A skeleton structure of a lightweight vehicle body

Abstract

The utility model relates to the technical field of vehicle body frame, disclose a kind of skeleton structure of lightweight vehicle body, including front frame and bottom plate, the front side of front frame is provided with long plate, the left and right sides of long plate are all fixedly connected with fixed block, the upper and lower sides of fixed block are threadedly connected with multiple screws, the outer wall of screw is threadedly connected with the left and right ends of the front side of front frame, the front side of long plate is fixedly connected with C type plate, the rear side middle part of C type plate is fixedly connected with buffer pad, the rear side of buffer pad is fixedly connected with ring piece one, the rear side of ring piece one is slidably connected with connecting block, the inner wall left and right sides of connecting block are all fixedly connected with spring one. In the utility model, through the synergies of C type plate, buffer pad, ring piece, connecting block and spring, form multistage buffer system, impact force is conducted to buffer pad in turn through C type plate, can effectively reduce the impact force when colliding.

Description

Technical Field

[0001] This utility model relates to the field of vehicle body frame technology, and in particular to a lightweight vehicle body frame structure. Background Technology

[0002] In the automotive industry, with increasingly stringent global requirements for energy conservation and emission reduction, and consumers' ever-increasing demands for vehicle fuel economy, driving range, and handling performance, lightweight design has become an important direction for the automotive industry. As the core load-bearing component of a car, the weight of the vehicle body frame directly affects the vehicle's energy consumption and power performance. Traditional vehicle body frames mostly use high-strength steel, which, while possessing good strength and safety, is also quite heavy, making it difficult to meet the current demands for lightweight automotive development. In recent years, some lightweight solutions have used lightweight materials such as aluminum alloys and carbon fiber to replace steel, reducing the vehicle's weight to some extent. However, aluminum alloys suffer from insufficient strength and toughness, making them prone to deformation under complex working conditions. While carbon fiber materials are high in strength and lightweight, their high cost and complex processing technology make large-scale application difficult. Furthermore, existing lightweight vehicle body frame structures, while ensuring lightweighting, often fail to simultaneously guarantee the vehicle's collision resistance and structural stability, failing to achieve an ideal balance between lightweighting and safety.

[0003] Furthermore, most current vehicle frames focus solely on structural strength and lightweighting, generally lacking effective collision protection. In the event of a collision, they cannot effectively disperse and absorb impact forces, easily leading to severe deformation of the vehicle structure and endangering the safety of passengers. Existing lightweight vehicle frame structures, while ensuring lightweighting, often fail to balance collision resistance and structural stability, failing to achieve an ideal balance between lightweighting and safety. Modern society primarily addresses this issue by employing new materials such as high-strength steel, aluminum alloys, and carbon fiber to improve frame strength and toughness, and by leveraging intelligent driving assistance systems such as automatic emergency braking and collision warning to proactively avoid or mitigate collision damage. However, despite these efforts, limitations remain. While high-strength steel increases strength, its weight advantage is limited, making it insufficient for extreme lightweighting requirements. Aluminum alloys lack toughness and are prone to uncontrollable deformation under complex collision conditions. While carbon fiber boasts superior performance, its high cost and complex manufacturing process hinder its widespread adoption. Utility Model Content

[0004] To overcome the above deficiencies, this utility model provides a lightweight vehicle body frame structure, which aims to improve the problem that the existing technology lacks effective anti-collision function and cannot disperse and absorb impact force in time when encountering a collision, which can easily lead to serious deformation of the vehicle body structure.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a lightweight vehicle body frame structure, including a front frame and a floor plate. A long plate is provided on the front side of the front frame, and fixing blocks are fixedly connected to both the left and right sides of the long plate. Multiple screws are threaded to the upper and lower sides of the fixing blocks. The outer walls of the screws are threaded to the left and right ends of the front side of the front frame. A C-shaped plate is fixedly connected to the front side of the long plate. A buffer pad is fixedly connected to the middle of the rear side of the C-shaped plate. A ring plate is fixedly connected to the rear side of the buffer pad. A connecting block is slidably connected to the rear side of the ring plate. Springs are fixedly connected to both the left and right sides of the inner wall of the connecting block. A connecting short block is fixedly connected to the adjacent side of two springs. A ring plate is fixedly connected to the rear side of the connecting block. A spring is fixedly connected to the rear side of the ring plate. An inner ring is fixedly connected to the rear side of the spring. A fixing mechanism is provided on the top of the floor plate for fixing.

