Air bag inflation and deflation control system

Abstract

The invention discloses an air bag inflation and deflation control system which comprises an air pump, a plurality of air bags and an inflation and deflation control device, the inflation and deflation control device comprises a support, a first control valve set and a second control valve set, the first control valve set and the second control valve set are arranged on the support, and the first control valve set comprises a plurality of first control valves in one-to-one correspondence with the air bags; the second control valve group comprises a plurality of second control valves in one-to-one correspondence with the air bags; the inflation and deflation control device comprises an air pump, a first control valve group, a second control valve group and an exhaust valve, and has the beneficial effects that the inflation and deflation control device is composed of the air pump, the first control valve group, the second control valve group and the exhaust valve, and the first control valve group, the second control valve group and the exhaust valve are adjusted to be matched in various states; therefore, five functions of an inflation function, a pressure maintaining function, a slow exhaust function, a quick exhaust function and an air exhaust function can be achieved, and due to the fact that the air bag has the quick exhaust function and the slow exhaust function, the deflation speed of the air bag can be adjusted.

Description

Technical Field

[0001] The present invention relates to the technical field of inflation and deflation systems, and in particular to an air bag inflation and deflation control system. Background Art

[0002] Airbags are widely used in massage chairs. They can wrap or press points on the arms, legs, buttocks, etc., so as to achieve massage of multiple parts of the body. For example, when the airbags are inflated, they will cling to and squeeze the human body parts, simulating the feeling of a human hand massage; when the airbags are deflated, they will loosen up and bring a relaxing feeling to the human body parts. By constantly inflating and deflating, the airbags can continuously massage the human body, helping users relieve fatigue and relax.

[0003] The Chinese utility model patent (authorization announcement number: CN219681090U) provides a massage chair airbag rapid deflation device, including a massage airbag, a deflation device, an air pipe, an air valve and an air pump, wherein the air pump is connected to the air valve, the deflation device includes a cavity, the cavity is provided with a first joint, a second joint and a deflation port, a spring and a movable valve core are provided in the cavity, the spring is sleeved on the movable valve core, and one end of the spring is pressed against the deflation port, and the other end is pressed against the end of the movable valve core, the air valve is connected to the first joint through the air pipe, and the second joint is connected to the massage airbag; when the air pump is working, the air valve is energized during inflation, and the gas passes through the air valve and the air pipe to squeeze the movable valve core, so that the first joint and the second joint are gas-connected to inflate the massage airbag; when deflation occurs, the air valve is de-energized, the gas stops inletting, the spring is reset to press the movable valve core against the first joint, so that the second joint is gas-connected with the deflation port, and the gas in the massage airbag is deflated through the deflation port.

[0004] In the above prior art, when inflating, the air valve is energized, and the gas passes through the air valve and the air pipe to squeeze the valve core, so that the first joint and the second joint are connected to inflate the massage airbag; when deflated, the air valve is de-energized, the gas stops entering, and the spring resets to press the movable valve core against the first joint, so that the second joint is connected to the deflation port, and the gas in the massage airbag is deflated through the deflation port. Each massage airbag can be provided with one or more deflation devices, and providing multiple deflation devices will make the airbag deflate faster.

[0005] The defects of the above-mentioned prior art are that: the deflation device and the air valve can only realize two functions of inflation and deflation, and the functions that can be realized are the basic inflation and deflation functions, so the functions are relatively simple, and the air pump can only be used for inflation, and if the deflation rate needs to be increased, multiple deflation devices need to be set on the airbag, so in order to increase the deflation rate will lead to an increase in cost, so the above-mentioned shortcomings need to be improved urgently. Summary of the invention

[0006] The purpose of the present invention is to solve the above problems. The present invention provides an airbag inflation and deflation control system, which has the advantage of diversified functions.

