Flushing toilet drain unit

Abstract

Provided is a flushing toilet drain unit that reduces the manufacturing cost of a lid and a seal and the number of man-hours required for assembly. A flushing toilet drain unit includes: a toilet side drain path connector that is connectable to a toilet side drain path through which toilet drain water from a toilet bowl flows; a hand washing side drain path connector (6) that is connectable to a hand washing side drain path through which hand washing drain water from a hand washing basin flows; a drain confluence portion at which the toilet drain water and the hand washing drain water confluence with each other; and a sealing portion (10) that separates the inside of the hand washing side drain path connector from the outside. The sealing portion (10) and the hand washing side drain path connector are integrally formed.

Description

Technical Field

[0001] This disclosure relates to a flush toilet drainage unit. Background Technology

[0002] Conventionally, in restrooms, the washbasin is positioned above the cistern (low-level tank) fixed behind the toilet, allowing hands to be washed with water stored in the cistern for flushing after using the toilet. However, since the handwashing water is subsequently used for flushing, there is a conflict regarding the inclusion of soap and other substances used during handwashing in the toilet flushing water. Furthermore, toilets without a cistern at the rear have become widely adopted. Therefore, in recent years, such as... Figure 6 As shown, there are increasingly more cases where washbasins 30 are installed in toilets 100 as components separate from toilet bowls.

[0003] In this case, the handwashing drain path 34 through which the handwashing drain from the sink flows is typically separate from the toilet drain path through which the toilet drain flows. However, this method requires plumbing work in the building, thus involving time-consuming and labor-intensive steps. Therefore, it has recently become preferred to merge the handwashing drain path 34 through which the handwashing drain from the sink 30 flows with the toilet drain path, so that the handwashing drain and toilet drain can be discharged together (e.g., Patent Document 1).

[0004] Incidentally, in toilets that can drain both handwashing and toilet water together, such as the toilet disclosed in Patent Document 1, when the handwashing side drain path 34 is not connected to the handwashing side drain path connector 6, for example when the washbasin, as a separate component, is not installed in the toilet 100, such as... Figure 7 As shown, the toilet's handwashing side drain path connector 6 is sealed by a cap 51 and a seal 52, which are separate components from the handwashing side drain path connector 6, thereby preventing backflow of toilet drainage and / or odor leakage through the toilet side drain path.

[0005] Figure 7 A device is shown for separating the trap parthousing section 3 from the outside of the drain unit at the drain path connector 6 on the handwashing side. (Example) Figure 7 As shown, the trap storage section 3 is usually separated from the outside by the seal 52 and the cap 51, and when the washbasin 30 is installed in the bathroom 100, for example, the installer removes the cap 51 and the seal 52, thereby connecting the washbasin side drain path 34 to the washbasin side drain path connector 6.

[0006] Reference List Patent documents Patent Document 1: JP 2008-291612 A Summary of the Invention

[0007] However, attaching the cap, which consists of a cap 51 and a seal 52 that are separate components from the handwashing side drain path connector 6, to the handwashing side drain path connector 6 increases the manufacturing cost of the cap 51 and the seal 52 as well as the amount of time required for assembly, which is disadvantageous for the manufacturer.

[0008] In view of the above, one object of this disclosure is to provide a flush toilet drainage unit that reduces the manufacturing cost of the cap 51 and the seal 52 as well as the number of hours required for assembly.

[0009] The present disclosure discloses a toilet flushing drainage unit comprising: a toilet-side drainage path connector capable of connecting to a toilet-side drainage path through which toilet drainage from the toilet bowl flows; a handwashing-side drainage path connector capable of connecting to a handwashing-side drainage path through which handwashing drainage from the handwashing basin flows; a drainage confluence section where toilet drainage and handwashing drainage merge; and a sealing section that separates the inner and outer sides of the handwashing-side drainage path connector, the sealing section and the handwashing-side drainage path connector being integrally formed. Attached Figure Description

