Electric control and mechanical two-in-one integrated proportional valve

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By highly integrating the electrical control components and mechanical components into the proportional valve body, the problem of separation between the electrical control and mechanical parts of the proportional valve in the prior art is solved, and higher reliability and stability are achieved, saving driving space.

CN222977489UActive Publication Date: 2025-06-13JINJIANG YUANJING (HUNAN) INTELLIGENT TECH CO LTD

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Patent Information

Application Number: CN202422328429.5
Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner
Filing Date: 2024-09-24
Publication Date: 2025-06-13
Estimated Expiration: 2034-09-24

AI Technical Summary

Technical Problem

The electronic control part of the proportional valve on the hydraulic retarder of existing commercial vehicles is separated from the mechanical part, occupying cab space, reducing driver comfort, and increasing cost and failure rate.

Method used

Design a two-in-one integrated proportional valve for electronic control machinery. By highly integrating electrical control components and mechanical components into the proportional valve body, the wiring harness connection needs are reduced and the component fitting density is improved.

Benefits of technology

It reduces the need for long-distance wiring harness connection between the electronic control and the mechanical part, improves the reliability and stability of the proportional valve, and saves driving space.

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Abstract

The utility model discloses an electric control mechanical two-in-one type integrated proportional valve, relates to the technical field of proportional valves, and discloses a proportional valve body, the proportional valve body is formed by integrating an electric control assembly and a mechanical assembly, the electric control assembly comprises a PCB and a proportional electromagnet, the PCB is arranged at the top end in the proportional valve body, the proportional electromagnet is arranged in the proportional valve body, and the proportional electromagnet is arranged in the proportional valve body. A proportional electromagnet is arranged on the side, close to the rear cover, of the interior of the proportional valve body. The mechanical assembly comprises a one-way quick release valve arranged in the proportional valve body. The electric control assembly and the mechanical assembly are highly integrated in the proportional valve body, due to tight combination of an electric control part and a mechanical part, the requirement for long-distance wire harness connection between the electric control part and the mechanical part is reduced, in addition, due to the integrated design, all components are matched more tightly, and the reliability of the proportional valve is improved. Performance fluctuation caused by vibration, temperature change and other environmental factors is reduced, the reliability and stability of the proportional valve are further improved, and the driving space is saved.

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Description

Technical Field

[0001] The utility model relates to the technical field of proportional valves, and particularly relates to an electro-mechanical two-in-one integrated proportional valve. Background Art

[0002] A proportional valve, also known as an electro-hydraulic proportional valve, is a valve that can convert an input electrical signal into force or displacement in proportion, thereby continuously controlling parameters such as pressure and flow in a hydraulic or pneumatic system. It combines the advantages of electronic technology, hydraulic technology, and mechanical design, and can achieve high-precision and high-reliability control in a wide range of industrial applications. In a commercial vehicle hydraulic retarder, the proportional valve is mainly used to adjust the pressure and flow of the retarder oil to control the deceleration effect of the vehicle.

[0003] In the prior art, the electronic control part and the mechanical part of the proportional valve on a commercial vehicle hydraulic retarder are separated, which will occupy the space in the cab, reducing the comfort of the driver. In addition, the electronic control part and the mechanical part need to be connected by a long wire harness, which not only increases the cost but also increases the occurrence of failure rate. Therefore, the utility model proposes an electro-mechanical two-in-one integrated proportional valve. Content of the Utility Model

[0004] The purpose of the utility model is to provide an electro-mechanical two-in-one integrated proportional valve to solve the problems proposed in the above background art, that is, in the prior art, the electronic control part and the mechanical part of the proportional valve on a commercial vehicle hydraulic retarder are separated, which will occupy the space in the cab, reducing the comfort of the driver. In addition, the electronic control part and the mechanical part need to be connected by a long wire harness, which not only increases the cost but also increases the occurrence of failure rate.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] An electro-mechanical two-in-one integrated proportional valve, including a proportional valve body, the proportional valve body is integrated by an electronic control component and a mechanical component, and an upper cover plate and a rear cover are respectively fixedly installed on the top surface and the rear side surface of the proportional valve body;

