A floor and rear bulkhead connection reinforcement structure and vehicle

Abstract

This utility model discloses a floor and rear bulkhead connection reinforcement structure, including a floor, a rear bulkhead outer panel and a rear bulkhead inner panel. The bottom of the floor is connected to a vehicle body longitudinal beam, and the rear bulkhead outer panel is connected to the end of the floor with a reinforcement plate. The reinforcement plate is connected to the end of the vehicle body longitudinal beam. By adopting the floor and rear bulkhead connection reinforcement structure of this utility model, the torsional rigidity of the vehicle body is improved.

Description

Technical Field

[0001] This utility model belongs to the field of automotive body technology. Specifically, this utility model relates to a floor and rear panel connection reinforcement structure. Background Technology

[0002] The torsional stiffness of a car body has a significant impact on the overall NVH performance and body strength. The structural performance of the rear door ring of the D-pillar is one of the important factors affecting the torsional stiffness of the car body. Existing technologies often use methods such as increasing the cross-sectional size of the D-ring, changing materials, and increasing the material thickness to improve the torsional stiffness of the car body. However, these methods have high design and production costs and do not involve reasonable improvements to the car body structure, resulting in limited improvement effects.

[0003] Utility model patent CN216153870U, published on April 1, 2022, discloses a vehicle body support structure entitled "A Vehicle Body Support Structure for a Vehicle Body." The vehicle body includes a rear floor assembly and a rear bulkhead assembly; the vehicle body support mechanism is connected to both the rear floor assembly and the rear bulkhead assembly; the vehicle body support mechanism, the rear floor assembly, and the rear bulkhead assembly are arranged in a triangular configuration. However, this vehicle body support structure does not solve the aforementioned technical problems. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing a floor and rear panel connection reinforcement structure that improves the torsional rigidity of the vehicle body.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] The floor and rear bulkhead connection reinforcement structure includes a floor, a rear bulkhead outer panel and a rear bulkhead inner panel, with a vehicle body longitudinal beam connected to the bottom of the floor. The feature is that a reinforcing plate is connected to the end of the rear bulkhead outer panel and the floor, and the reinforcing plate is connected to the end of the vehicle body longitudinal beam.

[0007] The reinforcing plate is welded between the outer rear panel and the floor. The outer rear panel and the inner rear panel are welded to the top of the reinforcing plate. A through hole is provided in the middle of the reinforcing plate. A first connecting plate is provided at the edge of the through hole. The first connecting plate extends into the inner side of the vehicle longitudinal beam and is welded and fixed. A second connecting plate is provided at the end of the vehicle longitudinal beam. The second connecting plate is welded and fixed to one side of the reinforcing plate.

[0008] The reinforcing plate is connected to the rear outer plate by a first bolt and a second bolt. There are two first bolts, which are located on both sides of the through hole, and the second bolt is located below the through hole.

[0009] The first connecting plate is perpendicular to the surface of the reinforcing plate, and the second connecting plate is perpendicular to the longitudinal beam of the vehicle body.

[0010] Both the first connecting edge and the second connecting plate are formed by bending, and there are three of each of the first and second connecting plates.

[0011] The longitudinal beam of the vehicle body has a U-shaped cross-section, and a connecting flange is provided at the top of the longitudinal beam.

[0012] The reinforcing plate has a reinforcing flange along its middle to bottom edge.

[0013] The upper end of the reinforcing plate is provided with reinforcing ribs.

[0014] The vehicle includes the aforementioned floor and rear bulkhead connection reinforcement structure.

[0015] The technical effects of this utility model are as follows: By adopting the floor and rear panel connection reinforcement structure of this utility model, a reinforcement plate is set at the connection between the floor and the rear panel. The reinforcement plate has a simple structure, occupies little space, and is easy to install, which reduces the design and production costs and improves the connection strength of the floor, rear panel and body longitudinal beams. This connects the floor, body longitudinal beams and body rear door ring, allowing the body D-ring to participate in more force transmission and indirectly improving the torsional stiffness of the body. Attached Figure Description

[0016] This manual includes the following figures, which illustrate the following:

[0017] Figure 1 This is a structural diagram of the floor and rear panel connection reinforcement structure of this utility model;

[0018] Figure 2 This is a structural diagram of the floor and rear panel connection reinforcement structure of this utility model;

[0019] Figure 3 This is a side view of the floor and rear panel connection reinforcement structure of this utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the reinforcing plate of this utility model;

[0021] Figure 5 This is a structural schematic diagram of the longitudinal beam of the vehicle body of this utility model.

