Rear floor drive assembly and vehicle

Abstract

This invention discloses a rear floor force transmission assembly and a vehicle. The rear floor force transmission assembly includes two longitudinal beam structures, each comprising a longitudinal beam body and a rear section. The rear end of the longitudinal beam body is connected to the rear section, and the front end of the longitudinal beam body has an adapter for connecting to a sill beam. A seat mounting crossbeam and a rear floor crossbeam are also included, spaced apart along the longitudinal direction between the two longitudinal beam structures. This rear floor force transmission assembly ensures smoother overall force transmission, improves the vehicle's safety performance in frontal, offset, side, and pole impacts, integrates components, reduces the number of parts, lowers development costs, reduces vehicle weight, and increases vehicle range.

Description

Technical Field

[0001] This invention relates to the field of vehicle manufacturing technology, and in particular to a rear floor force transmission assembly and a vehicle having the rear floor force transmission assembly. Background Technology

[0002] The rear floor of a car is an important part of the vehicle, involving collision safety and the transmission of forces throughout the vehicle body. Its structural design and the layout of the horizontal and vertical beams will affect its strength and force transmission effect, which will directly affect the deformation of the passenger compartment during a collision and affect the vehicle's safety performance.

[0003] Most existing vehicle models use steel stamping parts. The X-axis force transmission in the middle of the rear floor is achieved by reinforcing longitudinal beams with thicker sheet metal on the floor sheet. The two sides are also longitudinal beams formed by welding sheet metal together, with hot-formed reinforcements inside to transmit force. The Y-axis force transmission of the rear floor is achieved through three crossbeams: front, middle, and rear. Hot-formed reinforcements are also placed inside the crossbeams to enhance the force transmission effect. The connection structure of the rear floor using steel stamping parts has a large number of parts, a complex structure, and a cumbersome process. It involves welding multiple parts, is heavy, and requires the production of multiple sets of stamping and hot-forming dies. This results in high development costs, a complex development path, and poor force transmission effect, leaving room for improvement. Summary of the Invention

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a rear floor force transmission assembly that can ensure the effectiveness of the force transmission channel and smoother overall force transmission, improve the safety performance of the vehicle in collisions from different directions, integrate parts, reduce the number of components, reduce development costs, reduce vehicle weight, and increase vehicle range.

[0005] According to an embodiment of the present invention, a rear floor force transmission assembly includes: two longitudinal beam structures, each longitudinal beam structure including a longitudinal beam body and a rear section of the longitudinal beam, the rear end of the longitudinal beam body being connected to the rear section of the longitudinal beam, and the front end of the longitudinal beam body being provided with a transition piece for connecting to a sill beam; a seat mounting crossbeam and a rear floor crossbeam, the seat mounting crossbeam and the rear floor crossbeam being spaced apart in the front-rear direction between the two longitudinal beam structures.

[0006] According to the rear floor force transmission assembly of the present invention, by rationally distributing and welding together the two longitudinal beam structures, the seat mounting crossbeam and the rear floor crossbeam, the overall force transmission can be made smoother, which can improve the safety performance of the whole vehicle in frontal collision, oblique collision, side collision and pole collision. The integration of parts reduces the number of components, reduces development costs, reduces vehicle weight and increases vehicle range.

[0007] The rear floor force transmission assembly according to some embodiments of the present invention, wherein there are multiple rear floor cross beams, and all of the multiple rear floor cross beams are located behind the seat mounting cross beam, and the multiple rear floor cross beams are spaced apart in the front-back direction.

[0008] The rear floor force transmission assembly according to some embodiments of the present invention, the multiple rear floor cross beams are respectively a front cross beam, a middle cross beam and a rear cross beam that are sequentially distributed in the front-back direction, the front cross beam and the middle cross beam are both connected between the longitudinal beam bodies of the two longitudinal beam structures, and the rear cross beam is connected between the rear sections of the longitudinal beams of the two longitudinal beam structures.

[0009] The rear floor force transmission assembly according to some embodiments of the present invention, at least one reinforcing longitudinal beam is provided between the front cross beam and the middle cross beam, and the reinforcing longitudinal beam is formed by profile extrusion.

[0010] The rear floor force transmission assembly according to some embodiments of the present invention, there are two reinforcing longitudinal beams, and the two reinforcing longitudinal beams are arranged at intervals in the transverse direction between the front cross beam and the middle cross beam, and the front cross beam, the middle cross beam, the two reinforcing longitudinal beams and the two longitudinal beam bodies are distributed in a "mu" shape.

[0011] The rear floor force transmission assembly according to some embodiments of the present invention, the longitudinal beam body is provided with a supporting flange, the supporting flange protrudes on the inner side surface of the longitudinal beam body, and the end portions of the front cross beam and the middle cross beam are respectively supported on the supporting flange.

[0012] The rear floor force transmission assembly according to some embodiments of the present invention, the adapter includes a front side plate portion, a middle plate portion and a rear side plate portion, the front side plate portion is connected to the front side of the middle plate portion, the front side plate portion is provided with a first connection position for connecting with the sill beam, the rear side plate portion is connected to the rear side of the middle plate portion, and the rear side plate portion is provided with a second connection position for connecting with the longitudinal beam body.

