A control valve

Abstract

This utility model provides a control valve, relating to the field of pneumatic control technology. The control valve 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, which is a worm gear and gear transmission structure, and is a multi-stage transmission mechanism. The motor drives the rotating mechanism to rotate through 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 inflation hole, an exhaust hole, and a fixed inflation hole. The rotating mechanism switches between inflation, exhaust, and holding states by changing the relative angular position of the drive plate and the fixed plate. This utility model achieves the integration of multi-mode air pressure control functions through the innovative design of the rotating mechanism. The rotational movement of a single drive plate can realize the independent control of multiple inflation holes, reducing manufacturing costs and improving system reliability.

Description

Technical Field

[0001] This utility model relates to the field of pneumatic control technology, specifically to a control valve. Background Technology

[0002] Existing pneumatic lumbar support products primarily use an inflation mechanism to inflate internal air bladders to adjust support strength and fit. However, current pneumatic lumbar support products on the market still have many technical shortcomings in air pressure control. Most products use a simple air pump design, providing only basic inflation functionality and failing to achieve precise air pressure adjustment. Users frequently encounter problems with over-inflation or under-inflation during use, making it difficult to obtain optimal lumbar support.

[0003] More importantly, existing products are significantly lacking in the precision of air pressure control. Traditional air pump systems typically only provide a single inflation or deflation function, unable to offer differentiated control for different areas based on the user's actual needs. This technological limitation prevents users from obtaining a personalized support experience, especially for users who require different levels of support for different areas; existing products struggle to meet their specific needs.

[0004] In terms of control systems, existing technologies generally lack intelligent control methods. Most products use manual control, requiring users to adjust air pressure by pressing or rotating, a process that is complex and has limited precision. More importantly, these products lack effective position feedback mechanisms, making it impossible to achieve accurate status detection and control, and users find it difficult to accurately grasp the current inflation status and pressure distribution.

[0005] From a structural design perspective, existing pneumatic lumbar support products generally suffer from large size and low integration. The air pump, control system, and air distribution device are often designed separately, which not only increases product complexity and cost but also affects user convenience. Furthermore, existing products have room for improvement in sealing performance and durability, and are prone to problems such as air leakage and control failure after long-term use.

[0006] In terms of pneumatic control technology, existing solutions typically employ multiple independent solenoid valves or mechanical valves to control the inflation and deflation of different airbags. This design not only increases system complexity and failure rate but also makes it difficult to achieve precise flow control and pressure regulation. Especially in applications requiring switching between multiple operating modes, traditional control methods prove inadequate.

[0007] From a user experience perspective, existing products still have significant room for improvement in terms of ease of operation and functional versatility. Users often need to go through complex steps to achieve basic air pressure adjustment, and the adjustment accuracy is limited, making it difficult to obtain satisfactory results. Furthermore, the products lack intelligent automatic adjustment functions and cannot automatically optimize support based on usage conditions.

[0008] Chinese patent document CN119084621A discloses a valve transmission mechanism, a regulating valve, and a water dispenser. It discloses a technical solution that achieves precise transmission control by supporting both ends of the transmission shaft, which improves the reliability of transmission and the accuracy of repeatability. However, it still has the problems of single function, inability to achieve multi-mode air pressure control, and lack of intelligent control methods. Utility Model Content

[0009] The purpose of this invention is to provide a control valve that can achieve multi-mode pneumatic control, has high transmission accuracy, good stability, and a simple structure with low cost.

[0010] To achieve the above objectives, this utility model employs the following technical solution: A control valve includes a drive mechanism, a rotary mechanism, and an air pump assembly connected in sequence; the drive mechanism includes a motor and a transmission mechanism, the transmission mechanism being a worm gear and / or gear transmission structure, and the transmission mechanism being a multi-stage transmission mechanism; the motor drives the rotary 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.

[0011] Furthermore, 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 mounted on the bottom of the rotating mechanism.

[0012] Furthermore, the bottom cover is provided with a connector, an exhaust port interface, an inflation port interface, and a fixed inflation port interface.

[0013] Furthermore, the rotating mechanism also includes a magnet base, the air intake plate is provided with a first fixing hole, 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, the magnet base can rotate around the central axis through the central hole, the fixed plate is provided with a second fixing hole, the magnet base can pass through the second fixing hole of the fixed plate, 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, and the driving plate can rotate around the central axis under the drive of the transmission mechanism.

[0014] Furthermore: 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.

[0015] Furthermore: 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.

[0016] Furthermore, a control terminal is provided below the rotating mechanism, and a sensor is provided on the control terminal.

[0017] Furthermore, the magnet base is provided with a slot, and the rotating hole is fixedly connected to the magnet base through the slot.

[0018] Furthermore, the number of the air inlets is multiple.

[0019] Furthermore: 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.

[0020] An application of a control valve as described above in lumbar support or seat adjustment scenarios.

[0021] Compared with the prior art, the present invention has the following advantages: I. This utility model achieves integrated multi-mode air pressure control through the innovative design of the rotating mechanism. The drive plate, by changing its relative angular position to the fixed plate, can stably switch between three basic states: inflation, deflation, and holding, solving the problem of single air pressure control function in existing technologies. The design that the fixed inflation port is always connected to the first channel ensures a continuous supply of basic air pressure, avoiding air pressure interruptions that may occur when switching working states in traditional products.

[0022] II. This utility model employs a multi-stage worm gear and gear transmission structure in its transmission mechanism. Through a reasonable reduction ratio design, it ensures both sufficient output torque and transmission accuracy. The self-locking characteristic of the worm gear drive allows the system to maintain its current position even in the event of a power outage, improving system reliability and energy efficiency. The application of the multi-stage transmission structure allows for the use of low-power, high-precision motors, reducing system energy consumption and cost.

[0023] Third, this utility model simplifies the control of complex air circuits through the ingenious cooperation of the air intake channel, connecting channel, and four bottom channels in a multi-channel system set on the drive plate. Multiple inflation ports can be independently controlled by the rotational movement of a single drive plate, greatly simplifying the system structure, reducing the number of control components, improving system reliability, and lowering manufacturing costs. Attached Figure Description

[0024] Figure 1 A perspective view of a control valve provided by this utility model; Figure 2 A schematic diagram of the working state of the drive structure, rotation structure and control end of a control valve provided by this utility model; Figure 3 A three-dimensional schematic diagram of a two-stage transmission structure for a control valve provided by this utility model; Figure 4 A perspective view of a three-stage transmission structure for a control valve provided by this utility model; Figure 5 An exploded view of the rotating structure of a control valve provided by this utility model; Figure 6 A schematic diagram of the first side of the drive plate of a control valve provided by this utility model; Figure 7 This is a schematic diagram of the second side of the drive plate of a control valve provided by this utility model.

[0025] In the picture: 1. Drive mechanism; 2. Rotation mechanism; 3. Air pump assembly; 4. Housing; 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. Exhaust port interface; 423. Inflation port interface; 424. Fixed inflation port interface. Detailed Implementation

[0026] The technical solution of this utility model 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 this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0027] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and 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, and therefore should not be construed as a limitation of this utility model. 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 this utility model 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 utility model 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 this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent transformations or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

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.

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