Flushing mechanism, drainage device and bathroom equipment

Abstract

The present invention relates to a flushing mechanism, a drainage device and a bathroom equipment. The flushing mechanism comprises: a driving assembly, a driven assembly and a transmission assembly. The driving assembly has a driving cavity for accommodating a fluid and having a variable space size. The driven assembly has a driven cavity for accommodating a fluid and having a variable space size. The space of the driven cavity and the driving cavity can be changed along the axial direction. The transmission assembly comprises a first fixed pulley, a second fixed pulley, a third fixed pulley, a main side traction rope and a secondary side traction rope; the third fixed pulley is coaxially connected to the second fixed pulley, and the diameter of the third fixed pulley is smaller than the diameter of the second fixed pulley; the main side traction rope is connected to the driving assembly in sequence, bypasses the first fixed pulley and coils around the third fixed pulley; the secondary side traction rope is connected to the driven assembly and coils around the second fixed pulley; the winding direction of the secondary side traction rope relative to the second fixed pulley is opposite to the winding direction of the main side traction rope relative to the third fixed pulley; when the driving cavity is expanded and changed by the driven external force, the main side traction rope is driven to move.

Description

Technical Field

[0001] The present invention relates to the technical field of bathroom equipment, and in particular to a flushing mechanism, a drainage device and bathroom equipment. Background Art

[0002] As a bathroom equipment, the development trend of smart toilets is the same as that of mobile phones, with the cover becoming thinner and thinner, almost flat, to improve the appearance and save indoor space. The ceramic water tank of a traditional toilet needs to meet the height requirements to have enough potential energy and water volume to flush the toilet, but the height of the ceramic water tank will cause the smart toilet to occupy a larger indoor space as a whole, making this method gradually eliminated.

[0003] The ceramic-free water tank toilets on the market usually use tap water pressure to flush directly, which requires high water pressure. However, due to the unstable water pressure in old communities, when the water pressure is insufficient, the water output flow rate is slow, and it is impossible to ensure that the washing and flushing are clean.

[0004] Other non-ceramic water tank toilets ensure water volume by providing a booster pump, but this method causes the toilet structure to be complex, expensive and easy to break. Summary of the invention

[0005] Based on this, it is necessary to provide a flushing mechanism, drainage device and bathroom equipment that use a mechanical structure to increase the water flow rate, in order to address the problem that the water pressure of existing bathroom equipment cannot guarantee the flow rate due to water source limitations, and adding a booster pump will lead to a complex structure.

[0006] A flushing mechanism, comprising:

[0007] A driving assembly having a driving cavity with a variable size for accommodating a fluid;

[0008] The driven component has a driven cavity for accommodating fluid and having a variable space size; the space of the driven cavity and the driving cavity can be changed along the axial direction; and

[0009] A transmission assembly, the transmission assembly comprising a first fixed pulley, a second fixed pulley, a third fixed pulley, a primary traction rope and a secondary traction rope; the third fixed pulley is coaxially connected to the second fixed pulley, and the diameter of the third fixed pulley is smaller than the diameter of the second fixed pulley; the primary traction rope is sequentially connected to the driving assembly, bypasses the first fixed pulley and winds around the third fixed pulley; the secondary traction rope is connected to the driven assembly and winds around the second fixed pulley; the winding direction of the secondary traction rope relative to the second fixed pulley is opposite to the winding direction of the primary traction rope relative to the third fixed pulley; when the driving cavity expands and changes due to the driven external force, it drives the primary traction rope to move, so as to cause the driven cavity to contract through the secondary traction rope.

[0010] In the flushing mechanism, before the fluid of the driven chamber is started to be discharged, the driven chamber is stored with fluid and the driving chamber is in a contracted state. When the driving chamber expands due to the injection of fluid, the driving assembly drives the main side traction rope to move, and the main side traction rope bypasses the first fixed pulley and then pulls the third fixed pulley to rotate. Part of the main side traction rope originally coiled on the third fixed pulley is detached during the rotation of the third fixed pulley, so that the straightened length of the main side traction rope is increased, so that the driving chamber has space for further expansion. When the driving chamber expands, the second fixed pulley rotates in the same direction with the third fixed pulley due to its coaxial connection with the third fixed pulley, and because the winding direction of the secondary side traction rope relative to the second fixed pulley is opposite to the winding direction of the main side traction rope relative to the third fixed pulley, the originally straightened part of the secondary side traction rope is wound onto the second fixed pulley. Since the space of the driven chamber and the driving chamber changes along the axial direction, and since the diameter of the third fixed pulley is smaller than the diameter of the second fixed pulley, the speed of winding the secondary side traction rope is greater than the speed of pulling out the main side traction rope, so that the moving speed of the driven plate is greater than the moving speed of the active plate. When the difference in the average cross-sectional area between the driven cavity and the driving cavity is negligible, the spatial variation of the driven cavity can be made greater than that of the driving cavity, so that the driven cavity can discharge a larger volume of fluid, thereby solving the problem of the main body of the bathroom equipment not being flushed cleanly under low water pressure. Or using less water to achieve the flushing effect is in line with today's energy-saving and environmental protection concepts. At the same time, since there is no need to add an additional booster pump, the structure of the flushing mechanism is complex, the cost is increased, or the stability is reduced.

[0011] In one of the embodiments, when the driving cavity expands and changes due to the driven external force, the primary side traction rope portion wound around the third fixed pulley is pulled away from the third fixed pulley and causes the third fixed pulley to rotate in the forward direction, and the second fixed pulley increases the winding length of the secondary side traction rope on the second fixed pulley as the third fixed pulley rotates in the forward direction, so that the driven cavity contracts because the portion partially connected to the secondary side traction rope moves closer to the second fixed pulley.

[0012] In one embodiment, the transmission assembly further includes an elastic member, which is connected between the driven assembly and the second fixed pulley or the third fixed pulley; the elastic member generates an elastic restoring force in a deformed state, and the elastic restoring force acts on the second fixed pulley or the third fixed pulley, so that the second fixed pulley or the third fixed pulley has a tendency to rotate in the forward direction.

[0013] In one embodiment, the first fixed pulley and the third fixed pulley are placed on the same plane outside the driving cavity and the driven cavity, so that the extension path of the main-side traction rope is placed outside the driving cavity and the driven cavity.

[0014] In one of the embodiments, the second fixed pulley is located between the third fixed pulley and the driven chamber to reduce the length of the straightened portion of the secondary traction rope.

