A front floor assembly structure and vehicle

Abstract

This invention provides a front floor assembly structure, including a front floor with a front seat mounting beam and a rear seat mounting beam fixedly connected parallel to its upper surface; a frame assembly is fixedly connected to its lower surface; a left frame structure with a first weight-reducing groove and a right frame structure with a second weight-reducing groove are respectively provided on the left and right sides of the front part of the frame assembly; a middle frame structure with a third weight-reducing groove is provided in the middle part of the frame assembly; a fourth weight-reducing groove and a fifth weight-reducing groove are respectively provided on the left and right sides of the middle part of the frame assembly; and a rear frame structure with a sixth weight-reducing groove is provided at the rear part of the frame assembly. This invention solves the problems of large overall weight and complex assembly process of existing front floor assemblies.

Description

Technical Field

[0001] This invention relates to the field of automobile bodies, and more particularly to a front floor assembly structure and vehicle. Background Technology

[0002] With the development of the automotive industry, the requirements for vehicle performance are increasing, especially in terms of safety, fuel economy, and production efficiency. As a crucial component of the vehicle body, the design of the front floor frame directly impacts the overall performance and manufacturing cost. Traditional front floor frame structures typically consist of numerous parts welded to the front floor, often resulting in significant weight and complex assembly processes, failing to meet the modern automotive industry's demands for lightweighting, efficiency, and integration. Therefore, a new front floor assembly structure and vehicle design are needed. Summary of the Invention

[0003] The purpose of this invention is to provide a novel front floor assembly structure and vehicle, which solves the problems of large overall weight and complex assembly process of existing front floor assemblies.

[0004] The technical solution adopted by this invention to solve its technical problem is:

[0005] A front floor assembly structure includes a front floor, with a front seat mounting beam and a rear seat mounting beam fixedly connected parallel to the upper end surface of the front floor; a frame assembly is fixedly connected to the lower end surface of the front floor; a left frame structure with a first weight-reducing groove and a right frame structure with a second weight-reducing groove are respectively provided on the left and right sides of the front part of the frame assembly; a middle frame structure with a third weight-reducing groove is provided in the middle part of the frame assembly; a fourth weight-reducing groove and a fifth weight-reducing groove are respectively provided on the left and right sides of the middle part of the frame assembly; and a rear frame structure with a sixth weight-reducing groove is provided in the rear part of the frame assembly.

[0006] Preferably, in conjunction with the above scheme, the frame assembly includes a left front frame, a right front frame, a middle frame, and a rear frame. The left front frame and the right front frame are respectively fixedly connected to the left and right sides of the front part of the front floor. The middle frame is fixedly connected to the middle part of the front floor, and the rear frame is fixedly connected to the rear part of the front floor. The middle frame is fixedly connected to the left front frame and the right front frame, and the middle frame is fixedly connected to the rear frame.

[0007] Preferably, in conjunction with the above scheme, the right rear part of the left front frame extends to the right and rear sides respectively to form a first connecting part and a second connecting part; the left rear part of the right front frame extends to the left and rear sides respectively to form a third connecting part and a fourth connecting part; and the front side of the middle frame is provided with a fifth connecting part and a sixth connecting part; the first connecting part and the third connecting part are fixedly connected; the second connecting part and the fifth connecting part are fixedly connected; and the fourth connecting part and the sixth connecting part are fixedly connected.

[0008] Preferably, in combination with the above solution, the first weight reduction groove is provided on the left front frame, the second weight reduction groove is provided on the right front frame, the third weight reduction groove is provided on the frame formed by the connection of the left front frame, the right front frame and the middle frame, the fourth weight reduction groove is provided on the frame formed by the connection of the left front frame and the middle frame, the fifth weight reduction groove is provided on the frame formed by the connection of the right front frame and the middle frame, and the sixth weight reduction groove is provided on the frame formed by the connection of the middle frame and the rear frame.

[0009] Preferably, in combination with the above solution, after the left front frame, the right front frame, the middle frame, and the rear frame are respectively formed by stamping, they are fixedly connected to each other by laser welding.

[0010] Preferably, in combination with the above solution, the lower part, the first connecting part, the third connecting part of the left front frame, and the lower part of the right front frame are connected to form a front reinforcing crossbeam part, and the middle frame is provided with a rear reinforcing crossbeam part along the width direction of the vehicle body.

[0011] Preferably, in combination with the above solution, the front seat mounting beam is correspondingly arranged above the front reinforcing crossbeam part, and the rear seat mounting beam is correspondingly arranged above the rear reinforcing crossbeam part.

