Flushing mechanisms and bathroom equipment

Abstract

This invention relates to a flushing mechanism and bathroom fixture. The flushing mechanism includes a piston assembly, a main housing, a secondary housing, and an adjusting assembly. The piston assembly has a reset flow channel. The main housing is connected to the piston assembly and cooperates with the piston assembly to form a drive chamber with a variable space size. The secondary housing is also connected to the piston assembly and cooperates with the piston assembly to form a driven chamber with a variable space size. When the drive chamber expands, the space of the driven chamber can contract under the force transmitted by the drive chamber. The adjusting assembly is connected to the piston assembly and can control the opening and closing of the reset flow channel; the reset flow channel can connect the driven chamber and the drive chamber, allowing fluid in the drive chamber to flow into the driven chamber. This helps to save the volume occupied by the flushing mechanism and facilitates the complete integration of the flushing mechanism into the internal space of the main body.

Description

Technical Field

[0001] This invention relates to the field of bathroom equipment technology, and in particular to a flushing mechanism and bathroom equipment. Background Technology

[0002] As a bathroom fixture, smart toilets are developing in a similar trend to mobile phones, with the toilet seat becoming thinner and thinner, almost completely flat, to improve aesthetics and save indoor space.

[0003] To reduce the overall height of the toilet, the flushing mechanism needs to be fully housed within the toilet bowl's interior space. Since the flushing mechanism has different chambers, fluid transfer between these chambers is typically done through external pipes. This results in complex external piping and increases the overall size of the flushing mechanism, making it difficult to fully integrate it into the toilet bowl's interior space. This hinders space-saving features like smart toilets. Summary of the Invention

[0004] Therefore, it is necessary to provide a flushing mechanism and bathroom equipment to address the problem of increased external volume caused by fluid transfer between the cavities of the flushing mechanism through external pipes.

[0005] A flushing mechanism, comprising:

[0006] The piston assembly is equipped with a reset flow channel;

[0007] A main side housing is connected to the piston assembly, and the main side housing is used to cooperate with the piston assembly to form a drive chamber with a variable space size;

[0008] The secondary housing is connected to the piston assembly, and the secondary housing cooperates with the piston assembly to form a driven cavity with a variable space size; when the drive cavity expands, the space of the driven cavity can contract under the force transmitted by the drive cavity; and

[0009] An adjustment component is connected to the piston assembly and is capable of controlling the opening and closing of the reset flow channel; the reset flow channel is capable of communicating the driven chamber with the driving chamber, so that the fluid in the driving chamber flows to the driven chamber.

[0010] The aforementioned flushing mechanism pre-injects fluid into the driven chamber, fully expanding its internal space while simultaneously pre-emptively emptying the drive chamber, leaving it in a contracted state. When the fluid supply source, generating external driving force, injects fluid into the contracted drive chamber, the chamber expands due to the fluid filling. This expansion transmits the driving force to the transmission assembly, which compresses the driven chamber, expelling the stored fluid to the main body of the bathroom fixture. When the driven chamber needs replenishment, the reset flow channel, passing through the piston assembly, is opened by the regulating assembly, allowing fluid from the drive chamber to flow into the driven chamber, thus replenishing it. Because the drive and driven chambers are directly connected via the reset flow channel through the piston assembly, there is no need for external pipes outside the main or secondary housing, saving space and allowing the flushing mechanism to be fully housed within the main body.

[0011] In one embodiment, the piston assembly includes an active plate, a transition rod, and a driven plate connected in sequence; the active plate cooperates with the main side housing to form the drive cavity; the driven plate cooperates with the secondary side housing to form the driven cavity; and the reset flow channel is sequentially opened on the active plate, the transition rod, and the driven plate.

[0012] In one embodiment, the adjusting assembly includes a flow-blocking element and a latch plate connected to the piston assembly; the flow-blocking element is movable relative to the piston assembly to have a first state blocking the reset flow channel and a second state allowing the reset flow channel to flow freely; the latch plate is capable of locking the flow-blocking element in the first state and the second state.

[0013] In one embodiment, the flow-blocking member corresponds to the port of the reset channel, and at least one of the flow-blocking member and the buckle plate has a flow-blocking side slope; in the first state, the buckle plate and the flow-blocking member interact through the flow-blocking side slope to press the flow-blocking member against the piston assembly; as the flow-blocking member moves away from the reset channel, the buckle plate can move relative to the flow-blocking member along the flow-blocking side slope until it is locked between the reset channel and the flow-blocking member, so that the flow-blocking member is in the second state.

[0014] In one embodiment, the adjusting assembly further includes a push rod that acts on the throttling member when the driven cavity contracts to a predetermined degree, causing the throttling member to move relative to the piston assembly and switch from the first state to the second state.

[0015] In one embodiment, the push rod extends along the reset flow channel, and one end of the push rod is connected to the flow-blocking member, and the other end of the push rod is used to abut against the inner wall of the secondary housing when the driven cavity contracts to a predetermined degree; or, the push rod extends along the reset flow channel, and one end of the push rod is connected to the secondary housing, and the other end is used to abut against the flow-blocking member when the driven cavity contracts to a predetermined degree.

[0016] In one embodiment, the adjustment assembly further includes a main side protrusion and a flow-blocking elastic element; when the drive cavity contracts to a predetermined degree, the main side protrusion acts on the buckle plate to unlock the flow-blocking element, and the flow-blocking elastic element acts on the flow-blocking element to switch the flow-blocking element from the second state to the first state.

[0017] In one embodiment, there are two buckles, which are slidably connected to the piston assembly; in the second state, the two buckles can be locked between the reset channel and the flow cut-off member; as the drive cavity contracts, the main side protrusion can force the two buckles to move away from each other and unlock the flow cut-off member.

[0018] In one embodiment, the flow-blocking elastic element applies an elastic force toward the piston assembly to the flow-blocking element, thereby forcing the flow-blocking element to switch from the second state to the first state.

[0019] A bathroom fixture includes: a main body and a flushing mechanism; the main body is provided with a liquid tank, and the bottom of the liquid tank is provided with a drain outlet, wherein fluid discharged from the driven cavity is output to the liquid tank or the drain outlet of the main body to flush the inner wall of the liquid tank or to discharge dirt from the drain outlet. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of a bathroom device according to an embodiment of the present invention;

[0021] Figure 2 for Figure 1 A diagram showing the connection relationships between the flushing mechanism, main triggering mechanism, main control valve, secondary triggering mechanism, and secondary control valve.

[0022] Figure 3 for Figure 2 Diagram showing the connection relationship between the main-side triggering mechanism and the main-side control valve;

[0023] Figure 4 for Figure 2 A schematic diagram showing the interaction between the main triggering mechanism and the opening / closing component;

[0024] Figure 5 for Figure 2A schematic diagram of the secondary triggering mechanism in the middle;

[0025] Figure 6 for Figure 2 A schematic diagram of the flushing mechanism in the middle;

[0026] Figure 7 for Figure 6 An enlarged schematic diagram of circle A of the flushing mechanism shown;

[0027] Figure 8 for Figure 6 A schematic diagram showing the fit between the buckle plate and the main side protrusion in the flushing mechanism;

[0028] Figure 9 for Figure 6 A schematic diagram of the opening and closing components in the diagram.

