Automobile seat pneumatic system pressure regulating controller and pneumatic massage air supply system

Abstract

The application provides an automobile seat pneumatic system pressure regulating controller and a pneumatic massage air supply system. The controller comprises a controller shell, which has a first space inside. At least one fluid flow channel is arranged in the first space. The input end of the fluid flow channel has a valve body mounting area. A micro mechanical fluid pressure control valve is arranged in the valve body mounting area. The micro mechanical fluid pressure control valve comprises a fluid output port and a pressure relief port. The fluid output port is in communication with the fluid flow channel, and the pressure relief port is in communication with the outside of the controller shell. The micro mechanical fluid pressure control valve can dynamically adjust the output air pressure value output to the fluid flow channel according to the input air pressure, and when the output air pressure value exceeds the set threshold value, the overpressure air flow is guided to the pressure relief port for discharge. The micro mechanical fluid pressure control valve is integrated in the controller shell, the integration effect is improved, the valve can dynamically adjust the output air pressure according to the actual demand, the gas loss is reduced, the economy of the high-pressure air source of the vehicle body is considered, and the gas is saved.

Description

Technical Field

[0001] This application relates to the field of automotive seat pneumatic technology, specifically to a pressure regulating controller and a pneumatic massage air supply system for automotive seats. Background Technology

[0002] Modern car seat pneumatic adjustment systems (such as lumbar support and seat height adjustment) typically require a stable low-pressure air source. Existing technologies generally employ two air supply solutions: one is an independent air pump, where a miniature air pump is installed separately inside the seat to directly generate the required low-pressure gas. While this solution can adapt to the seat's pressure requirements, the air pump occupies a large space and increases system cost and energy consumption. The second solution is a direct connection to the vehicle's air source, which directly utilizes the high-pressure air source from the vehicle's braking or suspension systems to generate high-pressure gas, which is then depressurized. Existing depressurization devices often use an overflow valve structure, which achieves depressurization by continuously releasing excess high-pressure gas. However, this method results in significant air waste, and frequent depressurization generates noise problems. Furthermore, existing pressure regulation systems often employ a separate design for the controller and mechanical valve, resulting in poor integration and a large space requirement. Utility Model Content

[0003] In view of the above-mentioned defects or deficiencies in the prior art, this application aims to provide a pressure regulating controller for a car seat pneumatic system and a pneumatic massage air supply system to improve integration.

[0004] In a first aspect, this application proposes a pressure regulating controller for an automotive seat pneumatic system, comprising: A controller housing, wherein the controller housing has a first space, and at least one fluid flow channel is provided in the first space, and the input end of the fluid flow channel has a valve body mounting area; A switching valve, wherein the switching valve is connected to the fluid flow channel; The control module is at least used to control the operating state of the switching valve; A miniature mechanical fluid pressure control valve is provided in the valve body mounting area. The miniature mechanical fluid pressure control valve includes a fluid inlet, a fluid outlet, and a pressure relief port. The fluid inlet is connected to the vehicle body air source, the fluid outlet is connected to the fluid flow channel, and the pressure relief port is connected to the outside of the controller housing. The micro mechanical fluid pressure control valve can dynamically adjust the output air pressure value to the fluid flow channel according to the input air pressure, and when the output air pressure value exceeds the set threshold, the overpressure gas will be discharged through the pressure relief port.

[0005] According to the technical solution provided in the embodiments of this application, a valve position group is provided in the first space corresponding to the fluid flow channel. Each valve position group includes multiple valve positions. One or two of the valve positions form the valve body mounting area. The micro mechanical fluid pressure control valve can be arranged vertically / horizontally in the valve body mounting area.

[0006] According to the technical solution provided in the embodiments of this application, the valve position in the first space is provided with the switching valve, the switching valve has an air outlet, the air outlet is used to connect with the air-using device, and an air supply port is formed on the air outlet.

[0007] According to the technical solution provided in the embodiments of this application, the miniature mechanical fluid pressure control valve has a parallel air path, and the parallel air path occupies the adjacent valve position of the valve position occupied by the miniature mechanical fluid pressure control valve.

[0008] According to the technical solution provided in the embodiments of this application, the fluid flow channel includes a main channel, and the input end of the main channel is connected to the fluid output port of the micro mechanical fluid pressure control valve.

[0009] According to the technical solution provided in the embodiments of this application, the air supply port may be flush with or not flush with the fluid input port.

[0010] According to the technical solution provided in the embodiments of this application, the pressure relief port of the micro mechanical fluid pressure control valve is connected to the first space.

[0011] According to the technical solution provided in the embodiments of this application, the miniature mechanical fluid pressure control valve includes: A housing assembly has a fluid inlet and a fluid outlet. The housing assembly internally forms a first regulating chamber, a fluid channel, and a second regulating chamber. The fluid inlet communicates with the first regulating chamber, and the fluid channel communicates with the fluid outlet, the first regulating chamber, and the second regulating chamber, respectively. The housing assembly is provided with a pressure balancing port and a pressure relief port. The pressure balancing port communicates with the fluid channel and the second regulating chamber, and the pressure relief port communicates with the second regulating chamber and the external environment. A valve body assembly, comprising: an adjusting valve core, the adjusting valve core being movably disposed within the housing assembly, the adjusting valve core extending from the first adjusting cavity through the fluid channel into the second adjusting cavity via a first adjusting port and a mounting hole, the adjusting valve core adjusting the opening or closing of the first adjusting port or the size of the air passage cross-section of the first adjusting port by moving the adjusting valve core; The valve body assembly further includes: an adjusting piston, which is movably disposed in the second adjusting chamber, the adjusting piston dividing the second adjusting chamber into a pressure regulating chamber and a pressure relieving chamber, the pressure regulating chamber being connected to the pressure balance port, and the pressure relieving chamber being connected to the pressure relieving port; The valve body assembly further includes: a first elastic member, one end of which abuts against the housing assembly and the other end of which abuts against the regulating valve core; and a second elastic member, one end of which abuts against the regulating piston and the other end of which abuts against the housing assembly.

