CN221257785U - Pressure regulating valve, high-low pressure integrated pneumatic controller and control system - Google Patents

Abstract

The application provides a pressure regulating valve, a high-low pressure integrated pneumatic controller and a control system, wherein the pressure regulating valve comprises a first shell, a pressure regulating air inlet channel is arranged in the first shell, the pressure regulating air inlet channel comprises a pressure regulating air inlet hole, a first cavity and at least one exhaust hole communicated with the ambient atmosphere, and the pressure regulating air inlet hole is provided with a first tiny hole structure; the switch component is arranged in the first cavity, and in a first state, the switch component blocks the pressure regulating air inlet hole, and the air pressure value in the pressure regulating air inlet hole is maintained at a first air pressure threshold value; in the second state, the switch component opens the pressure regulating air inlet hole, part of air with the air pressure value higher than the second air pressure threshold value in the pressure regulating air inlet hole enters from the first tiny hole structure and flows through the first cavity, and is discharged to the ambient atmosphere from the exhaust hole communicated with the first cavity, so that the air pressure in the pressure regulating air inlet hole is reduced and maintained at the second air pressure threshold value, and therefore the air source meets the requirement of high-low pressure inflation, and the air source is low in cost and easy to operate.

Description

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

Technical Field

The application relates to the technical field of automobiles, in particular to a pressure regulating valve, a high-low pressure integrated pneumatic controller and a control system.

Background

Most of the existing pneumatic controllers control the pressure-maintaining air bag body and the pressure-maintaining air bag body not required through electromagnetic valves, the same air source can only realize isobaric air inflation when inflated, different people have different demands, the pressure-maintaining air bag body and the pressure-maintaining air bag body not required can be inflated at high pressure or low pressure, and the requirements of users on silence and comfort of vehicles are increasingly strict.

In the prior art, the isobaric inflation mode obviously cannot meet the personalized requirements, and high-pressure gas easily generates noise when flowing through a valve body in the inflation process, and the disadvantages are not friendly to the vehicle requirements of users.

Disclosure of Invention

In view of the foregoing drawbacks or shortcomings of the prior art, the present application is directed to a pressure regulating valve, a high and low pressure integrated pneumatic controller, and a control system.

In a first aspect, the present application provides a pressure regulating valve for a seat pneumatic adjustment system, comprising:

The pressure regulating air inlet channel sequentially comprises a pressure regulating air inlet hole, a first cavity and at least one exhaust hole communicated with the ambient atmosphere along the axial direction of the first shell; the gas pressure value in the pressure regulating air inlet hole can be a first gas pressure threshold value or a second gas pressure threshold value; the first air pressure threshold is greater than the second air pressure threshold;

the pressure regulating air inlet hole is provided with a first tiny hole structure;

The switch assembly is arranged in the first cavity and is provided with a first state and a second state; in a first state, the switch component blocks the pressure regulating air inlet hole, and the air pressure value in the pressure regulating air inlet hole is maintained at the first air pressure threshold value; in the second state, the switch assembly opens the pressure-regulating air inlet hole, so that the pressure-regulating air inlet hole is communicated with the first chamber and the exhaust hole, part of air with the air pressure value higher than the second air pressure threshold value in the pressure-regulating air inlet hole enters the first chamber through the first tiny hole structure and flows through the first chamber, and is discharged to the ambient atmosphere through the exhaust hole, so that the air pressure in the pressure-regulating air inlet hole is reduced and maintained at the second air pressure threshold value.

According to the technical scheme provided by the embodiment of the application, the first small hole structure is arranged at one end of the pressure regulating air inlet hole far away from the switch assembly.

According to the technical scheme provided by the embodiment of the application, the cross section area of the first small holes is 0.01 square millimeter-0.5 square millimeter.

According to the technical scheme provided by the embodiment of the application, the opening of the pressure regulating air inlet hole close to the switch assembly is a first opening; the aperture of the first tiny hole structure is smaller than the first opening, the end face area of the switch assembly, which is close to the first opening, is larger than or equal to the opening area of the first opening, the flow passage area between the first opening and the first tiny hole along the radial direction of the first shell is in smooth transition, and the pressure regulating air inlet hole forms an air inlet end buffer cavity.

According to the technical scheme provided by the embodiment of the application, the side, away from the switch assembly, of the first shell is provided with a second cavity communicated with the exhaust hole, and a silencing block is arranged in the second cavity.

According to the technical scheme provided by the embodiment of the application, the side, away from the first chamber, of the pressure regulating air inlet hole is communicated with a first air passage for inputting air to the pressure regulating air inlet hole, and an air guide passage communicated with the first air passage, and the side, away from the first air passage, of the air guide passage is provided with an air guide opening.

According to the technical scheme provided by the embodiment of the application, along the direction of the first opening towards the exhaust hole, the switch assembly sequentially comprises a silica gel cap, a first valve core and a return elastic element; the silica gel caps are arranged at two ends of the first valve core; one end of the first valve core, which is far away from the pressure regulating air inlet hole, is abutted with one end of the return elastic element, and the other end of the return elastic element is abutted with the first plug; the first plug is of a medium-pass structure and is used for gas circulation.

According to the technical scheme provided by the embodiment of the application, the space for accommodating the return elastic element is formed into the exhaust end buffer cavity.

In a second aspect, the present application provides a high and low pressure integrated pneumatic controller comprising:

The air guide passage is an air passage for communicating each valve body and the pressure regulating valve;

At least one first pneumatic valve block group, wherein the first pneumatic valve block group is provided with a first charging port, a first air inlet and a first air discharging port; the first inflation inlet is used for connecting a first air bag body; the first air inlet is communicated with the air guide passage;

And/or the number of the groups of groups,

At least one second pneumatic valve block group having a second inflation port, a second air inlet port, and a second bleed port; the second inflation port is used for connecting a second air bag body; the second air inlet is communicated with the air guide passage;

also included is a pressure regulating valve as described above; the air guide port of the pressure regulating valve is communicated with the air guide passage;

The controller shell is integrated with the air guide passage, the first pneumatic valve group, the second pneumatic valve group and the pressure regulating valve, and an air passage communicated with each valve body and the pressure regulating valve is also formed in the controller shell.

