JP7061282B2 - Underrun protector - Google Patents

Description

The present disclosure relates to an underrun protector.

Patent Document 1 describes a front underlamp protector having a hollow protector main body composed of a protector piece on the front side of the vehicle body and a protector piece on the rear side of the vehicle body. Thin steel plates extending in the vehicle width direction are used for the front and rear protector pieces. The front and rear protector pieces have a length dimension corresponding to the total width dimension of the vehicle body.

Japanese Patent Application Laid-Open No. 2003-276536

Just as a steel plate is used for the front and rear protector pieces in the front under lamp protector (under lamp protector) described in Patent Document 1, the under lamp protector is generally made of a material such as a highly rigid metal, so that the weight is heavy. Become. Therefore, in order to suppress the weight of the underlamp protector, the weight of the underlamp protector may be reduced. In this case, if the weight is reduced by reducing the thickness of the front and rear protector pieces and other members, the rigidity of the underrun protector may decrease. Further, if the length of the underlamp protector in the vehicle width direction is shortened to reduce the weight, the range in which the vehicle can be prevented from sneaking into the lower part is shortened.

Therefore, an object of the present disclosure is to provide an underlamp protector capable of suppressing a decrease in rigidity and reducing the weight while ensuring a desired length.

In order to solve the above problems, the first aspect of the present invention is a tubular underlamp rotor that extends in the vehicle width direction below one end of the vehicle in the front-rear direction and partitions an internal space inside. A first member and a second member are provided. The first member is formed to be long in the vehicle width direction and partitions at least one side of the internal space. The second member is formed long in the vehicle width direction, extends along the extension direction of the first member on the other side in the front-rear direction of the first member, and is fixed to the first member at least in the internal space. The other side is partitioned. Both ends of the second member in the extension direction are arranged inside the extension direction of the first member.

In the above structure, the underlamp rotor extending in the vehicle width direction below the end on one side in the front-rear direction of the vehicle includes a first member on one side in the front-rear direction and a second member on the other side in the front-rear direction. Both ends of the second member in the extension direction are arranged inside the extension direction of the first member. For example, in a front underlamp rotor extending in the vehicle width direction below the front (one side) end of the vehicle, both ends of the rear (other side) second member in the extension direction are the front first member. It is placed inside the extension direction rather than both ends in the extension direction. That is, the length of the second member in the extension direction (hereinafter, simply referred to as the length) on the side where the other vehicle does not collide (the other side) when colliding with another vehicle or the like is the side where the other vehicle collides. It is shorter than the length of the first member (on one side). Therefore, the length of the first member on one side is a desired length that secures a range (range in the vehicle width direction) that can prevent the other vehicle from slipping under the vehicle in the event of a collision with the other vehicle. In the state of being set to, the length of the second member on the other side can be shortened to reduce the weight of the underlamp protector.

Further, since both ends of the second member in the extension direction are arranged inside the extension direction of the first member in the extension direction, the length of the second member in the extension direction should be appropriately set. As a result, the region where the rigidity of the underlamp protector may decrease due to the weight reduction of the underlamp protector can be suppressed only to the outer end portion in the extension direction in which the influence on the rigidity of the underlamp protector is small.

Therefore, it is possible to suppress the decrease in rigidity and reduce the weight while ensuring a desired length.

A second aspect of the present invention is the underlamp protector of the first aspect, wherein the first member has a first vertical plate portion that intersects the front-rear direction and partitions the one side of the internal space, and a first member. (1) The vertical plate portion is formed in a substantially U-shaped cross section having a pair of upper and lower first horizontal plate portions facing each other in a state of extending from the upper and lower edges of the vertical plate portion to the other side and intersecting the vertical direction. The second member is in a state where the second vertical plate portion intersects the front-rear direction to partition the other side of the internal space and extends from the upper and lower edges of the second vertical plate portion to the one side and intersects the vertical direction. It is formed in a substantially U-shaped cross section having a pair of upper and lower second horizontal plate portions facing each other, and the edge portion on one side of the upper and lower second horizontal plate portions is the above-mentioned upper and lower first horizontal plate portions. It is fixed to the first member in a state of being vertically overlapped with respect to the edge portion on the other side. Both ends of the second vertical plate portion and the upper and lower second horizontal plate portions in the extending direction are arranged inside the extending direction of both ends of the first vertical plate portion in the extending direction. At least one of the upper and lower first horizontal plate portions, the outer end portion in the extending direction of the first horizontal plate portion is inclined with respect to the other end edge of the one first horizontal plate portion on the other side. It has an inclined edge extending from the other end edge toward the one side outside the extension direction to the outer end of the first horizontal plate portion in the extension direction. The inclined edge of the first horizontal plate portion is provided outside the outer edge of the second horizontal plate portion in the extending direction.

