Drainage unit

Abstract

To provide a drainage unit and a construction method of the same that facilitate installation of a tank body and also facilitate its replacement.SOLUTION: A drainage unit 10 used in a faucet device according to the present invention comprises: a tank body 12; a drain port 14 disposed at a lower part of the tank body 12; and a drain trap 16, wherein the drain port 14 is disposed directly above the drain trap 16.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] This invention relates to a drainage unit. To In particular, for example, drainage units equipped with a tank such as a washbasin or hand basin with a water seal (trap) function To Regarding. [Background technology]

[0002] Conventional water seal (trap) structures include siphon traps such as S-traps and P-traps, and non-siphon traps such as bowl traps and drum traps. These traps require space in the vertical direction, such as U-shapes, and need to be stored inside a vanity unit, for example, which reduces the storage space. Currently, there is a need to install washbasins and hand-washing basins in various places to prevent infection by viruses, etc. In particular, there is a demand for basins that can be installed directly on shoe cabinets, washstands, dressing tables, etc., rather than those that require space like S-traps and P-traps. Also, a glass bowl washbasin counter suitable for attaching and detaching a glass bowl has been proposed (Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 4496849 Summary of the Invention [Problem to be solved by the invention]

[0004] It is desirable that hand washing basins installed in the entranceway can be replaced according to the season, but the glass bowl in Patent Document 1 cannot be easily replaced. There is also a demand for a drainage unit that allows the washbasin or hand basin to be easily installed in the drainage trap after installation, and also allows the tank body to be easily replaced after installation of the washbasin or hand basin in the drainage trap is complete. Therefore, the main object of the present invention is to provide a drainage unit that is easy to install and replace. To The purpose is to provide. [Means for solving the problem]

[0005] The drainage unit according to the present invention comprises: A drainage unit used in a water faucet device, The apparatus comprises a tank body, a drain outlet portion disposed at a lower portion of the tank body, and a drain trap portion, The drain outlet portion is a drain unit disposed directly above the drain trap portion. In the drainage unit according to the present invention, a part or all of the drain outlet portion may be in direct contact with the drain trap portion. In the drainage unit according to the present invention, a part or all of the drain outlet portion may be fitted into the drain trap portion. The drainage unit of the present invention may be configured so that the tank body can be separated from the drain trap portion by disengaging the drain outlet portion from the drain trap portion, thereby enabling the tank body to be replaced. The drainage unit of the present invention may be configured so that the drain outlet portion has a pipe body that is attached between the tank body and the drain trap portion, and an attachment member for attaching the pipe body to the tank body, and the tank body to which the drain outlet portion is attached can be separated from the drain trap portion together with the drain outlet portion. In the drainage unit according to the present invention, the drain outlet may be detachably attached to a drain opening formed in the bottom of the tub body. In the drainage unit according to the present invention, the drainage trap portion may be detachably attached to the bottom portion of the tank body. The drainage unit of the present invention may be configured such that the drain trap section has a water sealing section and a drainage section inside its outer wall section, the drain outlet section is arranged between the water sealing section and the tank body, and a drainage pipe is connected to the outer wall section, so that water flowing out of the water sealing section flows into the drainage pipe via the drainage section. The drainage unit according to the present invention may be a washbasin or hand basin in which the tank body is detachably attached to a stand provided with a discharge device in the vicinity of the discharge device. 。 [Effects of the Invention]

[0006] According to the drainage unit of the present invention, the tank body can be easily attached and replaced. To can be provided.

[0007] The above and other objects, features, and advantages of the present invention will become more apparent from the following detailed description of the preferred embodiments of the present invention, which proceeds with reference to the accompanying drawings. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a perspective view of a tank body system equipped with a drainage unit according to an embodiment of the present invention; [Figure 2] 1 is a perspective view of a trap-equipped tank body according to an embodiment of the present invention; [Figure 3] 1 is a partially cross-sectional front view of a tank body system equipped with a drainage unit according to an embodiment of the present invention; [Figure 4] 1 is a front cross-sectional diagram of a tank body system equipped with a drainage unit according to an embodiment of the present invention; [Figure 5] 1 is a partially cross-sectional front view of a tank body system equipped with a drainage unit according to an embodiment of the present invention; [Figure 6] 1 is an exploded perspective view of a drainage unit according to an embodiment of the present invention; [Figure 7] 1 is a partially cross-sectional front view illustrating a drainage unit according to an embodiment of the present invention in an exploded state. [Figure 8] 1A is a plan view of a drain outlet according to an embodiment of the present invention, FIG. 1B is a bottom view of the drain outlet, and FIG. 1C is a cross-sectional view of the drain outlet. [Figure 9] 1A to 1C are diagrams of an inner trap member according to an embodiment of the present invention, where (A) to (C) are diagrams of a first inner trap member, (D) to (F) are diagrams of a second inner trap member, (A) and (D) are diagrams of a plan view, (B) and (E) are diagrams of a bottom view, and (C) and (F) are diagrams of a cross section. [Figure 10A] 1A and 1B are diagrams illustrating an outer trap member according to one embodiment of the present invention, in which FIG. 1A is a plan view and FIG. 1B is a longitudinal cross-sectional view of FIG. 1A. [Figure 10B] 1A is a diagram of a drain trap portion according to an embodiment of the present invention, in which (A) is a plan view, (B) is a bottom view, and (C) is a cross-sectional view. [Figure 11] FIG. 2 is a cross-sectional diagram illustrating a water flow according to an embodiment of the present invention. [Figure 12] FIG. 2 is a cross-sectional diagram illustrating a water sealing region according to an embodiment of the present invention. [Figure 13] FIG. 10 is a perspective view illustrating a tank body provided with a drainage unit according to a modified example of the first embodiment of the present invention. [Figure 14] FIG. 10 is a partially cross-sectional front view of a tank body system including a drainage unit according to a modified example of the first embodiment of the present invention. [Figure 15] FIG. 10 is a partially cross-sectional front view illustrating an exploded state of a tank body system including a drainage unit according to a modified example of the first embodiment of the present invention. [Figure 16] FIG. 10 is a partially cross-sectional front view illustrating an exploded state of a tank body system including a drainage unit according to a modified example of the first embodiment of the present invention. [Figure 17] FIG. 10 is a cross-sectional diagram of a tank body system including a drainage unit according to a second embodiment of the present invention. [Figure 18] FIG. 10 is a partially cross-sectional diagram of a tank body system including a drainage unit according to a second embodiment of the present invention. [Figure 19] FIG. 10 is an exploded perspective view of a tank body system including a drainage unit according to a second embodiment of the present invention. [Figure 20] FIG. 10 is a cross-sectional diagram showing a water flow in the second embodiment of the present invention. [Figure 21] FIG. 10 is a cross-sectional diagram showing a water sealing region of a second embodiment of the present invention. [Figure 22] FIG. 1 is a perspective view illustrating a method for installing a drainage unit according to a first embodiment of the present invention. [Figure 23A] FIG. 2 is a cross-sectional diagram illustrating a method for installing the drainage unit according to the first embodiment of the present invention. [Figure 23B] FIG. 2 is a cross-sectional diagram illustrating a method for installing the drainage unit according to the first embodiment of the present invention. [Figure 24] 1A and 1B are explanatory diagrams of a tank body system equipped with a drainage unit according to the present invention, in which (A) is a front cross-sectional diagram of a tank body system equipped with a drainage unit, and (B) is a perspective diagram. DETAILED DESCRIPTION OF THE INVENTION

