Front floor structure and vehicle

Abstract

The invention discloses a front floor structure and a vehicle, and belongs to the technical field of vehicle bodies, the front floor structure comprises a floor assembly and a frame assembly, the floor assembly comprises a panel and two threshold beams, the two threshold beams are connected to the two opposite sides of the panel in the first direction, and the frame assembly comprises two reinforcing beams oppositely arranged in the first direction; the reinforcing beams are connected to the panel and the threshold beam and comprise first beams, the two oppositely-arranged first beams have a beam spacing in the first direction, the beam spacing gradually changes in the second direction, and the second direction intersects with the first direction; due to the fact that the distance between the beams is gradually changed in the second direction, the force transmission performance of the reinforcing beams during vehicle collision can be improved, and therefore the force transmission path of the frame assembly is smoother.

Description

Technical Field

[0001] The present application relates to the technical field of vehicle bodies, and in particular to a front floor structure and a vehicle. Background Art

[0002] The front floor structure of a vehicle is usually composed of a floor assembly and a frame assembly. The frame assembly in the related art adopts a rectangular structure, that is, the two reinforcing beams are straight beams extending along the length of the door sill beam, which leads to poor force transmission performance of the reinforcing beams during vehicle collision and also makes the force transmission path of the frame assembly not smooth enough. Summary of the Invention

[0003] One of the purposes of the embodiments of the present application is to provide a front floor structure that can improve the force transmission performance of the reinforcement beam during a vehicle collision, thereby making the force transmission path of the frame assembly smoother, so as to at least partially solve the above-mentioned technical problems.

[0004] Another object of embodiments of the present application is to provide a vehicle including a front floor structure.

[0005] In order to achieve the above object, according to a first aspect of the present application, a front floor structure is provided, comprising:

[0006] A floor assembly includes a panel and two sill beams connected to opposite sides of the panel along a first direction;

[0007] A frame assembly includes two reinforcing beams disposed opposite to each other along a first direction, the reinforcing beams being connected to the panel and the sill beam;

[0008] The reinforcing beam includes a first beam, and two first beams arranged opposite to each other have a beam spacing along a first direction. The beam spacing gradually changes along a second direction, and the second direction intersects with the first direction.

[0009] Optionally, the reinforcing beam further includes a second beam connected to the first beam, the extension direction of the second beam is parallel to the second direction, at least a portion of the first beam is connected to the panel, the second beam is connected to the threshold beam, and the first beam is located between the two opposite second beams.

[0010] Optionally, the threshold beam has a plurality of threshold cavities arranged along the first direction, the reinforcement beam has a first connecting wall connected to the threshold beam, and both sides of the first connecting wall along the second direction are respectively located at the tops of different threshold cavities.

[0011] Optionally, the reinforcing beam has a first connecting wall, a first force transmission wall and a second force transmission wall, the first connecting wall, the first force transmission wall and the second force transmission wall are arranged along the first direction, the distance between the first connecting wall and the threshold beam along the third direction is smaller than the distance between the first force transmission wall and the threshold beam along the third direction, the distance between the first force transmission wall and the threshold beam along the third direction is smaller than the distance between the second force transmission wall and the threshold beam along the third direction, and the third direction is perpendicular to the first direction and the second direction.

[0012] Optionally, the frame assembly also includes a frame space formed between the two reinforcing beams and a first cross beam and a second cross beam connected to the two reinforcing beams, the frame space having a first space located on the side of the first cross beam away from the second cross beam, a second space located between the first cross beam and the second cross beam, and a third space located on the side of the second cross beam away from the first cross beam, the first space having a first size along the second direction, the second space having a second size along the second direction, and the third space having a third size along the second direction; the second size is larger than the first size, and / or the second size is larger than the third size.

[0013] Optionally, the sum of the first size and the third size is not greater than the second size.

[0014] Optionally, the reinforcement beam has a reinforcement cavity and an opening exposing the reinforcement cavity, and the floor assembly is shielded by the opening.

[0015] Optionally, the frame assembly further includes a first crossbeam and a second crossbeam, the dimension of the first crossbeam along the first direction being smaller than the dimension of the second crossbeam along the first direction, at least one of the first crossbeam and the second crossbeam having a first step wall and a second step wall, the first step wall and the second step wall being arranged along the first direction, and the distance between the first step wall and the panel along the third direction being smaller than the distance between the second step wall and the panel along the third direction.

[0016] Optionally, the first cross beam has a first beam cavity, the second cross beam has a second beam cavity, the floor assembly has a floor cavity located between the two door sill beams, the first beam cavity and the second beam cavity are located on the same side of the panel, and the floor cavity is located on the opposite side of the panel.

[0017] According to a second aspect of the present application, a vehicle is provided, comprising the above front floor structure.

[0018] In the front floor structure of the embodiment of the present application, the two first beams arranged opposite to each other have a beam spacing along the first direction. Since the beam spacing gradually changes along the second direction, the force transmission performance of the reinforcing beam during a vehicle collision can be improved, thereby making the force transmission path of the frame assembly smoother. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] To more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present application. Those skilled in the art can also derive other drawings based on these drawings without inventive effort.

[0020] In order to more completely understand the present application and its beneficial effects, the following description will be given in conjunction with the accompanying drawings, wherein the same drawing numbers represent the same parts in the following description.

