Rear floor reinforcing structure provided with two rows of seats and vehicle

Abstract

The invention relates to a rear floor reinforcing structure provided with two rows of seats and a vehicle, and the rear floor reinforcing structure comprises a vehicle body chassis which comprises a left rear longitudinal beam assembly, a right rear longitudinal beam assembly and a rear floor middle cross beam assembly, the left rear longitudinal beam assembly and the right rear longitudinal beam assembly are longitudinally arranged, and the rear floor middle cross beam assembly is transversely arranged and fixedly connected between the left rear longitudinal beam assembly and the right rear longitudinal beam assembly; and the rear floor assembly comprises a rear floor fixed above the rear floor middle cross beam assembly and two rows of seat reinforcing beams fixed at the top of the rear floor, and the two rows of seat reinforcing beams are positioned right above the middle part of the rear floor middle cross beam assembly. The two-row seat reinforcing beam is designed on the top face of the rear floor and located at the position of the rear installation point of the two-row seat, and the two-row seat reinforcing beam and the rear floor are welded to form the rear floor assembly. And the rear floor middle cross beam assembly is welded with the rear floor assembly, so that the rear floor assembly is connected with the rear floor middle cross beam assembly to form a stable structure, and the structural strength of the rear mounting point of the two rows of seats is ensured.

Description

Technical Field

[0001] The present application relates to the technical field of chassis structures of passenger vehicles, and in particular to a rear floor reinforcement structure and a vehicle for installing two rows of seats. Background Art

[0002] With the continuous development of social economy, people's requirements for cars are becoming more and more comprehensive, and more flexible configurations are favored by consumers. Seats are important safety components of cars. They can usually be divided into two categories: integral and split. The comfort and functionality of seats are usually of great concern to consumers.

[0003] The second row seats of conventional five-seater vehicles usually have integrated cushions placed on the floor panel, with mounting points arranged on the panel and the reinforcement plate inside the beam. The second row seats of vehicles with more than five seats are generally split, connected to the body through the seat frame itself. The frame type can be divided into other types such as fixed, slide rail and flip. Generally speaking, the second row seats are split to facilitate the third row passengers to get on and off the vehicle.

[0004] The left and right mounting points of the second row seats can be arranged in the rear floor longitudinal beam area, while the two middle mounting points of the second row seats can only be arranged in the middle area of ​​the rear floor. In addition, the seat belt fixing points are integrated into the seats. Due to the poor rigidity of the floor structure, it is difficult to meet the second row seat mounting point rigidity, strength, floor local modality and seat belt regulations. Summary of the invention

[0005] The embodiments of the present application provide a rear floor reinforcement structure and a vehicle for installing two rows of seats, so as to solve the problem in the related art that the floor structure has poor rigidity and is difficult to meet the stiffness and strength of the second row seat installation points, as well as the local modal of the floor and the safety belt regulations.

[0006] A first aspect of an embodiment of the present application provides a rear floor reinforcement structure for installing a second row of seats, comprising:

[0007] A vehicle chassis, the vehicle chassis comprising a left rear longitudinal beam assembly and a right rear longitudinal beam assembly arranged longitudinally, and a rear floor middle cross beam assembly arranged transversely and fixedly connected between the left rear longitudinal beam assembly and the right rear longitudinal beam assembly;

[0008] The rear floor assembly includes a rear floor fixed above the rear floor middle crossbeam assembly, and a second-row seat reinforcement beam fixed on the top of the rear floor, wherein the second-row seat reinforcement beam is located directly above the middle assembly of the rear floor middle crossbeam.

[0009] In some embodiments: the rear floor middle cross beam assembly includes a rear floor middle cross beam fixedly connected between the left rear longitudinal beam assembly and the right rear longitudinal beam assembly, the rear floor middle cross beam is a sheet metal part formed by stamping a steel plate, and a transverse groove with an upward opening is stamped on the top of the rear floor middle cross beam;

[0010] A left seat mounting bracket and a right seat mounting bracket which are spaced apart from each other are fixedly connected in the transverse groove, and the left seat mounting bracket and the right seat mounting bracket are both located directly below the second row seat reinforcement beam.

[0011] In some embodiments: the left seat mounting bracket and the right seat mounting bracket are both welded to the rear floor middle cross beam, the rear floor middle cross beam is welded to the rear floor, and the rear floor is welded to the second row seat reinforcement beam.