[0009] (definition) In the following description, the directions are defined as follows in accordance with FIG. 24(A), which is a front cross-sectional view of the drainage unit, and FIG. 24(B), which is a perspective view. The side of the tank body, drain outlet, and drain trap that is seen from the front is called the front side (front side, front side), and the side opposite the front side is called the back side (rear side, rear side). When looking at the tank body, drain outlet, and drain trap from the front, the right side is called the right or right side, and when looking at the front, the left side is called the left or left side. Furthermore, when viewing the tank body, drain outlet section, and drain trap section from the front, the vertical direction is referred to as the up-down direction, and in the up-down direction, the upper side is referred to as the top or upper side, and the lower side is referred to as the bottom or lower side.

[0010] (Embodiment) The drainage unit 10 used in the faucet device according to the present invention is The device comprises a tank body 12, a drain outlet portion 14 disposed at the bottom of the tank body 12, and a drain trap portion 16, and the drain outlet portion 14 is disposed directly above the drain trap portion 16. As shown in FIG. 1, the tub body 12 is configured to be fixed near the bottom 82 of the vessel portion 80 to a base, for example, a top plate 310, of a washbasin / hand-washing facility 18 such as a vanity. The tub body 12 is stably attached to the washbasin / hand-washing fixture 18 by interposing the mounting member 130 between the vessel bottom 82 of the tub body 12 and the top plate 310 that forms the base.

[0011] As shown in Figure 1, the washbasin / hand-washing equipment 18 constitutes a tank body system equipped with a tank body 12, a drainage unit 10 including a drain outlet section 14 arranged at the bottom of the tank body 12, and a drain trap section 16, and the tank body system is equipped with a discharge device 300, a discharge device main body 302, a discharge outlet 304, and an operating section 306 that constitute a faucet device.

[0012] A part or the whole of the drain outlet portion 14 is in direct contact with the drain trap portion 16 . A part or the whole of the drain outlet portion 14 is fitted into the drain trap portion 16 .

[0013] By releasing the engagement between the drain outlet portion 14 and the drain trap portion 16, the tank body 12 can be separated from the drain trap portion 16, and the tank body 12 can be replaced.

[0014] The drain outlet portion 14 has a pipe body 90 attached between the tank body 12 and the drain trap portion 16, and an attachment member 100 for attaching the pipe body 90 to the tank body 12, and the tank body 12 to which the drain outlet portion 14 is attached is configured to be separable from the drain trap portion 16 together with the drain outlet portion 14.

[0015] The drain port 14 is detachably attached to a drain opening 84 formed in the vessel bottom 82 of the tank body 12 .

[0016] The drain trap portion 16 is detachably attached to the bottom of the tank body 12 . The drain trap section 16 has a water seal section 62 on the inside of its outer wall section, and is configured so that the drain outlet section 14 is arranged between the water seal section 62 and the tank body 12, and is configured so that a drain pipe is connected to the outer wall section 22, so that water flowing out from the water seal section 62 flows into the drain pipe via the drain section 60.

[0017] The tank body 12 is a washbasin or hand-washing basin that is detachably attached to a stand equipped with a discharge device, for example, a top plate 310, in the vicinity of the discharge device.

[0018] The construction method of the drainage unit 10 is a construction method of the drainage unit 10 including a tank body 12, a drain outlet portion 14 disposed at the bottom of the tank body 12, and a drain trap portion 16, a drain trap unit installation step of installing the drain trap unit 16 below the position where the tank body 12 is disposed near the faucet device; a drain port attachment step of attaching the drain port 14 to the lower part of the tank body 12; and a tank body mounting step of disposing the drain outlet portion 14 attached to the tank body 12 directly on the drain trap portion 16.

[0019] The step of attaching the tank body includes a method of attaching the drain outlet portion 14 so that a part or the whole of the drain outlet portion 14 is in direct contact with the drain trap portion 16. The tank body mounting step includes a method of fitting a part or the whole of the drain outlet portion 14 into the drain trap portion 16.

[0020] The step of attaching the drain outlet portion 14 includes a method of attaching an attachment member 100 for attaching to the tank body 12 to a pipe body 90 attached between the tank body 12 and the drain trap portion 16, and attaching the pipe body 90 to the tank body 12 using the attachment member 100.

[0021] (First embodiment) A drainage unit 10 according to a first embodiment of the present invention will be described mainly with reference to FIGS. (tank body) The tank body 12 is composed of a bowl or a bowl-shaped bowl that constitutes a washbasin or hand-washing basin. They are made of ceramic, plastic or metal. In this embodiment, the vessel portion 80 of the tank body 12 is circular in plan view. A flat circular drain opening 84 is formed through the center of the bottom 82 of the container.

[0022] (Drain trap part) The drain trap portion 16 includes an outer trap member 20 that forms the outer shell thereof, and an inner trap member 40 that is disposed inside the outer trap member 20. The drain trap portion 16 is configured so that a pipe body 90 that constitutes the drain port portion 14 is fitted inside the inner trap member 40.

[0023] The outer trap member 20 constituting the drain trap section 16 is connected to the cylindrical outer wall section 22 and the inner wall section 24 arranged inside the outer wall section 22 via the bottom 26 of the drain section formed at the bottom thereof, and the inner trap member 40 constituting the drain trap section 16 is connected to the cylindrical inner wall section 24 and the inner trap member 40 arranged inside the inner wall section 24 via the bottom 28 of the water sealing section formed at the bottom thereof.

