Mechanical linkage device for automatic flushing of closestool

Abstract

The invention discloses a mechanical linkage device for automatic flushing of a closestool, which realizes an electroless delayed flushing function and comprises a shell, a power component, a first sliding part, a first elastic part, a movable component and a second elastic part, the first sliding piece is slidably matched in the shell, and two ends of the first sliding piece are matched with the output end of the power assembly and the first elastic piece respectively; the movable assembly and the first sliding piece are in sliding fit in the shell, and a first clamping part and a second clamping part are arranged on the opposite sides of the first sliding piece and the movable assembly; the second elastic piece is arranged in the shell and acts on a movable assembly which is in transmission with the mechanical washing mechanism; the power assembly pushes the first sliding piece to move and compresses the first elastic piece when outputting power. When the power assembly restores the standby state, the first elastic piece releases the stored energy and drives the first sliding piece to reset, flushing is achieved through clamping of the first clamping part and the second clamping part, and the second elastic piece is compressed; when the first clamping part and the second clamping part are separated, energy stored by the second elastic piece is released so that the movable assembly can reset.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of bathroom equipment, in particular to a mechanical linkage device for automatic flushing of a toilet. BACKGROUND

[0002] In daily life, people usually need to manually press the flush button to remove the dirt in the toilet bowl after using the toilet. The intelligent toilet can activate the electromagnetic valve flushing system automatically through the preset circuit board program after sensing the user leaving the seat, realizing automatic flushing without manual operation, and greatly improving the convenience of use.

[0003] However, these automatic flushing systems rely on power drive, and once the battery is depleted (for built-in battery type) or power is off (for plug-in type), the automatic flushing function will not be executed, and the use is limited. In addition, although the intelligent toilet technology is increasingly mature, it has not been widely popularized. Most families still use traditional toilets, and if they want to upgrade to intelligent toilets with automatic flushing function, they will face high modification cost, which to some extent hinders the popularization of automatic flushing toilets. SUMMARY

[0004] The purpose of the present application is to provide a mechanical linkage device for automatic flushing of a toilet, to solve the problems existing in the prior art, to realize the automatic flushing function of the toilet without power drive, to meet the needs of specific application scenarios, and to improve the user experience.

[0005] In order to achieve the above purpose, the solution of the present application is: A mechanical linkage device for automatic flushing of a toilet, comprising a housing, a power assembly, a first sliding member, a first elastic member, a movable assembly and a second elastic member; the power assembly outputs power under external pressure change or restores standby state; the first sliding member is slidingly fitted in the housing, and the two ends thereof are respectively fitted with the output end of the power assembly and the first elastic member; the movable assembly is slidingly fitted in the housing with the first sliding member, and the opposite sides of the first sliding member and the movable assembly are provided with a first clamping portion and a second clamping portion that can be clamped or separated with each other; the second elastic member is arranged in the housing and acts on the movable assembly; the movable assembly is in transmission connection with a mechanical flushing mechanism of the toilet; when the power assembly outputs power, it pushes the first sliding member to move and compresses the first elastic member, so that the first elastic member stores energy; when the power assembly restores standby state, the first elastic member releases the stored energy and drives the first sliding member to reset, and then the first clamping portion clamps the second clamping portion to drive the movable assembly to slide so that the mechanical flushing mechanism of the toilet is opened, and at the same time the movable assembly compresses the second elastic member to store energy in the second elastic member; when the second clamping portion is separated from the first clamping portion, the stored energy of the second elastic member is released to push the movable assembly to reset.

[0006] The power assembly comprises a piston rod, a liquid capsule, a hydraulic valve body, a piston seat and a diaphragm; the piston rod is arranged opposite to the end of the first sliding member; the liquid capsule is arranged on the bottom surface of a toilet seat; the hydraulic valve body is installed in the housing, and the two ends thereof are respectively communicated with the liquid capsule and the piston seat; the diaphragm is arranged at the communication position of the piston seat and the hydraulic valve body; the piston rod is movably arranged in the piston seat and abuts against the diaphragm.

[0007] Preferably, the power assembly further comprises a three-way adapter, a one-way valve and a connecting pipe; the three-way adapter is connected between the hydraulic valve body and the liquid capsule; the one-way valve is arranged in the hydraulic valve body and sealingly fitted with the inner wall of the hydraulic valve body; the two ends of the connecting pipe are respectively connected with the three-way adapter and the hydraulic valve body and communicated to the two sides of the one-way valve; the cross-sectional area of the connecting pipe is smaller than that of the hydraulic valve body. Alternatively, the power assembly further comprises a one-way valve, a communication seat, a communication pipe and a sealing cover; the communication seat is arranged in the hydraulic valve body and provided with two passages, both of which are respectively communicated with the input end and the output end of the hydraulic valve body; the one-way valve and the communication pipe are respectively sealingly installed in the two passages; the sealing cover sealingly covers the opening of the hydraulic valve body.

[0008] The power assembly comprises a button seat, an exhaust nozzle, a button and a gas pressure valve body; the button seat is arranged on the bottom surface of the toilet seat and is provided with a gas cavity; the exhaust nozzle is arranged on the button seat; the button is movably arranged in the gas cavity and blocks the exhaust nozzle when pressed; the gas pressure valve body is arranged in the shell and is communicated with the gas cavity and the exhaust nozzle through gas pipes; and the end of the first sliding member movably penetrates the gas pressure valve body.

[0009] Preferably, the seat body is provided with a movable seat which movably cooperates with the inner wall of the gas cavity; the button movably penetrates the cover body and is detachably connected with the movable seat; the inner side of the movable seat is provided with a leather cup which movably cooperates with the inner wall of the gas cavity; and the fourth spring is arranged between the leather cup and the seat body.

[0010] Preferably, the circumferential surface of the first sliding member is sleeved with a plurality of sealing rings for movably sealing the end of the first sliding member and the inner wall of the gas pressure valve body; the power assembly further comprises a one-way valve and a connecting head; the one-way valve is arranged in the gas pressure valve body and movably cooperates with the inner wall of the gas pressure valve body; the connecting head is arranged in the shell and is detachably connected with the gas pressure valve body; the communication positions of the gas cavity, the exhaust nozzle and the gas pressure valve body are respectively located at the two ends of the one-way valve; and the button seat is provided with a sealing gasket opposite to the exhaust nozzle.

[0011] The movable assembly comprises a second sliding member movably arranged in the shell and a swing block pivotally connected with the second sliding member; the second sliding member is provided with an output power output rod; the second clamping part is arranged on the opposite side of the swing block and the first sliding member; and the two ends of the second elastic member respectively abut against the inner wall of the shell and the swing block.

