Lightweight door skeleton structure

Abstract

The utility model discloses a kind of lightweight car door skeleton structures, including window frame, door skeleton and door crossbeam, and the door skeleton is equipped with crash beam, and door crossbeam includes the inner crossbeam and outer crossbeam of parallel arrangement, and the inner crossbeam one end and the door skeleton one end are connected with glass lifter mounting plate, and glass lifter mounting plate is located in the inner side of crash beam;Window frame one end, door skeleton one end and the inner crossbeam one end are connected with mirror mounting plate, and window frame other end and door skeleton other end are connected with lock catch reinforcing plate, and window frame and door skeleton are connected by mirror mounting plate and lock catch reinforcing plate and constitute frame structure, using the lightweight car door skeleton structure of the utility model, reduce the weight of car door, reduce manufacturing cost, and the reliability of component connection is high.

Description

Technical Field

[0001] This utility model belongs to the field of automotive body technology. Specifically, this utility model relates to a lightweight door frame structure. Background Technology

[0002] Lightweighting has become a key focus in the design and development of new energy vehicles, especially in the field of automotive manufacturing technology. Lightweight design is an important part of automotive manufacturing technology, involving multiple stages such as the design, manufacturing, and assembly of car doors.

[0003] The car doors used in current electric vehicles are formed by stamping a single piece of steel sheet, except for the frame and window frame. The steel sheet is large in size, the forming process is complex, and the production cost is also higher, resulting in a large overall weight of the car door, which is not conducive to the lightweighting of electric vehicles.

[0004] Utility model patent CN208966162U, published on June 11, 2019, discloses a lightweight structure for a car door hinge reinforcement plate. This structure includes an inner panel and a hinge reinforcement plate body. The hinge reinforcement plate body is installed on the side of the inner panel, which has concave and convex portions. The hinge reinforcement plate body is composed of several independent small reinforcement plates arranged sequentially on the side of the inner panel. The ends and middle of each reinforcement plate are curved, with the curvature matching the concave and convex portions of the inner panel. The reinforcement plate in the middle of the inner panel side is a rectangular reinforcement plate with high stability, while the reinforcement plates at the ends of the inner panel side are trapezoidal reinforcement plates with smaller volumes. However, this lightweight structure for a car door hinge reinforcement plate does not solve the aforementioned technical problem. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by providing a lightweight door frame structure that reduces door weight, lowers manufacturing costs, and ensures high reliability of component connections.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] This lightweight door frame structure includes a window frame, a door frame, and a door crossbeam. The door frame is equipped with an anti-collision beam. The door crossbeam includes an inner crossbeam and an outer crossbeam arranged in parallel. One end of the inner crossbeam and one end of the door frame are connected to a window regulator mounting plate, which is located inside the anti-collision beam. A rearview mirror mounting plate is connected between one end of the window frame, one end of the door frame, and one end of the inner crossbeam. The other end of the window frame and the other end of the door frame are connected to a latch reinforcement plate. The window frame and the door frame are connected by the rearview mirror mounting plate and the latch reinforcement plate to form a frame structure.

[0008] The top of the locking reinforcement plate and the top of the window regulator mounting plate are both fixedly connected to the inner crossbeam. A positioning groove is provided on one side of the top of the locking reinforcement plate. The window regulator mounting plate is connected to the inner crossbeam by a fixing bolt, and the fixing bolt is located in the positioning groove.

[0009] A first door glass track and a second door glass track are provided between the inner and outer crossbeams. A connecting flange is provided on the side of the rearview mirror mounting plate, and the first door glass track is welded to the side of the connecting flange. A first connecting plate is connected to the inner crossbeam of the first door glass track, a second connecting plate is connected to the anti-collision beam of the first door glass track, and a third connecting plate is connected to the bottom of the first door glass track to the door frame. A fourth connecting plate and a fifth connecting plate are provided at the top and bottom of the latch reinforcement plate, respectively, and a sixth connecting plate is provided on the door frame. The fourth, fifth, and sixth connecting plates are all fixedly connected to the second door glass track.

[0010] The door frame includes a vertical section and a horizontal section. The bottom end of the glass lifter mounting plate is fixedly connected to the bottom end of the vertical section and one end of the horizontal section. The glass lifter mounting plate is connected to the inner crossbeam by a first reinforcing plate, and the glass lifter mounting plate is connected to the door frame by a second reinforcing plate.