In a third aspect, the present application provides a control system comprising: the high-low pressure integrated pneumatic controller and the pneumatic control unit, the air source, the first air bag body and the second air bag body are arranged in the same plane;

the first air valve group includes: a first pneumatic control valve matched to the number of first air bags;

And/or the number of the groups of groups,

The second pneumatic valve group includes: a second pneumatic control valve matched to the number of the second air bag bodies;

The pneumatic control unit is electrically connected with the first pneumatic control valve and/or the second pneumatic control valve and the pressure regulating valve, and the control unit is used for controlling the opening and closing states of the first pneumatic control valve, the second pneumatic control valve and the pressure regulating valve.

Compared with the prior art, the application has the beneficial effects that: the pressure regulating valve is arranged on the conducting gas channel, the gas pressure value flowing in the conducting gas channel is maintained at a first gas pressure threshold value by switching between the first state and the second state through the control switch assembly, or part of relatively high-pressure gas exceeding the second gas pressure threshold value enters the first cavity of the regulating valve from the first tiny hole structure and is discharged to the ambient atmosphere from the exhaust hole after flowing through the first cavity, so that the gas pressure value flowing in the conducting gas channel is maintained at a second gas pressure threshold value, the pressure regulating effect is achieved, the requirement of high-pressure and low-pressure gas filling is finally met by a gas source.

Drawings

FIG. 1 is a schematic cross-sectional view of a pressure regulating valve (integrated with an air inlet nozzle, closed state) according to an embodiment of the present application;

FIG. 2 is a schematic cross-sectional view of a pressure regulating valve (separated from an air inlet nozzle, closed state) according to an embodiment of the present application;

FIG. 3 is a schematic diagram of the explosion structure of FIG. 1 according to an embodiment of the present application;

FIG. 4 is a schematic diagram of the explosion structure of FIG. 2 according to an embodiment of the present application;

FIG. 5 is a schematic diagram of the structure of the pressure regulating valve in the open state when the pressure regulating air inlet hole is tapered;

Fig. 6 is a schematic structural diagram of an open state of a pressure regulating valve when a pressure regulating air inlet hole provided in an embodiment of the present application is circular;

FIG. 7 is a schematic diagram of a structure of a total buffer chamber according to an embodiment of the present application;

FIG. 8 is a schematic diagram of a driving mechanism of a first valve body according to an embodiment of the present application;

FIG. 9 is a schematic diagram of the internal structure of a high-low pressure integrated pneumatic controller (a pressure regulating valve and an air inlet nozzle are integrated) according to an embodiment of the present application;

FIG. 10 is a schematic diagram of a high-low pressure integrated pneumatic controller according to an embodiment of the present application;

FIG. 11 is a schematic diagram of the internal structure of a high-low pressure integrated air-operated controller (a pressure regulating valve and separated from an air inlet nozzle) according to an embodiment of the present application;

FIG. 12 is a schematic diagram of the internal structure of a high-low pressure integrated air-operated controller (two pressure regulating valves, one of which is integrated with an air inlet nozzle, and the other of which is separated from the air inlet nozzle) according to an embodiment of the present application;

Fig. 13 is a schematic structural view of a pressure regulating valve (integrated with an air inlet nozzle) according to an embodiment of the present application;

Fig. 14 is a schematic structural view of a pressure regulating valve (separated from an air inlet nozzle) according to an embodiment of the present application;

Fig. 15 is a schematic structural diagram of a control system (two pressure regulating valves and any valve group is in a high-pressure inflation state) according to an embodiment of the present application;

fig. 16 is a schematic structural diagram of a control system (a plurality of pressure regulating valves and any valve group is in a high-pressure inflation state) according to an embodiment of the present application;

Fig. 17 is a schematic structural diagram of a control system (initial state) according to an embodiment of the present application;

FIG. 18 is a schematic diagram of a control system (a first valve bank is in a high-pressure inflated state) according to an embodiment of the present application;

FIG. 19 is a schematic diagram of a control system (any first pneumatic control valve in the first pneumatic valve set is in a high-pressure inflation state) according to an embodiment of the present application;

FIG. 20 is a schematic diagram of a control system (a first valve bank is in a low-pressure inflated state) according to an embodiment of the present application;

FIG. 21 is a schematic diagram of a control system (any first pneumatic control valve in the first pneumatic valve set is in a low-pressure inflation state) according to an embodiment of the present application;

FIG. 22 is a schematic diagram of a control system (the second pneumatic valve set is in a high-pressure inflated state) according to an embodiment of the present application;

FIG. 23 is a schematic diagram of a control system (any second pneumatic control valve in the second pneumatic valve set is in a high-pressure inflation state) according to an embodiment of the present application;

FIG. 24 is a schematic diagram of a control system (the second pneumatic valve set is in a low-pressure inflated state) according to an embodiment of the present application;

FIG. 25 is a schematic diagram of a control system (any second pneumatic control valve in the second pneumatic valve set is in a low-pressure inflated state) according to an embodiment of the present application;

FIG. 26 is a schematic diagram of an open state of a pressure regulating valve when a pressure regulating air inlet hole provided in an embodiment of the present application is circular;

Fig. 27 is a schematic cross-sectional view of a pressure regulating valve (integrated with an air inlet nozzle, open state) according to an embodiment of the present application.

The text labels in the figures are expressed as:

1. A first housing; 2. a first air path; 3. an air guide path; 4. pressure regulating air inlet holes; 41. a first fine hole structure; 42. a first opening; 5. a first chamber; 6. a first valve core; 7. a return elastic element; 8. an exhaust hole; 9. a second cavity; 10. a sound attenuation block; 11. pressure regulating air inlet channel; 12. an electromagnetic coil; 13. u-shaped iron; 14. an air inlet nozzle; 15. a silica gel cap; 16. a second opening; 17. a first plug; 18. an exhaust end buffer cavity; 181. the air inlet end buffer cavity; 182. a middle section buffer cavity; 19. a first electrode; 20. a second electrode; 21. a circuit board; 22. a memory alloy wire; 23. a first pneumatic valve block; 231. a first pneumatic control valve; 24. the second pneumatic valve group; 241. a second pneumatic control valve; 25. a pressure regulating valve; 26. a controller housing; 27. an air guide passage; 28. a first balloon; 29. a second air bag body; 30. and (5) an air source.

