Automobile damping air spring capable of bearing high load

Abstract

The utility model relates to the technical field of automobile damping air springs, and discloses an automobile damping air spring capable of bearing high load, which comprises a mounting plate, an air bag is fixedly connected to the lower surface of the mounting plate, a waist plate is fixedly connected to the lower surface of the air bag, and a damping component is arranged on the inner wall of the air bag; the damping assembly comprises a sliding shaft, a buffer spring, a rotating shaft, a connecting rod, a piston rod and a damper, one end of the sliding shaft is arranged on the inner wall of the air bag, the two ends of the buffer spring are fixedly connected to the outer wall of the sliding shaft, the other end of the sliding shaft is slidably connected into the rotating shaft, and one end of the connecting rod is rotatably connected to the outer wall of the rotating shaft; the piston rod is rotationally connected to the other end of the connecting rod, and the outer wall of the piston rod is slidably connected into the damper. According to the air spring, the damping process is optimized, the air spring can still keep stable buffering performance under the long-time high-load working condition, and therefore the bearing capacity of the air spring is improved, and the service life of the air spring is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of automotive shock-absorbing air spring technology, and in particular to an automotive shock-absorbing air spring that can withstand high loads. Background Technology

[0002] With the continuous development of the automotive industry, the requirements for vehicle stability, safety, and comfort in automotive shock absorption systems are increasing. Air springs, as a key component of shock absorption systems, are widely used in automobiles, heavy machinery, and other fields due to their excellent elasticity and adjustability. Air springs absorb external impacts through the compression and expansion of air, thereby achieving a shock absorption effect. To meet the demands of different load conditions, the traditional design and manufacturing methods of air springs have gradually revealed durability and stability issues under high loads and prolonged use. Therefore, developing an automotive shock absorption air spring capable of withstanding high loads can effectively solve the problem of unstable performance of traditional technologies under high load conditions, becoming an important direction for improving the shock absorption effect and service life of automobiles.

[0003] Currently, traditional automotive air springs typically rely on a single airbag structure, achieving shock absorption through air compression. In this design, the airbag is the primary inflation component; air enters the airbag through a valve, causing it to inflate and absorb external impacts. In some high-load applications, the air pressure inside the airbag increases with the load, resulting in greater airbag inflation. To prevent over-inflation or rapid wear of the airbag, some designs incorporate a buffer spring or similar damping component inside the airbag. This buffer spring initially reduces the force of external impacts, extending the lifespan of the air spring. While this design can meet shock absorption requirements to some extent, the load-bearing capacity and stability of the airbag remain limited under high loads and prolonged high-intensity operation. The airbag may over-inflate, wear out, or become unstable.

[0004] Existing air springs rely solely on gas compression to regulate load-bearing capacity. As the load increases, the air spring struggles to effectively distribute external impact forces, leading to excessive direct stress. This causes the air spring to over-inflate under high loads, potentially resulting in damage or rapid wear. This phenomenon not only reduces shock absorption but also shortens the air spring's lifespan. Therefore, improving the air spring's load-bearing capacity, stability, and extending its lifespan under high load conditions has become a critical issue that urgently needs to be addressed in air spring technology. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides an automotive shock absorber air spring that can withstand high loads. It aims to improve the existing air spring airbags that rely solely on gas compression to adjust load-bearing capacity. As the load increases, the airbag cannot effectively share the external impact force, resulting in excessive direct force. This causes the airbag to over-inflate under high loads, and in severe cases, it may even be damaged or wear out rapidly.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a car shock-absorbing air spring capable of withstanding high loads, comprising a mounting plate, an airbag fixedly connected to the lower surface of the mounting plate, a waist plate fixedly connected to the lower surface of the airbag, and a shock-absorbing component provided on the inner wall of the airbag;

[0007] The shock absorption assembly includes a sliding shaft, a buffer spring, a rotating shaft, a connecting rod, a piston rod, and a damper. One end of the sliding shaft is disposed on the inner wall of the airbag. Both ends of the buffer spring are fixedly connected to the outer wall of the sliding shaft. The other end of the sliding shaft is slidably connected to the inside of the rotating shaft. One end of the connecting rod is rotatably connected to the outer wall of the rotating shaft. The piston rod is rotatably connected to the other end of the connecting rod. The outer wall of the piston rod is slidably connected to the inside of the damper.

