CN116951043A - Pilot valve of electromagnetic valve of shock absorber - Google Patents
Pilot valve of electromagnetic valve of shock absorber Download PDFInfo
- Publication number
- CN116951043A CN116951043A CN202311218941.8A CN202311218941A CN116951043A CN 116951043 A CN116951043 A CN 116951043A CN 202311218941 A CN202311218941 A CN 202311218941A CN 116951043 A CN116951043 A CN 116951043A
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- pilot valve
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- pilot
- core
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- 239000006096 absorbing agent Substances 0.000 title claims abstract description 25
- 230000035939 shock Effects 0.000 title claims abstract description 23
- 238000007789 sealing Methods 0.000 claims description 3
- 230000035945 sensitivity Effects 0.000 abstract description 3
- 238000013016 damping Methods 0.000 description 5
- 230000007423 decrease Effects 0.000 description 5
- 230000000712 assembly Effects 0.000 description 3
- 238000000429 assembly Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011217 control strategy Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- Magnetically Actuated Valves (AREA)
Abstract
The application discloses a pilot valve of a shock absorber electromagnetic valve, which comprises an upper cover, a main valve, a valve sleeve, a pilot valve seat, a pilot valve core, a shell, a magnetic core shaft and an electromagnetic coil assembly, wherein the main valve, the pilot valve seat and the pilot valve core are sequentially arranged in the valve sleeve; the magnetic core shaft is arranged in the shell and can be contacted with the outer wall of the pilot valve core, and the electromagnetic coil assembly is arranged on the other side of the shell. The application solves the technical problems of high sensitivity of a slide valve structure to oil pollution and high influence on product quality caused by the increase of processing cost due to small clearance between a valve seat and a valve core in the prior art through the pilot valve of the electromagnetic valve of the shock absorber.
Description
Technical Field
The application relates to the field of vibration absorbers, in particular to a pilot valve of a vibration absorber electromagnetic valve.
Background
With the development of the technical revolution of the electric and intelligent automobiles, the automobile chassis is subjected to technical transformation from the traditional chassis, the electric chassis and the wire control intelligent chassis. The intelligent suspension system is used as one of three systems of a drive-by-wire chassis, the intelligent suspension damper can adapt to the changes of the running working condition, road excitation, self-quality parameters and the like, and a control signal is output to an executing mechanism (CCD damper) through signal acquisition and processing, vehicle dynamics simulation, closed-loop control strategy and algorithm processing, so that the damping force of the damper can be continuously adjusted.
The electromagnetic valve of the shock absorber is used as a key part for realizing continuous adjustable damping force of the shock absorber, a new oil way is added to the traditional shock absorber, the opening of the oil way can be controlled through the opening of the electromagnetic valve, when different currents are fed into the electromagnetic valve of the shock absorber, the opening of the electromagnetic valve of the shock absorber is different, the flow is different, and therefore different damping forces are generated. The pilot valve of the solenoid valve is a key component for adjusting the size of an oil way by the solenoid valve, a spool with a cylindrical shaft shoulder moves along the axial direction to connect or disconnect the oil way, the spool is commonly referred to as a spool valve, the pilot valve in the prior art is the spool valve at present, the clearance between a valve seat and the spool is small, the processing cost is increased, and the spool valve structure has high sensitivity to oil pollution and influences the quality of products.
Disclosure of Invention
The application aims to provide a pilot valve of a shock absorber electromagnetic valve, which solves the technical problems of high sensitivity of a slide valve structure to oil pollution and high influence on product quality caused by the increase of processing cost due to small clearance between a valve seat and a valve core in the prior art.
In order to achieve the above purpose, the application provides a pilot valve of a shock absorber electromagnetic valve, which comprises an upper cover, a main valve, a valve sleeve, a pilot valve seat, a pilot valve core, a shell, a magnetic core shaft and an electromagnetic coil assembly, wherein the main valve, the pilot valve seat and the pilot valve core are sequentially arranged in the valve sleeve; the magnetic core shaft is arranged in the shell and can be contacted with the outer wall of the pilot valve core, and the electromagnetic coil assembly is arranged on the other side of the shell.
