Variable damping type shock absorber

Abstract

The utility model relates to the field of shock absorbers, in particular to a variable damping type shock absorber which comprises a main shock absorption rod, an assembly main body used for assembling the variable damping type shock absorber, a damping spring, an upper threaded rod arranged on the main shock absorption rod and used for carrying out preliminary buffering and shock absorption, and a lower threaded rod arranged on the main shock absorption rod and used for carrying out secondary buffering and shock absorption. The outer portion of the upper threaded rod is movably connected with an upper pressing plate, and a reinforcing gasket is arranged above the upper pressing plate. According to the damping device, the upper threaded rod, the upper pressing plate, the lower threaded rod, the damping oil cavity, the movable hole, the cavity base and the half-moon sealing plate are arranged, and a second hexagon nut can be twisted to downwards press the upper pressing plate from the upper threaded rod according to the damping requirement of current use; the upper pressing plate extrudes the damping spring on the main damping rod, so that the aim of adjusting the distance between the springs is achieved, the distance between the springs is adjusted, dynamic balance of the shock absorber in the compression and rebounding process is achieved, and therefore the driving stability and the control performance of a vehicle are improved.

Description

Technical Field

[0001] This utility model relates to the field of vibration dampers, specifically to a variable damping vibration damper. Background Technology

[0002] Shock absorbers are an important component of automotive suspension systems. They improve ride comfort and handling by suppressing the rebound and oscillation of springs after absorbing road impacts. Variable damping shock absorbers, as an advanced automotive shock absorption device, can automatically adjust the damping force according to vehicle driving conditions and road conditions.

[0003] Existing variable damping shock absorbers rely on injecting pressure into the oil chamber based on road vibrations to adjust the damping force. This pressure causes the hydraulic oil inside the chamber to move, increasing piston resistance. However, this lack of adjustment mechanisms for the external spring spacing and proper internal fluid flow leads to increased friction and wear between internal components. Over time, this shortens the shock absorber's lifespan and increases maintenance and replacement costs. Furthermore, adjusting the external spring spacing significantly impacts the stiffness and damping characteristics of the suspension system.

[0004] Therefore, it is necessary to invent a variable damping vibration damper to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a variable damping shock absorber. Through an upper threaded rod, an upper clamping plate, a lower threaded rod, a damping oil chamber, a movable hole, a cavity seat, and a semi-circular sealing plate, this variable damping shock absorber provides means to adjust the external spring spacing and ensure smooth flow of internal oil. This reduces friction between internal components, extends the shock absorber's service life, lowers maintenance and replacement costs, and ensures the effectiveness of the suspension system's stiffness and damping characteristics. This addresses the problem in existing variable damping shock absorbers where, due to the method of injecting pressure into the oil chamber based on road vibration to increase piston resistance and adjust damping force, the variable damping shock absorber lacks means to adjust the external spring spacing and ensure smooth flow of internal oil. The lack of effective oil flow and suspension adjustment methods leads to increased friction and wear between internal components, which, over time, shortens the shock absorber's service life and increases maintenance and replacement costs. Furthermore, the adjustment of the external spring spacing significantly impacts the stiffness and damping characteristics of the suspension system.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a variable damping shock absorber, including a main damping rod for assembling the main body of the variable damping shock absorber;

[0007] A damping spring is installed on the main shock absorber rod for initial buffering and shock absorption. An upper threaded rod is fixedly installed on the top of the main shock absorber rod. An upper clamping plate is movably connected to the outside of the upper threaded rod. A reinforcing washer is installed on the top of the upper clamping plate. A first hexagonal nut is installed on the top of the reinforcing washer.

[0008] An upper buffer pad is set at the bottom of the main shock absorber rod to protect the main shock absorber rod and reduce impact. A lower threaded rod is fixedly installed at the bottom of the main shock absorber rod. A second hexagonal nut is movably connected to the outside of the lower threaded rod. A lower buffer pad is set below the second hexagonal nut. A piston rod is fixedly installed at the bottom of the lower threaded rod. A piston head is fixedly installed at one end of the piston rod.

[0009] An oil chamber cover is located outside the piston rod and is used to seal the oil chamber. A fixing bolt passes through the top of the oil chamber cover. One end of the fixing bolt is movably connected to a damping oil chamber. The damping oil chamber has a movable hole inside. A cavity seat is fixedly installed at the bottom of the damping oil chamber. An adjusting rod is provided at the bottom of the cavity seat. A movable rod is fixedly installed at one end of the adjusting rod. A crescent-shaped sealing plate is fixedly installed outside the movable rod.

