Adjustable shock absorber of automobile

Abstract

The utility model relates to the technical field of shock absorbers, in particular to an adjustable shock absorber of an automobile. Comprising a piston cylinder assembly, a pressing assembly, an oil inlet pipe assembly and an oil return pipe assembly. The piston cylinder assembly comprises an outer barrel and an inner barrel arranged on the inner side of the outer barrel. The outer cylinder is connected with a second connecting lug plate; the pressing assembly comprises a first piston, a piston column, a first spring and a protective outer cylinder; the protective outer cylinder is connected with a first connecting lug plate; the oil inlet pipe assembly comprises an output pipe and a first piston cylinder. The oil return pipe assembly comprises an oil return pipe and a second piston cylinder. According to the technical scheme, by adjusting the communication area of the output pipe and the oil return pipe, the damping strength of the first piston during vertical operation can be controlled, and the shock absorber can be suitable for being used in different automobile driving modes.

Description

Technical Field

[0001] This utility model relates to the field of shock absorber technology, and in particular to an adjustable shock absorber for automobiles. Background Technology

[0002] Automotive shock absorbers are used to suppress the oscillations caused by the rebound of the spring after absorbing shocks 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 smoothness of the car. When driving over uneven roads, although the shock-absorbing spring can filter out the vibrations from the road surface, the spring itself will still have reciprocating motion. The shock absorber is used to suppress this spring bounce.

[0003] The patent with authorization publication number CN218992206U discloses an automotive shock absorber. During the shock absorption process, when there is a tendency for the shock absorber to be compressed to its limit, the patent automatically increases the damping effect inside the shock absorber through a protective component, reducing the probability of the piston contacting the bottom of the shock absorber when the shock absorber is compressed to its limit, and further improving the service life of the automotive shock absorber.

[0004] However, the above-mentioned patents have certain limitations in actual use: the damping of the piston cannot be adjusted, the shock absorption requirements of a car vary in different road conditions, and the inability to adjust the damping makes the shock absorber unable to meet the diverse needs of different driving conditions. Utility Model Content

[0005] The purpose of this invention is to address the problems existing in the background technology by proposing an adjustable shock absorber for automobiles.

[0006] The technical solution of this utility model is an adjustable shock absorber for automobiles, comprising:

[0007] A piston cylinder assembly includes an outer cylinder and an inner cylinder located inside the outer cylinder. A helium storage cavity is formed between the outer cylinder and the inner cylinder. The upper end of the helium storage cavity is filled with helium, and the lower end of the helium storage cavity is filled with hydraulic oil. A hydraulic oil storage cavity is formed inside the inner cylinder and is filled with hydraulic oil. A second connecting lug is connected to the outer cylinder.

[0008] The pressing assembly includes a first piston, a piston rod, a first spring, and a protective outer cylinder. The first piston is movably disposed inside the hydraulic oil storage chamber. The piston rod movably passes through the inner and outer sides of the hydraulic oil storage chamber and is connected to the first piston. The first spring is sleeved on the outer side of the piston rod. The protective outer cylinder has a detachable connection structure with the outer end of the piston rod. A first connecting lug is connected to the protective outer cylinder.

[0009] The system includes an inlet pipe assembly and a return pipe assembly. The inlet pipe assembly includes an outlet pipe and a first piston cylinder. The return pipe assembly includes a return pipe and a second piston cylinder. Both the outlet pipe and the return pipe are connected to the hydraulic oil storage chamber. Both the first piston cylinder and the second piston cylinder extend through the inner and outer sides of the outer cylinder. The first piston cylinder and the second piston cylinder are respectively connected to the outlet pipe and the return pipe. A second piston is slidably mounted on the inner side of both the first piston cylinder and the second piston cylinder. A one-way valve is installed on both the outlet pipe and the return pipe. An air inlet connection pipe is connected to both the first piston cylinder and the second piston cylinder. A distance measuring sensor is installed on both the first piston cylinder and the second piston cylinder.