[0021] Figure 1 is a schematic diagram of the overall structure of the front floor structure in an exemplary embodiment of the present disclosure;

[0022] Figure 2 yes Figure 1 Top view of the center-front floor structure;

[0023] Figure 3 yes Figure 2 Cross-sectional view at AA in the middle;

[0024] Figure 4 yes Figure 2 Cross-sectional view at the middle BB;

[0025] Figure 5 yes Figure 2 Cross-sectional view at CC;

[0026] Figure 6 yes Figure 1 Top view of the center-front floor structure;

[0027] Figure 7 is a schematic structural diagram of a reinforcement beam in an exemplary embodiment of the present disclosure;

[0028] Figure 8 is a schematic diagram of the overall structure of a frame assembly in an exemplary embodiment of the present disclosure;

[0029] Figure 9 yes Figure 1 Exploded diagram of the center-front floor structure;

[0030] Description of reference numerals:

[0031] 1. Floor assembly; 11. Panel; 12. Sill beam; 121. Sill cavity; 121a. First sill cavity; 121b. Second sill cavity; 121c. Third sill cavity; 122. Reinforcement rib; 13. Floor cavity;

[0032] 2. Frame assembly; 21. Reinforcement beam; 211. First beam; 212. Second beam; 213. First connecting wall; 214. Second connecting wall; 215. First force-transmitting wall; 216. Second force-transmitting wall; 217. Docking wall; 218. Reinforcement cavity; 219. Opening; 2111. First closing plate; 2112. Second closing plate; 22. Frame space; 221. First space; 222. Second space; 223. Third space; 23. First crossbeam; 231. First beam cavity; 232. First groove; 233. First crossbar; 234. First connecting member; 24. Second crossbeam; 241. First step wall; 242. Second step wall; 243. Third step wall; 244. Second beam cavity; 245. Second groove; 246. Second crossbar; 247. Second connecting member;

[0033] X, first direction; Y, second direction; Z, third direction; S, beam spacing; L1, first dimension; L2, second dimension; L3, third dimension; D1, first distance; D2, second distance; D3, third distance. DETAILED DESCRIPTION

[0034] 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 embodiments described are only 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 those skilled in the art without creative work are within the scope of protection of the present application.

[0035] It should be understood that terms such as “having”, “including” and “comprising” used herein do not preclude the existence or addition of one or more other elements or combinations thereof.

[0036] According to the first aspect of this application, reference Figure 1 As shown, the present application provides a front floor structure including a floor assembly 1 and a frame assembly 2 .

[0037] In this embodiment, after the floor assembly 1 and the frame assembly 2 are connected to each other, the overall rigidity of the front floor structure can be improved.

[0038] In some embodiments, the floor assembly 1 includes a panel 11 and two sill beams 12 . The two sill beams 12 are connected to opposite sides of the panel 11 along a first direction X.

[0039] In some embodiments, the two sill beams 12 have the same structure and are symmetrically arranged on both sides of the panel 11 (eg, on both sides in the left and right directions of the vehicle), thereby simplifying the structure of the floor assembly 1 and facilitating the manufacture of the floor assembly 1 .

[0040] In some embodiments, the two sill beams 12 adopt different structures and are respectively arranged on both sides of the panel 11 (for example, on both sides of the left and right directions of the vehicle); it can be understood that the two sill beams 12 adopt different structures as long as their connection method can achieve the purpose of this application.

[0041] For example, the first direction X may be the left-right direction of the vehicle.

[0042] In some embodiments, the reference Figure 2 As shown, the frame assembly 2 includes two reinforcing beams 21 arranged opposite to each other along the first direction X.

[0043] In some embodiments, the two reinforcing beams 21 have the same structure and are symmetrically arranged along the first direction X, thereby simplifying the structure of the frame assembly 2 and facilitating the manufacture of the frame assembly 2 .

[0044] In some embodiments, the two reinforcing beams 21 adopt the same structure and are respectively arranged along the first direction X; it is understandable that the two reinforcing beams 21 adopt different structures as long as their connection method can achieve the purpose of this application.

[0045] In some embodiments, the reinforcement beam 21 is connected to the panel 11 and the rocker beam 12 .

[0046] In this embodiment, the reinforcement beam 21 is connected to the panel 11 and the rocker beam 12 . When the vehicle collides (eg, a side collision), the reinforcement beam 21 can transmit force to the panel 11 and the rocker beam 12 .

[0047] In this embodiment, the reinforcement beam 21 is connected to both the panel 11 and the door sill beam 12 , which can improve the rigidity and structural strength of the floor assembly 1 .

[0048] In some embodiments, the reinforcement beam 21 includes a first beam 211 .

[0049] In this embodiment, each reinforcement beam 21 includes a first beam 211 of the same structure, thereby simplifying the structure of the frame assembly 2 .

[0050] In some embodiments, continue with reference to Figure 2 As shown, the two first beams 211 arranged opposite to each other have a beam spacing S along the first direction X.

[0051] In this embodiment, the two first beams 211 are disposed opposite to each other along the first direction X (eg, symmetrically), and the two first beams 211 are disposed along the first direction X at intervals.

[0052] In some embodiments, the beam spacing S gradually changes along the second direction Y.