[0012] According to the technical solution provided in the embodiments of this application, a pressure regulating component is provided on the side of the second regulating cavity away from the fluid channel. The pressure regulating component has an adjusting part and an abutting part. The abutting part is connected to one end of the second elastic member. The adjusting part drives the abutting part to move, so as to adjust the preload of the second elastic member.

[0013] According to the technical solution provided in the embodiments of this application, the adjusting piston is provided with a second sealing element, and the opening of the second sealing element is arranged facing the pressure regulating chamber.

[0014] According to the technical solution provided in the embodiments of this application, the outer wall of the housing assembly is provided with a pressure relief groove, the pressure relief groove is located on the outer periphery of the pressure relief port and communicates with the pressure relief port.

[0015] According to the technical solution provided in the embodiments of this application, a silencing component is provided at the pressure relief port.

[0016] Secondly, this application proposes a pneumatic massage air supply system for automotive seats, including an air suspension system and a pneumatic massage system installed in the vehicle seat. The pneumatic massage system includes a pressure regulating controller for the automotive seat pneumatic system as described above. The air suspension system includes an air suspension pump and a primary air tank connected to the air suspension pump. The primary air tank distributes fluid to the air suspension system and a pressure-reducing air storage device through a distribution valve. The primary air tank is connected to the pressure-reducing air storage device through a primary pressure-reducing device. The pressure-reducing air storage device is connected to the fluid input port of the micro-mechanical fluid pressure control valve in the pressure regulating controller for the automotive seat pneumatic system.

[0017] Compared with existing technologies, the advantages of this application are as follows: By integrating a miniature mechanical fluid pressure control valve into the controller housing, this application eliminates the component displacement risk associated with the separate design of traditional solenoid valves and mechanical valves. This integrated structure maintains component synchronization under vibration and high / low temperature conditions, effectively preventing pressure regulation failure. The miniature mechanical fluid pressure control valve can dynamically adjust the output air pressure according to actual needs, reducing gas loss compared to the continuous pressure relief method of traditional overflow valves, balancing the economy of high-pressure air sources in the vehicle body, and saving gas. This integrated approach reduces the size of the pressure regulation system, making it more suitable for the confined space of car seats. Through the mechanical pressure regulating valve, a single air source can simultaneously support differentiated air pressure supply for both low-pressure and high-pressure needs, thus expanding the range of application scenarios. Attached Figure Description

[0018] Figure 1 This is an exploded view of the controller housing.

[0019] Figure 2 A schematic diagram of the controller (with an added mounting section in the middle of the micro-mechanical fluid pressure control valve).

[0020] Figure 3 A schematic diagram of the structure of the automotive seat pneumatic system pressure regulating controller (a micro-mechanical fluid pressure control valve with a vertically bent input nozzle) provided in the embodiments of this application; Figure 4 A schematic diagram of the structure of the automotive seat pneumatic system pressure regulating controller (the miniature mechanical fluid pressure control valve adopts an integral external input nozzle) provided in the embodiments of this application; Figure 5 A schematic diagram of the structure of a pressure regulating controller (a miniature mechanical fluid pressure control valve with parallel air circuits) for an embodiment of this application; Figure 6 This is a schematic diagram of the overall operation of the pressure regulating controller for the automotive seat pneumatic system provided in an embodiment of this application; Figure 7 A cross-sectional schematic diagram of a miniature mechanical fluid pressure control valve (vertical bend inlet) provided for an embodiment of this application; Figure 8 A cross-sectional schematic diagram of a miniature mechanical fluid pressure control valve (integral extended inlet nozzle) provided for an embodiment of this application; Figure 9 A cross-sectional schematic diagram of a miniature mechanical fluid pressure control valve (with parallel air path) provided in an embodiment of this application; Figure 10 This is a cross-sectional view of the first form of a miniature mechanical fluid pressure control valve (vertical bend inlet) with a pressure regulating component.

[0021] Figure 11An exploded view of the first form of a miniature mechanical fluid pressure control valve (vertical bend inlet) with a pressure regulating component.

[0022] Figure 12 This is a cross-sectional view of a second form of a miniature mechanical fluid pressure control valve (vertical bend inlet) with a pressure regulating component.

[0023] Figure 13 A schematic diagram of the overall structure of a miniature mechanical fluid pressure control valve with a pressure relief groove.

[0024] Figure 14 Left view of a miniature mechanical fluid pressure control valve with a pressure relief groove.

[0025] Figure 15 A top view of a miniature mechanical fluid pressure control valve with a pressure relief groove.

[0026] Figure 16 for Figure 15 Cross-sectional view of the middle CC section.

[0027] Figure 17 This is a schematic diagram of the structure of the pneumatic massage air supply system for automobile seats provided in an embodiment of this application.

[0028] The text labels in the image represent: 1. Housing assembly; 2. Fluid inlet; 3. Fluid outlet; 4. First regulating chamber; 41. First regulating port; 5. Fluid passage; 51. Mounting hole; 6. Second regulating chamber; 61. Pressure regulating chamber; 62. Pressure relief chamber; 7. Pressure balance port; 8. Pressure relief port; 9. Regulating valve core; 91. First valve stem; 911. First limiting groove; 92. Second valve stem; 10. Regulating piston; 101. Pressure relief through hole; 11. First elastic element; 12. Second elastic element; 13. Main housing; 14. Constant pressure plug; 15. Inlet nozzle; 16. First sealing element; 7. Second seal; 18. Steel ball; 19. Miniature mechanical fluid pressure control valve; 20. Switch valve; 201. Air outlet; 21. Air supply device; 22. Controller housing; 23. Vehicle air source; 24. Fluid flow channel; 25. Air suspension air pump; 26. Primary air tank; 27. Air suspension system; 28. Pressure reducing and air storage device; 29. ​​Upper housing; 30. Lower housing; 31. Control module; 32. Pressure adjusting screw; 33. Pressure adjusting plug; 34. Pressure adjusting gasket; 35. Elastic snap-fit ​​structure; 36. Double-rail structure; 37. Pressure relief groove. Detailed Implementation