[0015] In one embodiment, at least one of the following technical features is also included:

[0016] The edge of the first fixed pulley is provided with an annular groove opening toward the radial outside to accommodate the main side traction rope passing around the first fixed pulley;

[0017] The edge of the second fixed pulley is provided with an annular groove opening toward the radial outside to accommodate the secondary traction rope wound on the second fixed pulley;

[0018] An annular groove with an opening facing radially outward is provided on the edge of the third fixed pulley to accommodate the main-side traction rope wound on the third fixed pulley.

[0019] In one embodiment, the driving component includes a main side shell and an active plate movably arranged relative to the main side shell in the axial direction, and the inner wall of the main side shell cooperates with the active plate to form all or part of the inner wall of the driving cavity, so that the space of the driving cavity can be changed in the axial direction; the driven component includes the secondary side shell and a driven plate movably arranged relative to the secondary side shell in the axial direction, and the inner wall of the secondary side shell cooperates with the driven plate to form all or part of the inner wall of the driven cavity, so that the space of the driven cavity can be changed in the axial direction; the main side traction rope is sequentially connected to the active plate, bypasses the first fixed pulley and winds around the third fixed pulley; the secondary side traction rope is connected to the driven plate and winds around the second fixed pulley.

[0020] In one embodiment, the primary shell and the secondary shell are in a semi-enclosed structure; the openings of the primary shell and the secondary shell are opposite to each other and connected to each other.

[0021] A drainage device comprises: a flushing mechanism and a regulating component connected to the flushing mechanism; the regulating component is used to control the on-off connection between the driving chamber and the fluid supply source, and the fluid input into the driving chamber generates a driving external force on the driving chamber to expand the driving chamber; the regulating component is also used to adjust the fluid replenishment of the driven chamber; after completing or interrupting the compression of the driven chamber, the regulating component is also used to guide the fluid in the driving chamber to replenish the driven chamber.

[0022] A bathroom device comprises: a drainage device and a body connected to the drainage device; the body is provided with a liquid pool, and a sewage outlet is provided at the bottom of the liquid pool, and the fluid discharged from the dynamic cavity is output to the liquid pool or the sewage outlet of the body to flush the inner wall of the liquid pool or discharge dirt from the sewage outlet. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of a bathroom equipment according to an embodiment of the present invention;

[0024] Figure 2 for Figure 1 A schematic diagram of a structure of a drainage device in which a fluid supply source injects fluid into a driving chamber and fluid in a driven chamber is being discharged;

[0025] Figure 3 for Figure 1 A schematic diagram of a structure of a drainage device in which a fluid supply source replenishes fluid to a driven chamber and fluid in a driving chamber is guided to the driven chamber;

[0026] Figure 4 for Figure 2 Schematic diagram of the structure of the flushing mechanism.

[0027] Reference numerals:

[0028] 100, bathroom equipment; 20, drainage device; 40, flushing mechanism; 41, driving assembly; 411, driving cavity; F1, primary side preset path; 412, primary side shell; 413, primary side opening; 414, active plate; 415, primary side flexible member; 418, primary side extension block; 4181, air hole; 42, driven assembly; 421, driven cavity; F2, secondary side preset path; 424, transition; 425, secondary side shell; 426, secondary side opening; 427, driven plate; 428, secondary side flexible member; 429, secondary side extension block; 43, transmission assembly; 431, first fixed pulley; 432, second fixed pulley; 4 33. The third fixed pulley; 434. The primary side traction rope; 435. The secondary side traction rope; 436. The elastic member; 50. The regulating assembly; 51. The primary side switching valve member; 510b. The first port; 510c. The second port; 510d. The third port; 52. The switch control member; 54. The contraction detection member; 55. The secondary side switching valve member; 550. The fourth port; 551. The fifth port; 56. The liquid level detection member; 60. The drain pipe; 62. The high-level section; 30. The main body; 31. The liquid pool; 311. The sewage outlet; 32. The washing waterway; 321. The liquid outlet; 33. The injection waterway; 34. The siphon; 700. The fluid supply source. DETAILED DESCRIPTION

[0029] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0030] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0031] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0032] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0034] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0035] The technical solution provided by the embodiments of the present invention is described below in conjunction with the accompanying drawings.

[0036] A bathroom device 100 according to an embodiment of the present invention.

[0037] See also Figure 1 In some embodiments, the bathroom equipment 100 includes a drainage device 20 and a body 30 connected to the drainage device 20. The body 30 is provided with a liquid pool 31, and a sewage outlet 311 is provided at the bottom of the liquid pool 31. In one embodiment, the bathroom equipment 100 is a toilet. It can be understood that the bathroom equipment 100 can also be other equipment that needs to be flushed and cleaned, such as a wash basin, a bathtub, etc. Figure 2 and Figure 3 In the illustrated embodiment, the drainage device 20 includes a flushing mechanism 40 and a regulating component 50 connected to the flushing mechanism 40. The regulating component 50 is used to control the flushing mechanism 40 so that the fluid in the flushing mechanism 40 performs a washing or flushing operation on the body 30. The body 30 may have a washing waterway 32 to guide the fluid in the drainage device 20 to the upper side of the liquid pool 31 so that the fluid can evenly flush the inner wall of the liquid pool 31 from top to bottom. The body 30 may also have a jetting waterway 33 and a siphon 34 connected to the sewage outlet 311. The jetting waterway 33 guides the fluid in the drainage device 20 to the liquid pool 31 and discharges the dirt in the liquid pool 31 through the sewage outlet 311 and the siphon 34.

[0038] The present invention provides a flushing mechanism 40.

[0039] See also Figure 1 In some embodiments, the flushing mechanism 40 includes: a driving assembly 41, a driven assembly 42, and a transmission assembly 43. The driving assembly 41 has a driving chamber 411 for accommodating fluid and having a variable space size. The driven assembly 42 has a driven chamber 421 for accommodating fluid and having a variable space size. The space of the driven chamber 421 and the driving chamber 411 can be changed along the axial direction.

[0040] In some embodiments, the fluid input into the driving chamber 411 generates an external driving force on the driving chamber 411, causing the driving chamber 411 to expand. After the compression of the driven chamber 421 is completed, the regulating component 50 is used to guide the fluid in the driving chamber 411 to be replenished to the driven chamber 421, and is also used to control the connection between the driven chamber 421 and the fluid supply source 700, and replenish the fluid provided by the fluid supply source 700 to the driven chamber 421. In some embodiments, the fluid supply source 700 is the output of the municipal tap water pipeline, and the fluid injected into the driving chamber 411 or the driven chamber 421 is tap water. In some other embodiments, the fluid supply source 700 can also be the output of the municipal tap water pipeline after the booster pump, or it can be the pumping output of the external pump body of the bathroom equipment 100 to the external water storage.

