Overflow structure and closestool

Abstract

The utility model relates to the technical field of bathroom appliances, and discloses an overflow structure and a closestool, the overflow structure comprises a water tank and an elastic overflow sleeve; the water tank comprises a tank main body and an overflow part, the tank main body is provided with a water storage cavity, the overflow part is connected to the tank main body, and the overflow part is provided with an overflow port communicated with the water storage cavity; the elastic overflow sleeve is provided with an overflow channel, the elastic overflow sleeve is connected to the overflow part, and the overflow channel is communicated with the water storage cavity through the overflow port; according to the overflow structure provided by the utility model, the elastic overflow sleeve is connected to the overflow port of the water tank, and the elastic overflow sleeve can generate corresponding elastic deformation according to the deformation condition of ceramic, so that the tightness and the stability of integral assembly of the water tank and the ceramic component are improved; the elastic overflow sleeve can maintain a stable overflow channel through elastic deformation of the elastic overflow sleeve, it is guaranteed that the overflow function meets the national standard requirement, and normal use of the closestool water tank is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to bathroom appliance technical field, especially a kind of overflow structure and closestool. BACKGROUND

[0002] In the field of high-end bathroom appliance products, as consumers' demand for product function diversification continues to rise, the high-end cover plate of closestool water tank integrates various functional components such as spray gun structure, warm air structure, deodorization structure, night light structure and foam shield liquid outlet structure; this makes the high-end cover plate occupy a large amount of space in the core layout, especially in the key position of the core and the ceramic component cooperation, occupying a large amount of space; at the same time, in view of the symmetry and beauty of ceramic products, the overflow port of closestool water tank is usually arranged near the ceramic component, as the high-end cover plate occupies a large amount of space in the position of the core and the ceramic component cooperation, the installation position and installation space of closestool overflow port are severely limited; however, the overflow of water tank must strictly meet the national standard requirements, under the existing circumstances, the overflow structure of traditional closestool water tank adopts hard plastic overflow sleeve connected to the overflow port to meet the national standard requirements; however, such overflow structure faces a dilemma; on the one hand, as ceramic will produce about 6mm deformation during high temperature sintering process, hard plastic overflow sleeve needs to reserve 6-8mm gap between ceramic wall, which affects the tightness and stability of the overall assembly of water tank and ceramic component, and reduces the product performance; on the other hand, the complex functional structure layout of the core and the ceramic at the overflow port further compresses the available space of hard plastic overflow sleeve, making it difficult for traditional hard plastic overflow sleeve design to meet the overflow requirements. SUMMARY

[0003] To solve at least one of the problems in the prior art, the utility model aims to provide an overflow structure and a closestool with the overflow structure, which helps to improve the tightness and stability of the overall assembly of water tank and ceramic component and ensure that the overflow function meets the national standard requirements.

[0004] To achieve the above-mentioned purpose, the utility model provides an overflow structure, which comprises a water tank and an elastic overflow sleeve; the water tank comprises a tank main body and an overflow part, the tank main body has a water storage cavity, the overflow part is connected to the tank main body, and the overflow part has an overflow port communicating with the water storage cavity; the overflow structure has an overflow channel, and the elastic overflow sleeve is connected to the overflow part, and the overflow channel communicates with the water storage cavity through the overflow port.

[0005] In some embodiments, the elastic overflow sleeve is fixedly sleeved on the outer wall of the overflow part and is in interference fit with the overflow part.

[0006] In some embodiments, the overflow structure further comprises a pressing block; the overflow part comprises a first side plate, a first bottom plate and a second side plate, the first bottom plate is connected to the lower end of the first side plate, the second side plate is connected to the water tank and is connected to the end of the first bottom plate away from the first side plate, the two ends of the pressing block are connected to the first side plate and the second side plate respectively, and the first side plate, the first bottom plate and the second side plate are connected to the tank body and surround the overflow port; one end of the pressing block is connected to the upper end of the first side plate, the other end is connected to the upper end of the second side plate, and the elastic overflow sleeve is sleeved and fixed on the outer wall of the pressing block and is in interference fit with the pressing block.

