Front floor assembly and vehicle

Abstract

The invention discloses a front floor assembly and a vehicle, and the front floor assembly comprises a front framework assembly, a floor panel, an upper reinforcing part, a lower reinforcing part and an embedded reinforcing part; the floor panel is connected to one side of the front framework assembly; the upper reinforcing piece is located on one side, in the height direction of the vehicle, of the floor panel. The upper reinforcing piece is connected with the floor panel and the front framework assembly, and an upper reinforcing cavity is defined by the upper reinforcing piece and the floor panel and the front framework assembly. The lower reinforcer is positioned on the other side of the floor panel in the height direction of the vehicle and is opposite to the upper reinforcer; the lower reinforcer comprises a lower reinforcer straight section and a lower reinforcer inclined section which are sequentially arranged in the length direction of the vehicle and are arranged at an included angle; the embedded reinforcing piece is contained in the upper reinforcing cavity and connected with the upper reinforcing piece, and the embedded reinforcing piece is arranged opposite to the inclined section of the lower reinforcing piece in the height direction of the vehicle. By adopting the scheme, the front collision performance of the vehicle can be improved.

Description

Technical Field

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

[0002] With the rapid development of new energy vehicles, people are increasingly concerned about driving safety. Frontal collisions are the most common type of accident, making the structural safety design of the front of the vehicle particularly important. Improving the frontal collision performance of the vehicle through effective structural design, and thereby effectively improving the safety performance of the entire vehicle, is a pressing issue. Summary of the Invention

[0003] The present application provides a front floor assembly and a vehicle to improve the collision performance of the front of the vehicle.

[0004] To solve the above technical problems, the first technical solution provided in the present application is: a front floor assembly, comprising a front frame assembly, a floor panel, an upper reinforcement, a lower reinforcement and an embedded reinforcement; the floor panel is connected to one side of the front frame assembly in the longitudinal direction of the vehicle; the upper reinforcement extends along the longitudinal direction of the vehicle and is located on one side of the floor panel in the height direction of the vehicle, the upper reinforcement connects the floor panel and the front frame assembly and together define an upper reinforcement cavity; the lower reinforcement is located on the other side of the floor panel in the height direction of the vehicle and is arranged opposite to the upper reinforcement, the lower reinforcement includes a lower reinforcement straight section and a lower reinforcement inclined section arranged in sequence along the longitudinal direction of the vehicle and arranged at an angle, the lower reinforcement is connected to the front frame assembly via the lower reinforcement inclined section and together define a lower reinforcement cavity, and the lower reinforcement inclined section gradually moves away from the floor panel as it points from the floor panel to the front frame assembly; the embedded reinforcement is received in the upper reinforcement cavity and connected to the upper reinforcement, and the embedded reinforcement is arranged opposite to the lower reinforcement inclined section in the height direction of the vehicle.

[0005] In order to solve the above technical problems, the second technical solution provided in this application is: a vehicle, comprising a front floor assembly of any of the above solutions.

[0006] The beneficial effects of this application are:

[0007] The front floor assembly and the vehicle having the front floor assembly provided by the present application include a front frame assembly, a floor panel, an upper reinforcement, a lower reinforcement and an embedded reinforcement. The upper reinforcement and the lower reinforcement are respectively located on both sides of the floor panel in the height direction of the vehicle. The upper reinforcement and the lower reinforcement can improve the structural strength of the front floor assembly. The upper reinforcement connects the front frame assembly and the floor panel and jointly defines an upper reinforcement cavity. The lower reinforcement connects the front frame assembly and the floor panel and jointly defines a lower reinforcement cavity. The upper reinforcement cavity and the lower reinforcement cavity can absorb collision energy, thereby improving the collision performance of the front floor assembly. In addition, the lower reinforcement has an inclined lower reinforcement section that is arranged at an angle and is roughly parallel to the direction of the front collision force of the vehicle. When the collision force is transmitted from the front frame assembly to the lower reinforcement inclined section, it can be transmitted along the lower reinforcement inclined section. The lower reinforcement inclined section has better load-bearing ability, and the embedded reinforcement is arranged opposite to the lower reinforcement inclined section in the height direction of the vehicle, which can improve the connection strength between the lower reinforcement inclined section and the front frame assembly and reduce the risk of the lower reinforcement inclined section falling off from the front frame assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] In order 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 work, among which:

[0009] Figure 1 is a schematic top view of an exemplary embodiment of a front floor assembly provided by the present application;

[0010] Figure 2 is a bottom view structural diagram of an exemplary embodiment of a front floor assembly provided by the present application;

[0011] Figure 3 is a schematic diagram of the exploded structure of an exemplary embodiment of a front floor assembly provided by the present application;

[0012] Figure 4 yes Figure 1 A partial schematic diagram of the three-dimensional structure of the front floor assembly;

[0013] Figure 5 yes Figure 2 A partial schematic diagram of the three-dimensional structure of the front floor assembly;

[0014] Figure 6 yes Figure 1 A partial schematic diagram of the AA section of the front floor assembly;

[0015] Figure 7yes Figure 3 A schematic diagram of the three-dimensional structure of the floor panel in the front floor assembly;

[0016] Figure 8 yes Figure 7 A schematic diagram of the structure of the floor panel from a top view;

[0017] Figure 9 yes Figure 6 A partial schematic diagram of the center floor panel;

[0018] Figure 10 yes Figure 3 A schematic diagram of the three-dimensional structure of the lower reinforcement member of the front floor assembly;

[0019] Figure 11 yes Figure 10 A schematic top view of the structure of the lower reinforcement member;

[0020] Figure 12 yes Figure 11 Schematic diagram of the FF cross section;

[0021] Figure 13 yes Figure 1 A partial schematic diagram of the BB section of the front floor assembly;

[0022] Figure 14 yes Figure 2 A partial enlarged view of the front floor assembly at the lower reinforcement;

[0023] Figure 15 yes Figure 14 Partial schematic diagram of the CC section;

[0024] Figure 16 yes Figure 3 A schematic diagram of the three-dimensional structure of a reinforcement member embedded in a front floor assembly;

[0025] Figure 17 yes Figure 16 A schematic diagram of a three-dimensional structure of an embedded reinforcement member from another perspective;

[0026] Figure 18 yes Figure 16 A top view of an embedded reinforcement member;

[0027] Figure 19 yes Figure 18 Schematic diagram of DD section embedded in reinforcement;

[0028] Figure 20 yes Figure 18 Schematic diagram of EE section embedded in reinforcement;

[0029] Figure 21 yes Figure 3Fig. 2 is an exploded view of the front floor assembly of Fig. 1, showing the front frame assembly and the lower reinforcement;

[0030] Figure 22 Fig. 3 is a partial enlarged view of Fig. 2; Figure 21

[0031] Figure 23 Fig. 4 is an enlarged view of the second frame assembly reinforcement of Fig. 3. Figure 13