[0008] Furthermore, the mounting plate has ventilation holes inside, a sealing plug is slidably connected inside the mounting plate, a threaded ring is threadedly connected to the bottom of the sealing plug, the external thread of the threaded ring matches the internal thread of the sealing plug, a filter plate is fixedly connected to the lower surface of the threaded ring, and a disassembly assembly is provided inside the sealing plug.

[0009] Furthermore, the assembly / disassembly assembly includes a turntable, a slide rod, a snap-fit ​​plate, and an arc-shaped groove. The outer wall of the turntable is rotatably connected to the inside of the sealing plug. The arc-shaped groove is formed inside the turntable. The outer wall of the slide rod is slidably connected to a pre-set arc-shaped groove inside the turntable. One end of the snap-fit ​​plate is fixedly connected to the outer wall of the slide rod. A rotating rod is fixedly connected to the middle of the turntable. A handle is fixedly connected to the top of the rotating rod. A reset assembly is provided inside the rotating rod.

[0010] Furthermore, the reset assembly includes a torsion spring, one end of which is fixedly connected to the inside of the rotating rod, and a fixed shaft is fixedly connected inside the sealing plug.

[0011] Furthermore, the torsion spring is sleeved on the outer wall of the fixed shaft, and the fixed shaft is used to limit the torsion spring.

[0012] Furthermore, the outer wall of the snap-fit ​​plate is slidably connected to the inside of the sealing plug and the mounting plate, and the snap-fit ​​plate is used to limit the position of the sealing plug.

[0013] Furthermore, the outer wall of the filter plate is slidably connected to the inside of the mounting plate, and the filter plate is used to filter air.

[0014] Furthermore, the piston rod is slidably connected to the inside of the waist plate, and the damper is fixedly connected to the outer wall of the waist plate.

[0015] This utility model has the following beneficial effects:

[0016] 1. In this utility model, the airbag provides basic shock absorption, and the inner wall is provided with shock absorption components to effectively disperse the impact force and reduce the direct force on the airbag. The sliding shaft and the buffer spring provide initial buffering, so that the airbag will not over-expand or wear out quickly under high load. The linkage structure of the rotating shaft, connecting rod, piston rod and damper further optimizes the shock absorption process, so that it can maintain stable buffering performance under long-term high load conditions, thereby improving the load-bearing capacity and service life of the air spring.

[0017] 2. In this utility model, the filter plate can filter the incoming air during inflation, reducing the impact of impurities on the airbag and preventing performance degradation caused by blockage or contamination. At the same time, a detachable structure is designed, which allows the sealing plug and filter plate to be easily removed for cleaning or replacement through the linkage mechanism of the handle, rotating rod and torsion spring. This greatly improves the convenience of maintenance, extends the service life of the air spring, and ensures the long-term stable operation of the system. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of an automotive shock-absorbing air spring capable of withstanding high loads, as proposed in this utility model.

[0019] Figure 2 This is a schematic diagram of the internal structure of an air spring for automobile shock absorption that can withstand high loads, as proposed in this utility model.

[0020] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0021] Figure 4 This is a schematic diagram of the internal structure of the mounting plate for an automotive shock absorber air spring capable of withstanding high loads, as proposed in this utility model.

[0022] Figure 5 This is a schematic diagram of the internal structure of the sealing plug of an automotive shock-absorbing air spring that can withstand high loads, as proposed in this utility model.

[0023] Figure 6 This is a schematic diagram of one side of the turntable structure of an automotive shock-absorbing air spring capable of withstanding high loads, as proposed in this utility model.

[0024] Legend:

[0025] 1. Mounting plate; 2. Airbag; 3. Waist plate; 4. Sliding shaft; 5. Buffer spring; 6. Rotating shaft; 7. Connecting rod; 8. Piston rod; 9. Damper; 10. Sealing plug; 11. Filter plate; 12. Threaded ring; 13. Rotating rod; 14. Turntable; 15. Sliding rod; 16. Snap-fit ​​plate; 17. Arc-shaped slide groove; 18. Fixed shaft; 19. Torsion spring; 20. Ventilation hole; 21. Handle. Detailed Implementation

[0026] 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.

