Damping-adjustable shock absorber

Abstract

The utility model discloses a damper with adjustable damping, which comprises a working cylinder with a piston cavity, a piston rod in sliding connection with the working cylinder and a spring arranged between the piston rod and the working cylinder, the working cylinder is further provided with a connector, the connector is provided with a first damping cavity communicated with the piston cavity, and the first damping cavity is provided with a second damping cavity communicated with the piston cavity. A plurality of first damping holes with different calibers are further formed in the side wall of the first damping cavity, and the connector is further provided with a damping adjusting assembly used for being connected with one of the first damping holes. By rotating the damping adjusting assembly, the first damping holes with different hole diameters and the damping adjusting assembly are selected, and by adjusting the hole diameters of the first damping holes, the flow speed of oil liquid is adjusted, so that the damping force is adjusted.

Description

Technical Field

[0001] This application relates to the field of shock absorbers, and particularly to a shock absorber with adjustable damping. Background Art

[0002] A shock absorber, also known as a shock or vibration damper, is a device used to reduce or suppress the transmission of mechanical vibrations. The interior of the shock absorber has a working cylinder filled with hydraulic oil and a piston that moves relative to the working cylinder. The piston is provided with small holes or throttle valves through which the oil needs to pass when the piston moves. This flow generates a damping force that can absorb and consume the vibration energy caused by uneven road surfaces, thereby achieving the shock absorption effect.

[0003] When a vehicle travels on a long bumpy road, the oil damping will decrease as the temperature rises. This will greatly affect the damping force of the shock absorber, reducing its ability to absorb the spring vibrations significantly.

[0004] However, traditional shock absorbers cannot reasonably adjust the damping according to the specific road conditions and cannot adjust the rebound force of the telescopic rod on the shock absorber. Therefore, the existing shock absorbers have limitations and deficiencies during use, and the shock absorption and buffering performance cannot be maximized. Utility Model Content

[0005] The purpose of this utility model is to overcome the above-mentioned deficiencies of the prior art and provide a shock absorber with adjustable damping.

[0006] To achieve the above purpose, this application adopts the following technical solutions:

[0007] A shock absorber with adjustable damping includes a working cylinder with a piston chamber, a piston rod slidably connected to the working cylinder, and a spring disposed between the piston rod and the working cylinder. The working cylinder is further provided with a connector. The connector is provided with a first damping chamber communicating with the piston chamber. The side wall of the first damping chamber is further provided with a plurality of first damping holes with different diameters. The connector is further provided with a damping adjustment assembly connected to one of the first damping holes.

[0008] Preferably, the damping adjustment assembly includes a rotating ring rotatably connected to the connector, a damping block fixed to the rotating ring, a second damping chamber opened in the damping block, a second damping hole communicating with one of the first damping holes, and a damping plate slidably disposed in the second damping chamber.

[0009] Preferably, the damping plate divides the second damping chamber into an oil pressure chamber and a gas pressure chamber, and the oil pressure chamber communicates with the second damping hole.

[0010] Preferably, a damping elastic member is disposed in the gas pressure chamber.

[0011] Preferably, the connector is further provided with a pressure regulating component, which includes a pressure regulating cavity and a pressure regulating block slidably disposed in the pressure regulating cavity. One end of the pressure regulating block is located in the piston cavity. A valve port is further provided on the inner wall of the pressure regulating cavity, and a valve unit is disposed in the valve port.

[0012] Preferably, the valve unit includes a first limiting ring and a second limiting ring fixed to the valve port. A valve ball is disposed between the first limiting ring and the second limiting ring. The second limiting ring is fixed with a limiting elastic member, and one end of the limiting elastic member is fixedly connected to the valve ball.

[0013] Preferably, the working rod is threadedly connected with an adjusting knob, and one end of the spring is connected to the piston rod, and the other end of the spring abuts against the adjusting knob.

[0014] In summary, the present utility model includes the following beneficial technical effects:

[0015] 1. When it is necessary to adjust the damping, the damping adjusting component can be rotated to select different first damping holes with different apertures to be docked with the second damping holes, and the damping force can be adjusted by adjusting the aperture of the first damping hole.

[0016] 2. The gas is filled into the pressure regulating cavity through the valve port to increase the air pressure in the pressure regulating cavity. At this time, one end of the pressure regulating block will further move into the piston cavity. Since the preset air pressure in the pressure regulating cavity becomes larger, when the oil pressure requires a greater pressure to push the pressure regulating block into the pressure regulating cavity, the damping force can be adjusted accordingly. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of the overall structure of the present utility model.

[0018] Figure 2 is a partially enlarged view of the present utility model.

[0019] Figure 3 is a schematic cross-sectional structure diagram of the present utility model.

[0020] Figure 4 is the present utility model Figure 2 The enlarged structure diagram at A.

[0021] Figure 5 is the present utility model Figure 2 The enlarged structure diagram at B.

