Shifter and toilet

The shifter's adjustable design with a sliding connection structure and integrated seals addresses installation issues and enhances compatibility and sealing, ensuring efficient waste discharge.

JP7866073B2Active Publication Date: 2026-05-26チュワンチョウ コモー インテリジェント キッチン アンド バス カンパニーリミテッド
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Patent Information

Authority / Receiving Office
JP · JP
Patent Type
Patents
Current Assignee / Owner
チュワンチョウ コモー インテリジェント キッチン アンド バス カンパニーリミテッド
Filing Date
2022-12-09
Publication Date
2026-05-26

AI Technical Summary

Technical Problem

Commercially available shifters for toilets are non-adjustable in length and lack compatibility with toilets, often requiring cutting to fit, leading to installation issues.

Method used

A shifter with an upper and lower body connected by a sliding connection structure, allowing adjustable length, featuring a sliding rail and slot for easy assembly and sealing, and integrated seals to ensure compatibility and efficient waste discharge.

Benefits of technology

Enables adjustable length adjustment with improved compatibility and sealing performance, facilitating easy installation and efficient waste discharge without affecting channel functionality.

✦ Generated by Eureka AI based on patent content.

Smart Images

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Patent Text Reader

Abstract

The sifter and toilet include a sifter upper body 10 having an inlet 101 for waste to flow in, and a sifter lower body 20 having an outlet 201 for waste to flow out. The sifter lower body 20 is connected to the sifter upper body 10 by a sliding connection structure 40 and is enclosed together with the sifter upper body 10 to create a waste discharge flow path whose length is adjustable, and the waste discharge flow path connects the inlet 101 and the outlet 201.
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Description

Technical Field

[0001] This article relates to the field of toilet technology, but is not limited thereto, and particularly relates to a shifter and a toilet.

Background Art

[0002] Currently, commercially available or publicly disclosed shifters related to toilets usually cannot adjust their length, have poor compatibility with toilets, and often cannot be installed even if purchased by users. They can only be used after cutting the length of the shifter.

Summary of the Invention

[0003] The following is an overview of the themes described in detail in this article. This overview is not intended to limit the scope of protection of the claims.

[0004] Embodiments of the present disclosure provide a shifter, comprising an upper shifter body provided with an inlet for sewage inflow, and a lower shifter body provided with an outlet for sewage outflow. The lower shifter body is connected to the upper shifter body by a sliding connection structure, and together with the upper shifter body, encloses to create a sewage discharge channel with adjustable length, and the sewage discharge channel communicates the inlet and the outlet.

[0005] Embodiments of the present disclosure provide a toilet, comprising a toilet body and a shifter according to any of the above embodiments, and the inlet communicates with the sewage discharge outlet installed in the toilet body.

[0006] After reading and understanding the attached drawings and detailed description, other aspects can be understood.

Brief Description of the Drawings

[0007] The drawings are for better understanding of the technical solutions of the present disclosure, and constitute a part of the specification. They are used together with the embodiments of the present application to explain the technical solutions of the present disclosure, and are not intended to limit the technical solutions of the present disclosure. [Figure 1]This is a schematic front view of a shifter according to several exemplary embodiments of the present invention. [Figure 2] This is a schematic plan view of a shifter according to several exemplary embodiments of the present application. [Figure 3] These are schematic axial diagrams of a shifter according to several exemplary embodiments of the present invention. [Figure 4] This is an exploded schematic diagram of a shifter according to several exemplary embodiments of the present invention. [Figure 5] This is a schematic diagram of the assembly process of a shifter according to several exemplary embodiments of the present invention. [Figure 6] These are schematic plan cross-sectional views of a shifter according to several exemplary embodiments of the present invention. [Figure 7] This is a schematic front cross-sectional view of a shifter according to several exemplary embodiments of the present application, when it is at one working length. [Figure 8] This is a schematic front cross-sectional view of a shifter according to several exemplary embodiments of the present application, when it is at another working length. [Modes for carrying out the invention]

[0008] The technical proposal of this disclosure will be further described below with reference to the drawings, by means of embodiments. To ensure that it is understood that the embodiments described herein are for illustrative purposes only and do not limit the disclosure.