[0027] Reference Figures 1-3 The present invention provides an embodiment of a car shock-absorbing air spring capable of withstanding high loads, including a mounting plate 1, an airbag 2 fixedly connected to the lower surface of the mounting plate 1, which uses air compression and expansion to achieve elastic support and provide basic shock absorption capacity, a waist plate 3 fixedly connected to the lower surface of the airbag 2, which slides inside in conjunction with a sliding shaft 4 to ensure the stability of shock absorption, and a shock absorption component is provided on the inner wall of the airbag 2.

[0028] The shock absorption assembly includes a sliding shaft 4, located on the inner wall of the airbag 2, which moves synchronously with the compression or expansion of the airbag 2; a buffer spring 5, sleeved on the outer wall of the sliding shaft 4, which provides additional cushioning and reduces the impact of instantaneous impact on the air spring; a rotating shaft 6, which connects the sliding shaft 4 and the connecting rod 7, and transmits force; a connecting rod 7, which connects the connecting rod 7 and the damper 9, and slides inside the damper 9; and a piston rod 8, which is connected to the damper 9 and is filled with damping fluid, which controls the movement speed of the piston rod 8 to achieve smooth energy decay. One end of the sliding shaft 4 is located on the inner wall of the airbag 2, and both ends of the buffer spring 5 are fixedly connected to the outer wall of the sliding shaft 4. The other end of the sliding shaft 4 is slidably connected to the inside of the rotating shaft 6. One end of the connecting rod 7 is rotatably connected to the outer wall of the rotating shaft 6, and the piston rod 8 is rotatably connected to the other end of the connecting rod 7. The outer wall of the piston rod 8 is slidably connected to the inside of the damper 9.

[0029] Specifically, the airbag 2 provides basic elastic support and has a shock-absorbing component on its inner wall to effectively disperse impact force under high load conditions, reducing the direct force on the airbag 2 and thus extending its service life. The shock-absorbing component consists of a sliding shaft 4, a buffer spring 5, a rotating shaft 6, a connecting rod 7, a piston rod 8, and a damper 9. When impacted, the movement of the airbag 2 will cause the sliding shaft 4 to extend and retract, while the external buffer spring 5 will compress or rebound accordingly, playing an initial buffering role and preventing damage to the air spring from the instantaneous impact. During the buffering process, the bottom of the sliding shaft 4 will slide inside the waist plate 3, so that the impact force is gradually transmitted to the rotating shaft 6, and then transmitted through one end of the connecting rod 7. When the connecting rod 7 drives the piston rod 8 at the other end, the piston rod 8 will slide inside the damper 9, so that the impact force is further buffered during the transmission process, and the rebound amplitude of the vibration is reduced through the damping effect, so that it can maintain good energy absorption capacity under high load conditions, reduce rubber aging and fatigue caused by long-term high-load operation of the air spring, and improve its overall load-bearing capacity and durability.