[0053] In this embodiment, Figure 2 , in the second direction Y, the beam spacing S gradually changes. The beam spacing S gradually changes between a minimum value of the beam spacing S and a maximum value of the beam spacing S.

[0054] In some embodiments, the beam spacing S gradually increases, for example, changes from a minimum value of the beam spacing S to a maximum value of the beam spacing S.

[0055] In some embodiments, the beam spacing S gradually decreases, for example, changes from a maximum beam spacing S to a minimum beam spacing S.

[0056] For example, the minimum value of the beam spacing S may be between 1000 mm and 1020 mm, such as 1000 mm, 1005 mm, 1010 mm, 1015 mm, and 1020 mm. The maximum value of the beam spacing S may be between 1400 mm and 1450 mm, such as 1400 mm, 1410 mm, 1420 mm, 1430 mm, 1440 mm, and 1450 mm.

[0057] In this embodiment, the gradual change may be a linear change, such as a proportional change (which may be a linear function), and in this case the first beam 211 is a straight structure.

[0058] In this embodiment, the gradual change may also be a nonlinear change, such as a change in unequal proportions (which may be a quadratic function), and in this case the first beam 211 is an arc-shaped structure, as long as the first beam 211 is also tilted relative to the door sill beam 12 .

[0059] The first beam 211 is tilted relative to the sill beam 12 , which means that the first beam 211 and the sill beam 12 are tilted between their projections on a horizontal plane (ie, the plane where the first direction X and the second direction Y are located).

[0060] In some embodiments, the second direction Y intersects the first direction X.

[0061] In this embodiment, the second direction Y is arranged at a certain angle to the first direction X, that is, the angle between the second direction Y and the first direction X is not equal to 0° and 180°.

[0062] Exemplarily, the second direction Y is perpendicular to the first direction X. The second direction Y may be a front-rear direction of the vehicle.

[0063] The two opposing first beams 211 have a beam spacing S along the first direction X. Because the beam spacing S gradually changes along the second direction Y, the first beams 211 are arranged at an angle relative to the sill beam 12. Compared to a solution in which the first beams 211 are parallel to the sill beam 12 (i.e., the beam spacing S remains constant along the second direction Y), this solution improves the force transmission performance of the reinforcement beam 21 during a vehicle collision, thereby making the force transmission path of the frame assembly 2 smoother.

[0064] Exemplarily, the projection of at least a portion of the reinforcing beam 21 (e.g., the first beam 211) in the horizontal plane is arc-shaped (e.g., circular arc-shaped), so that the reinforcing beam 21 has better force transmission performance during a vehicle collision and the force transmission path of the frame assembly 2 is smoother.

[0065] In some embodiments, the reinforcement beam 21 further includes a second beam 212 connected to the first beam 211 .

[0066] In this embodiment, each reinforcement beam 21 includes a second beam 212 of the same structure, thereby simplifying the structure of the frame assembly 2. In addition, each reinforcement beam 21 is composed only of the first beam 211 and the second beam 212, which can further simplify the structure of the frame assembly 2.

[0067] In some embodiments, the extension direction of the second beam 212 is parallel to the second direction Y.

[0068] In this embodiment, the two second beams 212 are spaced apart along the first direction X, and the spacing between the two second beams 212 in the first direction X remains unchanged along the second direction Y, that is, the two second beams 212 are symmetrically arranged along the first direction X.

[0069] Illustratively, the second beam 212 adopts a straight structure, and the extending direction of the second beam 212 is parallel to the extending direction of the door sill beam 12 .

[0070] In this embodiment, the two reinforcing beams 21 are symmetrically arranged along the first direction X, so that the frame assembly 2 forms an embracing structure. The embracing structure means that from a top view, it is like two hands embracing inwards (such as Figure 2 ) or two hands embracing outwards can effectively improve the structural strength of the frame assembly 2.

[0071] In some embodiments, at least a portion of the first beam 211 is connected to the panel 11 , and the second beam 212 is connected to the sill beam 12 .

[0072] In this embodiment, the first beam 211 can be connected to the top of both the panel 11 and the sill beam 12, thereby increasing the rigidity of the floor assembly 1. The second beam 212 can be connected to the top of the sill beam 12, or to the top of the sill beam 12 and the panel 11, thereby preventing the second beam 212 from protruding outside the floor assembly 1.

[0073] In some embodiments, the first beam 211 is located between two opposite second beams 212.

[0074] In this embodiment, the first beam 211 is located inside the second beam 212, that is, the first beam 211 is inclined from the side connected to the second beam 212 towards the space between the two second beams 212 (for example, bent towards the space between the two second beams 212 to form an arc). Compared with the scheme where the first beam 211 is located outside the second beam 212, this scheme can prevent the first beam 211 from encroaching on the outside of the vehicle, and the overlapping amount between the second beam 212 and the sill beam 12 (for example, the overlapping amount in the up and down direction) will be larger, and the structural performance of the frame assembly 2 is better.

[0075] In some other embodiments, the second beam 212 is connected to the panel 11, and the first beam 211 is located outside the second beam 212, that is, the first beam 211 is inclined from the side connected to the second beam 212 towards the outside of the two second beams 212 (for example, bent towards the outside of the two second beams 212 to form an arc).

