Water inlet assembly for intelligent toilet and intelligent cover plate

Abstract

The application discloses a water inlet assembly for an intelligent toilet and an intelligent cover plate, and belongs to the technical field of intelligent toilets. The water inlet assembly comprises a water inlet part, a water storage chamber arranged below the water inlet part, and an anti-backflow space formed between the water storage chamber and the water inlet part. The water storage chamber is internally provided with a first water chamber and a second water chamber which are in communication with each other, and a buoyancy part is arranged between the first water chamber and the second water chamber. The first water chamber is provided with a water discharge channel. A water control structure comprises a pressure bearing part, a transmission group and a water sealing group. The pressure bearing part is arranged in the second water chamber and is driven to move axially along the water storage chamber by water pressure. One end of the transmission group is connected to the pressure bearing part, and the other end of the transmission group acts on the water sealing group to drive the water sealing group to move synchronously. The water sealing group is arranged in the water inlet part and is opened and closed with the water inlet channel being acted on by the transmission group. The water inlet assembly and the intelligent cover plate provided by the application solve the problem that the existing water inlet assembly cannot simultaneously meet the anti-backflow and water storage tank timely water supplement requirements.

Description

Technical Field

[0001] This invention relates to the field of bathroom product technology, specifically to a water inlet component and a smart toilet seat. Background Technology

[0002] As we all know, existing smart toilets have a wide range of functions, and users can choose various functions according to different needs and price ranges. However, functions such as bidet and feminine wash are essential basic functions of smart toilets.

[0003] However, current smart toilets all need to be equipped with anti-backflow functions for their water inlet components. This is to prevent water from flowing back to the inlet from the pipes connected to the various water outlets (such as bidet and feminine wash), thus ensuring hygiene. For example, the water flow from the seat flushing channel should not flow back to the inlet. Also, the water stored in the bidet and feminine wash sections should not be connected to the inlet pipe. Otherwise, when other water lines (such as the kitchen's drinking water line) are turned on, there is a chance that this stored water will be drawn in due to siphon effects, resulting in poor hygiene. This is also why a water tank is needed to supply water for the bidet and feminine wash sections. If the pipes are directly connected, backflow will inevitably occur.

[0004] However, using a water storage system for posterior and feminine wash presents another problem: the water storage capacity of the posterior and feminine wash is limited, and water cannot be replenished quickly after use. This results in the water stopping when the user is halfway through using the wash (i.e., before rinsing is complete), which leads to a poor overall user experience.

[0005] In summary, there is an urgent need for a water inlet component that can simultaneously solve the problems of preventing backflow and ensuring uninterrupted water supply to meet usage requirements. Summary of the Invention

[0006] The purpose of this invention is to overcome the aforementioned defects or problems in the prior art and to provide a water inlet component and a smart toilet seat that are simple in structure, easy to manufacture, easy to implement and low in cost, thus solving the problem that existing water inlet components cannot simultaneously meet the requirements of preventing backflow and timely replenishment of the water tank.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A water inlet assembly for a smart toilet, the water inlet assembly comprising:

[0009] The water inlet component has a water inlet channel;

[0010] A water storage chamber is disposed below the water inlet, and a backflow prevention space is formed between the water storage chamber and the water inlet to isolate the water outlet of the water inlet channel from the water storage chamber; the water storage chamber is provided with a first water chamber and a second water chamber that are interconnected, and a buoyancy component is installed between the first and second water chambers; the first water chamber has a drainage channel.

[0011] The water control structure includes a pressure-bearing component, a transmission assembly, and a water-sealing assembly. The pressure-bearing component is located in the second water chamber and is driven by the water force to move along the axial direction of the water storage chamber. One end of the transmission assembly is connected to the pressure-bearing component, and the other end acts on the water-sealing assembly to drive the water-sealing assembly to move synchronously. The water-sealing assembly is located in the water inlet component and opens and closes the water inlet channel with the action of the transmission assembly.

[0012] The water flowing into the first water chamber through the inlet channel enters the second water chamber after passing over the top surface of the first water chamber. The water flow acts on the pressure-bearing component to move upward, which in turn drives the transmission group to move and push the sealing water group to displace, thereby blocking the inlet channel and forming an anti-backflow structure.

[0013] Preferably, the first water chamber has a convex cross-section and an opening in the middle; the opening corresponds to the outlet end of the water inlet channel, and the diameter of the opening is larger than the outer diameter of the outlet end of the water inlet channel.

[0014] Preferably, the second water chamber is located on the outer periphery of the protruding portion of the first water chamber and is arranged in a ring shape; the pressure-bearing member is configured as an annular float, which is installed in the second water chamber; a through hole is opened between the first water chamber and the second water chamber, corresponding to the position of the annular float, so that the first water chamber and the second water chamber are connected; wherein, the buoyancy member is installed at the through hole and is used to open and close the through hole.

