Power-assisted flushing device and closestool

Abstract

The invention provides a power-assisted flushing device. The flushing device is installed at the rear end of a toilet trap pipeline. The flushing device comprises a piston assembly, a driving assembly and a plugging piece. The rear end of the trap pipeline is communicated with a blow-off pipe, and the piston assembly is connected with the plugging piece and used for driving the plugging piece to plug or open communication between the trap pipeline and the blow-off pipe; the driving assembly is connected with an intelligent system of the closestool and drives the piston assembly to do piston motion; when the toilet seat is flushed, the plugging piece is plugged, and the blow-off pipe is in a closed state; when the closestool is mainly flushed, the plugging piece is opened, and the blow-off pipe is in an open state; the piston assembly comprises a piston head, a piston ring, a piston rod and a piston fixing cover. The piston ring slides between the piston and the piston fixing cover; ribs are arranged on the end face, facing the piston ring, of the piston fixing cover; the piston extends out, and the piston ring retracts backwards to be matched with ribs on the piston fixing cover to form an exhaust channel; when the piston retracts, the piston ring moves forwards to form sealing fit with the piston.

Description

Technical Field

[0001] The present invention relates to the technical field of intelligent toilets, and in particular to a power-assisted flushing device and a toilet. Background Art

[0002] Siphon toilets are a common type of toilet that uses the siphon phenomenon to remove wastewater and sewage. When flushing, the siphon toilet will first fill the pipe with water to form a water seal. When the water level reaches a certain height, the water flow will form a siphon effect, that is, under the action of atmospheric pressure, water and waste are quickly sucked away.

[0003] Siphonic toilets are the most widely used toilets because they have their own water seal and excellent anti-odor effect. However, due to the curved pipe structure, siphonic toilets require more water when flushing. The curved pipe structure may cause slow drainage and easy clogging. Therefore, existing siphonic toilets are affected by factors such as the flushing water volume and the inner diameter of the water trap, and often get stuck and have poor discharge effects during the discharge process. Summary of the invention

[0004] In response to the problems of sticking and poor discharge effect during the discharge process of siphonic toilets, the present invention provides a power-assisted flushing device and a toilet, which can generate negative pressure at the rear end of the trap, thereby improving the flushing effect of the toilet, reducing water consumption and reducing noise.

[0005] In order to solve the above technical problems, the present invention provides a power-assisted flushing device, which is installed at the rear end of a toilet trap pipe; the flushing device comprises a piston assembly, a driving assembly and a blocking member; the rear end of the trap pipe is connected to a sewage pipe, and the piston assembly is connected to the blocking member to drive the blocking member to block or open the connection between the trap and the sewage pipe;

[0006] The driving component is connected to the intelligent system of the toilet, and the driving component drives the piston component to perform piston movement; when the toilet ring is flushed, the blocking member is blocked, and the sewage pipe is in a closed state; when the toilet is flushed, the blocking member is opened, and the sewage pipe is in an open state;

[0007] The piston assembly comprises a piston head, a piston ring, a piston rod and a piston fixing cover; the piston head is fixed on the piston fixing cover; the piston ring is capable of sliding between the piston and the piston fixing cover; the end surface of the piston fixing cover facing the piston ring is provided with ribs;

[0008] When the piston is extended, the piston ring retracts and cooperates with the ribs on the piston fixing cover to form an exhaust passage between the piston, the piston ring and the piston fixing cover; when the piston is retracted, the piston ring moves forward and forms a sealing cooperation with the piston.

[0009] In a preferred embodiment, the rear end of the trap pipe is connected to a connecting pipe, the inner tube of the connecting pipe is a piston cylinder, the side wall of the piston cylinder is provided with an opening, and the opening is connected to a sewage pipe;

[0010] A piston guide rail bracket is fixedly provided at the rear end of the connecting pipe, the piston fixing cover is placed in the piston cylinder, and the piston head serves as a blocking member;

[0011] The piston rod is slidably mounted on the piston guide bracket, and the driving assembly drives the piston rod to cause the piston head to extend or retract in the piston cylinder, and the corresponding piston head blocks or opens the opening.