[0012] Preferably, in combination with the above solution, the cross-section of the front seat mounting beam after being fixedly connected to the front floor and the front reinforcing crossbeam part is "day" shaped; the cross-section of the rear seat mounting beam after being fixedly connected to the front floor and the rear reinforcing crossbeam part is "day" shaped.

[0013] Preferably, in combination with the above solution, a rear reinforcing crossbeam is fixedly connected to the upper end surface of the rear reinforcing crossbeam part.

[0014] In addition, the present invention further includes a vehicle provided with the above-mentioned front floor assembly structure.

[0015] Advantages of the present invention: The front floor assembly structure of the present invention, the integrated molding technology and structural optimization improve the stiffness and bearing capacity of the front floor frame, enhance the safety of the vehicle during collision; the integrated design with weight reduction grooves significantly reduces the weight of the front floor frame, helps to improve the fuel economy and performance of the vehicle; it can reduce the number of parts and simplify the assembly process, improve production efficiency, and reduce manufacturing costs; the integrated design improves the utilization rate of the interior space of the vehicle and the overall aesthetic degree, and provides a more comfortable riding environment for passengers.

[0016] Hereinafter, the present invention will be described in more detail with reference to the drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural diagram of a front floor assembly of the present invention.

[0018] Figure 2 This is a structural diagram of a front floor assembly according to the present invention from another perspective.

[0019] Figure 3 for Figure 1 AA section diagram.

[0020] Figure 4 This is a structural diagram of the skeleton assembly in this invention.

[0021] Figure 5 This is a structural diagram of the skeleton assembly in this invention from another direction.

[0022] Figure 6 This is a bottom view of the skeleton assembly in this invention.

[0023] Figure 7 This is an exploded view of the skeleton assembly in this invention.

[0024] Figure 8 This is a structural diagram of the front mounting beam and the rear mounting beam of the seat in this invention.

[0025] Figure 9 This is a structural diagram of the rear reinforcing crossbeam in this invention.

[0026] The components include: 1. Front floor; 2. Front seat mounting beam; 3. Rear seat mounting beam; 4. Frame assembly; 5. Rear reinforcing crossbeam; 41. Left front frame; 42. Right front frame; 43. Middle frame; 44. Rear frame; 411. First weight-reducing groove; 421. Second weight-reducing groove; 45. Third weight-reducing groove; 46. Fourth weight-reducing groove; 47. Fifth weight-reducing groove; 48. Sixth weight-reducing groove; 412. First connecting part; 413. Second connecting part; 422. Third connecting part; 423. Fourth connecting part; 431. Fifth connecting part; 432. Sixth connecting part; 401. Front reinforcing crossbeam part; 402. Rear reinforcing crossbeam part. Detailed Implementation

[0027] like Figure 1 and Figure 2A front floor assembly structure shown in the figure includes a front floor 1, and a front seat mounting beam 2 and a rear seat mounting beam 3 are fixedly connected in parallel to the upper end surface of the front floor 1; the cross-sections of the front seat mounting beam 2 and the rear seat mounting beam are both in a "U" - shaped structure, and a skeleton assembly 4 is fixedly connected to the lower end surface of the front floor 1; on the left and right sides of the front part of the skeleton assembly 4, a left frame structure with a first weight - reducing groove 411 and a right frame structure with a second weight - reducing groove 421 are respectively arranged, a middle frame structure with a third weight - reducing groove 45 is arranged in the middle of the skeleton assembly 4, fourth weight - reducing grooves 46 and fifth weight - reducing grooves 47 are respectively arranged on the left and right sides of the middle part of the skeleton assembly 4, and a rear frame structure with a sixth weight - reducing groove 48 is arranged at the rear of the skeleton assembly 4. The left frame structure, the right frame structure and the middle frame structure are arranged in an inverted "pin" - shaped layout. The left frame structure, the right frame structure, the middle frame structure and the rear frame structure are all in a "square" - shaped structure.

[0028] As Figures 4 to 7 shown, in order to facilitate the integrated welding assembly after segmented stamping and forming, the skeleton assembly 4 includes a left front skeleton 41, a right front skeleton 42, a middle skeleton 43 and a rear skeleton 44. The main cross - sections of each skeleton are all in a "U" - shaped structure. The left front skeleton 41 and the right front skeleton 42 are respectively fixedly connected to the left and right sides of the front part of the front floor 1, the middle skeleton 43 is fixedly connected to the middle of the front floor 1, and the rear skeleton 44 is fixedly connected to the rear of the front floor 1; the middle skeleton 43 is fixedly connected to the left front skeleton 41 and the right front skeleton 42, and the middle skeleton 43 is fixedly connected to the rear skeleton 44.

