Control valve

Abstract

The invention provides a control valve, and relates to the technical field of pneumatic control, and the control valve comprises a driving mechanism, a rotating mechanism and an air pump assembly which are connected in sequence; the driving mechanism comprises a motor and a transmission mechanism, the transmission mechanism is a worm and gear transmission structure, and the transmission mechanism is a multi-stage transmission mechanism; the motor drives the transmission mechanism to drive the rotating mechanism to rotate; the rotating mechanism comprises an air inlet piece, a driving piece, a fixed piece and a center shaft, the center shaft sequentially penetrates through the fixed piece, the driving piece and the air inlet piece, the air inlet piece is provided with an air inlet hole, and the fixed piece is provided with an inflation hole, an exhaust hole and a fixed inflation hole; and the rotating mechanism is used for switching the inflating, exhausting and keeping states by changing the relative angle position change of the driving sheet and the fixed sheet. Integration of a multi-mode air pressure control function is achieved through innovative design of the rotating mechanism, independent control over the multiple inflation holes can be achieved through rotating movement of a single driving piece, the manufacturing cost is reduced, and the system reliability is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pneumatic control, in particular to a control valve. BACKGROUND

[0002] The existing pneumatic waist support products mainly adjust the support strength and fit degree by inflating the air bag inside the waist support through the inflation mechanism. However, the pneumatic waist support on the market still has many technical defects in air pressure control. Most products use simple air pump design, which can only provide basic inflation function and cannot realize accurate air pressure adjustment. Users often encounter the problem of over-inflation or under-inflation during use, and it is difficult to obtain the best waist support effect.

[0003] More importantly, the existing products are obviously insufficient in the degree of air pressure control refinement. The traditional air pump system can usually only provide single inflation or exhaust function, and cannot provide differentiated control in different areas according to the actual needs of users. This technical limitation leads to the fact that users cannot obtain personalized support experience, especially for users who need different parts to provide different support strength, and the existing products are difficult to meet their special needs.

[0004] In terms of control system, the existing technology generally lacks intelligent control means. Most products use manual control method, and users need to adjust the air pressure by pressing or rotating operation, which is complex and has limited precision. More importantly, these products lack effective position feedback mechanism and cannot realize accurate state detection and control, so users cannot accurately master the current inflation state and pressure distribution.

[0005] From the perspective of structural design, the existing pneumatic waist support products generally have the problems of large volume and low integration. The air pump, control system and air path distribution device are often designed separately, which not only increases the complexity and cost of the product, but also affects the user's convenience. In addition, the existing products also have room for improvement in sealing performance and durability, and are prone to air leakage, control failure and other problems after long-term use.

[0006] In terms of air path control technology, the existing solutions usually use multiple independent electromagnetic valves or mechanical valves to control the inflation and exhaust of different air bags. This design not only increases the complexity and failure rate of the system, but also makes it difficult to realize accurate flow control and pressure regulation. Especially in application scenarios that need to realize multiple working mode switching, the traditional control method is not up to the task.

[0007] From the perspective of user experience, existing products still have a lot of room for improvement in terms of operational convenience and functional diversity. Users often need to go through complex operation steps to achieve basic air pressure adjustment, and the adjustment accuracy is limited, making it difficult to achieve satisfactory use effect. At the same time, the product lacks intelligent automatic adjustment function and cannot automatically optimize the support effect according to the use condition.

[0008] Chinese patent document CN119084621A discloses a valve transmission mechanism and a regulating valve and a water dispenser, which discloses a technical solution for precise transmission control through transmission shaft support at both ends, which improves transmission reliability and repeatability precision, but still has the problems of single function, inability to realize multi-mode air pressure control and lack of intelligent control means. SUMMARY

[0009] The purpose of the present application is to provide a control valve that can realize multi-mode air pressure control, has high transmission accuracy, good stability, simple structure and low cost.