[0013] The rear floor force transmission assembly according to some embodiments of the present invention, the front side plate portion includes a front vertical sub-plate and a front horizontal sub-plate, the front vertical sub-plate and the front horizontal sub-plate together with the middle plate portion define a sill beam connection space, and the first connection position is provided on the front vertical sub-plate and / or the front horizontal sub-plate; the rear side plate portion includes a rear vertical sub-plate and a rear horizontal sub-plate, the rear vertical sub-plate and the rear horizontal sub-plate together with the middle plate portion define a longitudinal beam body connection space, and the second connection position is provided on the rear vertical sub-plate and / or the rear horizontal sub-plate.

[0014] According to some embodiments of the present invention, in the rear floor force transmission assembly, the longitudinal beam body has a hollow cavity, the hollow cavity is open at the end of the longitudinal beam body, and the front end of the rear section of the longitudinal beam is inserted into the hollow cavity and connected to the longitudinal beam body by fasteners.

[0015] According to some embodiments of the present invention, in the rear floor force transmission assembly, the seat mounting beam is formed by extrusion of profiles, and a structural cavity is formed inside the seat mounting beam. A plurality of structural ribs are provided inside the structural cavity, and the structural ribs divide the structural cavity into a plurality of sub-cavities.

[0016] According to some embodiments of the present invention, in the rear floor force transmission assembly, at least one of the longitudinal beam body, the rear section of the longitudinal beam, the seat mounting crossbeam, and the rear floor crossbeam is formed by profile extrusion.

[0017] According to some embodiments of the present invention, in the rear floor force transmission assembly, both the longitudinal beam body and the sill beam are made of extruded aluminum profiles, and the adapter is a casting.

[0018] The present invention also proposes a vehicle.

[0019] The vehicle according to the present invention is provided with a rear floor force transmission assembly according to any of the above-mentioned embodiments.

[0020] The vehicle and the aforementioned rear floor power transmission assembly have the same advantages over the prior art, which will not be repeated here.

[0021] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0022] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0023] Figure 1 This is a schematic diagram of the structure of the rear floor force transmission assembly according to an embodiment of the present invention. Figure 1 ;

[0024] Figure 2 This is a schematic diagram of the structure of the rear floor force transmission assembly according to an embodiment of the present invention. Figure 2 ;

[0025] Figure 3 This is a top view of the rear floor force transmission assembly according to an embodiment of the present invention;

[0026] Figure 4 This is a schematic diagram of the structure of the seat mounting beam according to an embodiment of the present invention. Figure 1 ;

[0027] Figure 5 This is a schematic diagram of the structure of the seat mounting beam according to an embodiment of the present invention. Figure 2 ;

[0028] Figure 6 This is a schematic diagram of the structure of the connecting piece between the longitudinal beam body and the sill beam according to an embodiment of the present invention;

[0029] Figure 7 This is a rendering of the adapter connecting the longitudinal beam body and the sill beam according to an embodiment of the present invention, installed on the vehicle body.

[0030] Figure label:

[0031] Rear floor power transmission assembly 100,

[0032] Longitudinal beam structure 1, longitudinal beam body 11, installation space 111, support flange 112, rear section of longitudinal beam 12, flange edge 121, seat mounting crossbeam 2, structural cavity 21, structural rib 22, sub-cavity 23, clearance groove 24, rear floor crossbeam 3, front crossbeam 31, middle crossbeam 32, rear crossbeam 33, reinforcing longitudinal beam 4, mounting part 5, adapter 6, front side panel 61, front vertical sub-panel 611, front horizontal sub-panel 612, middle panel 62, rear side panel 63, rear vertical sub-panel 631, rear horizontal sub-panel 632.

[0033] Door sill beam connects to space A, longitudinal beam body connects to space B, door sill beam 200, rear wheel arch sheet metal 300. Detailed Implementation

[0034] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0035] Unless otherwise specified, the front-back direction in this application refers to the longitudinal direction of the vehicle, i.e., the X direction; the left-right direction refers to the lateral direction of the vehicle, i.e., the Y direction; and the up-down direction refers to the vertical direction of the vehicle, i.e., the Z direction.

[0036] The following is for reference. Figures 1-7 The rear floor force transmission assembly 100 according to an embodiment of the present invention can ensure the effectiveness of the force transmission channel and smoother overall force transmission, improve the safety performance of the vehicle in collisions from different directions, integrate parts, reduce the number of components, reduce development costs, reduce vehicle weight, and increase vehicle range.

[0037] According to an embodiment of the present invention, the rear floor force transmission assembly 100 includes: two longitudinal beam structures 1, a seat mounting crossbeam 2, and a rear floor crossbeam 3.

[0038] Specifically, the two longitudinal beam structures 1 are distributed laterally spaced apart. The two longitudinal beam structures 1 are the left longitudinal beam structure 1 and the right longitudinal beam structure 1. The left longitudinal beam structure 1 and the right longitudinal beam structure 1 extend longitudinally and are distributed laterally spaced apart. This can form the structural arrangement of the two longitudinal beam structures 1 in the rear floor force transmission assembly 100, and can realize the two force transmission channels of the two longitudinal beam structures 1. The longitudinal beam structure 1 includes a longitudinal beam body 11 and a longitudinal beam rear section 12. The rear end of the longitudinal beam body 11 is connected to the longitudinal beam rear section 12. The longitudinal beam body 11 is located at the front end of the longitudinal beam structure 1, and the longitudinal beam rear section 12 is located at the rear end of the longitudinal beam structure 1. The rear end of the longitudinal beam body 11 is connected to the front end of the longitudinal beam rear section 12, so that the longitudinal beam body 11 and the longitudinal beam rear section 12 can be connected together in the front-back direction, thereby realizing the connection and fixation of the longitudinal beam body 11 and the longitudinal beam rear section 12, and completing the internal connection of the longitudinal beam structure 1. There are two longitudinal beam structures 1, and there are also two longitudinal beam bodies 11 and two longitudinal beam rear sections 12, which can complete the connection and fixation of the two longitudinal beam structures 1. The longitudinal beam body 11 has a connector 6 at its front end, which is used to connect with the threshold beam 200. That is, both longitudinal beam bodies 11 have connectors 6 at their front ends, and the two connectors 6 can be used to connect with the two threshold beams 200. The longitudinal beam body 11 and the threshold beam 200 can be connected together through the connectors 6, so that the force on the longitudinal beam body 11 can be transferred to the threshold beam 200 along the connectors 6, thus realizing the force transmission path from the longitudinal beam structure 1 to the threshold beam 200, and the force transmission is smoother.