[0007] To achieve the above object, the present invention provides the following technical solutions: an airbag inflation and deflation control system, comprising an air pump, a plurality of airbags and an inflation and deflation control device, the inflation and deflation control device comprising a bracket, a first control valve group and a second control valve group respectively arranged on the bracket, the first control valve group comprising a plurality of first control valves corresponding to the airbags one by one, the second control valve group comprising a plurality of second control valves corresponding to the airbags one by one; the inflation and deflation control device further comprising an exhaust valve; The first control valve is a two-way solenoid valve, and the first control valve has a first air inlet and a first air outlet. When the first control valve is powered on, the first air inlet is connected to the first air outlet, and when the first control valve is powered off, the first air inlet is disconnected from the first air outlet. The second control valve is a three-way solenoid valve, and the second control valve has a second air inlet, a second air outlet and an exhaust port. When the second control valve is powered on, the second air inlet is connected to the second air outlet, and when the second control valve is powered off, the second air outlet is connected to the exhaust port. The exhaust valve is a two-way solenoid valve, and the exhaust valve has a third air inlet and a third air outlet. When the exhaust valve is powered on, the third air inlet and the third air outlet are connected, and when the exhaust valve is powered off, the third air inlet and the third air outlet are cut off; The first air inlet and the third air inlet are both connected to the output end of the air pump, the second air outlet is connected to the input end of the air pump, and each air bag is respectively connected to the first air outlet of the corresponding first control valve and the second air inlet of the corresponding second control valve; The exhaust port and the third air outlet are both connected to the atmosphere.

[0008] Preferably, the bracket includes a first mounting frame, a second mounting frame and a connecting plate, the connecting plate is arranged between the first mounting frame and the second mounting frame, the first mounting frame is used to install the first control valve, the second mounting frame is used to install the second control valve, the connecting plate is provided with a first connecting hole, the first mounting frame is provided with a first mounting hole corresponding to the first connecting hole, the second mounting frame is provided with a second mounting hole corresponding to the first connecting hole, and the first connecting hole, the first mounting hole and the second mounting hole are provided with connecting parts for fixing the first mounting frame, the second mounting frame and the connecting plate together.

[0009] Preferably, both end surfaces of the connecting plate are provided with placement grooves, and the placement grooves on the two end surfaces are respectively used for positioning and installing the first mounting bracket and the second mounting bracket.

[0010] Preferably, both end surfaces of the connecting plate are provided with placement grooves, the first mounting frame is provided with a first circuit board, and the second mounting frame is provided with a second circuit board.

[0011] Preferably, the first control valve comprises a first valve body and a first coil assembly arranged in cooperation with the first valve body, the first valve body is arranged on the first mounting frame, the first coil assembly comprises a first coil body and a first coil skeleton, the first coil body is wound around the outer circumference of the first coil skeleton, a first conductive pin is arranged at the bottom of the first coil skeleton, a lead of the first coil body is electrically connected to the first conductive pin, and the first conductive pin is welded to the first circuit board; The second control valve includes a second valve body and a second coil assembly arranged in cooperation with the second valve body. The second valve body is arranged on the second mounting frame. The second coil assembly includes a second coil body and a second coil frame. The second coil body is wound around the outer circumference of the second coil frame. A second conductive pin is provided at the bottom of the second coil frame. The lead of the second coil body is electrically connected to the second conductive pin, and the second conductive pin is welded to the second circuit board.

[0012] Preferably, the first control valve and the exhaust valve are normally closed two-position two-way solenoid valves, and the second control valve is a two-position three-way solenoid valve.

[0013] Preferably, the shell comprises an upper shell and a lower shell, and the upper shell and the lower shell are detachably plugged together.

[0014] Preferably, a mounting platform is provided on the lower shell, a second connecting hole is provided on the connecting plate, an insertion shaft is provided on the mounting platform and is plugged into and matched with the second connecting hole, a fixing platform corresponding to the mounting platform is provided in the upper shell, and a socket is provided on the fixing platform and is plugged into and matched with the plug shaft.

[0015] Preferably, a plurality of connecting frames are provided on the outer wall of the lower shell body, and the connecting frames are provided with through holes.

[0016] Preferably, a first connecting pipe is provided between the first control valve and the air pump, the first connecting pipe comprising a first main pipe and first branch pipes corresponding to the number of the first control valves, the first branch pipes are respectively connected to the first air inlets of the corresponding first control valves, one end of the first main pipe is connected to the air outlet of the air pump, and the other end of the first main pipe is connected to the third air inlet of the exhaust valve.

[0017] A second connecting pipe is provided between the second control valve and the air pump, and the second connecting pipe includes a second main pipe and second branch pipes equal in number to the second control valves, the second branch pipes are respectively connected to the second air outlets of the corresponding second control valves, one end of the second main pipe is connected to the air inlet of the air pump, and the other end of the second main pipe is blocked.

