Truck body

Abstract

To provide a vehicle body of a truck that can secure rigidity that is required in a torsion mode of a vehicle body and suppress a rope for fixing a cargo from loosening.SOLUTION: A vehicle body 1 of a truck is equipped with a rear deck 13 which includes at least a floor panel 131, a pair of side panels 133 and 134, a bolster 138 extending in a width direction of the vehicle body along a side part of a rear end of the floor panel and a tail gate 135. Strut members 137 extended in a vertical direction z of the vehicle body and joined to the side panels and the bolster are provided at a left end part and a right end part respectively of the bolster, which are rear end parts of the side panels. The strut members include strut upper parts 137a extending from the bolster to an upper side of the vehicle body and strut lower parts 137c extending from the bolster to a lower side of the vehicle body. A horizontal cross section of one of the strut upper part and the strut lower part is formed into a non-bag shape cross section structure in which outside in the width direction of the vehicle body is opened, and a horizontal cross section of the other of the strut upper part and the strut lower part is formed into a non-bag shape cross section structure in which inside in the width direction of the vehicle body is opened.SELECTED DRAWING: Figure 10

Description

[Technical field]

[0001] The present invention relates to a truck body having a cargo bed behind a cabin. [Background technology]

[0002] In a truck bed structure, a truck body is known in which a post having a bag-shaped closed structure (approximately box cross section) in horizontal cross section is provided on the side of the tailgate to ensure rigidity (Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Jpn. Jpn. Published No. 61-11113 Summary of the Invention [Problem to be solved by the invention]

[0004] In some truck designs, rear combination lamps are attached to the sides of the tailgate of the loading platform. In such designs, the presence of the rear combination lamps makes it impossible to make the structure of the side of the tailgate have a substantially box-shaped cross-section, which means that the rigidity required in the torsional mode of the vehicle body cannot be sufficiently secured, resulting in a problem that the fastening of the ropes for securing the cargo becomes loose.

[0005] The problem that the present invention aims to solve is to provide a truck body that can ensure the rigidity required in the torsional mode of the body, and can prevent ropes for securing cargo from loosening. [Means for solving the problem]

[0006] The present invention solves the above problem by providing support members at the rear end of the side panel of the loading platform and at the left and right ends of the bolster, each of which extends in the vertical direction of the vehicle body and is joined to the side panel and the bolster, and includes an upper support member extending from the bolster to the upper side of the vehicle body and a lower support member extending from the bolster to the lower side of the vehicle body, and by forming the horizontal cross sections of the upper and lower support members into a partially open, non-bag-shaped cross-sectional structure in which one complements the other. has a surface along the front-rear direction of the vehicle body and a surface along the width direction of the vehicle body. horizontal section It consists of The outer side in the width direction of the vehicle body is open and has a non-bag-shaped cross-sectional structure, and the other of the upper support pillar and the lower support pillar is has a surface along the front-rear direction of the vehicle body and a surface along the width direction of the vehicle body. horizontal section It consists of The above problem is solved by making the cross-sectional structure non-bag-shaped, with the inside in the width direction of the vehicle body being open. Effect of the Invention

[0007] According to the present invention, when a torsion mode is input to the vehicle body, the upper part of the left support member falls inward and the lower part falls outward, and the upper part of the right support member falls outward and the lower part falls inward, and this torsional deformation is repeated alternately on the left and right. At this time, since the upper part of the support member has a non-bag-shaped cross-sectional structure with a partially open horizontal cross section, the rigidity of the upper part of the left support member when it falls outward differs from the rigidity of the upper part of the right support member when it falls inward. However, since the lower part of the support member has a non-bag-shaped cross-sectional structure that complements the upper part of the support member, if the rigidity of the upper part of the support member when it falls outward is small, the rigidity of the lower part of the support member when it falls inward is large. Therefore, when the torsion mode is input to the vehicle body and the inward and outward collapses are repeated, the rigidity difference between the left and right support members becomes zero or approximately zero. As a result, it is possible to suppress the lashing of the rope hung on the loading platform from loosening. [Brief description of the drawings]

