Floor assembly and automobile

Abstract

The invention relates to the technical field of automobile body arrangement, in particular to a floor assembly and an automobile, the floor assembly comprises a first longitudinal beam, a second longitudinal beam, a first cross beam, a second cross beam, a first reinforcing cross beam, a first reinforcing longitudinal beam, a second reinforcing longitudinal beam, a first floor and a second floor, the first longitudinal beam and the second longitudinal beam are arranged side by side in the first direction; the second cross beam, the first reinforcing cross beam and the second reinforcing cross beam are connected with the first longitudinal beam and the second longitudinal beam; wherein the first cross beam, the first longitudinal beam, the second cross beam and the second longitudinal beam define a first cavity, the first floor covers the first cavity, the second cross beam, the first longitudinal beam and the second longitudinal beam define a second cavity, and the second floor covers the second cavity; one end of the first reinforcing longitudinal beam and one end of the second reinforcing longitudinal beam are both connected with the first reinforcing cross beam, and the other end of the first reinforcing longitudinal beam and the other end of the second reinforcing longitudinal beam both extend to the side, away from the first cross beam, of the second floor. According to the floor assembly, the deformation resistance of the floor assembly can be improved.

Description

Technical Field

[0001] The present application relates to the technical field of vehicle body layout, and in particular to a floor assembly and a vehicle. Background Art

[0002] A car is a vehicle for transporting cargo and passengers, which accommodates the cargo and passengers through a passenger compartment.

[0003] The passenger compartment is generally formed by a roof, floor, side panels, doors, front panels and rear panels. The compartment can hold cargo and provide seats for passengers.

[0004] In the related art, since the floor is the part that mainly bears the impact when a collision occurs, it is easy to deform, causing injuries to passengers. Summary of the invention

[0005] In view of this, the present application provides a floor assembly and a car to improve the ability of resisting deformation.

[0006] Specifically, the following technical solutions are included:

[0007] A first aspect of the present application provides a floor assembly, the floor assembly comprising a first longitudinal beam, a second longitudinal beam, a first transverse beam, a second transverse beam, a first reinforcing transverse beam, a first reinforcing longitudinal beam, a second reinforcing longitudinal beam, a first floor panel and a second floor panel, wherein:

[0008] The first longitudinal beam and the second longitudinal beam are arranged side by side along a first direction;

[0009] The second cross beam, the first reinforcing cross beam, and the second reinforcing cross beam are all connected to the first longitudinal beam and the second longitudinal beam;

[0010] The first cross beam, the first longitudinal beam, the second cross beam and the second longitudinal beam form a first cavity, the first floor covers the first cavity, the second cross beam, the first longitudinal beam and the second longitudinal beam form a second cavity, and the second floor covers the second cavity;

[0011] One end of the first reinforcing longitudinal beam and one end of the second reinforcing longitudinal beam are both connected to the first reinforcing cross beam, and the other end of the first reinforcing longitudinal beam and the other end of the second reinforcing longitudinal beam extend to a side of the second floor away from the first cross beam.

[0012] Optionally, the same side of the first reinforcing cross beam, the first reinforcing longitudinal beam and the second reinforcing longitudinal beam is attached to and connected to the second floor.

[0013] Optionally, the floor assembly includes a second reinforcing cross beam, wherein the second reinforcing cross beam is located between the first reinforcing longitudinal beam and the second reinforcing longitudinal beam and connects the first reinforcing longitudinal beam and the second reinforcing longitudinal beam.

[0014] Optionally, the first reinforcing longitudinal beam and the second reinforcing longitudinal beam intersect with a horizontal plane.

[0015] Optionally, the first longitudinal beam includes a first body, an extension section and a connecting section, the first body and the extension section are connected and extend along the first direction, the connecting section is located on one side of the first body, and connects the first floor and the first body and connects the second floor and the first body.

[0016] Optionally, the floor assembly includes a plurality of third reinforcing longitudinal beams, the first ends of the plurality of third reinforcing longitudinal beams are connected to the first cross beam, the plurality of third reinforcing longitudinal beams are spaced apart along the first direction, and the second ends of the plurality of third reinforcing longitudinal beams extend in a direction away from the first floor.

[0017] Optionally, the floor assembly includes a third cross beam and a fourth cross beam, the third cross beam and the fourth cross beam are both located in the first cavity, the third cross beam and the fourth cross beam are both attached to the first floor on the same side, and the third cross beam and the fourth cross beam are both connected to the first longitudinal beam and the second longitudinal beam.

