One-way valve for shock absorber with double external electromagnetic valves and shock absorber with double external electromagnetic valves

Abstract

The utility model discloses a one-way valve used for a double external solenoid valve shock absorber and the double external solenoid valve shock absorber, the one-way valve comprises a one-way valve outer shell, a one-way valve inner shell, a spring and a compensation valve plate, and under the action of the elastic force of the wave spring, the compensation valve plate can prevent oil from entering from a bypass hole. When the shock absorber is in a recovery stroke, oil in an upper cavity of a piston is pressed to enter a recovery middle cylinder and enters an electromagnetic valve through a through hole of a one-way valve, and at the moment, a compensation valve plate on the one-way valve is pressed by pressure in the cavity to prevent the oil from leaking; when the shock absorber is in a compression stroke, due to pressure, oil liquid of the outer barrel can eject a valve plate and a wave spring on the one-way valve open, enters the one-way valve, passes through the compression middle cylinder and flows into the upper cavity of the piston. The one-way valve is easy to assemble and high in reliability, meanwhile, tightening stress structures are arranged on the outer side of the one-way valve outer shell and the one-way valve lower through hole in the one-way valve inner shell, fastening can be achieved only through a hexagon wrench, and the sealing performance of the one-way valve is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of shock absorbers and components thereof, in particular to a one-way valve used for a double external solenoid valve shock absorber and a double external solenoid valve shock absorber adopting the one-way valve. Background Art

[0002] As an important part of the car, the shock absorber plays a key role in ensuring the safety and comfort of the car. It is installed between the car body and the road wheel. As a damping element, it can accelerate the attenuation of the vibration of the frame and body, thereby improving the driving comfort of the car. Especially when dealing with complex road conditions, the performance of the shock absorber directly affects the driving stability and ride comfort of the car.

[0003] In recent years, electronically controlled shock absorbers have received widespread attention in the industry. Various OEMs and shock absorber companies have competed to develop them. Based on the electronically controlled shock absorber with a single external solenoid valve, an electronically controlled shock absorber with a dual external solenoid valve has been derived, that is, a shock absorber has two solenoid valves, which independently control the restoring damping force and the compression damping force.

[0004] Compared with the electric shock absorber with a single external solenoid valve, the electric shock absorber with a double external solenoid valve divides the common oil circuit of the single external recovery and compression into two, one of which is from the drain hole at the upper end of the working cylinder to the recovery solenoid valve (basically the same as the single external); and the other is different from the single external shock absorber, that is, a new drain hole is added at the lower end of the working cylinder of the single external shock absorber, and a passage from the lower end drain hole to the compression solenoid valve is created by adjusting the valve system, and the two intermediate cylinders on the working cylinder are matched to make the recovery and compression oil circuits not affect each other, so as to realize independent control of the recovery and compression damping forces. However, during the compression stroke, because all the oil in the lower chamber of the piston is pressed into the compression solenoid valve, a cavity is formed at the upper end of the piston, which requires that there should be a channel between the recovery intermediate cylinder and the recovery solenoid valve to allow the oil to flow into the recovery intermediate cylinder to replenish the oil in the upper chamber of the piston. Therefore, the double external solenoid valve shock absorber needs to set a one-way valve between the recovery intermediate cylinder and the recovery solenoid valve. The one-way valve of the prior art has the following shortcomings: (1) the existing double external solenoid valve shock absorber one-way valve is mostly assembled by compression, which has poor sealing and cannot ensure no leakage; (2) the outer diameter of the existing double external solenoid valve shock absorber one-way valve is large, so that the solenoid valve seat also needs to be increased accordingly, and the space occupied on the outside will also be increased accordingly, which is not easy to arrange. Summary of the invention

[0005] The utility model provides a one-way valve for a dual external solenoid valve shock absorber, and at the same time, the utility model also provides a dual external solenoid valve shock absorber using the one-way valve. The utility model adopts a specific structure, can meet the functional requirements of the dual external solenoid valve shock absorber, and has the advantages of easy assembly, good sealing, small outer diameter, etc.

