CN221049813U - Vehicle body structure and vehicle - Google Patents

Abstract

The utility model provides a vehicle body structure and a vehicle. The vehicle body structure of the utility model comprises a floor and an upper assembly arranged on the floor; the floor and the upper assembly are processed by adopting an extrusion molding process, and the two sides of the bottom of the upper assembly are respectively connected with the left side and the right side of the floor so as to enclose a driving space. According to the vehicle body structure, the floor and the upper assembly of the vehicle body are processed by adopting an extrusion molding process, so that the number of parts of the vehicle body can be greatly reduced; in addition, the floor and the upper assembly are integrally formed, so that a large amount of welding and assembling operation workload can be saved, and a vehicle body design scheme beneficial to reducing the manufacturing cost of the vehicle body is provided.

Description

Vehicle body structure and vehicle

Technical Field

The utility model relates to the technical field of automobile manufacturing, in particular to a vehicle body structure. In addition, the utility model also relates to a vehicle.

Background

The traditional car body is formed by welding metal plates, the number of parts is large, the number of the parts is usually more than 500, each part needs to be assembled and welded, the working procedure is complicated, the production working procedure is long, the occupied production field is large, and the processing equipment is large; therefore, the conventional car body manufacturing scheme has certain disadvantages in terms of equipment cost, part production cost, site cost, personnel cost and the like.

In order to reduce the comprehensive cost of vehicle body manufacture, particularly in the fields of low-end vehicle models, small vehicle models and the like, development of a vehicle body design scheme with low cost, fewer assembly procedures and high production efficiency is urgently needed to meet the low-cost manufacturing requirement of vehicle body manufacture.

Disclosure of utility model

In view of this, the present utility model aims to propose a vehicle body structure to provide a vehicle body design that facilitates a reduction in the manufacturing cost of the vehicle body.

In order to achieve the above purpose, the technical scheme of the utility model is realized as follows:

A vehicle body structure comprising a floor, and an upper assembly disposed on the floor; the floor and the upper assembly are processed by adopting an extrusion molding process, and the two sides of the bottom of the upper assembly are respectively connected with the left side and the right side of the floor so as to enclose a driving space.

Further, the upper assembly comprises a left side wall and a right side wall which are arranged in bilateral symmetry, the left side wall and the top of the right side wall are connected together, the bottom of the left side wall is connected with the left side of the floor, and the bottom of the right side wall is connected with the right side of the floor.

Further, the floor, the left side wall and the right side wall are all extruded along the front-back direction of the vehicle, and all the floor, the left side wall and the right side wall are connected by joggle joint structures arranged along the front-back direction.

Further, the floor and the upper assembly all adopt bilayer structure, be formed with hollow first intermediate layer between the two-layer wallboard of floor, be formed with hollow second intermediate layer between the two-layer wallboard of upper assembly, just first intermediate layer with a plurality of strengthening ribs have all been arranged in the second intermediate layer.

Further, each reinforcing rib in the first interlayer and the second interlayer is connected end to end, and two adjacent reinforcing ribs and the corresponding wall plate jointly enclose a cavity with a triangular cross section.

Further, the second interlayer comprises a top cover region located at the top of the vehicle body and a side wall region located at the side part of the vehicle body, and the arrangement density of the reinforcing ribs in the side wall region is greater than that in the top cover region.

Further, the front wall and the rear wall are formed by extrusion in the left-right direction of the vehicle, the front wall is covered on the front ends of the upper assembly and the floor, and the rear wall is covered on the rear ends of the upper assembly and the floor.

Further, the front wall and the rear wall are both in double-layer structures, a hollow third interlayer is formed between two layers of wall boards of the front wall, and a hollow fourth interlayer is formed between two layers of wall boards of the rear wall; the third interlayer and the fourth interlayer are internally provided with a plurality of reinforcing ribs, and the arrangement density of the reinforcing ribs in the lower area is greater than that in the upper area in the third interlayer and the fourth interlayer.

Further, a front windshield window is arranged on the front wall, and a front windshield frame for installing the front windshield glass is arranged in the front windshield window; the front windshield frame is fixedly arranged in the front windshield window by adopting a hot melting self-tapping screw-connection process.

