Seat assembly and toilet

Abstract

A seat assembly includes a seat including at least one seat lug disposed at a rear end of the seat. The seat assembly further includes a waterway control mechanism disposed on a side of the at least one seat lug. The waterway control mechanism includes a mechanism body pivotably connected to the at least one seat lug and comprising a pressure relief hole; a cover connected to the mechanism body and comprising a water inlet pipe and a water outlet pipe; a sealing valve disposed in the cover and comprising a water flowing hole; and a swinging arm pivotably disposed between the mechanism body and the at least one seat lug and configured to be driven by a rotation of the at least one seat lug so as to swing.

Description

CROSS REFERENCE TO RELATED APPLICATION

[0001] This application claims the benefit of priority to: Chinese Patent Application No. 202422293691.0 filed in the Chinese Intellectual Property Office on Sep. 19, 2024, which is hereby incorporated by reference in its entirety.FIELD The present disclosure relates to the technical field of sanitary products and particularly relates to a seat assembly and a toilet.BACKGROUND

[0002] Intelligent toilets are becoming more and more popular, and the intelligent toilets are equipped with pre-flushing nozzles and front and rear flushing nozzles. The front and rear flushing nozzles are used for cleaning private parts of the human body, and the pre-flushing nozzles are used for adding a small amount of water to a rear side wall surface of the toilet bowl to pre-wet the wall surface of the toilet bowl in order to reduce the adhesion of dirt to the wall surface. When the toilet is flushed, the dirt may be removed from the wall surface to improve the cleanliness of the toilet.

[0003] In order to control the discharge of water from the pre-flushing nozzle, a manual mechanical switch or an electromagnetic control switch is used to control the opening and closing of the waterway of the pre-flushing nozzle. The manual mechanical switches require users to operate the handle by hand, resulting in a poor user experience. The electromagnetic control switches also require users to operate the control panel or buttons, resulting in a poor user experience. In addition, the cost of electromagnetic control switches is high, and electronic products are easy to rust in humid environments, resulting in a high probability of failure.SUMMARY

[0004] The present disclosure aims to overcome the foregoing shortcomings and provide a seat assembly and a toilet. When the seat rotates, the switching on and off of the waterway control mechanism will be controlled accordingly, and thus the water supply to the pre-flushing nozzle may be initiated or terminated. The user no longer needs to switch on or off the waterway control mechanism by hand. Thus, the user experience may be improved. It adopts a purely mechanical structure and has a long service life.

[0005] According to an embodiment of the present disclosure, a seat assembly includes a seat and a waterway control mechanism.

[0006] A rear end of the seat is provided with at least one seat lug, and the waterway control mechanism is mounted on a side of the at least one seat lug.

[0007] The waterway control mechanism includes a mechanism body pivotably connected to the seat lug and having a pressure relief hole. The waterway control mechanism further includes a cover connected to a side of the mechanism body and having a water inlet pipe and a water outlet pipe. The waterway control mechanism further includes a sealing valve disposed in the cover and having a water flowing hole. The waterway control mechanism further includes a swinging arm pivotably disposed between the mechanism body and the seat lug and configured to bedriven to swing by a rotation of the seat lug.

[0008] The pressure relief hole and a water inlet of the cover are disposed on opposite sides of the sealing valve. One end of the swinging arm is provided with a plug cap, the plug cap is configured to open or close the pressure relief hole when the swinging arm swings. The sealing valve is configured to fluidly connect or disconnect a waterway between the water inlet pipe and the water outlet pipe in response to opening or closing of the pressure relief hole.

[0009] In an embodiment, an elastic element is connected between the other end of the swinging arm and the mechanism body.

[0010] When the elastic element is in an initial state, the plug cap closes the pressure relief hole.

[0011] In an embodiment, a side of the seat lug facing the mechanism body is provided with a first guiding structure. The other end of the swinging arm is provided with a second guiding structure configured to slidably cooperate with the first guiding structure.

[0012] The first guiding structure and / or the second guiding structure are in a circular arc shape.

[0013] In an embodiment, the first guiding structure includes an arc-shaped guiding groove. The guiding groove includes at least one deep groove section and a shallow groove section.

[0014] The second guiding structure includes a guiding element extending toward the guiding groove. The guiding element is in clearance fit with (e.g., engaged with) the guiding groove.

[0015] The plug cap closes the pressure relief hole when the guiding element is disposed in the at least one deep groove section. The plug cap opens the pressure relief hole when the guiding element is disposed in the shallow groove section.

[0016] In an embodiment, the at least one deep groove section includes a first deep groove section and a second deep groove section. The shallow groove section is disposed between the first deep groove section and the second deep groove.

[0017] The seat is disposed in a closed state when the guiding element is disposed in the first deep groove section. The seat is in a fully opened state when the guiding element is disposed in the second deep groove section.

[0018] In an embodiment, the mechanism body is provided with a guiding column extending toward the cover. The sealing valve is slidably assembled onto the guiding column.

[0019] In an embodiment, an edge of the water inlet of the cover is provided with a circle of sealing flange. When the pressure relief hole is disposed in an opened state, the sealing valve is tightly attached to the sealing flange.

[0020] In an embodiment, a side of the mechanism body is provided with two mounting lugs arranged at a vertical interval (e.g., vertically spaced apart from each other). The swinging arm is mounted between the two mounting lugs through a pivot shaft.

[0021] In an embodiment, the pivot shaft is located at an end close to the plug cap.

[0022] According to another embodiment of the present disclosure, a toilet includes a toilet body, a mounting base, a pre-flushing nozzle, and a seat assembly according to any of the above embodiments.

[0023] The mounting base is mounted at a rear end portion of the toilet body. The seat is pivotably connected to the mounting base. The water inlet pipe is connected to a water supply pipeline. The pre-flushing nozzle is connected to the water outlet pipe. The pre-flushing nozzle is directed toward a toilet bowl of the toilet body.

[0024] By adopting the above technical solutions, the present disclosure has the following beneficial effects.

[0025] The seat assembly and the toilet according to the present disclosure include a seat and a waterway control mechanism. When the seat is in a certain state, for example, when the seat is in a closed state and / or fully opened state, the swinging arm is in an initial state, the plug cap blocks the pressure relief hole, and the sealing valve is attached to a wall surface surrounding a water inlet of the cover. Thus, the waterway between the water inlet pipe and the water outlet pipe may be disconnected, and the pre-flushing nozzle does not discharge water. When the seat is in another state, for example, when the seat is rotated and switched from the closed state to the fully opened state, or when the seat is rotated and switched from the fully opened state to the closed state, the swinging arm is driven to swing through a certain angle, the plug cap opens the pressure relief hole, the sealing valve leaves from the wall surface around the water inlet of the cover. Thus, the waterway between the water inlet pipe and the water outlet pipe is fluidly connected, and the pre-flushing nozzle starts discharging water to wet the rear side wall surface of the toilet bowl.

[0026] To sum up, the seat assembly and the toilet according to the present disclosure can control the switching on and off of the waterway control mechanism accordingly when the seat rotates so as to provide water supply or stop the water supply to the pre-flushing nozzle. The user no longer needs to switch on or off the waterway control mechanism by hand. Thus, the user experience may be improved. It adopts a purely mechanical structure and has a long service life.BRIEF DESCRIPTION OF THE FIGURES

[0027] By reference to the drawings, the contents disclosed by the present disclosure should be more easily understood. It should be understood that these drawings are merely used for illustration and are not intended to limit the protection scope of the present disclosure. In the drawings:

[0028] FIG. 1 is a perspective view of a seat assembly according to an embodiment of the present disclosure;

[0029] FIG. 2 is an enlarged schematic diagram of the connection between a waterway control mechanism and a seat lug;

[0030] FIG. 3 is a schematic diagram of an inner side of the seat lug with a first guiding structure;

[0031] FIG. 4 is a sectional view of FIG. 1 along the A-A direction;

[0032] FIG. 5 is a sectional view of FIG. 2 along the B-B direction;

[0033] FIG. 6 is a perspective view of the waterway control mechanism from a view angle;

[0034] FIG. 7 is a perspective view of the waterway control mechanism from another view angle;

[0035] FIG. 8 is an exploded view of the waterway control mechanism from a view angle;

[0036] FIG. 9 is an exploded view of the waterway control mechanism from another view angle;

[0037] FIG. 10 is a sectional view of a sealing valve assembled between a connection base of the mechanism body and a cover;

[0038] FIG. 11 a sectional view of the cover;

[0039] FIG. 12 is a perspective view of a toilet according to an embodiment of the present disclosure;

[0040] FIG. 13 is a schematic diagram of a front / rear flushing nozzle and a pre-flushing nozzle arranged on a rear end portion of a toilet body; and

[0041] FIG. 14 is a flow chart of a method for controlling a pre-flushing nozzle of a toilet to spray water according to an embodiment of the present disclosure.DETAILED DESCRIPTION

[0042] The specific embodiments of the present disclosure are further described with reference to the drawings hereinafter. Same or equivalent parts are denoted by the same reference numerals. It should be noted that the terms “front”, “rear”, “left”, “right”, “up” and “down” used in the present disclosure refer to the directions in the drawings, and the terms “inner” and “outer” refer to the directions toward or away from geometric centers of specific parts, respectively.

[0043] As shown in FIGS. 1-10, a seat assembly according to an embodiment of the present disclosure comprises a seat 1 and a waterway control mechanism 2.

[0044] A rear end of the seat 1 is provided with two seat lugs 11, and the waterway control mechanism 2 is mounted on a side of one of the seat lugs 11.