[0010] To achieve the above purpose, the present application realizes the following technical solutions: A control valve, comprising a driving mechanism, a rotating mechanism and a gas pump assembly connected in sequence; the driving mechanism comprises a motor and a transmission mechanism, the transmission mechanism is a worm gear and / or gear transmission structure, and the transmission mechanism is a multi-stage transmission mechanism; the motor drives the rotating mechanism to rotate by driving the transmission mechanism; The rotating mechanism comprises an intake blade, a driving blade, a fixed blade and a center shaft, the center shaft passes through the fixed blade, the driving blade and the intake blade in sequence, the intake blade is provided with an air inlet hole, and the fixed blade is provided with an air charging hole, an air exhaust hole and a fixed air charging hole; The rotating mechanism switches the states of air charging, air exhausting and maintaining by changing the relative angular position of the driving blade and the fixed blade.

[0011] Further, it further comprises a shell, the shell comprises a shell body and a bottom cover, the shell body is used for fixing the driving mechanism, the rotating mechanism and the gas pump assembly, and the bottom cover is installed at the bottom of the rotating mechanism.

[0012] Further, the bottom cover is provided with a plug connector, an air exhaust hole interface, an air charging hole interface and a fixed air charging hole interface.

[0013] Further, the rotating mechanism further comprises a magnet base, the air inlet sheet is provided with a first fixing hole, the driving sheet is provided with a rotating hole, the rotating hole is fixedly connected with the magnet base, the magnet base is provided with a center hole, the magnet base can rotate around the center axis through the center hole, the fixed sheet is provided with a second fixing hole, the magnet base can pass through the second fixing hole of the fixed sheet, the center axis passes through the second fixing hole, the center hole and the first fixing hole in sequence, the air inlet sheet is fixed with the fixed sheet, and the driving sheet can rotate around the center axis under the driving of the transmission mechanism.

[0014] Further, the transmission mechanism comprises a first primary worm, a first primary gear, a first secondary worm, a first secondary gear and a first transmission shaft. The first primary worm is connected with the motor, the first primary worm is coupled with the first primary gear, the first transmission shaft passes through the first primary gear and the first secondary worm in sequence, the first secondary worm is coupled with the first secondary gear, and the first secondary gear is fixedly installed on the driving sheet.

[0015] Further, the transmission mechanism comprises a second primary worm, a second primary gear, a second secondary worm, a second secondary gear, a third gear, a fourth gear and a second transmission shaft. The second primary worm is connected with the motor, the second primary worm is coupled with the second primary gear, one end of the second secondary worm passes through the second primary gear, the second secondary worm is coupled with the second secondary gear, the second transmission shaft passes through the second secondary gear and the third gear in sequence, the third gear is coupled with the fourth gear, and the fourth gear is fixedly installed on the driving sheet.

[0016] Further, the rotating mechanism is provided below with a control end, and the control end is provided with a sensor.

[0017] Further, the magnet base is provided with a clamping groove, and the rotating hole is fixedly connected with the magnet base through the clamping groove.

[0018] Further, the number of the air charging holes is multiple.

[0019] Further, the top of the driving sheet is provided with an air inlet channel and a connecting channel, the air inlet channel is communicated with the air inlet hole, and the bottom of the driving sheet is provided with a first channel, a second channel, a third channel and a fourth channel. The air inlet channel is communicated with the first channel and the third channel respectively, and the connecting channel is communicated with the second channel and the fourth channel respectively.

[0020] An application of the control valve in a lumbar support or seat adjustment scenario.

[0021] Compared with the prior art, the present application has the following beneficial effects: Firstly, the present application realizes the integration of multi-mode air pressure control function through the innovative design of the rotating mechanism. The driving piece can stably switch between the three basic states of inflation, exhaust and maintenance by changing the relative angular position with the fixed piece, solving the problem of single air pressure control function in the prior art. The design that the fixed inflation hole always keeps communication with the first channel ensures the continuous supply of the basic air pressure, avoiding the air pressure interruption phenomenon that may occur when the working state of the traditional product is switched.