[0032] BRIEF DESCRIPTION OF THE DRAWINGS

[0033] 10 upper reinforcement

[0034] 11 upper reinforcement horizontal section

[0035] 111 upper reinforcement first flat section

[0036] 112 upper reinforcement ramp section

[0037] 113 upper reinforcement second flat section

[0038] 12 upper reinforcement transition section

[0039] 13 upper reinforcement inclined section

[0040] 101 first upper reinforcement section

[0041] 102 second upper reinforcement section

[0042] 1020 upper reinforcement recessed area

[0043] 103 third upper reinforcement section

[0044] 104 upper reinforcement first lapping edge

[0045] 105 upper reinforcement second lapping edge

[0046] 20 embedded reinforcement

[0047] 201 first embedded reinforcement section

[0048] 202 second embedded reinforcement section

[0049] 2020 embedded reinforcement recessed area

[0050] 203 third embedded reinforcement section

[0051] 204 embedded reinforcement lapping edge

[0052] 30 floor panel

[0053] 31 panel root area

[0054] ​​32. Panel reinforcement area

[0055] 320, dividing line

[0056] 321. First straight portion of panel

[0057] 322, the first climbing part of the panel

[0058] 323. Second straight portion of panel

[0059] 324, Panel Second Climbing Section

[0060] 325. The third straight part of the panel

[0061] 40. Lower reinforcement

[0062] 41. Straight section of lower reinforcement

[0063] 411, first straight portion of lower reinforcement

[0064] 412, lower reinforcement climbing part

[0065] 413. Second straight portion of lower reinforcement

[0066] 42. Inclined section of lower reinforcement

[0067] 50. Front frame assembly

[0068] 51. Connection

[0069] 510, connecting bevel

[0070] 511, upper connection

[0071] 512, middle connection

[0072] 513, lower connection

[0073] 514, skeleton assembly reinforcement

[0074] 501, skeleton assembly reinforcement cavity

[0075] 502, Second skeleton assembly reinforcement

[0076] 5021, the first subsection of the second skeleton assembly reinforcement rib

[0077] 5022, the second subsection of the second skeleton assembly reinforcement rib

[0078] 5023, the third subsection of the second skeleton assembly reinforcement

[0079] 503, first skeleton assembly reinforcement

[0080] 89. Upper reinforcement cavity

[0081] 890、dividing line

[0082] 891、upper reinforcing first sub-cavity

[0083] 892、upper reinforcing second sub-cavity

[0084] 893、upper reinforcing third sub-cavity

[0085] 80、first reinforcing cavity

[0086] 81、first reinforcing cavity horizontal section

[0087] 811、upper boundary

[0088] 812、lower boundary

[0089] 82、first reinforcing cavity transition section

[0090] 83、first reinforcing cavity inclined section

[0091] 801、first auxiliary cavity

[0092] 802、second auxiliary cavity

[0093] 90、second reinforcing cavity

[0094] 901、upper boundary

[0095] 100、lower reinforcing cavity

[0096] 1001、lower boundary DETAILED DESCRIPTION

[0097] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0098] Reference to "an embodiment" in this text means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily mutually exclusive of one another. It is expressly understood that the embodiments described herein are merely examples from a multitude of possible embodiments, which can be claimed.

[0099] For the convenience of description, the length direction of the vehicle is denoted as the X direction in the drawings, the width direction of the vehicle is denoted as the Y direction in the drawings, and the height direction of the vehicle is denoted as the Z direction in the drawings.

[0100] This application provides a front floor assembly, please refer to Figures 1 to 6 , Figure 1 is a schematic top view of an exemplary embodiment of a front floor assembly provided in this application. Figure 2 is a bottom view of an exemplary embodiment of a front floor assembly provided by the present application. Figure 3 is a schematic diagram of the exploded structure of an exemplary embodiment of the front floor assembly provided by this application. Figure 4 yes Figure 1 A partial schematic diagram of the three-dimensional structure of the front floor assembly. Figure 5 yes Figure 2 A partial schematic diagram of the three-dimensional structure of the front floor assembly. Figure 6 yes Figure 1 A partial schematic diagram of the AA section of the front floor assembly.

[0101] The front floor assembly includes a front frame assembly 50, a floor panel 30, an upper reinforcement 10, a lower reinforcement 40 and an embedded reinforcement 20. The floor panel 30 is connected to one side of the front frame assembly 50 in the longitudinal direction of the vehicle; the upper reinforcement 10 extends along the longitudinal direction of the vehicle and is located on one side of the floor panel 30 in the height direction of the vehicle. The upper reinforcement 10 connects the floor panel 30 and the front frame assembly 50 and together defines an upper reinforcement cavity 89; the lower reinforcement 40 is located on the other side of the floor panel 30 in the height direction of the vehicle and is arranged opposite to the upper reinforcement 10. The lower reinforcement 40 includes a lower reinforcement straight section 41 and a lower reinforcement inclined section 42 arranged in sequence along the length direction of the vehicle and set at an angle. The lower reinforcement 40 is connected to the front frame assembly 50 through the lower reinforcement inclined section 42 and jointly defines a lower reinforcement cavity 100. The lower reinforcement inclined section 42 gradually moves away from the floor panel 30 in the direction of the front frame assembly 50 from the floor panel 30; the embedded reinforcement 20 is accommodated in the upper reinforcement cavity 89 and connected to the upper reinforcement 10. The embedded reinforcement 20 is arranged opposite to the lower reinforcement inclined section 42 in the height direction of the vehicle.

[0102] The front frame assembly 50 is a frame assembly at the front end of the cabin, and the front frame assembly 50 is the first collision contact portion of the vehicle in the event of a frontal collision. Figure 1 、 Figure 2 as well as Figure 6 The hollow arrow indicates the direction of a frontal collision. For example, the front frame assembly 50 can be a one-piece die-cast component. Multiple reinforcing ribs can be provided within the front frame assembly 50 to form multiple "口"-shaped, open reinforcement cavities to enhance structural strength. The material can be, but is not limited to, magnesium alloy or aluminum alloy. This helps ensure overall vehicle body strength while also contributing to lightweight construction and ease of fabrication.

[0103] The floor panel 30 is a large-area sheet material, exemplarily a hot-formed or aluminum alloy structural reinforcement sheet material. It is positioned on one side of the front frame assembly 50 in the vehicle's longitudinal direction. The two sides of the floor panel 30 in the vehicle's width direction are connected to the rocker rails (not shown), and the front ends of the rocker rails are further connected to the front frame assembly 50 to form a complete force transmission frame. The floor panel 30 serves as the interface between the upper reinforcement 10 and the lower reinforcement 40, serving as a link between the upper and lower parts, integrating the upper reinforcement 10 and the lower reinforcement 40. The floor panel 30 is also used to mount the seat crossbar (not shown). The upper reinforcement 10 can extend from the front frame assembly 50 to the seat crossbar. The upper reinforcement 10 is connected between the front frame assembly 50 and the seat crossbar, forming a criss-cross reinforcement structure on one side of the floor panel 30 in the vehicle's height direction, improving collision performance and structural strength.

[0104] The upper reinforcement 10 and the lower reinforcement 40 are used to reinforce the connection area between the floor panel 30 and the front frame assembly 50. They are located on opposite sides of the floor panel 30 in the vehicle's height direction, forming a vertically interlocking connection. For example, the upper reinforcement 10 and the lower reinforcement 40 can both be thermoformed or aluminum alloy structural reinforcement plates. The upper reinforcement 10 can be connected to the floor panel 30 by, but not limited to, welding, and can be connected to the front frame assembly 50 by, but not limited to, bolting or other mechanical connection methods. The lower reinforcement 40 can be connected to both the floor panel 30 and the front frame assembly 50 by, but not limited to, welding.

