Induction driven snap-lid drain valve

Abstract

The application discloses an inductive driving flap cover drainage valve, which comprises a driving assembly, a driving rope, a hinge mechanism and a flap cover. The driving assembly comprises a wrench, a transmission mechanism, an inductor assembly provided with an inductive circuit line and a motor. The wrench is rotationally connected with the transmission mechanism, and the transmission mechanism is linked with one end of the driving rope. The inductor assembly is arranged in the wrench, and the inductor assembly is connected with the motor through the inductive circuit line. The motor is linked with one end of the driving rope. An inductive port is formed in the side wall of the wrench, and the inductor assembly senses an external control signal through the inductive port. The hinge mechanism comprises a first connecting rod, a second connecting rod, a third connecting rod and a limiting support. The driving rope is connected with the first connecting rod. The first connecting rod and the third connecting rod are pivotally connected with the limiting support, the second connecting rod is pivotally connected with the first connecting rod and the third connecting rod, and the third connecting rod is linked with the flap cover. The inductive driving flap cover drainage valve can realize manual double control water outlet, reduce the rotation frequency and contact frequency of the wrench, keep the wrench clean and make it more convenient for the old and the young to use.

Description

Technical Field

[0001] This invention belongs to the technical field of wired drainage valve equipment, and specifically relates to an induction-driven flap drain valve. Background Technology

[0002] Drain valves with flap covers are typically controlled by a wrench or a button with a lever to drain water. Traditionally, this is manual control. For wrenches, manually turning the wrench to operate the valve leads to frequent contact, making the wrench dirty and unhygienic. Furthermore, the wrench requires a certain amount of force to operate the valve, which is inconvenient for the elderly and children. Currently, contactless sensor control is the development trend for bathroom fixtures; therefore, adding sensor control functionality to the manual wrench can solve these problems. Summary of the Invention

[0003] The purpose of this invention is to provide a sensor-driven flap drain valve that can sense and manually control water output, reducing the frequency of wrench rotation and contact, keeping the wrench clean, and making it more convenient for the elderly and children to use.

[0004] To achieve the above objectives, the solution of the present invention is: an induction-driven flap drain valve, comprising a drive assembly, a drive rope, a hinge mechanism, and a flap.

[0005] One end of the drive rope is linked to the drive assembly, and the other end is linked to the hinge mechanism. The hinge mechanism is linked to the flap cover. When the drive assembly moves the drive rope, the drive rope drives the flap cover to open through the hinge mechanism.

[0006] The drive assembly includes a wrench, a transmission mechanism, a sensor assembly with sensing circuitry, and a motor.

[0007] The wrench is rotatably connected to the transmission mechanism, and the transmission mechanism is linked to one end of the drive rope. Turning the wrench drives the drive rope to move through the transmission mechanism.

[0008] The sensor assembly is located inside the wrench and is connected to a motor via a sensing circuit. The motor is linked to one end of the drive rope. A sensing port is provided on the side wall of the wrench, and the sensor assembly senses external control signals through the sensing port to control the motor to move the drive rope.

[0009] The hinge mechanism includes a first link, a second link, a third link, and a limiting bracket. The other end of the drive rope is connected to the middle of the first link. The limiting bracket is fixed inside the toilet tank. One end of the first link is pivotally connected to the limiting bracket, and the other end is pivotally connected to one end of the second link. The other end of the second link is pivotally connected to the middle of the third link. One end of the third link is pivotally connected to the limiting bracket, and the other end is linked to the lid.

[0010] Furthermore, the sensor assembly includes a sensor transmitter / receiver device, a control circuit board, a sensor PC housing, and sensor circuit lines. The sensor transmitter / receiver device is mounted on the control circuit board and close to the sensor port. The control circuit board is connected to the sensor circuit lines. The sensor PC housing covers the sensor transmitter / receiver device and the control circuit board and is connected and fixed to the wrench to fix the sensor transmitter / receiver device and the control circuit board inside the wrench.

[0011] Furthermore, the wrench includes a wrench body and a wrench shaft, the transmission mechanism is a crank-slider mechanism, the wrench body is fixed to the upper end of the wrench shaft, the lower end of the wrench shaft is rotatably connected to one end of the crank-slider mechanism, and the other end of the crank-slider mechanism is linked to one end of the drive rope.

