DRAIN STRUCTURE AND URINAL

Abstract

A drain structure includes a drain bent pipe configured to drain a urinal trough. The drain bent pipe includes a bent pipe main body; a first bent pipe end connected to a first end of the bent pipe main body; a second bent pipe end connected to a second end of the bent pipe main body; and an internal thread disposed in the first bent pipe end. The drain structure also includes a connecting sleeve configured to connect the urinal trough to the drain bent pipe. The connecting sleeve includes a sleeve main body including an external thread configured to be screwed into the first bent pipe end.

Description

CROSS REFERENCE TO RELATED APPLICATION

This application claims the benefit of priority to: Chinese Patent Application No. 202321349129.4 filed in the Chinese Intellectual Property Office on May 30, 2023, which is hereby incorporated by reference in its entirety.

FIELD

The present disclosure relates to the technical field of the urinal drainage and more particularly relates to a drain structure and a urinal.

BACKGROUND

A urinal can be a wall-mounted urinal or a pedestal urinal, which comprises a urinal main body (a ceramic body). A front side or a face side of the urinal main body is provided with a urinal trough, and the bottom portion of the urinal trough is provided with a drain connector or a drain valve. The rear side or the back side of the urinal main body is provided with a mounting groove. A part of a drain bent pipe is disposed in the mounting groove, the first end of the drain bent pipe is connected to the bottom surface of the urinal trough, and the drain connector or the drain valve is connected to the first end of the drain bent pipe. The second end of the drain bent pipe is configured to be connected to the main drain pipe of a building. After the urinal is used by a user, a spray nozzle at a top portion of the urinal sprays water, and the urine sewage is drained into the drain bent pipe through the drain connector or the drain valve and then drained into the main drain pipe of the building.

The Chinese invention patent with the publication number of CN103711194A discloses an induction type water-saving urinal and a control method thereof, and the induction type water-saving urinal comprises a drain valve assembly and a sink trap. The drain valve assembly comprises a drain valve body, which is a cylinder as a whole, and an outer wall of the drain valve body is provided with an external thread. The drain valve body extends out of a bottom portion of a urinal cavity and is fitted with and connected to the sink trap through a connecting member. Specifically, the drain valve body extends out of the bottom portion of the urinal cavity. A threaded fitting portion is provided on the connecting member at the external thread part corresponding to the drain valve body. The drain valve body is connected to an upper threaded fitting part of the connecting member through the external thread, and a lower threaded fitting part of the connecting member is connected to a thread at a corresponding position of the sink trap, realizing the fitting and the fixation of the drain valve body, the connecting member, and the sink trap.

The above connection manner has the following disadvantages.

• • 1. A connecting member needs to be used to connect the drain valve body to the sink trap. The connecting member needs to be provided with an internal thread to be connected to the drain valve body. The connecting member also needs to be provided with an external thread to be connected with the sink trap. Such a connection manner is complicated.
  • 2. The connecting member is located below the urinal cavity. While mounting a fully enclosed urinal (the expression of “fully enclosed” means that there is no gap at the bottom portion of the mounting groove on the back side of the urinal body), the user can only put his hand from the rear side of the urinal into the space below the urinal cavity and then can rotate the connecting member to connect the drain valve body to the sink trap. Therefore, during the assembling, the sink trap, the drain valve, and the urinal have to be assembled together in advance, and then the second end of the sink trap is connected to the main drain pipe of the building. At this time, the sink trap and the urinal assembled together are relatively heavy. Thus, one person needs to carry the urinal, and another person needs to connect the second end of the sink trap to the main drain pipe of the building. Then, the urinal is mounted on a wall surface. This is extremely inconvenient for mounting and requires a lot of manpower.

SUMMARY

The present disclosure aims to remove the disadvantages in the prior art and to provide a drain structure and a urinal. A sleeve main body of a connecting sleeve is provided with an external thread, an inner surface of the sleeve main body is provided with sleeve wall protrusions and/or sleeve wall grooves. An internal thread is arranged in a first bent pipe end of a drain bent pipe. During the assembling, the sleeve main body directly passes through a sleeve mounting hole of a urinal trough. A wrench tool is cooperated with the sleeve wall protrusions and/or the sleeve wall grooves to rotate the sleeve main body, so that the sleeve main body can be in threaded connection with or screwed into the first bent pipe end of the drain bent pipe. A connecting member is no longer needed. A user can screw the sleeve main body in the urinal trough to connect the sleeve main body to the first bent pipe end. This is convenient for the assembling. While the urinal is mounted, a second bent pipe end of the drain bent pipe is connected to a main drain pipe of a building or an adapter pipe. Then, a urinal main body is mounted on a wall surface. Finally, the sleeve main body is screwed from the urinal trough so as to be connected to the first bent pipe end. This is convenient for the mounting. The urinal can be mounted with an operation of only one person. Thus, the manpower is reduced.