[0012] In a preferred embodiment, the piston guide rail bracket is provided with a guide rail groove and a spring guide column, and the end of the piston rod away from the piston head is provided with a slider;

[0013] The slider is slidably connected with the guide rail groove, and the spring guide column is provided with an elastic member and the slider; the two ends of the elastic member are respectively against the end surfaces of the slider and the piston guide rail bracket;

[0014] The driving assembly is used to drive the slider to slide along the guide groove to provide a driving force for the piston head to extend; the slider squeezes the elastic member to store energy; after energy storage, the elastic member provides a driving force for the piston to retract.

[0015] In a preferred embodiment, the driving assembly includes a piston motor, a piston transmission assembly and a locking device, wherein the piston motor drives the slider to move through the piston transmission assembly; the locking device is used to lock or release the movement of the slider;

[0016] When the slider is locked, the piston extends and the elastic member stores energy; when the slider is released, the elastic member releases the stored energy and the piston retracts.

[0017] In a preferred embodiment, the piston transmission assembly includes a gear, a rack, a limit plate and a rack guide bracket; the output end of the piston motor is connected to the gear; the gear is meshed with the rack;

[0018] The rack guide rail bracket is installed above the piston guide rail bracket, the rack guide rail bracket includes a rack guide rail groove, the rack is slidably connected in the rack guide rail groove, and the slider is connected to the rack.

[0019] In a preferred embodiment, the locking device is arranged at the rear end of the connecting tube; the locking device comprises a locking motor, a lever, a latch, a locking buckle and a first torsion spring; the locking buckle is rotatably mounted on the piston guide rail bracket through the latch, and the first torsion spring is arranged on the locking buckle; the output end of the locking motor is connected to the lever;

[0020] The lock buckle comprises a buckle and a toggle surface; the slider is provided with an inclined surface; in an initial state, the first torsion spring acts on the lock buckle, the buckle is downwardly placed above the spring guide column, and the toggle rod is located below the toggle surface;

[0021] The slider slides to the inclined surface and pushes the buckle until the buckle passes over the inclined surface. The buckle is buckled at the rear side of the inclined surface under the action of the first torsion spring, and the slider is locked;

[0022] When the slider is released, the lock motor drives the lever to rotate, the lever moves the moving surface, the buckle is lifted away from the inclined surface, and the slider is released.

[0023] In a preferred embodiment, the center lines of the trap pipe, the piston cylinder and the sewage pipe are on the same plane.

[0024] In a preferred embodiment, a piston cylinder is provided on one side of the sewage pipe, and the piston assembly is provided in the piston cylinder; a flap assembly is provided at the connection between the sewage pipe and the trap pipe, and the flap assembly is a blocking member;

[0025] The flapping cover assembly is linked with the piston assembly through a connecting rod. When the piston assembly is in an extended state or a retracted state, the flapping cover assembly is correspondingly in a closed state or an open state.

[0026] In a preferred embodiment, the flapping cover assembly includes a flapping cover, a flapping cover gasket, a second torsion spring and a lifting rod; the lifting rod is fixedly connected to the flapping cover;

[0027] The connecting rod is provided with a connecting groove, and the lifting rod comprises a connecting column, and the connecting column slides in the connecting groove.

[0028] The present invention also provides a toilet, wherein the power-assisted flushing device is installed at the rear end of the water trap pipe of the toilet.

[0029] Compared with the prior art, the technical solution of the present invention has the following beneficial effects:

[0030] 1. By setting up a power-assisted flushing device, the rear end of the water trap is blocked, and a drive is set so that the rear end of the water trap can be blocked or opened. When flushing, the piston assembly is used to seal the rear end of the water trap. At this time, the water of the flushing will raise the water level in the toilet, which is conducive to the formation of siphon. The piston assembly is quickly retracted to instantly open the connection of the rear end of the water trap, forming a negative pressure in the water trap, thereby accelerating the formation of siphon.