[0010] Preferably, the damping spring is movably connected to the main shock absorber rod, and the upper threaded rod is threadedly connected to the upper clamping plate.

[0011] Preferably, the second hexagonal nut is movably connected to the lower threaded rod, and the center line of the lower threaded rod coincides with the center line of the main shock absorber rod.

[0012] Preferably, the damping oil chamber is threadedly connected to the oil chamber cover, and the fixing bolts are evenly distributed on the oil chamber cover.

[0013] Preferably, the cavity seat is fixedly connected to the damping oil cavity, and the movable hole is symmetrically arranged with respect to the central axis of the damping oil cavity.

[0014] Preferably, the crescent-shaped sealing plate is movably connected to the cavity seat, and the adjusting rod is fixedly connected to the movable rod.

[0015] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0016] 1. This utility model is equipped with an upper threaded rod, an upper clamping plate, a lower threaded rod, a damping oil chamber, a movable hole, a cavity seat, and a crescent-shaped sealing plate. According to the current damping requirements, first, the second hexagonal nut is turned to press the upper clamping plate down from the upper threaded rod, causing the upper clamping plate to compress the damping spring on the main shock absorber rod, thereby adjusting the spring spacing. This adjustment of the spring spacing helps to achieve dynamic balance of the shock absorber during compression and rebound, thus improving the vehicle's driving stability and handling performance. After the damping spring completes one buffer cycle, according to the current damping requirements, the adjusting rod can be rotated using external equipment, causing the movable rod to move the crescent-shaped sealing plate to the cavity seat. The internal rotation removes the obstructed moving hole, allowing the oil to flow into the damping oil chamber under the pressure of the piston head, and then back into the damping oil chamber. This allows the oil to circulate within the damping oil chamber. By adjusting the flow of the oil, the variable damping shock absorber can provide the best damping effect under different driving conditions, thereby improving the driving experience and enhancing the secondary buffering effect. This combination allows the variable damping shock absorber to adjust the external spring spacing and ensure smooth internal oil flow, reducing friction between internal components, extending the service life of the shock absorber, reducing maintenance and replacement costs, and ensuring the stiffness and damping characteristics of the suspension system.

[0017] 2. This utility model is equipped with an upper clamping plate, a reinforcing washer, a first hexagonal nut, an upper buffer pad, a lower threaded rod, a second hexagonal nut, and a lower buffer pad. When the damping spring spacing is adjusted using this variable damping shock absorber, the position of the upper clamping plate on the upper threaded rod can be strengthened by the reinforcing washer and the first hexagonal nut. This restricts the damping spring to the spacing adjusted by the first and second hexagonal nuts during buffering. Together with the upper and lower buffer pads, it reduces the damage to the upper and lower threaded rods caused by the back-and-forth impact force, thereby extending the overall service life of the variable damping shock absorber. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the upper pressing plate structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the piston rod structure of this utility model;

[0022] Figure 4 This is a schematic diagram of the damping oil cavity structure of this utility model;

[0023] Figure 5 This is a schematic diagram of the semi-circular closed plate structure of this utility model.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Main shock absorber rod; 2. Damping spring; 3. Upper threaded rod; 4. Upper clamping plate; 5. Reinforcing washer; 6. First hexagonal nut; 7. Upper buffer pad; 8. Lower threaded rod; 9. Second hexagonal nut; 10. Lower buffer pad; 11. Piston rod; 12. Piston head; 13. Oil chamber cover; 14. Fixing bolt; 15. Damping oil chamber; 16. Movable hole; 17. Cavity seat; 18. Adjusting rod; 19. Movable rod; 20. Half-moon sealing plate. Detailed Implementation

[0026] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0027] This utility model provides, for example Figure 1-5 The variable damping shock absorber shown includes a main damping rod 1, which is used to assemble the main body of the variable damping shock absorber.

[0028] Damping spring 2 is installed on the main shock absorber 1 for initial buffering and shock absorption. An upper threaded rod 3 is fixedly installed on the upper shock absorber 1. An upper pressure plate 4 is movably connected to the outside of the upper threaded rod 3. A reinforcing shim 5 is installed on the upper pressure plate 4. A first hexagonal nut 6 is installed on the upper pressure plate 4.