[0010] Figure 1 This is a cross-sectional view of the flush toilet drainage unit according to the first embodiment of the present disclosure; Figure 2 This is a cross-sectional view of the upper part of the drain housing of the toilet flushing unit; Figure 3 An enlarged view of the sealing portion of the flush toilet's drain unit is shown, in which... Figure 3 A is the front view. Figure 3 B is a side view section; Figure 4 A flush toilet drainage unit according to a second embodiment of the present disclosure is shown, wherein, Figure 4 A is a side cross-sectional view of the flush toilet's drainage unit. Figure 4 B is a rear view of the flush toilet drain unit; Figure 5 This is a schematic diagram of a drainage socket according to a third embodiment of the present disclosure; Figure 6 This is an overall view of a standard bathroom; and Figure 7 This is a view of the upper part of the housing of a conventional flush toilet drain unit. Detailed Implementation

[0011] Embodiments of the flush toilet drainage unit according to the present disclosure will now be described with reference to the accompanying drawings. Note that the embodiments disclosed below are merely examples and are not intended to limit the flush toilet drainage unit according to the present disclosure.

[0012] Furthermore, in the embodiments disclosed below, overly detailed descriptions are sometimes omitted. This is to avoid unnecessarily lengthy descriptions and to facilitate understanding by those skilled in the art.

[0013] (Overall structure) Figure 1 This is a cross-sectional view of a flush toilet drainage unit 1 according to an embodiment of the present disclosure.

[0014] In the first embodiment, a flush toilet drain unit 1 with a movable water trap is disclosed. The flush toilet drain unit 1 is covered by a housing 2, and a water trap 4 is housed inside the housing 2. The water trap 4 will be described later.

[0015] The housing 2 ideally has an airtight structure to prevent odors from leaking from the sewage pipe.

[0016] exist Figure 1 In the flush toilet drainage unit 1 shown, the housing 2 has a through hole 5 through which a water trap 4 passes. One end of the water trap 4 is exposed outside the housing 2. In this state, the water trap 4 has an upstream opening 4a exposed outside the housing 2.

[0017] The exposed end of the trap 4 outside the housing 2 serves as the toilet-side drain path connector 7. It is located on the toilet body 31 (see...). Figure 7 The toilet-side drain path 35 in the toilet bowl (not shown) is connected to the toilet-side drain path connector 7. Water in the toilet body 31 flows into the water trap housing 3 through the upstream opening 4a of the water trap 4. The water trap housing 3 is inside the flushing toilet drain unit 1. The water trap 4 does not necessarily have to pass through the housing 2. The water trap 4 can be completely accommodated inside the housing 2.

[0018] In this case, the toilet water that has been drained or stored through the through hole 5 of the housing 2 flows into the interior of the water trap 4 through the upstream side opening 4a of the water trap 4.

[0019] In the following text, the side of the toilet body 31 of the flush toilet drain unit 1 is referred to as the front side, and the side of the flush toilet drain unit 1 opposite to the toilet body 31 is referred to as the rear side.

[0020] In addition, the housing 2 is provided with a handwashing side drain path connector 6. A handwashing side drain path 34 extends from the washbasin 30, which is also provided in the bathroom 100 (see...). Figure 6It is connected to the handwashing side drain path connector 6, and the handwashing drain discharged from the handwashing basin 30 flows into the water trap storage section 3 inside the toilet flushing drain unit 1.

[0021] Figure 2 This is a cross-sectional view of the upper part cut from the flush toilet drain unit 1. The handwashing side drain path connector 6 has a cylindrical structure. Inside the handwashing side drain path connector 6, there is a sealing part 10 that separates the water trap storage part 3 from the outside of the flush toilet drain unit 1. The sealing part 10 will be described later.

[0022] In addition, such as Figure 1 As shown, the housing 2 has a drain outlet 8. Toilet drain water flowing into the water trap storage section 3 through the downstream opening 4b of the water trap 4 and / or handwashing drain water flowing into the water trap storage section 3 through the handwashing side drain path 34 are discharged to the outside of the toilet flushing drain unit 1 through the drain outlet 8.

[0023] Furthermore, at this time, the toilet drain discharged through the downstream opening 4b and the handwashing drain discharged through the handwashing drain path 34 merge at a portion of the trap collection section 3. The portion where the toilet drain and handwashing drain merge is the drain confluence section 9. In many cases, the drain confluence section 9 is close to the drain outlet 8, but it can be separated from the drain outlet 8.

