Pressure regulating valve, high-low pressure integrated pneumatic controller, control system and control method

Abstract

The application discloses a pressure regulating valve, a high-low pressure integrated pneumatic controller, a control system and a control method. The pressure regulating valve comprises a first framework, a coil is wound around the outer periphery of the first framework, a U-shaped iron is arranged on the surface of the first framework, the inside of the first framework is hollow to form a first mounting space, a gas guide hole is arranged at one end of the first framework, a first opening is arranged at the other end of the first framework, and the gas guide hole and the first opening are in communication with the first mounting space; a silica gel cap, a first valve core, a first elastic element and a first plug are sequentially arranged in the first mounting space; the inside of a second framework is hollow to form a second mounting space, a third gas discharge hole is arranged at one end or the side wall of the second framework, a second opening is arranged at the end of the second framework away from the third gas discharge hole, and the third gas discharge hole and the second opening are in communication with the second mounting space; a second valve core and a second elastic element are sequentially arranged in the second mounting space; and the second opening is in communication with the first opening. The pressure regulating valve can meet different requirements of high-pressure inflation or low-pressure inflation.

Description

Technical Field

[0001] This invention generally relates to the field of automotive technology, and specifically to pressure regulating valves, high and low pressure integrated pneumatic controllers, control systems, and control methods. Background Technology

[0002] Most existing pneumatic controllers control pressure-maintaining and non-pressure-maintaining airbags via solenoid valves. The same air source can only achieve isobaric inflation. However, different people have different needs, and both pressure-maintaining and non-pressure-maintaining airbags may be inflated at high or low pressure. The isobaric inflation method of existing pneumatic controllers obviously cannot meet the needs. Furthermore, using a long inflation time to reach a high pressure state will affect the comfort and lifespan of the pressure-maintaining airbag. Conversely, using a short inflation time to reach a low pressure state will affect the performance and workload of the non-pressure-maintaining airbag.

[0003] Currently, the solution employed is to utilize air sources with different pressures to meet high and low pressure inflation requirements. However, using different pressure sources is costly and complex. Therefore, we propose a pressure regulating valve, an integrated high and low pressure pneumatic controller, a control system, and a control method to solve the aforementioned problems. Summary of the Invention

[0004] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide a pressure regulating valve, high and low pressure integrated pneumatic controller, control system and control method that are more applicable, improve user experience and effectively reduce costs.

[0005] In a first aspect, the present invention provides a pressure regulating valve, comprising:

[0006] A first frame has a coil wound around its outer periphery. A U-shaped iron is provided on the surface of the first frame, spanning the coil; the U-shaped iron enhances magnetism. The first frame is hollow, forming a first mounting space. One end of the first frame has a vent hole, and the other end has a first opening, both communicating with the first mounting space. Inside the first mounting space, from the side near the vent hole to the side near the first opening, a silicone cap, a first valve core, a first elastic element, and a first plug are arranged sequentially. The silicone cap is located at the end of the first valve core and controls the opening and closing of the vent hole. The free end of the first valve core abuts against one end of the first elastic element, and the other end of the first elastic element abuts against the first plug. The first elastic element provides a force for resetting the silicone cap and the first valve core. The first plug has a through-hole structure for gas flow.

[0007] The second frame has a hollow interior forming a second installation space. A third vent is provided at one end or on one side wall of the second frame, and a second opening is provided at the end furthest from the third vent. Both the third vent and the second opening communicate with the second installation space. Inside the second installation space, a second valve core and a second elastic element are sequentially arranged from the side closest to the second opening to the side closest to the third vent. One end of the second elastic element abuts against the bottom of the second installation space, and the other end abuts against one end of the second valve core. The free end of the second valve core and the free end of the first plug are adjacent to each other, allowing the second valve core to move relative to the first plug. The second opening communicates with the first opening, and the elasticity of the first elastic element is greater than that of the second elastic element.

[0008] According to the technical solution provided by the present invention, the elastic force of the first elastic element is 1.2-5 times that of the elastic force of the second elastic element.

[0009] According to the technical solution provided by the present invention, a sound-absorbing block is provided at the third vent for noise reduction.

[0010] According to the technical solution provided by the present invention, a sealing ring is provided at the contact position between the first plug and the second valve core.

[0011] According to the technical solution provided by the present invention, an air guide nozzle is provided at the end of the air guide hole away from the silicone cap, and the air guide nozzle is connected to the air guide hole.