[0011] The connecting flange is provided with a groove, and an L-shaped fixing plate is provided between the outer crossbeam and the door frame. One end of the L-shaped fixing plate is inserted into the groove and welded and fixed, and the other end is riveted to the outer crossbeam.

[0012] The glass lifter mounting plate, the first reinforcing plate, and the second reinforcing plate are all provided with weight reduction holes.

[0013] The inner crossbeam, outer crossbeam, and window regulator mounting plate are all equipped with reinforcing ribs.

[0014] The window frames and door frames are all constructed by welding aluminum profiles together.

[0015] The technical advantages of this invention are as follows: The lightweight door frame structure of this invention replaces the existing method of forming the door using a single piece of steel sheet by stamping, reducing the door's weight and meeting the lightweight design requirements of electric vehicles. The rationally designed connection structure ensures the stability and safety of the vehicle body during long-term use. The various components are connected reliably through welding, screwing, and riveting, facilitating vehicle body manufacturing and assembly, improving maintainability and upgradeability, enabling parts sharing between different vehicle models, reducing production costs, and increasing production efficiency. Attached Figure Description

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

[0017] Figure 1This is a schematic diagram of the main structure of the lightweight car door frame of this utility model;

[0018] Figure 2 This is a rear view structural schematic diagram of the lightweight car door frame of this utility model;

[0019] Figure 3 This is a schematic diagram showing the connection between the inner crossbeam, the window regulator mounting plate, and the locking reinforcement plate of this utility model;

[0020] Figure 4 This is a connection diagram of the rearview mirror mounting plate of this utility model;

[0021] Figure 5 This is a schematic diagram of the connection of the first glass sliding rail of this utility model;

[0022] Figure 6 This is a schematic diagram of the connection of the second door glass sliding rail of this utility model.

[0023] The following are labeled in the diagram: 1. Window frame; 2. Door frame; 3. Inner beam; 4. Outer beam; 5. Anti-collision beam; 6. Window regulator mounting plate; 7. Rearview mirror mounting plate; 8. Locking buckle reinforcement plate; 9. Handle reinforcement plate; 10. Positioning groove; 11. Fixing bolt; 12. Connecting flange; 13. Vertical section; 14. Horizontal section; 15. L-shaped fixing plate; 16. Groove; 17. Weight reduction hole; 18. Reinforcing rib; 19. First door glass track; 20. Second door glass track; 21. First connecting plate; 22. Second connecting plate; 23. Third connecting plate; 24. Fourth connecting plate; 25. Fifth connecting plate; 26. Sixth connecting plate; 27. First reinforcing plate; 28. Second reinforcing plate; 29. ​​Connecting beam. Detailed Implementation

[0024] 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.

[0025] like Figure 1 and Figure 2As shown, the lightweight door frame structure includes a window frame 1, a door frame 2, and a door crossbeam. The door frame 2 is equipped with an anti-collision beam 5. The door crossbeam includes an inner crossbeam 3 and an outer crossbeam 4 arranged in parallel. One end of the inner crossbeam 3 and one end of the door frame 2 are connected to a window regulator mounting plate 6, which is located inside the anti-collision beam 5. A rearview mirror mounting plate 7 is connected between one end of the window frame 1, one end of the door frame 2, and one end of the inner crossbeam 3. The other end of the window frame 1 and the other end of the door frame 2 are connected to a latch reinforcement plate 8. The window frame 1 and the door frame 2 are connected by the rearview mirror mounting plate 7 and the latch reinforcement plate 8 to form a frame structure. The window frame 1 and door frame 2 are constructed by welding profiles; the anti-collision beam 5 is made of aluminum profile riveted and welded to the door frame 2; the door crossbeam, latch reinforcement plate 8, and window regulator mounting plate 6 are made of stamped steel, assembled by riveting and welding. The inner crossbeam 3 and outer crossbeam 4 connect the two sides of the door frame, serving as a reinforcement structure for the window sill and protecting the window regulator structure located between them. This structure replaces the existing technology of using a single piece of steel plate for stamping, saving on mold development and reducing manufacturing costs. It makes the door not only lightweight but also possesses sufficient strength and rigidity to ensure passenger safety and vehicle durability. After the components are assembled and fixed by welding, screwing, and riveting, this door frame is lighter and uses less material compared to a single piece of stamped steel plate, and also improves versatility, allowing for combination, replacement, and selection for different types of doors.

