A valve body support seat structure

Abstract

The utility model relates to the field of automobile hydraulic control technology, more exactly relates to a valve body support seat structure, at least including hydraulic assembly and electromagnetic assembly, and the hydraulic assembly is fixedly connected through the flange bending closing of valve bush end part protruding with the electromagnetic assembly, the hydraulic assembly includes valve bush, valve bush filter screen, turbofan oil guide base, support seat, valve core, valve core support seat, locking steel ball, first external sealing ring assembly and second external sealing ring assembly, the valve bush is equipped with the oil inlet cavity of axial and the control oil cavity of radial, and the valve bush filter screen is formed valve bush assembly with valve bush interference riveting, and first external sealing ring assembly, second external sealing ring assembly are located valve bush outside, the spiral blade of turbofan oil guide base will axial impact disorderly oil flow be forced to convert into rotating laminar flow, and the vortex conversion cavity formed in cooperation with support seat makes oil liquid flow along fixed track, reduces turbulent friction dissipation, reduces the energy consumption of hydraulic system, adapts to the demand of new energy automobile to low energy consumption.

Description

Technical Field

[0001] This utility model relates to the field of automotive hydraulic control technology, and more specifically to a valve body support structure. Background Technology

[0002] The existing valve body support and matching hydraulic flow channel design of gearbox solenoid valves have the following technical limitations, resulting in insufficient hydraulic control performance:

[0003] Traditional solenoid valves have a smooth, straight cylindrical inner cavity. When oil enters from the axial inlet, it is randomly scattered, creating numerous turbulent vortices. These turbulences cause severe frictional dissipation of the oil's kinetic energy on the valve sleeve inner wall and support surface, resulting in an effective energy utilization rate of less than 50% and increased energy consumption in the hydraulic system.

[0004] Disordered turbulence makes the flow state of the oil in the valve cavity unstable. When the valve core adjusts the flow rate by axial movement, the oil cannot quickly adapt to the changes in the flow channel, resulting in a significant flow build-up delay (response time > 50ms). At the same time, turbulence causes uneven distribution of oil at the conical sealing surface of the valve core support, resulting in poor linearity between flow rate and valve core displacement (R² < 0.9), which cannot meet the requirements of high-precision hydraulic control.

[0005] In view of this, the present invention provides a valve body support structure. Utility Model Content

[0006] To achieve the above objectives, the present invention aims to provide a valve body support structure, which includes at least a hydraulic component and an electromagnetic component, wherein the hydraulic component and the electromagnetic component are fixedly connected by a flange protruding from the end of the valve sleeve and bent to close the opening.

[0007] The hydraulic components include a valve sleeve, a valve sleeve filter, a turbofan oil guide seat, a support seat, a valve core, a valve core support seat, a locking steel ball, a first external sealing ring assembly, and a second external sealing ring assembly.

[0008] The valve sleeve is provided with an axial oil inlet chamber and a radial control oil chamber. The valve sleeve filter screen is interference-fitted with the valve sleeve to form a valve sleeve assembly. The first external sealing ring assembly and the second external sealing ring assembly are located outside the valve sleeve.

[0009] The turbofan oil guide seat is an injection-molded structure, located in the oil inlet cavity and close to the oil inlet. Its outer circumference is interference-fitted with the inner wall of the valve sleeve. The turbofan oil guide seat is provided with at least two spiral blades distributed along the circumference. The spiral blades have an involute curved surface structure, which is used to convert the axially flowing oil into a rotating laminar flow.

[0010] The support base is a machined metal part, located below the turbofan oil guide seat and with an interference fit to the inner wall of the valve sleeve. The top of the support base and the bottom of the turbofan oil guide seat form a swirling conversion cavity. The side wall of the support base is provided with a guide hole that communicates with the control oil cavity.

[0011] The valve core and the valve core support are riveted together. The bottom of the valve core support is provided with a conical sealing surface, which cooperates with the corresponding inclined surface of the valve sleeve inner cavity. The locking steel ball is located in the oil inlet chamber and is used to close the oil inlet.

