Diaphragm pump and pneumatic comfort system

Abstract

The utility model relates to the technical field of pneumatic comfort systems, and discloses a diaphragm pump and a pneumatic comfort system.The diaphragm pump comprises a diaphragm, a valve component, a pressure chamber, a pressure regulating channel and a pressure regulating valve, and a pump chamber is defined between the valve component and the diaphragm; the valve component comprises an air inlet valve and an air outlet valve which are in ventilation communication with the pump cavity. The pressure chamber is in ventilation communication with the air outlet valve and is configured to receive gas exhausted from the pump chamber; the pressure regulating channel is communicated between the pressure chamber and the air inlet valve in a ventilating manner; the pressure regulating valve is arranged in the pressure regulating channel and controls on-off of the pressure regulating channel. According to the diaphragm pump provided by the utility model, the pressure regulating channel communicated with the pressure chamber and the air inlet valve is arranged, and the pressure regulating valve is arranged at the pressure regulating channel to control the on-off of the pressure regulating channel, so that when the pressure regulating channel is opened through pressure relief, the pressure chamber is communicated with the air inlet valve, air flows back to the pump chamber, and internal recycling of the air is realized; the gas utilization efficiency is improved, and the noise is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of pneumatic comfort systems, in particular to a diaphragm pump and a pneumatic comfort system. Background Art

[0002] With the development of the automobile industry, people pay more and more attention to the subjective feelings of driving and riding in cars, and the requirements for car seats are getting higher and higher, from the initial seat safety requirements to the basic functional requirements of seats, and then to the requirements of seat comfort function configuration. Therefore, under the premise of ensuring the appearance of the seat, the development of the comfort performance of seat products is very important in the personalized design of the vehicle, and it is also a part of ensuring the safety performance of the vehicle. Among them, the pneumatic comfort system of the car seat usually uses an air pump as the air source.

[0003] However, the air pumps used in the existing pneumatic comfort systems of automobile seats, such as diaphragm pumps or pump-valve integrated structures, usually have a pressure relief channel connected to the air pump outlet or the air valve inlet at the air pump outlet or at the air valve inlet of the pump-valve integrated structure, and a pressure relief valve is provided on the pressure relief channel. When the output air pressure of the air supply is too high, the pressure relief valve on the pressure relief channel will open and relieve air to avoid excessive output pressure.

[0004] Among them, the gas released through the pressure relief valve is usually discharged directly into the atmosphere, which easily causes gas waste and easily generates obvious noise during the corresponding pressure relief process. Utility Model Content

[0005] In order to solve the problem that the gas leaked from the air source in the above-mentioned prior art pneumatic comfort system through the pressure relief valve is directly discharged into the atmosphere, which easily causes gas waste and generates obvious noise during the pressure relief process, the utility model provides a diaphragm pump and a pneumatic comfort system, by providing a pressure regulating channel connected to the pressure chamber and the air inlet valve, and providing a pressure regulating valve at the pressure regulating channel. When the air pressure in the pressure chamber is greater than the threshold value, the pressure regulating channel is opened by the pressure regulating valve, so that the pressure chamber and the air inlet valve are connected, and the gas flows back to the pump chamber, thereby realizing the effect of internal circulation of the gas.

[0006] The technical effects to be achieved by the utility model are achieved through the following technical aspects:

[0007] In a first aspect, the utility model provides a diaphragm pump, comprising:

[0008] Diaphragm;

[0009] a valve member, wherein a pump chamber is defined between the valve member and the diaphragm; the valve member comprises an inlet valve and an outlet valve, wherein the inlet valve is in ventilating communication with the pump chamber and is configured to supply gas to the pump chamber, and the outlet valve is in ventilating communication with the pump chamber and is configured to exhaust gas from the pump chamber;

[0010] a pressure chamber in ventilated communication with the outlet valve and configured to receive gas exhausted from the pump chamber;

[0011] A pressure regulating passage, ventilated and connected between the pressure chamber and the air inlet valve;

[0012] The pressure regulating valve is arranged in the pressure regulating channel, and has a first position for closing the pressure regulating channel when the air pressure in the pressure chamber is less than a threshold value, and a second position for opening the pressure regulating channel when the air pressure in the pressure chamber is greater than the threshold value.

