Vehicle body structure

Abstract

Provided is a vehicle body structure that can absorb impact loads and achieve good load transfer performance even when a central tunnel extending in the vehicle longitudinal direction is provided. The vehicle body structure includes a pair of side sills, a tunnel member extending in the vehicle longitudinal direction and provided between the pair of side sills, a central tunnel formed in the tunnel member and extending in the vehicle longitudinal direction, a cross member extending in the vehicle width direction and provided between either of the pair of side sills and the tunnel member, and a reinforcing member extending in the vehicle width direction and provided inside the tunnel member in the vehicle width direction and overlapping the cross member in the vehicle vertical direction.

Description

Technical Field

[0001] This invention relates to a vehicle body structure. Background Technology

[0002] In recent years, efforts to provide access to sustainable transportation systems that also take into account vulnerable groups such as the elderly, people with disabilities, and children among traffic participants have become increasingly active. To achieve this goal, research and development are being undertaken to further improve the safety and convenience of transportation through advancements related to collision safety performance.

[0003] In the prior art, Patent Document 1 provides a vehicle body lower structure that eliminates the need for a battery box to support the battery from below by placing the battery between a pair of side beams extending in the longitudinal direction and suspending and fixing the battery to the floor and crossbeams of the vehicle body lower structure. However, in Patent Document 1, the vehicle body lower structure absorbs collision loads through energy-absorbing members extending in the left-right direction on the cross-section of the side beams extending in the longitudinal direction, and absorbs collision energy by the collapse of the energy-absorbing members. However, in a structure where the crossbeams connect the pair of side beams in a straight line and are divided into left and right parts at the central passage, the crossbeams become shorter, resulting in a deterioration in load transfer efficiency due to the central passage. Therefore, how to effectively transfer the load during a collision remains an unsolved problem.

[0004] This project aims to address the aforementioned issues to improve collision safety performance. Furthermore, it contributes to the development of sustainable transportation systems.

[0005] [Existing technical documents]

[0006] [Patent Literature]

[0007] [Patent Document 1] Japanese Patent Publication No. 7339565 Summary of the Invention

[0008] The present invention provides a vehicle body structure that, even with a central passage extending along the length of the vehicle, can absorb impact loads and achieve good load transfer performance in the event of a side collision.

[0009] According to an embodiment of the present invention, a vehicle body structure includes: a pair of side beams; a channel member extending along the vehicle length direction, disposed between the pair of side beams, and the vehicle body structure forming a central channel extending along the vehicle length direction in the channel member; a crossbeam extending along the vehicle width direction, disposed between either of the pair of side beams and the channel member; and a reinforcing member extending along the vehicle width direction, disposed inside the channel member in the vehicle width direction, and at a position overlapping the crossbeam in the vehicle height direction.

[0010] In one embodiment of the present invention, each of the pair of side beams, the crossbeam, the channel member, and the reinforcing member is an extruded product, and the extrusion direction of each of the pair of side beams, the crossbeam, the channel member, and the reinforcing member is its extension direction.

[0011] In one embodiment of the present invention, the aforementioned pair of side beams extend along the length of the vehicle, and a power unit is provided between the pair of side beams, with the channel member disposed above the power unit.

[0012] In one embodiment of the present invention, the reinforcing member described above includes a reinforcing member compartment defined by the upper and lower surfaces of the reinforcing member extending along the vehicle width direction; the crossbeam includes a crossbeam compartment defined by a rib in the crossbeam and either the upper or lower surface of the crossbeam extending along the vehicle width direction; the passage member includes a passage member compartment defined by a rib in the passage member; and the reinforcing member compartment, the crossbeam compartment, and the passage member compartment are aligned in the vehicle height direction.

[0013] In one embodiment of the present invention, the aforementioned channel member has a body portion and an inner protrusion portion. The inner protrusion portion protrudes inward in the vehicle width direction of the channel member and is integrally disposed with the body portion of the channel member. The vehicle body structure is further provided with an inner connecting portion, which is disposed on the inner protrusion portion of the channel member and connected to the reinforcing member.

