Built-in direct proportion electromagnetic valve for shock absorber

Abstract

The utility model discloses a built-in direct proportion solenoid valve for a shock absorber, and relates to the field of solenoid valves, the built-in direct proportion solenoid valve for the shock absorber comprises a hydraulic structure and an electromagnetic mechanism which are assembled together, the hydraulic structure comprises an outer shell, a one-way valve structure A and a one-way valve structure B. The one-way valve structure A and the one-way valve structure B are arranged on the end face and the side face of the outer shell respectively. Fluid enters the electromagnetic valve in a one-way mode through the one-way valve structure B and then flows out of the one-way valve structure A. A first circulation mode and a second circulation mode are formed in the outer shell, and according to the first circulation mode, the fluid flows in from the one-way valve structure B on the end face of the outer shell and flows out from the one-way valve structure A on the side face of the outer shell. According to the second circulation mode, the fluid flows in from the one-way valve structure B on the side face of the outer shell and flows out from the one-way valve structure A on the end face of the outer shell, so that the fluid can only circulate in a one-way mode, namely the fluid flows in from the one-way valve structure B and flows out from the one-way valve structure A, and a direct proportion electromagnetic valve is formed.

Description

Technical Field

[0001] This utility model relates to the field of solenoid valves, specifically a built-in proportional solenoid valve for vibration dampers. Background Technology

[0002] The automotive suspension system is a crucial component related to vehicle safety. Shock absorbers are an essential part of the suspension system, used to reduce spring rebound and impacts from the road surface, improving the smoothness and comfort of the ride. Shock absorbers contain solenoid valves. Most solenoid valves on the market are either internal or external. Currently, the most common application of internal solenoid valves is the inverse proportional solenoid valve; direct proportional solenoid valves do not yet have mature applications. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a built-in proportional solenoid valve for a shock absorber to solve the deficiencies of the prior art.

[0004] The purpose of this utility model is achieved through the following technical solution: a built-in proportional solenoid valve for a shock absorber, comprising a hydraulic structure and an electromagnetic mechanism assembled together. The hydraulic structure includes a housing, a one-way valve structure A, and a one-way valve structure B. The one-way valve structure A and one-way valve structure B are provided on both the end face and the side face of the housing. Fluid enters the solenoid valve unidirectionally through the one-way valve structure B and then flows out from the one-way valve structure A. A first flow path and a second flow path are formed within the housing. The first flow path is: fluid flows in from the one-way valve structure B on the end face of the housing and flows out from the one-way valve structure A on the side face of the housing. The second flow path is: fluid flows in from the one-way valve structure B on the side face of the housing and flows out from the one-way valve structure A on the end face of the housing.

[0005] Furthermore, the one-way valve structure A includes a valve seat, a one-way valve seat A, a steel ball A, and a tower spring A. The outer shell has a valve groove A at the location where the one-way valve structure A is set. The one-way valve seat A is fixedly assembled in the valve groove A. The inner diameter of the one-way valve seat A gradually decreases along the direction close to the outer shell. The steel ball A is assembled in the one-way valve seat A. The valve seat is assembled at the large-diameter end of the one-way valve seat A. The tower spring A is assembled between the valve seat and the steel ball A.

[0006] Furthermore, the one-way valve structure B includes a one-way valve seat B, a steel ball B, and a tower spring B. The outer shell has a valve groove B at the location where the one-way valve structure B is set. A flow hole communicating with the valve groove B is opened in the outer shell. The one-way valve seat B is fixedly assembled in the valve groove B. The inner diameter of the one-way valve seat B gradually decreases in the direction away from the outer shell. The steel ball B is assembled in the inner hole of the one-way valve seat B. The tower spring B is disposed between the steel ball B and the flow hole.

[0007] Furthermore, the hydraulic structure also includes a main control sleeve, a main control seat, and a sealing seat assembled in the outer casing. The main control sleeve is sequentially assembled with a spring stop seat, a piston rod, a piston sleeve, a second gasket, a main spring, a main control end, and a first gasket along the direction near the end of the outer casing. The main control seat is assembled between the main control sleeve and the sealing seat, and the piston rod slides through the spring stop seat.

