Flushing water supply control valve used in power-off state and toilet flushing assembly

Abstract

A flushing water supply control valve used in a power-off state and a toilet flushing assembly comprise a housing, a water control component, a blocking component and a switch component, the housing is provided with a water inlet part, a water outlet part, a pressure chamber, an auxiliary chamber and several drainage channels; the water control component comprises an adjusting seat, a movable valve sleeve, a first elastic member and an elastic switching structure, and the adjusting seat is installed in the pressure chamber; the movable valve sleeve moves in the pressure chamber under the action of water pressure and the first elastic member, and an acting surface cooperating with the elastic switching structure is formed thereon.

Description

CROSS-REFERENCE TO RELATED APPLICATION

[0001] This application claims the priority benefit of China application serial no. 202411828423.2, filed on Dec. 12, 2024. The entirety of the above-mentioned patent application is hereby incorporated by reference herein and made a part of this specification.BACKGROUNDTechnical Field

[0002] The disclosure relates to the field of sanitary ware manufacturing, and is particularly related to a flushing water supply control valve used in a power-off state and a toilet flushing assembly.Description of Related Art

[0003] Currently, for existing smart toilets, since the water tank is generally lower than the seat cover plate, there is no potential energy for flushing. Therefore, a water pump is required to pump water in the water tank of low water level sequentially to the rim water channel and the main flushing water channel for flushing. The flushing time and the amount of flushed water for the rim water channel and the main flushing water channel are achieved by the cooperation of the water inlet float bowl and the switching structure. When the water is pumped by the pump, the water level in the water tank drops. When the water level drops to a position manually set, the main flushing water channel is switched on. When the water level drops to the bottom, the water tank is refilled until the water level in the water tank reaches the original position, that is, the rim water channel is switched back to the original state.

[0004] The above-mentioned method is realized by the most common structure, and the water inflow and the waterway switching are realized by the change of water level. However, this structure is bulky and the water inlet float bowl is required to serve as a driving member. When the water inlet float bowl gets stuck by the scale or other factors, the lifting and lowering of the water inlet float bowl is unsmooth, and switching of water channels for flushing cannot be achieved, and the stability is poor. In addition, due to the large volume, a large space in the water tank is occupied, resulting in insufficient water storage in the water tank. As a result, dirt and sewage cannot be flushed away completely. Moreover, due to the restriction from the switching structure, water refill can only happen when the water inlet float bowl is lowered to the lowest water level set, otherwise it is unable for the main flushing channel to fulfill the flushing. As a result, a situation where the flushing is incomplete due to the insufficient water amount and water refill is unable to happen will occur.

[0005] For this reason, researchers have developed a switching structure which realizes waterway switching without relying on an external water inlet float bowl. The advantage of this structure compared to the common structure is that: the volume is reduced, and the waterway switching is achieved without relying on the water inlet float bowl, and water refill can be realized even when the water inlet float bowl is not at the lowest position, therefore the water tank can be refilled quickly while the water is being discharged. However, the realization of the switching between the rim water channel and the main flushing water channel by this switching structure has to rely on the power on and off of the water pump and the change of the inlet water pressure; or the entire switching structure cannot be used.

[0006] It also means that in the event of a power outage / power-off state, the flushing system of the toilet is completely paralyzed and cannot be used normally, which seriously affects the user's experience (it is easily misjudged by consumers as product damage and being labeled as counterfeit products of low-quality). Therefore, the difficulties such as how to achieve smooth water inflow with potential energy, and how to achieve water flowing out from the rim water channel and from the main flushing water channel sequentially while being able to control the water outflow time (water output amount) of the two water channels in a power-off state, as well as how to realize the aim of being small in size and space saving, have to be solved simultaneously by further research and improvement.SUMMARY

[0007] The purpose of the present disclosure is to overcome the above-mentioned defects or problems in BACKGROUND by providing a flushing water supply control valve used in a power-off state and a toilet flushing assembly. The structure is simple, easy to manufacture and implement, and cost saving. The problem that existing toilets or toilet bowls cannot be used normally in a power-off state has been solved.

[0008] To achieve the above purpose, the present disclosure adopts the following technical solutions:

[0009] A flushing water supply control valve used in a power-off state comprises a housing, a water control component, a blocking component and a switch component;

[0010] the housing is provided with a water inlet part, a water outlet part, a pressure chamber, an auxiliary chamber and several drainage channels, the auxiliary chamber is provided for accommodating the switch component and connecting and disconnecting the pressure chamber and the water inlet part, the pressure chamber is provided for accommodating the water control component, the blocking component is installed at a position between a water inlet position of the water outlet part and the pressure chamber, and pressure relief and water drainage in the pressure chamber and the auxiliary chamber are respectively realized by the drainage channels;

[0011] the water control component comprises an adjusting seat, a movable valve sleeve, a first elastic member and an elastic switching structure, the adjusting seat is installed in the pressure chamber and is provided with a channel connecting the blocking component and the pressure chamber, the movable valve sleeve moves in the pressure chamber under the action of water pressure and the first elastic member, and an acting surface cooperating with the elastic switching structure is formed on the movable valve sleeve, two ends of the first elastic member act on the adjusting seat and the movable valve sleeve respectively, the elastic switching structure is installed on the adjusting seat and abuts and cooperates with the acting surface of the movable valve sleeve, and as a position of the movable valve sleeve in the pressure chamber changes, the channel is opened and closed at least twice;

[0012] the blocking component opens and closes the water inlet of the water outlet part according to the pressure change of the pressure chamber;

[0013] the switch component is installed on the housing body and is used for fulfilling and cutting-off the connection between the water inlet part and the pressure chamber.