[0031] 2. During circle flushing, the piston assembly is used to block the rear end of the water storage bend, which can raise the water level, strengthen the siphon and avoid water waste. The negative pressure generated by the piston movement accelerates and strengthens the siphon, which can reduce the requirements for the main flushing force, water volume and flushing time, thereby saving water and reducing flushing noise.

[0032] 3. The piston assembly is provided with a movable piston ring, which cooperates with the ribs on the piston fixed cover to form an exhaust channel when the piston is extended, and the exhaust channel is closed when the piston is retracted, so as to avoid air leakage from the exhaust hole when the piston is retracted to pump air, thereby reducing the pumping effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of the piston extension movement of the power-assisted flushing device in the first embodiment of the present invention;

[0034] Figure 2 It is a schematic diagram of the piston retraction movement of the power-assisted flushing device in the first embodiment of the present invention;

[0035] Figure 3 This is an exploded view of the main structure of the power-assisted flushing device in the first embodiment of the present invention;

[0036] Figure 4 This is a schematic diagram of the initial state of the piston assembly in the first embodiment of the present invention;

[0037] Figure 5 It is a schematic diagram of the piston assembly in the extended state in the first embodiment of the present invention;

[0038] Figure 6 It is a schematic diagram of the piston assembly being extended and locked in the first embodiment of the present invention;

[0039] Figure 7 It is a schematic diagram of the piston assembly extending and being released in the first embodiment of the present invention;

[0040] Figure 8 It is a schematic diagram of the piston assembly returning to its original position after being released in the first embodiment of the present invention;

[0041] Fig. 9 It is a schematic diagram of the exhaust passage of the piston assembly and the ribs of the piston fixing cover in the first embodiment of the present invention;

[0042] Fig.10 This is a schematic diagram of the assembled power-assisted flushing device in the first embodiment of the present invention;

[0043] Fig.11 This is a schematic diagram of the installation of the power-assisted flushing device at the water trap bend in the second embodiment of the present invention;

[0044] Fig.12 This is a schematic diagram of the installation position of the power-assisted flushing device in the third embodiment of the present invention;

[0045] Fig.13 This is an exploded view of the main structure of the power-assisted flushing device in the third embodiment of the present invention;

[0046] Fig.14 This is a schematic diagram of closing the flap cover assembly in the third embodiment of the present invention;

[0047] Fig.15 A schematic diagram of opening the flap cover assembly in the third embodiment of the present invention;

[0048] Fig.16 It is a schematic diagram of the piston assembly in the extended state in the third embodiment of the present invention;

[0049] Fig.17 Schematic diagram of the piston assembly in the retracted state in the third embodiment of the present invention.

[0050] Explanation of the reference numerals: 1. piston assembly; 11. piston head; 12. piston ring; 13. piston rod; 131. slider; 132. inclined plane; 14. piston fixing cover; 141. rib; 15. exhaust passage; 2. drive assembly; 21. piston motor; 22. piston transmission assembly; 221. gear; 222. rack; 223. limit plate; 224. rack guide bracket; 225. rack guide groove; 226. limit block; 23. locking device; 231. locking motor; 232. lever; 233. latch; 234. lock ; 2341, buckle; 2342, toggle surface; 235, first torsion spring; 3, water trap pipe; 4, sewage pipe; 5, connecting pipe; 6, piston cylinder; 61, opening; 62, filter screen; 63, exhaust pipe; 7, piston guide bracket; 71, guide groove; 72, spring guide column; 73, elastic member; 8, flap cover assembly; 81, flap cover; 82, flap cover gasket; 83, second torsion spring; 84, lifting rod; 85, connecting column; 9, connecting rod; 91, connecting groove; 10, toilet body; 101, ring flushing outlet; 102, main flushing outlet. DETAILED DESCRIPTION

[0051] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work are within the scope of protection of the present invention.