[0006] As a further description of the above technical solution:

[0007] The fixing mechanism includes a fixing plate one, which is fixedly connected to the top edge of the base plate. A slotted square plate is fixedly connected to the right side of the fixing plate one. A slotted short plate is provided on the right side of the slotted square plate. A fixing plate two is fixedly connected to the bottom right side of the slotted square plate. Rotating short shafts are rotatably connected to both the front and rear sides of the slotted square plate. A rotating shaft is fixedly connected to the middle of the rotating short shaft. A threaded short rod is fixedly connected to the right side of the rotating shaft. A nut is threadedly connected to the right side of the threaded short rod.

[0008] As a further description of the above technical solution:

[0009] A front longitudinal beam is fixedly connected to the front edge of the front frame, and a lower windshield crossbeam is fixedly connected to the rear side of the front frame.

[0010] As a further description of the above technical solution:

[0011] The rear left and right ends of the lower windshield crossbeam are fixedly connected to A-pillars, and the adjacent sides of the two A-pillars are fixedly connected to roof crossbeams.

[0012] As a further description of the above technical solution:

[0013] A sunroof is provided on the rear side of the roof crossbeam, and an upper beam is fixedly connected to the rear side of each of the two A-pillars.

[0014] As a further description of the above technical solution:

[0015] Both upper beams are fixedly connected to column B at their bottom, and both upper beams are fixedly connected to column C at their rear.

[0016] As a further description of the above technical solution:

[0017] The front frame has a front wheel arch at the bottom, and the C-pillar has a rear wheel arch at the bottom.

[0018] As a further description of the above technical solution:

[0019] An oil hole is provided on the rear side of the C-pillar, and a flat washer is fixedly connected to the right side of the nut.

[0020] This utility model has the following beneficial effects:

[0021] 1. In this utility model, a multi-level buffer system is formed through the synergistic effect of the C-shaped plate, buffer pad, ring plate, connecting block and spring. The impact force is transmitted to the buffer pad through the C-shaped plate in sequence, and then through the ring plate and connecting block. After the spring absorbs part of the energy, the remaining impact force is borne by the ring plate and finally buffered by the spring. This can effectively reduce the impact force during collision and improve the impact resistance of the device.

[0022] 2. In this utility model, the rotating short shaft drives the rotating shaft to rotate, so that the front threaded short rod is screwed into the slotted short plate. With the fastening effect of the nut, the fixed mechanism is stably installed. This structure makes the disassembly process between the base plate and the front frame simple and efficient, facilitates the installation, maintenance and replacement of the equipment, effectively saves labor costs, and significantly improves the maintainability and flexibility of the equipment. Attached Figure Description

[0023] Figure 1 A front perspective view of the frame structure of a lightweight car body proposed in this utility model;

[0024] Figure 2 The right side view shows a lightweight car body frame structure proposed in this utility model;

[0025] Figure 3 This is a partial structural diagram of the lightweight car body frame structure proposed in this utility model;

[0026] Figure 4 This is a partial structural diagram illustrating the lightweight vehicle body frame structure proposed in this utility model.

[0027] Figure 5 This is a right-side perspective view of the frame structure of a lightweight car body proposed in this utility model;

[0028] Figure 6 This is a partial structural diagram of the lightweight vehicle body frame structure proposed in this utility model.