Detailed Description

The application is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the application and are not limiting of the application. It should be noted that, for convenience of description, only the portions related to the application are shown in the drawings.

It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The application will be described in detail below with reference to the drawings in connection with embodiments.

Example 1

As mentioned in the background art, the present application proposes a pressure regulating valve for a pneumatic seat adjusting system, comprising:

The pressure regulating air inlet channel 11 is formed in the first shell 1, and the pressure regulating air inlet channel 11 sequentially comprises a pressure regulating air inlet hole 4, a first cavity 5 and at least one exhaust hole 8 communicated with the ambient atmosphere along the axial direction of the first shell 1; the gas pressure value in the pressure regulating gas inlet hole 4 can be a first gas pressure threshold value or a second gas pressure threshold value; the first air pressure threshold is greater than the second air pressure threshold;

The pressure regulating air inlet hole 4 is provided with a first tiny hole structure 41;

A switch assembly disposed within the first chamber 5, the switch assembly having a first state and a second state; in a first state, the switch component blocks the pressure regulating air inlet hole 4, and the air pressure value in the pressure regulating air inlet hole 4 is maintained at the first air pressure threshold value; in the second state, the switch assembly opens the pressure-regulating air inlet hole 4, so that the pressure-regulating air inlet hole 4 is communicated with the first chamber 5 and the exhaust hole 8, part of the air with the air pressure value higher than the second air pressure threshold in the pressure-regulating air inlet hole 4 enters the first chamber 5 through the first tiny hole structure 41, flows through the first chamber 5, is discharged to the ambient atmosphere through the exhaust hole 8, and the air pressure in the pressure-regulating air inlet hole 4 is reduced and maintained at the second air pressure threshold.

Specifically, when the switch assembly is in the first state, the switch assembly blocks the opening of the pressure-regulating air inlet hole 4 near the switch assembly side, thereby cutting off the communication condition between the pressure-regulating air inlet hole 4 and the first chamber 5 and between the pressure-regulating air inlet hole 4 and the air outlet hole 8.

Specifically, the first air pressure threshold may be between 50Kpa and 300Kpa, where the air pressure value is a relative air pressure value relative to 1 standard atmosphere.

Specifically, the first chamber 5 and the exhaust holes 8 are always in communication, and the number of the exhaust holes 8 may be one or more.

Specifically, the amount of gas flowing into the pressure-regulating intake passage 11 is determined by the size of the first fine hole structure 41 of the pressure-regulating intake hole 4, that is, the pressure-regulating effect to be achieved by the pressure-regulating intake passage 11 should be related to the size of the first fine hole structure 41, and thus the gas pressure of the gas flowing through the gas guide passage 27 is determined by the pore diameter of the first fine hole structure 41.

Specifically, the size of the first fine hole structure 41 of the pressure-regulating intake hole 4 is related to the air pressure value (difference of the first air pressure threshold value minus the second air pressure threshold value) of the desired exhaust air, the size of the first fine hole structure 41 is determined before the first housing 1 is manufactured, and the first housing 1 having the first fine hole structure 41 of different sizes is manufactured by different molds, and when there are different high and low pressure inflation demands, it can be achieved by replacing the pressure regulating valve 25 having the first fine hole structure 41 of different sizes.

Specifically, the pressure regulating valve 25 has two states, namely an open state and a closed state, as shown in fig. 5 and 27, when the pressure regulating valve is opened, the second state corresponds to the second state of the switch assembly, as shown in fig. 1, when the pressure regulating valve is closed, the pressure regulating valve 25 is closed when the air using unit with high-pressure (air pressure is a first air pressure threshold) air charging requirement is required to be charged, the switch assembly is in the first state, the first tiny hole structure 41 is not communicated with the first chamber 5, and at the moment, the pressure regulating air inlet hole 4 is provided with air with the air pressure value being the first air pressure threshold, so as to further realize the high-pressure air charging requirement. When the air using unit with low pressure (the air pressure is the second air pressure threshold value) needs to be inflated, the pressure regulating valve 25 is opened, the switch assembly is in the second state, the first tiny hole structure 41 is communicated with the first chamber 5, the air with relatively high pressure (greater than the second air pressure threshold value) in the pressure regulating air inlet hole 4 enters the first chamber 5 through the first tiny hole 41 and flows through the first chamber 5, and finally is discharged to the ambient atmosphere through the air outlet hole 8, so that the air with the air pressure value being the second air pressure threshold value in the pressure regulating air inlet hole is further inflated to realize the low air pressure inflation requirement.

In an alternative embodiment, the first fine hole structure 41 is disposed at an end of the pressure-regulating air inlet hole 4 away from the switch assembly.

In an alternative embodiment, the first fine hole structures 41 have a cross-sectional area of 0.01 mm-0.5 mm.

In particular, since the first fine hole structure 41 has a very small size, the gas flowing out is very limited and is far smaller than the gas generated by the gas source, it is possible to achieve a reduction in the regulated gas pressure and to maintain the regulated gas pressure at the second gas pressure threshold; when the switch assembly is in the first state (closed), the first small hole structure 41 can play a role of regulating pressure, and as the cross section area of the first small hole structure 41 is 0.01 square millimeter-0.5 square millimeter, the cross section area is very small, when the air pressure is high, more air flows out from the first small hole structure 41 and finally passes through the exhaust hole 8, and the air pressure is finally stabilized at the second air pressure threshold; when the air pressure value of the first small hole structure 41 is low, the switch assembly is switched to the second state (opened), and less air flows out of the exhaust hole 8 through the first small hole structure 41, and finally the air pressure at the second air pressure threshold value is stabilized.