[0012] The electromagnetic assembly includes a magnetic housing assembly, a rear yoke assembly, a first bearing and a second bearing, a magnetic core, a magnetic core shaft, a return spring, a steel ball spring seat, a first solenoid assembly, a second solenoid assembly, a pole shoe assembly, a first pin, a second pin, a gasket, a pin protective cover, and a dust cover. The magnetic housing assembly, the rear yoke assembly, and the pole shoe assembly form a magnetic field circuit. When the first solenoid assembly and the second solenoid assembly are energized, the magnetic core shaft drives the valve core to move axially to regulate and control the flow rate of the oil chamber.

[0013] As a further improvement to this technical solution, the turbofan oil guide seat has three spiral blades, which are evenly distributed along the circumference at 120°.

[0014] As a further improvement to this technical solution, the guide holes of the support base are waist-shaped holes distributed along the circumference, and the long axis of the holes is consistent with the rotation direction of the helical blades.

[0015] As a further improvement to this technical solution, the top of the spiral blade is aligned with the central axis of the oil inlet of the oil inlet chamber, and the end of the blade extends to the bottom edge of the turbofan oil guide seat and communicates with the vortex conversion chamber.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] 1. In this valve body support structure, the spiral blades of the turbofan oil guide seat force the disordered oil flow with axial impact into a rotating laminar flow. Combined with the swirling conversion cavity formed by the support seat, the oil flows along a fixed trajectory, reducing turbulent friction dissipation, lowering the energy consumption of the hydraulic system, and meeting the low energy consumption requirements of new energy vehicles.

[0018] 2. In this valve body support structure, the rotating laminar flow has the characteristic of conservation of angular momentum. When the valve core moves to adjust the flow rate, the oil can quickly adapt to the changes in the flow channel. At the same time, the laminar flow is evenly distributed at the conical sealing surface of the valve core support, so that the flow rate and the valve core displacement have a highly linear relationship, which meets the millisecond-level control requirements of multi-speed transmissions such as 8AT / 9AT.

[0019] 3. In this valve body support structure, the side wall of the support has a waist-shaped guide hole that is consistent with the rotation direction of the spiral blade. This guides the rotating oil into the control oil chamber in an orderly manner, avoiding secondary turbulence caused by the oil flow impacting the chamber wall. This ensures that the oil flows stably in the valve chamber and guarantees the consistency of hydraulic control. Attached Figure Description

[0020] The present invention will now be described in more detail by way of example, with reference to the accompanying drawings, in which:

[0021] Figure 1 This is a schematic diagram of the present invention;

[0022] Figure 2 This is a schematic diagram of the installation of the turbofan guide seat of this utility model;

[0023] Figure 3 This is a schematic diagram of the turbofan guide seat of this utility model.

[0024] The meanings of the labels in the diagram are as follows:

[0025] 2. Locking steel ball; 3. Valve sleeve filter screen; 4. Turbine fan oil guide seat; 5. Support seat; 6. Valve sleeve; 7. Pole shoe assembly; 8. Magnetic housing assembly; 9. First bearing; 10. Hydraulic assembly; 11. Gasket; 12. Pin protective cover; 13. First pin; 14. Dust cover; 15. Second pin; 16. Steel ball spring seat; 17. Rear yoke sleeve assembly; 18. Return spring; 19. First solenoid assembly; 20. Electromagnetic assembly; 21. Magnetic core shaft; 22. Second bearing; 23. Second solenoid assembly; 24. Valve core support seat; 25. Valve core; 26. First external sealing ring assembly; 27. Oil inlet chamber; 28. Second external sealing ring assembly; 31. Helical blade; 33. Guide hole; 34. Control oil chamber; 35. Magnetic core. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0028] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0029] Please see Figures 1-3 As shown, the purpose of this embodiment is to provide a valve body support structure, which includes at least a hydraulic component 10 and an electromagnetic component 20. The hydraulic component 10 and the electromagnetic component 20 are fixedly connected by bending and closing the flange 30 protruding from the end of the valve sleeve 6.

[0030] The hydraulic assembly 10 includes a valve sleeve 6, a valve sleeve filter screen 3, a turbofan oil guide seat 4, a support seat 5, a valve core 25, a valve core support seat 24, a locking steel ball 2, a first external sealing ring assembly 26, and a second external sealing ring assembly 28.

[0031] The valve sleeve 6 is provided with an axial oil inlet chamber 27 and a radial control oil chamber 34. The valve sleeve filter screen 3 is press-fitted with the valve sleeve 6 to form a valve sleeve assembly. The first external sealing ring assembly 26 and the second external sealing ring assembly 28 are located on the outside of the valve sleeve 6.