[0026] like Figure 3 As shown, the top of the locking reinforcement plate 8 and the top of the glass lifter mounting plate 6 are both fixedly connected to the inner crossbeam 3. A positioning groove 10 is provided on one side of the top of the locking reinforcement plate 8. A fixing bolt 11 connects the glass lifter mounting plate 6 to the inner crossbeam 3, and the fixing bolt 11 is located within the positioning groove 10. The rearview mirror mounting plate 7 not only provides an installation position for the glass track but also connects the window frame 1 to the door frame 2. Similarly, the locking reinforcement plate 8 improves the overall performance of the door frame structure. The inner crossbeam 3 provides a connection between the locking reinforcement plate 8 and the glass lifter mounting plate 6. Under the positioning action of the fixing bolt 11 and the positioning groove 10, the three are reliably connected through riveting and welding.

[0027] like Figure 1 and Figure 2As shown, a first door glass rail 19 and a second door glass rail 20 are provided between the inner crossbeam 3 and the outer crossbeam 4. A connecting flange 12 is provided on the side of the rearview mirror mounting plate 7, and the first door glass rail 19 is welded to the side of the connecting flange 12. A first connecting plate 21 connects the first door glass rail 19 to the inner crossbeam 3, a second connecting plate 22 connects the first door glass rail 19 to the anti-collision beam 5, and a third connecting plate 23 connects the bottom of the first door glass rail 19 to the door frame 2. A fourth connecting plate 24 and a fifth connecting plate 25 are provided at the top and bottom of the latch reinforcement plate 8, respectively, and a sixth connecting plate 26 is provided on the door frame 2. The fourth, fifth, and sixth connecting plates 24, 25, and 26 are all fixedly connected to the second door glass rail 20. The above-mentioned connecting plates fully utilize existing components on the door, providing multiple points of support for the two door glass rails, which helps ensure the overall alignment of the door glass rails and smooth glass lifting. The first connecting plate 21, the second connecting plate 22, and the third connecting plate 23 are arranged sequentially from top to bottom; the fourth connecting plate 24, the fifth connecting plate 25, and the sixth connecting plate 26 are all L-shaped structures and are arranged sequentially from top to bottom.

[0028] like Figure 2 As shown, the door frame 2 includes a vertical section 13 and a horizontal section 14. The bottom end of the glass lifter mounting plate 6 is fixedly connected to the bottom end of the vertical section 13 and one end of the horizontal section 14. The glass lifter mounting plate 6 is connected to the inner crossbeam 3 by a first reinforcing plate 27, and the glass lifter mounting plate 6 is connected to the door frame 2 by a second reinforcing plate 28. The two reinforcing plates connect the glass lifter mounting plate 6 to the inner crossbeam 3 and the door frame 2, increasing the number of connection points and the force transmission path, thereby improving the structural strength of the glass lifter mounting plate 6. The bottom end of the glass lifter mounting plate 6 is also connected to both the vertical section 13 and the horizontal section 14 of the door frame 2, making the vertical section 13 and the horizontal section 14 a better integrated whole and improving its performance.

[0029] like Figure 4 As shown, the connecting flange 12 has a groove 16, and an L-shaped fixing plate 15 is provided between the outer crossbeam 4 and the door frame 2. One end of the L-shaped fixing plate 15 is inserted into the groove 16 and welded and fixed, and the other end is riveted to the outer crossbeam 4. The L-shaped fixing plate 15 provides a support point for the outer crossbeam 4. During assembly, the groove 16 and the L-shaped fixing plate 15 can serve as the assembly positioning points for the outer crossbeam 4. After assembly, the L-shaped fixing plate 15 also enables the outer crossbeam 4 to be connected to the inner crossbeam 3 through the rearview mirror mounting plate 7, thereby improving the overall performance of the door frame.

[0030] like Figure 1 and Figure 2 As shown, the glass lifter mounting plate 6, the first reinforcing plate 27, and the second reinforcing plate 28 are all provided with weight reduction holes 17. The above structure is used to further reduce weight and achieve lightweight design.

[0031] like Figure 1 and Figure 2 As shown, reinforcing ribs 18 are provided on the inner crossbeam 3, the outer crossbeam 4, and the window regulator mounting plate 6. The reinforcing ribs 18 are arranged along the outer shape of the above components and are formed by stamping to further improve the structural strength.

[0032] like Figure 1 As shown, both the window frame 1 and the door frame 2 are constructed from welded aluminum profiles. The window frame 1, door frame 2, anti-collision beam 5, and connecting beam 29 are all hollow aluminum profiles, meeting the vehicle's lightweight requirements and effectively reducing the weight of the door, thus improving the vehicle's fuel economy and environmental performance.

