Platform lower vehicle body and platform seat structure for SD and SUV

Abstract

The invention relates to the technical field of new energy vehicles, and discloses an SD and SUV platform lower vehicle body and platform seat structure, the SD and SUV platform lower vehicle body and platform seat structure comprises a lower vehicle body structure and a seat assembly, the lower vehicle body structure comprises a front floor threshold assembly, a rear floor assembly and an engine compartment assembly; a front seat front cross beam assembly in the front floor threshold assembly is used as a difference part; a rear wall structure in the rear floor assembly serves as a difference part, and the upper portion of a front baffle body, a front windshield lower cross beam assembly, a front vertical plate assembly, a front end structure assembly, a front wheel cover assembly and an engine cover hinge mounting plate assembly serve as difference parts in the engine compartment assembly due to the difference of the Z-direction height of an SD vehicle body and an SUV vehicle body and the difference of human body sitting postures. In the seat assembly, frameworks of the front seat assembly, the rear seat cushion assembly and the rear seat backrest assembly are universal. According to the invention, maximized sharing of the SD and the SUV can be realized, and different upper vehicle body structures of the SD and the SUV can be matched.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy vehicles, in particular to a platform lower body and a platform seat structure for SD and SUV. Background Art

[0002] At present, both new energy and traditional car companies have deployed multiple models in the research and development and platform development of new energy vehicles, such as Tesla's Model 3 and Model Y, Weilai's ET7 and ES7, Xiaopeng P7 and G9, Deep Blue SL03 and S7, Zhiji L7 and LS7, to meet the car needs of different customer groups. Through comparison, it is found that the common feature of the above car companies is that they simultaneously deploy and develop multiple models in the fields of sedans and SUVs to meet the diversified needs of the market. The multi-product strategy can improve the coverage and market share of products, but the differentiation and diversification of products also brings about differentiation in multiple links such as mold development, processing and manufacturing, management, logistics distribution and production line assembly. Different models cannot achieve common platform development and production as much as possible, resulting in high development and production costs of automobiles. Summary of the invention

[0003] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a platform lower body and platform seat structure for SD and SUV, which can achieve maximum sharing of SD and SUV and match the different upper body structures of SD and SUV.

[0004] In order to achieve the above object, the present invention is implemented through the following technical solutions:

[0005] A platform lower body and platform seat structure for SD and SUV, comprising a lower body structure and a seat assembly, wherein the lower body structure comprises a front floor sill assembly, a rear floor assembly, and an engine compartment assembly; the front seat front cross beam assembly in the front floor sill assembly is used as a differential part; the rear enclosure structure in the rear floor assembly is used as a differential part; in the engine compartment assembly, due to the difference in Z-direction height of the vehicle bodies of SD and SUV models, as well as the difference in sitting posture of the human body, the upper part of the front fender body, the front windshield lower cross beam assembly, the front vertical plate assembly, the front end structure assembly, the front wheel cover assembly, and the hood hinge mounting plate assembly are used as differential parts; in the seat assembly, the skeletons of the front seat assembly, the rear seat cushion assembly, and the rear seat backrest assembly are common.

[0006] As a further implementation method, the front fender left support plate, the front fender right support plate, the lower part of the front fender body, the anti-collision beam assembly, the front longitudinal beam assembly, and the front fender cross beam in the engine compartment assembly are common structures.

[0007] As a further implementation, the front floor sill assembly includes left and right sill assemblies and a front floor body connected between the sill assemblies. The sill assemblies are also connected to the front seat rear cross beam, and the front seat rear cross beam is a universal part.

[0008] As a further implementation method, the front longitudinal beam upper cover plate of the front floor sill assembly adopts a bent V-angle design, the bent inclined surface of the front longitudinal beam upper cover plate is welded to the lower part of the front fender body, and the flat surface is welded to the front floor body as a whole; the Y-direction welding positions of the front longitudinal beam upper cover plate on both sides are aligned with the front longitudinal beam assembly.

[0009] As a further implementation method, the front floor threshold assembly includes a front baffle and a middle channel connecting plate with a W-shaped cross-section. The front baffle and the middle channel connecting plate are located between two sets of front longitudinal beam upper cover plates and are welded to the front floor body, and their rear ends are used for welding to the front cross beam assembly of the front seat.

[0010] As a further implementation, the threshold assembly includes a left threshold assembly and a right threshold assembly, and the rear ends of the two threshold assemblies are connected to a threshold reinforcement beam.

[0011] As a further implementation method, the rear floor assembly includes a middle floor assembly, which is connected between the rear longitudinal beam assembly and the rear sill inner panel assembly, and the front end of the rear longitudinal beam body is connected to the rear sill inner panel assembly, and the front end of the rear sill inner panel assembly is connected to the sill reinforcement beam.

[0012] As a further implementation method, the rear floor assembly also includes a rear floor body assembly, whose front end bending surface is overlapped and welded with the rear end bending surface of the middle floor assembly, and the two side surfaces are overlapped on the internal flanges of the rear longitudinal beam assembly respectively, and the rear end of the rear longitudinal beam assembly is connected to the rear connecting plate of the rear floor; the rear enclosure structure is connected to the rear side of the rear connecting plate of the rear floor.

[0013] As a further implementation method, the front seat bottom frame assembly of the SUV model is welded into an I-shaped structure by two supporting longitudinal beams and an intermediate vertical beam, which is used to be fixed with the guide rail of the left front seat assembly on the upper surface of the two longitudinal beams to be pre-assembled into an assembly, and installed between the front seat front cross beam assembly and the front seat rear cross beam assembly; the bottom of the rear seat of the SUV model is installed at the middle floor position on the rear floor assembly through the rear seat bottom frame assembly.

[0014] As a further implementation, the front seat bottom frame assembly of the SUV model is provided with a front seat bottom frame cover.

[0015] The beneficial effects of the present invention are as follows:

[0016] 1. In the engine compartment assembly of the present invention, due to the difference in Z-direction height of the vehicle body between SD and SUV models, as well as the difference in human sitting posture, the upper part of the front fender body, the front windshield lower crossbeam assembly, the front vertical plate assembly, the front end structure assembly, the front wheel cover assembly, and the hood hinge mounting plate assembly are used as differential parts; in order to match the seat structure, the front seat front crossbeam assembly in the front floor sill assembly is used as a differential part, and other structures are common; for the rear floor assembly, the rear enclosure structure is used as a differential part, and other structures are common; the seat frame in the seat assembly is common; the above design can achieve maximum sharing of SD and SUV and can match the different upper body structures of SD and SUV.