[0012] In some embodiments: the top of the cross beam in the rear floor is provided with a front flange folded forward and a rear flange folded backward located on both sides of the transverse groove, and the left seat mounting bracket and the right seat mounting bracket are symmetrically arranged;

[0013] The left seat mounting bracket and the right seat mounting bracket each include a bottom shell with a top opening and closed all around, a front lap plate connected to the front flange is provided on the front side of the bottom shell, and a rear lap plate connected to the rear flange is provided on the rear side of the bottom shell;

[0014] A left lap plate connected to the bottom surface of the transverse groove is provided on the left side of the bottom shell, a right lap plate connected to the bottom surface of the transverse groove is provided on the right side of the bottom shell, a front wall plate connected to the front wall surface of the transverse groove is provided on the front side of the bottom shell, and a rear wall plate connected to the rear wall surface of the transverse groove is provided on the rear side of the bottom shell.

[0015] In some embodiments: the left seat mounting bracket is provided with a left seat under-mounting hole penetrating through the middle cross beam of the rear floor, and the right seat mounting bracket is provided with a right seat under-mounting hole penetrating through the middle cross beam of the rear floor;

[0016] The second-row seat reinforcement beam is provided with a left seat upper mounting hole and a right seat upper mounting hole which penetrate the rear floor; the left seat upper mounting hole is connected to the left seat lower mounting hole, and the right seat upper mounting hole is connected to the right seat lower mounting hole.

[0017] In some embodiments: the length direction of the second-row seat reinforcement beam is parallel to the length direction of the crossbeam assembly in the rear floor, the second-row seat reinforcement beam is a sheet metal part stamped from a steel plate, and the second-row seat reinforcement beam is stamped with an upwardly protruding left seat mounting boss and a right seat mounting boss.

[0018] In some embodiments: the left seat mounting boss and the right seat mounting boss are spaced apart from each other, and a transverse rib connecting the left seat mounting boss and the right seat mounting boss is stamped on the second-row seat reinforcement beam;

[0019] A plurality of longitudinal ribs are stamped and formed on the second-row seat reinforcement beam and are located between the left seat mounting boss and the right seat mounting boss. The plurality of longitudinal ribs are vertically connected to the transverse ribs.

[0020] In some embodiments: the vehicle body chassis also includes a rear floor front cross beam assembly located in front of the rear floor middle cross beam assembly and a rear floor rear cross beam assembly located in rear of the rear floor middle cross beam assembly, and the rear floor front cross beam assembly and the rear floor rear cross beam assembly are both laterally arranged and fixedly connected between the left rear longitudinal beam assembly and the right rear longitudinal beam assembly.

[0021] In some embodiments: the rear floor is located on top of the left rear longitudinal beam assembly, the right rear longitudinal beam assembly, the rear floor middle cross beam assembly, the rear floor front cross beam assembly and the rear floor rear cross beam assembly and are welded to each other.

[0022] A second aspect of an embodiment of the present application provides a vehicle, including:

[0023] Two rows of seats, the two rows of seats comprising a second row of left seats and a second row of right seats, the bottoms of the second row of left seats and the second row of right seats are both equipped with side rails and inner rails that are parallel to each other and spaced apart;

[0024] And the rear floor reinforcement structure described in any of the above embodiments, the inner slide rails of the second row of left seats and the second row of right seats are fixed on the top of the second row of seat reinforcement beams, and the side slide rails of the second row of left seats and the second row of right seats are respectively fixed on the left rear longitudinal beam assembly and the right rear longitudinal beam assembly.

[0025] The beneficial effects of the technical solution provided by this application include:

[0026] The embodiment of the present application provides a rear floor reinforcement structure and a vehicle for installing two rows of seats. Since the rear floor reinforcement structure for installing two rows of seats of the present application is provided with a vehicle body chassis, the vehicle body chassis includes a left rear longitudinal beam assembly and a right rear longitudinal beam assembly arranged longitudinally, and a rear floor middle cross beam assembly arranged transversely and fixedly connected between the left rear longitudinal beam assembly and the right rear longitudinal beam assembly; a rear floor assembly, the rear floor assembly includes a rear floor fixed above the rear floor middle cross beam assembly, and a second row of seat reinforcement beam fixed to the top of the rear floor, the second row of seat reinforcement beam is located directly above the middle of the rear floor middle cross beam assembly.

