Electromagnetic valve adjusting double-cylinder type shock absorber

Abstract

The utility model provides an electromagnetic valve adjusting double-cylinder type shock absorber, relates to the technical field of shock absorbers, and solves the technical problems that an existing shock absorber is complicated in adjusting mode and cannot be adjusted in real time. The device comprises an oil cylinder, a gas tank, a first electromagnetic one-way valve and a second electromagnetic one-way valve, an upper cavity of a piston in the oil cylinder is communicated with an upper cavity of the gas tank through the first electromagnetic one-way valve, and a lower cavity of the piston in the oil cylinder is communicated with a transition cavity. The transition cavity is communicated with the upper cavity of the gas tank through the second electromagnetic one-way valve, the flowing direction of the first electromagnetic one-way valve is opposite to that of the second electromagnetic one-way valve, the piston upper cavity and the piston lower cavity are both filled with oil, and the lower cavity of the gas tank is filled with gas. The damping strength of the shock absorber is electrically controlled, the operation mode is simplified, complicated manual adjustment is not needed any more, and meanwhile real-time adjustment can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of shock absorbers, in particular to a solenoid valve regulated double-tube shock absorber. Background Art

[0002] Traditional shock absorbers are mostly designed with a single-tube oil circuit structure, and the oil volume is adjusted by a knob to adjust the restoring damping and compression damping. The traditional method requires manual adjustment of the gear position, which requires people to get off the vehicle and manually turn the knobs at the shock absorbers installed on multiple wheels to adjust the gear position. This adjustment method is not only complicated but also cannot be adjusted manually in real time. Utility Model Content

[0003] The purpose of the utility model is to provide a solenoid valve regulated double-tube shock absorber, which solves the technical problem that the existing shock absorber adjustment method is complicated and cannot be adjusted in real time. The preferred technical solution among the many technical solutions provided by the utility model can produce many technical effects as described below.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] The utility model provides an electromagnetic valve-regulated double-tube shock absorber, comprising an oil cylinder, an air tank, a first electromagnetic one-way valve and a second electromagnetic one-way valve. The upper cavity of the piston in the oil cylinder is connected to the upper cavity of the air tank through the first electromagnetic one-way valve, the lower cavity of the piston in the oil cylinder is connected to a transition cavity, and the transition cavity is connected to the upper cavity of the air tank through the second electromagnetic one-way valve. The flow directions of the first electromagnetic one-way valve and the second electromagnetic one-way valve are opposite, the upper cavity of the piston and the lower cavity of the piston are both filled with oil, and the lower cavity of the air tank is filled with gas.

[0006] Preferably, the oil cylinder includes an inner cylinder and an outer cylinder sleeved on the inner cylinder, the piston is movably arranged in the inner cylinder, the gap between the inner cylinder and the outer cylinder is the transition cavity, and the bottom of the transition cavity is connected with the piston lower cavity through a through hole on the bottom wall of the inner cylinder.

[0007] Preferably, it further comprises a first end cover, a second end cover and a piston rod, wherein the first end cover is arranged at one end of the inner tube and the outer tube, the second end cover is arranged at the other end of the inner tube and the outer tube, and one end of the piston rod extends into the oil cylinder through the second end cover to be connected with the piston.

[0008] Preferably, it also includes an upper connecting flange, an adjusting nut and a spring, the other end of the piston rod is connected to the upper connecting flange, the adjusting nut is arranged outside the outer cylinder, the spring is arranged between the adjusting nut and the upper connecting flange, and the spring is in a compressed state.

[0009] Preferably, the first end cover is provided with an oil cylinder connecting tube for connecting the oil cylinder, an air tank connecting tube for connecting the air tank, and a valve body connecting tube for connecting the first electromagnetic one-way valve and the second electromagnetic one-way valve, and an air passage is provided in the first end cover, and the air passage sequentially connects the oil cylinder connecting tube, the air tank connecting tube and the valve body connecting tube.

[0010] Preferably, the oil cylinder connecting tube and the gas tank connecting tube are arranged in the same direction of the first end cover, and the valve body connecting tube is located above the gas tank connecting tube and the number is two.