[0017] 2. The front baffle and the middle channel connecting plate of the present invention are located between the two groups of front longitudinal beam upper cover plates. The cross section adopts a W-shaped structure and is welded on the front floor body. The rear end section is welded to the front side of the front cross beam assembly of the front seat, thereby enhancing the front floor body's ability to withstand front end extrusion and forming a third transmission path with the front longitudinal beam assemblies on both sides.

[0018] 3. The SD model of the present invention has a front seat front inner mounting bracket welded on the crossbeam body to strengthen the fixing point strength and adjust the seat posture and also have a fixed connection function. The front seat of the SUV model has a seat bottom frame assembly mounting structure and does not require a front seat front inner mounting bracket, so it is made into a different part. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings in the specification, which constitute a part of the present invention, are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0020] Figure 1 is an axonometric schematic diagram of an engine compartment assembly according to an embodiment of the present invention;

[0021] Figure 2 is a top view of an engine compartment assembly in an embodiment of the present invention;

[0022] Figure 3 is a front view of an engine compartment assembly in an embodiment of the present invention;

[0023] Figure 4 is a schematic structural diagram of the upper portion of the front baffle body in an embodiment of the present invention;

[0024] Figure 5 is a top view of a front floor sill assembly in an embodiment of the present invention;

[0025] Figure 6 is a schematic structural diagram of a front longitudinal beam upper cover plate in an embodiment of the present invention;

[0026] Figure 7 is a schematic structural diagram of a front crossbeam assembly of a front seat in an embodiment of the present invention;

[0027] Figure 8 is an axonometric schematic diagram of a front floor sill assembly in an embodiment of the present invention;

[0028] Fig. 9 is a schematic structural diagram of a rear floor assembly in an embodiment of the present invention;

[0029] Fig.10 is an axonometric structural schematic diagram of a rear floor assembly in an embodiment of the present invention;

[0030] Fig.11 is a structural schematic diagram of an SUV seat assembly in an embodiment of the present invention;

[0031] Fig.12 is a schematic structural diagram of an SD seat assembly in an embodiment of the present invention;

[0032] Fig.13 This is a front view of a seat of a SD model in an embodiment of the present invention;

[0033] Fig.14 Schematic diagram of the axonometric structure of the SUV seat assembly in the embodiment of the present invention

[0034] Fig.15 is a schematic structural diagram of a front seat bottom frame assembly in an embodiment of the present invention;

[0035] Fig.16 Schematic diagram of the structure of the rear seat bottom frame assembly in an embodiment of the present invention.

[0036] In the figure: the distances or sizes between parts are exaggerated to show the positions of various parts, and the schematic diagram is for reference only.

[0037] Among them: 1. Engine compartment assembly; 2. Front floor sill assembly, 3. Rear floor assembly;

[0038] 11. Upper part of the front fender body, 12. Lower crossbeam assembly of the front windshield, 13. Left front vertical plate assembly, 14. Right front vertical plate assembly, 15. Left support plate of the front fender, 16. Right support plate of the front fender, 17. Lower part of the front fender body, 18. Front anti-collision beam assembly, 19. Lower anti-collision beam assembly, 110. Front end structure assembly, 111 Right front longitudinal beam assembly, 112. Left front longitudinal beam assembly, 113. Right front wheel cover assembly, 114. Left front wheel cover assembly, 115. Right hinge mounting plate assembly of the engine cover, 116. Left hinge mounting plate assembly of the engine cover, 117. Front fender crossbeam, 118. Upper crossbeam assembly of the heat pump;

[0039] 21. Front longitudinal beam upper cover, 22. Front fender and middle channel connecting plate, 23. Front seat front crossbeam assembly, 24. Battery front middle mounting bracket, 25. Airbag ECU mounting plate, 26. Front seat rear crossbeam assembly, 27. Front floor sill assembly, 28. Front floor rear body, 29. Left sill assembly, 210. Right sill assembly, 211. Left sill reinforcement beam assembly, 212. Right sill reinforcement beam assembly;

[0040] 31. Middle floor assembly, 32. Right door sill inner panel rear assembly, 33. Left door sill inner panel rear assembly, 34. Left rear longitudinal beam assembly, 35. Right rear longitudinal beam assembly, 36. Rear floor body assembly, 37. Rear floor left rear connecting plate, 38. Rear floor storage box assembly, 39. Rear floor right rear connecting plate, 310. Rear floor rear connecting plate, 311. Rear enclosure inner panel assembly, 312. Rear enclosure outer panel assembly, 313. Rear anti-collision beam assembly;

[0041] 41. Left front seat assembly, 42. Right front seat assembly, 44. Left rear seat backrest assembly, 45. Right rear seat backrest assembly, 46. Left front seat bottom frame left cover, 47. Left front seat bottom frame right cover, 48. Right front seat bottom frame left cover, 49. Right front seat bottom frame right cover, 410. Front seat bottom frame rear side cover, 411. Front seat bottom frame assembly, 412. Rear seat bottom frame assembly;

[0042] 51. Left front seat assembly, 52. Right front seat assembly, 54. Left rear seat back assembly, 55. Right rear seat back assembly, 56. Rear seat cushion support assembly. DETAILED DESCRIPTION

[0043] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in the present invention have the same meanings as those commonly understood by those skilled in the art to which the present invention belongs.

[0044] Embodiment 1

[0045] In a typical embodiment of the present invention, reference is made to Figure 1-Figure 16 As shown, a platform lower body and a platform seat structure for SD and SUV, wherein the lower body includes an engine compartment assembly 1, a front floor assembly 2, and a rear floor assembly 3, and the platform seat structure is installed on the floor assembly.

[0046] Specifically, the common parts of the lower body engine compartment assembly 1 of the pure electric SD and SUV are:

[0047] The left support plate of the front fender 15 (universal), the right support plate of the front fender 16 (universal), the lower part of the front fender body 17 (universal), the front anti-collision beam assembly 18 (universal), the lower anti-collision beam assembly 19 (universal), the right front longitudinal beam assembly 111 (universal), the left front longitudinal beam assembly 112 (universal), and the front fender cross beam 117 (universal).