[0022] Figure 6 is a schematic diagram of the structure of the damping adjusting component in the present utility model.

[0023] Description of reference numerals: 1. Working cylinder; 11. Piston chamber; 12. Piston rod; 13. Adjusting knob; 2. Connector; 21. First damping chamber; 22. First damping hole; 3. Damping adjustment assembly; 31. Rotating ring; 32. Damping block; 33. Second damping chamber; 34. Second damping hole; 35. Damping plate; 36. Oil pressure chamber; 37. Air pressure chamber; 38. Damping elastic member; 4. Pressure adjustment assembly; 41. Pressure adjustment chamber; 42. Pressure adjustment block; 43. Valve port; 44. Valve unit; 441. First limiting ring; 442. Second limiting ring; 443. Valve ball; 444. Limiting elastic member. Detailed implementation manners

[0024] In this specification, the orientation terms such as up, down, left, right, front, back, front side, back side, top, bottom, etc. mentioned or possibly mentioned are defined with respect to the structures shown in the respective drawings. They are relative concepts, and thus may change accordingly depending on their different positions and usage states. Therefore, these or other orientation terms should not be construed as restrictive terms. In addition, the terms "first", "second", "third", etc. or similar expressions are only used for descriptive and differentiating purposes, and cannot be understood as indicating or implying the relative importance of the corresponding components.

[0025] The following is a further detailed description of this application in combination with the Figure 1 - attached Figure 6 drawings.

[0026] An embodiment of this application discloses a shock absorber with adjustable damping.

[0027] A shock absorber with adjustable damping includes a working cylinder 1, a piston rod 12 and a spring. The working cylinder 1 has a piston chamber 11. One end of the piston rod 12 is located in the piston chamber 11, and the piston rod 12 can slide up and down relative to the working cylinder 1. The working cylinder 1 is also rotatably provided with an adjusting knob 13. The spring is sleeved between the working cylinder 1 and the piston rod 12. One end of the spring is fixedly connected to the piston rod 12, and the other end of the spring abuts against the adjusting knob 13. By rotating the adjusting knob 13, the initial length of the spring can be adjusted, thereby changing the damping magnitude.

[0028] A connector 2 is also provided at the top of the working cylinder 1. The connector 2 is provided with a pressure regulating assembly 4. The pressure regulating assembly 4 includes a pressure regulating chamber 41, a pressure regulating block 42 and a valve port 43. The pressure regulating chamber 41 is opened in the connector 2. The valve is located at the top of the connector 2 and the valve communicates with the pressure regulating chamber 41. The pressure regulating chamber 41 is slidably provided with a pressure regulating block 42. One end of the pressure regulating block 42 extends out of the pressure regulating chamber 41 and enters the piston chamber 11. The piston chamber 11 is filled with oil. Through the valve port 43, air pressure can be filled into the pressure regulating chamber 41 so that there is gas in the pressure regulating chamber 41. When the piston rod 12 moves in the piston chamber 11, the oil can press the pressure regulating block 42 to move, so that the gas in the pressure regulating chamber 41 is compressed. In this way, the oil pressure is adjusted, and thus the damping of the shock absorber can be adjusted.

[0029] The valve port 43 is also provided with a valve unit 44. The valve unit 44 can limit the gas in the pressure regulating chamber 41 from coming out of the valve.

[0030] The valve unit 44 includes a first limit ring 441, a valve ball 443 located below the first limit ring 441 and a second limit ring 442 located below the valve ball 443. The first limit ring 441 and the second limit ring 442 are fixed to the inner wall of the valve port 43. The valve ball 443 can move between the first limit ring 441 and the second limit ring 442. The second limit ring 442 is also fixedly provided with a limit elastic member 444. The limit elastic member 444 is a spring. One end of the limit elastic member 444 is fixedly connected to the valve ball 443. The limit elastic member 444 can push the valve ball 443 to move towards the first limit ring 441 to block the opening of the first limit ring 441.

[0031] The connector 2 is provided with a damping regulating assembly 3. The damping regulating assembly 3 includes a rotating ring 31 and a damping block 32. The rotating ring 31 is rotatably provided on the outer ring of the connector 2. The damping block 32 is fixedly connected to the rotating ring 31. As the rotating ring 31 rotates, the damping block 32 can rotate around the connector 2.

[0032] The connector 2 is provided with a first damping chamber 21. The first damping chamber 21 communicates with the piston chamber 11. The side wall of the first damping chamber 21 also has a plurality of first damping holes 22 with different diameters. The damping block 32 has a second damping chamber 33 and a second damping hole 34. As the rotating ring 31 rotates, the second damping hole 34 can be docked with one of the first damping holes 22, and the remaining first damping holes 22 will be blocked by the side wall of the damping block 32.