[0014] Furthermore, when the pressure chamber is filled with water and the switch component is in a closed state, the blocking component sequentially opens the water outlet part.

[0015] Furthermore, wherein the elastic switching structure includes a movable frame, an abutting member and a second elastic member, the movable frame is swingably installed on the adjusting seat through a hinge member provided on the movable frame, one side of the movable frame is used for opening and closing the channel, and another side of movable frame cooperates with the second elastic member through the abutting member and acts between the adjusting seat and the movable valve sleeve to make the abutting member abut against the acting surface, wherein the movable valve sleeve moves along the pressure chamber with the acting surface on an inner wall of the movable valve sleeve contacting and cooperating with the abutting member, thus making the abutting member swing according to the position change of the abutting member on the acting surface and driving the movable frame to open and close the channel.

[0016] Furthermore, the acting surface is arranged in a wave shape and at least two docking positions are formed thereon, wherein, when the movable valve sleeve axially moves and the abutting member radially abutted falls on the at least docking positions formed on the acting surface, the channel is opened or blocked, and the blocking component is thus driven to open or block the water outlet part.

[0017] Furthermore, the flushing water supply control valve used in a power-off state comprises a V-shaped sealing member sleeved on an outer circumferential groove of the movable valve sleeve and acting on an inner side of the pressure chamber to make the movable valve sleeve axially and hermetically move in the pressure chamber.

[0018] Furthermore, the blocking component includes a sealing lip piece for covering the water inlet of the water outlet part, a first pressure stabilizing chamber is formed between the adjusting seat and the water outlet part by separation of the sealing lip piece, and the first pressure stabilizing chamber is connected to the channel of the adjusting seat, wherein the sealing lip piece is provided with a drainage hole connecting the first pressure stabilizing chamber and the water inlet part.

[0019] Furthermore, the switch component includes a sealing diaphragm, a second pressure stabilizing chamber and a driving assembly, and the sealing diaphragm is installed in the auxiliary chamber and covers an inlet of the pressure chamber, and is provided with a water passing hole connecting the water inlet part and the second pressure stabilizing chamber, the driving assembly is actuated by external force to open and close the water passing hole, changing pressure on two end faces of the sealing diaphragm to make the water inlet part and the pressure chamber be connected or disconnected.

[0020] Furthermore, the driving assembly includes a connecting rod, a third elastic member and a deformation member, an end of the connecting rod is used for opening and closing the water passing hole and another other end is connected to the deformation member, the deformation member moves towards a direction of the water passing hole under an action of air pressure and drives the connecting rod to open the water passing hole to change the pressure on the two end faces of the sealing diaphragm, wherein the elastic member is used to drive the connecting rod to return to the original position and block the water passing hole, and the drainage channels are connected to the water passing hole.

[0021] Furthermore, the flushing water supply control valve used in a power-off state comprises an air pressure switch installed outside the water tank and hermetically connected to the housing through an air pipe and acting on the deformation member through air pressure.

[0022] Furthermore, the drainage channels comprises a first drainage channel, a second drainage channel and a third drainage channel, the first drainage channel is used for discharging the water flow in the auxiliary chamber, the second drainage channel is connected to the channel for discharging the water flow in the first pressure stabilizing chamber, and the third drainage channel is connected to the pressure relief chamber for discharging the water flow in the pressure relief chamber.

[0023] Furthermore, a flow regulating valve is also installed in the third drainage channel for adjusting a water outlet area of the third drainage channel to regulate a discharge speed.

[0024] A toilet flushing assembly includes a triangle valve, a water pump, a waterway switching valve, a connecting pipe and the aforesaid flushing water supply control valve, the water inlet part of the flushing water supply control valve is connected to the municipal pipeline, and the water outlet part is connected to the triangle valve, the water pump, the flushing water supply control valve and the waterway switching valve are respectively connected to the triangle valve, so that the water pump and the flushing water supply control valve intermittently supply water to the waterway switching valve.

[0025] From the above description of the present disclosure, compared with the prior art, the present disclosure has the following beneficial effects:

[0026] The present disclosure provides a flushing water supply control valve used in a power-off state and a toilet flushing assembly. The structure is simple, easy to manufacture and implement and cost saving. The flushing water supply control valve of the present disclosure breaks through the drawback that the traditional mechanical valve and electronically controlled valve cannot be used complementarily and realizes the flushing function in a power-off state. The flushing function here does not simply refer to turn on / off the flushing function, but a flushing function integrated with the following multiple effects:

[0027] Firstly, sequential flushing of the rim water channel and the main flushing water channel can be realized by one-key activation (one press), that is to say, the sequential flushing of the rim water channel and the main flushing water channel can be realized by pressing once, without the need of multiple presses, a good user experience is provided.