[0011] Preferably, a lifting ear is provided on one end of the first end cover away from the outer cylinder.

[0012] Preferably, a lower oil passage and an upper oil passage are provided in the piston, and a bottom port of the lower oil passage and a top port of the upper oil passage are both provided with a one-way valve sheet.

[0013] This application adopts the above technical solution, which has at least the following beneficial effects:

[0014] The upper cavity of the piston in the oil cylinder is connected to the upper cavity of the gas tank through the first electromagnetic one-way valve, and the lower cavity of the piston in the oil cylinder is connected to a transition cavity, and the transition cavity is connected to the upper cavity of the gas tank through the second electromagnetic one-way valve. The flow directions of the first electromagnetic one-way valve and the second electromagnetic one-way valve are opposite, and the upper cavity of the piston and the lower cavity of the piston are both filled with oil, and the lower cavity of the gas tank is filled with gas. In this way, the upper cavity of the piston, the upper cavity of the gas tank, and the transition cavity can form a connecting loop, and electrical control can be achieved through the first electromagnetic one-way valve and the second electromagnetic one-way valve, so that the damping strength of the shock absorber can be electrically controlled, the operation method is simplified, and complicated manual adjustment is no longer required, and real-time adjustment can be achieved.

[0015] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 This is a structural diagram of a solenoid valve-regulated double-tube shock absorber provided in an embodiment of the utility model;

[0018] Figure 2It is a schematic diagram of the top view of the structure of the electromagnetic valve regulated double-tube shock absorber provided in an embodiment of the utility model;

[0019] Figure 3 yes Figure 2 Schematic diagram of the AA section structure;

[0020] Figure 4 yes Figure 2 Schematic diagram of the BB cross-section structure;

[0021] Figure 5 This is a schematic diagram of the first end cover structure provided by an embodiment of the utility model;

[0022] Figure 6 It is a schematic diagram of the piston structure provided by an embodiment of the utility model;

[0023] Figure 7 It is a schematic diagram of the cross-sectional structure of a piston provided in an embodiment of the utility model.

[0024] In the figure, 1, oil cylinder; 2, gas tank; 3, first electromagnetic one-way valve; 4, second electromagnetic one-way valve; 5, piston upper cavity; 6, upper cavity; 7, piston lower cavity; 8, transition cavity; 9, lower cavity; 10, inner tube; 11, outer tube; 12, first end cover; 13, second end cover; 14, piston rod; 15, piston; 16, upper connecting flange; 17, adjusting nut; 18, spring; 19, oil cylinder connecting tube; 20, gas tank connecting tube; 21, valve body connecting tube; 22, lifting ear; 23, lower oil channel; 24, upper oil channel; 25, one-way valve plate. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the utility model.

[0026] The specific embodiment of the utility model provides a solenoid valve regulated double-tube shock absorber, combined with the attached Figure 1 -Attached Figure 4As shown, it mainly includes an oil cylinder 1, an air tank 2, a first electromagnetic one-way valve 3 and a second electromagnetic one-way valve 4. The interior of the oil cylinder 1 is divided into an upper piston cavity 5 and a lower piston cavity 7 by a piston 15 therein, and the upper piston cavity 5 is connected with the upper cavity 6 of the air tank 2 through the first electromagnetic one-way valve 3. The first electromagnetic one-way valve 3 is used to control the oil flow rate. The lower piston cavity 7 in the oil cylinder 1 is connected with a transition cavity 8, and the transition cavity 8 is connected with the upper cavity 6 of the air tank 2 through the second electromagnetic one-way valve 4. The second electromagnetic one-way valve 4 also plays a role in controlling the oil flow rate. The flow directions of the first electromagnetic one-way valve 3 and the second electromagnetic one-way valve 4 are opposite. The upper piston cavity 5 and the lower piston cavity 7 are both filled with oil. The lower chamber 9 of the gas tank 2 is filled with gas. When the oil cylinder 1 is compressed, the oil in the upper chamber 5 of the piston or the lower chamber 7 of the piston will enter the upper chamber 6, thereby squeezing the gas in the lower chamber 9 of the gas tank 2. At the same time, the oil entering the upper chamber 6 can also enter the lower chamber 7 of the piston or the upper chamber 5 of the piston, thus forming an oil circuit. In this way, it plays a role of hydraulic shock absorption. In this application, the electrical control of the first solenoid check valve 3 and the second solenoid check valve 4 is adopted to realize the control in the vehicle. Real-time adjustment can be made during driving without getting off the vehicle, thereby having a better driving experience and avoiding the complicated operation caused by manual adjustment and the problem of being unable to adjust in real time.