Furthermore, a step groove is formed in the valve sleeve, one end with a large diameter at the outer side of the valve sleeve is connected with the upper cover, and a gasket is arranged on the contact surface of the valve sleeve and the upper cover; the main valve is embedded in the middle position in the valve sleeve, and the pilot valve seat and the pilot valve core are arranged in one end of the small diameter of the valve sleeve.
Furthermore, the pilot valve seat and the pilot valve core are of special-shaped structures consisting of a circular ring and a conical column, the pilot valve seat is fixed on the valve sleeve through a spring valve plate, one end of the circular ring of the pilot valve seat is connected with the small-diameter tail end of the valve sleeve, the conical end of the pilot valve seat is inserted into a main valve spring, and the main valve spring is in abutting connection with the spring valve plate; the pilot valve core is movably connected with the small-diameter first section of the valve sleeve through clearance fit, and the pilot valve core moves linearly along the inner wall of the valve sleeve.
Furthermore, a plurality of through holes are formed in the conical end of the pilot valve seat, oil flow holes are uniformly distributed around the pilot valve seat, a blind hole is formed in the middle of the pilot valve seat, a conical flow hole is formed in the bottom of the pilot valve seat, and the oil flow holes are communicated with the conical flow holes through the blind holes; the inner diameter of the conical flow hole is matched with the outer diameter of the conical end of the pilot valve core.
Further, a stepped through hole is formed in the shell, the large-diameter end of the shell is connected with the valve sleeve, a front supporting sleeve and a bearing are further arranged on the inner wall of the small-diameter end of the shell, the bearing is coaxially arranged in the front supporting sleeve, and one end of the magnetic core shaft is movably connected to the bearing; the tail end of the small diameter end of the shell is connected with the connecting sleeve, and the outer wall of the shell is sleeved with a sealing ring.
Further, a rear supporting sleeve, a magnetic core and a shaft sleeve are arranged in the connecting sleeve, the magnetic core is coaxially arranged in the rear supporting sleeve, the magnetic core is inserted into the other end of the magnetic core shaft, the magnetic core shaft penetrates through the magnetic core, and the tail end of the magnetic core shaft is inserted into the shaft sleeve.
Further, the other ends of the connecting sleeve and the rear supporting sleeve are provided with electromagnetic coil assemblies, a clamping ring is arranged at the joint of the shell and the electromagnetic coil assemblies, and the electromagnetic coil assemblies are electrically connected with the magnetic core.
Based on the technical scheme, the application can produce the following beneficial effects:
the pilot valve of the electromagnetic valve of the shock absorber changes the pilot valve of the electromagnetic valve from a slide valve to a cone valve, the cone valve is a valve which is used for switching on or off an oil path by changing a gap between a valve core of the cone valve and a valve seat, the cone valve can completely cut off the oil path, a matching surface of a pilot valve seat and the pilot valve core is a conical surface, the pilot valve core moves left and right to adjust the size of the oil path between the pilot valve seat and the pilot valve core, when the pilot valve core moves left and is completely matched with the pilot valve seat, namely the oil path is cut off, the pilot valve seat and the pilot valve core in other states always keep a certain gap, a small amount of foreign matters in oil can smoothly pass through, and the clamping stagnation of the pilot valve seat and the pilot valve core is difficult to be caused.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present application;
FIG. 2 is a schematic diagram of a pilot valve according to an embodiment of the present application;
in the figure: 1. an upper cover; 2. a gasket; 3. a main valve; 4. a main valve spring; 5. a valve sleeve; 6. a spring valve plate; 7. a pilot valve seat; 8. a pilot spring; 9. a pilot spool; 10. a collar; 11. a front support sleeve; 12. a bearing; 13. a housing; 14. a seal ring; 15. connecting sleeves; 16. a rear support sleeve; 17. a magnetic core shaft; 18. a magnetic core; 19. a shaft sleeve; 20. an electromagnetic coil assembly; 21, a step of; an oil outlet; 22. a pressure chamber; 23. an oil flow through hole; 24. a conical flow hole.
