Vehicle body front floor structure and vehicle

Abstract

The utility model provides a vehicle body front floor structure and a vehicle, the vehicle body front floor structure comprises a front floor body which is integrally formed by die casting; a plurality of outwards-protruding reinforcing rib lines are formed on the end face of at least one side of the front floor body, the reinforcing rib lines are distributed on the end face of the front floor body, and the reinforcing rib lines comprise first rib lines located in the left front corner area and the right front corner area of the front floor body. The first rib lines of the left front corner area and the right front corner area are both in an arc shape, and the first rib lines of the left front corner area and the right front corner area arch out in the direction pointing to the corners of the front floor body. According to the vehicle body front floor structure, a corresponding reinforcing structure can be formed on the rear side of the torsion box in the vehicle body, the deformation resistance of the position of the front floor on the rear side of the torsion box can be improved, deformation can be fully resisted under the offset collision working condition, collision force can be fully dispersed, the coping capacity of vehicle offset collision is improved, and the service life of the vehicle body is prolonged. Therefore, the collision safety of the whole vehicle can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, in particular to a vehicle body front floor structure. Meanwhile, the utility model also relates to a vehicle provided with the vehicle body front floor structure. Background Art

[0002] The front floor assembly is one of the important components of the vehicle body. It is usually welded together from multiple parts and is located between the left and right sill beams. It not only seals the bottom of the vehicle body to form a passenger compartment, but also serves as an auxiliary force transmission channel to disperse the impact force of the collision when the vehicle collides, so as to improve the safety of the whole vehicle collision. In the specific structure, the front floor assembly includes the front floor panel, the center channel and the front and rear seat cross beams, as well as related structures such as the left and right reinforced longitudinal beams to increase the structural strength and overall rigidity. However, in the existing front floor assembly, the rear side of the torsion box on both sides generally only has a sill beam close to the outer edge of the vehicle body, which has the disadvantages of limited structural strength and weak offset collision response capabilities, which is not conducive to improving the collision safety of the whole vehicle. Utility Model Content

[0003] In view of this, the utility model aims to provide a vehicle body front floor structure to improve the collision performance of the entire vehicle.

[0004] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0005] A vehicle body front floor structure, comprising an integrally die-cast front floor body;

[0006] At least one side end surface of the front floor body is formed with a convex reinforcing rib line, and the reinforcing rib line is a plurality of rib lines arranged on the end surface of the front floor body, and the reinforcing rib line includes a first rib line located in the left front corner area and the right front corner area of ​​the front floor body;

[0007] The first ribs in the left front corner area and the right front corner area are both arc-shaped, and the first ribs in the left front corner area and the right front corner area are both arched in a direction pointing to the corner of the front floor body.

[0008] Furthermore, the reinforcing rib line is formed on the lower end surface of the front floor body.

[0009] Furthermore, the reinforcing ribs include a second rib and a third rib that are cross-connected; the first rib and the second rib are multiple ribs arranged side by side, and the second rib and / or the third rib are provided on the entire end surface of the front floor, and the first rib is inclined along a first direction, and the second rib is inclined along a second direction, and the first direction is perpendicular to the second direction.

[0010] Furthermore, the left front corner area of ​​the front floor body is provided with the second rib line, which is cross-connected with the first rib line in the left front corner area; and / or the right front corner area of ​​the front floor body is provided with the third rib line, which is cross-connected with the first rib line in the right front corner area.

[0011] Furthermore, the reinforcing rib line includes a longitudinal rib line extending along the front-to-rear direction of the vehicle, the longitudinal rib line is located at the front of the front floor body and in the middle position of the left-to-right direction of the front floor body, and is used to form a central channel, and the longitudinal rib line is cross-connected with the second rib line and the third rib line; and / or, the reinforcing rib line includes a transverse rib line extending along the left-to-right direction of the vehicle, and is used to form a front floor cross beam, and the transverse rib line is cross-connected with the second rib line and the third rib line.