[0048] The differences between the lower body engine compartment assembly of the pure electric SD and SUV are as follows:

[0049] The upper part of the front fender body 11 (difference), the front windshield lower cross beam assembly (difference), the left front vertical plate assembly 13 (difference), the right front vertical plate assembly 14 (difference), the front end structure assembly 110 (difference), the right front wheel cover assembly 113 (difference), the left front wheel cover assembly 114 (difference), the bonnet right hinge mounting plate assembly 115 (difference), and the bonnet left hinge mounting plate assembly 116 (difference).

[0050] like Figure 1-Figure 4 As shown, the upper part 11 of the front fender body is stamped with sheet metal, and the two sides are bent into an obtuse structure. The body is provided with multiple installation and process holes, from left to right, the battery positive wire harness through round hole, process special-shaped weight reduction and reinforcement structure hole, steering intermediate shaft assembly through round hole, integrated brake controller assembly through round hole, automatic three-zone air conditioning HVAC assembly vertical square water pipe through hole, automatic three-zone air conditioning HVAC assembly horizontal waist-shaped air conditioning pipe through hole, automatic three-zone air conditioning HVAC assembly horizontal square air intake duct through hole and several process holes and installation holes. Due to the difference in the Z-direction height of the body of SD and SUV models, and the difference in the sitting posture of the human body (the sitting posture of the SUV human body is higher than that of the SD), the position of the intermediate shaft of the steering system is different, and the upper part 11 of the front fender body is a different part.

[0051] The front windshield lower cross beam assembly 12 is formed by crimping and welding the flanges of the front windshield upper cross beam body and the front windshield lower cross beam body to form a semi-circular arc structure welded body. The two end faces are respectively welded to the left front vertical plate assembly 13 and the right front vertical plate assembly 14, and the lower end face is welded to the upper part of the front baffle body 11 in the X direction. There are multiple reinforcing ribs on the upper surface and inclined surface of the body. The upper surface of the front windshield upper cross beam body is provided with an instrument panel fixing bracket for fixing the instrument panel decoration, and the lower surface of the front windshield lower cross beam body is provided with a wiper motor mounting bracket and a wiper motor mounting bracket for fixing the front wiper system. Due to differences in human sitting postures, the matching angle between the front windshield glass assembly and the front windshield lower cross beam assembly 12 needs to be adjusted to meet the field of vision requirements. The angle of SUV is increased on the basis of SD, so the front windshield lower cross beam assembly 12 is made into a differential part.

[0052] The left front vertical plate assembly 13 is welded from top to bottom to the front windshield lower cross beam assembly 12, the front fender body upper part 11, the front fender body lower part 17, and the front fender left support plate 15 assembly. The left front wheel cover assembly 114, the left front wheel cover upper reinforcement beam outer plate middle assembly, the left door sill assembly 29 (universal), and the left side panel assembly are welded from top to bottom to the left front vertical plate assembly 13. The left front vertical plate assembly 13 adopts an inner flange structure on the top surface to perform normal crimping welding with the front windshield lower cross beam assembly 12 in the XZ plane. The left front vertical plate assembly 13 adopts an outer flange structure on the side surface to perform positive Y-direction buckling welding with the left side panel assembly. The body is strengthened and the weight is reduced by opening process circular holes and rectangular holes and reinforcing rib structures. After the sitting posture of the human body is adjusted, in order to meet the comfort of the head space, the Z-direction dimension of the interior of the SUV cabin is increased, and the Z-direction height of the left front vertical plate assembly 13 of the SUV is increased in the Z-direction to match and weld with the left side surround assembly of the SUV.

[0053] The right front vertical plate assembly 14 is symmetrical in structure to the left front vertical plate assembly 13 and is also symmetrically arranged with other structural connection forms.

[0054] The left support plate 15 of the front fender (universal) adopts an arc triangle design, and the Z-direction height of the cross section increases uniformly and excessively. The Z-direction section is the largest at the welding and fastening with the left front vertical plate assembly 13, and the Z-direction section is the smallest at the rightmost welding with the lower part 17 of the front fender body. It is staggeredly welded with the front fender cross beam 117 and the lower part 17 of the front fender body to form a welded body. The triangular welded body here can strengthen the structure and reduce the risk of extrusion deformation and cracking when it is squeezed from the front and left sides. Due to the same longitudinal beam width and longitudinal beam, the left support plate 15 of the front fender of SD and SUV can be made into a universal part. The structural form and connection form of the right support plate 16 (universal) of the front fender are symmetrically designed with the left support plate 15 (universal) of the front fender.

[0055] The lower part 17 (universal) of the front fender body is designed with two rivet welding holes and mounting holes on the upper part, which are welded and fixed to the front fender cross beam 117 by rivet. By increasing the welding points in the middle, the strength can be improved and the risk of cracking can be reduced. The two sides also adopt the same bending angle as the upper part 11 of the front fender body. The triangular bending shape on both sides can ensure that the lower part 17 of the front fender body and the upper part 11 of the front fender body are welded together. The bending structure of the welded body on both sides can improve the local deformation of the extrusion force transmitted by the right front longitudinal beam assembly 111 (universal) and the left front longitudinal beam assembly 112 (universal) when the front compartment is squeezed. The front fender body is split into upper and lower bodies, and the lower body is universal, while the upper body is different to meet the upper body differences of SD and SUV.

[0056] The front anti-collision beam assembly 18 (universal) adopts an arc-shaped rectangular tube structure to meet the three-dimensional curved surface of the front bumper. The inside of the rectangular tube has a welded reinforcing rib structure to effectively strengthen the structural strength of the main body. Four L-shaped brackets are welded on the upper part to fix the front bumper body. Two groups of four rivet bolts are provided on the lower part of both sides to fix the front bumper cross beam installation connection outer plate to form an integral structure after being connected with the lower anti-collision beam assembly 19, which effectively increases the force area of ​​the pedestrian's legs and can improve the pedestrian protection score. Two rectangular energy absorption boxes are welded on both sides of the arc-shaped rectangular tube (by punching a number of through holes at the rounded corners around the rectangular tube, it can be bent and weakened to absorb the collision energy when a collision occurs). A square installation end plate is welded on the end face of the rectangular tube. The above welding together constitutes the front anti-collision beam assembly 18. There are four installation holes on both sides of the anti-collision beam end plate, which are respectively connected to the right front longitudinal beam assembly and the left front longitudinal beam assembly to form an integral structure with the whole vehicle.