[0076] Exemplarily, the first beam 211 is connected to the front end of the second beam 212. One end of the first beam 211 connected to the second beam 212 is the rear side, and the side of the first beam 211 facing away from the second beam 212 is the front side. As Figure 2 , in the direction from the rear to the front, the beam spacing S gradually decreases, and at this time, the frame assembly 2 is like two hands embracing inward.

[0077] In some other embodiments, in the direction from the rear to the front, if the beam spacing S gradually increases, at this time, the frame assembly 2 is like two hands embracing outward.

[0078] In some embodiments, with reference to Figure 2 , Figure 3 , Figure 4 and Figure 5 shown, the sill beam 12 has a plurality of sill cavities 121 arranged along the first direction X.

[0079] In this embodiment, the sill cavities 121 are separated from each other, for example, separated by the reinforcing ribs 122.

[0080] Exemplarily, the sill beam 12 can adopt a multi-cavity extruded aluminum alloy profile, which is manufactured by an extrusion process and has the advantages of light weight, high strength, corrosion resistance, etc. The formed sill beam 12 can have a first sill cavity 121a, a second sill cavity 121b, and a third sill cavity 121c. The adjacent sill cavities 121 are separated by the reinforcing ribs 122 and have a transverse "eye" shape in the cross-sectional view.

[0081] In some embodiments, the reinforcing beam 21 has a first connecting wall 213 connected to the sill beam 12.

[0082] In this embodiment, the reinforcing beam 21 can be made of a hot-formed sheet, and the cross-sectional shape of the reinforcing beam 21 is a "channel" shape. The reinforcing beam 21 further has a second connecting wall 214, and the first connecting wall 213 and the second connecting wall 214 are oppositely arranged on both sides of the reinforcing beam 21.

[0083] In some embodiments, both sides of the first connecting wall 213 along the second direction Y are respectively located at the tops of different sill cavities 121.

[0084] In this embodiment, the reinforcing beam 21 overlaps on the tops of different sill cavities 121 of the sill beam 12 along the second direction Y. Compared with the scheme of "the reinforcing beam 21 overlapping on the top of the same sill cavity 121", in this scheme, the first connecting wall 213 overlaps on different sill cavities 121 of the sill beam 12, and the gradual transition of the energy transfer range can be realized by using different sill cavities 121. The energy transmitted by the reinforcing beam 21 will attenuate after crossing two sill cavities 121 and the reinforcing rib 122 between the two sill cavities 121, ensuring the stability of the connection area between the first connecting wall 213 and the sill beam 12 and reducing the risk of connection failure between the reinforcing beam 21 and the sill beam 12.

[0085] In this embodiment, the first connecting wall 213 is located at the top of at least one sill cavity 121. The first connecting wall 213 may overlap on the top of one sill cavity 121, the tops of two sill cavities 121 or the tops of three sill cavities 121. And / or, the first connecting wall 213 may overlap on the top of one reinforcing rib 122 or the tops of two reinforcing ribs 122.

[0086] Exemplarily, the first connecting wall 213 gradually transitions from the first sill cavity 121a (i.e., the sill cavity 121 on the side of the sill beam 12 facing the outside of the vehicle) to the third sill cavity 121c (i.e., the sill cavity 121 on the side of the sill beam 12 facing the inside of the vehicle) along the second direction Y (for example, the direction from the rear to the front). During the overlapping process, the first connecting wall 213 always overlaps on the top of at least one sill cavity 121.

[0087] Exemplarily, with reference to Figure 2 and Figure 3 as shown, after the first connecting wall 213 is connected to the sill beam 12, it is located at the top of the first sill cavity 121a. The second connecting wall 214 is connected to the panel 11 and is located at the top of the sill beam 12.

[0088] Exemplarily, with reference to Figure 2 and Figure 4 as shown, after the first connecting wall 213 is connected to the sill beam 12, it is located at the tops of the second sill cavity 121b and the third sill cavity 121c. The second connecting wall 214 is connected to the panel 11 and is located at the top of the panel 11.

[0089] Exemplary, with reference to Figure 2 and Figure 5 As shown, the first connecting wall 213 is connected to the threshold beam 12 and is located at the top of the third threshold cavity 121 c . The second connecting wall 214 is connected to the panel 11 and is located at the top of the panel 11 .

[0090] For example, since the material of the sill beam 12 is different from that of the reinforcement beam 21 and the panel 11, bolts, flow drill screws (FDS), or self-piercing rivets (SPR) can be used to connect the sill beam 12 to the reinforcement beam 21 (or between the sill beam 12 and the panel 11). Flow drill screws, due to their threaded contact surface, can generate a larger tightening torque, thereby enhancing the stability of the connection.

[0091] In some embodiments, continue with reference to Figure 2 、 Figure 3 、 Figure 4 and Figure 5 As shown, the reinforcing beam 21 has a first connecting wall 213 , a first force transmitting wall 215 and a second force transmitting wall 216 . The first connecting wall 213 , the first force transmitting wall 215 and the second force transmitting wall 216 are arranged along the first direction X.

[0092] In this embodiment, the first force transmission wall 215 is located on the side of the first connecting wall 213 facing the panel 11, and the second force transmission wall 216 is located on the side of the first force transmission wall 215 facing the panel 11, that is, the first connecting wall 213, the first force transmission wall 215, and the second force transmission wall 216 are arranged from the outside of the vehicle to the inside of the vehicle.