[0024] exist Figure 1 In the example shown, the drain outlet 8 is located at the bottom part 1a of the toilet flushing drain unit 1, that is, on the floor side.

[0025] The drain outlet 8 is located at the bottom surface 1a to utilize gravity, thereby enabling the effective drainage of toilet water and / or handwashing water.

[0026] Furthermore, the handwashing side drain path connector 6, the toilet side drain path connector 7, and the drain outlet 8 preferably have a tubular shape. More specifically, the handwashing side drain path connector 6, the toilet side drain path connector 7, and the drain outlet 8 preferably have a circular tubular shape, but may have a tubular shape other than a circular tubular shape, or may have a non-tubular shape. The handwashing side drain path connector 6, the toilet side drain path connector 7, and the drain outlet 8 may have an elliptical or quadrilateral tubular shape.

[0027] Furthermore, the handwashing side drain path connector 6 is preferably positioned higher than the drain outlet 8. Therefore, handwashing drainage from the handwashing side drain path 34 into the water trap collection section 3 easily flows into the drain outlet 8.

[0028] The handwashing side drain path connector 6 is preferably located on the rear side of the toilet flushing drain unit 1. Therefore, when the handwashing side drain path 34 extending from the washbasin 30 is connected to the handwashing side drain path connector 6, the toilet body 31 will not obstruct the connection process, thus facilitating the connection.

[0029] Furthermore, since the toilet-side drain path connector 7 will be connected to the toilet body 31, the toilet-side drain path connector 7 is preferably located on the side of the toilet body 31, i.e., on the front side.

[0030] Note that the arrangement of the toilet-side drain path connector 7, the handwashing-side drain path connector 6, and the drain outlet 8 is not limited to this example; the toilet-side drain path connector 7, the handwashing-side drain path connector 6, and the drain outlet 8 may also be provided on other surface parts.

[0031] Figure 2 The flush toilet drain unit 1 shown includes a shield 36. The shield 36 will be described later.

[0032] like Figure 1 As shown, the movable water trap type flush toilet drain unit 1 includes a water trap 4, which has a free end 4c that pivots vertically. When the free end 4c of the water trap 4 faces upward, water can be stored in the toilet bowl (not shown). Furthermore, when the free end 4c of the water trap 4 faces downward, water in the toilet bowl (not shown) can be drained, and waste can be discharged from the toilet bowl (not shown). When the free end 4c of the water trap 4 faces downward, water stored in the toilet bowl (not shown) flows into the water trap 4, then into the drain outlet 8 and is discharged.

[0033] The trap 4 is a tubular component with a corrugated structure. One end of the trap 4 serves as a toilet-side drain path connector 7 connected to the toilet body 31, and the other end of the trap 4 serves as a free end 4c that pivots vertically. The drive device 4d causes the free end 4c to pivot vertically.

[0034] Then, as Figure 6 As shown, the handwashing side drain path 34 extending from the washbasin 30 is connected to the handwashing side drain path connector 6 of the toilet flushing drain unit 1.

[0035] Therefore, the handwashing wastewater generated during handwashing in the washbasin 30 flows through the handwashing-side drainage path 34 and via the handwashing-side drainage path connector 6 into the trap reservoir 3, which serves as the flush toilet drainage unit 1. The handwashing wastewater that has already flowed into the trap reservoir 3 merges with the toilet-side wastewater discharged through the downstream opening 4b of the trap 4 at the drain confluence, resulting in combined drainage. The combined drainage is discharged into the drainage path (not shown) through the drain outlet 8.

[0036] (Main components) Figure 3 A and 3B are enlarged views of the handwashing side drain path connector 6, as seen from the outside of the toilet flushing drain unit 1. More specifically, Figure 3 A is the front view, and Figure 3 B is a side view section.

[0037] Inside the handwashing side drain path connector 6, there is a sealing part 10 that separates the water trap storage part 3 inside the toilet flushing drain unit 1 from the outside of the toilet flushing drain unit 1.

[0038] The sealing part 10 is disposed inside the handwashing side drain path connector 6 and is connected to the inner periphery 6a of the handwashing side drain path connector 6.