[0045] The waterway control mechanism 2 comprises a mechanism body 21 pivotably connected to the seat lug 11 and having a pressure relief hole 213. The waterway control mechanism 2 further comprises a cover 22 connected to a side of the mechanism body 21 and having a water inlet pipe 222 and a water outlet pipe 223. The waterway control mechanism 2 further comprises a sealing valve 23 disposed in the cover 22 and having a water flowing hole 231. The waterway control mechanism 2 further comprises a swinging arm 24 pivotably provided between the mechanism body 21 and the seat lug 11 and configured to be driven by the seat lug 11 so as to swing.

[0046] The pressure relief hole 213 and a water inlet 221a of the cover 22 are on opposite sides of the sealing valve 23. One end (e.g., a first end) of the swinging arm 24 is provided with a plug cap 25, and the plug cap 25 is configured to open or close the pressure relief hole 213 when the swinging arm 24 swings. The sealing valve 23 is configured to fluidly connect or disconnect a waterway between the water inlet pipe 222 and the water outlet pipe 223 in response to opening and closing of the pressure relief hole 213.

[0047] The seat assembly according to the present disclosure comprises the seat 1 and the waterway control mechanism 2. The left and right sides of the rear end of the seat 1 are respectively provided with one seat lug 11. The seat lug 11 is provided with a through hole 111 for assembling with a shaft on a mounting base or other components. The seat 1 may rotate around the shaft to realize opening and closing. The seat 1 in a closed state according to the present disclosure means that the seat 1 is disposed on the toilet body 3 as illustrated in FIGS. 12 and 13. The seat 1 in a fully opened state according to the present disclosure means that the seat 1 is flipped from the toilet body 3, and an opening angle is greater than 90°. The process in which the seat 1 is switched from the closed state to the fully opened state is an opening / closing process in which the seat 1 is manually operated or electrically operated. The process in which the seat 1 is switched from the fully opened state to the closed state is a closing process in which the seat 1 is manually operated or electrically operated. The default state of the seat 1 may be the closed state or the fully opened state.

[0048] The waterway control mechanism 2 is configured to control a pre-flushing nozzle 6 shown in FIG. 13 to spray a small amount of water onto the toilet bowl 31, so as to wet the rear side wall surface of the toilet bowl 31 and reduce the adhesion of dirt.

[0049] In the present disclosure, the waterway control mechanism 2 may be a mechanical structure, which is connected to the seat 1, and automatically opens or closes the waterway of the pre-flushing nozzle 6 in response to the rotation of the seat 1.

[0050] The waterway control mechanism 2 is mounted on a side of one of the seat lugs 11. In an embodiment, the waterway control mechanism 2 is mounted on an inner side of one of the seat lugs 11.

[0051] The waterway control mechanism 2 comprises the mechanism body 21, the cover 22, the sealing valve 23, the swinging arm 24, the plug cap 25, and the like.

[0052] The mechanism body 21 may be a plate-like structure or a block-like structure, and the area where the mechanism body 21 is assembled with the cover 22 is provided with the pressure relief hole 213. An outer side of the mechanism body 21 is provided with a mounting shaft 211 for assembling into a through hole 111 of the seat lug 11, and the seat lug 11 is rotatable with respect to the mounting shaft 211. In an embodiment, the area where the mechanism body 21 is assembled with the cover 22 is provided with a connection base 212, and the pressure relief hole 213 penetrates the connection base 212. The connection base 212 is configured to be connected to the opening of the cover 22.

[0053] The cover 22 is in a box-shaped or hemispherical shape and has a cavity 221, and the water inlet of the cavity 221 is also the water inlet 221a of the cover 22. A water inlet 221a is connected to the water inlet pipe 222 and is configured to be connected to a water supply pipeline 7 of the toilet. Specifically, the water inlet pipe 222 may be connected to the water supply pipeline 7 through a hose. In an embodiment, the water inlet pipe 222 is perpendicular to the seat lug 11 and is in an intermediate position of the cover 22. A side of the cover 22 is also provided with the water outlet pipe 223 configured to be connected to the pre-flushing nozzle 6 so as to supply water to the pre-flushing nozzle 6. Specifically, the water outlet pipe 223 may be connected to the pre-flushing nozzle 6 through a hose.

[0054] The sealing valve 23 is a diaphragm valve, which is assembled in the cavity 221. The peripheral edge of the sealing valve 23 is connected to the wall surface of the cavity 221 in a sealing manner. A side of the sealing valve 23 facing the water inlet 221a is configured to be in contact with the wall surface around the water inlet 221a in a sealing manner. Thus, the cavity 221 may be divided into a chamber in which the water inlet 221a is located, a first chamber 221b, and a second chamber 221c. The first chamber 221b is a portion between the peripheral edge of the sealing valve 23 and the wall surface around the water inlet 221a. The second chamber 221c is a portion between the sealing valve 23 and the connection base 212, and the pressure relief hole 213 is in communication with (e.g., in fluid communication with) the second chamber 221c.

[0055] The water outlet of the cover 22 is disposed in the first chamber 221b, and the water outlet pipe 223 is connected to the water outlet of the cover 22. Therefore, when a side of the sealing valve 23 facing the water inlet 221a is in contact with the wall surface surrounding the water inlet 221a in a sealing manner, the first chamber 221b is disconnected from the water inlet 221a, the waterway between the water inlet pipe 222 and the water outlet pipe 223 is disconnected, and thus no water is discharged from the water outlet pipe 223. Thus, the pre-flushing nozzle 6 does not spray water. When the side of the sealing valve 23 facing the water inlet 221a is separated from the wall surface surrounding the water inlet 221a, the first chamber 221b is in communication with the water inlet 221a, the waterway between the water inlet pipe 222 and the water outlet pipe 223 is opened, the water outlet pipe 223 drains water, and the pre-flushing nozzle 6 performs a water spraying operation.

[0056] The sealing valve 23 is provided with a water flowing hole 231 that fluidly connects the water inlet 221a to the second chamber 221c. When the water pressure in the first chamber 221b and the second chamber 221c is equal, because the area of the sealing valve 23 facing the second chamber 221c is larger than the area of the sealing valve 23 facing the water inlet 221a, the sealing valve 23 is deformed toward the water inlet 221a. Thus, the sealing valve 23 comes into contact with the wall surface around the water inlet 221a in a sealing manner, and the first chamber 221b is disconnected from the water inlet 221a. When the water in the second chamber 221c is discharged, the pressure decreases, and the sealing valve 23 is deformed toward the second chamber 221c so as to leave from the wall surface around the water inlet 221a. Thus, the first chamber 221b is in communication with the water inlet 221a.

[0057] The swinging arm 24 is pivotably connected to the mechanism body 21, and the swinging arm 24 is assembled between the mechanism body 21 and the seat lug 11, which may swing back and forth by a certain angle between the mechanism body 21 and the seat lug 11. The swing direction is from the mechanism body 21 side to the seat lug 11 side and from the seat lug 11 side to the mechanism body 21 side. The swinging arm 24 is connected to the seat lug 11 through a linkage structure, and the swinging arm 24 may be driven by a rotation of the seat lug 11 to swing. The linkage structure may adopt two concave-convex fitting tooth blocks, and the two tooth blocks are respectively mounted on the seat lug 11 and the swinging arm 24. When the concave and convex parts of the two tooth blocks are engaged, the swinging arm 24 is kept in the initial state, and when the convex parts of the two tooth blocks are against each other, the swinging arm 24 is in the swinging state. In an embodiment, a combination of a guiding groove having a concave-convex surface and a guiding column may be adopted as the linkage structure. The guiding groove and the guiding column are disposed on the seat lug 11 and the swinging arm 24 respectively, and the guiding column and the guiding groove are slidably connected without disengagement. For example, a T-shaped structure may be adopted. When the end portion of the guiding column is located in the concave region of the guiding groove, the swinging arm 24 remains in the initial state. When the end portion of the guiding column is located in the convex region of the guiding groove, the swinging arm 24 is in the swinging state.

[0058] The plug cap 25 may be a rubber plug disposed at one end of the swinging arm 24 and facing the pressure relief hole 213. When the swinging arm 24 is in the initial state, the plug cap 25 blocks the pressure relief hole 213. Thus, water begins to accumulate in the second chamber 221c until the water pressure in the second chamber 221c is equal to the water pressure in the water inlet 221a, and the sealing valve 23 is deformed toward the water inlet 221a. Thus, the sealing valve 23 comes into contact with the wall surface surrounding the water inlet 221a in a sealing manner, and the first chamber 221b is disconnected from the water inlet 221a. When the swinging arm 24 is in the swinging state, the plug cap 25 leaves from the pressure relief hole 213. Thus, the water discharge starts in the second chamber 221c, and the water pressure in the second chamber 221c is less than the water pressure in the water inlet 221a, so that the sealing valve 23 is deformed toward the second chamber 221c. Thus, the sealing valve 23 is separated from the wall surface surrounding the water inlet 221a, and the first chamber 221b is in communication with the water inlet 221a.

[0059] Based on the above descriptions, the seat assembly according to the present disclosure may realize the following technical effects:

[0060] When the seat 1 is in a certain state, for example, when the seat 1 is in a closed state and / or a fully opened state, the swinging arm 24 is in an initial state, the plug cap 25 blocks the pressure relief hole 213, and the sealing valve 23 is attached to a wall surface surrounding a water inlet 221a of the cover 22. Thus, the waterway between the water inlet pipe 222 and the water outlet pipe 223 is disconnected, and the pre-flushing nozzle 6 does not discharge water. When the seat 1 is in another state, for example, when the seat 1 is rotated and switched from the closed state to the fully opened state, or when the seat 1 is rotated and switched from the fully opened state to the closed state, the swinging arm 24 is driven to swing by a certain angle, the plug cap 25 opens the pressure relief hole 213, and the sealing valve 23 leaves from the wall surface around the water inlet 211a of the cover 22. Thus, the waterway between the water inlet pipe 222 and the water outlet pipe 223 is fluidly connected, and the pre-flushing nozzle 6 starts to discharge water to wet the rear side wall surface of the toilet bowl 31.