[0015] Preferably, a water passage gap is formed between the annular float and the first water chamber; wherein, after the buoyancy member is lifted by water pressure and blocks the through hole, the water flows over the top surface of the protruding part of the first water chamber and enters the water passage gap until the second water chamber, thus driving the annular float to move.

[0016] Preferably, the buoyancy component includes a hook portion and a pressure-receiving portion integrated together, the pressure-receiving portion being located in the first water chamber; the hook portion being located in the second water chamber, and the length of the hook portion being greater than the thickness of the shell, so that the pressure-receiving portion is pushed upward by water pressure to block the through hole or falls due to its own weight to open the through hole when pressure is lost.

[0017] Preferably, the water sealing assembly is located within a cavity formed inside the water inlet component, and this cavity connects the inlet end and outlet end of the water inlet channel; the water sealing assembly includes a water sealing diaphragm, a guide rod, and a sealing plug; the water sealing diaphragm is movably fitted onto the guide rod located in the cavity and is used to open or close the inlet end; the water sealing diaphragm divides the cavity into a pressure chamber and a water passage chamber, and a flow guide hole is provided on the water sealing diaphragm or the guide rod to allow water to enter the pressure chamber; wherein, the pressure chamber is provided with a pressure discharge hole, and the pressure of the pressure chamber is changed by correspondingly blocking or opening the pressure discharge hole through the sealing plug installed on the transmission assembly, thereby linking the water sealing diaphragm to close or open the inlet end.

[0018] Preferably, the transmission assembly includes a linkage member, one end of which is hinged to the bottom of the water inlet member and rotates about the hinge shaft to cover the pressure relief hole; the linkage member directly or indirectly cooperates with the pressure-bearing member in the second water chamber so that the pressure-bearing member drives the linkage member to block or open the pressure relief hole.

[0019] Preferably, the transmission assembly further includes a bridging member, the two ends of which are respectively hinged to the other end of the linkage member and the water inlet member, and the pressure bearing member is eccentrically hinged to the bottom of the bridging member and close to the hinge position with the linkage member.

[0020] Preferably, the bridging component is configured as a water receiving tray with a guide groove for receiving water flowing out of the pressure relief hole and guiding it into the first water chamber of the water storage chamber.

[0021] Preferably, the sealing plug is installed on the linkage and moves with the linkage to open and close the pressure relief hole accordingly.

[0022] A smart toilet seat is installed on a toilet bowl. The smart toilet seat includes a seat body, a water inlet valve, a control board, a bidet water outlet, and a feminine wash water outlet. It also includes the aforementioned water inlet assembly, which is installed on the seat body via an installation structure, and the water inlet end of the water inlet component of the water inlet assembly is connected to the water inlet valve. The water outlet end of the drainage channel is directly or indirectly connected to the bidet water outlet and the feminine wash water outlet.

[0023] As can be seen from the above description of the present invention, compared with the prior art, the present invention has the following beneficial effects:

[0024] (1) This invention provides a water inlet component and a smart toilet seat, which are simple in structure, easy to manufacture, easy to implement, and low in cost, solving the problem that existing water inlet components cannot simultaneously meet the requirements of preventing backflow and timely water replenishment of the water tank. The water inlet component of this invention is used for water supply to the bidet and feminine wash modules. A height difference is formed between the water inlet component and the water storage chamber to achieve the first layer of air barrier, thus preventing water in the water storage chamber from flowing back into the water inlet channel. In addition, this invention also sets up a water control structure, which performs two functions at the same time. When the water level changes in the two water chambers (the first water chamber and the second water chamber) of the water storage chamber, the water inlet channel is blocked, that is, the second layer of barrier, which provides a double protection mechanism to prevent water from flowing back into the water inlet channel. The water supply system simultaneously ensures timely replenishment of the water storage chamber, guaranteeing uninterrupted water supply during posterior and feminine washes. Specifically: the first water chamber in the storage chamber serves as the direct water source for posterior or feminine washes. During use, water from the first chamber drains through the drain channel. When the water level reaches a pre-set height, the pressure-bearing components in the second water chamber lose their water pressure, triggering the linkage to open the water inlet channel for continuous water replenishment. Water flows into the first water chamber through the inlet channel, ensuring sufficient water supply and preventing water shortages. After posterior or feminine washes, the water in the first chamber fills and flows into the second water chamber. The pressure-bearing components in the second water chamber, under water pressure, cause the linkage and water sealing group to close the water inlet channel again, stopping the water supply.