[0029] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0030] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0031] Example 1 As mentioned in the background section, in view of the problems in the prior art, this application proposes a pressure regulating controller for an automotive seat pneumatic system. Please refer to [link / reference]. Figure 1 (correspond Figure 7 Miniature mechanical fluid pressure control valve Figure 3 , Figure 7 As shown, it includes: The controller housing 22 has a first space inside, and at least one fluid flow channel 24 is provided in the first space. The input end of the fluid flow channel 24 has a valve body mounting area. Switch valve 20, which is connected to the fluid flow channel 24; Control module 31, the control module 31 is at least used to control the working state of the switching valve 20; A miniature mechanical fluid pressure control valve 19 is disposed in the valve body mounting area. The miniature mechanical fluid pressure control valve 19 includes a fluid inlet 2, a fluid outlet 3, and a pressure relief port 8. The fluid inlet 2 is connected to the vehicle air source 23, the fluid outlet 3 is connected to the fluid flow channel 24, and the pressure relief port 8 is connected to the outside of the controller housing 22. The micro mechanical fluid pressure control valve 19 can dynamically adjust the output air pressure value to the fluid flow channel 24 according to the input air pressure, and when the output air pressure value exceeds the set threshold, the overpressure gas will be discharged through the pressure relief port 8.

[0032] Specifically, such as Figure 1 and Figure 2As shown, the controller housing 22 is an injection-molded structure consisting of an upper housing 29 and a lower housing 30 joined together. It is typically made of plastic and is usually rectangular in shape for easy installation in relevant locations inside a car seat. Its internal first space is a large chamber containing at least one fluid channel 24. The fluid channel 24 is generally a cylindrical or cubic channel formed within the controller housing 22 through injection molding, used for fluid transport. The controller housing 22 has an inlet valve body mounting area whose dimensions are adapted to the shape of the miniature mechanical fluid pressure control valve 19. The miniature mechanical fluid pressure control valve 19 is installed in the valve body mounting area. Its fluid outlet 3 is connected to the fluid channel 24 via a sealed connection, ensuring smooth fluid flow from the valve to the fluid channel 24. The two can be connected by welding, threaded connection, or compression fitting. The pressure relief port 8 is directly connected to the outside of the controller housing 22 through a small hole to discharge overpressure airflow. Figure 1 As shown, the valve body mounting area is defined by the protruding mounting posts on the inner wall of the controller housing 22. The micro mechanical fluid pressure control valve 19 is aligned with the space between two adjacent protruding mounting posts and slowly inserted, so that the micro mechanical fluid pressure control valve 19 is positioned between the two protruding mounting posts.

[0033] The working principle is described as follows: When air pressure is input to the micro-mechanical fluid pressure control valve 19, the air pressure output to the fluid flow channel 24 decreases, and the valve dynamically adjusts its state according to the input air pressure to stabilize the air pressure output to the fluid flow channel 24. If the output air pressure exceeds a preset threshold, the valve automatically opens the pressure relief channel, guiding the overpressured airflow through the pressure relief port 8 to the outside of the controller housing 22 to ensure system pressure stability. This achieves precise regulation of the air pressure in the automotive seat pneumatic system, ensuring stable operation under different working conditions. Timely pressure relief when overpressure occurs prevents damage to the system due to excessive pressure, improving system safety and reliability.

[0034] In a preferred embodiment, a valve position group is provided in the first space corresponding to the fluid flow channel 24. Each valve position group includes multiple valve positions. One or two of the valve positions form the valve body mounting area. The miniature mechanical fluid pressure control valve 19 can be arranged vertically / horizontally in the valve body mounting area.

[0035] Specifically, valve position groups are set at the positions corresponding to the fluid flow channel 24 within the first space. Each valve position group contains multiple valve positions, which are generally protruding mounting posts machined on the inner wall of the controller housing 22. A valve position is formed between every two protruding mounting posts. One or two valve positions are combined to form a valve body mounting area, the shape and size of which are designed according to the external profile of the miniature mechanical fluid pressure control valve 19. The miniature mechanical fluid pressure control valve 19 can be installed vertically or horizontally within the valve body mounting area according to actual installation requirements. The valve position group configuration provides a suitable installation position for the miniature mechanical fluid pressure control valve 19. The vertical or horizontal installation method increases installation flexibility and can better adapt to different interior space layouts of automotive seats. This improves the space utilization of the controller and makes the structure more compact.

[0036] Furthermore, the miniature mechanical fluid pressure control valve 19 includes: The housing assembly 1 has a fluid inlet 2 and a fluid outlet 3. Inside the housing assembly 1, a first regulating chamber 4, a fluid channel 5, and a second regulating chamber 6 are formed. The fluid inlet 2 communicates with the first regulating chamber 4, and the fluid channel 5 communicates with the fluid outlet 3, the first regulating chamber 4, and the second regulating chamber 6, respectively. The housing assembly 1 is provided with a pressure balancing port 7 and a pressure relief port 8. The pressure balancing port 7 communicates with the fluid channel 5 and the second regulating chamber 6, and the pressure relief port 8 communicates with the second regulating chamber 6 and the external environment. The valve body assembly includes: a regulating valve core 9, which is movably disposed within the housing assembly 1. The regulating valve core 9 extends from the first regulating cavity 4 through the fluid channel 5 into the second regulating cavity 6 via a first regulating port 41 and a mounting hole 51. The movement of the regulating valve core 9 adjusts the opening and closing of the first regulating port 41 or the size of the air passage cross-section of the first regulating port 41. The valve body assembly further includes: an adjusting piston 10, which is movably disposed in the second adjusting chamber 6. The adjusting piston 10 divides the second adjusting chamber 6 into a pressure regulating chamber 61 and a pressure relief chamber 62. The pressure regulating chamber 61 is connected to the pressure balance port 7, and the pressure relief chamber 62 is connected to the pressure relief port 8. The valve body assembly further includes: a first elastic member 11, one end of which abuts against the housing assembly 1 and the other end of which abuts against the regulating valve core 9; and a second elastic member 12, one end of which abuts against the regulating piston 10 and the other end of which abuts against the housing assembly 1.

