Offset adapter and toilet

Abstract

An offset adapter, comprising an offset adapter upper body (10), an offset adapter lower body (20), and a limiting structure (50), wherein the offset adapter lower body (20) and the offset adapter upper body (10) are in insertion fit and jointly form a sewage discharge flow channel (30) having an adjustable length; the limiting structure (50) comprises a limiting elastic piece (501) and a limiting protrusion (502), one of the limiting elastic piece (501) and the limiting protrusion (502) being arranged on the offset adapter upper body (10), and the other being arranged on the offset adapter lower body (20); and the limiting elastic piece (501) abuts against the limiting protrusion (502) so as to limit the offset adapter upper body (10) from disengaging from the offset adapter lower body (20).

Description

offset device and toilet

[0001] This application claims priority to Chinese patent application No. 202422618698.5, filed on October 29, 2024, entitled "Drifter and Toilet", the contents of which are to be understood as incorporated herein by reference. Technical Field

[0002] This article relates to, but is not limited to, the field of toilet technology, and in particular to a displacement device and a toilet. Background Technology

[0003] Currently, the length of commonly used toilet offset adapters on the market is not adjustable, resulting in poor compatibility between the adapter and the toilet. Users often encounter installation problems after purchasing the adapter. In some cases, the adapter needs to be cut on-site to fit the toilet, which increases the workload of on-site installation and introduces uncertainty into the on-site operation. Summary of the Invention

[0004] The following is an overview of the subject matter described in detail herein. This overview is not intended to limit the scope of the claims.

[0005] On the one hand, this application provides a shifter, including an upper body of the shifter, a lower body of the shifter, and a limiting structure, wherein the lower body of the shifter and the upper body of the shifter are inserted and cooperate to jointly enclose a sewage discharge channel with adjustable length;

[0006] The limiting structure includes a limiting spring and a limiting protrusion. One of the limiting spring and the limiting protrusion is disposed on the upper body of the shifter, and the other is disposed on the lower body of the shifter. The limiting spring and the limiting protrusion abut against each other to prevent the upper body of the shifter from disengaging from the lower body of the shifter.

[0007] In some exemplary embodiments, the shifter has a plug-in interface, the limiting protrusion and the plug-in interface are located on the upper body of the shifter or on the lower body of the shifter; the limiting protrusion has a first limiting surface, and the first limiting surface and the plug-in interface have a minimum distance along the length direction of the sewage flow channel, and the minimum distance is greater than zero, so as to limit the minimum insertion length between the upper body of the shifter and the lower body of the shifter.

[0008] In some exemplary embodiments, the limiting protrusion is in the shape of a U-shaped groove, the opening of the U-shaped groove faces the insertion interface, and the first limiting surface is located at the bottom of the U-shaped groove.

[0009] In some exemplary embodiments, the limiting protrusion has a first limiting surface, and the first limiting surface is located on the side of the limiting protrusion away from the insertion interface. The limiting spring has a second limiting surface, one of the second limiting surface and the first limiting surface being a concave arc surface and the other being a convex arc surface. The second limiting surface is fitted with the first limiting surface so that the limiting spring and the limiting protrusion abut against each other.

[0010] In some exemplary embodiments, the limiting spring and the limiting protrusion are located outside the sewage discharge channel.

[0011] In some exemplary embodiments, the shifter further includes a sliding connection structure, through which the lower body of the shifter and the upper body of the shifter are slidably connected.

[0012] In some exemplary embodiments, the sliding connection structure includes a matching slide rail and a slide groove, and a portion of the slide rail is slidably embedded in the slide groove; one of the slide rail and the slide groove is disposed on the upper body of the shifter, and the other is disposed on the lower body of the shifter.

[0013] In some exemplary embodiments, one of the limiting spring and the limiting protrusion is disposed on the slide rail, and the other is disposed on the slide groove.

[0014] In some exemplary embodiments, one of the limiting spring and the limiting protrusion is integrally formed with the slide rail, and the other is integrally formed with the slide groove.