[0012] Preferably, the mechanical linkage further comprises a pressing block and a third spring; the pressing block is movably arranged in the shell and is opposite to the end of the swing block away from the second sliding member; the pressing block and the first sliding member are respectively located on the two sides of the swing block; and the third spring is arranged between the inner wall of the shell and the pressing block to make the pressing block abut against the end side of the swing block.

[0013] Preferably, the side of the end of the swing block away from the second sliding member and opposite to the first sliding member is provided with a guide slope; the inner wall of the shell is provided with a guide slope opposite to the guide slope; when the second sliding member and the swing block are driven by the first sliding member to compress the second elastic member, the guide slope drives the swing block to swing after contacting the guide slope, so that the second clamping part is separated from the first clamping part.

[0014] The movable assembly comprises a second slider slidingly fitted in the shell, a swing block pivotally fitted with the second slider, and a hook member and an elastic sheet; the second slider is provided with an output rod for outputting power; the hook member is movably fitted on the opposite side of the swing block and the first slider, and is provided with a second clamping portion clamping with the first clamping portion; the elastic sheet is arranged in the swing block to provide elastic force to reset the hook member to the direction of the first clamping portion; the two ends of the second elastic member abut against the inner wall of the shell and the swing block, respectively.

[0015] Preferably, the side of the swing block away from the one end of the second slider and facing away from the first slider is provided with a second inclined surface, and the inner wall of the shell is provided with a first convex point opposite to the second inclined surface; after the first convex point abuts against the second inclined surface, the swing block is allowed to swing in the direction away from the first slider.

[0016] Preferably, the side of the swing block away from the one end of the second slider and facing the first slider is provided with a third inclined surface, and the inner wall of the shell is provided with a second convex point opposite to the third inclined surface; after the second convex point abuts against the third inclined surface, the swing block is driven to swing in the direction away from the first slider.

[0017] The mechanical flushing mechanism is a pilot valve, and the output rod of the movable assembly acts on a sealing diaphragm of the pilot valve to change the state of the sealing diaphragm: when the output rod is retracted, the sealing diaphragm is in an open state; when the output rod is extended, the sealing diaphragm is in a closed state. Alternatively, the mechanical flushing mechanism comprises a pull rope and a drain valve, and the two ends of the pull rope are connected with the movable assembly and a stopper of the drain valve, respectively.

[0018] After the above technical scheme is adopted, the application has the following technical effects: (1) The power assembly of the application converts the pressure applied by the user into power of the first slider, and the clamping and disengaging state between the first clamping portion of the first slider and the second clamping portion of the movable assembly can realize linkage and disengagement of the two, and the first slider and the movable assembly also have corresponding springs for driving reset, thereby forming a complete delay driving logic of the mechanical flushing mechanism of the toilet.

[0019] (2) The mechanical linkage device of the application can be installed in any type of toilet (ordinary or intelligent) for modification or upgrading, and the power output by the movable assembly is linked with the mechanical flushing mechanism of the toilet to realize automatic opening of the water tank / water bag drain, so as to realize automatic drainage and flushing after the user finishes defecating and leaves the seat.

[0020] (3) The present application is a pure mechanical structure design, without power drive, convenient to use, simple structure, low cost, easy to market.

[0021] (4) The present application can also be adjusted by adjusting the position of the first clamping part, the second clamping part on the corresponding part and the coefficient of each spring, realizing the adjustment of the time length before the first clamping part and the second clamping part contact in the reset process of the first sliding piece, and then realizing the adjustment of the delay length of the delayed flushing, higher flexibility. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a perspective view of a product applied with the first embodiment of the present application.

[0023] Figure 2 It is an exploded view of the first embodiment of the present application.

[0024] Figure 3 It is a standby state schematic view of the first embodiment of the present application.

[0025] Figure 4 It is a state schematic view of the human body sitting of the first embodiment of the present application.

[0026] Figure 5 It is a pressure bag opening state schematic view of the first embodiment of the present application.

[0027] Figure 6 It is a swing block about to separate state schematic view of the first embodiment of the present application.

[0028] Figure 7 It is a structure schematic view of the second embodiment of the present application.

[0029] Figure 8 It is a perspective view of a product applied with the third embodiment of the present application.

[0030] Figure 9 It is an exploded view of the third embodiment of the present application.

[0031] Figure 10 It is a standby state schematic view of the third embodiment of the present application.

[0032] Figure 11 It is a state schematic view of the human body sitting of the third embodiment of the present application.

[0033] Figure 12 It is a pressure bag opening state schematic view of the third embodiment of the present application.

[0034] Figure 13 It is a swing block separation state schematic view of the third embodiment of the present application.

[0035] Figure 14 It is an exploded view of the fourth embodiment of the present application.

[0036] Figure 15 The standby state schematic view of the fourth embodiment of the present application.

[0037] Figure 16 The human body sitting state schematic view of the fourth embodiment of the present application.

[0038] Figure 17 The pressure bag opening state schematic view of the fourth embodiment of the present application.

[0039] Figure 18 The swing block disengaging state schematic view of the fourth embodiment of the present application.

[0040] Figure 19 The structure schematic view of the fifth embodiment of the present application.

[0041] Figure 20 The structure schematic view of the sixth embodiment of the present application.

[0042] Figure 21 The standby state schematic view of the seventh embodiment of the present application.

[0043] Figure 22 The human body sitting state schematic view of the seventh embodiment of the present application.

[0044] Figure 23 The standby state schematic view of the eighth embodiment of the present application.

[0045] Figure 24 The human body sitting state schematic view of the eighth embodiment of the present application.

[0046] BRIEF DESCRIPTION OF THE DRAWINGS 1 - shell; 11 - upper shell; 12 - lower shell; 121 - first sliding groove; 122 - second sliding groove; 123 - first positioning column; 124 - second positioning column; 125 - third sliding groove; 126 - guide slope; 127 - first convex point; 128 - second convex point; 2 - power assembly; 21 - piston rod; 22 - liquid capsule; 23 - hydraulic valve body; 24 - piston seat; 25 - diaphragm; 26 - three-way adapter; 27 - one-way valve; 28 - connecting pipe; 29 - button seat; 291 - air cavity; 292 - seat body; 293 - cover body; 210 - exhaust nozzle; 220 - button; 230 - air pressure valve body; 240, 240' - air pipe; 250 - movable seat; 260 - leather cup; 270 - fourth spring; 280 - connecting head; 290 - sealing gasket; 2100 - communication seat; 2200 - communication pipe; 2300 - sealing cover; 2400 - sealing plug; 3 - first sliding member; 31 - first clamping portion; 32 - first installation cavity; 4 - first elastic member; 5-movable assembly; 51-second sliding member; 511-output rod; 52-rocker block; 521-second clamping portion; 522-second mounting cavity; 523-first inclined surface; 524-second inclined surface; 525-third inclined surface; 53-hook member; 531-second clamping portion; 54-spring piece; 6-second elastic member; 7-pressing block; 71-pressing rod; 8-third spring; 9-sealing ring; a-toilet seat; b-pilot valve; c-sealing diaphragm; d-pull rope; e-drain valve; f-water stop plug. DETAILED DESCRIPTION

[0047] In order to further explain the technical solutions of the present application, the present application will be described in detail below through specific embodiments.