[0037] like Figure 1 , Figure 3 and Figure 7As shown, the fluid flow channel 24 includes a main channel and branch channels that are interconnected. After the miniature mechanical fluid pressure control valve 19 is installed in the valve body mounting area, it needs to be connected to the branch channels of the fluid flow channel 24. The input end of the main channel is connected to the fluid output port 3 of the miniature mechanical fluid pressure control valve 19, and the two can be connected by welding, threaded connection, or compression fitting, etc. Figure 4 , Figure 5 , Figure 8 and Figure 9 As shown, the fluid outlet 3 is directly axially connected to the main channel input end, without the need for branch lines.

[0038] Whether or not a branch is set depends mainly on the spatial relationship between the inlet 15 and the main channel. For vertically bent types, an external branch is set due to the need for air path turning, while other types achieve air path connection through axial direct connection.

[0039] Further, the valve body assembly has a first state, in which the magnitude of the first resultant force generated by the fluid pressure in the pressure regulating chamber 61 and the elastic force of the first elastic element 11 is equal to the magnitude of the second resultant force generated by the fluid pressure in the pressure relief chamber 62 and the elastic force of the second elastic element 12. The regulating valve core 9 and the regulating piston 10 are stationary, and the regulating valve core 9 closes one end of the pressure relief through hole 101, while the first regulating port 41 is open. The valve body assembly has a second state, in which the magnitude of the first resultant force is greater than the magnitude of the second resultant force. Both the regulating valve core 9 and the regulating piston 10 move towards the second elastic element 12, the regulating valve core 9 closes one end of the pressure relief through hole 101, and the air passage cross-sectional area of ​​the first regulating port 41 decreases or the first regulating port 41 is closed. The valve body assembly has a third state, in which the regulating valve core 9 is stationary, the first regulating port 41 is closed, the fluid pressure in the pressure regulating chamber 61 is greater than the second resultant force, the regulating piston 10 moves toward the second elastic element 12, the regulating valve core 9 is separated from one end of the pressure relief through hole 101, the pressure relief through hole 101 is opened, and the pressure regulating chamber 61 and the pressure relief chamber 62 are connected.

[0040] In practical applications of the miniature mechanical fluid pressure control valve 19, the working state and principle of the valve body assembly differ when the pressure relief port 101 is absent. Specifically, when the valve body assembly is in the first state, the magnitude of the first resultant force generated by the fluid pressure in the pressure regulating chamber 61 and the elastic force of the first elastic element 11 is equal to the magnitude of the second resultant force generated by the fluid pressure in the pressure relief chamber 62 and the elastic force of the second elastic element 12. The regulating valve core 9 and the regulating piston 10 are stationary. At this time, the first regulating port 41 remains open, and gas can normally flow from the fluid inlet 2 through the first regulating chamber 4 and the first regulating port 41, and then through the fluid channel 5 to the fluid outlet 3. The entire system is in a stable gas supply state. When the magnitude of the first resultant force is greater than that of the second resultant force, the valve body assembly enters the regulation stage of the second state. Both the regulating valve core 9 and the regulating piston 10 move towards the second elastic element 12, and the regulating valve core 9 gradually reduces the cross-sectional area of ​​the air passage of the first regulating port 41 until it is completely closed. Since there is no pressure relief orifice 101, no gas will be discharged through the pressure relief chamber 62. Instead, the output gas pressure is controlled by adjusting the first regulating port 41 through the regulating valve core 9. As the cross-sectional area of ​​the gas passage in the first regulating port 41 decreases, the gas flow rate decreases, and the output gas pressure decreases accordingly, thereby regulating the output gas pressure and maintaining it within a suitable range. When the fluid pressure in the pressure regulating chamber 61 is greater than the second resultant force, and the first regulating port 41 is closed, the valve assembly enters the third state. Since there is no pressure relief orifice 101, the regulating piston 10 cannot connect the pressure regulating chamber 61 and the pressure relief chamber 62 by opening the pressure relief orifice 101. At this time, if the pressure continues to rise and exceeds the tolerance range of the micro mechanical fluid pressure control valve 19, it may cause component damage or system failure. To avoid this situation, in designs without a pressure relief port 101, other protective measures can be added to the system, such as installing a pressure sensor and a safety valve. If the pressure sensor monitors the system pressure in real time, it will immediately send a signal to the control module 31 if it detects excessive pressure. The control module 31 can then take appropriate measures, such as shutting off the gas supply or adjusting the operating status of other components. The safety valve will automatically open to release excess gas when the pressure reaches a set safety threshold, ensuring the safe operation of the system.

[0041] Further, the housing assembly 1 includes a main housing 13, a pressure-regulating plug 14 connected to the main housing 13 at the end of the second elastic member 12 away from the adjusting piston 10, and an input nozzle 15 connected to the main housing 13 at the end of the first elastic member 11 away from the adjusting valve core 9, with the fluid input port 2 formed on the input nozzle 15. The adjusting valve core 9 includes a first valve stem 91 near the first elastic member 11 and a second valve stem 92 connected to the first valve stem 91 near the second elastic member 12, the diameter of the first valve stem 91 being larger than the diameter of the second valve stem 92; the first valve stem 91 is disposed in the first adjusting cavity 4, and the end of the second valve stem 92 away from the first valve stem 91 has a hemispherical pin corresponding to the pressure relief through hole 101. The end face of the first valve stem 91 away from the second valve stem 92 has a first limiting groove 911, and the first elastic member 11 is disposed in the first limiting groove 911. The end of the first valve stem 91 away from the second valve stem 92 has a flat end face or a tapered end face. The first adjusting cavity 4 and the second adjusting cavity 6 are distributed along the axial direction of the main housing 13, and the extending direction of the first adjusting cavity 4 and the second adjusting cavity 6 is the axial direction of the main housing 13, while the extending direction of the fluid channel 5 is the radial direction of the main housing 13.

[0042] In a preferred embodiment, a switching valve 20 is provided on the valve position in the first space. The switching valve 20 has an air outlet 201, which is used to connect to the air-using device 21. An air supply port is formed on the air outlet 201.