[0061] To sum up, the seat assembly according to the present disclosure can switch on and off the waterway control mechanism 2 accordingly when the seat 1 rotates, thereby initiating or terminating the water supply to the pre-flushing nozzle 6. The user no longer needs to switch on and off the waterway control mechanism 2 by hand. This improves the user experience. It adopts a mechanical structure and has a long service life.

[0062] In an embodiment, as shown in FIGS. 4-9, an elastic element 26 is connected between the other end (e.g., a second end) of the swinging arm 24 and the mechanism body 21. When the elastic element 26 is in an initial state, the plug cap 25 closes the pressure relief hole 213.

[0063] In this embodiment, the elastic element 26 is disposed at the end (e.g., the second end) of the swinging arm 24 away from the plug cap 25, and the elastic element 26 may be a spring, an elastic piece, or the like. An elastic element 26 is connected to the mechanism body 21 for supporting the other end of the swinging arm 24. When the swinging arm 24 is in the initial state, the elastic element 26 is also in the initial state for applying a force toward the seat lug 11 to the other end of the swinging arm 24. Thus, one end of the swinging arm 24 with a plug cap 25 is close to or tightly attached to the connection base 212, and the plug cap 25 blocks the pressure relief hole 213.

[0064] In an embodiment, as shown in FIGS. 4-9, a side, facing the mechanism body 21, of the seat lug 11 is provided with a first guiding structure 112. The other end (e.g., the second end) of the swinging arm 24 is provided with a second guiding structure 27 that slidably cooperates with the first guiding structure 112. The first guiding structure 112 and / or the second guiding structure 27 are in a circular arc shape.

[0065] In this embodiment, the first guiding structure 112 and the second guiding structure 27 are configured in order to guide the cooperation between the swinging arm 24 and the seat lug 11. In an embodiment, the first guiding structure 112 may be an arc-shaped guiding groove, and the second guiding structure 27 is a guiding element, for example, a guiding column, a guiding pin, or the like. In another embodiment, the first guiding structure 112 is a guiding element, for example, a guiding column, a guiding pin, or the like. The second guiding structure 27 may be an arc-shaped guiding groove. The central angle, the length, and the like of the guiding groove are set according to the parameters of rotational opening and closing of the seat 1.

[0066] The cooperation between the second guiding structure 27 and the first guiding structure 112 may realize that the second guiding structure 27 maintains the first guiding structure 112 during the rotation of the seat lug 11, and the stability of the assembly between the two may be improved.

[0067] In an embodiment, as shown in FIGS. 4-9, the first guiding structure 112 comprises a guiding groove 1121 in a circular arc shape, and the guiding groove 1121 comprises a deep groove section 1121a and a shallow groove section 1121b.

[0068] The second guiding structure 27 comprises a guiding element 271 extending toward the guiding groove 1121, and the guiding element 271 is in clearance fit with (e.g., engaged with) the guiding groove 1121.

[0069] The plug cap 25 closes the pressure relief hole 213 when the guiding element 271 is disposed in the deep groove section 1121a. The plug cap 25 opens the pressure relief hole 213 when the guiding element 271 is disposed in the shallow groove section 1121b.

[0070] In the present embodiment, the aforementioned linkage structure is integrated in the first guiding structure 112 and the second guiding structure 27. Specifically, the first guiding structure 112 comprises the arc-shaped guiding groove 1121, and the length, the central angle, and the like of the guiding groove 1121 are set according to the parameters of rotational opening and closing of the seat 1. The guiding groove 1121 comprises the deep groove section 1121a and the shallow groove section 1121b, which are the aforementioned concave-convex surface. The length of the deep groove section 1121a and the shallow groove section 1121b is determined according to the stage at which the product needs to open and close the pre-flushing nozzle 6.

[0071] The second guiding structure 27 comprises the guiding element 271, such as a guiding column, a guiding pin. The guiding element 271 is disposed on the outer side the other end of the swinging arm 24. The guiding element 271 extends toward the guiding groove 1121 and is in clearance fit with (e.g., engaged with) the guiding groove 1121.

[0072] When the guiding element 271 is in the deep groove section 1121a, the swinging arm 24 is in the initial state and the plug cap 25 closes the pressure relief hole 213. When the guiding element 271 is in the shallow groove section 1121b, the swinging arm 24 is in the swinging state, and the plug cap 25 opens the pressure relief hole 213.

[0073] In an embodiment, as shown in FIGS. 3 and 5, the guiding groove 1121 comprises two deep groove sections 1121a (a first deep groove section and a second deep groove section) and one shallow groove section 1121b, and the shallow groove section 1121b is disposed between the two deep groove sections 1121a.

[0074] The seat 1 is disposed in a closed state when the guiding element 271 is in one of the two deep groove sections 1121a (e.g., the first deep groove section). The seat 1 is disposed in a fully opened state when the guiding element 271 is in the other one of the deep groove sections 1121a (e.g., the second deep groove section).

[0075] In this embodiment, the guiding groove 1121 comprises two deep groove sections 1121a and one shallow groove section 1121b, and the two deep groove sections 1121a are connected to two ends of the shallow groove section 1121b.

[0076] Accordingly, it may realize that when the seat 1 is in the closed state and when the seat 1 is in the fully opened state, the swinging arm 24 is in the initial state, the plug cap 25 closes the pressure relief hole 213, and the pre-flushing nozzle 6 does not spray water. During the flipping of the seat 1 to be opened or closed (indicating that the user is about to use the toilet or has finished using the toilet), the swinging arm 24 is in the swinging state, the plug cap 25 opens the pressure relief hole 213, and the pre-flushing nozzle 6 performs water spraying operation.

[0077] In an embodiment, as shown in FIGS. 5 and 8-10, the mechanism body 21 is provided with a guiding column 214 extending toward the cover 22. The sealing valve 23 is slidably assembled on the guiding column 214, and thus the movement and deformation of the sealing valve 23 are guided.

[0078] In an embodiment, the guiding column 214 passes through the water flowing hole 231, the hole diameter of the water flowing hole 231 is larger than the column diameter of the guiding column 214, and there is a certain gap for water flow, which may not only prevent excessive water flow, but also realize the assembly with the guiding column 214. This simplifies the structure.

[0079] In an embodiment, as shown in FIGS. 10 and 11, an edge of a water inlet 221a of the cover 22 is peripherally provided with a sealing flange 224. When the pressure relief hole 213 is in an opened state, the sealing valve 23 is tightly attached to the sealing flange 224. This improves the sealing effect between the end surface of the sealing valve 23 and the wall surface surrounding the water inlet 221a, so as to disconnect the waterway between the water inlet pipe 222 and the water outlet pipe 223 in a better manner.

[0080] In an embodiment, as shown in FIGS. 7 and 9, a side of the mechanism body 21 is provided with two mounting lugs 215 arranged at a vertical interval (e.g., vertically spaced apart from each other), and the swinging arm 24 is mounted between the two mounting lugs 215 through a pivot shaft 28.

[0081] In this embodiment, the swinging arm 24 is assembled between the upper and lower mounting lugs 215 with clearance. This may prevent the swinging arm 24 from swaying up and down or displacing and improve the assembly stability. Through holes are disposed in the mounting lugs 215 for the pivot shaft 28 to pass through and connect.

[0082] In an embodiment, as shown in FIGS. 7 and 9, the pivot shaft 28 is disposed at an end proximate to the plug cap 25. This may provide greater force to the end at which the plug cap 25 is located and thus may block the pressure relief hole 213.

[0083] As shown in FIGS. 12 and 13, an embodiment of the present disclosure provides a toilet comprising a toilet body 3, a mounting base 4, a pre-flushing nozzle 6, and a seat assembly according to any one of the above embodiments.

[0084] The mounting base 4 is mounted at a rear end portion of the toilet body 3. The seat 1 is pivotably connected to the mounting base 4. The water inlet pipe 222 is connected to a water supply pipeline 7. The pre-flushing nozzle 6 is connected to the water outlet pipe 223. The pre-flushing nozzle 6 is directed toward a toilet bowl 31 of the toilet body 3.

[0085] The toilet according to the present disclosure comprises the toilet body 3, the mounting base 4, the pre-flushing nozzle 6, the seat assembly, and the like.

[0086] The descriptions of the structure, construction, and working principle of the seat have been omitted, and the foregoing descriptions of the seat assembly are incorporated herein.

[0087] The toilet body 3 is a ceramic body and has a toilet bowl 31. The mounting base 4 is mounted at the rear end of the toilet body 3 and is configured to mount the seat 1 and the toilet cover. The mounting base 4 is configured to mount a waterway structure, an electronic device, a front / rear flushing nozzle 5, the pre-flushing nozzle 6, and the like. The mechanism body 21 is fixed in the cavity body of the mounting base 4.

[0088] The water inlet pipe 222 is connected to the water supply pipeline 7 through a hose. The front / rear flushing nozzle 5 is connected to the water supply pipeline 7 through a hose. The pre-flushing nozzle 6 is connected to the water outlet pipe 223 through a hose. The pre-flushing nozzle 6 is directed toward the toilet bowl 31 of the toilet body 3 and configured to spray water to the rear side wall surface of the toilet bowl 31 so as to wet the wall surface and reduce the adhesion of dirt.