[0024] The drain trap section 16 comprises a cylindrical drain section 60 connected to the lower part of the vessel bottom section 82 of the vessel section 80 of the tank body 12, a cylindrical water sealing section 62 formed within the tube of the drain section 60, and a bottom section that seals the lower parts of the drain section 60 and the water sealing section 62. The drainage section 60 and the water sealing section 62 are cylindrical, and the water sealing section 62 is configured such that the inner wall section 24, which is a cylindrical inner wall section with a circular cross section and which constitutes the water sealing section 62, is arranged inside the outermost cylindrical outer wall section 22, which is a cylindrical outer wall section with a circular cross section and which constitutes the water sealing section 62, at an appropriate interval, and a water sealing area 66 is formed inside the inner wall section 24.

[0025] As shown in Figures 4 and 10, the drain trap section 16 comprises a cylindrical drain section 60 arranged below the container section 80 of the tank body 12, and a cylindrical water sealing section 62 formed inside the drain section 60, and an outer cylindrical wall section 22 with an approximately circular cross section, and an inner cylindrical wall section 24 with an approximately circular cross section formed inside the outer wall section 22 with an appropriate gap between them. The inner wall portion 24 is formed lower than the outer wall portion 22, and is configured so that a space portion 64 is formed between the upper connecting portion 42 of the inner trap member 40 described later and the connecting portion 50 connecting the upper connecting portion 42 and the fitting cylindrical portion 46 described later.

[0026] The outer trap member 20 has a bottom 26 of the drainage section that forms the bottom formed on the inner lower side of the outer peripheral wall section 22 that forms the drainage section 60, and a bottom 28 of the water sealing section that forms the bottom formed on the inner lower side of the inner wall section 24 that forms the water sealing section 62. The bottom 26 of the drainage section and the bottom 28 of the water sealing section are connected, and the bottom 28 of the water sealing section is connected to the lower connecting section 44 of the inner trap member 40 described later, and the bottom is formed by a cap 112 that closes the opening of the lower connecting section 44 described later, and is configured to close the bottom of the drainage trap section 16.

[0027] As shown in Figures 3 and 9, the bottom 28 of the water seal section is formed on the underside of the cylindrical inner wall section 24 with a circular cross section that constitutes the water seal section 62, and a through hole 74 is drilled in the bottom 28 of the water seal section, which is an attachment hole for the lower connecting section 44 that constitutes the attachment section 72 of the (lower) inner trap member in order to attach the inner trap member 40. The peripheral wall of the through hole 74 constitutes an engaging portion that serves as a mounting portion for mounting the inner trap member 40 . The through-hole 74 of the mounting portion 72 of the (lower) inner trap member is formed so as to face a drain opening 84 formed in the vessel bottom 82 of the tank body 12 . The through hole 74 and drain opening 84 that constitute the mounting portion 72 of the (lower) inner trap member for mounting the drain outlet portion 14 are arranged concentrically with the center line X-X1 that passes through the centers of the tank body 12 and the drain trap portion 16 as their center, and are composed of holes that are approximately circular in plan view and have approximately the same shape.

[0028] The outer trap member 20 has a trap mounting portion 30, which is approximately annular in plan view, formed on the upper side of the cylindrical outer wall portion 22. The trap mounting portion 30 is formed in the shape of a flange that protrudes outward from the upper end of the outer wall portion 22, and is formed so that the vessel bottom portion 82 of the vessel portion 80 can be placed on top of it.

[0029] As shown in Figure 10, the outer trap member 20 has an (upper) inner trap member mounting portion 70 formed below the trap mounting portion 30, and also has a (lower) inner trap member mounting portion 72 connected to the inside of the bottom 28 of the water seal portion.

[0030] The mounting portion 70 of the (upper) inner trap member is formed by a vertical wall that is continuous with the wall portion of the outer peripheral wall portion 22 that constitutes the drainage portion 60. The mounting portion 72 of the (lower) inner trap member is formed by a vertical wall perpendicular to the bottom 28 of the water seal portion, and the aforementioned through hole 74 for mounting the lower connecting portion 44 of the inner trap member 40 is formed on the inside of the vertical wall.

[0031] As shown in Figures 3 and 9, the inner trap member 40 has an upper connecting portion 42 formed on the upper side of a fitting cylindrical portion 46 that constitutes a pipe mounting portion for mounting the pipe body 90, and a lower connecting portion 44 formed on the lower side of the fitting cylindrical portion 46. The fitting cylindrical portion 46 and the upper connecting portion 42 are connected, and the fitting cylindrical portion 46 and the lower connecting portion 44 are connected, and the lower connecting portion 44 is connected to the bottom 28 of the water sealing portion of the outer trap member 20.

[0032] The inner trap member 40 has a connecting portion 50 formed on the upper side of the fitting cylindrical portion 46, which protrudes horizontally outward from the upper end of the fitting cylindrical portion 46, and the upper connecting portion 42 is connected to its upper end, so that the bottom portion 82 of the container portion 80 can be placed on the upper connecting portion 42.

[0033] The upper connecting portion 42 is formed on the upper side of the annular connecting portion 50, The upper connecting portion 42 is roughly annular in plan view and is composed of a cylindrical vertical wall connected to a wall portion that constitutes the cylindrical fitting tube portion 46 having a roughly circular cross section via a connecting portion 50, and a recess is formed on its outer surface to fix the gasket 120. The lower connecting portion 44 is connected to a fitting tubular portion 46 having a generally cylindrical cross section, and has a tubular wall having a generally circular cross section, from which an engagement wall 52 is protruded, perpendicular to the fitting tubular portion 46.

[0034] The lower connecting portion 44 of the inner trap member 40 has a male thread formed on its peripheral wall, and a cap 112 is attached to the lower end thereof by screwing it through a packing 110 . The cap 112 constitutes the fitting cylindrical portion 46 of the inner trap member 40 and the bottom of the tube body 90 . Thus, the lower ends of the lower connecting portion 44 of the inner trap member 40 and the pipe body 90 are sealed by the cap 112, maintaining watertightness and forming the water sealing area 66 (second water sealing area 66b and third water sealing area 66c).

[0035] The inner trap member 40 has a connecting portion 50 formed above the fitting cylindrical portion 46, which connects the upper connecting portion 42 to the fitting cylindrical portion 46, and the connecting portion 50 projects outward from the upper end of the fitting cylindrical portion 46 and is formed across the drainage portion 60 and the water sealing portion 62. As described above, a space 64 is formed between the connecting portion 50 and the upper end of the inner wall portion 24.

