Water tank assembly for closestool

Abstract

The utility model relates to the technical field of toilet accessories, in particular to a water tank assembly for a toilet, which comprises a water tank main body, a water inlet valve main body and a drain valve main body, two groups of mounting holes are formed in the water tank main body, and the water inlet valve main body and the drain valve main body are respectively assembled in the two groups of mounting holes. A main fastening part is constructed on the outer side face of the water inlet valve body and / or the water drainage valve body, an auxiliary fastening part corresponding to the main fastening part is arranged on the inner wall of at least one set of installation holes, the main fastening part and the auxiliary fastening part are clamped with each other, a traditional metal screw connection assembling mode is replaced, and rapid disassembly and assembly are achieved by manually rotating the valve body. The production and assembly procedures of the water tank assembly are simplified, the production period is shortened, and after-sales repair and maintenance are facilitated. Only two groups of mounting holes are arranged, the number of connecting gaps on the water tank body is reduced, the sealing performance of the water tank body is improved, and the risk of water overflow of the water tank is reduced. Metal screw connection is avoided, abrasion to the water tank body is reduced, and the normal service life of the water tank body is kept.

Description

Technical Field

[0001] The utility model relates to the technical field of toilet accessories, in particular to a water tank assembly for a toilet. Background Art

[0002] The toilet water tank is an important part of the toilet. It is used to store and supply water required for flushing the toilet. In the prior art, metal connectors are usually used between the water inlet valve, the drain valve and the water tank body to fix the water inlet valve and the drain valve in the water tank body. For details, please refer to the Chinese utility model patent with announcement number CN217537206U, which records an intelligent toilet water storage tank. According to the attached figure of the specification, it can be seen that connecting holes are opened on the drain valve and the water inlet valve, and corresponding fixing holes are opened on the cover of the water tank body. The drain valve and the water inlet valve are assembled on the water tank body by locking screws in the connecting holes and the fixing holes.

[0003] The aforementioned installation method requires tools for installation and removal of screw connections during the production and assembly of water tank assemblies, and the installation process is cumbersome, increasing the complexity of water tank assembly. Furthermore, due to the use of screw connections, multiple sets of fixing holes and connection holes are often required to more securely mount the inlet and drain valves on the water tank body, resulting in numerous gaps in the water tank body and increasing the risk of leakage. Furthermore, regarding the lifespan of the water tank, metal screws are prone to rusting in humid environments, which in turn shortens the normal lifespan of the water tank. Therefore, further improvements are needed to existing water tank assemblies. Summary of the Invention

[0004] The purpose of the present utility model is to provide a water tank assembly for a toilet, so as to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a water tank assembly for a toilet, comprising a water tank body, a water inlet valve body and a drain valve body, two groups of mounting holes being constructed on the water tank body, the water inlet valve body and the drain valve body being respectively assembled in the two groups of mounting holes, a main fastening part being constructed on the outer surface of the water inlet valve body and / or the drain valve body, and a secondary fastening part corresponding to the main fastening part being provided on the inner wall of at least one group of the mounting holes, and the main fastening part and the secondary fastening part being engaged with each other.

[0006] Wherein, the main fastening part is a fastening buckle, and the secondary fastening part is a snap-fitting protrusion; or, the main fastening part is a snap-fitting protrusion, and the secondary fastening part is a fastening buckle; or, the main fastening part is an external thread, and the secondary fastening part is an internal thread.

[0007] Wherein, an extension platform is provided on the outer side surface of the water inlet valve body and / or the drain valve body. When the water inlet valve body and the drain valve body are assembled on the water tank body, the extension platform is placed on the upper end surface of the water tank body.

[0008] A mounting space is constructed on the fastening buckle, and a notch is constructed on one side of the mounting space. The mounting protrusion can pass through the notch into the mounting space and engage with the fastening buckle.

[0009] Wherein, a convex ring is provided on the outer side surface of the water inlet valve body and / or the drain valve body between the extension platform and the fastening buckle, an inner groove is formed between the convex ring and the extension platform, and a sealing member is embedded in the inner groove.