[0052] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0053] In the description of the present invention, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installed", "provided with", "mounted / connected", "connected", etc. should be understood in a broad sense. For example, "connection" can be a wall-mounted 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 components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0054] First embodiment, reference Figure 1-Figure 10 .

[0055] This embodiment provides a power-assisted flushing device, which is installed at the rear end of the toilet trap pipe 3 and can generate negative pressure at the rear end of the trap pipe, thereby improving the flushing effect of the toilet, reducing water consumption and reducing noise. Figure 1 , a power-assisted flushing device is added at the end of the toilet trap pipe 3, and the power-assisted flushing device at least comprises a piston assembly 1, a piston cylinder 6 and a spring. When the toilet ring is flushed, the piston of the power-assisted flushing device is in an extended state, such as Figure 1 , at this time the spring is in a compressed state. When the toilet is flushed, the piston of the power flushing device quickly retracts under the action of the spring. Figure 2 When the piston of the power-assisted flushing device is in the extended state, the piston blocks the rear end of the water trap. At this time, the water in the toilet rises the water level, which is conducive to the formation of siphon. When the piston of the power-assisted flushing device is quickly retracted, negative pressure is formed in the water trap, which accelerates the formation of siphon.

[0056] like Figure 3 , Figure 4Specifically, the flushing device includes a piston assembly 1 and a driving assembly 2. A connecting pipe 5 is provided at the rear end of the trap pipe 3. The connecting pipe 5 is connected to a sewage pipe 4. The toilet power-assisted flushing device can be configured with toilets of different pit distances by matching sewage pipes 4 of different lengths. The inner tube of the connecting pipe 5 is set as a piston cylinder 6. An opening 61 is set on the side wall of the piston cylinder 6. The opening 61 is connected to the sewage pipe 4. The piston assembly 1 includes a piston head 11, a piston ring 12, a piston rod 13 and a piston fixing cover 14. The piston head 11 is fixed on the piston fixing cover 14. The piston head 11, the piston ring 12, and the piston fixing cover 14 are all placed in the piston cylinder 6. The piston assembly 1 has a piston movement, and the piston movement is a piston telescopic movement. Under the piston movement, the piston head 11 is used to block or open the connection between the opening 61 and the sewage pipe 4.

[0057] The drive assembly 2 is connected to the intelligent system of the toilet, and the drive assembly 2 drives the piston assembly 1 to perform piston movement; when the toilet ring is flushed, the piston head 11 is blocked and the sewage pipe 4 is in a closed state; when the toilet is flushed, the piston head 11 is opened and the sewage pipe 4 is in an open state.

[0058] The piston assembly 1 is provided with a closable exhaust passage 15 between the piston head 11 and the piston fixing cover 14. The piston ring 12 can slide between the piston head 11 and the piston fixing cover 14, and the ribs 141 are provided on the end surface of the piston fixing cover 14 facing the piston ring 12. When the piston is in the initial state ( Figure 4 ) to the extended state ( Figure 5 ) moves, the end surface of the piston ring 12 and the rib 141 ( Fig. 9 ) are connected with each other, and an exhaust passage 15 is formed between the piston, the piston ring 12 and the piston fixing cover 14 on the piston assembly 1 ( Fig. 9 ), the air in the piston cylinder 6 can be discharged from the exhaust passage 15. Figure 5 ) to the initial state ( Figure 4 ) moves, the end face of the piston ring 12 is connected with the piston head 11, the piston ring 12 moves forward to form a sealing fit with the piston, and the exhaust passage 15 is closed.