[0022] Secondly, the present application adopts multi-stage worm and gear transmission structure through the transmission mechanism, and through reasonable speed reduction ratio design, it not only ensures sufficient output torque, but also ensures transmission precision. The self-locking characteristic of worm transmission enables the system to maintain the current position in the power-off state, improving the reliability and energy saving performance of the system. The application of multi-stage transmission structure enables the motor to adopt the type of small power and high precision, reducing the energy consumption and cost of the system.

[0023] Thirdly, the present application realizes the simplified implementation of complex air path control through the ingenious cooperation of the multi-channel system provided on the driving piece, the air inlet channel and the four bottom channels. Through the rotary motion of a single driving piece, the independent control of multiple inflation holes can be realized, greatly simplifying the system structure, reducing the number of control elements, improving the reliability of the system and reducing the manufacturing cost. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 A perspective view of a control valve is provided for the present application; Figure 2 A driving structure, rotating structure and working state diagram of a control valve are provided for the present application; Figure 3 A perspective view of a two-stage transmission structure of a control valve is provided for the present application; Figure 4 A perspective view of a three-stage transmission structure of a control valve is provided for the present application; Figure 5 An exploded view of a rotating structure of a control valve is provided for the present application; Figure 6 A schematic view of the first surface of a driving piece of a control valve is provided for the present application; Figure 7 A schematic view of the second surface of a driving piece of a control valve is provided for the present application.

[0025] In the figure: 1, driving mechanism; 2, rotating mechanism; 3, air pump assembly; 4, shell; 11, motor; 12, transmission mechanism; 1201, First stage worm gear; 1202, First stage gear; 1203, First and second stage worm gear; 1204, First and second stage gear; 1205, First drive shaft; 1206, Second stage worm gear; 1207, Second stage gear; 1208, Second and second stage worm gear; 1209, Second and second stage gear; 1210, Third stage gear; 1211, Fourth stage gear; 1212, Second drive shaft; 21. Intake vane; 22. Drive vane; 23. Fixed vane; 24. Central shaft; 25. Magnet base; 26. Control terminal; 211. Air inlet; 212. First fixing hole; 221. Rotating hole; 222. Air inlet channel; 223. Connecting channel; 224. First channel; 225. Second channel; 226. Third channel; 227. Fourth channel; 231. Inflation hole; 232. Exhaust hole; 233. Fixed inflation hole; 234. Second fixing hole; 251. Slot; 261. Sensor; 41. Housing; 42. Bottom cover; 421. Connector; 422. Vent port interface; 423. Inflation port interface; 424. Fixed inflation port interface. Detailed Implementation

[0026] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] Example 1 like Figures 1-7As shown, a control valve provided by the present invention includes a drive mechanism 1, a rotating mechanism 2, and an air pump assembly 3 connected in sequence. The drive mechanism 1 includes a motor 11 and a transmission mechanism 12. The transmission mechanism 12 is a worm gear and gear transmission structure and is a multi-stage transmission mechanism. The motor 11 drives the rotating mechanism 2 to rotate by driving the transmission mechanism 12. The rotating mechanism 2 includes an air inlet plate 21, a drive plate 22, a fixed plate 23, and a central shaft 24. The central shaft 24 passes through the fixed plate 23, the drive plate 22, and the air inlet plate 21 in sequence. The air inlet plate 21 is provided with an air inlet hole 211. The fixed plate 23 is provided with an air inlet hole 231, an air outlet hole 232, and a fixed air inlet hole 233. The rotating mechanism 2 switches between the states of air inlet, air outlet, and holding by changing the relative angular position of the drive plate 22 and the fixed plate 23.

[0029] Specifically, the drive mechanism 1 provides driving force through the motor 11, and the transmission mechanism 12 adopts a combination of worm gear and gear transmission. Through multi-stage reduction, a large torque output can be obtained while ensuring transmission accuracy. The worm gear transmission has self-locking performance, which can ensure that the drive plate 22 remains in a fixed position when the power is cut off. The gear transmission provides a stable transmission ratio, ensuring that the rotation angle of the drive plate 22 corresponds to the rotation angle of the motor 11.