[0105] The upper reinforcement 10 and the lower reinforcement 40 are both connected to the front frame assembly 50 and the floor panel 30. Therefore, the overall connection strength formed by the front frame assembly 50, the floor panel 30, the upper reinforcement 10 and the lower reinforcement 40 is high, and the energy of the vehicle's front collision can be transferred from the front frame assembly 50 to the floor panel 30, the upper reinforcement 10 and the lower reinforcement 40, resulting in better force transmission, thereby increasing the collision resistance and structural strength.

[0106] The lower reinforcement 40 includes a lower reinforcement straight section 41 and a lower reinforcement inclined section 42. The lower reinforcement straight section 41 is used to connect to the front frame assembly 50, and the lower reinforcement inclined section 42 is used to connect to the floor panel 30, thereby connecting the lower reinforcement 40 to the front frame assembly 50 and the floor panel 30. In some embodiments, the lower reinforcement straight section 41 is connected only to the floor panel 30; in other embodiments, the lower reinforcement straight section 41 is connected to both the floor panel 30 and the front frame assembly 50. For example, the front frame assembly 50 and the floor panel 30 overlap in the vehicle height direction at the overlapping area, and the lower reinforcement straight section 41 is connected to the overlapping portion and also connects the portion of the floor panel 30 that does not overlap with the front frame assembly 50, thereby achieving a better connection between the lower reinforcement 40, the front frame assembly 50, and the floor panel 30.

[0107] The lower reinforcement inclined section 42 is inclined, and the direction of inclination is specifically from the floor panel 30 to the direction of the front frame assembly 50. The lower reinforcement inclined section 42 gradually moves away from the floor panel 30. Figure 6 As shown, the inclination direction of the lower reinforcement inclined section 42 is substantially aligned with the direction of the vehicle's frontal collision. Therefore, when the collision force is transmitted from the front frame assembly 50 to the lower reinforcement inclined section 42, it can be transmitted along the lower reinforcement inclined section 42, providing better load-bearing performance. The collision force transmitted by the lower reinforcement inclined section 42 is then transmitted to the lower reinforcement straight section 41, and then to the floor panel 30.

[0108] The upper reinforcement 10, the front frame assembly 50, and the floor panel 30 collectively define an upper reinforcement cavity 89. Any collision energy transmitted to the upper reinforcement cavity 89 is absorbed by the upper reinforcement cavity 89. The lower reinforcement 40, the front frame assembly 50, and the floor panel 30 collectively define a lower reinforcement cavity 100. Any collision energy transmitted to the lower reinforcement cavity 100 is absorbed by the lower reinforcement cavity 100. Because the upper reinforcement 10 and the lower reinforcement 40 form a vertically interlocking structure, the upper reinforcement cavity 89 and the lower reinforcement cavity 100 also form a vertically interlocking structure. By absorbing collision energy, the upper reinforcement cavity 89 and the lower reinforcement cavity 100 enhance the front floor assembly's collision resistance and structural strength.

[0109] The embedded reinforcement 20 is used to enhance the structural strength of the upper reinforcement 10, and the embedded reinforcement 20 is arranged opposite to the lower reinforcement inclined section 42 in the height direction of the vehicle, which can enhance the connection strength between the lower reinforcement inclined section 42 and the front frame assembly 50 and reduce the risk of the lower reinforcement inclined section 42 falling off from the front frame assembly 50.

[0110] The front floor assembly of the above solution provided in the embodiment of the present application includes a front frame assembly 50, a floor panel 30, an upper reinforcement 10, a lower reinforcement 40 and an embedded reinforcement 20. The upper reinforcement 10 and the lower reinforcement 40 are respectively located on both sides of the floor panel 30 in the height direction of the vehicle. The upper reinforcement 10 and the lower reinforcement 40 can improve the structural strength of the front floor assembly. The upper reinforcement 10 connects the front frame assembly 50 and the floor panel 30 and jointly defines an upper reinforcement cavity 89. The lower reinforcement 40 connects the front frame assembly 50 and the floor panel 30 and jointly defines a lower reinforcement cavity 100. The upper reinforcement cavity 89 and the lower reinforcement cavity 100 can absorb collision energy, thereby improving the collision performance of the front floor assembly. In addition, the lower reinforcement 40 has an inclined lower reinforcement inclined section 42, which is roughly parallel to the direction of the front collision force of the vehicle. When the collision force is transmitted from the front frame assembly 50 to the lower reinforcement inclined section 42, it can be transmitted along the lower reinforcement inclined section 42. The lower reinforcement inclined section 42 has better load-bearing ability, and the embedded reinforcement 20 is arranged opposite to the lower reinforcement inclined section 42 in the height direction of the vehicle, which can improve the connection strength between the lower reinforcement inclined section 42 and the front frame assembly 50 and reduce the risk of the lower reinforcement inclined section 42 falling off from the front frame assembly 50.

[0111] The connection between the two components involved in this application can be but is not limited to welding and mechanical connection through connecting parts. The mechanical connection can adopt but is not limited to bolt connection, self-piercing riveting (Self-Piercing Rivet: SPR), rotary tapping riveting (Flow Drill Screw: FDS) and other processes.

[0112] The bolt connection process is to pre-open threaded holes on the two parts to be connected, and then screw the bolts into the corresponding threaded holes to achieve a mechanical connection between the two parts; the SPR connection process is a cold riveting process that does not require pre-punching and directly penetrates the plate to achieve the connection of dissimilar materials. It is widely used in fields such as lightweight automotive manufacturing; the FDS connection process refers to the high-speed rotation of the FDS rivet driven by the high-speed rotation of a special tool. At the same time, under the action of axial downward pressure, it melts and penetrates the plate to form a threaded connection between the two layers of plate.

[0113] See again Figure 4 and Figure 6In some embodiments, the upper reinforcement 10 includes an upper reinforcement horizontal section 11 and an upper reinforcement inclined section 13 arranged in sequence along the length direction of the vehicle. The upper reinforcement horizontal section 11 extends along the length direction of the vehicle. The upper reinforcement inclined section 13 is set at an angle relative to the upper reinforcement horizontal section 11, and the inclination direction of the upper reinforcement inclined section 13 is opposite to that of the lower reinforcement inclined section 42; the upper reinforcement inclined section 13 is set perpendicular to the lower reinforcement inclined section 42.

[0114] In this embodiment, the upper reinforcement 10 includes an upper reinforcement horizontal section 11 and an upper reinforcement inclined section 13. The collision energy is diverted when it is transferred from the upper reinforcement horizontal section 11 to the upper reinforcement inclined section 13. Therefore, the collision energy can be attenuated during the diversion process, thereby achieving better collision energy absorption.

[0115] The upper reinforcement inclined section 13 is vertically arranged relative to the lower reinforcement inclined section 42. This design allows the collision energy transmitted from the upper reinforcement inclined section 13 to face the lower reinforcement inclined section 42, achieving the best load-bearing performance and thereby increasing the collision energy.

[0116] In some embodiments, the upper reinforcement 10 also includes an upper reinforcement transition section 12 connected between the upper reinforcement horizontal section 11 and the upper reinforcement inclined section 13. The upper reinforcement transition section 12 extends in an arc shape, and the convex surface of the arc faces the front frame assembly 50. The embedded reinforcement 20 is connected to the upper reinforcement horizontal section 11 and is located in the area of ​​the upper reinforcement horizontal section 11 close to the upper reinforcement inclined section 13.