[0008] Furthermore, the main control sleeve is equipped with an adjustment seat, which is located between the spring stop seat and the electromagnetic mechanism. The end of the piston rod away from the piston sleeve contacts the adjustment seat, and a secondary spring is provided between the adjustment seat and the spring stop seat.

[0009] Furthermore, the sealing seat has a first flow channel, the main control seat has a first flow channel and a second flow channel, the main control end has a first flow channel and a second flow channel, the piston sleeve has a first flow channel, a second flow channel, and a third flow channel, the first flow channel being evenly distributed circumferentially on the side wall of the piston sleeve, the spring stop seat has a first flow channel, the regulating seat has a first flow channel, and the main control sleeve has a main control flow channel. The first flow channel, the second flow channel of the main control sleeve, and the third flow channel of the main control sleeve are respectively connected to the valve groove B and the first flow channel of the main control seat. The first flow channel of the main control seat, the second flow channel of the main control seat, the first flow channel of the main control end, the second flow channel of the main control end, the first flow channel of the piston sleeve, the second flow channel of the piston sleeve, the third flow channel of the piston sleeve, the first flow channel of the spring stop seat, the first flow channel of the regulating seat, the first flow channel of the main control sleeve, the second flow channel of the main control sleeve, and the third flow channel of the main control sleeve are connected in sequence. The third flow channel of the main control sleeve is connected to the inner hole of the one-way valve seat A on the side of the outer shell.

[0010] Furthermore, the electromagnetic mechanism includes a limiting structure, a drive assembly, a guide structure, an inlay, a magnetic base, and a coil assembly. The inlay is threadedly connected to the outer shell. The limiting structure is assembled in the inlay and contacts the main control sleeve. The guide structure is assembled in the bottom hole of the inlay. The drive assembly is slidably assembled in the guide structure. The control seat is located on the movement path of the drive assembly. The coil assembly is assembled to the outer circle of the inlay. The magnetic base is threadedly connected to the inlay and presses the coil assembly together.

[0011] Furthermore, a coil assembly sealing ring is fitted in the sealing ring groove of the coil assembly, and an inlay sealing ring is fitted in the sealing ring groove of the inlay.

[0012] Furthermore, a sealing seat sealing ring is installed in each of the two sealing ring grooves of the sealing seat, and a housing sealing ring is installed in the sealing ring groove on the outer wall of the outer shell.

[0013] The beneficial effects of this utility model are:

[0014] By setting up one-way valve structure A and one-way valve structure B, the fluid can only flow in one direction, that is, the fluid flows in from one-way valve structure B and flows out from one-way valve structure A, forming a proportional solenoid valve. When the current energized by the coil assembly is greater, that is, the electromagnetic force is greater, the gap between the piston rod and the piston sleeve will be smaller, thus linearizing the product performance curve. Attached Figure Description

[0015] Figure 1 This is a perspective view of a built-in proportional solenoid valve for a vibration damper according to the present invention.

[0016] Figure 2 This is a right view of a built-in proportional solenoid valve for a vibration damper according to the present invention.

[0017] Figure 3 for Figure 2 Sectional view along line AA;

[0018] Figure 4 for Figure 2 Sectional view along the BB direction;

[0019] Figure 5 for Figure 3 Enlarged view of point A in the middle;

[0020] Figure 6 for Figure 4 Enlarged view at point B in the middle;

[0021] Figure 7 for Figure 4 Enlarged view at point C;