[0027] In the specific implementation of the present application, the oil cylinder 1 includes an inner cylinder 10 and an outer cylinder 11 sleeved in the inner cylinder 10. A double-cylinder method is adopted to form a transition cavity 8 in the gap between the inner cylinder 10 and the outer cylinder 11. The piston 15 is movably arranged in the inner cylinder 10. The bottom of the transition cavity 8 is connected with the piston lower cavity 7 through the through hole on the bottom wall of the inner cylinder 10, so that the oil can flow between the transition cavity 8 and the piston lower cavity 7.

[0028] The solenoid valve regulated double-tube shock absorber in the present application also includes a first end cover 12, a second end cover 13 and a piston rod 14. The first end cover 12 is arranged at one end of the inner tube 10 and the outer tube 11, and the second end cover 13 is arranged at the other end of the inner tube 10 and the outer tube 11. In the present application, the first end cover 12 is arranged at the top end, and the second end cover 13 is arranged at the bottom end. The second end cover 13 is provided with a perforation. One end of the piston rod 14 extends into the cylinder 1 through the second end cover 13 and is connected to the piston 15. The first end cover 12 and the piston rod 14 are respectively connected to the two movable parts of the vehicle body. A lifting ear 22 is provided on the end of the first end cover 12 away from the outer tube 11 for easy connection with the vehicle body.

[0029] The present application also includes an upper connecting flange 16, an adjusting nut 17 and a spring 18. The end of the piston rod 14 away from the oil cylinder 1 is connected to the upper connecting flange 16. The upper connecting flange 16 is used to connect to the vehicle body. The adjusting nut 17 is arranged on the outside of the outer tube 11. A spring 18 is arranged between the adjusting nut 17 and the upper connecting flange 16. The spring 18 is in a compressed state. In this way, the spring 18 is arranged to play a certain shock-absorbing role.

[0030] In the present application, the first end cover 12 is provided with a cylinder connection tube 19, a gas tank connection tube 20 and a valve body connection tube 21, and an air passage is provided inside the first end cover 12, which sequentially connects the cylinder connection tube 19, the gas tank connection tube 20 and the valve body connection tube 21, the cylinder 1 is connected to the cylinder connection tube 19, the gas tank 2 is connected to the gas tank connection tube 20, and the first electromagnetic one-way valve 3 and the second electromagnetic one-way valve 4 are connected to the valve body connection tube 21. The piston upper cavity 5, the piston lower cavity 7 and the upper cavity 6 are connected through the air passage.

[0031] The oil cylinder connection tube 19 and the gas tank connection tube 20 are arranged in the same direction of the first end cover 12, and the valve body connection tube 21 is located above the gas tank connection tube 20 and the number is two. In this way, the gas tank 2 is arranged on one side of the oil cylinder, and the first electromagnetic one-way valve 3 and the second electromagnetic one-way valve 4 are arranged on the top of the gas tank 2.

[0032] In the specific embodiment of the present application, a lower oil passage 23 and an upper oil passage 24 are provided in the piston 15. Figure 6 and attached Figure 7 The bottom port of the lower oil passage 23 and the top port of the upper oil passage 24 are both provided with a one-way valve plate 25, so that the one-way flow of the lower oil passage 23 and the upper oil passage 24 is limited by the one-way valve plate 25. The one-way valve plate 25 can be an elastic plate, such as a rubber plate.