Detailed Description
For a better understanding of the objects, structures and functions of the present application, a pilot valve of a shock absorber solenoid valve according to the present application will be described in further detail with reference to the accompanying drawings.
In the description of the present application, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
As shown in fig. 1, the pilot valve of the electromagnetic valve of the shock absorber is characterized by comprising an upper cover 1, a main valve 3, a valve sleeve 5, a pilot valve seat 7, a pilot valve core 9, a shell 13, a magnetic core shaft 17 and an electromagnetic coil assembly 20, wherein the main valve 3, the pilot valve seat 7 and the pilot valve core 9 are sequentially arranged in the valve sleeve 5, the upper cover 1 is installed on the outer side of the valve sleeve 5, an oil outlet 21 is formed between the upper cover 1 and the main valve 3 in a fitting manner, a pressure cavity 22 is formed in the main valve 3, a main valve spring 4 is arranged in the pressure cavity 22, the other end of the main valve spring 4 is abutted against the pilot valve seat 7, a pilot spring 8 is arranged between the pilot valve seat 7 and the pilot valve core 9, the pilot spring 8 is sleeved at the output end of the pilot valve core 9, and the other side of the valve sleeve 5 is connected with the shell 13; a magnetic core shaft 17 is arranged in the shell 13, the magnetic core shaft 17 can be in contact with the outer wall of the pilot valve core 9, and an electromagnetic coil assembly 20 is arranged on the other side of the shell 13.
A stepped groove is formed in the valve sleeve 5, one end with a large diameter at the outer side of the valve sleeve 5 is connected with the upper cover 1, and a gasket 2 is arranged on the contact surface of the valve sleeve 5 and the upper cover 1; the main valve 3 is embedded in the middle position in the valve sleeve 5, and the pilot valve seat 7 and the pilot valve core 9 are arranged in the small diameter end of the valve sleeve 5.
The pilot valve seat 7 and the pilot valve core 9 are of special-shaped structures consisting of circular rings and conical columns, the pilot valve seat 7 is fixed on the valve sleeve 5 through the spring valve plate 6, one end of the circular ring of the pilot valve seat 7 is connected with the small-diameter tail end of the valve sleeve 5, the conical end of the pilot valve seat 7 is inserted into the main valve spring 4, and the main valve spring 4 is abutted against the spring valve plate 6; the pilot valve core 9 is movably connected with the small diameter means of the valve sleeve 5 through clearance fit, and the pilot valve core 9 moves linearly along the inner wall of the valve sleeve 5.
The tapered end of the pilot valve seat 7 is provided with a plurality of through holes, the periphery of the pilot valve seat 7 is uniformly provided with oil flow holes 23, the middle part of the pilot valve seat 7 is provided with a blind hole, the bottom of the pilot valve seat 7 is provided with a tapered flow hole 24, and the oil flow holes 23 are communicated with the tapered flow hole 24 through the blind hole; the inner diameter of the tapered flow hole 24 is matched with the outer diameter of the tapered end of the pilot spool 9.
The oil flows into the pressure cavity 22 in the direction shown in fig. 2, flows into the oil flow hole 23 through the flow hole, and flows out through the conical flow hole 24 in the flow cross section, and flows out of the electromagnetic valve in the direction shown in fig. 2. The size of the middle blind hole and the taper of the bottom taper flow hole 24 can be adjusted according to the required pressure; the larger the flow area of the oil flow holes 23 around the pilot valve seat 7 is, the more uniform the pressure distribution of each current point of the electromagnetic valve is; the aperture of a blind hole in the middle of the pilot valve seat 7 is reduced, the pressure of the electromagnetic valve is increased, otherwise, the aperture of the blind hole is increased, and the pressure of the electromagnetic valve is reduced; the smaller the taper of the pilot valve seat 7, the better the pressure stability of each current point of the solenoid valve.
The head of the pilot valve core 9 is in a conical shape, the conical surface length and the conical degree are matched with those of the pilot valve seat 7, and the diameter of the pilot valve core 9 is set according to the required pressure; the diameter of the pilot spool 9 is increased, the solenoid valve pressure is reduced, whereas the spool diameter is reduced and the solenoid valve pressure is increased.