[0059] A piston guide rail bracket 7 is fixedly arranged at the rear end of the connecting pipe 5, and the piston guide rail bracket 7 is connected to the connecting pipe 5 through a sealing ring. A guide rail groove 71 and a spring guide column 72 are arranged on the piston guide rail bracket 7, and a slider 131 is arranged at the end of the piston rod 13 away from the piston head 11. A sliding edge is arranged at the bottom of the slider 131, and the slider 131 is slidably installed in the guide rail groove 71 using the sliding edge. The slider 131 is provided with a through hole for slidingly fitting on the spring guide column 72, and an elastic member 73 is fitted on the spring guide column 72, and the two ends of the elastic member 73 are respectively against the end surfaces of the slider 131 and the piston guide rail bracket 7. The elastic member 73 can be a spring, a compression spring, a tension spring or a gas spring.

[0060] The driving assembly 2 drives the slider 131 to move forward and backward along the guide groove 71. The slider 131 links the piston rod 13 to extend and retract to realize the piston head 11 extending or retracting in the piston cylinder 6. The corresponding piston head 11 blocks or opens the opening 61. When the slider 131 drives the piston head 11 to extend, the elastic member 73 is in a compressed state. Figure 5 The slider 131 squeezes the elastic member 73 to store energy, and after the energy is stored, the elastic member 73 provides a driving force for the piston to retract.

[0061] The driving assembly 2 includes a piston motor 21, a piston transmission assembly 22 and a locking device 23. The piston motor 21 drives the slider 131 to move through the piston transmission assembly 22; the locking device 23 is used to lock or release the movement of the slider 131; when the slider 131 is locked, the piston extends and the elastic member 73 stores energy; when the slider 131 is released, the elastic member 73 releases the stored energy and the piston retracts. The piston transmission assembly 22 in this embodiment is driven by a gear 221 and a rack 222, and can also use a screw nut, a crank slider or a belt drive.

[0062] In this embodiment, the piston transmission assembly 22 includes a gear 221, a rack 222, a limit plate 223 and a rack guide bracket 224; the output end of the piston motor 21 is connected to the gear 221; the gear 221 is meshed with the rack 222, and the rack guide bracket 224 is installed above the piston guide bracket 7, and the rack guide bracket 224 includes a rack guide groove 225, and the rack 222 is slidably connected in the rack guide groove 225, and the slider 131 is connected to the rack 222.

[0063] The piston motor 21 drives the gear 221 to rotate, driving the rack 222 to slide, and the rack 222 pushes the slider 131 to move and compress the elastic member 73. The fixing structure of the rack 222 and the rack guide bracket 224 is that there is a rack guide groove 225 and a rack 222 limit block 226 on the rack guide bracket 224, the rack 222 limit block 226 is arranged on one side of the rack guide groove 225, and the other side of the rack guide groove 225 is the installation side, the rack 222 is slidably installed in the rack guide groove 225 from the installation side, and then the limit piece 223 is installed on the installation side to fix the rack 222 on the rack guide groove 225.

[0064] The lock device 23 is arranged at the rear end of the connecting pipe 5, and includes a lock motor 231, a lever 232, a latch 233, a lock 234 and a first torsion spring 235. The lock 234 is rotatably mounted on the piston guide rail bracket 7 through the latch 233, and the first torsion spring 235 is arranged on the lock 234; the output end of the lock motor 231 is connected to the lever 232, and the lock motor 231 is mounted on the rack guide rail bracket 224.

[0065] The lock buckle 234 includes a buckle 2341 and a toggle surface 2342. The slider 131 is provided with an inclined surface 132. In the initial state, the first torsion spring 235 acts on the lock buckle 234. The buckle 2341 is placed downwardly above the spring guide column 72, and the toggle rod 232 is located below the toggle surface 2342. When the piston begins to extend, the slider 131 moves from Figure 8 In the initial state, when the piston moves to the extended state, the inclined surface 132 on the slider 131 pushes the buckle 2341 on the lock buckle 234 upward until the buckle 2341 passes over the inclined surface 132. Under the action of the first torsion spring 235, the buckle 2341 on the lock buckle 234 can buckle downward on the rear side of the inclined surface 132, and the slider 131 can be locked at this time. Figure 6 When the slider 131 needs to be released, the lock motor 231 drives the lever 232 to push the lock 234 open, the lock motor 231 drives the lever 232 to rotate, the lever 232 moves the moving surface 2342, the buckle 2341 is lifted away from the inclined surface 132, and the slider 131 is released. Figure 7 , the slider 131 quickly returns to the initial state under the action of the elastic member 73 .