[0007] Among them, the electronic control component includes a PCB board and a proportional electromagnet. A PCB board is arranged at the top end inside the proportional valve body, and a proportional electromagnet is arranged on one side inside the proportional valve body close to the rear cover;

[0008] The mechanical assembly includes a one-way quick release valve disposed inside the proportional valve body. An adjusting air pressure chamber is provided inside the one-way quick release valve, and a main valve port connected to the adjusting air pressure chamber is provided outside the one-way quick release valve. A core shaft assembly for connecting with a proportional electromagnet is provided on one side of the one-way quick release valve. A slider is sleeved on the core shaft assembly. On the opposite side of the proportional electromagnet inside the proportional valve body, there is a base that forms a fluid passage with the one-way quick release valve. A main spring nut assembly is provided in the fluid passage at one end of the one-way quick release valve close to the base. A one-way valve abutting against the base is provided in the fluid passage on one side of the main spring nut assembly. A control air pressure quick exhaust port communicating with the fluid passage is opened inside the base, and a control air pressure outlet is communicated with the fluid passage of the control air pressure quick exhaust port.

[0009] Optionally, the electronic control assembly further includes a first electromagnet connector and a pressure sensor connector embedded in the top of the proportional valve body. The first electromagnet connector and the pressure sensor connector are both welded to the upper surface of the upper cover plate. A second electromagnet connector is further provided on the top of the proportional valve body.

[0010] Optionally, a breathing valve for adjusting the air pressure balance between the inside of the proportional valve body and the outside is provided on one side of the top end of the proportional valve body.

[0011] Optionally, an air source interface is embedded in the top end of the proportional valve body, and the air source interface is communicated with the control air pressure passage.

[0012] Optionally, a safety valve assembly is provided in the fluid passage outside the proportional valve body communicated with the control air pressure quick exhaust port.

[0013] Optionally, the proportional electromagnet internally includes an electromagnet assembly.

[0014] Optionally, a stator assembly cooperating with the proportional electromagnet is provided at the bottom of the proportional valve body.

[0015] The beneficial effects of the present utility model are as follows:

[0016] By highly integrating the electronic control assembly and the mechanical assembly inside the proportional valve body, due to the close combination of the electronic control part and the mechanical part, the requirement for long-distance wire harness connection between the electronic control part and the mechanical part is reduced. In addition, the integrated design makes the cooperation between components closer, reduces the performance fluctuations caused by environmental factors such as vibration and temperature changes, further improves the reliability and stability of the proportional valve, and saves the driving space. Description of the Drawings

[0017] Figure 1 It is a structural schematic diagram of an electro-mechanical two-in-one integrated proportional valve of the present utility model;

[0018] Figure 2 is a sectional view of the present utility model;

[0019] Figure 3 is a schematic diagram of the bottom structure of the proportional valve body in the present utility model;

[0020] Figure 4 is a top view of the present utility model;

[0021] Figure 5 is a top view of the present utility model after removing the upper cover plate.

[0022] Explanation of reference numerals in the drawings:

[0023] 1. Proportional valve body; 101. Upper cover plate; 102. Rear cover;

[0024] 2. PCB board; 3. Breather valve; 4. Proportional electromagnet; 5. Core shaft assembly; 6. Slide block; 7. One-way quick release valve; 701. Main valve port; 8. Adjusting air pressure chamber; 9. Main spring nut assembly; 10. One-way valve; 11. Base; 12. Control air pressure quick exhaust port; 13. Safety valve assembly; 14. Control air pressure outlet; 15. Air source interface; 16. First electromagnet connector; 17. Pressure sensor connector; 18. Second electromagnet connector; 19. Stator assembly. Specific embodiments

[0025] In order to make the technical means, creative features, achieved purposes and effects of the present utility model easy to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0026] The following will be described with reference to the preferred embodiments of the device of the present utility model.