According to an embodiment of the present disclosure, a drain structure includes a drain bent pipe configured to drain a urinal trough and includes a connecting sleeve configured to connect the urinal trough to the drain bent pipe.

The drain bent pipe includes a first bent pipe end, a bent pipe main body, and a second bent pipe end, which are sequentially connected. An internal thread is arranged in the first bent pipe end.

The connecting sleeve includes a sleeve main body provided with an external thread, and an inner surface of the sleeve main body is provided with sleeve wall protrusions and/or sleeve wall grooves for being cooperated with a wrench tool.

A lower end of the sleeve main body is in threaded connection in the first bent pipe end.

In another embodiment, the inner surface of the sleeve main body is provided with two oppositely arranged sleeve wall protrusions and/or sleeve wall grooves.

In another embodiment, the sleeve wall protrusions are integrally formed with the sleeve main body.

In another embodiment, an upper end of the sleeve main body is connected to a sleeve top ring, and a bottom surface of the sleeve top ring is provided with a first sealing ring.

In another embodiment, the bottom surface of the sleeve top ring is provided with a first mounting groove, and the first sealing ring is assembled in the first mounting groove.

In another embodiment, the bottom surface of the sleeve top ring is a conical surface, and a radius of the conical surface is tapered or decreased in a direction from top to bottom (e.g., in a top-to-bottom direction of the sleeve top ring).

In another embodiment, a top portion of the connecting sleeve is detachably connected to a filter cover, which is provided with a plurality of filter cover through holes arranged at intervals or spaced apart from each other.

In another embodiment, a bottom portion of the filter cover is connected with at least two elastic jaws arranged at intervals or spaced apart from each other, and the elastic jaws are clamped with the sleeve main body.

In another embodiment, a top surface of the first bent pipe end is connected to a flexible gasket.

In another embodiment, the top surface of the first bent pipe end is provided with an annular position limiting groove.

A bottom surface of the flexible gasket is provided with a gasket convex ring extending downwardly.

The gasket convex ring is assembled in the annular position limiting groove.

In another embodiment, a top surface of the flexible gasket is provided with a corrugated surface.

In another embodiment, the drain structure includes an adapter pipe connected with the second bent pipe end, and the adapter pipe is firmly connected to the second bent pipe end through a clamp.

In another embodiment, the second bent pipe end is inserted into the adapter pipe.

A second sealing ring is arranged between an outer surface of the second bent pipe end and an inner surface of the adapter pipe.

In another embodiment, the outer surface of the second bent pipe end is provided with a second mounting groove, and the second sealing ring is assembled in the second mounting groove.

According to another embodiment of the present disclosure, a urinal includes a urinal main body and the drain structure according to any one of the foregoing embodiments.

A front side of the urinal main body is provided with the urinal trough, a back side of the urinal main body is provided with a mounting cavity, and a bottom portion of the urinal trough is provided with a sleeve mounting hole.

The drain bent pipe is at least partially located in the mounting cavity, and the first bent pipe end is connected to a bottom portion of the sleeve mounting hole.

The connecting sleeve is hermetically assembled with the sleeve mounting hole, and the sleeve main body passes through the sleeve mounting hole and is in threaded connection with or screwed into the first bent pipe end.

In another embodiment, the upper end of the sleeve main body is provided with the sleeve top ring. The bottom surface of the sleeve top ring is provided with the first sealing ring, and the first sealing ring is sealed or disposed between the sleeve top ring and a hole wall of the sleeve mounting hole.

In another embodiment, the sleeve top ring is assembled in the sleeve mounting hole.

In another embodiment, a top surface of the sleeve top ring is in smooth transition with a top surface of the sleeve mounting hole.

In another embodiment, the bottom surface of the sleeve top ring is a conical surface. Correspondingly, an upper end opening of the sleeve mounting hole is a conical opening, and the sleeve top ring is assembled in the conical opening.

The first sealing ring is sealed or disposed between the conical surface of the sleeve top ring and a surface of the conical opening.

In another embodiment, a bottom surface of the urinal trough is provided with a mounting plane surface, and a lower end opening of the sleeve mounting hole is disposed on the mounting plane surface.

The top surface of the first bent pipe end is connected to the flexible gasket, and the flexible gasket is tightly attached to the mounting plane surface.

By adopting the above technical solutions, the present disclosure has the following beneficial effects.