In the above configuration, the outer end portion of one of the first horizontal plate portions in the extending direction of the first member is inclined with respect to the other end edge of the other side in the front-rear direction of the one first horizontal plate portion. It has an inclined edge extending from the edge toward the outer side in the extension direction to the outer end of the first horizontal plate portion in the extension direction. That is, since the outer end portion of the first horizontal plate portion in the extending direction has a shape in which the corner portion on the other side is cut out, the weight can be further reduced by that amount.

Further, since the inclined end edge of the first horizontal plate portion is provided outside the outer edge of the second horizontal plate portion in the extending direction, it is provided on the first vertical plate portion of the first member in the event of a vehicle collision or the like. The input load is transmitted to the outer end portion of the second horizontal plate portion of the second member via the outer end portion of the first horizontal plate portion. For this reason, unlike the case where the other end of the inclined end edge of the first horizontal plate portion is arranged inside the outer end edge of the second horizontal plate portion in the extending direction, the second horizontal plate portion is used in the event of a vehicle collision or the like. The outer end portion of the second horizontal plate portion of the second member can be effectively functioned as a member that supports one member from the other side.

A third aspect of the present invention is the underrun protector of the first aspect or the second aspect of the present invention, which comprises a cap. The cap covers the outer end of the first member in the extension direction from the outside in the extension direction, the first region on one side, and the outer end in the extension direction of the second member from the outside in the extension direction. It has a second region on the side and is supported by the first member and the second member. The outer end of the second region of the cap in the extending direction is arranged outside the outer end of the first region of the cap in the extending direction.

In the above configuration, the first region of the cap covers the outer end of the first member in the extension direction from the outside in the extension direction, and the second region of the cap covers the outer end of the second member in the extension direction in the extension direction. Covering from the outside, the outer end of the second region of the cap in the extending direction is arranged outside the outer end of the first region of the cap in the extending direction. Therefore, when the length of the first member is set to the above-mentioned desired length that can prevent other vehicles from slipping under the vehicle, and it is desired to secure a longer length of the entire underrun protector. , Unlike the case where the first member and the second member are extended, the length of the underlamp protector can be secured while suppressing the increase in weight by appropriately setting the length of the second region of the cap. ..

According to the present disclosure, it is possible to suppress a decrease in rigidity and reduce the weight of the underlamp protector while ensuring a desired length.

It is an external side view of the vehicle provided with the underrun protector which concerns on this embodiment. It is a perspective view which looked at the main part of the vehicle of FIG. 1 from the diagonally front upper side. It is a perspective view which looked at the FUP of FIG. 1 from diagonally rearward and lower side. FIG. 3 is a plan view of the main part of the FUP in FIG. 3 as viewed from above.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the figure, the arrow FR indicates the front of the vehicle, UP indicates the upper side, and IN indicates the inside in the vehicle width direction. Further, in the following description, the front-rear direction means the front-rear direction of the vehicle 1, and the left-right direction means the left-right direction in a state of facing the front of the vehicle 1.

As shown in FIGS. 1 and 2, the vehicle 1 according to the present embodiment is a cab-over type vehicle 1 in which the cab 2 is located substantially above the engine (not shown), and is a front end portion (front and rear) of the vehicle 1. It has a front underlamp protector (underlamp rotor) 10 (hereinafter referred to as FUP10) extending in the vehicle width direction below the end on one side in the direction. The FUP 10 is supported at the front end of the vehicle body frame 3 of the vehicle 1 via a pair of left and right brackets 4. The FUP 10 according to the present embodiment has a central region 10a extending linearly in the vehicle width direction and left and right outer sides inclined from both ends of the central region 10a in the vehicle width direction to the rear outside in the vehicle width direction with respect to the central region 10a. It is composed of a region 10b. One ends of the left and right brackets 4 are fixed to the rear surfaces of both ends of the central region 10a in the vehicle width direction. The other ends of the left and right brackets 4 are fixed to the front end of the vehicle body frame 3.