[0036] The inner trap member 40 has a water passage opening 48 formed below the fitting cylindrical portion 46 . The water passage openings 48 are formed in one to four locations on the cylindrical wall of the fitting cylindrical portion 46 . The engagement wall 52 is formed below the water passage opening 48 .

[0037] In this embodiment, the inner trap member 40 is made up of an upper first inner trap member 40A and a lower second inner trap member 40B, as shown in FIGS. The first inner trap member 40A has a connecting portion 54a at the bottom of the fitting cylindrical portion 46 that connects to the second inner trap member 40B, and the second inner trap member 40B has a connecting portion 54b at the top of the fitting cylindrical portion 46 that connects to the first inner trap member 40A. The connecting portion 54a of the first inner trap member 40A is fitted into the connecting portion 54b of the second inner trap member 40B, with a packing 124 made of an O-ring or the like sandwiched therebetween to prevent liquid leakage.

[0038] The connecting portion 54a of the upper first inner trap member 40A is provided with an engaging protrusion that protrudes inward, and is configured so that a fitting member 58 is inserted and fitted into the upper portion of the engaging protrusion. The fitting member 58 is a cylindrical body with a circular cross section that is fitted between the outer peripheral wall surface of the pipe body 90 and the inner peripheral wall surface of the fitting cylindrical portion 46 of the inner trap member 40 . Between the connecting portion 54a of the first inner trap member 40A and the fitting member 58, a packing 122 made of an O-ring or the like is interposed to prevent liquid leakage.

[0039] In this embodiment, the second inner trap member 40B has a circular cross-sectional through hole formed in the fitting cylindrical portion 46 of the inner trap member for attaching the tube body 90, the diameter of which is slightly larger than the outer shape of the tube body 90.

[0040] In this embodiment, the second inner trap member 40B is formed so that the inner diameter of the region of the lower connecting portion 44, where the water passage opening 48 is formed, is slightly smaller than the inner diameter of the region of the fitting cylindrical portion 46 that fits with the pipe body 90. In other words, the inner diameter of the fitting cylindrical portion 46, which has a circular cross section, is slightly smaller than the inner diameter of the lower connecting portion 44, which also has a circular cross section.

[0041] In this embodiment, the second inner trap member 40B has a lower connecting portion 44 which forms an attachment portion for attaching the second inner trap member 40B to the (lower) inner trap member attachment portion 72 of the outer trap member 20, and an engagement wall 52 is protruded from the outside of the lower connecting portion 44.

[0042] The first inner trap member 40A is connected to the second inner trap member 40B in the following manner. The lower fitting cylindrical portion 46 of the first inner trap member 40A and the upper fitting cylindrical portion 46 of the second inner trap member 40B are connected by fitting the connecting portion 54a of the first inner trap member 40A into the connecting portion 54b of the second inner trap member 40B. A packing 124 is interposed between the fitting cylindrical portion 46 of the first inner trap member 40A and the fitting cylindrical portion 46 of the second inner trap member 40B to maintain watertightness.

[0043] The outer trap member 20 and the inner trap member 40 are connected as follows. The lower connecting portion 44 of the inner trap member 40 is fitted into the through hole 74 drilled in the mounting portion 72 of the (lower) inner trap member of the outer trap member 20, and the engagement wall 52 of the lower connecting portion 44 of the inner trap member 40 is engaged with the upper portion of the mounting portion 72 of the (lower) inner trap member. The lower connecting portion 44 of the inner trap member 40 is inserted into the through hole 74 of the mounting portion 72 of the (lower) inner trap member of the outer trap member 20 and protrudes downward from the lower end of the mounting portion 72 of the (lower) inner trap member. The inner trap member 40 is fixed to the outer trap member 20 by abutting a gasket 110 against the lower end of the (lower) inner trap member mounting portion 72 from below the outer trap member 20, and then screwing a cap 112 from below the gasket 110 onto the male thread portion formed on the outside of the lower connecting portion 44 of the inner trap member 40.

[0044] The outer trap member 20 that constitutes the drain trap section 16 is attached to the inner trap member 40 by fitting the inner trap member 40 inside the mounting portion 70 of the (upper) inner trap member and the mounting portion 72 of the (lower) inner trap member. The outer trap member 20 is fixed to the (upper) inner trap member mounting portion 70 of the outer trap member 20 and the upper connecting portion 42 of the inner trap member 40 with a gasket 120 interposed between the mounting portion 70 of the (upper) inner trap member and the upper connecting portion 42 of the inner trap member 40. In addition, the lower connecting portion 44 of the inner trap member 40 of the outer trap member 20 is inserted into the through hole 74 of the mounting portion 72 of the (lower) inner trap member, and a gasket 126 is interposed between the mounting portion 72 of the (lower) inner trap member of the outer trap member 20 and the lower connecting portion 44 of the inner trap member 40, thereby fixing the mounting portion 72 of the (lower) inner trap member of the outer trap member 20 and the lower connecting portion 44 of the inner trap member 40. A cap 112 is attached to the lower opening of the lower connecting portion 44 of the inner trap member 40 with a packing 110 interposed therebetween.

[0045] The drain trap section 16 is configured such that a drain pipe connection section 78 is arranged on the side of the outer wall section 22 that constitutes the drain section 60, and water flowing out of the water seal section 62 passes through the water passage 68 to the drain pipe connection section 78, and is then drained to the outside through a drain pipe 280 connected to the drain pipe connection section 78.

[0046] The water accumulated in the water seal portion 62 decreases due to pressure fluctuations and evaporation in the water passage in the drain trap portion 16. Therefore, the water seal depth (vertical distance from the wear to the dip) of the drain trap portion 16 is set to 50 mm or more and 100 mm or less.

[0047] In this embodiment of the present invention, the water sealing portion 62 of the drain trap portion 16 has a water sealing region 66 (first water sealing region 66a) formed inside the cylindrical inner wall portion 24 that constitutes the water sealing portion 62 and has a circular cross section. The pipe body 90 has a water sealing area 66 (second water sealing area 66b) formed in its lower part, i.e., in the area where it is fitted into the lower connecting portion 44 of the inner trap member 40, and a water sealing area 66 (third water sealing area 66c) formed in the area below the pipe body 90 and below the lower connecting portion 44 of the inner trap member 40. In this embodiment of the present invention, the water sealing area 66 (first water sealing area 66a) of the water sealing section 62 of the drain trap section 16, the water sealing area 66 (second water sealing area 66b) of the pipe body 90, and the water sealing area 66 (third water sealing area 66c) of the lower connecting section 44 of the inner trap member 40 are connected, and the water depth (between the upper part of the water sealing section 62 and the cap 112 (forming the bottom) of the water sealing section 62 that forms the water sealing area 66 (second water sealing area 66b and third water sealing area 66c) of the pipe body 90) is configured to be 50 mm or more and 100 mm or less. The drainage unit 10 of the first embodiment of the present invention is excellent in water sealing strength, that is, the ability of the drainage trap portion 16 to maintain a water seal when positive or negative pressure occurs in the drainage pipe.