[0013] In some optional implementations, the diaphragm pump further includes a biasing member, which is elastically deformable and biases the pressure regulating valve to place the pressure regulating valve in the first position.

[0014] In some optional implementations, the valve component includes a retaining member and a transition member, and the transition member is disposed between the retaining member and the diaphragm;

[0015] The pressure regulating channel includes a pressure regulating hole opened in the retaining member, a guide hole and a guide groove opened in the transition member, the pressure regulating hole is ventilated to the pressure chamber, the guide hole is ventilated to the pressure regulating hole, the guide hole is ventilated to the guide groove, the guide groove is ventilated to the intake valve, and the pressure regulating valve is biased by the biasing component to close the pressure regulating hole when the pressure regulating valve is in the first position.

[0016] In some optional implementations, the pressure regulating hole is opposite to the flow guide hole, and in the first position, the pressure regulating valve passes through the flow guide hole and is sealed against the periphery of the pressure regulating hole to be biased.

[0017] In some optional implementations, the guide hole includes a first hole segment close to the retaining member and a second hole segment away from the retaining member, the aperture of the second hole segment is smaller than the aperture of the first hole segment, a limit platform is provided at the connection point between the second hole segment and the first hole segment, and when the pressure regulating valve is in the second position, the limit platform limits the stroke of the pressure regulating valve.

[0018] In some optional implementations, the guide groove is opened on a side of the transition piece close to the retaining piece, and a groove edge of the guide groove is sealed against the retaining piece.

[0019] In some optional implementations, the air inlet valve is arranged on the transition piece, and the air outlet valve is arranged on the retaining piece. The transition piece has a first air hole for ventilating the pump chamber and the air outlet valve, and the retaining piece has a second air hole for ventilating the air inlet valve and the accommodating space in the housing of the diaphragm pump.

[0020] In some optional implementations, the diaphragm pump further includes a diaphragm carrier, the diaphragm carrier supports the diaphragm, a guide groove is formed on the diaphragm carrier, and the biasing component is received in the guide groove.

[0021] In some optional implementations, at least one gas distribution valve is further included, and the at least one gas distribution valve is ventilatedly connected between the gas outlet valve and the pressure chamber.

[0022] In a second aspect, the utility model provides a pneumatic comfort system, comprising:

[0023] Airbags;

[0024] Gas distribution device;

[0025] And the diaphragm pump described above, the air bag is ventilatedly connected to the diaphragm pump through the gas distribution device.

[0026] In summary, the utility model has at least the following benefits:

[0027] 1. The diaphragm pump provided by the utility model is provided with a pressure regulating channel connected to the pressure chamber and the air inlet valve, and a pressure regulating valve is provided at the pressure regulating channel. When the air pressure at the pressure chamber is greater than a threshold value, the pressure regulating channel is opened by the pressure regulating valve, so that the pressure chamber and the air inlet valve are connected, and the gas flows back to the pump chamber, thereby realizing the internal circulation utilization of the gas, improving the gas utilization efficiency, and reducing the noise.

[0028] 2. The pneumatic comfort system provided by the utility model adopts the above-mentioned diaphragm pump as the air source device to supply air to the air bag. The diaphragm pump can achieve pressure regulation and internal circulation of gas during the air supply process, thereby improving gas utilization efficiency, reducing noise, and improving user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 A schematic diagram of an explosion structure of a diaphragm pump provided in an embodiment of the utility model.

[0030] Figure 2 A schematic diagram of two explosion structures of a diaphragm pump provided in an embodiment of the utility model.

[0031] Figure 3 A schematic diagram of the three-explosion structure of the diaphragm pump provided in an embodiment of the utility model.