[0014] In one embodiment of the present invention, a mounting hole is provided at the contact portion between the inner protrusion of the channel member and the reinforcing member, and the inner connecting portion fastens the inner protrusion of the channel member and the reinforcing member in the vehicle height direction through the mounting hole with fasteners.

[0015] In one embodiment of the present invention, the aforementioned channel member has a body portion and an outer protrusion portion, the outer protrusion portion protruding toward the crossbeam and integrally disposed with the body portion of the channel member, and the vehicle body structure is further provided with an outer connecting portion, the outer connecting portion being disposed on the outer protrusion portion and connected to the crossbeam.

[0016] In one embodiment of the invention, when viewed from the side, the upper surface of the aforementioned beam has a forward-extending and downward-sloping front slope.

[0017] In one embodiment of the invention, when viewed from the side, the aforementioned crossbeam has a rear slope in a region further rearward than the front slope in the vehicle length direction, the rear slope extending rearward and tilting downward.

[0018] In one embodiment of the present invention, the crossbeam has a dimension in the vehicle length direction that is greater than its dimension in the vehicle height direction, and the reinforcing member has a length in the vehicle length direction that corresponds at least to the dimension of the crossbeam in the vehicle length direction.

[0019] In one embodiment of the present invention, the crossbeam has a plurality of ribs connecting the upper and lower surfaces of the crossbeam, and the reinforcing member has a plurality of ribs connecting the upper and lower surfaces of the reinforcing member. At least one of the plurality of ribs of the crossbeam and at least one of the ribs of the reinforcing member are disposed at the same position in the vehicle length direction.

[0020] Based on the above, in the embodiments of the present invention, the vehicle body structure is positioned with crossbeams and reinforcing members overlapping in the vehicle height direction. The crossbeams and reinforcing members are each formed by extrusion molding along the vehicle width direction. Therefore, loads can be transferred without deformation of the cross-sections of the crossbeams and reinforcing members, forming a load path with good load transfer efficiency. This allows for better load transfer within the internal area of ​​the vehicle body structure, thereby protecting the power unit installed between the side beams. Thus, even if the passageway members of the vehicle body structure form a central passageway extending along the vehicle length direction, they are not as easily flattened and deformed by lateral loads as the side beams. Instead, they can absorb impact loads during side collisions and, through the load transfer path formed by the reinforcing members, crossbeams, and passageway members, better transfer loads within the internal area of ​​the vehicle body structure, thereby suppressing deformation caused by loads during side collisions.

[0021] To make the above features and advantages of the present invention more apparent and understandable, specific embodiments are described below in conjunction with the accompanying drawings. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of a vehicle body structure according to an embodiment of the present invention;

[0023] Figure 2 yes Figure 1 The diagram shows a cross-sectional view of the vehicle body structure along line AA.

[0024] Figure 3A yes Figure 2 The diagram shows a partially enlarged view of the vehicle body structure.

[0025] Figure 3B This is a partially enlarged schematic diagram of a vehicle body structure according to another embodiment of the present invention;

[0026] Figure 4 yes Figure 1 The diagram shows a cross-sectional view of the vehicle body structure along line BB.

[0027] Figure 5 yes Figure 1 The diagram shows a cross-sectional view of the vehicle body structure with seats installed.

[0028] Figure 6 yes Figure 1 The diagram shows a cross-sectional view of the vehicle body structure along line CC.