[0025] This invention achieves two core functions simultaneously with a single mechanical structure. Its structure is simple and highly interconnected. Compared to electronic control methods, it offers superior stability. For example, water replenishment via a level sensor for monitoring the liquid level suffers from several drawbacks: firstly, components are unreliable and prone to damage; secondly, the power supply and control system are cumbersome; and thirdly, it is prone to repeated opening and closing. For instance, water replenishment often begins when the level is slightly below the set level, and as soon as the inlet valve opens, the replenished water immediately surpasses the set level, causing the solenoid valve to close again. This repeated rapid opening and closing not only affects the lifespan but also results in noise from the solenoid valve, negatively impacting the user experience. Fourthly, in the event of a power outage or sensor malfunction, continuous or no water supply is highly likely, leading to poor safety and reliability. In contrast, this invention uses a purely mechanical mechanism, employing changes in water level as the switching signal. It completely eliminates the need to consider power supply issues, resulting in high reliability, long lifespan, and reduced susceptibility to damage and failure. Furthermore, its low cost and ingenious dual-function linkage design are remarkable.

[0026] (2) The present invention designs the first water chamber in the shape of a convex character and opens an opening in the middle, so that the water in the water inlet channel can flow into the first water chamber more smoothly when it is open in the middle.

[0027] (3) The pressure-bearing component described in this invention is an annular float, which is sleeved on the outer periphery of the protruding part of the first water chamber. This structural design allows the pressure-bearing component to use the buoyancy of water as a driving force to act on the transmission group and the sealing group, thereby realizing the water control (water replenishment) switch function. It directly uses the water level change in the water storage chamber as a reference, resulting in better linkage and higher reliability.

[0028] (4) The present invention uses a buoyancy component as a switch for opening and closing the guide hole of the first water chamber and the second water chamber. It also achieves connection and closure through the action of water flow. When it cooperates with the pressure-bearing component, when the water level of the first water chamber reaches the buoyancy component, the water of the second water chamber flows into the first water chamber to play a role in replenishing water. At the same time, the water of the second water chamber is discharged. When the water inlet channel is open, the second water chamber will not always be in a water storage state. It will not be possible to close after a small amount of water is added and open again after some water is discharged. It is not easy to have repeated opening and closing actions.

[0029] (5) The water sealing assembly of the present invention includes a water sealing diaphragm, a guide rod and a sealing plug. It opens and closes the water inlet end of the water inlet channel by means of pressure difference. This method has a clever structural design. It can easily open and close the water inlet end by blocking the small hole of the pressure discharge hole. Its driving force is small. In addition, although this method seems to be common in the bathroom field, its function and usage environment are different. Combined with the linkage of the transmission group and the pressure bearing component (ring float), the water level change is used as the start response signal. After opening and closing, the water flow slowly enters the pressure chamber, which plays a role in bidirectional pressure balance and delay. This allows the water flow through the water chamber to be completely discharged, ensuring that the residual water in the water inlet channel will not flow back and mix into the water inlet end. The reliability and safety are further improved.

[0030] (6) The transmission assembly of the present invention achieves multi-axis linkage through linkage, bridging and hinge shaft, realizes the control of pressure chamber by pressure bearing component, and makes up for the height difference in space. In this way, pressure bearing component can open and close pressure discharge hole during short distance movement. In addition, opening and closing pressure discharge hole in the form of rotation improves response speed. More importantly, the present invention configures the bridging component with water receiving tray so that the water flow discharged from pressure chamber by pressure discharge hole is guided by water receiving tray and smoothly introduced into first water chamber, without leakage to other places and ensuring the hygiene of the entire component. Attached Figure Description

[0031] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the following description of the embodiments are briefly introduced. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 This is a three-dimensional exploded view of the water inlet assembly described in this invention;

[0033] Figure 2 This is a three-dimensional structural diagram of the water inlet assembly described in this invention;

[0034] Figure 3 This is a cross-sectional view of the water inlet assembly described in this invention;

[0035] Figure 4 This is a schematic diagram of the water inlet assembly in the water inlet state according to the present invention;

[0036] Figure 5 This is a schematic diagram of the water inlet assembly in the water-sealing state according to the present invention;

[0037] Figure 6 This is a three-dimensional structural diagram of the smart cover plate equipped with the water inlet component according to the present invention. Detailed Implementation

[0038] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are preferred embodiments of the present invention and should not be considered as excluding other embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0039] Unless otherwise expressly defined, the use of terms such as "first," "second," or "third" in the claims, description, and accompanying drawings of this invention is for distinguishing different objects and not for describing a specific order.

[0040] Unless otherwise expressly defined, in the claims, description, and accompanying drawings of this invention, the use of directional terms such as "center," "lateral," "longitudinal," "horizontal," "vertical," "top," "bottom," "inner," "outer," "upper," "lower," "front," "rear," "left," "right," "clockwise," and "counterclockwise" to indicate orientation or positional relationships is based on the orientation and positional relationships shown in the accompanying drawings and is only for the convenience of describing the invention and simplifying the description, and is not intended to 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 limiting the specific scope of protection of this invention.