Compared with the prior art, the utility model has the following advantages:

according to the vehicle body structure, the floor and the upper assembly of the vehicle body are processed by adopting an extrusion molding process, so that the number of parts of the vehicle body can be greatly reduced; in addition, the floor and the upper assembly are integrally formed, so that a large amount of welding and assembling operation workload can be saved, and a vehicle body design scheme beneficial to reducing the manufacturing cost of the vehicle body is provided.

In addition, the floor, the left side wall and the right side wall are extruded and formed in the front-back direction of the vehicle, are suitable for the shape characteristics of the vehicle body, and are convenient for processing and forming. When extrusion molding, the joggle structure is processed at the side edge parts of the floor, the left side wall and the right side wall, the floor, the left side wall and the right side wall can be assembled into a whole in a plug-in mounting mode, the number of assembly accessories and assembly operation steps are reduced, and the connecting firmness is good.

Another object of the present utility model is to propose a vehicle employing the body structure according to the present utility model. The vehicle of the present utility model has the technical advantages of the vehicle body structure described above.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model, wherein the words of front and back, top and bottom, etc. are used to indicate relative position and are not intended to limit the utility model unduly. In the drawings:

FIG. 1 is a schematic view showing the overall structure of a vehicle body structure according to an embodiment of the present utility model;

FIG. 2 is a schematic view of the overall structure of a vehicle body structure according to an embodiment of the present utility model from another perspective;

FIG. 3 is a top view of a vehicle body structure according to an embodiment of the present utility model;

FIG. 4 is a schematic cross-sectional view of the portion A-A shown in FIG. 3;

FIG. 5 is a schematic cross-sectional view of the portion B-B in FIG. 3;

FIG. 6 is an exploded view of a front wall according to an embodiment of the present utility model;

fig. 7 is a graph of a simulated top pressure condition according to a second embodiment of the utility model.

Reference numerals illustrate:

10. A floor; 11. an upper assembly; 111. left side wall; 112. a right side wall; 12. a side window; 13. a side window frame; 15. a joggle structure;

2. A front wall; 20. a front windshield window; 21. a front windshield frame; 22. a front windshield; 23. a front wall connecting frame;

3. A rear wall; 30. a rear window; 31. a rear window frame; 33. a door lock structure;

4. reinforcing ribs; 400. a top cover region; 401. a side wall region; 41. a first interlayer; 43. a third interlayer; 44. and a fourth interlayer.

Detailed Description

It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other.

In the description of the present utility model, it should be noted that, if terms indicating an orientation or positional relationship such as "upper, lower, left, right, front, rear, inner, outer" or the like are used, they are based on the orientation or positional relationship shown in the drawings, only for convenience of describing the present utility model, and do not indicate or imply that the apparatus or elements to be referred to must have a specific orientation, be constructed or operated in a specific orientation, and thus should not be construed as limiting the present utility model. In the vehicle described in the present utility model, the terms of the directions such as "up, down, left, right, front, and rear" used in the embodiments are defined with reference to the up-down direction (also referred to as the height direction), the left-right direction (also referred to as the width direction), and the front-rear direction (also referred to as the length direction) of the vehicle. In particular, as shown in the drawings, the X direction is the front-rear direction of the vehicle, wherein the side pointed by the arrow is the "front", and vice versa. The Y direction is the left-right direction of the vehicle, wherein the side pointed by the arrow is "left", and vice versa. The Z direction is the up-down direction of the vehicle, wherein the side pointed by the arrow is "up", and vice versa. The "inner and outer" are defined with reference to the contour of the corresponding component, for example, "inner" and "outer" are defined with reference to the contour of the vehicle, with "inner" being the side of the contour of the vehicle closer to the vehicle middle, and "outer" being the opposite.

Furthermore, in the description of the present utility model, the terms "mounted," "connected," and "connected," are to be construed broadly, unless otherwise specifically defined. For example, the connection may be a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intermediaries, or in communication with each other. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art in combination with specific cases. The terms first, second, third, fourth, etc. are used in the description of the present utility model only to distinguish between similar features at different locations, or uses, etc. for the purpose of avoiding ambiguity, confusion, and should not be construed as indicating or implying relative importance.

The utility model will be described in detail below with reference to the drawings in connection with embodiments.