[0012] Furthermore, an upwardly protruding flange is provided at the edge of the front floor body, the flange is arranged circumferentially around the front floor body, and the top of the flange is provided with an outwardly turned connecting flange; a guide rib connected to the inner wall of the flange is provided on the upper end surface of the front floor body, and from the up and down direction of the vehicle, the guide ribs are a plurality of guide ribs corresponding to and connected with the reinforcing rib lines one by one, and the height of each guide rib is gradually reduced along the direction of the reinforcing rib line connected thereto.

[0013] Furthermore, the lower end surface of the front floor body is provided with annular ribs arranged circumferentially around the front floor body, the annular ribs are arranged close to the edge of the front floor body, and each of the reinforcing rib lines located on the lower end surface of the front floor body is connected to the annular ribs.

[0014] Furthermore, a boss bulging upward is formed on the front floor body, there are multiple bosses, and at least part of the bosses constitute seat mounting points for installing vehicle seats.

[0015] Furthermore, among the bosses constituting the seat mounting points, a step structure is formed on the side wall of each boss, and the cross-section of the portion of each boss located above the step structure is smaller than the cross-section of the portion located below the step structure.

[0016] Compared with the prior art, the utility model has the following advantages:

[0017] The vehicle body front floor structure described in the utility model is formed by integrally die-casting the front floor body, arranging reinforcing rib lines on the end faces of the front floor body, and making the air intake rib lines include first rib lines which are arranged in arc shape in the left and right front corner regions of the front floor body and arched toward the corners. A corresponding reinforcing structure can be formed on the rear side of a torsion box in the vehicle body, which is beneficial to increasing the deformation resistance of the front floor body position on the rear side of the torsion box, can fully resist deformation in offset collision conditions, and fully disperse the collision force, which can improve the vehicle's ability to cope with offset collisions, and is beneficial to improving the collision safety of the entire vehicle.

[0018] In addition, the reinforcing ribs are formed on the lower end surface of the front floor body, so that the upper end surface of the front floor body is a flat surface, which can ensure the comfort of the driver and passengers. By setting the second ribs and the second ribs that are cross-connected on the entire end surface of the front floor body, on the one hand, the first ribs and the second ribs can be used to increase the overall structural strength and rigidity of the front floor body, and on the other hand, the force transmission characteristics of the reinforcing ribs can be used to enable the entire front floor body to transmit force, which can increase the collision force transmission and dispersion effect, and help improve collision safety. The second rib is set in the left front corner area of ​​the front floor body, and the third rib is set in the right front corner area. It can play a supporting role on the basis of the arc-shaped first rib, which can further increase the rigidity of the two corner positions of the front end of the front floor body, and at the same time, it can also improve the collision force transmission and dispersion ability of the two corner positions, thereby improving collision safety.

[0019] Furthermore, by setting longitudinal ribs to form a middle channel and transverse ribs to form a front floor cross beam, the middle channel and the front floor cross beam and other corresponding structures can be set up on the basis of die-casting of the front floor body, thereby increasing the rigidity of the front floor body and improving the collision force transmission capability of the front floor body through longitudinal ribs equivalent to the middle channel and transverse ribs equivalent to the front floor cross beam. A flange is set at the edge of the front floor body, and guide ribs are set, and the height of the guide ribs is set to be gradually reduced, which can play an oblique supporting role for the flange position, help to ensure the stability of the connection between the front floor body and the door sill beam, and also make the flange and the reinforcing ribs on the end surface of the front floor body transition through the guide ribs, which can ensure that the transmission path is not interrupted, and help to increase the collision force transmission effect of the front floor body.