[0039] When the handwashing side drain path 34 is not connected to the handwashing side drain path connector 6, for example when the washbasin 30 is not installed in the toilet 100, the sealing part 10 can prevent odors from the toilet drain from leaking to the outside through the handwashing side drain path connector 6.

[0040] Furthermore, the sealing part 10 is not like the cap 51 (see Figure 7 Unlike other components, it is not separate from the handwashing side drain path connector 6, but is integrally formed with the handwashing side drain path connector 6.

[0041] This eliminates the component costs and labor hours required to manufacture the sealing part 10 as a separate component.

[0042] In such Figure 7 In the conventional flush toilet drain unit 1 shown, the advantage of using a cap 51 to separate the inner and outer sides of the handwashing side drain path connector 6 is that the cap 51 can be opened and closed multiple times and is therefore reusable. However, once the handwashing side drain path 34 is connected, it is rarely removed. Therefore, once the cap 51 is removed, it is rarely reinstalled.

[0043] Therefore, integrally molding the sealing part 10 with the handwashing side drainage path connector 6 can reduce costs without any disadvantages.

[0044] Conversely, when the connection between the handwashing side drain path connector 6 and the handwashing side drain path 34 is no longer needed, for example when the handwashing basin installed in the toilet 100 is removed, a structure can be adopted in which the water trap storage section 3 can be separated from the outside of the toilet flushing drain unit 1 by reusing the cap 51 and the seal 52.

[0045] In addition, such as Figure 2 , Figure 3 A and Figure 3As shown in Figure B, when viewed from the front, a handle 11 is provided on the upper part of the sealing portion 10. The handle 11 extends outward from the sealing portion 10 toward the outside of the flush toilet drain unit 1. The user can grasp and pull the handle 11 to detach the sealing portion 10 from the handwashing side drain path connector 6. Thus, a path is established connecting the outside of the flush toilet drain unit 1 to the water trap storage portion 3, and the handwashing side drain path 34 from the washbasin 30 is connected to the handwashing side drain path connector 6, thereby allowing handwashing drainage to be discharged via the flush toilet drain unit 1.

[0046] The protruding height of the handle 11 is shaped such that the handle 11 is accommodated within the tube constituting the handwashing side drain path connector 6. This prevents, for example, during the installation of the toilet flushing drain unit 1, the sealing part 10 from disengaging from the handwashing side drain path connector 6 due to the handle 11 colliding with or being stuck on another component.

[0047] Furthermore, for example, when the height of the handwashing side drain path connector 6 is small, the hand grip 11 may have a height that protrudes from the tube constituting the handwashing side drain path connector 6.

[0048] In addition, such as Figure 3 As shown in Figure A, the gripper 11 is shaped as a triangle with its apex facing outwards from the handwashing side drain path connector 6. Shaping the gripper 11 into a triangular shape with its apex facing outwards from the handwashing side drain path connector 6 allows a person to easily grasp the gripper 11 with their hand and easily detach the stop 10 from the handwashing side drain path connector 6. In this example, the gripper 11 is triangular in the circumferential direction of the handwashing side drain path connector 6, but it is not mandatory to be triangular. For example, the cross-sectional shape taken perpendicular to the protruding direction of the gripper 11 can be quadrilateral or circular. Furthermore, the gripper 11 is not necessarily a triangle with its apex facing outwards, but can be, for example, a triangle with its apex facing inwards from the handwashing side drain path connector 6.

[0049] With the sealing part 10 removed from the handwashing side drain path connector 6, the handwashing side drain path 34 is connected to the handwashing side drain path connector 6, thereby allowing handwashing drainage to flow into the water trap storage part 3 in the flush toilet drain unit 1, and then be discharged through the drain outlet 8.

[0050] In addition, such as Figure 3 As shown in A and 3B, in the sealing portion 10, the portion near the connection portion 14 where the sealing portion 10 connects to the handwashing side drain path connector 6 is a thin-walled portion 12, which is shaped to be thinner than other portions.