[0018] Optionally, one side of the second cross beam is in contact with the second floor, and the second cross beam and the first reinforcing cross beam are respectively located on two opposite sides of the second floor.

[0019] Optionally, the floor assembly includes a first threshold, and the first threshold is attached to the first longitudinal beam and connected to the first longitudinal beam.

[0020] A second aspect of the present application provides a car, comprising a floor assembly as described in the above technical solution.

[0021] The beneficial effects of the technical solution provided by the embodiment of the present application include at least: the first longitudinal beam, the second longitudinal beam and the first cross beam can withstand impacts from corresponding directions, wherein the impacts received by the first longitudinal beam and the second longitudinal beam can be mutually transmitted through the first cross beam and the second cross beam to maintain the shapes of the first cavity and the second cavity, which is conducive to reducing the deformation of the first floor covering the first cavity and the second floor covering the second cavity due to impact, thereby reducing the situation of passengers' hands being deformed due to deformation. The first longitudinal beam and the second longitudinal beam can improve the ability of the second floor to resist deformation due to impact, thereby reducing the deformation of the second floor due to direct impact. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 A bottom view of a floor assembly provided in an embodiment of the present application;

[0024] Figure 2 A top view of a floor assembly provided in an embodiment of the present application;

[0025] Figure 3 A schematic diagram of the structure of a first longitudinal beam provided in an embodiment of the present application;

[0026] Figure 4 A schematic diagram of the structure of a first threshold provided in an embodiment of the present application;

[0027] Figure 5 A schematic diagram of the structure of a first floor provided in an embodiment of the present application;

[0028] Figure 6 A schematic diagram of the structure of a second floor provided in an embodiment of the present application;

[0029] Figure 7 A schematic diagram of the structure of a first crossbeam provided in an embodiment of the present application;

[0030] Figure 8 A schematic diagram of the structure of a second crossbeam provided in an embodiment of the present application;

[0031] Fig. 9 A full cross-sectional schematic diagram of a second crossbeam provided in an embodiment of the present application.

[0032] The reference numerals in the figures represent respectively:

[0033] 10. first longitudinal beam; 11. first body; 111. first reinforcing rib; 112. first mounting structure; 113. first flange surface; 116. second flange surface; 12. extension section; 13. connection section;

[0034] 20. Second longitudinal beam;

[0035] 30. first threshold; 312. threshold end; 313. fourth flange surface;

[0036] 40. The second threshold;

[0037] 50, first floor; 51, seat crossbeam; 511, third reinforcement rib; 512, third flange surface; 52, middle channel extension plate; 53, first sub-floor; 531, fourth flange surface; 54, second sub-floor; 55, third sub-floor; 551, fifth reinforcement rib; 553, fuel tank viewing window; 56, third crossbeam; 57, fourth crossbeam; 58, connection reinforcement plate;

[0038] 60, second floor; 611, sixth reinforcement rib; 62, third connecting plate; 64, first reinforcement crossbeam; 65, first reinforcement longitudinal beam; 66, second reinforcement crossbeam; 67, second reinforcement longitudinal beam;

[0039] 70, first cross beam; 711, second reinforcing rib; 712, first flange surface; 713, second flange surface; 72, third reinforcing longitudinal beam; 73, second connecting plate;

[0040] 80. Second cross beam; 81. First connecting plate; 811. Third flange surface; 813. Weight reduction hole.

[0041] The above drawings have shown clear embodiments of the present application, which will be described in more detail later. These drawings and text descriptions are not intended to limit the scope of the present application in any way, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0043] The directional nouns involved in the embodiments of the present application, such as "upper", "lower", "side", etc., are generally represented by Figure 1 The relative relationship of the orientation shown in the figure is used as the basis, and these orientation terms are used only to more clearly describe the relationship between structures, not to describe absolute orientation. When the product is placed in different postures, the orientation may change, for example, "up" and "down" may be interchangeable.

[0044] Unless otherwise defined, all technical terms used in the embodiments of the present application have the same meanings as commonly understood by those of ordinary skill in the art.

[0045] In order to make the technical solutions and advantages of the present application more clear, the implementation methods of the present application will be further described in detail below with reference to the accompanying drawings.