[0041] exist Figure 2 and Figure 3 In the illustrated embodiment, the drainage device 20 further includes a drainage pipe 60 connected to the driven chamber 421, and the drainage pipe 60 leads to the liquid pool 31 to guide the fluid discharged from the driven chamber 421 to flow to the liquid pool 31. Specifically, the drainage pipe 60 is at least partially higher in level than the driven chamber 421, and the partially high-position section 62 of the drainage pipe 60 is.

[0042] The driving assembly 41 has a primary port 413 through which fluid flows into or out of the driving chamber 411. The driven assembly 42 has a secondary port 426 through which fluid flows into or out of the driven chamber 421.

[0043] exist Figure 2 and Figure 3 In the illustrated embodiment, the regulating component 50 includes a primary switching valve member 51 and a switch control member 52. The switch control member 52 adjusts the passage structure in the primary switching valve member 51 according to a signal or operation. The regulating component 50 also includes a secondary switching valve member 55 connected to the driven component 42 and a liquid level detection member 56 connected to the driven component 42. The secondary switching valve member 55 is connected between the driven chamber 421 and the fluid supply source 700. The liquid level detection member 56 floats in the driven chamber 421 or the drain pipe 60, or is arranged between the driven chamber 421 and the drain pipe 60, and is used to detect the liquid level height in the driven chamber 421 or the drain pipe 60 and generate feedback to the secondary switching valve member 55, and the secondary switching valve member 55 switches the flow passage between the driven chamber 421 and the fluid supply source 700 according to the feedback.

[0044] In some embodiments, the liquid level detection member 56 is a float, and the floating lifting direction of the liquid level detection member 56 is limited so that the liquid level detection member 56 can accurately cooperate with the secondary side switching valve member 55. Specifically, the liquid level detection member 56 is slidably connected to the secondary side switching valve member 55 or the driven component 42. Figure 2 and Figure 3In the embodiment shown, a portion of the liquid level detection member 56 is movably disposed in the secondary switching valve member 55. Figure 3 Specifically, the secondary side switching valve member 55 has a fourth port 550 and a fifth port 551. The fourth port 550 of the secondary side switching valve member 55 is connected to the fluid supply source 700, and the fifth port 551 is connected to the driven chamber 421. When the interior of the secondary side switching valve member 55 is in the reset state, the fourth port 550 is connected to the fifth port 551.

[0045] In some other embodiments, the liquid level detection component 56 can also be any one or more components such as a mechanical float, a Hall sensor, a light sensor, a water pressure sensor, and a current sensor that can assist in detecting or determining the liquid level.

[0046] Furthermore, the driven chamber 421 is connected to the drain pipe 60 via the transition portion 424, and the level of the transition portion 424 is higher than the main body of the driven chamber 421 and slightly lower than the high section 62 of the drain pipe 60. Figure 2 In the illustrated embodiment, the driven cavity 421 is connected to the transition point 424 from its top side.

[0047] exist Figure 2 and Figure 3 In the illustrated embodiment, the liquid level detection member 56 is disposed at the transition portion 424. During the process of fluid replenishment in the slave chamber 421, the liquid level in the transition portion 424 of the slave chamber 421 rises to a level slightly lower than the high-level section 62 of the drain pipe 60 until it contacts the liquid level detection member 56. The liquid level detection member 56 floats upward due to the buoyancy, and promptly generates feedback to the secondary switching valve member 55. The secondary switching valve member 55 cuts off the flow channel between the fluid supply source 700 and the slave chamber 421, thereby stopping the replenishment of the fluid into the slave chamber 421, and preventing the fluid from automatically flowing out to the body 30 due to the liquid level in the slave chamber 421 and the drain pipe 60 exceeding the high-level section 62 of the drain pipe 60. Figure 2 and Figure 3 In the illustrated embodiment, the fifth port 551 of the secondary switching valve member 55 is connected to the transition point 424 of the driven chamber 421. Figure 3 In the illustrated embodiment, when the secondary switching valve member 55 is in the reset state, the fluid input from the fluid supply source 700 passes through the secondary switching valve member 55 and enters the transition portion 424 of the driven chamber 421 , and automatically flows to the lower side of the driven chamber 421 under its own gravity.

[0048] In some embodiments not shown in the figures, the fluid replenishment of the driven chamber 421 may be controlled in other ways.

[0049] See also Figure 2 and Figure 3, the main-side switching valve member 51 is connected between the driving chamber 411 and the fluid supply source 700, and is also connected between the driving chamber 411 and the driven chamber 421. That is, the first port 510b of the main-side switching valve member 51 having three ports is connected to the fluid supply source 700, the second port 510c is connected to the main-side port 413 of the driving chamber 411, and the third port 510d is connected to the driven chamber 421. The regulating component 50 also includes a contraction detection member 54 connected to the driven component 42, and the contraction detection member 54 is used to detect the compression degree of the driven chamber 421 and reset the switch control member 52. In the reset state, the switch control member 52 isolates the driving chamber 411 from the fluid supply source 700, while the driving chamber 411 is connected to the driven chamber 421.

[0050] In some embodiments, before starting to drain, the driving chamber 411 is in a contracted state. The liquid level in the slave chamber 421 rises to a predetermined height, and the liquid level detection member 56 floats up, causing the secondary switching valve member 55 to cut off the flow path between the slave chamber 421 and the fluid supply source 700, preventing the fluid from being replenished into the slave chamber 421. The first port 510b of the primary switching valve member 51 is isolated from the second port 510c, preventing the fluid supply source 700 from injecting fluid into the driving chamber 411.

[0051] Specifically, before drainage, since sufficient fluid is stored in the driven chamber 421 and the drain pipe 60, the liquid level in the driven chamber 421 and the drain pipe 60 is relatively high, so that the liquid level detection member 56 floats to a relatively high height. After floating to a corresponding height, the liquid level detection member 56 causes the ejector pin in the secondary switching valve member 55 to move through mechanical, electrical or other coordinated actions, thereby isolating the fourth port 550 from the fifth port 551 of the secondary switching valve member 55, thereby preventing the fluid supply source 700 from replenishing fluid into the driven chamber 421. In other embodiments, it is also possible that after the liquid level detection member 56 floats to a corresponding height in the transition portion 424, the secondary switching valve member 55 recognizes the liquid level detection member 56 through photoelectric induction, electromagnetic induction, Hall effect or other sensing actions, thereby causing the driving component in the secondary switching valve member 55 to move the ejector pin in the secondary switching valve member 55, thereby isolating the fourth port 550 from the fifth port 551 of the secondary switching valve member 55.