[0008] [Figure 1A] 1 is a side view showing an embodiment of a truck body of the present invention. [Figure 1B] 1B is a perspective view showing an undercarriage structure and a loading platform of the truck body of FIG. 1A. FIG. [Diagram 2] FIG. 2 is a perspective view showing the bed of the truck in FIG. 1. [Diagram 3] FIG. 3 is an exploded perspective view showing a part of the loading platform of FIG. 2; [Figure 4] FIG. 4 is a cross-sectional view taken along line IV-IV in FIG. [Diagram 5] FIG. 3 is a cross-sectional view taken along line VV in FIG. [Figure 6] FIG. 3 is an exploded perspective view of a portion VI in FIG. 2 as viewed from below. [Figure 7] FIG. 2 is a perspective view showing an embodiment of a support member and a bolster according to the present invention. [Figure 8A] 1 is a perspective view showing an embodiment of a support member according to the present invention; [Figure 8B] 1 is an exploded perspective view showing an embodiment of a support member according to the present invention; [Figure 9A] FIG. 2 is a perspective view showing one embodiment of a diagonal brace and a bolster according to the present invention. [Figure 9B] FIG. 2 is an exploded perspective view showing an embodiment of a brace member and a bolster according to the present invention. [Figure 10] 1 is a schematic diagram showing an embodiment of a structure including a support member, a bolster, and a diagonal brace member according to the present invention. FIG. [Figure 11] 11 is a schematic diagram showing a displacement when a torsion mode is input to the structure shown in FIG. 10. FIG. [Figure 12] 11 is a schematic diagram showing a displacement when a torsion mode is input to the structure according to the comparative example of FIG. 10. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. Fig. 1A is a side view showing one embodiment of a completed truck including a truck body 1 of the present invention, and Fig. 1B is a perspective view showing an undercarriage structure 14 and a cargo bed 13 extracted from the truck body 1 of Fig. 1A. In the xyz space shown in each figure, x indicates the width direction of the body 1, y indicates the front-rear direction of the body 1, and z indicates the up-down direction of the body 1. The truck body 1 of the present invention includes an engine room 11 in which an engine serving as a driving power source is mounted, a cabin 12 in which a driver and passengers ride, and a cargo bed 13 on which luggage and the like are mounted, and these are supported on the undercarriage structure 14.

[0010] The present invention can be applied to any truck body 1 having an open-top cargo bed 13, a tailgate 135 of the cargo bed 13 supported on the rear end of the floor panel 131 via a hinge 136 so as to be able to be opened and closed, and rear combination lamps 15 and other fittings attached to the rear ends of the side panels 133, 134, and the structure of the engine room 11, cabin 12, etc. is not limited in any way to the configuration described in this embodiment.

[0011] FIG. 2 is a perspective view showing the bed 13 of the truck of this embodiment, FIG. 3 is an exploded perspective view showing a part of the bed 13 in an exploded state, and FIG. 4 is a cross-sectional view taken along line IV-IV in FIG. 2. The bed 13 includes a substantially rectangular floor panel 131, a front end panel 132, a pair of side panels 133 and 134, and a tailgate 135. The front end panel 132 is fixed to the front end of the substantially rectangular floor panel 131 in an upright position, the side panels 133 and 134 are fixed to the left and right ends of the floor panel 131 in an upright position, respectively, and the tailgate 135 is supported at the rear end of the floor panel 131 via hinges 136 and 136 so as to be openable and closable, forming a square-shaped bed 13. The floor panel 131, the front end panel 132, the pair of side panels 133 and 134, and the tailgate 135 are assembled components formed by joining a plurality of panel components together by welding or the like.

[0012] For example, floor panel 131 is an assembly in which a plate material on which multiple beads are formed along the front-rear direction of the vehicle and multiple reinforcing members perpendicular to the plate material are joined by welding or the like as shown in Fig. 3. Also, side panels 133, 134 are assemblies in which side panel outer 133a and side panel inner 133b are joined by welding or the like as shown in Fig. 4, and the lower end of side panel inner 133b is joined to floor panel 131.

[0013] Fig. 5 is a cross-sectional view taken along line VV in Fig. 2, showing a joint between the front end panel 132 and the side panel 133 at the left and right front corners of the loading platform 13 cut horizontally and viewed from above. In Fig. 5, the lower side shows the outside (+x direction) of the vehicle body 1, and the left side shows the front (+y direction) of the vehicle body 1. In this horizontal cross-section, the front end panel 132 is joined to a flange of the side panel outer by spot welding or the like via an extension panel 132a. The front end panel 132 is also joined to a flange 133c at the front end of the side panel inner 133b by spot welding or the like.

