Front floor threshold reinforcing plate assembly structure and vehicle

Abstract

The invention belongs to the technical field of automobile bodies in white, and provides a front floor threshold reinforcing plate assembly structure and a vehicle, and the assembly structure comprises a threshold inner plate, an extruded aluminum body, a rolling threshold reinforcing plate and an extruded aluminum supporting plate; the doorsill inner plate is a bent metal plate and is provided with a first bent surface and a second bent surface which are in angular connection; the extrusion aluminum body is detachably mounted on the first bent surface of the doorsill inner plate; one end of the extruded aluminum support plate is mounted on the second bending surface, and the other end is connected with the extruded aluminum body; the rolling threshold reinforcing plate is installed on the first bent face and located in an installation gap formed by the threshold inner plate and the extrusion aluminum body. According to the front floor threshold reinforcing plate assembly, an extruded aluminum and rolling reinforcing plate combined structure is adopted, an original metal plate structure is integrated, the weight of a vehicle body is reduced, the lightweight coefficient of the vehicle body is increased, displacement or deformation of parts is not prone to occurring in a dynamic stress scene, and the safety protection effect is improved.

Description

Technical Field

[0001] This invention belongs to the field of automotive body-in-white technology, and specifically relates to a front floor sill reinforcement assembly structure and vehicle. Background Technology

[0002] With the rapid development of the automotive industry, consumers and industry standards are continuously raising their requirements for vehicle safety performance. At the same time, the demand for energy conservation, emission reduction, and improved range is driving lightweighting of the vehicle body to become one of the core directions of automotive design. As a key load-bearing and protective structure on the side of the vehicle body, the performance of the door sill area directly affects the occupant protection effect during side collisions. Therefore, it is necessary to reduce its weight as much as possible while ensuring sufficient structural strength and deformation resistance, in order to balance safety performance and lightweighting goals.

[0003] Currently, the industry has gradually adopted a door sill reinforcement plate structure that combines extruded aluminum and roll-formed parts. By utilizing the lightweight and high-strength characteristics of extruded aluminum and the forming advantages of roll-formed parts, the safety performance is improved and passenger safety is protected, while the vehicle body lightweight coefficient is effectively optimized.

[0004] However, existing technologies still have many unresolved issues: 1) Traditional extruded aluminum structures often adopt a single wall thickness or simple hollow design, which makes it difficult to balance structural strength, lightweight effect and processing feasibility. Some hollow structures have the risk of stress concentration, or material redundancy due to unreasonable design, and lightweight optimization is not sufficient. 2) The existing door sill reinforcement plate assembly structure has poor adaptability. When the wheelbase of the vehicle changes, it is necessary to redesign the size and connection method of core components such as the extruded aluminum body and the reinforcement plate, which leads to a longer development cycle and a significant increase in development costs. 3) The existing door sill reinforcement plate assembly structure lacks effective support and limiting structure, resulting in insufficient overall stability of the assembly structure. Under dynamic stress scenarios, component displacement or deformation may occur, affecting the safety protection effect. Summary of the Invention

[0005] To address the problems in the background art, this invention proposes a front floor sill reinforcement plate assembly structure and vehicle, which not only improves safety performance and protects passenger safety, but also increases the vehicle's lightweight coefficient, and adapts to changes in vehicle wheelbase, reducing development costs.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: This application provides a front floor sill reinforcement plate assembly structure, including an inner sill plate, an extruded aluminum body, a roll-formed sill reinforcement plate, and an extruded aluminum support plate; The inner sill panel is made of bent sheet metal and has a first bent surface and a second bent surface that are connected at an angle; the first bent surface is the main facade of the inner sill panel; the second bent surface is the folded edge surface that extends from the bottom of the first bent surface to the inside of the inner sill panel. The extruded aluminum body is detachably installed on the first bent surface of the inner sill plate; one end of the extruded aluminum support plate is installed on the second bent surface, and the other end is connected to the extruded aluminum body. The roll-formed sill reinforcement plate is installed on the first bending surface and is located in the installation gap formed between the inner sill plate and the extruded aluminum body.

