Front floor assembly structure and vehicle

Abstract

The invention provides a front floor assembly structure which comprises a front floor, and the upper end face of the front floor is fixedly connected with a seat front mounting beam and a seat rear mounting beam in parallel; the lower end face of the front floor is fixedly connected with a framework assembly. A left frame structure with a first weight reduction groove and a right frame structure with a second weight reduction groove are arranged on the left side and the right side of the front portion of the framework assembly respectively, a middle frame structure with a third weight reduction groove is arranged in the middle of the framework assembly, and a fourth weight reduction groove and a fifth weight reduction groove are formed in the left side and the right side of the middle of the framework assembly respectively. A rear frame structure with a sixth weight reduction groove is arranged on the rear portion of the framework assembly. The front floor assembly solves the problems that an existing front floor assembly is large in overall weight and complex in assembly technology.

Description

Technical Field

[0001] The invention relates to the field of automobile bodies, and in particular to a front floor assembly structure and a vehicle. Background Art

[0002] With the development of the automobile industry, the requirements for automobile performance are increasing, especially in terms of safety, fuel economy and production efficiency. As an important part of the vehicle body, the design of the front floor frame directly affects the overall performance and manufacturing cost of the vehicle. The traditional front floor frame structure is usually composed of a large number of parts welded on the front floor, which often has problems such as heavy weight and complex assembly process, and it is difficult to meet the modern automobile industry's needs for lightweight, high efficiency and integration. Therefore, it is necessary to invent a new front floor assembly structure and vehicle. Summary of the invention

[0003] The purpose of the present invention is to provide a novel front floor assembly structure and a vehicle, so as to solve the problems of the existing front floor assembly having a large overall weight and a complicated assembly process.

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

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

[0006] Preferably, in combination 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 combination with the above scheme, the right rear part of the left front frame extends a first connecting part and a second connecting part toward the right side and the rear side respectively, the left rear part of the right front frame extends a third connecting part and a fourth connecting part toward the left side and the rear side respectively, 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-reducing groove is provided on the left front skeleton, the second weight-reducing groove is provided on the right front skeleton, the third weight-reducing groove is provided on the frame formed by connecting the left front skeleton, the right front skeleton and the middle skeleton, the fourth weight-reducing groove is provided on the skeleton formed by connecting the left front skeleton and the middle skeleton, the fifth weight-reducing groove is provided on the skeleton formed by connecting the right front skeleton and the middle skeleton, and the sixth weight-reducing groove is provided on the frame formed by connecting the middle skeleton and the rear skeleton.

[0009] Preferably, in combination with the above solution, after the left front skeleton, the right front skeleton, the middle skeleton, and the rear skeleton 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, and the third connecting part of the left front skeleton and the lower part of the right front skeleton are connected to form a front strengthening cross beam part, and the middle skeleton is provided with a rear strengthening cross beam 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 strengthening cross beam part, and the rear seat mounting beam is correspondingly arranged above the rear strengthening cross beam part.

[0012] Preferably, in combination with the above solution, the cross section of the front seat mounting beam fixedly connected to the front floor and the front strengthening cross beam part is in the shape of a Chinese character 'Ri' (day); the cross section of the rear seat mounting beam fixedly connected to the front floor and the rear strengthening cross beam part is in the shape of a Chinese character 'Ri' (day).

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

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

[0015] Advantages of the present invention: A front floor assembly structure of the present invention, the integrated molding technology and structural optimization improve the stiffness and load-bearing capacity of the front floor skeleton, enhance the safety of the vehicle during a collision; the integrated design with weight-reducing grooves significantly reduces the weight of the front floor skeleton, 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 aesthetics, and provides a more comfortable riding environment for passengers.

[0016] Hereinafter, the present invention will be described in more detail in conjunction with 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 of the present invention from another direction.

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

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

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

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

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

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

[0025] Fig. 9 It is a structural diagram of the rear reinforced cross beam in the present invention.

[0026] Among them, 1. front floor; 2. front seat mounting beam; 3. rear seat mounting beam; 4. frame assembly; 5. rear reinforcement beam; 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 reinforcement beam part; 402. rear reinforcement beam part. DETAILED DESCRIPTION

[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 "J"-shaped structures, and a frame 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 frame 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 frame assembly 4, the fourth weight reduction groove 46 and the fifth weight reduction groove 47 are respectively arranged on the left and right sides of the middle part of the frame assembly 4, and a rear frame structure with a sixth weight reduction groove 48 is arranged at the rear part of the frame assembly 4. The left frame structure, the right frame structure and the middle frame structure are arranged in an inverted "pin" shape. The left frame structure, the right frame structure, the middle frame structure and the rear frame structure are all "square" - shaped structures.

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

[0029] To facilitate the welding and fixing of each part and at the same time form each weight reduction groove between the parts, as Figure 7 shown, the right rear part of the left front frame 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 frame 42 extends out a third connecting part 422 and a fourth connecting part 423 towards the left side and the rear side respectively, and the front side of the middle frame 43 is provided with a fifth connecting part 431 and a sixth connecting part 432; 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 arranged on the left front skeleton 41, the second weight reduction groove 421 is arranged on the right front skeleton 42, the third weight reduction groove 45 is arranged on the frame formed by the connection of the left front skeleton 41, the right front skeleton 42 and the middle skeleton 43, the fourth weight reduction groove 46 is arranged on the frame formed by the connection of the left front skeleton 41 and the middle skeleton 43, the fifth weight reduction groove 47 is arranged on the skeleton formed by the connection of the right front skeleton 42 and the middle skeleton 43, and the sixth weight reduction groove 48 is arranged on the skeleton formed by the connection of the middle skeleton 43 and the rear skeleton 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] In order to reduce the production process and ensure the structural stiffness of the assembly, the left front skeleton 41, the right front skeleton 42, the middle skeleton 43, and the rear skeleton 44 are respectively formed by stamping and then fixedly connected to each other by laser welding.