[0048] REFERENCE Figures 1 to 24 As shown in the drawings, the present application discloses a mechanical linkage device for automatic flushing of a toilet, comprising a shell 1, a power assembly 2, a first sliding member 3, a first elastic member 4, a movable assembly 5 and a second elastic member 6; The shell 1 is the housing part of the mechanical linkage device, which is generally not movable after installation, and is used to cooperate with other parts of the mechanical linkage device to realize assembly. For example, in several embodiments of the present application, the shell 1 is installed near the shaft seat of the toilet seat a, which can be inside or beside the shaft seat; The power assembly 2 outputs power under external pressure change or restores standby state; The first sliding member 3 is slidingly fitted in the shell 1, and the two ends thereof are respectively fitted with the output end of the power assembly 2 and the first elastic member 4; The movable assembly 5 is slidingly fitted in the shell 1 with the first sliding member 3, and the opposite sides of the first sliding member 3 and the movable assembly 5 are provided with first clamping portion 31 and second clamping portion 521 which can be clamped or separated from each other; The second elastic member 6 is arranged in the shell 1 and acts on the movable assembly 5; The movable assembly 5 is drivingly connected with the mechanical flushing mechanism of the toilet; Specifically, the movable assembly 5 and the first sliding member 3 are preferably sliding side by side; The power assembly 2 outputs power (corresponding to the state of the user sitting down) to push the first sliding piece 3 to move and compress the first elastic piece 4, so that the first elastic piece 4 stores energy; when the power assembly 2 returns to the standby state (corresponding to the state of the user getting up), the first elastic piece 4 releases the stored energy and drives the first sliding piece 3 to reset, and then the first clamping part 31 clamps the second clamping part 521 to drive the movable assembly 5 to slide to open the mechanical flushing mechanism of the closestool, and at the same time, the movable assembly 5 also compresses the second elastic piece 6 to store energy, that is, the movable assembly 5 at this time serves as a power output mechanism of the mechanical linkage device to link and control the mechanical flushing mechanism of the closestool; when the second clamping part 521 is separated from the first clamping part 31, the stored energy of the second elastic piece 6 is released to drive the movable assembly 5 to reset.

[0049] Through the above scheme, the power assembly 2 converts the pressure applied by the user into the power of the first sliding piece 3, the clamping and separation state between the first clamping part 31 of the first sliding piece 3 and the second clamping part 521 of the movable assembly 5 can realize the linkage and separation of the two, and the first sliding piece 3 and the movable assembly 5 are also respectively driven to reset by the corresponding springs, thereby forming a complete delay driving logic of the mechanical flushing mechanism of the closestool. Figures 3 to 6 、 Figures 10 to 13 As shown in Figures 15 to 18 , when the pressure receiving end of the power assembly 2 is arranged on the closestool near the position where the user sits down, such as being arranged on the closestool seat a, the pressure received by the power assembly 2 can be converted into the energy storage of the first elastic piece 4 when the user sits down, and when the user gets up, the energy storage of the first elastic piece 4 is released, so that the movable assembly 5 is driven by the first clamping part 31 and the second clamping part 521 to output power outward, thereby realizing linkage to open the mechanical flushing mechanism of the closestool and achieving the purpose of automatic flushing after the user gets up; after the movable assembly 5 is driven to slide a certain distance by the first sliding piece 3, the second clamping part 521 is separated from the first clamping part 31, and the movable assembly 5 is reset under the driving of the second elastic piece 6, thereby realizing linkage to close the mechanical flushing mechanism of the closestool and completing the whole automatic flushing action.

[0050] According to the above action process, the mechanical linkage device of the application can be installed on any type of closestool (ordinary or intelligent) for modification or upgrading, and the power output by the movable assembly 5 is linked with the mechanical flushing mechanism of the closestool to realize automatic opening of the water tank / water bag drain, so that automatic drainage and flushing are realized after the user finishes defecating and gets up.

[0051] Meanwhile, the application is a pure mechanical structure design, which does not need to be driven by electricity, is convenient to use, has simple structure and low cost, and is convenient for market promotion.

[0052] In addition, the application can also realize the adjustment of the time difference from the start of the reset of the first clamping part 31 to the contact with the second clamping part 521 in the reset process of the first sliding piece 3 by adjusting the positions of the first clamping part 31 and the second clamping part 521 on the corresponding parts and the coefficients of the springs, and further realize the adjustment of the delay length of the automatic drainage flushing, and the flexibility is higher. It can be understood that the shorter the above-mentioned time difference is, the faster the drainage flushing will start after the user leaves, which can be infinitely close to "no delay", that is, the "immediate flushing after leaving" function is realized; on the contrary, if the above-mentioned time difference is designed to be relatively long (for example, 5-10s), the flushing function will be started after the user leaves for a certain length of time, which can avoid the splashing of the flushing water to the user.

[0053] In some embodiments of the application, the shell 1 includes an upper shell 11 and a lower shell 12 assembled by a detachable buckle connection, which facilitates the molding of a groove structure for installing other components, and the overall product is easier to assemble; the lower shell 12 is provided with a first sliding groove 121 and a second sliding groove 122 for sliding cooperation of the first sliding piece 3 and the movable assembly 5, respectively, and the first sliding groove 121 and the second sliding groove 122 are parallel and communicated.

[0054] Further, the end surface of the first sliding groove 121 is provided with a first positioning column 123, the first sliding piece 3 is provided with a first mounting cavity 32, and the two ends of the first elastic piece 4 are matched with the first positioning column 123 and the first mounting cavity 32, respectively, to realize the positioning cooperation of the two ends of the first elastic piece 4 and ensure the position stability of the first elastic piece 4.

[0055] Reference Figures 1 to 6 As shown in the figure, the first embodiment of the application is shown.