The present disclosure provides a drain structure and a urinal. The drain structure includes a drain bent pipe and a connecting sleeve. An internal thread is disposed in the first bent pipe end of the drain bent pipe, and the second bent pipe end of the drain bent pipe is configured to be connected to the main drain pipe of a building or an adapter pipe. The sleeve main body of the connecting sleeve is provided with an external thread, and the inner surface of the sleeve main body is provided with the sleeve wall protrusions and/or the sleeve wall grooves, which are configured to be cooperated with a wrench tool to rotate the connecting sleeve.

While a urinal, especially a fully enclosed urinal, is mounted, firstly, the second bent pipe end is connected to the main drain pipe of the building or the adapter pipe. The, the urinal main body is mounted on the wall surface, and the first bent pipe end is placed below the sleeve mounting hole of the urinal trough. The sleeve main body passes through the sleeve mounting hole downwardly. The wrench tool is inserted into the sleeve main body in the urinal trough to rotate the connecting sleeve. The lower end of the sleeve main body is in threaded connection with or screwed into the first bent pipe end, without specially arranging a connecting member for connecting the sleeve main body to the first bent pipe end. Thus, the cost is reduced, and it is convenient for mounting. The urinal can be mounted with an operation of only one person. Thus, the manpower is reduced.

BRIEF DESCRIPTION OF THE FIGURES

With reference to the drawings, the contents disclosed by the present disclosure should be more easily understood. It should be understood that: these drawings are merely used for illustration and are not intended to limit the protection scope of the present disclosure. In the drawings:

FIG. 1 is a perspective view of a drain structure according to an embodiment of the present disclosure;

FIG. 2 is an exploded view of the drain structure according to an embodiment of the present disclosure;

FIG. 3 is a cross-sectional view of the drain structure according to an embodiment of the present disclosure;

FIG. 4 is a perspective view of a drain bent pipe and a connecting sleeve which are assembled together;

FIG. 5 is a perspective view of the connecting sleeve;

FIG. 6 is a cross-sectional view of the connecting sleeve;

FIG. 7 is an exploded view of the drain bent pipe, a flexible gasket, and a second sealing ring;

FIG. 8 is a perspective view of the flexible gasket;

FIG. 9 is a perspective view of a filter cover;

FIG. 10 is a perspective view of a urinal according to an embodiment of the present disclosure from a first visual angle;

FIG. 11 is a perspective view of the urinal according to an embodiment of the present disclosure from a second visual angle;

FIG. 12 is a perspective view of a urinal main body;

FIG. 13 is a cross-sectional view of a urinal according to an embodiment of the present disclosure;

FIG. 14 is an enlarged view of the region A in FIG. 3;

FIG. 15 is an enlarged view of a sleeve mounting hole part of the urinal;

FIG. 16 is a schematic diagram showing a situation that, while mounting the urinal, firstly the drain bent pipe is mounted, and then the urinal main body is mounted; and

FIG. 17 is a schematic diagram showing a situation that, while mounting the urinal, the connecting sleeve and the filter cover are assembled after the urinal main body is mounted.

DETAILED DESCRIPTION

The embodiments of the present disclosure are further described hereinafter with reference to the drawings. The same or equivalent parts are denoted by the same reference numerals. It should be noted that the terms of “front”, “back”, “left”, “right”, “up”, and “down” used in the following description refer to the directions in the drawings, and the terms of “inner” and “outer” refer to the directions toward or away from the geometric centers of specific parts, respectively.

As shown in FIG. 1-FIG. 7 and FIG. 10-FIG. 17, a drain structure according to an embodiment of the present disclosure comprises a drain bent pipe 1 configured to drain sewage from a urinal trough 61 and comprises a connecting sleeve 2 configured to connect the urinal trough 61 to the drain bent pipe 1.

The drain bent pipe 1 comprises a first bent pipe end 12, a bent pipe main body 11, and a second bent pipe end 13, which are sequentially connected. An internal thread 121 is arranged or formed in the first bent pipe end 12.

The connecting sleeve 2 comprises a sleeve main body 21 provided with an external thread 211. An inner surface of the sleeve main body 21 is provided with sleeve wall protrusions 212 and/or sleeve wall grooves for being cooperated with a wrench tool 7.

A lower end of the sleeve main body 21 is in threaded connection in or screwed into the first bent pipe end 12.

The drain structure according to the present disclosure is used in a pedestal or wall-mounted urinal to drain the sewage from the urinal trough 61.

The drain structure comprises the drain bent pipe 1 and the connecting sleeve 2.