[0029] Explanation of reference numerals in the attached figures:

[0030] 100: Vehicle body structure

[0031] 110: Side beam

[0032] 120: Crossbeam

[0033] 120R1: First rib

[0034] 120R2: Second rib

[0035] 130, 130A: Channel components

[0036] 130R: Rib

[0037] 131: Ontology Department

[0038] 132, 132A: Inner protrusion

[0039] 133, 133A: Lateral protrusions

[0040] 140: Reinforcing Component

[0041] 140R: Ribs

[0042] BTS: Rear Slope

[0043] FTS: front bevel

[0044] CP1: Inner connecting part

[0045] CP2: Outer connecting part

[0046] CT scan: Central passage

[0047] FH1, FH2: Mounting holes

[0048] FX1, FX2: Fasteners

[0049] IPU: Power Unit

[0050] R1: Reinforced component compartment

[0051] R2: Beam compartment

[0052] R3: Channel component compartment. Detailed Implementation

[0053] Reference will now be made in detail to exemplary embodiments of the invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same element references are used in the drawings and description to denote the same or similar parts.

[0054] Figure 1 This is a schematic diagram of a vehicle body structure according to an embodiment of the present invention; Figure 2 yes Figure 1 The diagram shows a cross-sectional view of the vehicle body structure along line AA. Figure 3A yes Figure 2 The diagram shows a partially enlarged view of the vehicle body structure. Figure 3B This is a partially enlarged schematic diagram of a vehicle body structure according to another embodiment of the present invention; Figure 4 yes Figure 1 The diagram shows a cross-sectional view of the vehicle body structure along line BB. Figure 5 yes Figure 1 The diagram shows a cross-sectional view of the vehicle body structure with seats installed. Figure 6 yes Figure 1 The diagram shows a cross-sectional view of the vehicle body structure along line CC. It should be noted that, for convenience, the front-to-back, left-to-right, and up-down directions of the vehicle are defined as shown in the diagram. The composition of each part will be explained according to these definitions, and the front-to-back, left-to-right, and up-down directions correspond to the vehicle length, width, and height directions, respectively.

[0055] Please refer to Figure 1 and Figure 2 In this embodiment, the vehicle body structure 100 includes a pair of side beams 110, a crossbeam 120, a passage component 130, a reinforcing component 140, and a power unit (IPU). Figure 1 As shown, a pair of side beams 110 and a passage member 130 extend along the vehicle length direction, with the passage member 130 disposed between the pair of side beams 110. The body structure 100 forms a central passage CT extending along the vehicle length direction within the passage member 130. A crossbeam 120 extends along the vehicle width direction and is disposed between either of the pair of side beams 110 and the passage member 130. A reinforcing member 140 extends along the vehicle width direction, and as shown... Figure 2 As shown, the reinforcing member 140 is disposed inside the passage member 130 in the vehicle width direction and at a position overlapping with the crossbeam 120 in the vehicle height direction. Furthermore, as... Figure 1 and Figure 2 As shown, the power unit IPU is disposed between a pair of side beams 110, and the channel member 130 is disposed above the power unit IPU. Specifically, in this embodiment, the side beams 110, the crossbeams 120, the channel member 130, and the reinforcing member 140 are all extruded products with high rigidity, and the extrusion direction of each member is its extension direction.

[0056] Thus, by adjusting the extrusion direction (i.e. the extension direction of each component) of the side beam 110, cross beam 120, channel member 130 and reinforcing member 140 arranged sequentially from the outside of the vehicle inward, the cross beam 120 and the reinforcing member 140 extend along the vehicle width direction, while the channel member 130 arranged between the cross beam 120 and the reinforcing member 140 extends along the vehicle length direction. This enables even a vehicle body structure with a central channel CT to absorb impact loads and transfer loads during a side collision. More specifically, in this embodiment, when a side impact load is input to the vehicle body structure 100, the side beam 110, which is located on the outermost side, extends along the length of the vehicle. The cross section of the side beam 110 collapses and absorbs the impact load. In this way, the impact load can be absorbed by efficiently crushing the side beam 110. Furthermore, since the cross beam 120 and the reinforcing member 140 are in an overlapping position in the height direction of the vehicle, and the cross beam 120 and the reinforcing member 140 are each formed by extrusion molding along the width direction of the vehicle, the load can be transferred without deformation of the cross sections of the cross beam 120 and the reinforcing member 140, thus forming a load path with good load transfer efficiency. This allows for better load transfer in the internal area of ​​the vehicle body structure 100, thereby protecting the power unit IPU installed between the side beams 110.