[0012] Furthermore, the wrench body is a shell structure, or the wrench body has an inner groove, and the sensor assembly is disposed inside the shell or the inner groove, close to the sensing port.

[0013] Furthermore, the wrench body includes a rotating part and a handle, the rotating part is fixed to the upper end of the wrench shaft, and the sensing port is disposed on the end side wall of the handle.

[0014] Furthermore, the motor is connected to one end of the drive rope via a gear and a rack. The gear is mounted on the motor shaft, the rack meshes with the gear, and one end of the drive rope is linked with the rack.

[0015] Furthermore, a connecting rod fixing component is fixed on the limiting bracket, and one end of both the first connecting rod and the third connecting rod is pivotally connected to the connecting rod fixing component.

[0016] Furthermore, it also includes an overflow pipe and a base, the limiting bracket is installed on the overflow pipe, the overflow pipe is fixed on the base, the base is provided with a drain outlet, and the flap is rotatably connected to the drain outlet to open or close the drain outlet.

[0017] Furthermore, the other end of the third link is connected to the cover via a traction rope or chain.

[0018] Furthermore, the drive rope is a steel wire rope, and the steel wire rope is covered with a rope sleeve, allowing the steel wire rope to slide relative to the rope sleeve.

[0019] After adopting the above solution, the beneficial effects of the present invention are as follows:

[0020] This invention features a sensor assembly with integrated circuitry inside the wrench. This sensor assembly is connected to a motor via the circuitry, and the motor is linked to one end of a drive rope. A sensing port is located on the side wall of the wrench. The sensor assembly senses an external control signal through this port and controls the motor's rotation via the circuitry. The motor drives the drive rope, which in turn moves the flap cover via a hinge mechanism, allowing it to open and drain water. Simply waving your hand near the sensing port controls the drain valve, reducing the wrench's rotation and contact frequency while maintaining cleanliness and extending its lifespan. Furthermore, drainage can be controlled without force, making it more convenient for the elderly and children. Alternatively, the wrench can also be linked to the drive rope via a transmission mechanism. Turning the wrench rotates the transmission mechanism, which in turn moves the drive rope, allowing for manual control of the drain valve.

[0021] Since the sensor assembly controls a motor to pull the drive rope, and the motor typically uses gears and racks to drive the drive rope, to ensure the reliability of the connection and interaction between the drive rope's stroke and the flushing lid, this invention incorporates a hinge mechanism between the drive rope and the flushing lid. This hinge mechanism includes a first link, a second link, a third link, and a limiting bracket. The other end of the drive rope is connected to the middle of the first link; the limiting bracket is fixed inside the toilet tank; one end of the first link is pivotally connected to the limiting bracket, and the other end is pivotally connected to one end of the second link; the other end of the second link is pivotally connected to the middle of the third link; one end of the third link is pivotally connected to the limiting bracket, and the other end is linked to the flushing lid. This structure replaces the traditional single-link drive of a wired drain valve with a three-link mechanism. If the drive rope is connected to the center of the first link and the second link is pivotally connected to the center of the third link, according to the lever principle, the swing amplitude of the third link is twice that of the first link. If the drive rope in the existing single-link mechanism is also connected to the center of the link, under the same swing amplitude, the stroke of the drive rope in this invention is only half that of the existing technology. Of course, the pivot position of the second link and the third link can be close to the pivot end of the third link and the limiting bracket, so that the drive rope stroke can be shorter to open the lid. This achieves the goal of using a small drive rope stroke to drive a large link swing amplitude, ensuring sufficient flushing force when the toilet is flushed, and opening the lid faster when the drive rope stroke is reduced, increasing the drainage speed and achieving rapid driving of the lid for drainage. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the flap in the closed state of the present invention;

[0023] Figure 2 This is a schematic diagram of the structure of the present invention with the flap open.

[0024] Figure 3 This is a schematic diagram of the structure of the drive hinge mechanism of the present invention;

[0025] Figure 4 This is a schematic diagram of the structure of the drive hinge mechanism of the present invention;

[0026] Figure 5 This is a schematic diagram of the structure of the wrench of the present invention;

[0027] Figure 6 This is a cross-sectional view of the wrench of the present invention;

[0028] Figure 7 This is an exploded view of the parts of the wrench of the present invention;

[0029] Figure 8 This is an exploded view of the control box of the present invention;

[0030] Figure 9 This is a schematic diagram of the transmission assembly of the present invention mounted on the control box body;

[0031] Figure 10 This is a schematic diagram of the structure of the motor and rack of the present invention mounted on the rear cover of the control box;

[0032] Figure 11 This is a circuit diagram of the sensor assembly of the present invention.