[0007] In some embodiments, the top of the pressing block is provided with a connecting column, the elastic overflow sleeve is provided with a connecting hole communicating with the overflow channel, and the connecting column is arranged in the connecting hole.

[0008] In some embodiments, the upper end of the first side plate is concave downward and provided with a first mounting groove, and the upper end of the second side plate is concave downward and provided with a second mounting groove; the pressing block comprises a main body part, a first mounting part and a second mounting part, the first mounting part is connected to one end of the main body part and embedded in the first mounting groove, and the second mounting part is connected to the end of the main body part away from the first mounting part and embedded in the second mounting groove.

[0009] In some embodiments, the end of the first mounting part away from the main body part is provided with a first limiting protrusion, and the end of the second mounting part away from the main body part is provided with a second limiting protrusion; the sidewall of the first mounting groove is provided with a first limiting groove for embedding the first limiting protrusion, and the sidewall of the second mounting groove is provided with a second limiting groove for embedding the second limiting protrusion.

[0010] In some embodiments, the outer wall of the overflow part is provided with a first water sealing groove, and the inner wall of the overflow channel is provided with a first water sealing protrusion embedded with the first water sealing groove.

[0011] In some embodiments, the inner wall of the overflow channel is provided with a second water sealing groove, and the outer wall of the overflow part is provided with a second water sealing protrusion embedded with the second water sealing groove.

[0012] In some embodiments, the material of the elastic overflow sleeve is rubber material.

[0013] The utility model also provides a closestool, the closestool comprises the overflow structure according to any one of the above.

[0014] This utility model embodiment provides an overflow structure that, compared with the prior art, has the following advantages: By connecting the elastic overflow sleeve to the overflow port of the water tank, the elastic overflow sleeve, due to its characteristic of easily undergoing elastic deformation when subjected to compression, can undergo corresponding elastic deformation according to the deformation of the ceramic when fitted between the water tank and the ceramic. This eliminates the need for a large gap like traditional rigid plastic overflow sleeves, thus improving the tightness and stability of the overall assembly of the water tank and ceramic components, and enhancing product performance. Furthermore, even in complex spatial environments and under ceramic deformation conditions, the elastic overflow sleeve can maintain a stable overflow channel through its own elastic deformation, ensuring that the overflow function meets national standards and guaranteeing the normal use of the toilet tank. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of an overflow structure provided in Embodiment 1 of this utility model;

[0016] Figure 2 This is a schematic diagram of an overflow structure provided in Embodiment 1 of this utility model, omitting the elastic overflow sleeve;

[0017] Figure 3 This is a schematic diagram of the water tank provided in Embodiment 1 of this utility model from a first-view perspective;

[0018] Figure 4 yes Figure 3 Enlarged view of point A;

[0019] Figure 5 This is a structural schematic diagram of the water tank provided in Embodiment 1 of this utility model from a second perspective;

[0020] Figure 6 yes Figure 5 Enlarged view of point B;

[0021] Figure 7 This is a schematic diagram of the structure of the elastic overflow sleeve provided in Embodiment 1 of this utility model;

[0022] Figure 8 This is a schematic diagram of the structure of the pressure block provided in Embodiment 1 of this utility model;

[0023] Figure 9 This is a side view of the pressure block provided in Embodiment 1 of this utility model;

[0024] Figure 10 This is a schematic diagram of an overflow structure provided in Embodiment 2 of this utility model, omitting the elastic overflow sleeve;

[0025] Figure 11 This is a side view of an overflow structure provided in Embodiment 2 of this utility model, omitting the elastic overflow sleeve;

[0026] Figure 12 This is a schematic diagram of the structure of the elastic overflow sleeve provided in Embodiment 2 of this utility model.