[0041] Unless otherwise expressly defined, the terms "fixed connection" or "fixed connection" used in the claims, description and drawings of this invention should be interpreted broadly to refer to any connection in which there is no displacement or relative rotation relationship between the two parties, including non-removable fixed connection, detachable fixed connection, integral connection and fixed connection by other means or components.

[0042] In the claims, description and accompanying drawings of this invention, the terms "comprising," "having," and variations thereof are used to mean "including but not limited to."

[0043] See Figure 1-4 This embodiment describes a water inlet component for a smart toilet, using the water inlet component for supplying water to the bidet and feminine wash modules as an example.

[0044] The water inlet assembly described in this embodiment includes:

[0045] Water inlet 1 has a water inlet channel 11. In this embodiment, the water inlet 1 is injection molded and has a water inlet channel 11 inside. The water inlet channel 11 has a water inlet end 111, a water outlet end 112 and a cavity 12 located in the middle of the water inlet channel 11. In the water inlet state, after the water flows in from the water inlet end 111, it first flows through the cavity 12 and then turns into the water outlet end 112 and flows out, and enters the water storage chamber 2.

[0046] The water storage chamber 2 is disposed below the water inlet 1, and a backflow prevention space 3 is formed between the water storage chamber 2 and the water inlet 1, so that the water outlet 112 of the water inlet channel 11 is isolated from the water storage chamber 2.

[0047] The water storage chamber 2 is provided with a first water chamber 21 and a second water chamber 22 that are interconnected, and a buoyancy element 4 is provided at the connection between the first and second water chambers 21 and 22. It should be noted that in this embodiment, the first water chamber 21 has a convex cross-section, is hollow, and has an opening 211 in the middle. The opening 211 is provided for the outlet end 112 of the water inlet channel 11, and the diameter of the opening 211 is larger than the outer diameter of the outlet end 112 of the water inlet channel 11. This allows the water in the water inlet channel 11 to enter the first water chamber 21 more smoothly and is less likely to leak out, thus preventing water seepage.

[0048] The first water chamber 21 is provided with a drainage channel 212. In this embodiment, the drainage channel 212 is located at the bottom of the first water chamber 21 and is connected to the buttock washing module and / or feminine washing module through a pipeline.

[0049] The water control structure 5 includes a pressure-bearing component 51, a transmission assembly 52, and a water sealing assembly 53.

[0050] The pressure-bearing component 51 is disposed in the second water chamber 22 and is driven by the water force to move along the axial direction of the water storage chamber 2. In this embodiment, the pressure-bearing component 51 is configured as an annular float, which is sleeved on the outer periphery of the protrusion 21A of the first water chamber, and a through hole B is opened corresponding to the position of the float to make the first water chamber 21 and the second water chamber 22 communicate. The buoyancy component 4 is installed at the through hole B and is used to open and close the through hole B.

[0051] It should be noted here that the buoyancy component 4 includes a hook part 41 and a pressure-receiving part 42 that are integrated together. The pressure-receiving part 42 is located in the first water chamber 21, and the hook part 41 is located in the second water chamber 22. The length of the hook part 41 is greater than the thickness of the shell (so that the pressure-receiving part 42 will not fall out of the second water chamber 22 when it falls under its own weight, and the water in the second water chamber 22 can flow into the first water chamber 21 under its own weight). This allows the pressure-receiving part 42 to be pushed upward by water pressure to block the through hole B, or to fall under its own weight to open the through hole B when the pressure is lost.

[0052] A water passage gap C is formed between the annular float 51 and the outer peripheral wall of the protruding part 21A of the shell; wherein, after the buoyancy member 4 is lifted up by the water pressure and blocks the through hole B, the water flows over the top surface of the protruding part 21A of the shell and enters the water passage gap C until the second water chamber 22, and pushes the pressure-bearing member 51 to move upward.

[0053] The water sealing assembly 53 is located inside the water inlet 1 and opens and closes the water inlet channel 11 as the transmission assembly 52 is activated.

[0054] In this embodiment, the water sealing assembly 53 is disposed within the cavity 12 formed inside the water inlet 1, and the cavity 12 connects the water inlet end 111 and the water outlet end 112 of the water inlet channel 11; the water sealing assembly 53 includes a water sealing diaphragm 531, a guide rod 532, and a sealing plug 533; the water sealing diaphragm 531 is movably sleeved on the guide rod 532 located in the cavity 12, and is used to open or close the water inlet end 111; the water sealing diaphragm 531 will... The cavity 12 is divided into a pressure cavity 121 and a water passage cavity 122, and a guide hole E is provided on the water sealing diaphragm 531 or the guide rod 532 to allow water to enter the pressure cavity 121; the pressure cavity 121 is provided with a pressure discharge hole 121A, and the pressure discharge hole 121A is blocked or opened by the sealing plug 533 installed on the transmission assembly 52 to change the pressure of the pressure cavity 121, thereby linking the water sealing diaphragm 531 to close or open the water inlet end 111.