[0057] The following will be paired Figures 3A to 6 The detailed structure of each component in the vehicle body structure 100 will be explained in more detail.

[0058] like Figure 3A and Figure 4 As shown, in this embodiment, the crossbeam 120 has a first rib 120R1 for dividing the crossbeam compartment R2 and a plurality of second ribs 120R2 connecting the upper surface S121 and the lower surface S122 of the crossbeam 120. The first rib 120R1 extends along the vehicle length and width directions, and the second ribs 120R2 extend along the vehicle height direction. That is, as... Figure 3A and Figure 4 As shown, the ribs provided in the crossbeam 120 can be a combination of shapes having a shape extending along the vehicle length direction and the vehicle width direction and a shape having a shape extending along the vehicle height direction.

[0059] Furthermore, in this embodiment, the crossbeam 120 includes a crossbeam compartment R2 defined by a first rib 120R1 in the crossbeam 120 and either the upper surface S121 or the lower surface S122 of the crossbeam 120 extending along the vehicle width direction. Specifically, as Figure 3AAs shown, in this embodiment, the beam compartment R2 refers to the compartment area divided by the first rib 120R1 and the upper surface S121 of the beam 120. However, the present invention is not limited thereto. In other embodiments not shown, the beam compartment R2 may also be a compartment area divided by the first rib 120R1 and the lower surface of the beam 120, or a compartment area divided by the upper surface S121 and the lower surface S122 of the beam 120. On the other hand, as... Figure 3A As shown, in this embodiment, the reinforcing member 140 includes a reinforcing member compartment R1 defined by its upper surface S141 and lower surface S142 extending along the vehicle width direction, and the channel member 130 includes a channel member compartment R3 defined by its ribs 130R. Further, as... Figure 3A As shown, in this embodiment, the reinforcing component compartment R1, the crossbeam compartment R2, and the passage component compartment R3 are aligned in the vehicle height direction.

[0060] Thus, by ensuring that the heights of the reinforcing member compartment R1, the crossbeam compartment R2, and the passage member compartment R3 within the cross-section formed during extrusion molding are consistent in the vehicle height direction, the upper surface S141 or lower surface S142 of the reinforcing member 140, the upper surface S121 or lower surface S122 of the crossbeam 120, the first rib 120R1 in the crossbeam 120, or the rib 130R in the passage member 130 can be used as load transfer paths. In this way, the vehicle body structure 100 can form a load path with good load transfer efficiency through the arrangement of the reinforcing member compartment R1, the crossbeam compartment R2, and the passage member compartment R3. Therefore, even if the passage member 130 of the vehicle body structure 100 forms a central passage CT and extends along the length of the vehicle, it will not be as easily flattened and deformed by lateral loads as the side beam 110. Instead, it can absorb the impact load during a side collision and transfer the load through the load transfer path formed by the reinforcement member compartment R1, the crossbeam compartment R2 and the passage member compartment R3, thereby better transferring the load in the internal area of ​​the vehicle body structure 100 and suppressing the deformation caused by the load during a side collision.