[0093] In some embodiments, the distance between the first connecting wall 213 and the threshold beam 12 along the third direction Z is smaller than the distance between the first force transmission wall 215 and the threshold beam 12 along the third direction Z, and the distance between the first force transmission wall 215 and the threshold beam 12 along the third direction Z is smaller than the distance between the second force transmission wall 216 and the threshold beam 12 along the third direction Z.

[0094] In this embodiment, the first connecting wall 213 and the first force transmission wall 215, as well as the first force transmission wall 215 and the second force transmission wall 216, are connected via abutment walls 217. Consequently, the reinforcing beam 21 has a stepped structure that increases in height toward the vehicle interior along the first direction X, on the side facing the vehicle exterior. In other words, multiple steps are formed in a sequentially increasing direction from the vehicle exterior toward the vehicle interior.

[0095] In some embodiments, the third direction Z is perpendicular to the first direction X and the second direction Y.

[0096] In this embodiment, the third direction Z is perpendicular to the horizontal plane (ie, the plane where the first direction X and the second direction Y are located), that is, the up-down direction or the vertical direction.

[0097] In this embodiment, the collision energy generated during a vehicle collision (e.g., a side collision) is transferred upward sequentially via multiple (e.g., two, three, or more) steps arranged in increasing order on the reinforcement beam 21. This allows for energy transition and buffering, resulting in a smoother transmission of the collision force. Compared to solutions without steps, this provides a greater energy buffer and reduces the impact on the front floor structure.

[0098] In some embodiments, the reference Figure 6 As shown, the frame assembly 2 further includes a frame space 22 formed between the two reinforcing beams 21 and a first cross beam 23 and a second cross beam 24 connected to the two reinforcing beams 21 .

[0099] In this embodiment, with reference to Figure 2 like Figure 6 The two reinforcing beams 21, the first crossbeam 23 and the second crossbeam 24 are combined to form an embracing "well" shaped frame assembly 2. The first crossbeam 23 is connected between the two first beams 211, and the second crossbeam 24 is connected between the two second beams 212.

[0100] In some embodiments, the frame space 22 has a first space 221 located on the side of the first beam 23 away from the second beam 24 , a second space 222 located between the first beam 23 and the second beam 24 , and a third space 223 located on the side of the second beam 24 away from the first beam 23 .

[0101] In this embodiment, the first space 221 is located in front of the first crossbeam 23 and is in a U-shape. The second space 222 is located between the first space 221 and the third space 223 and is in a U-shape. The third space 223 is located behind the second crossbeam 24 and is in an inverted U-shape.

[0102] In some embodiments, the first space 221 has a first size L1 along the second direction Y, the second space 222 has a second size L2 along the second direction Y, and the third space 223 has a third size L3 along the second direction Y.

[0103] In this embodiment, a first distance D1 is defined along the second direction Y between the front end of the reinforcing beam 21 and the centerline of the first crossbeam 23. The first distance D1 is somewhat similar to the first dimension L1. A second distance D2 is defined along the second direction Y between the centerline of the first crossbeam 23 and the centerline of the second crossbeam 24. The second distance D2 is somewhat similar to the second dimension L2. A third distance D3 is defined along the second direction Y between the rear end of the reinforcing beam 21 and the centerline of the second crossbeam 24. The third distance D3 is somewhat similar to the third dimension L3.

[0104] In some embodiments, the second dimension L2 (eg, second distance D2) is greater than the first dimension L1 (eg, first distance D1), and / or the second dimension L2 (eg, second distance D2) is greater than the third dimension L3 (eg, third distance D3).

[0105] In this embodiment, the purpose is to maximize the size of the central second space 222 within the existing boundaries, thereby enhancing the strength of the entire frame assembly 2. Because the second space 222 is located in the center of the entire frame assembly 2, a portion of the edge of the second space 222 is enclosed by the inclined first beam 211, resulting in a partially inclined edge (e.g., a curved edge) in the second space 222. This allows the second space 222 to effectively absorb collision energy and ensure the stability of the frame assembly 2 when subjected to stress.

[0106] In addition, compared with the solution of "the frame assembly 2 only having the second space 222", the frame assembly 2 composed of the first space 221, the second space 222 and the third space 223 has higher strength.

[0107] In this embodiment, the first dimension L1 (e.g., the first distance D1) is equal to the third dimension L3 (e.g., the third distance D3). As a result, the force applied to the frame assembly 2 in the second direction Y (e.g., the front-to-rear direction of the vehicle) is uniform, and the frame assembly 2 is more stable. After the internal circulation is completed, the bearing force inside the second space 222 can be relieved and released in the first space 221 and / or the third space 223. At the same time, the force applied in the first space 221 and / or the third space 223 can also serve as front and rear auxiliary support in the second space 222 and be relieved and released.

[0108] In this embodiment, during a side collision, the collision energy is preferentially absorbed within the second space 222 and then transferred to the first space 221 and / or the third space 223. Furthermore, the inclined first beam 211 (e.g., an arc-shaped first beam 211) can also effectively absorb further energy and facilitate force transmission.