[0010] Preferably, the upper end of the inner wall of the protective outer cylinder is connected to a threaded column, the piston column is provided with a circular groove, and the upper part of the inner wall of the circular groove is provided with a thread that matches the threaded column; the threaded column is equipped with a limit mechanism.

[0011] Preferably, the limiting mechanism includes a limiting post, an elastic connecting assembly, a pressure rod, a pressure plate, and a wedge block. The limiting post is movably located below the threaded post, and the limiting post and the threaded post are connected by the elastic connecting assembly. A limiting groove is provided on one side of the bottom of the circular groove for the end of the limiting post to be inserted. A through hole is provided on the limiting post, and the wedge block is located above the through hole. The pressure rod movably passes through the threaded post and the upper part of the protective outer cylinder and is connected to the wedge block. A through hole is provided on the first connecting ear plate, and the pressure plate is slidably located inside the through hole and connected to the pressure rod.

[0012] Preferably, the elastic connection assembly includes a first guide rod and a second spring. Two mounting plates are arranged side by side at the bottom end of the threaded column. The first guide rod is connected between the two mounting plates. A connecting slider is fixed on the limiting column. The connecting slider is slidably mounted on the first guide rod. The second spring is sleeved and mounted on the first guide rod.

[0013] Preferably, the one-way valve inside the output pipe only allows the hydraulic oil in the hydraulic oil storage chamber to flow unidirectionally to the helium storage chamber; the one-way valve inside the return pipe only allows the oil in the helium storage chamber to flow back to the hydraulic oil storage chamber.

[0014] Preferably, the outer cylinder, inner cylinder, piston column, protective outer cylinder, first connecting lug, and second connecting lug are all made of high-strength materials.

[0015] Compared with the prior art, the present invention has the following beneficial technical effects: In this technical solution, by adjusting the connection area between the output pipe and the return oil pipe, the damping strength of the first piston during its up and down movement can be controlled, so that the shock absorber can be used in different car driving modes, thus improving its applicability. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model.

[0017] Figure 2 This is a cross-sectional structural diagram of the present invention.

[0018] Figure 3 This is a schematic diagram of the connection relationship between the threaded post and the limiting post in this utility model.

[0019] Figure 4 This is a cross-sectional view of the second piston cylinder in this utility model.

[0020] Reference numerals: 1. Outer cylinder; 101. Helium storage chamber; 2. Inner cylinder; 201. Hydraulic oil storage chamber; 31. Output pipe; 32. Return oil pipe; 4. First piston; 5. Piston column; 501. Circular groove; 6. First spring; 7. Protective outer cylinder; 81. First connecting lug; 811. Through hole; 82. Second connecting lug; 801. Mounting hole; 91. First piston cylinder; 92. Second piston cylinder; 11. Threaded column; 12. Pressure rod; 13. Pressure plate; 14. Limiting column; 141. Through hole; 15. First guide rod; 16. Mounting plate; 17. Second spring; 18. Wedge block; 19. Second piston; 24. Inlet connecting pipe; 25. Distance sensor. Detailed Implementation

[0021] Example 1

[0022] like Figures 1-3 As shown in the figure, this embodiment proposes an adjustable shock absorber for automobiles, including a piston cylinder assembly, a pressure assembly, an oil inlet pipe assembly, and an oil return pipe assembly.

[0023] The piston cylinder assembly includes an outer cylinder 1 and an inner cylinder 2 located inside the outer cylinder 1. A helium storage cavity 101 is formed between the outer cylinder 1 and the inner cylinder 2. The upper end of the helium storage cavity 101 is filled with helium, and the lower end of the helium storage cavity 101 is filled with hydraulic oil. A hydraulic oil storage cavity 201 is formed inside the inner cylinder 2 and is filled with hydraulic oil. A second connecting lug 82 is connected to the outer cylinder 1.