[0052] See also Figure 2 After the drainage is started, the first port 510b and the second port 510c are connected inside the main-side switching valve 51, and the second port 510c and the third port 510d are cut off inside, that is, the fluid supply source 700 is connected to the driving chamber 411, and the driving chamber 411 is isolated from the driven chamber 421. The fluid output from the fluid supply source 700 is input into the driving chamber 411 through the main-side switching valve 51, and the driving chamber 411 has an expansion trend. Through the transmission of the transmission assembly 43, the water stored in the driven chamber 421 is discharged to the body 30 of the bathroom equipment 100 through the drainage pipe 60.

[0053] During the process from the beginning of drainage of the driven chamber 421 to the end of drainage of the driven chamber 421, as the fluid output from the fluid supply source 700 is injected into the driving chamber 411, the driven chamber 421 is contracted through the transmission assembly 43, and the fluid in the driven chamber 421 passes through the secondary side port 426 and is discharged into the main body 30 through the drain pipe 60. When the inner wall of the driven chamber 421 contracts and deforms to abut against the contraction detection member 54 provided in the driven chamber 421, the contraction detection member 54 plays a transmission role between the inner wall of the driven chamber 421 and the switch control member 52, so as to reset the switch control member 52 and cut off the first port 510b and the second port 510c inside the main side switching valve member 51. More specifically, in Figure 2 and Figure 3 In the illustrated embodiment, when the drainage process of the driven chamber 421 is nearly completed, the driven plate 427 fully penetrates into the inner cavity of the secondary housing 425 and abuts against the contraction detection member 54. When the contraction detection member 54 is pushed by the driven plate 427, the switch control member 52 is transmitted to reset the switch control member 52.

[0054] Therefore, the flow channel structure in the main-side switching valve member 51 is adjusted so that the first port 510b and the second port 510c are cut off internally, and the fluid from the fluid supply source 700 stops being injected into the driving chamber 411, thereby compressing the driven chamber 421 to drain water. At the same time as the switch control member 52 is reset, the flow channel structure in the main-side switching valve member 51 is adjusted so that the second port 510c and the third port 510d are connected internally. Thereafter, the fluid in the driving chamber 411 can flow back out and be guided to the driven chamber 421 through the main-side switching valve member 51.

[0055] Please refer again Figure 3 After the fluid supply source 700 is isolated from the driving chamber 411 by triggering the contraction detection member 54, before the liquid level detection member 56 floats down to start the secondary side switching valve member 55 to conduct, the fluid at the transition point 424 flows back to the middle and lower part of the driven chamber 421 due to its own gravity, and the remaining fluid in the driven chamber 421 also forms a thrust on the inner wall of the driven chamber 421 due to its own weight, causing the driven chamber 421 to expand. The expansion of the driven chamber 421 causes the compression of the driving chamber 411 through the transmission assembly 43, which causes the fluid in the driving chamber 411 to be squeezed and flow to the driven chamber 421 through the primary side switching valve member 51.

[0056] Since the driven chamber 421 is actively expanded by the gravity or pressure of the fluid, and the volume of the fluid added to the driven chamber 421 by the driving chamber 411 is limited, the liquid level in the driven chamber 421 decreases. When the liquid level in the driven chamber 421 drops to below a certain height value, the liquid level detection member 56 floats down and moves away from the secondary side switching valve member 55, causing the top pin in the secondary side switching valve member 55 to lose its transmission function and reset and conduct. The reset and conduction of the secondary side switching valve member 55 means that the fourth port 550 of the secondary side switching valve member 55 is connected to the fifth port 551, so that the fluid supply source 700 can replenish the fluid into the driven chamber 421 through the secondary side switching valve member 55. The fluid added into the driven chamber 421 increases the pressure on the inner wall of the driven chamber 421, promoting the expansion of the driven chamber 421 and the compression of the driving chamber 411. When the driving chamber 411 is further compressed, the fluid flowing out is replenished and refluxed to the driven chamber 421 through the primary-side switching valve element 51 and the transition point 424 .

[0057] As the fluid supply source 700 replenishes the fluid, the liquid level in the driven chamber 421 and the transition portion 424 continues to rise. After the liquid level detection member 56 floats to a corresponding height, the ejector pin in the secondary switching valve member 55 is actuated through mechanical, electrical, photoelectric or other sensing actions, so that the fourth port 550 and the fifth port 551 of the secondary switching valve member 55 are isolated, thereby stopping the fluid supply source 700 from replenishing the fluid in the driven chamber 421, ending the water replenishment process of the driven chamber 421, and the drainage device 20 re-enters the ready state.

[0058] In addition to the above-mentioned embodiments, the switch control member 52 is reset by using the contraction detection member 54. In other embodiments, after the compression of the driven chamber 421 is completed, the switch control member 52 is reset to the cut-off state by the electric control signal, so that the fluid supply source 700 and the driving chamber 411 are in an isolated and cut-off state. In some other embodiments, the switch control member 52 can also be reset to the isolated and cut-off state of the driving chamber 411 and the fluid supply source 700 by manually operating a button or a handle on the switch control member 52.

[0059] In the above-mentioned embodiment, the horizontal height of the drain pipe 60 is at least partially higher than the horizontal height of the driven chamber 421. In some embodiments not shown in the figure, the drain pipe 60 and the transition part 424 may be arranged to be lower than the driven chamber 421, and the driven chamber 421 is connected to the transition part 424 from its bottom side. By arranging valves such as pressure valves or solenoid valves in the drain pipe 60 and the transition part 424, the fluid in the driven chamber 421 is prevented from being spontaneously injected into the drain pipe 60 and discharged due to its own gravity. When the expansion of the driving chamber 411 compresses the driven chamber 421, the pressure in the driven chamber 421 increases and the pressure valve member is opened, so that the fluid in the driven chamber 421 enters the drain pipe 60 and is discharged to the body 30. In this embodiment, the driven chamber 421 can be connected to the drain pipe 60 through its bottom side.