[0032] Figure 4 A schematic diagram of the three-dimensional structure of a diaphragm pump provided in an embodiment of the utility model.

[0033] Figure 5 for Figure 4 AA section view.

[0034] Figure 6 A schematic structural diagram of a transition piece for a diaphragm pump provided in an embodiment of the utility model.

[0035] Figure 7 A schematic structural diagram of another angle of the transition piece of the diaphragm pump provided in an embodiment of the utility model.

[0036] Figure 8 A schematic structural diagram of a retaining member of a diaphragm pump provided in an embodiment of the utility model.

[0037] Fig. 9 A schematic structural diagram of a diaphragm carrier of a diaphragm pump provided in an embodiment of the utility model.

[0038] Markings in the figure:

[0039] 1. Actuator;

[0040] 11. Output shaft;

[0041] 2. Shell;

[0042] 20. Accommodation space;

[0043] 21. Diaphragm carrier;

[0044] 211, guide groove; 212, positioning column; 213, first through hole;

[0045] 22. Shell;

[0046] 221, air inlet; 222, second locking portion;

[0047] 3. Diaphragm;

[0048] 31. Driving parts;

[0049] 4. Airway plate;

[0050] 401, pressure chamber;

[0051] 41. Exhaust port;

[0052] 42. Receiver interface;

[0053] 43. A first clamping portion;

[0054] 5. Transition piece;

[0055] 51. Diversion hole;

[0056] 511, first hole section; 512, second hole section; 513, limit platform;

[0057] 52. Diversion trough;

[0058] 53. Seals;

[0059] 54. a second through hole;

[0060] 55. Intake valve;

[0061] 56. First pore;

[0062] 6. Pressure regulating valve;

[0063] 7. Biasing components;

[0064] 8. Holding parts;

[0065] 81. Pressure regulating hole;

[0066] 82. a third through hole;

[0067] 83. Exhaust valve;

[0068] 84, second pore;

[0069] 9. Fasteners. DETAILED DESCRIPTION

[0070] In order to make the purpose, technical solution and advantages of the implementation of the utility model clearer, the technical solution in the implementation of the utility model will be clearly and completely described below in conjunction with the drawings in the implementation of the utility model. The described implementation is a part of the implementation of the utility model, not all of the implementations.

[0071] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0072] See also Figure 1-Figure 5 The diaphragm pump provided by the embodiment of the utility model includes an actuator 1, a housing 2, a diaphragm 3, a valve component, a pressure regulating channel and a pressure regulating valve 6.

[0073] The actuator 1 may be selected from but not limited to a motor or an electric machine, and is preferably a motor, which has an output shaft 11 , and the output shaft 11 will rotate when the actuator 1 is powered on and started.

[0074] The housing 2 has a housing space 20 and an air inlet 221 connected to the housing space 20. The diaphragm 3, the pressure regulating channel and the pressure regulating valve 6 are arranged in the housing space 20. The air inlet 221 connects the housing space 20 with the outside atmosphere. In the present utility model, the diaphragm 3 can be preferably but not limited to a compressible and deformable structural member such as an air bag, a leather cup, etc., and its compressible and deformable volume space is constructed as a chamber that can be compressed by fluid. The housing 2 is also provided with an outlet 41 that is ventilated and connected to the volume space of the diaphragm 3, which is used to output the air flow generated by the deformation and compression of the diaphragm 3 to the outside. The valve component is arranged on the housing 2, and is configured to pass the air in the housing space 20 into the volume space of the diaphragm 3, and is configured to discharge the air flow generated by the compression of the diaphragm 3 from the outlet 41. Under the regulation of the pressure regulating valve 6, the pressure regulating channel guides the air flow whose air pressure exceeds the threshold when the air outlet 41 is discharged to flow back to the housing space 20.