[0066] The flushing process of this embodiment is:

[0067] 1) Before flushing, the piston motor 21 drives the rotation, drives the rack 222 to slide, drives the slider 131 and the piston compression elastic member 73 to the extended state, and after the slider 131 is locked by the locking device 23, the piston motor 21 drives the piston transmission assembly 22 to move back to the initial state.

[0068] 2) When the toilet ring is flushed, since the toilet sewage pipe 4 is in a closed state, the water seal level in the toilet body 10 rises.

[0069] 3) When the toilet is flushed, the lock motor 231 of the lock device 23 drives the lever 232 to push the lock 234 open, and the slider 131 quickly returns to the initial state under the action of the elastic member 73. At this time, negative pressure is generated in the trap, accelerating the formation of siphon.

[0070] 4) After the main flush is completed, water continues to flow into the toilet body 10 to replenish the toilet water seal.

[0071] The second embodiment, referring to Fig.11 .

[0072] Different from the first embodiment, the present embodiment arranges the center lines of the water trap pipe 3, the piston cylinder 6 and the sewage pipe 4 to be on the same plane.

[0073] The third embodiment, referring to Figure 12-17 .

[0074] In this embodiment, a piston cylinder 6 is provided on one side of the sewage pipe 4, and the piston assembly 1 is provided in the piston cylinder 6. The sewage pipe 4 is directly connected to the water trap, and a flap assembly 8 is provided at the connection between the sewage pipe 4 and the water trap pipe 3 as a plugging member. The flap assembly 8 is linked to the piston assembly 1 through a connecting rod 9. When the piston assembly 1 is in an extended state or a retracted state, the corresponding flap assembly 8 is in a closed state ( Fig.14 ) or open state ( Fig.15 ). The retracted state of the piston assembly 1 is the initial state.

[0075] The piston assembly 1 includes a piston head 11, a piston ring 12, a piston rod 13 and a piston fixing cover 14, and the piston ring 12 can slide between the piston head 11 and the piston fixing cover 14. Fig.17 ) to the extended state ( Fig.16 ) moves, the end surface of the piston ring 12 cooperates with the rib 141 on the piston head 11, and an exhaust passage 15 is formed on the piston assembly 1, so that the air in the piston cylinder 6 can be discharged from the exhaust passage 15. Fig.16 ) to the initial state ( Fig.17 ) When the piston ring 12 moves, the end surface of the piston ring 12 is connected with the piston head 11, and the exhaust passage 15 is closed. (The exhaust passage 15 is similar to the first embodiment)

[0076] In the piston cylinder 6, the elastic member 73 is arranged between the piston head 11 and the piston cylinder 6. The initial state of the piston assembly 1 is as follows: Fig.17 The piston motor 21 drives the piston assembly 1 to the extended state through the piston transmission assembly 22, and the piston head 11 squeezes the elastic member 73. At this time, the elastic member 73 is in a compressed state. Fig.16 The piston transmission assembly 22 in this embodiment is a gear 221 rack 222 transmission scheme, and can also use a screw nut, a crank slider 131 or a belt transmission scheme.