[0089] In an embodiment, the toilet includes a base (e.g., a pedestal, bowl, etc.) and a tank. The base is configured to be attached to another object such as a drainpipe, floor, or another suitable object. The base includes a bowl, a sump (e.g., a receptacle) disposed below the bowl, and a trapway fluidly connecting the bowl to a drainpipe or sewage line. The tank may be supported by the base, such as an upper surface of a rim. The tank may be integrally formed with the base as a single unitary body. In other embodiments, the tank may be formed separately from the base and coupled (e.g., attached, secured, fastened, connected, etc.) to the base. The toilet may further include a tank lid covering an opening and inner cavity in the tank. The toilet may include a seat assembly including a seat and a seat cover rotatably coupled to the base. The toilet may further include a hinge assembly.

[0090] In another embodiment, the toilet may be a tankless toilet. The toilet includes a base and a seat assembly coupled to the base. The base includes a bowl, a sump disposed below the bowl, and a trapway fluidly connecting the bowl to a drainpipe or sewage line. The toilet includes a waterline that supplies the toilet with water. The toilet may further include a seat assembly including a seat and a seat cover rotatably coupled to the base. The toilets described above are provided herein as non-limiting examples of toilets that may be configured to utilize aspects of the present disclosure.

[0091] In some examples, a bidet may be included in a seat or pedestal of a toilet. In other examples, the bidet may be manufactured separately from and attached or coupled to a seat or pedestal of a toilet. The bidet includes a housing. The housing is configured to receive a flow of water through a housing inlet and dispense the flow of water from a housing outlet. The housing inlet and housing outlet may be located on opposite ends of the housing from one another, such that water may flow through the housing from the housing inlet to the housing outlet. In some examples, the housing further includes a chamber. As the housing receives the flow of water, the chamber may fill with water and provide a flow of water between the housing inlet and the housing outlet. The chamber may be configured to contain the flow of water and direct the flow of water from the housing inlet to the housing outlet. After the chamber has filled with water, the flow of water may travel along a substantially linear path between the housing inlet and the housing outlet. In some examples, one or more walls within the housing may be included to help direct a flow of water between the housing inlet and the housing outlet. The bidet may further include a housing inlet conduit configured to direct a flow of water to the housing inlet. The housing inlet conduit may be coupled to a water supply such as tank or waterline. The housing may further include a gear assembly or a portion of the gear assembly.

[0092] An embodiment of the present disclosure further provides a method for controlling a pre-flushing nozzle of a toilet to spray water. FIG. 14 is a flow chart of a method for controlling a pre-flushing nozzle of a toilet to spray water according to an embodiment of the present disclosure. Here, the pre-flushing nozzle of the toilet in the method are the pre-flushing nozzle of the toilet according to any of the embodiments of the present disclosure. The descriptions regarding the pre-flushing nozzle and the toilet as described in the present disclosure are incorporated herein. The pre-flushing nozzle and the toilet are configured to perform an operation, function, or the like as described in the present disclosure.

[0093] At act S101, at least one seat lug 11 disposed at the rear end of the seat 1 is rotated by flipping the seat 1 of the toilet with respect to the toilet body 3.

[0094] Specifically, as described above, the left and right sides of the rear end of the seat 1 are respectively provided with one seat lug 11. The seat lug 11 is provided with a through hole 111 for assembling with a shaft on a mounting base or other components. The seat 1 may rotate around the shaft to realize opening and closing.

[0095] At act S102, in response to the rotation of the at least one seat lug 1, the state of the swinging arm 24 is changed from the initial state to the swinging state.

[0096] Specifically, as described above, the swinging arm 24 is pivotably connected to the mechanism body 21, and the swinging arm 24 is assembled between the mechanism body 21 and the seat lug 11, which may swing back and forth by a certain angle between the mechanism body 21 and the seat lug 11. The swing direction is from the mechanism body 21 side to the seat lug 11 side and from the seat lug 11 side to the mechanism body 21 side. The swinging arm 24 is connected to the seat lug 11 through a linkage structure, and the swinging arm 24 may be driven by a rotation of the seat lug 11 to swing.

[0097] At act S103, in response to the swinging state of the swinging arm 24, the pre-flushing nozzle 6 is allowed to spray the water by connecting the waterway between the water inlet pipe 222 and the water outlet pipe 223.

[0098] Specifically, as described above, during the flipping of the seat 1 to be opened or closed (indicating that the user is about to use the toilet or has finished using the toilet), the swinging arm 24 is in the swinging state, the plug cap 25 opens the pressure relief hole 213, and the pre-flushing nozzle 6 performs water spraying operation.

[0099] To this end, the plug cap 25 may be a rubber plug disposed at one end of the swinging arm 24 and facing the pressure relief hole 213. When the swinging arm 24 is in the swinging state, the plug cap 25 leaves from the pressure relief hole 213. Thus, the water discharge starts in the second chamber 221c, and the water pressure in the second chamber 221c is less than the water pressure in the water inlet 221a, so that the sealing valve 23 is deformed toward the second chamber 221c. Thus, the sealing valve 23 is separated from the wall surface surrounding the water inlet 221a, and the first chamber 221b is in communication with the water inlet 221a. Thus, the waterway between the water inlet pipe 222 and the water outlet pipe 223 is opened, the water outlet pipe 223 drains water, and the pre-flushing nozzle 6 performs a water spraying operation.

[0100] The above embodiments may be combined, if needed, to achieve the best technical effect.

[0101] The above descriptions are merely the principle and the embodiments of the present disclosure. It should be pointed out that, for those having ordinary skill in the art, other variations may be made based on the principle of the present disclosure, which should also be regarded as falling in the protection scope of the present disclosure.

Examples

Embodiment Construction

[0042]The specific embodiments of the present disclosure are further described with reference to the drawings hereinafter. Same or equivalent parts are denoted by the same reference numerals. It should be noted that the terms “front”, “rear”, “left”, “right”, “up” and “down” used in the present disclosure refer to the directions in the drawings, and the terms “inner” and “outer” refer to the directions toward or away from geometric centers of specific parts, respectively.

[0043]As shown in FIGS. 1-10, a seat assembly according to an embodiment of the present disclosure comprises a seat 1 and a waterway control mechanism 2.

[0044]A rear end of the seat 1 is provided with two seat lugs 11, and the waterway control mechanism 2 is mounted on a side of one of the seat lugs 11.

[0045]The waterway control mechanism 2 comprises a mechanism body 21 pivotably connected to the seat lug 11 and having a pressure relief hole 213. The waterway control mechanism 2 further comprises a cover 22 connecte...

CROSS REFERENCE TO RELATED APPLICATION

[0001] This application claims the benefit of priority to: Chinese Patent Application No. 202422293691.0 filed in the Chinese Intellectual Property Office on Sep. 19, 2024, which is hereby incorporated by reference in its entirety.FIELD The present disclosure relates to the technical field of sanitary products and particularly relates to a seat assembly and a toilet.BACKGROUND

[0002] Intelligent toilets are becoming more and more popular, and the intelligent toilets are equipped with pre-flushing nozzles and front and rear flushing nozzles. The front and rear flushing nozzles are used for cleaning private parts of the human body, and the pre-flushing nozzles are used for adding a small amount of water to a rear side wall surface of the toilet bowl to pre-wet the wall surface of the toilet bowl in order to reduce the adhesion of dirt to the wall surface. When the toilet is flushed, the dirt may be removed from the wall surface to improve the cleanliness of the toilet.

[0003] In order to control the discharge of water from the pre-flushing nozzle, a manual mechanical switch or an electromagnetic control switch is used to control the opening and closing of the waterway of the pre-flushing nozzle. The manual mechanical switches require users to operate the handle by hand, resulting in a poor user experience. The electromagnetic control switches also require users to operate the control panel or buttons, resulting in a poor user experience. In addition, the cost of electromagnetic control switches is high, and electronic products are easy to rust in humid environments, resulting in a high probability of failure.SUMMARY

[0004] The present disclosure aims to overcome the foregoing shortcomings and provide a seat assembly and a toilet. When the seat rotates, the switching on and off of the waterway control mechanism will be controlled accordingly, and thus the water supply to the pre-flushing nozzle may be initiated or terminated. The user no longer needs to switch on or off the waterway control mechanism by hand. Thus, the user experience may be improved. It adopts a purely mechanical structure and has a long service life.

[0005] According to an embodiment of the present disclosure, a seat assembly includes a seat and a waterway control mechanism.

[0006] A rear end of the seat is provided with at least one seat lug, and the waterway control mechanism is mounted on a side of the at least one seat lug.

[0007] The waterway control mechanism includes a mechanism body pivotably connected to the seat lug and having a pressure relief hole. The waterway control mechanism further includes a cover connected to a side of the mechanism body and having a water inlet pipe and a water outlet pipe. The waterway control mechanism further includes a sealing valve disposed in the cover and having a water flowing hole. The waterway control mechanism further includes a swinging arm pivotably disposed between the mechanism body and the seat lug and configured to bedriven to swing by a rotation of the seat lug.

[0008] The pressure relief hole and a water inlet of the cover are disposed on opposite sides of the sealing valve. One end of the swinging arm is provided with a plug cap, the plug cap is configured to open or close the pressure relief hole when the swinging arm swings. The sealing valve is configured to fluidly connect or disconnect a waterway between the water inlet pipe and the water outlet pipe in response to opening or closing of the pressure relief hole.

[0009] In an embodiment, an elastic element is connected between the other end of the swinging arm and the mechanism body.