[0075] Specifically, the housing 2 is fixedly connected to the actuator 1, and the actuator 1 can drive the diaphragm 3 to deform and compress the gas to output. The housing 2 includes an airway plate 4, a diaphragm carrier 21, a shell 22, and a valve component. The shell 22 has the above-mentioned accommodation space 20 and an air inlet 221 connected to the accommodation space 20. The shell 22 is fixedly connected to the actuator 1 and closes the accommodation space 20. The diaphragm carrier 21 matches the shell 22 and is supported and assembled on the shell 22. The diaphragm 3 is supported and arranged in the accommodation space 20 by the diaphragm carrier 21. The output shaft 11 of the actuator 1 passes through the shell 22 and is functionally connected to the diaphragm 3 to drive the diaphragm 3 to deform and compress the air to generate airflow. The airway plate 4 is connected to the diaphragm carrier 21 and closes the accommodation space 20, and the airway plate 4 is provided with the above-mentioned air outlet 41 that is ventilated and connected to the volume space of the diaphragm 3.

[0076] The valve member is disposed between the diaphragm 3 and the airway plate 4, and a pump chamber for gas compression is defined between the valve member and the diaphragm 3. In addition, the valve member further includes an inlet valve 55 and an outlet valve 83. Specifically, the inlet valve 55 and the outlet valve 83 are both one-way valves for one-way air intake and one-way air discharge, respectively. The inlet valve 55 is ventilated in communication with the pump chamber and is configured to supply gas to the pump chamber, and the outlet valve 83 is ventilated in communication with the pump chamber and is configured to discharge gas from the pump chamber.

[0077] When the diaphragm pump is working, the outside atmosphere enters the accommodating space 20 of the outer shell 2 from the air inlet 221, and is then guided into the volume space of the diaphragm 3 through the air inlet valve 55; when the actuator 1 drives the diaphragm 3 to compress and deform, the gas in the volume space of the diaphragm 3 is compressed and discharged through the air outlet valve 83 connected to its volume space, and then output from the connected air outlet 41.

[0078] In a preferred embodiment, the valve component includes a holder 8 and a transition piece 5, wherein the transition piece 5 is disposed between the holder 8 and the diaphragm 3, and the holder 8 is disposed between the transition piece 5 and the airway plate 4 to facilitate the transition piece 5 to stably fit close to the diaphragm 3, and a pump chamber is directly defined between the transition piece 5 and the diaphragm 3. Moreover, an inlet valve 55 is disposed on the transition piece 5, and an outlet valve 83 is disposed on the holder 8. The transition piece 5 has a first air hole 56 for ventilating the pump chamber and the outlet valve 83, and the holder 8 has a second air hole 84 for ventilating the inlet valve 55 and the accommodating space 20 of the housing 2.

[0079] In an optional embodiment, a driving member 31 is provided between the diaphragm 3 and the actuator 1. The driving member 31 is eccentrically connected to the output shaft 11 of the actuator 1 and can swing under the drive of the actuator 1. The diaphragm 3 is connected to the driving member 31 and is compressed and deformed as the driving member 31 swings. During the continuous rotation drive of the output shaft 11, the diaphragm 3 is cyclically compressed, deformed and restored, thereby intermittently pumping air.

[0080] In another preferred embodiment, a plurality of diaphragms 3 can be provided, and the plurality of diaphragms 3 are transmission-connected to the actuator 1 via a driving member 31. The plurality of diaphragms 3 are compressed and deformed in sequence with the deflection of the driving member 31 to realize continuous pump pressure air supply, thereby realizing uninterrupted air supply of the diaphragm pump.

[0081] In the embodiment of the utility model, a receiving port 42 connected to the gas outlet 41 is provided on the surface of the airway plate 4 opposite to the retaining member 8, and the receiving port 42 is connected to the gas outlet valve 83 on the retaining member 8, and is used to receive the gas discharged by the gas outlet valve 83, and discharge the received gas flow from the connected gas outlet 41. When the diaphragm 3 is provided in plurality, the receiving port 42 is correspondingly provided in plurality, and the plurality of receiving ports 42 are all connected to the gas outlet 41, wherein the plurality of receiving ports 42 can converge and be connected to the gas outlet 41.