[0027] Therefore, the rear floor reinforcement structure for installing the second row of seats of the present application is provided with a rear floor middle cross beam assembly supporting the rear floor at the bottom of the rear floor, and the two ends of the rear floor middle cross beam assembly are respectively connected to the left rear longitudinal beam assembly and the right rear longitudinal beam assembly, and a second row of seat reinforcement beam is provided at the top of the rear floor, and the second row of seat reinforcement beam is located directly above the middle of the rear floor middle cross beam assembly. The second row of seat reinforcement beam is designed on the top surface of the rear floor and is located at the rear installation point of the second row of seats. The second row of seat reinforcement beam is welded to the rear floor to form a rear floor assembly. The rear floor middle cross beam assembly is then welded to the rear floor assembly, so that the rear floor assembly is connected to the rear floor middle cross beam assembly to form a stable structure, which ensures the structural strength of the rear installation point of the second row of seats.

[0028] The rear floor reinforcement structure for installing the second row of seats in this application meets the installation performance requirements of the second row of seats with complex functions and heavy weight. It improves the local stiffness of the second row seat installation point, disperses the stress of the welds near the rear installation point of the second row of seats, avoids the risk of weld failure, and also improves the local mode of the rear floor, meeting the strength of the rear installation point of the second row of seats with complex functions and heavy weight. At the same time, the second row seat belts can be concentrated on the second row of seats, which also meets the requirements of seat belt regulations, shortens the length of the bottom slide rail of the second row of seats, and increases the foot space for passengers in the second row seat area. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0030] Figure 1 This is a structural exploded diagram of the rear floor reinforcement structure of an embodiment of the present application;

[0031] Figure 2 A schematic diagram of a partial structure of a rear floor reinforcement structure according to an embodiment of the present application;

[0032] Figure 3 for Figure 2 Structural cross-sectional view along the AA direction;

[0033] Figure 4 A top view of the structure of the rear floor middle crossbeam assembly of an embodiment of the present application;

[0034] Figure 5 A schematic diagram of the partial structure of a vehicle according to an embodiment of the present application.

[0035] Reference numerals:

[0036] 10. Chassis; 11. Left rear longitudinal beam assembly; 12. Right rear longitudinal beam assembly; 13. Middle cross beam assembly of rear floor; 14. Front cross beam assembly of rear floor; 15. Rear cross beam assembly of rear floor; 20. Rear floor assembly; 21. Rear floor; 22. Second row seat reinforcement beam; 30. Second row seat; 31. Second row left seat; 32. Second row right seat; 33. Side slide rail; 34. Inner slide rail;

[0037] 131, middle cross beam of rear floor; 132, left seat mounting bracket; 133, right seat mounting bracket; 134, mounting hole under left seat; 135, mounting hole under right seat; 136, bottom shell; 137, front lap plate; 138, rear lap plate; 139, left lap plate; 140, right lap plate; 141, front wall plate; 142, rear wall plate;

[0038] 221. Left seat mounting boss; 222. Right seat mounting boss; 223. Left seat upper mounting hole; 224. Right seat upper mounting hole; 225. Transverse convex rib; 226. Longitudinal convex rib. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0040] The embodiments of the present application provide a rear floor reinforcement structure and a vehicle for installing two rows of seats, which can solve the problem in the related art that the floor structure has poor rigidity and is difficult to meet the stiffness and strength of the second row seat installation points, as well as the local modal of the floor and the safety belt regulations.

[0041] See also Figures 1 to 3 As shown, the first aspect of the embodiment of the present application provides a rear floor reinforcement structure for installing two rows of seats, including:

[0042] The vehicle body chassis 10 includes a left rear longitudinal beam assembly 11 and a right rear longitudinal beam assembly 12 which are arranged longitudinally, the left rear longitudinal beam assembly 11 and the right rear longitudinal beam assembly 12 are arranged symmetrically with each other, and a rear floor middle cross beam assembly 13 which is arranged transversely and fixedly connected between the left rear longitudinal beam assembly 11 and the right rear longitudinal beam assembly 12, and the two ends of the rear floor middle cross beam assembly 13 are respectively welded to the left rear longitudinal beam assembly 11 and the right rear longitudinal beam assembly 12.

[0043] The rear floor assembly 20 includes a rear floor 21 fixed above the rear floor middle cross beam assembly 13, the left rear longitudinal beam assembly 11 and the right rear longitudinal beam assembly 12, and a second row seat reinforcement beam 22 fixed on the top of the rear floor 21. The second row seat reinforcement beam 22 is located just above the middle of the rear floor middle cross beam assembly 13. Along the Z-axis direction of the vehicle, the projection of the second row seat reinforcement beam 22 on the rear floor middle cross beam assembly 13 overlaps with the middle of the rear floor middle cross beam assembly 13.