[0007] Furthermore, the surface of the extruded aluminum body is provided with several grid structures, and the wall thickness of the grid structures is less than or equal to the outermost wall thickness of the extruded aluminum body.

[0008] Furthermore, it also includes press-fit nuts and bolts; The bolts pass through the inner sill plate, the roll-formed sill reinforcement plate, and the extruded aluminum body in sequence, and then connect with the press-fit bolts to achieve a detachable connection between the inner sill plate and the extruded aluminum body.

[0009] Furthermore, the roll-formed sill reinforcement plate has a continuous bending structure, with one end located at the connection between the first bending surface and the extruded aluminum body, and the other end extending to the junction between the first bending surface and the second bending surface.

[0010] Furthermore, the cross-section of the roll-formed threshold reinforcement plate has the same thickness.

[0011] Furthermore, the roll-formed sill reinforcement plate is connected to the first bending surface by spot welding.

[0012] Furthermore, the extruded aluminum support plate has a U-shaped sheet metal structure, and the open end of the U-shaped sheet metal structure is bent to both sides; The U-shaped open end of the extruded aluminum support plate abuts against the second bending surface, and the closed surface abuts against the bottom end of the extruded aluminum body.

[0013] Furthermore, the closed end of the extruded aluminum support plate is provided with a rivet, which passes through the extruded aluminum support plate and connects to the extruded aluminum body.

[0014] Furthermore, the included angle between the first bending surface and the second bending surface is 80°~90°.

[0015] This application also provides a vehicle that integrates a front floor sill reinforcement assembly structure according to any one of claims.

[0016] The beneficial effects of this invention are: 1. The front floor sill reinforcement plate assembly of the present invention adopts a structure combining extruded aluminum and roll-pressed reinforcement plate, integrating the original sheet metal structure, reducing the weight of the vehicle body, improving the vehicle body lightweight coefficient, and preventing component displacement or deformation under dynamic stress scenarios, thereby improving the safety protection effect. 2. The extruded aluminum body of the present invention adopts a multi-grid structure, and the wall thickness of the grid is less than or equal to the outermost layer of the extruded aluminum body, which significantly improves the collision energy absorption effect compared with the sheet metal structure, thereby achieving the function of protecting passenger safety. 3. The extruded aluminum and roll-pressed reinforcing plate of the present invention can be adapted to the wheelbase adjustment of the vehicle model, realizing the production of different wheelbase models, which helps to reduce development costs.

[0017] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures pointed out in the description and the drawings. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 A schematic diagram of a front floor sill reinforcement plate assembly according to the present invention is shown.

[0020] In the diagram: 1. Inner sill plate; 101. First bending surface; 102. Second bending surface; 2. Extruded aluminum body; 3. Roll-pressed sill reinforcement plate; 4. Extruded aluminum support plate; 5. Press-fit nut; 6. Bolt; 7. Rivet. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] like Figure 1 As shown, this embodiment discloses a front floor sill reinforcement plate assembly structure, which consists of a sill inner plate 1, an extruded aluminum body 2, a roll-formed sill reinforcement plate 3, an extruded aluminum support plate 4, a press-fit nut 5, a bolt 6, and a rivet 7.

[0023] Specifically, the inner sill panel 1 is made by bending sheet metal, and has a first bending surface 101 and a second bending surface 102 that are angled and joined. Among them, the first bending surface 101 is the main vertical surface of the inner sill panel 1 and is the main installation and bearing reference surface; the second bending surface 102 is a flanging surface extending from the bottom of the first bending surface 101 to the inside of the inner sill panel 1, and is used to provide a bottom support point. The included angle between the first bending surface 101 and the second bending surface 102 is set to 80° - 90°, and this angle range not only ensures the spatial adaptability of the structure but also maximizes the transmission of bearing stress.