[0012] In a second aspect, the present invention provides a high-low pressure integrated pneumatic controller, comprising:

[0013] An air guide passage, wherein the air guide passage has an air inlet end; the air inlet end is used to connect to an air source;

[0014] A first valve assembly, comprising a first inflation port, a first air inlet, and a first deflation port; the first inflation port is used to connect to a first airbag body; the first air inlet is in fluid communication with the air outlet of the air guide passage.

[0015] The second valve assembly has a second inflation port, a second air inlet, and a second vent port; the second inflation port is used to connect to the second airbag body; the second air inlet is in fluid communication with the air outlet of the air guide passage; it also includes the aforementioned pressure regulating valve; the air guide nozzle of the pressure regulating valve is in fluid communication with the air guide passage.

[0016] According to the technical solution provided by the present invention, an air inlet is provided on the branch of the air guide nozzle and is in fluid communication with the air guide nozzle, and the air inlet end is in fluid communication with the air source through the air inlet nozzle.

[0017] According to the technical solution provided by the present invention, the first valve group and the second valve group are solenoid valves or shape memory alloy valve bodies.

[0018] According to the technical solution provided by the present invention, the number of pressure regulating valves is at least one, and the bearing pressure of the second elastic element of the pressure regulating valve is different.

[0019] Thirdly, the present invention provides a control system, comprising: the aforementioned high and low pressure integrated pneumatic controller and control unit;

[0020] The first valve assembly includes: a first control valve matching the number of the first airbags;

[0021] The second valve assembly includes: a second control valve matching the number of the second airbags;

[0022] The control unit is electrically connected to the first control valve, the second control valve, and the pressure regulating valve, and is used to control the opening and closing states of the first control valve, the second control valve, and the pressure regulating valve.

[0023] According to the technical solution provided by the present invention, a sealing ring is provided at the connection between the air guide nozzle and the air inlet end of the air guide passage to improve the sealing performance of the corresponding connection and avoid air leakage.

[0024] According to the technical solution provided by the present invention, the pressure regulating valve is disposed between any valves in the first valve group or the second valve group.

[0025] Fourthly, the present invention provides a control method based on the above-described control system, the control method comprising the following steps:

[0026] When the first valve group, the second valve group, and the pressure regulating valve are all in the closed state, the air pressure inside the first airbag and the second airbag remains unchanged.

[0027] When the first valve group or the second valve group needs low-pressure inflation, the control unit controls the pressure regulating valve to be in the open state, and the second valve group or the first valve group to be in the closed state. The air source guides air to the valve group that is not closed in the first valve group and the second valve group. At this time, the gas in the air guiding passage that exceeds the set pressure value of the pressure regulating valve is discharged from the third vent, so as to make the first airbag or the second airbag inflate at low pressure.

[0028] When the first valve group or the second valve group needs high-pressure inflation, the control unit controls the pressure regulating valve to be in the closed state, the second valve group or the first valve group is in the closed state, and the air source guides air to the unclosed valve group in the first valve group or the second valve group to inflate the first airbag or the second airbag with high pressure.

[0029] In summary, this invention discloses a specific structure of a pressure regulating valve. The pressure regulating valve designed in this invention specifically includes: a first frame with a coil wound around its outer periphery; a U-shaped iron is provided on the surface of the first frame, spanning the coil; the first frame is hollow inside to form a first mounting space; one end of the first frame has a vent hole, and the other end has a first opening, both of which communicate with the first mounting space; inside the first mounting space, from the side near the vent hole to the side near the first opening, a silicone cap, a first valve core, a first elastic element, and a first plug are sequentially arranged; specifically, the silicone cap is located at the end of the first valve core; the free end of the first valve core abuts against one end of the first elastic element, and the other end of the first elastic element abuts against the first plug; the first plug has a through-hole structure for gas flow; furthermore, it also includes... The device includes: a second frame, which is hollow inside to form a second installation space; a third vent is provided at one end or on one side wall of the second frame; a second opening is provided at the end of the second frame away from the third vent, and both the third vent and the second opening are connected to the second installation space; inside the second installation space, a second valve core and a second elastic element are arranged sequentially from the side closest to the second opening to the side closest to the third vent; specifically, one end of the second elastic element abuts against the bottom of the second installation space, and the other end abuts against one end of the second valve core; the free end of the second valve core and the free end of the first plug are arranged adjacent to each other, and the second valve core can move relative to the first plug; the second opening is connected to the first opening, and the elasticity of the first elastic element is greater than that of the second elastic element.