[0029] To facilitate the welding and fixing of each part and form various weight - reducing grooves between the parts, as Figure 7 shown, the right rear part of the left front skeleton 41 extends out a first connecting part 412 and a second connecting part 413 towards the right side and the rear side respectively, the left rear part of the right front skeleton 42 extends out a third connecting part 422 and a fourth connecting part 423 towards the left side and the rear side respectively, and a fifth connecting part 431 and a sixth connecting part 432 are arranged on the front side of the middle skeleton 43; the first connecting part 412 and the third connecting part 422 are fixedly connected, the second connecting part 413 and the fifth connecting part 431 are fixedly connected, and the fourth connecting part 423 and the sixth connecting part 432 are fixedly connected.

[0030] For the convenience of the layout design of the weight reduction area, the first weight reduction groove 411 is provided on the left front frame 41, the second weight reduction groove 421 is provided on the right front frame 42, the third weight reduction groove 45 is provided on the frame formed by the connection of the left front frame 41, the right front frame 42 and the middle frame 43, the fourth weight reduction groove 46 is provided on the frame formed by the connection of the left front frame 41 and the middle frame 43, the fifth weight reduction groove 47 is provided on the frame formed by the connection of the right front frame 42 and the middle frame 43, and the sixth weight reduction groove 48 is provided on the frame formed by the connection of the middle frame 43 and the rear frame 44. The frame structure with weight reduction grooves has high rigidity and strength, uniform stress, is more conducive to lightweight design, and has high material utilization rate.

[0031] To reduce the production process and ensure the structural rigidity of the assembly, the left front frame 41, the right front frame 42, the middle frame 43, and the rear frame 44 are respectively formed by stamping and then fixedly connected to each other by laser welding.

[0032] To increase the structural strength at the installation positions of the front seat mounting beam 2 and the rear seat mounting beam 3, the lower part of the left front frame 41, the first connecting part 412, the third connecting part 422, and the lower part of the right front frame 42 are connected to form a front strengthening cross beam part 401, and the middle frame 43 is provided with a rear strengthening cross beam part 402 along the width direction of the vehicle body.

[0033] To increase the structural strength at the seat mounting positions, the front seat mounting beam 2 is correspondingly arranged above the front strengthening cross beam part 401, and the rear seat mounting beam 3 is correspondingly arranged above the rear strengthening cross beam part 402.

[0034] To increase the structural strength at the seat mounting positions, as Figure 3 shown, the cross-section of the front seat mounting beam 2 after being fixedly connected to the front floor 1 and the front strengthening cross beam part 401 is "day" shaped; the cross-section of the rear seat mounting beam 3 after being fixedly connected to the front floor 1 and the rear strengthening cross beam part 402 is "day" shaped. The double-cavity structure of the "day" shape is stronger, and in the side impact safety test, the cross-section of the force it bears is larger and it is not easy to deform, thus ensuring the survival space of the passenger compartment.

[0035] To ensure the side impact performance, a rear strengthening cross beam 5 is fixedly connected to the upper end surface of the rear strengthening cross beam part 402. The cross-section of the rear strengthening cross beam 5 is a U-shaped structure.

[0036] The present invention also provides a vehicle, on which the above-mentioned front floor assembly structure is provided. High-strength and low-density materials can be selected as the main constituent materials of the front floor skeleton, such as high-strength steel (AHSS), aluminum alloy, or magnesium alloy, etc. These materials effectively reduce the weight of the skeleton while ensuring the structural strength.

[0037] The front seat mounting beam 2 and rear seat mounting beam 3 are spot-welded to the upper surface of the front floor 1. The frame assembly 4 is constructed by first stamping the left front frame 41, right front frame 42, middle frame 43, and rear frame 44 in segments to ensure the precision and quality of each stamped part. Then, laser welding is used to assemble the frames into a whole, ensuring the integrity of the front floor frame. Welding the integrated frame assembly to the front floor 1 requires fewer positioning and welding processes. The frame assembly 4 forms four frame structures in the XY plane, which have high rigidity, improve torsional strength, and can reduce the thickness of the sheet metal while ensuring structural strength. During the crash test, the impact force is dispersed through multiple transmission paths, and the high overall strength makes it less prone to deformation, thus protecting the survival space of the passenger compartment.