[0030] In the rotating mechanism 2, the air inlet plate 21 is fixed, and its air inlet hole 211 is connected to an external air source to provide gas for the entire system. The fixed plate 23 is also fixed, and its inflation hole 231, exhaust hole 232, and fixed inflation hole 233 are connected to an external air system, forming gas input and output channels. The drive plate 22 is the core component of the rotating mechanism 2. Driven by the transmission mechanism 12, it rotates around the central axis 24, controlling the connection between different air paths by changing its relative position to the fixed plate 23. The central axis 24 runs through the entire rotating mechanism 2, providing support for the rotation of the drive plate 22 and ensuring the coaxiality between the plates.

[0031] The rotation of the drive plate 22 enables three basic operating states: inflation, deflation, and maintenance. When the channel on the drive plate 22 aligns with the inflation port 231 on the fixed plate 23, gas enters the system through the inlet port 211 and exits through the inflation port 231, achieving the inflation function. When the channel on the drive plate 22 aligns with the deflation port 232 on the fixed plate 23, external gas can be discharged through the deflation port 232, achieving the deflation function. When the drive plate 22 is in the intermediate position, all channels are disconnected, and the system maintains its current state. The fixed inflation port 233 ensures a continuous supply of basic air pressure, maintaining the system's basic functions.

[0032] In one specific embodiment of this invention, a housing 4 is also included. The housing 4 comprises a shell 41 and a bottom cover 42. The shell 41 is used to fix the drive mechanism 1, the rotating mechanism 2, and the air pump assembly 3, while maintaining the airtightness of the device. The bottom cover 42 is installed at the bottom of the rotating mechanism 2. The shell 41 provides structural support and protection for the entire control valve, ensuring that the relative positions of each component remain fixed. The shell 41 has a corresponding fixing structure designed inside to fix the drive mechanism 1 and the rotating mechanism 2 at their corresponding positions. The bottom cover 42 is installed at the bottom of the rotating mechanism 2, forming a sealed inner cavity with the shell 41 to prevent external dust and moisture from entering, while also providing an interface for air circuit connection. The design of the bottom cover 42 also takes airtightness into consideration, and a sealing gasket or sealant can be used to ensure a good sealing effect.

[0033] In one specific embodiment of this example, the bottom cover 42 is provided with a connector 421, an exhaust port interface 422, an inflation port interface 423, and a fixed inflation port interface 424. The connector 421 is used to connect to an external control system or power system, providing power supply and a control signal transmission channel. The exhaust port interface 422, the inflation port interface 423, and the fixed inflation port interface 424 correspond to corresponding holes on the fixed plate 23, connecting to an external air circuit system. A sealing structure is provided at the interface to ensure airtightness of the connection. The special design of the fixed inflation port interface 424 ensures unobstructed basic air pressure channel, providing a continuous air pressure supply to the system.

[0034] In one specific embodiment of this invention, the rotating mechanism 2 further includes a magnet base 25. The air intake plate 21 has a first fixing hole 212, and the driving plate 22 has a rotating hole 221, which is fixedly connected to the magnet base 25. The magnet base 25 has a central hole through which it can rotate around a central axis 24. The fixed plate 23 has a second fixing hole 234 through which the magnet base 25 can pass. The central axis 24 passes sequentially through the second fixing hole 234, the central hole, and the first fixing hole 212. The air intake plate 21 and the fixed plate 23 are fixed in place, while the driving plate 22 can rotate around the central axis 24 under the drive of the transmission mechanism 12. The magnet base 25 contains a permanent magnet, which can cooperate with an external sensor 261 to achieve accurate detection of the position of the driving plate 22. The design of the central hole ensures the coaxiality of the magnet base 25 and the central axis 24, avoiding eccentricity and vibration during rotation.