[0030] The present invention utilizes the above-mentioned pressure regulating valve structure to assist in adjusting the high-pressure / low-pressure inflation state in the gas circuit to which it is applied, so that the corresponding gas circuit can meet the different needs of high-pressure inflation or low-pressure inflation.

[0031] Furthermore, the present invention adds a pressure regulating valve to the air guiding passage. Specifically, the air guiding passage has an air inlet end for connecting to an air source; the first valve group has a first inflation port, a first air inlet, and a first vent, wherein the first inflation port is used to connect to the first airbag body, and the first air inlet is in fluid communication with the air guiding passage; the second valve group has a second inflation port, a second air inlet, and a second vent, wherein the second inflation port is used to connect to the second airbag body; the second air inlet is in fluid communication with the air guiding passage; and the air guide nozzle of the pressure regulating valve is in fluid communication with the air guiding passage.

[0032] This invention, by changing the opening and closing state of the pressure regulating valve, assists the airbag connected to the first valve group and / or the second valve group in achieving the need for simultaneous or individual high-pressure inflation or low-pressure inflation, thus enhancing its applicability and improving the user experience. Attached Figure Description

[0033] Other features, objects, and advantages of the invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings.

[0034] Figure 1 This is a schematic diagram of the structure of a high- and low-pressure integrated pneumatic controller.

[0035] Figure 2 This is a schematic cross-sectional view of the shell structure.

[0036] Figure 3 This is a cross-sectional structural diagram of a high- and low-pressure integrated pneumatic controller.

[0037] Figure 4 This is a schematic diagram of a pressure regulating valve with an air inlet in the closed state.

[0038] Figure 5 This is a schematic diagram of a pressure regulating valve with an air inlet in the open position.

[0039] Figure 6 This is a three-dimensional structural diagram of a pressure regulating valve equipped with an air inlet.

[0040] Figure 7 This is a three-dimensional structural diagram of a common pressure regulating valve.

[0041] Figure 8 This is an exploded view of a pressure regulating valve with an air inlet.

[0042] Figure 9 This is an exploded view of a typical pressure regulating valve.

[0043] Figure 10 This is a schematic diagram showing all valve groups in the closed state.

[0044] Figure 11 This is a schematic diagram of the first valve group in the inflation state.

[0045] Figure 12 This is a schematic diagram showing at least one first control valve in the first valve group in the inflated state.

[0046] Figure 13 This is a schematic diagram of the second valve assembly in the inflated state.

[0047] Figure 14 This is a schematic diagram showing at least one second control valve in the second valve group in the inflated state.

[0048] Figure 15 This is a schematic diagram showing the state when any one of the control valves in the first valve group is in the charging state, with two pressure regulating valves.

[0049] Figure 16This is a schematic diagram showing the state of any one of the control valves in the first valve group when there are multiple pressure regulating valves and the valve is in a low-pressure / high-pressure charging state.

[0050] Figure 17 This is a schematic diagram showing the pressure regulating valve located between the first valve group and the second valve group.

[0051] Figure 18 This is a schematic diagram of a standard pressure regulating valve in the closed state.

[0052] Figure 19 This is a schematic diagram of a standard pressure regulating valve in the open position.

[0053] Figure 20 This is a schematic diagram of the high and low pressure integrated pneumatic controller when there are two pressure regulating valves.

[0054] Figure 21 A cross-sectional view of a control valve with a third vent on the side wall of a pressure regulating valve equipped with an air inlet.

[0055] Figure 22 This is a schematic diagram of a pressure regulating valve with an air inlet and a third vent on its side wall when it is in the closed state.

[0056] Figure 23 This is a schematic diagram of a pressure regulating valve with an air inlet and a third vent on its side wall when it is in the open position.

[0057] Figure 24 This is a cross-sectional view of a control valve with two third vent ports.

[0058] Figure 25 This is a schematic diagram of a structure with two third vent ports and the pressure regulating valve in the closed state.

[0059] Figure 26 This is a schematic diagram of a structure with two third vent ports and the pressure regulating valve in the open position.

[0060] The diagram is labeled as follows: 1. Air passage; 2. Air source; 3. First valve group; 4. First airbag body; 5. Second valve group; 6. Second airbag body; 7. Silencing block; 8. First control valve; 9. Second control valve; 10. Pressure regulating valve; 11. First frame; 12. U-shaped iron; 13. Second frame; 14. Silicone cap; 15. First valve core; 16. First elastic element; 17. First plug; 18. Second valve core; 19. Second elastic element; 20. Air guide nozzle; 21. Air inlet nozzle; 22. Third vent; 23. Sealing ring; 24. Housing; 25. Coil; 26. Air guide hole. Detailed Implementation

[0061] The present invention 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.

