Double-air-chamber automobile shock absorber

Abstract

The utility model relates to the technical field of shock absorbers, and discloses a double-air-chamber automobile shock absorber which comprises a base, the top of the base is rotationally connected with a second installation base, a first spring is installed on the top of the second installation base, and a first installation base is installed on the top of the first spring. A piston rod is fixedly connected to the bottom of the middle of the first mounting seat, a first piston is fixedly mounted at the end, away from the first mounting seat, of the piston rod, a second piston is fixedly mounted at the end, away from the first mounting seat, of the piston rod, and one-way valves are mounted at the top and the bottom of the second piston. According to the double-air-chamber automobile shock absorber, three relatively-sealed spaces are formed in the shock absorber through the first piston and the third piston, the top and the bottom are the air chambers, the middle is the oil storage cavity, and gaskets are installed on the inner sides and the outer sides of the first piston, the second piston and the third piston, so that better sealing performance can be improved; the double air chambers can keep better stability when the vehicle runs, and shaking of the vehicle body is effectively reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of shock absorber, concretely to a double air chamber automobile shock absorber. BACKGROUND

[0002] The shock absorber is an important component of the automobile suspension system, mainly used for controlling the relative movement between the wheel and the vehicle body, and its basic function is to absorb the impact and vibration caused by the uneven road surface, maintain the contact between the wheel and the ground, and improve the handling performance, riding comfort and safety of the vehicle.

[0003] The structure of the traditional double air chamber shock absorber can increase the overall weight of the shock absorber, thereby affecting the fuel efficiency and performance of the vehicle, and the structure of the traditional double air chamber shock absorber has many sealing points, and the oil and gas are easily mixed, resulting in failure of the shock absorber structure. UTILITY MODEL CONTENT

[0004] (I) Technical problem solved

[0005] In view of the deficiencies of the prior art, the utility model provides a double air chamber automobile shock absorber to solve the problems in the above background art.

[0006] (II) Technical scheme

[0007] To achieve the above purpose, the utility model provides the following technical scheme: a double air chamber automobile shock absorber, comprising a base, the top of the base is rotatably connected with a second mounting seat, the top of the second mounting seat is provided with a first spring, the top of the first spring is provided with a first mounting seat, the top of the first mounting seat is rotatably connected with the bottom of a fixed seat, the middle bottom of the first mounting seat is fixedly connected with a piston rod, one end of the piston rod away from the first mounting seat is fixedly provided with a first piston, the first piston is slidably connected with the inner side of a cylinder, the top of the cylinder is fixedly connected with a sealing cover, the bottom of the cylinder is threadedly connected with a limiting ring, one end of the piston rod away from the first mounting seat is fixedly provided with a second piston, the top and bottom of the second piston are provided with a check valve, and the check valve is slidably connected with a guide rod.

[0008] Preferably, the first piston is provided with a gasket on the inner and outer sides, and the cross section of the gasket is square.

[0009] Preferably, a limiting rod is installed at the bottom of the inner side of the cylinder, and a third piston is slidably connected with the outer side of the limiting rod.

[0010] Preferably, the check valve has two, the two check valves are located on the two sides of the guide rod, and the installation directions of the two check valves are opposite.

[0011] Preferably, the top of the guide rod is provided with a mounting block, the inside of the mounting block is provided with a second spring, the top of the second spring is connected with a first cover plate, and the top of the mounting block is recessed to the top surface of the first cover plate.

[0012] Preferably, the bottom of the guide rod is provided with a second cover plate, and the bottom of the second cover plate is sleeved with a third spring.