[0014] Here, the flange 133c at the front end of the side panel inner 133b of this embodiment is bent toward the center of the vehicle body 1, and the edge 133d is exposed toward the center of the loading platform 13. In the vehicle body 1 of this embodiment, after electrocoating, a rust-preventive vinyl chloride sealant is applied to this edge 133d and hardened in a sealant drying oven, a middle coat drying oven, or a top coat drying oven. This prevents rust on the mating surface between the front end panel 132 and the flange 133c of the side panel inner 133b and on the edge 133d.

[0015] However, if the flange 133c at the front end of the side panel inner 133b is folded in the opposite direction, that is, toward the outside of the vehicle body 1, instead of toward the center of the vehicle body 1 as shown in Fig. 5, the anti-rust sealant to be applied to the mating surface between the front end panel 132 and the flange 133c of the side panel inner 133b must be applied not to the edge 133d folded outward, but to the gap where the folded part of the flange 133c and the front end panel 132 butt together, because rainwater would seep in from the cargo bed 13 side.

[0016] However, it has been known that the box-shaped cargo bed 13 with an open top twists due to the torsional mode during travel, causing a large twist in the portion where the bent portion of the flange 133c meets the front end panel 132, which may cause the sealant to crack. However, if the flange 133c at the front end of the side panel inner 133b is bent toward the center of the vehicle body 1 and a sealant is applied to the edge 133d as in this embodiment, the sealant will not crack even if a torsional force is applied.

[0017] FIG. 6 is an exploded perspective view of the VI portion of FIG. 2 from bottom to top, and FIG. 7 is a perspective view showing an embodiment of the support member 137 and the bolster 138 according to the present invention. As shown in FIG. 2, in the loading platform 13 of this embodiment, the front ends of the pair of side panels 133, 134 are fixed to the front end panel 132, respectively, so that the left and right corners of the front side of the loading platform 13 are relatively rigid. However, the left and right corners of the rear side of the loading platform 13 are less rigid than the front end because there is no structural member supporting the rear ends of the pair of side panels 133, 134. Therefore, in this embodiment, a pair of support members 137 extending in the up-down direction of the vehicle body 1 is provided at the rear ends of the side panels 133, 134, and at the left and right ends of the bolster 138. The support member 137 is a structure also called a strut or post.

[0018] The support member 137 of this embodiment is an assembly part including a support upper part 137a extending from the bolster 138 to the upper side of the vehicle body, and a support lower part 137c extending from the bolster 138 to the lower side of the vehicle body. For example, the support member 137 of this embodiment is assembled with a support upper outer part 137b and a reinforcement 137d in addition to the support upper part 137a and the support lower part 137c. The bolster 138 is joined to the rear end edge part of the floor panel 131 by welding or the like, and is a structure that extends in the width direction of the vehicle body 1 along the rear end edge part of the floor panel 131.

[0019] Fig. 8A is a perspective view showing one embodiment of support member 137 according to the present invention, and Fig. 8B is an exploded perspective view of support member 137, which shows a support member provided at the right end of bolster 138, as in Fig. 7. As shown in these figures, support upper part 137a extending from bolster 138 to the upper side of the vehicle body and support lower part 137c extending from bolster 138 to the lower side of the vehicle body are joined by welding or the like, and support upper outer part 137b and reinforcement 137d (not shown in Figs. 8A and 8B) are joined thereto by welding or the like.

[0020] Fig. 9A is a perspective view showing one embodiment of a diagonal brace member 139 and a bolster 138 according to the present invention, and Fig. 9B is an exploded perspective view thereof. As shown in Fig. 7, the diagonal brace member 139 of this embodiment is a structure in which a lower support column 137c of a support column member 137 is joined to a bolster 138 by welding or the like, and which enhances the torsional rigidity of the support column member 137 and the bolster 138, like a diagonal brace in a building.