[0060] In some embodiments, the transmission assembly 43 includes a first fixed pulley 431, a second fixed pulley 432, a third fixed pulley 433, a primary traction rope 434, and a secondary traction rope 435. The driving chamber 411 and the driven chamber 421 are located between the first fixed pulley 431 and the second fixed pulley 432. The third fixed pulley 433 is coaxially connected to the second fixed pulley 432, and the diameter of the third fixed pulley 433 is smaller than the diameter of the second fixed pulley 432. The primary traction rope 434 is sequentially connected to the driving assembly 41, bypasses the first fixed pulley 431, and is wound around the third fixed pulley 433. The secondary traction rope 435 is connected to the driven assembly 42 and is wound around the second fixed pulley 432. The winding direction of the secondary traction rope 435 relative to the second fixed pulley 432 is opposite to the winding direction of the primary traction rope 434 relative to the third fixed pulley 433. When the driving cavity 411 expands and changes due to the driven external force, the primary-side traction rope 434 is driven to move, so as to cause the driven cavity 421 to contract through the secondary-side traction rope 435 .

[0061] Specifically, when the driving cavity 411 expands and changes due to the driven external force, the main side traction rope 434 wound around the third fixed pulley 433 is partially pulled out of the third fixed pulley 433 and causes the third fixed pulley 433 to rotate in the forward direction. The second fixed pulley 432 rotates in the forward direction with the third fixed pulley 433, thereby increasing the winding length of the secondary side traction rope 435 on the second fixed pulley 432, causing the driven cavity 421 to shrink due to the inner wall partially connected to the secondary side traction rope 435 moving closer to the second fixed pulley 432.

[0062] In some embodiments, the first fixed pulley 431 and the third fixed pulley 433 are placed on the same plane outside the driving cavity 411 and the driven cavity 421 so that the extension path of the main side traction rope 434 is outside the driving cavity 411 and the driven cavity 421.

[0063] In some embodiments, the second fixed pulley 432 is located between the third fixed pulley 433 and the driven cavity 421 to reduce the length of the straightened portion of the secondary-side traction rope 435 .

[0064] In some embodiments not shown in the figure, the edge of the first fixed pulley 431 is provided with an annular groove with an opening facing radially outward to accommodate the main side traction rope 434 bypassing the first fixed pulley 431. When the main side traction rope 434 bypasses the edge of the first fixed pulley 431, it is limited by the annular groove on the edge of the first fixed pulley 431, which can prevent the main side traction rope 434 from being loosened from the edge of the first fixed pulley 431 when it is relaxed.

[0065] In some embodiments not shown in the figure, the edge of the second fixed pulley 432 is provided with an annular groove with an opening facing radially outward to accommodate the secondary traction rope 435 wound on the second fixed pulley 432. When the secondary traction rope 435 is wound on the edge of the second fixed pulley 432, it is limited by the annular groove on the edge of the second fixed pulley 432 to prevent the secondary traction rope 435 from detaching from the second fixed pulley 432 after being wound.

[0066] In some embodiments not shown in the figure, the edge of the third fixed pulley 433 is provided with an annular groove with an opening facing radially outward to accommodate the main side traction rope 434 wound on the third fixed pulley 433. When the main side traction rope 434 is wound on the edge of the third fixed pulley 433, it is limited by the annular groove on the edge of the third fixed pulley 433 to prevent the main side traction rope 434 from detaching from the third fixed pulley 433 after winding.

[0067] In some embodiments, Figure 2 As shown, the transmission assembly 43 further includes an elastic member 436, which is connected between the driven assembly 42 and the second fixed pulley 432 or the third fixed pulley 433. The elastic member 436 generates an elastic restoring force in a deformed state, and the elastic restoring force acts on the second fixed pulley 432 or the third fixed pulley 433, so that the second fixed pulley 432 or the third fixed pulley 433 has a tendency to rotate in the forward direction.

[0068] The driving assembly 41 has various structural forms.

[0069] In some embodiments, the drive assembly 41 includes a main side shell 412 and an active plate 414 movably arranged axially relative to the main side shell 412. The inner wall of the main side shell 412 cooperates with the active plate 414 to form all or part of the inner wall of the drive cavity 411, so that the space of the drive cavity 411 can change axially.

[0070] exist Figure 4In the illustrated embodiment, the driving assembly 41 includes a main side housing 412, an active plate 414 and a main side flexible member 415. The active plate 414 is movably arranged in the inner cavity of the main side housing 412. Along the moving direction of the active plate 414 relative to the main side housing 412, the active plate 414 and the main side housing 412 are sealed and connected to different parts of the main side flexible member 415 to cooperate to form a driving cavity 411 with a variable space size. The driven assembly 42 has a driven cavity 421 for accommodating fluid and having a variable space size. The transmission assembly 43 is arranged between the active plate 414 and the driven assembly 42. When the driving cavity 411 is expanded due to the driving external force, the active plate 414 withdraws from the inner cavity of the main side housing 412 and transmits the driving external force through the transmission assembly 43 to compress the driven cavity 421 and reduce it, so that the fluid in the driven cavity 421 can be discharged, and the expansion space change amount of the driving cavity 411 is smaller than the compression space change amount of the driven cavity 421. The driving chamber 411 is formed by the main side housing 412, the active plate 414 and the main side flexible member 415 being sealed and connected. The main side flexible member 415 is flexible and can be easily contracted or expanded and deformed, which facilitates the inner wall surface of the driving chamber 411 to remain intact as a whole, and is conducive to strengthening the sealing of the driving chamber 411 and preventing fluid leakage in the driving chamber 411. Since the main side flexible member 415 deforms itself during contraction or expansion, the friction with other parts is small, and the main side flexible member 415 itself is made of flexible material, so it is not easy to be damaged during operation and has a long service life.

[0071] See also Figure 4 , the moving direction of the active plate 414 relative to the main side shell 412 is the main side preset path F1, which is also the axial direction of the expansion or contraction of the drive chamber 411. The active plate 414 is connected to the transmission assembly 43, and the transmission assembly 43 moves synchronously during the movement of the active plate 414. Specifically, the main side port 413 is arranged on the main side shell 412. The surface of the active plate 414 used to form the inner wall of the drive chamber 411 is the front side, and the main side port 413 is arranged toward the front side of the active plate 414. When the fluid is injected into the drive chamber 411, the fluid is injected toward the active plate 414, so that momentum transfer occurs between the fluid and the active plate 414, the moving efficiency of the active plate 414 is accelerated, and the loss of fluid momentum is reduced. Specifically, through the direction adjustment function of the transmission assembly 43, the main side port 413 only needs to face the active plate 414, and is not limited to being located on the horizontal side or vertical upper and lower sides opened on the main side shell 412.

[0072] Please refer again Figure 4The main side flexible member 415 is cylindrical, one end of which is connected to the active board 414 or fixedly embedded in the active board 414, and the other end of which is connected to the main side housing 412 or fixedly embedded in the main side housing 412. In one embodiment, a gap is provided between the edge of the active board 414 and the inner wall of the main side housing 412 to facilitate the movement of the active board 414 in the main side housing 412. Further, the main side flexible member 415 is tapered and has a large end and a small end, the small end is connected to the active board 414, and the large end is connected to the main side housing 412.