[0062] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0063] Example 1

[0064] Please refer to Figure 4 , Figure 18 and Figure 22 The schematic diagram shown below illustrates a first embodiment of a pressure regulating valve provided by the present invention, comprising:

[0065] The first frame 11 has a coil 25 wound around its outer periphery. The surface of the first frame 11 is provided with a U-shaped iron 12, which spans over the coil 25. The U-shaped iron 12 is used to enhance the magnetism.

[0066] The first frame 11 is hollow inside, forming a first installation space. One end of the first frame 11 has a vent hole 26, and the other end has a first opening. Both the vent hole 26 and the first opening are connected to the first installation space. Inside the first installation space, from the side near the vent hole 26 to the side near the first opening, a silicone cap 14, a first valve core 15, a first elastic element 16, and a first plug 17 are arranged in sequence. The silicone cap 14 is located at the end of the first valve core 15 and is used to control the opening and closing of the vent hole 26. The free end of the first valve core 15 abuts against one end of the first elastic element 16, and the other end of the first elastic element 16 abuts against the first plug 17. The first elastic element 16 provides a force for the silicone cap 14 and the first valve core 15 to reset. The first plug 17 has a through-hole structure for gas flow.

[0067] The second frame 13 is hollow inside to form a second installation space. A third vent 22 is provided at one end or on its side wall, and a second opening is provided at the end away from the third vent 22. Both the third vent 22 and the second opening are connected to the second installation space. Inside the second installation space, a second valve core 18 and a second elastic element 19 are arranged sequentially from the side closest to the second opening to the side closest to the third vent 22. One end of the second elastic element 19 abuts against the bottom of the second installation space, and the other end abuts against one end of the second valve core 18. The free end of the second valve core 18 and the free end of the first plug 17 are arranged adjacent to each other, and the second valve core 18 can move relative to the first plug 17. The second opening is connected to the first opening, and the elasticity of the first elastic element 16 is greater than that of the second elastic element 19.

[0068] Here, the elastic force of the first elastic element 16 is 1.2-5 times that of the second elastic element 19; and the elastic force of the first elastic element 16 is at least 1.2 times that of the second elastic element 19. If it is less than 1.2 times, the pressure regulating valve 10 itself is ineffective and cannot achieve the pressure regulating function. If it exceeds 5 times, the pressure regulating valve 10 has a pressure regulating function, but excessive elastic force will not make the pressure regulating effect of the pressure regulating valve 10 change to a better trend. Therefore, a range of 1.2-5 times is sufficient to meet the usage requirements of the pressure regulating valve 10. Here, the type of the first elastic element 16 and the second elastic element 19 is, for example, a spring.

[0069] Furthermore, such as Figure 4 and Figure 5 As shown, a sound-absorbing block 7 is provided at the third vent 22 to reduce noise in the airflow at the third vent 22.

[0070] Furthermore, the air inlet 21 is located on the side of the first frame 11 away from the second frame 13, and the air inlet 21 communicates with the first mounting space; the end of the air inlet 21 away from the first frame 11 is the third inflation port; here, as... Figure 6 As shown, the air intake 21 and the first frame 11 are integrally formed structures, and the corresponding exploded view of the components is as follows. Figure 8 As shown, at this time, the air inlet 21 is used to directly connect to the air source 2.

[0071] Furthermore, a sealing ring 23 is provided at the connection between the air nozzle 20 and the air inlet end of the air passage 1 to improve the sealing performance of the corresponding connection and prevent air leakage. Also, a sealing ring 23 is provided at the contact position between the first plug 17 and the second valve core 18. When the gas reaches the required low pressure and the second valve core 18 is closed, and the pressure regulating valve 10 is open, this prevents gas in the first installation space from overflowing from the second valve core 18. Here, the sealing ring 23 is, for example, an O-ring.

[0072] Example 2

[0073] like Figure 1 As shown, the present invention provides a high and low pressure integrated pneumatic controller, comprising:

[0074] Air guide passage 1, which has an air inlet; the air inlet is connected to an air source 2; here, as... Figure 2 As shown, it also includes: a housing 24, in which an air passage 1 is formed by injection molding; and the type of air source 2, such as an air pump or a vehicle body air source.

[0075] The first valve group 3 has a first inflation port, a first air inlet and a first deflation port; the first inflation port is connected to a first airbag body 4; the first air inlet is in fluid communication with the air guide passage 1.