[0021] 10 is a diagram showing a schematic structure of the rear end of the loading platform 13 including a pair of support members 137, a bolster 138, and a diagonal brace member 139 according to this embodiment, in which the left-right direction corresponds to the width direction x of the vehicle body 1, the up-down direction corresponds to the up-down direction z of the vehicle body 1, and the direction perpendicular to the paper surface corresponds to the front-rear direction y of the vehicle body 1. Here, the cross-sectional view along the line UP-UP in the figure is a cross-sectional view of the support member 137 when the support upper part 137a extending from the bolster 138 to the upper side of the vehicle body is cut horizontally and viewed from above downward, and the cross-sectional view along the line LW-LW in the figure is a cross-sectional view of the support member 137 when the support lower part 137c extending from the bolster 138 to the lower side of the vehicle body is cut horizontally and viewed from above downward.

[0022] The pillar upper portion 137a of the pillar member 137 extending from the bolster 138 to the upper side of the vehicle body cannot have a bag-shaped structure in horizontal cross section in order to avoid interference with the fittings such as the rear combination lamp 15 attached to the rear ends of the side panels 133, 134. Therefore, as shown in the cross-sectional view along the UP-UP line in Fig. 10, the pillar upper portion 137a of the pillar member 137 extending from the bolster 138 to the upper side of the vehicle body has a partially open non-bag-shaped cross-sectional structure in order to avoid interference with the fittings such as the rear combination lamp 15. In other words, the pillar upper portion 137a has a non-bag-shaped cross-sectional structure in horizontal cross section in which the outer side in the width direction of the vehicle body 1 is open, and the rear combination lamp 15 is attached in the space of the open cross-sectional portion.

[0023] In contrast, the lower support portion 137c of the support member 137 extending from the bolster 138 to the lower side of the vehicle body does not have any fittings attached thereto, so there is no need to avoid interference with the fittings, and the support portion 137c can be a highly rigid structure having a bag-shaped horizontal cross section. However, as shown in the cross-sectional view taken along the line LW-LW in Fig. 10, the lower support portion 137c of this embodiment has a horizontal cross section that complements the partially open non-bag-shaped cross section of the upper support portion 137a. That is, the lower support portion 137c has a horizontal cross section that is a non-bag-shaped cross section with an open inner side in the width direction of the vehicle body 1, and when combined with the non-bag-shaped cross section of the upper support portion 137a, a bag-shaped cross section is formed.

[0024] In this manner, in the support member 137 of this embodiment, if the support upper part 137a has a non-bag-shaped cross-sectional structure with the outer side in the width direction of the vehicle body 1 open, then the support lower part 137c has a non-bag-shaped cross-sectional structure with the inner side in the width direction of the vehicle body 1 open. The "relationship in which one complements the other" of the present invention refers to a horizontal cross-sectional structure having such a relationship, and it is preferable that the two horizontal cross-sectional structures are combined to form a bag-shaped cross-sectional structure, but even if it is not a completely bag-shaped cross-sectional structure, it is sufficient that the rigidity of the support upper part 137a and the rigidity of the support lower part 137c are at least inversely related with respect to the torsional rigidity of the vehicle body 1. This relationship will be described with reference to FIG. 11.

[0025] FIG. 11 is a schematic diagram showing the displacement when a torsion mode is input to the structure shown in FIG. 10, and shows, for example, a case where a pair of support members 137, 137 in FIG. 10 falls to the left due to the torsion of the vehicle body 1. As shown in FIG. 11, the left support member 137 falls toward the outside of the vehicle body 1 (hereinafter also referred to as outward falling), and the right support member 137 falls toward the inside of the vehicle body 1 (hereinafter also referred to as inward falling). In the case of such a torsion mode, the support upper portion 137a of the left support member 137 has a non-bag-shaped cross-sectional structure with an open outer side, so that it has a relatively low rigidity against the external force of the outward falling. However, the support lower portion 137c has a non-bag-shaped cross-sectional structure with an open inner side, and the outer side is not open, so that it has a relatively high rigidity against the external force. Therefore, the low rigidity of the support upper portion 137a is complemented by the high rigidity of the support lower portion 137c.

[0026] The same applies to the right support member 137 in FIG. 11. That is, the support upper portion 137a of the right support member 137 that falls inward has a non-bag-shaped cross-sectional structure with an open outer side and a non-open inner side, so that it has a relatively high rigidity against the external force of the inward fall. However, the support lower portion 137c has a non-bag-shaped cross-sectional structure with an open inner side, so that it has a relatively low rigidity against the external force. Therefore, the low rigidity of the support lower portion 137c is complemented by the high rigidity of the support upper portion 137a. In this way, the "relationship in which one complements the other" of the present invention means that, for an external force in a specific direction, if the rigidity of the support upper portion 137a is high, the rigidity of the support lower portion 137c is low, and if the rigidity of the support upper portion 137a is low, the rigidity of the support lower portion 137c is high.

