A damper-adjustable shock absorber for a motor vehicle

Abstract

The application discloses a damping-adjustable shock absorber for a motor vehicle and relates to the technical field of motor vehicle shock absorbers. The damping-adjustable shock absorber for a motor vehicle comprises a damping cylinder, and a hydraulic rod is arranged at the middle part of the top end of the damping cylinder. The damping-adjustable shock absorber for a motor vehicle can be hinged through the ball head between the hemispherical cover and the ball hinge head, and can be slightly deflected and elastically guided under the cooperation of the small pressure rod and the small pressure spring, so that the connecting head can be slightly deflected and elastically guided in the inner cavity of the bottom disc, the vibration from the ground can be offset and damped by the large spring, the external force from the ground can be damped and weakened, the secondary damping and shock absorption function of the bottom connecting piece to the external force from the ground is realized, the secondary damping and shock absorption of the large spring to the external force on the top of the top body is assisted, the shaking from the vehicle body is secondarily weakened and braked by the motor vehicle, the vehicle body of the motor vehicle is more stable, and the damping-adjustable shock absorber has the adjustment function of the damping strength of the damping cylinder.

Description

Technical Field

[0001] This invention relates to the field of motor vehicle shock absorber technology, specifically to a damping adjustable shock absorber for motor vehicles. Background Technology

[0002] Shock absorbers are used to suppress the oscillations caused by the rebound of the spring after absorbing shock and the impact from the road surface. They are widely used in automobiles to accelerate the attenuation of vibrations in the chassis and body, thereby improving the ride comfort of the car. When driving over uneven roads, although the shock-absorbing spring can filter the vibrations of the road surface, the spring itself will still have reciprocating motion. Shock absorbers are devices used to suppress this spring bounce.

[0003] Existing motor vehicle damping shock absorbers cannot achieve secondary damping and shock absorption of external forces from the ground, cannot further weaken and brake the swaying of the vehicle body, have poor smooth braking effect on the vehicle body, and cannot adjust the damping strength of the shock absorber. Summary of the Invention

[0004] To achieve the above objectives, the present invention is implemented through the following technical solution: a damping adjustable shock absorber for motor vehicles, comprising a damping cylinder, wherein a hydraulic rod is installed at the top center of the damping cylinder, and the outer surface of the damping cylinder is spirally fitted with threaded protrusions to expand the effective contact area between the damping cylinder and the air, thereby facilitating rapid heat dissipation and cooling inside the damping cylinder; and a double rubber plug is installed on the top inner side of the damping cylinder.

[0005] It also includes a bottom connector, which is installed at the bottom of the damping cylinder, the bottom connector including a base plate installed at the bottom of the damping cylinder;

[0006] A top connector is installed on top of the hydraulic rod. A large spring is installed between the damping cylinder and the top connector and is fitted onto the outer surface of the damping cylinder. The top connector is spring-loaded to the bottom connector by the large spring. The top connector includes a top body installed on top of the hydraulic rod.

[0007] Preferably, a hard sealing plug is fitted to the bottom of the double rubber plug pad and is fitted together with the double rubber plug pad inside the damping cylinder. A partition is installed at the bottom of the hard sealing plug, which can move up and down inside the damping cylinder. A pressure regulating hole is opened in the middle of the outer surface of the hydraulic rod to control the pressure between the partition and the hard sealing plug.

[0008] Preferably, two movable plugs are installed on the inner side of the damping cylinder, located at the bottom of the control diaphragm and fixedly mounted on the outer surface of the hydraulic rod. A tension spring is fixedly connected between the two movable plugs in the middle, so that the two movable plugs can bounce up and down. The bottom side of the movable plug has a hole, which can be dissipated into the atmosphere through the outer surface of the damping cylinder and the threaded protrusion, so as to achieve the damping and shock absorption effect of the vibration energy of the motor vehicle.