[0024] A number of grid structures are provided on the surface of the extruded aluminum body 2, and the wall thickness of the grid structure is less than or equal to the outermost wall thickness of the extruded aluminum body 2. The grid structure design effectively optimizes the weight distribution of the extruded aluminum body 2 while ensuring the structural strength, achieving the goal of lightweight design. In addition, the extruded aluminum body 2 is detachably installed on the first bending surface 101 of the inner sill panel 1. Specifically, a protruding grid structure is provided at one end of the extruded aluminum body 2 facing the first bending surface 101, and this protruding grid structure contacts and is detachably connected to the first bending surface 101. In this embodiment, the specific shape of the grid structure is not specifically limited. Exemplarily, the grid structure can be rectangular, rectangular, triangular or honeycomb-shaped, etc.

[0025] The roll-formed sill reinforcement plate 3 is installed on the first bending surface 101 and is located in the installation gap formed between the inner sill panel 1 and the extruded aluminum body 2, playing the role of filling the gap and enhancing the local structural strength. The roll-formed sill reinforcement plate 3 is a continuous bending structure, with one end extending to the connection between the first bending surface 101 and the extruded aluminum body 2, and the other end extending to the connection between the first bending surface 101 and the second bending surface 102, achieving full coverage support of the key stress-bearing areas; its cross-section is designed with equal thickness, and is fixedly connected to the first bending surface 101 through the spot welding process. The spot welding connection method ensures the connection stability and structural integrity, and at the same time avoids the influence of excessive processing on the strength of the sheet metal. In this embodiment, the specific shape of the roll-formed sill reinforcement plate 3 is not limited. Exemplarily, it can be a continuous U-shaped structure.

[0026] The extruded aluminum support plate 4 is a U-shaped sheet metal structure, and its U-shaped open end is bent to both sides to form a "ji" - shaped structure. The open end abuts against the second bending surface 102 of the inner sill panel 1, and the closed surface abuts against the bottom end of the extruded aluminum body 2, forming a bottom support for the extruded aluminum body 2. A rivet 7 is provided at the closed end of the extruded aluminum support plate 4, and the rivet 7 passes through the extruded aluminum support plate 4 and is fixedly connected to the extruded aluminum body 2, further strengthening the support stability and preventing the extruded aluminum body 2 from undergoing bottom displacement or deformation when stressed.

[0027] It should be noted that the fixing method for the extruded aluminum support plate 4 and the extruded aluminum body 2 is not limited to rivets 7. For example, threaded holes can be reserved at the closed end of the extruded aluminum support plate 4, or nut inserts can be welded, and through holes or countersunk holes can be machined at the bottom of the extruded aluminum body 2. Fasteners such as hexagonal head screws and cross-head pan screws can be used to pass through the holes in the extruded aluminum body 2 and tighten them with the threaded structure of the support plate 4.

[0028] Furthermore, the assembly structure achieves a detachable connection between the inner sill plate 1 and the extruded aluminum body 2 through the press-fit nut 5 and bolt 6. Specifically, the bolt 6 passes through the inner sill plate 1, the roll-pressed sill reinforcement plate 3 and the extruded aluminum body 2 in sequence, and then is threadedly connected to the press-fit nut 5. This ensures the connection strength and facilitates later maintenance, disassembly or component replacement.

[0029] It should be noted that the front floor threshold reinforcement plate assembly structure utilizes the coordinated operation of multiple components. The first bending surface 101 of the inner threshold plate 1 is the main load-bearing surface, and the second bending surface 102 provides the bottom support reference. The 80°~90° included angle design allows stress to be smoothly transmitted along the bending surface, avoiding local stress concentration. The roll-formed threshold reinforcement plate 3 fills the gap between the inner threshold plate 1 and the extruded aluminum body 2. Its continuous bending structure and equal thickness cross-section design can effectively disperse the local stress on the first bending surface 101, improving the deformation resistance of the main facade. The extruded aluminum body 2 is detachably connected by bolts 6 and rivet nuts 5, which not only ensures assembly flexibility but also maintains structural rigidity while achieving a balance between strength and weight through the surface grid structure, which is lightweight. The extruded aluminum support plate 4 is fixed with rivets 7 through a U-shaped structure, providing support for the extruded aluminum body 2 from the bottom and restricting its vertical displacement. The double protection formed by the roll-formed threshold reinforcement plate 3 further enhances the overall stability of the assembly structure.