[0022] The markings in the diagram are as follows: 1. Floor; 2. Rear outer panel; 3. Rear inner panel; 4. Vehicle longitudinal beam; 5. Reinforcing plate; 6. Through hole; 7. First connecting plate; 8. Second connecting plate; 9. Reinforcing flange; 10. Reinforcing rib; 11. Connecting flange; 12. First bolt; 13. Second bolt; 14. Weld point; 15. Second layer weld point; 16. Third layer weld point. Detailed Implementation

[0023] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, in order to help those skilled in the art to have a more complete, accurate and in-depth understanding of the inventive concept and technical solution of this invention, and to facilitate its implementation.

[0024] like Figure 1 and Figure 2 As shown, the floor and rear enclosure connection reinforcement structure includes a floor 1, a rear enclosure outer panel 2 and a rear enclosure inner panel 3. The bottom of the floor 1 is connected to a vehicle body longitudinal beam 4. The feature is that a reinforcing plate 5 is connected to the end of the rear enclosure outer panel 2 and the end of the floor 1, and the reinforcing plate 5 is connected to the end of the vehicle body longitudinal beam 4.

[0025] The floor 1 is connected to the vehicle body longitudinal beam 4 via multiple welding points 14. One side of the floor 1 is connected to the reinforcing plate 5 and the rear outer panel 2 via four three-layer welding points 16. The rear inner panel 3, reinforcing plate 5, and vehicle longitudinal beam 4 are all symmetrical components. Two reinforcing plates 5 are located at the bottom ends of the rear outer panel 2, and are also used to connect the two vehicle longitudinal beams 4. The reinforcing plate 5 strengthens the connection structure at the junction of the floor 1, vehicle longitudinal beam 4, and rear panel. The reinforcing plate 5 also serves as the mounting surface for the rear anti-collision beam, connecting the floor 1, vehicle longitudinal beam 4, and the rear tailgate ring, allowing the D-ring to participate in more force transmission and indirectly improving the torsional rigidity of the vehicle body. The reinforcing plate 5 has three transverse thickness dividing lines, dividing its surface into sections for positioning when connected to different components, while further reducing the overall thickness and space occupation.

[0026] like Figures 1 to 5 As shown, the reinforcing plate 5 is welded between the rear outer panel 2 and the floor 1. The rear outer panel 2 and the rear inner panel 3 are welded to the top of the reinforcing plate 5. A through hole 6 is provided in the middle of the reinforcing plate 5, and a first connecting plate 7 is provided at the edge of the through hole 6. The first connecting plate 7 extends into the inner side of the vehicle longitudinal beam 4 and is welded and fixed. A second connecting plate 8 is provided at the end of the vehicle longitudinal beam 4, and the second connecting plate 8 is welded and fixed to one side of the reinforcing plate 5. The upper part of the reinforcing plate 5 is connected to the rear outer panel 2 on one side by four double-layer welding points 15. The upper end of the reinforcing plate 5 is connected to the rear outer panel 2 and the rear inner panel 3 on one side by three triple-layer welding points 16. The lower part of the reinforcing plate 5 is also connected to the rear outer panel 2 on one side by ten double-layer welding points 15. Through the above-mentioned multiple welding points 14, the surface area of ​​the reinforcing plate 5 is fully utilized to achieve a stable connection between the reinforcing plate 5 and the rear outer panel 2, the rear inner panel 3 and the floor 1. The reinforcing plate 5 has a first connecting plate 7 installed at its through hole 6, which increases the welding area between the reinforcing plate 5 and the body longitudinal beam 4 and facilitates the welding positioning of the reinforcing plate 5. Each first connecting plate 7 is connected to the body longitudinal beam 4 through two welding points 14. The second connecting plate 8 also increases the welding area between the reinforcing plate 5 and the body longitudinal beam 4, improving the connection strength and integrity between the reinforcing plate 5 and the body longitudinal beam 4.

[0027] like Figure 2 As shown, the reinforcing plate 5 is connected to the rear outer panel 2 by a first bolt 12 and a second bolt 13. There are two first bolts 12, located on either side of the through hole 6, and the second bolt 13 is located below the through hole 6. The lower part of the reinforcing plate 5 is connected to the rear outer panel 2 on one side by two first bolts 12, and the lower end of the reinforcing plate 5 is also connected to the rear outer panel 2 by a second bolt 13. The reinforcing plate 5 has multiple bolt holes, with three bolts arranged in a triangular pattern to further enhance its connection strength. These three bolts also serve a positioning function when installing the rear anti-collision beam.

[0028] like Figure 4 and Figure 5 As shown, the first connecting plate 7 is perpendicular to the surface of the reinforcing plate 5, and the second connecting plate 8 is perpendicular to the longitudinal beam 4 of the vehicle body. This structure ensures that the connecting surfaces of the first connecting plate 7 and the second connecting plate 8 are perpendicular to each other, and also creates a multi-point and directional connection, further improving the connection strength.