[0029] Legend:

[0030] 1. Front frame; 2. Fixing mechanism; 201. Slotted square plate; 202. Fixing plate one; 203. Rotating short shaft; 204. Rotating shaft; 205. Fixing plate two; 206. Nut; 207. Flat washer; 208. Slotted short plate; 209. Threaded short rod; 3. C-shaped plate; 4. Long plate; 5. Buffer pad; 6. Ring plate one; 7. Connecting block; 8. Spring one; 9. Connecting short block; 10. Ring plate two; 11. Spring two; 12. Inner ring; 13. A-pillar; 14. Floor plate; 15. Front longitudinal beam; 16. B-pillar; 17. Upper side beam; 18. Oil hole; 19. C-pillar; 20. Front wheel arch; 21. Rear wheel arch; 22. Sunroof; 23. Lower windshield crossbeam; 24. Roof crossbeam; 25. Screw; 26. Fixing block. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Please see the appendix Figure 1 Appendix Figure 3 and attached Figure 4 This utility model provides an embodiment of a lightweight vehicle body frame structure, including a front frame 1 and a floor plate 14. A long plate 4 is provided on the front side of the front frame 1. Fixing blocks 26 are fixedly connected to both the left and right sides of the long plate 4. Multiple screws 25 are threaded to the upper and lower sides of the fixing blocks 26. The outer walls of the screws 25 are threaded to the left and right ends of the front side of the front frame 1. A C-shaped plate 3 is fixedly connected to the front side of the long plate 4. A buffer pad 5 is fixedly connected to the middle of the rear side of the C-shaped plate 3. A ring plate 6 is fixedly connected to the rear side of the buffer pad 5. A connecting block 7 is slidably connected to the rear side of 6. Spring 8 is fixedly connected to the left and right sides of the inner wall of the connecting block 7. A connecting short block 9 is fixedly connected to the adjacent side of the two springs 8. A ring plate 10 is fixedly connected to the rear side of the connecting block 7. Spring 11 is fixedly connected to the rear side of the ring plate 10. An inner ring 12 is fixedly connected to the rear side of the spring 11. A fixing mechanism 2 is provided on the top of the base plate 14. The fixing mechanism 2 is used for fixing. A front wheel arch 20 is provided at the bottom of the front frame 1. A rear wheel arch 21 is provided at the bottom of the C-pillar 19.

[0033] Specifically, a lightweight vehicle body frame structure includes a front frame 1 and a floor 14. A long plate 4 is provided on the front side of the front frame 1 to provide support and connection points. Fixing blocks 26 are fixedly connected to both sides of the long plate 4. Multiple screws 25 are threaded onto the upper and lower sides of these fixing blocks 26. The outer walls of these screws 25 are threaded to the left and right ends of the front side of the front frame 1, ensuring structural stability. A C-shaped plate 3 is also fixedly connected to the front side of the long plate 4. A buffer pad 5 is fixedly connected to the middle of the rear side of the C-shaped plate 3. A ring plate 6 is further fixedly connected to the rear side of the buffer pad 5. The rear side of the ring plate 6 is designed to slidably connect to a connecting block 7. The inner side of the connecting block 7... Springs 8 are fixedly connected to both sides of the wall. Connecting blocks 9 are fixedly connected to adjacent sides of these springs 8 to provide elastic connection and cushioning. A ring plate 10 is fixedly connected to the rear side of the connecting block 7. A spring 11 is fixedly connected to the rear side of the ring plate 10. An inner ring 12 is fixedly connected to the rear side of the spring 11 to further enhance the stability and elasticity of the structure. A fixing mechanism 2 is provided on the top of the base plate 14. The fixing mechanism 2 is used for fixing to ensure the stability of the entire structure. A front wheel arch 20 is provided at the bottom of the front frame 1 to facilitate the installation of the front wheel. A rear wheel arch 21 is provided at the bottom of the C-pillar 19 to facilitate the installation of the rear wheel, thereby providing complete wheel support for the entire structure.