[0109] In this embodiment, in a rear-end collision, the collision energy is preferentially absorbed within the third space 223 and then transferred to the second space 222 and the first space 221. Furthermore, the inclined first beam 211 (e.g., an arc-shaped first beam 211) can also effectively absorb further energy and facilitate force transmission.

[0110] In some embodiments, the sum of the first dimension L1 (eg, first distance D1) and the third dimension L3 (eg, third distance D3) is no greater than the second dimension L2 (eg, second distance D2).

[0111] In this embodiment, the second space 222 serves to receive or transmit energy to the first space 221 and / or the third space 223, with energy preferentially concentrated in the second space 222. Increasing the second dimension L2 can improve the stability of the frame assembly 2 and make the force applied to the frame assembly 2 more uniform.

[0112] In this embodiment, during a side collision or front-to-back collision, second space 222 is located in the middle of frame assembly 2, allowing energy to be transferred in all directions. The inclined first beams 211 (e.g., curved first beams 211) on the left and right sides of second space 222 provide enhanced cushioning for both side and front-to-back collisions, enabling smoother energy transfer within second space 222. Compared to the "rectangular frame assembly 2" approach, this approach offers a smoother energy transfer path, facilitating energy transfer and achieving localized buffering.

[0113] For example, the first distance D1 may be between 280 mm and 300 mm, such as 280 mm, 285 mm, 290 mm, 295 mm, or 300 mm. The second distance D2 may be between 440 mm and 460 mm, such as 440 mm, 445 mm, 450 mm, 455 mm, or 460 mm. The third distance D3 may be between 240 mm and 280 mm, such as 240 mm, 245 mm, 250 mm, 255 mm, 260 mm, 265 mm, 270 mm, 275 mm, or 280 mm.

[0114] In some embodiments, the reference Figure 7 As shown, the reinforcement beam 21 has a reinforcement cavity 218 and an opening 219 exposing the reinforcement cavity 218 .

[0115] In this embodiment, the reinforcing beam 21 is manufactured by an integral molding method, such as stamping, to form a hat-shaped open structure.

[0116] In some embodiments, the floor panel assembly 1 is shielded from the opening 219 .

[0117] In this embodiment, with reference to Figure 3 、 Figure 4 and Figure 5 After the reinforcement beam 21 is connected to the floor assembly 1, the floor assembly 1 is shielded from the opening 219, forming a closed reinforcement cavity 218. This closed reinforcement cavity 218 effectively improves crash performance and smooths the force transmission path of the frame assembly 2. Compared to a solution with an exposed reinforcement cavity 218, the closed reinforcement cavity 218 provides smoother energy transfer.

[0118] In some embodiments, the reference Figure 8 As shown, the reinforcing beam 21 has a first sealing plate 2111 and a second sealing plate 2112. The first sealing plate 2111 and the second sealing plate 2112 are located on both sides of the reinforcing cavity 218 along the second direction Y (for example, the front and back sides), and the first sealing plate 2111 and the second sealing plate 2112 are inclined relative to the horizontal plane.

[0119] In this embodiment, the front and rear ends of the reinforcement cavity 218 are sealed with an inclined (or perpendicular to the horizontal plane) first sealing plate 2111 and a second sealing plate 2112, thereby adding an energy transfer path for the reinforcement beam 21, that is, energy transfer is performed through the first sealing plate 2111 and the second sealing plate 2112.

[0120] In this embodiment, when the reinforcing beam 21 is stamped and formed, the first closing plate 2111 and the second closing plate 2112 can be stamped and formed simultaneously, thereby enhancing the structural strength of the reinforcing beam 21 and reducing the difficulty of manufacturing the reinforcing beam 21.

[0121] In some embodiments, continue with reference to Figure 6 As shown, the dimension of the first beam 23 along the first direction X is smaller than the dimension of the second beam 24 along the first direction X.

[0122] In this embodiment, the first beam 23 is parallel to the second beam 24 , and the first beam 211 is inclined toward between the two second beams 212 , so that the second space 222 between the first beam 23 and the second beam 24 has a conical structure similar to an isosceles trapezoid.

[0123] In some embodiments, continue with reference to Figure 2 and Figure 3 As shown, at least one of the first cross beam 23 and the second cross beam 24 has a first step wall 241 and a second step wall 242 .

[0124] In this embodiment, at least one of the first crossbeam 23 and the second crossbeam 24 further has a third step wall 243 .

[0125] In some embodiments, the first step wall 241 and the second step wall 242 are arranged along the first direction X.

[0126] In this embodiment, the second step wall 242 is located on the side of the first step wall 241 facing the panel 11, and the third step wall 243 is located on the side of the second step wall 242 facing the panel 11, that is, the first step wall 241, the second step wall 242, and the third step wall 243 are arranged from the outside of the vehicle to the inside of the vehicle.

[0127] In some embodiments, the distance between the first step wall 241 and the panel 11 along the third direction Z is smaller than the distance between the second step wall 242 and the panel 11 along the third direction Z.

[0128] In this embodiment, the first step wall 241 and the second step wall 242 form a two-layer step structure, while the first step wall 241, the second step wall 242, and the third step wall 243 form a three-layer step structure.

[0129] In this embodiment, using the second cross member 24 as an example, the collision energy generated during a vehicle collision (e.g., a side collision) is transferred upward sequentially via multiple (e.g., two, three, or more) steps arranged in ascending order on the second cross member 24. This allows for energy transition and buffering, resulting in a smoother transmission of the collision force. Compared to solutions without the steps, this provides a greater energy buffer and reduces the impact on the front floor structure.