[0029] Figure label:

[0030] 100. Bathroom fixtures; 20. Body; 21. Liquid tank; 22. Drain outlet; 23. Washing water path; 231. Liquid outlet; 24. Jet water path; 25. Siphon pipe; 40. Flushing mechanism; 41. Drive assembly; 411. Main side housing; 413. Main side opening; 412. Drive cavity; 42. Driven assembly; 421. Secondary side housing; 423. Secondary housing section; 424. Extension section; 422. Driven cavity; 425. Drain outlet; 43. Piston assembly; 431. Reset flow channel; 433. Active plate; 434. 435. Driven plate; 44. Adjusting assembly; 441. Flow-blocking component; 441a / 442a. Flow-blocking side slope; 441b. Flow-blocking elastic component; 441c. Flow-blocking support block; 442. Buckle plate; 442b. Buckling elastic component; 443. Top rod; 446. Stop block; 444. Secondary side protrusion; 445. Main side protrusion; 447. Unfastening inclined surface; 45. Opening and closing assembly; 451. Opening and closing valve body; 451a. Unsealing chamber; 451b. Sealing chamber; 451c. First liquid port; 451d. Second liquid port; 451e, Third liquid port; 451f, Fourth liquid port; 451g, Limiting groove; 451h, First drain port; 451i, Second drain port; 452, Opening / closing valve core; 453, Cover plate; 454, Push rod; 455, First pressure relief valve; 456, Second pressure relief valve; 50, Main side triggering mechanism; 51, First base plate; 511, First operating plate; 512, First directional component; 513, First position detection component; 52, First conduit; 521, Second conduit; 522, First sleeve; 53, Third conduit; 1. Fourth conduit; 532. Second sleeve; 60. Main control valve; 61. First main channel; 62. First pressurizing cylinder; 63. First pilot port; 64. First movable component; 70. Secondary triggering mechanism; 71. Second base plate; 711. Second operating plate; 712. Second directional component; 713. Second position detection component; 72. Fifth conduit; 721. Sixth conduit; 722. Third sleeve; 73. Seventh conduit; 731. Eighth conduit; 732. Fourth sleeve; 80. Secondary control valve; 81. Secondary main channel. Detailed Implementation

[0031] To make the above-mentioned objects, features, and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of the present invention. However, the present invention can be practiced in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0032] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0033] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0034] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0035] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that they are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0036] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. When an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0037] The technical solutions provided by the embodiments of the present invention are described below with reference to the accompanying drawings.

[0038] This invention provides a bathroom fixture 100.

[0039] Please see Figure 1 The bathroom fixture 100 includes a flushing mechanism 40 and a body 20 connected to the flushing mechanism 40. The body 20 has a liquid tank 21, and a drain outlet 22 is provided at the bottom of the liquid tank 21. In one embodiment, the bathroom fixture 100 is a toilet, but it can also be a washbasin, bathtub, or other equipment that requires flushing. The body 20 may have a washing water path 23 to guide the fluid in the flushing mechanism 40 to the upper side of the liquid tank 21, so that the fluid can evenly flush the inner wall of the liquid tank 21 from top to bottom. The body 20 may also have a jet water path 24 and a siphon pipe 25 connected to the drain outlet 22. The jet water path 24 guides the fluid in the flushing mechanism 40 to the liquid tank 21 and discharges the waste in the liquid tank 21 through the drain outlet 22 and the siphon pipe 25.

[0040] More specifically, the washing water channel 23 discharges fluid through the liquid outlet 231 to the inner wall of the upper side of the liquid pool 21 to clean the inner wall of the liquid pool 21. The main body 20 is provided with a receiving cavity for accommodating the flushing mechanism 40.

[0041] In some implementations, such as Figure 2 As shown, the bathroom fixture 100 also includes a main control valve 60 connected to the flushing mechanism 40, a main triggering mechanism 50 connected to the main control valve 60, a secondary control valve 80 connected to the flushing mechanism 40, and a secondary triggering mechanism 70 connected to the secondary control valve 80.

[0042] The flushing mechanism 40 has a drive chamber 412 and a driven chamber 422 with variable space size. When the drive chamber 412 expands, it causes the driven chamber 422 to contract through transmission, and the change in space of the driven chamber 422 is greater than the change in space of the drive chamber 412. The main triggering mechanism 50 is used to control the flow direction of the first pilot water flow. The main control valve 60 is used to control the opening and closing of the flow channel between the drive chamber 412 and the fluid supply source under the feedback of the first pilot water flow, so as to control the expansion of the drive chamber 412. The secondary triggering mechanism 70 is used to control the flow direction of the second pilot water flow. The secondary control valve 80 is used to control the opening and closing of the flow channel between the driven chamber 422 and the fluid supply source under the feedback of the second pilot water flow, so as to replenish fluid to the driven chamber 422. Specifically, the flushing mechanism 40 also has a driven chamber 422 connected to the drain outlet 425, through which the driven chamber 422 discharges fluid to the body 20.

[0043] Please see Figure 2 and Figure 6 Specifically, when the driving cavity 412 expands under the influence of an external driving force, it can transmit the driving force to compress the driven cavity 422, thereby discharging the fluid stored in the driven cavity 422. When the driving cavity 412 expands under the influence of an external driving force, the change in its expansion space is less than the change in its compression space of the driven cavity 422.

[0044] Furthermore, when the main trigger mechanism 50 is activated, it causes the first pilot water flow to flow in the forward direction. This forward flow generates fluid pressure on the main control valve 60, causing it to change from a closed state to a conducting state. The fluid supply source injects fluid into the drive chamber 412 through the main control valve 60, causing the drive chamber 412 to expand and drive the driven chamber 422 to discharge fluid. When the driven chamber 422 drains and contracts to a predetermined extent, the secondary trigger mechanism 70 causes the second pilot water flow to flow in the forward direction. This forward flow generates a driving force on the secondary control valve 80, causing it to change from a closed state to a conducting state. The fluid supply source replenishes fluid to the driven chamber 422 through the secondary control valve 80.

[0045] During operation, the flushing mechanism 40 can pre-inject fluid into the driven chamber 422, fully expanding its internal space, while simultaneously pre-emptively emptying the drive chamber 412, leaving it in a contracted state. When the first pilot water flow drives the main control valve 60, the fluid supply source, generating external driving force, injects fluid into the contracted drive chamber 412, causing it to expand due to the fluid filling. This expansion transmits the driving force to the driven chamber 422, compressing it and discharging the stored fluid into the body 20 of the bathroom fixture 100. Because the spatial change of the driven chamber 422 is greater than that of the drive chamber 412 during expansion, the amount of fluid discharged from the driven chamber 422 is greater than the amount of fluid entering the drive chamber 412, thus increasing the discharged water volume in a short time and improving flushing or sewage removal efficiency. After the driven chamber 422 finishes draining, the secondary triggering mechanism 70 controls the flow direction of the second pilot water flow according to the compression of the driven chamber 422 or the expansion of the drive chamber 412. When the second pilot water flow is injected into the secondary control valve 80, the fluid supply source that generates the driving force replenishes the fluid to the driven chamber 422 in the contracted state. When the driven chamber 422 expands, it compresses the drive chamber 412, allowing the drive chamber 412 to return to the contracted state, thereby realizing the cyclic operation of the flushing mechanism 40.