[0018] Compared with the prior art, the present invention has the following beneficial effects: The present invention provides an airbag inflation and deflation control system, which is composed of an inflation and deflation control device including an air pump, a first control valve group, a second control valve group and an exhaust valve. By adjusting the coordination of the first control valve group, the second control valve group and the exhaust valve in various states, five functions can be realized: inflation function, pressure maintaining function, slow exhaust function, fast exhaust function and vacuum function. Since the present application has fast exhaust and slow exhaust functions, the speed of airbag deflation can be adjusted. In addition, the vacuum function can exhaust the gas in the airbag. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a partial three-dimensional structural schematic diagram of the present invention; Figure 3 It is a three-dimensional structural schematic diagram of the first control valve group, the second control valve group and the connecting plate of the present invention; Figure 4 It is a schematic diagram of the three-dimensional structure of the first control valve of the present invention; Figure 5 is a schematic diagram of the three-dimensional structure of the second control valve of the present invention; Figure 6 It is a schematic diagram of the three-dimensional structure of the first connector, the second connector, the third connector and the fourth connector of the present invention; Figure 7 It is a schematic diagram of the three-dimensional structure of the upper shell of the present invention; Figure 8 It is a schematic diagram of the three-dimensional structure of the lower shell of the present invention; Fig. 9 It is a schematic diagram of the three-dimensional structure of the first connecting pipe and the second connecting pipe of the present invention; Fig.10 It is a schematic diagram of the three-dimensional structure of the connecting plate of the present invention; Fig.11 It is a structural principle diagram of the present invention.

[0020] Description of the drawings: 1. Shell; 10. Connecting plate; 100. Placement slot; 101. First connecting hole; 102. Second connecting hole; 11. Upper shell; 110. Plug hole; 111. Fixing platform; 12. Lower shell; 121. Connecting frame; 1210. Through hole; 13. Mounting platform; 131. Insertion shaft; 2. Air pump; 21. Air outlet; 22. Air inlet; 3. Air bag; 4. First control valve group; 41. First mounting frame; 410. First mounting hole; 42. First circuit board; 43. First socket; 44. First conductive pin; 45. First control valve; 451. First valve body; 452. First coil skeleton; 453. First coil body; 5. Second control valve group; 51. Second mounting frame; 510. Second mounting hole; 52. Second circuit board; 53. Second socket; 54. Second conductive pin; 55. Second control valve; 551. Second valve body; 552. Second coil skeleton; 553. Second coil body; 6. Exhaust valve; 71. First connecting pipe; 711. First main pipe; 712. First branch pipe; 72. Second connecting pipe; 721. Second main pipe; 722. Second branch pipe; 73. Three-way connecting pipe; 81. First connector; 811. First protrusion; 812. Second protrusion; 82. Second connector; 821. Third protrusion; 822. Fourth protrusion; 83. Third connector; 831. Fifth protrusion; 832. Sixth protrusion; 84. Fourth connector; 841. Seventh protrusion; 842. Eighth protrusion. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. 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.

[0022] like Figure 1 - Fig.11 As shown, an airbag inflation and deflation control system includes an air pump 2, a plurality of airbags 3 and an inflation and deflation control device, the inflation and deflation control device includes a bracket, a first control valve group 4 and a second control valve group 5 respectively arranged on the bracket, the first control valve group 4 includes a plurality of first control valves 45 corresponding to the airbags 3 one by one, the second control valve group 5 includes a plurality of second control valves 55 corresponding to the airbags 3 one by one; the inflation and deflation control device also includes an exhaust valve 6; The first control valve 45 is a two-way solenoid valve, and has a first air inlet and a first air outlet. When the first control valve 45 is powered on, the first air inlet is connected to the first air outlet, and when the first control valve 45 is powered off, the first air inlet is disconnected from the first air outlet. The second control valve 55 is a three-way solenoid valve, and has a second air inlet, a second air outlet and an exhaust port. When the second control valve 55 is powered on, the second air inlet is connected to the second air outlet, and when the second control valve 55 is powered off, the second air outlet is connected to the exhaust port. The exhaust valve 6 is a two-way solenoid valve, and the exhaust valve 6 has a third air inlet and a third air outlet. When the exhaust valve 6 is powered on, the third air inlet and the third air outlet are connected, and when the exhaust valve 6 is powered off, the third air inlet and the third air outlet are cut off. The first air inlet and the third air inlet are both connected to the output end of the air pump 2, the second air outlet is connected to the input end of the air pump 2, and each air bag 3 is respectively connected to the first air outlet of the corresponding first control valve 45 and the second air inlet of the corresponding second control valve 55; The exhaust port and the third air outlet are both connected to the atmosphere.