[0009] Preferably, a connecting head handle is installed at the bottom center of the base plate, and a convex top platform is installed at the top center of the base plate, with a slot formed at the top center of the convex top platform.

[0010] Preferably, a top-mounted spring plate is fitted inside the slot, and the top side is fixedly connected to the inner wall of the slot. A spring pressure plate is connected at the bottom center. The tight fit of the spring pressure plate in the slot cavity acts as an air spring, providing effective space for the connector to extend and retract within a small range and to tilt within the base plate cavity.

[0011] Preferably, a mounting groove is formed on the inner side wall of the base plate, and a sealing ring gasket is fitted inside the mounting groove. A sealing ring body is also fitted inside the inner wall of the base plate and is located below the sealing ring gasket. The sealing of the insertion part between the connector handle and the base plate is ensured by the top connecting spring plate, the sealing ring gasket and the small pressure rod. This prevents foreign objects from entering the inner side of the base plate and effectively blocks the intrusion of moisture, allowing the connector handle to move smoothly up and down inside the base plate.

[0012] Preferably, the bottom of the sealing ring pad is equipped with small pressure rods in a circular array, and the side of the base plate near the connector handle is provided with a rounded part, which provides a movable structural basis for the connector handle to move obliquely inside the base plate. A ball joint is installed at the end of the small pressure rod near the connector handle, and a small compression spring is installed on the outer surface of the ball joint and is fitted onto the small pressure rod. The small pressure rod is spring-loaded to the sealing ring pad through the small compression spring.

[0013] Preferably, a steel ring is wrapped around the middle of the outer surface of the sealing ring pad to enhance the friction resistance of the sealing ring pad inside the mounting groove. Hemispherical covers are installed in a circular array on the top side of the connector handle, and a folded tube is connected between every two hemispherical covers. The small pressure rod is hinged to the connector handle through a ball joint and a hemispherical cover. The ball joint at the end of the small pressure rod can deflect at any angle inside the hemispherical cover. The connector handle is sealed and pressed with the base plate through a sealing ring body and a top connecting spring plate, which can further offset the impact and shaking from the ground, and achieve a dual damping and shock absorption effect against the impact force of the ground.

[0014] Preferably, the top of the top body is symmetrically connected with hanging ears, a top head is installed at the middle position of the top of the top body, and an inner insertion rod is connected at the middle position of the bottom of the top body, which penetrates the top body and is inserted into the inner cavity of the hydraulic rod. The top of the hydraulic rod is threaded to the bottom of the top body. The top of the top body can be assembled onto the motor vehicle through the hanging ears.

[0015] Preferably, three rubber ring gaskets are fitted into the inner wall of the top of the hydraulic rod. A rigid plug is fixedly connected to the end of the inner rod away from the top body. Push plug blocks are installed at equal intervals on the outer surface of the rigid plug. A rubber cover is fixedly connected to the middle of the end of the rigid plug away from the top body, which effectively prevents accidental leakage of air pressure between the hydraulic rod and the inner cavity of the damping cylinder.

[0016] This invention provides a damping adjustable shock absorber for motor vehicles, which has the following advantages:

[0017] 1. The adjustable damping shock absorber for this motor vehicle utilizes the ball joint between the hemispherical cover and the ball joint head. Under the guidance of the small pressure rod and the small pressure spring, the connector can make a small range of slight tilting and bouncing within the inner cavity of the base plate. This assists the large spring in counteracting and damping vibrations from the ground, thus reducing the impact of external forces from the ground and achieving the secondary damping and shock absorption function of the bottom connector against external forces from the ground.

[0018] Second, the adjustable damping shock absorber used in this motor vehicle can further transmit external forces through the connecting head. Combined with the cooperation of the folding tube and the small compression spring, it can disperse and cancel the external forces on the inner side of the chassis in the vertical and curved directions, so that the vibration energy of the motor vehicle is converted into elastic potential energy, thereby further offsetting the impact and shaking from the ground, and achieving a dual damping and shock absorption effect on the impact force of the ground.