[0024] The pressing assembly includes a first piston 4, a piston rod 5, a first spring 6, and a protective outer cylinder 7. The first piston 4 is movably disposed inside the hydraulic oil storage chamber 201 and is provided with a sealing ring. The piston rod 5 movably passes through the inner and outer sides of the hydraulic oil storage chamber 201 and is connected to the first piston 4. The upper end of the inner cylinder 2 has a circular hole for the piston rod 5 to pass through, and multiple balls are installed inside the circular hole to reduce the friction between the inner cylinder 2 and the piston rod 5. The first spring 6 is sleeved on the outer side of the piston rod 5. The protective outer cylinder 7 has a detachable connection structure with the outer end of the piston rod 5. The protective outer cylinder 7 is located outside the first spring 6 and can effectively protect the first spring 6. A first connecting ear plate 81 is connected to the protective outer cylinder 7. Both the first connecting ear plate 81 and the second connecting ear plate 82 have mounting holes 801.

[0025] The oil inlet pipe assembly includes an outlet pipe 31 and a first piston cylinder 91, and the oil return pipe assembly includes an oil return pipe 32 and a second piston cylinder 92. Both the outlet pipe 31 and the oil return pipe 32 are connected to the hydraulic oil storage chamber 201. The first piston cylinder 91 and the second piston cylinder 92 both penetrate the inner and outer sides of the outer cylinder 1. The first piston cylinder 91 and the second piston cylinder 92 are respectively connected to the outlet pipe 31 and the oil return pipe 32. A second piston 19 is slidably disposed on the inner side of both the first piston cylinder 91 and the second piston cylinder 92. A sealing ring is provided on 19; a one-way valve is installed on both the output pipe 31 and the return pipe 32. The one-way valve inside the output pipe 31 only allows the oil in the hydraulic oil storage chamber 201 to flow unidirectionally to the helium storage chamber 101; the one-way valve inside the return pipe 32 only allows the oil in the helium storage chamber 101 to flow back to the hydraulic oil storage chamber 201; an air inlet connection pipe 24 is connected to both the first piston cylinder 91 and the second piston cylinder 92; a distance measuring sensor 25 is installed on both the first piston cylinder 91 and the second piston cylinder 92.

[0026] The outer cylinder 1, inner cylinder 2, piston column 5, protective outer cylinder 7, first connecting ear plate 81 and second connecting ear plate 82 are all made of high-strength materials.

[0027] Specifically, the implementation process of the adjustable shock absorber for automobiles is as follows: During the downward movement of the piston rod 5, the first piston 4 pushes the hydraulic oil inside the hydraulic oil storage chamber 201 through the output pipe 31 and the first piston cylinder 91 to the interior of the helium storage chamber 101. As the amount of hydraulic oil at the bottom of the helium storage chamber 101 increases, the hydraulic oil further compresses the helium at the upper end of the helium storage chamber 101, thus compressing the helium. During the compression process, the return oil pipe 32 is in a closed state. During the upward movement of the first piston 4, the output pipe 31 is in a closed state, and the hydraulic oil inside the helium storage chamber 101 flows back to the interior of the hydraulic oil storage chamber 201 through the second piston cylinder 92 and the return oil pipe 32, thereby realizing the entire shock absorption process.

[0028] In the technical solution, two intake pipes 24 are connected to two bidirectional air pumps on the vehicle. It should be noted that the bidirectional air pumps can perform both inflation and deflation functions. A flexible hose connects the bidirectional air pumps to the intake pipes 24, and a solenoid valve is installed on each hose. During operation, if the air pump inflates the first piston cylinder 91, the gas pushes the second piston 19 towards the output pipe 31. During this movement, the second piston 19 reduces the communication area between the output pipe 31 and the first piston cylinder 91, thus adjusting the damping strength of the first piston 4 during downward movement. Similarly, the damping strength of the first piston 4 during upward movement can be adjusted in a similar manner. This allows the shock absorber to be suitable for different driving modes (such as driving on flat roads and driving on bumpy roads), improving its applicability.

