Drainage device

Abstract

To provide a drainage device which is equipped with a drain trap part and can be easily connected to a drain pipe provided on a skeleton side.SOLUTION: The drainage device 3 includes a water discharge trap 4 attached to a lower part of a sink 2, a water discharge joint 61 connected to the water discharge trap 4 and through which water from the water discharge trap 4 flows, an intermediate connecting part 9 rotatably attached to a lower part of the water discharge joint 61, the intermediate connecting part 9 including an upper connecting part 81 rotatably attached to the water discharge joint 61 and a lower connecting part 92 disposed at a position laterally shifted from the upper connecting part 81 and connected to a downstream side of the upper connecting part 81, and a drain pipe connecting part 8 rotatably attached to the lower connecting part 92 and connectable to a drain pipe 13 provided on a frame 12 side.SELECTED DRAWING: Figure 14

Description

[Technical Field]

[0001] The present disclosure relates to a drainage device. [Background technology]

[0002] Conventionally, a structure has been known in which a drain device equipped with a drain trap is installed below a kitchen sink by connecting it via a drain joint to a drain pipe installed on the frame side such as the floor (see, for example, Patent Document 1). When installing a drain device below the sink, drain joints of multiple sizes are prepared depending on the installation space below the sink and the position of the drain pipe fixed to the frame side. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent Publication No. 2021-32001 Summary of the Invention [Problem to be solved by the invention]

[0004] However, preparing drain joints of various sizes to connect the drain device to the drain pipe installed on the building body side is cumbersome. Therefore, it is desirable that the drain device equipped with a drain trap unit can be easily connected to the drain pipe installed on the building body side.

[0005] The present disclosure aims to provide a drainage device that has a drain trap portion and can be easily connected to a drainage pipe provided on the body side. [Means for solving the problem]

[0006] The present disclosure relates to a drainage device comprising: a drain trap portion attached to the bottom of a sink; a drain joint portion connected to the drain trap portion and through which water from the drain trap portion flows; an intermediate connection portion rotatably attached to the bottom of the drain joint portion, the intermediate connection portion having an upper connection portion rotatably attached to the drain joint portion and a lower connection portion positioned laterally offset from the upper connection portion and connected downstream of the upper connection portion; and a drainage pipe connection portion rotatably attached to the lower connection portion and connectable to a drainage pipe provided on the main body side. [Brief explanation of the drawings]

[0007] [Figure 1] FIG. 2 is a perspective view of the sink cabinet of the first embodiment, seen from diagonally above the front side. [Figure 2] FIG. 2 is a perspective view of the sink cabinet of the first embodiment, seen from diagonally above the rear side. [Figure 3] FIG. 1 is a perspective view showing a drainage device attached to the bottom of a sink. [Figure 4] 2 is a perspective view showing the configuration of the water storage mechanism of the drainage device, mainly showing the configuration of the water stop valve. FIG. [Figure 5] FIG. 4 is a cross-sectional view taken along line AA in FIG. [Figure 6] 6 is a perspective view showing a state in which the water stop valve of the water storage mechanism is raised from the state shown in FIG. 5. FIG. [Figure 7] FIG. 5 is a cross-sectional view taken along line BB in FIG. 4. [Figure 8] FIG. 2 is a diagram showing the drainage device as seen from below, illustrating a first arrangement example in which the drain trap section and the downstream drain section are rotated to arbitrary rotation positions. [Figure 9] FIG. 10 is a view of the drainage device as seen from below, showing a second arrangement example in which the drain trap section and the downstream drain section are rotated to arbitrary rotation positions. [Figure 10A] This is an oblique view showing a state in which the upper end of the drain pipe is positioned below the intake portion of the downstream drain section of the drainage device when connecting the downstream drain section to a drain pipe rising from the main body side. [Figure 10B] 10B is a cross-sectional view taken along line CC in FIG. 10A. [Figure 11A] This is an oblique view showing the state in which the upper end of the drain pipe is swallowed into the swallowing portion of the downstream drain section when connecting the downstream drain section of the drainage device to a drain pipe rising from the main body side. [Figure 11B] FIG. 11B is a cross-sectional view taken along line DD in FIG. 11A. [Figure 12] FIG. 2 is a functional block diagram of the drainage device. [Figure 13] FIG. 10 is a perspective view showing a drainage device of a second embodiment as viewed obliquely from above. [Figure 14] FIG. 10 is a perspective view showing the drainage device of the second embodiment as viewed obliquely from below. [Figure 15] FIG. 14 is a cross-sectional view taken along the line EE in FIG. [Figure 16] FIG. 10 is a perspective view showing an extension portion of a drainage device according to a second embodiment. [Figure 17] FIG. 10 is a diagram showing the drainage device of the second embodiment as seen from below, illustrating a third arrangement example in which the extension portion is rotated to an arbitrary rotation position. [Figure 18] FIG. 10 is a view of the drainage device of the second embodiment as seen from below, showing a fourth arrangement example in which the extension portion is rotated to an arbitrary rotation position. [Figure 19] FIG. 10 is a perspective view showing a drainage device according to a third embodiment. [Figure 20] FIG. 20 is a cross-sectional view taken along the line FF in FIG. 19. DETAILED DESCRIPTION OF THE INVENTION