[0061] On the other hand, such as Figure 6 As shown, the reinforcing member 140 has a plurality of ribs 140R that connect the upper surface S141 and the lower surface S142 of the reinforcing member 140. Also, please refer to... Figure 4 and Figure 6In this embodiment, at least one of the plurality of second ribs 120R2 of the crossbeam 120 and at least one of the ribs 140R of the reinforcing member 140 are positioned at the same location in the vehicle length direction. Thus, by aligning at least one of the second ribs 120R2 of the crossbeam 120 and at least one of the ribs 140R of the reinforcing member 140 in the vehicle length direction, the second ribs 120R2 of the crossbeam 120 and the ribs 140R of the reinforcing member 140 can form at least one load path with good load transfer efficiency. In this way, the ribs formed in the crossbeam 120, whether extending horizontally (i.e., the first rib 120R1 extending in the vehicle length and width directions to divide the crossbeam compartment R2) or vertically (i.e., the second rib 120R2 extending in the vehicle height direction to connect the upper surface S121 and the lower surface S122 of the crossbeam 120), can form a load path with good load transfer efficiency by aligning with the various parts of the reinforcing member 140, and effectively improve the efficiency of collision load transfer.

[0062] Next, please refer to [the document / reference] again. Figure 3A In this embodiment, the passage component 130 has a body portion 131, an inner protrusion 132, and an outer protrusion 133, wherein both the inner protrusion 132 and the outer protrusion 133 extend along the direction of the central passage CT. The inner protrusion 132 protrudes inward in the vehicle width direction of the passage component 130, while the outer protrusion 133 protrudes towards the crossbeam 120, and both the inner protrusion 132 and the outer protrusion 133 are integrally formed with the body portion 131 of the passage component 130. The vehicle body structure 100 also has an inner connecting portion CP1 and an outer connecting portion CP2. The inner connecting portion CP1 is disposed on the inner protrusion 132 and connected to the reinforcing member 140. The outer connecting portion CP2 is disposed on the outer protrusion 133 and connected to the crossbeam 120.

[0063] More specifically, such as Figure 3A As shown, in this embodiment, a mounting hole FH1 is provided at the contact point between the inner protrusion 132 of the channel member 130 and the reinforcing member 140. The inner connecting part CP1 secures the inner protrusion 132 of the channel member 130 and the reinforcing member 140 in the vehicle height direction through the mounting hole FH1 using a fastener FX1. Furthermore, the contact point between the inner protrusion 132 and the reinforcing member 140 can be the top or bottom of the inner protrusion 132 and the bottom or top of the reinforcing member 140, for example, as... Figure 3AAs shown, in this embodiment, since the inner protrusion 132 is located above the reinforcing member 140, the bottom of the inner protrusion 132 contacts the top of the reinforcing member 140 to form a mounting hole FH1. The inner connecting part CP1 secures the inner protrusion 132 of the channel member 130 to the reinforcing member 140 in the vehicle height direction through the mounting hole FH1 using a fastener FX1. However, the present invention is not limited thereto. Figure 3B As shown, in another embodiment, the inner protrusion 132A of the channel member 130A can also be disposed below the reinforcing member 140. Therefore, the top of the inner protrusion 132A contacts the bottom of the reinforcing member 140 to form a mounting hole FH1. The inner connecting part CP1 can also be fastened to the inner protrusion 132A of the channel member 130A and the reinforcing member 140 in the vehicle height direction through the mounting hole FH1 using fasteners FX1. Those skilled in the art can design the position of the mounting hole FH1 according to the relative configuration between the inner protrusions 132, 132A and the reinforcing member 140, as long as the inner connecting part CP1 can be fastened to the inner protrusions 132, 132A of the channel member 130, 130A and the reinforcing member 140 in the vehicle height direction using fasteners FX1.

[0064] Thus, by integrally providing inner protrusions 132 and 132A on the channel members 130 and 130A protruding in the direction of the central channel CT (i.e., the inner side of the channel members 130 and 130A in the vehicle width direction), it is not necessary to provide separate mounting components such as brackets. The structure of fastening the reinforcing member 140 to the inner protrusions 132 and 132A of the channel members 130 and 130A can be achieved through the mounting hole FH1 that passes through the reinforcing member 140 in the vehicle height direction. Furthermore, by connecting the reinforcing member 140 to the inner protrusions 132 and 132A of the channel members 130 and 130A, the load input to the channel members 130 and 130A can also be appropriately transferred from the channel member 130 to the reinforcing member 140.