[0117] Among them, the upper reinforcement 10 includes an upper reinforcement horizontal section 11, an upper reinforcement transition section 12 and an upper reinforcement inclined section 13. The upper reinforcement transition section 12 extends in an arc shape. The arc design can ensure the effective reduction of collision energy. The collision energy can be smoothly transferred from the upper reinforcement horizontal section 11 to the upper reinforcement inclined section 13 through the arc setting of the upper reinforcement transition section 12.

[0118] In this embodiment, the embedded reinforcement 20 is arranged in the area of ​​the upper reinforcement horizontal section 11 near the upper reinforcement inclined section 13. This area can be defined as the upper reinforcement root area. The upper reinforcement root area means that the upper reinforcement 10 corresponds to the portion of the connection area between the front frame assembly 50 and the floor panel 30. The length of the upper reinforcement 10 in this area is significantly less than the entire extended length of the upper reinforcement 10.

[0119] This area is a weak area of ​​the upper reinforcement 11. By only arranging the embedded reinforcement 20 in this area, the structural strength of the upper reinforcement 11 can be improved. In this embodiment, the extension length of the embedded reinforcement 20 in the longitudinal direction of the vehicle is only a small length covering the root area of ​​the upper reinforcement, and does not need to extend to the entire length range of the upper reinforcement 11, which can achieve the effect of reducing costs and weight.

[0120] See also Figure 7 and Figure 8 , Figure 7 yes Figure 3 A schematic diagram of the three-dimensional structure of the floor panel 30 in the front floor assembly, Figure 8 yes Figure 7 The schematic diagram of the top structure of the floor panel 30 shows that the floor panel 30 has a panel root area 31. The panel root area 31 can be understood as the area of ​​the floor panel 30 close to the front frame assembly 50 in the longitudinal direction of the vehicle. The size of this area in the longitudinal direction of the vehicle is significantly smaller than the entire size of the floor panel 30 in the longitudinal direction of the vehicle.

[0121] The upper reinforcement root region is arranged corresponding to the panel root region 31 .

[0122] Continue reading Figure 6 In some embodiments, the upper reinforcement cavity 89 includes a first reinforcement cavity 80 and a second reinforcement cavity 90 arranged along the length direction of the vehicle.

[0123] See again Figure 7 and Figure 8 , and see also Figure 9 , Figure 9 yes Figure 6 A partial schematic diagram of the middle floor panel, the floor panel 30 has a panel reinforcement area 32 corresponding to the upper reinforcement 10, and the floor panel 30 includes a first straight portion 321 and a first climbing portion 322 of the panel located in the panel reinforcement area 32; the first straight portion 321 of the panel is connected to the front frame assembly 50, and the first climbing portion 322 of the panel is located on the side of the first straight portion 321 of the panel away from the front frame assembly 50 in the length direction of the vehicle; along the direction of the floor panel 30 away from the front frame assembly 50, the first climbing portion 322 of the panel gradually approaches the upper reinforcement 10; the second reinforcement cavity 90 and the lower reinforcement cavity 100 are respectively located on both sides of the first climbing portion 322 of the panel in the height direction of the vehicle and are arranged opposite to each other.

[0124] The boundary line between the first reinforcement cavity 80 and the second reinforcement cavity 90 in the longitudinal direction of the vehicle is as follows: Figure 6 The dividing line 890 is shown.

[0125] The concept of the first reinforcement cavity 80 and the second reinforcement cavity 90 can be understood as that, along the length direction of the vehicle, the cavity defined by the upper reinforcement 10, the floor panel 30 and the front frame assembly 50 is the upper reinforcement cavity 89. On one side of the dividing line 890 is the first reinforcement cavity 80, and on the other side is the second reinforcement cavity 90.

[0126] The panel reinforcement area 32 may be understood as the area of ​​the floor panel 30 covered by the upper reinforcement 10 .

[0127] The floor panel 30 includes a first straight portion 321 and a first sloped portion 322 of the panel located in the panel reinforcement area 32. The first reinforcement cavity 80 is located between the upper reinforcement 10 and the first straight portion 321 of the panel, and the second reinforcement cavity 90 is located between the upper reinforcement 10 and the first sloped portion 322 of the panel. Figure 6 The boundary line 320 between the first straight portion 321 of the panel and the first sloped portion 322 of the panel is the boundary line 890 between the first reinforcement cavity 80 and the second reinforcement cavity 90 .

[0128] Since in the length direction of the vehicle, along the direction of the floor panel 30 away from the front frame assembly 50, the first climbing portion 322 of the panel gradually approaches the upper reinforcement 10, the collision energy transmitted by the first reinforcement cavity 80 can collide head-on with the first climbing portion 322 of the panel, and part of the energy can continue to be transmitted to the second reinforcement cavity 90, and the other part of the energy can be smoothly transmitted to the lower reinforcement cavity 100 through the first climbing portion 322 of the panel, so that the lower reinforcement cavity 100 can effectively absorb the collision energy and achieve the "one-to-two" energy transmission effect.

[0129] It can be understood that if the floor panel 30 is not provided with the first climbing portion 322 of the panel, most of the collision energy transmitted by the first reinforcing cavity 80 will be directly transmitted to the second reinforcing cavity 90, resulting in the collision energy that the lower reinforcing cavity 100 can absorb is very limited. However, the present application provides the first climbing portion 322 of the panel, so that the cross-section of the lower reinforcing cavity 100 and the cross-section of the second reinforcing cavity 90 can both partially overlap with the cross-section of the first reinforcing cavity 80, so that the collision energy transmitted by the first reinforcing cavity 80 can be dispersed into the second reinforcing cavity 90 and the lower reinforcing cavity 100 for absorption, resulting in a better energy absorption effect.

[0130] Continue reading Figure 9The floor panel 30 further comprises a second flat portion 323 of the panel within the panel reinforcing region 32, the second flat portion 323 is parallel to the first flat portion 321, the second flat portion 323 of the panel is located on a side of the first ramp portion 322 of the panel away from the first flat portion 321 of the panel in the length direction of the vehicle, and the first ramp portion 322 of the panel and the second flat portion 323 of the panel jointly form a second reinforcing cavity 90 with the upper reinforcing member 10.

[0131] The floor panel 30 further comprises a second ramp portion 324 of the panel and a third flat portion 325 of the panel, the second ramp portion 324 of the panel is located on a side of the second flat portion 323 of the panel away from the first ramp portion 322 of the panel in the length direction of the vehicle, and the third flat portion 325 of the panel is located on a side of the second ramp portion 324 of the panel away from the second flat portion 323 of the panel in the length direction of the vehicle, and the third flat portion 325 of the panel is closer to the upper reinforcing member 10 in the height direction of the vehicle than the second flat portion 323 of the panel, so that the third flat portion 325 of the panel can support the upper reinforcing member 10 in the height direction of the vehicle to improve the strength of the upper reinforcing member 10 and reduce the risk of deformation of the upper reinforcing member 10. It should be noted that since the third flat portion 325 of the panel needs to be attached to the upper reinforcing member 10 above it to support the upper reinforcing member 10, in the width direction of the vehicle, the second ramp portion 324 of the panel and the third flat portion 325 of the panel should not completely cover the entire width of the panel reinforcing region 32, so that the upper reinforcing cavity 89 extending from one end of the upper reinforcing member 10 to the other end can still be formed between the upper reinforcing member 10 and the floor panel 30, that is, in the panel reinforcing region 32, the area on the left and right sides of the second ramp portion 324 of the panel and the third flat portion 325 of the panel can still define the upper reinforcing cavity 89 with the upper reinforcing member 10.