[0033] Label Explanation:

[0034] 1. Drive assembly; 11. Wrench; 111. Wrench body; 1111. Rotating part; 1112. Handle; 112. Wrench shaft; 1121. Wiring channel; 113. Wrench head; 1131. Thread; 1132. Square hole; 114. Nut; 115. Cap; 1151. Wire hole; 116. Inner groove; 117. Sensor port; 12. Transmission mechanism; 121. Crank; 1211. Cross groove; 122. Connecting rod; 123. Main slider; 13. Sensor assembly; 131. Transmitter / receiver device; 132. Control circuit board; 133. Sensor PC housing; 134. Sensor circuit wire; 14. Motor; 2. Drive rope; 21. Rope loop; 22. Secondary slider; 3. Hinge mechanism; 31. First link; 32. Second link; 33. Third link; 34. Limiting bracket; 341. Link fixing component; 35. Chain; 4. Cover; 5. Control box; 51. Front cover; 511. Limiting through hole; 512. Elastic card; 52. Control box body; 521. Upper sliding groove; 522. Lower sliding groove; 53. Rear cover; 531. Gear; 532. Rack; 533. Slide rail; 534. Circular hole; 6. Base; 61. Overflow pipe; 62. Drain outlet; 63. Arc-shaped sleeve; 7. Battery; 8. Power supply circuit; 81. J1 output interface; 9. Control circuit; 91. Control chip; 92. Transmitter; 93. Receiver; 94. J2 output interface. Detailed Implementation

[0035] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0036] This invention provides an induction-driven flap drain valve, such as... Figure 1 As shown, it includes a drive assembly 1, a drive rope 2, a hinge mechanism 3, and a flap cover 4.

[0037] One end of the drive rope 2 is linked to the drive assembly 1, and the other end is linked to the hinge mechanism 3. The hinge mechanism 3 is linked to the flap cover 4. When the drive assembly 1 drives the drive rope 2 to move, the drive rope 2 drives the flap cover 4 to open through the hinge mechanism 3, thereby realizing the drainage valve draining water.

[0038] like Figure 5 , Figure 8 ,and Figure 9 As shown, the drive assembly 1 includes a wrench 11, a transmission mechanism 12, a sensor assembly 13 with a sensing circuit 134, and a motor 14. The wrench 11 is rotatably connected to the transmission mechanism 12, and the transmission mechanism 12 is linked to one end of the drive rope 2. By turning the wrench 11, the drive rope 2 is moved through the transmission mechanism 12, thereby realizing manual control of the drain valve to drain water.

[0039] like Figures 5 to 9 As shown, the wrench 11 includes a wrench body 111 and a wrench shaft 112. The transmission mechanism 12 is a crank-slider mechanism. The wrench body 111 is fixed to the upper end of the wrench shaft 112. The lower end of the wrench shaft 112 is rotatably connected to one end of the crank-slider mechanism. The other end of the crank-slider mechanism is linked to one end of the drive rope 2.

[0040] The transmission assembly is preferably a crank-slider mechanism, which includes a crank 121, a connecting rod 122, and a main slider 123. One end of the crank 121 has a cross-shaped groove 1211, and the lower end of the wrench shaft 112 has a cross-shaped structure. The lower end of the wrench shaft 112 is inserted into the cross-shaped groove 1211 and fixedly connected to the crank 121. The other end of the crank 121 is pivotally connected to one end of the connecting rod 122, and the other end of the connecting rod 122 is pivotally connected to the main slider 123. The main slider 123 is fixedly connected to one end of the drive rope 2; the wrench body 111 includes a rotating part 1111 and a handle 1112. The rotating part 1111 is fixed to the upper end of the wrench shaft 112. By turning the handle 1112 of the wrench 11, the wrench shaft 112 can be rotated, thereby driving the crank 121 to rotate. The crank 121 drives the main slider 123 to slide through the connecting rod 122. The main slider 123 drives the drive rope 2 to move, thereby realizing the manual drive of the drain valve to drain water.