[0046] A first aspect of the present application provides a floor assembly, such as Figure 1 and Figure 2 As shown, the floor assembly includes a first longitudinal beam 10, a second longitudinal beam 20, a first cross beam 70, a second cross beam 80, a first reinforcing cross beam 64, a first reinforcing longitudinal beam 65, a second reinforcing longitudinal beam 67, a first floor panel 50 and a second floor panel 60, wherein:

[0047] The first longitudinal beam 10 and the second longitudinal beam 20 are arranged side by side along a first direction;

[0048] The second cross beam 80, the first reinforcing cross beam 64, and the second reinforcing cross beam 66 are all connected to the first longitudinal beam 10 and the second longitudinal beam 20;

[0049] The first cross beam 70, the first longitudinal beam 10, the second cross beam 80 and the second longitudinal beam 20 form a first cavity, the first floor 50 covers the first cavity, the second cross beam 80, the first longitudinal beam 10 and the second longitudinal beam 20 form a second cavity, and the second floor 60 covers the second cavity;

[0050] One end of the first reinforcing longitudinal beam 65 and one end of the second reinforcing longitudinal beam 67 are both connected to the first reinforcing cross beam 64 , and the other end of the first reinforcing longitudinal beam 65 and the other end of the second reinforcing longitudinal beam 67 extend to a side of the second floor 60 away from the first cross beam 70 .

[0051] It is understandable that the first longitudinal beam 10, the second longitudinal beam 20 and the first cross beam 70 can withstand impacts from corresponding directions, wherein the impacts received by the first longitudinal beam 10 and the second longitudinal beam 20 can be mutually transmitted through the second cross beam 80 to maintain the shapes of the first cavity and the second cavity. This is conducive to reducing the deformation of the first floor 50 covering the first cavity and the second floor 60 covering the second cavity due to impact, thereby reducing the situation of passengers' hands being hurt by deformation. The first longitudinal beam 10 and the second longitudinal beam 20 can improve the ability of the second floor 60 to resist deformation due to impact, thereby reducing the deformation of the second floor 60 caused by direct impact.

[0052] In the embodiment of the present application, the first direction may be the length direction of the car.

[0053] In the embodiment of the present application, the first cross beam 70 and the first floor 50 , the second cross beam 80 and the first longitudinal beam 10 , and the second cross beam 80 and the second longitudinal beam 20 can be connected by welding.

[0054] In the embodiment of the present application, part of the longitudinal section of the first longitudinal beam 10 may be roughly in the shape of a "X", which is conducive to improving the anti-bending deformation capability of the first longitudinal beam 10. The shapes of the longitudinal sections of the first longitudinal beam 10 may be the same or different.

[0055] In the embodiment of the present application, the shape of part of the longitudinal section of the second longitudinal beam 20 may be roughly in the shape of a "X", which is conducive to improving the anti-bending deformation capability of the second longitudinal beam 20. The shapes of the longitudinal sections of the second longitudinal beam 20 may be the same or different.

[0056] In the embodiments of the present application, Figure 3 As shown, a first reinforcing rib 111 may be arranged inside the first longitudinal beam 10, and the first reinforcing rib 111 may protrude inside or outside the shape of the cross. The second longitudinal beam 20 may be arranged with the reinforcing structure of the first longitudinal beam 10, and the effect is the same, which will not be repeated here.

[0057] In the embodiment of the present application, a first mounting structure 112 may be arranged at the bottom of the first longitudinal beam 10, and the first mounting structure 112 may be used to connect to the rear suspension. The first mounting structure 112 may be a hole. The second longitudinal beam 20 may be arranged with the mounting structure of the first longitudinal beam 10, and the effect is the same as that of the first longitudinal beam 10, which will not be described in detail here.

[0058] In the embodiment of the present application, the side of the second longitudinal beam 20 can directly bear the impact, deform and sink into the first cavity, wherein the second cross beam 80 can transfer the impact from the second longitudinal beam 20 to the first longitudinal beam 10. In this way, by dispersing the impact, the deformation of the first longitudinal beam 10 can be reduced.

[0059] In the embodiment of the present application, the second cross beam 80 may be arranged with a weight-reducing hole 813 .