The drain bent pipe 1 is a rigid plastic pipe with a U-shaped bent portion, which plays the roles of water storage and deodorization. The drain bent pipe 1 comprises the bent pipe main body 11, the first bent pipe end 12, and the second bent pipe end 13. The first bent pipe end 12 and the second bent pipe end 13 are connected on two opposite ends of the bent pipe main body 11, respectively. The first bent pipe end 12 and the second bent pipe end 13 may be integrally or separately arranged with the bent pipe main body 11. The first bent pipe end 12 is configured to be connected to a bottom portion of a sleeve mounting hole 63 of the urinal trough 61, and the internal thread 121 is arranged or disposed in the first bent pipe end 12. The second bent pipe end 13 is configured to be directly connected to a main drain pipe of a building or connected to the main drain pipe through an adapter pipe 4. The connecting sleeve 2 passes through the sleeve mounting hole 63 to connect the urinal trough 61 to the drain bent pipe 1 so as to drain the sewage from the urinal trough 61 to the drain bent pipe 1.

The connecting sleeve 2 may also be called as a drain pipe head or a drain valve. The connecting sleeve 2 comprises a cylindrical sleeve main body 21, and an outer surface of the sleeve main body 21 is provided with the external thread 211 configured to be engaged with the first bent pipe end 12. The inner surface of the sleeve main body 21 is provided with the sleeve wall protrusions 212 and/or the sleeve wall grooves. The sleeve wall protrusions 212 and/or the sleeve wall grooves extend along an axial direction of the sleeve main body 21. The sleeve wall protrusions 212 and/or the sleeve wall grooves are configured to be cooperated with the wrench tool 7 to screw the connecting sleeve 2, so that the connecting sleeve 2 is connected within the first bent pipe end 12.

As shown in FIG. 16 and FIG. 17, to mount a urinal, especially a fully enclosed urinal, firstly, a user may connect the second bent pipe end 13 to the main drain pipe of the building or connected to the main drain pipe of the building through the adapter pipe 4. Then, the user may mount the urinal main body 6 on a wall surface 8, may place the first bent pipe end 12 below the sleeve mounting hole 63 of the urinal trough 61, and may pass or insert the sleeve main body 21 through the sleeve mounting hole 63 downwardly. In the urinal trough 61, the user may insert the wrench tool 7 into the sleeve main body 21 to be cooperated with the sleeve wall protrusions 212 and/or the sleeve wall grooves. Then, the user may rotate the connecting sleeve 2, may allow the lower end of the sleeve main body 21 to enter the first bent pipe end 12, and may screw the sleeve main body 21 into the first bent pipe end 12. While screwing the sleeve main body 21, the user may fix the first bent pipe end 12 at a bottom portion of the sleeve mounting hole 63. While mounting the first bent pipe end 12, the user may hermetically assemble the connecting sleeve 2 with the sleeve mounting hole 63. For example, a sealing ring is mounted between the sleeve main body 21 and a hole wall of the sleeve mounting hole 63 for sealing.

Therefore, the drain structure according to the present disclosure does not need to be specially provided with a connecting member for connecting the sleeve main body 21 to the first bent pipe end 12. Thus, the cost is reduced.

According to the drain structure according to the present disclosure, the user can screw the sleeve main body 21 in the urinal trough 61 to connect the sleeve main body 21 to the first bent pipe end 12, which is convenient for assembling.

To mount the urinal, firstly, the user may connect the second bent pipe end 13 to the main drain pipe of the building or to the main drain pipe of the building through the adapter pipe 4. Then, the user may mount the urinal main body 6 on the wall surface 8. Finally, the user may screw the sleeve main body 21 from the urinal trough 61 to be connected to the first bent pipe end 12. This is convenient for mounting. The urinal can be mounted with an operation of only one person. Thus, the manpower is reduced.

According to the drain structure according to the present disclosure, a structure configured to be clamped with the first bent pipe end 12 is no longer arranged in the through hole of the sleeve main body 21, and the through hole of the sleeve main body 21 is a fully open structure. This is convenient for rapid drainage. Furthermore, the drain structure is not prone to be blocked.

In an embodiment, as shown in FIG. 5, the inner surface of the sleeve main body 21 is provided with two sleeve wall protrusions 212 and/or sleeve wall grooves facing towards each other. The selected wrench tool 7 may be in a sheet structure, which is directly inserted into the two sleeve wall grooves or placed on the two opposite sides of the two sleeve wall protrusions 212. The sleeve main body 21 may be rotated by screwing the sleeve wall protrusions 212, which is convenient for operation.

In an embodiment, the sleeve wall protrusions 212 are integrally formed with the sleeve main body 21. The sleeve main body 21 and the sleeve wall protrusions 212 are both rigid plastic members and are integrally molded by injection. This is convenient for machining and molding. Furthermore, the structure has high structural strength.

In an embodiment, as shown in FIG. 3 and FIG. 4 and FIG. 12-FIG. 14, an upper end of the sleeve main body 21 is connected to a sleeve top ring 22, and a bottom surface 221 of the sleeve top ring 22 is provided with a first sealing ring 23.

