Air bag inflation and deflation control device

Abstract

The utility model discloses an air bag inflation and deflation control device which comprises an air bag and an air pump, a first electromagnetic valve is arranged between the air bag and an air outlet of the air pump, a second electromagnetic valve is arranged between an air inlet of the air pump and the air bag, and a third electromagnetic valve is arranged between an air outlet of the air pump and the first electromagnetic valve. The first electromagnetic valve and the third electromagnetic valve are normally closed type two-position two-way electromagnetic valves, and the second electromagnetic valve is a two-position three-way electromagnetic valve. The air bag assembly device has the beneficial effects that the first electromagnetic valve, the second electromagnetic valve and the third electromagnetic valve are all arranged outside the air bag, so that the assembly efficiency is higher; in addition, through cooperation of the first electromagnetic valve, the second electromagnetic valve and the third electromagnetic valve, the inflation function, the pressure maintaining function, the slow exhaust function, the fast exhaust function and the air exhaust function can be achieved, the exhaust speed can be further increased by starting the air pump during fast exhaust, and the structure used for adjusting the exhaust speed is simpler.

Description

Technical Field

[0001] This utility model relates to the technical field of inflation and deflation devices, and in particular to an airbag inflation and deflation control device. Background Technology

[0002] Airbags are a common massage element in massage devices. For example, the airbags in a massage chair are devices that use inflation and deflation to compress and massage certain parts of the body. They can simulate the strength and rhythm of human hands to relax muscles and promote blood circulation. The airbags are the muscles of the massage chair, determining the massage area and effect. Airbags can provide wrap-around or point-pressing pressure to areas such as the arms, legs, and buttocks. Current technology usually uses an air pump to inflate the airbags and a solenoid valve to deflate them.

[0003] A search revealed a Chinese utility model patent (authorization announcement number: CN214967468U) that provides an inflatable anti-snoring pillow, comprising: a plurality of air bladders arranged side by side, each air bladder including an air inlet and an air outlet; a plurality of air pumps, each air pump connected to the air inlet of a corresponding air bladder; a plurality of solenoid valves, each solenoid valve disposed at the air outlet of a corresponding air bladder; a control device connected to the plurality of air pumps and the plurality of solenoid valves for controlling the air pumps and the solenoid valves; and a power supply connected to the control device for supplying power to the control device.

[0004] The aforementioned shortcomings of the prior art are as follows: Inflating the airbag with an air pump and adjusting the opening and closing of the air outlet using a solenoid valve within the air outlet to achieve the airbag's pressure maintenance and deflating functions; furthermore, the aforementioned prior art implementation mentions "several air outlets, the purpose of which is to increase the airbag's deflation speed." Therefore, the prior art requires multiple air outlets to accelerate the airbag's deflation speed. Additionally, solenoid valves need to be installed in all air outlets, resulting in a complex structure. Furthermore, the installation process is complex and time-consuming due to the need to install solenoid valves in all air outlets. Therefore, this shortcoming urgently needs to be addressed. Utility Model Content

[0005] The purpose of this invention is to address the above problems by providing an airbag inflation / deflation control device, which has the advantages of high assembly efficiency and a simpler structure for adjusting the exhaust speed.

[0006] To achieve the above objectives, the present invention provides the following technical solution: including an airbag and an air pump, wherein a first solenoid valve is provided between the airbag and the air pump outlet, a second solenoid valve is provided between the airbag and the air pump inlet, and a third solenoid valve is provided between the air pump outlet and the first solenoid valve.

[0007] The first solenoid valve has a port A and a port B. The first solenoid valve has a first state and a second state. When the first solenoid valve is in the first state, the connection between port A and port B is cut off. When the first solenoid valve is in the second state, the connection between port A and port B is made.

[0008] The second solenoid valve has a C port, a D port, and an E port. The second solenoid valve has a third state and a fourth state. When the second solenoid valve is in the third state, the C port and the E port are connected and the D port is disconnected from the C port and the E port. When the second solenoid valve is in the fourth state, the C port and the D port are connected, the E port is disconnected from the C port, and the E port and the D port are also disconnected.

[0009] The third solenoid valve has an F port and a G port, and the third solenoid valve has a fifth state and a sixth state. When the third solenoid valve is in the fifth state, the connection between the F port and the G port is cut off, and when the third solenoid valve is in the sixth state, the connection between the F port and the G port is made.

[0010] Preferably, the first and third solenoid valves are normally closed two-position two-way solenoid valves, and the second solenoid valve is a two-position three-way solenoid valve.

[0011] Preferably, a connecting pipe is connected between port A of the first solenoid valve, port F of the third solenoid valve and the outlet of the air pump; an air inlet pipe is connected between the air inlet of the air pump and port C of the second solenoid valve; and a three-way pipe is connected between the airbag, port B of the first solenoid valve and port D of the second solenoid valve.