[0038] In the description of this invention, it should be understood that terms such as "upper," "lower," "front," "rear," "left," "right," "bottom," "inner," "outer," "one end," "one side," "both ends," and "both sides" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0039] The present invention has been described above with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any improvements made using the inventive concept and technical solution of the present invention, or direct applications in other situations, fall within the protection scope of the present invention.

Claims

1. A front floor assembly structure, comprising a front floor (1), characterized in that, The upper end surface of the front floor (1) is fixedly connected in parallel with a front seat mounting beam (2) and a rear seat mounting beam (3); the lower end surface of the front floor (1) is fixedly connected with a skeleton assembly (4); on the left and right sides of the front part of the skeleton assembly (4), a left frame structure with a first weight reduction groove (411) and a right frame structure with a second weight reduction groove (421) are respectively arranged, a middle frame structure with a third weight reduction groove (45) is arranged in the middle of the skeleton assembly (4), a fourth weight reduction groove (46) and a fifth weight reduction groove (47) are respectively arranged on the left and right sides of the middle part of the skeleton assembly (4), and a rear frame structure with a sixth weight reduction groove (48) is arranged at the rear part of the skeleton assembly (4). The skeleton assembly (4) includes a left front skeleton (41), a right front skeleton (42), a middle skeleton (43), and a rear skeleton (44); the left front skeleton (41) and the right front skeleton (42) are respectively fixedly connected to the left and right sides of the front part of the front floor (1), and the middle skeleton (43) is fixedly connected to the middle part of the front floor (1); a first connecting part (412) and a second connecting part (413) extend from the right rear part of the left front skeleton (41) towards the right side and the rear side respectively, a third connecting part (422) and a fourth connecting part (423) extend from the left rear part of the right front skeleton (42) towards the left side and the rear side respectively, and the first connecting part (412) and the third connecting part (422) are fixedly connected. The lower part of the left front skeleton (41), the first connecting part (412), the third connecting part (422), and the lower part of the right front skeleton (42) are connected to form a front strengthening crossbeam part (401), and the middle skeleton (43) is provided with a rear strengthening crossbeam part (402) along the width direction of the vehicle body. The front seat mounting beam (2) is correspondingly arranged above the front strengthening crossbeam part (401), and the rear seat mounting beam (3) is correspondingly arranged above the rear strengthening crossbeam part (402). The cross-section of the front seat mounting beam (2) after being fixedly connected to the front floor (1) and the front strengthening crossbeam part (401) is in the shape of a "day"; the cross-section of the rear seat mounting beam (3) after being fixedly connected to the front floor (1) and the rear strengthening crossbeam part (402) is in the shape of a "day".

2. The front floor assembly structure according to claim 1, characterized in that, The rear skeleton (44) is fixedly connected to the rear part of the front floor (1); the middle skeleton (43) is fixedly connected to the left front skeleton (41) and the right front skeleton (42), and the middle skeleton (43) is fixedly connected to the rear skeleton (44).

3. The front floor assembly structure according to claim 2, characterized in that, A fifth connecting part (431) and a sixth connecting part (432) are arranged on the front side of the middle skeleton (43); the second connecting part (413) is fixedly connected to the fifth connecting part (431), and the fourth connecting part (423) is fixedly connected to the sixth connecting part (432).

4. The front floor assembly structure according to claim 1, characterized in that, The first weight-reducing groove (411) is located on the left front frame (41), the second weight-reducing groove (421) is located on the right front frame (42), the third weight-reducing groove (45) is located on the frame formed by connecting the left front frame (41), the right front frame (42) and the middle frame (43), the fourth weight-reducing groove (46) is located on the frame formed by connecting the left front frame (41) and the middle frame (43), the fifth weight-reducing groove (47) is located on the frame formed by connecting the right front frame (42) and the middle frame (43), and the sixth weight-reducing groove (48) is located on the frame formed by connecting the middle frame (43) and the rear frame (44).

5. The front floor assembly structure according to claim 1, characterized in that, The left front frame (41), right front frame (42), middle frame (43), and rear frame (44) are formed by stamping and then fixed together by laser welding.

6. The front floor assembly structure according to claim 1, characterized in that, The upper end face of the rear reinforcing crossbeam (402) is fixedly connected to the rear reinforcing crossbeam (5).

7. A vehicle characterized in that, The vehicle is provided with a front floor assembly structure according to any one of claims 1 to 6.

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