[0039] The seat mounting beam 2 and the rear floor beam 3 are spaced apart between the two longitudinal beam structures 1 in the front-to-back direction. Specifically, both the seat mounting beam 2 and the rear floor beam 3 extend in the left-to-right direction, meaning their extension directions are parallel to each other. The seat mounting beam 2 and the rear floor beam 3 are spaced apart between the two longitudinal beam structures 1 in the front-to-back direction, allowing for the installation and connection of the seat mounting beam 2 and the rear floor beam 3 with the two longitudinal beam structures 1. This ensures that the two longitudinal beam structures 1 are sequentially supported by the seat mounting beam 2 and the rear floor beam 3 from front to back, making the connection between the two longitudinal beam structures 1 more robust and improving the strength of the rear floor force transmission assembly 100. Furthermore, the connection method is welding, which further enhances the connection strength between the two longitudinal beam structures 1 and forms multiple force transmission channels in the front-to-back and left-to-right directions, improving the force transmission effect of the rear floor force transmission assembly 100.

[0040] Specifically, such as Figure 1 , Figure 2As shown, two longitudinal beam structures 1 are distributed on the outer side of the rear floor force transmission assembly 100, and seat mounting crossbeam 2 and rear floor crossbeam 3 are distributed on the inner side of the rear floor force transmission assembly 100. The two longitudinal beam structures 1 are distributed longitudinally, and seat mounting crossbeam 2 and rear floor crossbeam 3 are distributed transversely. The longitudinal beam structures 1 are perpendicularly connected to the seat mounting crossbeam 2 and rear floor crossbeam 3, which can fix the rear floor force transmission assembly 100. The longitudinal beam structures 1, seat mounting crossbeam 2 and rear floor crossbeam 3 can all be made of profile extrusion molding. Profile extrusion molding can ensure an effective force transmission channel, ensure smoother overall force transmission, improve the safety performance of the vehicle in collisions in different directions, reduce the number of parts, reduce development costs, and the profile extrusion molding is lightweight, which can reduce the weight of the vehicle body and improve the vehicle's range.

[0041] According to an embodiment of the present invention, the rear floor force transmission assembly 100, by rationally distributing and welding together two longitudinal beam structures 1, seat mounting crossbeam 2 and multiple rear floor crossbeams 3, can ensure smoother overall force transmission, improve the safety performance of the vehicle in frontal collisions, oblique collisions, side collisions and pole collisions, integrate parts, reduce the number of parts, reduce development costs, reduce vehicle weight, and increase vehicle range.

[0042] In some embodiments, the longitudinal beam body 11 is formed by profile extrusion, and the end of the seat mounting beam 2 and the end of at least one rear floor beam 3 are connected to the inner side of the longitudinal beam body 11.

[0043] Specifically, such as Figure 1 and Figure 2 As shown, the longitudinal beam body 11 is formed by profile extrusion molding, which reduces the number of parts of the longitudinal beam body 11, reduces development costs, and the profile extrusion molding part is lightweight, which can reduce the weight of the longitudinal beam body 11 and reduce the weight of the vehicle body. There are two longitudinal beam structures 1, and there are also two longitudinal beam bodies 11 and two longitudinal beam rear sections 12, which can complete the connection and fixation of the two longitudinal beam structures 1.

[0044] like Figure 1 , Figure 2 As shown, the left and right ends of the seat mounting beam 2 are connected to the inner sides of the two longitudinal beam bodies 11, and the seat mounting beam 2 is connected to the front end of the two longitudinal beam bodies 11, which can realize the connection and fixation between the seat mounting beam 2 and the longitudinal beam bodies 11. There is at least one rear floor beam 3, and the left and right ends of at least one rear floor beam 3 are connected to the inner sides of the two longitudinal beam bodies 11, which can realize the layout and connection between the seat mounting beam 2 and at least one rear floor beam 3 and the two longitudinal beam bodies 11. The connection method is welding, which has high connection strength and can improve the force transmission effect of the rear floor beam 3, making the overall force transmission inside the rear floor force transmission assembly 100 smoother and ensuring the effectiveness of the force transmission channel.

[0045] In some embodiments, there are multiple rear floor beams 3, all of which are located behind the seat mounting beam 2, and the multiple rear floor beams 3 are spaced apart in the front-to-back direction.