[0044] The rear floor reinforcement structure for installing the second row of seats in the embodiment of the present application is provided with a rear floor middle cross beam assembly 13 supporting the rear floor 21 at the bottom of the rear floor 21, and the two ends of the rear floor middle cross beam assembly 13 are respectively connected to the left rear longitudinal beam assembly 11 and the right rear longitudinal beam assembly 12. A second row of seats reinforcement beam 22 is provided at the top of the rear floor 21, and the second row of seats reinforcement beam 22 is located directly above the middle of the rear floor middle cross beam assembly 13.

[0045] The second row seat reinforcement beam 22 is designed on the top surface of the rear floor 21 and is located at the rear installation point of the second row seat 30. The second row seat reinforcement beam 22 is welded to the rear floor 21 to form the rear floor assembly 20. The rear floor middle cross beam assembly 13 is then welded to the rear floor assembly 20, so that the rear floor assembly 20 is connected to the rear floor middle cross beam assembly 13 to form a stable structure, ensuring the structural strength of the rear installation point of the second row seat 30. Figures 1 to 5 The X-axis direction is the length (front and back) direction of the vehicle, the Y-axis direction is the width (left and right) direction of the vehicle, and the Z-axis direction is the height (up and down) direction of the vehicle.

[0046] The rear floor reinforcement structure for installing the second row of seats in the embodiment of the present application meets the installation performance requirements of the second row of seats 30 with complex functions and heavy weight. It improves the local stiffness of the rear installation point of the second row of seats 30, disperses the stress of the welding points near the rear installation point of the second row of seats 30, avoids the risk of welding point failure, and also improves the local mode of the rear floor 21, meeting the strength of the rear installation point of the second row of seats 30 with complex functions and heavy weight.

[0047] In addition, in order to solve the rigidity of the rear mounting point of the second row of seats 30 and the safety belt regulations, the prior art lengthens the bottom rail of the second row of seats 30, increases the mounting points, and increases the cost and compresses the passenger foot space due to the lengthening of the rail. The present application can concentrate the second row seat belts on the second row of seats 30, meets the safety belt regulations, shortens the length of the bottom rail of the second row of seats 30, and increases the passenger foot space in the second row seat area.

[0048] In some alternative embodiments: See Figure 3 and Figure 4As shown, the embodiment of the present application provides a rear floor reinforcement structure for installing two rows of seats, wherein the rear floor middle cross beam assembly 13 of the rear floor reinforcement structure includes a rear floor middle cross beam 131 fixedly connected between the left rear longitudinal beam assembly 11 and the right rear longitudinal beam assembly 12. The rear floor middle cross beam 131 is a sheet metal part formed by stamping a steel plate, and a transverse groove opening upward is stamped on the top of the rear floor middle cross beam 131, and the transverse cross section of the rear floor middle cross beam 131 is an inverted "J"-shaped structure with an opening facing upward.

[0049] The left seat mounting bracket 132 and the right seat mounting bracket 133 are fixedly connected in the transverse groove and are arranged at intervals from each other. The left seat mounting bracket 132 and the right seat mounting bracket 133 are both located directly below the second-row seat reinforcement beam 22. In the embodiment of the present application, the left seat mounting bracket 132 and the right seat mounting bracket 133 are designed in the rear floor middle cross beam 131, and the positions of the left seat mounting bracket 132 and the right seat mounting bracket 133 are consistent with the installation point of the second-row seat reinforcement beam 22.

[0050] Thus, at the lower part of the rear floor 21, the left seat mounting bracket 132 and the right seat mounting bracket 133 are connected to the rear floor middle cross beam 131 to form a stable structure, thereby ensuring the strength of the rear mounting point of the second row of seats 30. In the upper area of ​​the rear floor 21, the left seat mounting bracket 132 and the right seat mounting bracket 133 are connected by the designed second row of seat reinforcement beam 22, thereby forming a connection structure that corresponds to each other from top to bottom, further enhancing the structural strength of the mounting point of the second row of seats 30 at the middle position of the rear floor 21, thereby improving the modality of the rear floor 21.