[0035] In one specific embodiment of this invention, the transmission mechanism 12 includes a first-stage worm gear 1201, a first-stage gear 1202, a first-stage worm gear 1203, a first-stage gear 1204, and a first transmission shaft 1205. The first-stage worm gear 1201 is connected to the motor 11, and is coupled to the first-stage gear 1202. The first transmission shaft 1205 passes sequentially through the first-stage gear 1202 and the first-stage worm gear 1203, and is coupled to the first-stage worm gear 1203 and the first-stage gear 1204. The first-stage gear 1204 is fixedly mounted on the drive plate 22. This two-stage transmission structure can achieve a large reduction ratio, improve output torque, and ensure transmission accuracy. The first-stage worm gear 1201 is directly connected to the motor 11, converting the high-speed, low-torque output of the motor 11 into a low-speed, high-torque output. The first transmission shaft 1205 transmits the output of the first stage to the second stage, achieving further reduction and torque amplification. The fixed connection between the first-stage gear 1204 and the drive plate 22 ensures the directness and accuracy of the transmission.

[0036] In one specific embodiment of this invention, the transmission mechanism 12 includes a second-stage worm gear 1206, a second-stage gear 1207, a second-stage worm gear 1208, a second-stage gear 1209, a third-stage gear 1210, a fourth-stage gear 1211, and a second transmission shaft 1212. The second-stage worm gear 1206 is connected to the motor 11 and coupled to the second-stage gear 1207. One end of the second-stage worm gear 1208 passes through the second-stage gear 1207, and the second-stage worm gear 1208 is coupled to the second-stage gear 1209. The second transmission shaft 1212 passes sequentially through the second-stage gear 1209 and the third-stage gear 1210. The third-stage gear 1210 and the fourth-stage gear 1211 are coupled together, and the fourth-stage gear 1211 is fixedly mounted on the drive plate 22. This three-stage transmission structure can achieve a larger reduction ratio and is suitable for applications requiring higher precision and greater torque. The three-stage transmission design allows motor 11 to use a higher speed motor type, improving the system's response speed and ensuring the accuracy of the overall transmission ratio and the matching between each stage.

[0037] In one specific embodiment of this invention, a control terminal 26 is disposed below the rotating mechanism 2, and a sensor 261 is disposed on the control terminal 26. The control terminal 26 provides signal processing and control functions for the entire control system, integrating the necessary circuits and control devices. The sensor 261 is used to detect the position and state of the drive plate 22. During detection, the control terminal 26 remains stationary, and the magnet base 25 rotates with the drive plate 22. The sensor 261 detects the rotational position of the drive plate 22 by receiving the angle change signal of the permanent magnet in the magnet base 25. The sensor 261 works in conjunction with the permanent magnet in the magnet base 25 to achieve non-contact position detection. The control terminal 26 controls the operation of the motor 11 according to the feedback signal from the sensor 261 to achieve closed-loop control.

[0038] In one specific embodiment of this invention, a slot 251 is provided on the magnet holder 25. The slot 251 enhances the connection strength between the drive plate 22 and the magnet holder 25, preventing slippage or disengagement under high torque operating conditions. The slot 251 adopts a keyway structure, which cooperates with the corresponding structure on the drive plate 22 to achieve reliable torque transmission.

[0039] In one specific embodiment of this example, there are multiple inflation ports 231. The arrangement of multiple inflation ports allows for more precise air pressure control, meeting the needs of different application scenarios. The number and distribution of the inflation ports 231 are designed according to specific application requirements and can be two, three, or more. The multiple inflation port design enables the system to achieve independent control of different areas, providing users with more usage mode options.

[0040] In one specific embodiment of this example, the top of the drive plate 22 is provided with an air intake channel 222 and a connecting channel 223. The air intake channel 222 communicates with the air intake port 211. The bottom of the drive plate 22 is provided with a first channel 224, a second channel 225, a third channel 226, and a fourth channel 227. The air intake channel 222 communicates with the first channel 224 and the third channel 226, respectively, and the connecting channel 223 communicates with the second channel 225 and the fourth channel 227, respectively. The design of the channel system is the core technology for realizing multi-mode air pressure control. The air intake channel 222 is responsible for the gas input distribution, and the connecting channel 223 is responsible for the air path connection in different working modes. The four bottom channels correspond to different output functions. The first channel 224 and the third channel 226 are used for the inflation function, and the second channel 225 and the fourth channel 227 are used for the exhaust and holding functions. The cross-sectional area and length of the channels are calculated by fluid dynamics to ensure smooth airflow and minimize pressure loss.