[0012] Preferably, the connecting pipe includes a first air pipe, a second air pipe, a third air pipe, and a three-way connector. The first air pipe is connected between the air outlet of the air pump and the three-way connector. The second air pipe is connected between port A of the first solenoid valve and the three-way connector. The third air pipe is connected between port F of the third solenoid valve and the three-way connector.

[0013] Preferably, a connecting plate is provided between the first solenoid valve and the second solenoid valve, with the first solenoid valve and the second solenoid valve respectively located at both ends of the connecting plate.

[0014] Preferably, the connecting plate is connected to a first mounting bracket and a second mounting bracket, the first mounting bracket and the second mounting bracket are respectively fixedly installed at both ends of the connecting plate, the first solenoid valve is installed in the first mounting bracket, and the second solenoid valve is installed in the second mounting bracket.

[0015] Preferably, the connecting plate is provided with connecting holes, and both the first mounting bracket and the second mounting bracket are provided with mounting holes. The mounting holes and connecting holes are provided with connectors for fixing the first mounting bracket and the second mounting bracket to the connecting plate.

[0016] Preferably, the tee is in the shape of an "h" or a "Y".

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] The present invention provides an airbag inflation / deflation control device, in which the first, second, and third solenoid valves are all located outside the airbag, thus improving assembly efficiency. In addition, the cooperation of the first, second, and third solenoid valves enables the following functions: inflation, pressure holding, slow deflation, fast deflation, and air extraction. Furthermore, the air pump can be activated during rapid deflation to further increase the deflation speed, and the structure for adjusting the deflation speed is simpler. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structural principle of this utility model;

[0020] Figure 2 This is a schematic diagram of the gas path of this utility model;

[0021] Figure 3 This is a three-dimensional structural diagram of the present invention;

[0022] Figure 4 This is a three-dimensional structural diagram of the air pump of this utility model.

[0023] Figure descriptions: 1. Airbag; 2. Air pump; 21. Air outlet; 22. Air inlet; 3. First solenoid valve; 31. First mounting bracket; 4. Second solenoid valve; 41. Second mounting bracket; 5. Third solenoid valve; 6. Connecting pipe; 61. First air pipe; 62. Second air pipe; 63. Third air pipe; 64. T-connector; 7. T-pipe; 8. Air inlet pipe; 9. Connecting plate; 901. Mounting hole; 902. Connecting hole. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] like Figure 1 - Figure 4As shown, an airbag inflation / deflation control device includes an airbag 1 and an air pump 2. A first solenoid valve 3 is provided between the air outlet 21 of the airbag 1 and the air pump 2, a second solenoid valve 4 is provided between the air inlet 22 of the airbag 1 and the air pump 2, and a third solenoid valve 5 is provided between the air outlet 21 of the air pump 2 and the first solenoid valve 3. The first solenoid valve 3, the second solenoid valve 4 and the third solenoid valve 5 are all located outside the airbag 1, thus improving assembly efficiency.

[0026] The first solenoid valve 3 has an A port and a B port. The first solenoid valve 3 has a first state and a second state. When the first solenoid valve 3 is in the first state, the A port and the B port are cut off. When the first solenoid valve 3 is in the second state, the A port and the B port are connected. In this application, the A port is the air inlet and the B port is the working port.

[0027] The second solenoid valve 4 has a C port, a D port, and an E port. The second solenoid valve 4 has a third state and a fourth state. When the second solenoid valve 4 is in the third state, the C port and the E port are connected and the D port is disconnected from the C port and the E port. When the second solenoid valve 4 is in the fourth state, the C port and the D port are connected, the E port is disconnected from the C port, and the E port and the D port are also disconnected. In this application, the C port is the working port, the D port is the air inlet port, and the E port is the exhaust port, and the E port is connected to the atmosphere.

[0028] The third solenoid valve 5 has an F port and a G port. The third solenoid valve 5 has a fifth state and a sixth state. When the third solenoid valve 5 is in the fifth state, the connection between the F port and the G port is cut off. When the third solenoid valve 5 is in the sixth state, the connection between the F port and the G port is made. In this application, the F port is the air inlet and the G port is the exhaust port, and the G port is connected to the atmosphere.

[0029] The inflation / deflation control device of this application can achieve the following functions through the cooperation of the first solenoid valve 3, the second solenoid valve 4 and the third solenoid valve 5: inflation function, pressure holding function, slow deflation function, fast deflation function and air extraction function.