[0023] refer to Figure 2-Figure 3 The bracket includes a first mounting frame 41, a second mounting frame 51 and a connecting plate 10, wherein the connecting plate 10 is used to fix the first mounting frame 41 and the second mounting frame 51, and the connecting plate 10 is arranged between the first mounting frame 41 and the second mounting frame 51, the first mounting frame 41 is used to install the first control valve 45, and the second mounting frame 51 is used to install the second control valve 55, and the connecting plate 10 is provided with a first connecting hole 101, and the first mounting frame 41 is provided with a first mounting hole corresponding to the first connecting hole 101 410, the second mounting frame 51 is provided with a second mounting hole 510 that cooperates with the first connecting hole 101, and the first connecting hole 101, the first mounting hole 410 and the second mounting hole 510 are coaxially arranged, and the first mounting frame 41 and the second mounting frame 51 are fixedly installed on the connecting plate 10 by installing bolts and nuts (not shown in the figure) in the first connecting hole 101, the first mounting hole 410 and the second mounting hole 510. In the present application, the number of the first connecting hole 101, the first mounting hole 410 and the second mounting hole 510 is at least two.

[0024] refer to Fig.10 For further optimization, both end surfaces of the connecting plate 10 are provided with placement grooves 100, and the placement grooves 100 on the two end surfaces are respectively used for positioning and installing the first mounting frame 41 and the second mounting frame 51.

[0025] In the present application, there are four first control valves 45 and four second control valves 55, and the four first control valves 45 and the second control valves 55 are arranged one by one on the two end surfaces of the connecting plate 10, each group of corresponding first control valves 45 and second control valves 55 is separately connected to an airbag 3, and all the first control valves 45 and the second control valves 55 are connected to the same air pump 2, so the present application can control the inflation and deflation of four airbags 3 at the same time by one air pump 2.

[0026] refer to Figure 3 A first circuit board 42 is provided at the bottom of the first mounting frame 41 , a first socket 43 is provided at the bottom of the first circuit board 42 , the first socket 43 is used for external electrical signals, and the first socket 43 and the first control valve 45 are electrically arranged on the first circuit board 42 .

[0027] A second circuit board 52 is disposed at the bottom of the second mounting frame 51 . A second socket 53 is disposed at the bottom of the second circuit board 52 . The second socket 53 is used for externally connecting an electrical signal. The second socket 53 and the second control valve 55 are both electrically disposed on the second circuit board 52 .

[0028] refer to Figure 4 The first control valve 45 includes a first valve body 451 and a first coil assembly arranged in cooperation with the first valve body 451. The first valve body 451 is arranged on the first mounting frame 41. The first coil assembly includes a first coil body 453 and a first coil skeleton 452. The first coil body 453 is wound around the outer periphery of the first coil skeleton 452. A first conductive pin 44 is provided at the bottom of the first coil skeleton 452. The lead of the first coil body 453 is electrically connected to the first conductive pin 44. The first conductive pin 44 is welded to the first circuit board 42.

[0029] refer to Figure 5 The second control valve 55 includes a second valve body 551 and a second coil assembly arranged in cooperation with the second valve body 551. The second valve body 551 is arranged on the second mounting frame 51. The second coil assembly includes a second coil body 553 and a second coil skeleton 552. The second coil body 553 is wound around the outer periphery of the second coil skeleton 552. A second conductive pin 54 is provided at the bottom of the second coil skeleton 552. The lead of the second coil body 553 is electrically connected to the second conductive pin 54. The second conductive pin 54 is welded to the second circuit board 52.

[0030] refer to Fig.11, the first control valve 45 has an A port and a B port, and the first control valve 45 has a first state and a second state. When the first control valve 45 is in the first state, the A port and the B port are cut off. When the first control valve 45 is in the second state, the A port and the B port are connected. In this application, all A ports are first air inlets, and all B ports are first air outlets; The second control valve 55 has a C port, a D port and an E port. The second control valve 55 has a third state and a fourth state. When the second control valve 55 is in the third state, the C port is connected to the E port and the D port is cut off from the C port and the E port. When the second control valve 55 is in the fourth state, the C port is connected to the D port, the E port is cut off from the C port and the E port is cut off from the D port. In the present application, all C ports are second air outlets, all D ports are second air inlets, all E ports are exhaust ports, and the E port is connected to the atmosphere. The exhaust valves 6 each have an F port and a G port, and each exhaust valve 6 has a fifth state and a sixth state. When the exhaust valve 6 is in the fifth state, the F port and the G port are cut off, and when the exhaust valve 6 is in the sixth state, the F port and the G port are connected. In the present application, the F port is the third air inlet, the G port is the third air outlet, and the G port is connected to the atmosphere.