[0006] For the one-way valve, the technical solution of the utility model is as follows:

[0007] A one-way valve for a dual external solenoid valve shock absorber comprises a one-way valve housing, a one-way valve inner housing, a spring and a compensating valve plate; a tightening force structure for cooperating with a wrench is arranged on the outer side of the upper end of the one-way valve housing; a one-way valve upper through hole for oil flow is arranged at the center of the one-way valve housing, a stepped groove is arranged on the lower side of the one-way valve upper through hole, and the spring, the compensating valve plate and the one-way valve inner housing are arranged in the stepped groove in sequence from top to bottom; the upper end of the spring abuts against the top of the stepped groove, and the spring The lower end of the spring is against the compensation valve plate, thereby pressing the compensation valve plate against the top of the one-way valve inner shell; the side of the one-way valve inner shell is provided with a bypass hole that penetrates the top surface of the one-way valve inner shell; the center of the one-way valve inner shell is provided with a one-way valve lower through hole, and the center of the compensation valve plate is correspondingly provided with an oil hole to connect the one-way valve lower through hole and the one-way valve upper through hole; the upper side outer wall of the one-way valve inner shell is connected to the lower end inner wall of the one-way valve outer shell by threads; the lower end of the one-way valve lower through hole has a structure that can withstand torque.

[0008] Compared with the prior art, the one-way valve of the utility model adopts a specific structure. When the shock absorber is in the restoring stroke, the oil in the upper chamber of the piston is pressurized to enter the restoring intermediate cylinder, and enters the restoring solenoid valve through the channel in the center of the one-way valve to generate damping force. When the shock absorber is in the compression stroke, the volume of the upper chamber of the piston increases to form a negative pressure. The oil in the liquid storage cylinder will push open the compensation valve plate in the one-way valve, enter the restoring intermediate cylinder from the lower through hole of the one-way valve, and flow into the upper chamber of the piston, meeting the functional requirements of the double external solenoid valve shock absorber. In addition, the specific structure makes the one-way valve of the utility model easy to assemble and has high reliability, which is specifically manifested as follows: the outer side of the one-way valve shell and the lower through hole of the one-way valve of the one-way valve inner shell are both provided with a structure capable of bearing torque, and the one-way valve shell and the one-way valve inner shell are connected by threads. When assembling, it is only necessary to position the one-way valve inner shell on the positioning tooling, and then use a wrench to tighten the one-way valve shell relative to the one-way valve inner shell. Compared with the conventional clamping method, it is easier to assemble and has better sealing performance. In addition, the outer diameter of the one-way valve of the utility model is relatively small, so that the solenoid valve seat can be designed to be smaller, which is conducive to the miniaturization of the product design and is more convenient for layout.

[0009] Furthermore, the lower end of the lower through hole of the one-way valve is in a hexagonal structure, which is easy to process and form, and is conducive to industrial implementation.

[0010] Furthermore, the tightening force structure is an external hexagonal structure. Therefore, ordinary wrenches can be used to tighten, which is easy to implement industrially. Of course, electric wrenches can also be used to tighten. With the external hexagonal structure, wrenches can be purchased directly without special design.

[0011] Furthermore, the number of the bypass holes may be 5-20, which are evenly distributed on the outer side of the one-way valve inner shell along the circumference of the one-way valve inner shell. Still further, the number of the bypass holes may be 12, and the shape is cylindrical.

[0012] Furthermore, a second O-ring is provided between the one-way valve outer shell and the one-way valve inner shell.

[0013] Furthermore, the spring is a wave spring. After repeated compression and deformation, the wave spring will not produce obvious elastic fatigue like ordinary springs, so it has a longer service life. This means that the wave spring in the one-way valve can maintain stable performance for a longer time, reducing the frequency of maintenance and replacement. The geometric shape of the wave spring can be directly assembled to the contact surface without additional devices or adjustments. In the assembly process of the one-way valve, this can save a lot of time and cost and improve production efficiency.