[0057] The lower anti-collision beam assembly 19 (universal) adopts an arc-shaped rectangular tube structure to meet the three-dimensional curved surface of the front bumper. Two groups of four rivet bolts are provided on both sides to fix the front bumper crossbeam to install and connect the outer plate. After connecting with the front anti-collision beam assembly 18, it forms an integral structure to effectively increase the force area of ​​pedestrian legs and improve the pedestrian protection score. Two rectangular energy absorption boxes are welded on both sides of the arc-shaped rectangular tube (by punching a number of through holes at the rounded corners around the rectangular tube, it can be bent and weakened to absorb the collision energy when a collision occurs). A triangular mounting end plate is welded on the end face of the rectangular tube, and the above welding together constitutes the lower anti-collision beam assembly 19. There are three mounting holes on both sides of the anti-collision beam end plate to connect with the front subframe assembly to form an integral part of the vehicle.

[0058] The front end structure assembly 110 is a plastic frame with a U-shaped outer contour and a V-shaped inner contour. The two sections are thin-walled squares with square holes and four mounting bolts. The front end structure assembly 110 is fixed in series with the front anti-collision beam assembly 18, the left front longitudinal beam assembly 112, and the right front longitudinal beam assembly 111 in the X direction by bolts. The directional hole structure design in the middle can ensure that the front anti-collision beam assembly 18 is effectively docked with the left front longitudinal beam assembly 112 and the right front longitudinal beam assembly 111. Two fixing holes are designed in the middle to fix the middle support so as to be fixedly connected with the middle of the front anti-collision beam assembly 18 to play a supporting role. There are a total of 10 holes on the upper surface, four of the six holes in the middle are threaded holes and two are positioning holes, which are used to position and fix the upper grille reinforcement bracket (indirectly fix the front signal light assembly and the front bumper assembly), and the two sets of holes on both sides respectively fix the right front headlight assembly and the left front headlight assembly.

[0059] The front structure assembly 110 is fixed by two groups of eight bolts at both ends and two bolts in the middle to form a triangular fixed structure, which can effectively ensure the installation accuracy and position of the right front headlight assembly, the left front headlight assembly, the front signal light assembly and the front bumper assembly. The front cover lock system is fixed by bolts on the inner surface of the front structure assembly 110 to support the hood. Due to the difference in hood height between SD and SUV, the hood will be raised when the SUV body posture is raised, resulting in the Z-axis height of the front structure assembly 110 being increased, so a differential part is made.

[0060] The right front longitudinal beam assembly 111 (universal) is a rectangular tube structure formed by welding the right front longitudinal beam body and the right front longitudinal beam cover assembly. The Y-direction opening size of the welded structure at the front end is larger than the opening size at the rear end. The overall structure is an R-shaped structure. The opening area is increased by increasing the Y-direction opening size of the front end surface, thereby increasing the docking interface area between the front anti-collision beam assembly 18 and the right front longitudinal beam assembly 111 (increasing the cross-section and volume of the energy absorption box), thereby increasing the force-bearing area and improving the energy absorption effect.

[0061] The upper surface of the front R end surface of the rectangular structure provides more welding area for the right front longitudinal beam wheel house connecting beam assembly in the Y direction to improve the strength of the welding structure. The right front longitudinal beam wheel house connecting beam assembly provides an installation and fixing point for the right fender. The lower surface of the front R end surface of the rectangular structure is welded to the lower surface of the right front longitudinal beam wheel house connecting beam assembly. The lower surface of the right front longitudinal beam wheel house connecting beam assembly is embedded with a welded subframe mounting nut seat, and the subframe mounting nut seat is connected to the front mounting hole on the right side of the front subframe assembly through bolts. The welded rectangular upper plane is provided to the compressor bracket crossbeam base mounting hole, the high-voltage electric heater bracket mounting hole, the right front wheel cover assembly 113 welding plane and welding point in turn, the right front longitudinal beam support plate and the front fender triangular beam right connecting bracket are welded at the root of the rear end face of the rectangular structure (the structure is in an eight-shaped shape, which can effectively fit with the upper part 11 of the front fender body and the lower part 17 of the front fender body, increase the force-bearing area to make the force uniform, improve the structural strength and the transmission path of the collision force), the front subframe right rear mounting reinforcement plate and the front subframe right rear mounting reinforcement plate are welded at the root of the rear end face of the rectangular structure, and then welded to the front fender crossbeam 117 and the lower part of the front fender body 17, and then welded to the right door sill connecting plate to form the right front longitudinal beam assembly 111. The right front longitudinal beam assembly 111 is welded to the front fender cross beam 117 by means of groove buckling, and forms four welding and oblique supports with the oblique surface of the lower part 17 of the front fender body, and is welded to the right door sill connecting plate to form an integral body. The design of such buckling and four oblique supports can effectively maintain the strength and rigidity of the longitudinal beam along the X direction. The structure of the left front longitudinal beam assembly 112 (universal) is the same and symmetrical to the right front longitudinal beam assembly 111 (universal), and the connection form with other structures is also symmetrical to the right front longitudinal beam assembly 111 (universal), and will not be repeated.

[0062] The right front wheel cover assembly 113 is welded by a right front shock absorber seat (universal), a right front wheel cover side reinforcement beam (universal), a right front wheel cover rear end plate (universal), and a rear part of the right front wheel cover side reinforcement beam (different). The right front shock absorber seat is designed with a protruding bag and a waist-shaped hole, a large round hole, a special-shaped triangular hole and a mounting bolt structure. Three waist-shaped mounting holes evenly distributed around the large round hole are fixed to the right front air spring assembly through bolts to connect the upper body and the lower body. At the same time, the large round hole in the middle can ensure that the vehicle can pass through a pit or When crossing a bump or other working conditions, the right front air spring assembly is prevented from colliding or interfering with the right front wheel cover assembly 113 due to the downward pressure of the upper vehicle body or the upward jump of the suspension system, causing abnormal noise and faults in the process. The special-shaped triangular hole outside the circular hole has the same function as the circular hole, which can avoid colliding or interfering with the right upper front control arm assembly and the right upper rear control arm assembly, causing abnormal noise and faults in the process. The three circular mounting holes of the large circular hole interior are connected to the heat pump upper crossbeam assembly 118 by bolts to improve the torsional rigidity of the whole vehicle. The right front wheel cover assembly 113 is welded with the right front longitudinal beam assembly 111 (common), the upper part of the front fender body 11, and the right vertical plate body of the front cabin to form an inverted U-shaped structure with a lower seal. Due to the lifting of the hood, the rear part of the right front wheel cover side reinforcement beam of the right front wheel cover assembly 113 is raised in the Z direction and welded to the right front vertical plate assembly 14, and the rest of the right front shock absorber seat (common), the right front wheel cover side reinforcement beam (common), and the right front wheel cover rear end plate (common) are all common. The structure and connection form of the left front wheel cover assembly 114 are symmetrical with those of the right front wheel cover assembly 113.