[0046] Specifically, there are multiple rear floor crossbeams 3, all located behind the seat mounting crossbeam 2. This increases the structural strength behind the seat mounting crossbeam 2. The multiple rear floor crossbeams 3 are distributed parallel to the seat mounting crossbeam 2 and are spaced apart between the two longitudinal beam structures 1 in the front-rear direction. This improves the connection strength between the two longitudinal beam structures 1 and the connection strength between the multiple rear floor crossbeams 3. This provides multiple force transmission paths along the rear floor crossbeams 3, improving the force transmission between the two longitudinal beam structures 1 and the multiple rear floor crossbeams 3. This makes the structural layout of the seat mounting crossbeam 2, the two longitudinal beam structures 1, and the multiple rear floor crossbeams 3 more reasonable, ensuring the effectiveness of the force transmission channels and improving the structural strength of the rear floor force transmission assembly 100.

[0047] In some embodiments, the plurality of rear floor beams 3 are respectively a front beam 31, a middle beam 32 and a rear beam 33 distributed sequentially in the front-rear direction. The front beam 31 and the middle beam 32 are both connected between the longitudinal beam bodies 11 of the two longitudinal beam structures 1, and the rear beam 33 is connected between the rear sections 12 of the longitudinal beams of the two longitudinal beam structures 1.

[0048] Specifically, such as Figures 1-3 As shown, there can be three rear floor crossbeams 3, namely a front crossbeam 31, a middle crossbeam 32, and a rear crossbeam 33. These three crossbeams are spaced apart sequentially along the front-rear direction. The left and right end faces of the front crossbeam 31 are connected to the inner surface of the longitudinal beam body 11, and are connected near the front end of the longitudinal beam body 11. The front crossbeam 31 is located behind the seat mounting crossbeam 2. The left and right end faces of the middle crossbeam 32 are connected to the inner surface of the longitudinal beam body 11, and are connected near the rear end of the longitudinal beam body 11. This configuration allows for... The front crossbeam 31 and the middle crossbeam 32 are connected to the longitudinal beam body 11 by welding, which provides high connection strength and enables the transmission of force between the front crossbeam 31, the middle crossbeam 32 and the longitudinal beam body 11. The left and right end faces of the rear crossbeam 33 are connected to the inner side of the rear section 12 of the longitudinal beam and are connected near the rear end of the rear section 12 of the longitudinal beam. The rear crossbeam 33 is connected to the rear section 12 of the longitudinal beam by welding, which provides high connection strength and improves the overall vehicle safety performance in frontal collisions, side collisions, and pole collisions, thereby enhancing the practical safety performance of the vehicle.

[0049] Among them, such as Figure 1 , Figure 2As shown, a flange 121 is further provided at the rear end of the rear section 12 of the longitudinal beam. The flange 121 is arranged at a position slightly lower than the inner side surface of the rear section 12 of the longitudinal beam. The left and right ends of the rear cross beam 33 are lapped on the two flanges 121, which can support the rear cross beam 33. Then, by welding the rear cross beam 33 to the inner side surface of the rear section 12 of the longitudinal beam, the connection between the rear cross beam 33 and the rear section 12 of the longitudinal beam can be realized. The setting of the flange 121 facilitates the assembly of the rear cross beam 33 and has reliable installation.

[0050] In some embodiments, at least one reinforcing longitudinal beam 4 is provided between the front cross beam 31 and the middle cross beam 32. The reinforcing longitudinal beam 4 is formed by profile extrusion.

[0051] Specifically, as Figure 3 shown, a reinforcing longitudinal beam 4 can be provided between the front cross beam 31 and the middle cross beam 32. The number of the reinforcing longitudinal beams 4 is at least one. The at least one reinforcing longitudinal beam 4 is perpendicularly connected to the front cross beam 31 and the middle cross beam 32, that is, the at least one reinforcing longitudinal beam 4 is arranged in the front-rear direction, and the connection method is welding. Its connection strength is high. The reinforcing longitudinal beam 4 is used for longitudinally connecting the front cross beam 31 and the middle cross beam 32, which can support between the front cross beam 31 and the middle cross beam 32, so that the middle position of the front cross beam 31 and the middle cross beam 32 is supported, thereby improving the connection strength between the front cross beam 31 and the middle cross beam 32. Moreover, the impact force received by the middle cross beam 32 can be transmitted to the front cross beam 31 through the at least one reinforcing longitudinal beam 4, realizing the force transmission path, buffering and improving the impact of the impact force on the middle cross beam 32 and the front cross beam 31. The reinforcing longitudinal beam 4 is formed by profile extrusion, which can ensure the effectiveness of the internal force transmission channel of the reinforcing longitudinal beam 4. The profile extrusion parts are light in weight, which can reduce the weight of the reinforcing longitudinal beam 4, achieving the lightweight effect and improving the strength of the reinforcing longitudinal beam 4.

[0052] In some embodiments, there are two reinforcing longitudinal beams 4, and the two reinforcing longitudinal beams 4 are arranged at intervals in the transverse direction between the front cross beam 31 and the middle cross beam 32. The front cross beam 31, the middle cross beam 32, the two reinforcing longitudinal beams 4 and the two longitudinal beam bodies 11 are distributed in a "mesh" shape.