[0028] Secondly, on the basis of one-key pressing, the flushing time (that is, the amount of flushed water) can be well controlled. When the switch component is open, the water flow impacts the movable valve sleeve to the bottom of the pressure chamber, and the connection between the water inlet part and the pressure chamber is quickly cut-off. At this moment, the water flow in the pressure chamber flows out from the drainage channel, and under the action of the first elastic member, the water in the pressure chamber is slowly squeezed out. During this process, the movable valve sleeve is slowly moving upward, and the acting surface cooperates with the elastic switching structure to open the channel, and then the blocking component is driven to open to let the water flow out from the water outlet part, thus realizing the flushing of the rim water channel. As the movable valve sleeve moves upward, the elastic switching structure is closed due to the position change of the acting surface. At this moment, the position of the waterway switching valve is switched, and the main flushing water channel is switched to an open state to realize the flushing function. And as the movable valve sleeve continues to move upward, the elastic switching structure is changed to open the channel again, and then the water outlet part is open again to supply water to the main flushing water channel. A very important improvement here is that the flushing time and the amount of flushed water of the entire rim water channel and the main flushing water channel are set according to the position change of the movable valve sleeve, and the elastic force of the first elastic member dominates the speed of the position change of the movable valve sleeve. The elastic force of the first elastic member is relatively constant and stable, and the entire flushing time is uniformly controlled. The situation where the flushing time and the amount of flushed water of the rim water channel each time is different from that of the main flushing water channel in the existing structure will not occur, because the existing structure is based on the water pressure, but the water pressure is fluctuating constantly. When the water pressure is high, the flushing time is long, and when the water pressure is low, the flushing time is short. Quantification cannot be realized and a constant flushing time cannot be guaranteed, and the user experience is extremely poor. The intermittent opening and closing method of the present disclosure is no longer related to the inlet water pressure, the control is constant and the flushing time (water amount) for each time is substantively uniform.

[0029] Furthermore, the entire structure is small in volume and can operate without the need of the components of the water inlet float bowl.

[0030] In summary, the flushing water supply control valve of the present disclosure has simultaneously realizes the following advantages: small in volume, activating the sequential flushing of the rim water channel and the main flushing water channel by just pressing once, constantly controlling the flushing time and the water amount each time, and can be used smoothly in a power-off state and a good user experience is provided. The design concept and structure of the whole product are very ingenious.BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions of the embodiments of the disclosure, the following is a brief introduction to the drawings required used in the description of the embodiments. Obviously, the drawings described below are some embodiments of the disclosure. For those of ordinary skill in the art, other drawings may be further obtained based on these drawings without exerting creative efforts.

[0032] FIG. 1 is a schematic diagram of the three-dimensional exploded structure of a flushing water supply control valve of the present disclosure.

[0033] FIG. 2 is a schematic diagram of the three-dimensional structure of the flushing water supply control valve of the present disclosure.

[0034] FIG. 3 is a first sectional view of the flushing water supply control valve of the present disclosure.

[0035] FIG. 4 is a second sectional view of the flushing water supply control valve of the present disclosure.

[0036] FIG. 5 is a sectional view of the flushing water supply control valve of the present disclosure in the original state.

[0037] FIG. 6 is a sectional view of the flushing water supply control valve of the present disclosure when a movable valve sleeve is at the bottom.

[0038] FIG. 7 is a sectional view of the flushing water supply control valve of the present disclosure when the movable valve sleeve is in a gradually moving state.

[0039] FIG. 8 is a schematic diagram of the three-dimensional structure of the flushing assembly of the present disclosure.DESCRIPTION OF THE EMBODIMENTS

[0040] Technical solutions in the embodiments of the disclosure will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the disclosure. Obviously, the described embodiments are preferred embodiments of the disclosure and should not be considered as excluding other embodiments. Based on the embodiments of the disclosure, all other embodiments obtained by those of ordinary skill in the art without exerting any creative efforts shall fall within the scope of the disclosure.

[0041] In the claims, specification, and above-mentioned drawings of the disclosure, unless otherwise clearly defined, the use of terms, such as “first”, “second”, “third” etc. are for distinguishing different objects rather than for describing a specific order.

[0042] In the claims, specification, and above-mentioned drawings of the disclosure, unless otherwise clearly defined, directional terms, such as the terms “central”, “lateral”, “longitudinal”, “horizontal”, “vertical”, “top”, “bottom”, “inside”, “outside”, “up”, “down”, “front”, “back”, “left”, “right”, “clockwise”, “counterclockwise”, etc., indicating directions or positional relationships are based on directions and positional relationships shown in the drawings, and are only for convenience of describing the disclosure and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, it cannot be understood as limiting the specific scope of the disclosure.

[0043] In the claims, specification, and above-mentioned drawings of the disclosure, unless otherwise clearly defined, if the term, “fixing” or “fixed connection”, is used, it should be understood in a broad sense, that is, any connection method without a displacement relationship and relative rotation relationship between the two, that is to say, including non-detachable fixed connection, detachable fixed connection, integrated connection, and fixed connection through other devices or elements.

[0044] In the claims, specification, and above-mentioned drawings of the disclosure, if the terms, “including”, “having”, and variations thereof are used, they are intended to mean “including but not limited to”.

[0045] Referring to FIG. 1 to FIG. 4, a flushing water supply control valve used in a power-off state in the present disclosure is configured to start when the water pump 9 cannot be used (that is, in a power outage state or being damaged and unable to work normally) to realize the flushing of the toilet (toilet bowl).

[0046] The flushing water supply control valve of the present disclosure mainly replaces the water pump 9 to supply water when the water pump 9 cannot be used. The water supply here also should be intermittent water supply, in this way the waterway switching valve can complete the switching when the water pressure is disappeared during the switching process.