[0008] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the drawings. A sink cabinet 10 according to a first embodiment will be described. The sink cabinet 10 constitutes a sink in which a sink 2 is provided, and is installed in a kitchen.

[0009] As shown in Figures 1 and 2, sink cabinet 10 includes a box-shaped cabinet 1, a sink 2, and a drainage device 3. A drainage pipe 13 (see Figure 2) rising from the side of a frame 12 such as a floor is disposed below sink cabinet 10. Drainage pipe 13 is fixed to the side of frame 12 such as a floor.

[0010] The sink 2 is provided on the upper part of the cabinet 1. A counter part 11 is provided on the upper surface of the cabinet 1 in a portion where the sink 2 is not provided. A drainage device 3 is connected to the lower part of the sink 2, as shown in FIGS. 1 to 4.

[0011] Sink 2 is used as a kitchen sink. Sink 2 has water receiving portion 21 formed in a concave shape that opens upward, and water discharge portion 22 formed below water receiving portion 21. Water receiving portion 21 receives water supplied from a faucet (not shown). As shown in FIG. 5, a step portion 23 is formed at the top of water discharge portion 22. A sink discharge outlet 27 is provided at the bottom end of water discharge portion 22.

[0012] Sink outlet 27 is formed in the shape of a short cylinder that opens downward. Sink outlet 27 constitutes a drain outlet for sink 2 and is formed to open at the bottom of sink 2. Although FIG. 1 shows a state in which a faucet is not attached to sink 2, a faucet (not shown) is attached to faucet attachment hole 26 formed in the upper part of sink 2.

[0013] As shown in Figure 5, trash basket 24 is disposed below step 23 in water outlet 22 of sink 2. A cover plate 25 that hides trash basket 24 is disposed above trash basket 24. Trash basket 24 is formed in a mesh shape (net shape) that is water permeable. Trash basket 24 is disposed so as to be detachable from water outlet 22.

[0014] When washing dishes, trash basket 24 captures food scraps and other garbage that flows together with water from water receiving portion 21 into water outlet portion 22. The trash basket 24 located near water outlet portion 22 of sink 2 or the trash basket 24 located near water outlet portion 22 of sink 2 becomes soiled with slime and other dirt caused by food scraps and other garbage.

[0015] As shown in Figures 1 and 2, the drainage device 3 is disposed inside the cabinet 1. As shown in Figures 3 to 5, the drainage device 3 includes a drain trap section 4, a water storage and flushing device 5, and a downstream drain section 8 (drainage pipe connection section).

[0016] The drain trap portion 4 is rotatably attached and connected to the bottom of the sink 2. The drain trap portion 4 is configured to receive drainage water discharged from the sink 2. The drain trap portion 4 includes a trap portion 41 and an upper inclined drain pipe portion 42.

[0017] As shown in Figure 5, trap section 41 is provided below water discharge section 22 of sink 2. Trap section 41 has a cylindrical outer cylinder 411 with a bottom that extends vertically, and a cylindrical inner cylinder 412 that is disposed inside outer cylinder 411, has an open lower end, and extends vertically. Outer cylinder 411 is rotatably attached to sink discharge port 27 of water discharge section 22 of sink 2. Lower end 412a of inner cylinder 412 is disposed at a predetermined distance above bottom 411a of outer cylinder 411.

[0018] An upper side drain port 411b that opens to the side is formed on the side of the upper side of the outer cylinder 411. An upper inclined drain pipe section 42 is connected to the upper side drain port 411b in a state inclined obliquely downward, and is connected to the upper side drain port 411b. The upper side drain port 411b is provided at a position higher than the lower end 412a of the inner cylinder 412.

[0019] The internal space of the inner cylinder 412 and the space between the inner cylinder 412 and the outer cylinder 411 are connected in a gap between the lower end 412a of the inner cylinder 412 and the bottom 411a of the outer cylinder 411. In the lower part of the trap section 41, the part including the part that is connected in the gap between the lower end 412a of the inner cylinder 412 and the bottom 411a of the outer cylinder 411, and the part ranging from the bottom 411a of the outer cylinder 411 to the lowest part 411c of the upper side drain port 411b formed on the side of the upper side of the outer cylinder 411, constitutes the water sealing section 414.