Specifically, the number of the first fine hole structures 41 may be 1 or more, and when 1, the cross-sectional area of the first fine hole structures 41 satisfies 0.01 to 0.5 square millimeters; when there are a plurality, the sum of the sectional areas of all the first fine hole structures 41 satisfies 0.01 square millimeters to 0.5 square millimeters.

Alternatively, when the first fine hole structure 41 is a circular hole, the diameter of the circular hole ranges from 0.1mm to 0.8mm.

Preferably, in a specific valve body, the cross-sectional area of the first fine hole structure 41 is greater than or equal to the cross-sectional area of the exhaust hole 8, which is beneficial for rapid gas discharge into the ambient air.

In an alternative embodiment, the opening of the pressure regulating air inlet hole 4 near the switch assembly is a first opening 42; the aperture of the first fine hole structure 41 is smaller than the first opening 42, the area of the end surface of the switch assembly, which is close to the first opening 42, is larger than the opening area of the first opening 42, the flow passage area between the first opening 42 and the first fine hole structure 41 along the radial direction of the first housing 1 is in smooth transition, and the pressure-regulating air inlet hole 4 forms an air inlet end buffer cavity 181.

Alternatively, the area of the end surface of the switch assembly adjacent to the first opening 42 may be equal to the opening area of the first opening 42.

Specifically, on one hand, the manufacturing of the pressure regulating air inlet hole 4 is facilitated, the area of one open hole at one end is increased no matter in machining or die drawing, and the machining difficulty is reduced; on the other hand, the increase of the cross-sectional area of the first opening 42 makes the pressure-regulating air inlet hole 4 itself form an air inlet end buffer cavity, so that the speed of the air flow at this position is reduced, which is beneficial to reducing the noise of the air.

Specifically, as shown in fig. 6 and 26, the pressure-regulating air inlet hole 4 may be a circular hole, as shown in fig. 1 and 2, or may be a tapered hole, and when the pressure-regulating air inlet hole 4 is a tapered hole, the aperture of the pressure-regulating air inlet hole 4 gradually increases from the pressure-regulating air inlet hole 4 to the direction of the first chamber 5.

In an alternative embodiment, the side of the first housing 1 away from the switch assembly is provided with a second cavity 6 communicated with the exhaust hole 8, and a silencing block 10 is arranged in the second cavity 6.

Referring to fig. 1 and 2, the second cavity 9 is communicated with the pressure-regulating air inlet channel 11, the air flowing out from the air outlet hole 8 flows through the second cavity 9 and is finally exhausted to the ambient atmosphere, and a silencing block 10 is disposed in the second cavity 9 and is used for silencing and reducing noise on the air flowing into the second cavity 9, so as to improve the user experience. Optionally, the silencing block may be a silencing sponge, or may be a silencing filter formed by sintering PE particles.

Specifically, the shape of the muffler block 10 may be a sheet shape, or a bent and folded shape.

In an alternative embodiment, the side of the pressure-regulating air inlet hole 4 away from the first chamber 5 is communicated with a first air passage 2 for inputting air to the pressure-regulating air inlet hole, and an air guide passage 3 communicated with the first air passage 2, and the side of the air guide passage 3 away from the first air passage 2 is provided with an air guide opening.

Alternatively, the air guide channel 3 of the pressure regulating valve 25 may be configured in other structures, the pressure regulating valve 25 is separately provided, the pressure regulating valve 25 is connected to the air channel system through an air pipe or other structures, and the pressure regulating valve 25 can also regulate the air pressure of the communicated air pipe or other structures. Alternatively, as shown in fig. 2 and 5, the pressure regulating valve 25 at least includes a gas guiding path 3, and the specific structure of the gas guiding path 3 may be designed as a gas guiding nozzle, and the gas guiding nozzle is used as a carrier to be connected with the gas guiding path 27, and at this time, the specific structure of the pressure regulating valve 25 is shown in fig. 14.

Specifically, when the pressure regulating valve 25 is communicated with the whole air guide passage 27 through the air guide passage 3, at this time, the air guide passage 27 is provided with an air inlet end, the air inlet end is used for being connected with an air source 30, when the whole air guide passage 27 is supplied with air, high-pressure air with a first air pressure threshold flows in the air guide passage 27, when the switch assembly is in the second state, part of relatively high-pressure air higher than the second air pressure threshold enters the first chamber 5 through the first tiny hole structure 41 of the pressure regulating air inlet hole 4, flows through the first chamber 5, is discharged to the ambient atmosphere through the air outlet hole 8, and after the discharged air is stable, the air in the air guide passage 27 is reduced to low-pressure air equal to the second air pressure threshold.

Optionally, referring to fig. 1 and 7, the pressure regulating valve 25 further includes a first air path 2, and the specific structure of the first air path 2 may be set as an air inlet nozzle 14, where the specific structure of the pressure regulating valve 25 is shown in fig. 13, and the air inlet nozzle 14 is used as a carrier and connected to an air source 30 through an air pipe to supply air to the air guide path 27.

Specifically, the first gas path 2 is far away from the gas guiding path 3 side and is used for inputting high-pressure gas with the gas pressure value being the first gas pressure threshold value to the pressure regulating valve 25, when the switch assembly is in the first state, the high-pressure gas with the first gas pressure threshold value flows out of the gas guiding port and flows in the gas guiding path 27, when the switch assembly is in the second state, part of relatively high-pressure gas higher than the second gas pressure threshold value enters the pressure regulating gas inlet path 11 from the pressure regulating gas inlet hole 4, which is close to the gas guiding path 3 side, of the pressure regulating gas inlet path 11, flows through the first chamber 5, is discharged to the ambient atmosphere from the gas discharging hole 8, and low-pressure gas equal to the second gas pressure threshold value flows into the gas guiding path 27 from the gas guiding path 3.