[0130] In this embodiment, the stepped structure can be provided on the first crossbeam 23 and / or the second crossbeam 24. Considering that in a side collision, the collision force is first transmitted to the second crossbeam 24, meaning that the second crossbeam 24 receives the force first and thus bears more force, the stepped structure is only provided on the second crossbeam 24, thereby reducing manufacturing costs. Of course, the stepped structure can also be provided on both the first crossbeam 23 and the second crossbeam 24 to improve the collision performance of the front floor structure.

[0131] In some embodiments, the first beam 23 has a first beam cavity 231 .

[0132] In this embodiment, Figure 5 The floor assembly 1 is shielded at the bottom of the first beam cavity 231 and can seal the first beam cavity 231 .

[0133] In some embodiments, the second beam 24 has a second beam cavity 244 .

[0134] In this embodiment, Figure 3 The floor assembly 1 is shielded at the bottom of the second beam cavity 244 and can seal the second beam cavity 244 .

[0135] In some embodiments, the floor assembly 1 has a floor cavity 13 located between two door sills 12 .

[0136] In this embodiment, Figure 3 and Figure 5The floor cavity 13 is a rectangular cavity open downward.

[0137] In some embodiments, the first beam cavity 231 and the second beam cavity 244 are located on the same side of the panel 11 , and the floor cavity 13 is located on the opposite side of the panel 11 .

[0138] In this embodiment, the frame assembly 2 and the floor assembly 1 are positioned relative to each other along the third direction Z. The frame assembly 2 is positioned above the floor assembly 1, forming a two-layer front floor structure. The stacking of the frame assembly 2 and the floor assembly 1 effectively enhances the strength of the front floor structure and improves crashworthiness.

[0139] In this embodiment, energy can be transferred between the threshold cavity 121 and the reinforcement cavity 218. The enclosed reinforcement cavity 218 corresponds vertically to the threshold cavity 121, facilitating energy transfer. The threshold cavity 121 and the reinforcement cavity 218 are opposed along the third direction Z (i.e., vertically corresponding). Energy within the threshold cavity 121 can be transferred secondary through the reinforcement cavity 218 to the first beam cavity 231 and the second beam cavity 244, and then to the entire frame assembly 2. After the reinforcement beam 21 is impacted, the energy is transferred to the reinforcement cavity 218, facilitating the effective transfer of collision energy and making the force transmission path smoother.

[0140] In this embodiment, Figure 3 The second beam cavity 244 opposes the floor cavity 13 along the third direction Z, meaning that the second beam cavity 244 is located on top of the floor cavity 13. The reinforcement cavity 218 and the second beam cavity 244 are located on the same side of the panel 11, while the floor cavity 13 is located on the opposite side of the panel 11. This creates a multi-layered cavity structure, effectively enhancing the strength of the frame assembly 2. During a side impact, lower-level energy is buffered by the floor cavity 13, while upper-level energy is transferred to the reinforcement cavity 218 and the second beam cavity 244 for further buffering.

[0141] In this embodiment, Figure 5 The first beam cavity 231 and the floor cavity 13 are opposite each other along the third direction Z, meaning that the first beam cavity 231 is located on top of the floor cavity 13. The reinforcement cavity 218 and the first beam cavity 231 are located on the same side of the panel 11, while the floor cavity 13 is located on the opposite side of the panel 11. This creates a multi-layered cavity structure, effectively enhancing the strength of the frame assembly 2. During a side impact, lower-level energy is buffered by the floor cavity 13, while upper-level energy is transferred to the reinforcement cavity 218 and the first beam cavity 231 for further buffering.

[0142] In some embodiments, the reference Figure 5 and Figure 8 As shown, the first beam 23 has a first groove 232 protruding toward the first beam cavity 231 .

[0143] In this embodiment, the provision of the first groove 232 facilitates the improvement of the rigidity of the first beam 23, as well as the absorption of energy by the first beam 23 and the energy buffering of the first beam cavity 231. The central portion of the first beam 23 is provided with the first groove 232, which is recessed into the surface, forming a transition path for the force transmission from top to bottom during collision. Compared to a planar boundary, the force transmission path is more tortuous, and this tortuous process results in faster energy attenuation. The provision of the first groove 232 also compresses the first beam cavity 231 in the central portion, thus transforming the first beam cavity 231 into a concave cavity, which allows for better energy absorption within the first beam cavity 231.

[0144] In some embodiments, the reference Figure 3 and Figure 8 As shown, the second cross beam 24 has a second groove 245 protruding toward the second beam cavity 244 .

[0145] In this embodiment, the provision of the second groove 245 helps improve the rigidity of the second beam 24, as well as the energy absorption of the second beam 24 and the energy buffering of the second beam cavity 244. The middle portion of the second beam 24 is provided with the second groove 245, which is recessed into the surface, forming a transition path for the force transmission from top to bottom during collision. Compared to a planar boundary, the force transmission path is more tortuous, and this tortuous process results in faster energy attenuation. The provision of the second groove 245 also compresses the middle portion of the second beam cavity 244, thus transforming the second beam cavity 244 into a concave cavity, which allows for better energy absorption within the second beam cavity 244.