[0076] The second valve group 5 has a second inflation port, a second air inlet and a second vent port; the second inflation port is connected to the second airbag body 6; the second air inlet is in fluid communication with the air guide passage 1.

[0077] Here, the first valve group 3 and the second valve group 5 are of the type, for example, solenoid valves or shape memory alloy valve bodies.

[0078] It also includes: the pressure regulating valve 10 described in Embodiment 1, and the air inlet 20 of the pressure regulating valve 10 is in fluid communication with the air passage 1. Here, the number of pressure regulating valves 10 is at least one. Furthermore, the pressure regulating valve 10 is disposed between any valve in the first valve group and the second valve group; such as... Figure 1 As shown, the pressure regulating valve 10 can be located on one side of the air passage 1, or as... Figure 17 As shown, it is positioned between the first valve group 3 and the second valve group 5. Figure 20 There are two pressure regulating valves 10, and the two pressure regulating valves 10 are arranged in parallel on one side of the air guide passage 1. Figure 21 for Figure 20 The cross-sectional view provides a clear view of the internal structure of the pressure regulating valve 10.

[0079] Figure 24 This is a cross-sectional view showing that the second valve core 18 has a third vent port 22 on both its side wall and free end. That is, the pressure regulating valve 10 has two third vent ports 22, enabling rapid venting and improving compatibility. Figure 25 As shown, the pressure regulating valve 10 is in the closed state, and the silicone cap 14 seals the connection between the first installation space and the air inlet 21. If the air source 2 is connected to the air inlet 21 and is in the open state, the gas can only enter the air guiding passage 1 through the air inlet 21 and the air guide nozzle 20, and then the air guiding passage 1 will deliver the gas to the corresponding airbag. Figure 26 As shown, with the pressure regulating valve 10 open, the air inlet 21 and the first mounting space are in a conductive state. If the air source 2 is also open, a portion of the gas enters the air guide passage 1 through the air inlet 21, and a portion exits through both sides of the first mounting space and through the first plug 17 from one side of the third vent 22. Here, the amount of gas released is related to the set pressure value of the pressure regulating valve 10 and the gas pressure in the air guide passage 1. If the gas pressure inside the air guide passage 1 is greater than the set pressure value of the pressure regulating valve 10, the excess gas is quickly discharged through the two third vents 22. Further, as... Figure 3 As shown, the end of the air vent 26 away from the silicone cap 14 is provided with an air nozzle 20, and the air nozzle 20 is connected to the air vent 26 for introducing gas into the first installation space.

[0080] Figure 17 The pressure regulating valve 10 in the middle is Figure 18As shown in Figure 19, the gas source 2 is directly connected to the gas guide passage 1, delivering gas to each valve. When the first valve core 15 of the pressure regulating valve 10 is in the open state, as shown in Figure 19... Figure 19 As shown, when the gas pressure reaches the open state of the second valve core 18, the gas can enter the pressure regulating valve 10 through the air guide nozzle 20 and then be discharged through the first mounting space and the third vent port 22. If the gas pressure does not reach the open state of the second valve core 18, the second valve core 18 will not open, and even if the gas enters the pressure regulating valve 10 through the air guide nozzle 20 and then passes through the first mounting space, it will not be discharged from the third vent port 22. When the first valve core 15 of the pressure regulating valve 10 is in the closed state, the air guide hole 26 is blocked by the silicone cap 14, and the gas will not enter the first mounting space of the pressure regulating valve 10 from the air guide nozzle 20.

[0081] Example 3

[0082] This invention provides a control system, comprising: the high and low pressure integrated pneumatic controller and control unit described in Example 2;

[0083] The first valve group 3 includes: a first control valve 8 matching the number of first airbag bodies 4;

[0084] The second valve assembly 5 includes: a second control valve 9 matching the number of second airbag bodies 6;

[0085] The control unit is electrically connected to the first control valve 8, the second control valve 9, and the pressure regulating valve 10. The control unit is used to control the opening and closing states of the first control valve 8, the second control valve 9, and the pressure regulating valve 10.

[0086] Here, the type of control unit is, for example, an electronic control unit (ECU).

[0087] Furthermore, the first valve assembly 3 includes a first control valve 8 matching the number of first airbags 4; a first inflation port is the inflation port of the first control valve 8, a first air inlet is the air inlet of the first control valve 8, and a first vent port is the vent port of the first control valve 8. The second valve assembly 5 includes a second control valve 9 matching the number of second airbags 6; a second inflation port is the inflation port of the second control valve 9, a second air inlet is the air inlet of the second control valve 9, and a second vent port is the vent port of the second control valve 9.

