CN114423648B

CN114423648B - Bumper

Info

Publication number: CN114423648B
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: 2023-07-21
Anticipated expiration: 2040-09-18
Also published as: JP2021046152A; CN114423648A; WO2021054434A1; JP7156223B2

Abstract

The bumper (S) has an outer portion (1) provided with: an outer panel (11) that is provided on the outside of the vehicle; an upper panel portion (12) extending from the 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) having a width 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 bumpers for vehicles.

Background

Conventionally, a bumper is provided in a vehicle to alleviate an impact at the time of collision (for example, refer to patent document 1).

Prior art literature

Patent literature

Patent document 1: japanese patent application laid-open No. 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 problem arises: the impact from the bumper intensively hits some portions of the pedestrian, and thus the impact to 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 an influence on a pedestrian colliding with a vehicle.

Technical means for solving the technical problems

In a first aspect of the present disclosure, there is provided a bumper including an outer side portion having: an outer panel portion provided outside the vehicle; an upper panel portion extending from an upper end of the outer panel portion toward an inside of the vehicle, the upper panel portion having a first hole; and a lower panel portion extending from a lower end of the outer panel portion toward the inner side 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 panel portion may have a smaller resistance to an external force applied in the front-rear direction than the lower panel portion. Further, the longitudinal direction of the first hole may be the same as the vehicle width direction of the vehicle, and the longitudinal direction of the second hole may be the same as the vehicle width direction.

The upper panel portion may have a plurality of the first holes, and the lower panel portion may have a plurality of the second holes, the number of which is the same as that of the first holes. Further, the center positions of the plurality of first holes in the vehicle width direction of the vehicle may be aligned with the center positions of the corresponding plurality of second holes.

Effects of the invention

According to the present disclosure, in the bumper, such 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 the bumper of the present embodiment is provided 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 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 according to the present embodiment is provided in a vehicle.

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

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

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

[ Structure of Bumper S ]

Fig. 2 is a view 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 portion 1 is a member extending in the vehicle width direction of the vehicle. Specifically, the outer portion 1 is a member provided on the forefront side of a bumper S provided in the 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 inner side of the vehicle than the outer portion 1. The inside of the vehicle is the side closer to the center of the vehicle. Specifically, the inner portion 2 is a member that extends in the vehicle width direction of the vehicle rearward in the vehicle longitudinal direction of the outer portion 1.

The inner portion 2 has a frangible region 21. The fragile region 21 is a region that is more easily deformed than other regions in the inner side 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 reinforcing member 3 is provided between the outer side portion 1 and the inner side portion 2. Specifically, the reinforcing 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 protruding portion 31. The protruding portion 31 is a portion extending toward the inner side 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 ends of the both sides of the bumper S in the longitudinal direction, the protruding portion 31 presses the region of the inner portion 2 that is further outside in the vehicle width direction than the fragile region 21, and therefore the fragile region 21 deforms. The bumper S is deformed by the fragile region 21, and the vicinity of the end portions of both sides in the longitudinal direction of the bumper S is easily bent rearward. Therefore, the bumper S moves obliquely forward in contact with the pedestrian while the vehicle is advancing forward at the time of collision of the pedestrian with the bumper S. As a result, the pedestrian easily falls down to the outside of the vehicle while rotating to the outside in the vehicle width direction of the vehicle.

Further, the outer portion 1 is pressed toward the inside of the vehicle, and the tip of the protruding portion 31 is thereby brought into contact with a region further toward the outside in the vehicle width direction than the fragile region 21 in the surface of the outer portion 1 side of the inner portion 2. Specifically, the outer portion 1 is pressed rearward in the vehicle longitudinal direction, and thereby the end portion of the protruding portion 31 on the inner portion 2 side contacts an area on the outer side in the vehicle width direction of the vehicle than the fragile area 21 on the front surface of the inner portion 2.

Therefore, in the case where the bumper S collides with a pedestrian, the tip end of the protruding portion 31 contacts an area on the outer side in the vehicle width direction of the vehicle than the fragile area 21 in the surface on the outer side 1 side of the inner side portion 2. The tip of the protruding portion 31 presses the region of the inner portion 2 on the vehicle outer side than the fragile region 21 rearward, so that the fragile region 21 can be deformed. As a result, the outer region of the bumper S is deformed to bend rearward.

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

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

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

In this way, since the bumper S has the reinforcing member 3 and the fragile region 21 on both sides of the vehicle, when a pedestrian collides with the vicinity of the center in the longitudinal direction of the outer portion 1, the bumper S deforms so that the outer portion 1 is recessed inward, and thus the impact on the pedestrian can be reduced.

[ Structure of outer side portion 1 ]

The outer portion 1 includes an outer plate portion 11, an upper panel portion 12, and a lower panel portion 13. The outer panel 11 is a portion provided outside the vehicle. The upper panel portion 12 extends from the upper end of the outer panel portion 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 is a portion extending 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 protrudes forward and is curved 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 view showing a state in which members constituting a conventional bumper are separated.