[0060] In the embodiments of the present application, Figure 7 As shown, a second reinforcing rib 711 may be arranged on the first cross beam 70, and the number of the second reinforcing rib 711 is multiple, and the multiple second reinforcing ribs 711 are sequentially spaced along the length direction of the first cross beam 70. The first reinforcing rib 111 may be a concave or convex structure, and is integrally formed with the first cross beam 70. A first flange surface 712 and a second flange surface 713 are arranged on both sides of the first cross beam 70, and the first flange surface 712 and the second flange surface 713 are respectively welded to the first floor 50.

[0061] In the embodiments of the present application, Figure 8 and Fig. 9As shown, first connection plates 81 are respectively arranged at both ends of the second cross beam 80. The first connection plates 81 are welded to the second floor 60 through the third flanging surfaces 811 on both sides thereof to be connected to the second floor 60, which is beneficial for the second floor 60 to cover the second cavity. In the embodiment of the present application, the cross-sectional shape of the first connection plate 81 can be in a shape of a capital "J". In the embodiment of the present application, the first connection plate 81 can be connected to the end of the second cross beam 80 by welding. In the embodiment of the present application, the first connection plate 81 can also be used for welding with the side wall assembly to form a cavity in the vehicle body.

[0062] In the embodiment of the present application, the first floor 50 includes a seat cross beam 51. The seat cross beam 51 is attached to and welded to the outer side surface of the first cross beam 70. The seat cross beam 51 connects the first longitudinal beam 10 and the second longitudinal beam 20. The seat cross beam 51 is welded to the vehicle body components located in the front through the third flange surface 512. A plurality of third reinforcing ribs 511 are arranged on the seat cross beam 51, and the third reinforcing ribs 511 can be protrusions or recesses.

[0063] In the embodiment of the present application, the first floor 50 includes a middle channel extension plate 52. The middle channel extension plate 52 is located between two seat cross beams 51 and is connected to the two seat cross beams 51. Fourth reinforcing ribs are arranged on the middle channel extension plate 52. The fourth reinforcing ribs can improve the stiffness of the middle channel extension plate 52, and the fourth reinforcing ribs can be protrusions or recesses.

[0064] In the embodiment of the present application, third connection plates 62 are arranged on opposite sides of the second floor 60, and the third connection plates 62 can be welded to the second floor 60.

[0065] In the embodiment of the present application, a sixth reinforcing rib 611 is arranged on the second floor 60.

[0066] In some embodiments of the present application, as Figure 1 shown, the same side of the first reinforcing cross beam 64, the first reinforcing longitudinal beam 65 and the second reinforcing longitudinal beam 67 is attached to and connected to the second floor 60.

[0067] It can be understood that since the boundary of the second cavity is an open figure, at the open position, that is, the opening formed at the ends of the first longitudinal beam 10 and the second longitudinal beam 20, the impact resistance is weak. By attaching and connecting the same side of the first reinforcing cross beam 64, the first reinforcing longitudinal beam 65 and the second reinforcing longitudinal beam 67 to the second floor 60, it is beneficial to improve the deformation resistance of the second floor 60 and reduce the deformation of the second floor 60.

[0068] In some embodiments of the present application, as Figure 6As shown, the floor assembly includes a second reinforcing cross member 66 , which is located between the first reinforcing longitudinal member 65 and the second reinforcing longitudinal member 67 and connects the first reinforcing longitudinal member 65 and the second reinforcing longitudinal member 67 .

[0069] It can be understood that the second reinforcing cross beam 66 connects the first reinforcing longitudinal beam 65 and the second reinforcing longitudinal beam 67, which is conducive to forming a cavity with a closed-shaped boundary with the first reinforcing cross beam 64, the first reinforcing longitudinal beam 65 and the second reinforcing longitudinal beam 67, so that the four can transmit impact to each other, thereby improving the ability of the second floor 60 to resist deformation.

[0070] In the embodiment of the present application, the longitudinal cross-sections of the first reinforcing cross-beam 64 , the second reinforcing cross-beam 66 , the first reinforcing longitudinal beam 65 and the second reinforcing longitudinal beam 67 are all in a "J" shape, and their openings face toward the second floor 60 , and are connected to the second floor 60 by welding.

[0071] In some of the embodiments of this application, Figure 6 As shown, the first reinforcing longitudinal beam 65 and the second reinforcing longitudinal beam 67 intersect the horizontal plane.

[0072] It is understandable that such an arrangement is conducive to the first reinforcing longitudinal beam 65 and the second reinforcing longitudinal beam 67 to reserve a certain space for the spare tire in the height direction, and the spare tire can be installed at the position of the first reinforcing longitudinal beam 65 and the second reinforcing beam to reduce the contact with the ground. This can provide the passenger compartment with a relatively large storage space and riding space, while reducing the smell of the tire in the interior space, thereby improving the riding comfort of the entire vehicle.