[0047] The flushing water supply control valve in this embodiment includes: a housing 1, a water control component 2, a blocking component 3 and a switch component 4.

[0048] The housing 1 is formed by injection molding and is divided into a housing body 11, a base 12 and a top cover 13. The housing body 11, the base 12 and the top cover 13 are assembled and integrated into one through ultrasonic welding or assembled by cooperating with other assembly structures, and a water inlet part 14, a water outlet part 15, a pressure chamber 16, an auxiliary chamber 17 and several drainage channels 18 are provided.

[0049] The auxiliary chamber 17 is provided for accommodating the switch component 4 and is used for connecting or disconnecting the pressure chamber 16 and the water inlet part 14.

[0050] The pressure chamber 16 is provided for accommodating the water control component 2.

[0051] The blocking component 3 is installed at the position between the water inlet of the water outlet part 15 and the pressure chamber 16.

[0052] Pressure relief and water drainage in the pressure chamber 16 and the auxiliary chamber 17 are respectively realized through the drainage channels 18.

[0053] The water control component 2 includes an adjusting seat 21, a movable valve sleeve 22, a first elastic member 23 and an elastic switching structure 24.

[0054] The adjusting seat 21 is installed in the pressure chamber 16 and is provided with a channel 21A connecting the blocking component 3 and the pressure chamber 16. It should be noted here that a first pressure stabilizing chamber 31 is formed between the adjusting seat 21 and the base 12, and a sealing lip piece 32 of the blocking component 3 is installed in the first pressure stabilizing chamber 31 to cover the water inlet of the water outlet part 15.

[0055] The movable valve sleeve 22 moves in the pressure chamber 16 under the action of water pressure and the first elastic member 23, and a acting surface 221 cooperating with the elastic switching structure 24 is formed on the movable valve sleeve 22. It should be noted that in this embodiment, the acting surface 221 is arranged in a wavelike shape and concave parts 221A and 221B (that is, docking positions) are formed thereon. When an abutting member 241 of the elastic switching structure 24 is inserted into the concave parts 221A and 221B, a movable frame 242 is driven to swing, and then the channel 21A blocked by the movable frame 242 is opened.

[0056] Two ends of the first elastic member 23 act on the adjusting seat 21 and the movable valve sleeve 22 respectively.

[0057] The elastic switching structure 24 is installed on the adjusting seat 21 and abuts and cooperates with the acting surface 221 of the movable valve sleeve 22. As the position of the movable valve sleeve 22 in the pressure chamber 16 changes, the channel 21A is opened and closed at least twice. It should be noted here that in order to ensure the stability and controllability when the rim water channel and the main flushing water channel are opened in sequence, the blocking component 3 is configured to open the water outlet part 15 in sequence only when the pressure chamber 16 is filled with water and the switch component 4 is in a closed state, the fluctuation generated by the change of the water inlet pressure of the water inlet part 14 can be prevented

[0058] In addition, the elastic switching structure 24 in this embodiment includes the movable frame 242, the abutting member 241 and a second elastic member 243.

[0059] The movable frame 242 is swingably installed on the base 12 through a hinge member 242A. One side of the movable frame 242 is configured to open and close the channel 21A, and the other side of the movable frame 242 acts between the adjusting seat 21 and the movable valve sleeve 22 through the cooperation between the abutting member 241 and the second elastic member 243, making the abutting member 241 abut against the acting surface 221. That is, the movable frame 242 is installed on the adjusting seat 21 by the lever principle, wherein the movable valve sleeve 22 moves along the pressure chamber 16, and the wave-shaped acting surface 221 on the inner wall of the movable valve sleeve 22 contacts and cooperates with the abutting member 241, making the abutting member 241 swing (swing like a lever) according to the position change on the acting surface 221, thus driving the movable frame 242 to open or block the channel 21A.

[0060] The blocking component 3 opens and closes the water inlet of the water outlet part 15 according to the pressure change of the pressure chamber 16.

[0061] The blocking component 3 includes the sealing lip piece 32 for covering the water inlet of the water outlet part 15. A first pressure stabilizing chamber 31 is formed between the adjusting seat 21 and the water outlet part 15 through the separation of the sealing lip piece 32, and the first pressure stabilizing chamber 31 is connected to the channel 21A of the adjusting seat 21 wherein, the sealing lip piece 32 is provided with a drainage hole 31A connecting the first pressure stabilizing chamber 31 and the water inlet part 14. The water outlet part 15 is blocked by utilizing the first pressure stabilizing chamber 31. Under the static pressure state, the pressures on both sides of the sealing lip piece 32 are the same, and the water outlet part 15 thus can be blocked stably.

[0062] The switch component 4 is installed on the housing body 11 for realizing and cutting off the connection between the water inlet part 14 and the pressure chamber 16.

[0063] The switch component 4 includes a sealing diaphragm 41, a second pressure stabilizing chamber 42 and a driving assembly 43.

[0064] The sealing diaphragm 41 is installed in the auxiliary chamber 17 for covering the inlet of the pressure chamber 16, and is provided with a water passing hole B connecting the water inlet part 14 and the second pressure stabilizing chamber 42.