[0043] Specifically, such as Figure 6 As shown, multiple switching valves 20 are installed at positions corresponding to the fluid channels within the first space. These switching valves 20 are typically electromagnetically controlled valves, with a cubic or cylindrical shape, and can also be controlled by shape memory alloys. Each switching valve 20 has an outlet 201, which is a cylindrical tube with an outlet forming a gas supply port at its end. The outer diameter of the gas supply port matches the inner diameter of the connecting pipe of the gas-using device 21, and is connected to the gas-using device 21 through a sealed connection, ensuring smooth gas delivery to the device. The switching valves 20 are opened and closed electromagnetically. When gas needs to be supplied to the gas-using device 21, the charging air path of the switching valve 20 opens, and gas is delivered from the fluid channel through the outlet 201 to the gas-using device 21. When gas supply is not needed, the switching valve 20 closes, cutting off the charging air path and opening the venting air path. This achieves precise control of the gas supply to the gas-using device 21, improving the system's energy efficiency. The arrangement of multiple switching valves 20 can meet the needs of different gas-using devices 21, enhancing the versatility of the system.

[0044] In a preferred embodiment, the miniature mechanical fluid pressure control valve 19 has a parallel air path, which occupies the adjacent valve position of the valve position occupied by the miniature mechanical fluid pressure control valve 19.

[0045] Specifically, such as Figure 9 The diagram shows the specific structure of the miniature mechanical fluid pressure control valve 19, as follows: Figure 5 The diagram shows the structure of the adaptive pressure regulator. A parallel air path can be added next to the conventional valve position. The fluid output port 3 is changed from a straight line arrangement to an L-shaped bend design. The fluid output port 3 forms a 90° angle with the fluid channel. When the pressure of the main air path exceeds the set value, the pressure relief hole opens, and part of the fluid is diverted through the parallel air path. The diverted gas changes its flow direction through the L-shaped output port, forming a pressure gradient. The stiffness coefficient of the second elastic element is specially designed to enable the parallel air path to be linearly adjusted within the preset pressure range, making it suitable for a wide range of applications.

[0046] In a preferred embodiment, the fluid flow channel 24 includes a main channel, the input end of which is connected to the fluid output port 3 of the micro-mechanical fluid pressure control valve 19.

[0047] Specifically, the fluid flow channel 24 includes two main channels, which are cylindrical or cubical channels with a larger diameter. Their inlets are connected to the fluid outlet 3 of the micromechanical fluid pressure control valve 19 via a sealed connection. The main channels extend along the length of the rectangular controller housing 22 within the first space, providing a pathway for subsequent gas distribution. Gas regulated by the micromechanical fluid pressure control valve 19 enters the main channel from the fluid outlet 3 and is then transported through the main channel to various branch channels and the gas-using device 21.

[0048] In a preferred embodiment, the miniature mechanical fluid pressure control valve 19 further includes a fluid inlet 2, and the air supply port may be flush with or not flush with the fluid inlet 2.

[0049] Specifically, when the positional relationship between the air supply port and the fluid inlet 2 is different, the layout and air path design of the micro-mechanical fluid pressure control valve 19 within the controller housing 22 also differ. This is closely related to the different shapes and space-occupying characteristics of the micro-mechanical fluid pressure control valve 19. For example, taking the controller installed in an automotive seat starting system as an example, the first type occupies one valve position on each side of the controller, occupying a large space, but the end of its inlet nozzle 15 is flush with the air nozzle ends of the other switching valves; the second type occupies only one valve position on one side of the controller, occupying less space, but the end of the inlet nozzle 15 extends beyond the air nozzle ends of the other switching valves, posing a risk of the inlet nozzle 15 breaking; the third type occupies two valve positions on one side of the controller, with the end of the inlet nozzle 15 flush with the air nozzle ends of the other switching valves.

[0050] When the air supply port and fluid inlet 2 are aligned, the rearward shift of the air path design is of great significance. In this case, the air supply port (i.e., the air outlet 201) on the controller housing 22 is aligned with the fluid inlet 2, and the micro-mechanical fluid pressure control valve 19 occupies one or two valve positions vertically or horizontally depending on actual needs. The air path design at the location where the micro-mechanical fluid pressure control valve 19 is installed on the main housing 13 is a rearward shift, meaning that the fluid inlet 2 serves as the starting inlet for gas to enter the micro-mechanical fluid pressure control valve 19 for pressure regulation. In this rearward shift design, the gas first enters a buffer air path before entering the pressure regulation stage. This design not only ensures that the fluid inlet 2 and the air supply port are neatly arranged in appearance, facilitating the overall appearance design and installation positioning of the equipment, but also effectively buffers inlet pressure fluctuations.

[0051] Among them, such as Figure 3 and Figure 7 As shown, one type is a vertically bent inlet nozzle, employing a right-angle bend design, with the axis of the fluid inlet 2 parallel to and offset from the main housing 13. After the various switching valves are installed, they are arranged in a straight line through the controller and the exposed ends of all the nozzles. By setting the internal air passage of the inlet nozzle 15 at a 90° bend angle, the air passage is redirected within a limited space. This design allows the compressed gas received by the first regulating chamber 4 to enter through the bend channel, and the air passage cross-section is precisely controlled by the axial movement of the first valve stem 91. This design is the first form mentioned above. The bent inlet nozzle is more efficient in space utilization, occupying valve positions on both sides of the controller, which can effectively reduce the overall space occupation. Compared with the second form, although the bend structure increases the complexity to a certain extent, it avoids the risk of breakage caused by excessive extension of the inlet nozzle 15 end. Compared with the third form, its space utilization is more compact.

[0052] like Figure 4 and Figure 8 As shown, another type is the integral extended inlet nozzle, i.e., the second form mentioned above. In this type, the inlet nozzle 15 extends coaxially with the main housing 13. The pressure-regulating plug 14 and the inlet nozzle 15 form a symmetrical layout, giving the entire control valve a straight-line appearance. This straight-channel design significantly reduces flow resistance, making it particularly suitable for high-pressure conditions. Furthermore, the preload direction of the first elastic element 11 is consistent with the air intake direction. When the fluid input pressure increases, the axial displacement of the regulating valve core 9 is linearly related to the pressure change, enabling more precise pressure regulation. In terms of space occupancy, the integral extended inlet nozzle only occupies one valve position on one side, resulting in a smaller footprint.