In this embodiment, the upper end of the sleeve main body 21 is provided with the sleeve top ring 22, the sleeve top ring 22 is coaxially arranged with the sleeve main body 21, and the sleeve top ring 22 is integrally connected to an outer side of the upper end of the sleeve main body 21. The bottom surface 221 of the sleeve top ring 22 is provided with a first sealing ring 23, which is a rubber sealing ring. During the assembling, the first sealing ring 23 is configured to be sealed or disposed between the hole wall of the sleeve mounting hole 63 and the bottom surface 221 of the sleeve top ring 22. The sleeve top ring 22 and the first bent pipe end 12 are clamped on the upper and lower sides of the sleeve mounting hole 63. When the sleeve main body 21 is screwed, the first sealing ring 23 is pressed by the sleeve top ring 22. Thus, a good sealing effect may be achieved.

In an embodiment, as shown in FIG. 3, FIG. 4, and FIG. 6, the bottom surface 221 of the sleeve top ring 22 is provided with a first mounting groove 222. The first sealing ring 23 is assembled in the first mounting groove 222. This may improve the mounting stability of the first sealing ring 23.

In an embodiment, as shown in FIG. 6, the bottom surface 221 of the sleeve top ring 22 is a conical surface, and the radius of the conical surface is tapered and decreased in a direction from top to bottom, e.g., in a top-to-bottom direction of the sleeve top ring 22.

As shown in FIG. 14 and FIG. 15, an upper end opening of the sleeve mounting hole 63 is a conical opening 631. During the assembling, the sleeve top ring 22 is assembled in the conical opening 631. The conical opening 631 is matched with the contour of the conical surface. Thus, the sleeve top ring 22 may be automatically centered in the conical opening 631. The first sealing ring 23 is sealed or disposed between the conical surface of the sleeve top ring 22 and the surface of the conical opening 631. When the connecting sleeve 2 is screwed to make the sleeve main body 21 in threaded connection with or screwed into the first bent pipe end 12, and the conical surface presses the first sealing ring 23 against the surface of the conical opening 631. Thus, a good sealing effect may be achieved.

In an embodiment, as shown in FIG. 1-FIG. 3 and FIG. 9, a top portion of the connecting sleeve 2 is detachably connected to a filter cover 3. The filter cover 3 is provided with a plurality of the filter cover through holes 31 arranged at intervals or spaced apart from each other.

In this embodiment, an upper end of the connecting sleeve 2 is provided with the filter cover 3. The filter cover 3 and the connecting sleeve 2 are detachably connected through a buckle, a jaw, or other structures. This is convenient for disassembling and assembling the urinal. The filter cover 3 is provided with the plurality of the filter cover through holes 31 arranged at intervals or spaced apart from each other. The filter cover 3 is located in the urinal trough 61 for filtering, so as to prevent a tissue, a large-volume sundry, and the like thrown by the user from entering the connecting sleeve 2 to cause blockage.

In an embodiment, as shown in FIG. 1-FIG. 3 and FIG. 9, the bottom portion of the filter cover 3 is connected to at least two elastic jaws 32 arranged at intervals or spaced apart from each other. The elastic jaws 32 are clamped with the sleeve main body 21.

In this embodiment, the bottom surface of the filter cover 3 is connected to more than two elastic jaws 32 arranged at intervals or spaced apart from each other along a circumferential direction. The elastic jaws 32 extend into the sleeve main body 21 to be clamped with the sleeve wall of the sleeve main body 21. This is convenient for disassembling and assembling the urinal.

Specifically, as shown in FIG. 6 and FIG. 9, the lower end of an elastic jaw 32 is provided with a jaw protrusion 321, an inner surface of the sleeve wall of the sleeve main body 21 is provided with a step 213. The jaw protrusions 321 are clamped with the step 213. When the filter cover 3 needs to be disassembled, the elastic jaws 32 are pressed inwardly to separate the jaw protrusions 321 from the step 213, and then the filter cover 3 may be lifted up.

In an embodiment, as shown in FIG. 1-FIG. 4 and FIG. 7, the top surface of the first bent pipe end 12 is connected to a flexible gasket 14, which is a rubber gasket. As shown in FIG. 14 and FIG. 15, during the assembling, the flexible gasket 14 is attached to the bottom surface of the urinal trough 61. This prevents the first bent pipe end 12 made of rigid plastic from contacting and rubbing with the trough wall of the urinal trough 61 made of ceramic and generating abnormal sounds.

In an embodiment, as shown in FIG. 3, FIG. 7, and FIG. 8, the top surface of the first bent pipe end 12 is provided with an annular position limiting groove 122. A bottom surface of the flexible gasket 14 is provided with a gasket convex ring 141 extending downwardly. The gasket convex ring 141 is assembled in the annular position limiting groove 122. This is convenient for assembling the flexible gasket 14 with the first bent pipe end 12.