[0033] A damping plate 35 is slidably arranged in the second damping chamber 33. The damping plate 35 divides the second damping chamber 33 into an oil pressure chamber 36 and a gas pressure chamber 37. The oil pressure chamber 36 is communicated with the second damping hole 34. The oil in the piston chamber 11 will enter the oil pressure chamber 36 through the first damping chamber 21, the first damping hole 22 and the second damping hole 34. The flow rate of the oil is restricted by the aperture size of the first damping hole 22, so as to realize the adjustment of the damping force of the shock absorber.

[0034] The damping hole and the damping plate 35 slidably arranged in the second damping chamber 33. The damping plate 35 divides the second damping chamber 33 into an oil pressure chamber 36 and a gas pressure chamber 37. The oil pressure chamber 36 is communicated with the second damping hole 34. A damping elastic member 38 is arranged in the gas pressure chamber 37. The damping elastic member 38 is a spring. The gas pressure chamber 37 is filled with gas. When the oil enters the oil chamber, the gas will be compressed, and the gas pressure can buffer the oil during the process of increasing the gas pressure. The damping elastic member 38 has a tendency to push the damping plate 35 towards the second damping hole 34, so as to increase the thrust of the oil pressure to push the damping plate 35, and the damping force of the shock absorber can be improved.

[0035] The implementation principle of the embodiment is as follows: 1. When it is necessary to adjust the damping, the damping adjustment assembly 3 can be rotated to select different apertures of the first damping hole 22 to be docked with the second damping hole 34, and the damping force can be adjusted by adjusting the aperture of the first damping hole 22. 2. The gas is filled into the pressure adjustment chamber 41 through the valve port 43 to increase the gas pressure in the pressure adjustment chamber 41. At this time, one end of the pressure adjustment block 42 will further move into the piston chamber 11. Since the preset gas pressure in the pressure adjustment chamber 41 becomes larger, when the oil pressure needs a greater pressure to push the pressure adjustment block 42 into the pressure adjustment chamber 41, the damping force can be adjusted in this way.

[0036] The above are all the preferred embodiments of the present application, and do not limit the protection scope of the present application; therefore, according to the technical solution of the present invention, without changing the essence of the present invention, those of ordinary skill in the art can propose various structural ways and implementation ways that can be mutually replaced. Therefore, the above specific implementation manners and the drawings are only exemplary descriptions of the technical solution of the present invention, and should not be regarded as all of the present invention or as a limitation or restriction on the technical solution of the present invention. Therefore: all equivalent changes made according to the structure, shape and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A shock absorber with adjustable damping, comprising a working cylinder (1) having a piston chamber (11), a piston rod (12) slidably connected to the working cylinder (1), and a spring provided between the piston rod (12) and the working cylinder (1), characterized in that: The working cylinder (1) is further provided with a connector (2). The connector (2) is provided with a first damping chamber (21) communicating with the piston chamber (11). The side wall of the first damping chamber (21) is further provided with a plurality of first damping holes (22) with different diameters. The connector (2) is further provided with a damping adjustment assembly (3) connected to one of the first damping holes (22).

2. A shock absorber with adjustable damping according to claim 1, characterized in that: The damping adjustment assembly (3) includes a rotating ring (31) rotatably connected to the connector (2), a damping block (32) fixed to the rotating ring (31), a second damping chamber (33) formed in the damping block (32), a second damping hole (34) communicating with one of the first damping holes (22), and a damping plate (35) slidably disposed in the second damping chamber (33).

3. A shock absorber with adjustable damping according to claim 2, characterized in that: The damping plate (35) divides the second damping chamber (33) into an oil pressure chamber (36) and a gas pressure chamber (37). The oil pressure chamber (36) communicates with the second damping hole (34).

4. A shock absorber with adjustable damping according to claim 3, characterized in that: A damping elastic member (38) is disposed in the gas pressure chamber (37).

5. A shock absorber with adjustable damping according to claim 1, characterized in that: The connector (2) is further provided with a pressure adjustment assembly (4). The pressure adjustment assembly (4) includes a pressure adjustment chamber (41) and a pressure adjustment block (42) slidably disposed in the pressure adjustment chamber (41). One end of the pressure adjustment block (42) is located in the piston chamber (11). The inner wall of the pressure adjustment chamber (41) is further provided with a valve port (43), and a valve unit (44) is disposed in the valve port (43).

6. The shock absorber with adjustable damping according to claim 5, characterized in that: The valve unit (44) includes a first limiting ring (441) and a second limiting ring (442) fixed to the valve port (43). A valve ball (443) is disposed between the first limiting ring (441) and the second limiting ring (442). The second limiting ring (442) is fixed with a limiting elastic member (444), and one end of the limiting elastic member (444) is fixedly connected to the valve ball (443).

7. A shock absorber with adjustable damping according to claim 1, characterized in that: The working rod is threadedly connected with an adjusting knob (13). One end of the spring is connected to the piston rod (12), and the other end of the spring abuts against the adjusting knob (13).

Images