[0077] like Fig.13 In this embodiment, the piston transmission assembly 22 includes a piston motor 21, a gear 221, and a rack 222. A piston guide bracket 7 is installed on the rear side of the piston cylinder 6. The piston rod 13 is slidably installed on the piston guide bracket 7. A piston rod 13 sealing ring is installed between the piston rod 13 and the piston guide bracket 7 through a sealing ring fixing cover. The piston motor 21 is connected to a gear 221, and the gear 221 is fixedly connected to the rear end of the piston rod 13. The gear 221 meshes with the rack 222, and the rack 222 is fixed on the piston guide bracket 7. The gear 221 is set as an incomplete gear 221. The piston is in an initial state ( Fig.17 ) moves to the extended state ( Fig.16 ), the gear 221 is disengaged from the rack 222, and the piston assembly 1 quickly returns to the initial state under the action of the elastic member 73.

[0078] The flap assembly 8 and the piston assembly 1 are linked by the connecting rod 9. The flap assembly 8 includes a flap 81, a flap gasket 82, a second torsion spring 83 and a lifting rod 84; the lifting rod 84 is fixedly connected to the flap 81, and a connecting groove 91 is provided on the connecting rod 9. The lifting rod 84 includes a connecting column 85, and the connecting column 85 slides in the connecting groove 91. When the piston assembly 1 moves from the extended state to the initial state, the connecting column 85 on the lifting rod 84 slides on the connecting groove 91. At this time, the connecting rod 9 does not act on the flap assembly 8, and the flap assembly 8 is in a closed state. When the piston assembly 1 is close to the initial state, the connecting column 85 drops to one end of the connecting groove 91 and cannot slide. At this time, the piston assembly 1 opens the flap assembly 8 to the open state through the connecting rod 9.

[0079] The piston cylinder 6 is connected to the sewage pipe 4, and a filter screen 62 is provided at the connection portion with the sewage pipe 4. An exhaust pipe 63 is also connected between the piston cylinder 6 and the sewage pipe 4. When the piston assembly 1 moves from the extended state to the initial state, the air in the piston cylinder 6 is ejected into the sewage pipe 4 from the exhaust pipe 63.

[0080] Fourth embodiment

[0081] A toilet structure is provided, wherein a power-assisted flushing device is installed on the toilet body 10, and the power-assisted flushing device is installed at the rear end of the toilet trap pipe 3. The toilet comprises a rim flushing port 101 and a main flushing port 102. The power-assisted flushing device is the structure of the power-assisted flushing device described in any of the first embodiment, the second embodiment, and the third embodiment.

[0082] The above is only a preferred specific implementation of the present invention, but the design concept of the present invention is not limited to this. Any technician familiar with the technical field who uses this concept to make non-substantial changes to the present invention within the technical scope disclosed by the present invention shall be deemed to infringe the protection scope of the present invention.

Claims

1. A power-assisted flushing device, characterized in that: The flushing device is installed at the rear end of the toilet trap pipe; the flushing device includes a piston assembly, a driving assembly and a blocking member; the rear end of the trap pipe is connected to a sewage pipe, and the piston assembly is connected to the blocking member to drive the blocking member to block or open the connection between the trap and the sewage pipe; The driving component is connected to the intelligent system of the toilet, and the driving component drives the piston component to perform piston movement; when the toilet ring is flushed, the blocking member is blocked, and the sewage pipe is in a closed state; when the toilet is flushed, the blocking member is opened, and the sewage pipe is in an open state; The piston assembly comprises a piston head, a piston ring, a piston rod and a piston fixing cover; the piston head is fixed on the piston fixing cover; the piston ring is capable of sliding between the piston and the piston fixing cover; the end surface of the piston fixing cover facing the piston ring is provided with ribs; The piston extends, and the piston ring retracts to cooperate with the ribs on the piston fixing cover to form an exhaust passage between the piston, the piston ring and the piston fixing cover; The piston retracts and the piston ring moves forward to form a sealing fit with the piston.