[0056] In the first embodiment, the power assembly 2 described above is a hydraulic power mechanism, which comprises a piston rod 21, a liquid bag 22, a hydraulic valve body 23, a piston seat 24 and a diaphragm 25; the piston rod 21 is arranged opposite to the end of the first sliding piece 3; the liquid bag 22 can be arranged at a position required by the user, preferably at a position close to the front end of the bottom surface of the toilet seat a, so that the user can naturally apply pressure to the liquid bag 22 after sitting down during the process of using the toilet, thereby starting the mechanical linkage without active operation, and being able to give the user a sense of "automation"; the hydraulic valve body 23 is installed in the shell 1, and the two ends thereof are respectively communicated with the liquid bag 22 and the piston seat 24; the diaphragm 25 is arranged at the communication position between the piston seat 24 and the hydraulic valve body 23; and the piston rod 21 is movably arranged in the piston seat 24 and abuts against the diaphragm 25. Thus, when the user sits down, the liquid bag 22 is pressed, the water in the liquid bag 22 is squeezed out, the pressure in the hydraulic valve body 23 is increased, the pressure acts on the diaphragm 25, and the piston rod 21 is pushed out by the diaphragm 25; and when the user stands up, the liquid bag 22 is no longer pressed, the pushing force acting on the piston rod 21 is reduced, and the piston rod 21 is pushed back to the original position under the action of the first elastic piece 4. The number of the liquid bags 22 can be two, and the two liquid bags 22 are arranged at the two sides of the front end of the toilet seat a, and the two liquid bags 22 are communicated, and then one of the two liquid bags 22 is communicated with the hydraulic valve body 23 through a water pipe.

[0057] Further, the power assembly 2 described above further comprises a three-way adapter 26, a one-way valve 27 and a connecting pipe 28; the three-way adapter 26 is connected between the hydraulic valve body 23 and the liquid bag 22; the one-way valve 27 is arranged in the hydraulic valve body 23 and sealingly cooperates with the inner wall of the hydraulic valve body 23; the two ends of the connecting pipe 28 are respectively connected with the three-way adapter 26 and the hydraulic valve body 23 and are communicated to the two sides of the one-way valve 27; the cross-sectional area of the connecting pipe 28 is smaller than that of the hydraulic valve body 23, that is, the flow rate of the connecting pipe 28 is smaller than that of the hydraulic valve body 23. Due to the arrangement of the one-way valve 27, the water output from the liquid bag 22 can only flow back to the liquid bag 22 from the direction of the connecting pipe 28 after passing through the one-way valve 27, thereby limiting the reset speed of the piston rod 21, that is, limiting the reset speed of the first sliding piece 3. Therefore, the inner diameter of the connecting pipe 28 determines the backflow rate of the power assembly 2, that is, controls the reset time of the first sliding piece 3, so that the time length of the delay flush can be controlled and adjusted by replacing the connecting pipe 28 with different inner diameters, and the replacement of the connecting pipe 28 is very convenient.

[0058] In the first embodiment, the movable assembly 5 comprises a second sliding piece 51 slidingly fitted in the shell 1, and a swing block 52 pivotally fitted with the second sliding piece 51; the second sliding piece 51 is provided with an output rod 511 outputting power; the second clamping portion 521 is arranged on the opposite side of the swing block 52 relative to the first sliding piece 3; and the two ends of the second elastic piece 6 abut against the inner wall of the shell 1 and the swing block 52 respectively. Wherein, the shell 1 (i.e. the second sliding groove 122) is provided with a second positioning column 124, the swing block 52 is provided with a second mounting cavity 522, and the two ends of the second elastic piece 6 are fitted with the second positioning column 124 and the second mounting cavity 522 respectively, so as to realize the positioning fitting of the two ends of the second elastic piece 6 and ensure the position stability of the second elastic piece 6.

[0059] Further, the mechanical linkage device is further provided with a pressing block 7 and a third spring 8; the pressing block 7 is slidingly fitted in the shell 1 and opposite to the end of the swing block 52 away from the second sliding piece 51, and the pressing block 7 is located on the two sides of the swing block 52 respectively relative to the first sliding piece 3; and the third spring 8 is arranged between the inner wall of the shell 1 and the pressing block 7 so that the pressing block 7 abuts against the end side of the swing block 52. Thus, under the joint action of the pressing block 7 and the third spring 8, the swing block 52 is pushed towards the direction of the first sliding piece 3, so as to ensure that the first clamping portion 31 can be fitted with the second clamping portion 521. Wherein, the shell 1 is provided with a third sliding groove 125 for assembling the pressing block 7 and the third spring 8, so as to limit the sliding position and direction of the pressing block 7 and not to interfere with the movement path of the swing block 52, and the pressing block 7 is provided with a pressing rod 71 penetrating out of the third sliding groove 125 and abutting against the side of the swing block 52.

[0060] Secondly, the side of the end of the swing block 52 away from the second sliding piece 51 and opposite to the first sliding piece 3 is provided with a first inclined surface 523, and the inner wall of the shell 1 (i.e. the inner wall of the second sliding groove 122) is provided with a guide slope 126 opposite to the first inclined surface 523. Thus, the guide slope 126 and the pressing block 7 act on the two sides of the end of the swing block 52 respectively: when the second sliding piece 51 and the swing block 52 are driven by the first sliding piece 3 to compress the second elastic piece 6, the first inclined surface 523 contacts the guide slope 126 to drive the swing block 52 to swing, so as to make the second clamping portion 521 disengage from the first clamping portion 31, the first sliding piece 3 and the swing block 52 are no longer linked, and the first sliding piece 3 continues to reset by itself under the action of the first elastic piece 4; then, under the action of the third spring 8, the pressing block 7 presses the swing block 52 towards the guide slope 126, the swing block 52 and the second sliding piece 51 reset under the action of the second elastic piece 6, and finally the mechanical flushing mechanism of the closestool is closed.

[0061] The activity assembly 5 is in transmission connection with the mechanical flushing mechanism of the closestool, so that the activity assembly 5 can output power to open the mechanical flushing mechanism of the closestool when the activity assembly 5 is pushed by the first sliding piece 3. Specifically, in the first embodiment, when the application is installed in a smart closestool, for example, a pressure type flushing system of the smart closestool, the mechanical flushing mechanism is a pilot valve b, and the output rod 511 of the activity assembly 5 acts on the sealing diaphragm c of the pilot valve b to change the state of the sealing diaphragm c: when the output rod 511 is retracted, the sealing diaphragm c is in an open state, and then the pressure type flushing system starts to drain; when the output rod 511 is extended, the sealing diaphragm c is in a closed state, and then the pressure type flushing system no longer drains. Generally, the input end of the pilot valve b is connected to the pressure relief device (such as an opening valve) of the pressure type flushing system, and the water in the pressure relief device is first discharged from the pilot valve b after the pilot valve b is opened, so that the pressure relief device is opened, and the pressure relief device is opened, and the pressure package also starts to drain.