[0132] In some embodiments, referring again to Figure 6 The first reinforcing cavity 80 at least comprises a first reinforcing cavity horizontal section 81 corresponding to the upper reinforcing member horizontal section 11, and the upper boundary 901 of the second reinforcing cavity 90 is higher than the upper boundary 811 of the first reinforcing cavity horizontal section 81.

[0133] As an example, the upper reinforcing member horizontal section 11 comprises an upper reinforcing member first flat portion 111, an upper reinforcing member ramp portion 112 and an upper reinforcing member second flat portion 113 arranged in sequence in the length direction of the vehicle, the upper reinforcing member first flat portion 111 and the upper reinforcing member second flat portion 113 are arranged in the height direction of the vehicle, and the upper reinforcing member first flat portion 111 and the upper reinforcing member second flat portion 113 are connected by the upper reinforcing member ramp portion 112.

[0134] The first reinforcement cavity horizontal section 81 is formed by the portion of the upper reinforcement's first straight portion 111 near the upper reinforcement transition section 12 and the floor panel 30. The upper boundary 811 of the first reinforcement cavity horizontal section 81 is the plane of the upper reinforcement's first straight portion 111. The upper boundary 811 of the first reinforcement cavity horizontal section 81 is the highest point of the first reinforcement cavity horizontal section 81 in the vehicle's height direction.

[0135] The second reinforcement cavity 90 is formed by the portion of the upper reinforcement's first straight portion 111 near the upper reinforcement's ramped portion 112, the upper reinforcement's ramped portion 112, the upper reinforcement's second straight portion 113, and the floor panel 30. The upper boundary 901 of the second reinforcement cavity 90 is the plane where the upper reinforcement's second straight portion 113 lies. The upper boundary 901 of the second reinforcement cavity 90 refers to the highest point of the second reinforcement cavity 90 in the vehicle's height direction. It should be noted that the upper reinforcement's second straight portion 113 can be a flat plate structure, with the upper boundary 901 of the second reinforcement cavity 90 being the lower surface of the upper reinforcement's second straight portion 113 facing the floor panel 30. Alternatively, the upper reinforcement's second straight portion 113 can be a plate-like structure with partially concave and convex portions. The upper boundary 901 of the second reinforcement cavity 90 is the point or points on the lower surface of the upper reinforcement's second straight portion 113 facing the floor panel 30 that are farthest from the floor panel 30.

[0136] In the related technology, the upper boundary 901 of the second reinforced cavity 90 is flush with the upper boundary 811 of the first reinforced cavity horizontal section 81, resulting in the cross-sectional area of ​​the second reinforced cavity 90 being smaller than the first reinforced cavity horizontal section 81. When the collision energy is transferred from the first reinforced cavity horizontal section 81 to the second reinforced cavity 90, the collision energy cannot achieve a good decreasing effect.

[0137] In this embodiment, the upper boundary 901 of the second reinforcing cavity 90 is higher than the upper boundary 811 of the first reinforcing cavity horizontal section 81. Compared with the solution in which the upper boundary 901 of the second reinforcing cavity 90 is flush with the upper boundary 811 of the first reinforcing cavity horizontal section 81, the effect of absorbing collision energy is better, and the structural strength of the upper reinforcement 10 can also be improved.

[0138] In this embodiment, the upper reinforcement horizontal section 11 includes a first straight portion 111 of the upper reinforcement, a climbing portion 112 of the upper reinforcement and a second straight portion 113 of the upper reinforcement, so as to achieve that the upper boundary 901 of the second reinforcement cavity 90 is higher than the upper boundary 811 of the first reinforcement cavity horizontal section 81. In other embodiments, the upper reinforcement horizontal section 11 is not limited to the above structure, as long as it can achieve that the upper boundary 901 of the second reinforcement cavity 90 is higher than the upper boundary 811 of the first reinforcement cavity horizontal section 81.

[0139] In some embodiments, the first reinforcement cavity 80 further includes a corresponding first reinforcement cavity transition section 82 and a corresponding first reinforcement cavity inclined section 83. The first reinforcement cavity inclined section 83, the first reinforcement cavity transition section 82, and the first reinforcement cavity horizontal section 81 together constitute the first reinforcement cavity 80. In this embodiment, the first reinforcement cavity 80 includes the first reinforcement cavity inclined section 83, the first reinforcement cavity transition section 82, and the first reinforcement cavity horizontal section 81. The first reinforcement cavity 80 has a longer extension length, thereby having a better collision energy absorption effect.

[0140] In order to better achieve the connection and fastening between the upper reinforcement 10 and the front frame assembly 50, the upper reinforcement 10 is also provided with an upper reinforcement first overlap edge 104 for fitting the front frame assembly 50 on two side edges in the length direction of the vehicle. The upper reinforcement first overlap edge 104 can be connected and fastened to the front frame assembly 50 through bolts and other connecting parts. The upper reinforcement first overlap edge 104 can ensure effective contact for collision and obstacle avoidance, increase the collision contact area, so that the collision force can be effectively transmitted from the front frame assembly 50 to the upper reinforcement 10.

[0141] In order to strengthen the connection and fastening between the upper reinforcement 10 and the front frame assembly 50, the end of the upper reinforcement inclined section 13 is also connected to the front frame assembly 50 by bolts and other connecting parts. In this way, the upper reinforcement 10 and the front frame assembly 50 can be fastened by multiple bolts to improve the connection strength between the upper reinforcement 10 and the front frame assembly 50, so that the upper reinforcement 10 will not be separated from the front frame assembly 50 under large collision energy, and the remaining collision energy can be effectively transmitted in the direction set by the upper reinforcement 10.

[0142] In order to further increase the firmness of the bolt connection, a wire thread sleeve or a nut sleeve can be embedded in the corresponding threaded hole to improve the tightness of the connection with the bolt.

[0143] In order to better achieve the connection and fastening between the upper reinforcement 10 and the floor panel 30, the upper reinforcement 10 is also provided with a second upper reinforcement overlap edge 105 for fitting the floor panel 30 on both sides in the longitudinal direction of the vehicle. The second upper reinforcement overlap edge 105 can be connected and fastened to the floor panel 30 by welding.

[0144] Continue reading Figure 6 In some embodiments, the lower boundary 1001 of the lower reinforcement cavity 100 is lower than the lower boundary 812 of the first reinforcement cavity horizontal section 81 .

[0145] See also Figures 10 to 12 , Figure 10 yes Figure 3a perspective view of the lower reinforcement 40 of the front floor assembly, Figure 11 is Figure 10 a top view of the lower reinforcement 40, Figure 12 is Figure 11 a schematic view of the F-F cross section. As an example, the lower reinforcement flat section 41 includes a lower reinforcement first flat portion 411, a lower reinforcement ramp portion 412 and a lower reinforcement second flat portion 413, the lower reinforcement first flat portion 411 and the lower reinforcement second flat portion 413 are arranged in a height direction of the vehicle, and the lower reinforcement first flat portion 411 and the lower reinforcement second flat portion 413 are connected by the lower reinforcement ramp portion 412.