[0009] In one embodiment of the present invention, a shifter is provided as shown in Figures 1 to 8. The shifter has a length-adjustable function. The shifter comprises an upper shifter body 10 and a lower shifter body 20. The upper shifter body 10 is provided with an inlet 101 for waste to flow in. In actual use, the inlet 101 may communicate with a waste discharge port installed in the toilet body, and the waste enters the waste discharge channel 30 of the shifter via the inlet 101 and is discharged via an outlet 201 installed in the lower shifter body 20. Both the upper shifter body 10 and the lower shifter body 20 may be connected to each other by a sliding connection structure 40, and together they enclose and create the waste discharge channel 30. By adjusting the sliding connection structure 40, the length of the waste discharge channel 30 can be adjusted. The sliding fitting method between the upper shifter body 10 and the lower shifter body 20 provides an adjustable waste discharge channel 30, enabling adjustable shifter length, and the adjustment operation feels relatively good.

[0010] In some exemplary embodiments, as shown in Figures 4 and 5, the sliding connection structure 40 comprises a sliding rail 401 and a sliding slot 402 that cooperate with each other. The sliding rail 401 may be installed on the shifter upper body 10, and the sliding slot 402 may be installed on the shifter lower body 20. Alternatively, the sliding rail 401 may be installed on the shifter lower body 20 and the sliding slot 402 may be installed on the shifter upper body 10. In the embodiments of this application, the technical invention will be described using as an example the case in which the sliding rail 401 is installed on the shifter upper body 10 and the sliding slot 402 is installed on the shifter lower body 20. The sliding slot 402 may be molded integrally with the shifter lower body 20, and the process for integral molding is, for example, an injection molding process.

[0011] In some exemplary embodiments, as shown in Figures 4 and 5, the sliding rail 401 and sliding slot 402 may be installed outside the waste discharge channel 30. In such an installation, both the sliding rail 401 and sliding slot 402 can be easily attached, blind installation can be avoided, and the occupancy of the space inside the waste discharge channel 30 by the sliding connection structure 40 can be avoided so as not to affect the waste discharge function of the shifter.

[0012] In some exemplary embodiments, as shown in Figure 4, a connecting hole 403 is provided at one end of the sliding rail 401, and the connecting hole 403 is used to attach the sliding rail 401, which may be attached using a fastening member, such as a screw, thereby enabling a detachable assembly between the sliding rail 401 and the shifter upper body 10. Multiple connecting holes 403 may be provided, thereby ensuring the robustness of the attachment of the sliding rail 401. As shown in Figure 4, a position limiting slot 102 may be provided in the shifter upper body 10, thereby enabling the sliding rail 401 to be accurately attached to the shifter upper body 10. The other end of the sliding rail 401 can be fitted into the sliding slot 402 and can reciprocate along the extending direction of the sliding slot 402, that is, it can reciprocate along the left-right direction shown in Figure 1. In the actual assembly process of the shifter, the sliding rail 401 and the sliding slot 402 are first assembled, and then the sliding slot 402 and the assembled sliding rail 401 are detachably fixed to the upper body 10 of the shifter. By installing it in this manner, the difficulty of assembling the upper body 10 of the shifter and the lower body 20 of the shifter can be reduced.

[0013] In some exemplary embodiments, as shown in Figure 4, connecting columns 103 are installed on the outer wall of the shifter upper body 10. The connecting columns 103 and connecting holes 403 may be installed as a set, and the connecting columns 103 are used to connect to fastening members, thereby enabling a detachable assembly of the sliding rail 401 and the shifter upper body 10. By utilizing the design structure of the connecting columns 103, unfavorable effects on the waste discharge channel 30 due to the installation operation of the sliding rail 401 and the shifter upper body 10 can be avoided, thereby enabling the waste discharge channel 30 to have high sealing performance.