[0020] In addition, by providing annular ribs at the edge of the lower end surface of the front floor body and connecting the reinforcing rib lines on the lower end surface to the annular ribs, the structural strength of the edge of the front floor body can be improved, and the annular ribs can be used to better transfer the collision force to each reinforcing rib line, which can improve the collision force dispersion effect. Forming a boss on the front floor body and making the boss a seat mounting point can save seat mounting brackets and help reduce the cost of the front floor body. Providing a step structure on the side wall of the boss and making the boss form a structure with a small top and a large bottom can improve the stability of the boss structure on the front floor body, and also help to achieve weight reduction of the boss structure, which can be beneficial to the lightweight of the front floor body.

[0021] Another object of the present invention is to provide a vehicle, wherein the vehicle is provided with the vehicle body front floor structure as described above.

[0022] The vehicle described in the utility model is provided with the above-mentioned front floor structure of the vehicle body, which can help increase the deformation resistance of the front floor position behind the torsion box, can fully resist deformation in offset collision conditions, and fully disperse the collision force, thereby helping to improve the vehicle's ability to cope with offset collisions, and helping to improve the collision safety performance of the entire vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0024] Figure 1 This is a schematic diagram of the structure of the front floor structure of the vehicle body and the door sill beam when assembled according to an embodiment of the utility model;

[0025] Figure 2 for Figure 1 The enlarged view of point A in the middle;

[0026] Figure 3 for Figure 1 A schematic diagram of the structure shown in another viewing angle;

[0027] Figure 4 This is a schematic structural diagram of the lower end surface of the embodiment of the utility model;

[0028] Description of reference numerals:

[0029] 1. front floor body; 1a. upper end surface; 1b. lower end surface; 11. first rib line; 12. second rib line; 13. third rib line; 14. longitudinal rib line; 15. transverse rib line; 16. guide rib; 17. annular rib; 19. flange; 191. connecting flange; 101. boss;

[0030] 2. Threshold beam. DETAILED DESCRIPTION

[0031] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0032] In the following description, specific details such as specific system structures, technologies, etc. are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present application. However, it should be clear to those skilled in the art that the present application may also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present application.

[0033] In the description of the present invention, it should be noted that if there are terms such as "upper", "lower", "inner", "outer" and the like indicating orientation or positional relationship, they are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, if there are terms such as "first" and "second", they are also used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0034] Taking the vehicle in which the front floor structure of the vehicle body described in the present invention is located as an example, the directional words such as "up, down, left, right, front, and back" used in the embodiments are defined based on the up and down direction (also known as the height direction, or the Z direction of the whole vehicle), the left and right direction (also known as the width direction, or the Y direction of the whole vehicle), and the front and rear direction (also known as the length direction, or the X direction of the whole vehicle). "Inside and outside" are defined based on the contour of the corresponding parts. For example, "inside" and "outside" are defined based on the contour of the vehicle, and the side of the vehicle contour close to the middle of the vehicle is "inside", and the opposite is "outside".

[0035] In addition, in the description of the present invention, unless otherwise clearly defined, the terms "installation", "connection", "connection" and "connector" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood in combination with specific circumstances.

[0036] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0037] Embodiment 1

[0038] The present embodiment relates to a vehicle body front floor structure, which can form a corresponding reinforcement structure at the rear side of the torsion box in the vehicle body, which is beneficial to increase the deformation resistance of the front floor position behind the torsion box and improve the vehicle's ability to cope with offset collisions, thereby making the entire vehicle have better collision safety.

[0039] In terms of overall structure, Figures 1 to 4 As shown, the vehicle body front floor structure of this embodiment includes an integrally die-cast front floor body 1.

[0040] In addition, at least one side end surface of the front floor body 1 is formed with a protruding reinforcing rib line, which is arranged on the end surface of the front floor body and includes a first rib line 11 located in the left front corner area and the right front corner area of ​​the front floor body 1.

[0041] The first ribs 11 in the left front corner area and the right front corner area are both arc-shaped, and the first ribs 11 in the left front corner area and the right front corner area are both arched in the direction pointing to the corner of the front floor body 1 .