[0030] Reference Figures 4-6The mounting plate 1 has ventilation holes 20 inside to guide air into the air spring, ensuring smooth inflation and preventing gas leakage. A sealing plug 10 is slidably connected inside the mounting plate 1, which can be disassembled together with the filter plate 11 for easy cleaning. A threaded ring 12 is threadedly connected to the bottom of the sealing plug 10, with the external thread of the threaded ring 12 matching the internal thread of the sealing plug 10. The filter plate 11 is fixedly connected to the lower surface of the threaded ring 12 to remove dust and impurities, preventing blockage or contamination of the airbag 2. The internal assembly includes a turntable 14, which rotates to move a slide rod 15 inside an arc-shaped groove 17, thus moving the locking plate 16. The slide rod 15, driven by the turntable 14, slides along the arc-shaped groove 17, further pushing the locking plate 16 to move. The locking plate 16 and the arc-shaped groove 17 provide a trajectory for the slide rod 15, ensuring the locking plate 16 can slide smoothly to complete the unlocking or locking operation. The outer wall of the turntable 14 is rotatably connected to the inside of the sealing plug 10. The arc-shaped groove 17 is formed in... Inside the turntable 14, the outer wall of the slide rod 15 is slidably connected to the pre-set arc-shaped slide groove 17 inside the turntable 14. One end of the snap-fit ​​plate 16 is fixedly connected to the outer wall of the slide rod 15. A rotating rod 13 is fixedly connected to the middle of the turntable 14, and a handle 21 is fixedly connected to the top of the rotating rod 13. A reset assembly is provided inside the rotating rod 13, which includes a torsion spring 19, responsible for providing elasticity to make the disassembly and assembly of the filter plate 11 smoother, while ensuring the tightness after assembly. One end of the torsion spring 19 is fixedly connected to the rotating rod 15. Inside the sealing plug 10, a fixed shaft 18 is fixedly connected, a torsion spring 19 is sleeved on the outer wall of the fixed shaft 18, and the fixed shaft 18 is used to limit the torsion spring 19. The outer wall of the snap-fit ​​plate 16 is slidably connected to the sealing plug 10 and the mounting plate 1, and the snap-fit ​​plate 16 is used to limit the sealing plug 10. The outer wall of the filter plate 11 is slidably connected to the inside of the mounting plate 1, and the filter plate 11 is used to filter the air. The outer wall of the piston rod 8 is slidably connected to the inside of the waist plate 3, and the damper 9 is fixedly connected to the outer wall of the waist plate 3.

[0031] Specifically, during inflation, the air valve inside the mounting plate 1 is activated first, allowing air to flow through the ventilation hole 20 into the filter plate 11. The filter plate 11 performs preliminary filtration of the air, removing particulate impurities and oil stains to prevent impurities from entering the air bladder 2 and causing blockage or contamination, thus affecting the performance of the air spring. After long-term operation, to maintain the cleanliness of the filtration system, the user can rotate the rotating rod 13 by using the handle 21. At this time, the torsion spring 19 will twist accordingly, further driving the turntable 14 to rotate. The turntable 14 has an arc-shaped sliding groove 17 inside. During its rotation, the sliding rod 15 will move along the trajectory of the arc-shaped sliding groove 17, and drive the locking plate 16 to engage with the sealing plug 10. The mounting plate 1 slides inside. When the snap-fit ​​plate 16 is fully moved inside the sealing plug 10, the sealing plug 10 and the filter plate 11 are unlocked together, and the user can easily remove them. At this time, simply rotate the filter plate 11, and it can be easily disassembled through the threaded ring 12 for cleaning or replacement of a new filter device. After maintenance is completed, put the sealing plug 10 and the filter plate 11 back into their original positions, and then release the handle 21. At this time, the torsion spring 19 will elastically rebound to drive the snap-fit ​​plate 16 back into the mounting plate 1, achieving automatic fixation. This not only ensures the air quality of the air spring during long-term operation, but also makes the maintenance process more convenient and efficient, greatly reducing the cost of manual maintenance and improving the overall reliability and service life.

[0032] Working principle: When a car shock absorber air spring that can withstand high loads is needed, the airbag 2 first provides basic shock absorption. During this process, the movement of the airbag 2 will cause the sliding shaft 4 and the buffer spring 5 to extend and retract, so that the buffer spring 5 will provide initial cushioning. At this time, the bottom of the sliding shaft 4 will slide inside the waist plate 3, and then drive one end of the connecting rod 7 to move through the rotating shaft 6. Then, the other end of the connecting rod 7 will drive the piston rod 8 to slide inside the damper 9, thereby absorbing shock.