[0046] In some embodiments, the fluid supply source is the output of a municipal water supply pipeline, and the fluid injected into the drive chamber 412 or the driven chamber 422 is tap water. In other embodiments, the fluid supply source may also be the output of a municipal water supply pipeline after passing through a booster pump, or it may be the pumping output of an external pump body of the bathroom appliance 100 to an external water storage tank.

[0047] In some embodiments, such as Figure 2 As shown, the first pilot water flow or the second pilot water flow comes from the fluid supply source to generate a driving force for the state switching of the main control valve 60 or the secondary control valve 80 by utilizing the fluid pressure of the fluid supply source, thereby avoiding the need to introduce too many power components and reducing the cost of the bathroom equipment 100.

[0048] In some embodiments, the main control valve 60 has a first pressurizing cylinder 62. When a first pilot water flow is injected into the first pressurizing cylinder 62, the main control valve 60 switches to the on state under the force of the first pilot water flow. When the first pilot water flow flows out of the first pressurizing cylinder 62, the main control valve 60 switches to the off state.

[0049] Specifically, such as Figure 2As shown, the output port of the main control valve 60 is used to output fluid to the drive chamber 412. The main control valve 60 is provided with a first main channel 61, and the main control valve 60 is also provided with a first pilot port 63 that connects to the front section of the first main channel 61. The first pilot port 63 is connected to the first pressurizing cylinder 62 by a main trigger mechanism 50. When the first pilot water flow is injected into the first pressurizing cylinder 62, the first pilot port 63 and the first pressurizing cylinder 62 serve as the starting point and ending point of the first pilot water flow, respectively. When the first pilot water flow flows out of the first pressurizing cylinder 62, the first pressurizing cylinder 62 serves as the starting point of the first pilot water flow.

[0050] More specifically, before the first pilot port 63 connects to the first pressurizing cylinder 62, the front and rear sections of the first main channel 61 are isolated by the first movable member 64. When the first pilot port 63 connects to the first pressurizing cylinder 62, the fluid flowing out of the first pilot port 63 enters the first pressurizing cylinder 62 and uses the fluid pressure to push the first movable member 64, thus connecting the front and rear sections of the first main channel 61. This allows the fluid supplied by the fluid supply source to flow along the first main channel 61 and be delivered to the drive chamber 412. More specifically, the front section of the first main channel 61 is connected to the fluid supply source, and the rear section of the first main channel 61 is connected to the output port of the main control valve 60.

[0051] In some embodiments, when the main trigger mechanism 50 is activated, it causes the first pilot water flow to be injected into the first pressurizing cylinder 62.

[0052] Specifically, such as Figure 3 and Figure 4 As shown, the main-side triggering mechanism 50 includes a first conduit 52, a second conduit 521, a first sleeve 522, a first base plate 51, and a first operating plate 511 rotatably connected to the first base plate 51. One end of the first conduit 52 is connected to a first pilot port 63, and one end of the second conduit 521 is connected to a first pressurizing cylinder 62. The other ends of the first conduit 52 and the second conduit 521 are arranged side by side and are housed together in the first sleeve 522.

[0053] Before the start-up operation, the first pressurizing cylinder 62 is in an idle state, while the first operating plate 511 is at a predetermined angle relative to the first base plate 51 and can abut against the first sleeve 522, so that the other end of the first conduit 52 and the other end of the second conduit 521 abut against the inner wall of the first sleeve 522 respectively. Therefore, the inner wall of the first sleeve 522 seals the other end of the first conduit 52 and the second conduit 521 respectively, and the first pilot port 63 is blocked from the first pressurizing cylinder 62.

[0054] During startup, the first operating plate 511 is manually or electrically rotated, changing its position relative to the first base plate 51 to a predetermined angle. At this time, the inner wall of the first sleeve 522 simultaneously separates from the other port of the first conduit 52 and the other port of the second conduit 521, establishing a communication between the other ports of the first conduit 52 and the second conduit 521 through the inner cavity of the first sleeve 522. The first pilot water flow from the first pilot port 63 sequentially passes through the first conduit 52, the inner cavity of the first sleeve 522, and the second conduit 521, and is injected into the first pressurizing cylinder 62. More specifically, since the first pilot port 63 connects to the front section of the first main channel 61, and the front section of the first main channel 61 connects to the fluid supply source, the fluid pressure of the first pilot water flow originates from the fluid supply source. Therefore, the fluid pressure of the fluid supply source itself can be used to drive the main control valve 60 to switch from a closed state to an open state.

[0055] In some embodiments, the main trigger mechanism 50 is also connected to the flushing mechanism 40. When the driven chamber 422 contracts to a predetermined extent, the main trigger mechanism 50 causes the first pilot water flow to flow out from the first pressurizing cylinder 62, so that the main control valve 60 switches to the off state.

[0056] Specifically, such as Figure 2 and Figure 6 As shown, the main trigger mechanism 50 also includes a first position detection element 513 connected to the flushing mechanism 40. More specifically, during the contraction of the driven cavity 422, there are two mutually adjacent and movable partial inner walls within the driven cavity 422. When the driven cavity 422 contracts to a predetermined degree, the fluid within the driven cavity 422 has been fully discharged. Simultaneously, one side of the two mutually adjacent and movable partial inner walls abuts against the first position detection element 513, and the transmission of the first position detection element 513 causes the first operating plate 511 to return to a predetermined angle relative to the first base plate 51. The main trigger mechanism 50 includes a third conduit 53, a fourth conduit 531 connected to the input port of the first pressurizing cylinder 62, and a second sleeve 532. One end of the third conduit 53 is used for discharge, and one end of the fourth conduit 531 is connected to the first pressurizing cylinder 62. The other end of the third conduit 53 and the other end of the fourth conduit 531 are arranged side by side and are jointly housed in the second sleeve 532. When the first operating plate 511 is at a predetermined angle, it abuts against the first sleeve 522 and releases from the second sleeve 532. Simultaneously, the inner wall of the second sleeve 532 moves away from the other end of the third conduit 53 and the other end of the fourth conduit 531, allowing the other ends of the third conduit 53 and the fourth conduit 531 to communicate through the inner cavity of the second sleeve 532. At this time, the first movable member 64, under elastic restoring force, discharges the water from the first pressurizing cylinder 62, forming a first pilot water flow from the first pressurizing cylinder 62. Simultaneously, the first movable member 64 restores its isolation from the first main channel 61.

[0057] Furthermore, the main-side triggering mechanism 50 also includes a first directional member 512, which is connected between the first substrate 51 and the first operating plate 511. The first directional member 512 is used to maintain the angle of the first operating plate 511 relative to the first substrate 51 after the rotation operation. In this embodiment, the first directional member 512 is a compression spring, with one end abutting against the first substrate 51 and the other end abutting near the rotation axis of the first operating plate 511, so that the first directional member 512 is in a compressed state. When the first operating plate 511 is deflected, the deformation direction of the first directional member 512 changes, causing the first operating plate 511 to maintain the angle after the rotation.