2. The power-assisted flushing device according to claim 1, characterized in that: The rear end of the trap pipe is connected with a connecting pipe, the inner cylinder of the connecting pipe is a piston cylinder, the side wall of the piston cylinder is provided with an opening, and the opening is connected with a sewage pipe; A piston guide rail bracket is fixedly provided at the rear end of the connecting pipe, the piston fixing cover is placed in the piston cylinder, and the piston head serves as a blocking member; The piston rod is slidably mounted on the piston guide bracket, and the driving assembly drives the piston rod to cause the piston head to extend or retract in the piston cylinder, and the corresponding piston head blocks or opens the opening.

3. The power-assisted flushing device according to claim 2, characterized in that: The piston guide rail bracket is provided with a guide rail groove and a spring guide column, and the end of the piston rod away from the piston head is provided with a sliding block; The slider is slidably connected with the guide rail groove, and the spring guide column is provided with an elastic member and the slider; the two ends of the elastic member are respectively against the end surfaces of the slider and the piston guide rail bracket; The driving assembly is used to drive the slider to slide along the guide groove to provide a driving force for the piston head to extend; the slider squeezes the elastic member to store energy; after energy storage, the elastic member provides a driving force for the piston to retract.

4. The power-assisted flushing device according to claim 3, characterized in that: The driving assembly includes a piston motor, a piston transmission assembly and a locking device. The piston motor drives the slider to move through the piston transmission assembly; the locking device is used to lock or release the movement of the slider; When the slider is locked, the piston extends and the elastic member stores energy; when the slider is released, the elastic member releases the stored energy and the piston retracts.

5. The power-assisted flushing device according to claim 4, characterized in that: The piston transmission assembly includes a gear, a rack, a limit plate and a rack guide rail bracket; the output end of the piston motor is connected to the gear; the gear is meshed with the rack; The rack guide rail bracket is installed above the piston guide rail bracket, the rack guide rail bracket includes a rack guide rail groove, the rack is slidably connected in the rack guide rail groove, and the slider is connected to the rack.

6. The power-assisted flushing device according to claim 4, characterized in that: The locking device is arranged at the rear end of the connecting tube; the locking device comprises a locking motor, a lever, a latch, a locking buckle and a first torsion spring; the locking buckle is rotatably mounted on the piston guide rail bracket through the latch, and the first torsion spring is arranged on the locking buckle; the output end of the locking motor is connected to the lever; The lock buckle comprises a buckle and a toggle surface; the slider is provided with an inclined surface; in an initial state, the first torsion spring acts on the lock buckle, the buckle is downwardly placed above the spring guide column, and the toggle rod is located below the toggle surface; The slider slides to the inclined surface and pushes the buckle until the buckle passes over the inclined surface. The buckle is buckled at the rear side of the inclined surface under the action of the first torsion spring, and the slider is locked; When the slider is released, the lock motor drives the lever to rotate, the lever moves the moving surface, the buckle is lifted away from the inclined surface, and the slider is released.

7. The power-assisted flushing device according to claim 2, characterized in that: The center lines of the trap pipe, the piston cylinder and the sewage pipe are on the same plane.

8. The power-assisted flushing device according to claim 1, characterized in that: A piston cylinder is provided on one side of the sewage pipe, and the piston assembly is provided in the piston cylinder; a flap assembly is provided at the connection between the sewage pipe and the trap pipe, and the flap assembly is a blocking member; The flapping cover assembly is linked with the piston assembly through a connecting rod. When the piston assembly is in an extended state or a retracted state, the flapping cover assembly is correspondingly in a closed state or an open state.

9. The power-assisted flushing device according to claim 8, characterized in that: The flap cover assembly includes a flap cover, a flap cover gasket, a second torsion spring and a lifting rod; the lifting rod is fixedly connected to the flap cover; The connecting rod is provided with a connecting groove, and the lifting rod comprises a connecting column, and the connecting column slides in the connecting groove.

10. A toilet, characterized in that: A power-assisted flushing device according to any one of claims 1 to 9 is installed at the rear end of the toilet trap pipe.

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