[0088] The first control valve 8 and the second control valve 9 are, for example, solenoid valves or shape memory alloy valve bodies. The first airbag body 4 is, for example, a pressure-retaining airbag body, and the second airbag body 6 is, for example, a pressure-free airbag body. The pressure-retaining airbag body includes at least: a lumbar support airbag body, a leg support airbag body, and a headrest support airbag body; the pressure-free airbag body includes at least: a massage airbag body.

[0089] Example 4

[0090] The present invention also provides a control method based on the control system described in Embodiment 3, the control method comprising the following steps:

[0091] When the first valve group 3, the second valve group 5 and the pressure regulating valve 10 are all in the closed state, the air pressure in the first airbag 4 and the second airbag 6 remains unchanged.

[0092] When the first valve group 3 or the second valve group 5 needs low-pressure inflation, the control unit controls the pressure regulating valve 10 to be in the open state, and the second valve group 5 or the first valve group 3 to be in the closed state. The air source 2 guides air to the valve group that is not closed in the first valve group 3 and the second valve group 5. At this time, the gas in the air guiding passage 1 that exceeds the set pressure value of the pressure regulating valve 10 is discharged from the third vent 22 so that the first airbag 4 or the second airbag 6 is inflated at low pressure.

[0093] When the first valve group 3 or the second valve group 5 needs high-pressure inflation, the control unit controls the pressure regulating valve 10 to be in the closed state, and one of the valve groups of the second valve group 5 and the first valve group 3 is in the closed state. The air source 2 guides air to the unclosed valve group of the first valve group 3 and the second valve group 5 to inflate the first airbag 4 or the second airbag 6 under high pressure.

[0094] Structures requiring high-pressure inflation include, for example, car side wing support systems, while structures requiring low-pressure inflation include, for example, car massage lumbar support systems.

[0095] Specifically, Figure 10 This indicates that the first valve group 3 and the second valve group 5 are both in the closed state. At this time, the gas inside the first airbag 4 and the second airbag 6 remains unchanged.

[0096] like Figure 11 As shown, the first valve group 3 is in the open state, and the second valve group 5 is in the closed state. When all the first airbags 4 require high-pressure inflation, all the first control valves 8 are in the open state, the pressure regulating valve 10 is in the closed state, the air source 2 is started, and the gas enters the corresponding first airbag 4 through the air guide passage 1 and the first control valve 8, realizing the high-pressure inflation requirement of all the first airbags 4 at the same time. When all the first airbags 4 require low-pressure inflation, all the first control valves 8 and the control valve 10 are in the open state, the air source 2 is started, and when the air pressure of the air source 2 is higher than the pressure of the second elastic element 19 of the pressure regulating valve 10, the gas is depressurized through the air guide passage 1 and the pressure regulating valve 10. When the pressure of the air guide passage 1 is lower than the pressure of the second elastic element 19, the second valve core 18 is automatically closed, so that the pressurized gas enters the corresponding first airbag 4 through the air guide passage 1 and the first control valve 8, realizing the low-pressure inflation requirement of all the first airbags 4 at the same time.

[0097] like Figure 12As shown, when any of the first airbags 4 in the first valve group 3 needs high-pressure or low-pressure inflation, the second valve group 5 and the pressure regulating valve 10 are both closed, and the corresponding first control valve 8 is open. The gas source 2 is started, and the gas enters the first airbag 4 through the gas guide passage 1 and the first control valve 8. By controlling the opening and closing state of the pressure regulating valve 10, the high-pressure or low-pressure inflation requirement of a certain first airbag 4 can be achieved.

[0098] like Figure 13 As shown, when the second valve group 5 is in the open state and the first valve group 3 is in the closed state, when all the second airbags 6 need to be inflated, all the second control valves 9 are in the open state and the control valve 10 is in the closed state. The air source 2 is started, and the gas enters the corresponding second airbag 6 through the air guide passage 1 and the second control valve 9, so as to realize the high-pressure inflation requirement of all the second airbags 6 at the same time. When all the second airbags 6 need to be inflated at low pressure, all the second control valves 9 and the pressure regulating valve 10 are in the open state. The air source 2 is started. When the air pressure of the air source 2 is higher than the pressure of the second elastic element 19 of the control valve 10, the gas is depressurized through the air guide passage 1 and the pressure regulating valve 10. When the pressure of the air guide passage 1 is lower than the pressure of the second elastic element 19, the second valve core 18 is automatically closed, so that the pressurized gas enters the corresponding second airbag 6 through the air guide passage 1 and the second control valve 9, so as to realize the low-pressure inflation requirement of all the second airbags 6 at the same time.