[0146] The lower reinforcement cavity 100 is formed by the lower reinforcement ramp portion 412 and the lower reinforcement second flat portion 413 together with the floor panel 30, and the lower reinforcement first flat portion 411 is used to be connected to the front chassis assembly 50. The lower boundary 1001 of the lower reinforcement cavity 100 refers to the lowest part of the lower reinforcement cavity 100 in the height direction of the vehicle, that is, the plane where the lower reinforcement second flat portion 413 is located. It should be noted that the lower reinforcement second flat portion 413 can be a flat plate structure, and the lower boundary 1001 of the lower reinforcement cavity 100 is the upper surface of the lower reinforcement second flat portion 413 facing the floor panel 30; the lower reinforcement second flat portion 413 can also be a locally uneven plate structure, for example, the lower reinforcement second flat portion 413 can be multi-step-shaped to improve the structural strength of the lower reinforcement 40, and effectively improve the crash energy absorption effect, and the lower boundary 1001 of the lower reinforcement cavity 100 is the point or set of points farthest from the floor panel 30 of the lower reinforcement second flat portion 413 facing the upper surface of the floor panel 30.

[0147] The lower boundary 812 of the first reinforcement cavity horizontal section 81 refers to the lowest part of the first reinforcement cavity horizontal section 81 in the height direction of the vehicle, that is, the plane where the panel first flat portion 321 shown in FIG. 6 is located. Figure 9

[0148] In the related art, the lower boundary 1001 of the lower reinforcement cavity 100 is flush with the lower boundary 812 of the first reinforcement cavity horizontal section 81, which results in that the cross-sectional area of the lower reinforcement cavity 100 is significantly smaller than the cross-sectional area of the first reinforcement cavity horizontal section 81, and when the collision energy is transmitted from the first reinforcement cavity horizontal section 81 to the lower reinforcement cavity 100, the collision energy cannot be well reduced.

[0149] ​In this embodiment, the lower boundary 1001 of the lower reinforcement cavity 100 is lower than the lower boundary 812 of the first reinforcement cavity horizontal section 81. Compared with the solution in which the lower boundary 1001 of the lower reinforcement cavity 100 is flush with the lower boundary 812 of the first reinforcement cavity horizontal section 81, the effect of absorbing collision energy is better, and the structural strength of the lower reinforcement 40 can also be improved.

[0150] In this embodiment, the straight section 41 of the lower reinforcement includes a first straight portion 411 of the lower reinforcement, a climbing portion 412 of the lower reinforcement and a second straight portion 413 of the lower reinforcement, so as to achieve that the lower boundary 1001 of the lower reinforcement cavity 100 is lower than the lower boundary 812 of the first reinforcement cavity horizontal section 81. In other embodiments, the straight section 41 of the lower reinforcement is not limited to the above structure, as long as it can achieve that the lower boundary 1001 of the lower reinforcement cavity 100 is lower than the lower boundary 812 of the first reinforcement cavity horizontal section 81.

[0151] In some embodiments, refer again to Figure 1 and Figure 4 , and see also Figures 13 to 15 , Figure 13 yes Figure 1 A partial schematic diagram of the BB section of the front floor assembly. Figure 14 yes Figure 2 A partial enlarged view of the front floor assembly at the lower reinforcement 40, Figure 15 yes Figure 14 A partial schematic diagram of a mid-CC cross section. The upper reinforcement 10 includes a first upper reinforcement 101, a second upper reinforcement 102, and a third upper reinforcement 103, arranged sequentially along the width of the vehicle. A recessed upper reinforcement area 1020 is formed on the surface of the upper reinforcement 10 facing away from the floor panel 30, in the area where the second upper reinforcement 102 is located. This recessed upper reinforcement area 1020 extends from one end of the upper reinforcement 10 to the other along the length of the vehicle.

[0152] Specifically, the upper reinforcement cavity 89 includes an upper reinforcement first sub-cavity 891, an upper reinforcement second sub-cavity 892 and an upper reinforcement third sub-cavity 893 which are connected in sequence along the width direction of the vehicle. The upper reinforcement first sub-cavity 891 is arranged corresponding to the first upper reinforcement part 101, the upper reinforcement second sub-cavity 892 is arranged corresponding to the second upper reinforcement part 102, and the upper reinforcement third sub-cavity 893 corresponds to the third upper reinforcement part 103. Figure 15 The three grey rectangular blocks in represent the upper reinforced first sub-cavity 891, the upper reinforced second sub-cavity 892 and the upper reinforced third sub-cavity 893 respectively.

[0153] In this embodiment, the cross-section of the upper reinforcement 10 is in the shape of a Chinese character "J", and correspondingly, the cross-section of the upper reinforcement cavity 89 is in the shape of a Chinese character "C". The upper reinforcement cavity 89 presents a "high-low-high" layered distribution in the width direction of the vehicle, which is beneficial to energy absorption during the collision process, realizing the "one-to-three" division of the collision energy, with good energy absorption effect and high structural strength.

[0154] In some embodiments, refer again to Figure 13 , and see also Figures 16 to 20 , Figure 16 yes Figure 3 A schematic diagram of the three-dimensional structure of the front floor assembly embedded with the reinforcement 20, Figure 17 yes Figure 16 A schematic three-dimensional structural diagram of another perspective of the embedded reinforcement 20, Figure 18 yes Figure 16 A top view of the embedded reinforcement 20, Figure 19 yes Figure 18 DD cross-sectional view of the embedded reinforcement 20, Figure 20 yes Figure 18 EE cross-sectional schematic diagram of the embedded reinforcement 20.

[0155] The embedded reinforcement 20 includes a first embedded reinforcement portion 201, a second embedded reinforcement portion 202 and a third embedded reinforcement portion 203 arranged in sequence along the width direction of the vehicle. The surface of the embedded reinforcement 20 facing away from the floor panel 30 forms an embedded reinforcement recessed area 2020 in the area where the second embedded reinforcement portion 202 is located. The embedded reinforcement 20 and the upper reinforcement 10 are fixedly connected by welding in the embedded reinforcement recessed area 2020 and the upper reinforcement recessed area 1020. The first embedded reinforcement portion 201 and the first upper reinforcement portion 101 are correspondingly arranged and spaced apart from each other to form a first auxiliary cavity 801. The third embedded reinforcement portion 203 and the third upper reinforcement portion 103 are correspondingly arranged and spaced apart from each other to form a second auxiliary cavity 802.

[0156] In order to improve the connection effect between the embedded reinforcement 20 and the upper reinforcement 10, the first embedded reinforcement part 201 and the first upper reinforcement part 101 can be connected and fastened by connecting parts such as bolts, and the third embedded reinforcement part 203 and the third upper reinforcement part 103 can be connected and fastened by connecting parts such as bolts.

[0157] In this embodiment, the embedded reinforcement 20 does not completely mate with the upper reinforcement 10. Instead, it mates with a portion of the upper reinforcement 10 to achieve a fixed connection, and the remaining portion is separated to form two auxiliary cavities, namely a first auxiliary cavity 801 and a second auxiliary cavity 802. This increases the number of energy-absorbing cavities, thereby improving the collision energy absorption effect, enabling effective energy absorption in the corner area of ​​the upper reinforcement 10, and further accelerating the attenuation of collision energy in the corner area of ​​the upper reinforcement 10. In other embodiments, the embedded reinforcement 20 may completely mate with the upper reinforcement 10.