Further, a sealing ring is arranged at the joint of the air guide opening of the air guide nozzle and the air guide passage 27, so as to improve the tightness of the corresponding joint and avoid the problem of air leakage; here, the seal ring is of the type, for example, an O-ring.

In an alternative embodiment, along the direction of the first opening 42 towards the exhaust hole 8, the switch assembly comprises, in order, a silicone cap 15, a first valve core 6, a return elastic element 7; the silica gel caps 15 are arranged at two ends of the first valve core 6; one end of the first valve core 6 far away from the pressure regulating air inlet hole 4 is abutted with one end of the return elastic element 7, and the other end of the return elastic element 7 is abutted with the first plug 17; the first plug 17 is of a medium-pass structure and is used for gas circulation.

Referring to fig. 3 and 4, one side of the first plug 17 has at least one second opening 16, so that the port of the silicone cap 15 seals the through structure, and the gas in the first chamber 5 can be communicated with the through structure through the second opening 16.

Specifically, the silica gel cap 15 is disposed at the end of the first valve core 6 near the pressure regulating air inlet hole 4, and when the switch assembly is in the first state, the silica gel cap 15 blocks the first small hole structure 41; the free end of the first valve core 6 is abutted with one end of the return elastic element 7, and the other end of the return elastic element 7 is abutted with the first plug 17; the return elastic element 7 is used for providing acting force for resetting the silica gel cap 15 and the first valve core 6.

Further, as shown in fig. 1 or 2, when the driving mechanism of the first valve element 6 is the electromagnetic coil 12, the electromagnetic coil 12 is wound around the outer periphery of the first housing 1, and a U-shaped iron 13 is disposed on the surface of the first housing 1 and spans over the electromagnetic coil 12, wherein the U-shaped iron 13 is used for enhancing magnetism. Referring to fig. 8, when the driving mechanism of the first valve element 6 is a memory alloy wire 22, a circuit board 21 is mounted on the first housing 1, the circuit board 21 has a first electrode 19 and a second electrode 20, and the memory alloy wire 22 is connected with the first valve element 6; specifically, the first plug 17, the return elastic element 7 and the first valve core 6 are made of conductive materials, so that the first electrode 19 is in an electrical connection relationship with the first plug 17, the return elastic element 7 and the first valve core 6, when the memory alloy wire 22 is electrified, the memory alloy wire is shortened, the first valve core 6 opens the first opening 42, and the air pressure in the air guide passage 27 communicated with the air guide passage is maintained at a second air pressure threshold value; when the memory alloy wire 22 is powered off, the memory alloy wire 22 becomes longer, and under the reset action of the elastomer, the first valve core 6 closes the first opening 42, so that the air pressure value in the air guide passage 27 communicated with the air guide passage is a first air pressure threshold value; at this time, the silencer block 10 is a silencing sponge.

In an alternative embodiment, the space accommodating the return spring element 7 is formed as a vent-end buffer chamber 18.

Referring to fig. 7, at least one first notch is formed between two end surfaces of the first valve core 6 along the extending direction thereof, so that a space accommodating the first valve core 6 forms a middle section buffer cavity 182. The air inlet end buffer cavity 181, the middle section buffer cavity 182, the exhaust end buffer cavity 18 and the communication gap between any two cavities form a total buffer cavity together, and the volume of the total buffer cavity is 100-500 cubic millimeters.

Specifically, the gas passes through each buffer cavity, whether the gas is slowed down through the Helmholtz Huo Cishi effect or the speed of the gas flow, and then discharged, so that the noise elimination of the gas is facilitated, and the driving experience of a user is improved.

Example 2

On the basis of embodiment 1, this embodiment proposes a high-low pressure integrated pneumatic controller, which is characterized by comprising:

An air guide passage 27, wherein the air guide passage 27 is an air passage for communicating each valve body with the pressure regulating valve 25;

At least one first air valve body group 23, the first air valve body group 23 having a first air charging port, a first air intake port, and a first air discharging port; the first inflation port is used for connecting with a first air bag 28; the first air inlet is communicated with the air guide passage 27;

And/or the number of the groups of groups,

At least one second set of pneumatic valve bodies 24, the second set of pneumatic valve bodies 24 having a second inflation port, a second air inlet port, and a second bleed port; the second inflation port is used for connecting a second air bag body 29; the second air inlet is communicated with the air guide passage 27;

Also included is a pressure regulating valve 25 as described in embodiment 1; the air guide port of the pressure regulating valve 25 communicates with the air guide passage 27.

Specifically, as shown in fig. 10, the controller housing 26 is provided with an air tap structure for independent use connected with an air source 30; or a first air passage 2 is arranged through one of the pressure regulating valves 25, and the air passage communication relation between the air source 30 and the air guide passage 27 is established through the first air passage 2. Specifically, the number of the pressure regulating valves 25 in the high-low pressure integrated pneumatic controller is at least one, and the position on the air passage 27 is also arbitrary, as long as the air guide passage 3 can establish an air passage connection relationship with the air guide passage 27.

Specifically, when the number of the pressure regulating valves 25 in the high-low pressure integrated pneumatic controller is two or more, the cross-sectional areas of the first small hole structures 41 of different pressure regulating valves 25 are set to be different, so that the second air pressure threshold value to which different pressure regulating valves 25 can be opened is different, and pressure regulation with more than two stages can be realized.

Alternatively, as shown in fig. 9, the number of the pressure regulating valves 25 is one, and as shown in fig. 11, the pressure regulating valves 25 are disposed between any of the first air valve group 23 and the second air valve group 24, and as shown in fig. 9, the pressure regulating valves 25 may be disposed on one side of the air guide passage 27, or may be disposed between the first air valve group 23 and the second air valve group 24.

Alternatively, as shown in fig. 12, the number of the pressure regulating valves 25 may be two, and two pressure regulating valves 25 may be provided in parallel on one side of the air guide passage 27.