[0055] One end of the transmission assembly 52 is connected to the pressure-bearing member 51, and the other end acts on the water-sealing assembly 53 to make the water-sealing assembly 53 move in tandem. The transmission assembly 52 includes a linkage member 521, one end of which is hinged to the bottom of the water inlet member 1 and rotates about the hinge shaft D to cover the pressure discharge hole 121A. The linkage member 521 cooperates directly or indirectly with the pressure-bearing member 51 so that the pressure-bearing member 51 drives the linkage member 521 to block or open the pressure discharge hole 121A.

[0056] The water flowing into the first water chamber 21 through the water inlet channel 11 passes over the top surface of the first water chamber 21 and enters the second water chamber 22, causing the water flow to act on the pressure-bearing component 51 to move upward. The linkage transmission group 52 pushes the sealing water group 53 to block the water inlet channel 11.

[0057] More specifically, the transmission assembly 52 further includes a bridging member 522, whose two ends are respectively hinged to the other end of the linkage member 521 and the water inlet member 1. The pressure bearing member 51 is eccentrically hinged to the bottom of the bridging member 522 and close to the hinge position with the linkage member 521 (here, eccentric hinge refers to the position of its hinge shaft being offset relative to the line connecting the hinge shafts at both ends of the bridging member). In this invention, the bridging member 522 is configured as a guide channel 522A, on which a guide channel 522A is provided so that the water flowing out of the pressure discharge hole 121A is guided into the first water chamber 21 of the water storage chamber 2 through the guide channel 522A of the water receiving plate.

[0058] More specifically, the sealing plug 533 is mounted on the linkage 521 and moves with the linkage 521 to correspondingly open and close the pressure relief hole 121A.

[0059] For detailed implementation methods, please refer to Figure 1-6 The present invention is illustrated by an example of an intelligent cover plate equipped with the aforementioned water inlet assembly, which mainly includes the following parts: water inlet component 1, water inlet channel 11, water inlet end 111, water outlet end 112, cavity 12, pressure relief hole 121A, pressure chamber 121, water passage chamber 122, water storage chamber 2, first water chamber 21, protrusion 21A, opening 211, drainage channel 212, second water chamber 22, anti-backflow space 3, buoyancy component 4, and water control structure. Component 5, pressure-bearing component 51, transmission assembly 52, water sealing assembly 53, annular float 51, through hole B, hook part 41, pressure-bearing part 42, water sealing assembly 53, water sealing diaphragm 531, guide rod 532, sealing plug 533, flow guide hole E, linkage component 521, hinge shaft D, bridging component 522, flow guide groove 522A, cover plate body 6, water inlet valve (not shown in the figure), control board 7, posterior wash water outlet and feminine wash water outlet (not shown in the figure);

[0060] In actual assembly and use:

[0061] (1) Water inlet 1, which is injection molded and is divided into a cover 1A and a main body 1B. A cavity 12 is formed between the cover 1A and the main body 1B. A guide rod 532 is installed in the cavity 12 and located on the bottom wall of the pressure chamber 121. A flow guide hole E is opened on the guide rod 532. After the water sealing diaphragm 531 is sleeved on the guide rod 532, the flow guide hole E allows water to enter the pressure chamber 121. It should be noted that after the cover 1A and the main body 1B are fixedly connected, a water inlet end 111 and a water outlet end 112 are formed that connect the cavity 12.

[0062] (2) Subsequently, a linkage member 521 is hinged below the pressure chamber 121. This invention uses a linkage plate equipped with a sealing plug 533 as an example. One end of the linkage plate 521 is hinged below the pressure chamber 121, and the other end is placed inside the bridging member 522 (water receiving tray), and the two are hinged and rotate with each other (it should be noted that the hinge groove is located on the linkage member 521, and the hinge groove is arranged in a racetrack shape; in addition, the hinge shaft has a limiting lug on the outside to restrict the hinge shaft from exiting the hinge groove); while the other end of the bridging member 522 is hinged inside the main body 1B, and is offset from the hinge point of the linkage plate 521; the water receiving tray 522 An extension 522B is also eccentrically provided below, which is hinged to the annular float 51. This arrangement allows the annular float 51 to move up and down linearly, causing the water receiving plate 522 to rotate upward about the hinge shaft D at the other end of the bridging member 522. During the upward rotation of the water receiving plate 522, the linkage plate 521 hinged to it rotates about the hinge shaft D below the pressure chamber 121, so that the linkage plate 521 can block or open the pressure relief hole 121A. At the same time, after the pressure relief hole 121A drains the water from the pressure chamber 121, it is received by the water receiving plate 522 and then introduced into the first water chamber 21 from the guide channel 522A.