[0051] In some alternative embodiments: See Figure 3 and Figure 4 As shown, the embodiment of the present application provides a rear floor reinforcement structure for installing a second row of seats, and the left seat mounting bracket 132 and the right seat mounting bracket 133 of the rear floor reinforcement structure are both welded to the rear floor middle cross beam 131. The rear floor middle cross beam 131 is welded to the rear floor 21, and the rear floor 21 is welded to the second row seat reinforcement beam 22. The second row seat reinforcement beam 22, the rear floor 21, the left seat mounting bracket 132, the right seat mounting bracket 133 and the rear floor middle cross beam 131 form a four-layer steel plate reinforcement structure from top to bottom.

[0052] The top of the cross beam 131 in the rear floor is provided with a front flange folded forward and a rear flange folded backward located on both sides of the transverse groove, and the left seat mounting bracket 132 and the right seat mounting bracket 133 are symmetrically arranged. The left seat mounting bracket 132 and the right seat mounting bracket 133 both include a bottom shell 136 with a top opening and closed around, and the front side of the bottom shell 136 is provided with a front lap plate 137 connected to the front flange, and the rear side of the bottom shell 136 is provided with a rear lap plate 138 connected to the rear flange.

[0053] A left lap plate 139 connected to the bottom surface of the transverse groove is provided on the left side of the bottom shell 136, a right lap plate 140 connected to the bottom surface of the transverse groove is provided on the right side of the bottom shell 136, a front wall plate 141 connected to the front wall surface of the transverse groove is provided on the front side of the bottom shell 136, and a rear wall plate 142 connected to the rear wall surface of the transverse groove is provided on the rear side of the bottom shell 136. The left seat mounting bracket 132 and the right seat mounting bracket 133 are both sheet metal parts integrally stamped from steel plates.

[0054] The left seat mounting bracket 132 and the right seat mounting bracket 133 are welded to the rear floor middle cross member 131 内部， Left seat mounting bracket 132 and right seat mounting bracket 133 自身特征面( The bottom shell 136, front lap plate 137, rear lap plate 138, left lap plate 139, right lap plate 140, front wall plate 141 and rear wall plate 142 form a "mouth" shaped closed cavity with the rear floor center cross beam 131, which greatly improves the rigidity of the rear mounting point of the second row of seats 30 and also meets the second row seat safety belt regulatory test requirements.

[0055] In some alternative embodiments: See Figures 2 to 4 As shown, the embodiment of the present application provides a rear floor reinforcement structure for installing two rows of seats, wherein the left seat mounting bracket 132 of the rear floor reinforcement structure is provided with a left seat under-mounting hole 134 penetrating through the rear floor middle cross beam 131, and the right seat mounting bracket 133 is provided with a right seat under-mounting hole 135 penetrating through the rear floor middle cross beam 131. There are two left seat under-mounting holes 134 and two right seat under-mounting holes 135, and the two left seat under-mounting holes 134 and the two right seat under-mounting holes 135 are arranged at intervals in front and back.

[0056] The second row seat reinforcement beam 22 is provided with a left seat upper mounting hole 223 and a right seat upper mounting hole 224 that penetrate the rear floor 21. There are two left seat upper mounting holes 223 and two right seat upper mounting holes 224, which are arranged at intervals in front and back. The left seat upper mounting hole 223 is connected to the left seat lower mounting hole 134, and the right seat upper mounting hole 224 is connected to the right seat lower mounting hole 135.

[0057] In the embodiment of the present application, a left seat upper mounting hole 223 and a right seat upper mounting hole 224 are provided on the second row seat reinforcement beam 22, which penetrate the rear floor 21; a left seat lower mounting hole 134 is provided on the left seat mounting bracket 132, which penetrates the rear floor middle cross beam 131; and a right seat lower mounting hole 135 is provided on the right seat mounting bracket 133, which penetrates the rear floor middle cross beam 131. The left seat upper mounting hole 223 and the left seat lower mounting hole 134 are used to jointly install the second row left seat 31, and the right seat upper mounting hole 224 and the right seat lower mounting hole 135 are used to jointly install the second row right seat 32.

[0058] In some alternative embodiments: See Figures 1 to 3 As shown, the embodiment of the present application provides a rear floor reinforcement structure for installing a second row of seats, and the length direction of the second row seat reinforcement beam 22 of the rear floor reinforcement structure is parallel to the length direction of the rear floor middle cross beam assembly 13. The second row seat reinforcement beam 22 is a sheet metal part formed by integrally stamping a steel plate, and the second row seat reinforcement beam 22 is stamped with a left seat mounting boss 221 and a right seat mounting boss 222 protruding upward.