[0033] Combined with the above-mentioned solenoid valve regulating double-tube shock absorber structure description, this application describes its principle as follows:

[0034] When the piston rod 14 moves upward, part of the oil flows downward through the piston 15 in the oil cylinder 1, and the oil enters the piston lower cavity 7 from the piston upper cavity 5. At the same time, another part of the oil in the piston upper cavity 5 will be compressed by the piston 15 and pass through the first electromagnetic one-way valve 3, the upper cavity 6, the second electromagnetic one-way valve 4, the transition cavity 8 in sequence, and enter the piston lower cavity 7 through the through hole at the bottom of the inner tube 10.

[0035] When the piston rod 14 moves downward, a part of the oil flows upward through the piston 15 in the cylinder 1, and the oil enters the upper cavity 5 of the piston from the lower cavity 7 of the piston. At the same time, another part of the oil in the lower cavity 7 of the piston will be compressed by the piston 15 and enter the upper cavity 5 of the piston through the transition cavity 8, the second solenoid one-way valve 4, the upper cavity 6, and the first solenoid one-way valve 3 in sequence.

[0036] In the present application, the compression damping is controlled by controlling the flow rate through the first electromagnetic one-way valve 3 and the second electromagnetic one-way valve 4 .

[0037] In the present utility model, the terms "one embodiment", "some embodiments", "examples", "specific examples", "some examples", etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0038] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A solenoid valve regulated double-tube shock absorber, characterized in that: It comprises an oil cylinder, a gas tank, a first electromagnetic one-way valve and a second electromagnetic one-way valve, the upper cavity of the piston in the oil cylinder is connected with the upper cavity of the gas tank through the first electromagnetic one-way valve, the lower cavity of the piston in the oil cylinder is connected with a transition cavity, the transition cavity is connected with the upper cavity of the gas tank through the second electromagnetic one-way valve, the flow directions of the first electromagnetic one-way valve and the second electromagnetic one-way valve are opposite, the upper cavity of the piston and the lower cavity of the piston are both filled with oil, and the lower cavity of the gas tank is filled with gas; The oil cylinder includes an inner cylinder and an outer cylinder sleeved on the inner cylinder, the piston is movably arranged in the inner cylinder, the gap between the inner cylinder and the outer cylinder is the transition cavity, and the bottom of the transition cavity is connected with the piston lower cavity through a through hole on the bottom wall of the inner cylinder.

2. The solenoid valve regulated double-tube shock absorber according to claim 1, characterized in that: It also includes a first end cover, a second end cover and a piston rod. The first end cover is arranged at one end of the inner tube and the outer tube, and the second end cover is arranged at the other end of the inner tube and the outer tube. One end of the piston rod extends into the oil cylinder through the second end cover and is connected to the piston.

3. The solenoid valve regulated double-tube shock absorber according to claim 2, characterized in that: It also includes an upper connecting flange, an adjusting nut and a spring. The other end of the piston rod is connected to the upper connecting flange. The adjusting nut is arranged outside the outer cylinder. The spring is arranged between the adjusting nut and the upper connecting flange, and the spring is in a compressed state.

4. The solenoid valve regulated double-tube shock absorber according to claim 2, characterized in that: The first end cover is provided with an oil cylinder connecting tube for connecting the oil cylinder, an air tank connecting tube for connecting the air tank, and a valve body connecting tube for connecting the first electromagnetic one-way valve and the second electromagnetic one-way valve. An air passage is provided in the first end cover, and the air passage sequentially connects the oil cylinder connecting tube, the air tank connecting tube and the valve body connecting tube.

5. The solenoid valve regulated double-tube shock absorber according to claim 4, characterized in that: The oil cylinder connecting tube and the gas tank connecting tube are arranged in the same direction of the first end cover, and the valve body connecting tubes are located above the gas tank connecting tubes and are two in number.

6. The solenoid valve regulated double-tube shock absorber according to claim 2, characterized in that: A lifting ear is arranged on one end of the first end cover away from the outer cylinder.

7. The solenoid valve regulated double-tube shock absorber according to claim 1, characterized in that: A lower oil passage and an upper oil passage are arranged in the piston, and a bottom port of the lower oil passage and a top port of the upper oil passage are both provided with a one-way valve sheet.

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