[0033] In addition, during inflation, the air valve inside the mounting plate 1 is activated, which drives air through the ventilation hole 20 to the interior of the filter plate 11. The air is then filtered by the filter plate 11. After a long period of operation, the drive handle 21 drives the rotating rod 13 to rotate, and at the same time, the torsion spring 19 is twisted, which drives the turntable 14 to rotate. At this time, the arc-shaped sliding groove 17 inside the turntable 14, in conjunction with the sliding rod 15, drives the snap-fit ​​plate 16 to slide inside the sealing plug 10 and the mounting plate 1. When the snap-fit ​​plate 16 has completely moved into the interior of the sealing plug 10, the sealing plug 10 and the filter plate 11 can be removed together. Finally, by rotating the filter plate 11 in conjunction with the threaded ring 12, the filter plate 11 can be easily removed for cleaning or replacement. When cleaning, first put the sealing plug 10 and the filter plate 11 back in their original positions, and then release the handle 21. The reverse rotation of the torsion spring 19 drives the snap-fit ​​plate 16 back into the interior of the mounting plate 1, thus achieving fixation.

[0034] 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 high-load-bearing automotive shock-absorbing air spring, comprising a mounting plate (1), characterized in that: An airbag (2) is fixedly connected to the lower surface of the mounting plate (1), a waist plate (3) is fixedly connected to the lower surface of the airbag (2), and a shock-absorbing component is provided on the inner wall of the airbag (2). The shock absorption assembly includes a sliding shaft (4), a buffer spring (5), a rotating shaft (6), a connecting rod (7), a piston rod (8), and a damper (9). One end of the sliding shaft (4) is disposed on the inner wall of the airbag (2). Both ends of the buffer spring (5) are fixedly connected to the outer wall of the sliding shaft (4). The other end of the sliding shaft (4) is slidably connected to the inside of the rotating shaft (6). One end of the connecting rod (7) is rotatably connected to the outer wall of the rotating shaft (6). The piston rod (8) is rotatably connected to the other end of the connecting rod (7). The outer wall of the piston rod (8) is slidably connected to the inside of the damper (9).

2. The automotive shock absorber air spring capable of withstanding high loads according to claim 1, characterized in that: The mounting plate (1) has ventilation holes (20) inside. A sealing plug (10) is slidably connected inside the mounting plate (1). A threaded ring (12) is threadedly connected to the bottom of the sealing plug (10). The external thread of the threaded ring (12) matches the internal thread of the sealing plug (10). A filter plate (11) is fixedly connected to the lower surface of the threaded ring (12). A disassembly and assembly assembly is provided inside the sealing plug (10).

3. The automotive shock absorber air spring capable of withstanding high loads according to claim 2, characterized in that: The assembly and disassembly components include a turntable (14), a slide rod (15), a snap-fit ​​plate (16), and an arc-shaped groove (17). The outer wall of the turntable (14) is rotatably connected to the inside of the sealing plug (10). The arc-shaped groove (17) is opened inside the turntable (14). The outer wall of the slide rod (15) is slidably connected to the arc-shaped groove (17) inside the turntable (14). One end of the snap-fit ​​plate (16) is fixedly connected to the outer wall of the slide rod (15). A rotating rod (13) is fixedly connected to the middle of the turntable (14). A handle (21) is fixedly connected to the top of the rotating rod (13). A reset component is provided inside the rotating rod (13).

4. The automotive shock absorber air spring capable of withstanding high loads according to claim 3, characterized in that: The reset assembly includes a torsion spring (19), one end of which is fixedly connected inside the rotating rod (13), and a fixed shaft (18) is fixedly connected inside the sealing plug (10).

5. The automotive shock absorber air spring capable of withstanding high loads according to claim 4, characterized in that: The torsion spring (19) is sleeved on the outer wall of the fixed shaft (18), and the fixed shaft (18) is used to limit the torsion spring (19).

6. The automotive shock absorber air spring capable of withstanding high loads according to claim 3, characterized in that: The outer wall of the snap-fit ​​plate (16) is slidably connected to the sealing plug (10) and the mounting plate (1), and the snap-fit ​​plate (16) is used to limit the sealing plug (10).

7. The automotive shock absorber air spring capable of withstanding high loads according to claim 3, characterized in that: The outer wall of the filter plate (11) is slidably connected to the inside of the mounting plate (1), and the filter plate (11) is used to filter air.

8. The automotive shock absorber air spring capable of withstanding high loads according to claim 1, characterized in that: The piston rod (8) is slidably connected to the inside of the waist plate (3) on its outer wall, and the damper (9) is fixedly connected to the outer wall of the waist plate (3).

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