[0059] The second row seat reinforcement beam 22 of the embodiment of the present application is a sheet metal part formed by integrally stamping a steel plate, and is stamped to form a left seat mounting boss 221 for mounting the second row left seat 31, and a right seat mounting boss 222 for mounting the second row right seat 32. The tops of the left seat mounting boss 221 and the right seat mounting boss 222 are both flat. The left seat mounting boss 221 is provided with a left seat upper mounting hole 223 connected to the second row left seat 31, and the right seat mounting boss 222 is provided with a right seat upper mounting hole 224 connected to the second row right seat 32.

[0060] In some alternative embodiments: See Figures 1 to 3 As shown, the embodiment of the present application provides a rear floor reinforcement structure for installing a second row of seats, wherein the left seat mounting boss 221 and the right seat mounting boss 222 of the rear floor reinforcement structure are arranged at intervals. A transverse rib 225 connecting the left seat mounting boss 221 and the right seat mounting boss 222 is stamped on the second row seat reinforcement beam 22. Two transverse ribs 225 are provided, and the two transverse ribs 225 are parallel to each other and arranged at intervals, and the two transverse ribs 225 extend along the length direction of the second row seat reinforcement beam 22 to enhance the structural strength of the second row seat reinforcement beam 22.

[0061] A plurality of longitudinal ribs 226 are stamped and formed on the second row seat reinforcement beam 22, and are located between the left seat mounting boss 221 and the right seat mounting boss 222. The plurality of longitudinal ribs 226 are perpendicularly connected to the transverse ribs 225. The plurality of longitudinal ribs 226 are parallel to each other and arranged at intervals, and the plurality of longitudinal ribs 226 extend along the width direction of the second row seat reinforcement beam 22 to enhance the structural strength of the second row seat reinforcement beam 22. The plurality of longitudinal ribs 226 and the two transverse ribs 225 are crisscrossed to further enhance the structural strength of the second row seat reinforcement beam 22.

[0062] In some alternative embodiments: See Figure 1As shown, the embodiment of the present application provides a rear floor reinforcement structure for installing two rows of seats, and the vehicle chassis 10 of the rear floor reinforcement structure also includes a rear floor front cross beam assembly 14 located in front of the rear floor middle cross beam assembly 13 and a rear floor rear cross beam assembly 15 located in the rear of the rear floor middle cross beam assembly 13. The rear floor front cross beam assembly 14 and the rear floor rear cross beam assembly 15 are both arranged transversely and fixedly connected between the left rear longitudinal beam assembly 11 and the right rear longitudinal beam assembly 12.

[0063] The rear floor 21 is located on the top of the left rear longitudinal beam assembly 11, the right rear longitudinal beam assembly 12, the rear floor middle cross beam assembly 13, the rear floor front cross beam assembly 14 and the rear floor rear cross beam assembly 15 and is welded to each other. The rear floor 21 is located on the left rear longitudinal beam assembly 11, the right rear longitudinal beam assembly 12, the rear floor middle cross beam assembly 13, the rear floor front cross beam assembly 14 and the rear floor rear cross beam assembly 15, which constitute the rear floor beam structure assembly, play a role in strength support for the installation of the second row of seats 30 of the vehicle, and ensure the structural stability of the rear floor 21.

[0064] See also Figure 5 As shown, a second aspect of an embodiment of the present application provides a vehicle, including:

[0065] The second row of seats 30 includes a second row of left seats 31 and a second row of right seats 32. The second row of left seats 31 and the second row of right seats 32 are spaced apart from each other in the width direction of the vehicle, and a pedestrian passage is left between the second row of left seats 31 and the second row of right seats 32. The bottoms of the second row of left seats 31 and the second row of right seats 32 are both installed with side rails 33 and inner rails 34 that are parallel to each other and spaced apart. The side rails 33 intersect with the inner rails 34 and are close to the second row of seat reinforcement beams 22.

[0066] As well as the rear floor reinforcement structure described in any of the above embodiments, the inner side rails 34 of the second row left seat 31 and the second row right seat 32 are fixed to the top of the second row seat reinforcement beam 22, wherein the inner side rails 34 of the second row left seat 31 are fixed to the left seat mounting boss 221, and the inner side rails 34 of the second row right seat 32 are fixed to the right seat mounting boss 222. The side rails 33 of the second row left seat 31 and the second row right seat 32 are fixed to the left rear longitudinal beam assembly 11 and the right rear longitudinal beam assembly 12, respectively.