[0048] A water passage 68 is formed in the space 64 above the edge of the water sealing section 62 on the connecting section 50 side. The water passage 68 formed in the space 64 is a water passage for guiding water that overflows from the water sealing section 62 to the water passage 68 formed inside the drainage section 60.

[0049] (Drain port) Next, the drain outlet 14 disposed in the tank body 12 will be described. The drain outlet portion 14 is disposed directly above the drain trap portion 16 as shown in FIGS. A part or the whole of the drain outlet portion 14 is fitted into the drain trap portion 16 so that a part or the whole of the drain outlet portion 14 is in direct contact with the drain trap portion 16 . The drain outlet portion 14 can be separated from the drain trap portion 16 by releasing the engagement between the drain outlet portion 14 and the drain trap portion 16. The drain outlet portion 14 is detachably attached to a drain opening 84 formed in the bottom of the tank body 12. Therefore, the tank body 12 can be replaced.

[0050] The drain outlet portion 14 has a pipe body 90 that is attached between the tank body 12 and the drain trap portion 16, and an attachment member 100 for attaching the pipe body 90 to the tank body 12, and the tank body 12 to which the drain outlet portion 14 is attached is configured to be separable from the drain trap portion 16 together with the drain outlet portion 14.

[0051] (Body) The pipe body 90 is a cylindrical body made of metal or resin, and is configured so that various drainage devices 150 such as drainage fittings can be loaded inside its tubular portion 92, and is configured to form a water passage for passing water flowing in from the drainage opening 84 in the container bottom 82 of the tank body 12, as well as to form a water sealing area 66 (second water sealing area 66b) that can store water flowing in from the container portion 80.

[0052] The pipe body 90 has a flange portion 94 at the upper end of the tubular portion 92 that extends outward and forms an attachment portion so that it can be engaged with the drainage opening 84.

[0053] The tube 90 has a male thread 96 formed on the outer circumferential surface of the cylindrical portion 92 thereof. The tube 90 is attached to the tank body 12 by a mounting member 100 for mounting the tube 90 to the vessel bottom 82 of the tank body 12 . The mounting member 100 is configured so that, from the bottom, a lock nut 108, a sliding gasket 106, a triangular gasket 104, and a sponge gasket 102 are positioned in predetermined positions, and the mounting member 100 is screwed or fitted onto the pipe body 90 to mount the pipe body 90 to the tank body 12.

[0054] The tube portion 92 of the tube body 90 is inserted into the through-hole of the sponge packing 102 , and the flange portion 94 at the upper end is engaged and fixed to the rim portion of the drain opening 84 of the tank body 12 . The upper part of the pipe body 90 is attached to the vessel bottom part 82 of the tank body 12 via a sponge packing 102 between the flange part 94 and the drain opening part 84 of the tank body 12 . The pipe body 90 is then fitted to the mounting recess around the drain opening 84 of the tank body 12, followed by a triangular gasket 104 and a sliding gasket 106, in that order. Next, a lock nut 108 is threaded onto the male thread 96 from below the sliding gasket 106, and the pipe body 90 is fixed to the vessel bottom 82 of the tank body 12.

[0055] The pipe body 90 is cylindrical with a generally circular cross section and a diameter slightly smaller than that of the fitting cylindrical portion 46 so that it can be fitted into the fitting cylindrical portion 46 of the inner trap member 40 below the mounting member 100 .

[0056] The pipe body 90 that constitutes the drain outlet portion 14 has an outer shape that corresponds to the inner shape of the pipe body 90 so that various drainage tools 150 can be attached between the drainage opening 84 of the tank body 12, which is formed at an appropriate interval, and the lower area arranged in the drainage trap portion 16.

[0057] The pipe body 90 attached to the drain trap portion 16 is formed into a cylindrical body having a shape corresponding to the outer shape of the various drain tools 150 so that the various drain tools 150 can be attached to the internal space of the pipe.

[0058] (drainage equipment) A drainage tool 150 is attached to the inside of the opening of the pipe 90 attached to the drain outlet 14 of the tank body 12.

[0059] In this embodiment, the drain device 150 is attached to the drain outlet portion 14 of the tank body 12 and the tubular portion 92 of the pipe body 90, as shown in Figures 3 and 5, and is configured to guide water flowing in from the tubular portion 92 on the drain outlet portion 14 side of the tank body 12 to the water sealing portion 62 via the drain device 150.

[0060] The pipe body 90 attached to the drain port portion 14 of the tank body 12 has a drain tool 150 attached to the inside of the opening of the cylindrical portion 92 thereof.

[0061] The drain outlet portion 14 of the tank body 12 and the drainage device 150 attached to the inside of the tube body 90 are configured to form a water passage that directs water flowing in from the container portion 80 of the tank body 12 through the drainage device 150 to the water sealing portion 62.

[0062] The drainage tool 150 has a cover 152 capable of covering the drain outlet 14 and a base 154 hanging down from the center of the cover 152 . The base 154 has a disk-shaped packing 164 on its upper side for fitting the drainage tool 150 into the drainage opening 14 of the tub body 12 . The packing 164 is formed in a ring shape from an elastically deformable material such as rubber or resin. and is attached to the outer periphery of the base 154 at the bottom of the cover 152.

[0063] In this embodiment, the drain device 150 is in a draining position in which the cover body 152 is separated from the top of the pipe body 90, allowing water to be drained through the drain device 150, and is also in a plugging position in which it is fitted into an area near the drain outlet portion 14 at the top of the pipe body 90.

[0064] The drainage device 150 is configured so that when the cover body 152 is positioned above and away from the drainage outlet portion 14 of the tank body 12, an opening 158 is formed between the cover body 152 and the drainage outlet portion 14 of the tank body 12.