[0158] In some embodiments, the embedded reinforcement 20 also includes an embedded reinforcement edging 204 arranged along its circumference. The embedded reinforcement edging 204 is located on the side of the first embedded reinforcement portion 201, the second embedded reinforcement portion 202 and the third embedded reinforcement portion 203 facing the floor panel 30 and the front frame assembly 50, so that the embedded reinforcement 20 forms a box-shaped structure. The box-shaped structure allows an energy-absorbing cavity to be formed within the embedded reinforcement 20 to further enhance the collision energy absorption effect.

[0159] Furthermore, since the embedded reinforcement 20 is disposed in the region of the upper reinforcement horizontal section 11 close to the upper reinforcement inclined section 13 , the collision energy is attenuated in this region, and the embedded reinforcement 20 can accelerate the attenuation of the collision energy in this region.

[0160] See again Figure 6 and Figure 13 , and see also Figure 21 and Figure 22 , Figure 21 yes Figure 3 Schematic diagram of the exploded structure of the front frame assembly 50 and the lower reinforcement 40 in the front floor assembly, Figure 22 yes Figure 21 A partial enlarged view shows that in some embodiments, the front skeleton assembly 50 includes a connecting portion 51 for connecting the lower reinforcement 40, and the connecting portion 51 includes an upper connecting portion 511, a middle connecting portion 512, a lower connecting portion 513, and a plurality of skeleton assembly reinforcement ribs 514 connected between the upper connecting portion 511 and the lower connecting portion 513; the middle connecting portion 512 is fitted and fixed to the lower reinforcement inclined section 42, and the upper connecting portion 511, the lower connecting portion 513 and the plurality of skeleton assembly reinforcement ribs 514 are all located on the side of the middle connecting portion 512 away from the lower reinforcement inclined section 42; the plurality of skeleton assembly reinforcement ribs 514 are arranged at intervals along the width direction of the vehicle, and the plurality of skeleton assembly reinforcement ribs 514 are all connected to the upper connecting portion 511, the middle connecting portion 512 and the lower connecting portion 513, so that the connecting portion 51 forms a plurality of skeleton assembly reinforcement cavities 501.

[0161] Among them, the connecting portion 51 is the part of the front frame assembly 50 used to connect the lower reinforcement 40. Specifically, the connecting portion 51 has a connecting bevel 510, and the lower reinforcement inclined section 42 of the lower reinforcement 40 can be fixed to the connecting bevel 510 by welding.

[0162] The connecting portion 51 includes a connecting portion 511, a middle connecting portion 512, a lower connecting portion 513 and a plurality of skeleton assembly reinforcement ribs 514 connected between the upper connecting portion 511 and the lower connecting portion 513, so that the connecting portion 51 forms a plurality of "mouth"-shaped skeleton assembly reinforcement cavities 501 to enhance the structural strength of the connecting portion 51, and the skeleton assembly reinforcement cavity 501 is arranged back to back with the connecting inclined surface 510 to avoid interference between the skeleton assembly reinforcement cavity 501 and the inclined section 42 of the lower reinforcement.

[0163] In the embodiment of the present application, in addition to forming a "mouth"-shaped cavity at the connecting portion 51 of the front frame assembly 50, "mouth"-shaped cavities may also be provided at other locations of the front frame assembly 50 to enhance the overall structural strength of the front frame assembly 50.

[0164] In some embodiments, refer again to Figure 13 The upper reinforcement cavity 89 includes an upper reinforcement first sub-cavity 891, an upper reinforcement second sub-cavity 892 and an upper reinforcement third sub-cavity 893 which are connected in sequence along the width direction of the vehicle. The upper reinforcement first sub-cavity 891 is arranged corresponding to the first upper reinforcement part 101, the upper reinforcement second sub-cavity 892 is arranged corresponding to the second upper reinforcement part 102, and the upper reinforcement third sub-cavity 893 corresponds to the third upper reinforcement part 103; in the height direction of the vehicle, the upper reinforcement first sub-cavity 891, the upper reinforcement second sub-cavity 892 and the upper reinforcement third sub-cavity 893 are respectively arranged corresponding to a skeleton assembly reinforcement rib 514.

[0165] The upper reinforced first sub-cavity 891 , the upper reinforced second sub-cavity 892 and the upper reinforced third sub-cavity 893 refer to the above-mentioned embodiment.

[0166] In an embodiment of the present application, the upper reinforced first sub-cavity 891, the upper reinforced second sub-cavity 892 and the upper reinforced third sub-cavity 893 are respectively provided with a skeleton assembly reinforcement rib 514. The collision energy borne by the upper reinforced first sub-cavity 891, the upper reinforced second sub-cavity 892 and the upper reinforced third sub-cavity 893 can be transmitted by the corresponding skeleton assembly reinforcement rib 514, and the skeleton assembly reinforcement rib 514 can also enhance the structural strength of the upper reinforced first sub-cavity 891, the upper reinforced second sub-cavity 892 and the upper reinforced third sub-cavity 893, thereby reducing the risk of deformation.

[0167] In some embodiments, the plurality of framework assembly stiffeners 514 includes a first framework assembly stiffener 503 and a second framework assembly stiffener 502.

[0168] The first framework assembly stiffener 503 is in a plate-shaped structure extending in the height direction of the vehicle, and is arranged opposite to the upper reinforcing second sub-cavity 892 in the height direction of the vehicle, so as to compensate for the relatively weak structure of the upper reinforcing second sub-cavity 892, thereby improving the energy absorption performance and the structural strength.

[0169] Please refer to Figure 23 , Figure 23 is Figure 13 an enlarged view of the second framework assembly stiffener 502 in The second framework assembly stiffener 502 includes a second framework assembly stiffener first sub-portion 5021, a second framework assembly stiffener second sub-portion 5022 and a second framework assembly stiffener third sub-portion 5023, all in a plate-shaped structure extending in the height direction of the vehicle. One end of the second framework assembly stiffener first sub-portion 5021 is connected to the upper connecting portion 511, and the other end of the second framework assembly stiffener first sub-portion 5021 is connected to one end of the second framework assembly stiffener second sub-portion 5022 and one end of the second framework assembly stiffener third sub-portion 5023. The other end of the second framework assembly stiffener second sub-portion 5022 and the other end of the second framework assembly stiffener third sub-portion 5023 are arranged at intervals and are both connected to the lower connecting portion 513.

[0170] The second framework assembly stiffener 502 is arranged opposite to the upper reinforcing first sub-cavity 891 and / or the upper reinforcing third sub-cavity 893 in the height direction of the vehicle. Through the arrangement of the second framework assembly stiffener first sub-portion 5021, the second framework assembly stiffener second sub-portion 5022 and the second framework assembly stiffener third sub-portion 5023, the force transmission path is divided into two, and the force transmission performance is effectively improved.

[0171] The application also provides a vehicle including the above-mentioned front floor assembly. The specific structure of the front floor assembly is referred to the above-mentioned embodiments. Since the vehicle adopts all the technical solutions of the above-mentioned embodiments, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here. The vehicle can be a fuel automobile, a gas automobile or a new energy automobile, and the new energy automobile can be a pure electric automobile, a hybrid electric automobile or a range extended automobile, etc.