[0041] like Figure 8 and Figure 9The invention also includes a control box 5, comprising a front cover 51, a control box body 52, and a rear cover 53. The control box body 52 is provided with an upper sliding groove 521 and a lower sliding groove 522 arranged parallel to each other. The crank-slider mechanism is disposed on the upper sliding groove 521. A secondary slider 22 is slidably disposed on the lower sliding groove 522. The main slider 123 and the secondary slider 22 are vertically connected and fixed. One end of the drive rope 2 is fixed on the secondary slider 22. When the main slider 123 slides, it drives the secondary slider 22 to slide, thereby driving the drive rope 2 to move.

[0042] After the flapper 4 is opened, the lever 11 can be released. The flapper 4 remains open under the action of buoyancy. When the water level in the toilet tank drops to a level that makes it impossible for the flapper 4 to remain floating, the flapper 4 falls and closes. The hinge mechanism 3 falls and resets under its own gravity, thereby driving the drive rope 2 and drive assembly 1 to reset, in preparation for the next drive.

[0043] like Figures 5 to 7 As shown, the sensor assembly 13 is disposed inside the wrench 11. The wrench body 111 is a shell structure, or the wrench body 111 has an inner groove 116 along its length. The sensor assembly 13 is disposed inside the shell or the inner groove 116. The sensor assembly 13 is connected to the motor 14 through the sensing circuit line 134. The motor 14 is linked to one end of the drive rope 2. A sensing port 117 is provided on the side wall of the wrench 11. The sensor assembly 13 is located near the sensing port 117. The sensor assembly 13 can sense external control signals through the sensing port 117 to sense and control the motor 14 to drive the drive rope 2 to move, thereby realizing the sensing-driven drainage valve to drain water.

[0044] The sensor assembly 13 includes a sensor transmitter / receiver device 131, a control circuit board 9, a sensor PC housing 133, and a sensor circuit line 134. The sensor transmitter / receiver device 131 is mounted on the control circuit board 9 and is close to the sensor port 117. The control circuit board 9 is connected to the sensor circuit line 134. The sensor PC housing 133 is disposed inside the outer shell or inner groove 116 of the wrench 11 and covers the sensor transmitter / receiver device 131 and the control circuit board 9. It is connected and fixed to the wrench 11 to fix the sensor transmitter / receiver device 131 and the control circuit board 9 inside the housing or inner groove 116 of the wrench 11. One end of the sensing circuit line 134 is connected to the control circuit board 9, and the other end is connected to the motor 14. The sensing transmitting and receiving device 131 is an infrared sensing device, including a transmitting end 92 and a receiving end 93. The transmitting end 92 emits infrared rays into the sensing port 117. If the infrared rays encounter an obstruction, they will be reflected to the receiving end 93. The receiving end 93 sends a control signal to the control circuit board 9. After the control circuit board 9 determines that the control signal is valid, it controls the motor 14 to rotate, thereby driving the drive rope 2 to move.

[0045] like Figure 5 As a preferred embodiment, the sensing port 117 is located on the end side wall of the handle 1112, and one side of the end of the handle 1112 is the sensing area. Waving the handle 1112 on one side of the end triggers the sensor assembly 13, thereby sensing and controlling the drain valve to drain water. This design allows the wrench 11 to be installed in any position, such as on the left side wall, right side wall, or front of the toilet tank. When installed on the front of the tank, regardless of the orientation of the handle 1112, the sensing area is on the side, and the toilet lid will not affect the sensing of the induction transmitter and receiver 131.

[0046] Except for the wrench 11, which is installed on the side wall or front of the toilet tank, all other components are installed inside the toilet tank. This is a standard configuration and will not be discussed further. To facilitate the installation of the wrench 11 on the side wall or front of the toilet tank, a wrench 11 screw head is fitted onto the wrench shaft 112. The wrench shaft 112 can rotate relative to the wrench 11 screw head. The wrench 11 screw head has a threaded portion 1131, and a nut 114 is screwed onto the threaded portion 1131. The wrench 11 can be firmly fixed to the toilet tank by the nut 114 and the wrench 11 screw head. In addition, the front cover 51 of the control box 5 is provided with a limiting through hole 511 and an elastic clip 512. The limiting through hole 511 is matched with the lower end of the screw head of the wrench 11. The cross-shaped groove 1211 on the crank 121 is located directly below the limiting through hole 511. The lower end of the wrench shaft 112 extends out of the screw head of the wrench 11. When the lower end of the screw head of the wrench 11 is inserted into the limiting through hole 511, the elastic clip 512 is located on both sides of the screw head of the wrench 11 to lock and fix the screw head of the wrench 11. The lower end of the wrench shaft 112 passes through the limiting through hole 511 and is limited and connected to the cross-shaped groove 1211, so as to realize the connection between the wrench 11 and the control box 5.