[0027] In the diagram, 1 is the water tank; 11 is the tank body; 12 is the overflow section; 111 is the water storage chamber; 112 is the water inlet; 120 is the overflow outlet; 121 is the first side plate; 122 is the bottom plate; 123 is the second side plate; 124 is the first water-sealing groove; 125 is the second water-sealing protrusion; 1211 is the first mounting groove; 1231 is the second mounting groove; 12111 is the first limiting groove; 12311 is the second limiting groove.

[0028] 2. Elastic overflow sleeve; 20. Overflow channel; 21. First sealing protrusion; 22. Second sealing groove; 23. Connecting hole;

[0029] 3. Pressing block; 31. Main body; 32. First mounting part; 33. Second mounting part; 311. Connecting column; 321. First limiting protrusion; 331. Second limiting protrusion. Detailed Implementation

[0030] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0031] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0032] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

[0033] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0034] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0035] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having" and any variations thereof in the description, claims and foregoing drawings of this application are intended to cover non-exclusive inclusion.

[0036] In this application, the reference to "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments.

[0037] Example 1

[0038] like Figures 1-9 As shown, the first embodiment of this utility model provides an overflow structure, including a water tank 1 and an elastic overflow sleeve 2.

[0039] The water tank 1 includes a tank body 11 and an overflow section 12. The tank body 11 has a water storage cavity 111. The overflow section 12 is connected to the tank body 11 and has an overflow port 120 that communicates with the water storage cavity 111. The elastic overflow sleeve 2 has an overflow channel 20. The elastic overflow sleeve 2 is connected to the overflow section 12. The overflow channel 20 communicates with the water storage cavity 111 through the overflow port 120, so that the liquid in the water storage cavity 111 flows to the overflow channel 20 through the overflow port 120.

[0040] Based on this technical solution, by connecting the elastic overflow sleeve 2 to the overflow port 120 of the water tank 1, the elastic overflow sleeve 2 has the characteristic of easily undergoing elastic deformation when subjected to compression. Therefore, when the elastic overflow sleeve 2 is assembled between the water tank 1 and the ceramic component, the elastic overflow sleeve 2 can undergo corresponding elastic deformation according to the deformation of the ceramic. This eliminates the need for a large gap like traditional rigid plastic overflow sleeves, thus improving the tightness and stability of the overall assembly between the water tank 1 and the ceramic component, and enhancing product performance. At the same time, even in complex spatial environments and under ceramic deformation, the elastic overflow sleeve 2 can maintain a stable overflow channel 20 through its own elastic deformation, ensuring that the overflow function meets national standards and guaranteeing the normal use of the toilet tank 1.

[0041] In this embodiment, the elastic overflow sleeve 2 is made of rubber. Rubber has good elastic deformation capability.

[0042] In this first embodiment, the overflow section 12 is connected to the top of the box body 11.

[0043] In this first embodiment, the overflow section 12 is integrally formed on the main body 11 of the box.

[0044] In some other embodiments, the overflow section 12 may also be connected to the middle or upper part of the box body 11.

[0045] The bottom of the main body 11 is provided with an inlet 112 that is connected to the water storage tank 1.

[0046] The elastic overflow sleeve 2 is fitted and fixed to the outer wall of the overflow part 12 and has an interference fit with the overflow part 12. Using a sleeve connection to connect the elastic overflow sleeve 2 to the outer wall of the overflow part 12 facilitates the assembly of the elastic overflow sleeve 2 and the overflow part 12, simplifying the assembly process. The interference fit between the elastic overflow sleeve 2 and the outer wall of the overflow part 12 ensures that the elastic overflow sleeve 2 is firmly connected to the overflow part 12, preventing it from easily detaching from the overflow part 12 regardless of water flow impact or external vibration, thus ensuring the integrity and stability of the overflow structure. Simultaneously, the interference fit helps prevent water in the water tank 1 from leaking out from the connection between the overflow sleeve and the overflow part 12. This not only avoids water waste but also prevents problems such as dampness and bacterial growth around the bathroom fixtures caused by leakage, while also protecting the water tank 1 and other components, extending the overall lifespan of the toilet.