[0051] Furthermore, the housing 2 and the sealing portion 10 are integrally formed by injection molding. In integral molding by injection molding, the gap in the cavity corresponding to the thin-walled portion 12 in the mold is typically narrowed to form the thin-walled portion 12. Alternatively, a method can be adopted in which a mold with a larger cavity gap is used during resin filling, and the thin-walled portion 12 is formed by, for example, compression treatment of the molded portion after molding.

[0052] The thin-walled portion 12 is formed to a width of approximately 1 mm from the inner periphery 6a of the handwashing side drain path connector 6 toward the inward side. The width is preferably appropriately modified according to the size of the handwashing side drain path connector 6 and / or the molding material.

[0053] By forming a portion of the connecting portion 14, which connects the sealing portion 10 to the handwashing side drain path connector 6, as a thin-walled portion 12, it is easy to detach the sealing portion 10 from the handwashing side drain path connector 6. Furthermore, providing a handle portion 11 near the thin-walled portion 12 further facilitates the detachment of the sealing portion 10, but the handle portion 11 can be located near the center of the sealing portion 10.

[0054] Furthermore, the thin-walled portion 12 may correspond to the entirety of the connecting portion 14 where the sealing portion 10 connects to the handwashing side drain path connector 6, but the thin-walled portion 12 does not necessarily have to correspond to the entire connecting portion 14, but may correspond only to a part of the connecting portion 14.

[0055] The thin-walled portion 12 preferably has a thickness of 0.1 to 0.4 mm. More specifically, the thickness of the thin-walled portion 12 is more preferably 0.1 to 0.3 mm. Further, the thickness of the thin-walled portion 12 is more preferably 0.1 to 0.2 mm.

[0056] The portion of the sealing portion 10 excluding the thin-walled portion 12 preferably has a thickness of 0.5 to 1.0 mm. More specifically, the thickness of the portion of the sealing portion 10 excluding the thin-walled portion 12 is preferably 0.6 to 0.9 mm. Further, the thickness of the portion of the sealing portion 10 excluding the thin-walled portion 12 is preferably 0.7 to 0.8 mm.

[0057] Furthermore, the width and thickness of the thin-walled portion 12 can be designed accordingly to enable the thin-walled portion 12 to resist the pressure inside the housing 2.

[0058] The sealing portion 10 has a recess 13 below the grip portion 11. The recess 13 is formed as a thin wall in a similar manner to the thin-walled portion 12. The thickness of the recess 13 need not be exactly equal to the thickness of the thin-walled portion 12, but is preferably substantially equal to the thickness of the thin-walled portion 12.

[0059] The recess 13 is provided so that the sealing part 10 can be easily detached from the handwashing side drain path connector 6.

[0060] Furthermore, the length of the recess 13 in the lateral direction is preferably greater than the width of the grip portion 11 in the lateral direction.

[0061] The length of the recess 13 in the vertical direction is set to about 2 mm, and the length of the recess 13 in the vertical direction is also expected to be appropriately varied according to the molding material used for the handwashing side drain path connector 6 and / or the sealing part 10.

[0062] Because the lower part of the grip 11 has a recess 13, gripping the grip 11 and applying force in the direction of the recess 13 makes the sealing part 10 easy to detach from the handwashing side drain path connector 6.

[0063] The distance from the lower end of the gripping part 11 to the recess 13 is preferably about 0.5 mm, but it can be greater or less than 0.5 mm.

[0064] In addition, the toilet side drainage path 35, as Figure 2 As shown in the diagram, even if the toilet drain, whose flow is obstructed by dirt accumulated in the toilet-side drain path 35 and / or the trap 4, attempts to flow back into the handwashing-side drain path 34, the toilet drain flowing toward the handwashing-side drain path 34 will impact the shield 36, thereby reducing the flow momentum of the toilet drain and thus reducing the risk of toilet drain flowing back into the handwashing-side drain path 34.

[0065] Furthermore, when the handwashing-side drain path 34 from the washbasin 30 is not connected to the handwashing-side drain path connector 6, the sealing part 10 remains connected to the handwashing-side drain path connector 6; however, there is a slight possibility that the wind pressure caused by the flow of toilet drainage may damage the sealing part 10. The shielding part 36 also serves to prevent wind pressure from being transmitted to the sealing part, thereby preventing the sealing part 10 from accidentally detaching from the handwashing-side drain path connector 6.