[0099] like Figure 14 As shown, when any of the second airbags 6 in the second valve group 5 needs high-pressure or low-pressure inflation, the first valve group 3 is in the closed state, the corresponding second control valve 9 is in the open state, the gas source 2 is started, and the gas enters the second airbag 6 through the gas guide passage 1 and the second control valve 9. The high-pressure or low-pressure inflation requirement of a certain second airbag 6 is achieved by controlling the opening and closing state of the pressure regulating valve 10.

[0100] The above Figures 10-14 This explanation mainly focuses on the high-pressure / low-pressure inflation status of the first valve group 3 and / or the second valve group 5 when there is only one pressure regulating valve 10.

[0101] Figure 15This indicates that when there are two pressure regulating valves 10, the bearing pressure of the second elastic element 19 of the two pressure regulating valves 10 is different. Assume the bearing pressure of the second elastic element 19 of the first pressure regulating valve 10 is the intermediate pressure, and the bearing pressure of the second elastic element 19 of the second pressure regulating valve 10 is the low pressure, with the intermediate pressure being greater than the low pressure. If any control valve of the first valve group 3 and / or the second valve group 5 requires high-pressure inflation, both pressure regulating valves 10 are closed to inflate the air bag at high pressure. If any control valve of the first valve group 3 and / or the second valve group 5 requires intermediate-pressure inflation, the first pressure regulating valve 10 is opened and the second pressure regulating valve 10 is closed to inflate the air bag at intermediate pressure. If any control valve of the first valve group 3 and / or the second valve group 5 requires low-pressure inflation, the second pressure regulating valve 10 is opened, and the first pressure regulating valve 10 can be closed or opened to inflate the air bag at low pressure. Since the elastic force of the second elastic element 19 of the first pressure regulating valve 10 is greater than that of the second elastic element 19 of the second control valve 10, when the air pressure is greater than the intermediate pressure, the second valve core 18 of both the first and second pressure regulating valves 10 can be in the open state, which can accelerate pressure relief. When the air pressure is greater than the low pressure and less than the intermediate pressure, the second valve core 18 of the first pressure regulating valve 10 is in the closed state, and the second valve core 18 of the second pressure regulating valve 10 is in the open state, which can relieve pressure through the second pressure regulating valve. When the air pressure is less than the low pressure, the second valve core 18 of the second pressure regulating valve 10 is also in the closed state. Therefore, the opening and closing of the first control valve 10 does not affect the low-pressure inflation.

[0102] Figure 16 This indicates that when there are three or more pressure regulating valves, the pressure bearing capacity of the multiple pressure regulating valves 10 is different. The control valves 10 with different pressure bearing capacities are adjusted according to the different pressures required to achieve the appropriate pressure to assist any control valve of the first valve group 3 and / or the second valve group 5 in performing different pressure inflation.

[0103] As can be seen from the above example, the pressure regulating valve 10 can assist all the airbags connected to the first valve group 3 and / or the second valve group 5 to be simultaneously or individually inflated under high pressure or low pressure.

[0104] The above description is merely a preferred embodiment of the present invention and an explanation of the technical principles employed. Those skilled in the art should understand that the scope of the invention is not limited to the specific combination of the above-described technical features, but also includes other technical solutions formed by arbitrary combinations of the above-described technical features or their equivalents without departing from the inventive concept. For example, technical solutions formed by substituting the above-described features with (but not limited to) technical features with similar functions disclosed in this invention.

Claims

1. A pressure regulating valve, characterized in that, include: A first frame (11) is formed by winding a coil (25) around its outer periphery. A U-shaped iron (12) is provided on the surface of the first frame (11) and spans the coil (25). The first frame (11) is hollow inside to form a first installation space. A vent hole (26) is provided at one end of the first frame (11), and a first opening is provided at the other end. Both the vent hole (26) and the first opening are connected to the first installation space. Inside the first installation space, from the side near the vent hole (26) to the side near the first opening, a silicone cap (14), a first valve core (15), a first elastic element (16), and a first plug (17) are arranged in sequence. The silicone cap (14) is located at the end of the first valve core (15). The free end of the first valve core (15) abuts against one end of the first elastic element (16), and the other end of the first elastic element (16) abuts against the first plug (17). The first plug (17) is a through structure for gas flow. The second frame (13) has a hollow interior forming a second installation space. A third vent (22) is provided at one end or on one side wall of the second frame (13). A second opening is provided at the end of the second frame (13) away from the third vent (22). Both the third vent (22) and the second opening are connected to the second installation space. A second valve core (18) and a second elastic element (19) are arranged sequentially from the side closest to the second opening to the side closest to the third vent (22) inside the second installation space. One end of the second elastic element (19) abuts against the bottom of the second installation space, and the other end abuts against one end of the second valve core (18). The free end of the second valve core (18) and the free end of the first plug (17) are arranged adjacent to each other. The second valve core (18) can move relative to the first plug (17). The second opening is connected to the first opening, and the elasticity of the first elastic element (16) is greater than that of the second elastic element (19).