A stepped through hole is formed in the shell 13, the large-diameter end of the shell 13 is connected with the valve sleeve 5, a front supporting sleeve 11 and a bearing 12 are further arranged on the inner wall of the small-diameter end of the shell 13, the bearing 12 is coaxially arranged in the front supporting sleeve 11, and one end of a magnetic core shaft 17 is movably connected to the bearing 12; the tail end of the small diameter end of the shell 13 is connected with a connecting sleeve 15, and a sealing ring 14 is sleeved on the outer wall of the shell 13.
The connecting sleeve 15 is internally provided with a rear supporting sleeve 16, a magnetic core 18 and a shaft sleeve 19, the magnetic core 18 is coaxially arranged on the rear supporting sleeve 16, the other end of the magnetic core shaft 17 is inserted into the magnetic core 18, the magnetic core shaft 17 penetrates through the magnetic core 18, and the tail end of the magnetic core shaft 17 is inserted into the shaft sleeve 19.
The other ends of the connecting sleeve 15 and the rear supporting sleeve 16 are provided with an electromagnetic coil assembly 20, a joint of the shell 13 and the electromagnetic coil assembly 20 is provided with a clamping ring 10, and the electromagnetic coil assembly 20 is electrically connected with the magnetic core 18.
The specific operation principle of the application is as follows:
the electromagnetic coil assembly 20 is electrified, and electromagnetic force is increased along with the increase of current, when the electromagnetic force is larger than the pressure born by the pilot spring 8 and the pilot valve core 9, the magnetic core shaft 17 pushes the pilot valve core 9 to move leftwards, the conical flow hole 24 between the pilot valve seat 7 and the pilot valve core 9 is reduced, the pressure in the oil flow hole 23 is increased, and the pressure in the pressure cavity 22 is increased along with the conical flow hole, so that the main valve 3 is pushed to move leftwards, the oil outlet 21 is reduced, the pressure is increased, and the damping force of the shock absorber is increased.
As the current decreases to generate electromagnetic force, when the electromagnetic force is smaller than the pressure born by the pilot spring 8 and the pilot valve core 9, the magnetic core shaft 17 moves rightwards, the conical flow hole 24 between the pilot valve seat 7 and the pilot valve core 9 increases, the pressure in the cavity of the oil flow hole 23 decreases, the pressure in the pressure cavity 22 decreases along with the pressure, so that the main valve 3 is pushed to move rightwards, the oil outlet 21 increases, the pressure decreases, and the damping force of the shock absorber decreases.
It will be understood that the application has been described with respect to certain embodiments and that various changes and equivalents may be made to those features and embodiments without departing from the spirit and scope of the application. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the application without departing from the essential scope thereof. Therefore, it is intended that the application not be limited to the particular embodiment disclosed, but that the application will include all embodiments falling within the scope of the appended claims.
Claims (7)
1. The pilot valve of the electromagnetic valve of the shock absorber is characterized by comprising an upper cover (1), a main valve (3), a valve sleeve (5), a pilot valve seat (7), a pilot valve core (9), a shell (13), a magnetic core shaft (17) and an electromagnetic coil assembly (20), wherein the main valve (3), the pilot valve seat (7) and the pilot valve core (9) are sequentially arranged in the valve sleeve (5), the upper cover (1) is arranged on the outer side of the valve sleeve (5), an oil outlet (21) is formed between the upper cover (1) and the main valve (3), a pressure cavity (22) is formed in the main valve (3), a main valve spring (4) is arranged in the pressure cavity (22), the other end of the main valve spring (4) is abutted to the pilot valve seat (7), a pilot spring (8) is arranged between the pilot valve seat (7) and the pilot valve core (9), the pilot spring (8) is sleeved at the output end of the pilot valve core (9), and the other side of the valve sleeve (5) is connected with the shell (13); a magnetic core shaft (17) is arranged in the shell (13), the magnetic core shaft (17) can be in contact with the outer wall of the pilot valve core (9), and an electromagnetic coil assembly (20) is arranged on the other side of the shell (13).