[0019] Third, the vehicle uses a damping adjustable shock absorber. The inner rod extends downward into the inner cavity of the hydraulic rod. As the pressure regulating hole located between the hard seal plug and the partition plug continuously pressurizes the local space, the air pressure in the inner cavity of the hydraulic rod increases. This, in turn, pushes the rubber cover plug. Under the action of air pressure, the annular bottom edge of the rubber cover plug can automatically flip upward, thereby automatically increasing the contact area between the rubber cover plug and the inner wall of the hydraulic rod. This automatically achieves the air pressure balance braking effect of the inner rod in the inner cavity of the hydraulic rod, assisting the large spring in providing secondary damping and shock absorption against the external force on the top of the overhead body. This helps the vehicle to further weaken and brake the swaying from the vehicle body, making the vehicle body more stable.

[0020] IV. The adjustable damping shock absorber for this motor vehicle controls the balance of air pressure between the hard seal plug and the diaphragm by controlling the depth of the inner rod inserted into the hydraulic rod. When the internal air pressure increases, the diaphragm moves closer to the movable plug, shortening the hydraulic stroke of the movable plug; when the internal air pressure decreases, the diaphragm moves further away from the movable plug, increasing the hydraulic stroke of the movable plug. When the internal air pressure is constant, the distance between the diaphragm and the movable plug remains relatively stationary, and the hydraulic stroke of the movable plug remains unchanged. Thus, the shock absorber has the function of adjusting the damping strength of the damping cylinder.

[0021] V. The adjustable damping shock absorber for this motor vehicle utilizes a hydraulic damping structure between the diaphragm and the movable plug within the damping cylinder. When the vehicle's frame and axle vibrate relative to each other, the movable plug moves up and down within the damping cylinder, causing the oil within the damping cylinder to flow back and forth through the orifices on the movable plug. The friction between the orifice wall and the oil, as well as the internal friction between oil molecules, creates a damping force on the moving movable plug, converting the vehicle's vibration energy into oil heat energy. This heat energy is then dissipated into the atmosphere through the outer surface of the damping cylinder and the threaded protrusions, achieving the damping and shock absorption effect of the vehicle's vibration energy. Simultaneously, combined with the top connector and hydraulic rod, the pneumatic damping, achieved through the pressure adjustment hole between the hard seal plug and the diaphragm, not only reduces vehicle body vibration but also effectively combines the dual shock absorption effects of pneumatic and hydraulic damping. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the external structure of an adjustable damping shock absorber for motor vehicles according to the present invention.

[0023] Figure 2 This is a schematic diagram of the structure of the damping cylinder and the threaded protrusion of the present invention;

[0024] Figure 3 This is a schematic diagram of the internal structure of the damping cylinder of the present invention;

[0025] Figure 4 This is a schematic diagram of the disassembled structure of the bottom connector of the present invention;

[0026] Figure 5 This is a schematic diagram of the assembly structure of the connecting head and the base plate of the present invention;

[0027] Figure 6 This is a schematic diagram of the structure of the hemispherical cover and folded tube of the present invention;

[0028] Figure 7 This is a schematic diagram of the sealing ring structure of the present invention;

[0029] Figure 8 This is a schematic diagram of the assembly structure of the inner insert rod and the hydraulic rod of the present invention;

[0030] Figure 9 This is a partial sectional view of the assembly of the inner insertion rod and the hydraulic rod of the present invention.