[0010] When the elastic element is in an initial state, the plug cap closes the pressure relief hole.

[0011] In an embodiment, a side of the seat lug facing the mechanism body is provided with a first guiding structure. The other end of the swinging arm is provided with a second guiding structure configured to slidably cooperate with the first guiding structure.

[0012] The first guiding structure and / or the second guiding structure are in a circular arc shape.

[0013] In an embodiment, the first guiding structure includes an arc-shaped guiding groove. The guiding groove includes at least one deep groove section and a shallow groove section.

[0014] The second guiding structure includes a guiding element extending toward the guiding groove. The guiding element is in clearance fit with (e.g., engaged with) the guiding groove.

[0015] The plug cap closes the pressure relief hole when the guiding element is disposed in the at least one deep groove section. The plug cap opens the pressure relief hole when the guiding element is disposed in the shallow groove section.

[0016] In an embodiment, the at least one deep groove section includes a first deep groove section and a second deep groove section. The shallow groove section is disposed between the first deep groove section and the second deep groove.

[0017] The seat is disposed in a closed state when the guiding element is disposed in the first deep groove section. The seat is in a fully opened state when the guiding element is disposed in the second deep groove section.

[0018] In an embodiment, the mechanism body is provided with a guiding column extending toward the cover. The sealing valve is slidably assembled onto the guiding column.

[0019] In an embodiment, an edge of the water inlet of the cover is provided with a circle of sealing flange. When the pressure relief hole is disposed in an opened state, the sealing valve is tightly attached to the sealing flange.

[0020] In an embodiment, a side of the mechanism body is provided with two mounting lugs arranged at a vertical interval (e.g., vertically spaced apart from each other). The swinging arm is mounted between the two mounting lugs through a pivot shaft.

[0021] In an embodiment, the pivot shaft is located at an end close to the plug cap.

[0022] According to another embodiment of the present disclosure, a toilet includes a toilet body, a mounting base, a pre-flushing nozzle, and a seat assembly according to any of the above embodiments.

[0023] The mounting base is mounted at a rear end portion of the toilet body. The seat is pivotably connected to the mounting base. The water inlet pipe is connected to a water supply pipeline. The pre-flushing nozzle is connected to the water outlet pipe. The pre-flushing nozzle is directed toward a toilet bowl of the toilet body.

[0024] By adopting the above technical solutions, the present disclosure has the following beneficial effects.

[0025] The seat assembly and the toilet according to the present disclosure include a seat and a waterway control mechanism. When the seat is in a certain state, for example, when the seat is in a closed state and / or fully opened state, the swinging arm is in an initial state, the plug cap blocks the pressure relief hole, and the sealing valve is attached to a wall surface surrounding a water inlet of the cover. Thus, the waterway between the water inlet pipe and the water outlet pipe may be disconnected, and the pre-flushing nozzle does not discharge water. When the seat is in another state, for example, when the seat is rotated and switched from the closed state to the fully opened state, or when the seat is rotated and switched from the fully opened state to the closed state, the swinging arm is driven to swing through a certain angle, the plug cap opens the pressure relief hole, the sealing valve leaves from the wall surface around the water inlet of the cover. Thus, the waterway between the water inlet pipe and the water outlet pipe is fluidly connected, and the pre-flushing nozzle starts discharging water to wet the rear side wall surface of the toilet bowl.

[0026] To sum up, the seat assembly and the toilet according to the present disclosure can control the switching on and off of the waterway control mechanism accordingly when the seat rotates so as to provide water supply or stop the water supply to the pre-flushing nozzle. The user no longer needs to switch on or off the waterway control mechanism by hand. Thus, the user experience may be improved. It adopts a purely mechanical structure and has a long service life.BRIEF DESCRIPTION OF THE FIGURES

[0027] By reference to the drawings, the contents disclosed by the present disclosure should be more easily understood. It should be understood that these drawings are merely used for illustration and are not intended to limit the protection scope of the present disclosure. In the drawings:

[0028] FIG. 1 is a perspective view of a seat assembly according to an embodiment of the present disclosure;

[0029] FIG. 2 is an enlarged schematic diagram of the connection between a waterway control mechanism and a seat lug;

[0030] FIG. 3 is a schematic diagram of an inner side of the seat lug with a first guiding structure;

[0031] FIG. 4 is a sectional view of FIG. 1 along the A-A direction;

[0032] FIG. 5 is a sectional view of FIG. 2 along the B-B direction;

[0033] FIG. 6 is a perspective view of the waterway control mechanism from a view angle;

[0034] FIG. 7 is a perspective view of the waterway control mechanism from another view angle;

[0035] FIG. 8 is an exploded view of the waterway control mechanism from a view angle;

[0036] FIG. 9 is an exploded view of the waterway control mechanism from another view angle;

[0037] FIG. 10 is a sectional view of a sealing valve assembled between a connection base of the mechanism body and a cover;

[0038] FIG. 11 a sectional view of the cover;

[0039] FIG. 12 is a perspective view of a toilet according to an embodiment of the present disclosure;

[0040] FIG. 13 is a schematic diagram of a front / rear flushing nozzle and a pre-flushing nozzle arranged on a rear end portion of a toilet body; and

[0041] FIG. 14 is a flow chart of a method for controlling a pre-flushing nozzle of a toilet to spray water according to an embodiment of the present disclosure.DETAILED DESCRIPTION

[0042] The specific embodiments of the present disclosure are further described with reference to the drawings hereinafter. Same or equivalent parts are denoted by the same reference numerals. It should be noted that the terms “front”, “rear”, “left”, “right”, “up” and “down” used in the present disclosure refer to the directions in the drawings, and the terms “inner” and “outer” refer to the directions toward or away from geometric centers of specific parts, respectively.

[0043] As shown in FIGS. 1-10, a seat assembly according to an embodiment of the present disclosure comprises a seat 1 and a waterway control mechanism 2.

[0044] A rear end of the seat 1 is provided with two seat lugs 11, and the waterway control mechanism 2 is mounted on a side of one of the seat lugs 11.

[0045] The waterway control mechanism 2 comprises a mechanism body 21 pivotably connected to the seat lug 11 and having a pressure relief hole 213. The waterway control mechanism 2 further comprises a cover 22 connected to a side of the mechanism body 21 and having a water inlet pipe 222 and a water outlet pipe 223. The waterway control mechanism 2 further comprises a sealing valve 23 disposed in the cover 22 and having a water flowing hole 231. The waterway control mechanism 2 further comprises a swinging arm 24 pivotably provided between the mechanism body 21 and the seat lug 11 and configured to be driven by the seat lug 11 so as to swing.

[0046] The pressure relief hole 213 and a water inlet 221a of the cover 22 are on opposite sides of the sealing valve 23. One end (e.g., a first end) of the swinging arm 24 is provided with a plug cap 25, and the plug cap 25 is configured to open or close the pressure relief hole 213 when the swinging arm 24 swings. The sealing valve 23 is configured to fluidly connect or disconnect a waterway between the water inlet pipe 222 and the water outlet pipe 223 in response to opening and closing of the pressure relief hole 213.

[0047] The seat assembly according to the present disclosure comprises the seat 1 and the waterway control mechanism 2. The left and right sides of the rear end of the seat 1 are respectively provided with one seat lug 11. The seat lug 11 is provided with a through hole 111 for assembling with a shaft on a mounting base or other components. The seat 1 may rotate around the shaft to realize opening and closing. The seat 1 in a closed state according to the present disclosure means that the seat 1 is disposed on the toilet body 3 as illustrated in FIGS. 12 and 13. The seat 1 in a fully opened state according to the present disclosure means that the seat 1 is flipped from the toilet body 3, and an opening angle is greater than 90°. The process in which the seat 1 is switched from the closed state to the fully opened state is an opening / closing process in which the seat 1 is manually operated or electrically operated. The process in which the seat 1 is switched from the fully opened state to the closed state is a closing process in which the seat 1 is manually operated or electrically operated. The default state of the seat 1 may be the closed state or the fully opened state.

[0048] The waterway control mechanism 2 is configured to control a pre-flushing nozzle 6 shown in FIG. 13 to spray a small amount of water onto the toilet bowl 31, so as to wet the rear side wall surface of the toilet bowl 31 and reduce the adhesion of dirt.

[0049] In the present disclosure, the waterway control mechanism 2 may be a mechanical structure, which is connected to the seat 1, and automatically opens or closes the waterway of the pre-flushing nozzle 6 in response to the rotation of the seat 1.

[0050] The waterway control mechanism 2 is mounted on a side of one of the seat lugs 11. In an embodiment, the waterway control mechanism 2 is mounted on an inner side of one of the seat lugs 11.

[0051] The waterway control mechanism 2 comprises the mechanism body 21, the cover 22, the sealing valve 23, the swinging arm 24, the plug cap 25, and the like.

[0052] The mechanism body 21 may be a plate-like structure or a block-like structure, and the area where the mechanism body 21 is assembled with the cover 22 is provided with the pressure relief hole 213. An outer side of the mechanism body 21 is provided with a mounting shaft 211 for assembling into a through hole 111 of the seat lug 11, and the seat lug 11 is rotatable with respect to the mounting shaft 211. In an embodiment, the area where the mechanism body 21 is assembled with the cover 22 is provided with a connection base 212, and the pressure relief hole 213 penetrates the connection base 212. The connection base 212 is configured to be connected to the opening of the cover 22.