[0047] Preferably, the interference fit on one side of the outer wall of the elastic overflow sleeve 2 and the overflow part 12 is ≥1mm.

[0048] The overflow structure provided in this embodiment also includes a pressure block 3.

[0049] The overflow section 12 includes a first side plate 121, a first bottom plate 122, and a second side plate 123. The first side plate 121 is connected to the water tank 1, the first bottom plate 122 is connected to the water tank 1 and to the lower end of the first side plate 121, and the second side plate 123 is connected to the water tank 1 and to the end of the first bottom plate 122 away from the first side plate 121. The two ends of the pressure block 3 are respectively connected to the first side plate 121 and the second side plate 123. The first side plate 121, the first bottom plate 122, and the second side plate 123 form an overflow port 120. One end of the pressure block 3 is connected to the upper end of the first side plate 121, and the other end is connected to the upper end of the second side plate 123. The elastic overflow sleeve 2 is sleeved and fixed to the outer wall of the pressure block 3 and is interference-fitted with the pressure block 3.

[0050] By connecting the two ends of the pressure block 3 to the upper ends of the first side plate 121 and the second side plate 123 respectively, the pressure block 3 can seal the upward-opening opening of the overflow port 120. At the same time, by making the inner wall of the elastic overflow sleeve 2 and the outer wall of the pressure block 3 interference fit, the elastic overflow sleeve 2 can be firmly connected to the pressure block 3, so that the elastic overflow sleeve 2 is not easy to fall off the pressure block 3 regardless of water flow impact or external vibration, thus ensuring the integrity and stability of the overflow structure. Since the inner wall of the elastic overflow sleeve 2 is interference fit with both the outer wall of the overflow part 12 and the outer wall of the pressure block 3, the inner wall of the overflow channel 20 is continuously and tightly connected to the overflow part 12 and the pressure block 3, which improves the sealing performance when the elastic overflow sleeve 2 is sleeved and fixed on the overflow part 12, and better prevents water in the water tank 1 from seeping out from the connection between the elastic overflow sleeve 2 and the overflow part 12.

[0051] The top of the pressure block 3 is provided with a connecting post 311, and the elastic overflow sleeve 2 is provided with a connecting post 311 passing through the connecting hole 23. The connecting hole 23 is connected to the overflow channel 20. When the elastic overflow sleeve 2 is sleeved and fixed to the pressure block 3, the inner sidewall of the overflow channel 20 is tightly attached to the outer wall of the pressure block 3, that is, the elastic overflow sleeve 2 and the pressure block 3 are sealed together.

[0052] By setting a connecting post 311 on the top of the pressure block 3 and a connecting hole 23 that mates with the connecting post 311 on the elastic overflow sleeve 2, the connection between the pressure block 3 and the elastic overflow sleeve 2 is further strengthened through the mutual connection of the connecting post 311 and the connecting hole 23, ensuring that the elastic overflow sleeve 2 will not loosen or fall off during long-term use. The precise fit between the connecting post 311 and the connecting hole ensures that the elastic overflow sleeve 2 is more fixed in position after assembly, stably maintaining the shape and position of the overflow channel 20. Even when the water pressure inside the water tank 1 changes or the equipment is subjected to external impact, the overflow channel 20 will not deform or shift, ensuring that the overflow function always operates normally, strictly meeting the relevant overflow standards and providing users with a reliable user experience. During assembly, the connecting post 311 and the connecting hole also provide clear positioning markers for installation. Installers only need to align the connecting post 311 with the connecting hole and insert it to quickly complete the initial positioning of the elastic overflow sleeve 2 and the pressure block 3. Then, with the interference fit, the installation is completed. This reduces the installation difficulty, improves the assembly efficiency, reduces product quality problems caused by improper installation, and lowers production costs.