[0032] The turbofan oil guide seat 4 is an injection-molded structure, located in the oil inlet cavity 27 and close to the oil inlet. Its outer circumference is interference-fitted with the inner wall of the valve sleeve 6. The turbofan oil guide seat 4 is provided with at least two spiral blades 31 distributed along the circumference. The spiral blades 31 have an involute curved surface structure, which is used to convert the axially flowing oil into a rotating laminar flow.

[0033] The support base 5 is a machined metal part, located below the turbofan oil guide seat 4 and with an interference fit to the inner wall of the valve sleeve 6. The top of the support base 5 and the bottom of the turbofan oil guide seat 4 form a swirling conversion cavity 32. The side wall of the support base 5 is provided with a guide hole 33 that communicates with the control oil cavity 34.

[0034] The valve core 25 is riveted to the valve core support 24. The bottom of the valve core support 24 is provided with a conical sealing surface, which cooperates with the corresponding inclined surface of the inner cavity of the valve sleeve 6. The locking steel ball 2 is located in the oil inlet chamber 27 and is used to close the oil inlet.

[0035] The electromagnetic assembly 20 includes a magnetic housing assembly 8, a rear yoke assembly 17, a first bearing 9 and a second bearing 22, a magnetic core 35, a magnetic core shaft 21, a return spring 18, a steel ball spring seat 16, a first solenoid assembly 19, a second solenoid assembly 23, a pole shoe assembly 7, a first pin 13, a second pin 15, a gasket 11, a pin protective cover 12, and a dust cover 14. The magnetic housing assembly 8, the rear yoke assembly 17, and the pole shoe assembly 7 form a magnetic field circuit. When the first solenoid assembly 19 and the second solenoid assembly 23 are energized, the magnetic core shaft 21 drives the valve core 25 to move axially to regulate and control the flow rate of the oil chamber 34.

[0036] The turbofan oil guide seat 4 has 3 spiral blades 31, which are evenly distributed along the circumference at 120°.

[0037] The guide hole 33 of the support 5 is a waist-shaped hole distributed along the circumference, and the long axis of the hole is consistent with the rotation direction of the helical blade 31.

[0038] The top of the spiral blade 31 is aligned with the central axis of the oil inlet of the oil inlet chamber 27, and the end of the blade extends to the bottom edge of the turbofan oil guide seat 4 and communicates with the swirl conversion chamber 32.

[0039] The turbofan oil guide seat 4 is interference-fitted with the inner wall of the valve sleeve 6, with an interference amount of 0.03mm. It is axially positioned near the oil inlet side, 5mm away from the edge of the oil inlet.

[0040] The turbofan oil guide seat (4) is installed inside the valve sleeve and is joined together with the inner wall of the valve sleeve by an interference fit. The support seat (5) is also joined with the inner wall of the valve sleeve by an interference fit. The support seat is a metal-machined part with sufficient strength to support the turbofan oil guide seat and the oil pressure applied during oil inlet. This structure effectively solves the problem of turbulent oil inlet flow and the momentum conversion of orderly rotating laminar flow during oil inlet. It can improve the solenoid valve's resistance to hydraulic shock during use and improve the response rate.

[0041] Depend on Figure 3 As shown, the turbofan mechanism can be a segmented structure with two or more segments that are uniformly or non-uniformly distributed.

[0042] The support seat 5 supports the turbofan oil guide seat 4 and guides the rotating oil into the control oil chamber 34, avoiding the oil flow from impacting the chamber wall and generating turbulence.

[0043] Valve sleeve 6 and oil chamber design: the inner wall roughness of the oil inlet chamber 27 is Ra0.8μm, and the mating section of the turbofan oil guide seat 4 and the support seat 5 adopts precision machining tolerance IT8 to ensure stable oil flow rotation;

[0044] Key adaptation design of electromagnetic component 20: The magnetic core shaft 21 has a stroke of 8mm and a response time of ≤20ms, which is 40% higher than the traditional structure. Through the cooperation of the conical sealing surfaces of valve core 25 and valve core support seat 24, linear control of flow and displacement is achieved.