[0073] In the embodiment of the present application, the first reinforcing longitudinal beam 65 has the position where it intersects with the first reinforcing transverse beam 64 as the vertex, the side connected to the vertex on the horizontal plane as the starting side, and the first reinforcing longitudinal beam 65 as the terminal side to form an angle, and the angle is less than 90°.

[0074] In the embodiment of the present application, the second reinforcing longitudinal beam 67 has the position where it intersects with the first reinforcing transverse beam 64 as the vertex, the side connected to the vertex on the horizontal plane as the starting side, and the second reinforcing longitudinal beam 67 as the terminal side to form an angle, and the angle is less than 90°.

[0075] In some of the embodiments of this application, Figure 3 As shown, the first longitudinal beam 10 includes a first body 11, an extension section 12 and a connecting section 13. The first body 11 and the extension section 12 are connected and extend along a first direction. The connecting section 13 is located on one side of the first body 11 and connects the first floor 50 and the first body 11 as well as the second floor 60 and the first body 11.

[0076] It is understandable that the first body 11 and the extension section 12 can play a role in bearing impact. The connecting section 13 is used to connect the first floor 50 and the second floor 60. The length of the extension section 12 can be adjusted according to the actual requirements so that the length of the floor assembly matches the design requirements. For example, by increasing the length of the extension section 12, the overall length of the first longitudinal beam 10 is extended, and vice versa. This is conducive to improving the versatility of the floor assembly on cars of different sizes and reducing the development cost of the mold. In addition, by adjusting the thickness and material strength of the extension section 12, it is also beneficial for the floor assembly to adapt to different car design requirements.

[0077] In an embodiment of the present application, there may be multiple connecting sections 13, each connecting section 13 being connected to the first floor 50 or the second floor 60 by welding, wherein the longitudinal cross-section of the connecting section 13 may be in the shape of a "J" to improve the connection performance with the first floor 50 or the second floor 60.

[0078] In the embodiment of the present application, the longitudinal cross-sections of the first body 11 and the extension section 12 are both in the shape of a "X".

[0079] In the embodiment of the present application, the structure of the second longitudinal beam 20 may be symmetrical to the structure of the first longitudinal beam 10 , so that the floor assembly has similar performance in the force direction of the first longitudinal beam 10 and the force direction of the second longitudinal beam 20 .

[0080] In some of the embodiments of this application, Figure 7 As shown, the floor assembly includes a plurality of third reinforcing longitudinal beams 72 , the first ends of the plurality of third reinforcing longitudinal beams 72 are connected to the first cross beam 70 , the plurality of third reinforcing longitudinal beams 72 are spaced apart along the first direction, and the second ends of the plurality of third reinforcing longitudinal beams 72 extend in a direction away from the first floor 50 .

[0081] It is understandable that the third reinforcing longitudinal beam 72 can be used to connect with the components located in the front, such as the front floor cross beam frame, and the plurality of third reinforcing longitudinal beams 72 can disperse the impact from the front to the first cross beam 70. The dispersed impact can reduce the deformation of the first cross beam 70, which is conducive to improving the ability of the floor assembly to resist deformation.

[0082] In the embodiment of the present application, the longitudinal section of the third reinforcing longitudinal beam 72 may be in the shape of a Chinese character "J", with its opening facing the first cross beam 70, and connected to the first cross beam 70 by overlapping. Among them, a second connecting plate 73 is also arranged at one end of the third reinforcing longitudinal beam 72 close to the first cross beam 70, and the second connecting plate 73 is connected to the first cross beam 70 by overlapping. When a collision occurs, the impact transmitted from the front can be transmitted to the first cross beam 70 through each third reinforcing longitudinal beam 72, and then transmitted to the first longitudinal beam 10 and the second longitudinal beam 20 through the first cross beam 70, so that the collision force can be greatly reduced, the structural integrity of the entire floor assembly is improved, and the passenger compartment and passengers are protected.

[0083] In some of the embodiments of this application, Figure 5 and Figure 6 As shown, the floor assembly includes a third cross beam 56 and a fourth cross beam 57, both of which are located in the first cavity, and the same side of the third cross beam 56 and the fourth cross beam 57 are attached to the first floor 50, and the third cross beam 56 and the fourth cross beam 57 are connected to the first longitudinal beam 10 and the second longitudinal beam 20.