[0029] The upper buffer pad 7 is set at the bottom of the main shock absorber 1 to protect the main shock absorber 1 and reduce impact. The bottom of the main shock absorber 1 is fixedly installed with a lower threaded rod 8. The lower threaded rod 8 is movably connected to the outside of the second hexagonal nut 9. The lower buffer pad 10 is set below the second hexagonal nut 9. The bottom of the lower threaded rod 8 is fixedly installed with a piston rod 11. One end of the piston rod 11 is fixedly installed with a piston head 12.

[0030] An oil chamber cover 13 is disposed outside the piston rod 11 to seal the oil chamber. A fixing bolt 14 passes through the top of the oil chamber cover 13. One end of the fixing bolt 14 is movably connected to a damping oil chamber 15. An movable hole 16 is opened inside the damping oil chamber 15. A cavity seat 17 is fixedly installed at the bottom of the damping oil chamber 15. An adjusting rod 18 is provided at the bottom of the cavity seat 17. A movable rod 19 is fixedly installed at one end of the adjusting rod 18. A crescent-shaped sealing plate 20 is fixedly installed on the outside of the movable rod 19. According to the current use... To meet the damping requirements, the adjusting rod 18 is rotated via an external device, causing the movable rod 19 to rotate the crescent-shaped sealing plate 20 inside the cavity seat 17. This removes the obstructed movable hole 16, allowing the oil to flow into the cavity seat 17 through the damping oil chamber 15 under the pressure of the piston head 12, and then flow back into the damping oil chamber 15. This allows the oil to circulate within the damping oil chamber 15. By adjusting the flow of the oil, the variable damping shock absorber can provide the best damping effect under different driving conditions, thereby improving the driving experience.

[0031] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the damping spring 2 is movably connected to the main shock absorber rod 1, and the upper threaded rod 3 is threadedly connected to the upper clamping plate 4. The damping spring 2 and the main shock absorber rod 1 enable the variable damping shock absorber to complete the first stage of buffering and shock absorption. The second hexagonal nut 9 is movably connected to the lower threaded rod 8. The center line of the lower threaded rod 8 coincides with the center line of the main shock absorber rod 1. The position of the upper clamping plate 4 on the upper threaded rod 3 can be strengthened by the reinforcing shim 5 and the first hexagonal nut 6. This allows the damping spring 2 to be confined within the adjustable distance between the first hexagonal nut 6 and the second hexagonal nut 9 during buffering. The damping oil chamber 15 is threadedly connected to the oil chamber cover 13. The fixing bolts 14 are evenly distributed on the oil chamber cover 13. The damping oil chamber 15 and the oil chamber cover 13 facilitate the disassembly of the damping oil chamber 15 after long-term use for maintenance and replacement of the internal components.

[0032] like Figure 1 , Figure 4 and Figure 5 As shown, the cavity seat 17 is fixedly connected to the damping oil cavity 15. The movable hole 16 is symmetrically arranged around the central axis of the damping oil cavity 15. The movable rod 19 drives the crescent-shaped sealing plate 20 to rotate inside the cavity seat 17, thereby removing the blocked movable hole 16. Under the pressure of the piston head 12, the oil flows into the cavity seat 17 through the damping oil cavity 15 and then back into the damping oil cavity 15, allowing the oil to circulate in the damping oil cavity 15. The crescent-shaped sealing plate 20 is movably connected to the cavity seat 17, and the adjusting rod 18 is fixedly connected to the movable rod 19. The operation of the crescent-shaped sealing plate 20 is simple, and the movable hole 16 can be opened or closed according to the current needs.