[0053] From the perspective of the shape of the pressure reducing valve (miniature mechanical fluid pressure control valve 19), if the first type of pressure reducing valve is selected, it occupies a larger space because it occupies one valve position on each side. However, the inlet end is flush with the gas inlet ends of the other switching valves, and the rearward design of the gas path can better play a buffering role. It makes full use of its larger space layout advantage, so that the gas is more stably buffered before entering the pressure regulating stage, reducing the impact of instantaneous high pressure on the miniature mechanical fluid pressure control valve 19, thereby extending its service life. At the same time, it provides a more stable initial airflow state for the subsequent pressure regulating process, improves the pressure regulating accuracy, and ensures that the gas receiving device 21 receives gas with stable pressure.

[0054] If the third type of pressure reducing valve is selected, it occupies two valve positions on one side of the controller, with the inlet end flush with the nozzle ends of the other switching valves. This design is more spatially organized, effectively avoiding the risk of the inlet 15 breaking due to excessive extension. At the same time, compared to other types, it has advantages in valve position utilization and overall structural coordination, making the entire control valve look neater and facilitating integration with other components. Furthermore, the fluid output port 3 of this type of control valve is aligned with the air inlet of the other switching valves on the same side of the controller and the fluid delivery channel inside the controller, eliminating the need to move the fluid delivery channel at the control valve mounting location on the controller housing, thus simplifying the design of the main housing 13.

[0055] When the air supply port and fluid inlet 2 are not aligned, the controller can remain in its original state. This is the second type of pressure reducing valve, which occupies only one valve position on one side, taking up less space. However, the end of the inlet nozzle extends beyond the ends of the other on / off valve nozzles, posing a risk of nozzle breakage. Even when the air supply port and fluid inlet 2 are not aligned, this type of pressure reducing valve still functions due to its small space requirement. Furthermore, by keeping the controller in its original state, it can mitigate the additional impact of air path adjustments on the pressure reducing valve, reducing the risk of nozzle breakage. In this situation, the miniature mechanical fluid pressure control valve 19 can flexibly occupy suitable valve positions, such as vertically occupying one valve position close to the air inlet and setting the outlet at a higher position on the side of the housing; or horizontally occupying two valve positions, with the fluid inlet 2 at the bottom of one side and the outlet at the top of the other side, among other layouts. The gas path is reasonably bent and transitioned according to the valve position and the position of the inlet and outlet, which is suitable for scenarios with complex internal structure of equipment, irregular layout of various components, and special requirements for the position of the inlet and outlet. It meets the connection requirements of gas-using devices 21 in different positions, ensures smooth gas transmission and precise pressure regulation inside complex equipment, and improves the versatility and adaptability of the entire system.

[0056] It also includes a first seal 16 and a second seal 17. The first seal 16 is fitted onto the position where the inlet nozzle 15 engages with the main housing 13 to ensure a tight seal between the inlet nozzle 15 and the main housing 13 and prevent fluid leakage. The second seal 17 is fitted onto the adjusting piston 10 to prevent fluid from overflowing from the gap between the adjusting piston 10 and the inner wall of the second adjusting cavity 6. Here, the first seal 16 and the second seal 17 can be selected as annular rubber rings, and it also includes a steel ball 18, which is used to seal the through hole formed on the housing assembly 1 due to the manufacturing process.

[0057] In a preferred embodiment, the second regulating chamber 6 is provided with a pressure regulating component on the side away from the fluid channel 5. The pressure regulating component has an adjusting part and an abutting part. The abutting part is connected to one end of the second elastic member 12. The adjusting part drives the abutting part to move, thereby adjusting the preload of the second elastic member 12.

[0058] Specifically, the voltage regulating component can be implemented in at least two ways. The first way is as follows: Figure 10 and Figure 11 As shown, the pressure regulating assembly includes: a pressure regulating plug 33 disposed on the side of the second regulating chamber 6 away from the first regulating chamber 4; the pressure regulating plug 33 has a mounting through hole, and a pressure regulating screw 32 is threadedly connected to the mounting through hole; a pressure regulating shim 34 is disposed between one end of the pressure regulating plug 33 and the second elastic member 12; the surface of the pressure regulating shim 34 forms a contact portion, and the nut of the pressure regulating screw 32 forms an adjusting portion; by applying force to the pressure regulating screw 32 with a special tool, the pressure regulating screw 32 moves relative to the mounting through hole, thereby causing the pressure regulating shim 34 to squeeze or release the second elastic member 12, thereby changing the preload of the second elastic member 12, and thus adjusting the output pressure of the micro-mechanical fluid pressure control valve 19. Here, the special tool is, for example, a screwdriver.

[0059] The second form is as follows Figure 12 As shown, the pressure regulating assembly includes: an elastic snap-fit ​​structure 35 and a double-rail structure 36; the double-rail structure 36 is disposed on the side of the second regulating chamber 6 away from the first regulating chamber 4, and is used to provide guidance and limitation; the elastic snap-fit ​​structure 35 is movably disposed on the double-rail structure 36, with an abutment portion on the side facing the second elastic member 12 and an adjustment portion on the other side. By pushing the elastic snap-fit ​​structure 35 to slide along the double-rail structure 36 or positioning the elastic snap-fit ​​structure 35, the second elastic member 12 can be squeezed or released, changing the preload of the second elastic member 12, thereby adjusting the output pressure of the micro-mechanical fluid pressure control valve 19.

[0060] In a preferred embodiment, the adjusting piston 10 is provided with a second seal 17, the opening of the second seal 17 being disposed facing the pressure regulating chamber 61.

[0061] Specifically, such as Figure 10 and Figure 12 As shown, the second seal 17 is fitted into the circumferential sealing groove of the regulating piston 10, with its opening facing the pressure regulating chamber 61. When the pressure in the pressure regulating chamber 61 increases, the gas pressure acts on the opening of the second seal 17, causing it to expand outward and fit more tightly against the inner wall of the second regulating chamber 6, thereby forming a dynamic self-tightening seal. This effectively prevents high-pressure gas from leaking from the pressure regulating chamber 61 to the pressure relief chamber 62, ensuring the accuracy of pressure establishment and control in the pressure regulating chamber 61.