[0022] In the diagram, 1-valve seat, 2-tower spring A, 3-one-way valve seat A, 4-steel ball A, 5-outer shell, 6-sealing seat, 7-main control sleeve, 8-main spring, 9-second gasket, 10-inset sealing ring, 11-secondary spring, 12-controlling seat, 13-limiting structure, 14-drive assembly, 15-guide structure, 17-coil assembly sealing ring, 18-sealing seat sealing ring, 19-main control seat, 20-first gasket, 21-outer shell sealing ring, 22-main control end, 23-piston sleeve, 24-spring stop seat, 25-piston rod, 26- Embedded body, 28-coil assembly, 30-magnetic seat, 31-one-way valve seat B, 32-steel ball B, 33-tower spring B, 41-sealing seat first flow channel, 42-main control seat first flow channel, 43-main control seat second flow channel, 44-main control end second flow channel, 45-main control sleeve second flow channel, 46-main control sleeve first flow channel, 47-adjustment seat first flow channel, 48-piston sleeve third flow channel, 49-spring stop seat first flow channel, 50-piston sleeve first flow channel, 51-piston sleeve second flow channel, 52-main control sleeve third flow channel, 53-main control end first flow channel. Detailed Implementation

[0023] The technical solution of this utility model is described in further detail below with reference to the accompanying drawings, but the scope of protection of this utility model is not limited to the following description.

[0024] Example 1

[0025] like Figures 1 to 7 As shown, a built-in proportional solenoid valve for a shock absorber includes a hydraulic structure and an electromagnetic mechanism assembled together. The hydraulic structure includes a housing 5, a one-way valve structure A, and a one-way valve structure B. One-way valve structures A and B are provided on both the end face and side face of the housing 5. Fluid enters the solenoid valve unidirectionally through the one-way valve structure B and then flows out from the one-way valve structure A. A first flow path and a second flow path are formed within the housing 5. The first flow path involves fluid flowing in from the one-way valve structure B on the end face of the housing 5 and flowing out from the outside. The fluid flows out through the one-way valve structure A on the side of the housing 5; the second flow mode is: the fluid flows in through the one-way valve structure B on the side of the housing 5 and flows out through the one-way valve structure A on the end face of the housing 5. Through the setting of the one-way valve structure A and the one-way valve structure B, the fluid can only flow in one direction, that is, the fluid flows in through the one-way valve structure B and flows out through the one-way valve structure A, forming a proportional solenoid valve. Secondly, a dual valve core design is adopted, that is, the one-way valve structure A and the one-way valve structure B, which can adjust the hydraulic linearity of the two flow modes (i.e., the compression and recovery of the shock absorber) respectively.

[0026] Example 2

[0027] Based on Example 1, such as Figures 1 to 6As shown, the one-way valve structure A includes a valve seat 1, a one-way valve seat A3, a steel ball A4, and a tower spring A2. The outer casing 5 has a valve groove A at the location where the one-way valve structure A is installed. The one-way valve seat A3 is fixedly assembled in the valve groove A. The inner diameter of the one-way valve seat A3 gradually decreases towards the outer casing 5. The steel ball A4 is assembled inside the one-way valve seat A3. The large-diameter end of the one-way valve seat A3 is fitted with the valve seat 1. The tower spring A2 is assembled between the valve seat 1 and the steel ball A4. Under the action of the tower spring A2, the steel ball A4 blocks the inner hole of the one-way valve seat A3. Under the action of the fluid pressure inside the outer casing 5, the steel ball A4 compresses the tower spring A2, causing the fluid to flow out from the solenoid valve, achieving one-way fluid flow. The one-way valve structure B includes a one-way valve... The valve seat B31, steel ball B32, and tower spring B33 are provided. The outer shell 5 has a valve groove B at the location where the one-way valve structure B is set. A flow hole is provided inside the outer shell 5 to connect the valve groove B. The one-way valve seat B31 is fixedly assembled in the valve groove B. The inner diameter of the one-way valve seat B31 gradually decreases in the direction away from the outer shell 5. The steel ball B32 is assembled in the inner hole of the one-way valve seat B31. The tower spring B33 is placed between the steel ball B32 and the flow hole. Under the action of the tower spring B33, the steel ball B32 blocks the inner hole of the one-way valve seat B31. Under the external fluid pressure of the electromagnet, the steel ball B32 squeezes the tower spring B33, so that the inner hole of the one-way valve seat B31 is connected to the valve groove B, allowing the fluid to enter the solenoid valve in one direction.