[0030] This embodiment discloses a vehicle that integrates the aforementioned front floor sill reinforcement plate assembly structure. The front floor sill area of ​​the vehicle is directly fitted with the aforementioned sill reinforcement plate assembly structure, and the assembly structure is assembled with the front floor frame of the vehicle body by means of bolts 6, spot welding, rivets 7, etc.

[0031] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A front floor sill reinforcement plate assembly structure, characterized in that, It includes an inner sill plate (1), an extruded aluminum body (2), a roll-formed sill reinforcement plate (3), and an extruded aluminum support plate (4). The inner sill plate (1) is a bent sheet metal with a first bent surface (101) and a second bent surface (102) connected at an angle; the first bent surface (101) is the main facade of the inner sill plate (1); the second bent surface is the folded edge surface that extends from the bottom of the first bent surface (101) to the inside of the inner sill plate (1); The extruded aluminum body (2) is detachably installed on the first bending surface (101) of the inner sill plate (1); one end of the extruded aluminum support plate (4) is installed on the second bending surface (102), and the other end is connected to the extruded aluminum body (2); The roll-pressed sill reinforcement plate (3) is installed on the first bending surface (101) and is located in the installation gap formed between the inner sill plate (1) and the extruded aluminum body (2).

2. The front floor sill reinforcement plate assembly structure according to claim 1, characterized in that, The surface of the extruded aluminum body (2) is provided with several grid structures, and the wall thickness of the grid structures is less than or equal to the outermost wall thickness of the extruded aluminum body (2).

3. The front floor sill reinforcement plate assembly structure according to claim 1, characterized in that, It also includes press-fit nuts (5) and bolts (6); The bolt (6) passes through the inner sill plate (1), the roll-pressed sill reinforcement plate (3) and the extruded aluminum body (2) in sequence, and then connects with the press-fit bolt (5) to realize the detachable connection between the inner sill plate (1) and the extruded aluminum body (2).

4. The front floor sill reinforcement plate assembly structure according to claim 1, characterized in that, The roll-pressed threshold reinforcement plate (3) is a continuous bending structure, with one end located at the connection between the first bending surface (101) and the extruded aluminum body (2), and the other end extending to the connection between the first bending surface (101) and the second bending surface (102).

5. A front floor sill reinforcement plate assembly structure according to claim 1 or 4, characterized in that, The cross-sectional thickness of the roller-pressed threshold reinforcement plate (3) is equal.

6. A front floor sill reinforcement plate assembly structure according to claim 1 or 4, characterized in that, The roll-pressed threshold reinforcement plate (3) is connected to the first bending surface (101) by spot welding.

7. The front floor sill reinforcement plate assembly structure according to claim 1, characterized in that, The extruded aluminum support plate (4) is a U-shaped sheet metal structure, and the open end of the U-shaped sheet metal structure is bent to both sides; The U-shaped opening end of the extruded aluminum support plate (4) abuts against the second bending surface (102), and the closed surface abuts against the bottom end of the extruded aluminum body (2).

8. The front floor sill reinforcement plate assembly structure according to claim 7, characterized in that, The closed end of the extruded aluminum support plate (4) is provided with a rivet (7), which passes through the extruded aluminum support plate (4) and connects to the extruded aluminum body (2).

9. The front floor sill reinforcement plate assembly structure according to claim 1, characterized in that, The included angle between the first bending surface (101) and the second bending surface (102) is 80°~90°.

10. A vehicle, characterized in that, The vehicle integrates a front floor sill reinforcement assembly structure as described in any one of claims 1-9.

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