[0053] Specifically, as Figure 3As shown in the figure, two reinforcing longitudinal beams 4 are provided between the front cross beam 31 and the middle cross beam 32, and the two reinforcing longitudinal beams 4 are distributed at intervals in the transverse direction. The two reinforcing longitudinal beams 4 extend longitudinally, and the front end faces of the two reinforcing longitudinal beams 4 are connected to the rear side face of the front cross beam 31, and the rear end faces of the two reinforcing longitudinal beams 4 are connected to the front side face of the middle cross beam 32. The connection and fixation of the two reinforcing longitudinal beams 4 with the front cross beam 31 and the middle cross beam 32 can be realized, so that the front cross beam 31, the middle cross beam 32, the two reinforcing longitudinal beams 4 and the two longitudinal beam bodies 11 form a "mu" - shaped structure. That is, two - position connections can be realized between the front cross beam 31 and the middle cross beam 32, the connection strength between the front cross beam 31 and the middle cross beam 32 can be improved, the connection strength of the four structures can be higher, and the structure is more stable. The connection method is welding, which can improve the connection strength.

[0054] Therefore, by setting two reinforcing longitudinal beams 4 and the "mu" - shaped structure, the impact force received by the middle cross beam 32 can be transmitted to the front cross beam 31 through the two reinforcing longitudinal beams 4, two force - transmission channels can be provided, the force - transmission effect can be effectively guaranteed, and the frontal collision, offset collision, side collision, and pole collision safety performance of the whole vehicle can be improved.

[0055] In some embodiments, the longitudinal beam body 11 is provided with a supporting flange 112. The supporting flange 112 protrudes on the inner side face of the longitudinal beam body 11, and the end parts of the front cross beam 31 and the middle cross beam 32 are respectively supported on the supporting flange 112.

[0056] Specifically, as Figure 3 shown, the longitudinal beam body 11 is provided with a supporting flange 112. The supporting flange 112 is arranged at a position slightly lower than the middle of the inner side face of the longitudinal beam body 11. The supporting flange 112 and the longitudinal beam body 11 can be connected by welding to strengthen the connection strength between the supporting flange and the longitudinal beam body. And the supporting flange 112 protrudes inward. The length of the supporting flange 112 in the front - and - rear direction is the distance between the front cross beam 31 and the middle cross beam 32, so that the supporting flange 112 is used to support the end parts of the front cross beam 31 and the middle cross beam 32. The left - and - right end parts of the front cross beam 31 and the middle cross beam 32 are both supported and connected to the supporting flange 112 and are connected to the supporting flange 112 by welding, which can improve the connection strength between the front cross beam 31 and the middle cross beam 32 and the longitudinal beam body 11, and can also improve the connection strength between the front cross beam 31 and the middle cross beam 32, and has good stability.

[0057] In some embodiments, the adapter 6 includes a front side plate 61, a middle plate 62, and a rear side plate 63, wherein the front side plate 61, the middle plate 62, and the rear side plate 63 are all constructed as plate-like structures of the same thickness, and the front side plate 61 is connected to the front side of the middle plate 62, and the rear side plate 63 is connected to the rear side of the middle plate 62. That is, the middle plate 62 is disposed along the Y direction, and the front side plate 61 and the rear side plate 63 are disposed along the X direction. Specifically, the front and rear side surfaces of the intermediate plate portion 62 along the X direction abut against the ends of the front side plate portion 61 and the rear side plate portion 63, respectively. Thus, the intermediate plate portion 62 can separate the front side plate portion 61 and the rear side plate portion 63. Furthermore, the intermediate plate portion 62 being positioned along the Y direction also helps to increase the contact area between the intermediate plate portion 62 and the rear wheel arch sheet metal 300, thereby facilitating the contact and connection between the intermediate plate portion 62 and the rear wheel arch sheet metal 300, increasing the connection area between the adapter 6 and the vehicle body, and improving the connection strength.

[0058] And, such as Figure 6 As shown, the front side panel 61 has a first connection position for connecting with the sill beam 200, and the rear side panel 63 has a second connection position for connecting with the longitudinal beam body 11. That is, by placing the adapter 6 on one side of the sill beam 200, the first connection position on the front side panel 61 can abut against the sill beam 200, thereby fixing the front side panel 61 to the sill beam 200 under the action of the first connection position. Simultaneously, the area of ​​the middle panel 62 facing away from the front side panel 61 can overlap and abut against the rear wheel arch sheet metal 300, and then be fixed by MIG welding. Continuing, the second connection position on the rear side panel 63 can abut against the longitudinal beam body 11, thereby connecting the rear side panel 63 to the longitudinal beam body 11 under the action of the second connection position.

[0059] Therefore, as Figure 7 As shown, the above configuration ensures that the adapter 6 can be stably installed on the vehicle body. Furthermore, the adapter 6 is connected to the vehicle body structure at its front, middle, and rear positions along the X-direction, further guaranteeing the stability of the adapter 6 when installed on the vehicle body and facilitating the overlap between the sill beam 200 and the longitudinal beam body 11. Thus, when the vehicle is impacted from the side, the impact force can be transmitted and dispersed to the longitudinal beam and the front and rear floors through the integrally formed connector, thereby reducing the degree of vehicle deformation and significantly improving the vehicle's safety performance.

[0060] In some embodiments, the front panel 61 includes a front vertical sub-panel 611 and a front horizontal sub-panel 612, which, together with the middle panel 62, define the sill beam connection space A. It should be noted that, as... Figure 6As shown, both the front vertical sub-plate 611 and the front horizontal sub-plate 612 are constructed as strip plates, and the front vertical sub-plate 611 and the front horizontal sub-plate 612 are vertically connected, so that the ends of the front vertical sub-plate 611 and the front horizontal sub-plate 612 abut against the plate surface of the middle plate portion 62.