[0045] The working principle is as follows:

[0046] Oil flow process: Axial oil inlet, pressure oil 0.5-3MPa, enters the oil inlet chamber 27 from the oil inlet, and vertically impacts the spiral blades 31 of the turbofan oil guide seat 4;

[0047] Rotational Conversion: Guided by the curved surface of the blades, the oil generates a rotational motion along the circumference at a speed of about 500 r / min, forming a stable vortex in the vortex conversion chamber 32. The kinetic energy loss is reduced by 60%, and the turbulence dissipation rate of the traditional structure is 45%, while that of this structure is reduced to 18%.

[0048] Electromagnetic-hydraulic coordinated control: When the first solenoid assembly 19 and the second solenoid assembly 23 are energized, the magnetic core shaft 21 drives the valve core 25 to move, changing the gap between the valve core support seat 24 and the inclined surface of the valve sleeve 6. When the rotating oil passes through the gap, the flow rate is linearly related to the gap area, and the control accuracy reaches ±2%, compared to ±5% for the traditional structure.

[0049] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A valve body support structure, characterized in that: It includes at least a hydraulic component (10) and an electromagnetic component (20), wherein the hydraulic component (10) and the electromagnetic component (20) are fixedly connected by bending and closing the flange (30) protruding from the end of the valve sleeve (6); The hydraulic assembly (10) includes a valve sleeve (6), a valve sleeve filter (3), a turbofan oil guide seat (4), a support seat (5), a valve core (25), a valve core support seat (24), a locking steel ball (2), a first external sealing ring assembly (26), and a second external sealing ring assembly (28). The valve sleeve (6) is provided with an axial oil inlet chamber (27) and a radial control oil chamber (34). The valve sleeve filter (3) is press-fitted with the valve sleeve (6) to form a valve sleeve assembly. The first external sealing ring assembly (26) and the second external sealing ring assembly (28) are located outside the valve sleeve (6). The turbofan oil guide seat (4) is an injection-molded structure, located in the oil inlet cavity (27) and close to the oil inlet. Its outer circumference is press-fitted with the inner wall of the valve sleeve (6). The turbofan oil guide seat (4) is provided with at least two spiral blades (31) distributed along the circumference. The spiral blades (31) have an involute curved surface structure and are used to convert the axially flowing oil into a rotating laminar flow. The support base (5) is a metal processing part, located below the turbofan oil guide seat (4) and interference fit with the inner wall of the valve sleeve (6). The top of the support base (5) and the bottom of the turbofan oil guide seat (4) form a swirling conversion cavity (32). The side wall of the support base (5) is provided with a guide hole (33) that communicates with the control oil cavity (34). The valve core (25) is riveted to the valve core support seat (24). The bottom of the valve core support seat (24) is provided with a conical sealing surface, which cooperates with the corresponding inclined surface of the inner cavity of the valve sleeve (6). The locking steel ball (2) is located in the oil inlet chamber (27) and is used to close the oil inlet. The electromagnetic assembly (20) includes a magnetic housing assembly (8), a rear yoke assembly (17), a first bearing (9) and a second bearing (22), a magnetic core (35), a magnetic core shaft (21), a return spring (18), a steel ball spring seat (16), a first solenoid assembly (19), a second solenoid assembly (23), a pole shoe assembly (7), a first pin (13), a second pin (15), a gasket (11), a pin protection cover (12), and a dust cover (14). The magnetic housing assembly (8), the rear yoke assembly (17), and the pole shoe assembly (7) form a magnetic field circuit. When the first solenoid assembly (19) and the second solenoid assembly (23) are energized, the magnetic core shaft (21) drives the valve core (25) to move axially to adjust the flow rate of the control oil chamber (34).

2. The valve body support structure as described in claim 1, characterized in that: The turbofan oil guide seat (4) has three spiral blades (31) that are evenly distributed along the circumference at 120°.

3. The valve body support structure as described in claim 1, characterized in that: The guide hole (33) of the support base (5) is a waist-shaped hole distributed along the circumference, and the long axis of the hole is consistent with the rotation direction of the helical blade (31).

4. The valve body support structure as described in claim 1, characterized in that: The top of the spiral blade (31) is aligned with the central axis of the oil inlet of the oil inlet chamber (27), and the end of the blade extends to the bottom edge of the turbofan oil guide seat (4) and communicates with the swirling conversion chamber (32).

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