[0028] Example 3

[0029] Based on Example 2, such as Figures 1 to 7As shown, the hydraulic structure also includes a main control sleeve 7, a main control seat 19, and a sealing seat 6 assembled inside the outer casing 5. The main control sleeve 7 contains, in sequence, a spring stop seat 24, a piston rod 25, a piston sleeve 23, a second washer 9, a main spring 8, a main control end 22, and a first washer 20, arranged along the direction near the end of the outer casing 5. The main control seat 19 is assembled between the main control sleeve 7 and the sealing seat 6. The piston rod 25 slides through the spring stop seat 24. An adjustment seat 12 is assembled inside the main control sleeve 7, located between the spring stop seat 24 and the electromagnetic mechanism. The end of the piston rod 25 furthest from the piston sleeve 23 contacts the adjustment seat 12. A secondary spring 11 is arranged between the adjustment seat 12 and the spring stop seat 24. The sealing seat 6... The main control seat 19 has a first flow channel 41 for the sealing seat, a first flow channel 42 and a second flow channel 43 for the main control seat 19, a first flow channel 53 and a second flow channel 44 for the main control end 22, a first flow channel 50, a second flow channel 51 and a third flow channel 48 for the piston sleeve 23, and multiple first flow channels 50 are evenly distributed circumferentially on the side wall of the piston sleeve 23. The spring stop seat 24 has a first flow channel 49 for the spring stop seat, a first flow channel 47 for the regulating seat 12, and a first flow channel 46, a second flow channel 45 and a third flow channel 52 for the main control sleeve 7. The sealing seat has a first flow channel 41, a second flow channel 45 and a third flow channel 52 for the main control sleeve 7. The two ends of the flow channel 41 are respectively connected to the valve groove B and the first flow channel 42 of the main control seat. The first flow channel 42 of the main control seat, the second flow channel 43 of the main control seat, the first flow channel 53 of the main control end, the second flow channel 44 of the main control end, the first flow channel 50 of the piston sleeve, the second flow channel 51 of the piston sleeve, the third flow channel 48 of the piston sleeve, the first flow channel 49 of the spring stop seat, the first flow channel 47 of the regulating seat, the first flow channel 46 of the main control sleeve, the second flow channel 45 of the main control sleeve, and the third flow channel 52 of the main control sleeve are connected in sequence. The third flow channel 52 of the main control sleeve is connected to the inner hole of the one-way valve seat A3 on the side of the outer shell 5. In the first flow mode, the fluid flows into the first flow channel 41 of the sealing seat through the one-way valve structure B evenly distributed on the end face of the product, and then enters the main control seat. The first flow channel 42 and the second flow channel 43 of the main control seat are connected. Then, the fluid applies hydraulic pressure to the end face of the main control end 22 to push the main control end 22 to move to the right against the force of the main spring 8, thereby connecting the second flow channel 43 of the main control seat with the third flow channel 52 of the main control sleeve. Some fluid flows into the first flow channel 50, the second flow channel 51 and the third flow channel 48 of the piston sleeve through the first flow channel 53 and the second flow channel 44 of the main control end. Then, it flows through the first flow channel 49 of the spring stop seat to the first flow channel 47 of the control seat. Then, it flows to the first flow channel 46 of the main control sleeve and merges with the fluid flowing out of the second flow channel 45 of the main control sleeve and the third flow channel 52 of the main control sleeve. Finally, it flows out through the one-way valve structure A evenly distributed on the side of the product.

[0030] Second flow path: The fluid flows into the first flow channel 41 of the sealing seat through the one-way valve structure B evenly distributed on the side of the product, and then enters the first flow channel 42 and the second flow channel 43 of the main control seat. Then, the fluid applies hydraulic pressure to the end face of the main control end 22, pushing the main control end 22 to move to the right against the force of the main spring 8, thereby connecting the second flow channel 43 of the main control seat with the third flow channel 52 of the main control sleeve. Part of the fluid flows into the first flow channel 50, the second flow channel 51 and the third flow channel 48 of the piston sleeve through the first flow channel 53 and the second flow channel 44 of the main control end, and then flows through the first flow channel 49 of the spring stop seat to the first flow channel 47 of the control seat. Then it flows to the first flow channel 46 of the main control sleeve and merges with the fluid flowing out of the second flow channel 45 of the main control sleeve and the third flow channel 52 of the main control sleeve. Finally, it flows out through the one-way valve structure A evenly distributed on the end face of the product.