[0082] The pressure chamber 401 with a high-pressure gas source when the gas is discharged is formed between the receiving port 42 and the gas outlet 41 of the gas channel plate 4. The pressure chamber 401 is ventilated and connected to the gas outlet valve 83 when the gas is supplied, and is configured to receive the gas discharged from the pump chamber of the diaphragm 3.

[0083] In a preferred embodiment, the pressure regulating channel is configured to be ventilated and connected between the pressure chamber 401 and the air inlet valve 55. Specifically, since the air inlet valve 55 is ventilated and connected to the accommodating space 20 of the outer shell 2, the pressure regulating channel can be configured to be ventilated and connected to the pressure chamber 401 and the accommodating space 20.

[0084] The pressure regulating valve 6 is arranged in the pressure regulating channel, and has a first position for closing the pressure regulating channel when the air pressure in the pressure chamber 401 is less than a threshold value, and a second position for opening the pressure regulating channel when the air pressure in the pressure chamber 401 is greater than the threshold value.

[0085] The diaphragm pump provided by the embodiment of the utility model is provided with a pressure regulating channel ventilated and connected between the pressure chamber 401 and the air inlet valve 55, and a pressure regulating valve 6 is provided at the pressure regulating channel. When the air pressure at the pressure chamber 401 is greater than the threshold value, the pressure regulating channel is opened by the pressure regulating valve 6, so that the pressure chamber 401 and the air inlet valve 55 are connected, and the high-pressure gas can flow back to the accommodating space 20 and flow back to the pump chamber again, thereby achieving pressure relief of the pressure chamber 401, adjusting the output air pressure of the pressure chamber 401, and realizing the recycling of the gas in the housing 2 of the diaphragm pump, thereby improving the gas utilization efficiency. Moreover, compared with the friction noise between the high-pressure gas source and the external atmosphere when the pressure relief gas is directly discharged into the atmosphere, the high-pressure gas source recycled internally can effectively reduce the noise.

[0086] In some optional embodiments, the pressure regulating valve 6 is selected as a plunger, and the diaphragm pump of the present invention further includes a biasing component 7, which is elastically deformable and biases the pressure regulating valve 6 to place the pressure regulating valve 6 in the first position.

[0087] Preferably, the biasing component 7 adopts a spring, and the air pressure threshold value can be understood as the air pressure value that overcomes the elastic force of the spring. Then, the coordination process of the biasing component 7 and the pressure regulating valve 6 is as follows: when the air pressure at the pressure chamber 401 is less than the threshold value, it can also be understood that when the air pressure of the air pressure at the pressure chamber 401 on the pressure regulating valve 6 is less than the elastic force of the spring, the pressure regulating valve 6 is in the first position of closing the pressure regulating channel under the action of the elastic force of the spring; when the air pressure at the pressure chamber 401 is greater than the threshold value, it can also be understood that when the air pressure of the air pressure at the pressure chamber 401 on the pressure regulating valve 6 is greater than the elastic force of the spring, the pressure regulating valve 6 is in the second position of opening the pressure regulating channel under the action of the air pressure.

[0088] In some other optional embodiments, the structures of the valve component, the pressure chamber 401 and the pressure regulating channel are optimized, such as Figure 6-Figure 9 shown.

[0089] The pressure regulating channel includes a pressure regulating hole 81 opened in the retaining member 8, and a guide hole 51 and a guide groove 52 opened in the transition member 5. The guide hole 51 is ventilatedly connected to the pressure regulating hole 81, the guide hole 51 is ventilatedly connected to the guide groove 52, the guide groove 52 is ventilatedly connected to the intake valve 55, and the pressure regulating valve 6 is biased by the biasing component 7 to close the pressure regulating hole 81 when the pressure regulating valve 6 is in the first position.

[0090] The pressure regulating hole 81 is opposite to the flow guiding hole 51 , and in the first position, the pressure regulating valve 6 passes through the flow guiding hole 51 and is sealed against the periphery of the pressure regulating hole 81 to be biased.