[0065] A foreign object removal section 166 made up of a dust net or the like is attached to the lower part of the base section 154. The base 154 is attached to the inside of the tubular portion 92 of the tubular body 90 by an appropriate fixing structure. The drainage tool 150 may also be attached to the tubular body 90 by fixing the foreign body removal part 166 to the inside of the tubular portion 92 of the tubular body 90.

[0066] In this embodiment, the drain device 150 is provided with a pop-up mechanism so that it can take a drain position in which drainage is possible through the opening 158 and a plug position in which drainage through the opening 158 is prohibited. The pop-up mechanism has a spring function provided by a spring member or the like arranged inside the base 154, and is configured so that when the cover body 152 is pressed, the gasket 164 is fitted and fixed inside the tubular portion 92 of the tube body 90, and when the cover body 152 in this fitted state is pressed again, the cover body 152 is raised upward.

[0067] As shown in FIG. 1, the tub body 12 is configured to be fixed near the bottom 82 of the vessel portion 80 to a base, for example, a top plate 310, of a washbasin / hand-washing facility 18 such as a vanity. The tub body 12 is stably attached to the washbasin / hand-washing fixture 18 by interposing the mounting member 130 between the vessel bottom 82 of the tub body 12 and the top plate 310 that forms the base. As shown in FIG. 1, the washbasin / hand-washing facility 18 includes a discharge device 300, a discharge device main body 302, a discharge port 304, and an operating unit 306, which constitute a faucet device.

[0068] (Modification of the first embodiment) Next, a drainage unit 10, which is a modification of the first embodiment, will be described with reference to the drawings. The explanation will be based on 13 to 16. The modified tank body 12 is characterized in that it is configured to be fixed onto the base of a washbasin / hand-washing facility 18 such as a vanity unit via a cylindrical container support part 86 with a circular cross section that supports the container part 80 of the tank body 12.

[0069] In addition, in describing the drainage unit 10, which is a modified example of the first embodiment, the same components and elements as those of the drainage unit 10 of the first embodiment shown in Figures 2 to 12 will be given the same symbols, and descriptions of the common components and elements will be omitted. The following description will focus on the characteristic constituent elements and components of the drainage unit 10, which is a modification of the first embodiment.

[0070] The vessel support portion 86 is connected to the vessel bottom portion 82 of the tank body 12, and a recess portion 86a for inserting the drain pipe 280 is drilled in the area opposite the drain pipe connection portion 78 formed on the outer wall portion 22 of the outer trap member 20 that constitutes the drain trap portion 16.

[0071] The tub body 12 is configured to be fixed to a base, for example, a top plate 310, of a washbasin / hand-washing facility 18 such as a vanity table via a vessel support part 86 that supports the vessel bottom part 82 thereof.

[0072] In the drainage unit 10 of this modification, the container portion 80 and the container bottom portion 82 have the same configuration as the container portion 80 and the container bottom portion 82 in the first embodiment. Moreover, the drain trap portion 16 and the pipe body 90 have the same configuration as the drain trap portion 16 and the pipe body 90 in the first embodiment. The structure for attaching the tube body 90 to the vessel bottom portion 82 by the attachment member 100 is also the same as that of the first embodiment.

[0073] (Second embodiment) Next, a drainage unit 10 according to a second embodiment of the present invention will be described with reference to FIGS.

[0074] The drainage unit 10 of the second embodiment is characterized in that the drainage tool 150 is connected to the drive member 202 of the drainage device (drainage pipe unit) 200 via an attachment portion 156. In the drainage unit 10 of the second embodiment, the drain outlet portion 14 and the drain trap portion 16 have the same configurations as the drain outlet portion 14 and the drain trap portion 16 of the first embodiment.

[0075] In addition, in describing the drainage unit 10 of the second embodiment, the components and elements common to the drainage unit 10 of the first embodiment shown in Figures 2 to 12 will be given the same symbols, and descriptions of the common components and elements will be omitted. The following mainly describes the characteristic components and elements of the drainage unit 10 according to the second embodiment. Reveal.

[0076] In the drainage unit 10 of the second embodiment, the container portion 80 and the container bottom portion 82 have the same configuration as the container portion 80 and the container bottom portion 82 in the first embodiment. Furthermore, the drain outlet portion 14, the drain trap portion 16 and the pipe body 90 have the same configuration as the drain outlet portion 14, the drain trap portion 16 and the pipe body 90 in the first embodiment. The structure for attaching the tube body 90 to the vessel bottom portion 82 by the attachment member 100 is also the same as that of the first embodiment. The mounting member 100 is composed of, from the bottom up, a lock nut 108, a sliding packing 106, a triangular packing 104, a sponge packing 102, a packing 110, and a cap 112 (forming the bottom).

[0077] The inner trap member 40 is connected to the drive member mounting portion 212 by threading the male thread formed on the outer periphery of the lower connecting portion 44 into the female thread in the opening at the top of the drive member mounting portion 212. The drive member mounting portion 212 has a space inside for mounting the transmission member 210 and the mounting portion 156 of the drainage tool 150 . A cap 112 that forms the bottom is attached to the opening at the lower end of the drive member attachment portion 212 via a packing 110 . In the second embodiment, a third water sealing region 66c is formed between the drive member mounting portion 212 and the second inner trap member 40B that constitutes the inner trap member 40.

[0078] A drainage device 150 according to a second embodiment of the present invention will now be described with reference to FIGS. The drainage device 150 of this second embodiment differs in that, whereas the drainage unit 10 of the first embodiment operates between a drainage position in which drainage is possible and a plugged position by a pop-up function provided in the drainage device 150, the drainage device 150 of this second embodiment is configured to be operable between a drainage position in which drainage is possible through the drainage opening 84 and a plugged position in which drainage through the drainage opening 84 is prohibited by a drainage device (drainage pipe unit) 200 separate from the drainage device 150, and is formed so as to be freely insertable and detachable into the drainage opening 84.

[0079] The drainage tool 150 has a base 154 attached to the bottom of a cover 152, and a guide 160 for rectifying the water flow attached around the periphery of the base 154. The guide portion 160 is a wing-shaped plate that extends from the upper end to the lower end of the base portion 154 .

[0080] The drainage tool 150 constituting the drainage device (drainage pipe unit) 200 has a structure that can move up and down to open and close the drainage opening 84. The drainage device (drainage pipe unit) 200 includes a drive member 202 having a function of moving the cover 152 of the drainage tool 150 arranged inside the tube of the pipe body 90 up and down. The driving member 202 is cylindrical and has a structure for being attached to a mounting portion 156 that protrudes from the lower part of the base 154 that extends downward inside the pipe 90 from the cover 152 side of the drainage device 150.