[0053] The cover 22 is in a box-shaped or hemispherical shape and has a cavity 221, and the water inlet of the cavity 221 is also the water inlet 221a of the cover 22. A water inlet 221a is connected to the water inlet pipe 222 and is configured to be connected to a water supply pipeline 7 of the toilet. Specifically, the water inlet pipe 222 may be connected to the water supply pipeline 7 through a hose. In an embodiment, the water inlet pipe 222 is perpendicular to the seat lug 11 and is in an intermediate position of the cover 22. A side of the cover 22 is also provided with the water outlet pipe 223 configured to be connected to the pre-flushing nozzle 6 so as to supply water to the pre-flushing nozzle 6. Specifically, the water outlet pipe 223 may be connected to the pre-flushing nozzle 6 through a hose.

[0054] The sealing valve 23 is a diaphragm valve, which is assembled in the cavity 221. The peripheral edge of the sealing valve 23 is connected to the wall surface of the cavity 221 in a sealing manner. A side of the sealing valve 23 facing the water inlet 221a is configured to be in contact with the wall surface around the water inlet 221a in a sealing manner. Thus, the cavity 221 may be divided into a chamber in which the water inlet 221a is located, a first chamber 221b, and a second chamber 221c. The first chamber 221b is a portion between the peripheral edge of the sealing valve 23 and the wall surface around the water inlet 221a. The second chamber 221c is a portion between the sealing valve 23 and the connection base 212, and the pressure relief hole 213 is in communication with (e.g., in fluid communication with) the second chamber 221c.

[0055] The water outlet of the cover 22 is disposed in the first chamber 221b, and the water outlet pipe 223 is connected to the water outlet of the cover 22. Therefore, when a side of the sealing valve 23 facing the water inlet 221a is in contact with the wall surface surrounding the water inlet 221a in a sealing manner, the first chamber 221b is disconnected from the water inlet 221a, the waterway between the water inlet pipe 222 and the water outlet pipe 223 is disconnected, and thus no water is discharged from the water outlet pipe 223. Thus, the pre-flushing nozzle 6 does not spray water. When the side of the sealing valve 23 facing the water inlet 221a is separated from the wall surface surrounding the water inlet 221a, the first chamber 221b is in communication with the water inlet 221a, the waterway between the water inlet pipe 222 and the water outlet pipe 223 is opened, the water outlet pipe 223 drains water, and the pre-flushing nozzle 6 performs a water spraying operation.

[0056] The sealing valve 23 is provided with a water flowing hole 231 that fluidly connects the water inlet 221a to the second chamber 221c. When the water pressure in the first chamber 221b and the second chamber 221c is equal, because the area of the sealing valve 23 facing the second chamber 221c is larger than the area of the sealing valve 23 facing the water inlet 221a, the sealing valve 23 is deformed toward the water inlet 221a. Thus, the sealing valve 23 comes into contact with the wall surface around the water inlet 221a in a sealing manner, and the first chamber 221b is disconnected from the water inlet 221a. When the water in the second chamber 221c is discharged, the pressure decreases, and the sealing valve 23 is deformed toward the second chamber 221c so as to leave from the wall surface around the water inlet 221a. Thus, the first chamber 221b is in communication with the water inlet 221a.

[0057] The swinging arm 24 is pivotably connected to the mechanism body 21, and the swinging arm 24 is assembled between the mechanism body 21 and the seat lug 11, which may swing back and forth by a certain angle between the mechanism body 21 and the seat lug 11. The swing direction is from the mechanism body 21 side to the seat lug 11 side and from the seat lug 11 side to the mechanism body 21 side. The swinging arm 24 is connected to the seat lug 11 through a linkage structure, and the swinging arm 24 may be driven by a rotation of the seat lug 11 to swing. The linkage structure may adopt two concave-convex fitting tooth blocks, and the two tooth blocks are respectively mounted on the seat lug 11 and the swinging arm 24. When the concave and convex parts of the two tooth blocks are engaged, the swinging arm 24 is kept in the initial state, and when the convex parts of the two tooth blocks are against each other, the swinging arm 24 is in the swinging state. In an embodiment, a combination of a guiding groove having a concave-convex surface and a guiding column may be adopted as the linkage structure. The guiding groove and the guiding column are disposed on the seat lug 11 and the swinging arm 24 respectively, and the guiding column and the guiding groove are slidably connected without disengagement. For example, a T-shaped structure may be adopted. When the end portion of the guiding column is located in the concave region of the guiding groove, the swinging arm 24 remains in the initial state. When the end portion of the guiding column is located in the convex region of the guiding groove, the swinging arm 24 is in the swinging state.

[0058] The plug cap 25 may be a rubber plug disposed at one end of the swinging arm 24 and facing the pressure relief hole 213. When the swinging arm 24 is in the initial state, the plug cap 25 blocks the pressure relief hole 213. Thus, water begins to accumulate in the second chamber 221c until the water pressure in the second chamber 221c is equal to the water pressure in the water inlet 221a, and the sealing valve 23 is deformed toward the water inlet 221a. Thus, the sealing valve 23 comes into contact with the wall surface surrounding the water inlet 221a in a sealing manner, and the first chamber 221b is disconnected from the water inlet 221a. When the swinging arm 24 is in the swinging state, the plug cap 25 leaves from the pressure relief hole 213. Thus, the water discharge starts in the second chamber 221c, and the water pressure in the second chamber 221c is less than the water pressure in the water inlet 221a, so that the sealing valve 23 is deformed toward the second chamber 221c. Thus, the sealing valve 23 is separated from the wall surface surrounding the water inlet 221a, and the first chamber 221b is in communication with the water inlet 221a.

[0059] Based on the above descriptions, the seat assembly according to the present disclosure may realize the following technical effects:

[0060] When the seat 1 is in a certain state, for example, when the seat 1 is in a closed state and / or a fully opened state, the swinging arm 24 is in an initial state, the plug cap 25 blocks the pressure relief hole 213, and the sealing valve 23 is attached to a wall surface surrounding a water inlet 221a of the cover 22. Thus, the waterway between the water inlet pipe 222 and the water outlet pipe 223 is disconnected, and the pre-flushing nozzle 6 does not discharge water. When the seat 1 is in another state, for example, when the seat 1 is rotated and switched from the closed state to the fully opened state, or when the seat 1 is rotated and switched from the fully opened state to the closed state, the swinging arm 24 is driven to swing by a certain angle, the plug cap 25 opens the pressure relief hole 213, and the sealing valve 23 leaves from the wall surface around the water inlet 211a of the cover 22. Thus, the waterway between the water inlet pipe 222 and the water outlet pipe 223 is fluidly connected, and the pre-flushing nozzle 6 starts to discharge water to wet the rear side wall surface of the toilet bowl 31.

[0061] To sum up, the seat assembly according to the present disclosure can switch on and off the waterway control mechanism 2 accordingly when the seat 1 rotates, thereby initiating or terminating the water supply to the pre-flushing nozzle 6. The user no longer needs to switch on and off the waterway control mechanism 2 by hand. This improves the user experience. It adopts a mechanical structure and has a long service life.

[0062] In an embodiment, as shown in FIGS. 4-9, an elastic element 26 is connected between the other end (e.g., a second end) of the swinging arm 24 and the mechanism body 21. When the elastic element 26 is in an initial state, the plug cap 25 closes the pressure relief hole 213.

[0063] In this embodiment, the elastic element 26 is disposed at the end (e.g., the second end) of the swinging arm 24 away from the plug cap 25, and the elastic element 26 may be a spring, an elastic piece, or the like. An elastic element 26 is connected to the mechanism body 21 for supporting the other end of the swinging arm 24. When the swinging arm 24 is in the initial state, the elastic element 26 is also in the initial state for applying a force toward the seat lug 11 to the other end of the swinging arm 24. Thus, one end of the swinging arm 24 with a plug cap 25 is close to or tightly attached to the connection base 212, and the plug cap 25 blocks the pressure relief hole 213.

[0064] In an embodiment, as shown in FIGS. 4-9, a side, facing the mechanism body 21, of the seat lug 11 is provided with a first guiding structure 112. The other end (e.g., the second end) of the swinging arm 24 is provided with a second guiding structure 27 that slidably cooperates with the first guiding structure 112. The first guiding structure 112 and / or the second guiding structure 27 are in a circular arc shape.

[0065] In this embodiment, the first guiding structure 112 and the second guiding structure 27 are configured in order to guide the cooperation between the swinging arm 24 and the seat lug 11. In an embodiment, the first guiding structure 112 may be an arc-shaped guiding groove, and the second guiding structure 27 is a guiding element, for example, a guiding column, a guiding pin, or the like. In another embodiment, the first guiding structure 112 is a guiding element, for example, a guiding column, a guiding pin, or the like. The second guiding structure 27 may be an arc-shaped guiding groove. The central angle, the length, and the like of the guiding groove are set according to the parameters of rotational opening and closing of the seat 1.

[0066] The cooperation between the second guiding structure 27 and the first guiding structure 112 may realize that the second guiding structure 27 maintains the first guiding structure 112 during the rotation of the seat lug 11, and the stability of the assembly between the two may be improved.

[0067] In an embodiment, as shown in FIGS. 4-9, the first guiding structure 112 comprises a guiding groove 1121 in a circular arc shape, and the guiding groove 1121 comprises a deep groove section 1121a and a shallow groove section 1121b.

[0068] The second guiding structure 27 comprises a guiding element 271 extending toward the guiding groove 1121, and the guiding element 271 is in clearance fit with (e.g., engaged with) the guiding groove 1121.

[0069] The plug cap 25 closes the pressure relief hole 213 when the guiding element 271 is disposed in the deep groove section 1121a. The plug cap 25 opens the pressure relief hole 213 when the guiding element 271 is disposed in the shallow groove section 1121b.