As shown in FIGS. 2 to 4, the FUP 10 includes a front member (first member) 11 on the front side (one side in the front-rear direction) and a rear member (second member) 12 on the rear side (other side in the front-rear direction). And a pair of left and right caps 13. The FUP 10 is formed by the front member 11 and the rear member 12 into a long rectangular cylinder in the vehicle width direction, and internally partitions the internal space 14.

The front member 11 has a cross section so as to be opened rearward by the front plate portion (first vertical plate portion) 15, the upper plate portion (first horizontal plate portion) 16, and the lower plate portion (first horizontal plate portion) 17. It is formed in a long shape in the vehicle width direction, and is integrally molded from the outer region 10b on the left side of the FUP 10 to the outer region 10b on the right side via the central region 10a. That is, the extension direction of the front member 11 is the vehicle width direction in the central region 10a of the FUP 10, and is inclined with respect to the vehicle width direction from the inside to the outside rear in the left and right outer regions 10b of the FUP 10. The direction. The front plate portion 15 intersects the front-rear direction to partition the front of the internal space 14 of the FUP 10. The upper plate portion 16 extends rearward from the upper end edge of the front plate portion 15 and intersects the vertical direction. The lower plate portion 17 faces the upper plate portion 16 in a state of extending rearward from the lower end edge of the front plate portion 15 and intersecting the vertical direction. The outer end edges of the front plate portion 15, the upper plate portion 16, and the lower plate portion 17 in the extension direction are arranged at the same positions in the extension direction, and define the outer end 22 of the front member 11 in the extension direction. Inclined end edges 23, which will be described later, are provided at the outer ends of the upper plate portion 16 and the lower plate portion 17 on both sides in the extending direction. The length of the front member 11 in the extending direction (hereinafter, simply referred to as the length) is a range (range in the vehicle width direction) capable of preventing another vehicle from slipping under the vehicle when colliding with another vehicle or the like. ) Is set to the secured desired length.

The rear member 12 has a cross section such that the rear member 12 is opened forward by the rear plate portion (second vertical plate portion) 18, the upper plate portion (second horizontal plate portion) 19, and the lower plate portion (second horizontal plate portion) 20. It is formed in a long shape in the vehicle width direction, and is integrally formed from the outer region 10b on the left side of the FUP 10 to the outer region 10b on the right side via the central region 10a. That is, the extension direction of the rear member 12 is the vehicle width direction in the central region 10a of the FUP 10, and is inclined with respect to the vehicle width direction from the inside to the outside rear in the left and right outer regions 10b of the FUP 10. The direction. The rear member 12 extends behind the front member 11 along the extending direction of the front member 11 and is fixed to the front member 11. The rear plate portion 18 intersects the front-rear direction to partition the rear of the internal space 14 of the FUP 10. The upper plate portion 19 extends forward from the upper end edge of the rear plate portion 18 and intersects the vertical direction. The front end edge portion (one side edge portion in the front-rear direction) 19a of the upper plate portion 19 is connected to the rear end edge portion (other end edge portion in the front-rear direction) 16a of the upper plate portion 16 of the front member 11 from below. It is fixed by welding or the like in an overlapping state. The upper plate portion 19 partitions the upper part of the internal space 14 together with the upper plate portion 16 of the front member 11. The lower plate portion 20 faces the upper plate portion 19 in a state of extending forward from the lower end edge of the rear plate portion 18 and intersecting the vertical direction. The front end edge portion (not shown) of the lower plate portion 20 is fixed to the rear end edge portion 17a of the lower plate portion 17 of the front member 11 by welding or the like in a state of being overlapped from above. The lower plate portion 20 partitions the lower part of the internal space 14 together with the lower plate portion 17 of the front member 11. The length of the rear member 12 is shorter than the length of the front member 11. The outer end edges of the rear plate portion 18, the upper plate portion 19, and the lower plate portion 20 in the extension direction are arranged at the same positions in the extension direction, and define the outer end 21 of the rear member 12 in the extension direction. The outer ends 21 on both sides of the rear member 12 in the extension direction are inside the extension direction (inside in the vehicle width direction along the extension direction) from the outer ends 22 on both sides of the front member 11 in the extension direction. Be placed. That is, both ends (outer ends 21) of the upper plate portion 19 and the lower plate portion 20 of the rear member 12 in the extending direction are larger than both ends (outer ends 22) of the front plate portion 15 of the front member 11 in the extending direction. It is placed inside the extension direction.