[0034] Please see the appendix Figure 2 Appendix Figure 5 and attached Figure 6 The fixing mechanism 2 includes a fixing plate 202, which is fixedly connected to the top edge of the base plate 14. A slotted square plate 201 is fixedly connected to the right side of the fixing plate 202. A slotted short plate 208 is provided on the right side of the slotted square plate 201. A fixing plate 205 is fixedly connected to the bottom right side of the slotted square plate 201. A rotating short shaft 203 is rotatably connected to both the front and rear sides of the slotted square plate 201. A rotating shaft 204 is fixedly connected to the middle of the rotating short shaft 203. A threaded short rod 209 is fixedly connected to the right side of the rotating shaft 204. A nut 206 is threadedly connected to the right side of the threaded short rod 209. An oil hole 18 is opened on the rear side of the C-pillar 19. A flat washer 207 is fixedly connected to the right side of the nut 206.

[0035] Specifically, the fixing mechanism 2 consists of multiple components, including a fixing plate 202, which is fixedly installed at the top edge of the base plate 14 to ensure structural stability. To the right of the fixing plate 202, a slotted square plate 201 is fixedly connected, providing additional support and function for the mechanism. To the right of the slotted square plate 201, a slotted short plate 208 is provided, further enhancing the mechanism's stability. At the bottom right side of the slotted square plate 201, a fixing plate 205 is fixedly connected, working together with the slotted square plate 201 to provide necessary support points for the entire mechanism. To allow for flexible adjustment of the mechanism, the slotted square plate... Rotary short shafts 203 are rotatably connected to both the front and rear sides of plate 201. A rotating shaft 204 is fixedly connected to the middle of the rotating short shaft 203. A threaded short rod 209 is fixedly connected to the right side of the rotating shaft 204. It is connected to the rotating shaft 204 by threads. A nut 206 is threadedly connected to the right side of the threaded short rod 209. This nut 206 can be used to lock the position of the threaded short rod 209 to ensure that the mechanism remains stable after adjustment. An oil hole 18 is opened on the rear side of C-pillar 19. Finally, a flat washer 207 is fixedly connected to the right side of nut 206, which provides a planar support for nut 206 and ensures the smoothness and safety of the entire mechanism during use.

[0036] Please see the appendix Figure 1 and attached Figure 2 The rear left and right ends of the lower windshield crossbeam 23 are fixedly connected to the A-pillar 13, and the adjacent sides of the two A-pillars 13 are fixedly connected to the roof crossbeam 24. A sunroof 22 is opened on the rear side of the roof crossbeam 24, and the rear sides of the two A-pillars 13 are fixedly connected to the upper beam 17.

[0037] Specifically, A-pillars 13 are fixedly connected to both ends of the rear side of the lower windshield crossbeam 23 of the car. The adjacent sides of the two A-pillars 13 are fixedly connected to the roof crossbeam 24. A sunroof 22 is provided on the rear side of the roof crossbeam 24 to provide additional light and ventilation to the interior of the car. In addition, the upper beam 17 is fixedly connected to the rear side of the two A-pillars 13, which provides further support for the stability and safety of the vehicle body structure.

[0038] Please see the appendix Figure 1 and attached Figure 2 A front longitudinal beam 15 is fixedly connected to the front edge of the front frame 1, a lower windshield crossbeam 23 is fixedly connected to the rear side of the front frame 1, B-pillars 16 are fixedly connected to the bottom of the two upper side beams 17, and C-pillars 19 are fixedly connected to the rear side of the two upper side beams 17.

[0039] Specifically, the front longitudinal beam 15 is fixedly connected to the front edge of the front frame 1. This design ensures the stability and load-bearing capacity of the structure. The rear part of the front frame 1 is fixedly connected to the lower windshield crossbeam 23. The two upper side beams 17 located above the frame are fixedly connected to the B-pillar 16 at their bottom. This structure not only enhances the rigidity of the vehicle body but also provides additional safety for the vehicle. The rear sides of these two upper side beams 17 are also fixedly connected to the C-pillar 19, which further strengthens the side support of the vehicle body and ensures sufficient protection in the event of a side collision.

