Air bag massage control valve

Abstract

The utility model relates to gas valve technical field especially air bag massage control valve, including stepping motor, assembly casing, dynamic valve piece, fixed valve piece and lower sealing plate. Dynamic valve piece, fixed valve piece and lower sealing plate are stacked from top to bottom in the assembly groove of assembly casing, and stepping motor drives dynamic valve piece rotation. The fixed valve piece is equipped with the central hole, the several inner ring holes of circumferential even distribution and the corresponding outer ring hole, and the sealing part is formed between two inner ring holes. The lower sealing plate realizes the gas path intercommunication through the air inlet groove and the communication groove on it. The air inlet part and the arc air supply part of dynamic valve piece lower end surface can guide the central hole airflow to different inner ring holes with rotation, or cut off the airflow at the sealing part position. The utility model discloses through the optimized stacking structure and sealing design, realizes the accurate distribution and reliable sealing of multichannel gas, has the advantages such as compact structure, control precision, interface layout is reasonable and has position feedback.

Description

Technical Field

[0001] This utility model relates to the field of gas valve technology, and in particular to an airbag massage control valve. Background Technology

[0002] In many fields such as analytical instruments, medical equipment, and industrial automation, there is a frequent need for valves capable of precisely controlling the distribution and on / off of multiple gas channels. Traditional multi-way valves typically employ solenoid valve arrays or complex mechanical structures, which suffer from drawbacks such as large size, complex structure, high cost, and slow response speed.

[0003] Existing technologies include multi-way valves employing a moving and fixed valve plate structure, switching air paths by rotating the moving valve plate. However, these valves still face several challenges during long-term use: First, improper design of the moving valve plate's installation and transmission structure can easily lead to unstable rotation and poor alignment, affecting sealing performance and lifespan; second, as the number of channels increases, the layout of external air path interfaces becomes cluttered, hindering installation and maintenance; third, the sealing reliability of each connection point within the valve body directly affects valve performance, and conventional sealing designs struggle to guarantee long-term effective sealing of all channels within a compact structure; furthermore, the lack of valve position status feedback functionality prevents the control system from accurately determining the valve's actual open / closed state.

[0004] Therefore, there is an urgent need for a multi-channel gas valve that is compact, reliably sealed, has status feedback, and is easy to connect to pipelines. Utility Model Content

[0005] To solve the above problems, this utility model provides an airbag massage control valve, the specific technical solution of which is as follows: An airbag massage control valve includes a stepper motor, an assembly housing, a moving valve plate, a fixed valve plate, and a lower sealing plate.

[0006] The assembly housing has an assembly groove, and the stepper motor is mounted on the assembly housing and located above the assembly groove. The moving valve plate, the fixed valve plate, and the lower sealing plate are stacked sequentially from top to bottom within the assembly groove. The axis of the moving valve plate coincides with the axis of the stepper motor's output shaft, and the stepper motor's output shaft is drively connected to the moving valve plate to drive its rotation. The fixed valve plate is fixedly installed within the assembly groove, and the lower sealing plate is fixedly installed on the assembly housing and seals the bottom of the assembly groove.

[0007] The fixed valve plate has a central hole, several inner ring holes, several outer ring holes, and at least one air inlet. The axis of the central hole coincides with the axis of the moving valve plate. The several inner ring holes are evenly distributed circumferentially around the central hole, and the interval between two adjacent inner ring holes is widened to form a sealing part. The number of outer ring holes is the same as the number of inner ring holes, and they are arranged one-to-one on the outside of the inner ring holes.

[0008] The upper end face of the lower sealing plate is provided with an air inlet groove and several connecting grooves. The air inlet groove is used to connect the air inlet hole and the center hole. The number of connecting grooves is the same as the number of inner ring holes, and is used to connect the inner ring holes with the corresponding outer ring holes one by one.

[0009] The lower end face of the moving valve plate is provided with an air inlet and an arc-shaped air supply section. The air inlet is in communication with the central hole of the fixed valve plate. The air supply section is configured to rotate with the moving valve plate, and can selectively connect the air inlet with different inner ring holes, or cut off the airflow when corresponding to the blocking section.