[0042] It can be understood that the front floor body 1 of the present embodiment can utilize the high strength of the die-casting to ensure the structural strength of the front floor body 1. At the same time, the first ribs 11 that are arc-shaped and arched toward the corners are arranged in the left and right front corner areas of the front floor body 1. A corresponding reinforcement structure can be formed on the rear side of the torsion box in the vehicle body, which is beneficial to increase the deformation resistance of the front floor position behind the torsion box, thereby improving the vehicle's ability to cope with offset collisions.

[0043] Secondly, it should be mentioned that the related structural parts not mentioned in the front floor structure of the vehicle body in this embodiment can refer to the various structures of the front structure of the vehicle body well known to those skilled in the art, such as Figure 1 and Figure 3 As shown, door sill beams 2 and the like are provided on both the left and right sides of the front floor body 1 .

[0044] Based on the above overall introduction, specifically, in this embodiment, as a preferred implementation form, Figure 3 and Figure 4 As shown, a reinforcing rib line is formed on the lower end surface 1b of the front floor body 1. Thus, the overall structural strength of the front floor body 1 can be improved while the upper end surface 1a of the front floor body 1 is a flat surface, thereby ensuring the comfort of the driver and passengers.

[0045] Furthermore, in this embodiment, as a preferred implementation form, the reinforcing rib lines of this embodiment include a second rib line 12 and a third rib line 13 that are cross-connected.

[0046] Among them, the second ribs 12 and the third ribs 13 are multiple ribs arranged side by side, and the second ribs 12 and the third ribs 13 are provided on the entire lower end surface 1b of the front floor body 1, and the second ribs 12 are inclined along the first direction, and the third ribs 13 are inclined along the second direction, and the first direction is perpendicular to the second direction.

[0047] The advantage of such a configuration is that, on the one hand, the first rib line 11 and the second rib line 12 can be used to increase the overall structural strength and rigidity of the front floor body 1, and on the other hand, force transmission no longer relies on traditional structures such as the front floor cross beam and reinforced longitudinal beam, but the force transmission characteristics of the reinforced rib line can be used to make the collision force radially dispersed along each reinforced rib line, thereby allowing the entire front floor body 1 to transmit force, which can increase the collision force transmission and dispersion effect and help improve collision safety.

[0048] During specific implementation, the setting of the first direction or the second direction of this embodiment can be set and adjusted accordingly according to the actual structural layout requirements of the front floor body 1. For example, under the premise of keeping the first direction perpendicular to the second direction, the first direction and the second direction are both at an angle of 45° to the front and rear directions of the vehicle, so as to obtain relatively better structural reinforcement and force transmission effects.

[0049] Of course, in this embodiment, the coordinated arrangement of the second rib line 12 and the third rib line 13 can effectively enhance the structural strength of the front floor. However, if necessary, only the second rib line 12 or the third rib line 13 can be arranged according to actual structural reinforcement requirements to obtain different structural reinforcement and layout requirements.

[0050] To expand, in this embodiment, as a preferred implementation form, continue to refer to Figure 3 and Figure 4 As shown, the left front corner region of the front floor body 1 is provided with a second rib line 12, which is cross-connected with the first rib line 11 of the left front corner region. At the same time, as a preferred implementation form, the right front corner region of the front floor body 1 of this embodiment is provided with a third rib line 13, which is cross-connected with the first rib line 11 of the right front corner region.

[0051] It can be understood that setting the second rib 12 in the left front corner area of ​​the front floor body 1 and setting the third rib 13 in the right front corner area can play a supporting role on the basis of the arc-shaped first rib 11, and can further increase the rigidity of the two corner positions at the front end of the front floor body 1, while also improving the collision force transmission and dispersion capabilities at the two corner positions, thereby improving collision safety.

[0052] Moreover, in this embodiment, as a preferred implementation form, the reinforcing rib line includes a longitudinal rib line 14 extending along the front-to-rear direction of the vehicle, the longitudinal rib line 14 is located at the front of the front floor body 1, and is located in the middle position of the front floor body 1 in the left-right direction, and is used to form a central channel, and the longitudinal rib line 14 is cross-connected with the second rib line 12 and the third rib line 13.