[0010] Wherein, a rotation-stopping portion is further provided on the outer surface of the water inlet valve body and / or the drain valve body, and a limiting portion is provided on the inner wall of the mounting protrusion and / or the mounting hole, and the limiting portion and the rotation-stopping portion are engaged with each other.

[0011] The fastening buckle is composed of a vertical portion and a horizontal portion, one end of the vertical portion is close to or connected to the convex ring, and the other end of the vertical portion is connected to the horizontal portion, so that a clamping space is formed between the fastening buckle and the convex ring.

[0012] The upper side of at least one end of the transverse portion close to the notch is provided with an inclined surface, and the inclined surface is gradually inclined upward from the end close to the notch toward the inner side of the mounting space.

[0013] The fastening buckles and the snap-fitting protrusions are in multiple groups, and the multiple groups of fastening buckles are arranged corresponding to the multiple groups of snap-fitting protrusions. The multiple groups of fastening buckles are spaced apart in sequence and their notches are arranged in the same direction.

[0014] Wherein, at least the parts of the water inlet valve body and the drain valve body connected to the mounting hole are circular in structure, and the shape of the mounting hole matches the shape of the water inlet valve body and the drain valve body.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: the present application adopts the method of opening two sets of mounting holes on the water tank body, and the drain valve and the water inlet valve are removably assembled on the water tank body by fastening the clips and engaging the snap-fitting protrusions on the inner wall of the mounting holes. The assembly method of fastening the clips and engaging the snap-fitting protrusions replaces the traditional assembly method of connecting with metal screws. The valve body can be quickly installed and removed by simply manually turning the drain valve and the water inlet valve. The easy-to-operate feature greatly simplifies the production and assembly process of the water tank assembly, which is conducive to speeding up the production cycle and also facilitates after-sales repair and maintenance. In addition, since only two sets of mounting holes are required, the number of connection gaps on the water tank body can be reduced, thereby further improving the sealing of the water tank body and helping to reduce the risk of water tank overflow. Secondly, avoiding the use of metal screws can reduce wear on the water tank body and maintain the normal service life of the water tank body. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of a water tank assembly for a toilet;

[0017] Figure 2 A schematic top view of a water tank assembly for a toilet;

[0018] Figure 3 for Figure 2 Schematic diagram of the cross-sectional structure of CC;

[0019] Figure 4 for Figure 2 Schematic diagram of the cross-sectional structure of DD;

[0020] Figure 5 for Figure 3 Schematic diagram of the enlarged structure of part A;

[0021] Figure 6 Schematic diagram of the three-dimensional structure of the water tank body;

[0022] Figure 7 for Figure 6 Schematic diagram of the enlarged structure of part B;

[0023] Figure 8 Schematic diagram of the three-dimensional structure of the water inlet valve;

[0024] Figure 9 This is a schematic diagram of the main structure of the water inlet valve;

[0025] Figure 10 for Figure 9 Schematic diagram of the cross-sectional structure of AA;

[0026] Figure 11 It is a partial main structural diagram of the water inlet valve;

[0027] Figure 12 This is a schematic diagram of the three-dimensional structure of the water-stop component;

[0028] Figure 13 Schematic diagram of the three-dimensional structure of the drain valve;

[0029] Figure 14 This is a schematic diagram of the main structure of the drain valve;

[0030] Figure 15 for Figure 14 Schematic diagram of the cross-sectional structure of the middle BB;

[0031] Figure 16 It is a partial three-dimensional structural diagram of the drain valve;

[0032] The markings of the components in the accompanying drawings are as follows:

[0033] 5-water tank body, 51-mounting hole, 52-secondary fastening part; 1-water inlet valve body; 3-drain valve body; 6-main fastening part, 61-extension platform, 62-clamping space, 63-notch, 64-convex ring, 65-inner groove, 66-stop part, 67-limiting part, 68-vertical part, 69-horizontal part, 610-inclined surface. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0035] Example 1: Figure 1-16 As shown, a water tank assembly for a toilet includes a water tank body 5, a water inlet valve body 1 and a drain valve body 3, two groups of mounting holes 51 are constructed on the water tank body 5, the water inlet valve body 1 and the drain valve body 3 are respectively assembled in the two groups of mounting holes 51, a main fastening part 6 is constructed on the outer surface of the water inlet valve body 1 and / or the drain valve body 3, and a secondary fastening part 52 corresponding to the main fastening part 6 is provided on the inner wall of at least one group of the mounting holes 51, the main fastening part 6 and the secondary fastening part 52 are engaged with each other, the water inlet valve body is detachably assembled at one mounting hole of the water tank body through the cooperation of the main fastening part and the secondary fastening part, and the drain valve body is detachably assembled at the other mounting hole of the water tank body through the cooperation of the main fastening part and the secondary fastening part. Since only two groups of mounting holes are required, the number of connecting gaps on the water tank body can be reduced, thereby further improving the sealing performance of the water tank body.

[0036] Specifically, the main fastening part 6 is a fastening buckle, and the secondary fastening part 52 is a snap-fitting protrusion; or, the main fastening part 6 is a snap-fitting protrusion, and the secondary fastening part 52 is a fastening buckle; or, the main fastening part is an external thread, and the secondary fastening part is an internal thread; or the water inlet valve body and / or the drain valve body are interference fit with the mounting hole, avoiding the use of metal screws to reduce wear on the water tank body and maintain the normal service life of the water tank body.

[0037] In which, an extension platform 61 is provided on the outer side surface of the water inlet valve body 1 and / or the drain valve body 3, and the extension platform is extended outward from the outer side surface of the valve body along the horizontal direction of the valve body. When the water inlet valve body 1 and the drain valve body 3 are assembled on the water tank body 5, the extension platform 61 is placed on the upper end surface of the water tank body 5.

[0038] In this embodiment, a card-mounting space 62 is constructed on the fastening clip, and a notch 63 is constructed on one side of the card-mounting space 62. The water inlet valve and the drain valve are respectively placed in the mounting holes, and the water inlet valve and the drain valve are manually rotated respectively so that the card-mounting protrusion passes through the notch 63 and enters the card-mounting space 62 and engages with the fastening clip, thereby making the water inlet valve and the drain valve detachably assembled on the water tank body.

[0039] Among them, a convex ring 64 is provided on the outer side surface of the water inlet valve body 1 and / or the drain valve body 3 between the extension platform 61 and the fastening buckle, and an inner groove 65 is formed between the convex ring 64 and the extension platform 61. A sealing member is embedded in the inner groove 65. When the water inlet valve and the drain valve are respectively placed in the mounting holes, the sealing member is located in the mounting hole to seal the mounting gap, thereby further improving the sealing performance of the water tank. Among them, the sealing member is an existing sealing ring.

[0040] Specifically, the outer diameter of the extension platform is larger than the inner diameter of the mounting hole, and the outer diameter of the raised ring is smaller than the inner diameter of the mounting hole.

[0041] Among them, a stopper 66 is also provided on the outer surface of the water inlet valve body 1 and / or the drain valve body 3, and a limiting portion 67 is provided on the inner wall of the clamping protrusion and / or the mounting hole 51, and the limiting portion 67 and the stopper 66 are engaged with each other. Specifically, the stopper is a stopper protrusion, and the limiting portion is a limiting groove provided on the clamping protrusion and / or the mounting hole. When the valve body is rotated to make the clamping protrusion engage in the clamping space of the fastening buckle, the stopper protrusion is placed in the limiting groove, further limiting the position of the water inlet valve and the drain valve to prevent the valve body from moving and affecting the normal flushing of the toilet.