If needed, the circumferential surface of the gasket convex ring 141 may be provided with convex ribs. During the assembling, the gasket convex ring 141 with the convex ribs is pressed into the annular position limiting groove 122. This may improve the assembling stability of the flexible gasket 14 and the first bent pipe end 12.

In an embodiment, as shown in FIG. 4 and FIG. 7, the top surface of the flexible gasket 14 is provided with a corrugated surface 142, and the corrugated surface 142 is a surface with a concave-convex structure, which increases the friction force between the flexible gasket 14 and the bottom surface of the urinal trough 61.

In an embodiment, as shown in FIG. 1-FIG. 3, the drain structure comprises an adapter pipe 4 connected to the second bent pipe end 13, and the adapter pipe 4 is firmly connected to the second bent pipe end 13 through a clamp 5.

The length of the second bent pipe end 13 can be shortened by configuring the adapter pipe 4 to be connected to the main drain pipe of the building.

While mounting the urinal, firstly, the user may connect one end of the adapter pipe 4 to the main drain pipe of the building and then may connect the second bent pipe end 13 to the other end of the adapter pipe 4 through the clamp 5.

In an embodiment, as shown in FIG. 3, the second bent pipe end 13 is inserted into the adapter pipe 4. A second sealing ring 15 is arranged between the outer surface of the second bent pipe end 13 and the inner surface of the adapter pipe 4 to improve the sealing between the second bent pipe end 13 and the adapter pipe 4 so as to avoid the water leakage.

If needed, two or more second sealing rings 15 may be arranged at intervals or spaced apart from each other.

In an embodiment, as shown in FIG. 7, the outer surface of the second bent pipe end 13 is provided with a second mounting groove 131, and the second sealing ring 15 is assembled in the second mounting groove 131 to improve the mounting stability of the second sealing ring 15 and prevent the second sealing ring 15 from sliding along an axial direction.

As shown in FIG. 10-FIG. 14, a urinal according to an embodiment of the present disclosure comprises a urinal main body 6 and the drain structure according to any one of the foregoing embodiments.

A front side of the urinal main body 6 is provided with the urinal trough 61, and a back or rear side of the urinal main body 6 is provided with a mounting cavity 62. The bottom portion of the urinal trough 61 is provided with a sleeve mounting hole 63.

A least a portion of the drain bent pipe 1 is located in the mounting cavity 62. The first bent pipe end 12 is connected to the bottom portion of the sleeve mounting hole 63.

The connecting sleeve 2 is hermetically assembled with the sleeve mounting hole 63. The sleeve main body 21 passes through the sleeve mounting hole 63 and is in threaded connection with or screwed into the first bent pipe end 12.

The urinal according to the present disclosure comprises a urinal main body 6 and a drain structure.

With respect to the structure, the construction and the working principle of the drain structure are the same as the foregoing description of the drain structure, which incorporated herein.

The urinal main body 6 is a ceramic body. The face side or the front side of the urinal main body 6 is provided with the urinal trough 61. The back side or the rear side of the urinal main body 6 is provided with the mounting cavity 62. The bottom portion of the urinal trough 61 is provided with the sleeve mounting hole 63.

At least a portion or all of the drain bent pipe 1 is located in the mounting cavity 62. The first bent pipe end 12 is connected to the bottom portion of the sleeve mounting hole 63, and the sleeve main body 21 passes through the sleeve mounting hole 63 downwardly and is in threaded connection with or screwed into the first bent pipe end 12.

To mount the urinal, firstly, the user may connect the second bent pipe end 13 to the main drain pipe of the building or to the main drain pipe of the building through the adapter pipe 4. Then, the user may mount the urinal main body 6 on the wall surface 8. Finally, the user may screw the sleeve main body 21 from the urinal trough 61 to be connected to the first bent pipe end 12. This is convenient for mounting. The urinal can be mounted with an operation of only one person. Thus, the manpower is reduced.

Specifically, as shown in FIG. 16 and FIG. 17, to mount the urinal, especially a fully enclosed urinal, firstly, the user may connect the second bent pipe end 13 to the main drain pipe of the building or connected to the main drain pipe of the building through the adapter pipe 4. Then, the user may fox a mounting portion 65 on the back side or the rear side of the urinal main body 6 to a mounting point or a bracket on the wall surface 8. The user may place the first bent pipe end 12 below the sleeve mounting hole 63 of the urinal trough 61. The user may pass or insert the sleeve main body 21 through the sleeve mounting hole 63 downwardly. The user may insert the wrench tool 7 into the sleeve main body 21 in the urinal trough 61 to be cooperated with the sleeve wall protrusions 212 and/or the sleeve wall grooves. Then, the user may rotate the connecting sleeve 2 and may allow the lower end of the sleeve main body 21 to enter the first bent pipe end 12. The user may screw the sleeve main body 21 into the first bent pipe end 12. While screwing the sleeve main body 21, the user may fix the first bent pipe end 12 at the bottom portion of the sleeve mounting hole 63. While mounting the first bent pipe end 12, the user may hermetically assemble the connecting sleeve 2 with the sleeve mounting hole 63. For example, a sealing ring is mounted between the sleeve main body 21 and the hole wall of the sleeve mounting hole 63 for sealing.