[0062] In a preferred embodiment, such as Figure 13 , Figure 14 , Figure 15 and Figure 16 As shown, the outer wall of the housing assembly 1 is provided with a pressure relief groove 37. The pressure relief groove 37 is located on the outer periphery of the pressure relief port 8 and communicates with the pressure relief port 8. It is used to prevent the outer wall of the micro mechanical fluid pressure control valve 19 from being too tightly fitted with the installation space and blocking the pressure relief port 8 after the micro mechanical fluid pressure control valve 19 is installed.

[0063] Specifically, the pressure relief port 8 can be implemented in at least two forms. The first form is a pressure relief hole directly opened on the housing assembly 1, which serves as the pressure relief port 8. The second form is that after the tail of the housing assembly 1 is assembled with the pressure-regulating plug 14 and other fastening components, the annular gap or channel formed between their snap-fit ​​interfaces constitutes the pressure relief port 8. To ensure the unobstructed flow of the pressure relief channel after assembly, a pressure relief groove 37 is opened in the housing assembly 1, which is arranged circumferentially around the pressure relief port 8. This groove is used to prevent the pressure relief port 8 or the gap of the snap-fit ​​interface from being blocked due to the interference fit between the outer shell of the micro mechanical fluid pressure control valve 19 and the valve body mounting area of ​​the controller housing 22, or due to assembly tolerances, thereby ensuring the reliability of the overflow function.

[0064] In a preferred embodiment, the pressure relief port 8 of the micro mechanical fluid pressure control valve 19 is connected to the first space.

[0065] In a preferred embodiment, the miniature mechanical fluid pressure control valve 19 is disposed between two adjacent switching valves 20, or on the outside of the switching valves 20 located at the edge.

[0066] Specifically, such as Figure 6 As shown, the miniature mechanical fluid pressure control valves 19 installed in different positions can regulate the pressure of the gas entering the system, and then deliver the regulated gas to the switching valve 20 and the gas-using device 21. Different installation positions can be selected according to the space inside the car seat and the pipeline layout, which improves the adaptability of the system.

[0067] In a preferred embodiment, a silencing component is provided at the pressure relief port 8.

[0068] Specifically, the noise reduction component can be a porous structure such as a noise-reducing sponge or sintered block located at the pressure relief port 8, or it can be connected to a noise reduction cavity located inside the controller housing 22. The noise reduction component effectively reduces the pressure relief noise and improves the comfort of the ride.

[0069] Example 2 Based on Example 1, this example proposes a pneumatic massage air supply system for car seats, such as... Figure 17 As shown, the system includes the air suspension system 27, which includes an air suspension pump 25 and a primary air tank 26 connected to the air suspension pump 25. The primary air tank 26 distributes fluid to the air suspension system 27 and the pressure-reducing air storage device 28 through a distribution valve. The primary air tank 26 is connected to the pressure-reducing air storage device 28 through a primary pressure-reducing device. The pressure-reducing air storage device 28 is connected to the fluid inlet 2 of the micro-mechanical fluid pressure control valve 19 in the pressure regulating controller of the automotive seat pneumatic system.

[0070] Specifically, in the pneumatic massage air supply system for car seats constructed in this embodiment, the air suspension system 27 works in coordination with the pneumatic massage system in the vehicle seat, and with the help of a uniquely designed mechanical fluid pressure controller, a multi-level pressure regulation function is achieved, providing precisely adapted air pressure for different air demand needs.

[0071] Taking a pressure-reducing air storage device including a pressure-reducing air storage device 28 and a three-stage pressure regulation system as an example, firstly, the air suspension system 27, as a key component for vehicle chassis support and comfort adjustment, has an air suspension pump 25 responsible for drawing air from the outside and delivering the compressed gas to the primary air storage tank 26. The primary air storage tank 26 initially stabilizes and stores the pressure, smoothing out pressure fluctuations in the pump's output gas and providing a relatively stable air source for subsequent distribution. Through the distribution valve, the primary air storage tank 26 precisely distributes the fluid to each air suspension component, meeting the air pressure requirements under different operating conditions such as chassis height and suspension stiffness during vehicle operation. This constitutes the first stage of pressure regulation in the system. Between the air suspension pump 25 and the primary air storage tank 26, the pump's own characteristics and the buffering and stabilizing effect of the storage tank achieve initial pressure regulation.

[0072] Next, the pressure-reducing gas storage device 28 connected to the primary gas storage tank 26 constitutes the second stage of pressure regulation. The pressure-reducing gas storage device further refines the pressure regulation. After receiving gas from the primary gas storage tank 26, it optimizes the gas pressure a second time by utilizing its own volumetric characteristics and internal structure, or by using a pressure regulating device installed between it and the primary gas storage tank 26. After connecting to the fluid inlet 2 of the miniature mechanical fluid pressure control valve within the automotive seat pneumatic system pressure controller, the pressure-reducing gas storage device 28 delivers pre-treated gas with more stable pressure.

[0073] Finally, when the gas enters the controller housing 22 of the car seat pneumatic system pressure regulator, its pressure is reduced by the micro-mechanical fluid pressure control valve 19. Furthermore, by changing the on / off state of the fluid channel 5 or the size of the air passage, the gas can be output at a pressure precisely tailored to the needs of the pneumatic massage system. Using the vehicle's air source eliminates the need for a separate air source, reducing system space and cost, and avoiding the potential failure risks associated with a separate air source, thus improving system reliability. For the pneumatic massage system in the vehicle seat, this precise three-level pressure regulation ensures the uniformity and comfort of the massage intensity, preventing poor massage effects or discomfort to the user due to unstable air pressure. It also ensures the stable and reliable operation of the air suspension system 27 under various road conditions, comprehensively enhancing the vehicle's driving and riding experience.

[0074] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the methods and core ideas of this application. The above descriptions are only preferred embodiments of this application. It should be noted that due to the limitations of written expression, while there are objectively infinite specific structures, those skilled in the art can make several improvements, modifications, or changes without departing from the principles of this invention, and can also combine the above technical features in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered within the scope of protection of this application.