[0014] For the dual external solenoid valve shock absorber, the technical solution of the utility model is as follows:

[0015] A double external solenoid valve shock absorber comprises a one-way valve, a piston assembly, a liquid storage cylinder, a working cylinder, a restoration intermediate cylinder and a compression intermediate cylinder; the restoration intermediate cylinder is provided with a restoration solenoid valve flow hole, and the one-way valve is arranged at the restoration solenoid valve flow hole; the liquid storage cylinder is provided with a restoration solenoid valve seat, and the restoration solenoid valve is arranged in the restoration solenoid valve seat, and the restoration solenoid valve is connected to the top of the one-way valve; the one-way valve is the above-mentioned one-way valve used for the double external solenoid valve shock absorber.

[0016] Compared with the prior art, the double external solenoid valve shock absorber of the utility model adopts the above-mentioned one-way valve. When the shock absorber is in the recovery stroke, the oil in the upper chamber of the piston is pressurized to enter the recovery middle cylinder, and enters the recovery solenoid valve through the channel in the center of the above-mentioned one-way valve to generate damping force; and when the shock absorber is in the compression stroke, the volume of the upper chamber of the piston increases to form negative pressure, and the oil in the liquid storage cylinder will push open the compensation valve plate in the above-mentioned one-way valve, enter the recovery middle cylinder from the lower through hole of the one-way valve, and flow into the upper chamber of the piston, meeting the functional requirements of the double external solenoid valve shock absorber. At the same time, the outer diameter of the above-mentioned one-way valve is relatively small, so that the solenoid valve seat can be designed to be smaller, which is conducive to the miniaturization design of the product and more convenient for layout.

[0017] Furthermore, a first O-ring for sealing connection is provided at the connection between the one-way valve housing and the restoring solenoid valve. The sealing performance of the sealing ring effectively prevents oil leakage and avoids direct contact between the one-way valve and the restoring solenoid valve, thereby reducing wear and protecting parts.

[0018] Furthermore, a third O-ring for sealing connection is provided at the connection between the inner housing of the one-way valve and the recovery intermediate cylinder. The sealing performance of the sealing ring effectively prevents oil leakage and avoids direct contact between the one-way valve and the recovery intermediate cylinder, thereby reducing wear and protecting parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the one-way valve in the utility model;

[0020] Figure 2 It is a schematic cross-sectional view taken along the AA direction of the one-way valve in the utility model;

[0021] Figure 3 It is a structural schematic diagram of the shock absorber in the utility model.

[0022] The markings in the attached drawings are: 1- one-way valve; 101- one-way valve housing; 1011- tightening force structure; 1012- one-way valve upper through hole; 102- one-way valve inner shell; 1021- bypass hole; 1022- one-way valve lower through hole; 103- spring; 104- compensation valve plate; 1041- oil hole; 105- second O-type sealing ring; 2- piston assembly; 3- liquid storage cylinder; 4- working cylinder; 5- recovery intermediate cylinder; 501- recovery solenoid valve flow hole; 6- compression intermediate cylinder; 7- recovery solenoid valve seat; 8- first O-type sealing ring; 9- third O-type sealing ring. DETAILED DESCRIPTION

[0023] The utility model is further described below in conjunction with the accompanying drawings and embodiments, but they are not used as the basis of the utility model.

[0024] Example (see Figure 1-3 ):

[0025] The double external solenoid valve shock absorber comprises a one-way valve 1, a piston assembly 2, a liquid storage cylinder 3, a working cylinder 4, a restoring intermediate cylinder 5, and a compression intermediate cylinder 6; the restoring intermediate cylinder 5 is provided with a restoring solenoid valve flow hole 501, and the one-way valve 1 is arranged at the restoring solenoid valve flow hole 501; the liquid storage cylinder 3 is provided with a restoring solenoid valve seat 7, and the restoring solenoid valve is provided in the restoring solenoid valve seat 7, and the restoring solenoid valve is docked with the top of the one-way valve 1.