In an embodiment, as shown in FIG. 3, FIG. 4, and FIG. 14, the upper end of the sleeve main body 21 is connected to a sleeve top ring 22. The bottom surface 221 of the sleeve top ring 22 is provided with a first sealing ring 23, which is sealed or disposed between the sleeve top ring 22 and the hole wall of the sleeve mounting hole 63.

In this embodiment, the upper end of the sleeve main body 21 is provided with the sleeve top ring 22 which is coaxially arranged with the sleeve main body 21. The sleeve top ring 22 is integrally connected to an outer side of the upper end of the sleeve main body 21. The bottom surface 221 of the sleeve top ring 22 is mounted with the first sealing ring 23 which is a rubber sealing ring. During the assembling, the first sealing ring 23 is configured to be sealed or disposed between the hole wall of the sleeve mounting hole 63 and the bottom surface 221 of the sleeve top ring 22. The sleeve top ring 22 and the first bent pipe end 12 are clamped on the upper and lower sides of the sleeve mounting hole 63. When the sleeve main body 21 is screwed, the first sealing ring 23 is pressed by the sleeve top ring 22. Thus, a good sealing effect may be achieved.

In an embodiment, as shown in FIG. 13 and FIG. 14, the sleeve top ring 22 is assembled in the sleeve mounting hole 63 to prevent the sleeve top ring 22 from protruding out of the sleeve mounting hole 63 and affecting the flowing of the sewage from the urinal trough 61 into the sleeve main body 21.

In an embodiment, as shown in FIG. 13 and FIG. 14, the top surface of the sleeve top ring 22 is in smooth transition with the top surface of the sleeve mounting hole 63. This is beneficial for the smooth flowing of the sewage from the urinal trough 61 into the sleeve main body 21.

In an embodiment, as shown in FIG. 6, FIG. 14, and FIG. 15, the bottom surface 221 of the sleeve top ring 22 is a conical surface, correspondingly, the upper end opening of the sleeve mounting hole 63 is a conical opening 631. The sleeve top ring 22 is assembled in the conical opening 631.

The first sealing ring 23 is sealed or disposed between the conical surface of the sleeve top ring 22 and the surface of the conical opening 631.

In this embodiment, the bottom surface 221 of the sleeve top ring 22 is a conical surface, and the upper end opening of the sleeve mounting hole 63 is the conical opening 631. During the assembling, the sleeve top ring 22 is assembled in the conical opening 631. The conical opening 631 is matched with the contour of the conical surface. Thus, the sleeve top ring 22 may be automatically centered in the conical opening 631. The first sealing ring 23 is sealed or disposed between the conical surface of the sleeve top ring 22 and the surface of the conical opening 631. When the connecting sleeve 2 is screwed to make the sleeve main body 21 in threaded connection with or screwed into the first bent pipe end 12, and the conical surface presses the first sealing ring 23 against the surface of the conical opening 631. Thus, a good sealing effect may be achieved.

In an embodiment, as shown in FIG. 14 and FIG. 15, the bottom surface of the urinal trough 61 is provided with a mounting plane surface 64. A lower end opening of the sleeve mounting hole 63 is located on the mounting plane surface 64.

The top surface of the first bent pipe end 12 is connected to a flexible gasket 14, which is tightly attached to the mounting plane surface 64.

In this embodiment, an upper end of the first bent pipe end 12 is provided with the flexible gasket 14, which is a plastic gasket. This prevents the first bent pipe end 12 made of rigid plastics from contacting and rubbing with the trough wall of the urinal trough 61 made of ceramic and generating abnormal sounds.

The bottom surface of the urinal trough 61 is provided with the mounting plane surface 64. During the assembling, the flexible gasket 14 is flatly and tightly attached to the mounting plane surface 64. Thus, a good stability may be achieved.

The above technical solutions may be combined as required to achieve the best technical effect.

The above description is merely the principles and the preferred embodiments of the present disclosure. It should be pointed out that, for those of ordinary skill in the art, several other variations may be made based on the principle of the present disclosure, which should also be regarded as falling in the protection scope of the present disclosure.