[0032] In order 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 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.

[0033] In order to increase the structural strength at the seat mounting positions, 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.

[0034] In order to increase the structural strength at the seat mounting positions, as Figure 3 shown, the cross-section of the front seat mounting beam 2 fixedly connected to the front floor 1 and the front strengthening crossbeam part 401 is in the shape of a Chinese character 'Ri' (day); the cross-section of the rear seat mounting beam 3 fixedly connected to the front floor 1 and the rear strengthening crossbeam part 402 is in the shape of a Chinese character 'Ri' (day). The double-chamber structure of the 'Ri' shape is stronger. In the side impact safety test, the cross-section承受力的截面更大,不易变形从而保证成员舱生存空间。

[0035] In order to ensure the side impact performance, a rear strengthening crossbeam 5 is fixedly connected to the upper end surface of the rear strengthening crossbeam part 402. The cross-section of the rear strengthening crossbeam 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] It should be noted that there is an unclear expression in the original text of which is "承受力的截面更大", and it has been translated as "承受力的截面更大" in the translation for the time being. It is recommended to check and clarify this expression for a more accurate translation.The front seat mounting beam 2 and the rear seat mounting beam 3 are fixed to the upper end surface of the front floor 1 by spot welding. The frame assembly 4 is first stamped in sections by the left front frame 41, the right front frame 42, the middle frame 43, and the rear frame 44 to ensure the precision and quality of the stamped parts of each part, and then the frames are assembled into a whole by laser welding to ensure the integrity of the front floor frame. The positioning and welding processes required to weld the one-piece frame assembly to the front floor 1 are fewer. The frame assembly 4 forms 4 frame structures in the XY plane, which has strong rigidity, improves the torsional strength, and can reduce the thickness of the plate while ensuring the structural strength; during the collision test, the impact force has multiple transmission paths to disperse the impact force, and the overall strength is high and not easy to deform, thereby protecting the living space of the crew cabin.

[0038] In the description of the present invention, it is necessary to understand that terms such as "upper", "lower", "front", "back", "left", "right", "bottom", "inside", "outside", "one end", "one side", "two ends", "both sides", 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 invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0039] The present invention is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the present invention is not limited to the above-mentioned method. As long as various improvements made by adopting the method concept and technical solution of the present invention, or directly applied to other occasions, they all 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 parallelly fixedly connected to 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 to a frame 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 on the left and right sides of the front part of the frame assembly (4); a middle frame structure with a third weight-reducing groove (45) is arranged in the middle part of the frame assembly (4); a fourth weight-reducing groove (46) and a fifth weight-reducing groove (47) are respectively arranged on the left and right sides of the middle part of the frame assembly (4); and a rear frame structure with a sixth weight-reducing groove (48) is arranged in the rear part of the frame assembly (4).

2. The front floor assembly structure according to claim 1, characterized in that: The frame assembly (4) comprises a left front frame (41), a right front frame (42), a middle frame (43), and a rear frame (44); the left front frame (41) and the right front frame (42) are respectively fixedly connected to the left and right sides of the front part of the front floor (1); the middle frame (43) is fixedly connected to the middle part of the front floor (1); and the rear frame (44) is fixedly connected to the rear part of the front floor (1); the middle frame (43) is fixedly connected to the left front frame (41) and the right front frame (42); and the middle frame (43) is fixedly connected to the rear frame (44).

3. The front floor assembly structure according to claim 2, characterized in that: The right rear part of the left front frame (41) extends a first connection part (412) and a second connection part (413) toward the right side and the rear side respectively, the left rear part of the right front frame (42) extends a third connection part (422) and a fourth connection part (423) toward the left side and the rear side respectively, and the front side of the middle frame (43) is provided with a fifth connection part (431) and a sixth connection part (432); the first connection part (412) and the third connection part (422) are fixedly connected, the second connection part (413) and the fifth connection part (431) are fixedly connected, and the fourth connection part (423) and the sixth connection part (432) are fixedly connected.

4. The front floor assembly structure according to claim 2, characterized in that: The first weight-reducing groove (411) is arranged on the left front frame (41), the second weight-reducing groove (421) is arranged on the right front frame (42), the third weight-reducing groove (45) is arranged 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 arranged on the frame formed by connecting the left front frame (41) and the middle frame (43), the fifth weight-reducing groove (47) is arranged on the frame formed by connecting the right front frame (42) and the middle frame (43), and the sixth weight-reducing groove (48) is arranged on the frame formed by connecting the middle frame (43) and the rear frame (44).

5. The front floor assembly structure according to claim 2, characterized in that: 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.

6. The front floor assembly structure according to claim 2, characterized in that: 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 reinforcing crossbeam part (401), and the middle frame (43) is provided with a rear reinforcing crossbeam part (402) along the width direction of the vehicle body.

7. The front floor assembly structure according to claim 6, characterized in that: The front seat mounting beam (2) is correspondingly arranged above the front reinforcing crossbeam part (401), and the rear seat mounting beam (3) is correspondingly arranged above the rear reinforcing crossbeam part (402).

8. The front floor assembly structure according to claim 7, characterized in that: The cross-section of the front seat mounting beam (2) after being fixedly connected to the front floor (1) and the front reinforcing crossbeam 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 reinforcing crossbeam part (402) is "day"-shaped.

9. The front floor assembly structure according to claim 7, characterized in that: The upper end surface of the rear reinforcing crossbeam part (402) is fixedly connected with a rear reinforcing crossbeam (5).

10. A vehicle, characterized in that: The vehicle is provided with a front floor assembly structure according to any one of claims 1 to 9.

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