[0062] Reference Figures 3 to 6 The working principle is as follows in combination with the structural design of the first embodiment: (1) When the user sits down, the liquid bag 22 is flattened, and the water in it is squeezed out, so that the hydraulic pressure in the hydraulic valve body 23 increases, the pressure acts on the diaphragm 25, and the piston rod 21 is pushed out; because the pressure of the power assembly 2 is greater than the elastic force of the first elastic member 4, the first sliding piece 3 is pushed and the first elastic member 4 is compressed, so that the first elastic member 4 stores energy; at this time, the first clamping part 31 and the second clamping part 521 are in opposite inclined surfaces, and the first clamping part 31 can pass through the second clamping part 521 without driving the swing block 52; during the whole process, the hydraulic pressure output by the power assembly 2 is converted into the elastic potential energy of the first elastic member 4.

[0063] (2) When the user gets up, the elastic potential energy of the first elastic member 4 is released, and starts to push the first sliding piece 3 to reset; before the first clamping part 31 contacts the second clamping part 521, the activity assembly 5 composed of the second sliding piece 51 and the swing block 52 does not act, and the pressure type flushing system has not been opened, so the time is the delay time that the first embodiment can realize.

[0064] (3) After the first clamping part 31 contacts the second clamping part 521, because the planes of the two are opposite, the first clamping part 31 hooks the second clamping part 521 to drive the second sliding piece 51 and the swing block 52 to move and compress the second elastic member 6 at the same time, and the output rod 511 of the second sliding piece 51 no longer applies pressure to the sealing diaphragm c, the pilot valve b is opened, the water in it is discharged, and then the opening valve of the pressure type flushing system is opened, and finally the drainage is started.

[0065] (4) After the swing block 52 moves a certain distance, the first inclined surface 523 of the swing block 52 is in contact with the guide slope 126, so that the swing block 52 is forced to swing relative to the second sliding part 51, and then the second clamping part 521 is separated from the first clamping part 31, and then the first sliding part 3 is continuously reset, and at this time, the elastic potential energy of the second elastic part 6 is released to push the swing block 52 and the second sliding part 51 to reset, the output rod 511 is again pressed against the sealing diaphragm c and exerts pressure on the sealing diaphragm c, the pilot valve b is closed, and the entire automatic flushing process is completed.

[0066] Reference Figure 7 As shown in FIG. 2, a second embodiment of the present application is shown.

[0067] Most of the structural designs in the second embodiment are the same as those in the first embodiment, and the difference between the two is that the second embodiment shows the case where the present application is installed in a common toilet.

[0068] Specifically, when the device of the present application is used to modify a common toilet, the output end of the movable assembly 5 (i.e. the output rod 511 of the second sliding part 51) can directly act on the button of the water tank or the drain valve, and when the movable assembly 5 is driven by the energy storage of the first elastic part 4, automatic flushing can be achieved by pressing the button or directly opening the drain valve. Referring to Figure 7 Taking the action on the drain valve as an example, the above-mentioned mechanical flushing mechanism can include a pull rope d and a drain valve e, and the two ends of the pull rope d are connected to the movable assembly 5 and the stopper f of the drain valve e respectively. Figure 7 With the direction in FIG. 1 as the reference, when the movable assembly 5 is forced to move to the left, the movable assembly 5 will pull the pull rope d to the left, and then open the stopper f through the pull rope d, and the drain valve e starts to drain; when the movable assembly 5 is reset, the drain valve e is reset under the action of gravity, and the pull rope d is straightened again.

[0069] Reference Figures 8 to 13 As shown in FIG. 3, a third embodiment of the present application is shown.

[0070] In the third embodiment, the mechanical flushing mechanism driven and connected by the above-mentioned movable assembly 5 is still the pilot valve b, that is, the application scene is the same as that of the first embodiment, and the output rod 511 of the movable assembly 5 acts on the sealing diaphragm c of the pilot valve b to change the state of the sealing diaphragm c, and the specific working mode and principle are not described here. The main difference between the third embodiment and the first embodiment is the detailed structure of the power assembly 2 and the cooperation mode of the first clamping part 31 and the second clamping part 521.

[0071] In the third embodiment, the power assembly 2 is a pneumatic power mechanism, which comprises a button seat 29, an exhaust nozzle 210, a button 220, and a pneumatic valve body 230; the button seat 29 is arranged on the bottom surface of the toilet seat a, and a pneumatic cavity 291 is arranged in the button seat 29; the exhaust nozzle 210 is arranged on the button seat 29, the button 220 is movably sealed in the pneumatic cavity 291, and the button 220 blocks the exhaust nozzle 210 when being pressed; the pneumatic valve body 230 is installed in the housing 1, and is in communication with the pneumatic cavity 291 and the exhaust nozzle 210 through the air pipes 240 and 240', respectively, and the end of the first sliding member 3 movably penetrates the pneumatic valve body 230. Through the above structure, when the user sits down, the process of pressing the button 220 will squeeze the air in the pneumatic cavity 291, so that the pressure in the pneumatic valve body 230 increases; at the same time, the button 220 also blocks the exhaust nozzle 210, the pneumatic valve body 230 cannot exhaust, and the increasing air pressure will push the first sliding member 3 to move, thereby realizing the subsequent action; when the user gets up, the exhaust nozzle 210 is opened, the pneumatic valve body 230 starts to exhaust, the first sliding member 3 is reset under the action of the first elastic member 4, and the pneumatic cavity 291 starts to replenish air. Therefore, the user will naturally apply pressure to the button 220 after sitting down during the process of using the toilet, thereby starting the mechanical linkage device, without the need for active operation, and can give the user an "automated" experience.

[0072] Further, the button seat 29 comprises a seat body 292 and a cover body 293, the cover body 293 is detachably connected with the seat body 292 to form the pneumatic cavity 291; the exhaust nozzle 210 is arranged between the seat body 292 and the cover body 293; the button 220 movably penetrates the cover body 293 and movably seals with the inner wall of the seat body 292; specifically, the seat body 292 is provided with a movable seat 250 movably sealed with the inner wall of the pneumatic cavity 291, the button 220 movably penetrates the cover body 293 and is detachably connected with the movable seat 250; the inner side of the movable seat 250 is provided with a rubber cup 260 movably sealed with the inner wall of the pneumatic cavity 291, the rubber cup 260 has the same working principle as the rubber cup in the air pump, and the periphery of the rubber cup 260 is movably sealed with the inner wall of the pneumatic cavity 291 when being compressed, and the gas can enter the pneumatic cavity 291 through the gap between the rubber cup 260 and the inner wall of the pneumatic cavity 291 when being released, thereby realizing air replenishment; the fourth spring 270 is arranged between the rubber cup 260 and the seat body 292, and the button 220 / movable seat 250 / rubber cup 260 can be reset by the elastic force of the fourth spring 270 when the user gets up.