[0065] On the other hand, similarly, the contact points between the outer protrusions 133, 133A of the channel members 130, 130A and the crossbeam 120 can also be provided with mounting holes FH2, and the outer connecting part CP2 can also be fastened to the outer protrusions 133, 133A of the channel members 130, 130A and the crossbeam 120 in the vehicle height direction through the mounting holes FH2 using fasteners FX2. Specifically, as Figure 3A and Figure 3BAs shown, the outer protrusions 133 and 133A can also be selectively provided on the upper surface S121 or the lower surface S122 of the crossbeam 120. The position of the mounting hole FH2 can be designed according to the relative configuration between the outer protrusions 133 and 133A and the crossbeam 120, as long as the outer connecting part CP2 can be fastened to the outer protrusions 133 and 133A of the channel members 130 and 130A and the crossbeam 120 in the vehicle height direction by fasteners FX2. In this way, by integrally providing the outer protrusions 133 and 133A protruding towards the crossbeam 120 on the channel members 130 and 130A, it is not necessary to provide separate mounting components such as brackets. The structure of fastening the crossbeam 120 to the outer protrusions 133 and 133A of the channel members 130 and 130A can be achieved by providing the mounting hole FH2 through the crossbeam 120 in the vehicle height direction. Furthermore, by connecting the crossbeam 120 to the outer protrusions 133, 133A of the channel members 130, 130A, the load between the channel members 130, 130A and the crossbeam 120 can also be properly transferred.

[0066] In addition, such as Figure 4 and Figure 5 As shown, in this embodiment, when viewed from the side, the upper surface S121 of the crossbeam 120 has a forward-extending and downward-sloping front slope FTS, and a rear slope BTS in a region further rearward than the front slope FTS in the vehicle length direction, the rear slope BTS extending rearward and sloping downward. Specifically, since the crossbeam 120 is formed by extrusion molding, it can be made into any shape according to its application. Furthermore, as... Figure 4 and Figure 5 As shown, by forming a front bevel (FTS) on the crossbeam 120, the protrusions at the corners of the crossbeam 120 can be reduced, making it closer to a flat surface. Thus, as... Figure 5 As shown, when the driver's foot moves, the heel is less likely to be caught on the crossbeam 120, thus improving the driver's comfort in placing or moving their feet. On the other hand, as... Figure 5 As shown, a mounting part FP for mounting the seat ST or seat bracket SB can be provided on the rear inclined surface BTS of the crossbeam 120. Furthermore, by providing the rear inclined surface BTS, the rear part of the crossbeam 120 will not interfere with the sliding of the seat on the seat guide rail, which is conducive to the configuration and assembly of other parts of the vehicle body.

[0067] In addition, such as Figure 5 and Figure 6As shown, in this embodiment, the crossbeam 120 has a length L120 in the vehicle length direction that is greater than its length in the vehicle height direction, and the reinforcing member 140 has a length L140 in the vehicle length direction that corresponds at least to the length of the crossbeam 120 in the vehicle length direction. That is, in this embodiment, the length L140 of the reinforcing member 140 in the vehicle length direction is equal to or greater than the length L120 of the crossbeam 120 in the vehicle length direction. This allows the load input during a side collision to be easily transferred from one side of the crossbeam 120 to the other side of the crossbeam 120 via the reinforcing member 140.

[0068] In summary, in the embodiments of the present invention, the vehicle body structure is formed by overlapping crossbeams and reinforcing members in the vehicle height direction. The crossbeams and reinforcing members are each formed by extrusion molding along the vehicle width direction. Therefore, loads can be transferred without deformation of the cross-sections of the crossbeams and reinforcing members, forming a load path with good load transfer efficiency. This allows for better load transfer within the internal area of ​​the vehicle body structure, thereby protecting the power unit installed between the side beams. Thus, even if the passageway members of the vehicle body structure form a central passageway extending along the vehicle length direction, they are not as easily flattened and deformed by lateral loads as the side beams. Instead, they can absorb impact loads during side collisions and, through the load transfer path formed by the reinforcing members, crossbeams, and passageway members, better transfer loads within the internal area of ​​the vehicle body structure, thereby suppressing deformation caused by loads during side collisions.