Claims

1. A pressure regulating controller for an automotive seat pneumatic system, characterized in that, include: The controller housing (22) has a first space inside, and at least one fluid channel (24) is provided in the first space. The input end of the fluid channel (24) has a valve body mounting area. A switching valve (20) is connected to the fluid flow channel (24); The control module (31) is used at least to control the working state of the switching valve (20); A miniature mechanical fluid pressure control valve (19) is provided in the valve body mounting area. The miniature mechanical fluid pressure control valve (19) includes a fluid inlet (2), a fluid outlet (3), and a pressure relief port (8). The fluid inlet (2) is connected to the vehicle air source (23), the fluid outlet (3) is connected to the fluid flow channel (24), and the pressure relief port (8) is connected to the outside of the controller housing (22). The micro mechanical fluid pressure control valve (19) can dynamically adjust the output air pressure value to the fluid flow channel (24) according to the input air pressure, and when the output air pressure value exceeds the set threshold, the overpressure gas will be discharged through the pressure relief port (8).

2. The pressure regulating controller for the automotive seat pneumatic system according to claim 1, characterized in that: A valve position group is provided in the first space corresponding to the fluid flow channel (24). Each valve position group includes multiple valve positions. One or two of the valve positions form the valve body mounting area. The micro mechanical fluid pressure control valve (19) is located in the valve body mounting area.

3. The pressure regulating controller for the automotive seat pneumatic system according to claim 2, characterized in that: The valve position in the first space is provided with the switch valve (20), the switch valve (20) has an air outlet (201), the air outlet (201) is used to connect to the air-using device (21), and an air supply port is formed on the air outlet (201).

4. The pressure regulating controller for the automotive seat pneumatic system according to claim 2, characterized in that: The miniature mechanical fluid pressure control valve (19) has a parallel air path, which occupies the adjacent valve position of the valve position occupied by the miniature mechanical fluid pressure control valve (19).

5. The pressure regulating controller for the automotive seat pneumatic system according to claim 1, characterized in that: The fluid flow channel (24) includes a main channel, the input end of which is connected to the fluid output port (3) of the micro mechanical fluid pressure control valve (19).

6. The pressure regulating controller for the automotive seat pneumatic system according to claim 3, characterized in that: The air supply port may be flush with or not flush with the fluid input port (2).

7. The pressure regulating controller for the automotive seat pneumatic system according to claim 1, characterized in that: The pressure relief port (8) of the micro mechanical fluid pressure control valve (19) is connected to the first space.

8. The pressure regulating controller for the automotive seat pneumatic system according to claim 1, characterized in that: The miniature mechanical fluid pressure control valve (19) includes: A housing assembly (1) has a fluid inlet (2) and a fluid outlet (3). The housing assembly (1) has a first regulating chamber (4), a fluid channel (5), and a second regulating chamber (6) inside. The fluid inlet (2) is connected to the first regulating chamber (4), and the fluid channel (5) is connected to the fluid outlet (3), the first regulating chamber (4), and the second regulating chamber (6), respectively. The housing assembly (1) is provided with a pressure balance port (7) and a pressure relief port (8). The pressure balance port (7) is connected to the fluid channel (5) and the second regulating chamber (6), and the pressure relief port (8) is connected to the second regulating chamber (6) and the external environment. The valve body assembly includes: a regulating valve core (9), which is movably disposed within the housing assembly (1). The regulating valve core (9) extends from the first regulating cavity (4) through the fluid channel (5) and into the second regulating cavity (6) via a first regulating port (41) and a mounting hole (51). The movement of the regulating valve core (9) adjusts the opening and closing of the first regulating port (41) or the size of the air passage cross section of the first regulating port (41). The valve body assembly further includes: an adjusting piston (10), which is movably disposed in the second adjusting chamber (6), and the adjusting piston (10) divides the second adjusting chamber (6) into a pressure regulating chamber (61) and a pressure relief chamber (62), the pressure regulating chamber (61) being connected to the pressure balance port (7), and the pressure relief chamber (62) being connected to the pressure relief port (8); The valve body assembly further includes: a first elastic element (11), one end of which abuts against the housing assembly (1) and the other end of which abuts against the regulating valve core (9); and a second elastic element (12), one end of which abuts against the regulating piston (10) and the other end of which abuts against the housing assembly (1).

9. The pressure regulating controller for the automotive seat pneumatic system according to claim 8, characterized in that: The second regulating chamber (6) is provided with a pressure regulating component on the side away from the fluid channel (5). The pressure regulating component has an adjusting part and an abutting part. The abutting part is connected to one end of the second elastic member (12). The adjusting part drives the abutting part to move, so as to adjust the preload of the second elastic member (12).

10. The pressure regulating controller for the automotive seat pneumatic system according to claim 8, characterized in that: The regulating piston (10) is provided with a second seal (17), and the opening of the second seal (17) is arranged facing the pressure regulating chamber (61).

11. The pressure regulating controller for the automotive seat pneumatic system according to claim 8, characterized in that: The outer wall of the housing assembly (1) is provided with a pressure relief groove (37), which is located on the outer periphery of the pressure relief port (8) and communicates with the pressure relief port (8).

12. The pressure regulating controller for the automotive seat pneumatic system according to claim 1, characterized in that: A silencer is provided at the pressure relief port (8).

13. A pneumatic massage air supply system for car seats, characterized in that: The system includes an air suspension system and a pneumatic massage system installed in a vehicle seat. The pneumatic massage system includes a pressure regulator controller for a car seat pneumatic system as described in any one of claims 1-12. The air suspension system (27) includes an air suspension pump (25) and a primary air tank (26) connected to the air suspension pump (25). The primary air tank (26) distributes fluid to the air suspension system (27) and a pressure-reducing air storage device (28) through a distribution valve. The primary air tank (26) is connected to the pressure-reducing air storage device (28) through a primary pressure-reducing device. The pressure-reducing air storage device (28) is connected to the fluid inlet (2) of the micro-mechanical fluid pressure control valve (19) in the pressure regulator controller for the car seat pneumatic system.

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