Left and right caps 13 are attached to the rear member 12 and the front member 11 so as to cover the outer ends 21 on both sides of the rear member 12 and the outer ends 22 on both sides of the front member 11 from the outside in the extending direction. Since the structures of the outer end portions on both sides of the FUP 10 in the extending direction are symmetrical and have substantially the same configuration, the left side will be described below, and the right side will be omitted. Further, since the upper plate portion 16 of the front member 11 and the inclined edge 23 of the lower plate portion 17 are provided symmetrically in the vertical direction and have substantially the same configuration, the upper plate portion 16 of the front member 11 is inclined below. The edge 23 will be described, and the description of the inclined edge 23 of the lower plate portion 17 will be omitted.

The inclined end edge 23 of the outer end portion of the upper plate portion 16 of the front member 11 in the extension direction is a rear end edge (other end edge) 24 extending linearly along the extension direction on the rear side of the upper plate portion 16. Extends from the outer end of the rear end edge 24 toward the outer front in the extension direction to the outer end edge 25 (outer end 22 of the front member 11) in the extension direction of the upper plate portion 16 in an inclined state. .. The outer end 21 of the rear member 12 in the extension direction is arranged at substantially the same position as the rear end of the inclined end edge 23 of the upper plate portion 16 of the front member 11 in the extension direction. That is, the inclined end edge 23 of the upper plate portion 16 of the front member 11 is provided outside the extension direction of the outer end edge 26 of the upper plate portion 19 of the rear member 12 in the extension direction.

The cap 13 has a front region (first region) 13a that covers the outer end 22 of the front member 11 from the outside in the extension direction, and a rear region (second region) 13a that covers the outer end 21 of the rear member 12 from the outside in the extension direction. Region) 13b and integrally. The inner end portion of the cap 13 in the vehicle width direction is fixed to the outer end portion of the front member 11 in the extension direction and the outer end portion of the rear member 12 in the extension direction, and the cap 13 is attached to the front member 11 and the rear member 12. Be supported. The cap 13 closes the internal space 14 of the FUP 10 from the outside in the vehicle width direction. The length of the rear region 13b in the extension direction is longer than the length of the front region 13a in the extension direction. The outer end surface 13c of the cap 13 in the extending direction extends from the front to the rear outside in the vehicle width direction and is inclined with respect to the front-rear direction. That is, the outer end 28 of the rear side region 13b in the extension direction is arranged outside the extension direction of the outer end 27 of the front side region 13a in the extension direction.

In the FUP 10 configured as described above, the outer ends 21 on both sides of the rear member 12 in the extension direction are arranged inside the outer ends 22 on both sides of the front member 11 in the extension direction. .. That is, the length of the rear member 12 on the rear side where the other vehicle does not collide when colliding with another vehicle or the like is shorter than the length of the front member 11 on the front side where the other vehicle collides. Further, the length of the front member 11 is set to a desired length that secures a range (range in the vehicle width direction) that can prevent the other vehicle from slipping under the vehicle in the event of a collision with another vehicle or the like. To. In this way, the length of the rear member 12 is set to a desired length that can prevent the other vehicle from sneaking into the lower part of the vehicle when the front member 11 collides with the other vehicle or the like. Can be shortened to reduce the weight of the FUP 10.

Further, since the outer ends 21 on both sides of the rear member 12 in the extension direction are arranged inside the outer ends 22 on both sides in the extension direction of the front member 11, the length of the rear member 12 can be increased. By properly setting, the region where the rigidity of the FUP 10 may decrease due to the weight reduction of the FUP 10 can be suppressed only to the outer end portion in the extension direction in which the influence on the rigidity of the FUP 10 is small.

Further, inclined end edges 23 are provided at the outer end portions on both sides of the upper plate portion 16 and the lower plate portion 17 (hereinafter referred to as upper and lower plate portions 16 and 17) of the front member 11 in the extending direction, and are inclined. The end edge 23 is inclined with respect to the rear end edge 24 extending linearly along the extension direction on the rear side of the upper and lower plate portions 16 and 17 of the front member 11, and extends from the rear end edge 24 in the extension direction. The upper and lower plate portions 16 and 17 of the front member 11 extend to the outer end edge 25 in the extending direction toward the front of the outside. That is, the outer end portions of the upper and lower plate portions 16 and 17 of the front member 11 in the extending direction have a shape in which the rear corner portion 29 (indicated by a two-dot chain line in FIG. 4) is cut out. However, the weight of the FUP 10 can be further reduced.