[0091] In some optional embodiments, the guide hole 51 includes a first hole section 511 close to the retaining member 8 and a second hole section 512 away from the retaining member 8, the aperture of the second hole section 512 is smaller than the aperture of the first hole section 511, and a limit platform 513 is provided at the connection point between the second hole section 512 and the first hole section 511, and when the pressure regulating valve 6 is in the second position, the limit platform 513 limits the stroke of the pressure regulating valve 6.

[0092] Therefore, when the air pressure in the pressure chamber 401 is greater than the threshold value, the pressure regulating valve 6 moves downward under the action of the air pressure to compress the biasing component 7, thereby abutting against the limit platform 513. At this time, a gap is generated between the pressure regulating valve 6 and the pressure regulating hole 8 to open the pressure regulating channel, so that the pressure chamber 401 is connected to the intake valve 55 through the pressure regulating channel to achieve high-pressure gas reflux; when the air pressure in the pressure chamber 401 is less than the threshold value, the pressure regulating valve 6 moves upward under the elastic force of the biasing component 7 to pass through the guide hole 51 and seal against the periphery of the pressure regulating hole 81 to be biased, thereby closing the pressure regulating channel.

[0093] In some optional embodiments, the guide groove 52 is opened on one side of the transition piece 5 close to the retaining piece 8, the guide hole 51 is opened in the middle of the transition piece 5, one end of the guide groove 52 is connected to the guide hole 51 and the other end is connected to the accommodating space 20, and the groove edge of the guide groove 52 is sealed against the retaining piece 8.

[0094] Preferably, a sealing member 53 may be provided between the groove edge of the guide groove 52 and the retaining member 8 , so that a sealing contact is achieved between the groove edge of the guide groove 52 and the retaining member 8 .

[0095] Specifically, the seal 53 can be arranged along the inner wall of the guide groove 52, and the height of the seal 53 is greater than the depth of the guide groove 52, that is, the seal 53 extends out of the surface of the transition piece 5 where the guide groove 52 is located, so that the groove edge of the guide groove 52 is sealed and abutted against the retaining piece 8.

[0096] Alternatively, the seal 53 may be disposed along the groove edge of the guide groove 52 , that is, the seal 53 is attached to the surface of the transition piece 5 where the guide groove 52 is located along the groove edge of the guide groove 52 , so that the groove edge of the guide groove 52 is sealed against the retaining piece 8 .

[0097] In some optional embodiments, the sealing member 53 may be, but is not limited to, a rubber ring, a rubber strip, etc.

[0098] In some other optional embodiments, such as Fig. 9 As shown, the diaphragm carrier 21 is used to support and install the diaphragm 3 . Meanwhile, a guide groove 211 is provided on the diaphragm carrier 21 , and the biasing component 7 is received in the guide groove 211 .

[0099] The first end of the biasing component 7 abuts against the pressure regulating valve 6 , and the second end of the biasing component 7 extends into the guide groove 211 and abuts against the bottom of the guide groove 211 .

[0100] In addition, a first positioning column 212 is provided in the guide groove 211 to enable the biasing component 7 to be sleeved. The second end of the biasing component 7 extends into and is assembled in the guide groove 211 and sleeved on the first positioning column 212, thereby limiting the biasing component 7 and guiding it during the extension and retraction process.

[0101] In addition, in some optional embodiments, a positioning groove connected to the biasing component 7 is provided on the pressure regulating valve 6, and the first end of the biasing component 7 is positioned in the positioning groove, and / or a second positioning column connected to the biasing component 7 is provided on the pressure regulating valve 6, so that the first end of the biasing component 7 is assembled in the positioning groove and sleeved on the second positioning column, thereby realizing the limiting and telescopic guiding of the biasing component 7.

[0102] In addition, in some optional embodiments, the diaphragm pump disclosed in this embodiment further includes at least one air distribution valve, and the at least one air distribution valve is ventilatedly connected between the air outlet valve 83 and the pressure chamber 401 .