[0042] Specifically, the fastening clip is composed of a vertical portion 68 and a transverse portion 69. One end of the vertical portion 68 is close to or connected to the raised ring 64, and the other end of the vertical portion 68 is connected to the transverse portion 69, so that a clamping space 62 is formed between the fastening clip and the raised ring 64. The clamping protrusion is provided to protrude from the inner wall of the mounting hole toward the inner side of the mounting hole.

[0043] Preferably, the transverse portion 69 is provided with an inclined surface 610 on the upper side of at least one end close to the notch 63, and the inclined surface 610 is gradually inclined upward from the end close to the notch toward the inner side of the mounting space 62, which is conducive to the mounting protrusion entering the mounting space more smoothly.

[0044] Among them, the fastening clips and the snap-fitting protrusions are in multiple groups, and the multiple groups of fastening clips are arranged corresponding to the multiple groups of snap-fitting protrusions. The multiple groups of fastening clips are distributed in sequence and their notches 63 are arranged in the same direction, so that the water inlet valve and the drain valve can be more firmly assembled on the water tank body.

[0045] Preferably, the water inlet valve body 1 and the drain valve body 3 at least the part connected to the mounting hole 51 is a circular structure, and the shape of the mounting hole 51 matches the shape of the water inlet valve body 1 and the drain valve body 3, so that the valve body can be quickly installed and uninstalled by manually rotating the valve body. Moreover, the water inlet valve and the drain valve can be installed in any group of mounting holes, and the positions of the water inlet valve and the drain valve can be replaced according to the specific structure of the toilet, thereby enhancing the practicality and adaptability of the water tank assembly.

[0046] In this embodiment, the water tank body includes a cover body and a box body. The cover body and the box body are connected by welding or pasting. Compared with the traditional metal screw connection, the number of connection gaps on the water tank body is reduced, and the sealing of the water tank body is further improved.

[0047] Example 2: Figure 8-12As shown, this embodiment relates to a water inlet device applied to a toilet water tank, comprising a water inlet valve body 1, the water inlet valve body 1 being provided with a water inlet channel 11, the water inlet channel 11 comprising a water inlet end 12 and a water outlet end 13, the water outlet end 13 of the water inlet channel 11 extending downward from the water inlet valve body 1, a first vent portion 14 being constructed on the water inlet channel 11, and an installation station 15 for installing a vent assembly being constructed on the water inlet valve body 1, the installation station 15 being the position where the water inlet valve body 1 is located on one side of the water inlet channel 11, the water inlet valve body 1 also comprising a vent assembly for gas circulation inside and outside the water tank, the vent assembly being arranged on the installation station 15, integrating the vent assembly with the water inlet valve body, and for the installation of the water inlet valve, only a single mounting hole needs to be opened on the water tank for installing the water inlet valve body, thereby reducing the number of mounting ports provided on the water tank, thereby reducing the risk of water leakage from the water tank and further improving the sealing of the water tank. Furthermore, it helps to simplify the installation steps of the water tank assembly and improve the efficiency of the production and assembly of the water tank assembly. Secondly, by changing the water inlet direction and extending the water outlet end 13 to near the bottom of the water tank, since the water in the water tank is not completely drained after the flushing is completed, but there is water at a level not lower than the height of the water inlet of the drain valve, the water inlet end 12 of the water inlet valve is connected to the water supply pipe of the toilet, and the water outlet end 13 is always placed below the liquid surface, so that the water inlet valve is filled with water below the liquid surface, which can greatly reduce the noise generated during the water filling process and achieve the effect of silent water filling of the toilet water tank.

[0048] The water inlet end 12 is connected to the water inlet valve body 1. The water inlet end 12 can extend from the water inlet valve body 1 in different directions, including but not limited to extending to the side of the water inlet valve to form an L-shaped structure with the water outlet end 13; extending upward; or extending downward to form an inverted U-shaped structure with the water outlet end 13. One end of the water outlet end 13 is connected to the water inlet end 12, and the other end of the water outlet end 13 is extended to the lower side of the water inlet valve body 1.