[0053] The upper end of the first side plate 121 is recessed downward and provided with a first mounting groove 1211, and the upper end of the second side plate 123 is recessed downward and provided with a second mounting groove 1231; the pressure block 3 includes a main body 31, a first mounting part 32 and a second mounting part 33, the first mounting part 32 is connected to one end of the main body 31 and embedded in the first mounting groove 1211, and the second mounting groove 1231 is connected to the end of the main body 31 away from the first mounting part 32 and embedded in the second mounting groove 1231.

[0054] By setting a first mounting groove 1211 and a second mounting groove 1231 on the first side plate 121 and the second side plate 123 respectively, and embedding the first mounting part 32 and the second mounting part 33 of the pressure block 3 into the first mounting groove 1211 and the second mounting groove 1231 respectively, this embedded design of the mounting part and the mounting groove allows the installer to quickly find the correct installation position of the pressure block 3 during assembly without repeated adjustments, shortening the installation time. Combined with the positioning of the connecting column 311 and the connecting hole, the overall assembly efficiency is further improved and the labor cost is reduced. At the same time, the tight fit between the first mounting part 32 and the first mounting groove 1211, and the second mounting part 33 and the second mounting groove 1231, makes the connection between the pressure block 3 and the overflow part 12 more secure. During the operation of the water tank 1, the pressure block 3 is not easy to shift or loosen, whether due to water flow impact or equipment vibration. Through the combined effect of the mounting part embedded in the mounting groove, the connecting post 311 embedded in the connecting hole 23, and the interference fit between the pressure block 3 and the elastic overflow sleeve 2, the stability of the entire overflow structure can be enhanced, ensuring that the product maintains good performance during long-term use and extending the product's service life.

[0055] In this first embodiment, the connecting post 311 is located at the top of the main body 31.

[0056] The first mounting part 32 has a first limiting protrusion 321 at the end away from the main body 31, and the second mounting part 33 has a second limiting protrusion 331 at the end away from the main body 31. The side wall of the first mounting groove 1211 has a first limiting groove 12111 for the first limiting protrusion 321 to be inserted into, and the side wall of the second mounting groove 1231 has a second limiting groove 12311 for the second limiting protrusion 331 to be inserted into. By using the first limiting protrusion 321 to be inserted into the first limiting groove 12111 and the second limiting protrusion 331 to be inserted into the second limiting groove 12311, an additional limiting structure is formed. When the water tank 1 is subjected to complex external forces, such as strong vibration or violent impact of water flow, this limiting structure can effectively prevent the pressure block 3 from sliding, rotating or other displacement phenomena in the mounting groove, ensuring that the pressure block 3 is always in the correct position. Combined with other connection methods between the pressure block 3 and the side plate, it further stabilizes the entire overflow structure.

[0057] In this first embodiment, the first limiting protrusion 321 has a dotted structure, and the second limiting protrusion 331 has a dotted structure.

[0058] In this first embodiment, the outer wall of the overflow section 12 is provided with a first water-sealing groove 124, and the inner wall of the overflow channel 20 is provided with a first water-sealing protrusion 21 that fits into the first water-sealing groove 124. Specifically, the first water-sealing groove 124 is continuously provided on the outer walls of the first side plate 121, the first bottom plate 122, and the second side plate 123.

[0059] The structure of the water-sealing groove and the water-sealing protrusion is used to form an additional waterproof barrier at the connection between the elastic overflow sleeve 2 and the overflow part 12, which can better prevent water in the water tank 1 from seeping out from the connection between the elastic overflow sleeve 2 and the overflow part 12; at the same time, the elastic overflow sleeve 2 can be more firmly connected to the overflow part 12, which can better ensure the integrity and stability of the overflow structure.

[0060] Example 2

[0061] See Figures 10-12 The only difference from Embodiment 1 is that the overflow channel 20 of the overflow structure provided in Embodiment 2 has a second water-sealing groove 22 on its inner wall, and the overflow part 12 has a second water-sealing protrusion 125 that fits into the second water-sealing groove 22 on its outer wall.