Example 1

The embodiment relates to a vehicle body structure and provides a vehicle body design scheme which is beneficial to reducing the manufacturing cost of a vehicle body; an exemplary configuration of which is shown in fig. 1, 2 and 3.

In general, the vehicle body structure includes a floor 10, and an upper assembly 11 provided on the floor 10. Wherein, the floor 10 and the upper assembly 11 are processed by extrusion molding process, and two sides of the bottom of the upper assembly 11 are respectively connected with the left and right sides of the floor 10, thereby enclosing a driving space.

The upper assembly 11 may be integrally formed by integral extrusion. However, in this embodiment, the upper assembly 11 includes left side walls 111 and right side walls 112 that are symmetrically disposed, and the top portions of the left side walls 111 and right side walls 112 are connected together to form the entire upper assembly 11; the bottom of the left side wall 111 is connected to the left side of the floor panel 10, and the bottom of the right side wall 112 is connected to the right side of the floor panel 10, so that the above three members enclose the riding space. The upper assembly 11 is designed into a left side wall 111 and a right side wall 112, which are convenient to be respectively processed and manufactured, and the tops of the left side wall 111 and the right side wall 112 are connected together, so that the upper assembly 11 in a shape of a Chinese character 'men' or an arch can be formed.

As shown in fig. 3 and 4, the floor panel 10, the left side wall 111 and the right side wall 112 of the present embodiment are all extruded in the front-rear direction of the vehicle, and all of them are connected by the mortise structure 15 arranged in the front-rear direction. The floor 10, the left side wall 111 and the right side wall 112 are extruded in the front-rear direction of the vehicle, are adapted to the shape characteristics of the vehicle body, and are convenient for processing and forming. While extrusion molding, the joggle joint structure 15 is processed at the side edge parts of the floor 10, the left side wall 111 and the right side wall 112, and the floor 10, the left side wall 111 and the right side wall 112 can be assembled into a whole in a plug-in mounting mode, so that the number of assembly accessories and assembly operation steps are reduced, and the connecting firmness is good. During assembly, the joggling direction is the X-direction assembly; first, a reference assembly is selected, if the left side wall 111 is taken as a reference, the left side wall 111 is set to be in a fixed state, the floor 10 and the right side wall 112 are respectively pushed in front and back through a joggle joint, and are fixedly connected through a joggle joint structure 15, so that the effect of fixing and assembling can be achieved without welding, screwing and other modes.

For the specific structural form of the joggle 15, there are of course a plurality of choices, and different shapes such as right angle tenons, dovetails, elliptical tenons, circular tenons, etc. can be adopted; for example, a dovetail-shaped tenon may be disposed on the top side of the right side wall 112, a dovetail-shaped mortise may be disposed on the top side of the left side wall 111, and the tenon may be inserted into the mortise along the vehicle X direction to connect the top of the left side wall 111 and the right side wall 112. Similarly, the connection between the bottom of the left side wall 111 and the left side edge of the floor board 10, and the connection between the bottom of the right side wall 112 and the right side edge of the floor board 10 can also adopt the tenon and mortise insertion type. Of course, the upper assembly 11 and the floor panel 10 should be fabricated from materials suitable for extrusion, in this embodiment, aluminum materials are preferred, and the body structure is an extruded aluminum structure, which is not only lightweight overall, but also meets the strength requirements of the body.

In addition, the floor 10 and the upper assembly 11 of the present embodiment each adopt a double-layer structure, a hollow first interlayer 41 is formed between two wall plates of the floor 10, and a hollow second interlayer is formed between two wall plates of the upper assembly 11. Further, a plurality of reinforcing ribs 4 are arranged in each of the first and second interlayers 41 and 4. Floor 10 and upper portion assembly 11 all adopt superstructure, through setting up a large amount of strengthening ribs 4 in the intermediate layer, not only can ensure the overall structural strength of automobile body, can effectively reduce the whole weight of automobile body moreover.