[0063] The right hinge mounting plate assembly 115 of the bonnet is a triangle with two bent flanges and a groove structure. The upper outer flange is pressed on the upper surface of the flange of the right front vertical plate assembly 14 for welding, and the lower flange is welded to the outer surface of the rear end plate of the right front wheel cover assembly 113. The vertical surface of the groove structure is fastened to the right hinge mounting bracket assembly of the bonnet by bolts, and is used to fix the right hinge assembly of the bonnet and the bonnet, and fix the right mounting bracket of the bonnet gas spring and the right gas spring assembly of the bonnet on the outer surface of the body. Due to the difference in Z-direction height between SD and SUV, and the difference in Z-direction size and cross-section of the triangular structure, a differential part is made. The structure and connection form of the left hinge mounting plate assembly 116 of the bonnet are symmetrical with those of the right hinge mounting plate assembly 115 of the bonnet, and it is also made into a differential part.

[0064] The front fender crossbeam 117 (universal) is welded at the lower part of the front fender (firewall) of the engine compartment, and is welded with the left front wheel housing longitudinal beam assembly and the right front wheel housing longitudinal beam assembly to form a welded assembly. The reverse concave structure design can better absorb energy and deformation when a front collision and a small offset collision occur. The crossbeam adopts a W-shaped structure and fits tightly with the lower part of the front fender body 17 (universal). At the same time, the body adopts a groove structure to increase the body strength. Because the lower part of the front fender body 17 is universal, and the right front longitudinal beam assembly 111 and the left front longitudinal beam assembly 112 are both universal parts that are clamped on the front fender crossbeam 117, the surrounding boundaries are all the same as universal parts.

[0065] The heat pump upper crossbeam assembly 118 connects the right front wheel cover assembly 113 and the left front wheel cover assembly 114 so that the left and right sides are connected into a rigid body, which is used to improve the mode and rigidity of the whole vehicle, has better anti-torsion ability, and is used as a differential part.

[0066] The pure electric SD and SUV platform lower body front floor sill assembly 2 includes:

[0067] Front longitudinal beam upper cover 21 (universal), front fender and center channel connecting plate 22 (universal), front seat front cross beam assembly 23 (different), battery front middle mounting bracket 24 (universal), airbag ECU mounting plate 25 (universal), front seat rear cross beam assembly 26 (universal), front floor body 27 (universal), front floor rear body 28 (universal), left door sill assembly 29 (universal), right door sill assembly 210 (universal), left door sill reinforcement beam assembly 211 (universal), right door sill reinforcement beam assembly 212 (universal).

[0068] like Figure 5-Figure 8 As shown, the front longitudinal beam upper cover 21 (universal) adopts a bending V-angle design, and the bending angle is the same as that of the lower part of the front fender body 17. The front longitudinal beam upper cover 21 is welded to the lower part of the front fender body 17 at the bending slope, and is welded to the front floor body 27 at the flat surface. The front longitudinal beam upper cover 21 is welded to the lower part of the front fender body 17 and the front floor body 27 to form an integral structure, and the Y-direction welding positions of the front longitudinal beam upper cover 21 on both sides are respectively aligned with the Y-direction of the front longitudinal beam assembly, which can effectively transmit the extrusion force of the front longitudinal beam assembly from the engine compartment to the middle and rear areas of the vehicle body.

[0069] The front fender and middle channel connecting plate 22 (common) is located between the two groups of front longitudinal beam upper cover plates 21. The cross section adopts a W-shaped structure and is welded on the front floor body 27. The rear end section is welded to the front side of the front seat front cross beam assembly 23 to strengthen the front floor body 27's ability to withstand front-end extrusion and form a third transmission path with the left front longitudinal beam assembly 112 and the right front longitudinal beam assembly 111 on both sides. The W-shaped groove in the middle can increase the strength of the welding with the front floor body 27, and the rear end plane of the front fender and middle channel connecting plate 22 provides four nut holes for fixing the combined inertial navigation, and the front end plane provides two riveted welding studs for fixing the vehicle domain controller bracket.

[0070] The front crossbeam assembly 23 of the front seat has a C-shaped groove with a flanging structure in cross section. It is fastened to the front floor body 27 and welded, and the front end surface is spliced ​​and welded to the two sets of front longitudinal beam upper cover plates 21, the front baffle and the middle channel connecting plate 22. The crossbeam here can improve the side extrusion capacity of the vehicle body and can transmit the extrusion force in three longitudinal paths. And it can provide a total of four fixing points for the left front seat and the right front seat. The SD model has a front seat front inner mounting bracket welded on the crossbeam body to reinforce the strength of the fixing point and adjust the seat posture, and it also has a fixed connection function. The front seats of the SUV model are equipped with a seat bottom frame assembly installation structure and do not require a front seat front inner mounting bracket, so it is made into a difference part.

[0071] A bracket 24 (universal) is installed in the front of the battery, the bottom surface is welded to the front floor body 27, the rear end surface is welded to the front seat rear crossbeam assembly 26, and the front end surface is welded to the front seat front crossbeam assembly 23. The internal cavity has welded nuts for fixing the power battery pack assembly. The middle internal crossbeam of the power battery pack assembly is combined with the lower body by bolts to form a rigid body to enhance the side anti-extrusion ability.

[0072] The airbag ECU mounting plate 25 (universal) has its bottom surface welded to the front floor body 27, and its rear end surface welded to the middle position of the front side of the front seat rear cross beam assembly 26. The upper surface has five bosses and two grooves. The first three bosses have three corresponding welding nuts for fixing the airbag controller assembly, and the rear two bosses have two corresponding welding nuts for fixing the armrest box bracket assembly, and the grooves leave space for installation.