[0031] The present application can realize the following functions through the cooperation of the first control valve 45 , the second control valve 55 and the exhaust valve 6 : an inflation function, a pressure maintaining function, a slow exhaust function, a fast exhaust function and an air pumping function.

[0032] Inflation function: When the airbag 3 needs to be inflated, the first control valve 45 is energized, and the second control valve 55 and the exhaust valve 6 are de-energized, so that the first control valve 45 is in the second state, the second control valve 55 is in the third state, and the exhaust valve 6 is in the fifth state, and the air pump 2 is started, so that the airbag 3 is inflated by the air pump 2, and the gas enters the A port of the first control valve 45 through the outlet 21 of the air pump 2, and the gas then enters the airbag 3 after being discharged through the B port of the first control valve 45.

[0033] Pressure-maintaining function: When the airbag 3 needs to be pressurized, the first control valve 45 and the second control valve 55 are powered off, so that the first control valve 45 is in the first state, the second control valve 55 is in the third state, and the air pump 2 is closed, so that the airbag 3 can achieve the pressure-maintaining function.

[0034] Slow exhaust function: when the airbag 3 needs to be slowly exhausted, the first control valve 45 and the exhaust valve 6 are powered off, and the second control valve 55 is powered on, so that the first control valve 45 is in the first state, the second control valve 55 is in the fourth state, the exhaust valve 6 is in the fifth state, and the air pump 2 is closed. In addition, an exhaust chamber is provided in the air pump 2 (the DC air pump 2 has an exhaust chamber as a prior art, so it is not shown in the figure), and the gas exhausted from the airbag 3 enters the exhaust chamber. After the gas is discharged through the airbag 3, it is discharged into the exhaust chamber of the air pump 2 through the D port and then through the C port.

[0035] Quick exhaust function: when the airbag 3 needs to be exhausted quickly, the first control valve 45 is powered off, and the second control valve 55 and the exhaust valve 6 are powered on, so that the first control valve 45 is in the first state, the second control valve 55 is in the fourth state, and the exhaust valve 6 is in the sixth state, and the air pump 2 is started, and the air in the airbag 3 is extracted faster through the air pump 2, thereby increasing the exhaust speed of the airbag 3, and the gas extracted in the airbag 3 passes through the air pump 2 and then discharged into the atmosphere through the G port of the exhaust valve 6. After the gas is discharged through the airbag 3, it passes through the D port and then the C port and enters the air inlet 22 of the air pump 2, and then passes through the air outlet 21 of the air pump 2 and is discharged into the atmosphere from the G port of the exhaust valve 6.

[0036] Vacuuming function: when it is necessary to evacuate the airbag 3, the first control valve 45 is powered off, and the second control valve 55 and the exhaust valve 6 are powered on, so that the first control valve 45 is in the first state, the second control valve 55 is in the fourth state, and the exhaust valve 6 is in the sixth state, and the air pump 2 is started, and the air in the airbag 3 is quickly extracted through the air pump 2, and the gas extracted in the airbag 3 passes through the air pump 2 and then discharged into the atmosphere through the G port of the exhaust valve 6; the difference between the vacuuming function and the quick exhaust function is that the vacuuming function can evacuate the gas in the airbag 3 until it is deflated; after the gas is discharged through the airbag 3, it passes through the D port and then the C port to enter the air inlet 22 of the air pump 2, and then passes through the air outlet 21 of the air pump 2 and is discharged into the atmosphere from the G port of the exhaust valve 6.

[0037] The first control valve 45 and the exhaust valve 6 are normally closed two-position two-way solenoid valves, and the second control valve 55 is a two-position three-way solenoid valve.