[0047] like Figure 6As shown, a cap 115 is provided between the rotating part 1111 of the wrench 11 and the wrench shaft 112. The rotating part 1111 has a snap-fit ​​mechanism inside that is fastened to the cap 115. The cap 115 is locked and fixed to the upper end of the wrench shaft 112 by screws. The cap 115 has a wire hole 1151. The wrench shaft 112 has a wiring channel 1121 corresponding to the wire hole 1151 along the axial direction. The lower end of the threaded part 1131 on the screw head of the wrench 11 has a square hole 1132. One end of the sensing circuit line 134 in the handle 1112 is connected to the control circuit board 9, and the other end extends along the length of the wrench 11 to the rotating part 1111 and passes through the wire hole 1151, the wiring channel 1121, and the square hole 1132 in sequence to connect to the motor 14. This design allows the sensing circuit line 134 to be built inside, reducing the space occupied and protecting the sensing circuit line 134. The other end of the sensing circuit line 134 is provided with two interfaces that are connected to the motor 14 and the battery 7 respectively. The battery 7 supplies power to the sensor assembly 13 to ensure the normal operation of the sensor assembly 13.

[0048] Figure 11 The circuit diagram of the sensor assembly 13 of the present invention includes a power supply circuit 8 and a control circuit 9. The power supply circuit 8 supplies power to the control circuit 9. The control center of the control circuit 9 is a control chip 91 set on the control circuit 9 board. The transmitting end 92 of the induction transmitting and receiving device 131 is connected to interface 11 of the control chip 91, and the receiving end 93 is connected to interface 16 of the control chip 91. Interface 8 of the control chip 91 is connected to the J2 output interface 94. The J2 output interface 94 is used to connect to the motor 14. The control chip 91 has a waveform simulation program for the current change when the motor 14 is stalled, i.e., the motor 14 delay program. The infrared light emitted by the transmitting end 92 will be reflected back to the receiving end 93 when it touches the obstruction. The receiving end 93 sends a control signal to the control chip 91. After the control chip 91 confirms the valid signal, it controls the motor 14 to rotate forward. When the motor 14 is detected to be in position, i.e., when the flap 4 is fully open and cannot be pulled, after a specified delay, i.e. after the drainage is completed, the motor 14 is controlled to rotate in reverse. When it rotates back to its original position, the motor 14 stops. The control chip 91 connects to the power supply circuit 8 via interface 2, and the power supply circuit 8 connects to the battery 7 via the J1 output interface 81 to provide power.

[0049] like Figure 8 and Figure 10As shown, the motor 14 is mounted on the rear cover 53 of the control box 5. The motor 14 is linked to the drive rope 2 via a gear 531 and a rack 532. A gear 531 is fitted on the shaft of the motor 14, and the gear 531 meshes with the rack 532. The rear cover 53 has a slide rail 533 for the rack 532 to slide, and a circular hole 534 communicating with the inside of the slide rail 533. The shaft of the motor 14 passes through the circular hole 534 to allow the gear 531 to mesh with the rack 532. The motor 14 can drive the rack 532 to slide via the gear 531. The rack 532 has a notch, and a push post extends downward from the bottom of the auxiliary slider 22. The push post extends into the notch and abuts against the rack 532. When the rack 532 slides, it can push the auxiliary slider 22 to slide.