Specifically, when the pressure regulating valve 25 is in a closed state, the silica gel cap 15 seals the first opening 42, and if the air source 30 is connected to the air inlet nozzle 14 and is in an open state, the air can only enter the air guide passage 27 through the air inlet nozzle 14 and the air guide nozzle, and then the air guide passage 27 conveys the air to the corresponding air bag body through the corresponding pneumatic valve body. When the pressure regulating valve 25 is in an open state, the air inlet nozzle 14 and the first chamber 5 are in a conducting state, and if the air source 30 is also in an open state, at this time, a part of air enters the air guide passage 27 from the air inlet nozzle 14, and a part of air enters the first chamber 5 through the first tiny hole structure 41, flows through both sides of the first chamber 5 and passes through the exhaust hole 8, and is discharged from one side of the second chamber 9; here, the amount of gas discharged is related to the set pressure value of the pressure regulating valve 25 and the gas pressure in the gas guide passage 27, and if the gas pressure in the gas guide passage 27 is greater than the set pressure value of the pressure regulating valve 25 (second gas pressure threshold value), the excessive gas is rapidly discharged from the second chamber 9, and finally, the gas pressure in the gas guide passage 27 is regulated so as to be reduced to the second gas pressure threshold value. Further, an air guide nozzle is disposed at one end of the pressure-regulating air inlet hole 4 far away from the silica gel cap 15, and the air guide nozzle is communicated with the pressure-regulating air inlet hole 4 for guiding the air into the pressure-regulating air inlet channel 11.

Specifically, referring to fig. 11, the air source 30 may not be connected to the air inlet nozzle 14, and the air guide passage 27 may have an air inlet end for connecting to the air source 30 and directly communicating with the air guide passage 27.

Specifically, referring to fig. 12 or 9, the air source 30 may be further connected to the air inlet nozzle 14 of the pressure regulating valve 25, where the air guide passage 27 does not have an air inlet end.

Specifically, since the high-low pressure integrated pneumatic controller provided in the present embodiment includes the pressure regulating valve 25 in embodiment 1, the high-low pressure integrated pneumatic controller provided in the present embodiment also has the functions of silencing and reducing noise, and improving the riding experience of the user.

Example 3

On the basis of embodiment 2, this embodiment proposes a control system including: the high-low pressure integrated pneumatic controller and pneumatic control unit, the air source 30, the first air bag body 28 and the second air bag body 29 described in embodiment 2;

The first air valve body group 23 includes: a first pneumatic control valve 231 matched to the number of the first air cells 28;

And/or the number of the groups of groups,

The second pneumatic valve body group 24 includes: a second pneumatic control valve 241 matched to the number of the second air bag bodies 29;

the pneumatic control unit is electrically connected to the first pneumatic control valve 231 and/or the second pneumatic control valve 241 and the pressure regulating valve 25, and is configured to control the open/closed states of the first pneumatic control valve 231, the second pneumatic control valve 241 and the pressure regulating valve 25.

Specifically, a control unit is electrically connected to the first pneumatic control valve 231, the second pneumatic control valve 241, and the pressure regulating valve 25, and is configured to control the open/closed states of the first pneumatic control valve 231, the second pneumatic control valve 241, and the pressure regulating valve 25; here, the type of control unit is, for example, an electronic control unit (Electronic Control Unit, ECU)

Also, the first air valve group 23 includes first air control valves 231 matching the number of the first air cells 28; the first air charging port is an air charging port of the first air control valve 231, the first air inlet is an air inlet of the first air control valve 231, and the first air discharging port is an air discharging port of the first air control valve 231. The second air valve group 24 includes: a second pneumatic control valve 241 matched to the number of the second air bag bodies 29; the second air charging port is an air charging port of the second pneumatic control valve 241, the second air inlet is an air inlet of the second pneumatic control valve 241, and the second air discharging port is an air discharging port of the second pneumatic control valve 241.

The first pneumatic control valve 231 and the second pneumatic control valve 241 are, for example, solenoid valves or memory alloy type valve bodies. The first air bag 28 is, for example, of a type requiring pressure maintenance, and the second air bag 29 is, for example, of a type requiring no pressure maintenance. The air bag body needing pressure maintaining at least comprises: a waist support airbag body, a leg support airbag body, and a headrest support airbag body; the pressure-maintaining air bag body is not required to at least comprise: a massage air bag body.

Further, the control system realizes different high-pressure and low-pressure inflation requirements of users, and the control method required comprises the following specific steps:

When the first air valve group 23, the second air valve group 24 and the pressure regulating valve 25 are all in the closed state, the air pressure in the first air bag body 28 and the second air bag body 29 is kept unchanged;

When the first air valve group 23 or the second air valve group 24 needs low-pressure inflation, the control unit controls the pressure regulating valve 25 to be in an open state, the second air valve group 24 or the first air valve group 23 is in a closed state, the air source 30 guides air to the valve group which is not closed in the first air valve group 23 or the second air valve group 24, at this time, air exceeding the set pressure value of the pressure regulating valve 25 in the air guiding passage 27 enters the first chamber 5 through the first tiny hole structure 41, and finally flows through the first chamber 5 and is discharged through the exhaust hole 8, so that the first air bag body 28 or the second air bag body 29 is inflated at low pressure.

When the first air valve group 23 or the second air valve group 24 needs high-pressure inflation, the control unit controls the pressure regulating valve 25 to be in a closed state, the second air valve group 24 or the first air valve group 23 is in a closed state, and the air source 30 guides air to the valve group which is not closed in the first air valve group 23 or the second air valve group 24, so as to inflate the first air bag 28 or the second air bag 29 at high pressure.

Among them, the structure requiring high pressure inflation is, for example, a car side wing support system, and the structure requiring low pressure inflation is, for example, a car massage waist support system.

Specifically, fig. 15 shows the first air valve group 23 in an open state and the second air valve group 24 in a closed state, and the requirement of high-pressure inflation of any valve group can be met. Fig. 17 shows the first air valve group 23 and the second air valve group 24 in a closed state, and the air inside the first air bag body 28 and the second air bag body 29 is kept unchanged.