[0081] The mounting portion 156 is connected to a transmission member 210 that reciprocates in response to the displacement of the operating member 208 , and to the driving member 202 . The attachment portion 156 moves up and down as the transmission member 210 reciprocates in response to the displacement of the operating member 208 . The drain tool 150 is a unit for opening and closing the drain opening 84, and is configured to be installable inside the pipe 90 from above the pipe 90, and to be removable from the pipe 90. In this second embodiment, the drainage device 150 can be placed on the pipe body 90 by inserting the drainage device 150 from above the pipe body 90, and the cover body 152 can be removed from the pipe body 90 by pulling the cover body 152 up toward the top of the pipe body 90.

[0082] The drainage fitting 150 that constitutes the drainage device (drainage pipe unit) 200 comprises a cover body 152 that constitutes a disc-shaped blind plate made of metal, resin, etc., and a gasket 164 attached to the lower part of the cover body 152 that constitutes the drain outlet plug. The packing 164 is formed in an annular shape from an elastically deformable material, such as rubber or resin, and is attached to the outer periphery of the base 154 at the bottom of the cover 152 .

[0083] Then, as the operating member 208 is displaced, the transmission member 210 moves forward, the mounting portion 156 moves upward, the drain device 150 moves upward, and the gasket 164 moves away from the pipe body 90, thereby releasing the cover body 152 of the drain device 150 from the pipe body 90. Meanwhile, as the operating member 208 is displaced, the transmission member 210 moves back, the mounting portion 156 moves downward, the drainage device 150 moves downward, and the entire outer periphery of the gasket 164 of the cover body 152 comes into contact with the inside of the tube body 90, thereby closing the drainage opening 84.

[0084] (How to install the drainage unit) Next, a method for installing the drainage unit 10 according to the present invention will be described. As shown in Figures 22 and 23, the construction method of the drainage unit 10 is a construction method of the drainage unit 10 including a tank body 12, a drain outlet portion 14 disposed at the bottom of the tank body 12, and a drain trap portion 16, a drain trap installation step (S1) of installing the drain trap unit 16 below the position where the tank body 12 is disposed near the faucet device; a drain outlet attachment step (S2) of attaching the drain outlet 14 to the lower part of the tank body 12; and a tank body mounting step (S3) of disposing the drain outlet portion 14 mounted on the tank body 12 directly on the drain trap portion 16.

[0085] The step (S3) of attaching the tank body 12 includes a method of attaching the drain outlet portion 14 so that a part or the whole of the drain trap portion 16 is in direct contact with the drain outlet portion 14.

[0086] The step (S3) of attaching the tank body 12 includes a method of fitting a part or the whole of the drain outlet portion 14 into the drain trap portion 16.

[0087] The installation step (S2) of the drain outlet portion 14 includes a method of attaching an attachment member 100 for attaching to the tank body 12 to a pipe body 90 installed between the tank body 12 and the drain trap portion 16, and attaching the pipe body 90 to the tank body 12 using the attachment member 100.

[0088] The installation step (S3) of the tank body 12 includes a process in which a pipe body 90 to be installed between the tank body 12 and the drain trap section 16 is installed using an installation member 100 for installation on the tank body 12, an installation jig 250 is inserted into the fitting tube portion 46 of the inner trap member 40 of the already installed drain trap section 16, the installation jig 250 is stood upright, the pipe body 90 is inserted outside the tube of the installation jig 250, and gradually lowered along the installation jig 250 to settle the pipe body 90 in a predetermined location, and then the installation jig 250 is removed from the pipe body 90.

[0089] Next, the construction method will be described more specifically mainly with reference to FIGS.

[0090] (Drain trap installation steps) The inner trap member 40 is fitted inside the (upper) inner trap member mounting portion 70 and the (lower) inner trap member mounting portion 72 of the outer trap member 20 that constitutes the drain trap section 16, thereby attaching the inner trap member 40 to the outer trap member 20. At this time, a packing 120 is interposed between the mounting portion 70 of the (upper) inner trap member of the outer trap member 20 and the upper connecting portion 42 of the inner trap member 40, thereby fixing the mounting portion 70 of the (upper) inner trap member of the outer trap member 20 to the upper connecting portion 42 of the inner trap member 40. In addition, the lower connecting portion 44 of the inner trap member 40 is inserted into the through-hole 74 of the mounting portion 72 of the (lower) inner trap member of the outer trap member 20, and a packing 126 is interposed between the mounting portion 72 of the (lower) inner trap member of the outer trap member 20 and the lower connecting portion 44 of the inner trap member 40, thereby fixing the mounting portion 72 of the (lower) inner trap member of the outer trap member 20 to the lower connecting portion 44 of the inner trap member 40.

[0091] Next, the cap 112 is attached to the lower opening of the lower connecting portion 44 of the inner trap member 40 with the packing 110 interposed therebetween.

[0092] Next, the drain trap portion 16 is fixed to the installation location by interposing the leg members 140 between the bottom 26 of the drain portion and / or the bottom 28 of the water seal portion of the outer trap member 20 and the installation location. The location where the drain trap unit 16 is installed may be, for example, below the top plate 310 of the washbasin / hand-washing facility 18, on a stand or the like that has a flat surface suitable for installing the drain trap unit 16. Next, a drain pipe or drain tube 280 is connected to the drain pipe connection portion 78 of the outer trap member 20 with a gasket 204 interposed therebetween and a drain pipe fitting 242 .

[0093] Next, the mounting member 130 is placed over the outside of the trap mounting portion 30 of the outer trap member 20, and the mounting member 130 is placed on the top plate 310 of the bathroom / hand washing facility 18, for example. If the mounting member 130 has a recessed portion formed therein into which the lower portion of the container portion 80 of the tank body 12 can be fitted, the tank body 12 can be stably fixed.

[0094] (Drain outlet installation steps) Meanwhile, the pipe body 90 is inserted into the tubular portion 92 of the vessel portion 80 of the tank body 12 from the vessel portion 80 side, with a sponge packing 102 interposed therebetween, and a triangular packing 104 is inserted into the rim of the drainage opening 84 from the underside of the vessel bottom 82 of the tank body 12, with a sliding packing 106 interposed therebetween, and a lock nut 108 is screwed onto the male thread 96 of the pipe body 90 to fix the pipe body 90 to the tank body 12. This completes the process of attaching the drain outlet portion 14 to the tank body 12.