[0031] In the diagram: 1. Damping cylinder; 2. Bottom connector; 21. Base plate; 22. Connecting head handle; 23. Top spring plate; 24. Convex top platform; 25. Slot; 26. Sealing ring gasket; 27. Small pressure rod; 28. Sealing ring body; 29. ​​Rounded part; 210. Ball joint head; 211. Small compression spring; 212. Steel ring; 213. Hemispherical cover; 214. Folded tube; 215. Ring groove; 3. Top connector; 31. Top body; 32. Hanging lug; 33. Top head; 34. Inner rod; 35. Rubber ring gasket; 36. Push plug block; 37. Rigid plug plate; 38. Rubber cover plug; 4. Large spring; 5. Hydraulic rod; 6. Threaded protrusion; 7. Double rubber plug gasket; 8. Hard sealing plug; 9. Pressure adjusting hole; 10. Isolator; 11. Movable plug; 12. Tension spring; 13. Orifice. Implementation

[0032] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical application of the invention, and to enable those skilled in the art to understand the invention and design various embodiments with various modifications suitable for a particular purpose.

[0033] First embodiment, such as Figures 1 to 9 As shown, the present invention provides a technical solution: a damping adjustable shock absorber for motor vehicles, including a damping cylinder 1, a hydraulic rod 5 installed at the top center of the damping cylinder 1, and a threaded protrusion 6 installed in a spiral shape on the outer surface of the damping cylinder 1 to expand the effective contact area between the damping cylinder 1 and the air, so as to facilitate rapid heat dissipation and cooling inside the damping cylinder 1. A double rubber plug 7 is installed on the top inner side of the damping cylinder 1.

[0034] It also includes a bottom connector 2, which is installed at the bottom of the damping cylinder 1. The bottom connector 2 includes a base plate 21 installed at the bottom of the damping cylinder 1.

[0035] The top connector 3 is installed on the top of the hydraulic rod 5. A large spring 4 is installed between the damping cylinder 1 and the top connector 3 and is fitted on the outer surface of the damping cylinder 1. The top connector 3 is spring-loaded to the bottom connector 2 by the large spring 4. The top connector 3 includes a top body 31 installed on the top of the hydraulic rod 5.

[0036] A hard sealing plug 8 is fitted to the bottom of the double rubber plug 7 and is fitted together with the double rubber plug 7 inside the damping cylinder 1. A diaphragm 10 is installed at the bottom of the hard sealing plug 8, which can move up and down inside the damping cylinder 1. A pressure regulating hole 9 is opened in the middle of the outer surface of the hydraulic rod 5 to control the pressure between the diaphragm 10 and the hard sealing plug 8.

[0037] Two movable plugs 11 are installed on the inner side of the damping cylinder 1. They are located at the bottom of the control diaphragm 10 and are fixedly mounted on the outer surface of the hydraulic rod 5. A tension spring 12 is fixedly connected between the two movable plugs 11, so that the two movable plugs 11 can bounce up and down. A hole 13 is opened on the bottom side of the movable plug 11, so that the oil molecules between the control diaphragm 10 and the movable plug 11 can flow through the hole 13 to the oil molecules between the movable plug 11 and the bottom of the inner cavity of the damping cylinder 1.

[0038] In use, the hydraulic damping structure between the diaphragm 10 and the movable plug 11 in the inner cavity of the damping cylinder 1 can drive the movable plug 11 in the damping cylinder 1 to move up and down when the vehicle frame and axle vibrate relative to each other. This causes the oil in the damping cylinder 1 cavity to flow back and forth to the other side of the movable plug 11 through the orifice 13 on the movable plug 11. At this time, the friction between the orifice wall and the oil, as well as the internal friction between the oil molecules, forms a damping force on the movable plug 11 that moves up and down, so that the vibration energy of the vehicle is converted into the heat energy of the oil, and then dissipated into the atmosphere through the outer surface of the damping cylinder 1 and the threaded protrusion 6, thus achieving the damping and shock absorption effect of the vibration energy of the vehicle. At the same time, combined with the top connector 3 and the hydraulic rod 5, the pneumatic damping formed by the travel between the hard sealing plug 8 and the diaphragm 10 through the pressure regulating hole 9 can not only reduce the vibration of the vehicle body, but also effectively combine the dual shock absorption effects of pneumatic shock absorption and hydraulic shock absorption.