[0073] Further, in some embodiments, the driving assembly 41 further includes a main side extension block 418 connected to the main side housing 412, and the main side extension block 418 is close to the opening side of the main side housing 412 to limit the active plate 414 exiting from the inner cavity of the main side housing 412. Specifically, the main side extension block 418 is distributed along the opening edge of the main side housing 412 to limit the range of motion of the active plate 414 on a plane perpendicular to the main side preset path F1.

[0074] exist Figure 4 In the illustrated embodiment, when the active plate 414 moves along the main side preset path F1 to go deep into the inner cavity of the main side shell 412, the space of the drive cavity 411 shrinks. When the drive cavity 411 is fully shrunk, the depth of the active plate 414 embedded in the main side shell 412 is large, and the surface of the main side flexible member 415 forms a folded relationship with the inner wall surface of the main side shell 412, so that one side surface of the main side flexible member 415 is opposite to the inner wall surface of the main side shell 412, so that the space of the drive cavity 411 is smaller than the inner cavity space of the main side shell 412. When the fluid is injected, the active plate 414 moves along the main side preset path F1 to exit the inner cavity of the main side shell 412, and the space of the drive cavity 411 expands. When the driving cavity 411 is fully expanded, the active plate 414 leaves the inner cavity range of the main side shell 412, and the main side flexible member 415 turns over to the outside of the main side shell 412, so that the space of the driving cavity 411 is equal to the sum of the space surrounded by the main side flexible member 415 after turning outward and the inner cavity space of the main side shell 412. Since the space of the driving cavity 411 is limited by the inner wall of the main side shell 412 in the radial direction of the active track of the active plate 414, the space expansion of the driving cavity 411 is mainly caused by the movement of the active plate 414 relative to the main side shell 412, and the driving cavity 411 mainly expands along the main side preset path F1.

[0075] exist Figure 2 and Figure 3In the illustrated embodiment, the two conical surfaces of the main side flexible member 415 are interchanged in the inner and outer directions during the flipping process. Specifically, when the driving cavity 411 is fully contracted, one conical surface of the main side flexible member 415 faces the inner wall of the main side shell 412 and faces away from the active plate 414, and the other conical surface faces the active plate 414. Since one conical surface of the main side flexible member 415 and the inner wall of the main side shell 412 serve together as the inner wall surface of the driving cavity 411, when one conical surface of the main side flexible member 415 and the inner wall of the main side shell 412 are opposite, the inner wall surface of the driving cavity 411 is in a gathered state. When the driving cavity 411 is fully expanded, the main side flexible member 415 flips over, and the conical surface of the main side flexible member 415 that originally faces away from the active plate 414 changes to face the active plate 414, and the conical surface of the main side flexible member 415 that originally faces the active plate 414 changes to face away from the active plate 414. After the large end of the main side flexible member 415 is connected to the main side shell 412, the flipping movement direction of the small end of the main side flexible member 415 is parallel to the main side preset path F1, so that the active plate 414 can be guided to move relative to the main side shell 412 along the main side preset path F1. Further, the width of the gap between the edge of the active plate 414 and the inner wall of the main side shell 412 is greater than the thickness of the main side flexible member 415. In one embodiment, the width of the gap between the edge of the active plate 414 and the inner wall of the main side shell 412 is greater than twice the thickness of the main side flexible member 415. In this way, when the active plate 414 moves to the connection position between the main side flexible member 415 and the main side shell 412, the main side flexible member 415 itself is prevented from overlapping and being squeezed between the edge of the active plate 414 and the inner wall of the main side shell 412, thereby preventing the main side flexible member 415 from being blocked relative to the main side shell 412.

[0076] exist Figure 4 In the illustrated embodiment, the first fixed pulley 431 is disposed on the outer side of the main-side housing 412 , and the rotating shaft of the first fixed pulley 431 is connected to the outer wall of the main-side housing 412 .

[0077] In some embodiments, the main side traction rope 434 is connected to the edge of the active plate 414, and the transmission assembly 43 is arranged in pairs on both sides of the driving assembly 41 or the driven assembly 42. More specifically, one end of the main side traction rope 434 is connected to the middle of the edge of the active plate 414 to balance the force point of the active plate 414 and prevent the active plate 414 from tilting in the opposite direction during movement. The main side traction rope 434 is fixedly connected to the third fixed pulley 433 at the other end and then coiled on the third fixed pulley 433.

[0078] Since the main side flexible member 415 and the active plate 414 need to be accommodated in the main side shell 412 when the driving cavity 411 contracts, the cross-sectional area of ​​the inner cavity of the main side shell 412 perpendicular to the main side preset path F1 is the maximum cross-sectional area of ​​the driving cavity 411 perpendicular to the main side preset path F1.

[0079] The driving assembly 41 is not limited to being composed of the main side housing 412, the active plate 414 or the main side flexible member 415, and can also be any structural form that can form a driving cavity 411 with a variable space size for accommodating fluid.

[0080] In some embodiments, the driven assembly 42 includes a secondary housing 425 and a driven plate 427 movably arranged relative to the secondary housing 425 in the axial direction. The inner wall of the secondary housing 425 cooperates with the driven plate 427 to form all or part of the inner wall of the driven cavity 421, so that the space of the driven cavity 421 can be changed in the axial direction. The primary traction rope 434 is sequentially connected to the active plate 414, bypasses the first fixed pulley 431, and coils around the third fixed pulley 433. The secondary traction rope 435 is connected to the driven plate 427 and coils around the second fixed pulley 432.

[0081] exist Figure 4 In the illustrated embodiment, the driven assembly 42 includes a secondary housing 425, a driven plate 427 and a secondary flexible member 428. The driven plate 427 is movably arranged in the inner cavity of the secondary housing 425, and the secondary flexible member 428 is connected between the secondary housing 425 and the driven plate 427. The moving direction of the driven plate 427 relative to the secondary housing 425 is the secondary preset path F2, which is also the axial direction of expansion or contraction of the driven cavity 421. Along the axial direction of the driven cavity 421, that is, the secondary preset path F2, the driven plate 427 and the secondary housing 425 are sealed and connected to different parts of the secondary flexible member 428 to cooperate and form the driven cavity 421. The driven plate 427 is connected to the transmission assembly 43, and during the movement of the driven plate 427, the transmission assembly 43 moves synchronously. The secondary housing 425 is provided with a secondary port 426 connected to the driven chamber 421, and the fluid flows into or out of the driven chamber 421 through the secondary port 426. The secondary flexible member 428 is cylindrical, one end of which is connected to the driven plate 427 or fixedly embedded in the driven plate 427, and the other end of which is connected to the secondary housing 425 or fixedly embedded in the secondary housing 425. In one embodiment, a gap is provided between the edge of the driven plate 427 and the inner wall of the secondary housing 425, so as to facilitate the movement of the driven plate 427 in the secondary housing 425. Furthermore, the secondary flexible member 428 is tapered and has a large end and a small end, the small end is connected to the driven plate 427, and the large end is connected to the secondary housing 425.