[0084] It is understandable that the third cross beam 56 and the fourth cross beam 57 both play a role in transmitting impact, and are also beneficial to improving the shape stability of the first cavity. The third cross beam 56 and the fourth cross beam 57 are both in contact with the first floor 50, and can help the first floor 50 to play a supporting role.

[0085] In the embodiment of the present application, the longitudinal sections of the third cross beam 56 and the fourth cross beam 57 are both in the shape of a "J". The openings of the third cross beam 56 and the fourth cross beam 57 face the first floor 50 and are welded to the first floor 50. This can increase the lateral stiffness of the floor assembly and enhance the deformation resistance of the vehicle in a side collision.

[0086] In the embodiment of the present application, the third cross beam 56 and the fourth cross beam 57 are connected by a connecting reinforcement plate 58 to improve the stability of both.

[0087] In some of the embodiments of this application, Figure 1 and Figure 2 As shown, one side of the second cross beam 80 is attached to the second floor 60 , and the second cross beam 80 and the first reinforcing cross beam 64 are respectively located on two opposite sides of the second floor 60 .

[0088] It is understandable that the first reinforcing cross beam 64 mainly supports the second floor 60 and transmits impact, while the second cross beam 80 can support the weight of the cargo and seats from the vehicle body with the assistance of the second floor 60, which is beneficial to improve the supporting effect.

[0089] In some of the embodiments of this application, Figure 1As shown, the floor assembly includes a first door sill 30 , and the first door sill 30 is attached to the first longitudinal beam 10 and connected to the first longitudinal beam 10 .

[0090] It is understandable that the first door sill 30 is helpful to further mitigate the impact and transfer the impact to the first longitudinal beam 10 , while covering the outer side of the first longitudinal beam 10 to provide protection for the first longitudinal beam 10 .

[0091] In the embodiments of the present application, Figure 4 As shown, the longitudinal section of the first door sill 30 may be in a "J" shape, with its opening facing the first longitudinal beam 10 and fitted on the first longitudinal beam 10. The two sides of the longitudinal section are respectively connected to the first floor 50 and other parts of the vehicle body, so as to achieve the installation of the floor assembly. The bottom of the longitudinal section is fitted and welded to the first flange surface 113 of the first longitudinal beam 10. One end of the first door sill 30 has a door sill end 312, which can be welded to the parts located in the front to achieve the installation of the floor assembly. The fourth flange surface of the first door sill 30 is fitted and welded to the second flange surface 116 of the first longitudinal beam 10. When the first longitudinal beam 10 is impacted, the impact can be transmitted to the first floor 50 through the first door sill 30, and to other parts of the vehicle body through the two sides.

[0092] In the embodiment of the present application, the floor assembly may further include a second door sill, which is symmetrically arranged with the first door sill 30 on two opposite sides of the first longitudinal beam 10 .

[0093] In the embodiment of the present application, the structure of the second threshold is symmetrical to the structure of the first threshold 30 .

[0094] In the embodiment of the present application, the first floor 50 includes a first sub-floor 53, a second sub-floor 54 and a third sub-floor 55. The side edges of the first sub-floor 53 and the second sub-floor 54 are connected to the side edges of the third sub-floor 55, and the third cross beam 56 and the fourth cross beam 57 are both located on the third sub-floor 55.

[0095] In the embodiment of the present application, one side of the first sub-floor 53 is connected to the first threshold 30 via the fourth flange surface 531 , and the second sub-floor 54 is connected to the second threshold via the fifth flange surface.

[0096] In the embodiment of the present application, the first sub-floor 53 may also be connected to the first longitudinal beam 10 by welding through the sixth flange surface, and the second sub-floor 54 may be connected to the second longitudinal beam 20 by welding through the seventh flange surface.

[0097] In the embodiment of the present application, the third sub-floor 55 is arranged with fifth reinforcing ribs 551 , and the fifth reinforcing ribs 551 can improve the structural rigidity and mode of the third sub-floor 55 .

[0098] In the embodiment of the present application, the third sub-floor 55 is arranged with a fuel tank viewing window 553 .

[0099] A second aspect of the present application provides a car, which includes a floor assembly according to the above technical solution.