[0015] In some exemplary embodiments, the limiting structure further includes a limiting stop bar, which is disposed on the side of the chute away from the sewage discharge channel; the limiting stop bar abuts against the slide rail to restrict the slide rail from dislodging from the chute in a direction perpendicular to the extension direction of the chute.

[0016] In some exemplary embodiments, the shifter further includes at least one sealing ring; the outer wall of the inner side of the section where the lower body of the shifter and the upper body of the shifter are inserted and mated is provided with a plurality of limiting ribs, and a sealing groove is formed between two adjacent limiting ribs, and the sealing ring is embedded in the sealing groove.

[0017] On the other hand, this application provides a toilet, including a toilet body and a displacement device as described in any of the above embodiments; wherein the inlet of the displacement device is connected to the drain outlet of the toilet body.

[0018] After reading and understanding the accompanying diagrams and detailed descriptions, the other aspects can be understood.

[0019] Overview of the attached figures

[0020] The accompanying drawings are used to provide an understanding of the technical solutions herein and form part of the specification. They are used together with the embodiments of this application to explain the technical solutions herein and do not constitute a limitation on the technical solutions herein.

[0021] Figure 1 is an isometric view of the shifter according to an embodiment of this application;

[0022] Figure 2 is an exploded view of the shifter according to an embodiment of this application;

[0023] Figure 3 is a schematic diagram of the shifter assembly process according to an embodiment of this application;

[0024] Figure 4 is a magnified view of part A in Figure 3;

[0025] Figure 5 is a magnified view of the part marked B in Figure 3;

[0026] Figure 6 is a top cross-sectional view of the shifter according to an embodiment of this application;

[0027] Figure 7 is a front cross-sectional view of the shifter in one usage length according to an embodiment of this application;

[0028] Figure 8 is a front sectional view of the shifter in another usage length according to an embodiment of this application.

[0029] Detailed Explanation

[0030] The embodiments described below will be illustrated with reference to the accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined arbitrarily.

[0031] In the description herein, it should be noted that the terms "upper", "lower", "one side", "the other side", "one end", "the other end", "side", "opposite", "four corners", "periphery", "'mouth' structure", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this article and simplifying the description, and do not indicate or imply that the structure referred to has a specific orientation, or is constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this article.

[0032] In the description of the embodiments of this application, unless otherwise expressly specified and limited, the terms "connection," "direct connection," "indirect connection," "fixed connection," "installation," and "assembly" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. The terms "installation," "connection," and "fixed connection" can refer to a direct connection or an indirect connection through an intermediate medium, or they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this document based on the specific circumstances.

[0033] As shown in Figures 1 to 8, this application embodiment provides a displacement device with an adjustable length. The displacement device includes an upper body 10 and a lower body 20. The upper body 10 is provided with an inlet 101 for sewage to flow in. In actual use, the inlet 101 is connected to the drain outlet on the toilet body. Sewage enters the sewage flow channel 30 of the displacement device through the inlet 101 and is discharged through the outlet 201 provided on the lower body 20. The lower body 20 and the upper body 10 can be inserted and fitted together to form an adjustable sewage flow channel 30. As shown in Figures 2 to 6, the displacement device may also include a limiting structure 50, which can limit the adjustment of the length of the sewage flow channel 30, ensuring the reliability of the displacement device length adjustment.

[0034] In some exemplary embodiments, the limiting structure 50 may include a limiting spring 501 and a limiting protrusion 502, one of which is disposed on the upper body 10 of the shifter, and the other is disposed on the lower body 20 of the shifter. The limiting spring 501 and the limiting protrusion 502 abut against each other to prevent the upper body 10 of the shifter from disengaging from the lower body 20 of the shifter. During the insertion process of the upper body 10 of the shifter and the lower body 20 of the shifter, the limiting spring 501 is deformed towards the outside of the sewage discharge channel 30 after being squeezed by the limiting protrusion 502. After the limiting spring 501 passes the limiting protrusion 502, the limiting spring 501 returns to its initial state under the action of its own elastic force. After the upper body 10 and lower body 20 of the shifter are assembled, as shown in Figure 6, the limiting protrusion 502 can prevent the upper body 10 of the shifter from coming off the lower body 20 along the length direction of the sewage discharge channel 30, that is, the right side shown in Figure 6. The limiting spring 501 and the limiting protrusion 502 cooperate with each other to limit the upper body 10 of the shifter to the lower body 20, thus preventing the two from separating.