[0063] (3) In addition, the position of the main body 1B corresponding to the installation of the linkage 521 and the bridging component 522 is the anti-backflow space 3, and the corresponding side wall is provided with an opening window F that communicates with the outside, serving as an overflow outlet.

[0064] (4) Water storage chamber 2, which is assembled by two shells 2A and 2B (in this invention, a U-shaped outer shell 2A is filled with an annular inner shell 2B to form the water storage chamber 2, and then the water storage chamber 2 is sealed and connected to the main body 1B of the water inlet 1), so that a convex first water chamber 21 and an annular second water chamber 22 are formed inside, and a through hole B is provided between the first water chamber 21 and the second water chamber 22;

[0065] (5) Before the annular inner shell 2B is installed into the U-shaped outer shell 2A, the buoyancy component 4 is rotated into the through hole B so that the hook part 41 of the buoyancy component 4 is located in the annular inner shell 2B; then the annular inner shell 2B is installed, and the outer bottom surface and the middle hollow part of the annular inner shell 2B are the first water chamber 21; then the annular float 51 is installed, and the annular float 51 is hinged to the lower extension 522B of the water receiving plate 522 through the shaft, so that the water storage chamber 2 can be assembled.

[0066] It should also be noted that the annular float 51 is in a free state in the second water chamber 22, and there is a water passage gap C between it and the annular inner shell 2B, so that the water flows over the top surface H of the first water chamber 21 and enters the second water chamber 22.

[0067] (6) Seal and fix the water storage chamber 2 to the main body 1B of the water inlet component 1 to complete the assembly of the entire water inlet assembly.

[0068] (7) Then the entire water inlet assembly is installed on the cover body 6 of the smart cover, and the pipe with the water inlet valve 7 is connected to the water inlet of the water inlet channel 11; the drain channel 212 is connected to the water outlet of the buttock wash and feminine wash module to complete the assembly process.

[0069] In actual use:

[0070] (1) In the original state, the inlet valve 7 is closed, the water in the storage chamber 2 is full, and the annular float 51 is in a high position. At this time, the sealing plug 533 on the linkage 521 blocks the pressure discharge hole 121A, thereby causing the sealing diaphragm 531 to abut against the inlet end 111 of the inlet channel 11 and be in a sealed state.

[0071] (2) When the user turns on the switch of the posterior wash or feminine wash module, the water inlet valve 7 opens and the water in the first water chamber 21 is discharged from the drain channel 212. During the discharge of water from the first water chamber 21, the liquid level continuously drops. When it drops to the position of the buoyancy member 4, the buoyancy member 4 falls due to its own weight because it is no longer supported by the buoyancy of the water. At this time, the water stored in the second water chamber 22 flows into the first water chamber 21 as the first stage of water replenishment. During the descent, after the second water chamber 22 is discharged, the pressure-bearing member 51 (annular float 51) also loses the force of the water and moves downward, which in turn pulls the water receiving tray 522 downward. When the water receiving tray 522 rotates downward, it connects with the water receiving tray 522. The linkage 521 swings downward, causing the sealing plug 533 to disengage from the pressure relief hole 121A. After the pressure relief hole 121A is opened, the water flow in the pressure chamber 121 is discharged, and the pressure is instantly unbalanced. The water pressure at the inlet end 111 is greater than the pressure in the pressure chamber 121, which in turn pushes the sealing diaphragm 531 downward and smoothly guides the water flow into the water passage 122 of the water inlet channel 11. After flowing through the water passage 122, it is then introduced into the first water chamber 21. Since the water inlet flow rate is greater than the water outlet flow rate (this is the prior art), the water level in the first water chamber 21 continues to rise for the second stage of water replenishment, thus keeping the water in the water storage chamber 2 uninterrupted.

[0072] (3) During this process, there will be no water interruption during the posterior or feminine wash, as follows: The water level in the first water chamber 21 rises continuously and reaches the buoyancy component 4 first. Due to the buoyancy of the water, the buoyancy component 4 blocks the through hole B. At this time, the second water chamber 22 is in a waterless state and will not be closed off until the water level reaches the highest position of the first water chamber 21. Then the water flows through the first water chamber 21 and enters the second water chamber 22 through the water gap C. The water level in the second water chamber 22 also rises continuously, and the annular float 51 moves upward with the water flow, pushing the water receiving plate 522 and the linkage rod 521 upward again to block the pressure relief hole 121A.