[0027] In particular, the horizontal cross section of the support member 137 of this embodiment is not made into a bag-shaped cross-sectional structure with high rigidity, but is made into a non-bag-shaped cross-sectional structure in order to make the rigidity when the support member 137 falls inward and the rigidity when it falls outward as equal as possible. That is, as shown in FIG. 11, when the vehicle body 1 twists, one of the left and right support members 137, 137 falls outward and the other falls inward, and this is repeated alternately. In the support member 137 of this embodiment, the rigidity when the support member 137 falls inward and the rigidity when it falls outward are made as equal as possible as a whole by complementing the rigidity of the support upper part 137a with the rigidity of the support lower part 137c. Therefore, as shown in the figure, the torsional displacement ΔL when the left support member 137 falls outward and the torsional displacement ΔR when the right support member 137 falls inward are made as equal as possible.

[0028] In contrast to this, a comparative example will be described in which the horizontal cross section of the lower support column 137c has a highly rigid bag-shaped cross section. Fig. 12 is a schematic diagram showing the displacement when a torsion mode is input to the structure according to the comparative example of Fig. 10. The upper support column 137a of the support column member 137 according to the comparative example has a non-bag-shaped cross section structure with an open outer side, which is the same as the support column member 137 of this embodiment shown in Fig. 10. However, the lower support column 137c of the support column member 137 according to the comparative example has a bag-shaped cross section structure as shown in the LW-LW cross section of Fig. 12.

[0029] When a torsional input is applied to the support member 137 according to this comparative example, the support upper portion 137a of the left support member 137 has a non-bag-shaped cross-sectional structure that is open on the outside, and therefore has relatively low rigidity against an external force that falls outward. Here, the support lower portion 137c has a bag-shaped cross-sectional structure and is relatively rigid against the external force, and therefore the support upper portion 137a bends outward and deforms by ΔL relative to the support lower portion 137c.

[0030] In contrast, the upper support column 137a of the right support column member 137 has a non-bag-shaped cross-sectional structure that is open on the outside and not open on the inside, and therefore has a relatively high rigidity against an external force of inward collapse. Here, the lower support column 137c has a bag-shaped cross-sectional structure and is highly rigid like the lower support column 137c of the left support column member 137, and therefore both the upper support column 137a and the lower support column 137c have high rigidity, so the deformation amount ΔR due to inward collapse is smaller than the deformation amount ΔL on the left side. If the deformation amounts ΔL and ΔR on the left and right sides are different as shown in Figure 12 due to a torsional input that occurs during travel, the interval (distance) of the ropes hung on the platform 13 to secure the luggage 2 will vary as shown in Figure 10, and there is a risk that the fastening of the ropes will become loose.

[0031] However, according to the support members 137 of this embodiment, even if a twisting force is applied during travel, the deformation amounts ΔL and ΔR of the left and right support members 137 are equal, and the support members 137 twist to maintain the parallelogram, as shown in Fig. 11. Therefore, as shown in Fig. 10, the interval (distance) of the ropes hung on the platform 13 to secure the luggage 2 does not change, and there is no risk of the ropes being loosened.

[0032] As described above, according to the truck body 1 of this embodiment, the truck body 1 includes at least the floor panel 131, a pair of side panels 133, 134, a bolster 138 extending in the width direction x of the vehicle body 1 along the rear end edge of the floor panel 131, and a tailgate 135. At the rear ends of the side panels 133, 134 and at the left and right ends of the bolster 138, respectively, the support members 137, 137 are provided, which extend in the vertical direction of the vehicle body and are joined to the side panels 133, 134 and the bolster 138. The support member 137 includes a support upper portion 137a extending from the bolster 138 to the upper side of the vehicle body 1 and a support lower portion 137c extending from the bolster 138 to the lower side of the vehicle body 1, and the horizontal cross sections of the support upper portion 137a and the support lower portion 137c are of a partially open non-bag-shaped cross-sectional structure, and are horizontal cross-sectional structures in which one complements the other.