[0038] refer to Figure 2 and Fig. 9 A first connecting pipe 71 is provided between the first control valve 45 and the air pump 2. The first connecting pipe 71 includes a first main pipe 711 and first branch pipes 712 corresponding to the number of the first control valves 45. The first branch pipes 712 are respectively connected to the first air inlets of the corresponding first control valves 45. One end of the first main pipe 711 is connected to the air outlet 21 of the air pump 2, and the other end of the first main pipe 711 is connected to the third air inlet of the exhaust valve 6.

[0039] A second connecting pipe 72 is provided between the second control valve 55 and the air pump 2. The second connecting pipe 72 includes a second main pipe 721 and second branch pipes 722 whose number is equal to the second control valve 55. The second branch pipes 722 are respectively connected to the second air outlets of the corresponding second control valves 55. One end of the second main pipe 721 is connected to the air inlet 22 of the air pump 2, and the other end of the second main pipe 721 is blocked.

[0040] refer to Figure 6 , further optimized, the shell 1 is provided with a first connector 81, the first connector 81 has a first end and a second end, the first end of the first connector 81 is connected to the air inlet 22 of the air pump 2, the second end of the first connector 81 is connected to the second main pipe 721, the first end is provided with a first protrusion 811 on the periphery, the second end is provided with a second protrusion 812, the first protrusion 811 and the second protrusion 812 are truncated, and the diameter of the first protrusion 811 and the second protrusion 812 away from each other is smaller than the diameter of the side close to each other, the first connector 81 The first end is connected to the air inlet 22 of the air pump 2 through an air pipe (the air pipe is an ordinary air pipe in the prior art, so it is not shown in the figure, and the air pipe that appears later and the air pipe here are all ordinary air pipes), and the second end of the first connecting head 81 is inserted into the second main pipe 721. The maximum diameter of the first protrusion 811 is greater than the inner diameter of the second main pipe 721, and the maximum diameter of the second protrusion 812 is greater than the inner diameter of the air pipe. Therefore, when the first connecting head 81 is inserted into the air pipe and the second main pipe 721, the connection between the first connecting head 81 and the air pipe and the second main pipe 721 will not fall off.

[0041] The shell 1 is also provided with a second connector 82, and the first main pipe 711 is inserted with a third connector 83, the second connector 82 and the third connector 83 are elbows, the second connector 82 has a third end and a fourth end, and the third connector 83 has a fifth end and a sixth end, the third end of the second connector 82 is connected to the air outlet 21 of the air pump 2, the fourth end of the second connector 82 and the fifth end of the third connector 83 are connected through an air pipe, the sixth end of the third connector 83 is inserted into the first main pipe 711, and the third end of the second connector 82 is provided with a third protrusion 821, and the fourth end is provided with a fourth protrusion 822, the third protrusion 821 and the fourth protrusion 822 are truncated cone-shaped, and the diameter of the third protrusion 821 and the fourth protrusion 822 away from each other is smaller than the diameter of the side close to each other, and the third end of the second connector 82 is connected to the air outlet 21 of the air pump 2 through the air pipe; The fifth end of the third connecting head 83 is provided with a fifth protrusion 831 and the sixth end of the third connecting head 83 is provided with a sixth protrusion 832. The fifth protrusion 831 and the sixth protrusion 832 are truncated cone-shaped, and the diameter of the fifth protrusion 831 and the sixth protrusion 832 on the side away from each other is smaller than the diameter on the side close to each other. The maximum diameters of the fourth protrusion 822 and the fifth protrusion 831 are larger than the inner diameter of the air pipe connected to the fourth end and the fifth end, the maximum diameter of the sixth protrusion 832 is larger than the inner diameter of the first main pipe 711, and the maximum diameter of the third protrusion 821 is larger than the inner diameter of the air pipe connected to the air outlet 21 of the air pump 2, thereby ensuring that the connection between the second connecting head 82 and the air pipe and the connection between the third connecting head 83 and the air pipe and the first main pipe 711 will not be detached.

[0042] refer to Figure 2 A three-way connecting pipe 73 is provided between each pair of the first control valve 45 and the second control valve 55. The three-way connecting pipe 73 is respectively connected to the airbag 3, the air outlet 21 of the first control valve 45 and the air inlet 22 of the second control valve 55. The three-way connecting pipe 73 in the present application is in an "h" shape. In addition to the "h" shape, the three-way connecting pipe 73 can also be in a "Y" shape or other shapes with three connecting holes.