[0061] The height from the end face of the front horizontal sub-plate 612 to the bottom of the front vertical sub-plate 611 is the same as the height of the sill beam 200, which defines the sill beam connection space A between the front vertical sub-plate 611 and the front horizontal sub-plate 612. The bottom of the sill beam 200 and the bottom of the front vertical sub-plate of the sill beam 200 are flush, which is conducive to the rationalization of the vehicle body design, avoids occupying interior space, and also facilitates the force transmission path.

[0062] Furthermore, the front vertical sub-plate 611 and / or the front horizontal sub-plate 612 are provided with first connecting positions. That is, when the sill beam 200 is installed in the sill beam connection space A, the two sides of the sill beam 200 can abut against the front vertical sub-plate 611 and the front horizontal sub-plate 612 respectively. By providing first connecting positions on the front vertical sub-plate 611 and the front horizontal sub-plate 612, a fixed connection with the sill beam 200 in multiple directions can be achieved. Of course, the first connecting position can be provided only on the front vertical sub-plate 611; or only on the front horizontal sub-plate 612; or both the front vertical sub-plate 611 and the front horizontal sub-plate 612 can be provided, as long as the connection stability between the front plate 61 and the sill beam 200 is ensured.

[0063] The rear panel 63 includes a rear vertical sub-plate 631 and a rear horizontal sub-plate 632. The rear vertical sub-plate 631 and the rear horizontal sub-plate 632, together with the intermediate panel 62, define the longitudinal beam body connection space B. It should be noted that, as... Figure 6 As shown, both the rear vertical sub-plate 631 and the rear horizontal sub-plate 632 are constructed as strip plates, and the rear vertical sub-plate 631 and the rear horizontal sub-plate 632 are vertically connected, so that both the rear vertical sub-plate 631 and the rear horizontal sub-plate 632 abut against the plate surface of the middle plate portion 62.

[0064] The rear vertical sub-plate 631 and the rear horizontal sub-plate 632 define the connection space B of the longitudinal beam body. The height from the end face of the rear horizontal sub-plate 632 to the top of the rear vertical sub-plate 631 is the same as the height of the longitudinal beam body 11. Thus, after the sill beam 200 and the connector are installed, the end face of the rear horizontal sub-plate 632 can abut against the longitudinal beam body 11, and the height of the rear vertical sub-plate 632 and the longitudinal beam body 11 are the same, thereby ensuring installation accuracy and facilitating the subsequent fixing installation effect.

[0065] Furthermore, the rear vertical sub-plate 631 and / or the rear horizontal sub-plate 632 are provided with second connection positions. That is, when the longitudinal beam body 11 is installed in the longitudinal beam body connection space B, the two sides of the longitudinal beam body 11 can respectively abut against the rear vertical sub-plate 631 and the rear horizontal sub-plate 632. By providing second connection positions on the rear vertical sub-plate 631 and the rear horizontal sub-plate 632, a fixed connection with the longitudinal beam body 11 in multiple directions can be achieved. Of course, the second connection position can be provided only on the rear vertical sub-plate 631; or only on the rear horizontal sub-plate 632; or both the rear vertical sub-plate 631 and the rear horizontal sub-plate 632 can be provided, as long as the connection stability between the rear plate portion 63 and the longitudinal beam body 11 is ensured.

[0066] In some embodiments, the longitudinal beam body 11 forms an arched mounting space 111 for mounting the rear suspension and the rear subframe, and the mounting space 111 is provided with a mounting part 5 for mounting the rear air spring.

[0067] Specifically, the longitudinal beam body 11 forms an installation space 111, such as Figure 1 and Figure 2 As shown, the installation space 111 can be located in the middle of the longitudinal beam body 11. The installation space 111 is an arched structure that is recessed upwards along the lower surface of the longitudinal beam body 11. The arched structure allows for more space in the middle of the longitudinal beam body 11 to avoid interference with the rear suspension and rear subframe. The arched structure of the installation space 111 also helps avoid interference with other structures and meets the structural strength requirements of the longitudinal beam body 11 itself. Because of the installation space 111, the longitudinal beam body 11 has a structure that is smaller in the middle and larger at both ends. The top of the installation space 111 is a closed structure, maintaining the integrity of the surface of the longitudinal beam body 11. Simultaneously, an installation part 5 is provided within the installation space 111 for installing an air spring. The installation part 5 allows for the installation of the air spring, which provides cushioning and vibration damping for the longitudinal beam body 11. This ensures good vibration damping during vehicle operation, preventing excessive bumps and avoiding performance degradation during prolonged driving.

[0068] In some embodiments, the longitudinal beam body 11 has a hollow cavity, which is open at the end of the longitudinal beam body 11, and the front end of the rear section 12 of the longitudinal beam is inserted into the hollow cavity and connected to the longitudinal beam body 11 by fasteners.

[0069] Specifically, a hollow cavity is formed inside the longitudinal beam body 11, extending along the length of the longitudinal beam body 11, and the front and rear ends of the hollow cavity are open, such as... Figure 1 , Figure 2As shown, the hollow cavity is a hollow structure that matches the structure of the longitudinal beam body 11. The front and rear ends have large spaces, while the middle space is small. The hollow cavity can be used to buffer the impact force. The external structural dimensions of the rear section 12 of the longitudinal beam are smaller than the rear end dimensions of the hollow cavity, and the end of the hollow cavity is open. The front end of the rear section 12 of the longitudinal beam can be inserted into the hollow cavity and then locked with fasteners. This completes the insertion connection between the front end of the rear section 12 of the longitudinal beam and the rear end of the hollow cavity. The insertion connection is easy to operate and reliable. It also allows for a detachable connection between the rear section 12 of the longitudinal beam and the longitudinal beam body 11, resulting in high connection strength between the rear section 12 of the longitudinal beam and the longitudinal beam body 11, and facilitating disassembly and maintenance between the rear section 12 of the longitudinal beam and the longitudinal beam body 11.