The specific arrangement manner of the reinforcing ribs 4 is of course numerous, and preferably, each reinforcing rib 4 in the first interlayer 41 and the second interlayer in this embodiment is connected end to end, and two adjacent reinforcing ribs 4 and the corresponding wall plate jointly enclose a cavity with a triangular cross section. Adjacent triangular cavity structures are arranged by utilizing the sandwich wall plates and the reinforcing ribs 4 in the sandwich wall plates, so that the supporting strength of the reinforcing ribs 4 can be effectively improved, and the structural strength of the floor 10 and the upper assembly 11 is further improved.

The second interlayer comprises a top cover area 400 positioned at the top of the vehicle body and a side wall area 401 positioned at the side part of the vehicle body, and the arrangement density of the reinforcing ribs 4 in the side wall area 401 is larger than that of the reinforcing ribs 4 in the top cover area 400. According to the different conditions of the structural strength requirements of different parts of the upper assembly 11, the reinforcing ribs 4 arranged in the second interlayer of the upper assembly 11 are distributed according to different densities according to the difference of the areas, so that the quantity of the distributed reinforcing ribs 4 is favorably saved, and the purpose of saving the consumption is achieved. It should be noted that the arrangement density of the reinforcing ribs 4 in the floor panel 10 may be set smaller based on the case where the strength requirement of the floor panel 10 is relatively low, and may be set with reference to the arrangement density of the reinforcing ribs 4 in the roof area 400.

The reinforcing ribs 4 adopt a triangular support mode, fully exert the characteristics of good triangular stability and difficult deformation, can obviously improve the rigidity performance and the support performance of the upper assembly 11 and the floor 10, are finally reflected on a vehicle body framework, and can show good light-weight effect.

Moreover, the arrangement density of the reinforcing ribs 4 is managed differently, and the structural reinforcing effect of the reinforcing ribs 4 can be exerted to the maximum extent by differently arranging the reinforcing ribs in different areas such as the floor 10, the top cover area 400 and the side wall area 401 of the upper assembly 11. Because the side wall part of the upper assembly 11 plays a role in supporting in the Z direction, and plays a role in key performance and needs stronger supporting capacity under the working conditions of side collision and jacking of the vehicle body, the reinforcing ribs 4 of the side wall area 401 in the left side wall 111 and the right side wall 112 are densely arranged, preferably, the distance between the connecting points of two adjacent reinforcing ribs 4 and the wallboard is controlled below 50mm, the material thickness of the reinforcing ribs 4 is set between 1.5mm and 2mm, and the material thickness can be reasonably determined according to the weight requirement condition of the vehicle body. The strength requirements of the top cover area 400 and the first interlayer 41 of the floor 10 are relatively low, the reinforcing ribs 4 therein can be arranged relatively sparsely, the thickness of the reinforcing ribs 4 is recommended to be 1.5mm, and the distance between the connecting points of two adjacent reinforcing ribs 4 and the wallboard is controlled to be more than 60 mm.

Of course, a front wall 2 and a rear wall 3 should be provided in the vehicle body structure, and the vehicle body structure of the present embodiment further includes the front wall 2 and the rear wall 3 extruded in the left-right direction of the vehicle as shown in fig. 3 and 5; wherein, the front wall 2 covers the front ends of the upper assembly 11 and the floor 10, and the rear wall 3 covers the rear ends of the upper assembly 11 and the floor 10. The front wall 2 and the rear wall 3 are processed by adopting an extrusion molding process, which is beneficial to further saving the number of parts of the vehicle body and reducing the welding assembly operation procedures, thereby further reducing the overall manufacturing cost of the vehicle body.

Similar to the setting of the upper assembly 11, in order to reduce the self weight of the front wall 2 and the rear wall 3 as much as possible and reduce the consumable amount on the premise of guaranteeing the structural strength requirements of the front wall 2 and the rear wall 3, the following setting mode is preferably adopted for the front wall 2 and the rear wall 3. The front wall 2 and the rear wall 3 are of double-layer structures, a hollow third interlayer 43 is formed between two layers of wall plates of the front wall 2, and a hollow fourth interlayer 44 is formed between two layers of wall plates of the rear wall 3; a plurality of reinforcing ribs 4 are arranged in each of the third interlayer 43 and the fourth interlayer 44, and the arrangement density of the reinforcing ribs 4 in the lower region is greater than the arrangement density of the reinforcing ribs 4 in the upper region in each of the third interlayer 43 and the fourth interlayer 44. Because the structures such as steering, windscreen wipers, various pedals and the like are required to be arranged on the lower part of the front wall 2 and the rear wall 3, and higher strength is required; the top is mainly connected and sealed effect, and the intensity requirement is lower, is suitable for lightweight design. Therefore, the arrangement of the reinforcing ribs 4 in the front wall 2 and the rear wall 3 adopts an arrangement mode with dense lower parts and sparse upper parts, is suitable for specific conditions of different areas, has close feeling relationship with NVH (Noise, vibration, harshness, noise, vibration and harshness) of drivers and passengers, and is beneficial to improving the strength and NVH performance of the vehicle body due to reasonable arrangement and differential concentration setting of the reinforcing ribs 4.