[0035] In some exemplary embodiments, the limiting spring 501 and the limiting protrusion 502 are located outside the sewage flow channel 30, which can avoid the limiting structure from occupying the sewage flow channel, avoid blind assembly, improve assembly efficiency, and prevent dirt from contaminating the limiting spring and the limiting protrusion, so as not to affect the reliability of the limiting fit between the limiting spring and the limiting protrusion.

[0036] In some exemplary embodiments, the shifter may further include a sliding connection structure 40. The upper body 10 and the lower body 20 of the shifter are slidably connected by the sliding connection structure 40, and together enclose a sewage discharge channel 30. By adjusting the sliding connection structure 40, the length of the sewage discharge channel 30 can be adjusted. The upper body 10 and the lower body 20 of the shifter adopt a sliding engagement method, which can obtain a sewage discharge channel 30 with an adjustable length, thus realizing the length adjustment of the shifter and also obtaining a better adjustment feel.

[0037] As shown in Figures 2, 3, and 6, the sliding connection structure 40 may include a cooperating slide rail 401 and a slide groove 402. The slide rail 401 can be disposed on the upper body 10 of the shifter, and the slide groove 402 on the lower body 20 of the shifter. Alternatively, the slide rail 401 can be disposed on the lower body 20 of the shifter, and the slide groove 402 on the upper body 10 of the shifter. In the embodiments of this application, the technical solution is described using the example of the slide rail 401 being disposed on the upper body 10 of the shifter and the slide groove 402 being disposed on the lower body 20 of the shifter. The slide groove 402 can be integrally formed with the lower body 20 of the shifter, for example, using injection molding. Designing the slide groove and the lower body of the shifter as an integrally formed structure can simplify the assembly process of the shifter and improve the assembly efficiency of the shifter.

[0038] In some exemplary embodiments, as shown in Figures 3 and 4, one of the limiting spring 501 and the limiting protrusion 502 may be provided on the slide rail 401, and the other may be provided on the slide groove 402. For example, the limiting spring 501 may be provided at the end of the slide rail 401 away from the inlet 101; for example, the limiting spring 501 may be integrally formed with the slide rail 401. The limiting spring 501 may include a first end 501b and a second end 501c connected together, with the second end 501c located between the first end 501b and the inlet 101. The first end 501b may be connected to the slide rail 401, and the second end 501c may be a free end. During the insertion process of the upper body 10 and the lower body 20 of the shifter, the second end 501c is deformed towards the outside of the sewage discharge channel 30 after being squeezed by the limiting protrusion 502. After the second end 501c passes the limiting protrusion 502, the second end 501c returns to its initial state under the action of its own elastic force.

[0039] As shown in Figures 3 and 5, the limiting protrusion 502 can be disposed in the slide groove 402. For example, the limiting protrusion 502 can be integrally formed with the slide groove 402. The limiting protrusion 502 can be disposed at the end of the slide groove 402 away from the outlet 201. Integrating the limiting structure and the sliding connection structure into a single design allows for a more compact layout of the shifter, enables a concealed design of the limiting structure, and improves the aesthetics of the appearance. Disposing the limiting spring on the slide rail and the limiting protrusion on the slide groove reduces the complexity of the mold and lowers manufacturing costs.