[0053] Also as a preferred implementation form, the reinforcing ribs of this embodiment include transverse ribs 15 extending in the left-right direction of the vehicle. The transverse ribs 15 are cross-connected with the second ribs 12 and the third ribs 13 and are used to form a front floor crossbeam.

[0054] In this way, the middle channel can be formed by setting the longitudinal ribs 14 and the front floor cross beam can be formed by setting the transverse ribs 15, and then the setting of corresponding structures such as the middle channel and the front floor cross beam can be realized on the basis of the die-casting of the front floor body 1. Therefore, the stiffness of the front floor body 1 can be increased by the longitudinal ribs 14 equivalent to the middle channel and the transverse ribs 15 equivalent to the front floor cross beam, and the collision force transmission capacity of the front floor body 1 can be improved.

[0055] Of course, in specific implementation, the number and arrangement of the longitudinal ribs 14 and transverse ribs 15 of this embodiment can be set and adjusted accordingly according to the actual structural reinforcement requirements and arrangement requirements. For example, to form a central channel, the longitudinal beam ribs are two relatively arranged in the middle of the left-right direction of the front floor body 1. At the same time, to form the front floor cross beam, the transverse ribs 15 are four located in the middle of the front-back direction of the front floor body 1, and respectively form the front floor front cross beam (corresponding to the front seat installation position) and the front floor rear cross beam (corresponding to the rear seat installation position).

[0056] It is still worth mentioning that in this embodiment, the width dimensions of the first rib line 11, the second rib line 12 and the third rib line 13 are set to be between 2-3mm before the demolding design, such as 2mm, 2.5mm or 3mm. Because the width dimension is <2mm, it will lead to insufficient liquid flow at each rib line position, more bubbles and other problems, which will eventually lead to weak strength of each rib line; and if the width dimension is greater than 3mm, there will be problems of excess structure and excessive weight.

[0057] At the same time, the gap size between two adjacent first rib lines 11 in the same area (left front corner area or right front corner area), as well as the gap size between two adjacent second rib lines 12 and two adjacent third rib lines 13 are preferably arranged between 60 and 100 mm, for example, 60 mm, 80 mm or 100 mm, etc., so as to ensure structural strength while reducing material consumption.

[0058] Moreover, the height dimensions of the guide rib 16 and the reinforcing rib line connected thereto in the vertical direction of the vehicle can also be set and adjusted accordingly according to the actual structural reinforcement requirements, for example, specifically set to 8mm, 10mm or 12mm.

[0059] In addition, in this embodiment, as a preferred implementation form, see Figure 2 and Figure 4 As shown, an upwardly protruding flange 19 is provided at the edge of the front floor body 1 , the flange 19 is arranged circumferentially around the front floor body 1 , and a connecting flange 191 turned outward is provided at the top of the flange 19 .

[0060] In specific implementation, the connection flanges 191 located on the left and right sides of the front floor body 1 are preferably overlapped on the top of the door sill beam 2 on the corresponding side to obtain good connection reliability between the front floor body 1 and the left and right door sill beams 2.

[0061] At the same time, as a preferred implementation form, in this embodiment, a guide rib 16 connected to the inner wall of the flange 19 is provided on the upper end surface 1a of the front floor body 1. From the up and down direction of the vehicle, the guide ribs 16 are multiple and connected to the reinforcing rib lines one by one, and the height of each guide rib 16 is gradually reduced along the direction of the reinforcing rib line connected thereto.

[0062] A flange 19 is provided at the edge of the front floor body 1, and a guide rib 16 is provided, and the height of the guide rib 16 is gradually reduced, which can provide an oblique support for the position of the flange 19, and help to ensure the stability of the connection between the front floor body 1 and the door sill beam 2. At the same time, the flange 19 and the reinforcing rib line on the end surface of the front floor body 1 can be transitioned through the guide rib 16, which can ensure that the transmission path is not interrupted, and help to increase the collision force transmission effect of the front floor body 1.