[0058] In some embodiments, the secondary control valve 80 has a second pressurizing cylinder. When the second pilot water flow is injected into the second pressurizing cylinder, the secondary control valve 80 switches to the on state under the force of the second pilot water flow. When the second pilot water flow flows out of the second pressurizing cylinder, the secondary control valve 80 switches to the off state.

[0059] Specifically, such as Figure 2 As shown, the output port of the secondary control valve 80 is used to output fluid to the driven chamber 422. The secondary control valve 80 is provided with a second main channel 81, and also with a second pilot port that connects to the front section of the second main channel 81. The secondary triggering mechanism 70 is connected between the second pilot port and the second pressurizing cylinder. When the second pilot water flow is injected into the second pressurizing cylinder, the second pilot port and the second pressurizing cylinder serve as the starting point and ending point of the second pilot water flow, respectively. When the second pilot water flow flows out of the second pressurizing cylinder, the second pressurizing cylinder serves as the starting point of the second pilot water flow.

[0060] More specifically, before the second pilot port connects to the second pressurizing cylinder, the front and rear sections of the second main channel 81 are isolated by the second movable member. When the second pilot port connects to the second pressurizing cylinder, the fluid flowing out of the second pilot port enters the second pressurizing cylinder and uses the fluid pressure to push the second movable member, thus connecting the front and rear sections of the second main channel 81. This allows the fluid supplied by the fluid supply source to flow along the second main channel 81 and be delivered to the driven chamber 422. More specifically, the front section of the second main channel 81 is connected to the fluid supply source, and the rear section of the second main channel 81 is connected to the output port of the secondary control valve 80.

[0061] In some embodiments, the secondary triggering mechanism 70 is also connected to the flushing mechanism 40. When the drive chamber 412 expands to a predetermined extent, the secondary triggering mechanism 70 causes the second pilot water flow to be injected into the second pressurizing cylinder.

[0062] Specifically, such as Figure 5As shown, the secondary triggering mechanism 70 includes a fifth conduit 72, a sixth conduit 721, a third sleeve 722, a second base plate 71, and a second operating plate 711 rotatably connected to the second base plate 71. One end of the fifth conduit 72 is connected to a second pilot port, and one end of the sixth conduit 721 is connected to a second pressurizing cylinder. The other ends of the fifth conduit 72 and the sixth conduit 721 are arranged side by side and are housed together in the third sleeve 722.

[0063] Before the expansion of the drive cavity 412 is completed, the second pressurizing cylinder is in an idle state, while the second operating plate 711 is at a predetermined angle relative to the second base plate 71 and can abut against the third sleeve 722, so that the other end of the fifth conduit 72 and the other end of the sixth conduit 721 abut against the inner wall of the third sleeve 722 respectively. Therefore, the inner wall of the third sleeve 722 blocks the other end of the fifth conduit 72 and the sixth conduit 721 respectively, and the second pilot port is blocked from the second pressurizing cylinder.

[0064] The secondary triggering mechanism 70 also includes a second position detection element 713 connected to the flushing mechanism 40. When the drive cavity 412 expands to a predetermined extent, a portion of the wall forming the drive cavity 412 is directly or indirectly driven by the second position detection element 713, causing the second operating plate 711 to deflect. When the drive cavity 412 expands to the predetermined extent, the second operating plate 711 is deflected by the second position detection element 713, and it rotates relative to the second base plate 71 to another predetermined angle. At this time, the inner wall of the third sleeve 722 simultaneously leaves the other port of the fifth conduit 72 and the other port of the sixth conduit 721, so that the other port of the fifth conduit 72 and the other port of the sixth conduit 721 are connected through the inner cavity of the third sleeve 722. The second pilot water flow from the second pilot port is injected into the second pressurizing cylinder sequentially through the fifth conduit 72, the inner cavity of the third sleeve 722, and the sixth conduit 721. More specifically, since the second pilot port is connected to the front section of the second main channel 81, and the front section of the second main channel 81 is connected to the fluid supply source, the fluid pressure of the second pilot water flow comes from the fluid supply source. Therefore, the fluid pressure of the fluid supply source itself can be used to drive the secondary control valve 80 to switch from the closed state to the open state.

[0065] In some embodiments, when the secondary trigger mechanism 70 expands the driven cavity 422 to a predetermined extent, the secondary trigger mechanism 70 causes a second pilot water flow to flow out from the second pressurizing cylinder.

[0066] During the expansion of the driven cavity 422, the driven cavity 422 has two mutually movable local inner walls. When the driven cavity 422 expands to a predetermined extent, the fluid in the driven cavity 422 is fully replenished. At the same time, one side of the two mutually movable local inner walls abuts against the second position detection member 713, and the second operation plate 711 is restored to a predetermined angle relative to the second base plate 71 by the transmission of the second position detection member 713. The secondary triggering mechanism 70 includes a seventh conduit 73, an eighth conduit 731 communicating with the input port of the second pressurizing cylinder, and a fourth sleeve 732. One end of the seventh conduit 73 is used for discharge, and one end of the eighth conduit 731 is connected to the second pressurizing cylinder. The other end of the seventh conduit 73 and the other end of the eighth conduit 731 are arranged side by side and are housed together in the fourth sleeve 732. When the second operating plate 711 is at a predetermined angle, it abuts against the third sleeve 722 and releases from the fourth sleeve 732. Simultaneously, the inner wall of the fourth sleeve 732 moves away from the other end of the seventh conduit 73 and the other end of the eighth conduit 731, establishing a communication between the other ends of the seventh and eighth conduits 731 through the inner cavity of the fourth sleeve 732. At this time, the second movable member, under elastic restoring force, discharges the water from the second pressurizing cylinder, forming a second pilot water flow from the second pressurizing cylinder. Simultaneously, the first movable member 64 restores its isolation from the second main channel 81.

[0067] Furthermore, the secondary triggering mechanism 70 also includes a second directional member 712, which is connected between the second base plate 71 and the second operating plate 711. The second directional member 712 is used to maintain the angle of the second operating plate 711 relative to the second base plate 71 after switching. In this embodiment, the second directional member 712 is a compression spring, with one end abutting against the second base plate 71 and the other end abutting near the rotation axis of the second operating plate 711, so that the second directional member 712 is in a compressed state. When the second operating plate 711 is deflected, the deformation direction of the second directional member 712 changes, so that the second operating plate 711 maintains the angle after switching.

[0068] In some implementations, such as Figure 6 As shown, the flushing mechanism 40 includes a drive assembly 41, a driven assembly 42, and a piston assembly 43. Specifically, the drive assembly 41 forms a drive cavity 412, and the driven assembly 42 forms a driven cavity 422. A drain outlet 425 is disposed on the driven assembly 42. The piston assembly 43 is disposed between the drive assembly 41 and the driven assembly 42. When the drive cavity 412 expands under the action of a driving force, the drive assembly 41 transmits the driving force to the driven cavity 422 assembly through the piston assembly 43, causing the space of the driven cavity 422 to contract.

[0069] In some implementations, such as Figure 6As shown, the drive assembly 41 includes a main side housing 411 connected to the piston assembly 43, and the main side housing 411 and the piston assembly 43 cooperate to form a drive cavity 412. The main side housing 411 is provided with a main side port 413, through which fluid enters and exits the drive cavity 412.