[0010] The assembly housing is provided with an air inlet and several air outlets. The air inlet communicates with the air inlet hole of the fixed valve plate. The number of air outlets is the same as the number of outer ring holes, and they communicate with each outer ring hole of the fixed valve plate in a corresponding manner.

[0011] Preferably, the arcuate dimension of the gas supply section is configured such that it can simultaneously cover and connect at least two of the inner ring holes at any position within its operating range. This enables the valve to simultaneously output gas to multiple points.

[0012] Preferably, the bottom of the assembly groove is provided with a circular valve plate groove, and the moving valve plate is rotatably embedded in the valve plate groove. This structure provides stable radial support for the moving valve plate, ensuring smooth rotation and good centering.

[0013] Preferably, the movable valve plate includes a docking part and an adjusting part. The upper end of the docking part is connected to the output shaft of the stepper motor for transmission, and the docking part is provided with a positioning protrusion; the upper end surface of the adjusting part is provided with a groove adapted to the docking part and a positioning groove adapted to the positioning protrusion. The air inlet and air supply parts are both located on the lower end surface of the adjusting part. This split structure facilitates processing and assembly, and can achieve precise circumferential positioning.

[0014] Preferably, the fourteen air outlets and one air inlet are divided into four groups, and these four groups of interfaces are arranged around the perimeter of the stepper motor on the assembly housing; wherein the air outlets and air inlets in the same group are arranged side by side. This layout greatly optimizes space utilization, makes the pipeline connections neat and orderly, and facilitates installation and maintenance.

[0015] Preferably, it further includes an upper sealing gasket, which is disposed on the upper end face of the fixed valve plate and covers the periphery of the plurality of outer ring holes and the air inlet hole; the upper end face of the upper sealing gasket abuts against the lower end face of the assembly housing, and is used to seal the connection channel between the outer ring hole and the air outlet and between the air inlet hole and the air inlet.

[0016] Preferably, the system further includes a lower sealing gasket, which is disposed between the lower end face of the fixed valve plate and the lower sealing plate, and covers the periphery of several of the connecting grooves and the air inlet grooves, for sealing the connecting grooves and the air inlet grooves. The upper and lower sealing gaskets together constitute a complete multi-layer sealing system, ensuring the long-term sealing reliability of the valve under high pressure.

[0017] Preferably, the system further includes a position detection component, which comprises a sensor disposed within the assembly housing and a magnet disposed on the movable valve plate. The sensor is configured to detect a signal from the magnet when the movable valve plate rotates to a position corresponding to the gas supply section and the sealing section, thereby determining that the gas valve is in a closed state. This provides accurate valve position feedback for the control system.

[0018] Compared with the prior art, the present invention has the following beneficial effects: Firstly, this solution achieves precise control of up to fourteen air passages through the precise cooperation of the moving valve plate, the fixed valve plate, and the lower sealing plate. It has a high degree of integration and a relatively compact size. The moving valve plate is embedded in a dedicated valve plate slot and is driven by separate docking parts and adjusting parts, which ensures smooth rotation and centering, reduces wear, and extends service life.

[0019] Secondly, the air path switching method of this solution differs from existing technologies: Existing technologies commonly use solenoid valves to control air path switching, while this application uses a stepper motor to control the rotation of the upper and lower ceramic valve plates to the corresponding air holes to control air path conduction. Advantages: ① No instantaneous sound from solenoid valve engagement, resulting in better sound quality; ② Solves the airtightness problem caused by the decrease in electromagnetic force due to long-term operation of the solenoid valve; ③ Simple structure, resulting in a lower subsequent failure rate.