[0073] The front seat rear cross beam assembly 26 (universal) has its bottom end face welded to the front floor body 27, and its left and right end faces are welded to the inner surfaces of the left door sill assembly 29 and the right door sill assembly 210, respectively. The front end face is welded to the four battery front middle mounting brackets 24 and the airbag ECU mounting plate 25, respectively, wherein the number of battery front middle mounting brackets 24 on the left and right sides of the airbag ECU mounting plate 25 is the same. The upper surface of the front seat rear cross beam assembly 26 (universal) provides two groups of four welding nuts and four locating pins for fixing the left front seat assembly and the right front seat assembly. The front seat rear cross beam assembly 26 (universal) and the front seat front cross beam assembly 23 bear the side extrusion together, and strengthen the structural strength of the front floor body 27, and are used to fix and bear the weight of seats, passengers, batteries, fuel tanks, etc.

[0074] The front floor body 27 (universal) has two front longitudinal beam upper covers 21, front baffle and middle channel connecting plate 22, front seat front crossbeam assembly 23, four battery front middle mounting brackets 24, airbag ECU mounting plate 25, and front seat rear crossbeam assembly 26 welded on the upper surface from front to rear. The two sides are used for welding with the left front vertical plate assembly 13, the right front vertical plate assembly 14, the left door sill assembly 29 (universal), and the right door sill assembly 210 (universal). The front end surface overlaps and rivets with the lower part of the front baffle body 17, and the rear end surface overlaps and rivets with the rear body 28 of the front floor. There are folded flanges with a 90° upward angle in the Z direction on both sides.

[0075] The front floor rear body 28 (universal), the front end surface is overlapped with the front floor threshold assembly 2 (universal) and riveted and welded, the two side end surfaces are respectively welded with the left threshold assembly 29 (universal), the right threshold assembly 210 (universal), the left threshold inner panel rear assembly 33 (universal), and the right threshold inner panel rear assembly 32 (universal), and the rear end surface is crimped and welded with the middle floor cross beam assembly, the left rear longitudinal beam body, and the right rear longitudinal beam body. The front floor rear body 28 has a Z-direction bending flange at the rear end. By adjusting the flange height, it can adapt to the different Z-direction height requirements of EV batteries and REEV fuel tanks. It has a Z-direction bending flange with an upward angle of 90° on both sides. Here, SD and SUV are both pure electric models and can be made into universal parts.

[0076] The left door sill assembly 29 (universal) is composed of a left door sill connecting plate (with a flange structure butt-welded to the left side panel assembly at the lower left corner) and a left door sill inner panel body (C-shaped groove with 90° outer flange bending structures on both sides and two 46° bending structures in the middle) through nested press welding. The welded structure is reinforced by adding a welded left door sill inner panel reinforcement plate at the second flange and the joint. There are four holes on the lower surface of the C-shaped groove of the left door sill inner panel body corresponding to the welding of four battery pack installation reinforcement plate assemblies (with welding nuts for fixing the side surface of the power battery pack assembly). The four single-sided fixing points here are common for the extended-range and pure electric vehicles. The assembly hanger reinforcement plate is welded to the end of the lower surface of the welded body. The right door sill assembly 210 (universal) is symmetrically arranged with the left door sill assembly 29 (universal).

[0077] The left sill reinforcement beam assembly 211 (universal) is connected to the rear end of the left sill assembly 29 (universal). The structure is a rectangular steel with two reinforcing vertical ribs inside. It is cut into a 45° angle at the end. Four sill connecting plates are evenly distributed on the lower surface. The two middle sill connecting plates are welded to the lower surface of the left sill reinforcement beam assembly 211 (universal) by riveting, and the two outer sill connecting plates are fixed to the lower surface of the left sill reinforcement beam assembly 211 (universal) by bolts. The left sill reinforcement beam assembly 211 (universal) is welded to the second flange of the left sill assembly 29 (universal) by four sill connecting plates. It is fixed to the front upper area of ​​the side of the left sill assembly 29 (universal) through the front fixing holes and fixing bolts. The right sill reinforcement beam assembly 212 (universal) is symmetrically arranged with the left sill reinforcement beam assembly 211 (universal).

[0078] Pure electric SD and SUV lower body rear floor assembly 3:

[0079] like Figure 9-10 As shown, the middle floor assembly 31 (universal) is welded by snapping together the middle floor crossbeam assembly and the middle floor body assembly. The middle floor crossbeam assembly has a lower flange and an upper flange. The lower flange is welded to the flange of the rear body 28 of the front floor, and the upper flange is snap-welded to the middle floor body assembly. Two holes are provided on both sides of the middle floor crossbeam assembly, which are respectively fixed to the front end flanges of the left rear longitudinal beam body and the right rear longitudinal beam body castings by flow drill screws. The two sides of the middle floor body assembly are respectively welded to the left rear longitudinal beam body and the right rear longitudinal beam body and fastened with flow drill screws. The oblique flange of the middle floor assembly 31 is fastened to the rear floor body assembly 36 and the two sides of the left rear longitudinal beam body and the right rear longitudinal beam body by welding and flow drill screws.

[0080] The right sill inner panel rear assembly 32 (universal) is embedded and buckled into the inside of the bayonet of the right rear longitudinal beam body for welding, the outer flange of the right sill inner panel rear assembly 32 (universal) is butt-welded with the inner flange of the right side surround assembly, and a lifting bracket is welded to the lower plane of the right sill inner panel rear assembly (universal). The left sill inner panel rear assembly 33 (universal) is symmetrically arranged with the right sill inner panel rear assembly 32 (universal).

[0081] The left rear longitudinal beam assembly 34 (universal), the outer groove of the longitudinal beam of the front section of the main body is welded and screwed after being clamped with the left sill inner panel rear assembly 33 (universal), the upper surface of the groove has a mounting hole, which is connected to the convex welding nut on the upper inner surface of the left sill inner panel rear assembly 33 (universal) by bolts, and the lower groove is a sloped structure that is more conducive to absorbing tolerances, so that the left rear longitudinal beam main body (universal) and the left sill inner panel rear assembly 33 (universal) are easier to buckle together, the slope of the lower groove of the left rear longitudinal beam main body (universal) is connected to the slope of the left sill inner panel rear assembly 33 (universal) by welding, and the honeycomb structure inside the longitudinal beam can effectively increase strength and reduce weight and cost. At the same time, a mounting threaded hole is provided on the side, and the left sill inner panel rear assembly 33 (universal) is connected and fastened with the threaded hole of the internal honeycomb structure of the left rear longitudinal beam main body (universal) by bolts. The middle section of the body is a semicircular arc structure, avoiding the left rear tire envelope to meet the clearance requirements of the vehicle driving conditions and the tire. The honeycomb structure is used inside to reduce weight and provide a fixing point for the wheel cover. The longitudinal beam of the rear section of the body is used to connect the rear anti-collision beam assembly 313 and support the rear floor left rear connecting plate 37 and the rear floor storage box assembly 38. The right rear longitudinal beam assembly 35 (universal) is mainly composed of the right rear longitudinal beam body, and the structural form and corresponding connection form are symmetrically designed with the left rear longitudinal beam assembly 34 (universal).