[0070] In some embodiments, the seat mounting beam 2 is formed by extrusion of profiles, and a structural cavity 21 is formed inside the seat mounting beam 2. A plurality of structural ribs 22 are provided inside the structural cavity 21, and the structural ribs 22 divide the structural cavity 21 into a plurality of sub-cavities 23.

[0071] Specifically, such as Figure 4 and Figure 5 As shown, the seat mounting beam 2 is formed by profile extrusion. The profile extrusion is high in strength, light in weight, corrosion-resistant, and durable. This makes the seat mounting beam 2 lighter, effectively reducing the weight of the vehicle body, and also increases the strength of the seat mounting beam 2. The seat mounting seat has a structural cavity 21 inside. The structural cavity 21 can be used to absorb and buffer the impact force received by the seat mounting seat. The structural cavity 21 has multiple structural ribs 22, which can improve the internal structural strength of the seat mounting beam 2. The multiple structural ribs 22 divide the structural cavity 21 into multiple sub-cavities 23, which can absorb the impact energy received.

[0072] The front part of the seat mounting beam 2 is designed as a slope, which reduces the external structural area of ​​the seat mounting beam 2 while meeting its strength requirements. In specific designs, such as... Figure 4 , Figure 5 As shown, there can be seven structural ribs 22, five in the vertical direction and two in the horizontal direction. Setting the structural ribs 22 in different directions can provide multiple supports inside the seat mounting beam 2 to improve the structural strength of the seat mounting beam 2. Three structural ribs 22 can divide the structural cavity 21 into eight sub-cavities 23. The eight sub-cavities 23 can be square or triangular in shape. The number of structural ribs 22 can also be other numbers, as long as it meets the structural strength requirements of the seat mounting beam 2.

[0073] In some embodiments, a clearance groove 24 is formed at the bottom of the seat mounting beam 2, which runs through the front-rear direction and is used to clear the central passage.

[0074] Specifically, such as Figure 4 , Figure 5As shown, the seat mounting crossbeam 2 is provided with a clearance groove 24. The clearance groove 24 is located in the middle of the seat mounting crossbeam 2 and is close to the lower side of the seat mounting crossbeam 2. The clearance groove 24 can be square in shape and runs through the seat mounting crossbeam 2 in the front-rear direction. The upper and lower sides of the front end of the clearance groove 24 are open. Figure 5 As shown, the top of the clearance groove 24 is a closed plate structure, which ensures the integrity of the upper sub-cavity 23 and the structural strength of the upper part of the seat mounting beam 2. The clearance groove 24 is set to avoid the central channel, which can reserve more space for the structure of the central channel and ensure the overall structural strength of the seat mounting beam 2. The seat mounting beam 2 is manufactured by profile extrusion molding, which makes the molding method of the seat mounting beam 2 simple and easy to manufacture. In addition, the seat mounting beam 2 is lightweight, which can reduce the weight of the vehicle body.

[0075] In some embodiments, at least one of the longitudinal beam body 11, the rear section of the longitudinal beam 12, the seat mounting crossbeam 2, and the rear floor crossbeam 3 is formed by profile extrusion.

[0076] Specifically, the longitudinal beam body 11, the rear section of the longitudinal beam 12, the seat mounting crossbeam 2, and the rear floor crossbeam 3 can all be formed by press-forming profiles. The profile extrusion parts have high strength, light weight, and are corrosion-resistant and durable, which can ensure the strength of the longitudinal beam structure 1, the seat mounting crossbeam 2, and the rear floor crossbeam 3, and make the structure of the longitudinal beam structure 1, the seat mounting crossbeam 2, and the rear floor crossbeam 3 lighter. The profile extrusion parts can ensure the effectiveness of the force transmission channel, which can improve the force transmission effect between the longitudinal beam body 11, the rear section of the longitudinal beam 12, the seat mounting crossbeam 2, and the rear floor crossbeam 3, thereby improving the effectiveness of the force transmission channel of the rear floor force transmission assembly 100. It can also improve the safety performance of the whole vehicle in frontal collision, oblique collision, side collision, and pole collision. The integration of parts reduces the number of components and reduces development costs, thereby making the structure of the rear floor force transmission assembly 100 lighter, so as to reduce the weight of the vehicle body and improve the driving range of the vehicle.

[0077] In some embodiments, both the longitudinal beam body 11 and the sill beam 200 are made of extruded aluminum profiles, while the adapter 6 is a casting. This simplifies the forming process of the longitudinal beam body 11 and the sill beam 200, improving forming efficiency. Furthermore, the casting-formed adapter 6 is fixedly connected between the longitudinal beam body 11 and the sill beam 200, ensuring the structural strength of the adapter 6 at the connection point between the longitudinal beam body 11 and the sill beam 200. This improves the overall connection stability and reliability, guaranteeing the overall strength of the rear floor force transmission assembly 100.

[0078] The present invention also proposes a vehicle.

