Vehicle body performance damper

Abstract

The utility model relates to a vehicle body performance damper which comprises a connecting rod, a cylinder body and an oil seal base plate, the oil seal base plate is arranged at one end of the connecting rod, the connecting rod penetrates through the oil seal base plate and is arranged in the cylinder body, and a mounting opening is formed in the end, away from the oil seal base plate, of the cylinder body and provided with a first positioning boss for mounting an inflation piece. The inflation piece is welded to the first positioning boss and comprises a connecting part, a second positioning boss and an inflation opening, the connecting part is welded to the first positioning boss, the second positioning boss is arranged in the middle of the connecting part, the inflation opening is formed in one side of the second positioning boss and communicated with the interior of the barrel, a plugging piece is arranged in the inflation opening, and the plugging piece is in interference fit with the inflation opening; the second positioning boss is sleeved with a connecting piece connected with the outside, the air inflation piece is arranged to inflate air into the cylinder through the air inflation opening, the cylinder is filled with the air, the plugging piece is driven into the air inflation opening to be in interference fit for sealing, and the air inflation mode can make the air pressure in the damper more stable.

Description

Technical Field

[0001] The utility model relates to the field of dampers, in particular to a vehicle body performance damper. Background Art

[0002] During driving, the unevenness of the road surface will cause vibrations in the vehicle suspension system. The function of the damper is to convert the energy of these vibrations into heat energy, thereby reducing the vibration amplitude and ensuring the driving smoothness and riding comfort of the vehicle. In the vehicle suspension system, the damper is used in cooperation with the spring. When the wheel passes over bumps or other obstacles, the spring will absorb the impact energy and compress, while the damper is responsible for controlling the compression and rebound speed of the spring to prevent the vehicle body from shaking excessively. The vehicle damper not only improves driving comfort but also has a significant impact on handling performance.

[0003] The publication number is: CN114001116A, which discloses a damper sealing structure of an air spring shock absorber and an automobile. The damper sealing structure of the air spring shock absorber includes an oil seal backing plate and an oil storage cylinder sleeved on the connecting rod. The oil seal backing plate is located inside the oil storage cylinder. A frustum is formed on the oil seal backing plate, and a stop portion is formed at the end of the oil storage cylinder. The stop portion is annular, and the inner hole of the stop portion is matched with the frustum so that the top surface of the frustum and the end surface of the stop portion close to the buffer block are in the same plane, avoiding the inner hole of the stop portion from generating a shearing force on the buffer block installed on the end cover and damaging the buffer block, thereby improving the service life of the buffer block. However, this technology does not optimize the air filling method of the damper, which will cause the air pressure inside the damper to be unstable. The unstable air pressure will cause poor shock absorption effect of the damper, resulting in unstable air pressure and force value and function of the gas inside the cylinder block, thus triggering a series of safety problems. Therefore, this technology still has some room for improvement. Summary of the Invention

[0004] The technical problem to be solved by the utility model is to provide a vehicle body performance damper aiming at the deficiencies of the above-mentioned prior art.

[0005] To achieve the above object, the utility model provides the following technical solution: a vehicle body performance damper, including a connecting rod, a cylinder body, and an oil seal backing plate. The oil seal backing plate is arranged at one end of the connecting rod, and the connecting rod passes through the oil seal backing plate and is placed inside the cylinder body. It is characterized in that: an installation port is opened at one end of the cylinder body away from the oil seal backing plate, and the installation port is provided with a first positioning boss for installing an air filling member. The air filling member is welded to the first positioning boss. The air filling member includes a connecting portion, a second positioning boss, and an air filling port. The connecting portion is welded to the first positioning boss. The second positioning boss is arranged in the middle of the connecting portion. The air filling port is arranged on one side of the second positioning boss and is communicated with the inside of the cylinder body. A plugging member is arranged in the air filling port, and the plugging member is in interference fit with the air filling port. A connecting member connected to the outside is sleeved on the second positioning boss.

[0006] With the above technical solution, the inflatable part is arranged to inject gas into the cylinder through the inflation port. When the cylinder is filled with gas, the plugging part is driven into the inflation port for interference fit to seal. The plugging part can be a steel needle or a steel ball. This inflation method can make the air pressure in the damper more stable, improve the shock absorption effect of the vehicle damper, not only enhance the driving smoothness and handling stability of the vehicle, extend the service life of vehicle components, improve the riding comfort, but also enhance the safety.