[0039] Furthermore, by controlling the depth of the inner insertion rod 34 inside the hydraulic rod 5, the balance of air pressure between the hard sealing plug 8 and the partition 10 can be controlled. When the internal air pressure increases, the partition 10 moves closer to the movable plug 11, shortening the hydraulic stroke of the movable plug 11. When the internal air pressure decreases, the partition 10 moves away from the movable plug 11, expanding the hydraulic stroke of the movable plug 11. When the internal air pressure is constant, the distance between the partition 10 and the movable plug 11 remains relatively stationary, and the hydraulic stroke of the movable plug 11 remains unchanged. Thus, the shock absorber has the function of adjusting the damping strength of the damping cylinder 1.

[0040] The second embodiment is based on the first embodiment; please refer to [link / reference]. Figures 1 to 7As shown, a connecting head handle 22 is installed at the bottom center of the base plate 21, and a convex top platform 24 is installed at the top center of the base plate 21. A slot 25 is opened at the top center of the convex top platform 24. A top connecting spring plate 23 is fitted into the inner side of the slot 25, and the top side is fixedly connected to the inner wall of the slot 25. A spring pressure plate is connected at the bottom center. The tight fit of the spring pressure plate in the inner cavity of the slot 25 acts as an air spring, which can provide effective activity space for the connecting head handle 22 to extend and deflect within a small range in the inner cavity of the base plate 21.

[0041] A ring groove 215 is provided on the inner side wall of the base plate 21. A sealing ring gasket 26 is fitted inside the ring groove 215. A sealing ring body 28 is also fitted inside the inner wall of the base plate 21 and is located below the sealing ring gasket 26. The top connecting spring plate 23, the sealing ring gasket 26, and the small pressure rod 27 work together to ensure the sealing of the insertion part between the connector handle 22 and the base plate 21, preventing foreign objects from entering the inside of the base plate 21 while effectively blocking the intrusion of moisture, so that the connector handle 22 can smoothly move inside the base plate 21. The bottom of the sealing ring pad 26 is arranged in a circular array with small pressure rods 27 inserted. The side of the base plate 21 near the connector handle 22 is provided with a rounded part 29, which provides a movable structural basis for the connector handle 22 to move obliquely inside the base plate 21. A ball joint head 210 is installed at the end of the small pressure rod 27 near the connector handle 22. A small compression spring 211 is installed on the outer surface of the ball joint head 210 and is fitted on the small pressure rod 27. The small pressure rod 27 is spring-loaded to the sealing ring pad 26 through the small compression spring 211.

[0042] A steel ring 212 is wrapped around the middle of the outer surface of the sealing ring gasket 26 to enhance the friction resistance of the sealing ring gasket 26 inside the mounting groove 215. A hemispherical cover 213 is installed in a circular array on the top side of the connector handle 22, and a folded tube 214 is connected between every two hemispherical covers 213. The small pressure rod 27 is hinged to the connector handle 22 through the ball joint head 210 and the hemispherical cover 213. The ball joint head 210 at the end of the small pressure rod 27 can be tilted at any angle inside the hemispherical cover 213. The connector handle 22 is sealed and pressed into the base plate 21 through the sealing ring body 28 and the top connecting spring plate 23.

[0043] In use, by evacuating the inner cavity of the base plate 21 into a vacuum, the connector 22 can be fitted into the bottom of the base plate 21 without falling off.

[0044] The bottom of the bottom connector 2 can be mounted on the motor vehicle by means of the connector handle 22, and then the connector handle 22 is pressed against the spring pressure plate at the bottom of the top spring plate 23 in the inner cavity of the base plate 21, so that the connector handle 22 can bounce and extend within a small range in the inner cavity of the base plate 21.