[0070] In the present embodiment, the aforementioned linkage structure is integrated in the first guiding structure 112 and the second guiding structure 27. Specifically, the first guiding structure 112 comprises the arc-shaped guiding groove 1121, and the length, the central angle, and the like of the guiding groove 1121 are set according to the parameters of rotational opening and closing of the seat 1. The guiding groove 1121 comprises the deep groove section 1121a and the shallow groove section 1121b, which are the aforementioned concave-convex surface. The length of the deep groove section 1121a and the shallow groove section 1121b is determined according to the stage at which the product needs to open and close the pre-flushing nozzle 6.

[0071] The second guiding structure 27 comprises the guiding element 271, such as a guiding column, a guiding pin. The guiding element 271 is disposed on the outer side the other end of the swinging arm 24. The guiding element 271 extends toward the guiding groove 1121 and is in clearance fit with (e.g., engaged with) the guiding groove 1121.

[0072] When the guiding element 271 is in the deep groove section 1121a, the swinging arm 24 is in the initial state and the plug cap 25 closes the pressure relief hole 213. When the guiding element 271 is in the shallow groove section 1121b, the swinging arm 24 is in the swinging state, and the plug cap 25 opens the pressure relief hole 213.

[0073] In an embodiment, as shown in FIGS. 3 and 5, the guiding groove 1121 comprises two deep groove sections 1121a (a first deep groove section and a second deep groove section) and one shallow groove section 1121b, and the shallow groove section 1121b is disposed between the two deep groove sections 1121a.

[0074] The seat 1 is disposed in a closed state when the guiding element 271 is in one of the two deep groove sections 1121a (e.g., the first deep groove section). The seat 1 is disposed in a fully opened state when the guiding element 271 is in the other one of the deep groove sections 1121a (e.g., the second deep groove section).

[0075] In this embodiment, the guiding groove 1121 comprises two deep groove sections 1121a and one shallow groove section 1121b, and the two deep groove sections 1121a are connected to two ends of the shallow groove section 1121b.

[0076] Accordingly, it may realize that when the seat 1 is in the closed state and when the seat 1 is in the fully opened state, the swinging arm 24 is in the initial state, the plug cap 25 closes the pressure relief hole 213, and the pre-flushing nozzle 6 does not spray water. During the flipping of the seat 1 to be opened or closed (indicating that the user is about to use the toilet or has finished using the toilet), the swinging arm 24 is in the swinging state, the plug cap 25 opens the pressure relief hole 213, and the pre-flushing nozzle 6 performs water spraying operation.

[0077] In an embodiment, as shown in FIGS. 5 and 8-10, the mechanism body 21 is provided with a guiding column 214 extending toward the cover 22. The sealing valve 23 is slidably assembled on the guiding column 214, and thus the movement and deformation of the sealing valve 23 are guided.

[0078] In an embodiment, the guiding column 214 passes through the water flowing hole 231, the hole diameter of the water flowing hole 231 is larger than the column diameter of the guiding column 214, and there is a certain gap for water flow, which may not only prevent excessive water flow, but also realize the assembly with the guiding column 214. This simplifies the structure.

[0079] In an embodiment, as shown in FIGS. 10 and 11, an edge of a water inlet 221a of the cover 22 is peripherally provided with a sealing flange 224. When the pressure relief hole 213 is in an opened state, the sealing valve 23 is tightly attached to the sealing flange 224. This improves the sealing effect between the end surface of the sealing valve 23 and the wall surface surrounding the water inlet 221a, so as to disconnect the waterway between the water inlet pipe 222 and the water outlet pipe 223 in a better manner.

[0080] In an embodiment, as shown in FIGS. 7 and 9, a side of the mechanism body 21 is provided with two mounting lugs 215 arranged at a vertical interval (e.g., vertically spaced apart from each other), and the swinging arm 24 is mounted between the two mounting lugs 215 through a pivot shaft 28.

[0081] In this embodiment, the swinging arm 24 is assembled between the upper and lower mounting lugs 215 with clearance. This may prevent the swinging arm 24 from swaying up and down or displacing and improve the assembly stability. Through holes are disposed in the mounting lugs 215 for the pivot shaft 28 to pass through and connect.

[0082] In an embodiment, as shown in FIGS. 7 and 9, the pivot shaft 28 is disposed at an end proximate to the plug cap 25. This may provide greater force to the end at which the plug cap 25 is located and thus may block the pressure relief hole 213.

[0083] As shown in FIGS. 12 and 13, an embodiment of the present disclosure provides a toilet comprising a toilet body 3, a mounting base 4, a pre-flushing nozzle 6, and a seat assembly according to any one of the above embodiments.

[0084] The mounting base 4 is mounted at a rear end portion of the toilet body 3. The seat 1 is pivotably connected to the mounting base 4. The water inlet pipe 222 is connected to a water supply pipeline 7. The pre-flushing nozzle 6 is connected to the water outlet pipe 223. The pre-flushing nozzle 6 is directed toward a toilet bowl 31 of the toilet body 3.

[0085] The toilet according to the present disclosure comprises the toilet body 3, the mounting base 4, the pre-flushing nozzle 6, the seat assembly, and the like.

[0086] The descriptions of the structure, construction, and working principle of the seat have been omitted, and the foregoing descriptions of the seat assembly are incorporated herein.

[0087] The toilet body 3 is a ceramic body and has a toilet bowl 31. The mounting base 4 is mounted at the rear end of the toilet body 3 and is configured to mount the seat 1 and the toilet cover. The mounting base 4 is configured to mount a waterway structure, an electronic device, a front / rear flushing nozzle 5, the pre-flushing nozzle 6, and the like. The mechanism body 21 is fixed in the cavity body of the mounting base 4.

[0088] The water inlet pipe 222 is connected to the water supply pipeline 7 through a hose. The front / rear flushing nozzle 5 is connected to the water supply pipeline 7 through a hose. The pre-flushing nozzle 6 is connected to the water outlet pipe 223 through a hose. The pre-flushing nozzle 6 is directed toward the toilet bowl 31 of the toilet body 3 and configured to spray water to the rear side wall surface of the toilet bowl 31 so as to wet the wall surface and reduce the adhesion of dirt.

[0089] In an embodiment, the toilet includes a base (e.g., a pedestal, bowl, etc.) and a tank. The base is configured to be attached to another object such as a drainpipe, floor, or another suitable object. The base includes a bowl, a sump (e.g., a receptacle) disposed below the bowl, and a trapway fluidly connecting the bowl to a drainpipe or sewage line. The tank may be supported by the base, such as an upper surface of a rim. The tank may be integrally formed with the base as a single unitary body. In other embodiments, the tank may be formed separately from the base and coupled (e.g., attached, secured, fastened, connected, etc.) to the base. The toilet may further include a tank lid covering an opening and inner cavity in the tank. The toilet may include a seat assembly including a seat and a seat cover rotatably coupled to the base. The toilet may further include a hinge assembly.

[0090] In another embodiment, the toilet may be a tankless toilet. The toilet includes a base and a seat assembly coupled to the base. The base includes a bowl, a sump disposed below the bowl, and a trapway fluidly connecting the bowl to a drainpipe or sewage line. The toilet includes a waterline that supplies the toilet with water. The toilet may further include a seat assembly including a seat and a seat cover rotatably coupled to the base. The toilets described above are provided herein as non-limiting examples of toilets that may be configured to utilize aspects of the present disclosure.

[0091] In some examples, a bidet may be included in a seat or pedestal of a toilet. In other examples, the bidet may be manufactured separately from and attached or coupled to a seat or pedestal of a toilet. The bidet includes a housing. The housing is configured to receive a flow of water through a housing inlet and dispense the flow of water from a housing outlet. The housing inlet and housing outlet may be located on opposite ends of the housing from one another, such that water may flow through the housing from the housing inlet to the housing outlet. In some examples, the housing further includes a chamber. As the housing receives the flow of water, the chamber may fill with water and provide a flow of water between the housing inlet and the housing outlet. The chamber may be configured to contain the flow of water and direct the flow of water from the housing inlet to the housing outlet. After the chamber has filled with water, the flow of water may travel along a substantially linear path between the housing inlet and the housing outlet. In some examples, one or more walls within the housing may be included to help direct a flow of water between the housing inlet and the housing outlet. The bidet may further include a housing inlet conduit configured to direct a flow of water to the housing inlet. The housing inlet conduit may be coupled to a water supply such as tank or waterline. The housing may further include a gear assembly or a portion of the gear assembly.

[0092] An embodiment of the present disclosure further provides a method for controlling a pre-flushing nozzle of a toilet to spray water. FIG. 14 is a flow chart of a method for controlling a pre-flushing nozzle of a toilet to spray water according to an embodiment of the present disclosure. Here, the pre-flushing nozzle of the toilet in the method are the pre-flushing nozzle of the toilet according to any of the embodiments of the present disclosure. The descriptions regarding the pre-flushing nozzle and the toilet as described in the present disclosure are incorporated herein. The pre-flushing nozzle and the toilet are configured to perform an operation, function, or the like as described in the present disclosure.

[0093] At act S101, at least one seat lug 11 disposed at the rear end of the seat 1 is rotated by flipping the seat 1 of the toilet with respect to the toilet body 3.

[0094] Specifically, as described above, the left and right sides of the rear end of the seat 1 are respectively provided with one seat lug 11. The seat lug 11 is provided with a through hole 111 for assembling with a shaft on a mounting base or other components. The seat 1 may rotate around the shaft to realize opening and closing.

[0095] At act S102, in response to the rotation of the at least one seat lug 1, the state of the swinging arm 24 is changed from the initial state to the swinging state.