[0065] The driving assembly 43 is actuated by external force to open and close the water passing hole B, changing the pressure on the two end faces of the sealing diaphragm 41 to make the water inlet part 14 and the pressure chamber 16 be connected or disconnected. The driving assembly 43 in this embodiment includes a connecting rod 431, a third elastic member 432 and a deformation member 433. One end of the connecting rod 431 is used for opening and closing the water passing hole B, and the other end thereof is connected to the deformation member 433. The deformation member 433 moves towards the direction of the water passing hole B under the action of air pressure, and drives the connecting rod 431 is to open the water passing hole B, so as to change the pressure on the two end faces of the sealing diaphragm 41; wherein, the elastic member is configured to drive the connecting rod 431 to return to its original position and block the water passing hole B. One of the several drainage channels 18 is connected to the water passing hole B.

[0066] An air pressure switch (not shown in the figure) installed outside the water tank is further provided, and the air pressure switch is hermetically connected to the housing body 11 through an air pipe and acts on the deformation member 433 through air pressure.

[0067] More specifically, the acting surface 221 on the inner wall of the movable valve sleeve 22 is in a wave shape and at least two docking positions (that is, concave parts 221A and 221B) are formed thereon. The movable valve sleeve 22 moves axially, and when the abutting member 241 radially abutted falls on the docking positions of the acting surface 221, the channel 21A is opened or blocked, and the blocking component 3 is driven to open or block the water outlet part 15.

[0068] More specifically, in order to improve the sealing performance and frictional resistance, a V-shaped sealing member 6 is also provided. The sealing member 6 is sleeved on the outer circumferential groove of the movable valve sleeve 22 and acts on the inner side of the pressure chamber 16, so that the movable valve sleeve 22 can axially and hermetically move in the pressure chamber 16, thus ensuring that the movable valve sleeve 22 moves more stably in the pressure chamber 16 and the entire structure will not fail due to water leakage.

[0069] Moreover, several drainage channels 18, namely a first drainage channel 18A, a second drainage channel 18B and a third drainage channel 18C are provided.

[0070] The first drainage channel 18A is used for discharging the water flow in the auxiliary chamber 17. When the switch assembly is opened, water in the auxiliary chamber 17 and the second pressure stabilizing chamber 42 is discharged, so as to realize the connection between the water inlet part 14 and the pressure chamber 16.

[0071] The second drainage channel 18B is connected to the channel 21A for discharging the water flow in the first pressure stabilizing chamber 31. In this way, when the channel 21A is open, the water flow in the first pressure stabilizing chamber 31 is discharged from the housing body 11, thus changing the pressure on the sealing lip piece 32 to smoothly open the water outlet part 15.

[0072] The third drainage channel 18C is connected to the pressure relief chamber for discharging the water flow in the pressure relief chamber. Only when the third drainage channel 18C is opened, can the first elastic member 23 slowly push the movable valve sleeve 22 to move slowly; otherwise, the movable valve sleeve 22 cannot move. For ensuring the stability of the entire structure and preventing the entire structure from being interfered by external water pressure, a flow regulating valve 7 is also provided in the third drainage channel 18C for adjusting the water outlet area of the third drainage channel 18C to regulate the flow velocity of the pressure chamber 16.

[0073] During the assembly and actual use,

[0074] As shown in FIGS. 1 to 8, a toilet flushing assembly equipped with a flushing water supply control valve is taken as an example for illustration in this embodiment, which includes the following parts: at least two triangular valves (not shown in the FIG.), a water pump 9, a waterway switching valve 8, a connecting pipe 91, a housing body 11, a base 12, a top cover 13, a water inlet part 14, a water outlet part 15, a pressure chamber 16, an auxiliary chamber 17, several drainage channels 18, an adjusting seat 21, a movable valve sleeve 22, a first elastic member 23, an elastic switching structure 24, an abutting member 241, a movable frame 242, a second elastic member 243, a sealing lip piece 32, a blocking component 3, a switch component 4, a sealing diaphragm 41, a second pressure stabilizing chamber 42, a driving assembly 43, a V-shaped sealing member 6, a flow regulating valve 7 and an air pressure switch (not shown in the figure).

[0075] During assembly:

[0076] (1) Snapping the injection-molded adjusting seat 21 onto the movable frame 242 to allow the movable frame 242 to swing relative to the adjusting seat 21; then installing the abutting member 241 on one side of the movable frame 242. It should be noted that the abutting member 241 is movable, so that the abutting member 241 can still maintain an abutting state while the movable frame 242 is swinging like a lever. Of course, the abutting member 241 and the movable frame 242 can also be integrally formed, and the abutting function of the abutting member 241 can also be achieved. However, by setting the abutting member 241 to be movable, a higher reliability and precision can be guaranteed.

[0077] Subsequently, a sealing plug corresponding to the channel 21A is installed at the other end of the same side of the movable frame 242; then making two ends of the second elastic member 243 (i.e., a spring) abut against the adjusting seat 21 and the abutting member 241 respectively.

[0078] (2) After the V-shaped sealing member 6 is sleeved on the outer periphery of the movable valve sleeve 22, the first elastic member 23 (spring) is then installed in the movable valve sleeve 22. It should be noted that the elastic force of the first elastic member 23 is set at the factory to ensure the speed of the first elastic member 23 for pushing the movable valve sleeve to move at later stage.

[0079] (3) The movable valve sleeve 22 and the adjusting seat 21 then are hermetically stalled together from the opening of the pressure chamber 16.

