end of upper panel portion 12 moves rearward before the front end of lower panel portion 13, and the front surface of outer portion 1 is therefore likely to collapse so as to move rearward in a state close to parallel to the height direction of the vehicle. As a result, in the bumper S, a pedestrian comes into contact with a wider area of the front surface of the bumper S than in the conventional bumper, and therefore, an impact from the bumper S hits a wider portion of the pedestrian. Therefore, in the bumper S, the influence on the pedestrian colliding with the vehicle can be reduced.

The present disclosure has been described above with reference to the embodiments, but the technical scope of the present disclosure is not limited to the scope described in the above embodiments, and various modifications and changes can be made within the scope of the gist thereof. For example, all or a part of the apparatus may be configured by functionally or physically separating and integrating the apparatus in arbitrary units. In addition, a new embodiment which is created by arbitrary combination of the plurality of embodiments is also included in the embodiments of the present disclosure. The effects of the new embodiment produced by the combination have the effects of the original embodiment at the same time.

The present application is based on the japanese patent application filed on 20/9/2019 (Japanese application 2019-171105), the contents of which are incorporated herein by reference.

[ Industrial Applicability ]

The bumper of the present disclosure is useful in reducing the impact on a pedestrian colliding with a vehicle.

[ description of reference numerals ]

S … bumper

1 … outer side part

11 … outer side plate

12 … upper panel part

121 … first hole

13 … lower panel part

131 … second hole

2 … inner side

21 … area of weakness

21a … first zone of weakness

21b … second zone of weakness

22 … outer side plate

23 … upper panel part

24 … lower panel part

25 … first recess

26 … second recess

3 … reinforcing member

3a … first reinforcing member

3b … second reinforcing member

31 … projection

9 … outer side part

91 … outer side plate

92 … upper panel part

93 … and a lower panel portion.

Claims

1. A bumper is characterized in that the bumper is provided with a bumper body,

having an outer side portion having: an outer panel portion provided on an outer side of the vehicle; an upper panel portion extending from an upper end of the outer panel portion toward an inside of the vehicle and having a first hole; and a lower panel portion extending inward from a lower end of the outer panel portion and having a second hole having a width smaller than a width of the first hole in a front-rear direction of the vehicle.

2. The bumper of claim 1,

the upper panel portion has a smaller resistance to an external force applied in the front-rear direction than the lower panel portion.

3. The bumper of claim 1 or 2,

the longitudinal direction of the first hole is the same as the vehicle width direction of the vehicle,

the second hole has a longitudinal direction identical to the vehicle width direction.

4. The bumper of any one of claims 1-3,

the upper panel portion has a plurality of the first holes,

the lower panel portion has a plurality of the second holes in the same number as the first holes.

5. The bumper of claim 4,

the center positions of the plurality of first holes in the vehicle width direction of the vehicle coincide with the center positions of the plurality of second holes.