[0041] This invention also provides an application of the control valve described above in lumbar support or seat adjustment scenarios. In lumbar support applications, the control valve can adjust the support strength of different parts according to the user's needs, achieving personalized lumbar support through independent control of multiple inflation holes. In seat adjustment applications, the control valve can control the airbags in different parts of the seat, achieving comprehensive adjustment of seat height, tilt angle, and lumbar support, while the multi-stage transmission mechanism ensures the stability of the adjustment process.

[0042] The working principle of this invention is as follows: The control valve operates based on the control of the relative angular position between the drive plate and the stationary plate in a rotating mechanism. When the motor starts, the driving force is transmitted to the drive plate through a multi-stage transmission mechanism. The drive plate rotates around the central axis, changing its relative angular position with the stationary plate. The transmission mechanism uses a combination of worm gears and gears, achieving appropriate speed and torque through two or three stages of reduction, ensuring that the drive plate can accurately remain at the preset position.

[0043] The internal channel system of the drive plate is the core mechanism for achieving multi-mode control. The drive plate's air intake channel connects to the air intake port, responsible for the gas input and distribution. The connecting channel connects to the second and fourth channels at the bottom, responsible for the air path connection in different operating modes. The air intake channel connects to the first and third channels respectively, forming the air path for the inflation function. When the drive plate rotates, the alignment relationship between these channels and the inflation port, exhaust port, and fixed inflation port on the fixed plate changes, thereby achieving different air path connection states.

[0044] The fixed inflation port design ensures the continuity of the system's basic functions. Regardless of the rotational position of the drive plate, the fixed inflation port remains connected to the first channel, and gas is continuously output from the fixed inflation port. This design guarantees the basic air pressure requirements of the external load and ensures that the system's basic functions are not interrupted by changes in the position of the drive plate.

[0045] When the vent is connected to the second channel, and the inflation port is neither connected to the second channel nor the fourth channel, all inflation ports neither inflate nor vent, and the system remains in a holding state. In this operating mode, the external load maintains its current air pressure state, and no air pressure change occurs, thus achieving the pressure holding function.

[0046] The drive mechanism controls the drive plate to rotate at a certain angle. When the exhaust port is connected to the second channel, the second inflation port is connected to the first or third channel, and the first inflation port is connected to the second or fourth channel, the first inflation port is in an inflation state, and the second inflation port is in an exhaust state. This working mode realizes differentiated control by region, and can simultaneously perform inflation and deflation operations on different regions.

[0047] The drive mechanism controls the drive plate to rotate at a certain angle. When the exhaust port is connected to the fourth channel and all inflation ports are connected to the first or third channel, all inflation ports are in an inflated state. In this working mode, the system provides maximum inflation capacity, which can quickly increase the air pressure of the external load, making it suitable for applications that require rapid air pressure increases.

[0048] The drive mechanism controls the drive plate to rotate at a certain angle. When the second inflation port is connected to the first or third channel, and the first inflation port is not connected to any channel, the second inflation port is in an inflation state, and the first inflation port is in a state of neither inflation nor deflation. This working mode achieves gradual air pressure regulation, enabling more precise pressure control, and is suitable for applications that require slow air pressure adjustment.

[0049] The position detection and feedback control system is implemented through the cooperation of a magnet holder and a sensor. The magnet holder contains a permanent magnet that rotates together with the drive plate. The sensor detects changes in the position of the magnet holder and feeds this position information back to the control unit. The control unit compares the position feedback information with a preset target position, calculates the deviation, and generates a control signal to drive the motor to adjust the position of the drive plate. This closed-loop control mechanism ensures that the drive plate can accurately stop at the target position, achieving accurate air pressure control.