[0026] The one-way valve comprises a one-way valve housing 101, a one-way valve inner housing 102, a spring 103, and a compensating valve disc 104; a tightening force structure 1011 for cooperating with a wrench is provided on the outer side of the upper end of the one-way valve housing 101, and the tightening force structure 1011 is an external hexagonal structure; a one-way valve upper through hole 1012 for oil flow is provided at the center of the one-way valve housing 101, and a stepped groove is provided on the lower side of the one-way valve upper through hole 1012, and the spring 103, the compensating valve disc 104, and the one-way valve inner housing 102 are arranged in the stepped groove in sequence from top to bottom; the spring 103 The upper end of the spring 103 abuts against the top of the stepped groove, and the lower end of the spring 103 abuts against the compensating valve disc 104, thereby pressing the compensating valve disc 104 against the top of the one-way valve inner shell 102; the side of the one-way valve inner shell 102 is provided with a bypass hole 1021 penetrating the top surface of the one-way valve inner shell 102, and the bypass holes 1021 are evenly distributed on the outside of the one-way valve inner shell 102 along the circumference of the one-way valve inner shell 102, the number is 12, and the shape is cylindrical; the center of the one-way valve inner shell 102 is provided with a one-way valve lower through hole 1022, and the lower end of the one-way valve lower through hole 1022 is an inner hexagonal structure. The center of the compensating valve disc 104 is correspondingly provided with an oil hole 1041 to connect the one-way valve lower through hole 1022 and the one-way valve upper through hole 1012; the upper outer wall of the one-way valve inner shell 102 is connected to the lower inner wall of the one-way valve outer shell 101 by threads. A second O-ring 105 is disposed between the one-way valve outer shell 101 and the one-way valve inner shell 102 .

[0027] The spring 103 is a wave spring. After repeated compression and deformation, the wave spring will not produce obvious elastic fatigue like ordinary springs, so it has a longer service life. This means that the wave spring in the one-way valve can maintain stable performance for a longer time, reducing the frequency of maintenance and replacement. The geometric shape of the wave spring can be directly assembled to the contact surface without additional devices or adjustments. In the assembly process of the one-way valve 1, this can save a lot of time and cost and improve production efficiency.

[0028] The connection between the one-way valve housing 101 and the restoring solenoid valve is provided with a first O-ring 8 for sealing connection. The sealing performance of the sealing ring effectively prevents oil leakage and avoids direct contact between the one-way valve 1 and the restoring solenoid valve, thereby reducing wear and protecting parts.

[0029] A third O-ring 9 for sealing connection is provided at the connection between the one-way valve inner housing 102 and the recovery intermediate cylinder 5. The sealing performance of the sealing ring effectively prevents oil leakage and avoids direct contact between the one-way valve 1 and the recovery intermediate cylinder 5, thereby reducing wear and protecting parts.

[0030] The assembly process of the one-way valve 1 is as follows: stack the wave spring 103 and the compensation valve plate 104 in the one-way valve housing in sequence, then insert the second O-ring 106 between the one-way valve housing 101 and the one-way valve inner housing 102, and screw it into the one-way valve inner housing 102. Finally, position the one-way valve inner housing 102 with a positioning tool (which can be an Allen wrench), and use a torque wrench to act on the tightening force structure 1011 on the one-way valve housing 101 to tighten it to complete the assembly.

[0031] The assembly process of the dual external solenoid valve shock absorber and the one-way valve 1 is as follows: place the first O-ring 8 into the upper end of the one-way valve housing 101 (the upper end of the one-way valve housing 101 has a groove for placing the first O-ring 8); then place the third O-ring 9 into the lower end of the one-way valve inner housing 102 (the lower end of the one-way valve inner housing 102 has a groove for placing the third O-ring 9); then place the inner housing side of the one-way valve 1 into the restoration solenoid valve seat 7 of the restoration solenoid valve, and ensure that the center of the through hole 1012 on the one-way valve is in a straight line with the center of the through hole of the restoration intermediate cylinder 5.