[0033] like Figure 1 and Figure 2 As shown, the anti-collision beam 5 is connected to the outer crossbeam 4 at one end by a connecting beam 29. The outer crossbeam 4 and the connecting beam 29 are connected by a handle reinforcing plate 9. One end of the outer crossbeam 4 is provided with a rectangular weight reduction hole 17, and the handle reinforcing plate 9 is located outside the rectangular weight reduction hole 17.

[0034] This lightweight door frame structure replaces the existing method of stamping from a single piece of steel, reducing the door's weight and meeting the lightweight design requirements of electric vehicles. Its rationally designed connection structure ensures the stability and safety of the vehicle body during long-term use. The components are joined by welding, bolting, and riveting, providing reliable connections that facilitate vehicle body manufacturing and assembly, improve maintainability and upgradeability, enable parts sharing between different models, reduce production costs, and increase production efficiency.

[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 lightweight vehicle door frame structure, characterized in that: The system includes a window frame (1), a door frame (2), and a door crossbeam. The door frame (2) is provided with a crash beam (5). The door crossbeam includes an inner crossbeam (3) and an outer crossbeam (4) arranged in parallel. One end of the inner crossbeam (3) and one end of the door frame (2) are connected to a glass lifter mounting plate (6). The glass lifter mounting plate (6) is located inside the crash beam (5). A rearview mirror mounting plate (7) is connected between one end of the window frame (1), one end of the door frame (2), and one end of the inner crossbeam (3). A latching reinforcement plate (8) is connected between the other end of the window frame (1) and the other end of the door frame (2). The window frame (1) and the door frame (2) are connected by the rearview mirror mounting plate (7) and the latching reinforcement plate (8) to form a frame structure.

2. The lightweight door frame structure according to claim 1, characterized in that: The top of the locking reinforcement plate (8) and the top of the glass lifter mounting plate (6) are both fixedly connected to the inner crossbeam (3). The top of the locking reinforcement plate (8) is provided with a positioning groove (10) on one side. The glass lifter mounting plate (6) is connected to the inner crossbeam (3) by a fixing bolt (11), and the fixing bolt (11) is located in the positioning groove (10).

3. The lightweight door frame structure according to claim 2, characterized in that: The inner crossbeam (3) and the outer crossbeam (4) are provided with a first door glass slide rail (19) and a second door glass slide rail (20). The side of the rearview mirror mounting plate (7) is provided with a connecting flange (12), and the side of the connecting flange (12) is welded to the first door glass slide rail (19). The first door glass slide rail (19) is connected to the inner crossbeam (3) with a first connecting plate (21). The first door glass slide rail (19) is connected to the anti-collision beam (5) with a second connecting plate (22). The bottom of the first door glass slide rail (19) is connected to the door frame (2) with a third connecting plate (23). The top and bottom of the latch reinforcement plate (8) are provided with a fourth connecting plate (24) and a fifth connecting plate (25), respectively. The door frame (2) is provided with a sixth connecting plate (26). The fourth connecting plate (24), the fifth connecting plate (25) and the sixth connecting plate (26) are all fixedly connected to the second door glass slide rail (20).

4. The lightweight door frame structure according to claim 3, characterized in that: The door frame (2) includes a vertical section (13) and a horizontal section (14). The bottom end of the glass lifter mounting plate (6) is fixedly connected to the bottom end of the vertical section (13) and one end of the horizontal section (14). The glass lifter mounting plate (6) is connected to the inner crossbeam (3) by a first reinforcing plate (27), and the glass lifter mounting plate (6) is connected to the door frame (2) by a second reinforcing plate (28).

5. The lightweight door frame structure according to claim 3 or 4, characterized in that: The connecting flange (12) is provided with a groove (16), and an L-shaped fixing plate (15) is provided between the outer crossbeam (4) and the door frame (2). One end of the L-shaped fixing plate (15) is inserted into the groove (16) and welded and fixed, and the other end is riveted to the outer crossbeam (4).

6. The lightweight door frame structure according to claim 4, characterized in that: The glass lifter mounting plate (6), the first reinforcing plate (27), and the second reinforcing plate (28) are all provided with weight reduction holes (17).

7. The lightweight door frame structure according to claim 6, characterized in that: The inner crossbeam (3), outer crossbeam (4) and glass lifter mounting plate (6) are all provided with reinforcing ribs (18).

8. The lightweight door frame structure according to claim 7, characterized in that: Both the window frame (1) and the door frame (2) are made of aluminum profiles welded together.

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