[0050] Through precise mechanical design and stable control strategies, the entire control valve provides a new technical solution for the development of modern pneumatic control equipment.

[0051] The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and implement it accordingly. They should not be construed as limiting the scope of protection of the present invention. All equivalent transformations or modifications made in accordance with the spirit and essence of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A control valve, characterized in that: It includes a drive mechanism, a rotating mechanism, and an air pump assembly connected in sequence; the drive mechanism includes a motor and a transmission mechanism, the transmission mechanism is a worm gear and / or gear transmission structure, and the transmission mechanism is a multi-stage transmission mechanism; the motor drives the rotating mechanism to rotate by driving the transmission mechanism. The rotating mechanism includes an air inlet plate, a drive plate, a fixed plate, and a central shaft. The central shaft passes through the fixed plate, the drive plate, and the air inlet plate in sequence. The air inlet plate is provided with an air inlet hole, and the fixed plate is provided with an air inlet hole, an air outlet hole, and a fixed air inlet hole. The rotating mechanism switches between inflation, deflation, and holding states by changing the relative angular position of the drive plate and the stationary plate.

2. A control valve according to claim 1, characterized in that: It also includes a housing, which comprises a casing and a bottom cover. The casing is used to fix the drive mechanism, the rotating mechanism and the air pump assembly, and the bottom cover is installed at the bottom of the rotating mechanism.

3. A control valve according to claim 2, characterized in that: The bottom cover is provided with a connector, an exhaust port interface, an inflation port interface, and a fixed inflation port interface.

4. A control valve according to claim 1, characterized in that: The rotating mechanism also includes a magnet base. The air intake plate is provided with a first fixing hole, and the driving plate is provided with a rotating hole. The rotating hole is fixedly connected to the magnet base. The magnet base is provided with a central hole, through which the magnet base can rotate around a central axis. The fixed plate is provided with a second fixing hole, through which the magnet base can pass. The central axis passes through the second fixing hole, the central hole, and the first fixing hole in sequence. The air intake plate and the fixed plate are fixed in place, while the driving plate can rotate around the central axis under the drive of the transmission mechanism.

5. A control valve according to claim 4, characterized in that: The magnet base is provided with a slot, and the rotating hole is fixedly connected to the magnet base through the slot.

6. A control valve according to claim 1, characterized in that: The transmission mechanism includes a first-stage worm gear, a first-stage gear, a first-second-stage worm gear, a first-second-stage gear, and a first transmission shaft; The first-stage worm gear is connected to the motor, and the first-stage worm gear is coupled to the first-stage gear. The first drive shaft passes through the first-stage gear and the first-stage worm gear in sequence. The first-stage worm gear is coupled to the first-stage gear, and the first-stage gear is fixedly mounted on the drive plate.

7. A control valve according to claim 1, characterized in that: The transmission mechanism includes a second-stage worm gear, a second-stage gear, a second-stage worm gear, a second-stage gear, a third-stage gear, a fourth-stage gear, and a second transmission shaft. The second-stage worm gear is connected to the motor and coupled to the second-stage gear. One end of the second-stage worm gear passes through the second-stage gear and is coupled to the second-stage gear. The second drive shaft passes through the second-stage gear and the third-stage gear in sequence. The third-stage gear and the fourth-stage gear are coupled to each other. The fourth-stage gear is fixedly mounted on the drive plate.

8. A control valve according to claim 1, characterized in that: A control terminal is located below the rotating mechanism, and a sensor is installed on the control terminal.

9. A control valve according to claim 1, characterized in that: The number of air inlets is multiple.

10. A control valve according to claim 1, characterized in that: The top of the drive plate is provided with an air intake channel and a connecting channel, the air intake channel communicating with an air intake hole; the bottom of the drive plate is provided with a first channel, a second channel, a third channel, and a fourth channel. The air intake channel is connected to the first channel and the third channel respectively, and the connecting channel is connected to the second channel and the fourth channel respectively.

11. The application of a control valve as described in any one of claims 1-10 in a lumbar support or seat adjustment scenario.

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