[0045] Therefore, by utilizing the ball joint between the hemispherical cover 213 and the ball joint head 210, and with the spring-guided cooperation of the small pressure rod 27 and the small pressure spring 211, the connector handle 22 can make a small range of slight tilting spring-like movement in the inner cavity of the base plate 21, which can assist the large spring 4 in jointly offsetting and damping the vibration from the ground, and playing a damping and weakening effect on the external force from the ground, thus realizing the secondary damping and shock absorption function of the bottom connector 2 against the external force from the ground;

[0046] Furthermore, by utilizing the connecting head 22 to transmit external forces, and in conjunction with the folding tube 214 and the small compression spring 211, the inner side of the base plate 21 can disperse and cancel out external forces in the vertical and curved directions, thereby converting the vibration energy of the motor vehicle into elastic potential energy. This further cancels out the impact and shaking from the ground, achieving a dual damping and shock absorption effect against ground impact forces.

[0047] The third embodiment is based on embodiments one and two; please refer to [link / reference]. Figure 8 and Figure 9 As shown, the top of the top body 31 is symmetrically connected with a hanging ear 32, a top head 33 is installed at the middle position of the top of the top body 31, and an inner insertion rod 34 is connected at the middle position of the bottom of the top body 31, which passes through the top body 31 and is inserted into the inner cavity of the hydraulic rod 5. The top of the hydraulic rod 5 is threaded to the bottom of the top body 31. The top of the top body 31 can be assembled onto the motor vehicle through the hanging ear 32. Three rubber ring gaskets 35 are fitted into the inner wall of the top of the hydraulic rod 5. A rigid plug 37 is fixedly connected to the end of the inner insertion rod 34 away from the top body 31. Push plug blocks 36 are installed at equal intervals on the outer surface of the rigid plug 37, and a rubber cover plug 38 is fixedly connected to the middle of the end of the rigid plug 37 away from the top body 31.

[0048] In use, the inner rod 34 extends downward into the inner cavity of the hydraulic rod 5. As the pressure regulating hole 9, located between the hard sealing plug 8 and the partition plug 10, continuously pressurizes the local space, the air pressure in the inner cavity of the hydraulic rod 5 increases. This, in turn, pushes the rubber cover plug 38. Under the action of air pressure, the annular bottom edge of the rubber cover plug 38 automatically flips upward, thereby automatically increasing the contact area between the rubber cover plug 38 and the inner wall of the hydraulic rod 5. This automatically achieves the air pressure balance braking effect of the inner rod 34 in the inner cavity of the hydraulic rod 5, assisting the large spring 4 in providing secondary damping and shock absorption against the external force on the top of the top body 31. This helps the motor vehicle to further weaken and brake the swaying from the vehicle body, making the vehicle body more stable.

[0049] Furthermore, when the inner rod 34 returns in the inner cavity of the hydraulic rod 5, under the reverse action of the force and the friction between the rubber cover 38 and the inner wall of the hydraulic rod 5, the rubber cover 38 can be flipped back to its initial state, so as to provide a secondary damping effect to the vehicle body.

[0050] By tightly fitting the pusher block 36 and the rigid plug disc 37 with the inner cavity of the hydraulic rod 5, the accidental leakage of air pressure between the hydraulic rod 5 and the inner cavity of the damping cylinder 1 is effectively prevented. Only when the pressure regulating hole 9 moves upward with the hydraulic rod 5, disengages from the inner cavity of the damping cylinder 1, and is exposed on the outside, will the air pressure between the hydraulic rod 5 and the pressure regulating hole 9 be released.

[0051] Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described and explained in the present invention, unless otherwise specified or limited, shall be implemented according to conventional means in the art.