[0079] According to the present invention, the vehicle is provided with a rear floor force transmission assembly 100 of any of the above embodiments. By rationally distributing and welding together the two longitudinal beam structures 1, the seat mounting crossbeam 2 and the multiple rear floor crossbeams 3, the overall force transmission can be made smoother, which can improve the safety performance of the whole vehicle in frontal collision, oblique collision, side collision and pole collision. The parts are integrated, the number of parts is reduced, the development cost is reduced, the vehicle weight is reduced, and the vehicle range is increased.

[0080] 1. In the description of this invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0081] 2. In the description of this invention, "first feature" and "second feature" may include one or more of the features.

[0082] 3. In the description of this invention, "a plurality of" means two or more.

[0083] 4. In the description of the present invention, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or the first and second features being in contact through another feature between them.

[0084] 5. In the description of the present invention, the terms "above", "over" and "on top" for the first feature and the second feature include the first feature being directly above or diagonally above the second feature, or simply indicate that the first feature is at a higher horizontal level than the second feature.

[0085] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0086] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A rear floor force transmission assembly, characterized in that, Comprising: Two longitudinal beam structures, the longitudinal beam structures comprising longitudinal beam bodies and rear segments of the longitudinal beam bodies, the rear ends of the longitudinal beam bodies being connected to the rear segments of the longitudinal beam bodies, the front ends of the longitudinal beam bodies being provided with adapter members for connecting to sill beams; A seat mounting cross beam and a rear floor cross beam, the seat mounting cross beam and the rear floor cross beam being spaced apart in the front-rear direction between the two longitudinal beam structures; The adapter member comprises a front side plate portion, an intermediate plate portion and a rear side plate portion, the intermediate plate portion being arranged in the up-down direction and for connecting to a vehicle's rear wheelhouse sheet metal, the front side plate portion being arranged in the front-rear direction and connected to the front side of the intermediate plate portion, the front side plate portion being provided with a first connection position for connecting to the sill beam, the rear side plate portion being arranged in the front-rear direction and connected to the rear side of the intermediate plate portion, the rear side plate portion being provided with a second connection position for connecting to the longitudinal beam body.

2. The rear floor force transmission assembly according to claim 1, characterized in that, There are multiple rear floor cross beams, all of the multiple rear floor cross beams are located behind the seat mounting cross beam, and the multiple rear floor cross beams are spaced apart in the front-rear direction.

3. The rear floor force transmission assembly according to claim 2, characterized in that, The multiple rear floor cross beams are respectively a front cross beam, a middle cross beam and a rear cross beam arranged in sequence in the front-rear direction, the front cross beam and the middle cross beam are both connected between the longitudinal beam bodies of the two longitudinal beam structures, and the rear cross beam is connected between the rear segments of the longitudinal beam bodies of the two longitudinal beam structures.

4. The rear floor force transmission assembly according to claim 3, characterized in that, There is at least one reinforcing longitudinal beam between the front cross beam and the middle cross beam, and the reinforcing longitudinal beam is formed by profile extrusion.

5. The rear floor force transmission assembly according to claim 4, characterized in that, There are two reinforcing longitudinal beams, and the two reinforcing longitudinal beams are arranged at intervals in the transverse direction between the front cross beam and the middle cross beam, and the front cross beam, the middle cross beam, the two reinforcing longitudinal beams and the two longitudinal beam bodies are distributed in a "mesh" shape.

6. The rear floor force transmission assembly according to claim 3, characterized in that, The longitudinal beam body is provided with a supporting flange, the supporting flange protrudes on the inner side surface of the longitudinal beam body, and the ends of the front cross beam and the middle cross beam are respectively supported on the supporting flange.

7. The rear floor force transmission assembly according to claim 1, characterized in that, The front side plate portion comprises a front vertical sub-plate and a front horizontal sub-plate, the front vertical sub-plate and the front horizontal sub-plate together with the intermediate plate portion define a sill beam connection space, and the front vertical sub-plate and / or the front horizontal sub-plate are provided with the first connection position; The rear side plate portion comprises a rear vertical sub-plate and a rear horizontal sub-plate, the rear vertical sub-plate and the rear horizontal sub-plate together with the intermediate plate portion define a longitudinal beam body connection space, and the rear vertical sub-plate and / or the rear horizontal sub-plate are provided with the second connection position.

8. The rear floor force transmission assembly according to claim 1, characterized in that, The longitudinal beam body forms a hollow cavity, the hollow cavity is open at the end of the longitudinal beam body, and the front end of the rear segment of the longitudinal beam is inserted into the hollow cavity and connected to the longitudinal beam body through fasteners.

9. The rear floor force transmission assembly according to claim 1, characterized in that, The seat mounting cross beam is formed by profile extrusion, a structural cavity is formed inside the seat mounting cross beam, and multiple structural ribs are arranged inside the structural cavity, and the structural ribs divide the structural cavity into multiple sub-cavities.

10. The rear floor force transmission assembly according to claim 1, characterized in that, At least one of the longitudinal beam body, the rear segment of the longitudinal beam, the seat mounting cross beam and the rear floor cross beam is formed by profile extrusion.

11. The rear floor force transmission assembly according to claim 1, characterized in that, Both the longitudinal beam body and the sill beam are made of extruded aluminum profiles, and the adapter member is a casting.

12. A vehicle, characterized in that, The system is equipped with the rear floor force transmission assembly as described in any one of claims 1-11.

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