[0029] like Figure 4 and Figure 5 As shown, both the first connecting edge and the second connecting plate 8 are formed by bending, and there are three of each type. The bending of the first connecting edge and the second connecting plate 8 avoids the reinforcing plate 5 and the body longitudinal beam 4 occupying too much space in the longitudinal direction of the vehicle body, resulting in better overall integrity and achieving the goal of minimizing parts. It also increases the connection area between them and the body longitudinal beam 4, which helps to increase the connection stability. The three first connecting plates 7 correspond to the three inner sides of the U-shaped cross-section body longitudinal beam 4, and the three second connecting plates 8 are formed by bending at the ends of the U-shaped cross-section body longitudinal beam 4, expanding the connection surface without increasing the longitudinal length of the body longitudinal beam 4.

[0030] like Figure 5 As shown, the longitudinal beam 4 of the vehicle body has a U-shaped cross-section, and a connecting flange 11 is provided at the top of the longitudinal beam 4. The connecting flange 11 increases the connection area between the longitudinal beam 4 and the floor 1, thereby improving the connection strength.

[0031] like Figure 4 As shown, the reinforcing plate 5 has a reinforcing flange 9 along its edge from the middle to the bottom. The reinforcing flange 9 increases the structural strength at the edge of the reinforcing plate 5.

[0032] like Figure 4 As shown, the upper end of the reinforcing plate 5 is provided with a reinforcing rib 10. The reinforcing rib 10 further increases the structural strength of the planar plate of the reinforcing plate 5.

[0033] The vehicle includes the aforementioned floor and rear bulkhead connection reinforcement structure.

[0034] The floor and rear enclosure connection reinforcement structure uses a reinforcement plate 5 at the connection between the floor and the rear enclosure. The reinforcement plate 5 has a simple structure, occupies little space, and is easy to install, which reduces design and production costs. It also improves the connection strength between the floor 1, the rear enclosure and the body longitudinal beam 4, thereby connecting the floor 1, the body longitudinal beam 4 and the rear door ring of the body, allowing the body D ring to participate in more force transmission and indirectly improving the torsional stiffness of the body.

[0035] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the inventive concept and technical solution of the present invention; or the direct application of the inventive concept and technical solution to other situations without modification, are all within the protection scope of the present invention.

Claims

1. A floor and rear bulkhead connection reinforcement structure, comprising a floor (1), a rear bulkhead outer panel (2), and a rear bulkhead inner panel (3), wherein the bottom of the floor (1) is connected to a vehicle body longitudinal beam (4), characterized in that: The rear outer panel (2) is connected to the end of the floor (1) by a reinforcing plate (5), and the reinforcing plate (5) is connected to the end of the vehicle body longitudinal beam (4).

2. The floor and rear enclosure connection reinforcement structure according to claim 1, characterized in that: The reinforcing plate (5) is welded between the rear outer panel (2) and the floor (1). The rear outer panel (2) and the rear inner panel (3) are welded to the top of the reinforcing plate (5). The reinforcing plate (5) has a through hole (6) in the middle. The edge of the through hole (6) has a first connecting plate (7). The first connecting plate (7) extends into the inner side of the vehicle longitudinal beam (4) and is welded and fixed. The end of the vehicle longitudinal beam (4) has a second connecting plate (8). The second connecting plate (8) is welded and fixed to one side of the reinforcing plate (5).

3. The floor and rear enclosure connection reinforcement structure according to claim 2, characterized in that: The reinforcing plate (5) is connected to the rear outer plate (2) by a first bolt (12) and a second bolt (13). The first bolt (12) has two parts and is located on both sides of the through hole (6), and the second bolt (13) is located below the through hole (6).

4. The floor and rear enclosure connection reinforcement structure according to claim 2 or 3, characterized in that: The first connecting plate (7) is perpendicular to the surface of the reinforcing plate (5), and the second connecting plate (8) is perpendicular to the longitudinal beam of the vehicle body (4).

5. The floor and rear enclosure connection reinforcement structure according to claim 4, characterized in that: The first connecting edge and the second connecting plate (8) are both formed by bending, and there are three of each of the first connecting plate (7) and the second connecting plate (8).

6. The floor and rear enclosure connection reinforcement structure according to claim 5, characterized in that: The longitudinal beam (4) of the vehicle body has a U-shaped cross section, and the top of the longitudinal beam (4) is provided with a connecting flange (11).

7. The floor and rear enclosure connection reinforcement structure according to claim 1, characterized in that: The reinforcing plate (5) has a reinforcing flange (9) at the middle to bottom edge.

8. The floor and rear enclosure connection reinforcement structure according to claim 1, characterized in that: The upper end of the reinforcing plate (5) is provided with reinforcing ribs (10).

9. A vehicle, characterized in that: Includes the floor and rear enclosure connection reinforcement structure as described in claims 1-8.

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