[0049] Among them, the water inlet valve body 1 is provided with a water-stop component for controlling the water inlet amount. The water-stop component is arranged corresponding to the first vent 14. The water-stop component moves with the change of the liquid level in the water tank, thereby controlling the opening and closing of the first vent 14. When the liquid level in the water tank rises, the water-stop component is pushed upward, and the water-stop component blocks the first vent, so that a pressure difference is formed in the water inlet pipe and the water tank, and the water supply pipe cannot replenish water to the inside of the water tank through the water inlet pipe; when the liquid level in the water tank continues to drop, the water-stop component moves downward and the air in the water tank can be discharged through the first vent, and the water supply pipe replenishes water to the inside of the water tank through the water inlet pipe.

[0050] Specifically, the first vent 14 is provided at the bottom of the water inlet valve body 1 at the water inlet end 12 , and the first vent 14 passes through the water inlet channel 11 and the water inlet valve body 1 . The first vent 14 is a through hole.

[0051] Among them, the ventilation component, the water-stop component and the water inlet channel 11 are all arranged on the water inlet valve body 1, integrating the various modules of the water inlet valve into one, which not only simplifies the structure of the water inlet valve, but also reduces the number of mounting holes set on the water tank body, further improves the sealing of the water tank, and reduces the risk of water leakage from the water tank.

[0052] The vent assembly includes a second vent portion 16, which is disposed on and extends through the mounting station 15 of the water inlet valve body 1. The second vent portion 16 is a through hole for allowing air to circulate inside and outside the water tank. The vent assembly also includes a seal 17, which is movable along the axial direction of the second vent portion 16, thereby controlling the opening and closing of the second vent portion 16 as the liquid level changes. Specifically, a connecting shaft 19 is constructed on the upper side of the seal 17, and an anti-slip portion 110 is provided at the end of the connecting shaft 19 opposite to the seal 17. The connecting shaft 19 of the seal 17 is inserted in the second vent portion 16, and the anti-slip portion 110 is placed above the installation station 15, so that the seal 17 is always assembled at the second vent portion 16. The length of the connecting shaft 19 is greater than the depth of the second vent portion 16. When the water tank is in a water replenishing state or the water level is lower than the seal during drainage, the anti-slip portion is hung on the second vent portion at the installation station. There is a gap between the seal and the second vent portion to facilitate air circulation inside and outside the water tank. When the liquid level in the water tank reaches a preset height, the water in the water tank pushes the seal 17 to block the second vent portion, increasing the pressure difference between the inside of the water tank and the inside of the water inlet pipe, preventing the water supply pipe from replenishing water into the water tank, and further improving the sealing of the water inlet valve to prevent continuous water inflow and exceeding the preset liquid level.

[0053] Preferably, a fixing ring is provided on the periphery of the second vent portion 16 of the water inlet valve body 1, and the sealing member 17 is made of soft rubber material. When the sealing member 17 blocks the second vent portion, the outer edge of the sealing member 17 abuts against the inner wall of the fixing ring, further enhancing the sealing performance of the water inlet valve.

[0054] Among them, the water stop assembly includes a stopper 21, and the stopper 21 is arranged corresponding to the first vent 14. The stopper 21 can move along the axial direction of the first vent 14. Specifically, the stopper 21 is assembled on the bottom surface of the water inlet valve body 1, and a rotating seat is provided on the bottom surface of the water inlet valve body 1. The rotating seat has a rotating hole, and a rotating shaft is provided on one side of the stopper 21. The rotating shaft can be rotatably assembled in the rotating hole of the rotating seat. A sealing block is provided at the corresponding position of the stopper 21 and the first vent 14. The sealing block is made of soft rubber material. When the preset water level is reached, the water pushes the stopper to rotate upward, so that the sealing block is blocked at the first vent.