[0063] It is worth mentioning here that the connection of this embodiment, that is, the projection of the corresponding guide rib 16 and the reinforcing rib line in the vertical direction of the whole vehicle at least partially overlap.

[0064] Furthermore, as a preferred implementation form, in this embodiment, an annular rib 17 arranged circumferentially around the front floor body 1 is provided on the lower end surface 1b of the front floor 1, and the annular rib 17 is arranged close to the edge of the front floor body 1, and each reinforcing rib line located on the lower end surface 1b of the front floor body 1 is connected to the annular rib 17.

[0065] The advantage of such a configuration is that the structural strength of the edge of the front floor body 1 can be improved, and the annular ribs 17 can be used to better transmit the collision force to each reinforcing rib line, thereby improving the collision force dispersion effect.

[0066] In addition, in this embodiment, as a preferred implementation form, Figure 1 As shown, a boss 101 bulging upward is formed on the front floor body 1, and there are multiple bosses 101, and at least part of the bosses 101 constitute seat mounting points for vehicle seat installation. In this way, seat mounting brackets can be saved, which helps to reduce the cost of the front floor body 1.

[0067] Of course, the number and arrangement positions of the bosses 101 in this embodiment can be set and adjusted according to the actual installation requirements of the vehicle seats. For example, it is divided into two groups for installing the front seats and for installing the rear seats, and both groups have four bosses arranged in sequence along the left and right directions of the vehicle.

[0068] Meanwhile, the seat mounting point may be specifically a mounting hole provided at the top of the boss 101. Moreover, in this embodiment, in addition to forming the middle channel and the front floor cross beam by part of the reinforcing ribs, the middle channel or the front floor cross beam may also be formed by part of the reinforcing ribs when necessary to meet different structural design requirements.

[0069] If necessary, a transverse rib 15 may be preferably provided near the boss 101 constituting the seat mounting point, which is also beneficial to further improve the structural strength and rigidity of the boss 101 and the seat mounting point, thereby not only facilitating better force transmission characteristics, but also improving the seat installation stability.

[0070] Specifically, in this embodiment, as a preferred implementation form, see Figure 2 As shown, among the bosses 101 constituting the seat mounting points, a step structure is formed on the side wall of each boss 101, and the cross section of each boss 101 located above the step structure is smaller than the cross section of the part located below the step structure.

[0071] The advantage of such a configuration is that it can improve the stability of the boss 101 structure disposed on the front floor body 1 , and also help to reduce the weight of the boss 101 structure, which can be beneficial to the lightweight of the front floor body 1 .

[0072] The vehicle body front floor structure of the present embodiment is formed by integrally die-casting the front floor body 1, arranging reinforcing ribs on the end surface of the front floor body 1, and making the air intake ribs include first ribs 11 which are arranged in arc shape in the left and right front corner areas of the front floor body 1 and arched toward the corners. A corresponding reinforcing structure can be formed on the rear side of the torsion box in the vehicle body, which is beneficial to increase the deformation resistance of the front floor position behind the torsion box, can fully resist deformation in offset collision conditions, and fully disperse the collision force, which can improve the vehicle's ability to cope with offset collisions, and is beneficial to improving the collision safety of the entire vehicle.

[0073] Embodiment 2

[0074] This embodiment relates to a vehicle, in which the vehicle body front floor structure in the first embodiment is provided.

[0075] The vehicle of this embodiment, by setting the front floor structure of the vehicle body in Embodiment 1, can increase the deformation resistance of the front floor position behind the torsion box, fully resist deformation in offset collision conditions, and fully disperse the collision force, so that the vehicle's ability to cope with offset collision is effectively improved, thereby helping to improve the safety quality and market competitiveness of the entire vehicle.