[0070] In some embodiments, the driven assembly 42 includes a secondary housing 421 connected to the piston assembly 43, and the secondary housing 421 cooperates with the piston assembly 43 to form a driven cavity 422. Figure 6 In the illustrated embodiment, the secondary housing 421 includes a secondary housing portion 423 and an extension 424 connecting the secondary housing portion 423. A driven cavity 422 is formed within the secondary housing portion 423 and the extension 424, and the piston assembly 43 is movably accommodated in the secondary housing portion 423. Specifically, the secondary housing portion 423 cooperates with the piston assembly 43 to form a variable spatial portion of the driven cavity 422.

[0071] Furthermore, a portion of the sidewall of the secondary shell 423 coincides with a portion of the sidewall of the extension 424 at a predetermined edge line. The predetermined edge line passes through the drain outlet 425.

[0072] In some embodiments, the driven component 42 has a flange formed around the drain outlet 425, the flange being used to abut against the cover plate 453. Figure 6 In the embodiment shown, a flange is provided on the extension 424.

[0073] exist Figure 6 In the embodiment shown, the piston assembly 43 includes a drive plate 433, a transition rod 434, and a driven plate 435 connected in sequence. The drive plate 433 cooperates with the main housing 411 to form a drive cavity 412. The driven plate 435 cooperates with the secondary housing 421 to form a driven cavity 422.

[0074] In some embodiments, the piston assembly 43 has a reset flow channel 431. Specifically, the reset flow channel 431 is sequentially formed on the driving plate 433, the transition rod 434, and the driven plate 435. The flushing mechanism 40 also includes an adjustment assembly 44 connected to the piston assembly 43, which controls the opening and closing of the reset flow channel 431. When fluid in the driving chamber 412 needs to flow to the driven chamber 422, the reset flow channel 431 can connect the driven chamber 422 to the driving chamber 412, allowing fluid in the driving chamber 412 to flow to the driven chamber 422.

[0075] When the driven chamber 422 needs to be replenished with water, the reset flow channel 431 passing through the piston assembly 43 is opened by the regulating component 44, allowing the fluid in the drive chamber 412 to flow to the driven chamber 422 through the reset flow channel, so as to replenish the driven chamber 422 with the fluid in the drive chamber 412. Since the drive chamber 412 and the driven chamber 422 are directly connected through the reset flow channel 431 passing through the piston assembly 43, there is no need to set up pipes outside the main housing 411 or the secondary housing 421, which helps to save the volume occupied by the flushing mechanism 40 and facilitates the complete housing of the flushing mechanism 40 within the internal space of the main body 20.

[0076] In some implementations, such as Figure 7 As shown, the adjusting assembly 44 includes a flow-blocking member 441 connected to the piston assembly 43 and a retaining plate 442 connected to the piston assembly 43. The flow-blocking member 441 is movable relative to the piston assembly 43 to have a first state of blocking the reset flow channel 431 and a second state of allowing the reset flow channel 431 to flow freely. The retaining plate 442 can lock the flow-blocking member 441 in the first state and the second state. Specifically, when the drive cavity 412 expands, the retaining plate 442 is used to lock the flow-blocking member 441 in the first state, so that the flow-blocking member 441 blocks the port of the reset flow channel 431. Thus, when fluid is injected into the drive cavity 412, the increase in the volume of the injected fluid can be converted into the spatial expansion of the drive cavity 412, preventing the fluid in the drive cavity 412 from overflowing from the reset flow channel 431 and affecting the expansion efficiency of the drive cavity 412. When water is added to the driven cavity 422, the buckle plate 442 is used to lock the flow cut-off member 441 in the second state and open the port of the blockage reset flow channel 431. When the driven cavity 422 expands, the fluid in the drive cavity 412 flows to the driven cavity 422 through the reset flow channel 431.

[0077] In some embodiments, the flow cutter 441 corresponds to the port of the reset channel 431, and at least one of the flow cutter 441 and the retaining plate 442 has a flow-cutting side ramp 441a. In a first state, the retaining plate 442 and the flow cutter 441 interact via the flow-cutting side ramp 441a to press the flow cutter 441 against the piston assembly 43. As the flow cutter 441 moves away from the reset channel 431, the retaining plate 442 can move relative to the flow cutter 441 along the flow-cutting side ramp 441a until it is engaged between the reset channel 431 and the flow cutter 441, thereby placing the flow cutter 441 in a second state.

[0078] In one embodiment, the flow-blocking member 441 is located near the end of the reset flow channel 431 that connects to the drive cavity 412, and a flow-blocking side slope 441a is disposed at the end of the flow-blocking member 441 facing away from the piston assembly 43. Along the flow direction from the automatic cavity 422 to the drive cavity 412, the flow-blocking side slope 441a slopes inward and converges. Along the radial direction of the reset flow channel 431, the retaining plate 442 applies an abutment force to the flow-blocking side slope 441a. Figure 6 and Figure 7 In the illustrated embodiment, one end of the flow-blocking member 441 faces the depth of the main housing 411. When the buckle plate 442 exerts pressure on the flow-blocking inclined surface 441a of the flow-blocking member 441, this pressure can be decomposed into a pressure parallel to the radial direction of the flow-blocking member 441 and a pressure perpendicular to the radial direction of the flow-blocking member 441 and pointing towards the piston assembly 43. When the latter pressure acts on the flow-blocking inclined surface 441a, it can cause the flow-blocking member 441 to move closer to the piston assembly 43 and fit against the piston assembly 43 around the port of the reset flow channel 431, thus blocking the port of the reset flow channel 431. Figure 7 In the embodiment shown, the buckle plate 442 is also provided with a flow-blocking inclined surface 442a. The flow-blocking inclined surface 442a on the buckle plate 442 is arranged parallel to the flow-blocking inclined surface 441a on the flow-blocking member 441, so as to reduce the pressure borne by the flow-blocking member 441 or the buckle plate 442.

[0079] In some embodiments, the throttling element is movably disposed relative to the piston assembly 43, parallel to the communication direction of the reset flow channel 431. The latching plate 442 is slidably connected to the piston assembly 43, and the movement direction of the latching plate 442 is perpendicular to the communication direction of the reset flow channel 431. Specifically, when the throttling element 441 is subjected to a force in the direction of the driving cavity 412, the throttling element 441 acts in the opposite direction on the latching plate 442, causing the latching plate 442 to move away from the throttling element along its own sliding direction. After the edge of the throttling side inclined surface 441a disengages from the latching plate 442, the locking of the latching plate 442 on the throttling element 441 can be easily released, allowing the throttling element 441 to remain away from the port of the reset flow channel 431, thus achieving communication between the driving cavity 412 and the driven cavity 422. Figure 7 In the illustrated embodiment, the other end of the flow-blocking member 441 is narrowed relative to the wide side of the flow-blocking side slope 441a, and the retaining plate 442 abuts against the back of the flow-blocking side slope 441a, creating a gap between the flow-blocking member 441 and the port of the piston assembly 43 or the reset flow channel 431. More specifically, as shown... Figure 7 As shown, the flow-blocking component 441 and the retaining plate 442 are housed within the active plate 433. Within the active plate 433, the retaining plate 442 moves linearly towards or away from the flow-blocking component 441 via a limiting mechanism. Further, a retaining elastic element 442b is provided between the retaining plate 442 and the inner wall of the active plate 433. The retaining elastic element 442b is used to push the retaining plate 442 towards the flow-blocking component 441, thereby generating pressure on the flow-blocking inclined surface 441a. In this embodiment, the retaining elastic element 442b is a compression spring.