[0040] As shown in Figure 3, during the assembly of the shifter, the slide rail 401, together with the limiting spring piece 501, is installed on the upper body 10 of the shifter to form the upper body assembly. The slide groove 402, together with the limiting protrusion 502, is integrally formed with the lower body 20 of the shifter to form the lower body assembly. During the insertion process of the upper body assembly and the lower body assembly, the limiting spring piece 501 is deformed towards the outside of the sewage flow channel 30 after being squeezed by the limiting protrusion 502. After the limiting spring piece 501 passes the limiting protrusion 502, it returns to its initial state under the action of its own elastic force. After the upper body assembly and the lower body assembly of the shifter are assembled, as shown in Figure 6, the limiting protrusion 502 can prevent the slide rail 401 from dislodging from the slide groove 402 along the direction of the slide groove 402, which is the right side shown in Figure 6. The limiting spring 501 and the limiting protrusion 502 work together to limit the upper body 10 of the shifter to the lower body 20 of the shifter, thus preventing the two from separating.

[0041] In some exemplary embodiments, as shown in Figures 2 and 3, the limiting protrusion 502 can be U-shaped, with the opening of the U-shaped groove facing one side of the upper body 10 of the shifter. The limiting protrusion 502 has a first limiting surface 502a, which can be a raised arc surface located at the bottom of the U-shaped groove. The limiting spring piece 501 can be rectangular, and it has a second limiting surface 501a located at the second end 501c. The second limiting surface 501a can be a concave arc surface. The second limiting surface 501a and the first limiting surface 502a fit together, allowing the limiting spring piece 501 to be in abutment with the limiting protrusion 502. Both the second limiting surface 501a and the first limiting surface 502a are curved surfaces. Without increasing the size of the limiting protrusion and the limiting spring, the mating area of ​​the first limiting surface and the second limiting surface can be increased, thus ensuring the reliability of the limiting.

[0042] In some exemplary embodiments, after the upper body 10 and the lower body 20 of the shifter are assembled in place, they are plugged into each other. As shown in Figures 2 and 3, the shifter may have a plug-in interface 20a, and the first limiting surface 502a is located on the side of the limiting protrusion 502 away from the plug-in interface 20a. The first limiting surface 502a and the plug-in interface 20a have a minimum distance L along the length direction of the sewage flow channel 30, and the minimum distance L is greater than zero. For example, the plug-in interface 20a and the first limiting surface 502a may be located together on the lower body 20 of the shifter. Alternatively, the plug-in interface 20a and the first limiting surface 502a may be located together on the upper body 10 of the shifter. This minimum distance L can be used to define the minimum plug-in length of the upper body and the lower body of the shifter, and it is convenient to set a sealing structure at the plug-in position of the upper body and the lower body of the shifter, which can ensure that the sewage flow channel obtains good sealing performance. For example, the sealing structure can be a sealing strip, etc. Designing the limiting protrusion 502 as a U-shaped groove, and placing the first limiting surface 502a at the bottom of the U-shaped groove, ensures both the minimum spacing L and high structural strength of the limiting protrusion 502. Furthermore, during assembly, the limiting spring 501 only undergoes elastic deformation when passing the bottom of the U-shaped groove. This shortens the time the limiting spring 501 remains in an elastic deformation state during assembly, extending its service life and ensuring its reliability.

[0043] In some exemplary embodiments, as shown in Figures 2, 3, and 6, the limiting structure 50 may further include a limiting stop 503. The limiting stop 503 may be disposed on the side of the slide 402 away from the sewage discharge channel 30. For example, the limiting stop 503 may be integrally formed with the slide 402. The limiting stop 503 extends along the vertical direction of the shifter and is used to abut against the slide rail 401, thereby restricting the slide rail 401 from disengaging from the slide 402 in a direction perpendicular to the extension of the slide 402.

[0044] In some exemplary embodiments, as shown in Figures 2, 3, and 6, the slide rail 401 and the slide groove 402 are arranged on the outside of the sewage discharge channel 30. This arrangement facilitates installation and avoids blind installation. On the other hand, it avoids the sliding connection structure 40 occupying the space inside the sewage discharge channel 30, so as not to affect the sewage discharge performance of the shifter.