[0073] After the pressure relief hole 121A is blocked, water flows continuously into the water passage chamber 122 and the pressure chamber 121. Since the water passage chamber 122 is connected to the outside atmosphere, water flows continuously into the pressure chamber 121 from the guide hole E of the guide rod 532. When the pressure chamber 121 is filled with water, the diaphragm is pushed to block the water inlet 111 again, so as to stop the water inlet process.

[0074] It should be noted that the height difference between the highest point of the first water chamber 21 and the position of the buoyancy member 4 is used as the starting position for the opening and closing action. This will prevent the situation where the water level drops and the water is immediately turned on for replenishment, and then the water level rises again after replenishment, and the water is turned off again, causing repeated opening and closing. Moreover, the present invention adopts a purely mechanical structure, and determines whether to replenish or turn off the water based on the water level. This method is the most reliable.

[0075] Furthermore, the outlet end 112 of the water inlet channel 11 is completely suspended in the water storage chamber 2, and the water inlet end 111 is blocked by the water sealing membrane, so that the water inlet end 111 and the outlet end 112 are doubly sealed, which makes the reliability of double anti-backflow even higher; and even the water in the pressure chamber 121 does not flow through the water inlet channel, but is introduced into the first water chamber 21 through the water receiving tray 522. With such a design, the anti-backflow and sewage source function has reached the extreme.

[0076] This invention provides a water inlet component and a smart toilet seat. Its structure is simple, easy to manufacture, readily achievable, and low-cost, solving the problem that existing water inlet components cannot simultaneously meet the requirements of preventing backflow and timely water replenishment of the storage tank. The water inlet component of this invention supplies water to the bidet and feminine wash modules. A height difference is formed between the water inlet component and the storage chamber to create a backflow prevention space, thus achieving the first layer of air barrier and preventing water from flowing back into the water inlet channel from the storage chamber. Furthermore, this invention also includes a water control structure, whose single operation performs two functions simultaneously. Changes in the water level in the two chambers (the first and second chambers) of the storage chamber block the water inlet channel, creating a second layer of barrier. This dual protection mechanism prevents water from flowing back into the water inlet channel. At the same time, it can also achieve timely water replenishment of the water storage chamber, ensuring uninterrupted water supply during posterior and feminine washes. Specifically, the first water chamber of the water storage chamber serves as the direct water source for the posterior or feminine wash function. During use, water from the first water chamber is discharged from the drain channel for the posterior or feminine wash function. When the liquid level reaches the manually set height, the pressure-bearing component in the second water chamber loses water pressure, and the linkage transmission group drives the water sealing group to open the water inlet channel for continuous water replenishment. Water flows into the first water chamber from the water inlet channel, ensuring sufficient water storage in the first water chamber and preventing water shortages. After the posterior or feminine wash is completed, the water in the first water chamber is full and flows into the second water chamber. The pressure-bearing component in the second water chamber is subjected to water pressure, and the linkage transmission group and the water sealing group close the water inlet channel again to stop the water supply.

[0077] This invention achieves two core functions simultaneously with a single mechanical structure. Its structure is simple and highly interconnected. Compared to electronic control methods, it offers superior stability. For example, water replenishment via a level sensor for monitoring the liquid level suffers from several drawbacks: firstly, components are unreliable and prone to damage; secondly, the power supply and control system are cumbersome; and thirdly, it is prone to repeated opening and closing. For instance, water replenishment often begins when the level is slightly below the set level, and as soon as the inlet valve opens, the replenished water immediately surpasses the set level, causing the solenoid valve to close again. This repeated rapid opening and closing not only affects the lifespan but also results in noise from the solenoid valve, negatively impacting the user experience. Fourthly, in the event of a power outage or sensor malfunction, continuous or no water supply is highly likely, leading to poor safety and reliability. In contrast, this invention uses a purely mechanical mechanism, employing changes in water level as the switching signal. It completely eliminates the need to consider power supply issues, resulting in high reliability, long lifespan, and reduced susceptibility to damage and failure. Furthermore, its low cost and ingenious dual-function linkage design are remarkable.

[0078] The description of the above specification and embodiments is used to explain the scope of protection of the present invention, but does not constitute a limitation on the scope of protection of the present invention.