[0095] (Tank body installation step) Next, as shown in Figure 23, the construction jig 250 is inserted into the fitting tube portion 46 of the inner trap member 40 of the drain trap section 16 that has already been installed, and is stood upright facing upward. The pipe body 90 is then inserted outside the pipe of the construction jig 250 and gradually lowered along the construction jig 250 until the pipe body 90 settles in the designated location. Thereafter, the construction jig 250 is removed from the pipe body 90. This completes the process of attaching the tank body 12 and the drain outlet portion 14 to the drain trap portion 16. The construction jig 250 is a cylindrical body made of plastic or metal, and has a shape, for example, a circular cross section, that conforms to the inner shape of the pipe 90 so that the pipe 90 can be inserted into the outside of the construction jig 250.

[0096] As described above, the embodiment of the present invention has been disclosed in the above description, but the present invention is not limited thereto. In other words, various modifications can be made to the above-described embodiments in terms of mechanism, shape, material, quantity, position, arrangement, etc. without departing from the scope of the technical idea and purpose of the present invention, and these modifications are included in the present invention.

[0097] For example, the drain outlet portion 14 and the drain trap portion 16 may be rectangular tubular instead of cylindrical as in the above embodiment. [Explanation of symbols]

[0098] 10 drainage unit, 12 tank body, 14 drain outlet section, 16 drainage trap section, 18 Washroom and hand-washing facilities 20 outer trap member, 22 outer peripheral wall portion, 24 inner wall portion, 26 Bottom of drainage section, 28 Bottom of water seal section, 30 Trap mounting section 40 inner trap member, 40A: First inner trap member; 40B: Second inner trap member; 42 upper connecting portion, 44 lower connecting portion, 46 fitting tube portion, 48 water passage opening, 50 connecting portion, 52 engaging wall, 54a connecting portion, 54b connecting portion, 58 Fitting member 60 Drainage section, 62 Sealing section, 64 Space section, 66 Sealed area (66a, 66b, 66c), 68 Canal 70 (Upper) inner trap member mounting part 72 (lower) inner trap member mounting portion, 74 through hole 78 Drain pipe connection 80 vessel portion, 82 vessel bottom portion, 84 drain opening, 86 vessel support portion, 86a recess portion 90 Tube body, 92 Cylinder portion, 94 Flange portion, 96 Male thread 100 Mounting material, 102 Sponge packing, 104 Triangular packing, 106 Sliding packing, 108 Lock nut, 110 Packing, 112 Cap, 120 Gasket, 122 Gasket, 124 Packing, 126 Packing 130 mounting member, 140 leg member 150 drainage device, 152 cover body, 154 base, 156 Mounting part, 158 Opening, 160 guide portion, 164 packing, 166 foreign matter removal portion 200 Drainage device (drainage pipe unit), 202 Driving member, 208 operating member, 210 transmission member, 212 drive member mounting portion 240 Packing, 242 Water pipe fittings, 250 Construction jig 280 Drain pipe 300 Discharge device, 302 Discharge device main body, 304 Discharge port, 306 Operation section, 310 Top plate

Claims

1. A drainage unit used in a water faucet device, The apparatus comprises a tank body, a drain outlet portion disposed at a lower portion of the tank body, and a drain trap portion, The drain outlet portion includes a pipe body attached between the tank body and the drain trap portion, and and a mounting member for mounting the pipe body to the tank body, The tank body to which the drain outlet portion is attached is connected to the drain trap portion together with the drain outlet portion. configured to be separable from the The drain outlet portion is disposed directly above the drain trap portion, The drain trap portion is composed of an outer trap member and a The inner trap member has a water sealing portion and a drainage portion on the inside of the outer peripheral wall portion thereof, The drain outlet is disposed between the water sealing portion and the tank body, and the outer The peripheral wall is configured to be connected to a drain pipe, and the water flowing out from the water sealing portion is The water is configured to flow into the drain pipe through a drainage section, The bottom of the drainage section and the bottom of the water sealing section are connected, and the bottom of the water sealing section is connected to the drainage The wrap portion is connected to the lower connecting portion of the inner trap member, and the opening of the lower connecting portion and a cap that closes the drain trap portion to form the bottom of the drain trap portion. The drainage unit is configured to block the

2. 2. The method according to claim 1, wherein a part or all of the drain outlet portion is in direct contact with the drain trap portion. The drainage unit described.

3. 10. The method according to claim 1, wherein a part or all of the drain outlet portion is fitted into the drain trap portion.

3. The drainage unit according to claim 2.

4. By releasing the engagement between the drain outlet portion and the drain trap portion, the tank body 4. The drainage system according to claim 3, wherein the drainage trap is separable from the drainage trap, and the tank body is replaceable. Water unit.

5. The drain outlet portion is detachably attached to a drain opening formed in the bottom of the tank body.

5. The drainage unit according to claim 1, wherein the drainage unit is provided with a drainage pipe.

6. The drain trap portion is detachably attached to the bottom of the tank body, as claimed in claim 1 6. A drainage unit according to any one of claims 1 to 5.

7. A drainage unit used in a water faucet device, The apparatus comprises a tank body, a drain outlet portion disposed at a lower portion of the tank body, and a drain trap portion, The drain outlet portion includes a pipe body attached between the tank body and the drain trap portion, and and a mounting member for mounting the pipe body to the tank body, The tank body to which the drain outlet portion is attached is connected to the drain trap portion together with the drain outlet portion. configured to be separable from the The drain outlet portion is disposed directly above the drain trap portion, The drain trap portion is made up of an outer trap member constituting an outer shell and an inner trap member of the outer trap member. an inner trap member disposed on the side of the tank body; and an inner trap member disposed on the inner side of the outer peripheral wall portion connected to the lower portion of the tank body. and a water sealing portion formed within the drainage portion, The drain outlet is disposed between the tank body and the inner trap. The outer wall portion is configured so that a pipe body constituting the drain port portion fits inside the material, and A drain pipe is connected to the water seal, and the water flowing out of the water seal passes through the drain pipe and is It is designed to flow into the drain, The outer trap member includes an outer peripheral wall portion and an inner peripheral wall portion disposed inside the outer peripheral wall portion. is connected to the bottom of the drainage section formed at the lower part thereof, and is disposed inside the inner peripheral wall section. The inner trap member is connected to the bottom of the water sealing portion formed below the inner trap member. The bottom of the drainage section and the bottom of the water sealing section are connected to the inner trap member. The drain trap portion is configured to close the bottom of the drain trap portion together with the bottom of the inner trap member. , drainage unit.

Images