[0030] Inflation function: When the airbag 1 needs to be inflated, the first solenoid valve 3 is energized, and the second solenoid valve 4 and the third solenoid valve 5 are de-energized, so that the first solenoid valve 3 is in the second state, the second solenoid valve 4 is in the third state, and the third solenoid valve 5 is in the fifth state. At the same time, the air pump 2 is started, so that the airbag 1 is inflated by the air pump 2. The gas enters through the air outlet 21 of the air pump 2 into the A port of the first control valve 45, and the gas exits through the B port of the first solenoid valve 3 and enters the airbag 1.

[0031] Pressure holding function: When it is necessary to maintain pressure on airbag 1, the first solenoid valve 3 and the second solenoid valve 4 are de-energized, so that the first solenoid valve 3 is in the first state, the second solenoid valve 4 is in the third state, and the air pump 2 is turned off, thereby enabling airbag 1 to achieve the pressure holding function.

[0032] Slow exhaust function: When slow exhaust is required for airbag 1, the first solenoid valve 3 and the third solenoid valve 5 are de-energized, and the second solenoid valve 4 is energized, so that the first solenoid valve 3 is in the first state, the second solenoid valve 4 is in the fourth state, and the third solenoid valve 5 is in the fifth state, and the air pump 2 is turned off. In addition, the air pump 2 is provided with an exhaust chamber (the exhaust chamber is existing technology and is not shown in the figure). The gas discharged from airbag 1 enters the exhaust chamber. After the gas is discharged through airbag 1, it passes through port D and then through port E to enter the exhaust chamber of air pump 2.

[0033] Rapid exhaust function: When rapid exhaust of airbag 1 is required, the first solenoid valve 3 is de-energized, and the second solenoid valve 4 and the third solenoid valve 5 are energized, so that the first solenoid valve 3 is in the first state, the second solenoid valve 4 is in the fourth state, and the third solenoid valve 5 is in the sixth state. At the same time, the air pump 2 is started, which accelerates the extraction of gas from the airbag 1, thereby increasing the exhaust speed of the airbag 1. The gas extracted from the airbag 1 passes through the air pump and then through the G port of the third solenoid valve 5 to be discharged into the atmosphere. After being discharged from the airbag 1, the gas passes through the D port and then through the E port and enters the air inlet 22 of the air pump 2. Finally, it is discharged into the atmosphere through the air outlet 21 of the air pump 2 and through the G port of the third solenoid valve 5.

[0034] Air extraction function: When air needs to be extracted from airbag 1, the first solenoid valve 3 is de-energized, and the second solenoid valve 4 and the third solenoid valve 5 are energized, so that the first solenoid valve 3 is in the first state, the second solenoid valve 4 is in the fourth state, and the third solenoid valve 5 is in the sixth state. At the same time, the air pump 2 is started, which accelerates the extraction of gas from airbag 1. The gas extracted from airbag 1 passes through the air pump and then is discharged to the atmosphere through port G of the third solenoid valve 5. The difference between the air extraction function and the fast exhaust function is that the air extraction function can empty the gas in airbag 1 until it is deflated. After the gas is discharged from airbag 1, it passes through port D and then through port E and enters the air inlet 22 of air pump 2. Then it is discharged to the atmosphere through the air outlet 21 of air pump 2 and then through port G of the third solenoid valve 5.

[0035] The first solenoid valve 3 and the third solenoid valve 5 are normally closed two-position two-way solenoid valves, and the second solenoid valve 4 is a two-position three-way solenoid valve.

[0036] A connecting pipe 6 is connected between port A of the first solenoid valve 3, port F of the third solenoid valve 5 and port 21 of the air pump 2. An air inlet pipe 8 is connected between port 22 of the air pump 2 and port C of the second solenoid valve 4. A three-way pipe 7 is connected between the airbag 1, port B of the first solenoid valve 3 and port D of the second solenoid valve 4. In this application, the three-way pipe 7 is in the shape of "h" or "Y".

[0037] Further optimization is possible, as the connecting pipe 6 includes a first air pipe 61, a second air pipe 62, a third air pipe 63, and a tee connector 64. Figure 3 The first air pipe 61 is used to connect to an external air pump 2 (not shown), and the second air pipe 62 is blocked by a tee connector 64, therefore not in use. Figure 3 (The first air pipe 61 and the second air pipe 62 are labeled in the text.) The first air pipe 61 is connected between the air outlet 21 of the air pump 2 and the three-way connector 64. The second air pipe 62 is connected between the A port of the first solenoid valve 3 and the three-way connector 64. The third air pipe 63 is connected between the F port of the third solenoid valve 5 and the three-way connector 64. Through the above connection method, the lengths of the first air pipe 61, the second air pipe 62 and the third air pipe 63 can be adjusted according to different customer needs.

[0038] A connecting plate 9 is provided between the first solenoid valve 3 and the second solenoid valve 4. The first solenoid valve 3 and the second solenoid valve 4 are respectively disposed at both ends of the connecting plate 9. The connecting plate 9 is used to fix to other structures such as housings or massage tables and chairs.