[0073] Meanwhile, the circumferential surface of the first sliding member 3 is sleeved with a plurality of sealing rings 9 for realizing dynamic sealing between the end of the first sliding member 3 and the inner wall of the air pressure valve body 230; the power assembly 2 further comprises a one-way valve 27 and a connecting head 280; the one-way valve 27 is arranged in the air pressure valve body 230 and sealingly cooperates with the inner wall of the air pressure valve body 230, and the connecting head 280 is arranged in the shell 1 and detachably connected with the air pressure valve body 230 so as to dismount the one-way valve 27; the air cavity 291 and the air outlet nozzle 210 are respectively located at two ends of the one-way valve 27. Thus, by arranging the one-way valve 27, the gas can be prevented from flowing back to the air cavity 291 and can only be discharged through the air outlet nozzle 210. Therefore, the aperture of the air outlet nozzle 210 when not under pressure determines the discharging speed, that is, controls the resetting speed / time of the first sliding member 3, so that the delay time of the delay flushing can be controlled and adjusted by replacing the air outlet nozzle 210 with different apertures, and the user only needs to dismount the cover body 293 to replace the air outlet nozzle 210, which is very convenient to operate.

[0074] Secondly, the button seat 29 is provided with a sealing gasket 290 opposite to the air outlet nozzle 210.

[0075] In addition, in the third embodiment, the power assembly 2 is arranged on the left and right sides of the toilet seat a respectively, the air cavities 291 of the two groups of power assemblies 2 are communicated to the same three-way joint and then communicated to the connecting head 280; and the air outlet end of the air pressure valve body 230 is only communicated to one air outlet nozzle 210, that is, the number of the air outlet nozzles 210 only needs to be one.

[0076] In the third embodiment, the movable assembly 5 comprises a second sliding member 51 slidingly fitted in the shell 1, a swing block 52 pivotally connected with the second sliding member 51, a clamping hook 53 and an elastic piece 54; the second sliding member 51 is provided with an output rod 511 for outputting power; the clamping hook 53 is movably fitted on the opposite side of the swing block 52 and the first sliding member 3 and is provided with a second clamping portion 531 clampingly connected with the first clamping portion 31; the elastic piece 54 is arranged in the swing block 52 and provides elastic force to reset the clamping hook 53 to the direction of the first clamping portion 31; the two ends of the second elastic member 6 respectively abut against the inner wall of the shell 1 and the swing block 52. Among them, the shell 1 (i.e. the second sliding groove 122) is provided with a second positioning column 124, the swing block 52 is provided with a second mounting cavity 522, and the two ends of the second elastic member 6 are respectively connected with the second positioning column 124 and the second mounting cavity 522 to realize the positioning cooperation of the two ends of the second elastic member 6 and ensure the position stability of the second elastic member 6. Among them, one end of the elastic piece 54 is fixedly connected with the inner wall of the swing block 52, and the clamping hook 53 is fixedly connected with the other end of the elastic piece 54.

[0077] Further, the swing block 52 is provided with a second inclined surface 524 on the side away from the second sliding member 51 and opposite to the first sliding member 3, and the inner wall of the shell 1 (i.e. the inner wall of the second sliding groove 122) is provided with a first protrusion 127 opposite to the second inclined surface 524, which allows the swing block 52 to swing away from the first sliding member 3 after abutting the second inclined surface 524. Referring to Figure 12 , 13 During the resetting of the first sliding member 3, this structure can limit when the first clamping part 31 is disengaged from the second clamping part 531, i.e. only when the first protrusion 127 gradually embeds into the recess structure formed by the second inclined surface 524 to make the corresponding end of the swing block 52 swing, the second clamping part 531 can be disengaged from the first clamping part 31.

[0078] Secondly, the swing block 52 is provided with a third inclined surface 525 on the side away from the second sliding member 51 and facing the first sliding member 3, and the inner wall of the shell 1 (i.e. the inner wall of the second sliding groove 122) is provided with a second protrusion 128 opposite to the third inclined surface 525, which drives the swing block 52 to swing away from the first sliding member 3 after abutting the third inclined surface 525. This structure can ensure that the second clamping part 531 can be disengaged from the first clamping part 31, and ensure the stability of the function; and during the process of the first sliding member 3 being pushed by the power assembly 2, the second clamping part 531 can avoid the first clamping part 31. The second inclined surface 524 and the third inclined surface 525 can be arranged in parallel, so that the corresponding end of the swing block 52 forms a corresponding shape of the turning part.

[0079] Referring to Figures 14 to 18 , a fourth embodiment of the present application is shown.

[0080] In the fourth embodiment, the movable assembly 5 adopts the same structure design as the third embodiment, and the mechanical flushing mechanism driven and connected by the movable assembly 5 is also a pilot valve b, i.e. the application scene is the same as that of the first and third embodiments. The output rod 511 of the movable assembly 5 acts on the sealing diaphragm c of the pilot valve b to change the state of the sealing diaphragm c, and the specific working mode and principle are not described here.

[0081] In the fourth embodiment, the power assembly 2 described above is a hydraulic power mechanism, which comprises a piston rod 21, a liquid bag 22, a hydraulic valve body 23, a piston seat 24 and a diaphragm 25; the piston rod 21 is arranged opposite to the end of the first sliding piece 3; the liquid bag 22 can be arranged at a position required by the user, preferably the bottom surface of the toilet seat a, so that the user can naturally apply pressure to the liquid bag 22 after sitting down during the process of using the toilet, thereby starting the mechanical linkage without active operation, and being able to give the user a "automated" experience; the hydraulic valve body 23 is installed in the shell 1, and the two ends thereof are respectively communicated with the liquid bag 22 and the piston seat 24; the diaphragm 25 is arranged at the communication position of the piston seat 24 and the hydraulic valve body 23; and the piston rod 21 is movably arranged in the piston seat 24 and abuts against the diaphragm 25. Thus, when the user sits down, the liquid bag 22 is pressed, the water in the liquid bag 22 is squeezed out, the pressure in the hydraulic valve body 23 is increased, the pressure acts on the diaphragm 25, and the piston rod 21 is pushed out through the diaphragm 25; and when the user stands up, the liquid bag 22 is no longer pressed, the pushing force acting on the piston rod 21 is reduced, and the piston rod 21 is pushed back to the original position under the action of the first elastic piece 4.