[0096] Specifically, as described above, the swinging arm 24 is pivotably connected to the mechanism body 21, and the swinging arm 24 is assembled between the mechanism body 21 and the seat lug 11, which may swing back and forth by a certain angle between the mechanism body 21 and the seat lug 11. The swing direction is from the mechanism body 21 side to the seat lug 11 side and from the seat lug 11 side to the mechanism body 21 side. The swinging arm 24 is connected to the seat lug 11 through a linkage structure, and the swinging arm 24 may be driven by a rotation of the seat lug 11 to swing.

[0097] At act S103, in response to the swinging state of the swinging arm 24, the pre-flushing nozzle 6 is allowed to spray the water by connecting the waterway between the water inlet pipe 222 and the water outlet pipe 223.

[0098] Specifically, as described above, during the flipping of the seat 1 to be opened or closed (indicating that the user is about to use the toilet or has finished using the toilet), the swinging arm 24 is in the swinging state, the plug cap 25 opens the pressure relief hole 213, and the pre-flushing nozzle 6 performs water spraying operation.

[0099] To this end, the plug cap 25 may be a rubber plug disposed at one end of the swinging arm 24 and facing the pressure relief hole 213. When the swinging arm 24 is in the swinging state, the plug cap 25 leaves from the pressure relief hole 213. Thus, the water discharge starts in the second chamber 221c, and the water pressure in the second chamber 221c is less than the water pressure in the water inlet 221a, so that the sealing valve 23 is deformed toward the second chamber 221c. Thus, the sealing valve 23 is separated from the wall surface surrounding the water inlet 221a, and the first chamber 221b is in communication with the water inlet 221a. Thus, the waterway between the water inlet pipe 222 and the water outlet pipe 223 is opened, the water outlet pipe 223 drains water, and the pre-flushing nozzle 6 performs a water spraying operation.

[0100] The above embodiments may be combined, if needed, to achieve the best technical effect.

[0101] The above descriptions are merely the principle and the embodiments of the present disclosure. It should be pointed out that, for those having ordinary skill in the art, other variations may be made based on the principle of the present disclosure, which should also be regarded as falling in the protection scope of the present disclosure.

Examples

Embodiment Construction

[0042]The specific embodiments of the present disclosure are further described with reference to the drawings hereinafter. Same or equivalent parts are denoted by the same reference numerals. It should be noted that the terms “front”, “rear”, “left”, “right”, “up” and “down” used in the present disclosure refer to the directions in the drawings, and the terms “inner” and “outer” refer to the directions toward or away from geometric centers of specific parts, respectively.

[0043]As shown in FIGS. 1-10, a seat assembly according to an embodiment of the present disclosure comprises a seat 1 and a waterway control mechanism 2.

[0044]A rear end of the seat 1 is provided with two seat lugs 11, and the waterway control mechanism 2 is mounted on a side of one of the seat lugs 11.

[0045]The waterway control mechanism 2 comprises a mechanism body 21 pivotably connected to the seat lug 11 and having a pressure relief hole 213. The waterway control mechanism 2 further comprises a cover 22 connecte...

Claims

1-10. (canceled)11. A seat assembly, comprising:a seat comprising at least one seat lug disposed at a rear end of the seat; anda waterway control mechanism disposed on a side of the at least one seat lug, the waterway control mechanism comprising:a mechanism body pivotably connected to the at least one seat lug and comprising a pressure relief hole;a cover connected to the mechanism body and comprising a water inlet pipe and a water outlet pipe;a sealing valve disposed in the cover and comprising a water flowing hole; anda swinging arm pivotably disposed between the mechanism body and the at least one seat lug and configured to be driven by a rotation of the at least one seat lug so as to swing.

12. The seat assembly according to claim 11, wherein the pressure relief hole and a water inlet of the cover are disposed on opposite sides of the sealing valve,wherein the waterway control mechanism is further comprising a plug cap disposed at a first end of the swinging arm is configured to open or close the pressure relief hole when the swinging arm swings, andwherein the sealing valve is configured to fluidly connect or disconnect a waterway between the water inlet pipe and the water outlet pipe in response to opening or closing of the pressure relief hole.

13. The seat assembly according to claim 12, further comprising:an elastic element connected between a second end of the swinging arm and the mechanism body,wherein when the elastic element is in an initial state, the plug cap closes the pressure relief hole.

14. The seat assembly according to claim 13, further comprising:a first guiding structure disposed on a side, facing the mechanism body, of the seat lug; anda second guiding structure disposed on the second end of the swinging arm and configured to slidably cooperate with the first guiding structure,wherein at least one of the first guiding structure or the second guiding structure are in a circular arc shape.

15. The seat assembly according to claim 14, wherein the first guiding structure comprises a guiding groove in the circular arc shape,wherein the guiding groove comprises at least one deep groove section and a shallow groove section,wherein the second guiding structure comprises a guiding element extending toward the guiding groove, andwherein the guiding element is configured to be engaged with the guiding groove.

16. The seat assembly according to claim 15, wherein the plug cap closes the pressure relief hole when the guiding element is disposed in the at least one deep groove section, andwherein the plug cap opens the pressure relief hole when the guiding element is disposed in the shallow groove section.

17. The seat assembly according to claim 16, wherein the at least one deep groove section comprises a first deep groove section and a second deep groove section,wherein the shallow groove section is disposed between the first deep groove section and the second deep groove section,wherein the seat is disposed in a closed state when the guiding element is disposed in the first deep groove section, andwherein the seat is disposed in a fully opened state when the guiding element is disposed in the second deep groove section.

18. The seat assembly of claim 12, wherein the mechanism body further comprises a guiding column extending toward the cover, andwherein the sealing valve is slidably assembled on the guiding column.

19. The seat assembly according to claim 12, wherein the mechanism body further comprises a sealing flange is disposed on an edge of the water inlet of the cover, andwherein when the pressure relief hole is in an opened state, the sealing valve is attached to the sealing flange.

20. The seat assembly according to claim 12, wherein the mechanism body further comprises two mounting lugs vertically spaced apart from each other, andwherein the swinging arm is mounted between the two mounting lugs through a pivot shaft.

21. The seat assembly according to claim 20, wherein the pivot shaft is disposed at an end close to the plug cap.

22. The seat assembly according to claim 12, wherein the mechanism body further comprises a connection base configured to be connected to an opening of the cover, andwherein the pressure relief hole penetrates the connection base.

23. The seat assembly according to claim 22, wherein the cover comprises a cavity including:a chamber where the water inlet of the cover is located;a first chamber defined by a portion between a peripheral edge of the sealing valve and a wall surface around the water inlet of the cover; anda second chamber defined by a portion between the sealing valve and the connection base, andwherein the pressure relief hole is in fluid communication with the second chamber.

24. The seat assembly according to claim 23, wherein the water inlet pipe is disconnected from the water outlet pipe when the sealing valve is deformed toward the water inlet of the cover so as to contact the wall surface around the water inlet of the cover, andwherein the water inlet pipe is fluidly connected to the water outlet pipe when the sealing valve is deformed toward the second chamber so as to leave from the wall surface around the water inlet of the cover.

25. The seat assembly according to claim 24, wherein when the swinging arm is in an initial state:the plug cap blocks the pressure relief hole,water is accumulated in the second chamber until a water pressure in the second chamber is equal to a water pressure in the water inlet of the cover, andthe seal valve is deformed toward the water inlet of the cover.

26. The seat assembly according to claim 24, wherein when the swinging arm is in a swinging state:the plug cap leaves from the pressure relief hole,the water pressure in the second chamber is decreased to be less than the water pressure in the water inlet of the cover, andthe sealing valve is deformed toward the second chamber.

27. A toilet, comprising:a toilet bowl;a toilet body;a mounting base disposed at a rear end portion of the toilet body;a seat assembly comprising:a seat pivotably connected to the mounting base, the seat comprising at least one seat lug disposed at a rear end of the seat; anda waterway control mechanism disposed on a side of the at least one seat lug, the waterway control mechanism comprising:a mechanism body pivotably connected to the at least one seat lug and comprising a pressure relief hole;a cover connected to the mechanism body and comprising a water inlet pipe and a water outlet pipe;a sealing valve disposed in the cover and comprising a water flowing hole; anda swinging arm pivotably disposed between the mechanism body and the at least one seat lug and configured to be driven by a rotation of the at least one seat lug so as to swing;a water supply pipeline configured to be connected to the water inlet pipe;a pre-flushing nozzle configured to be connected to the water outlet pipe and directed toward the toilet bowl.

28. The toilet according to claim 27, wherein the pressure relief hole and a water inlet of the cover are disposed on opposite sides of the sealing valve,wherein the waterway control mechanism is further comprising a plug cap disposed at a first end of the swinging arm is configured to open or close the pressure relief hole when the swinging arm swings, andwherein the sealing valve is configured to fluidly connect or disconnect a waterway between the water inlet pipe and the water outlet pipe in response to opening or closing of the pressure relief hole.

29. A method for controlling a pre-flushing nozzle of a toilet to spray water, the method comprising:rotating at least one seat lug disposed at a rear end of the seat by flipping a seat of the toilet with respect to a toilet body;in response to a rotation of the at least one seat lug, changing a state of a swinging arm from an initial state to a swinging state;in response to the swinging state of the swinging arm, allowing the pre-flushing nozzle to spray the water by connecting a waterway between a water inlet pipe and a water outlet pipe.

30. The method according to 29, wherein allowing the pre-flushing nozzle to spray the water comprises:in response to a deformation of a sealing valve, moving a plug cap disposed at an end of the swinging arm to leave from a pressure relief hole.

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