[0055] In which, the water-stop assembly also includes a floating part 22, and the floating part 22 is at least partially located on the side of the stop part 21 opposite to the first vent portion 14 or at least partially connected to the stop part 21. A guide shaft 18 is constructed on the water inlet valve body 1, and a slide groove 23 is provided on the floating part 22. The floating part 22 is slidably assembled on the guide shaft 18 by being sleeved on the guide shaft 18 through the slide groove 23, wherein a stop block is provided at the end of the guide shaft 18, and the outer diameter of the stop block is larger than the inner diameter of the slide groove 23, so that the floating part is always sleeved on the guide shaft. The stop block can be a screw or the end of the guide shaft with an increased outer diameter.

[0056] When the water in the water tank reaches a preset liquid level, the water pushes the floating part upward and drives the stopper to rotate upward, so that the sealing block on the stopper blocks the first vent, preventing water from entering the water inlet pipe; when the water level in the water tank drops, the floating part moves downward, and there is movable space between the floating part and the stopper, so the stopper rotates downward, eliminating the blockage of the first vent, allowing water to flow through the water inlet pipe normally, thereby replenishing the water tank.

[0057] Preferably, an outer ring wall 111 is constructed on the upward and / or downward side of the outer periphery of the water inlet valve body 1 to form an installation space 112, the installation station 15 is placed in the installation space 112, and the water stop assembly is located on the lower side of the water inlet valve body 1.

[0058] In this embodiment, the locking buckle, the extension platform, and the protruding ring are all arranged on the lower side of the outer ring wall to ensure that when the water inlet valve is assembled on the water tank body, the ventilation assembly, the water inlet end, and the first ventilation part are exposed to the water tank body.

[0059] Example 3, as Figure 13-16As shown, a drainage device for a toilet water tank includes a drainage valve body 3 with a cavity constructed therein, the drainage valve body 3 having a water inlet 31 and a water outlet 32 ​​connected to the cavity, the drainage valve body 3 is provided with a water guide component for bringing water into the cavity corresponding to the water inlet 31, a water guide portion 33 is provided between the side wall of the drainage valve body 3 and the periphery of the water guide component, the upper side surface of the water guide portion 33 is gradually inclined upward from its bottom along the direction of rotation of the water guide component, wherein the water guide component includes an impeller 41 and a driving member 42 for driving the impeller to rotate, the impeller 41 is located in the cavity and is arranged corresponding to the water inlet 31, the driving member drives the impeller to rotate, and uses the centrifugal force generated by the rotation of the impeller to bring water in the water tank into the cavity and the water flow is thrown to the end of the blade and collected on the blade The outer periphery of the blade is pushed by the rotation of the impeller to flow upward along the water guide spiral and then discharged through the water outlet. The centrifugal force of the impeller is used to throw the water in the water tank into the drain valve, and the water is sent upward through the water guide spiral, which speeds up the water inlet speed, thereby effectively increasing the water output of the drain valve. When the water outlet of the drain valve is connected to the downflush channel of the toilet, during the flushing process, the larger water flow can more fully fill the downflush channel, reduce the friction between the water flow and the air in the downflush channel, and make the toilet cleaning process quieter. Secondly, since this solution integrates multiple components such as the water guide assembly, water flow channel, and diversion part into one, the pipe connection between the components is reduced, making the overall structure of the drain valve simpler. The integrated drainage device can effectively simplify the production and assembly process of the water tank assembly, and facilitate maintenance and replacement of components during daily use.

[0060] Among them, the driving member 42 is a motor, preferably a brushless motor, and the impeller 41 includes a wheel disc, one side of the wheel disc is connected to the rotor of the brushless motor, and blades are vertically arranged on the other side of the wheel disc. The impeller 41 is placed along the axial direction of the water inlet 31. The impeller and the brushless motor are existing structures and are not described in detail in this solution.

[0061] Specifically, the drain valve body 3 includes a hollow outer shell, a water supply part is embedded in one side of the outer shell, the water guide part 33 is arranged on the inner wall of the water supply part, the water inlet 31 is arranged at the bottom of the water supply part, and an installation groove is constructed in the middle of the water supply part. A rotating shaft is inserted into the installation groove, and the impeller and the rotor of the motor are sleeved on the rotating shaft. When the motor is energized, the impeller rotates, and then the water in the water tank is sucked into the water supply part by centrifugal force.