[0020] The water seal section 414 stores the wastewater discharged from the sink 2 as seal water midway through the drainage flow path of the drainage device 3, blocking the drainage flow path within the drainage device 3 with the seal water and preventing odors, pests, etc. from entering the sink 2 from the sewer pipe or the like to which the wastewater is discharged. The wastewater discharged from the sink 2 flows into the water seal section 414 of the trap section 41, and the seal water stored in the water seal section 414 and the flowing wastewater are stored as seal water. When the water flows into the water seal section 414 and exceeds the lowest part 411c of the upper side drain outlet 411b, the seal water stored in the water seal section 414 flows out through the upper inclined drain pipe section 42 into the inclined introduction pipe 611 of the joint pipe section 61 (described later) of the water storage mechanism section 6.

[0021] The stored water cleaning device 5 is disposed to the side of the drain trap section 4 and connected to the upper inclined drain pipe section 42 of the drain trap section 4. The stored water cleaning device 5 temporarily stores sterilized water up to the height of the step section 23 of the water discharge section 22 provided at the bottom of the sink 2, and cleans the water discharge section 22 of the sink 2 and the trash basket 24 placed in the water discharge section 22. The stored water cleaning device 5 includes a water storage mechanism section 6.

[0022] As shown in Figure 3, the water storage mechanism 6 has a joint pipe 61 (drain joint) connected to the lower end of the upper inclined drain pipe 42 of the drain trap 4. The joint pipe 61 is connected to the drain trap 4 at the upper inclined drain pipe 42 provided on the side of the upper side of the drain trap 4. Water from the drain trap 4 flows through the joint pipe 61.

[0023] The joint pipe section 61 is configured in an elbow shape and includes an inclined inlet pipe 611 that slopes downward from the lower end of the upper inclined drain pipe section 42 of the drain trap section 4, an up-and-down extension pipe 612 that extends upward from the lower end of the inclined inlet pipe 611, and a lower end discharge pipe 613 that is connected to the lower end of the inclined inlet pipe 611 and the lower end of the up-and-down extension pipe 612.

[0024] A U-shaped upper end cover 62 that opens downward is attached to the upper end of the vertically extending pipe 612. A water stop opening 614 that opens downward is formed at the lower end of the vertically extending pipe 612, as shown in Fig. 5. The lower end discharge pipe 613 is formed in a cylindrical shape that extends downward for a predetermined distance from the lower end of the inclined introduction pipe 611 and the lower end of the vertically extending pipe 612, with a diameter larger than the water stop opening 614, and extends to a position below the water stop opening 614.

[0025] 5, the water storage mechanism 6 has a water storage section 65, a water stop valve mechanism 66, an overflow wall 67, and an overflow flow path 68. The water storage section 65 is a section that stores water inside the joint pipe section 61 of the water storage mechanism 6. A water stop opening 614 (opening) is formed at the lower end of the water storage section 65.

[0026] The water storage section 65 is made up of the inside of the inclined introduction pipe 611 of the joint pipe section 61 and the part of the joint pipe section 61 on the inclined introduction pipe 611 side inside the vertically extending pipe 612. The water storage section 65 is arranged downstream of the drain trap section 4, and can temporarily store water flowing from the drain trap section 4 by opening and closing a water stop opening 614 provided at the lower end.

[0027] A water stop valve 661 of the water stop valve mechanism 66 is arranged below the water stop opening 614 provided at the lower end of the water storage section 65. The water stop valve mechanism 66 has the function of opening and closing the water stop opening 614 of the water storage section 65. The water stop valve mechanism 66 has the water stop valve 661 and a vertically extending rod-shaped portion 662 that extends upward from the top surface of the water stop valve 661.

[0028] As shown in Fig. 5, the water stop valve 661 is disposed below the water stop opening 614 provided at the bottom of the water storage section 65. The water stop valve 661 is movable in the vertical direction by the vertically extending rod-shaped section 662 moving up and down. As shown in Fig. 4, the water stop valve 661 is formed in a conical shape whose diameter increases from top to bottom. The diameter of the bottom end of the water stop valve 661 is formed to be larger than the opening diameter of the water stop opening 614 formed at the bottom end of the water storage section 65.