[0007] The above-mentioned vehicle body performance damper can be further arranged as follows: a free piston is arranged in the cylinder. The free piston divides the cylinder into an oil cavity and a gas cavity. The oil cavity is located at one end of the oil seal backing plate of the cylinder, and the gas cavity is located at one end of the inflatable part of the cylinder. The inflation port is communicated with the gas cavity. The free piston is surrounded by a first groove, and a first sealing ring is arranged in the first groove.

[0008] With the above technical solution, by separating the oil cavity and the gas cavity, the free piston can control the damping force more precisely and achieve a more stable shock absorption effect. The first groove and the first sealing ring arranged on the free piston improve the sealing performance between the oil cavity and the gas cavity. The setting of the free piston in the vehicle body damper not only improves the damping performance, extends the service life, and enhances the safety, but also simplifies the maintenance and adjustment process, optimizes the texture of the suspension system, and saves energy consumption.

[0009] The above-mentioned vehicle body performance damper can be further arranged as follows: a low-speed piston is sleeved on the connecting rod. The low-speed piston is provided with a second sealing ring. Damping sheets for increasing the damping force are fixedly arranged at both ends of the low-speed piston. Fixing gaskets for fixing the damping sheets are sleeved on the connecting rod at both ends of the damping sheets.

[0010] With the above technical solution, the design of the low-speed piston can control the damping force more precisely and achieve a more stable shock absorption effect. Especially when driving at high speed, it can effectively reduce the vibration and sway of the vehicle body, enabling the damper to quickly respond to external impacts, effectively reducing the vibration and sway of the vehicle body, enhancing the overall performance of the suspension system. By optimizing the damping force distribution, the vehicle body vibration caused by uneven road surfaces is reduced, and the riding comfort is improved.

[0011] The above-mentioned vehicle body performance damper can be further arranged as follows: a pilot valve is sleeved on the connecting rod at the position of the oil seal backing plate. The pilot valve is placed in the oil cavity and abuts against the oil seal backing plate. The pilot valve is surrounded by a number of second grooves, and wire snap rings are arranged in the second grooves.

[0012] With the above technical solution, the pilot valve can control the damping force more precisely, achieving a more stable shock absorption effect. Especially when driving at high speed, it can effectively reduce the vibration and sway of the vehicle body, enhancing the stability of the suspension system. Especially in emergency operations or extreme road conditions, it helps to maintain vehicle control, reduce the vibration and sway of the vehicle body. The design of the pilot valve reduces the risk of accidents caused by the instability of the suspension system. The wire retaining ring in the second groove ensures the sealing between the pilot valve and the oil seal backing plate, thereby providing more precise damping control.

[0013] The above-mentioned vehicle body performance damper can be further configured as follows: An elastic member is sleeved on the connecting rod between the low-speed piston and the pilot piston. One end of the elastic member abuts against the fixed gasket and the other end abuts against the pilot piston. Threads are provided at both ends of the connecting rod on the low-speed piston and the pilot piston, and nuts are installed on the threads. The nut at one end of the low-speed piston abuts against the fixed gasket.

[0014] With the above technical solution, the elastic member counteracts the reaction force of the damper air chamber, compresses or expands as needed, thereby responding to the pressure changes inside the system. By storing and releasing energy, it balances the force generated by the action of the air chamber, ensuring the stable operation of the system and improving the overall stability.

[0015] The beneficial effects of the present utility model: Gas is introduced into the cylinder through the inflation port. When the gas fills the cylinder, the plugging member is driven into the inflation port for interference fit for sealing. This inflation method can make the air pressure inside the damper more stable, improving the driving smoothness and handling stability of the vehicle, extending the service life of vehicle components, enhancing the riding comfort, and strengthening the safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of the present utility model;

[0017] Figure 2 is a sectional view of the present utility model;

[0018] Figure 3 is an exploded view of the inflation member structure of the present utility model;

[0019] Figure 4 is an exploded view of the free piston structure of the present utility model;

[0020] Figure 5 is an exploded view of the low-speed piston structure of the present utility model;