[0039] The connecting plate 9 is connected to a first mounting bracket 31 and a second mounting bracket 41. The first mounting bracket 31 and the second mounting bracket 41 are respectively fixedly installed at both ends of the connecting plate 9. The first solenoid valve 3 is installed in the first mounting bracket 31, and the second solenoid valve 4 is installed in the second mounting bracket 41. The connecting plate 9 is provided with a connecting hole 902. The first mounting bracket 31 and the second mounting bracket 41 are both provided with mounting holes 901. The mounting holes 901 and the connecting holes 902 are provided with connectors for fixing the first mounting bracket 31 and the second mounting bracket 41 to the connecting plate 9. In this application, the connectors are bolts and nuts. After the bolt passes through the connecting hole 902 and the mounting hole 901, the nut cooperates with the bolt to fix the first mounting bracket 31 and the second mounting bracket 41 to the connecting plate 9. In addition to the above connection method, riveting, pins and other methods can also be used for fixed connection.

[0040] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0041] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An airbag inflation / deflation control device, comprising an airbag (1) and an air pump (2), characterized in that: A first solenoid valve (3) is provided between the air outlet (21) of the airbag (1) and the air pump (2), a second solenoid valve (4) is provided between the air inlet (22) of the airbag (1) and the air pump (2), and a third solenoid valve (5) is provided between the air outlet (21) of the air pump (2) and the first solenoid valve (3). The first solenoid valve (3) is provided with port A and port B. The first solenoid valve (3) has a first state and a second state. When the first solenoid valve (3) is in the first state, port A and port B are cut off. When the first solenoid valve (3) is in the second state, port A and port B are connected. The second solenoid valve (4) has a C port, a D port and an E port. The second solenoid valve (4) has a third state and a fourth state. When the second solenoid valve (4) is in the third state, the C port and the E port are connected and the D port is disconnected from the C port and the E port. When the second solenoid valve (4) is in the fourth state, the C port and the D port are connected, the E port is disconnected from the C port and the E port and the D port are also disconnected. The third solenoid valve (5) has an F port and a G port. The third solenoid valve (5) has a fifth state and a sixth state. When the third solenoid valve (5) is in the fifth state, the F port and the G port are disconnected. When the third solenoid valve (5) is in the sixth state, the F port and the G port are connected.

2. An air bag inflation and deflation control device according to claim 1, characterized by: The first solenoid valve (3) and the third solenoid valve (5) are normally closed two-position two-way solenoid valves, and the second solenoid valve (4) is a two-position three-way solenoid valve.

3. An air bag inflation and deflation control device according to claim 1, characterized by: A connecting pipe (6) is connected between port A of the first solenoid valve (3), port F of the third solenoid valve (5) and port 21 of the air pump (2). An air inlet pipe (8) is connected between port 22 of the air pump (2) and port C of the second solenoid valve (4). A three-way pipe (7) is connected between the airbag (1), port B of the first solenoid valve (3) and port D of the second solenoid valve (4).

4. An air bag inflation and deflation control device according to claim 3, characterized by: The connecting pipe (6) includes a first air pipe (61), a second air pipe (62), a third air pipe (63), and a three-way connector (64). The first air pipe (61) is connected between the air outlet (21) of the air pump (2) and the three-way connector (64). The second air pipe (62) is connected between the A port of the first solenoid valve (3) and the three-way connector (64). The third air pipe (63) is connected between the F port of the third solenoid valve (5) and the three-way connector (64).

5. An air bag inflation and deflation control device according to claim 1, characterized by: A connecting plate (9) is provided between the first solenoid valve (3) and the second solenoid valve (4), and the first solenoid valve (3) and the second solenoid valve (4) are respectively located at both ends of the connecting plate (9).

6. The airbag inflation / deflation control device according to claim 5, characterized in that: The connecting plate (9) is connected to a first mounting bracket (31) and a second mounting bracket (41). The first mounting bracket (31) and the second mounting bracket (41) are respectively fixedly installed at both ends of the connecting plate (9). The first solenoid valve (3) is installed in the first mounting bracket (31), and the second solenoid valve (4) is installed in the second mounting bracket (41).

7. An air bag inflation and deflation control device according to claim 6, characterized by: The connecting plate (9) is provided with a connecting hole (902), and the first mounting bracket (31) and the second mounting bracket (41) are both provided with mounting holes (901). The mounting holes (901) and the connecting holes (902) are provided with connectors for fixing the first mounting bracket (31) and the second mounting bracket (41) to the connecting plate (9).

8. An air bag inflation and deflation control device according to claim 3, characterized by: The three-way pipe (7) is in the shape of "h" or "Y".

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