[0020] Thirdly, the control method of the lumbar support valve is different: In the existing technology, the lumbar support that realizes the pressure holding function is generally controlled by two solenoid valves to control the inflation and deflation. This application eliminates the solenoid valve and uses the air source pressure to realize the opening, closing and pressure holding of the lumbar support valve. Advantages: ① It exists as an independent valve, which is more convenient to arrange and can be connected in series at any position in the lumbar support air circuit. ② It solves the comprehensive problems of lumbar support valve noise, insufficient lumbar support air bag lifting height and easy failure of lumbar support valve. ③ The cost of a single air control valve is reduced by 50%-70% compared with a solenoid valve. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of this application; Figure 2 This is a top view of this application; Figure 3 This is a schematic diagram of the split structure of this application. Figure 1 ; Figure 4 This is a schematic diagram of the split structure of this application. Figure 2 ; Figure 5 This is a schematic diagram of the structure of the moving valve plate in this application; Figure 6 This is a schematic diagram of the structure of the fixed valve plate in this application; Figure 7 This is a schematic diagram of the cooperation state between the moving valve plate and the fixed valve plate in the one-way passage of this application; Figure 8 This is a schematic diagram of the coordination state of the two-way on-time valve plate and the fixed valve plate in this application; Figure 9 This is a schematic diagram showing the coordination state of the moving valve plate and the fixed valve plate when the two-way trip is connected in this application.

[0022] Reference numerals: 1. Stepper motor; 2. Assembly housing; 21. Assembly groove; 211. Valve plate groove; 22. Air inlet; 23. Air outlet; 3. Moving valve plate; 31. Air inlet; 32. Air supply; 33. Connecting part; 331. Positioning protrusion; 34. Adjusting part; 341. Groove; 342. Positioning groove; 4. Fixed valve plate; 41. Center hole; 42. Inner ring hole; 43. Outer ring hole; 44. Air inlet; 5. Lower sealing plate; 51. Air inlet groove; 52. Connecting groove; 61. Sensor; 62. Magnet; 71. Upper sealing gasket; 72. Lower sealing gasket. Detailed Implementation

[0023] The embodiments of this disclosure will be further described in detail below with reference to the accompanying drawings and examples. The detailed description of the embodiments and the accompanying drawings are used to illustrate the principles of this disclosure by way of example, but should not be used to limit the scope of this disclosure. This disclosure can be implemented in many different forms and is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

[0024] These embodiments are provided to make the disclosure thorough and complete, and to fully express the scope of the disclosure to those skilled in the art. It should be noted that, unless otherwise specifically stated, the relative arrangement of components and steps, material composition, numerical expressions, and values ​​set forth in these embodiments should be interpreted as exemplary only and not as limiting.

[0025] like Figures 1 to 6 As shown, an airbag massage control valve mainly includes a stepper motor 1, an assembly housing 2, a moving valve plate 3, a fixed valve plate 4, a lower sealing plate 5, an upper sealing gasket 71, a lower sealing gasket 72, and a position detection component.

[0026] The assembly housing 2 is made of high-strength engineering plastic or metal, with an assembly groove 21 machined in its center. The stepper motor 1 is fixedly mounted on the upper end face of the assembly housing 2 by screws, and its output shaft extends vertically into the assembly groove 21. At the bottom of the assembly groove 21, a circular valve plate groove 211 is machined to precisely accommodate and position the moving valve plate 3.

[0027] The moving valve plate 3, the fixed valve plate 4, and the lower sealing plate 5 are stacked sequentially from top to bottom in the assembly groove 21. The moving valve plate 3 adopts a split design, including a docking part 33 and an adjusting part 34. The upper end of the docking part 33 is connected to the output shaft of the stepper motor 1 by means of a keyway or set screw, and the docking part 33 is provided with a positioning protrusion 331; the upper end surface of the adjusting part 34 is provided with a groove 341 that matches the docking part 33, and the upper end surface of the adjusting part 34 is machined with a groove 341 that matches the docking part 33 and a positioning groove 342 that matches the positioning protrusion 331. During assembly, the two are aligned and pressed together to achieve precise determination of power transmission and circumferential initial position. This design simplifies the processing difficulty and ensures assembly accuracy.

[0028] The fixed valve plate 4 is fixedly installed in the assembly slot 21, for example, by interference fit or locating pin. It has a central hole 41, fourteen inner ring holes 42 evenly arranged in a circle, fourteen outer ring holes 43 corresponding to the inner ring holes 42, and an air inlet 45 machined on it. The spacing between two adjacent inner ring holes 42 is enlarged to form a sealing portion. The axis of the central hole 41 coincides with the rotation axis of the moving valve plate 3.