[0103] Preferably, the gas distribution valve can be a solenoid valve, such as a two-position three-way solenoid valve or a three-position three-way solenoid valve, which is arranged between the outlet valve 83 and the pressure chamber 401, and can adjust and distribute the gas state. Therefore, the diaphragm pump of the utility model is constituted as a pump-valve integrated structure.

[0104] In the diaphragm pump of the present invention, the airway plate 4 , the diaphragm carrier 21 , the valve component and the housing 22 are assembled and fixed by the fastener 9 .

[0105] Specifically, a first locking portion 43 is provided on the airway plate 4, and a second locking portion 222 is provided on the shell 22. The two ends of the fastener 9 are respectively fastened and connected to the first locking portion 43 and the second locking portion 222, thereby strengthening the assembly strength between the airway plate 4, the diaphragm carrier 21, the valve component and the shell 22.

[0106] In some optional embodiments, the diaphragm pump also optimizes the air path between the accommodating space 20 and the valve component.

[0107] Continue to see Figure 6-Figure 9, the diaphragm carrier 21, the transition piece 5 and the retaining piece 8 are respectively provided with a plurality of through holes, such as a plurality of first through holes 213 provided through the diaphragm carrier 21 along the thickness direction, a plurality of second through holes 54 provided through the transition piece 5 along the thickness direction, and a plurality of third through holes 82 provided through the retaining piece 8 along the thickness direction. The plurality of first through holes 213 correspond to the plurality of second through holes 54 one by one, respectively, and the plurality of second through holes 54 correspond to the plurality of third through holes 82 one by one, thereby forming a conducting air path of the valve component. Since the valve component is sealed and disposed between the airway plate 4 and the housing 22 and divides the accommodation space 20 into two halves, the conducting air path constitutes a conducting air path connecting the two halves of the accommodation space 20.

[0108] In addition, in some embodiments, the guide groove 52 is provided with the above-mentioned second through hole 54 to realize ventilation communication between the guide groove 52 and the accommodating space 20. Therefore, when the pressure regulating channel is opened, the gas enters the guide groove 52 through the pressure regulating hole 81, and then enters the accommodating space 20 of the housing 2 through the second through hole 54, and is recycled.

[0109] The embodiment of the utility model also provides a pneumatic comfort system, which can be one or more of a pneumatic massage system, a pneumatic lumbar support system and a pneumatic wing support system. The pneumatic comfort system includes an air bag, a gas distribution device and the above-mentioned diaphragm pump, wherein the air bag is ventilatedly connected to the diaphragm pump through the gas distribution device.

[0110] Specifically, the gas distribution device is connected to the gas outlet 41 of the airway plate 4 through the air pipe. When the pneumatic comfort system is working, the gas output by the diaphragm pump is discharged through the gas outlet 41, and is transported to the air bag after being distributed by the gas distribution device. The gas distribution device controls the inflation and deflation of the air bag.

[0111] Among them, according to the type of pneumatic comfort system, the air bag can be a lumbar support air bag, a wing support air bag, a massage air bag, etc., which can be inflated by a diaphragm pump to achieve the effect of pneumatic support and massage. The gas distribution device can be selected but not limited to a solenoid valve module, a fluid oscillator, etc., which can be connected to one or more air bags and cooperate with a diaphragm pump to control the inflation, deflation or pressure maintenance of the air bag.

[0112] The pneumatic comfort system provided by the embodiment of the utility model adopts a diaphragm pump to inflate the air bag, so that the diaphragm pump can achieve high-pressure pressure regulation during the air supply process and achieve the effect of internal circulation of gas, thereby improving the gas utilization efficiency and reducing noise.

[0113] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0114] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0115] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0116] Although the utility model is described in conjunction with the above specific embodiments, it is obvious that those skilled in the art can make many substitutions, modifications and changes based on the above content. Therefore, all such substitutions, improvements and changes are included in the spirit and scope of the appended claims.