[0146] In some embodiments, the reference Figure 9 As shown, the first crossbeam 23 includes a first crossbar 233 and two first connecting members 234 connecting the first crossbar 233 and the reinforcing beam 21 (such as the first beam 211). The second crossbeam 24 includes a second crossbar 246 and two second connecting members 247 connecting the second crossbar 246 and the reinforcing beam 21 (such as the second beam 212).

[0147] In this embodiment, the first groove 232 is provided on the first crossbar 233 , and the second groove 245 is provided on the second crossbar 246 . The third step wall 243 is provided on the second crossbar 246 , and the first step wall 241 and the second step wall are provided on the second connecting member 247 .

[0148] In this embodiment, the first crossbeam 23 and the second crossbeam 24 are both separately provided, which is convenient for manufacturing and assembly, for example, it is convenient to form the first step wall 241 and the second step wall on the second connecting member 247 .

[0149] For example, the first crossbar 233 and the second crossbar 246 can be structural sheet metal with a "J"-shaped cross-section. The first crossbar 233 and the second crossbar 246 are welded to the upper end of the panel 11 and can be used to mount high-performance components such as seats. The first crossbar 233 and the second crossbar 246 are arranged parallel to each other, forming a double-crossbar frame assembly 2.

[0150] For example, the first and second connectors 234, 247 can be structural sheet metal members with a trumpet-shaped cross section. The first and second connectors 234, 247 are welded to the panel 11, with one end connected to the reinforcing beam 21 and the other end connected to the first and second crossbars 233, 246.

[0151] According to a second aspect of the present application, a vehicle is provided, comprising the above-mentioned front floor structure. The vehicle has all the advantages of the above-mentioned front floor structure, which will not be described in detail in this application.

[0152] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0153] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0154] The embodiments, implementation methods and related technical features of the present application can be combined and replaced with each other without conflict.

[0155] The above are merely preferred embodiments of the present application and do not constitute any form of limitation to the present application. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present application without departing from the content of the technical solution of the present application are still within the scope of the technical solution of the present application.

Claims

1. A front floor structure, characterized in that: include: A floor assembly includes a panel and two sill beams, wherein the two sill beams are connected to opposite sides of the panel along a first direction; a frame assembly comprising two reinforcing beams disposed opposite to each other along a first direction, the reinforcing beams being connected to the panel and the sill beam; The reinforcing beam includes a first beam, and two first beams arranged opposite to each other have a beam spacing along the first direction. The beam spacing gradually changes along a second direction, and the second direction intersects with the first direction.

2. The front floor structure according to claim 1, characterized in that: The reinforcing beam further includes a second beam connected to the first beam, wherein an extension direction of the second beam is parallel to the second direction, at least a portion of the first beam is connected to the panel, the second beam is connected to the sill beam, and the first beam is located between two opposing second beams.

3. The front floor structure according to claim 1, wherein: The threshold beam has a plurality of threshold cavities arranged along the first direction, the reinforcement beam has a first connecting wall connected to the threshold beam, and the first connecting wall is located at the top of different threshold cavities on both sides along the second direction.

4. The front floor structure according to claim 1, wherein: The reinforcing beam has a first connecting wall, a first force transmission wall and a second force transmission wall. The first connecting wall, the first force transmission wall and the second force transmission wall are arranged along the first direction. The distance between the first connecting wall and the threshold beam along the third direction is smaller than the distance between the first force transmission wall and the threshold beam along the third direction. The distance between the first force transmission wall and the threshold beam along the third direction is smaller than the distance between the second force transmission wall and the threshold beam along the third direction. The third direction is perpendicular to the first direction and the second direction.

5. The front floor structure according to claim 1, wherein: The frame assembly also includes a frame space formed between the two reinforcing beams and a first crossbeam and a second crossbeam connected to the two reinforcing beams. The frame space has a first space located on the side of the first crossbeam away from the second crossbeam, a second space located between the first crossbeam and the second crossbeam, and a third space located on the side of the second crossbeam away from the first crossbeam. The first space has a first size along the second direction, the second space has a second size along the second direction, and the third space has a third size along the second direction; the second size is larger than the first size, and / or the second size is larger than the third size.

6. The front floor structure according to claim 5, characterized in that: The sum of the first size and the third size is not greater than the second size.

7. The front floor structure according to claim 1, wherein: The reinforcement beam has a reinforcement cavity and an opening exposing the reinforcement cavity, and the floor assembly is shielded by the opening.

8. The front floor structure according to claim 1, wherein: The frame assembly also includes a first crossbeam and a second crossbeam, the dimension of the first crossbeam along the first direction is smaller than the dimension of the second crossbeam along the first direction, at least one of the first crossbeam and the second crossbeam has a first step wall and a second step wall, the first step wall and the second step wall are arranged along the first direction, and the distance between the first step wall and the panel along the third direction is smaller than the distance between the second step wall and the panel along the third direction.

9. The front floor structure according to claim 8, characterized in that: The first cross beam has a first beam cavity, the second cross beam has a second beam cavity, the floor assembly has a floor cavity located between the two door sill beams, the first beam cavity and the second beam cavity are located on the same side of the panel, and the floor cavity is located on opposite sides of the panel.

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

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