[0027] Please refer to Figures 1-5 As shown, the electro-mechanical two-in-one integrated proportional valve includes a proportional valve body 1. The proportional valve body 1 is integrated with an electronic control component and a mechanical component. An upper cover plate 101 and a rear cover 102 are respectively fixedly installed on the top surface and the rear side surface of the proportional valve body 1;

[0028] Among them, the electronic control component includes a PCB board 2 and a proportional electromagnet 4. A PCB board 2 is arranged at the top end inside the proportional valve body 1. The PCB board 2, as the core of the circuit, is responsible for receiving external control signals, processing them through circuit logic, and outputting control signals to execution elements such as the proportional electromagnet 4. A proportional electromagnet 4 is arranged on one side inside the proportional valve body 1 close to the rear cover 102. According to the control signal provided by the PCB board 2, a corresponding electromagnetic force is generated. When current passes through the electromagnet coil, a magnetic field is generated, and the magnetic field generates an attractive or repulsive force on the iron core, thereby driving the mechanical components to move and controlling the opening and closing of the valve or adjusting the flow rate through the mechanical transmission mechanism.

[0029] The mechanical component includes a one-way quick release valve 7 disposed inside the proportional valve body 1. The one-way quick release valve 7 controls the opening and closing of the main valve port 701 by adjusting the pressure in the air pressure chamber 8 to achieve precise control of the fluid. The inside of the one-way quick release valve 7 is provided with an air pressure adjustment chamber 8, and the outside of the one-way quick release valve 7 is provided with a main valve port 701 connected to the air pressure adjustment chamber 8. When the pressure in the air pressure adjustment chamber 8 reaches the set value, the valve core is pushed to move, causing the main valve port 701 to open or close. At the same time, the one-way design ensures that the fluid can only flow in one direction. One side of the one-way quick release valve 7 is provided with a core shaft assembly 5 connected to the proportional electromagnet 4. A slider 6 is sleeved on the core shaft assembly 5. The core shaft assembly 5 converts the electromagnetic force generated by the proportional electromagnet 4 into mechanical motion, pushing the slider 6 to move, thereby controlling the opening and closing of the one-way quick release valve 7. On the opposite side of the proportional electromagnet 4 inside the proportional valve body 1, there is a base 11 that forms a fluid passage with the one-way quick release valve 7. At one end of the fluid passage of the one-way quick release valve 7 close to the base 11, there is a main spring nut assembly 9. A spring is installed inside the main spring nut assembly 9. When the electromagnetic force disappears, the elastic force of the spring pushes the valve core back to the initial position. On one side of the fluid passage of the main spring nut assembly 9, there is a one-way valve 10 that abuts against the base 11. The one-way valve 10 controls the one-way flow of the fluid and prevents backflow. Inside the base 11, there is a control air pressure quick exhaust port 12 connected to the fluid passage, and the fluid passage of the control air pressure quick exhaust port 12 is connected to a control air pressure outlet 14. The control air pressure quick exhaust port 12 is connected to an external air source. By adjusting the air pressure entering the air pressure adjustment chamber 8, precise control of the valve opening and closing degree is achieved. The control air pressure outlet 14 is used to output the adjusted air pressure to the system that needs to be controlled.