[0066] Next, the flush toilet drainage unit 16 with a drain outlet 8 on the rear side will be described as a second embodiment. Figure 4 Views A and 4B are views illustrating the flush toilet drainage unit 16 of the second embodiment. More specifically, Figure 4 A is a cross-sectional side view of the flush toilet drainage unit 16. Figure 4 B is a rear view of the toilet flushing drain unit 16.

[0067] The second embodiment differs from the first embodiment in the location and opening direction of the drain outlet 8. Note that in the following description, components similar to those in the first embodiment are indicated by the same reference numerals as those in the first embodiment, and their detailed descriptions are omitted; components different from those in the first embodiment will be described in detail.

[0068] The flushing toilet drain unit 16 includes a handwashing side drain path connector 6 with a shield 36 provided in a similar manner to the flushing toilet drain unit 1. When the sealing part 10 is removed from the handwashing side drain path connector 6, the shield 36 covers the outlet 34a of the handwashing side drain path 34 that is inserted into the handwashing side drain path connector 6 and connected to the handwashing side drain path 34 of the handwashing side drain path connector 6. In addition, the flushing toilet drain unit 16 has a bypass path 37 that bypasses the shield 36 from the outlet 34a of the handwashing side drain path 34 and communicates with the trap storage part 3.

[0069] Specifically, the trap section 3 has a rear wall 3a, which has a rearwardly recessed step 38. The outlet 34a of the handwashing side drainage path 34 is located in the upper region of the rear surface of the step 38. A drooping wall 39 is configured to extend downward from the upper edge of the step 38 of the rear wall 3a, thereby forming a shield 36 that covers the outlet 34a of the handwashing side drainage path 34. The gap between the lower surface 39a of the drooping wall 39 (which is the lower surface of the drooping wall 39) and the lower surface 38a of the step (which is the cross-section of the step) forms a bypass path 37. The handwashing drainage flows through the bypass path 37 into the drainage confluence section 9.

[0070] In addition, providing a bypass path 37 ensures the flow path of handwashing drainage into the drainage confluence section 9.

[0071] Figure 1 The examples shown can include similar to Figure 2 The bypass path 37 is shown.

[0072] In this case, in order to minimize stagnation in the toilet drain from the trap 4, the downstream opening 4b of the trap 4 and the drain 8 are positioned at substantially the same location in the left / right direction, and the handwashing side drain path connector 6 is positioned offset in the left / right direction relative to the locations of the downstream opening 4b of the trap 4 and the drain 8.

[0073] In other words, the central axis C1 of the handwashing side drain path connector 6 and the central axis C2 of the drain outlet 8 are positioned offset from each other in the left / right direction. More specifically, the handwashing side drain path connector 6 is positioned slightly to the upper left of the drain outlet 8 when viewed from the trap 4.

[0074] During flushing, as the trap 4 pivots downwards, a small amount of toilet waste may splash backwards from the downstream opening 4b of the trap 4. Since the drain outlet 8 is positioned substantially at the same location as the downstream opening 4b of the trap 4 in the left / right direction, the splashed toilet waste flows smoothly through the drain outlet 8 without stagnation, thereby reducing the likelihood of dirt or other contaminants adhering to the toilet-side drain path 35.

[0075] On the other hand, as described above, the position of the handwashing side drain path connector 6 is set at a position offset from the position of the downstream side opening 4b of the water trap 4 and the position of the drain outlet 8 in the left / right direction, thereby reducing the possibility that the toilet water splashed out through the downstream side opening 4b of the water trap 4 when the water trap 4 pivots will be directly captured by the handwashing side drain path connector 6.

[0076] In other words, this can also reduce the risk of backflow from the toilet-side drain device into the handwashing-side drain path 34.

[0077] Furthermore, the drainage structure used in a movable trap toilet and the flushing toilet drainage unit 1 have been described in detail above; however, the drainage structure can be used in devices other than movable trap toilets. For example, such as... Figure 4 As shown, the flushing toilet drainage unit 1 can be a flushing toilet drainage unit for a siphon-type toilet. Furthermore, the flushing toilet drainage unit 1 can be a siphon jet type or a siphon vortex type.