[0082] Furthermore, in some embodiments, the driven assembly 42 further includes a secondary extension block 429 connected to the secondary housing 425, and the secondary extension block 429 is close to the opening side of the secondary housing 425 to limit the driven plate 427 exiting from the inner cavity of the secondary housing 425. Figure 4In the illustrated embodiment, the secondary side extension block 429 is integrated with the primary side extension block 418. The primary side housing 412 and the secondary side housing 425 are semi-enclosed structures. The openings of the primary side housing 412 and the secondary side housing 425 are opposite and connected to each other, and are connected to each other through the secondary side extension block 429 and the primary side extension block 418. Further, an air hole 4181 is provided on the primary side extension block 418 or the secondary side extension block 429 to facilitate airflow in and out of the integrated inner cavity.

[0083] When the driving chamber 411 is expanded, the movement of the driven plate 427 deep into the secondary housing 425 is hindered by the inner wall of the secondary housing 425, thereby limiting the movement of the active plate 414 relative to the primary housing 412 and the further expansion of the driving chamber 411. When the driven chamber 421 is expanded, the movement of the active plate 414 deep into the primary housing 412 is hindered by the inner wall of the primary housing 412, thereby limiting the movement of the driven plate 427 relative to the secondary housing 425 and the further expansion of the driven chamber 421.

[0084] Since the secondary side flexible member 428 and the driven plate 427 need to be accommodated in the secondary side housing 425 when the driven cavity 421 contracts, the cross-sectional area of ​​the inner cavity of the secondary side housing 425 perpendicular to the secondary side preset path F2 is the maximum cross-sectional area of ​​the driven cavity 421 perpendicular to the secondary side preset path F2. Figure 4 In the illustrated embodiment, by making the maximum cross-sectional area of ​​the driving chamber 411 perpendicular to the primary-side preset path F1 smaller than the maximum cross-sectional area of ​​the driven chamber 421 perpendicular to the secondary-side preset path F2, when the active plate 414 and the driven plate 427 move the same distance, the expansion space change of the driving chamber 411 is smaller than the compression space change of the driven chamber 421, or the compression space change of the driving chamber 411 is smaller than the expansion space change of the driven chamber 421.

[0085] In some embodiments not shown in the figure, the driven assembly 42 is not limited to being composed of the secondary housing 425, the driven plate 427 and the secondary flexible member 428, and the driven assembly 42 may also adopt other structural forms capable of forming the driven cavity 421. The transmission member is not limited to a single component, and the transmission assembly 43 may be any structure that compresses the driven cavity 421 as the driving cavity 411 expands.

[0086] Since the secondary side flexible member 428 and the driven plate 427 need to be accommodated in the secondary side shell 425 when the driven cavity 421 contracts, the cross-sectional area of ​​the inner cavity of the secondary side shell 425 perpendicular to the secondary side preset path F2 is the maximum cross-sectional area of ​​the driven cavity 421 perpendicular to the secondary side preset path F2.

[0087] exist Figure 4In the illustrated embodiment, the second fixed pulley 432 and the third fixed pulley 433 are disposed outside the secondary housing 425 , and the second fixed pulley 432 and the third fixed pulley 433 rotate relative to the secondary housing via the same shaft connected to the outer wall of the secondary housing 425 .

[0088] The driven component 42 is not limited to being composed of the secondary side housing 425, the driven plate 427 or the secondary side flexible member 428, and can also be any structural form that can form a driven cavity 421 with a variable space size for accommodating fluid.

[0089] In some embodiments, one end of the secondary traction rope 435 is connected to the middle of the edge of the driven plate 427 to balance the force point of the driven plate 427 and prevent the driven plate 427 from tilting in the opposite direction during movement. The secondary traction rope 435 is fixedly connected to the second fixed pulley 432 at the other end and then coiled on the second fixed pulley 432.

[0090] exist Figure 2 In the illustrated embodiment, the elastic member 436 is a torsion spring, and one end of the elastic member 436 is connected to the secondary housing 425, and the other end is connected to the second fixed pulley 432. Before the water stored in the driven chamber 421 is fully discharged, the elastic member 436 is in a deformed state, so that the third fixed pulley 433 has a tendency to reel in the secondary traction rope 435.

[0091] In some embodiments not shown in the figures, the elastic member 436 may also act between the secondary housing 425 and the third pulley.

[0092] exist Figure 2 In the illustrated embodiment, fluid is injected into the driven chamber 421 in advance to fully expand the internal space of the driven chamber 421, and the driving chamber 411 is emptied in advance to put the driving chamber 411 in a contracted state. After the fluid supply source 700 generating the driving external force injects fluid into the driving chamber 411 through the main side port 413, the active plate 414 moves in the direction of exiting the inner cavity of the main side housing 412 under the pressure of the fluid in the driving chamber 411, and the space in the driving chamber 411 increases. When the active plate 414 moves, it tractions the main side traction rope 434. The length of the straightened portion of the main side traction rope 434 between the active plate 414 and the first fixed pulley 431 increases, and the length of the straightened portion of the main side traction rope 434 between the first fixed pulley 431 and the third fixed pulley 433 remains unchanged. The portion of the main side traction rope 434 wound around the third fixed pulley 433 is pulled away from the third fixed pulley 433 due to the traction of the active plate 414, causing the third fixed pulley 433 to rotate in the forward direction. Figure 2, the forward rotation is the clockwise rotation. The second fixed pulley 432 rotates synchronously with the third fixed pulley 433, so that the portion of the secondary side traction rope 435 that is wound around the edge of the second fixed pulley 432 increases, while the portion of the secondary side traction rope 435 that is straightened between the driven plate 427 and the second fixed pulley 432 decreases. The driven plate 427 moves in the direction of penetrating into the secondary side housing 425, so that the space of the driven chamber 421 shrinks, and the fluid in the driven chamber 421 is discharged from the secondary side port 426. Since the diameter of the third fixed pulley 433 is smaller than the diameter of the second fixed pulley 432, the speed of winding the secondary side traction rope 435 is greater than the speed of withdrawing the primary side traction rope 434, so that the moving speed of the driven plate 427 is greater than the moving speed of the active plate 414. When the difference in average cross-sectional area between the driven chamber 421 and the driving chamber 411 is negligible, the spatial variation of the driven chamber 421 can be made greater than that of the driving chamber 411, so that the driven chamber 421 can discharge a larger volume of fluid, thereby solving the problem of the main body 30 of the bathroom equipment 100 not being rinsed cleanly under low water pressure.