[0172] The terms "first", "second" and "third" in this application are used for descriptive purposes only and should not be understood as indicating the number of technical features indicated. Thus, the features defined as "first", "second" and "third" may explicitly or implicitly include at least one of such features. All directional indications in the embodiments of this application (such as up, down, left, right, front, back...) are only used to explain the relative positional relationship, movement, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0173] The above description is merely an embodiment of the present application and does not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A front floor assembly, characterized in that: include: Front frame assembly (50); A floor panel (30) connected to one side of the front frame assembly (50) in the longitudinal direction of the vehicle; an upper reinforcement member (10) extending along the length direction of the vehicle and located on one side of the floor panel (30) in the height direction of the vehicle, the upper reinforcement member (10) connecting the floor panel (30) and the front frame assembly (50) and jointly defining an upper reinforcement cavity (89); a lower reinforcement (40) located on the other side of the floor panel (30) in the height direction of the vehicle and arranged opposite to the upper reinforcement (10); the lower reinforcement (40) includes a lower reinforcement straight section (41) and a lower reinforcement inclined section (42) arranged in sequence along the length direction of the vehicle and arranged at an angle; the lower reinforcement (40) is connected to the front frame assembly (50) through the lower reinforcement inclined section (42) and is connected to the floor panel (30) through the lower reinforcement straight section (41) to jointly define a lower reinforcement cavity (100); in a direction from the floor panel (30) to the front frame assembly (50), the lower reinforcement inclined section (42) gradually moves away from the floor panel (30); An embedded reinforcement (20) is housed in the upper reinforcement cavity (89) and connected to the upper reinforcement (10). The embedded reinforcement (20) is arranged opposite to the lower reinforcement inclined section (42) in the height direction of the vehicle.

2. The front floor assembly according to claim 1, characterized in that: The upper reinforcement (10) comprises an upper reinforcement horizontal section (11) and an upper reinforcement inclined section (13) sequentially arranged along the length direction of the vehicle; The upper reinforcement horizontal section (11) extends along the longitudinal direction of the vehicle, the upper reinforcement inclined section (13) is arranged at an angle relative to the upper reinforcement horizontal section (11), and the upper reinforcement inclined section (13) and the lower reinforcement inclined section (42) have an inclination direction opposite to each other; The upper reinforcement member inclined section (13) is vertically arranged relative to the lower reinforcement member inclined section (42).

3. The front floor assembly according to claim 2, characterized in that: The upper reinforcement (10) further includes an upper reinforcement transition section (12) connected between the upper reinforcement horizontal section (11) and the upper reinforcement inclined section (13), wherein the upper reinforcement transition section (12) extends in an arc shape, and the convex surface of the arc faces the front frame assembly (50); The embedded reinforcement (20) is connected to the upper reinforcement horizontal section (11) and is located in a region of the upper reinforcement horizontal section (11) close to the upper reinforcement inclined section (13).

4. The front floor assembly according to claim 2 or 3, characterized in that: The upper reinforcement cavity (89) includes a first reinforcement cavity (80) and a second reinforcement cavity (90) arranged along the length direction of the vehicle; The floor panel (30) has a panel reinforcement area (32) corresponding to the upper reinforcement member (10), and the floor panel (30) includes a first straight panel portion (321) and a first sloped panel portion (322) located in the panel reinforcement area (32); The first straight portion (321) of the panel is connected to the front frame assembly (50), and the first climbing portion (322) of the panel is located on a side of the first straight portion (321) of the panel that is away from the front frame assembly (50) in the longitudinal direction of the vehicle; Along the direction in which the floor panel (30) moves away from the front frame assembly (50), the first climbing portion (322) of the panel gradually approaches the upper reinforcement (10); The second reinforcement cavity (90) and the lower reinforcement cavity (100) are respectively located on both sides of the first climbing portion (322) of the panel in the height direction of the vehicle and are arranged opposite to each other.

5. The front floor assembly according to claim 4, characterized in that: The first reinforcement cavity (80) includes at least a first reinforcement cavity horizontal section (81) arranged corresponding to the upper reinforcement member horizontal section (11), the upper boundary of the second reinforcement cavity (90) is higher than the upper boundary of the first reinforcement cavity horizontal section (81), and\or, the lower boundary of the lower reinforcement cavity (100) is lower than the lower boundary of the first reinforcement cavity horizontal section (81).

6. The front floor assembly according to claim 1 or 3, characterized in that: The upper reinforcement (10) includes a first upper reinforcement (101), a second upper reinforcement (102), and a third upper reinforcement (103) sequentially arranged along the width direction of the vehicle. A surface of the upper reinforcement (100) facing away from the floor panel (30) forms an upper reinforcement recessed area (1020) in the area where the second upper reinforcement (102) is located. The upper reinforcement recessed area (1020) extends from one end of the upper reinforcement (10) to the other end along the length direction of the vehicle.

7. The front floor assembly according to claim 6, characterized in that: Along the width direction of the vehicle, the embedded reinforcement (20) includes a first embedded reinforcement portion (201), a second embedded reinforcement portion (202), and a third embedded reinforcement portion (203) arranged in sequence, and a surface of the embedded reinforcement (20) facing away from the floor panel (30) forms an embedded reinforcement recessed area (2020) in the area where the second embedded reinforcement portion (202) is located; The embedded reinforcement (20) and the upper reinforcement (10) are fixedly connected in the embedded reinforcement recessed area (2020) and the upper reinforcement recessed area (1020), the first embedded reinforcement portion (201) and the first upper reinforcement portion (101) are correspondingly arranged and spaced apart from each other to form a first auxiliary cavity (801), and the third embedded reinforcement portion (203) and the third upper reinforcement portion (103) are correspondingly arranged and spaced apart from each other to form a second auxiliary cavity (802).

8. The front floor assembly according to claim 6, characterized in that: The front frame assembly (50) includes a connecting portion (51) for connecting to the lower reinforcement (40), the connecting portion (51) including an upper connecting portion (511), a middle connecting portion (512), a lower connecting portion (513), and a plurality of frame assembly reinforcement ribs (514) connected between the upper connecting portion (511) and the lower connecting portion (513); The middle connecting portion (512) is fitted and fixed to the lower reinforcement inclined section (42); the upper connecting portion (511), the lower connecting portion (513) and the plurality of skeleton assembly reinforcing ribs (514) are all located on a side of the middle connecting portion (512) away from the lower reinforcement inclined section (42); The plurality of skeleton assembly reinforcing ribs (514) are arranged at intervals along the width direction of the vehicle, and the plurality of skeleton assembly reinforcing ribs (514) are all connected to the upper connecting portion (511), the middle connecting portion (512) and the lower connecting portion (513), so that the connecting portion (51) forms a plurality of skeleton assembly reinforcing cavities (501).

9. The front floor assembly according to claim 8, characterized in that: The upper reinforcement cavity (89) comprises an upper reinforcement first sub-cavity (891), an upper reinforcement second sub-cavity (892) and an upper reinforcement third sub-cavity (893) which are sequentially connected along the width direction of the vehicle, the upper reinforcement first sub-cavity (891) being arranged corresponding to the first upper reinforcement portion (101), the upper reinforcement second sub-cavity (892) being arranged corresponding to the second upper reinforcement portion (102), and the upper reinforcement third sub-cavity (893) corresponding to the third upper reinforcement portion (103); In the height direction of the vehicle, the upper reinforced first sub-cavity (891), the upper reinforced second sub-cavity (892), and the upper reinforced third sub-cavity (893) are respectively arranged corresponding to a reinforcement rib (514) of the skeleton assembly.

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

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