As shown in fig. 24, the first pneumatic valve group 23 is in an open state, the second pneumatic valve group 24 is in a closed state, when all the first air bags 28 need high-pressure inflation, all the first pneumatic control valves 231 are in an open state, the pressure regulating valve 25 is in a closed state, the gas source 30 is started, and the gas enters the corresponding first air bags 28 through the first pneumatic control valves 231 via the gas guide passage 27, so that the requirement of high-pressure inflation of all the first air bags 28 is met simultaneously; as shown in fig. 22, when all the first air bags 28 need to be inflated at low pressure, all the first air control valves 231 and control valves are in an open state, the air source 30 is started, the pressure regulating valve 25 is in an open state, when the air pressure of the air source 30 is higher than the second air pressure threshold value, the air is discharged through the pressure regulating valve 25 via the air guide passage 27, and when the air pressure discharged into the air guide passage 3 is the second air pressure threshold value, the pressure regulating valve 25 is closed, so that the requirement of simultaneously inflating all the first air bags 28 at low pressure is realized.

As shown in fig. 19, when any one of the first air bags 28 of the first air valve group 23 needs to be inflated at high pressure or low pressure, the second air valve group 24 is in a closed state, the corresponding first air control valve 231 in the first air valve group is in an open state, the air source 30 is started, air enters the first air bag 28 through the air guide passage 27 and the first air control valve 231, the inflation requirement of high pressure or low pressure on one of the first air bags 28 is achieved by controlling the on-off state of the pressure regulating valve 25, when the pressure regulating valve 25 is in the open state, the first air bag 28 corresponding to the first air control valve 231 is the second air pressure threshold (low air pressure value) corresponding to the pressure regulating valve 25, and when the pressure regulating valve 25 is in the closed state, the first air bag 28 corresponding to the first air control valve 231 is the first air pressure threshold (high air pressure value) corresponding to the pressure regulating valve 25.

As shown in fig. 18, when the second pneumatic valve group 24 is in an open state, the first pneumatic valve group 23 is in a closed state, and when all the second air bag bodies 29 need high-pressure inflation, all the second pneumatic control valves 241 are in an open state, the first pneumatic control valves 231 are in a closed state, the starting air source 30 and the pressure regulating valve 25 are in a closed state, and air enters the corresponding second air bag bodies 29 through the air guide passages 27 by the second pneumatic control valves 241, so that the requirement of simultaneously inflating all the second air bag bodies 29 at high pressure is met; when all the second air bag bodies 29 need low-pressure inflation, as shown in fig. 20, all the second pneumatic control valves 241 and the pressure regulating valves 25 are in an open state, the air source 30 is started, when the air pressure of the air source 30 is higher than a second air pressure threshold value, the air is discharged through the air guide passage 27 by the pressure regulating valves 25, and when the air pressure discharged into the air guide passage 3 is the second air pressure threshold value, the air enters the corresponding second air bag bodies 29 through the air guide passage 27 and then passes through the second pneumatic control valves 241, so that the requirement of low-pressure inflation of all the second air bag bodies 29 at the same time is realized.

As shown in fig. 23, when any one of the second air bag bodies 29 of the second air valve group 24 needs to be inflated at high pressure or low pressure, the first air valve group 23 is in a closed state, the corresponding second air control valve 241 is in an open state, the air source 30 is started, air enters the second air bag body 29 through the air guide passage 27 and the second air control valve 241, the high pressure or low pressure inflation requirement on one of the second air bag bodies 29 is achieved by controlling the on-off state of the pressure regulating valve 25, when the pressure regulating valve 25 is in the open state, the second air bag body 29 corresponding to the second air control valve 241 is the second air pressure threshold (low air pressure value) corresponding to the pressure regulating valve 25, and when the pressure regulating valve 25 is in the closed state, the second air bag body 29 corresponding to the second air control valve 241 is the first air pressure threshold (high air pressure value) corresponding to the pressure regulating valve 25.

The above-described fig. 17 to 25 mainly describe the high pressure/low pressure inflation condition of the first air valve group 23 and/or the second air valve group 24 when the number of the pressure regulating valves 25 is one.

When the number of the pressure regulating valves 25 is 2, the sizes of the areas of the first small hole structures 41 of the two pressure regulating valves 25 are different, that is, the second air pressure threshold settings of the two pressure regulating valves 25 are different, it is assumed that the sizes of the areas of the first small hole structures 41 of the first pressure regulating valve 25 can discharge part of the high-pressure air, so that the air in the air guide passage 27 is at the middle pressure, and the sizes of the first small hole structures 41 of the second pressure regulating valve 25 can discharge part of the high-pressure air, so that the air in the air guide passage 27 is at the low pressure, and the middle pressure is greater than the low pressure. If any control valve of the first pneumatic valve group 23 and/or the second pneumatic valve group 24 needs high-pressure inflation, both pressure regulating valves 25 are in a closed state to inflate the air bag at high pressure; if any control valve of the first pneumatic valve group 23 and/or the second pneumatic valve group 24 needs to perform intermediate pressure inflation, opening the first pressure regulating valve 25, closing the second pressure regulating valve 25, and performing intermediate pressure inflation on the air bag; if any control valve of the first air valve group 23 and/or the second air valve group 24 needs to be inflated at low pressure, the second pressure regulating valve 25 is opened, and the first pressure regulating valve 25 can be closed or opened to inflate the air bag at low pressure.

Fig. 16 shows that when the number of the pressure regulating valves 25 is three or more, the second air pressure thresholds of the plurality of pressure regulating valves 25 are different, and the different second air pressure thresholds are set so that the area sizes of the first small hole structures 41 of the different pressure regulating valves 25 are different, and the different air pressures are required to regulate the corresponding control valves with different bearing pressures to achieve the corresponding pressures to assist any control valve of the first air valve group 23 and/or the second air valve group 24 to carry out different pressure inflation.

The number of the pressure regulating valves 25 may be three or more, and the differential level of the air pressure regulation is the same as the above principle, and will not be described again.