The mounting modes of the front wall 2 and the rear wall 3 can be flexibly selected. In this embodiment, the front wall 2 is fixedly mounted to the front ends of the upper assembly 11 and the floor 10 through a front wall connecting frame 23, and the front wall connecting frame 23 is preferably a punched aluminum member or a die-cast aluminum member and is fixedly connected to the upper assembly 11, the floor 10 and the front wall 2 through FDS (Flow DRILL SCREW, hot melt self-tapping screw process).

In addition, as shown in fig. 6, a front windshield 20 is provided on the front wall 2, and a front windshield frame 21 for mounting a front windshield 22 is provided in the front windshield 20; the front windshield frame 21 is fixedly mounted in the front windshield window 20 by adopting a hot melt self-tapping screw-connection process. Because the front wall 2 radian is large, the front windshield frame 21 recommends to adopt an aluminum alloy die-casting structural member, one end of the front windshield frame 21 is arranged on the front wall 2 and transits to the bottom surface through a drawing angle, the front windshield glass 22 is arranged on the bottom surface, and the front windshield glass 22 and the front windshield frame 21 are fixedly connected through colloid.

Of course, instead of the window on the front wall 2, several windows may be provided on the rear wall 3 and the upper assembly 11. In the present embodiment, a rear window 30 is provided on the rear wall 3, and a rear window frame 31 for mounting a rear window glass is provided in the rear window 30; a plurality of side windows 12 are provided on the side of the upper assembly 11, and a side window frame 13 for mounting side window glass is provided in each side window 12. Preferably, the rear window frame 31 and the side window frame 13 are also fixed into the corresponding windows by adopting a hot-melt self-tapping screw connection process, and the specific configuration mode can refer to the configuration condition of the front windshield frame 21 and the front windshield glass 22.

In addition, unlike the front wall 2, the rear wall 3 and the upper assembly 11 are preferably in an openable and closable form, the rear wall 3 is used as a tail gate, so that passengers can enter through the tail gate conveniently, the arrangement of a side door is omitted, the safety performance of a vehicle body and silence of the environment in the vehicle can be improved conveniently, one side of the rear wall 3 can be connected with the right side wall 112 through a hinge, and the other side of the rear wall 3 is locked on the left side wall 111 through a door lock structure 33.

In summary, in the vehicle body structure of the present embodiment, the floor 10 and the upper assembly 11 of the vehicle body are processed by adopting the extrusion molding process, so that the number of parts of the vehicle body can be greatly reduced; in addition, the floor 10 and the upper assembly 11 are integrally formed, so that a great amount of welding and assembling operation workload can be saved, and a vehicle body design scheme which is beneficial to reducing the manufacturing cost of the vehicle body is provided.

Example two

The present embodiment relates to a vehicle employing the vehicle body structure provided in the first embodiment.

By adopting the vehicle body structure, the number of parts can be reduced, the assembly efficiency can be improved, and the whole vehicle body structure also has good structural performance. In the test of bearing pressure on the top of the automobile body, the maximum extrusion force resistance of the automobile body of the integrated extruded aluminum is 86.1KN, and the target requirement of the strength-to-quality ratio of 4.0 is met under the condition that the preparation quality is less than or equal to 2194 KG. (6082-T6 has no static material and adopts high-speed material analysis), the middle position of the extruded aluminum car body is bent and deformed, no failure occurs, and the jacking requirement is met. FIG. 7 shows a graph of simulated roof pressure conditions under such vehicle body simulation modeling data.