Claims

1. A diaphragm pump, characterized in that: include: Diaphragm (3); a valve member, wherein a pump chamber is defined between the valve member and the diaphragm (3); the valve member comprises an inlet valve (55) and an outlet valve (83), wherein the inlet valve (55) is in ventilated communication with the pump chamber and is configured to supply gas to the pump chamber, and the outlet valve (83) is in ventilated communication with the pump chamber and is configured to discharge gas from the pump chamber; a pressure chamber (401) in ventilated communication with the gas outlet valve (83) and configured to receive gas exhausted from the pump chamber; A pressure regulating channel, ventilated and connected between the pressure chamber (401) and the air inlet valve (55); A pressure regulating valve (6) is arranged in the pressure regulating channel, and has a first position for closing the pressure regulating channel when the air pressure in the pressure chamber (401) is less than a threshold value, and a second position for opening the pressure regulating channel when the air pressure in the pressure chamber (401) is greater than the threshold value.

2. The diaphragm pump according to claim 1, characterized in that: The diaphragm pump further comprises a biasing member (7) which is elastically deformable and biases the pressure regulating valve (6) so that the pressure regulating valve (6) is in the first position.

3. The diaphragm pump according to claim 2, characterized in that: The valve component comprises a retaining member (8) and a transition member (5), wherein the transition member (5) is arranged between the retaining member (8) and the diaphragm (3); The pressure regulating passage comprises a pressure regulating hole (81) provided in the retaining member (8), a guide hole (51) and a guide groove (52) provided in the transition member (5); the pressure regulating hole (81) is ventilated and connected to the pressure chamber (401); the guide hole (51) is ventilated and connected to the pressure regulating hole (81); the guide hole (51) is ventilated and connected to the guide groove (52); the guide groove (52) is ventilated and connected to the intake valve (55); when the pressure regulating valve (6) is in the first position, the biasing component (7) performs a biasing action to close the pressure regulating hole (81).

4. The diaphragm pump according to claim 3, characterized in that: The pressure regulating hole (81) is opposite to the flow guide hole (51), and when in the first position, the pressure regulating valve (6) passes through the flow guide hole (51) and is sealed against the periphery of the pressure regulating hole (81) to be biased.

5. The diaphragm pump according to claim 4, characterized in that: The guide hole (51) comprises a first hole section (511) close to the retaining member (8) and a second hole section (512) far from the retaining member (8); the aperture of the second hole section (512) is smaller than the aperture of the first hole section (511); a limit platform (513) is provided at the connection between the second hole section (512) and the first hole section (511); and when the pressure regulating valve (6) is in the second position, the limit platform (513) limits the stroke of the pressure regulating valve (6).

6. The diaphragm pump according to claim 3, characterized in that: The guide groove (52) is opened on a side of the transition piece (5) close to the retaining piece (8), and the groove edge of the guide groove (52) is sealed against the retaining piece (8).

7. The diaphragm pump according to claim 3, characterized in that: The air inlet valve (55) is arranged on the transition piece (5), and the air outlet valve (83) is arranged on the retaining piece (8). The transition piece (5) has a first air hole (56) for ventilating the pump chamber and the air outlet valve (83), and the retaining piece (8) has a second air hole (84) for ventilating the air inlet valve (55) and the accommodating space (20) in the housing (2) of the diaphragm pump.

8. The diaphragm pump according to claim 2, characterized in that: The diaphragm pump further comprises a diaphragm carrier (21), wherein the diaphragm carrier (21) supports the diaphragm (3), and a guide groove (211) is provided on the diaphragm carrier, wherein the biasing component (7) is received in the guide groove (211).

9. The diaphragm pump according to any one of claims 1 to 8, characterized in that: It also includes at least one gas distribution valve, which is ventilatedly connected between the gas outlet valve (83) and the pressure chamber (401).

10. A pneumatic comfort system, characterized in that: include: Airbags; Gas distribution device; And the diaphragm pump according to any one of claims 1 to 9, wherein the air bag is ventilatedly connected to the diaphragm pump through the gas distribution device.

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