[0040] Working principle: The C-shaped plate 3 absorbs the impact force and then transmits it to the buffer pad 5. The buffer pad 5 absorbs the impact force and then transmits it to the ring plate 6, which in turn transmits the force to the connecting block 7. Since the connecting block 7 is designed to deform, the spring 8 absorbs part of the force on the connecting block 7. The remaining force on the connecting block 7 is further transmitted to the ring plate 10, causing the ring plate 10 to absorb the impact force and move inward. Since the ring plate 10 is fixedly connected to the spring 11, the spring 11 absorbs the final impact force, thus achieving a certain buffering effect on the collision.

[0041] By rotating the short shaft 203, the rotating shaft 204 rotates with the short shaft 203, so that the threaded short rod 209 at the front end of the rotating shaft 204 enters the slotted short plate 208. By twisting the nut 206, the fixing mechanism 2 is fixed, so that the base plate 14 and the front frame 1 can be disassembled.

[0042] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A lightweight vehicle body frame structure, comprising a front frame (1) and a floor plate (14), characterized in that: A long plate (4) is provided on the front side of the front frame (1). Fixing blocks (26) are fixedly connected to both the left and right sides of the long plate (4). Multiple screws (25) are threaded onto the upper and lower sides of the fixing blocks (26). The outer walls of the screws (25) are threaded to the left and right ends of the front side of the front frame (1). A C-shaped plate (3) is fixedly connected to the front side of the long plate (4). A buffer pad (5) is fixedly connected to the middle of the rear side of the C-shaped plate (3). A ring piece (6) is fixedly connected to the rear side of the buffer pad (5). A connecting block (7) is slidably connected to the rear side. Spring 1 (8) is fixedly connected to the left and right sides of the inner wall of the connecting block (7). A connecting short block (9) is fixedly connected to the adjacent side of the two spring 1 (8). A ring plate 2 (10) is fixedly connected to the rear side of the connecting block (7). Spring 2 (11) is fixedly connected to the rear side of the ring plate 2 (10). An inner ring (12) is fixedly connected to the rear side of the spring 2 (11). A fixing mechanism (2) is provided on the top of the base plate (14). The fixing mechanism (2) is used for fixing.

2. The lightweight vehicle body frame structure according to claim 1, characterized in that: The fixing mechanism (2) includes a fixing plate one (202), which is fixedly connected to the top edge of the base plate (14). A slotted square plate (201) is fixedly connected to the right side of the fixing plate one (202). A slotted short plate (208) is provided on the right side of the slotted square plate (201). A fixing plate two (205) is fixedly connected to the bottom right side of the slotted square plate (201). A rotating short shaft (203) is rotatably connected to both the front and rear sides of the slotted square plate (201). A rotating shaft (204) is fixedly connected to the middle of the rotating short shaft (203). A threaded short rod (209) is fixedly connected to the right side of the rotating shaft (204). A nut (206) is threadedly connected to the right side of the threaded short rod (209). A flat washer (207) is fixedly connected to the right side of the nut (206).

3. The lightweight vehicle body frame structure according to claim 1, characterized in that: A front longitudinal beam (15) is fixedly connected to the front edge of the front frame (1), a lower windshield crossbeam (23) is fixedly connected to the rear side of the front frame (1), and a front wheel arch (20) is provided at the bottom of the front frame (1).

4. The lightweight vehicle body frame structure according to claim 3, characterized in that: The rear left and right ends of the lower windshield crossbeam (23) are fixedly connected to A-pillars (13), and the two A-pillars (13) are fixedly connected to the roof crossbeams (24) on the adjacent side.

5. The lightweight vehicle body frame structure according to claim 4, characterized in that: A sunroof (22) is provided on the rear side of the roof crossbeam (24), and an upper beam (17) is fixedly connected to the rear side of both A-pillars (13).

6. The lightweight vehicle body frame structure according to claim 5, characterized in that: The bottom of both upper beams (17) is fixedly connected to column B (16), and the rear side of both upper beams (17) is fixedly connected to column C (19).

7. The lightweight vehicle body frame structure according to claim 6, characterized in that: The bottom of the C-pillar (19) is provided with a rear wheel arch (21).

8. The lightweight vehicle body frame structure according to claim 6, characterized in that: An oil hole (18) is provided on the rear side of the C-pillar (19).

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