[0014] In some exemplary embodiments, as shown in Figures 4 and 5, in this embodiment, one end of the sliding rail 401 where the connection hole 403 is installed is referred to as the fixed end, and the other end of the sliding rail 401 that slides into and fits into the sliding slot 402 is referred to as the free end. The fixed end of the sliding rail 401 is fixed to the upper body 10 of the shifter.

[0015] A first position-restricting projection 404 is installed within the sliding slot 402, and a second position-restricting projection 405 is installed on the portion of the sliding rail 401 located within the sliding slot 402. As shown in Figure 6, the first position-restricting projection 404 is installed so as to abut against the second position-restricting projection 405, thereby restricting the sliding rail 401 from moving away from the sliding slot 402 along the extending direction of the sliding slot 402, restricting the position of the shifter upper body 10 to the shifter lower body 20, and preventing the two from separating. By installing the first position-restricting projection 404 within the sliding slot 402 and the second position-restricting projection 405 within the sliding rail 401, the overall design layout of the shifter is more compact, and the external dimensions of the shifter are reduced. The first position limiting projection 404 may be installed in the shape of a U-shaped slot as shown in Figure 4, and the opening of the U-shaped slot may face the shifter upper body 10 side, and the second position limiting projection 405 may be installed in the elongated shape as shown in Figure 4. As shown in Figure 6, the first position limiting projection 404 and the second position limiting projection 405 cooperate, and along the extending direction of the sliding slot 402, the second position limiting projection 405 contacts the surface of the first position limiting projection 404 away from the shifter upper body 10, thereby achieving positional restriction of both the shifter upper body 10 and the shifter lower body 20 along the longitudinal direction of the waste discharge passage 30.

[0016] In some exemplary embodiments, as shown in Figure 5, a clearance gap 406 is left between the first position limiting projection 404 and the side wall of the sliding slot 402. The size of the clearance gap 406 is denoted as L1, and by utilizing the clearance gap 406, the sliding rail 401 can be positioned within the sliding slot 402 in the radial direction (i.e., the horizontal direction perpendicular to the extending direction of the sliding slot 402) and can slide and adjust through the clearance gap 406 without being affected by the first position limiting projection 404, thereby enabling smooth mounting of the sliding rail 401.

[0017] In some exemplary embodiments, as shown in Figure 4, the sliding rail 401 may be provided with a bypass slot 407, which may extend along the length adjustment direction of the shifter. In the shifter product, the first position limiting projection 404 is located within the bypass slot 407, and one end away from the fixed end of the bypass slot 407 is positioned to close, forming a second position limiting projection 405. The sliding slot 402 and the first position limiting projection 404 may be integrally molded by injection molding or the like. The sliding rail 401 and the second position limiting projection 405 may be integrally molded, thereby reducing the assembly process and increasing installation efficiency.

[0018] In some exemplary embodiments, as shown in Figure 5, the contact position between the first position limiting projection 404 and the second position limiting projection 405 is spaced apart from one end of the sliding slot 402 near the fixed end of the sliding rail 401, and this space is denoted as L2. L2 is used to limit the minimum insertion length between the shifter upper body 10 and the shifter lower body 20, thereby facilitating the installation of the seal structure 50, and ensuring that the waste discharge channel 30 achieves relatively good sealing performance. The seal structure 50 may include a seal strip or the like.

[0019] In some exemplary embodiments, as shown in Figures 4 and 5, one end of the sliding slot 402 away from the fixed end of the sliding rail 401 may be installed to be open, thereby allowing the sliding rail 401 to be inserted into the sliding slot 402 along the extending direction of the sliding slot 402 (the left-right direction shown in Figure 1). As shown in Figure 4, the sliding slot 402 is further provided with a third position limiting projection 408. The third position limiting projection 408 extends along the vertical direction of the shifter and is used to abut against the sliding rail 401, thereby limiting the sliding rail 401 from moving away from the sliding slot 402 in a direction perpendicular to the extending direction of the sliding slot 402. The third position limiting projection 408 may be molded integrally with the sliding slot 402.