[0045] In some exemplary embodiments, as shown in FIG2, a connecting hole 403 is provided at one end of the slide rail 401. The connecting hole 403 is used to install the slide rail 401, which can be installed using fasteners, such as screws, to achieve detachable assembly of the slide rail 401 and the upper body 10 of the shifter. Multiple connecting holes 403 can be provided to ensure the secure installation of the slide rail 401. The other end of the slide rail 401 can be embedded in the slide groove 402, and the slide rail 401 can slide back and forth along the extension direction of the slide groove 402, i.e., the left and right direction as shown in FIG2. A mounting groove 102 can be provided on the upper body 10 of the shifter, which can be located below the inlet 101. A connecting post 103 can be provided in the mounting groove 102. The connecting post 103 is arranged in a group with the connecting hole 403. The connecting post 103 is used to connect fasteners, which can achieve detachable assembly of the slide rail 401 and the upper body 10 of the shifter. The design of the connecting column 103 avoids adverse effects on the sewage discharge channel 30 during installation, ensuring a high level of sealing for the sewage discharge channel 30. As shown in Figures 2 and 3, the end of the slide rail 401 with the connecting hole 403 can be designated as the fixed end, and the end of the slide rail 401 that slides into the groove 402 can be designated as the free end. The fixed end of the slide rail 401 is fixed to the upper body 10 of the shifter.

[0046] In some exemplary embodiments, as shown in FIG2, the slide rail 401 may be provided with a plurality of sliding protrusions 404. The plurality of sliding protrusions 404 may be located on the side of the slide rail 401 in the vertical direction, and the plurality of sliding protrusions 404 may be spaced apart along the sliding direction of the slide rail 401. For example, the slide rail 401 and the plurality of sliding protrusions 404 may be integrally formed. The sliding protrusions 404 contact and cooperate with the groove wall of the slide groove 402, which can reduce the contact area between the slide rail 401 and the slide groove 402, and improve the sliding operation performance of the sliding connection structure.

[0047] In some exemplary embodiments, as shown in Figures 2 and 7, the upper body 10 of the shifter may include a first flow channel portion 104 and an inlet portion 105. The first flow channel portion 104 and the inlet portion 105 may be integrally formed. An inlet 101 is disposed on the inlet portion 105. A first flow channel 301 communicating with the inlet 101 is provided on the first flow channel portion 104. The lower body 20 of the shifter may include a second flow channel portion 202 and an outlet portion 203. An outlet 201 is disposed on the outlet portion 203, and a second flow channel 302 communicating with the outlet 201 is provided on the second flow channel portion 202. The inlet 101 and the outlet 201 may be circular. The first flow channel portion 104 and the second flow channel portion 202 are inserted into each other, so that the second flow channel 302 and the first flow channel 301 together enclose a sewage discharge channel 30. Along the direction of sewage discharge, the first flow channel 104 can be inserted into the second flow channel 202, which can prevent sewage from flowing into the joint gap between the two to avoid leakage and improve the sealing reliability of the joint area. A sealing structure can be provided in the area where the first flow channel 104 is inserted into the second flow channel 202.

[0048] In some exemplary embodiments, as shown in FIG3, the upper body 10 of the shifter may further include a support portion 106. The support portion 106 is located below the inlet 101 and is connected to the first flow channel portion 104 and the inlet portion 105. The support portion 106 is configured to abut against the ground, which can increase the overall support of the shifter and improve the stability of the support. As shown in FIG2, the support portion 106 may be configured as an arc-shaped plate, the inlet portion 105 may be configured as a downwardly extending annular body, and the support portion 106 may be coaxially arranged with the central axis of the inlet portion 105.

[0049] In some exemplary embodiments, as shown in Figures 2, 7, and 8, the shifter may further include a sealing structure 60, which may include at least one sealing ring 601. The sealing ring 601 may be made of polyurethane foam or rubber, etc. The sealing ring 601 may be bonded to the first flow channel portion 104 or the second flow channel portion 202, and may be arranged in an annular shape.