In addition, when the vehicle is subjected to frontal, side and rear collisions, the vehicle body can transmit the collision force well to the chassis, and the chassis and the vehicle body can be connected in a threaded manner. Besides being configured as a structural member alone, the floor 10 may be integrated with the chassis frame, and after being assembled, the floor and the vehicle body together form a sealing structure, thereby saving the floor structure of the vehicle body framework and achieving the effect of light weight.

In the electric vehicle, the floor 10 can be omitted and replaced by a battery pack upper cover, the battery pack is assembled on the chassis frame, and the chassis frame and the upper assembly 11 form a sealing structure together after being assembled, so that a complete riding space is formed.

In summary, the vehicle of the embodiment is a highly integrated vehicle body structural design scheme, has good vehicle body rigidity performance, NVH performance and safety performance, and has a light weight effect.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.

Claims (10)

1. A vehicle body structure characterized in that:

Comprises a floor (10) and an upper assembly (11) arranged on the floor (10);

The floor (10) and the upper assembly (11) are processed by adopting an extrusion molding process, and the two sides of the bottom of the upper assembly (11) are respectively connected with the left side and the right side of the floor (10) so as to enclose a driving space.

2. The vehicle body structure according to claim 1, characterized in that:

The upper assembly (11) comprises a left side wall (111) and a right side wall (112) which are symmetrically arranged left and right, the left side wall (111) and the top of the right side wall (112) are connected together, the bottom of the left side wall (111) is connected with the left side of the floor (10), and the bottom of the right side wall (112) is connected with the right side of the floor (10).

3. The vehicle body structure according to claim 2, characterized in that:

The floor (10), the left side wall (111) and the right side wall (112) are all extruded along the front-back direction of the vehicle, and all the three are connected by adopting a joggle joint structure (15) arranged along the front-back direction.

4. The vehicle body structure according to claim 1, characterized in that:

The floor (10) and the upper assembly (11) are of double-layer structures, a hollow first interlayer (41) is formed between two layers of wall plates of the floor (10), a hollow second interlayer is formed between two layers of wall plates of the upper assembly (11), and a plurality of reinforcing ribs (4) are distributed in the first interlayer (41) and the second interlayer.

5. The vehicle body structure according to claim 4, characterized in that:

Each reinforcing rib (4) in the first interlayer (41) and the second interlayer are connected end to end, and two adjacent reinforcing ribs (4) and the corresponding wall plates jointly enclose a cavity with a triangular cross section.

6. The vehicle body structure according to claim 4, characterized in that:

The second interlayer comprises a top cover area (400) positioned at the top of the automobile body and a side wall area (401) positioned at the side part of the automobile body, and the arrangement density of the reinforcing ribs (4) in the side wall area (401) is larger than that of the reinforcing ribs (4) in the top cover area (400).

7. The vehicle body structure according to any one of claims 1 to 6, characterized in that:

The automobile front wall (2) and the rear wall (3) are formed by extrusion in the left-right direction of the automobile, the front wall (2) is covered at the front ends of the upper assembly (11) and the floor (10), and the rear wall (3) is covered at the rear ends of the upper assembly (11) and the floor (10).

8. The vehicle body structure according to claim 7, characterized in that:

The front wall (2) and the rear wall (3) are of double-layer structures, a hollow third interlayer (43) is formed between two layers of wall plates of the front wall (2), and a hollow fourth interlayer (44) is formed between two layers of wall plates of the rear wall (3);

A plurality of reinforcing ribs (4) are arranged in the third interlayer (43) and the fourth interlayer (44), and the arrangement density of the reinforcing ribs (4) in the lower area is greater than that of the reinforcing ribs (4) in the upper area in the third interlayer (43) and the fourth interlayer (44).

9. The vehicle body structure according to claim 8, characterized in that:

A front windshield window (20) is arranged on the front wall (2), and a front windshield frame (21) for installing a front windshield glass (22) is arranged in the front windshield window (20);

The front windshield frame (21) is fixedly arranged in the front windshield window (20) by adopting a hot-melt self-tapping screw-connection process.

10. A vehicle, characterized in that:

The vehicle employs the vehicle body structure according to any one of claims 1 to 9.