[0020] In some exemplary embodiments, as shown in FIGS. 4 and 5, a plurality of sliding protrusions 409 are provided along the longitudinal direction of the sliding rail 401, and the sliding protrusions 409 protrude along the vertical direction. In the structure of the shifter, the sliding protrusions 409 and the slot walls of the sliding slots 402 are in contact and fitted along the vertical direction, whereby the contact area between the sliding rail 401 and the sliding slots 402 is reduced. By utilizing the plurality of sliding protrusions 409 provided, it is advantageous to avoid large-area contact between the sliding rail 401 and the sliding slots 402, reduce the sliding resistance between the upper body 10 of the shifter and the lower body 20 of the shifter, and improve the smoothness of the sliding between the two.

[0021] In some exemplary embodiments, as shown in FIGS. 1 and 2, the upper body 10 of the shifter includes a first flow path portion 104 and an inlet portion 105. The first flow path portion 104 and the inlet portion 105 may be integrally formed. The inlet 101 is installed in the inlet portion 105. As shown in FIG. 4, a first flow path 301 communicating with the inlet 101 is installed in the first flow path portion 104.

[0022] As shown in FIGS. 1 and 2, the lower body 20 of the shifter includes a second flow path portion 202 and an outlet portion 203. As shown in FIG. 4, the outlet 201 is installed in the outlet portion 203, and a second flow path 302 communicating with the outlet 201 is installed in the second flow path portion 202. The inlet 101 and the outlet 201 may be configured in a circular shape. Both the first flow path portion 104 and the second flow path portion 202 are inserted and fitted, whereby the second flow path 302 and the first flow path 301 together surround to create a dirt discharge flow path 30. The first flow path portion 104 may be inserted into the second flow path portion 202 along the direction of dirt discharge, whereby it is avoided that dirt flows into the insertion gap between the two, leakage is avoided, and the seal reliability of the insertion region between the two can be enhanced. A seal structure 50 may be installed in the region where the first flow path portion 104 is inserted into the second flow path portion 202.

[0023] In some exemplary embodiments, as shown in FIGS. 4 to 8, the seal structure 50 may include at least one seal ring 501. The seal ring 501 may be made of urethane foam, rubber, or the like. The seal ring 501 may be adhered to the first flow path portion 104 or the second flow path portion 202, or the seal ring 501 may surround the first flow path portion 104 or the second flow path portion 202 to form an annular shape.

[0024] As shown in FIG. 4, a plurality of position-limiting ribs 502 may be provided on one outer wall of the first flow path portion 104 and the second flow path portion 202, which is located inside the insertion. The position-limiting ribs 502 are installed annularly along the circumferential direction of the first flow path portion 104 or the circumferential direction of the second flow path portion 202. A seal groove is formed between two adjacent position-limiting ribs 502 along the longitudinal direction of the dirt discharge flow path 30. The seal ring 501 may be fitted into the seal groove. The seal ring 501 may be fitted into the seal groove by means such as adhesion or crimping, thereby realizing the fixing of the seal ring 501.