[0021] Label Notes: 1 - connecting rod, 2 - cylinder body, 3 - oil seal backing plate, 4 - installation port, 5 - inflatable part, 6 - first positioning boss, 7 - plugging part, 8 - connecting piece, 9 - free piston, 10 - oil cavity, 11 - gas cavity, 12 - first groove, 13 - first sealing ring, 14 - low-speed piston, 15 - second sealing ring, 16 - damping piece, 17 - fixing gasket, 18 - guiding valve, 19 - second groove, 20 - wire snap ring, 21 - elastic part, 22 - thread, 23 - nut, 501 - connecting part, 502 - second positioning boss, 503 - inflation port. Detailed implementation mode

[0022] This specific embodiment is only an interpretation of the present utility model, and it is not a limitation to the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without creative contributions as needed, but as long as it is within the scope of the claims of the present utility model, it is protected by the patent law.

[0023] Such as Figures 1-3The present utility model provides the following technical solution. A vehicle body performance damper includes a connecting rod 1, a cylinder body 2, and an oil seal backing plate 3. The oil seal backing plate 3 is arranged at one end of the connecting rod 1, and the connecting rod 1 passes through the oil seal backing plate 3 and is placed inside the cylinder body 2. It is characterized in that: an installation opening 4 is provided at one end of the cylinder body 2 away from the oil seal backing plate 3, and a first positioning boss 6 for installing an inflation member 5 is arranged at the installation opening 4. The inflation member 5 is welded to the first positioning boss 6. The inflation member 5 includes a connecting portion 501, a second positioning boss 502, and an inflation port 503. The connecting portion 501 is welded to the first positioning boss 6. The second positioning boss 502 is arranged in the middle of the connecting portion 501. The inflation port 503 is arranged on one side of the second positioning boss and communicates with the inside of the cylinder body 2. A plugging member 7 is arranged in the inflation port 503, and the plugging member 7 is in interference fit with the inflation port 503. A connecting member 8 connected to the outside is sleeved on the second positioning boss 502. The inflation member 5 is arranged to inject gas into the cylinder body 2 through the inflation port 503. When the cylinder body 2 is filled with gas, the plugging member 7 is driven into the inflation port 503 for interference fit to seal. This inflation method can make the air pressure in the damper more stable, improve the shock absorption effect of the vehicle damper, not only enhance the driving smoothness and handling stability of the vehicle, extend the service life of vehicle components, improve the riding comfort, and enhance the safety. A free piston 9 is arranged inside the cylinder body 2. The free piston 9 divides the inside of the cylinder body 2 into an oil cavity 10 and a gas cavity 11. The oil cavity 10 is located at the end of the cylinder body 2 with the oil seal backing plate 3, and the gas cavity 11 is located at the end of the cylinder body 2 with the inflation member 5. The inflation port 503 communicates with the gas cavity 11. A first groove 12 is arranged around the free piston 9, and a first sealing ring 13 is arranged in the first groove 12. The free piston 9 can more precisely control the damping force by separating the oil cavity 10 and the gas cavity 11, achieving a more stable shock absorption effect. The first groove 12 and the first sealing ring 13 arranged on the free piston 9 improve the sealing performance between the oil cavity 10 and the gas cavity 11. The arrangement of the free piston 9 in the vehicle body damper not only enhances the damping performance, extends the service life, and improves the safety, but also simplifies the maintenance and adjustment process, optimizes the texture of the suspension system, and saves energy consumption.