[0029] It should be added that the distance sensor 25 is used to measure the distance between itself and the corresponding second piston 19, thereby enabling precise control of the movement position of the second piston 19. After the adjustment work is completed, the two solenoid valves should be closed to prevent gas from overflowing. In this technical solution, the controller realizes the control and signal connection of the bidirectional air pump, solenoid valves, and distance sensor 25. The controller is installed in the vehicle body and can be a microprocessor controller or a PLC controller.

[0030] Example 2

[0031] like Figures 1-3 As shown, this embodiment proposes an adjustable shock absorber for automobiles. Compared to Embodiment 1, in this embodiment, the upper end of the inner wall of the protective outer cylinder 7 is connected to a threaded column 11. A circular groove is opened on the piston column 5, and the upper part of the inner wall of the circular groove is provided with a thread adapted to the threaded column 11. A limiting mechanism is installed on the threaded column 11. The limiting mechanism includes a limiting column 14, an elastic connecting assembly, a pressure rod 12, a pressure plate 13, and a wedge block 18. The limiting column 14 is movably disposed below the threaded column 11. The limiting column 14 and the threaded column 11 are connected by an elastic connecting assembly. The elastic connecting assembly includes a first guide rod 15 and a second spring 17. The bottom ends of the threaded column 11 are arranged side by side. There are two mounting plates 16, and a first guide rod 15 is connected between the two mounting plates 16. A connecting slider is fixed on the limiting post 14 and is slidably mounted on the first guide rod 15. A second spring 17 is sleeved and mounted on the first guide rod 15. A limiting groove is provided on one side of the bottom end of the circular groove 501 for the end of the limiting post 14 to be inserted. A through hole 141 is opened on the limiting post 14. A wedge block 18 is located above the through hole 141. A pressure rod 12 movably passes through the threaded post 11 and the upper part of the protective outer cylinder 7 and is connected to the wedge block 18. A through hole 811 is opened on the first connecting ear plate 81. A pressure plate 13 is slidably mounted inside the through hole 811 and is connected to the pressure rod 12.

[0032] In this embodiment, because the first spring 6 is repeatedly compressed, it becomes a vulnerable component. When replacing the first spring 6, firstly, the pressure rod 12 is pressed down to move the wedge block 18 downward. The bottom end of the wedge block 18 is inserted into the through hole 141. As the wedge block 18 continues to move, the end of the limiting post 14 is moved out of the limiting groove, thereby releasing the limiting connection between the piston post 5 and the threaded post 11. Then, an iron rod or wooden rod is inserted into the mounting hole 801 and the first connecting ear plate 81 is rotated. By increasing the lever arm, the threaded post 11 is slowly moved out of the circular groove 501. This reduces the difficulty of operation and prevents the first spring 6 from rebounding quickly, improving safety during the replacement process. After the new first spring 6 is fitted onto the outside of the piston column 5, the piston column 5 is driven to rotate in the opposite direction so that it is screwed into the inside of the circular groove 501. Before this, the pressure rod 12 needs to be pressed down to move the limiting post 14 completely to the position directly below the threaded post 11, so that the limiting post 14 can be easily inserted into the inside of the circular groove 501. Then the pressure rod 12 is released. When the threaded post 11 rotates to the limited position, the end of the limiting post 14 is driven to be stuck into the limiting groove under the elastic force of the second spring 17.