[0082] The front bending surface of the rear floor body assembly 36 (common) is overlapped and welded with the rear bending surface of the middle floor assembly 31 and fastened with flow drill screws. The two side surfaces are overlapped on the inner flanges of the left rear longitudinal beam assembly 34 and the right rear longitudinal beam assembly 35 respectively and fastened by welding and flow drill screws. The rear end surface provides support and fixation for the rear floor storage box assembly 38. The rear floor body assembly 36 forms a C-ring reinforcement beam by welding the upper floor cross beam body and the rear floor cross beam left connecting plate assembly on the left rear longitudinal beam body and the rear floor cross beam right connecting plate assembly on the right rear longitudinal beam body to improve the torsional strength of the vehicle body at the rear.

[0083] The rear left connecting plate 37 (universal) of the rear floor has its front end bent and overlapped with the left rear longitudinal beam body and connected by welding, its side edge overlapped with the left rear longitudinal beam body and fastened by bolts (sharing the fastening point with the left flange of the rear floor storage box assembly 38), and its rear end flange is welded to the rear inner panel assembly 311. The rear right connecting plate 39 (universal) of the rear floor has a symmetrical design in terms of structure and connection relationship with the rear left connecting plate 37 (universal) of the rear floor.

[0084] The rear floor storage box assembly 38 (universal) has its front flange overlapped on the upper surface of the rear floor body assembly 36 and fastened by bolts, and its two side flanges overlapped on the upper surfaces of the rear floor left rear connection plate 37 (universal) and the rear floor right rear connection plate 39 and fastened by bolts, and its rear end flange overlapped on the upper surface of the rear floor rear connection plate 310 and fastened by bolts. The rear floor rear connection plate 310 (universal) has its two side end bottom planes overlapped on the upper planes of the rear floor left rear connection plate 37 (universal) and the rear floor right rear connection plate 39 and fastened by bolts, and its rear end flange is welded to the overlapped overlapped portion of the rear end flanges of the rear floor left rear connection plate 37 (universal) and the rear floor right rear connection plate 39.

[0085] The inner surface of the rear panel assembly 311 is welded to the rear end faces of the rear floor left rear connecting plate 37 (common), rear floor rear connecting plate 310 (common), and rear floor right rear connecting plate 39. The left side is clamped between the left rear longitudinal beam assembly 34 and the rear anti-collision beam assembly 313 and fixed by bolts. The right side is clamped between the right rear longitudinal beam assembly 35 and the rear anti-collision beam assembly 313 and fixed by bolts. Due to the need to match and fix the rear bumper body assembly, the different parts are made according to the rear bumper shape.

[0086] The rear outer panel assembly 312 has two flange structures on the upper and lower sides. The first flange is used to strengthen the body strength. The second flange is respectively connected and welded with the flange of the rear inner panel assembly 311. Four rear bumper upper fixing brackets are welded on the surface of the middle groove to fix the rear bumper assembly. The left side of the welded body of the rear inner panel assembly 311 (universal) and the rear outer panel assembly 312 (universal) is clamped between the left rear longitudinal beam assembly 34 and the rear anti-collision beam assembly 313 and fixed by bolts, and the right side is clamped between the right rear longitudinal beam assembly 35 and the rear anti-collision beam assembly 313 and fixed by bolts. In order to match and fix the rear bumper body assembly, the difference parts are made according to the rear bumper shape.

[0087] The rear bumper beam assembly 313 is welded by the rear bumper beam left mounting plate (welded rear bumper left mounting bracket), the rear bumper beam right mounting plate (welded rear bumper right mounting bracket), the rear bumper beam upper energy absorption box, the rear bumper beam lower energy absorption box, and the rear bumper beam body (welded rear bumper left lower mounting bracket). The rear bumper beam upper energy absorption box and the rear bumper beam lower energy absorption box are butt-welded to form a welded body and are welded to the rear bumper beam left mounting plate and the rear bumper beam right mounting plate. The two welded bodies are welded on both sides of the inner plane of the rear bumper beam body. The upper and lower surfaces of the rear bumper beam upper energy absorption box and the rear bumper beam lower energy absorption box are provided with waist-shaped holes and round holes, which can be deformed and absorb energy when squeezed at the rear. In order to match and fix the rear bumper body assembly, the differential parts are made according to the rear bumper shape.

[0088] The pure electric SD seat assembly:

[0089] It includes a left front seat assembly 51 (universal frame), a right front seat assembly 52 (universal frame), a rear seat cushion assembly (universal frame), a left rear seat backrest assembly 54 (universal frame), a right rear seat backrest assembly 55 (universal frame), and a rear seat cushion support assembly 56.

[0090] The pure electric SUV seat assembly:

[0091] It includes a left front seat assembly 41 (universal frame), a right front seat assembly 42 (universal frame), a rear seat cushion assembly, a left rear seat backrest assembly 44, a right rear seat backrest assembly 45, a seat bottom frame cover assembly, a front seat bottom frame assembly 411, and a rear seat bottom frame assembly 412.

[0092] In the SUV seat assembly and the SD seat assembly: the frame structures of the left front seat assembly 51 and the left front seat assembly 41, the right front seat assembly 52 and the right front seat assembly 42, the left rear seat back assembly 54 and the left rear seat back assembly 44, the right rear seat back assembly 55 (common frame) and the right rear seat back assembly 45 are common. Due to the need for foaming, the modeling effect and color need to be differentiated, and the remaining components are made into common parts.

[0093] Rear seat cushion support assembly 56, EPP foam is used to connect the lower body frame and the frame of the rear seat cushion assembly, and is used as a differential part.