[0043] Further optimized, the shell 1 is provided with a fourth connector 84, the fourth connector 84 has a seventh end and an eighth end, the seventh end of the fourth connector 84 is connected to the airbag 3, the eighth end of the fourth connector 84 is connected to the three-way connecting pipe 73, the seventh end is provided with a seventh protrusion 841 on the periphery, the eighth end is provided with an eighth protrusion 842, the seventh protrusion 841 and the eighth protrusion 842 are truncated, and the diameter of the seventh protrusion 841 and the eighth protrusion 842 away from each other is smaller than that of the eighth protrusion 842. On the diameter of one side close to each other, the seventh end of the fourth connecting head 84 is connected to the airbag 3 through the trachea, and the eighth end of the fourth connecting head 84 is inserted into the three-way connecting tube 73. The maximum diameter of the seventh protrusion 841 is larger than the inner diameter of the three-way connecting tube 73, and the maximum diameter of the eighth protrusion 842 is larger than the inner diameter of the trachea. Therefore, when the fourth connecting head 84 is inserted into the trachea and the three-way connecting tube 73, the connection between the fourth connecting head 84 and the trachea and the three-way connecting tube 73 will not fall off.

[0044] refer to Figure 7 - Figure 8The inflation and deflation control device also includes a shell 1, which includes an upper shell 11 and a lower shell 12. The upper shell 11 and the lower shell 12 are detachably plugged together. A mounting platform 13 is provided on the lower shell 12. The connecting plate 10 is rectangular. In further optimization, the four corners of the connecting plate 10 are rounded. A second connecting hole 102 is provided on the connecting plate 10. A plug shaft 131 plugged with the second connecting hole 102 is provided on the mounting platform 13. At least one plug shaft 131 is provided on the mounting platform 13. In this application, There are two mounting platforms 13, and the two mounting platforms 13 are arranged at both ends of the connecting plate 10, and each mounting platform 13 is provided with two plug shafts 131, then there are four second connecting holes 102, and through the one-to-one correspondence between each second connecting hole 102 and the plug shaft 131, the upper shell 11 is provided with a fixing platform 111 corresponding to the mounting platform 13, and the fixing platform 111 is provided with a plug hole 110 corresponding to the plug shaft 131, and through the cooperation between the plug shaft 131 and the plug hole 110, the function of fixing the connecting plate 10 is achieved.

[0045] A plurality of connecting frames 121 are disposed on the outer wall of the lower shell 12 . The connecting frames 121 are provided with through holes 1210 . The lower shell 12 can be mounted on other equipment by using bolts.

[0046] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0047] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An airbag inflation and deflation control system, comprising an air pump (2), a plurality of airbags (3) and an inflation and deflation control device, characterized in that: The inflation and deflation control device comprises a bracket, a first control valve group (4) and a second control valve group (5) respectively arranged on the bracket, the first control valve group (4) comprising a plurality of first control valves (45) corresponding one-to-one to the airbags (3), and the second control valve group (5) comprising a plurality of second control valves (55) corresponding one-to-one to the airbags (3); the inflation and deflation control device further comprises an exhaust valve (6); The first control valve (45) is a two-way solenoid valve, the first control valve (45) having a first air inlet and a first air outlet, when the first control valve (45) is powered on, the first air inlet is connected to the first air outlet, and when the first control valve (45) is powered off, the first air inlet is disconnected from the first air outlet; The second control valve (55) is a three-way solenoid valve, and the second control valve (55) has a second air inlet, a second air outlet and an exhaust port. When the second control valve (55) is powered on, the second air inlet is connected to the second air outlet, and when the second control valve (55) is powered off, the second air outlet is connected to the exhaust port. The exhaust valve (6) is a two-way solenoid valve, and the exhaust valve (6) has a third air inlet and a third air outlet. When the exhaust valve (6) is energized, the third air inlet and the third air outlet are connected, and when the exhaust valve (6) is de-energized, the third air inlet and the third air outlet are cut off. The first air inlet and the third air inlet are both in communication with the output end of the air pump (2), the second air outlet is in communication with the input end of the air pump (2), and each air bag (3) is respectively in communication with the first air outlet of the corresponding first control valve (45) and the second air inlet of the corresponding second control valve (55); The exhaust port and the third air outlet are both connected to the atmosphere.