[0080] (4) The sealing lip piece 32 is covered on the water inlet of the water outlet part 15 on the base 12 with the lip edge of the sealing lip piece 32 abutting between the adjusting seat 21 and the base 12. At this moment, the water inlet part 14, the water outlet part 15 and the first pressure stabilizing chamber 31 are formed by the separation of the sealing lip piece 32, and water flow enters the first pressure stabilizing chamber 31 from the drainage hole 31A of the sealing lip piece 32. After assembly, the housing body 11 and the base 12 are fixed.

[0081] (5) The sealing diaphragm 41 and the connecting rod 431 connected to the deformation member 433 are firstly installed at the upper position (i.e., the top) of the housing body 11. One end of the connecting rod 431 is located in one end, close to the sealing diaphragm 41, of the second pressure stabilizing chamber 42, and the other end of the connecting rod 431 is connected to the deformation member 433 after being sleeved with the third elastic member 432 (spring). It should be noted that after the top cover 13 is covered, a certain gap, just like an air cavity, is formed between the top cover 13 and the deformation member 433. As long as pressurized gas is injected into the gap, the deformation member 433 can deform accordingly, and then drive the connecting rod 431 move downward to open the water passing hole B. The reset is driven and realized by the third elastic member 432 and can be achieved quickly with the assistance of the deformation member 433 and the third elastic member 432.

[0082] (6) When the top cover 13 and the housing body 11 are fixed, the air pressure valve (existing technology) is fixed on the toilet and connected to the top cover 13 through an air pipe. The air pressure generated by pressing the air pressure valve can drive the deformation member 433 to deform.

[0083] (7) The assembly of the entire flushing water supply control valve is then completed. Subsequently, the municipal water inlet pipe (not shown in the figure), the flushing water supply control valve and the water tank refill valve are connected through a three-way valve. Water from the municipal water inlet pipe enters the water tank refill valve for water refilling and water storage respectively, and at the same time enters the water inlet part 14. However, at this moment, the flushing water supply control valve is not open, and the water flow can only achieve water refilling function.

[0084] (8) The water pump 9, the flushing water supply control valve and the waterway switching valve 8 are also connected through a three-way valve and a connecting pipe 91. A one-way valve is installed in the connecting pipe 91 to prevent the mutual influence of the water flow when the water pump 9 and the flushing water supply control valve work separately.

[0085] (9) The waterway switching valve 8 is connected to the rim water channel 51 and the main flushing water channel 52 of the toilet (toilet bowl) to complete the assembly of the entire flushing assembly.

[0086] During use:

[0087] (1) As shown in FIG. 8, when the water pump 9 is in a power on state, water drew by the water pump 9 from the water tank enters the waterway switching valve 8 and supplies to the rim water channel 51 first. After a certain period of time of flushing, the water pump 9 is turned off, and the impact of water pressure to the waterway switching valve 8 is disappeared, the waterway switching valve 8 drops down and the main flushing water channel 52 is switched to open. Then the water pump 9 is powered on again, and the water flow at this time enters the main flushing water channel 52 for flushing. After a certain period of time of flushing, the water pump 9 is powered off and the waterway switching valve 8 returns to the original state again.

[0088] (2) In the event of a power outage (without electricity), the water pump 9 cannot work normally at this time. As shown in FIG. 5, consumers are only required to press the air pressure valve (existing technology) once, and a stream of pressurized gas will be introduced into the air pressure chamber through the air pipe, pushing the deformation member 433 to move downward and overcome the spring force of the third elastic member 432, and after the connecting rod 431 is driven to move downward, the water passing hole B is opened. At this moment, the water flow in the second pressure stabilizing chamber 42 is discharged from the water passing hole B and the second drainage channel 18B. The pressure on one side, corresponding to the second pressure stabilizing chamber 42, of the sealing diaphragm 41 is small, while the water flow pressure at the water inlet part 14 is large, pushing the sealing diaphragm 41 rapidly and making the water flow flow into the pressure chamber 16 rapidly, and the movable valve sleeve 22 is pushed to the bottom quickly. This process lasts a very short time, and the movable valve sleeve 22 reaches the inner bottom of the pressure chamber instantaneously. When the pressure from the consumers on the air pressure valve is disappeared, the deformation member resets quickly with the assistance of the deformation member 433 and the third elastic member 432, and the water passing hole B is thus being closed. At this moment, the second pressure stabilizing chamber 42 is full of water, and the pressure chamber 16 is sealed by the sealing diaphragm 41. At this moment, the pressure chamber 16 is filled with water, as shown in FIG. 6.

[0089] (3) As shown in FIG. 2 and FIG. 7, the top side of the pressure chamber 16 is provided with a third drainage channel 18C. The water passing area of the third drainage channel 18C is small. Under the action of the first elastic member 23, the water flow slowly discharges from the third drainage channel 18C, and the movable valve sleeve 22 starts to move upward. During the upward movement process, the internal wavelike acting surface 221 of the movable valve sleeve 22 cooperates with the abutting member 241. When the abutting member 241 falls into the concave part 221A (that is, the docking position), the channel 21A is open (of course, it can also be configured in an opposite way, that is, when the abutting member 241 falls into the concave part 221A, the channel 21A is closed. Both of the two configurations shall fall within the protection scope). The water flow in the first pressure stabilizing chamber 31 flows in from the channel 21A and flows out from the first drainage channel 18A. After the first pressure stabilizing chamber 31 is depressurized, the water flow from the water inlet part 14 pushes open the sealing lip piece 32, enters the waterway switching valve 8 from the water outlet part 15, and then enters the rim water channel 51 from the waterway switching valve 8 for flushing.