[0082] Further, the power assembly 2 described above further comprises a one-way valve 27, a communication seat 2100, a communication pipe 2200 and a sealing cover 2300; the communication seat 2100 is arranged in the hydraulic valve body 23 and is provided with two passages, both of which are respectively communicated with the input end and the output end of the hydraulic valve body 23; the one-way valve 27 and the communication pipe 2200 are respectively sealingly installed in the two passages; and the sealing cover 2300 sealingly covers the opening of the hydraulic valve body 23. The open-cover type hydraulic valve body 23 facilitates the dismounting and replacement of the internal components such as the one-way valve 27, the communication seat 2100 and the communication pipe 2200. In addition, since the communication pipe 2200 is arranged inside the hydraulic valve body 23, the cross-sectional area thereof is necessarily smaller than that of the hydraulic valve body 23, i.e. the flow rate of the communication pipe 2200 is smaller than that of the hydraulic valve body 23. Since the one-way valve 27 is arranged, the water output from the liquid bag 22 can only flow back to the liquid bag 22 from the direction of the communication pipe 2200 after passing through the one-way valve 27, thereby limiting the resetting speed of the piston rod 21, i.e. limiting the resetting speed of the first sliding piece 3. Therefore, the inner diameter of the communication pipe 2200 determines the backflow rate of the power assembly 2, i.e. controls the resetting time length of the first sliding piece 3, so that the time length of the delayed flushing can be controlled and adjusted by replacing the communication pipe 2200 with different inner diameters, and the replacement of the connection pipe 28 is also very convenient. Moreover, the communication pipe 2200 is arranged inside the hydraulic valve body 23 and is communicated with the chamber on the output side of the one-way valve 27 and the chamber formed between the communication seat 2100 and the sealing cover 2300, and there is no risk of water leakage, so the user experience is better. The one passage of the communication seat 2100 is provided with a sealing plug 2400, and the communication pipe 2200 is embedded in the sealing plug 2400, so that the tight fit of the sealing plug 2400 ensures the installation stability and sealing performance.

[0083] ReferenceFigure 19 As shown in FIG. 7, a seventh embodiment of the present application is shown.

[0084] Most of the structural designs in the seventh embodiment are the same as those in the third embodiment, and the difference between the two is that the seventh embodiment shows the case where the mechanical flushing mechanism driven by the movable assembly 5 is the drain valve e, i.e., the same application scenario as the second embodiment, and the output rod 511 of the movable assembly 5 acts on the pull rope d to drive the stopper f of the drain valve e, and the specific working mode and principle thereof will not be described here.

[0085] Reference Figure 20 As shown in FIG. 7, a seventh embodiment of the present application is shown.

[0086] Most of the structural designs in the seventh embodiment are the same as those in the third embodiment, and the difference between the two is that the seventh embodiment shows the case where the mechanical flushing mechanism driven by the movable assembly 5 is the drain valve e, i.e., the same application scenario as the second embodiment, and the output rod 511 of the movable assembly 5 acts on the pull rope d to drive the stopper f of the drain valve e, and the specific working mode and principle thereof will not be described here.

[0087] In summary, the power assembly 2, the movable assembly 5 and the mechanical flushing mechanism in the present application have no structural and functional interference with each other, so that different technical means of the power assembly 2, the movable assembly 5 and the mechanical flushing mechanism can be selected for arrangement and combination to obtain rich technical solutions.

[0088] The above six embodiments can all realize the function of delayed flushing of the toilet product; according to the foregoing, the present application can adjust the position of the first clamping part 31 and the second clamping part 521 on the corresponding parts and the coefficient of each spring to realize the adjustment of the delay time, which is zero delay at the shortest and can reach more than 10s at the longest. The following two embodiments show the case of zero delay: Reference Figure 21 、 Figure 22 As shown in FIG. 7, a seventh embodiment of the present application is shown.

[0089] The structure of the seventh embodiment is a simplified version of the fourth embodiment, and the one-way valve 27, the communication seat 2100, the communication pipe 2200, the sealing cover 2300, the sealing plug 2400, and other configurations are no longer provided. The liquid bag 22 directly communicates with the hydraulic valve body 23, and the water flow directly enters and exits through the pipe, so that the rate of water discharge when the liquid bag 22 is under pressure (when the user sits down) is consistent with the rate of water return when the liquid bag 22 recovers (when the user gets off). In addition, regarding the first clamping part 31 and the second clamping part 531, the positional relationship between the two is designed as follows: when the user sits down, the maximum water pressure output by the power assembly 2 just makes the first clamping part 31 pass over the second clamping part 531, and the plane of the first clamping part 31 is attached to the plane of the second clamping part 531. Thus, when the user gets off, the first clamping part 31 can immediately drive the second clamping part 531 to move to the left, thereby realizing the effect of “zero delay” automatic drainage flushing.

[0090] Reference Figure 23 , Figure 24 As shown in FIG. 8, the eighth embodiment of the present application is shown.

[0091] The structure of the eighth embodiment is a simplified version of the third embodiment, and only one air pipe 240 is provided between the air cavity 291 of the button seat 29 and the air pressure valve body 230, and the air outlet 210 and its related configurations are no longer provided, so that the rate of air discharge from the air cavity 291 when the button seat 29 is under pressure (when the user sits down) is consistent with the rate of air return when the button seat 29 resets (when the user gets off). In addition, regarding the first clamping part 31 and the second clamping part 531, the positional relationship between the two is designed as follows: when the user sits down, the maximum air pressure output by the power assembly 2 just makes the first clamping part 31 pass over the second clamping part 531, and the plane of the first clamping part 31 is attached to the plane of the second clamping part 531. Thus, when the user gets off, the first clamping part 31 can immediately drive the second clamping part 531 to move to the left, thereby realizing the effect of “zero delay” automatic drainage flushing.

[0092] In the above embodiments, the first elastic member 4 and the second elastic member 6 are preferably springs, and the first sliding member 3 and the second sliding member 51 are preferably block-shaped members (i.e., “sliding blocks”) that can slide linearly at the positioning position. The liquid bag 22 is preferably a water bag, which is easy to obtain using water as the medium. The first clamping part 31 and the second clamping part 521 / 531 are respectively hook-shaped parts (i.e., “claws”) provided at corresponding positions, which can be hooked or unhooked due to elasticity.

[0093] The above embodiments and drawings do not limit the product form and style of the present application, and any appropriate changes or modifications made by any ordinary skilled person in the art shall be considered as not departing from the patent scope of the present application.

Claims

1. A mechanical linkage device for automatic flushing of a toilet, comprising: a housing, a power assembly, a first sliding member, a first elastic member, a movable assembly, and a second elastic member; the power assembly outputs power under external pressure change or restores standby state; the first sliding member is slidingly fitted in the housing, and two ends thereof are respectively fitted with the output end of the power assembly and the first elastic member; the movable assembly is slidingly fitted in the housing with the first sliding member, and opposite sides of the first sliding member and the movable assembly are provided with a first clamping portion and a second clamping portion that can be clamped or separated with each other; the second elastic member is arranged in the housing and acts on the movable assembly; the movable assembly is in transmission connection with a mechanical flushing mechanism of the toilet; when the power assembly outputs power, the first sliding member is pushed to move and compress the first elastic member, so that the first elastic member stores energy; when the power assembly restores standby state, the first elastic member releases the stored energy and drives the first sliding member to reset, and then the first clamping portion clamps the second clamping portion to drive the movable assembly to slide so that the mechanical flushing mechanism of the toilet is opened, and at the same time, the movable assembly compresses the second elastic member to store energy in the second elastic member; when the second clamping portion is separated from the first clamping portion, the stored energy of the second elastic member is released to push the movable assembly to reset.