Further, the inclined end edges 23 of the upper and lower plate portions 16 and 17 of the front member 11 are in the extending direction of the upper plate portion 19 and the lower plate portion 20 (hereinafter referred to as upper and lower plate portions 19 and 20) of the rear member 12. Since it is provided outside the outer end edge 26 in the extending direction, the load input to the front plate portion 15 of the front member 11 at the time of a collision of the vehicle 1 is applied to the upper and lower plate portions 16 and 17 of the front member 11. It is transmitted to the outer ends of the upper and lower plate portions 19 and 20 of the rear member 12 via the outer end portion. Therefore, unlike the case where the rear end portion of the inclined end edge 23 of the upper and lower plate portions 16 and 17 is arranged inside the outer end edge 26 of the upper and lower plate portions 19 and 20 of the rear member 12 in the extending direction. As a member that supports the front member 11 from the rear in the event of a collision of the vehicle 1, the outer ends of the upper and lower plate portions 19 and 20 of the rear member 12 can be effectively functioned. Therefore, while ensuring the support rigidity of the front member 11 by the rear member 12, the corner portions 29 of the upper and lower plate portions 16 and 17 of the front member 11 can be cut out to reduce the weight of the FUP 10.

Further, the outer end 28 of the rear side region 13b of the cap 13 in the extension direction is arranged outside the extension direction of the outer end 27 of the front side region 13a in the extension direction. Therefore, when it is desired to secure a longer overall length of the FUP 10 while the length of the front member 11 is set to the above-mentioned desired length that can prevent another vehicle from slipping under the vehicle 1. Unlike the case where the front member 11 and the rear member 12 are extended, the length of the FUP 10 can be secured while suppressing the increase in weight by appropriately setting the length of the rear region 13b of the cap 13.

Therefore, according to the present embodiment, it is possible to suppress a decrease in rigidity and reduce the weight while ensuring a desired length.

In the present embodiment, the FUP 10 is composed of the central region 10a and the left and right outer regions 10b, but the present invention is not limited to this, and for example, the FUP 10 is linearly formed in the vehicle width direction between both ends in the vehicle width direction. It may be an extended FUP.

Further, in the present embodiment, the FUP 10 is formed in a cylindrical shape by the front member 11 having a U-shaped cross section and the rear member 12 having a U-shaped cross section, but the cross-sectional shapes of the front member 11 and the rear member 12 are limited to this. It's not something. The front member 11 may partition at least the front of the internal space 14 of the FUP 10, and the rear member 12 may partition at least the rear of the internal space 14 of the FUP 10. For example, the front member 11 and the rear member 12 having a semicircular cross section may be used.

Further, in the present embodiment, the front end edge portion 19a of the upper plate portion 19 of the rear member 12 is overlapped with the rear end edge portion 16a of the upper plate portion 16 of the front member 11 from below, but the upper plate portion of the rear member 12 is overlapped. The front end edge portion 19a of 19 may be overlapped with the rear end edge portion 16a of the upper plate portion 16 of the front member 11 from above. Further, in the present embodiment, the front end edge portion of the lower plate portion 20 is overlapped with the rear end edge portion 17a of the lower plate portion 17 of the front member 11 from above, but the front end edge portion of the lower plate portion 20 is overlapped with the front member. It may be overlapped with the rear end edge portion 17a of the lower plate portion 17 of 11 from below.

Further, in the present embodiment, the inclined end edges 23 are provided on both the upper and lower plate portions 16 and 17 of the front member 11, but the inclined end edges 23 are provided on either of the upper and lower plate portions 16 and 17 of the front member 11. The edge 23 may be provided. Alternatively, it is not necessary to provide the inclined edge 23 on both the upper and lower plate portions 16 and 17 of the front member 11.

Further, in the present embodiment, the left and right caps 13 are provided at both ends of the FUP 10 in the extending direction, but the left and right caps 13 may not be provided.

Further, in the present embodiment, the underlamp rotor according to the present disclosure is applied to the FUP 10 extending in the vehicle width direction below the front end portion of the vehicle 1, but the present invention is not limited to this, and the rear end portion of the vehicle 1 is not limited to this. It may be applied to the rear underramp rotor (underramp rotor) 30 (see FIG. 1) extending in the vehicle width direction below (one end in the front-rear direction). In this case, the rear side is one side in the front-rear direction, and the front side is the other side in the front-rear direction.