[0029] The lower sealing plate 5 is fixedly installed at the bottom of the assembly housing 2 by screws to seal the assembly groove 21. Its upper part is processed with grooves by etching or engraving, including an air inlet groove 51 for connecting the air inlet 45 and the center hole 41, and fourteen connecting grooves 52 for correspondingly connecting the inner ring hole 42 and the outer ring hole 43.

[0030] An air inlet 31 and an arc-shaped air supply 32 are provided on the lower end face of the adjusting member 34 of the moving valve plate 3. The air inlet 31 is always connected to the center hole 41 of the fixed valve plate 4. When the stepper motor 1 drives the moving valve plate 3 to rotate, the arc-shaped air supply 32 guides the airflow from the center hole 41 to different inner ring holes 42. Its arc-shaped size is designed to cover at least two inner ring holes 42 at the same time, thereby realizing the function of supplying multiple outlets with one air inlet. When the air supply 32 rotates to be opposite to the blocking part on the fixed valve plate 4, the airflow is cut off and the valve is in the closed state.

[0031] The housing 2 has one air inlet 22 and fourteen air outlets 23. These fifteen interfaces are divided into four groups and arranged around the stepper motor 1. The air outlets 23 and air inlets 22 in the same group are arranged side by side, which makes the external pipeline connections neat and orderly, and easy to identify and install.

[0032] To ensure sealing, an upper sealing gasket 71 is provided on the upper end face of the fixed valve plate 4, which covers all the outer ring holes 43 and the air inlet holes 45, and is used to seal the interfaces between these holes and the corresponding flow channels on the assembly housing 2 that connect to the air inlet nozzle 22 and the air outlet nozzle 23. A lower sealing gasket 72 is provided between the lower end face of the fixed valve plate 4 and the lower sealing plate 5, which covers all the connecting grooves 52 and the air inlet groove 51, and is used to seal these flow channels on the lower sealing plate 5.

[0033] In the above embodiment, the number of air inlets 22 and air outlets 23 can be rotated to control and adjust the air valves with different functions.

[0034] In some embodiments, a stepper motor 1 is used to control the rotating valve plate 3 and the fixed valve plate 4 to rotate to a designated position to switch the air passage on and off. This is fundamentally different from the air passage on- and off control methods that use micro solenoid valves to control the opening and closing of the air passage.

[0035] The position detection assembly includes a Hall sensor 61 mounted inside the assembly housing 2 and a magnet 62 embedded in the moving valve plate 3. When the moving valve plate 3 rotates to the closed position where the air supply section 32 coincides with the sealing section, the magnet 62 comes into close proximity to the Hall sensor 61, and the sensor generates an electrical signal that is sent to the control system to confirm that the valve is closed.

[0036] The working principle of this utility model: During operation, high-pressure gas enters through the inlet 22 on the assembly housing 2, passes through the inlet hole 45 on the fixed valve plate 4, and through the inlet groove 51 on the lower sealing plate 5 to reach the center hole 41 of the fixed valve plate 4. The gas then enters the inlet section 31 of the moving valve plate 3, which is always connected to the center hole 41.

[0037] The control system drives the stepper motor 1 to rotate at a specific angle according to the command, which in turn drives the movable valve plate 3 to rotate. The arc-shaped air supply part 32 at the lower end of the movable valve plate 3 changes position accordingly, guiding the airflow from the air inlet 31 to one or more specific inner ring holes 42. The airflow then passes through the corresponding connecting groove 52 on the lower sealing plate 5, reaches the corresponding outer ring hole 43, and is finally output from the corresponding air outlet 23, realizing the distribution and switching of air paths. When it is necessary to close all air paths, the stepper motor drives the movable valve plate to rotate to a position where the air supply part is opposite to the sealing part on the fixed valve plate, at which point the airflow is blocked. The Hall sensor detects the magnetic signal and sends feedback to the system that the valve is closed.

[0038] In the above embodiments, the control valve in this application can achieve one-way connection to the air valve, such as... Figure 7 As shown; two-way air valve, as... Figure 8 As shown; the second-way trip connects to the vent valve, as follows. Figure 9 As shown.