[0080] In some embodiments, the throttling element 441 is located on the side of the piston assembly 43 facing the drive chamber 412. The adjusting assembly 44 also includes a push rod 443, which acts on the throttling element 441 when the driven chamber 422 retracts to a predetermined degree, causing the throttling element 441 to move relative to the piston assembly 43 and switch from a first state to a second state.

[0081] In one embodiment not shown in the figure, the push rod 443 extends along the reset flow channel 431. One end of the push rod 443 is connected to the side of the throttling member 441 near the reset flow channel 431. The push rod 443 extends through the reset flow channel 431, and the other end reaches the driven cavity 422. Specifically, after the driven cavity 422 contracts to a predetermined extent, the other end of the push rod 443 abuts against the inner wall of the driven cavity 422. The push rod 443 pushes against the throttling member 441, causing the throttling member 441 to move away from the piston assembly 43. After the throttling side inclined surface 441a pushes against the retaining plate 442, it disengages from the retaining plate 442, and the throttling member 441 remains isolated from the port of the reset flow channel 431, thereby allowing the drive cavity 412 to communicate with the driven cavity 422.

[0082] In another embodiment not shown in the figure, one end of the push rod 443 is connected to the secondary housing 421, and the other end extends through the reset channel 431 to abut against the cut-off member 441 when the driven cavity 422 contracts to a predetermined degree.

[0083] exist Figure 6 In the illustrated embodiment, one end of the push rod 443 is connected to the flow cutter 441. The adjustment assembly 44 also includes a stop 446 connected to the other end of the push rod 443 and a secondary protrusion 444 connected to the inner side of the secondary housing 421. Along the direction of movement of the other end of the push rod 443 in the driven cavity 422, the stop 446 and the secondary protrusion 444 are arranged opposite to each other. Specifically, when the driven cavity 422 is compressed to a predetermined degree, the secondary protrusion 444 abuts against the stop 446. Since the area of ​​the stop 446 is larger than the area of ​​the other end of the push rod 443, it can be ensured that the other end of the push rod 443 can be pushed. By setting the length of the secondary protrusion 444, the degree of compression of the driven cavity 422 can be controlled.

[0084] In some embodiments, the adjusting assembly 44 further includes a main-side protrusion 445 connected to the main-side housing 411. When the drive cavity 412 contracts to a predetermined degree, the main-side protrusion 445 acts on the latch plate 442 to unlock the flow cutter 441. The small end of the main-side protrusion 445 faces the piston assembly 43. When the main-side protrusion 445 abuts against the latch plate 442, the latch plate 442 moves radially away from the flow cutter 441 along the reset flow channel 431 to restore the flow cutter 441's blockage of the port of the reset flow channel 431. Figure 8In the illustrated embodiment, the main side protrusion 445 has an unlocking inclined surface 447 around its small end. The unlocking inclined surface 447 slopes inwards towards the piston assembly 43. The main side protrusion 445 abuts against the edge of the latching plate 442 with the unlocking inclined surface 447. The latching plate 442 moves away from the flow cutter 441 in a direction perpendicular to the reset flow channel 431, creating a gap between the latching plate 442 and the edge of the flow cutter inclined surface 441a. The flow cutter 441 can then move through the movable plane of the latching plate 442 towards the port near the reset flow channel 431 to conform to the avoidance of the active plate 433 around the reset flow channel 431, thus restoring isolation between the drive cavity 412 and the driven cavity 422.

[0085] In some embodiments, the adjusting assembly 44 further includes a flow-blocking elastic element 441b connected to the flow-blocking element 441. When the driving cavity 412 contracts to a predetermined degree, the flow-blocking elastic element 441b acts on the flow-blocking element 441 to switch the flow-blocking element 441 from a second state to a first state. Figure 7 In the illustrated embodiment, the flow-blocking elastic member 441b applies an elastic force toward the piston assembly 43 to the flow-blocking member 441, forcing the flow-blocking member 441 to switch from the second state to the first state. Specifically, the elastic force of the flow-blocking elastic member 441b causes the flow-blocking member 441 to move closer to the port of the reset flow channel 431. Thus, when a gap is formed between the edge of the retaining plate 442 and the edge of the flow-blocking side slope 441a, the flow-blocking member 441 can move closer to the port of the reset flow channel 431 by means of the elastic force of the flow-blocking elastic member 441b. Specifically, one end of the active plate 433 extending into the main side housing 411 is connected to a flow-blocking support block 441c, and the flow-blocking member 441 is disposed between one port of the reset flow channel 431 and the flow-blocking support block 441c. The two ends of the flow-blocking elastic member 441b abut against the flow-blocking support block 441c and one end of the flow-blocking member 441, respectively. More specifically, the flow-blocking elastic member 441b is a compression spring.

[0086] In some embodiments, there are two fasteners 442, which are slidably connected to the piston assembly 43. In the second state, the two fasteners can be engaged between the reset flow channel 431 and the flow cut-off member 441. As the drive cavity 412 contracts, the main side protrusion 445 can force the two fasteners 442 away from each other, thereby unlocking the flow cut-off member 441.

[0087] exist Figure 8 In the illustrated embodiment, the snap plates 442 are arranged in pairs around the center of the reset channel 431. The small end of the main side protrusion 445 is used to insert into the gap between the snap plates 442 so that the snap plates 442 are far apart from each other. Since both sides of the unfastening inclined surface 447 of the main side protrusion 445 abut against two different snap plates 442 at the same time, the component force of the main side protrusion 445 in the direction of movement parallel to the snap plates 442 can be offset, thus preventing the main side protrusion 445 from breaking or loosening due to the component force.

[0088] Please see Figure 2 In the initial state, the driven cavity 422 is filled with fluid, while the fluid in the driving cavity 412 is completely emptied. At this time, the driving plate 433 is in a position that extends into the main side housing 411, the latch plate 442 is moved away from the flow cut-off member 441 by the action of the main side protrusion 445, and the flow cut-off member 441 blocks one port of the reset flow channel 431 under the action of the flow cut-off elastic member 441b, so the driving cavity 412 and the driven cavity 422 are in an isolated state.

[0089] When fluid is injected into the drive cavity 412, the space of the drive cavity 412 expands as the volume of the injected fluid increases. The fluid pushes the driven plate 435 through the active plate 433 and the transition rod 434 to move deeper into the secondary housing 421. The space of the driven cavity 422 can contract, allowing the fluid in the driven cavity 422 to be expelled. After the latch plate 442 leaves the main side protrusion 445, the latch plate 442 moves closer to the flow cut-off member 441 under the action of the latching elastic member 442b and uses the flow cut-off side inclined surface 442a to abut against the flow cut-off side inclined surface 441a, stabilizing the blockage of one port of the reset flow channel 431 by the flow cut-off member 441.