[0100] It can be understood that, due to the adoption of the floor assembly of the above embodiment, the automobile of the present application has the same technical effects as the above embodiment, which will not be described in detail here.

[0101] In the embodiment of the present application, the car may be an electric car, a fuel car or a hybrid car.

[0102] In the present application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance. The term "plurality" refers to two or more than two, unless otherwise clearly defined.

[0103] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the present application disclosed herein. The present application is intended to cover any variations, uses or adaptations of the present application, which follow the general principles of the present application and include common knowledge or customary techniques in the art that are not disclosed in the present application. The specification and examples are intended to be exemplary only.

[0104] It should be understood that the present application is not limited to the precise structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A floor assembly, characterized in that: The floor assembly comprises a first longitudinal beam (10), a second longitudinal beam (20), a first cross beam (70), a second cross beam (80), a first reinforcing cross beam (64), a first reinforcing longitudinal beam (65), a second reinforcing longitudinal beam (67), a first floor panel (50) and a second floor panel (60), wherein: The first longitudinal beam (10) and the second longitudinal beam (20) are arranged side by side along a first direction; The second cross beam (80), the first reinforcing cross beam (64), and the second reinforcing cross beam (66) are all connected to the first longitudinal beam (10) and the second longitudinal beam (20); The first cross beam (70), the first longitudinal beam (10), the second cross beam (80) and the second longitudinal beam (20) form a first cavity, the first floor (50) covers the first cavity, the second cross beam (80), the first longitudinal beam (10) and the second longitudinal beam (20) form a second cavity, and the second floor (60) covers the second cavity; One end of the first reinforcing longitudinal beam (65) and one end of the second reinforcing longitudinal beam (67) are both connected to the first reinforcing cross beam (64), and the other end of the first reinforcing longitudinal beam (65) and the other end of the second reinforcing longitudinal beam (67) extend to a side of the second floor (60) away from the first cross beam (70).

2. The floor assembly according to claim 1, characterized in that: The same side of the first reinforcing cross beam (64), the first reinforcing longitudinal beam (65) and the second reinforcing longitudinal beam (67) is attached to and connected to the second floor (60).

3. The floor assembly according to claim 1, characterized in that: The floor assembly includes a second reinforcing cross beam (66), wherein the second reinforcing cross beam (66) is located between the first reinforcing longitudinal beam (65) and the second reinforcing longitudinal beam (67), and connects the first reinforcing longitudinal beam (65) and the second reinforcing longitudinal beam (67).

4. The floor assembly according to claim 3, characterized in that: The first reinforcing longitudinal beam (65) and the second reinforcing longitudinal beam (67) intersect with a horizontal plane.

5. The floor assembly according to claim 1, characterized in that: The first longitudinal beam (10) comprises a first body (11), an extension section (12) and a connecting section (13); the first body (11) and the extension section (12) are connected and extend along the first direction; the connecting section (13) is located on one side of the first body (11) and connects the first floor (50) and the first body (11) and connects the second floor (60) and the first body (11).

6. The floor assembly according to claim 1, characterized in that: The floor assembly comprises a plurality of third reinforcing longitudinal beams (72), the first ends of the plurality of third reinforcing longitudinal beams (72) are connected to the first cross beam (70), the plurality of third reinforcing longitudinal beams (72) are arranged at intervals along the first direction, and the second ends of the plurality of third reinforcing longitudinal beams (72) extend in a direction away from the first floor (50).

7. The floor assembly according to claim 1, characterized in that: The floor assembly comprises a third cross beam (56) and a fourth cross beam (57), wherein the third cross beam (56) and the fourth cross beam (57) are both located in the first cavity, the third cross beam (56) and the fourth cross beam (57) are both attached to the first floor (50) on the same side, and the third cross beam (56) and the fourth cross beam (57) are both connected to the first longitudinal beam (10) and the second longitudinal beam (20).

8. The floor assembly according to claim 1, characterized in that: One side of the second cross beam (80) is in contact with the second floor (60), and the second cross beam (80) and the first reinforcing cross beam (64) are respectively located on two opposite sides of the second floor (60).

9. The floor assembly according to claim 1, characterized in that: The floor assembly comprises a first door sill (30), wherein the first door sill (30) is attached to the first longitudinal beam (10) and connected to the first longitudinal beam (10).

10. An automobile, characterized in that: The automobile comprises the floor assembly according to any one of claims 1 to 9.

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