[0078] In a third embodiment of this disclosure, a drainage support 20 will be described.

[0079] Figure 5 This is a schematic diagram of the drain holder 20. The drain holder 20 is provided with a handwashing side drain path connector 22, a toilet side drain path connector 21, and a drain outlet 23. The drain holder 20 is connected to either the toilet flushing drain unit 1 or the toilet flushing drain unit 16. To prevent sewer odors from the sewage pipe from flowing in and to discharge flushing water into the toilet bowl in one go, the toilet is provided with a water trap, such as a siphon jet type, a siphon vortex type, or a movable water trap. In the above embodiments, the toilet flushing drain unit 1 and the toilet flushing drain unit 16, in which the water trap and the handwashing side drain path connector 6 are integrated, have been described. However, in the third embodiment, a toilet flushing drain unit including a water trap (not shown) and the drain holder 20 will be described.

[0080] like Figure 6 As shown, the handwashing side drain path 34 extending from the washbasin 30 can be connected to the handwashing side drain path connector 22 of the drain holder 20. The toilet side drain path connector 21 is connected to the toilet side drain path (not shown) extending from the trap.

[0081] The toilet-side drain path connector 21 can be connected to the toilet-side drain path extending from the water trap, or a short connecting pipe can be installed between the toilet-side drain path connector 21 and the water trap.

[0082] Handwashing wastewater that has flowed into the handwashing side drain inlet 27 and toilet wastewater that has flowed into the toilet side drain inlet 26 merge at the drain confluence 24, resulting in combined drainage. The combined drainage is discharged into the drainage path (not shown) through the drain outlet 23.

[0083] The internal structure of the drain holder 20 is not limited to the structure shown in the figure. In this embodiment, a toilet-side drain inlet 26 and a handwashing-side drain inlet 27 are formed inside the drain holder 20 and then merge.

[0084] Note that it is not necessary to have a toilet-side drain inlet 26 and a handwashing-side drain inlet 27. The interior of the drain holder 20 can be a single, continuous space.

[0085] The toilet-side drain path connector 21 opens upwards, while the handwashing-side drain path connector 22 opens laterally. This configuration facilitates the flow of water from the toilet side, but the toilet-side drain path connector 21 and the handwashing-side drain path connector 22 are not necessarily open in the aforementioned orientation. For example, the toilet-side drain path connector 21 may open laterally, and the handwashing-side drain path connector 22 may open upwards.

[0086] A sealing portion 25 is provided inside the handwashing side drain path connector 22, and the sealing portion 25 is connected to the inner periphery 22a of the handwashing side drain path connector 22. Because of the sealing portion 25, when the handwashing side drain path 34 is not connected to the handwashing side drain path connector 22, for example when the washbasin 30 is not installed in the toilet 100, the sealing portion 25 separates the interior of the drain support 20 from the exterior of the drain support 20, preventing odors from the toilet side drain from leaking to the outside through the handwashing side drain path connector 22. Therefore, the sealing portion 25 and the handwashing side drain path connector 22 are integrally formed in the drain support 20, which constitutes part of the toilet flushing drain unit.

[0087] The sealing part 25 is constructed similarly to the structure of the movable water trap flush toilet drain unit 1, and its description is omitted in this embodiment.

[0088] The first aspect of the flushing toilet drainage unit (1) includes a toilet-side drainage path connector (21), a handwashing-side drainage path connector (22), a drainage confluence section (9), and a sealing section (10). The toilet-side drainage path connector (21) can be connected to the toilet-side drainage path (35) through which drainage from the toilet bowl flows. The handwashing-side drainage path connector (22) can be connected to the handwashing-side drainage path (34) through which handwashing drainage from the washbasin (30) flows. The toilet drainage and handwashing drainage merge at the drainage confluence section (9). The sealing section (10) separates the inner and outer sides of the handwashing-side drainage path connector (22). The sealing section (10) and the handwashing-side drainage path connector (22) are integrally formed.

[0089] The second aspect is achieved by combining the first aspect. In the second aspect, the connection part (14) connecting the sealing part (10) and the handwashing side drain path connector (22) is thin-walled.