[0067] How it works

[0068] The embodiment of the present application provides a rear floor reinforcement structure and a vehicle for installing two rows of seats. Since the rear floor reinforcement structure for installing two rows of seats of the present application is provided with a vehicle body chassis 10, the vehicle body chassis 10 includes a left rear longitudinal beam assembly 11 and a right rear longitudinal beam assembly 12 arranged longitudinally, and a rear floor middle cross beam assembly 13 arranged transversely and fixedly connected between the left rear longitudinal beam assembly 11 and the right rear longitudinal beam assembly 12; a rear floor assembly 20, the rear floor assembly 20 includes a rear floor 21 fixed above the rear floor middle cross beam assembly 13, and a second row of seat reinforcement beam 22 fixed on the top of the rear floor 21, and the second row of seat reinforcement beam 22 is located directly above the middle of the rear floor middle cross beam assembly 13.

[0069] Therefore, the rear floor reinforcement structure for installing the second row of seats of the present application is provided with a rear floor middle cross beam assembly 13 supporting the rear floor 21 at the bottom of the rear floor 21, and the two ends of the rear floor middle cross beam assembly 13 are respectively connected to the left rear longitudinal beam assembly 11 and the right rear longitudinal beam assembly 12, and a second row of seat reinforcement beam 22 is provided on the top of the rear floor 21, and the second row of seat reinforcement beam 22 is located directly above the middle of the rear floor middle cross beam assembly 13. The second row of seat reinforcement beam 22 is designed on the top surface of the rear floor 21 and is located at the rear installation point of the second row of seats 30, and the second row of seat reinforcement beam 22 is welded to the rear floor 21 to form the rear floor assembly 20. The rear floor middle cross beam assembly 13 is then welded to the rear floor assembly 20, so that the rear floor assembly 20 is connected to the rear floor middle cross beam assembly 13 to form a stable structure, which ensures the structural strength of the rear installation point of the second row of seats 30.

[0070] The rear floor reinforcement structure for installing the second row of seats in this application meets the installation performance requirements of the second row of seats 30 with complex functions and heavy weight. It improves the local stiffness of the rear installation point of the second row of seats, disperses the stress of the welding points near the rear installation point of the second row of seats, avoids the risk of welding point failure, and also improves the local mode of the rear floor, meeting the strength of the rear installation point of the second row of seats with complex functions and heavy weight. At the same time, the seat belts of the second row of seats can be concentrated on the second row of seats, which also meets the requirements of seat belt regulations, shortens the length of the bottom slide rail of the second row of seats 30, and increases the foot space of the occupants in the second row of seats 30 area.

[0071] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0072] It should be noted that, in this application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0073] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. A rear floor reinforcement structure for installing two rows of seats, characterized in that: include: A vehicle chassis (10), the vehicle chassis (10) comprising a left rear longitudinal beam assembly (11) and a right rear longitudinal beam assembly (12) arranged longitudinally, and a rear floor middle cross beam assembly (13) arranged transversely and fixedly connected between the left rear longitudinal beam assembly (11) and the right rear longitudinal beam assembly (12); A rear floor assembly (20), the rear floor assembly (20) comprising a rear floor (21) fixed above the rear floor middle cross beam assembly (13), and a second row seat reinforcement beam (22) fixed on the top of the rear floor (21), the second row seat reinforcement beam (22) being located directly above the middle of the rear floor middle cross beam assembly (13).

2. A rear floor reinforcement structure for installing a second row of seats as claimed in claim 1, characterized in that: The rear floor middle cross beam assembly (13) comprises a rear floor middle cross beam (131) fixedly connected between the left rear longitudinal beam assembly (11) and the right rear longitudinal beam assembly (12); the rear floor middle cross beam (131) is a sheet metal part formed by stamping a steel plate; a transverse groove with an upward opening is stamped on the top of the rear floor middle cross beam (131); A left seat mounting bracket (132) and a right seat mounting bracket (133) which are spaced apart from each other are fixedly connected in the transverse groove, and the left seat mounting bracket (132) and the right seat mounting bracket (133) are both located directly below the second row seat reinforcement beam (22).

3. A rear floor reinforcement structure for installing a second row of seats as claimed in claim 2, characterized in that: The left seat mounting bracket (132) and the right seat mounting bracket (133) are both welded to the rear floor middle cross beam (131), the rear floor middle cross beam (131) is welded to the rear floor (21), and the rear floor (21) is welded to the second row seat reinforcement beam (22).