2. The pilot valve of a shock absorber electromagnetic valve according to claim 1, wherein a stepped groove is formed in the valve sleeve (5), one end with a large diameter of the outer side of the valve sleeve (5) is connected with the upper cover (1), and a gasket (2) is arranged on the contact surface of the valve sleeve (5) and the upper cover (1); the main valve (3) is embedded in the middle position in the valve sleeve (5), and the pilot valve seat (7) and the pilot valve core (9) are arranged in one small-diameter end of the valve sleeve (5).
3. The pilot valve of a shock absorber electromagnetic valve according to claim 1, characterized in that the pilot valve seat (7) and the pilot valve core (9) are of special-shaped structures consisting of a circular ring and a conical column, the pilot valve seat (7) is fixed on the valve sleeve (5) through a spring valve plate (6), one end of the circular ring of the pilot valve seat (7) is connected with the small-diameter tail end of the valve sleeve (5), the conical end of the pilot valve seat (7) is inserted into the main valve spring (4), and the main valve spring (4) is abutted with the spring valve plate (6); the pilot valve core (9) is movably connected with the valve sleeve (5) through clearance fit, and the pilot valve core (9) moves linearly along the inner wall of the valve sleeve (5).
4. A pilot valve of a shock absorber electromagnetic valve according to claim 3, characterized in that a plurality of through holes are formed in the conical end of the pilot valve seat (7), oil flow holes (23) are uniformly formed in the periphery of the pilot valve seat (7), a blind hole is formed in the middle of the pilot valve seat (7), a conical flow hole (24) is formed in the bottom of the pilot valve seat (7), and the oil flow holes (23) are communicated with the conical flow holes (24) through the blind holes; the inner diameter of the conical flow hole (24) is matched with the outer diameter of the conical end of the pilot valve core (9).
5. The pilot valve of a shock absorber electromagnetic valve according to claim 1, characterized in that a stepped through hole is formed in the housing (13), a large diameter end of the housing (13) is connected with the valve sleeve (5), a front supporting sleeve (11) and a bearing (12) are further arranged on the inner wall of a small diameter end of the housing (13), the bearing (12) is coaxially arranged in the front supporting sleeve (11), and one end of a magnetic core shaft (17) is movably connected to the bearing (12); the tail end of the small diameter end of the shell (13) is connected with the connecting sleeve (15), and the outer wall of the shell (13) is sleeved with a sealing ring (14).
6. The pilot valve of a shock absorber electromagnetic valve according to claim 5, characterized in that a rear supporting sleeve (16), a magnetic core (18) and a shaft sleeve (19) are arranged in the connecting sleeve (15), the magnetic core (18) is coaxially arranged in the rear supporting sleeve (16), the other end of the magnetic core shaft (17) is inserted into the magnetic core (18), the magnetic core shaft (17) penetrates through the magnetic core (18), and the tail end of the magnetic core shaft (17) is inserted into the shaft sleeve (19).
7. A pilot valve for a shock absorber solenoid valve as claimed in claim 6 wherein the other end of said sleeve (15) and rear support sleeve (16) is provided with a solenoid assembly (20), the junction of the housing (13) and the solenoid assembly (20) is provided with a collar (10), said solenoid assembly (20) being electrically connected to the core (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311218941.8A CN116951043A (en) | 2023-09-21 | 2023-09-21 | Pilot valve of electromagnetic valve of shock absorber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311218941.8A CN116951043A (en) | 2023-09-21 | 2023-09-21 | Pilot valve of electromagnetic valve of shock absorber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116951043A true CN116951043A (en) | 2023-10-27 |
Family
ID=88458728
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311218941.8A Pending CN116951043A (en) | 2023-09-21 | 2023-09-21 | Pilot valve of electromagnetic valve of shock absorber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116951043A (en) |
Citations (15)
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|---|---|---|---|---|
| CN2103159U (en) * | 1991-08-17 | 1992-04-29 | 奚福民 | Digital pressure regulating valve |
| CN201494620U (en) * | 2009-08-07 | 2010-06-02 | 南京中船绿洲机器有限公司 | Latching valve of rotary vane-type steering engine |
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-
2023
- 2023-09-21 CN CN202311218941.8A patent/CN116951043A/en active Pending
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