[0033] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. An adjustable shock absorber for automobiles, characterized in that, include: A piston cylinder assembly includes an outer cylinder (1) and an inner cylinder (2) located inside the outer cylinder (1). A helium storage chamber (101) is formed between the outer cylinder (1) and the inner cylinder (2). The upper end of the helium storage chamber (101) is filled with helium, and the lower end of the helium storage chamber (101) is filled with hydraulic oil. A hydraulic oil storage chamber (201) is formed inside the inner cylinder (2), and the hydraulic oil storage chamber (201) is filled with hydraulic oil. A second connecting lug (82) is connected to the outer cylinder (1). The pressing assembly includes a first piston (4), a piston rod (5), a first spring (6), and a protective outer cylinder (7). The first piston (4) is movably disposed inside the hydraulic oil storage chamber (201). The piston rod (5) movably passes through the inner and outer sides of the hydraulic oil storage chamber (201) and is connected to the first piston (4). The first spring (6) is sleeved on the outer side of the piston rod (5). The protective outer cylinder (7) has a detachable connection structure with the outer end of the piston rod (5). A first connecting lug (81) is connected to the protective outer cylinder (7). The oil inlet pipe assembly and the oil return pipe assembly are provided. The oil inlet pipe assembly includes an output pipe (31) and a first piston cylinder (91). The oil return pipe assembly includes a return pipe (32) and a second piston cylinder (92). Both the output pipe (31) and the return pipe (32) are connected to the hydraulic oil storage chamber (201). Both the first piston cylinder (91) and the second piston cylinder (92) penetrate the inner and outer sides of the outer cylinder (1). The first piston cylinder (91) and the second piston cylinder (92) are connected to the output pipe (31) and the return pipe (32) respectively. A second piston (19) is slidably arranged on the inner side of both the first piston cylinder (91) and the second piston cylinder (92). A one-way valve is installed on both the output pipe (31) and the return pipe (32). An air inlet connection pipe (24) is connected to both the first piston cylinder (91) and the second piston cylinder (92). A distance measuring sensor (25) is installed on both the first piston cylinder (91) and the second piston cylinder (92).

2. The adjustable shock absorber for automobiles according to claim 1, characterized in that, The upper end of the inner wall of the protective outer cylinder (7) is connected to a threaded column (11), and a circular groove is provided on the piston column (5). The upper part of the inner wall of the circular groove is provided with a thread that matches the threaded column (11); the threaded column (11) is equipped with a limit mechanism.

3. An adjustable shock absorber for automobiles according to claim 2, characterized in that, The limiting mechanism includes a limiting post (14), an elastic connecting assembly, a pressure rod (12), a pressure plate (13), and a wedge block (18). The limiting post (14) is movably located below the threaded post (11). The limiting post (14) and the threaded post (11) are connected by the elastic connecting assembly. A limiting groove for the end of the limiting post (14) to be inserted is provided on one side of the bottom of the circular groove (501). A through hole (141) is provided on the limiting post (14). The wedge block (18) is located above the through hole (141). The pressure rod (12) movably passes through the threaded post (11) and the upper part of the protective outer cylinder (7) and is connected to the wedge block (18). A through hole (811) is provided on the first connecting ear plate (81). The pressure plate (13) is slidably located inside the through hole (811) and is connected to the pressure rod (12).

4. An adjustable shock absorber for automobiles according to claim 3, characterized in that, The elastic connection assembly includes a first guide rod (15) and a second spring (17). Two mounting plates (16) are arranged side by side at the bottom end of the threaded post (11). The first guide rod (15) is connected between the two mounting plates (16). A connecting slider is fixed on the limiting post (14). The connecting slider is slidably arranged on the first guide rod (15). The second spring (17) is sleeved and installed on the first guide rod (15).

5. An adjustable shock absorber for automobiles according to claim 1, characterized in that, The one-way valve inside the output pipe (31) only allows the hydraulic oil in the hydraulic oil storage chamber (201) to flow unidirectionally to the helium storage chamber (101); the one-way valve inside the return pipe (32) only allows the oil inside the helium storage chamber (101) to flow back to the hydraulic oil storage chamber (201).

6. An adjustable shock absorber for automobiles according to claim 1, characterized in that, The outer cylinder (1), inner cylinder (2), piston column (5), protective outer cylinder (7), first connecting ear plate (81) and second connecting ear plate (82) are all made of high-strength materials.

Images