[0033] The working principle of this practical device is as follows: First, during installation of the variable damping shock absorber, the second hexagonal nut 9 is turned downwards from the upper threaded rod 3 to press down the upper clamping plate 4. This causes the upper clamping plate 4 to compress the damping spring 2 on the main damping rod 1, thus adjusting the spring spacing. After adjusting the spacing of the damping spring 2, the position of the upper clamping plate 4 on the upper threaded rod 3 can be reinforced by the reinforcing shim 5 and the first hexagonal nut 6. This confines the damping spring 2 within the spacing adjusted by the first and second hexagonal nuts 6 during buffering. Combined with the upper and lower buffer pads 7 and 10, this reduces the damage to the upper and lower threaded rods 3 and 8 caused by the back-and-forth impact. Next, the two ends of the variable damping shock absorber are installed in the desired environment. During use, the damping spring 2 and the main damping rod 1 allow the variable damping shock absorber to complete the first stage of buffering and damping. Then, according to the current damping requirements, the adjusting rod 18 is rotated via external equipment to adjust the moving rod... 19 drives the semi-circular sealing plate 20 to rotate inside the cavity seat 17, thereby removing the blocked movable hole 16. Then, the main damping rod 1 drives the piston rod 11 and piston head 12 to squeeze into the damping oil chamber 15 to complete the secondary buffering. At this time, under the pressure of the piston head 12, the oil flows into the cavity seat 17 through the damping oil chamber 15 and then flows back into the damping oil chamber 15. This allows the oil to circulate in the damping oil chamber 15. By adjusting the flow of the oil, the variable damping shock absorber can provide the best shock absorption effect under different driving conditions, thereby improving the driving experience and enhancing the secondary buffering effect. This gives the variable damping shock absorber the means to adjust the external spring spacing and allow the internal oil to flow smoothly, reducing the friction between the internal components of the shock absorber and extending the service life of the shock absorber. Finally, after completing all the installation and use of the variable damping shock absorber according to the above operations, routine maintenance of the device is required. In this way, the use process of the variable damping shock absorber is completed.

[0034] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A variable-damping shock absorber characterized by: Comprising The main shock-absorbing rod (1) is used for assembling the main body of the variable damping shock absorber; The damping spring (2) is arranged on the main shock-absorbing rod (1) and is used for preliminary buffering and shock absorption, and the upper threaded rod (3) is fixedly installed above the main shock-absorbing rod (1), the outer part of the upper threaded rod (3) is movably connected with the upper pressing plate (4), the upper part of the upper pressing plate (4) is provided with the reinforcing washer (5), and the upper part of the reinforcing washer (5) is provided with the first hexagonal nut (6); The upper buffer pad (7) is arranged at the bottom of the main shock-absorbing rod (1) and is used for protecting the main shock-absorbing rod (1) to reduce impact, and the lower threaded rod (8) is fixedly installed at the bottom of the main shock-absorbing rod (1), the outer part of the lower threaded rod (8) is movably connected with the second hexagonal nut (9), the lower part of the second hexagonal nut (9) is provided with the lower buffer pad (10), and the bottom of the lower threaded rod (8) is fixedly installed with the piston rod (11), one end of the piston rod (11) is fixedly installed with the piston head (12); The oil cavity cover (13) is arranged outside the piston rod (11) and is used for closing the oil cavity, and the upper part of the oil cavity cover (13) penetrates the fixing bolt (14), one end of the fixing bolt (14) is movably connected with the damping oil cavity (15), the inner part of the damping oil cavity (15) is provided with the movable hole (16), the bottom of the damping oil cavity (15) is fixedly installed with the cavity seat (17), the bottom of the cavity seat (17) is provided with the adjusting rod (18), one end of the adjusting rod (18) is fixedly installed with the movable rod (19), and the outer part of the movable rod (19) is fixedly installed with the half-moon closing plate (20).

2. A variable damping shock absorber according to claim 1, characterized in that: The damping spring (2) is movably connected with the main shock-absorbing rod (1), and the upper threaded rod (3) is threadedly connected with the upper pressing plate (4).

3. A variable damping shock absorber according to claim 1, wherein: The second hexagonal nut (9) is movably connected with the lower threaded rod (8), and the center line of the lower threaded rod (8) is consistent with the center line of the main shock-absorbing rod (1).

4. A variable-damping shock absorber according to claim 1, wherein: The damping oil cavity (15) is threadedly connected with the oil cavity cover (13), and the fixing bolts (14) are distributed at equal intervals on the oil cavity cover (13).

5. A variable-damping shock absorber according to claim 1, wherein: The cavity seat (17) is fixedly connected with the damping oil cavity (15), and the movable hole (16) is symmetrically arranged with the central axis of the damping oil cavity (15).

6. A variable-damping shock absorber according to claim 1, wherein: The half-moon closing plate (20) is movably connected with the cavity seat (17), and the adjusting rod (18) is fixedly connected with the movable rod (19).

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