[0024] As Figures 2-5The present utility model provides the following technical solution: a vehicle body performance damper. A low-speed piston 14 is sleeved on a connecting rod 1. A second sealing ring 15 is arranged on the low-speed piston 14. Damping sheets 16 for increasing damping force are fixedly arranged at both ends of the low-speed piston 14. Fixing gaskets 17 for fixing the damping sheets 16 are sleeved on the connecting rod 1 at both ends of the damping sheets 16. The design of the low-speed piston 14 can more precisely control the damping force and achieve a more stable shock absorption effect. Especially when driving at high speed, it can effectively reduce the vibration and sway of the vehicle body, enabling the damper to quickly respond to external impacts, effectively reducing the vibration and sway of the vehicle body, and improving the overall performance of the suspension system. By optimizing the damping force distribution, the vehicle body vibration caused by uneven road surfaces is reduced, and the riding comfort is improved. A pilot valve 18 is sleeved on the connecting rod 1 at the oil seal backing plate 3. The pilot valve 18 is placed in the oil cavity 10 and abuts against the oil seal backing plate 3. A number of second grooves 19 are arranged around the pilot valve 18. A wire retaining ring 20 is arranged in the second grooves 19. The pilot valve 18 can more precisely control the damping force and achieve a more stable shock absorption effect. Especially when driving at high speed, it can effectively reduce the vibration and sway of the vehicle body, enhancing the stability of the suspension system. Especially in emergency operations or extreme road conditions, it helps to maintain vehicle control and reduce the vibration and sway of the vehicle body. The design of the pilot valve 18 reduces the risk of accidents caused by the instability of the suspension system. The wire retaining ring 20 in the second grooves 19 ensures the sealing between the pilot valve 18 and the oil seal backing plate 3, thereby providing more precise damping control. An elastic member 21 is sleeved on the connecting rod 1 between the low-speed piston 14 and the pilot piston. One end of the elastic member 21 abuts against the fixing gasket 17 and the other end abuts against the pilot piston. Threads 22 are provided at both ends of the connecting rod 1 at the low-speed piston 14 and the pilot piston. Nuts 23 are installed on the threads 22. The nut 23 at one end of the low-speed piston 14 abuts against the fixing gasket 17. The elastic member 21 counteracts the reaction force of the damper air cavity 11 and compresses or expands as needed, thereby responding to the pressure changes inside the system. By storing and releasing energy, the force generated by the action of the air cavity 11 is balanced, ensuring the stable operation of the system and improving the overall stability.

[0025] Advantages of the present utility model: Gas is introduced into the cylinder body 2 through the inflation port 503. The cylinder body 2 is filled with gas and the plugging member 7 is driven into the inflation port 503 for interference fit to seal. This inflation method can make the air pressure inside the damper more stable, improving the driving smoothness and handling stability of the vehicle, prolonging the service life of vehicle components, enhancing the riding comfort, and enhancing the safety.

Claims

1. A vehicle body performance damper, comprising a connecting rod, a cylinder, and an oil seal pad, wherein the oil seal pad is arranged at one end of the connecting rod, and the connecting rod is passed through the oil seal pad and placed in the cylinder, characterized in that: The cylinder is provided with an installation opening at one end away from the oil seal gasket, the installation opening is provided with a first positioning boss for installing an inflatable member, the inflatable member is welded to the first positioning boss, the inflatable member includes a connecting portion, a second positioning boss, and an inflating port, the connecting portion is welded to the first positioning boss, the second positioning boss is provided in the middle of the connecting portion, the inflating port is provided on one side of the second point boss and communicates with the interior of the cylinder, a blocking member is provided in the inflating port, the blocking member is interference fit with the inflating port, and the second positioning boss is sleeved with a connecting member connected to the outside.

2. A vehicle body performance damper according to claim 1, characterized in that: A free piston is arranged in the cylinder body, and the free piston divides the cylinder body into an oil cavity and an air cavity. The oil cavity is placed at one end of the oil seal pad of the cylinder body, and the air cavity is placed at one end of the inflatable part of the cylinder body. The inflation port is communicated with the air cavity. A first groove is arranged around the free piston, and an oil first sealing ring is arranged in the first groove.

3. A vehicle body performance damper according to claim 2, characterized in that: The connecting rod sleeve is provided with a low-speed piston, the low-speed piston is provided with a second sealing ring, damping plates for increasing damping force are fixedly provided at both ends of the low-speed piston, and fixed gaskets for fixing the damping plates are sleeved at both ends of the connecting rod.

4. A vehicle body performance damper according to claim 3, characterized in that: The connecting rod is sleeved with a guide valve at the oil seal pad, the guide valve is placed in the oil cavity and abuts against the oil seal pad, a plurality of second grooves are arranged around the guide valve, and a wire retaining ring is arranged in the second groove.

5. A vehicle body performance damper according to any one of claims 1 to 4, characterized in that: The connecting rod is located between the low-speed piston and the guide piston and is sleeved with an elastic member, one end of the elastic member abuts against a fixed gasket and the other end abuts against the guide piston, the connecting rod is located at both ends of the low-speed piston and the guide piston and is provided with threads, nuts are installed on the threads, and the nut located at one end of the low-speed piston abuts against the fixed gasket.

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