[0050] Because the rack 532 has a certain length, its sliding distance on the slide rail 533 is limited. Therefore, the stroke of the rack 532 that drives the drive rope 2 is less than the stroke of the drive rope 2 driven by the transmission mechanism 12 in manual drive. In other words, the stroke of the drive rope 2 in inductive drive is small. To ensure the reliability of the connection and interaction between the drive rope 2 and the lid, this invention provides a hinge mechanism 3, improving the traditional single-link transmission to a three-link transmission. Specifically, the hinge mechanism 3 includes a first link 31, a second link 32, a third link 33, and a limiting bracket 34. The other end of the drive rope 2 is connected to the middle of the first link 31. The limiting bracket 34 is fixed inside the toilet tank. One end of the first link 31 is pivotally connected to the limiting bracket 34, and the other end is pivotally connected to one end of the second link 32. The other end of the second link 32 is pivotally connected to the middle of the third link 33. One end of the third link 33 is pivotally connected to the limiting bracket 34, and the other end is linked to the lid 4 via a traction rope or chain 35.

[0051] like Figure 3 and Figure 4As shown, when the drive assembly 1 moves the drive rope 2, the drive rope 2 pulls the first link 31 to swing upward. The first link 31 can drive the second link 32 to rotate clockwise, that is, one end of the second link 32 swings upward and the other end swings downward. The downward swing of the other end of the second link 32 can drive the third link 33 to swing upward counterclockwise. If the drive rope 2 is connected to the center of the first link 31 and the second link 32 is pivotally connected to the center of the third link 33, according to the lever principle, the swing amplitude of the third link 33 is twice that of the first link 31. If the drive rope 2 in the existing single-link mechanism is also connected to the center of the link, under the same swing amplitude, the stroke of the drive rope 2 in this invention is only half that of the existing technology. Furthermore, to achieve the same opening amplitude as the flap 4 of the present invention, the existing technology requires the drive rope 2 to be connected near the pivot end of the connecting rod and the limiting bracket 34, with the distance from the pivot end being one-quarter of the length of the entire connecting rod. However, compared with the present invention, the swing amplitude of the connecting rod in the existing technology is greater than the swing amplitude of the first connecting rod 31 in the present invention. Therefore, the change in the direction of the force of the drive rope 2 pulling the connecting rod in the existing technology is greater than the change in the direction of the force of the drive rope 2 pulling the first connecting rod 31 in the present invention. Thus, compared with the existing technology, the present invention is easier to pull the first connecting rod 31.

[0052] from Figure 3 and Figure 4 As can be seen from the diagram, the lever arm ratio of the first link 31 to the third link 33 in the early stage of the drive is greater than that in the later stage of the drive. Therefore, the force required to drive the first link 31 in the early stage of the drive is less than that in the later stage of the drive. In the early stage of the drive, not much force is needed to pull the first link 31. In the later stage of the drive, the lever arm of the first link 31 decreases while the lever arm of the third link 33 remains unchanged. Although a greater force is required to pull the first link 31, the cover 4 has already been pulled. The cover 4 has an upward buoyancy, which can overcome the defect of the reduced lever arm of the first link 31. In the later stage of the drive, not much force is needed to pull the first link 31.

[0053] Of course, as a preferred embodiment, the pivot position of the second link 32 and the third link 33 of the present invention can be close to the pivot end of the third link 33 and the limiting bracket 34, so that the drive rope 2 can open the flap cover 4 with a shorter stroke, thereby achieving a large swing amplitude of the link using a small drive rope 2 stroke, ensuring sufficient flushing force when the toilet is flushed, and opening the flap cover 4 faster when the drive rope 2 stroke is reduced, thereby increasing the drainage speed.

[0054] like Figure 1 and Figure 2As shown, the present invention also includes an overflow pipe 61 and a base 6 disposed inside the toilet tank. The limiting bracket 34 is mounted on the overflow pipe 61, and the overflow pipe 61 is fixed on the base 6. The base 6 is provided with a drain outlet 62, and the flap cover 4 is rotatably connected to the drain outlet 62 to open or close the drain outlet 62. As a preferred embodiment, an arc-shaped retaining sleeve 63 is provided between the limiting bracket 34 and the overflow pipe 61 to accommodate overflow pipes 61 of different diameters. The battery 7 can be disposed at the top of the overflow pipe 61 for easy connection to the sensing circuit line 134.

[0055] In this embodiment, the limiting bracket 34 is provided with a connecting rod fixing member 341. The connecting rod fixing member 341 is provided with two through holes. One end of the first connecting rod 31 and the third connecting rod 33 are respectively pivotally connected to the two through holes of the connecting rod fixing member 341. The connecting rods are pivotally connected to one end of the first connecting rod 31 and the second connecting rod 32 through the through holes by a pin. The connecting rods can rotate relative to the connecting rod fixing member 341.