2. The mechanical linkage device for automatic flushing of a toilet according to claim 1, wherein: the power assembly comprises a piston rod, a liquid capsule, a hydraulic valve body, a piston seat, and a diaphragm; the piston rod is arranged opposite to the end of the first sliding member; the liquid capsule is arranged on the bottom surface of a toilet seat; the hydraulic valve body is installed in the housing, and two ends thereof are respectively communicated with the liquid capsule and the piston seat; the diaphragm is arranged at the communication position of the piston seat and the hydraulic valve body; and the piston rod is movably arranged in the piston seat and abuts against the diaphragm.

3. The mechanical linkage device for automatic flushing of a toilet according to claim 2, wherein: the power assembly further comprises a three-way adapter, a one-way valve, and a connecting pipe; the three-way adapter is connected between the hydraulic valve body and the liquid capsule; the one-way valve is arranged in the hydraulic valve body and sealingly fitted with the inner wall of the hydraulic valve body; and two ends of the connecting pipe are respectively connected with the three-way adapter and the hydraulic valve body and communicated to two sides of the one-way valve; and the cross-sectional area of the connecting pipe is smaller than that of the hydraulic valve body.

4. The mechanical linkage device for automatic flushing of a toilet according to claim 2, wherein: the power assembly further comprises a one-way valve, a communication seat, a communication pipe, and a sealing cover; the communication seat is arranged in the hydraulic valve body and provided with two passages, both of which are respectively communicated with the input end and the output end of the hydraulic valve body; the one-way valve and the communication pipe are respectively sealingly installed in the two passages; and the sealing cover sealingly covers the opening of the hydraulic valve body.

5. The mechanical linkage device for automatic flushing of a toilet according to claim 1, wherein: ​ ​ ​ ​ ​ ​ ​ ​ The power assembly comprises a button seat, an exhaust nozzle, a button and a gas pressure valve body; the button seat is arranged on the bottom surface of the toilet seat and is provided with a gas cavity; the exhaust nozzle is arranged on the button seat; the button is movably arranged in the gas cavity and blocks the exhaust nozzle when pressed; the gas pressure valve body is arranged in the shell and is communicated with the gas cavity and the exhaust nozzle through gas pipes; and the end of the first sliding member movably penetrates the gas pressure valve body.

6. The mechanical linkage device for automatic flushing of a toilet according to claim 5, characterized in that: The seat body is provided with a movable seat which movably cooperates with the inner wall of the gas cavity; the button movably penetrates the cover body and is detachably connected with the movable seat; the inner side of the movable seat is provided with a leather cup which movably cooperates with the inner wall of the gas cavity; and the fourth spring is arranged between the leather cup and the seat body. The periphery of the first sliding member is provided with a plurality of sealing rings for realizing the dynamic sealing between the end of the first sliding member and the inner wall of the gas pressure valve body; the power assembly further comprises a one-way valve and a connecting head; the one-way valve is arranged in the gas pressure valve body and movably cooperates with the inner wall of the gas pressure valve body; the connecting head is arranged in the shell and is detachably connected with the gas pressure valve body; the communication positions of the gas cavity, the exhaust nozzle and the gas pressure valve body are respectively located at the two ends of the one-way valve; and the button seat is provided with a sealing gasket opposite to the exhaust nozzle.

7. The mechanical linkage device for automatic flushing of a toilet according to claim 1, characterized in that: The movable assembly comprises a second sliding member which movably cooperates with the shell and a swing block which is pivotally connected with the second sliding member; the second sliding member is provided with an output rod for outputting power; the second clamping part is arranged on the opposite side of the swing block and the first sliding member; and the two ends of the second elastic member respectively abut against the inner wall of the shell and the swing block.

8. The mechanical linkage device for automatic flushing of a toilet according to claim 7, characterized in that: A pressing block and a third spring are further arranged; the pressing block movably cooperates with the shell and is opposite to the end of the swing block away from the second sliding member; the pressing block and the first sliding member are respectively located on the two sides of the swing block; and the third spring is arranged between the inner wall of the shell and the pressing block so that the pressing block abuts against the end side of the swing block.

9. The mechanical linkage device for automatic flushing of a toilet according to claim 8, characterized in that: The side of the end of the swing block away from the second sliding member and opposite to the first sliding member is provided with a first inclined surface; the inner wall of the shell is provided with a guide slope opposite to the first inclined surface; when the second sliding member and the swing block are driven by the first sliding member to compress the second elastic member, the first inclined surface contacts the guide slope to drive the swing block to swing, so that the second clamping part is separated from the first clamping part.

10. The mechanical linkage device for automatic flushing of a toilet according to claim 1, characterized in that: The movable assembly comprises a second slider slidingly fitted in the shell, a swing block pivotally connected with the second slider, a hook member and a spring piece; the second slider is provided with an output rod for outputting power; the hook member is movably fitted on the opposite side of the swing block and the first slider and is provided with a second clamping part for clamping with the first clamping part; the spring piece is arranged in the swing block and provides elastic force for resetting the hook member to the direction of the first clamping part; the two ends of the second spring piece abut against the inner wall of the shell and the swing block respectively.

11. The mechanical linkage for automatic flushing of a toilet according to claim 10, characterized in that: The side of the swing block away from the second slider and opposite to the first slider is provided with a second inclined surface, and the inner wall of the shell is provided with a first convex point opposite to the second inclined surface, the first convex point abutting against the second inclined surface allows the swing block to swing away from the first slider; the side of the swing block away from the second slider and facing the first slider is provided with a third inclined surface, and the inner wall of the shell is provided with a second convex point opposite to the third inclined surface, the second convex point abutting against the third inclined surface drives the swing block to swing away from the first slider.

12. The mechanical linkage for automatic flushing of a toilet according to claim 1, characterized in that: The mechanical flushing mechanism is a pilot valve, and the output rod of the movable assembly acts on the sealing diaphragm of the pilot valve to change the state of the sealing diaphragm: when the output rod is retracted, the sealing diaphragm is in an open state; when the output rod is extended, the sealing diaphragm is in a closed state.

13. The mechanical linkage for automatic flushing of a toilet according to claim 1, characterized in that: The mechanical flushing mechanism comprises a pull rope and a drain valve, and the two ends of the pull rope are connected with the movable assembly and the stopper of the drain valve respectively.

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