[0032] The above general description of the utility model involved in this application and the description of its specific implementation method should not be understood as limiting the technical solution of the utility model. Based on the disclosure of this application, those skilled in the art can add, reduce or combine the disclosed technical features in the above general description or / and the specific implementation method (including examples) without violating the constituent elements of the utility model involved, to form other technical solutions within the scope of protection of this application.

Claims

1. A one-way valve for a dual external solenoid valve shock absorber, characterized in that: The invention comprises a one-way valve housing (101), a one-way valve inner housing (102), a spring (103), and a compensating valve plate (104); the outer side of the upper end of the one-way valve housing (101) is provided with a tightening force structure (1011) for cooperating with a wrench; the center of the one-way valve housing (101) is provided with a one-way valve upper through hole (1012) for oil flow; the lower side of the one-way valve upper through hole (1012) is provided with a stepped groove; the spring (103), the compensating valve plate (104), and the one-way valve inner housing (102) are arranged in the stepped groove in sequence from top to bottom; the upper end of the spring (103) is against the top of the stepped groove, and the lower end of the spring (103) is against the compensating valve plate (10 4) are offset against each other, thereby pressing the compensation valve plate (104) onto the top of the one-way valve inner shell (102); the side of the one-way valve inner shell (102) is provided with a bypass hole (1021) penetrating the top surface of the one-way valve inner shell (102); the center of the one-way valve inner shell (102) is provided with a one-way valve lower through hole (1022), and the center of the compensation valve plate (104) is correspondingly provided with an oil hole (1041) so that the one-way valve lower through hole (1022) and the one-way valve upper through hole (1012) are connected; the upper outer wall of the one-way valve inner shell (102) is connected to the lower inner wall of the one-way valve outer shell (101) by threads; the lower end of the one-way valve lower through hole (1022) has a structure that can withstand torque.

2. The one-way valve for a dual external solenoid valve shock absorber according to claim 1, characterized in that: The lower end of the one-way valve lower through hole (1022) is in a hexagonal structure.

3. The one-way valve for dual external solenoid valve shock absorber according to claim 1, characterized in that: The tightening force-bearing structure (1011) is an external hexagonal structure.

4. The one-way valve for a dual external solenoid valve shock absorber according to claim 1, characterized in that: The number of the bypass holes (1021) is 5-20 and they are evenly distributed along the circumference of the one-way valve inner shell (102).

5. The one-way valve for a dual external solenoid valve shock absorber according to claim 4, characterized in that: The bypass holes (1021) are 12 in number and are cylindrical in shape.

6. The one-way valve for dual external solenoid valve shock absorber according to claim 1, characterized in that: A second O-type sealing ring (105) is provided between the one-way valve outer shell (101) and the one-way valve inner shell (102).

7. The one-way valve for a dual external solenoid valve shock absorber according to claim 1, characterized in that: The spring (103) is a wave spring.

8. A double external electromagnetic valve shock absorber, comprising a one-way valve (1), a piston assembly (2), a liquid storage cylinder (3), a working cylinder (4), a restoring intermediate cylinder (5), and a compression intermediate cylinder (6); the restoring intermediate cylinder (5) is provided with an electromagnetic valve flow hole (501), and the one-way valve (1) is arranged at the restoring electromagnetic valve flow hole (501); the liquid storage cylinder (3) is provided with a restoring electromagnetic valve seat (7), and the restoring electromagnetic valve is arranged in the restoring electromagnetic valve seat (7), and the restoring electromagnetic valve is butted with the top of the one-way valve (1); the characteristics are: The one-way valve (1) is the one-way valve for the dual external solenoid valve shock absorber as claimed in claim 1.

9. The dual external solenoid valve shock absorber according to claim 8, characterized in that: A first O-type sealing ring (8) for sealing connection is provided at the connection between the one-way valve housing (101) and the restoring electromagnetic valve.

10. The dual external solenoid valve shock absorber according to claim 8, characterized in that: A third O-type sealing ring (9) for sealing connection is provided at the connection between the one-way valve inner shell (102) and the recovery intermediate cylinder (5).

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