[0069] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A vehicle body structure, characterized in that, include: A pair of side beams; as well as A passage component extending along the vehicle length direction is disposed between the pair of side beams, and the vehicle body structure forms a central passage extending along the vehicle length direction in the passage component. A crossbeam extending in the vehicle width direction and disposed between either of the pair of side beams and the passage member; as well as A reinforcing member extending along the vehicle width direction is disposed inside the passage member in the vehicle width direction and at a position overlapping the crossbeam in the vehicle height direction.

2. The vehicle body structure according to claim 1, characterized in that, Each of the pair of side beams, the crossbeam, the channel member, and the reinforcing member is an extruded product, and the extrusion direction of each of the pair of side beams, the crossbeam, the channel member, and the reinforcing member is its extension direction.

3. The vehicle body structure according to claim 2, characterized in that, The pair of side beams extend along the length of the vehicle, and a power unit is provided between the pair of side beams. The channel component is located above the power unit.

4. The vehicle body structure according to claim 2, characterized in that, The reinforcing member includes reinforcing member compartments defined by the upper and lower surfaces of the reinforcing member extending along the vehicle width direction. The crossbeam includes crossbeam compartments defined by ribs in the crossbeam and either the upper or lower surface of the crossbeam extending in the vehicle width direction. The channel component includes channel component compartments defined by ribs in the channel component. The reinforcing member compartment, the crossbeam compartment, and the passageway component compartment are aligned in the vehicle height direction.

5. The vehicle body structure according to claim 2, characterized in that, The channel component has a body portion and an inner protrusion portion. The inner protrusion portion protrudes inward in the vehicle width direction of the channel component and is integrally formed with the body portion of the channel component. Furthermore, the vehicle body structure is also provided with an inner connecting part, which is disposed on the inner protrusion of the channel member and connected to the reinforcing member.

6. The vehicle body structure according to claim 5, characterized in that, A mounting hole is provided at the contact point between the inner protrusion of the channel member and the reinforcing member. The inner connecting part secures the inner protrusion of the channel member and the reinforcing member in the vehicle height direction through the mounting hole using fasteners.

7. The vehicle body structure according to claim 2, characterized in that, The channel component has a main body and an outer protrusion, the outer protrusion protruding toward the crossbeam and integrally formed with the main body of the channel component. Furthermore, the vehicle body structure is also provided with an outer connecting part, which is disposed on the outer protrusion and connected to the crossbeam.

8. The vehicle body structure according to claim 2, characterized in that, When viewed from the side, the upper surface of the beam has a forward-extending and downward-sloping front slope.

9. The vehicle body structure according to claim 8, characterized in that, When viewed from the side, the crossbeam has a rear ramp in the region further rearward than the front ramp in the length direction of the vehicle, and the rear ramp extends rearward and slopes downward.

10. The vehicle body structure according to claim 2, characterized in that, The crossbeam has a dimension in the vehicle length direction that is greater than its dimension in the vehicle height direction, and the reinforcing member has a length in the vehicle length direction that corresponds at least to the dimension of the crossbeam in the vehicle length direction.

11. The vehicle body structure according to claim 2, characterized in that, The crossbeam has a plurality of ribs connecting the upper and lower surfaces of the crossbeam, and the reinforcing member has a plurality of ribs connecting the upper and lower surfaces of the reinforcing member. At least one of the plurality of ribs of the crossbeam and at least one of the ribs of the reinforcing member are located at the same position in the vehicle length direction.

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