As can be seen from the above examples, the pressure regulating valve 25 is capable of assisting in high-pressure or low-pressure inflation of all the air bag bodies connected to the first air valve block 23 and/or the second air valve block 24 simultaneously or individually.

Specifically, since the control system provided in this embodiment includes the pressure regulating valve 25 in embodiment 1, the control system provided in this embodiment and the control method executed for the control system also have the functions of silencing and reducing noise, and improving the riding experience of the user.

The principles and embodiments of the present application have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present application and its core ideas. The foregoing is merely illustrative of the preferred embodiments of this application, and it is noted that there is objectively no limit to the specific structure disclosed herein, since numerous modifications, adaptations and variations can be made by those skilled in the art without departing from the principles of the application, and the above-described features can be combined in any suitable manner; such modifications, variations and combinations, or the direct application of the inventive concepts and aspects to other applications without modification, are contemplated as falling within the scope of the present application.

Claims (10)

1. A pressure regulating valve for a seat pneumatic adjustment system, comprising:

The device comprises a first shell (1), wherein a pressure regulating air inlet channel (11) is arranged in the first shell (1), and the pressure regulating air inlet channel (11) sequentially comprises a pressure regulating air inlet hole (4), a first cavity (5) and at least one exhaust hole (8) communicated with the ambient atmosphere along the axial direction of the first shell (1); the gas pressure value in the pressure regulating air inlet hole (4) can be a first gas pressure threshold value or a second gas pressure threshold value; the first air pressure threshold is greater than the second air pressure threshold;

the pressure regulating air inlet hole (4) is provided with a first tiny hole structure (41);

The switch assembly is arranged in the first chamber (5) and has a first state and a second state; in a first state, the switch assembly blocks the pressure-regulating air inlet hole (4), and the air pressure value in the pressure-regulating air inlet hole (4) is maintained at the first air pressure threshold value; in a second state, the switch assembly opens the pressure regulating air inlet hole (4) to enable the pressure regulating air inlet hole (4) to be communicated with the first chamber (5) and the air outlet hole (8), part of air with the air pressure value higher than a second air pressure threshold value in the pressure regulating air inlet hole (4) enters the first chamber (5) through the first tiny hole structure (41), flows through the first chamber (5) and is discharged to the ambient atmosphere through the air outlet hole (8), so that the air pressure in the pressure regulating air inlet hole (4) is reduced and maintained at the second air pressure threshold value.

2. The pressure regulating valve according to claim 1, wherein: the first tiny hole structure (41) is arranged at one end of the pressure regulating air inlet hole (4) far away from the switch component.

3. The pressure regulating valve according to claim 1, wherein: the cross-sectional area of the first fine hole structure (41) is 0.01-0.5 square millimeters.

4. The pressure regulating valve according to claim 1, wherein: the opening of the pressure regulating air inlet hole (4) close to the switch assembly is a first opening (42); the aperture of the first tiny hole structure (41) is smaller than the first opening (42), the end surface area of the switch component, which is close to the first opening (42), is larger than the opening area of the first opening (42), the flow passage area between the first opening (42) and the first tiny hole structure (41) along the radial direction of the first shell (1) is in smooth transition, and the pressure regulating air inlet hole (4) forms an air inlet end buffer cavity (181).

5. The pressure regulating valve according to claim 1, wherein: the side, far away from the switch assembly, of the first shell (1) is provided with a second cavity (9) communicated with the exhaust hole (8), and a silencing block (10) is arranged in the second cavity (9).

6. The pressure regulating valve according to claim 1, wherein: the pressure regulating air inlet hole (4) is far away from the side of the first chamber (5) and is communicated with a first air passage (2) for inputting air to the pressure regulating air inlet hole, and an air guide passage (3) communicated with the first air passage (2), and the side of the air guide passage (3) far away from the first air passage (2) is provided with an air guide opening.

7. The pressure regulating valve according to claim 4, wherein: the switch assembly sequentially comprises a silica gel cap (15), a first valve core (6) and a return elastic element (7) along the direction of the first opening (42) towards the exhaust hole (8); the silica gel caps (15) are arranged at two ends of the first valve core (6); one end of the first valve core (6) far away from the pressure regulating air inlet hole (4) is abutted with one end of the return elastic element (7), and the other end of the return elastic element (7) is abutted with a first plug (17); the first plug (17) is of a medium-pass structure and is used for gas circulation.

8. The pressure regulating valve according to claim 7, wherein: the space accommodating the return elastic element (7) is formed as an exhaust end buffer cavity (18).

9. A high and low pressure integrated pneumatic controller, comprising:

An air guide passage (27), wherein the air guide passage (27) is an air passage for communicating each valve body and the pressure regulating valve (25);

at least one first pneumatic valve body group (23), the first pneumatic valve body group (23) having a first inflation port, a first air inlet port and a first venting port; the first inflation port is used for being connected with a first air bag body (28); the first air inlet is communicated with the air guide passage (27);

And/or the number of the groups of groups,

At least one second pneumatic valve body group (24), the second pneumatic valve body group (24) having a second inflation port, a second air inlet port and a second bleed port; the second inflation port is used for being connected with a second air bag body (29); the second air inlet is communicated with the air guide passage (27);

A pressure regulating valve (25) of a seat pneumatic adjustment system according to any one of claims 1-8; the air guide port of the pressure regulating valve (25) is communicated with the air guide passage (27).

10. A control system, comprising: the high and low pressure integrated pneumatic controller and pneumatic control unit of claim 9, an air supply (30), a first bladder body (28) and a second bladder body (29);

The first air valve body group (23) includes: a first pneumatic control valve (231) matched with the number of the first air bag bodies (28);

And/or the number of the groups of groups,

The second pneumatic valve body group (24) includes: a second pneumatic control valve (241) matched to the number of the second air bag bodies (29);

the pneumatic control unit is electrically connected with the first pneumatic control valve (231) and/or the second pneumatic control valve (241) and the pressure regulating valve (25), and the control unit is used for controlling the opening and closing states of the first pneumatic control valve (231), the second pneumatic control valve (241) and the pressure regulating valve (25).