[0025] In the embodiments of the present application, taking the insertion of the first flow path portion 104 into the second flow path portion 202 as an example and taking the installation of the position-limiting ribs 502 on the outer wall of the first flow path portion 104 as an example, the technical solution will be described. As shown in FIG. 4, a plurality of support ribs 503 are further provided on the outer wall of the first flow path portion 104, which are installed at intervals along the circumferential direction. One end of the support rib 503 is connected to the position-limiting rib 502 and extends along the insertion direction of the first flow path portion 104 and the second flow path portion 202. The side surface of the support rib 503 away from the outer wall of the first flow path portion 104 contacts the inner wall of the second flow path portion 202. By the plurality of support ribs 503 installed, the contact area between the first flow path portion 104 and the second flow path portion 202 is reduced. Then, the sliding resistance between the first flow path portion 104 and the second flow path portion 202 is reduced, and the smoothness of the sliding is enhanced. In addition, the plurality of support ribs 503 can also play the roles of support and guidance, thereby facilitating the sliding adjustment of both the upper shifter body 10 and the lower shifter body 20.

[0026] In some exemplary embodiments, as shown in Figure 5, the insertion end of the first flow channel 104 may be installed at an angle, with the top of the insertion end of the first flow channel 104 being further from the inlet 101 than the bottom. The insertion end of the second flow channel 202 may also be installed at an angle and is parallel to the insertion end of the first flow channel 104. Both the insertion end of the first flow channel 104 and the insertion end of the second flow channel 202 are installed at an angle, which facilitates the insertion work between the upper body 10 of the shifter and the lower body 20 of the shifter, thereby increasing the overall assembly efficiency of the shifter.

[0027] In some exemplary embodiments, as shown in Figure 5, the upper body 10 of the shifter further includes a support portion 106. The support portion 106 is located below the inlet 101 and is connected to the first flow path portion 104 and the inlet portion 105. The support portion 106 is installed so as to abut the ground, thereby increasing the support capacity of the entire shifter and enhancing the stability of the support. As shown in Figure 5, the support portion 106 may be installed as an arc-shaped plate, the inlet portion 105 may be a downwardly extending annular body, and the support portion 106 may be installed coaxially with the central axis of the inlet portion 105.

[0028] In some exemplary embodiments, as shown in Figure 4, a first seal 504 is installed at the inlet 101 and a second seal 505 is installed at the outlet 201. The first seal 504 may be designed to be identical to the second seal 505, thereby reducing the number of parts, avoiding incorrect installation of the two seals, and improving the efficiency of the assembly work. The first seal 504 may be installed as a rubber ring, thereby fitting around the inlet 101 of the inlet section 105. The first seal 504 and the second seal 505 are installed at the two connection areas, upper and lower, respectively, thereby ensuring the sealing performance of the shifter connection points and improving the operation performance of the shifter.

[0029] In some exemplary embodiments, as shown in Figure 2, a marker 60 is provided on at least one of the shifter upper body 10 and the shifter lower body 20 to indicate the shifter's usable length. For example, the marker 60 may be provided on the outlet portion 203. In this embodiment, the shifter is typically configured with two usable lengths. Figures 7 and 8 are schematic cross-sectional views of the shifter with two usable lengths, respectively, and more usable lengths may be configured depending on the actual situation. The form of the marker 60 may be configured as shown in Figure 2. The configured marker 60 indicates multiple usable lengths of the shifter, thereby indicating to the user that the shifter has an adjustable function and making it easier for the user to select an appropriate shifter length.

[0030] Another embodiment of the present invention provides a toilet. The toilet comprises a toilet body and a sifter as described in any of the above embodiments, wherein the inlet 101 communicates with a waste discharge port installed in the toilet body. Because the toilet is equipped with the sifter as described in any of the above embodiments, it has all the above beneficial effects, which will not be repeated here.

[0031] Furthermore, in this disclosure, directions or positional relationships indicated by terms such as "center," "vertical," "horizontal," "length," "width," "thickness," "top," "bottom," "front," "back," "left," "right," "vertical," "horizontal," "top," "bottom," "inside," "outside," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" are based on the directions or positional relationships shown in the drawings. These are merely for the purpose of explaining and simplifying this disclosure, and do not explicitly or implicitly suggest that the indicated devices or elements necessarily have a specific direction, or are configured and operated in a specific direction, and therefore should not be considered as limitations on this disclosure.