[0030] Furthermore, the electronic control component further includes a first electromagnet connector 16 and a pressure sensor connector 17 embedded in the top of the proportional valve body 1. Both the first electromagnet connector 16 and the pressure sensor connector 17 are welded to the upper surface of the upper cover plate 101. The top of the proportional valve body 1 is also provided with a second electromagnet connector 18. The second electromagnet connector 18 provides a safety relief channel. When the system pressure is abnormal, the pressure can be released through this interface to protect the system safety. Specifically, the first electromagnet connector 16 serves as the interface between the proportional electromagnet 4 and an external power source or control signal, ensuring that the current can be stably and safely transmitted to the proportional electromagnet 4 to drive its operation. The pressure sensor connector 17 is connected to a pressure sensor, which is used to monitor the pressure change inside the proportional valve body 1 in real time and convert the pressure signal into an electrical signal for transmission to the PCB board 2 for processing.

[0031] Furthermore, a breather valve 3 for adjusting the air pressure balance between the inside and outside of the proportional valve body 1 is provided on one side of the top end of the proportional valve body 1. The breather valve 3 allows air to flow freely between the inside and outside of the valve body to balance the air pressure. When the air pressure inside the valve body is higher than the outside, the breather valve 3 will open to release the excess gas; when the air pressure inside the valve body is lower than the outside, it will inhale the outside air to supplement.

[0032] Furthermore, an air source interface 15 is embedded at the top end of the proportional valve body 1. The air source interface 15 is connected to the control air pressure channel and is also connected to an external air source, introducing compressed air or other gases into the proportional valve body 1. Through the adjustment of pipelines and control components, a stable air pressure signal is transmitted to the control air pressure channel.

[0033] Furthermore, a safety valve assembly 13 is provided in the fluid channel outside the proportional valve body 1 that is connected to the control air pressure quick exhaust port 12. When the air pressure in the fluid channel exceeds the set value, the pressure sensing element inside the safety valve assembly 13 will trigger the release mechanism to open, releasing the excess gas to reduce the pressure. When the air pressure drops to the safe range, the release mechanism will automatically close to resume the normal operation of the system.

[0034] Furthermore, the proportional electromagnet 4 internally contains an electromagnet assembly that generates an electromagnetic force to drive the mechanical components inside the proportional valve to move.

[0035] Furthermore, a stator assembly 19 that cooperates with the proportional electromagnet 4 is provided at the bottom of the proportional valve body 1. The stator assembly 19 provides stable support and positioning functions to ensure that the proportional electromagnet 4 can maintain a stable movement trajectory and accuracy during operation.

[0036] Working principle:

[0037] Power-off state: When the PCB board 2 receives a power-off signal or does not receive a control signal, it will stop supplying current to the proportional electromagnet 4. Since the PCB board 2 stops power supply, the proportional electromagnet 4 loses the electromagnetic force and no longer generates a driving force on the mechanical components. In the case of power loss of the proportional electromagnet 4, the regulating air port will automatically open. This air port is usually connected to the control air pressure chamber and the outside, allowing the gas in the regulating air pressure chamber 8 to be discharged. Due to the opening of the regulating air port and the pressure loss of the air pressure chamber, the one-way quick release valve 7 is pushed to the closed position under the action of the pressure difference, thus closing the main valve port 701, which prevents the gas from flowing through the main valve port 701. As the air pressure chamber loses pressure, the closing of the one-way quick release valve 7 also blocks the channel between the control air pressure outlet 14 and the control air pressure quick exhaust port 12. At this time, if there is accumulated air pressure at the control air pressure quick exhaust port 12 before, it will be quickly discharged through this port to ensure that the control air pressure outlet 14 is in a low-pressure or zero-pressure state.

[0038] Power-on state: When the PCB board 2 receives a power-on signal or a control signal, it supplies current to the proportional solenoid 4. As the current passes through, the proportional solenoid 4 generates an electromagnetic force to drive the device to work, adjusting the air port to close, preventing external gas from continuing to enter or exit the pressure chamber. As the current increases and reaches the rated value, the electromagnetic force is large enough, and the mandrel assembly 5 pushes the slider 6 to move further, thus opening the main valve port 701. This allows gas to flow through the main valve port 701. As the main valve port 701 opens, the gas at the gas source interface 15 enters the regulating pressure chamber 8 through the fluid channel, establishing a certain air pressure. This air pressure acts on the one-way quick-release valve 7, pushing it to close the control air pressure quick exhaust port 12. When the one-way quick-release valve 7 closes the control air pressure quick exhaust port 12, the gas at the gas source interface 15 flows through the control air pressure outlet 14 to the actuator. At this time, by adjusting the current magnitude on the proportional solenoid 4, the air pressure in the pressure chamber can be precisely controlled, thereby achieving stable regulation and control of the pressure of the actuator. When the current remains unchanged, the air pressure will also remain relatively stable.