[0050] Multiple limiting ribs 504 may be provided on the outer wall of the first flow channel 104 and the second flow channel 202 located on the inner side of the insertion. The limiting ribs 504 are arranged in a ring along the circumference of the first flow channel 104 or the second flow channel 202. A sealing groove is formed between two adjacent limiting ribs 504 along the length of the sewage discharge channel 30. The sealing ring 601 can be embedded in the sealing groove and can be fixed by bonding or pressing. In the embodiments of this application, the technical solution is described by taking the insertion of the first flow channel 104 into the second flow channel 202 as an example and the setting of the limiting ribs 504 on the outer wall of the first flow channel 104 as an example. Multiple supporting ribs 505 may also be provided on the outer wall of the first flow channel 104 at intervals along the circumference. One end of the supporting rib 505 is connected to the limiting rib 504 and extends along the insertion direction of the first flow channel 104 and the second flow channel 202. The side of the support rib 505 away from the outer wall of the first flow channel 104 contacts the inner wall of the second flow channel 202. By utilizing multiple support ribs 505, the contact area between the first flow channel 104 and the second flow channel 202 can be reduced, thereby reducing the sliding resistance between them and improving the smoothness of sliding. Furthermore, the multiple support ribs 505 also serve a supporting and guiding function, facilitating the sliding adjustment of the upper body 10 and the lower body 20 of the shifter.

[0051] As shown in Figure 7, the sealing ring 601 may include a base 601a and at least one lip 601b. The base 601a may be annular, and the at least one lip 601b may be disposed on the outer side of the annulus. For example, the sealing ring 601 may include a base 601a and two lips 601b, which may be spaced apart along the central axis of the base 601a. ​​In practical applications, the moisture resistance and high-temperature resistance of the sealing ring can be improved by increasing the dimension of the lip along the radial direction of the base, i.e., the height of the lip.

[0052] In some exemplary embodiments, as shown in Figures 7 and 8, the sealing structure 60 may further include a first sealing element 611 and a second sealing element 612. The first sealing element 611 may be disposed at the inlet 101, and the second sealing element 612 may be disposed at the outlet 201. The first sealing element 611 and the second sealing element 612 may be identical, which can reduce the number of parts, avoid misinstallation of the two seals, and improve assembly efficiency. The first sealing element 611 may be a rubber ring and sleeved around the inlet 101 on the inlet portion 105, and the second sealing element 612 may be a rubber ring and sleeved around the outlet 201 on the outlet portion 203. By providing the first sealing element and the second sealing element respectively in the areas where the shifter connects at the top and bottom, the sealing performance of the shifter connection can be ensured, and the performance of the shifter can be improved.

[0053] As shown in Figure 3, during the assembly of the shifter, the upper body assembly and the lower body assembly of the shifter can be assembled separately. The upper body assembly of the shifter includes the upper body 10, slide rail 401, limiting spring 501, sealing ring 601, and first sealing element 611, etc. The lower body assembly of the shifter includes the lower body 20, slide groove 402, limiting protrusion 502, and second sealing element 612, etc. Then, the upper body assembly and the lower body assembly of the shifter are assembled by the insertion and sliding cooperation of slide rail 401 and slide groove 402, thus completing the overall assembly of the shifter.

[0054] In some exemplary embodiments, as shown in FIG2, one of the upper body 10 and the lower body 20 of the shifter may be provided with a mark 70 for identifying the length of the shifter in use. As shown in FIG2, the mark 70 may be provided on the outlet 203. In this embodiment, the shifter is provided with two lengths of use as an example. FIG7 and FIG8 are cross-sectional schematic diagrams of the shifter at two lengths of use, respectively. Depending on the actual situation, the length of use of the shifter may be set to more. The form of the mark 70 may be set as shown in FIG2. By using the mark, the various lengths of use of the shifter can be identified, which can prompt the user that the shifter has an adjustable function, and make it convenient for the user to select the appropriate length of the shifter.