Although the present invention has been described above based on the above-described embodiment, the present invention is not limited to the contents of the above-described embodiment, and can be appropriately modified without departing from the present invention. That is, it goes without saying that all other embodiments, examples, operational techniques, and the like made by those skilled in the art based on this embodiment are included in the scope of the present invention.

For example, in the above embodiment, the underlamp protector according to the present disclosure is applied to the cab-over type vehicle 1, but it may be applied to a vehicle other than the cab-over type vehicle 1.

The vehicle underrun protector of the present invention can be widely used for trucks and other vehicles.

1: Vehicle 10: Front underrun protector (underrun protector)
11: Front member (first member)
12: Rear member (second member)
13: Cap 13a: Front area of the cap (first area)
13b: Rear area of the cap (second area)
14: Internal space 15: Front plate portion of front member (first vertical plate portion)
16: Upper plate part of the front member (first horizontal plate part)
17: Lower plate part of the front member (first horizontal plate part)
18: Rear plate part of the rear member (second vertical plate part)
19: Upper plate part of the rear member (second horizontal plate part)
20: Lower plate part of the rear member (second horizontal plate part)
21: Outer end of the rear member 22: Outer end of the front member 23: Inclined end edge 24: Rear end edge of the front member (the other end edge of the first horizontal plate portion of the first member)
26: Outer edge of the rear member (outer edge of the second horizontal plate of the second member)
30: Rear underrun protector (underrun protector)

Claims (2)

A cylindrical underlamp protector that extends in the vehicle width direction below one end of the vehicle in the front-rear direction and divides the internal space inside.
A first member formed long in the vehicle width direction and partitioning at least one side of the internal space, and
It is formed long in the vehicle width direction, extends along the extending direction of the first member on the other side in the front-rear direction of the first member, is fixed to the first member, and is at least said in the internal space. The second member that separates the other side and
The first region on one side that covers the outer end of the first member in the extension direction from the outside of the extension direction, and the outer end of the second member in the extension direction from the outside of the extension direction. It has a second region on the other side to cover, and includes a first member and a cap supported by the second member .
Both ends of the second member in the extension direction are arranged inside the extension direction from both ends of the first member in the extension direction .
The outer end of the second region of the cap in the extension direction is arranged outside the outer end of the first region of the cap in the extension direction.
The underrun protector is characterized by that. A cylindrical underlamp protector that extends in the vehicle width direction below one end of the vehicle in the front-rear direction and divides the internal space inside .
A first member formed long in the vehicle width direction and partitioning at least one side of the internal space, and
It is formed long in the vehicle width direction, extends along the extending direction of the first member on the other side in the front-rear direction of the first member, is fixed to the first member, and is at least said in the internal space. With a second member that partitions the other side,
Both ends of the second member in the extension direction are arranged inside the extension direction from both ends of the first member in the extension direction.
The first member has a first vertical plate portion that intersects the front-rear direction and divides the one side of the internal space, and extends in the vertical direction from the upper and lower edge edges of the first vertical plate portion to the other side. It is formed in a substantially U-shaped cross section having a pair of upper and lower first horizontal plate portions facing each other in a crossed state.
The second member has a second vertical plate portion that intersects the front-rear direction and partitions the other side of the internal space, and extends in the vertical direction from the upper and lower edge edges of the second vertical plate portion to the one side. It is formed in a substantially U-shaped cross section having a pair of upper and lower second horizontal plate portions facing each other in a crossed state, and the one-sided end edge portion of the upper and lower second horizontal plate portions is the upper and lower first. It is fixed to the first member in a state of being vertically overlapped with the other end edge portion of the horizontal plate portion.
Both ends of the second vertical plate portion and the upper and lower second horizontal plate portions in the extension direction are arranged inside the extension direction from both ends of the first vertical plate portion in the extension direction.
The outer end portion of the first horizontal plate portion of at least one of the upper and lower first horizontal plate portions in the extending direction is inclined with respect to the other end edge of the one first horizontal plate portion on the other side. It has an inclined edge extending from the other end edge toward the one side outside the extension direction to the outer end of the one first horizontal plate portion in the extension direction.
An underrun protector characterized in that the inclined end edge of the one first horizontal plate portion is provided outside the outer end edge of the second horizontal plate portion in the extending direction.

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