[0039] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. What is described in the above embodiments and the specification is only the principle of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection required by the present invention is defined by the appended claims and their equivalents.

Claims

1. An electrically controlled mechanical two-in-one integrated proportional valve, characterized in that: The proportional valve body (1) is integrated with an electric control component and a mechanical component, and an upper cover plate (101) and a rear cover (102) are respectively fixedly mounted on the top surface and the rear side surface of the proportional valve body (1); The electric control component comprises a PCB board (2) and a proportional electromagnet (4); the PCB board (2) is arranged at the top end of the proportional valve body (1); and the proportional electromagnet (4) is arranged at a side of the proportional valve body (1) close to the rear cover (102); The mechanical assembly comprises a one-way quick-release valve (7) disposed inside a proportional valve body (1), an adjusting air pressure chamber (8) being disposed inside the one-way quick-release valve (7), and a main valve port (701) connected to the adjusting air pressure chamber (8) being disposed outside the one-way quick-release valve (7), a mandrel assembly (5) connected to a proportional electromagnet (4) being disposed on one side of the one-way quick-release valve (7), a slider (6) being mounted on the mandrel assembly (5), and a relative position of the proportional valve body (1) with respect to the proportional electromagnet (4) being provided inside the one-way quick-release valve (7). A base (11) is provided on the side thereof to form a fluid passage with the one-way quick-release valve (7); a main spring nut assembly (9) is provided on the fluid passage at one end of the one-way quick-release valve (7) close to the base (11); a one-way valve (10) abutting against the base (11) is provided on the fluid passage on one side of the main spring nut assembly (9); a control air pressure quick-discharge port (12) connected to the fluid passage is provided inside the base (11); and the fluid passage of the control air pressure quick-discharge port (12) is connected to a control air pressure outlet (14).

2. The electronically controlled mechanical two-in-one integrated proportional valve according to claim 1, characterized in that: The electric control component also includes a first electromagnet connector (16) and a pressure sensor connector (17) embedded in the top of the proportional valve body (1), the first electromagnet connector (16) and the pressure sensor connector (17) are both welded to the upper surface of the upper cover plate (101), and a second electromagnet connector (18) is also provided on the top of the proportional valve body (1).

3. The electronically controlled mechanical two-in-one integrated proportional valve according to claim 1, characterized in that: A breathing valve (3) for adjusting the balance between the internal air pressure of the proportional valve body (1) and the external air pressure is provided on one side of the top end of the proportional valve body (1).

4. The electronically controlled mechanical two-in-one integrated proportional valve according to claim 1, characterized in that: An air source interface (15) is embedded at the top end of the proportional valve body (1), and the air source interface (15) is connected to a control air pressure channel.

5. The electronically controlled mechanical two-in-one integrated proportional valve according to claim 1, characterized in that: A safety valve assembly (13) is arranged in the fluid passage connecting the control air pressure quick exhaust port (12) to the outside of the proportional valve body (1).

6. The electronically controlled mechanical two-in-one integrated proportional valve according to claim 1, characterized in that: The proportional electromagnet (4) contains an electromagnet assembly.

7. The electronically controlled mechanical two-in-one integrated proportional valve according to claim 1, characterized in that: The bottom of the proportional valve body (1) is provided with a stator assembly (19) that matches the proportional electromagnet (4).