2. A pressure regulating valve according to claim 1, characterized in that, The elastic force of the first elastic element (16) is 1.2-5 times that of the second elastic element (19).

3. A pressure regulating valve according to claim 1, characterized in that, A sound-absorbing block (7) is provided at the third vent (22) for sound absorption and noise reduction.

4. A pressure regulating valve according to claim 1, characterized in that, The air guide hole (26) is provided with an air guide nozzle (20) at one end away from the silicone cap (14), and the air guide nozzle (20) is in fluid communication with the air guide hole (26).

5. A high-low pressure integrated pneumatic controller, characterized in that, include: An air guide passage (1) has an air inlet end; The air inlet is used to connect to the air source (2); The first valve group (3) has a first inflation port, a first air inlet and a first deflation port; the first inflation port is used to connect to the first airbag body (4); the first air inlet is in fluid communication with the air guiding passage (1); The second valve assembly (5) has a second inflation port, a second air inlet and a second vent; the second inflation port is used to connect to the second airbag body (6); the second air inlet is in fluid communication with the air guide passage (1); and further includes: a pressure regulating valve (10) according to any one of claims 1-4; the air guide nozzle (20) of the pressure regulating valve (10) is in fluid communication with the air guide passage (1).

6. The high and low pressure integrated pneumatic controller according to claim 5, characterized in that, An air inlet (21) is provided on a branch of the air guide (20) and is in fluid communication with the air guide (20), and the air inlet end is in fluid communication with the air source (2) through the air inlet (21).

7. A high-low pressure integrated pneumatic controller according to claim 5, characterized in that, The first valve group (3) and the second valve group (5) are solenoid valves or shape memory alloy valve bodies.

8. A high-low pressure integrated pneumatic controller according to claim 7, characterized in that, The number of pressure regulating valves (10) is at least one, and the second elastic element (19) of the pressure regulating valves (10) has a different bearing pressure.

9. A control system, characterized in that, include: The high- and low-pressure integrated pneumatic controller and control unit according to any one of claims 5-8; The first valve group (3) includes: a first control valve (8) matching the number of the first airbag bodies (4); The second valve assembly (5) includes: a second control valve (9) matching the number of the second airbag bodies (6); The control unit is electrically connected to the first control valve (8), the second control valve (9) and the pressure regulating valve (10), and the control unit is used to control the opening and closing states of the first control valve (8), the second control valve (9) and the pressure regulating valve (10).

10. A control method, implemented based on the control system of claim 9, characterized in that, The control method includes the following steps: When the first valve group (3), the second valve group (5) and the pressure regulating valve (10) are all in the closed state, the air pressure in the first airbag (4) and the second airbag (6) remains unchanged; When the first valve group (3) or the second valve group (5) needs to be inflated at low pressure, the control unit controls the pressure regulating valve (10) to be in the open state, and the second valve group (5) or the first valve group (3) to be in the closed state. The air source (2) guides air to the valve group that is not closed in the first valve group (3) and the second valve group (5). At this time, the gas in the air guiding passage (1) that exceeds the set pressure value of the pressure regulating valve (10) is discharged from the third vent (22) so that the first airbag (4) or the second airbag (6) is inflated at low pressure. When the first valve group (3) or the second valve group (5) needs high-pressure inflation, the control unit controls the pressure regulating valve (10) to be closed, the second valve group (5) or the first valve group (3) to be closed, and the gas source (2) guides gas to the unclosed valve group in the first valve group (3) or the second valve group (5). The gas enters the first airbag (4) through the unclosed valve group in the first valve group (3) through the gas guiding passage (1) or enters the second airbag (6) through the unclosed valve group in the second valve group (5) through the gas guiding passage (1), thereby inflating the first airbag (4) or the second airbag (6) under high pressure.

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