2. An airbag inflation and deflation control system according to claim 1, characterized in that: The bracket comprises a first mounting frame (41), a second mounting frame (51) and a connecting plate (10); the connecting plate (10) is arranged between the first mounting frame (41) and the second mounting frame (51); the first mounting frame (41) is used to mount the first control valve (45); the second mounting frame (51) is used to mount the second control valve (55); a first connecting hole (101) is provided on the connecting plate (10); a first mounting hole (410) corresponding to and matching the first connecting hole (101) is provided on the first mounting frame (41); a second mounting hole (510) matching the first connecting hole (101) is provided on the second mounting frame (51); and connecting pieces for fixing the first mounting frame (41), the second mounting frame (51) and the connecting plate (10) together are provided in the first connecting hole (101), the first mounting hole (410) and the second mounting hole (510).

3. An airbag inflation and deflation control system according to claim 2, characterized in that: Both end surfaces of the connection plate (10) are provided with placement grooves (100), and the placement grooves (100) on the two end surfaces are used to position and install the first mounting frame (41) and the second mounting frame (51), respectively.

4. An airbag inflation and deflation control system according to claim 3, characterized in that: A first circuit board (42) is provided on the first mounting frame (41), and a second circuit board (52) is provided on the second mounting frame (51).

5. An airbag inflation and deflation control system according to claim 4, characterized in that: The first control valve (45) comprises a first valve body (451) and a first coil assembly arranged in cooperation with the first valve body (451); the first valve body (451) is arranged on the first mounting frame (41); the first coil assembly comprises a first coil body (453) and a first coil frame (452); the first coil body (453) is wound around the outer periphery of the first coil frame (452); a first conductive pin (44) is provided at the bottom of the first coil frame (452); a lead of the first coil body (453) is electrically connected to the first conductive pin (44); and the first conductive pin (44) is welded to the first circuit board (42); The second control valve (55) comprises a second valve body (551) and a second coil assembly arranged in cooperation with the second valve body (551); the second valve body (551) is arranged on the second mounting frame (51); the second coil assembly comprises a second coil body (553) and a second coil skeleton (552); the second coil body (553) is wound around the outer periphery of the second coil skeleton (552); a second conductive pin (54) is provided at the bottom of the second coil skeleton (552); a lead of the second coil body (553) is electrically connected to the second conductive pin (54); and the second conductive pin (54) is welded to the second circuit board (52).

6. An airbag inflation and deflation control system according to claim 1, characterized in that: The first control valve (45) and the exhaust valve (6) are normally closed two-position two-way solenoid valves, and the second control valve (55) is a two-position three-way solenoid valve.

7. An airbag inflation and deflation control system according to claim 2, characterized in that: The inflation and deflation control device further comprises a housing (1), wherein the housing (1) comprises an upper housing (11) and a lower housing (12), wherein the upper housing (11) and the lower housing (12) are detachably plugged into each other.

8. An airbag inflation and deflation control system according to claim 7, characterized in that: The lower shell (12) is provided with a mounting platform (13), the connecting plate (10) is provided with a second connecting hole (102), the mounting platform (13) is provided with an insertion shaft (131) that plugs and matches with the second connecting hole (102), and the upper shell (11) is provided with a fixing platform (111) corresponding to the mounting platform (13), and the fixing platform (111) is provided with a plug hole (110) that plugs and matches with the plug shaft (131).

9. An airbag inflation and deflation control system according to claim 7, characterized in that: A plurality of connection frames (121) are provided on the outer wall of the lower shell (12), and a through hole (1210) is provided on the connection frame (121).

10. An airbag inflation and deflation control system according to claim 1, characterized in that: A first connecting pipe (71) is provided between the first control valve (45) and the air pump (2), the first connecting pipe (71) comprising a first main pipe (711) and first branch pipes (712) corresponding in number to the number of the first control valves (45), the first branch pipes (712) being respectively connected to the first air inlet of the corresponding first control valve (45), one end of the first main pipe (711) being connected to the air outlet (21) of the air pump (2), and the other end of the first main pipe (711) being connected to the third air inlet of the exhaust valve (6); A second connecting pipe (72) is provided between the second control valve (55) and the air pump (2), the second connecting pipe (72) comprising a second main pipe (721) and second branch pipes (722) equal in number to the second control valve (55), the second branch pipes (722) being respectively connected to the second air outlets of the corresponding second control valves (55), one end of the second main pipe (721) being connected to the air inlet (22) of the air pump (2), and the other end of the second main pipe (721) being blocked.

Images