[0033] More specifically, according to the truck body 1 of this embodiment, one of the horizontal cross sections of the upper pillar 137a and the lower pillar 137c has a non-bag-shaped cross-sectional structure that is open on the outside in the width direction x of the body 1, and the other horizontal cross section of the upper pillar 137a and the lower pillar 137c has a non-bag-shaped cross-sectional structure that is open on the inside in the width direction x of the body 1.

[0034] Even more specifically, according to the truck body 1 of this embodiment, the horizontal cross section of the pillar upper part 137a has a cross-sectional structure that is open on the outside in the width direction x of the body 1, and the horizontal cross section of the pillar lower part 137c has a cross-sectional structure that is open on the inside in the width direction x of the body 1, and the rear combination lamp 15 is attached in the space outside the width direction x of the body 1 of the open cross-sectional structure of the pillar upper part 137a.

[0035] In the truck body 1 of this embodiment, the upper support column 137a of the support column member 137 has a non-bag-shaped cross-sectional structure with a partially open horizontal cross section, so that the rigidity of the upper support column column 137a of the left support column member 137 when it falls outward is different from the rigidity of the upper support column column 137a of the right support column member 137 when it falls inward. However, the lower support column column 137c of the support column member 137 has a non-bag-shaped cross-sectional structure that complements the upper support column column 137a, so that if the rigidity of the upper support column column 137a when it falls outward is small, the rigidity of the lower support column column 137c when it falls inward is large. Therefore, when the torsion mode is input to the vehicle body 1 and the vehicle body 1 repeatedly falls inward and outward, the rigidity difference between the left and right support column members 137 becomes zero or approximately zero. As a result, as shown in FIG. 10, the lashing of the rope 3 hung on the loading platform 13 to secure the luggage 2 can be suppressed from loosening.

[0036] Furthermore, according to the truck body 1 of this embodiment, a diagonal brace member 139 that connects the lower support pillar 137c and the bolster 138 is provided on the inside of the lower support pillar 137c in the width direction x of the vehicle body 1 having an open cross-sectional structure. This further increases the rigidity of the structure at the rear end of the bed 13 that is composed of the pair of support pillar members 137, the bolster 138, and the diagonal brace member 139. This increases the freedom of design of the truck, for example by equipping the rear end of the side panels 133, 134 with rear combination lamps 15 and other fittings. [Explanation of symbols]

[0037] 1. Truck body 11…Engine room 12. Cabin 13…Cargo platform 131…Floor panel 132…Front end panel 133…Side panel 134…Side panel 135…Tailgate 136…hinge 137...Support member 137a…upper part of the pillar 137b…Outer upper part of support 137c…lower pillar 137d…Reinforcement 138…Bolster 139...Brace member 14...Suspension structure 15...Rear combination lamp 2. Luggage 3. Rope

Claims

1. A truck body having a cargo bed including at least a floor panel, a pair of side panels, a bolster extending in the width direction of the vehicle body along a rear end edge portion of the floor panel, and a tailgate, a support member is provided at each of the rear end portions of the side panels, which are at the left end portion and the right end portion of the bolster, the support member extending in the up-down direction of the vehicle body and joining the side panels and the bolster; the support member includes a support upper portion extending from the bolster to an upper side of the vehicle body, and a support lower portion extending from the bolster to a lower side of the vehicle body, one of the pillar upper portion and the pillar lower portion has a horizontal cross section having a surface along the front-rear direction of the vehicle body and a surface along the width direction of the vehicle body, and has a non-bag-shaped cross section structure with an open outer side in the width direction of the vehicle body; The other of the upper pillar and the lower pillar has a horizontal cross-section having a surface that runs along the fore-and-aft direction of the vehicle body and a surface that runs along the width direction of the vehicle body, and the inside of the vehicle body in the width direction has a non-bag-shaped cross-sectional structure that is open.

2. The horizontal cross section of the upper part of the support pillar has a cross-sectional structure in which the outer side in the width direction of the vehicle body is open, and the horizontal cross section of the lower part of the support pillar has a cross-sectional structure in which the inner side in the width direction of the vehicle body is open, 2. The truck body according to claim 1, wherein a rear combination lamp is attached to a space on the outer side of the upper part of the support pillar in the width direction of the body having an open cross-sectional structure.

3. 3. The truck body according to claim 1, wherein a brace member connecting the lower part of the pillar and the bolster is provided on the inside in the width direction of the vehicle body having an open cross-sectional structure of the lower part of the pillar.

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