[0062] The second water-sealing protrusion 125 is continuously provided on the outer wall of the first side plate 121, the first bottom plate 122 and the second side plate 123.

[0063] The present invention also provides a toilet, which includes an overflow structure according to any of the above embodiments.

[0064] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present utility model, and these improvements and substitutions should also be considered within the protection scope of the present utility model.

Claims

1. An overflow structure, characterized in that, include: A water tank (1) includes a tank body (11) and an overflow section (12). The tank body (11) has a water storage cavity (111). The overflow section (12) is connected to the tank body (11). The overflow section (12) has an overflow port (120) that communicates with the water storage cavity (111). An elastic overflow sleeve (2) has an overflow channel (20). The elastic overflow sleeve (2) is connected to the overflow part (12). The overflow channel (20) is connected to the water storage cavity (111) through the overflow port (120).

2. The overflow structure according to claim 1, characterized in that, The elastic overflow sleeve (2) is sleeved and fixed to the outer wall of the overflow part (12) and has an interference fit with the overflow part (12).

3. The overflow structure according to claim 2, characterized in that, It also includes a pressure block (3); the overflow section (12) includes a first side plate (121), a first bottom plate (122) and a second side plate (123), the first bottom plate (122) is connected to the lower end of the first side plate (121), the second side plate (123) is connected to the water tank (1) and to the end of the first bottom plate (122) away from the first side plate (121), the two ends of the pressure block (3) are respectively connected to the first side plate (121) and the second side plate (123), the first side plate (121), the first bottom plate (122) and the second side plate (123) are all connected to the tank body (11) and form the overflow port (120); One end of the pressure block (3) is connected to the upper end of the first side plate (121), and the other end is connected to the upper end of the second side plate (123). The elastic overflow sleeve (2) is sleeved and fixed to the outer wall of the pressure block (3) and has an interference fit with the pressure block (3).

4. The overflow structure according to claim 3, characterized in that, The top of the pressure block (3) is provided with a connecting post (311), and the elastic overflow sleeve (2) is provided with a connecting hole (23), and the connecting post (311) passes through the connecting hole (23).

5. The overflow structure according to claim 3, characterized in that, The upper end of the first side plate (121) is recessed downward and provided with a first mounting groove (1211), and the upper end of the second side plate (123) is recessed downward and provided with a second mounting groove (1231). The pressure block (3) includes a main body (31), a first mounting part (32) and a second mounting part (33). The first mounting part (32) is connected to one end of the main body (31) and embedded in the first mounting groove (1211). The second mounting groove (1231) is connected to one end of the main body (31) away from the first mounting part (32) and embedded in the second mounting groove (1231).

6. The overflow structure according to claim 5, characterized in that, The first mounting part (32) has a first limiting protrusion (321) at one end away from the main body part (31), and the second mounting part (33) has a second limiting protrusion (331) at one end away from the main body part (31); The side wall of the first mounting groove (1211) is provided with a first limiting groove (12111) for the first limiting protrusion (321) to be inserted, and the side wall of the second mounting groove (1231) is provided with a second limiting groove (12311) for the second limiting protrusion (331) to be inserted.

7. The overflow structure according to any one of claims 2-6, characterized in that, The outer wall of the overflow section (12) is provided with a first water-sealing groove (124), and the inner wall of the overflow channel (20) is provided with a first water-sealing protrusion (21) that fits into the first water-sealing groove (124).

8. The overflow structure according to any one of claims 2-6, characterized in that, The inner wall of the overflow channel (20) is provided with a second water-sealing groove (22), and the outer wall of the overflow part (12) is provided with a second water-sealing protrusion (125) that fits into the second water-sealing groove (22).

9. The overflow structure according to claim 1, characterized in that, The elastic overflow sleeve (2) is made of rubber.

10. A toilet, characterized in that, Including the overflow structure according to any one of claims 1-9.

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