[0039] The technical principles of this utility model have been described above with reference to specific embodiments. These descriptions are merely for explaining the principles of this utility model and should not be construed as limiting the scope of protection of this utility model in any way. Based on this explanation, those skilled in the art can readily conceive of other specific embodiments of this utility model without inventive effort, and these embodiments will all fall within the protection scope of the claims of this utility model.

Claims

1. An airbag massage control valve, characterized in that, include: Stepper motor (1); Assembly housing (2), wherein an assembly groove (21) is provided on the assembly housing (2); The stepper motor (1) is mounted on the assembly housing (2) and located above the assembly slot (21); The moving valve plate (3), the fixed valve plate (4), and the lower sealing plate (5) are stacked in the assembly groove (21) from top to bottom; The axis of the moving valve plate (3) coincides with the axis of the output shaft of the stepper motor (1), and the output shaft of the stepper motor (1) is connected to the moving valve plate (3) to drive it to rotate. The fixed valve plate (4) is fixedly installed in the assembly groove (21), and the lower sealing plate (5) is fixedly installed on the assembly housing (2) and seals the bottom of the assembly groove (21); The fixed valve plate (4) is provided with: a central hole (41) whose axis coincides with the axis of the moving valve plate (3); a plurality of inner ring holes (42) which are evenly distributed circumferentially around the central hole (41), and the interval between two adjacent inner ring holes (42) is widened to form a sealing part; a plurality of outer ring holes (43) which are the same number as the number of inner ring holes (42) and are arranged one by one on the outside of the inner ring holes (42); and at least one air inlet (45). The upper end face of the lower sealing plate (5) is provided with: an air inlet groove (51) for connecting the air inlet hole (45) and the center hole (41); and a plurality of connecting grooves (52), the number of which is the same as the number of the inner ring holes (42), for connecting the inner ring holes (42) and the corresponding outer ring holes (43) one by one. The lower end face of the moving valve plate (3) is provided with: an air inlet (31) which is in communication with the center hole (41) of the fixed valve plate (4); and an arc-shaped air supply part (32) which is configured to rotate with the moving valve plate (3) and can selectively connect the air inlet (31) with different inner ring holes (42), or cut off the airflow when corresponding to the blocking part; The assembly housing (2) is provided with an air inlet (22) that communicates with the air inlet (45) of the fixed valve plate (4); Several air outlets (23) are provided, the number of which is the same as the number of outer ring holes (43), and they are connected to each outer ring hole (43) of the fixed valve plate (4) in a corresponding manner.

2. The airbag massage control valve according to claim 1, characterized in that, The arcuate dimension of the air supply section (32) is configured such that it can cover and connect at least two inner ring holes (42) at any position within its working range.

3. The airbag massage control valve according to claim 1, characterized in that, The bottom of the assembly groove (21) is provided with a circular valve plate groove (211), and the moving valve plate (3) is rotatably embedded in the valve plate groove (211).

4. The airbag massage control valve according to claim 1, characterized in that, The moving valve plate (3) includes a docking part (33) and an adjusting part (34); the upper end of the docking part (33) is connected to the output shaft of the stepper motor (1) for transmission, and the docking part (33) is provided with a positioning protrusion (331); the upper end surface of the adjusting part (34) is provided with a groove (341) that matches the docking part (33) and a positioning groove (342) that matches the positioning protrusion (331); the air inlet (31) and the air supply part (32) are both provided on the lower end surface of the adjusting part (34).

5. The airbag massage control valve according to claim 1, characterized in that, It also includes an upper sealing gasket (71), which is disposed on the upper end face of the fixed valve plate (4) and covers the periphery of several outer ring holes (43) and air inlet holes (45).

6. The airbag massage control valve according to claim 1, characterized in that, It also includes a lower sealing gasket (72), which is disposed between the lower end face of the fixed valve plate (4) and the lower sealing plate (5), and covers the periphery of several of the connecting grooves (52) and the air inlet groove (51).

7. The airbag massage control valve according to claim 1, characterized in that, It also includes a position detection component, which includes a sensor (61) disposed in the assembly housing (2) and a magnet (62) disposed on the moving valve plate (3).

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