In the conventional bumper, as in the bumper S of the present embodiment, the front end of the lower panel portion 93 is bent in a state of protruding forward so that the front end of the upper panel portion 92 is located further rearward than the front end of the outer side portion 9 by forming the approach angle. In the conventional bumper, the outer side portion 9 is provided with the holes having such a shape that the upper panel portion 92 and the lower panel portion 93 do not have formed therein the bumper S, and if a pedestrian collides with the conventional bumper from the front, the impact from the bumper collides intensively at a portion of the pedestrian that contacts the front end of the upper panel portion 92. As a result, in the conventional bumper, the impact to the pedestrian increases.

In contrast, 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 outer portion 1 is pushed rearward by the pedestrian, and the front end of the upper panel 12 moves rearward more easily than the front end of the lower panel 13.

Therefore, when a pedestrian collides with the bumper S, the front end of the upper panel portion 12 deforms so as to move rearward before the front end of the lower panel portion 13, and the front surface of the side portion 1 moves rearward in a state of being nearly parallel to the height direction of the vehicle, and is thus liable to crush. As a result, in the bumper S, the pedestrian contacts a wider area of the front surface of the bumper S than in the conventional bumper, and therefore the impact from the bumper S easily collides with a wider portion of the pedestrian. Therefore, in the bumper S, the influence on the pedestrian who collides 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 of the same magnitude applied in the front-rear direction of the vehicle. Therefore, since the bumper S has the outer side portion 1 having the upper panel portion 12 and the lower panel portion 13, the front end of the upper panel portion 12 moves rearward more easily than the front end of the lower panel portion 13 in the event that a pedestrian collides with the bumper S of the vehicle. As a result, as described above, the bumper S can reduce the influence on the pedestrian who collides with the bumper S, compared to 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. The longitudinal direction of the second hole 131 is the same as the vehicle width direction of the vehicle, as is the first hole 121. The bumper S is easily crushed in the vehicle width direction uniformly rearward 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, 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 first holes 121 is arbitrary. In the lower panel portion 13, two second holes 131 are formed 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 respective plurality of first holes 121 in the vehicle width direction of the vehicle coincide with the center positions of the respective 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 such a manner that the front end of the upper panel portion 12 and the front end of the lower panel portion 13 are likely to move rearward uniformly.

[ Structure of inner side portion 2 ]

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

The inner portion 2 has a region having a コ -shaped cross section, for example. The inner portion 2 includes an outer plate portion 22, an upper plate portion 23, a lower plate portion 24, a first recess 25, and a second recess 26. The outer plate 22 is provided on the outer side 1 side. The upper panel portion 23 extends from the upper end of the outer panel portion 22 toward the inside of the vehicle. Specifically, the upper panel portion 23 extends 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 extends rearward in the vehicle longitudinal direction from the lower end of the outer panel portion 22.

The first recess 25 is a recess formed in an end portion 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 panel portion 23.

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

The fragile region 21 is a region having a first concave portion 25 and a second concave portion 26. The bumper S has such an inner portion 2, and thus the fragile region 21 is simply provided without increasing the number of components.

Modification example

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

Effect of the bumper S of the present embodiment

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

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 a shape are formed, when a pedestrian collides with the outer portion 1 of the bumper S from the front, the pedestrian presses the outer portion 1 rearward, and the front end of the upper panel portion 12 moves rearward more easily than the front end of the lower panel portion 13.

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 side portion 1 is easily crushed so as to move rearward in a state of being nearly parallel to the height direction of the vehicle. As a result, in the bumper S, the pedestrian contacts a wider area of the front surface of the bumper S than in the conventional bumper, so that the impact from the bumper S hits a wider area of the pedestrian. Therefore, in the bumper S, the influence on the pedestrian who collides with the vehicle can be reduced.

While the present disclosure has been described with reference to the embodiments, the technical scope of the present disclosure is not limited to the scope described in the embodiments, and various modifications and changes can be made within the scope of the gist thereof. For example, all or a part of the device may be functionally or physically separated and integrated in any unit. In addition, new embodiments generated by any combination of the plurality of embodiments are 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 day 20 and 9 of 2019 (Japanese patent application No. 2019-171105), the contents of which are incorporated herein by reference.

[ Industrial availability ]

The bumper of the present disclosure is useful in reducing the influence on pedestrians who collide with a vehicle.

[ description of reference numerals ]

S … bumper

1 … outer side

11 … outer side plate portion

12 … upper panel portion

121 … first hole

13 … lower panel portion

131 … second hole

2 … inner side

21 … frangible region

21a … first frangible region

21b … second frangible region

22 … outer side plate portion

23 … upper panel part

24 … lower panel portion

25 … first recess

26 and … second recess

3 … reinforcing member

3a … first reinforcing member

3b … second reinforcing member

31 … projection

9 … outer side

91 … outer side plate portion

92 … upper panel part

93 … lower panel part

Claims

1. A bumper is characterized in that,

having an outer side portion having: an outer panel portion provided outside the vehicle; an upper panel portion extending from an upper end of the outer panel portion toward an inside of the vehicle, the upper panel portion having a first hole; and a lower panel portion extending from a lower end of the outer panel portion toward the inner side 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. A bumper according to claim 1, wherein,

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

3. A bumper according to claim 1 or 2, characterized in that,

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

the length direction of the second hole is the same as the vehicle width direction.

4. A bumper according to claim 1 or 2, characterized in that,

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. A bumper according to claim 4, wherein,

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