[0090] The third aspect is achieved by combining the first or second aspect. In the third aspect, the handwashing side drain path connector (22) is a pipe, the sealing part (10) is provided in the pipe constituting the handwashing side drain path connector (22), and the toilet flushing drain unit (1) has a handle (11) protruding from the sealing part (10) to the outside of the handwashing side drain path connector (22).

[0091] The fourth aspect is achieved by combining the third aspect. In the fourth aspect, the height of the hand grip (11) is such that the hand grip (11) is accommodated within the tube that constitutes the handwashing side drain path connector (22).

[0092] The fifth aspect is achieved by combining the second aspect. In the fifth aspect, the connecting part (14) where the sealing part (10) connects to the handwashing side drain path connector (22) has a thickness of 0.1 mm to 0.4 mm.

[0093] The sixth aspect is achieved by combining the third aspect. In the sixth aspect, the hand-pinching part (11) has a triangular shape, with the apex of the triangular shape facing the outside of the handwashing side drain path connector.

[0094] The seventh aspect is achieved by combining the first aspect. In the seventh aspect, the sealing part (10) has a thin-walled recess (13).

[0095] The eighth aspect is achieved in conjunction with the first aspect. The eighth aspect also includes a shield (36) which is provided at the outlet of the handwashing side drain path (34) to cover the outlet, so that handwashing drainage flows from the outlet of the handwashing side drain path (34) around the shield (36) into the drain confluence section (9).

[0096] List of reference numerals 1,16 Flushing toilet drain unit 1a Bottom surface 2. Shell 3. Water trap storage section 3a Rear wall 4. Water trap 4a Upstream side opening 4b Downstream side opening 4c free end 4D drive unit 5 through holes 6.22 Handwashing side drain path connector 6a, 22a Inner peripheral portion 7.21 Toilet-side drain path connector 8.23 Drainage outlet 9.24 Drainage confluence section 10, 25 sealing part 11. Pinch the hand 12 Thin-walled section 13 recess 14 Connecting parts 20 Drainage bearing 26. Toilet side drain inlet 27. Drainage inlet on the handwashing side 30 washbasins 31 Toilet body 34. Drainage path on the handwashing side 34a Export 35. Toilet side drainage path 36 Shielding section 37 Bypass Path 38 Steps 38a Lower surface of the step 39. Drooping wall portion 39a Lower surface of the drooping wall portion 51 hats 52 Seals 100 Toilets C1, C2 central axes

Claims

1. A flush toilet drainage unit, comprising: A toilet-side drain path connector that can be connected to a toilet-side drain path through which toilet drainage from the toilet bowl flows; A handwashing side drain path connector that can be connected to a handwashing side drain path through which handwashing drainage from the sink flows; The drain confluence section is where the toilet drain and the handwashing drain merge. as well as The sealing part separates the inner and outer sides of the handwashing side drain path connector. The sealing part and the handwashing side drainage path connector are integrally formed.

2. The flush toilet drainage unit according to claim 1 further includes a connecting part that connects the sealing part to the handwashing side drainage path connector, the connecting part being thin-walled.

3. The flush toilet drainage unit according to claim 1 or 2, wherein, The handwashing side drainage path connector is a pipe. The sealing portion is disposed in the pipe constituting the handwashing side drainage path connector, and The flush toilet drain unit has a handle that protrudes from the sealing portion to the outside of the handwashing side drain path connector.

4. The flush toilet drainage unit according to claim 3, wherein, The height of the handle is such that it is accommodated within the pipe constituting the handwashing side drain path connector.

5. The flush toilet drainage unit according to claim 2, wherein, The connection between the sealing part and the handwashing side drainage path connector has a thickness of 0.1 mm to 0.4 mm.

6. The flush toilet drainage unit according to claim 3, wherein, The hand grip has a triangular shape, with the apex of the triangle facing the outside of the handwashing side drain path connector.

7. The flush toilet drainage unit according to claim 1, wherein, The sealing portion has a small-thickness recess.

8. The flush toilet drainage unit according to claim 1 further includes a shielding part, the shielding part being disposed at the outlet of the handwashing side drainage path to cover the outlet, such that the handwashing drainage flows from the outlet of the handwashing side drainage path around the shielding part into the drainage confluence part.

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