[0090] After the driven cavity 422 contracts to a predetermined extent, allowing the fluid stored in the driven cavity 422 to be fully discharged, the fluid injection into the drive cavity 412 stops. Simultaneously, the stop block 446 at the other end of the push rod 443 abuts against the secondary protrusion 444. The push rod 443 passes through the reset fluid movement and pushes the flow-blocking member 441. The flow-blocking side inclined surface 441a pushes the two buckles 442 away from each other. After the flow-blocking member 441 passes through the gap between the two buckles 442, the two buckles 442 close again, so that the back of the flow-blocking side inclined surface 441a abuts against the buckles 442. A gap is formed between the flow-blocking member 441 and the other end of the reset flow channel 431, allowing the other end of the reset flow channel 431 to communicate with the drive cavity 412. Due to the pressure exerted on the driven plate 435 by the fluid's own weight or the gravity of the piston assembly 43 itself, the driven plate 435 moves in the direction of exiting the secondary housing 421. The driven plate 435 pushes the driving plate 433 deeper into the primary housing 411 via the transition rod 434, compressing the space of the drive chamber 412. During the compression of the drive chamber 412, the fluid in the drive chamber 412 flows to the driven chamber 422 through the reset channel 431 in the piston assembly 43.

[0091] When the fluid in the drive cavity 412 is nearly emptied, the active plate 433 penetrates into the main side housing 411, and the unfastening inclined surface 447 of the main side protrusion 445 is inserted into the gap between the two fastening plates 442. The flow cut-off member 441 blocks one end of the reset flow channel 431 after passing through the movable plane of the fastening plate 442, so as to prevent the fluid in the drive cavity 412 from overflowing into the driven cavity 422 through the reset flow channel 431 when the drive cavity 412 expands again.

[0092] In some embodiments, the flushing mechanism 40 also includes an opening and closing component 45.

[0093] Specifically, the opening / closing assembly 45 is connected to the driven assembly 42. The opening / closing assembly 45 has a closed state that closes the drain outlet 425 and an open state that opens the drain outlet 425. When the drive cavity 412 expands, the opening / closing assembly 45 switches from the closed state to the open state.

[0094] In some embodiments, the opening / closing assembly 45 includes an opening / closing valve body 451, an opening / closing valve core 452 movably disposed within the opening / closing valve body 451, and a cover plate 453 connected to the opening / closing valve core 452. The opening / closing valve body 451 forms an unsealing chamber 451a at one end of the opening / closing valve core 452, and a sealing chamber 451b at the other end of the opening / closing valve core 452. Expansion of the sealing chamber 451b causes the opening / closing valve core 452 to move the cover plate 453 closer to the drain outlet 425. Expansion of the unsealing chamber 451a causes the opening / closing valve core 452 to move the cover plate 453 away from the drain outlet 425.

[0095] exist Figure 9 In the illustrated embodiment, along the movement direction of the opening / closing valve core 452 within the opening / closing valve body 451, the unsealing chamber 451a and the sealing chamber 451b are disposed at both ends of the opening / closing valve core 452. When fluid is injected into the unsealing chamber 451a, under the expansion tendency of the unsealing chamber 451a, the opening / closing valve core 452 moves towards the sealing chamber 451b. Simultaneously, the opening / closing valve core 452 drives the cover plate 453 to move, causing the cover plate 453 to move away from the drain port 425. Thus, the fluid in the driven chamber 422 can be output to the body 20 through the drain port 425. When fluid is injected into the sealing chamber 451b, under the expansion trend of the sealing chamber 451b, the opening and closing valve core 452 moves towards the unsealing chamber 451a. At the same time, the opening and closing valve core 452 drives the cover plate 453 to move, so that the cover plate 453 moves closer to the drain port 425. After the cover plate 453 is in contact with the drain port 425, the communication between the driven chamber 422 and the body 20 can be blocked.

[0096] exist Figure 9 In the illustrated embodiment, along the movement direction of the opening / closing valve core 452, the opening / closing valve body 451 is sequentially provided with a first liquid port 451c, a second liquid port 451d, a third liquid port 451e, and a fourth liquid port 451f. The first liquid port 451c is used to connect to the unsealing chamber 451a, the second liquid port 451d is connected to the driving chamber 412, the third liquid port 451e is connected to the driven chamber 422, and the fourth liquid port 451f is connected to the sealing chamber 451b. The opening / closing valve core 452 is used to isolate the second liquid port 451d or the third liquid port 451e. Specifically, in Figure 9In the embodiment shown, the first liquid port 451c is connected to the output port of the main control valve 60, and the fourth liquid port 451f is connected to the output port of the secondary control valve 80.

[0097] Specifically, in the closed state, the opening / closing valve core 452 is positioned close to the unsealing chamber 451a, isolating the unsealing chamber 451a from the second liquid port 451d. When fluid supplied by the fluid supply source is injected into the unsealing chamber 451a from the first liquid port 451c, the unsealing chamber 451a expands and pushes the opening / closing valve core 452 towards the sealing chamber 451b. When the end of the opening / closing valve core 452 facing the unsealing chamber 451a passes the second liquid port 451d, the opening / closing valve core 452 releases the isolation from the second liquid port 451d, connecting the unsealing chamber 451a and the second liquid port 451d, allowing fluid supplied by the fluid supply source to be injected into the driving chamber 412, causing the driving chamber 412 to expand. The expansion of the driving chamber 412 causes the fluid in the driven chamber 422 to be expelled, while the opening / closing valve core 452 has previously driven the cover plate 453 away from the drain port 425.

[0098] Specifically, in the open state, the opening / closing valve core 452 is positioned close to the sealing cavity 451b, and in this position, the opening / closing valve core 452 isolates the sealing cavity 451b from the third liquid port 451e. When fluid supplied by the fluid supply source is injected into the sealing cavity 451b from the fourth liquid port 451f, the sealing cavity 451b expands and pushes the opening / closing valve core 452 towards the unsealing cavity 451a. When the end of the opening / closing valve core 452 facing the sealing cavity 451b passes the third liquid port 451e, the opening / closing valve core 452 releases the isolation from the third liquid port 451e, and the sealing cavity 451b and the third liquid port 451e are connected, allowing the fluid supplied by the fluid supply source to be injected into the driven cavity 422, replenishing the driven cavity 422 with fluid.

[0099] exist Figure 9 In the illustrated embodiment, the opening orientation of the second liquid port 451d is opposite to that of the third liquid port 451e. This avoids the second liquid port 451d and the third liquid port 451e being too close, and allows sufficient space to be reserved for connecting the corresponding drainage sleeves. Specifically, the opening orientations of the second liquid port 451d and the third liquid port 451e are respectively opposite to the movement path of the on / off valve core 452.

[0100] In some embodiments, a limiting groove 451g is provided on the inner side of the opening and closing valve body 451. The limiting groove 451g is used to limit the movement path of the opening and closing valve core 452 to prevent the end of the opening and closing valve core 452 facing the unsealing cavity 451a or the end of the opening and closing valve core 452 facing the sealing cavity 451b from completely fitting against the inner wall of the opening and closing valve body 451, ensuring that the fluid can generate pressure on the end of the opening and closing valve core 452, causing the opening and closing valve core 452 to move. Figure 9 In the embodiment shown, a portion of the opening and closing valve core 452 is housed in the limiting groove 451g. By setting the extension length of the limiting groove 451g, gaps are maintained between the two ends of the opening and closing valve core 452 and the inner wall of the opening and closing valve body 451.