[0062] Preferably, there is a gap between the water inlet 31 and the inner side surface of the water guide 33 to form a water-starting transition section 34, and a water storage space 35 is formed between the inner wall of the drain valve body 3 and the water-starting transition section 34. The water guide 33 is placed in the water storage space 15, so that the impeller uses centrifugal force to suck the water flow in the water supply part and throw it to the outside of the impeller, and collect it in the water storage space outside the impeller to prevent the water flow from flowing back into the water tank again. The water guide 33 has an arc-shaped structure on the side facing the impeller, so that the inner wall of the water guide 33 is close to the outer side surface of the impeller 41, which facilitates the water flow collected in the water storage space to be transported upward along the water guide as the impeller rotates continuously and is pushed by centrifugal force, so as to realize rapid water supply of the drain valve, thereby increasing the water output of the drain valve.

[0063] In this embodiment, the inner wall of the drain valve body 3 is inclined at least on one side close to the impeller 41, and the inner wall of the drain valve body 3 gradually inclines outward from its bottom. Specifically, the inner wall of the water supply part is inclined, which helps the water flow to spiral upward along the water guide part.

[0064] Among them, the water guide parts 33 are in multiple groups, and the multiple groups of water guide parts 33 are arranged in sequence and distributed around the outer circumference of the impeller 41. They can timely transport more water sucked into the water supply part by the impeller upward, effectively increasing the water output of the drain valve.

[0065] Preferably, an outer cover 39 is provided on the outside of the water inlet 31 of the drain valve body 3. The outer cover 39 is hollow and has several groups of water holes 310. When the water diversion component is started, the water in the water tank enters the water supply part from the water inlet through the water holes. The outer cover is used to separate the water inlet from the inner wall of the water tank to ensure that the water inlet channel of the water inlet is unobstructed.

[0066] Among them, the driving member 42 is assembled in the cavity of the drain valve body 3 through the connecting part 36, and a water passage 37 is provided between the outer wall of the driving member 42 and the inner wall of the cavity. The water guide part 33 and the connecting part 22 are staggered with each other. Specifically, the connecting part is a groove body and a connecting column arranged inside the outer shell. The motor body is placed in the groove body, one end of the connecting column is connected to the outer wall of the groove body, and the other end of the connecting column is connected to the inner wall of the outer shell, thereby fixing the groove body inside the outer shell. A placement channel is constructed between the groove body and the outer shell, and the placement channel passes through the outer shell and the groove body. The power supply line on the motor passes through the placement channel and is exposed to the drain valve, which is convenient for powering the motor.

[0067] Among them, the drain valve body also includes a water flow shell with a hollow internal structure, and the water flow shell is assembled on the side of the outer shell opposite to the water supply part. Preferably, the inner diameter of the water flow shell at least on the side close to the water outlet is smaller than the inner diameter of the outer shell, which is conducive to enhancing the water pressure of the water outlet and making the toilet clean better.

[0068] Preferably, an extension platform extending outward from the outer wall of the water flow housing is constructed on the water flow housing at the water outlet, a one-way valve is installed on the extension platform, and the one-way valve cover is arranged on the upper side of the water outlet.

[0069] In this embodiment, the drain valve body 3 is provided with a diverter 38 at the water outlet 32. The diverter 38 communicates with the cavity within the drain valve body 3. Specifically, the diverter 38 is mounted on the side of the water flow housing near the water outlet. The extension platform is provided with a peripheral edge around the one-way valve. The inner wall of the peripheral edge is provided with an internal thread, and the outer wall of the diverter is provided with an external thread. The diverter is removably mounted on the water flow housing through the mating of the external and internal threads, facilitating the replacement of different types of diverters and enhancing the adaptability of the drain valve. The diverter is provided with an upper flush outlet and a lower flush outlet. The upper flush outlet is connected to the upper flush outlet of the toilet, allowing water to spiral around the side wall of the toilet bowl. The lower flush outlet is connected to the lower flush outlet of the toilet, allowing water to drain under the spiral flow, achieving a silent flushing effect.