[0013] Compared with the prior art, the double-gas-chamber automobile shock absorber has the following beneficial effects: the double-gas-chamber automobile shock absorber is provided with two damping structures rotatably installed between the base and the fixed seat, so that the stability of the shock absorber can be improved, especially during the driving of the vehicle, the lateral force and the longitudinal force can be better coped with, so that the controllability and stability of the vehicle are improved, the inside of the shock absorber is formed with three relatively sealed spaces through the first piston and the third piston, the top and the bottom are gas chambers, and the middle is an oil storage cavity; the inner and outer sides of the first piston, the second piston and the third piston are provided with gaskets, the gaskets are square, the sealing performance can be improved, the double gas chambers can keep better stability during the driving of the vehicle, the shaking of the vehicle body is effectively reduced, the second piston is provided with a one-way valve at the top and the bottom, the oil liquid on one side can enter the other side when the second piston moves up and down, the oil liquid flow can be optimized, the one-way valve helps to reduce the wear of the internal elements of the shock absorber, and the service life of the shock absorber is prolonged. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a three-dimensional structure schematic view of the utility model;

[0015] Figure 2 It is a cylinder cross section structure schematic view of the utility model;

[0016] Figure 3 It is a first piston structure schematic view of the utility model;

[0017] Figure 4 It is a one-way valve structure schematic view of the utility model.

[0018] In the drawing: 1, base; 2, first spring; 3, fixed seat; 4, first mounting seat; 5, second mounting seat; 6, limiting ring; 7, cylinder; 8, piston rod; 9, sealing cover; 10, first piston; 11, second piston; 12, third piston; 13, limiting rod; 14, gasket; 15, one-way valve; 16, first cover plate; 17, mounting block; 18, second spring; 19, second cover plate; 20, third spring; 21, guide rod. DETAILED DESCRIPTION

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] like Figures 1-4 As shown, this utility model provides a technical solution: a dual-chamber automotive shock absorber, including a base 1, a second mounting seat 5 rotatably connected to the top of the base 1, a first spring 2 mounted on the top of the second mounting seat 5, a first mounting seat 4 mounted on the top of the first spring 2, the top of the first mounting seat 4 rotatably connected to the bottom of a fixed seat 3, a piston rod 8 fixedly connected to the middle bottom of the first mounting seat 4, a first piston 10 fixedly mounted at the end of the piston rod 8 away from the first mounting seat 4, the first piston 10 slidably connected to the inner side of a cylinder 7, a sealing cap 9 fixedly connected to the top of the cylinder 7, a limit ring 6 threadedly connected to the bottom of the cylinder 7, a second piston 11 fixedly mounted at the end of the piston rod 8 away from the first mounting seat 4, a one-way valve 15 mounted on the top and bottom of the second piston 11, and a guide rod 21 slidably connected inside the one-way valve 15.

[0021] Furthermore, washers 14 are installed on the inner and outer sides of the first piston 10, and the cross-section of the washers 14 is square.

[0022] Specifically, the gasket 14 can improve the sealing performance of the first piston 10. The square gasket 14 has a larger contact area, which can better fill the contact surface and provide a better sealing effect.

[0023] Furthermore, a limiting rod 13 is installed at the bottom of the inner side of the cylinder 7, and a third piston 12 is slidably connected to the outer side of the limiting rod 13.

[0024] Specifically, the limiting rod 13 can limit the displacement of the second piston 11 to prevent excessive movement and reduce the stability of the shock absorber.

[0025] Furthermore, there are two check valves 15, located on both sides of the guide rod 21, with the two check valves 15 installed in opposite directions.

[0026] Specifically, the two one-way valves 15, which operate in opposite directions, can adjust the flow path of the oil, ensuring smooth flow of the oil within the shock absorber and effectively absorbing impact forces.

[0027] Furthermore, a mounting block 17 is installed on the top of the guide rod 21, and a second spring 18 is installed inside the mounting block 17. The top of the second spring 18 is connected to the first cover plate 16, and the top of the mounting block 17 is recessed inward to the top surface of the first cover plate 16.

[0028] Specifically, the second spring 18 can keep the two oil storage chambers at the top and bottom of the second piston 11 relatively sealed when the shock absorber is not subjected to external force, thereby improving stability.