[0093] exist Figure 3 In the illustrated embodiment, after the drainage step is completed, fluid is injected into the driven chamber 421. Under the pressure of the fluid, the driven plate 427 moves in the direction of exiting the inner chamber of the secondary housing 425, and the space in the driven chamber 421 increases. The driven plate 427 tractions the secondary traction rope 435 when moving, and the length of the straightened portion of the secondary traction rope 435 between the driven plate 427 and the second fixed pulley 432 increases. The portion of the secondary traction rope 435 wound around the second fixed pulley 432 is pulled away from the second fixed pulley 432 due to the traction of the driven plate 427, causing the second fixed pulley 432 to rotate in the reverse direction. Figure 3 , reverse rotation is counterclockwise rotation. The third fixed pulley 433 rotates synchronously with the second fixed pulley 432, so that the portion of the main side traction rope 434 that is wound around the edge of the third fixed pulley 433 increases, while the portion of the main side traction rope 434 that is straightened between the active plate 414 and the first fixed pulley 431 decreases. The active plate 414 moves in the direction of penetrating into the main side housing 412, shrinking the space of the drive chamber 411, so that the fluid in the drive chamber 411 flows from the main side port 413 to the driven chamber 421.

[0094] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described 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.

[0095] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A flushing mechanism, characterized in that: include: A driving assembly having a driving cavity with a variable size for accommodating a fluid; A driven component has a driven cavity for accommodating a fluid and having a variable space size; The spaces of the driven chamber and the driving chamber can be changed in the axial direction; and A transmission assembly, the transmission assembly comprising a first fixed pulley, a second fixed pulley, a third fixed pulley, a primary traction rope and a secondary traction rope; the third fixed pulley is coaxially connected to the second fixed pulley, and the diameter of the third fixed pulley is smaller than the diameter of the second fixed pulley; the primary traction rope is sequentially connected to the driving assembly, bypasses the first fixed pulley and winds around the third fixed pulley; the secondary traction rope is connected to the driven assembly and winds around the second fixed pulley; the winding direction of the secondary traction rope relative to the second fixed pulley is opposite to the winding direction of the primary traction rope relative to the third fixed pulley; when the driving cavity expands and changes due to the driven external force, it drives the primary traction rope to move, so as to cause the driven cavity to contract through the secondary traction rope.

2. The flushing mechanism according to claim 1, characterized in that: When the driving cavity expands and changes due to the driven external force, the primary side traction rope portion wound around the third fixed pulley is pulled away from the third fixed pulley and causes the third fixed pulley to rotate in the forward direction, and the second fixed pulley increases the winding length of the secondary side traction rope on the second fixed pulley as the third fixed pulley rotates in the forward direction, so that the driven cavity contracts because the portion partially connected to the secondary side traction rope moves closer to the second fixed pulley.

3. The flushing mechanism according to claim 2, characterized in that: The transmission assembly also includes an elastic member, which is connected between the driven assembly and the second fixed pulley or the third fixed pulley; the elastic member generates an elastic restoring force in a deformed state, and the elastic restoring force acts on the second fixed pulley or the third fixed pulley, so that the second fixed pulley or the third fixed pulley has a tendency to rotate in the forward direction.

4. The flushing mechanism according to claim 1, characterized in that: The first fixed pulley and the third fixed pulley are placed on the same plane outside the driving cavity and the driven cavity, so that the extension path of the main-side traction rope is placed outside the driving cavity and the driven cavity.

5. The flushing mechanism according to claim 4, characterized in that: The second fixed pulley is located between the third fixed pulley and the driven chamber to reduce the length of the straightened portion of the secondary-side traction rope.

6. The flushing mechanism according to claim 1, characterized in that: Also includes at least one of the following technical features: The edge of the first fixed pulley is provided with an annular groove opening toward the radial outside to accommodate the main side traction rope passing around the first fixed pulley; The edge of the second fixed pulley is provided with an annular groove opening toward the radial outside to accommodate the secondary traction rope wound on the second fixed pulley; An annular groove with an opening facing radially outward is provided on the edge of the third fixed pulley to accommodate the main-side traction rope wound on the third fixed pulley.

7. The flushing mechanism according to claim 1, characterized in that: The driving component includes a main side shell and an active plate movably arranged relative to the main side shell in the axial direction, and the inner wall of the main side shell cooperates with the active plate to form all or part of the inner wall of the driving cavity, so that the space of the driving cavity can be changed in the axial direction; the driven component includes the secondary side shell and a driven plate movably arranged relative to the secondary side shell in the axial direction, and the inner wall of the secondary side shell cooperates with the driven plate to form all or part of the inner wall of the driven cavity, so that the space of the driven cavity can be changed in the axial direction; the main side traction rope is connected to the active plate in sequence, bypasses the first fixed pulley and coils around the third fixed pulley; the secondary side traction rope is connected to the driven plate and coils around the second fixed pulley.

8. The flushing mechanism according to claim 7, characterized in that: The primary shell and the secondary shell are in a semi-enclosed structure; the openings of the primary shell and the secondary shell are opposite to each other and are connected to each other.

9. A drainage device, characterized in that: include: A flushing mechanism as claimed in any one of claims 1 to 8 and a regulating component connected to the flushing mechanism; the regulating component is used to control the on-off between the driving chamber and the fluid supply source, and the fluid input into the driving chamber generates a driving external force on the driving chamber to expand the driving chamber; The regulating component is also used to adjust the fluid replenishment of the driven chamber; after the compression of the driven chamber is completed or interrupted, the regulating component is also used to guide the fluid of the driving chamber to replenish the driven chamber.

10. A bathroom equipment, characterized in that: include: A drainage device as described in claim 9 and a main body connected to the drainage device; the main body is provided with a liquid pool, and a sewage outlet is provided at the bottom of the liquid pool, and the fluid discharged from the dynamic cavity is output to the liquid pool or the sewage outlet of the main body to flush the inner wall of the liquid pool or discharge the dirt from the sewage outlet.

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