[0070] In this embodiment, the drain valve body 3 is located on the lower side of the connecting platform and is constructed with an annular wall, which extends from the lower side of the connecting platform toward the bottom of the drain valve body 3. The locking buckle and the raised ring are both arranged on the outer side of the annular wall to ensure that the diverter is exposed to the water tank body.

[0071] The above shows and describes the basic principles, main features, and advantages of the present invention. Persons skilled in the art should understand that the present invention is not limited to the above-described embodiments. The above-described embodiments and descriptions are merely preferred examples of the present invention and are not intended to limit the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A water tank assembly for a toilet, comprising a water tank body, a water inlet valve body, and a drain valve body, characterized in that: Two groups of mounting holes are constructed on the water tank body, and the water inlet valve body and the drain valve body are respectively assembled in the two groups of mounting holes. A main fastening part is constructed on the outer surface of the water inlet valve body and / or the drain valve body, and a secondary fastening part corresponding to the main fastening part is provided on the inner wall of at least one group of the mounting holes, and the main fastening part and the secondary fastening part are engaged with each other.

2. A water tank assembly for a toilet according to claim 1, characterized in that: The main fastening part is a fastening buckle, and the secondary fastening part is a snap-fitting protrusion; or, the main fastening part is a snap-fitting protrusion, and the secondary fastening part is a fastening buckle; or, the main fastening part is an external thread, and the secondary fastening part is an internal thread.

3. A water tank assembly for a toilet according to claim 2, characterized in that: An extension platform is provided on the outer side surface of the water inlet valve body and / or the drain valve body. When the water inlet valve body and the drain valve body are assembled on the water tank body, the extension platform is placed on the upper end surface of the water tank body.

4. A water tank assembly for a toilet according to claim 3, characterized in that: A mounting space is constructed on the fastening buckle, and a notch is constructed on one side of the mounting space. The mounting protrusion can pass through the notch into the mounting space and engage with the fastening buckle.

5. A water tank assembly for a toilet according to claim 4, characterized in that: A convex ring is provided on the outer side surface of the water inlet valve body and / or the drain valve body between the extension platform and the fastening buckle, an inner groove is formed between the convex ring and the extension platform, and a sealing member is embedded in the inner groove.

6. A water tank assembly for a toilet according to claim 2, characterized in that: A rotation-stopping portion is further provided on the outer side of the water inlet valve body and / or the drain valve body, and a limiting portion is provided on the inner wall of the mounting protrusion and / or the mounting hole, and the limiting portion and the rotation-stopping portion are engaged with each other.

7. The water tank assembly for a toilet according to claim 5, characterized in that: The fastening buckle consists of a vertical portion and a horizontal portion, one end of the vertical portion is close to or connected to the convex ring, and the other end of the vertical portion is connected to the horizontal portion, so that a clamping space is formed between the fastening buckle and the convex ring.

8. A water tank assembly for a toilet according to claim 7, characterized in that: The upper side of at least one end of the transverse portion close to the notch is provided with an inclined surface, and the inclined surface is gradually inclined upward from the end close to the notch toward the inner side of the mounting space.

9. The water tank assembly for a toilet according to claim 4, characterized in that: The fastening buckles and the clamping protrusions are in multiple groups, and the multiple groups of fastening buckles are arranged corresponding to the multiple groups of clamping protrusions. The multiple groups of fastening buckles are distributed in sequence and their notches are arranged in the same direction.

10. A water tank assembly for a toilet according to any one of claims 1 to 9, characterized in that: At least the parts of the water inlet valve body and the drain valve body connected to the mounting hole are circular in structure, and the shape of the mounting hole matches the shape of the water inlet valve body and the drain valve body.

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