[0055] In another embodiment of this application, a toilet is provided. The toilet includes a toilet body and a displacement device as described in any of the above embodiments. The inlet 101 communicates with a drain outlet provided on the toilet body. The toilet includes the displacement device as described in any of the above embodiments, and therefore possesses all the aforementioned beneficial effects, which will not be elaborated further here.

[0056] While the embodiments disclosed in this invention have been described above, the content is merely for the purpose of facilitating understanding of the invention and is not intended to limit the invention. It should be noted that the above embodiments or implementation methods are merely exemplary and not restrictive. Therefore, this disclosure is not limited to the content specifically shown and described herein. Various modifications, substitutions, or omissions can be made to the form and details of the implementation without departing from the scope of this disclosure.

Claims

1. A shifter, comprising an upper body of the shifter, a lower body of the shifter, and a limiting structure, wherein the lower body of the shifter is inserted into and cooperates with the upper body of the shifter to jointly enclose a sewage discharge channel with an adjustable length; The limiting structure includes a limiting spring and a limiting protrusion. One of the limiting spring and the limiting protrusion is disposed on the upper body of the shifter, and the other is disposed on the lower body of the shifter. The limiting spring and the limiting protrusion abut against each other to prevent the upper body of the shifter from disengaging from the lower body of the shifter.

2. The shifter as claimed in claim 1, wherein, The shifter has a plug-in interface, and the limiting protrusion and the plug-in interface are located on the upper body of the shifter or on the lower body of the shifter; the limiting protrusion has a first limiting surface, and the first limiting surface and the plug-in interface have a minimum distance along the length direction of the sewage flow channel, and the minimum distance is greater than zero, so as to limit the minimum plug-in length between the upper body of the shifter and the lower body of the shifter.

3. The shifter as described in claim 2, wherein, The limiting protrusion is U-shaped, with the opening of the U-shaped groove facing the insertion interface, and the first limiting surface is located at the bottom of the U-shaped groove.

4. The shifter as claimed in claim 2, wherein, The limiting protrusion has a first limiting surface, and the first limiting surface is located on the side of the limiting protrusion away from the insertion interface. The limiting spring has a second limiting surface, one of the second limiting surface and the first limiting surface is a concave arc surface, and the other is a convex arc surface. The second limiting surface fits against the first limiting surface so that the limiting spring and the limiting protrusion abut against each other.

5. The shifter as claimed in claim 1, wherein, The limiting spring and the limiting protrusion are located on the outside of the sewage discharge channel.

6. The shifter according to any one of claims 1 to 5, further comprising a sliding connection structure, wherein the lower body of the shifter and the upper body of the shifter are slidably connected through the sliding connection structure.

7. The shifter as claimed in claim 6, wherein, The sliding connection structure includes a matching slide rail and a slide groove, and a portion of the slide rail is slidably embedded in the slide groove; one of the slide rail and the slide groove is located on the upper body of the shifter, and the other is located on the lower body of the shifter.

8. The shifter as claimed in claim 7, wherein, One of the limiting spring and the limiting protrusion is provided on the slide rail, and the other is provided on the slide groove.

9. The shifter as claimed in claim 8, wherein, One of the limiting spring and the limiting protrusion is integrally formed with the slide rail, and the other is integrally formed with the slide groove.

10. The shifter as claimed in claim 7, wherein, The limiting structure further includes a limiting stop bar, which is located on the side of the chute away from the sewage discharge channel; the limiting stop bar abuts against the slide rail to restrict the slide rail from dislodging from the chute in a direction perpendicular to the extension direction of the chute.

11. The shifter according to any one of claims 1 to 5, further comprising at least one sealing ring; the outer wall of the inner side of the section where the lower body of the shifter and the upper body of the shifter are inserted and mated is provided with a plurality of limiting ribs, a sealing groove is formed between two adjacent limiting ribs, and the sealing ring is embedded in the sealing groove.

12. A toilet, comprising a toilet body and a shifter as described in any one of claims 1 to 11; wherein, The inlet on the main body of the shifter is connected to the drain outlet on the main body of the toilet.

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