[0090] (4) As the movable valve sleeve 22 is moving upward continuously and slowly until the abutting member 241 leaves the concave part 221A, the movable frame 242 at this point swings and resets to block the channel 21A. The water flow from the water inlet part 14 enters the first pressure stabilizing chamber 31 again. After the first pressure stabilizing chamber 31 is filled with water, the water pressures on the two sides of the sealing lip piece 32 are the same, and the water outlet part 15 is sealed by the sealing lip piece 32 again. At this moment, the waterway switching valve 8 drops down after losing the impact of the water flow, and during the dropping down process, the main flushing water channel 52 is switched to an open state and the rim water channel 51 is switched to a closed state.

[0091] (5) The movable valve sleeve 22 keeps moving upward slowly until the abutting member 241 falls into another concave part 221B (another docking position), and the movable frame 242 swings again to open the channel 21A. Similarly, the sealing lip piece 32 is opened to supply water to the waterway switching valve 8 and fulfill the flushing function of the main flushing water channel 52. The movable valve sleeve 22 keeps moving upward until the abutting member 241 moves out of the concave part 221B, and then water outflow is stopped.

[0092] During this process, the water flow directly enters from the municipal pipeline. However, the municipal pipeline only supplies water, and even there is water pressure change in the municipal pipeline, the movement of the entire movable valve sleeve 22 will not be affected. The whole process is stable and constant. Once the elastic value of the first elastic member 23, the water passing area of the third drainage channel 18C, and the distance between the concave parts 221A and 221B (that is, the docking positions), etc. are properly set, sequential and constant intermittent water supply can be achieved.

[0093] The present disclosure provides a flushing water supply control valve used in a power-off state and a toilet flushing assembly. The structure is simple, easy to manufacture and implement and cost saving. The flushing water supply control valve of the present disclosure breaks through the drawback that the traditional mechanical valve and electronically controlled valve cannot be used complementarily and realizes the flushing function in a power-off state. The flushing function here does not simply refer to turn on / off the flushing function, but a flushing function integrated with the following multiple effects: Firstly, sequential flushing of the rim water channel and the main flushing water channel can be realized by one-key activation (one press), that is to say, the sequential flushing of the rim water channel and the main flushing water channel can be realized by pressing once, without the need of multiple presses, a good user experience is provided. Secondly, on the basis of one-key pressing, the flushing time (that is, the amount of flushed water) can be well controlled. When the switch component is open, the water flow impacts the movable valve sleeve to the bottom of the pressure chamber, and the connection between the water inlet part and the pressure chamber is quickly cut-off. At this moment, the water flow in the pressure chamber flows out from the drainage channel, and under the action of the first elastic member, the water in the pressure chamber is slowly squeezed out. During this process, the movable valve sleeve is slowly moving upward, and the acting surface cooperates with the elastic switching structure to open the channel, and then the blocking component is driven to open to let the water flow out from the water outlet part, thus realizing the flushing of the rim water channel. As the movable valve sleeve moves upward, the elastic switching structure is closed due to the position change of the acting surface. At this moment, the position of the waterway switching valve is switched, and the main flushing water channel is switched to an open state to realize the flushing function. And as the movable valve sleeve continues to move upward, the elastic switching structure is changed to open the channel again, and then the water outlet part is open again to supply water to the main flushing water channel. A very important improvement here is that the flushing time and the amount of flushed water of the entire rim water channel and the main flushing water channel are set according to the position change of the movable valve sleeve, and the elastic force of the first elastic member dominates the speed of the position change of the movable valve sleeve. The elastic force of the first elastic member is relatively constant and stable, and the entire flushing time is uniformly controlled. The situation where the flushing time and the amount of flushed water of the rim water channel each time is different from that of the main flushing water channel in the existing structure will not occur, because the existing structure is based on the water pressure, but the water pressure is fluctuating constantly. When the water pressure is high, the flushing time is long, and when the water pressure is low, the flushing time is short. Quantification cannot be realized and a constant flushing time cannot be guaranteed, and the user experience is extremely poor. The intermittent opening and closing method of the present disclosure is no longer related to the inlet water pressure, the control is constant and the flushing time (water amount) for each time is substantively uniform. Furthermore, the entire structure is small in volume and can operate without the need of the components of the water inlet float bowl. In summary, the flushing water supply control valve of the present disclosure has simultaneously realizes the following advantages: small in volume, activating the sequential flushing of the rim water channel and the main flushing water channel by just pressing once, constantly controlling the flushing time and the water amount each time, and can be used smoothly in a power-off state and a good user experience is provided. The design concept and structure of the whole product are very ingenious

[0094] The descriptions in the foregoing specification and embodiments are used to explain the scope of the present disclosure, but do not constitute a limitation on the scope of the present disclosure.