Claims

1. A water inlet assembly for a smart toilet, characterized in that: The water inlet assembly includes: The water inlet component has a water inlet channel; A water storage chamber is disposed below the water inlet, and a backflow prevention space is formed between the water storage chamber and the water inlet to isolate the water outlet of the water inlet channel from the water storage chamber; the water storage chamber is provided with a first water chamber and a second water chamber that are interconnected, and a buoyancy component is installed between the first and second water chambers; the first water chamber has a drainage channel. The water control structure includes a pressure-bearing component, a transmission assembly, and a water-sealing assembly. The pressure-bearing component is located in the second water chamber and is driven by the water force to move along the axial direction of the water storage chamber. One end of the transmission assembly is connected to the pressure-bearing component, and the other end acts on the water-sealing assembly to drive the water-sealing assembly to move synchronously. The water-sealing assembly is located in the water inlet component and opens and closes the water inlet channel with the action of the transmission assembly. The water flowing into the first water chamber through the inlet channel enters the second water chamber after passing over the top surface of the first water chamber. The water flow acts on the pressure-bearing component to move upward, which in turn drives the transmission group to move and pushes the sealing water group to displace, thereby blocking the inlet channel and forming an anti-backflow structure.

2. The water inlet assembly for a smart toilet as described in claim 1, characterized in that: The first water chamber has a convex cross-section and an opening in the middle. The opening corresponds to the outlet of the water inlet channel, and the diameter of the opening is larger than the outer diameter of the outlet of the water inlet channel.

3. The water inlet assembly for a smart toilet as described in claim 2, characterized in that: The second water chamber is located on the outer periphery of the protruding portion of the first water chamber and is arranged in a ring shape; the pressure-bearing member is configured as an annular float, which is installed in the second water chamber; a through hole is opened between the first water chamber and the second water chamber, corresponding to the position of the annular float, so that the first water chamber and the second water chamber are connected; wherein, the buoyancy member is installed at the through hole and is used to open and close the through hole.

4. The water inlet assembly for a smart toilet as described in claim 3, characterized in that: A water passage gap is formed between the annular float and the first water chamber; wherein, after the buoyancy component is lifted by water pressure and blocks the through hole, the water flows over the top surface of the protruding part of the first water chamber and enters the water passage gap until the second water chamber, and pushes the annular float to move.

5. The water inlet assembly for a smart toilet as described in claim 4, characterized in that: The buoyancy component includes a hook portion and a pressure-receiving portion integrated together. The pressure-receiving portion is located in the first water chamber; the hook portion is located in the second water chamber, and the length of the hook portion is greater than the thickness of the shell forming the second water chamber, so that the pressure-receiving portion is pushed upward by water pressure to block the through hole or falls due to its own weight to open the through hole when pressure is lost.

6. A water inlet assembly for a smart toilet as described in any one of claims 1-5, characterized in that: The water sealing assembly is located within a cavity formed inside the water inlet component, and this cavity connects the inlet and outlet ends of the water inlet channel. The water sealing assembly includes a water sealing diaphragm, a guide rod, and a sealing plug. The water sealing diaphragm is movably fitted onto the guide rod located within the cavity and is used to open or close the inlet end. The water sealing diaphragm divides the cavity into a pressure chamber and a water passage chamber, and a flow guide hole is provided on the water sealing diaphragm or the guide rod to allow water to enter the pressure chamber. The pressure chamber is provided with a pressure discharge hole, which is blocked or opened by the sealing plug installed on the transmission assembly to change the pressure in the pressure chamber, thereby causing the water sealing diaphragm to close or open the inlet end.

7. A water inlet assembly for a smart toilet as described in claim 6, characterized in that: The transmission assembly includes a linkage component, one end of which is hinged to the bottom of the water inlet component and rotates about the hinge shaft to cover the pressure relief hole; the linkage component directly or indirectly cooperates with the pressure-bearing component in the second water chamber so that the pressure-bearing component drives the linkage component to block or open the pressure relief hole.

8. A water inlet assembly for a smart toilet as described in claim 7, characterized in that: The transmission assembly also includes a bridging component, the two ends of which are respectively hinged to the other end of the linkage component and the water inlet component. The pressure bearing component is eccentrically hinged to the bottom of the bridging component and close to the hinge position with the linkage component.

9. A water inlet assembly for a smart toilet as described in claim 8, characterized in that: The bridging component is configured as a water receiving tray with a guide groove for receiving water flowing out of the pressure relief hole and guiding it into the first water chamber of the water storage chamber.

10. A water inlet assembly for a smart toilet as described in claim 6, characterized in that: The sealing plug is installed on the linkage component and moves with the linkage component to open and close the pressure relief hole accordingly.

11. A smart toilet seat, installed in a toilet bowl; the smart toilet seat includes a seat body, a water inlet valve, a control board, a bidet water outlet, and a feminine wash water outlet; characterized in that: It also includes a water inlet assembly as described in any one of claims 1 to 10, wherein the water inlet assembly is installed on the cover plate body via an installation structure, and the water inlet end of the water inlet component of the water inlet assembly is connected to a water inlet valve; the water outlet end of the drainage channel is directly or indirectly connected to the posterior wash water outlet and the feminine wash water outlet.

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