[0101] exist Figure 6 In the illustrated embodiment, the inner diameter of the extension 424 is smaller than the inner diameter of the secondary shell 423. The drain outlet 425 is located on one side of the extension 424 in its width direction, and the on / off valve body 451 is located on the other side of the extension 424 in its width direction. Since the width of the extension 424 is smaller than the width of the secondary shell 423, and the drain outlet 425 and the on / off valve body 451 are located on opposite sides of the extension 424 in its width direction, the relative distance between the cover plate 453 and the on / off valve core 452 can be reduced, which helps to simplify the transmission structure between the cover plate 453 and the on / off valve core 452.

[0102] exist Figure 6 In the embodiment shown, the opening and closing valve body 451 is disposed on the side of the extension 424 away from the preset edge line. Therefore, in the length direction of the extension 424, the secondary shell 423 is disposed on the same side as the opening and closing valve body 451, thereby effectively reducing the space occupied in the width direction of the extension 424.

[0103] In some embodiments, the opening / closing assembly 45 further includes a push rod 454 connected between the opening / closing valve core 452 and the cover plate 453, so that the opening / closing valve core 452 can drive the cover plate 453 to move. Figure 6 In the illustrated embodiment, the push rod 454 passes through the extension 424. More specifically, a sealing ring may be provided at the contact position between the opening / closing valve body 451 and the push rod 454, or at the contact position between the extension 424 and the push rod 454, to prevent fluid exchange between the unsealing chamber 451a and the driven chamber 422.

[0104] exist Figure 4 and Figure 6 In the illustrated embodiment, when fluid is injected into the unsealing chamber 451a, to prevent the accumulation of fluid in the sealing chamber 451b from affecting the movement of the opening and closing valve core 452, a first drain port 451h that is always connected to the sealing chamber 451b is provided on the opening and closing valve body 451. The opening and closing assembly 45 also includes a first pressure relief valve 455 connected to the first drain port 451h. When the first operating plate 511 is at another predetermined angle, the main control valve 60 injects fluid into the first liquid port 451c. At the same time, the first operating plate 511 abuts against the pressure relief trigger end of the first pressure relief valve 455, causing the first pressure relief valve 455 to open. When the opening and closing valve core 452 moves in the direction of compressing the sealing chamber 451b, the fluid in the sealing chamber 451b flows out sequentially from the first drain port 451h and the first pressure relief valve 455 into the external storage container.

[0105] exist Figure 4 and Figure 6 In the illustrated embodiment, when fluid is injected into the sealing chamber 451b, to prevent the accumulation of fluid in the unsealing chamber 451a from affecting the movement of the opening and closing valve core 452, a second drain port 451i that is always connected to the unsealing chamber 451a is provided on the opening and closing valve body 451. The opening and closing assembly 45 also includes a second pressure relief valve 456 connected to the second drain port 451i. When the contraction of the driven chamber 422 is completed, the first position detection element 513 switches the first operating plate 511 to a predetermined angle, and the main control valve 60 injects fluid into the fourth liquid port 451f. At the same time, the first position detection element 513 abuts against the pressure relief trigger end of the second pressure relief valve 456, causing the second pressure relief valve 456 to open. When the opening and closing valve core 452 moves in the direction of compressing the unsealing chamber 451a, the fluid in the unsealing chamber 451a flows out sequentially from the second drain port 451i and the second pressure relief valve 456 into the external storage container.

[0106] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0107] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A flushing mechanism, characterized in that, include: The piston assembly is equipped with a reset flow channel; A main side housing is connected to the piston assembly, and the main side housing is used to cooperate with the piston assembly to form a drive cavity with a variable space size; The secondary housing is connected to the piston assembly, and the secondary housing is used to cooperate with the piston assembly to form a driven cavity with a variable space size; When the driving cavity expands, the space of the driven cavity can contract due to the force transmitted by the driving cavity; and An adjustment component is connected to the piston assembly and is capable of controlling the opening and closing of the reset flow channel; the reset flow channel is capable of communicating the driven chamber with the driving chamber, so that fluid in the driving chamber flows to the driven chamber; The piston assembly includes a driving plate, a transition rod, and a driven plate connected in sequence; the driving plate cooperates with the main side housing to form the driving cavity; the driven plate cooperates with the secondary side housing to form the driven cavity; the reset flow channel is sequentially opened on the driving plate, the transition rod, and the driven plate; The adjusting assembly includes a flow-blocking element and a latching plate connected to the piston assembly; the flow-blocking element is movable relative to the piston assembly to have a first state of blocking the reset flow channel and a second state of allowing the reset flow channel to flow freely; the latching plate is capable of locking the flow-blocking element in the first state and the second state.

2. The flushing mechanism according to claim 1, characterized in that, The flow-blocking member corresponds to the port of the reset flow channel, and at least one of the flow-blocking member and the buckle plate has a flow-blocking side slope; in the first state, the buckle plate and the flow-blocking member interact through the flow-blocking side slope to press the flow-blocking member against the piston assembly; as the flow-blocking member moves away from the reset flow channel, the buckle plate can move relative to the flow-blocking member along the flow-blocking side slope until it is locked between the reset flow channel and the flow-blocking member, so that the flow-blocking member is in the second state.

3. The flushing mechanism according to claim 2, characterized in that, The adjustment assembly also includes a push rod. When the driven cavity contracts to a predetermined degree, the push rod acts on the flow-blocking member to cause the flow-blocking member to move relative to the piston assembly and switch from the first state to the second state.

4. The flushing mechanism according to claim 3, characterized in that, The push rod extends along the reset flow channel, and one end of the push rod is connected to the flow cut-off element, and the other end of the push rod is used to abut against the inner wall of the secondary housing when the driven cavity contracts to a predetermined degree; Alternatively, the push rod extends along the reset flow channel, with one end of the push rod connected to the secondary housing and the other end used to abut against the flow cut-off element when the driven cavity contracts to a predetermined degree.

5. The flushing mechanism according to claim 1, characterized in that, The adjustment assembly further includes a main side protrusion and a flow-blocking elastic element; when the drive cavity contracts to a predetermined degree, the main side protrusion acts on the buckle plate to unlock the flow-blocking element, and the flow-blocking elastic element acts on the flow-blocking element to switch the flow-blocking element from the second state to the first state.

6. The flushing mechanism according to claim 5, characterized in that, There are two buckle plates, which are slidably connected to the piston assembly; in the second state, the two buckle plates can be locked between the reset flow channel and the flow cut-off member; As the drive cavity contracts, the main side protrusion forces the two buckles apart, thereby unlocking the interceptor.

7. The flushing mechanism according to claim 5, characterized in that, The flow-blocking elastic element applies an elastic force toward the piston assembly to the flow-blocking element, thereby forcing the flow-blocking element to switch from the second state to the first state.

8. A bathroom fixture, characterized in that, include: The body and the flushing mechanism as described in any one of claims 1 to 7; the body is provided with a liquid tank, the bottom of the liquid tank is provided with a drain port, and the fluid discharged from the driven cavity is output to the liquid tank or drain port of the body to flush the inner wall of the liquid tank or to discharge the dirt from the drain port.

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