[0031] Example 4

[0032] Based on Example 3, such as Figures 1 to 5 As shown, the electromagnetic mechanism includes a limiting structure 13, a drive assembly 14, a guide structure 15, an inlay 26, a magnetic seat 30, and a coil assembly 28. The inlay 26 is threaded into the outer shell 5. The limiting structure 13 is assembled inside the inlay 26 and contacts the main control sleeve 7. The guide structure 15 is assembled in the bottom hole of the inlay 26. The drive assembly 14 is slidably assembled inside the guide structure 15. The control seat 12 is located on the moving path of the drive assembly 14. The coil assembly 28 is assembled to the outer circle of the inlay 26. The magnetic seat 30 is threadedly connected to the inlay 26 and presses the coil assembly 28 tightly. When the coil assembly 28 is energized, it generates electromagnetic force, which pushes the drive assembly 14 to move to the left, causing the control seat 12 to separate from the end face of the limiting structure 13, allowing fluid to flow through the gap. When the energized current is greater, i.e., the electromagnetic force is greater, the gap between the piston rod 25 and the piston sleeve 23 will be smaller, thus linearizing the product performance curve.

[0033] Furthermore, a coil assembly sealing ring 17 is installed in the sealing ring groove of the coil assembly 28 to improve the sealing performance at the assembly position of the coil assembly 28; an inlay sealing ring 10 is installed in the sealing ring groove of the inlay 26 to improve the sealing performance at the assembly position of the inlay 26; a sealing seat sealing ring 18 is installed in each of the two sealing ring grooves of the sealing seat 6 to improve the sealing performance at the assembly position of the sealing seat 6 and the outer shell 5; and an outer shell sealing ring 21 is installed in the sealing ring groove on the outer wall of the outer shell 1.

Claims

1. An in-line proportional solenoid valve for a shock absorber comprising a hydraulic structure and an electromagnetic mechanism assembled together, characterized in that, The hydraulic structure comprises an outer shell (5), a one-way valve structure A and a one-way valve structure B, the end face and the side face of the outer shell (5) are provided with the one-way valve structure A and the one-way valve structure B, fluid enters the electromagnetic valve in one way through the one-way valve structure B and then flows out from the one-way valve structure A, the outer shell (5) is formed with a first flow mode and a second flow mode, the first flow mode is that fluid flows in from the one-way valve structure B of the end face of the outer shell (5) and flows out from the one-way valve structure A of the side face of the outer shell (5), and the second flow mode is that fluid flows in from the one-way valve structure B of the side face of the outer shell (5) and flows out from the one-way valve structure A of the end face of the outer shell (5).

2. The built-in proportional solenoid valve for a shock absorber according to claim 1, characterized by The one-way valve structure A comprises a valve seat (1), a one-way valve seat A (3), a steel ball A (4) and a tower spring A (2), the outer shell (5) is provided with a valve groove A at the position where the one-way valve structure A is arranged, the one-way valve seat A (3) is fixedly assembled in the valve groove A, the inner diameter of the one-way valve seat A (3) gradually decreases along the direction close to the outer shell (5), the steel ball A (4) is assembled in the one-way valve seat A (3), the large-diameter end of the one-way valve seat A (3) is provided with the valve seat (1), and the tower spring A (2) is assembled between the valve seat (1) and the steel ball A (4).

3. The built-in proportional solenoid valve for a shock absorber according to claim 2, characterized in that The one-way valve structure B comprises a one-way valve seat B (31), a steel ball B (32) and a tower spring B (33), the outer shell (5) is provided with a valve groove B at the position where the one-way valve structure B is arranged, the outer shell (5) is provided with a flow hole communicating with the valve groove B, the one-way valve seat B (31) is fixedly assembled in the valve groove B, the inner hole diameter of the one-way valve seat B (31) gradually decreases along the direction away from the outer shell (5), the steel ball B (32) is assembled in the inner hole of the one-way valve seat B (31), and the tower spring B (33) is arranged between the steel ball B (32) and the flow hole.