[0032] Furthermore, the designations "First" and "Second" are for descriptive purposes only and should not be understood as expressing or implying relative importance, or implicitly indicating the quantity of the indicated technical feature. Accordingly, the features designated as "First" and "Second" may explicitly or implicitly include at least one such feature. In this disclosure, unless otherwise explicitly stated, "multiple" means at least two, for example, two, three, etc.

[0033] In this disclosure, unless otherwise explicitly stated or limited, the terms “attachment,” “connection,” and “fixing” should be understood in a broad sense, for example, that they may be fixed connections, detachable connections, or integral connections, mechanical connections, electrical connections, direct connections, indirect connections via an intermediate medium, or internal communication or interaction between two elements. A person skilled in the art will be able to understand the meaning of the above terms in this disclosure based on the context.

[0034] In this disclosure, unless otherwise explicitly stated or limited, the statement that a first feature is "above" or "below" a second feature may mean that the first and second features are in direct contact, or that they are indirectly in contact via an intermediate medium. The statement that a first feature is "above" a second feature may mean that the first feature is directly above or diagonally above the second feature, or that the horizontal height of the first feature is greater than that of the second feature. The statement that a first feature is "below" a second feature may mean that the first feature is directly below or diagonally below the second feature, or that the horizontal height of the first feature is lower than that of the second feature.

[0035] In this specification, reference descriptions such as “one example,” “several examples,” “example,” “specific example,” or “several examples” mean that the features, structures, materials, or characteristics described in such example or exemplary are included in at least one example of this disclosure. In this specification, the schematic expressions of the above terms do not necessarily refer to the same example or example. The features, structures, materials, or characteristics described may be combined in an appropriate manner in any one or more examples or examples. Notwithstanding that, a person skilled in the art can combine different examples or examples and features of different examples or examples described in this specification, as long as they do not conflict with each other.

[0036] Although embodiments of the present application have been disclosed and described above, it should be understood that these embodiments are illustrative and should not be construed as limitations to the disclosure, and those skilled in the art can modify, alter, substitute, and transform these embodiments within the scope of the disclosure. [Explanation of symbols]

[0037] 10... Upper body of the shifter, 101... Inlet, 102... Position restriction slot, 103... Connecting column, 104... First flow path section, 105... Inlet section, 106... Support section, 20...Shifter lower body, 201...Outlet, 202...Second flow path section, 203...Outlet section, 30...Waste discharge channel, 301...First channel, 302...Second channel, 40...Sliding connection structure, 401...Sliding rail, 402...Sliding slot, 403...Connection hole, 404...First position limiting projection, 405...Second position limiting projection, 406...Avoidance gap, 407...Avoidance slot, 408...Third position limiting projection, 409...Sliding projection, 50...Seal structure, 501...Seal ring, 502...Position limiting rib, 503...Support rib, 504...First seal, 505...Second seal, 60...Sign.

Claims

1. It is a shifter, The upper body of the shifter is equipped with an inlet for waste to flow in, It comprises a lower shifter body equipped with an outlet for waste to flow out, The lower body of the shifter is connected to the upper body of the shifter by a sliding connection structure, and together with the upper body of the shifter, it creates a waste discharge channel that is adjustable in length, and the waste discharge channel connects the inlet and the outlet. The sliding connection structure comprises a sliding rail and a sliding slot that cooperate with each other, one of the sliding rail and the sliding slot is installed on the upper body of the shifter and the other is installed on the lower body of the shifter, and the sliding rail and the sliding slot are located outside the waste discharge channel. A connecting hole for attaching a fastening member is provided at one end of the sliding rail, and the other end of the sliding rail is fitted into the sliding slot and can slide along the sliding slot. A shifter in which the sliding rail is detachably connected to the upper body of the shifter or the lower body of the shifter via the fastening member.

2. The shifter according to claim 1, wherein a connecting column for connecting to the fastening member is installed on the outer wall of the upper body of the shifter or the outer wall of the lower body of the shifter.