[0056] In a preferred embodiment, the drive rope 2 can be a stainless steel wire rope, with a rope sleeve 21 covering it. One end of the rope sleeve 21 passes through the control box 5, and the other end passes through the connecting rod fixing member 341. The wire rope slides relative to the rope sleeve 21, and the rope sleeve 21 provides support and protection for the wire rope. Of course, the drive rope 2 can also be a traction rope made of other materials.

[0057] The above description is only a preferred embodiment of the present invention and is not intended to limit the design of this case. All equivalent changes made based on the key design features of this case shall fall within the protection scope of this case.

Claims

1. A sensor-driven flap drain valve, characterized in that: Includes drive components, drive rope, hinge mechanism, and flap cover; One end of the drive rope is linked to the drive assembly, and the other end is linked to the hinge mechanism. The hinge mechanism is linked to the flap cover. When the drive assembly moves the drive rope, the drive rope drives the flap cover to open through the hinge mechanism. The drive assembly includes a wrench, a transmission mechanism, a sensor assembly with sensing circuitry, and a motor. The wrench is rotatably connected to the transmission mechanism, and the transmission mechanism is linked to one end of the drive rope. Turning the wrench drives the drive rope to move through the transmission mechanism. The sensor assembly is located inside the wrench and is connected to a motor via a sensing circuit. The motor is linked to one end of the drive rope. A sensing port is provided on the side wall of the wrench, and the sensor assembly senses external control signals through the sensing port to control the motor to move the drive rope. The motor is connected to one end of the drive rope via a gear and a rack. The gear is mounted on the motor shaft, the rack meshes with the gear, and one end of the drive rope is linked to the rack. The hinge mechanism includes a first link, a second link, a third link, and a limiting bracket. The other end of the drive rope is connected to the middle of the first link. The limiting bracket is fixed inside the toilet tank. One end of the first link is pivotally connected to the limiting bracket, and the other end is pivotally connected to one end of the second link. The other end of the second link is pivotally connected to the middle of the third link. One end of the third link is pivotally connected to the limiting bracket, and the other end is linked to the lid.

2. The induction-driven flap drain valve as described in claim 1, characterized in that: The sensor assembly includes a sensor transmitter / receiver, a control circuit board, a sensor PC housing, and sensor circuit lines. The sensor transmitter / receiver is mounted on the control circuit board and close to the sensor port. The control circuit board is connected to the sensor circuit lines. The sensor PC housing covers the sensor transmitter / receiver and the control circuit board and is connected and fixed to the wrench to fix the sensor transmitter / receiver and the control circuit board inside the wrench.

3. The induction-driven flap drain valve as described in claim 1, characterized in that: The wrench includes a wrench body and a wrench shaft. The transmission mechanism is a crank-slider mechanism. The wrench body is fixed to the upper end of the wrench shaft. The lower end of the wrench shaft is rotatably connected to one end of the crank-slider mechanism. The other end of the crank-slider mechanism is linked to one end of the drive rope.

4. The induction-driven flap drain valve as described in claim 3, characterized in that: The wrench body is a shell structure, or the wrench body has an inner groove, and the sensor assembly is located inside the shell or the inner groove, close to the sensing port.

5. The induction-driven flap drain valve as described in claim 3 or 4, characterized in that: The wrench body includes a rotating part and a handle. The rotating part is fixed to the upper end of the wrench shaft, and the sensing port is disposed on the end side wall of the handle.

6. The induction-driven flap drain valve as described in claim 1, characterized in that: The limiting bracket is fixed with a connecting rod fixing component, and one end of the first connecting rod and the third connecting rod are pivotally connected to the connecting rod fixing component.

7. The induction-driven flap drain valve as described in claim 1, characterized in that: It also includes an overflow pipe and a base. The limiting bracket is installed on the overflow pipe, the overflow pipe is fixed on the base, the base is provided with a drain outlet, and the flap is rotatably connected to the drain outlet to open or close the drain outlet.

8. The induction-driven flap drain valve as described in claim 1, characterized in that: The other end of the third link is connected to the cover via a traction rope or chain.

9. The induction-driven flap drain valve as described in claim 1, characterized in that: The drive rope is a steel wire rope, and the steel wire rope is covered with a rope sleeve, which allows the steel wire rope to slide relative to the rope sleeve.

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