4. The built-in proportional solenoid valve for a shock absorber according to claim 3, characterized in that The hydraulic structure further comprises a main control sleeve (7), a main control seat (19) and a sealing seat (6) which are assembled in the outer shell (5), the main control sleeve (7) is sequentially provided with a spring stop seat (24), a piston rod (25), a piston sleeve (23), a second gasket (9), a main spring (8), a main control end (22) and a first gasket (20) in the direction close to the end of the outer shell (5), the main control seat (19) is assembled between the main control sleeve (7) and the sealing seat (6), and the piston rod (25) slides through the spring stop seat (24).

5. The built-in proportional solenoid valve for a shock absorber according to claim 4, characterized in that, The main control sleeve (7) is provided with a control seat (12), the control seat (12) is located between the spring stop seat (24) and an electromagnetic mechanism, one end of the piston rod (25) away from the piston sleeve (23) contacts the control seat (12), and a secondary spring (11) is arranged between the control seat (12) and the spring stop seat (24).

6. The built-in proportional solenoid valve for a shock absorber according to claim 5, characterized by The sealing seat (6) is provided with a sealing seat first flow channel (41), the main control seat (19) is provided with a main control seat first flow channel (42) and a main control seat second flow channel (43), the main control end (22) is provided with a main control end first flow channel (53) and a main control end second flow channel (44), the piston sleeve (23) is provided with a piston sleeve first flow channel (50), a piston sleeve second flow channel (51) and a piston sleeve third flow channel (48), the piston sleeve first flow channel (50) is circumferentially and evenly provided on the side wall of the piston sleeve (23), the spring stop seat (24) is provided with a spring stop seat first flow channel (49), the control seat (12) is provided with a control seat first flow channel (47), the main control sleeve (7) is provided with a main control sleeve first flow channel (46), a main control sleeve second flow channel (45) and a main control sleeve third flow channel (52), wherein the two ends of the sealing seat first flow channel (41) are respectively communicated with the valve groove B and the main control seat first flow channel (42), and the main control seat first flow channel (42), the main control seat second flow channel (43), the main control end first flow channel (53), the main control end second flow channel (44), the piston sleeve first flow channel (50), the piston sleeve second flow channel (51), the piston sleeve third flow channel (48), the spring stop seat first flow channel (49), the control seat first flow channel (47), the main control sleeve first flow channel (46), the main control sleeve second flow channel (45) and the main control sleeve third flow channel (52) are sequentially communicated, and the main control sleeve third flow channel (52) is communicated with the inner hole of the one-way valve seat A (3) on the side surface of the shell (5).

7. The built-in proportional solenoid valve for a shock absorber according to claim 6, characterized by The electromagnetic mechanism comprises a limiting structure (13), a driving assembly (14), a guide structure (15), an embedded body (26), a magnetic guide seat (30) and a coil assembly (28), the embedded body (26) is threadedly connected in the shell (5), the limiting structure (13) is assembled in the embedded body (26) and contacts the main control sleeve (7), the guide structure (15) is assembled in the bottom hole of the embedded body (26), the driving assembly (14) is slidingly assembled in the guide structure (15), the control seat (12) is located on the movement path of the driving assembly (14), the coil assembly (28) is assembled to the outer circle of the embedded body (26), and the magnetic guide seat (30) is threadedly connected with the embedded body (26) and tightly presses the coil assembly (28).

8. The built-in proportional solenoid valve for a shock absorber according to claim 7, characterized by The coil assembly (28) is provided with a coil assembly sealing ring (17) in the sealing ring groove, and the embedded body (26) is provided with an embedded body sealing ring (10) in the sealing ring groove.

9. The built-in proportional solenoid valve for a shock absorber according to claim 4, characterized by The sealing seat (6) is provided with a sealing seat sealing ring (18) in each of the two sealing ring grooves, and the shell (5) is provided with a shell sealing ring (21) in the sealing ring groove on the outer wall.

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