3. One end of the sliding rail is a fixed end, and the other end of the sliding rail is a free end, the fixed end is located outside the sliding slot and connected to the upper body of the shifter or the lower body of the shifter, and the free end is slidably fitted into the sliding slot. A first position limiting projection is provided within the sliding slot, and a second position limiting projection is provided on the portion of the sliding rail located within the sliding slot. The shifter according to claim 1 or 2, wherein the first position limiting projection is positioned to abut against the second position limiting projection, thereby limiting the sliding rail from moving away from the sliding slot along the extending direction of the sliding slot, and positioning the upper shifter body to the lower shifter body.

4. A clearance gap is provided between the first position limiting projection and the side wall of the sliding slot to avoid the sliding rail. The shifter according to claim 3, wherein a bypass slot is provided on the sliding rail, the first position limiting projection is located within the bypass slot, and one end of the bypass slot away from the fixed end is set to close to form the second position limiting projection.

5. The shifter according to claim 3, wherein the contact position between the first position limiting projection and the second position limiting projection is spaced apart from one end of the sliding slot closest to the fixed end, thereby limiting the minimum insertion length between the upper body of the shifter and the lower body of the shifter.

6. The sliding slot is installed so that one end away from the fixed end is open, thereby allowing the sliding rail to be inserted into the sliding slot along the extending direction of the sliding slot. The shifter according to claim 3, wherein a third position limiting projection is further provided on the sliding slot, and the third position limiting projection is used to contact the sliding rail, thereby limiting the sliding rail from moving away from the sliding slot in a direction perpendicular to the extending direction of the sliding slot.

7. A shifter according to claim 1 or 2, wherein a plurality of sliding protrusions are provided on the sliding rail, and the sliding protrusions and the slot walls of the sliding slots are in contact and fitted together, thereby reducing the contact area between the sliding rail and the sliding slots.

8. The upper body of the shifter comprises a first flow channel and an inlet, the inlet is installed in the inlet, and the first flow channel is installed in the first flow channel. The lower body of the shifter comprises a second flow path section and an outlet section, the outlet is installed in the outlet section, and the second flow path is installed in the second flow path section. The first flow channel and the second flow channel are fitted together, thereby enclosing the second flow channel and the first flow channel together to create the waste discharge channel. A sealing structure is further installed between the first flow channel and the second flow channel, and / or The shifter according to claim 1 or 2, wherein a mark indicating the length of use of the shifter is installed on one of the upper body of the shifter and the lower body of the shifter.

9. The aforementioned seal structure comprises at least one seal ring, A shifter according to claim 8, wherein a plurality of position-restricting ribs are provided on the inner outer wall of one of the first and second flow channels, a seal groove is formed between two adjacent position-restricting ribs, and the seal ring is fitted into the seal groove.

10. On the inner outer wall of the first and second flow channels, a plurality of support ribs are further installed at intervals along the circumferential direction. The shifter according to claim 9, wherein the support rib is connected to the position limiting rib and extends along the insertion direction between the first flow channel and the second flow channel, and the inner wall of one of the outermost of the first and second flow channels contacts and fits with the support rib.

11. The insertion end of the first flow channel is installed at an inclination, and the top of the insertion end of the first flow channel is further away from the inlet than the bottom. The shifter according to claim 9, wherein the insertion end of the second flow channel is installed at an inclination and is parallel to the insertion end of the first flow channel.

12. The upper body of the shifter further comprises a support portion, which is located below the inlet, connected to the first flow path portion and the inlet portion, and installed so as to be in contact with the ground, and / or The shifter according to claim 8, wherein a first seal is installed at the inlet and a second seal is installed at the outlet.

13. A toilet comprising a toilet body and a shifter as described in claim 1 or 2, A toilet, wherein the aforementioned entrance is connected to a waste discharge port installed in the toilet body.