[0094] like Fig.14 As shown, in the pure electric SUV seat assembly: the left front seat bottom frame left cover 46, the left front seat bottom frame right cover 47, the right front seat bottom frame left cover 48, and the right front seat bottom frame right cover 49 are added separately for SUV models. The body is sleeved outside the longitudinal beam of the front seat bottom frame assembly 411, and the rear end head has a clamping structure and is clamped and docked with the front seat bottom frame rear side cover 410. The clamped assembly is used to cover the front left seat bottom frame assembly to make the assembly more beautiful, and at the same time, it can prevent the human body from touching the metal structure.

[0095] like Fig.15 As shown, the pure electric SUV seat assembly includes a front seat bottom frame assembly 411, which is an I-shaped structure formed by welding two supporting longitudinal beams and an intermediate vertical beam. The guide rail of the left front seat assembly (common to the frame) is fixed on the upper surface of the two longitudinal beams and pre-assembled into an assembly. The lower surface of the front plane of the longitudinal beam of the assembly is fixed on the upper surface of the front seat front cross beam assembly 23, and the lower surface of the rear plane is fixed on the upper surface of the front seat rear cross beam assembly 26, thereby being fixed to the lower body front floor body 27. The sitting posture of the front passenger can be adjusted by the Z-direction height difference of the supporting longitudinal beam.

[0096] like Fig.16As shown, the rear seat bottom frame assembly 412 is formed by bending a round tube and welding the ends to form a closed "D"-shaped structure. The structure is similar to the peripheral boundary of the rear seat cushion assembly. A straight round tube is welded in the middle to strengthen the torsional strength and rigidity of the D-shaped frame. Thin steel wires are evenly welded inside the bottom frame to enhance the overall structural strength of the frame. A flat plate structure is welded on the steel wire to fix the blower for seat ventilation. Three supports are welded alternately on the two thick round tubes at the front end of the bottom frame. The supports are fixed to the side surface and upper surface of the middle floor crossbeam body in an inverted "7" shape. Bolts are fixed on the side surface (for easy process assembly). Three L-shaped supports are fixed on a thick round tube at the rear end of the bottom frame. The lower surface of the support is fixed to the lower surface of the middle floor body assembly. The sitting posture of the second row of passengers can be adjusted by the Z-direction height difference of the support.

[0097] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A platform lower body and platform seat structure for SD and SUV, characterized in that: It includes a lower body structure and a seat assembly, wherein the lower body structure includes a front floor sill assembly, a rear floor assembly, and an engine compartment assembly; the front seat front cross beam assembly in the front floor sill assembly is used as a differential part; the rear enclosure structure in the rear floor assembly is used as a differential part; in the engine compartment assembly, due to the difference in Z-direction height of the body between SD and SUV models, as well as the difference in human sitting posture, the upper part of the front fender body, the front windshield lower cross beam assembly, the front vertical plate assembly, the front end structure assembly, the front wheel cover assembly, and the hood hinge mounting plate assembly are used as differential parts; in the seat assembly, the skeletons of the front seat assembly, the rear seat cushion assembly, and the rear seat backrest assembly are common.

2. The SD and SUV platform lower body and platform seat structure according to claim 1, characterized in that: The front fender left support plate, the front fender right support plate, the lower part of the front fender body, the anti-collision beam assembly, the front longitudinal beam assembly, and the front fender cross beam in the engine compartment assembly are common structures.

3. The SD and SUV platform lower body and platform seat structure according to claim 2, characterized in that: The front floor threshold assembly comprises threshold assemblies on the left and right sides and a front floor body connected between the threshold assemblies. The threshold assemblies are also connected to the rear cross beam of the front seats, and the rear cross beam of the front seats is a universal part.

4. The SD and SUV platform lower body and platform seat structure according to claim 3, characterized in that: The front longitudinal beam upper cover plate of the front floor sill assembly adopts a bent V-angle design. The bent inclined surface of the front longitudinal beam upper cover plate is welded to the lower part of the front baffle body, and the flat surface is welded to the front floor body as a whole; the Y-direction welding positions of the front longitudinal beam upper cover plate on both sides are aligned with the front longitudinal beam assembly.

5. The SD and SUV platform lower body and platform seat structure according to claim 4, characterized in that: The front floor threshold assembly includes a front baffle with a W-shaped cross-section and a middle channel connecting plate. The front baffle and the middle channel connecting plate are located between two sets of front longitudinal beam upper cover plates and are welded to the front floor body. The rear end thereof is used for welding to the front cross beam assembly of the front seat.

6. The SD and SUV platform lower body and platform seat structure according to claim 3, characterized in that: The threshold assembly comprises a left threshold assembly and a right threshold assembly, and the rear ends of the two threshold assemblies are connected to a threshold reinforcement beam.

7. The SD and SUV platform lower body and platform seat structure according to claim 6, characterized in that: The rear floor assembly includes a middle floor assembly, which is connected between the rear longitudinal beam assembly and the rear sill inner panel assembly, and the front end of the rear longitudinal beam body is connected to the rear sill inner panel assembly, and the front end of the rear sill inner panel assembly is connected to the sill reinforcement beam.

8. The SD and SUV platform lower body and platform seat structure according to claim 7, characterized in that: The rear floor assembly also includes a rear floor body assembly, whose front end bending surface is overlapped and welded with the rear end bending surface of the middle floor assembly, and the two side surfaces are overlapped on the inner flange of the rear longitudinal beam assembly respectively, and the rear end of the rear longitudinal beam assembly is connected to the rear connecting plate of the rear floor; the rear enclosure structure is connected to the rear side of the rear connecting plate of the rear floor.

9. The SD and SUV platform lower body and platform seat structure according to claim 1, characterized in that: The front seat bottom frame assembly of the SUV model is welded by two supporting longitudinal beams and an intermediate vertical beam to form an I-shaped structure, which is used to be fixed with the guide rail of the left front seat assembly on the upper surface of the two longitudinal beams to be pre-assembled into an assembly, and installed between the front seat front cross beam assembly and the front seat rear cross beam assembly; the bottom of the rear seat of the SUV model is installed at the middle floor position on the rear floor assembly through the rear seat bottom frame assembly.

10. The SD and SUV platform lower body and platform seat structure according to claim 9, characterized in that: The front seat bottom frame assembly of the SUV model is equipped with a front seat bottom frame cover.

Images