Claims

1. A damping adjustable shock absorber for motor vehicles, comprising a damping cylinder (1), characterized in that: A hydraulic rod (5) is installed at the top center of the damping cylinder (1), and a threaded protrusion (6) is installed on the outer surface of the damping cylinder (1) in a spiral shape. A double rubber plug (7) is installed on the top inner side of the damping cylinder (1). It also includes a bottom connector (2) which is installed at the bottom of the damping cylinder (1), the bottom connector (2) including a base plate (21) installed at the bottom of the damping cylinder (1). Top connector (3) is installed on the top of the hydraulic rod (5). A large spring (4) is installed between the damping cylinder (1) and the top connector (3) and is fitted on the outer surface of the damping cylinder (1). The top connector (3) is spring-loaded to the bottom connector (2) by the large spring (4). The top connector (3) includes a top body (31) installed on the top of the hydraulic rod (5). The bottom of the double rubber plug (7) is fitted with a hard sealing plug (8), and together with the double rubber plug (7), it is fitted into the inner side of the damping cylinder (1). The bottom of the hard sealing plug (8) is fitted with a partition (10), which can move up and down inside the damping cylinder (1). The hydraulic rod (5) has a pressure regulating hole (9) in the middle of its outer surface. The damping cylinder (1) has two movable plugs (11) installed inside its inner side, which are located at the bottom of the control partition (10) and fixedly fitted on the outer surface of the hydraulic rod (5). A tension spring (12) is fixedly connected between the two movable plugs (11). The bottom side of the movable plug (11) has a hole (13). The top of the top body (31) is symmetrically connected with a hanging ear (32). A top head (33) is installed at the middle position of the top of the top body (31). An inner insertion rod (34) is connected at the middle position of the bottom of the top body (31), and it passes through the top body (31) and is inserted into the inner cavity of the hydraulic rod (5). The top of the hydraulic rod (5) is threaded to the bottom of the top body (31). Three rubber ring gaskets (35) are fitted into the inner wall of the top of the hydraulic rod (5). A rigid plug disc (37) is fixedly connected to the end of the inner insertion rod (34) away from the top body (31). Push plug blocks (36) are installed at equal intervals on the outer surface of the rigid plug disc (37). A rubber cover plug (38) is fixedly connected to the middle of the end of the rigid plug disc (37) away from the top body (31).

2. The damping adjustable shock absorber for motor vehicles according to claim 1, characterized in that: A connecting head handle (22) is installed at the bottom center of the base plate (21), and a convex top platform (24) is installed at the top center of the base plate (21). A slot (25) is opened at the top center of the convex top platform (24).

3. A damping adjustable shock absorber for motor vehicles according to claim 2, characterized in that: The inner side of the slot (25) is fitted with a top spring plate (23), and the top side is fixedly connected to the inner wall of the slot (25), and a spring pressure plate is connected to the middle of the bottom.

4. A damping adjustable shock absorber for motor vehicles according to claim 3, characterized in that: The inner sidewall of the base plate (21) is provided with a ring groove (215), and a sealing ring pad (26) is fitted inside the ring groove (215). A sealing ring body (28) is also fitted inside the inner wall of the base plate (21) and is located below the sealing ring pad (26).

5. A damping adjustable shock absorber for motor vehicles according to claim 4, characterized in that: The bottom of the sealing ring pad (26) is arranged in a circular array with small pressure rods (27). The bottom plate (21) has a rounded part (29) on one side near the connector handle (22). A ball joint head (210) is installed on one end of the small pressure rod (27) near the connector handle (22). A small compression spring (211) is installed on the outer surface of the ball joint head (210) and is fitted on the small pressure rod (27). The small pressure rod (27) is spring-loaded to the sealing ring pad (26) through the small compression spring (211).

6. A damping adjustable shock absorber for motor vehicles according to claim 5, characterized in that: The outer surface of the sealing ring gasket (26) is wrapped with a steel ring (212). The top side of the connector handle (22) is equipped with a hemispherical cover (213) in a circular array, and a folded tube (214) is connected between every two hemispherical covers (213). The small pressure rod (27) is hinged to the connector handle (22) through the ball joint (210) and the hemispherical cover (213). The connector handle (22) is sealed and pressed with the base plate (21) through the sealing ring body (28) and the top connecting spring plate (23).

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