[0029] Further, the bottom of the guide rod 21 is provided with the second cover plate 19, and the bottom of the second cover plate 19 is sleeved with the third spring 20.

[0030] Specifically, the third spring 20 and the second cover plate 19 can discharge oil from the one-way valve 15 of one oil storage chamber to the other oil storage chamber when subjected to opposite forces, thereby optimizing oil flow, preventing the shock absorber 15 from failing, and improving service life.

[0031] Working principle: first, the top of the base 1 is rotatably connected with the second mounting seat 5, the top of the second mounting seat 5 is provided with the first spring 2, the top of the first spring 2 is fixedly provided with the first mounting seat 4, the top of the first mounting seat 4 is rotatably connected with the fixed seat 3, thereby improving the stability of the whole, secondly, the bottom of the first mounting seat 4 is fixedly provided with the piston rod 8, the bottom of the piston rod 8 is provided with the second piston 11, the upper side of the second piston 11 is provided with the first piston 10, the lower side of the second piston 11 is provided with the third piston 12, the first piston 10, the second piston 11 and the third piston 12 are located on the same axis, the inner and outer sides of the first piston 10, the second piston 11 and the third piston 12 are provided with the gasket 14, so that the cylinder body 7 is divided into three relatively independent spaces, the top and bottom are air chambers, and the middle is an oil storage chamber, finally, the top and bottom of the second piston 11 are provided with the one-way valve 15, the top of the one-way valve 15 is provided with the second spring 18 and the mounting block 17, the bottom of the one-way valve 15 is provided with the third spring 20 and the second cover plate 19, so that when the shock absorber is subjected to external force, the flow path of the oil can be adjusted, thereby improving the stability and service life of the shock absorber.

[0032] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A double-chamber automotive shock absorber comprising a base (1), characterized in that: The top of the base (1) is rotatably connected with a second mounting seat (5), the top of the second mounting seat (5) is mounted with a first spring (2), the top of the first spring (2) is mounted with a first mounting seat (4), the top of the first mounting seat (4) is rotatably connected with the bottom of a fixed seat (3), the middle bottom of the first mounting seat (4) is fixedly connected with a piston rod (8), the end, away from the first mounting seat (4), of the piston rod (8) is fixedly mounted with a first piston (10), the first piston (10) is slidably connected with the inner side of a cylinder body (7), the top of the cylinder body (7) is fixedly connected with a sealing cover (9), the bottom of the cylinder body (7) is threadedly connected with a limiting ring (6), the end, away from the first mounting seat (4), of the piston rod (8) is fixedly mounted with a second piston (11), the top and bottom of the second piston (11) are mounted with a check valve (15), the check valve (15) is slidably connected with a guide rod (21) inside.

2. A twin-chamber automotive shock absorber according to claim 1, characterized in that: The inner and outer sides of the first piston (10) are mounted with a gasket (14), the cross section of the gasket (14) is square.

3. A twin-chamber automotive shock absorber according to claim 1, characterized in that: The bottom of the inner side of the cylinder body (7) is mounted with a limiting rod (13), the outer side of the limiting rod (13) is slidably connected with a third piston (12).

4. A twin-chamber automotive shock absorber according to claim 1, characterized in that: The check valve (15) is two, the two check valves (15) are located on the two sides of the guide rod (21), and the mounting directions of the two check valves (15) are opposite.

5. A twin-chamber automotive shock absorber according to claim 1, characterized in that: The top of the guide rod (21) is mounted with a mounting block (17), the inside of the mounting block (17) is mounted with a second spring (18), the top of the second spring (18) is connected with a first cover plate (16), and the top of the mounting block (17) is recessed inwardly to the top surface of the first cover plate (16).

6. A twin-chamber automotive shock absorber according to claim 1, characterized in that: The bottom of the guide rod (21) is mounted with a second cover plate (19), and the bottom of the second cover plate (19) is sleeved with a third spring (20).

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