Claims

1. A flushing water supply control valve used in a power-off state comprising a housing, a water control component, a blocking component and a switch component,wherein the housing is provided with a water inlet part, a water outlet part, a pressure chamber, an auxiliary chamber and several drainage channels, the auxiliary chamber is provided for accommodating the switch component and connecting and disconnecting the pressure chamber and the water inlet part, the pressure chamber is provided for accommodating the water control component, the blocking component is installed at a position between a water inlet position of the water outlet part and the pressure chamber, and pressure relief and water drainage in the pressure chamber and the auxiliary chamber are respectively realized by the drainage channels;the water control component comprises an adjusting seat, a movable valve sleeve, a first elastic member and an elastic switching structure, the adjusting seat is installed in the pressure chamber and is provided with a channel connecting the blocking component and the pressure chamber, the movable valve sleeve moves in the pressure chamber under the action of water pressure and the first elastic member, and an acting surface cooperating with the elastic switching structure is formed on the movable valve sleeve, two ends of the first elastic member act on the adjusting seat and the movable valve sleeve respectively, the elastic switching structure is installed on the adjusting seat and abuts and cooperates with the acting surface of the movable valve sleeve, and as a position of the movable valve sleeve in the pressure chamber changes, the channel is opened and closed at least twice;the blocking component opens and closes the water inlet of the water outlet part according to the pressure change of the pressure chamber;the switch component is installed on the housing and is used for fulfilling and cutting-off the connection between the water inlet part and the pressure chamber.

2. The flushing water supply control valve used in a power-off state as claimed in claim 1, wherein, when the pressure chamber is filled with water and the switch component is in a closed state, the blocking component sequentially opens the water outlet part.

3. The flushing water supply control valve used in a power-off state as claimed in claim 2, wherein the elastic switching structure includes a movable frame, an abutting member and a second elastic member, the movable frame is swingably installed on the adjusting seat through a hinge member provided on the movable frame, one side of the movable frame is used for opening and closing the channel, and another other side of movable frame cooperates with the second elastic member through the abutting member and acts between the adjusting seat and the movable valve sleeve to make the abutting member abut against the acting surface, wherein the movable valve sleeve moves along the pressure chamber with the acting surface on an inner wall of the movable valve sleeve contacting and cooperating with the abutting member, thus making the abutting member swing according to the position change of the abutting member on the acting surface and driving the movable frame to open and close the channel.

4. The flushing water supply control valve used in a power-off state as claimed in claim 3, wherein the acting surface is arranged in a wave shape and at least two docking positions are formed thereon, wherein, when the movable valve sleeve axially moves and the abutting member radially abutted falls on the at least two docking positions formed on the acting surface, the channel is opened or blocked, and the blocking component is thus driven to open or block the water outlet part.

5. The flushing water supply control valve used in a power-off state as claimed in claim 4 further comprising a V-shaped sealing member sleeved on an outer circumferential groove of the movable valve sleeve and acting on an inner side of the pressure chamber to make the movable valve sleeve axially and hermetically move in the pressure chamber.

6. The flushing water supply control valve used in a power-off state as claimed in claim 4, wherein the blocking component includes a sealing lip piece for covering the water inlet of the water outlet part, a first pressure stabilizing chamber is formed between the adjusting seat and the water outlet part by separation of the sealing lip piece, and the first pressure stabilizing chamber is connected to the channel of the adjusting seat, wherein the sealing lip piece is provided with a drainage hole connecting the first pressure stabilizing chamber and the water inlet part.

7. The flushing water supply control valve used in a power-off state as claimed in claim 4, wherein the switch component includes a sealing diaphragm, a second pressure stabilizing chamber and a driving assembly, and the sealing diaphragm is installed in the auxiliary chamber and covers an inlet of the pressure chamber, and is provided with a water passing hole connecting the water inlet part and the second pressure stabilizing chamber, the driving assembly is actuated by external force to open and close the water passing hole, changing pressure on two end faces of the sealing diaphragm to make the water inlet part and the pressure chamber be connected or disconnected.

8. The flushing water supply control valve used in a power-off state as claimed in claim 7, wherein the driving assembly includes a connecting rod, a third elastic member and a deformation member, an end of the connecting rod is used for opening and closing the water passing hole, and another other end is connected to the deformation member, the deformation member moves towards a direction of the water passing hole under an action of air pressure and drives the connecting rod to open the water passing hole to change the pressure on the two end faces of the sealing diaphragm, wherein the elastic member is used to drive the connecting rod to return to the original position and block the water passing hole, and the drainage channels are connected to the water passing hole.

9. The flushing water supply control valve used in a power-off state as claimed in claim 8 further comprising an air pressure switch installed outside the water tank and hermetically connected to the housing through an air pipe and acting on the deformation member through air pressure.

10. The flushing water supply control valve used in a power-off state as claimed in claim 1, wherein the drainage channels comprises a first drainage channel, a second drainage channel and a third drainage channel, the first drainage channel is used for discharging the water flow in the auxiliary chamber, the second drainage channel is connected to the channel for discharging the water flow in the first pressure stabilizing chamber, and the third drainage channel is connected to the pressure relief chamber for discharging the water flow in the pressure relief chamber.

11. The flushing water supply control valve used in a power-off state as claimed in claim 10, wherein a flow regulating valve is also installed in the third drainage channel for adjusting a water outlet area of the third drainage channel to regulate a discharge speed.

12. A toilet flushing assembly comprising a triangle valve, a water pump, a waterway switching valve, a connecting pipe and the flushing water supply control valve as claimed in claim 1, wherein the water inlet part of the flushing water supply control valve is connected to the municipal pipeline, and the water outlet part is connected to the triangle valve, the water pump, the flushing water supply control valve and the waterway switching valve are respectively connected to the triangle valve, so that the water pump and the flushing water supply control valve intermittently supply water to the waterway switching valve.

Images