4. A rear floor reinforcement structure for installing a second row of seats as claimed in claim 2, characterized in that: The top of the cross beam (131) in the rear floor is provided with a front flange folded forward and a rear flange folded backward located on both sides of the transverse groove, and the left seat mounting bracket (132) and the right seat mounting bracket (133) are symmetrically arranged; The left seat mounting bracket (132) and the right seat mounting bracket (133) both include a bottom shell (136) with a top opening and a closed periphery, a front lap plate (137) connected to the front flange is provided on the front side of the bottom shell (136), and a rear lap plate (138) connected to the rear flange is provided on the rear side of the bottom shell (136); A left lap plate (139) connected to the bottom surface of the transverse groove is provided on the left side of the bottom shell (136), a right lap plate (140) connected to the bottom surface of the transverse groove is provided on the right side of the bottom shell (136), a front wall plate (141) connected to the front wall surface of the transverse groove is provided on the front side of the bottom shell (136), and a rear wall plate (142) connected to the rear wall surface of the transverse groove is provided on the rear side of the bottom shell (136).

5. A rear floor reinforcement structure for installing a second row of seats as claimed in claim 2, characterized in that: The left seat mounting bracket (132) is provided with a left seat lower mounting hole (134) penetrating the middle cross beam (131) of the rear floor, and the right seat mounting bracket (133) is provided with a right seat lower mounting hole (135) penetrating the middle cross beam (131) of the rear floor; The second-row seat reinforcement beam (22) is provided with a left seat upper mounting hole (223) and a right seat upper mounting hole (224) which penetrate the rear floor (21); the left seat upper mounting hole (223) is connected to the left seat lower mounting hole (134); and the right seat upper mounting hole (224) is connected to the right seat lower mounting hole (135).

6. A rear floor reinforcement structure for installing a second row of seats as claimed in claim 1, characterized in that: The length direction of the second-row seat reinforcement beam (22) is parallel to the length direction of the cross beam assembly (13) in the rear floor. The second-row seat reinforcement beam (22) is a sheet metal part formed by integrally stamping a steel plate. The second-row seat reinforcement beam (22) is stamped with an upwardly protruding left seat mounting boss (221) and a right seat mounting boss (222).

7. A rear floor reinforcement structure for installing a second row of seats as claimed in claim 6, characterized in that: The left seat mounting boss (221) and the right seat mounting boss (222) are arranged at intervals from each other, and a transverse convex rib (225) connecting the left seat mounting boss (221) and the right seat mounting boss (222) is stamped on the second-row seat reinforcement beam (22); A plurality of longitudinal convex ribs (226) are stamped and formed on the second-row seat reinforcement beam (22) and are located between the left seat mounting boss (221) and the right seat mounting boss (222), and the plurality of longitudinal convex ribs (226) and the transverse convex ribs (225) are vertically connected to each other.

8. The rear floor reinforcement structure for installing a second row of seats as claimed in claim 1, characterized in that: The vehicle chassis (10) further comprises a rear floor front cross beam assembly (14) located in front of the rear floor middle cross beam assembly (13) and a rear floor rear cross beam assembly (15) located in rear of the rear floor middle cross beam assembly (13); the rear floor front cross beam assembly (14) and the rear floor rear cross beam assembly (15) are both arranged transversely and fixedly connected between the left rear longitudinal beam assembly (11) and the right rear longitudinal beam assembly (12).

9. A rear floor reinforcement structure for installing a second row of seats as claimed in claim 8, characterized in that: The rear floor (21) is located on the top of the left rear longitudinal beam assembly (11), the right rear longitudinal beam assembly (12), the rear floor middle cross beam assembly (13), the rear floor front cross beam assembly (14) and the rear floor rear cross beam assembly (15) and are welded to each other.

10. A vehicle, characterized in that: include: Two rows of seats (30), the two rows of seats (30) comprising two rows of left seats (31) and two rows of right seats (32), the bottoms of the two rows of left seats (31) and the two rows of right seats (32) are both equipped with side rails (33) and inner rails (34) which are parallel to each other and spaced apart; And the rear floor reinforcement structure as described in any one of claims 1 to 9, the inner slide rails (34) of the second row of left seats (31) and the second row of right seats (32) are both fixed on the top of the second row of seat reinforcement beams (22), and the side slide rails (33) of the second row of left seats (31) and the second row of right seats (32) are respectively fixed on the left rear longitudinal beam assembly (11) and the right rear longitudinal beam assembly (12).

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