[0076] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A vehicle body front floor structure, characterized in that: It comprises a front floor body (1) formed by integral die-casting; At least one side end surface of the front floor body (1) is formed with an outwardly protruding reinforcing rib line, the reinforcing rib line is a plurality of rib lines arranged on the end surface of the front floor body (1), and the reinforcing rib line includes a first rib line (11) located in the left front corner area and the right front corner area of ​​the front floor body (1); The first ribs (11) in the left front corner area and the right front corner area are both arc-shaped, and the first ribs (11) in the left front corner area and the right front corner area are both arched in a direction pointing to the corner of the front floor body (1).

2. The vehicle body front floor structure according to claim 1, characterized in that: The reinforcing rib line is formed on the lower end surface (1b) of the front floor body (1).

3. The vehicle body front floor structure according to claim 2, characterized in that: The reinforcing rib line comprises a second rib line (12) and a third rib line (13) which are cross-connected; The first ribs (11) and the second ribs (12) are multiple ribs arranged side by side, and the second ribs (12) and / or the third ribs (13) are provided on the entire end surface of the front floor, and the first ribs (11) are inclined along a first direction, and the second ribs (12) are inclined along a second direction, and the first direction is perpendicular to the second direction.

4. The vehicle body front floor structure according to claim 3, characterized in that: The left front corner region of the front floor body (1) is provided with the second rib line (12), and the second rib line (12) is cross-connected with the first rib line (11) of the left front corner region; and / or, The right front corner region of the front floor body (1) is provided with the third rib line (13), and the third rib line (13) is cross-connected with the first rib line (11) in the right front corner region.

5. The vehicle body front floor structure according to claim 3, characterized in that: The reinforcing rib line comprises a longitudinal rib line (14) extending in the front-rear direction of the vehicle, the longitudinal rib line (14) is located at the front of the front floor body (1) and in the middle of the left-right direction of the front floor body (1) and is used to form a central channel, and the longitudinal rib line (14) is cross-connected with the second rib line (12) and the third rib line (13); and / or, The reinforcing ribs include transverse ribs (15) extending in the left-right direction of the vehicle and used to form a front floor crossbeam, and the transverse ribs (15) are cross-connected with the second ribs (12) and the third ribs (13).

6. The vehicle body front floor structure according to claim 2, characterized in that: The edge of the front floor body (1) is provided with a flange (19) protruding upward, the flange (19) is arranged around the circumference of the front floor body (1), and the top of the flange (19) is provided with a connecting flange (191) arranged outward; The upper end surface (1a) of the front floor body (1) is provided with a guide rib (16) connected to the inner wall of the flange (19); when viewed from the upper and lower directions of the vehicle, the guide ribs (16) are a plurality of guide ribs connected to the reinforcing rib lines in a one-to-one correspondence, and the height of each guide rib (16) is gradually reduced along the direction of the reinforcing rib lines connected thereto.

7. The vehicle body front floor structure according to claim 6, characterized in that: The lower end surface (1b) of the front floor body (1) is provided with an annular rib (17) arranged circumferentially around the front floor body (1); the annular rib (17) is arranged close to the edge of the front floor body (1), and each of the reinforcing rib lines located on the lower end surface (1b) of the front floor body (1) is connected to the annular rib (17).

8. The vehicle body front floor structure according to any one of claims 1 to 7, characterized in that: The front floor body (1) is formed with an upwardly bulging boss (101), there are a plurality of bosses (101), and at least part of the bosses (101) constitute seat mounting points for mounting vehicle seats.

9. The vehicle body front floor structure according to claim 8, characterized in that: In the bosses (101) constituting the seat mounting point, a step structure is formed on the side wall of each boss (101), and the cross section of each boss (101) located above the step structure is smaller than the cross section of the part located below the step structure.

10. A vehicle, characterized in that: The vehicle is provided with the vehicle body front floor structure according to any one of claims 1 to 9.

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