Claims

1-20. (canceled)

21. A drain structure, comprising: a drain bent pipe configured to drain a urinal trough, the drain bent pipe comprising: a bent pipe main body;a first bent pipe end connected to a first end of the bent pipe main body;a second bent pipe end connected to a second end of the bent pipe main body; andan internal thread disposed in the first bent pipe end; anda connecting sleeve configured to connect the urinal trough to the drain bent pipe, the connecting sleeve comprising: a sleeve main body including an external thread configured to be screwed into the first bent pipe end.

22. The drain structure according to claim 21, further comprising: two sleeve wall protrusions disposed on an inner surface of the sleeve main body and facing towards each other.

23. The drain structure according to claim 22, wherein the two sleeve wall protrusions are integrally formed on the inner surface of the sleeve main body.

24. The drain structure according to claim 21, further comprising: a sleeve top ring configured to be connected to an upper end of the sleeve main body; anda first sealing ring configured to be disposed on a bottom surface of the sleeve top ring.

25. The drain structure according to claim 24, further comprising: a first mounting groove disposed on the bottom surface of the sleeve top ring and configured to receive the first sealing ring.

26. The drain structure according to claim 25, wherein the bottom surface of the sleeve top ring is a conical surface, and wherein a radius of the conical surface is decreased in a top-to-bottom direction of the sleeve top ring.

27. The drain structure according to claim 21, further comprising: a filter cover configured to be detachably connected to a top portion of the connecting sleeve, the filter cover comprising a plurality of filter cover through holes spaced from each other.

28. The drain structure according to claim 27, further comprising: a plurality of elastic jaws connected to a bottom portion of the filter cover, the plurality of elastic jaws spaced from each other and configured to are clamped with the sleeve main body.

29. The drain structure according to claim 21, further comprising: a flexible gasket configured to be connected to a top surface of the first bent pipe end.

30. The drain structure according to claim 29, further comprising: an annular position limiting groove disposed on the top surface of the first bent pipe end; anda gasket convex ring disposed on a bottom surface of the flexible gasket, the gasket convex ring extending downwardly,wherein the gasket convex ring is configured to be disposed in the annular position limiting groove.

31. The drain structure according to claim 29, wherein a top surface of the flexible gasket includes a corrugated surface.

32. The drain structure according to claim 21, further comprising: an adapter pipe configured to be connected to the second bent pipe end through a clamp.

33. The drain structure according to claim 32, wherein the second bent pipe end is configured to be inserted into the adapter pipe, and wherein a second sealing ring is configured to be disposed between an outer surface of the second bent pipe end and an inner surface of the adapter pipe.

34. The drain structure according to claim 33, further comprising: a second mounting groove disposed on the outer surface of the second bent pipe end and configured to be receive the second sealing ring.

35. A urinal, comprising: a urinal main body comprising: a urinal trough disposed on a front side of the urinal main body;a mounting cavity disposed on a rear side of the urinal main body; anda sleeve mounting hole disposed on a bottom portion of the urinal trough,a drain structure comprising: a drain bent pipe configured to drain the urinal trough, at least a portion of the drain bent pipe disposed in the mounting cavity, wherein the drain bent pipe comprises a first bent pipe end configured to be connected to a bottom portion of the sleeve mounting hole; anda connecting sleeve configured to be disposed in the sleeve mounting hole, wherein the connecting sleeve comprises a sleeve main body configured to pass through the sleeve mounting hole and configured to be screwed into the first bent pipe end.

36. The urinal according to claim 35, wherein the drain structure further comprises: a sleeve top ring configured to be connected to an upper end of the sleeve main body; anda first sealing ring configured to be disposed on a bottom surface of the sleeve top ring, andwherein the first sealing ring disposed between the sleeve top ring and a hole wall of the sleeve mounting hole.

37. The urinal according to claim 36, wherein the sleeve top ring is disposed in the sleeve mounting hole.

38. The urinal according to claim 37, wherein a top surface of the sleeve top ring transitions to a top surface of the sleeve mounting hole.

39. The urinal according to claim 37, wherein the bottom surface of the sleeve top ring is a conical surface, wherein an upper end opening of the sleeve mounting hole is a conical opening corresponding to the conical surface,wherein the sleeve top ring is configured to be disposed in the conical opening, andwherein the first sealing ring is configured to be disposed between the conical surface of the sleeve top ring and a surface of the conical opening.

40. The urinal according to claim 36, wherein a bottom surface of the urinal trough comprises a mounting plane surface, and wherein a lower end opening of the sleeve mounting hole is disposed on the mounting plane surface,wherein a top surface of the first bent pipe end is connected to a flexible gasket of the drain structure, andwherein the flexible gasket is configured to be connected to the mounting plane surface.