[0029] A circular flange portion 661a is formed on the periphery of the lower end of the water stop valve 661, protruding radially outward, and a circular gasket 661b is attached to the upper surface of the circular flange portion 661a, which is pressed against the water stop opening 614 formed at the lower end of the water storage portion 65 when the water stop valve 661 is in the closed position.

[0030] Because water stop valve 661 is formed in a cone shape with a diameter that increases from top to bottom, it is possible to prevent hair and other debris from getting caught on the inclined surface of the cone-shaped part of water stop valve 661, thereby preventing debris from accumulating. This prevents foreign matter from getting caught in packing 661b attached to water stop valve 661, ensuring the water stop function of water stop valve 661.

[0031] The vertically extending rod-shaped portion 662 is driven by the vertical drive portion 74 (see FIGS. 2 and 12) to move the water stop valve 661 in the vertical direction. This enables the vertical drive portion 74 to move the water stop valve 661 in the vertical direction.

[0032] As shown in Figure 6, the water stop valve 661 can be moved between an open position (see Figure 5) in which it is positioned below the periphery of the water stop opening 614 formed in the lower part of the water storage section 65 and away from the water stop opening 614, thereby opening the water stop opening 614, and a closed position (see Figure 6) in which it abuts against the periphery of the water stop opening 614 from below the water stop opening 614 formed in the lower part of the water storage section 65 and stops water flow, by the vertically extending rod-shaped portion 662 moving vertically.

[0033] When the stop valve 661 is in the closed position, annular gasket 661b attached to the upper surface of annular flange portion 661a at the lower end of the stop valve 661 abuts against the lower periphery of water stop opening 614 formed at the lower end of the water storage portion 65. When the stop valve 661 is in the open position, annular gasket 661b attached to the upper surface of annular flange portion 661a at the lower end of the stop valve 661 is positioned downward and away from the lower periphery of water stop opening 614 formed at the lower end of the water storage portion 65. As a result, the water stop opening 614 of the water storage portion 65 can be opened or closed by moving the stop valve 661 to the open position or the closed position, and therefore, water can be easily stored temporarily in the water storage portion 65 by positioning the stop valve 661 in the open position.

[0034] 5, when water is discharged from water discharge section 22 provided at the bottom of sink 2 with stop valve 661 in the open position, the water discharged from water discharge section 22 flows into water storage section 65 of water storage mechanism section 6 via trap section 41 and is guided from water stop opening 614 formed at the bottom end of water storage section 65 of water storage mechanism section 6 to downstream drain section 8 (described below) located below stop valve 661. The water guided to downstream drain section 8 is drained into drain pipe 13 via downstream drain section 8.

[0035] 6, when water is discharged from water discharge section 22 provided at the bottom of sink 2 with stop valve 661 in the closed position, the water discharged from water discharge section 22 flows into water storage section 65 of water storage mechanism section 6 via trap section 41, and the water is stored in water storage section 65 of water storage mechanism section 6. An overflow wall 67 extending in the vertical direction is provided on the side of water storage section 65 opposite trap section 41.

[0036] The overflow wall 67 extends upward from the lower end of the water-stopping opening 614 formed at the lower end of the water storage section 65 on the radially opposite side to the trap section 41, so as to divide the water storage section 65 into left and right sections inside the vertically extending pipe 612.

[0037] The overflow wall 67 regulates the vertical position of the water stored in the water storage section 65 when the stop valve 661 closes the stop opening 614 formed at the bottom end of the water storage section 65. As a result, the overflow wall 67 determines the full water level of the water stored in the water storage section 65 when the stop valve 661 is in the closed position. The height of the upper end 671 of the overflow wall 67 is the full water level. When the stop valve 661 is in the closed position, water can be stored in the water storage section 65 up to the upper end 671 of the overflow wall 67.

[0038] In this embodiment, the height position of the upper end 671 of the overflow wall 67 is the position where the water discharge portion 22 formed at the bottom of the sink 2 is disposed, and is at approximately the same height as the step portion 23 formed at the top of the water discharge portion 22 provided at the bottom of the sink 2. Therefore, by storing water in the water storage portion 65 with the stop valve 661 in the closed position, water can be stored in the water discharge portion 22 and trap portion 41 of the sink 2, and the sink 2 can be filled with water up to the step portion 23 formed at the top of the water discharge portion 22 provided at the bottom of the sink 2.

[0039] This allows the water discharge portion 22 of the sink 2 and the trash basket 24 placed in the water discharge portion 22 to be immersed in water. In this state, by supplying disinfectant water (for example, hypochlorous acid water, which will be described later) to the water storage portion 65, the water discharge portion 22 of the sink 2 and the trash basket 24 placed in the water discharge portion 22 can be immersed in the disinfectant water for soaking. The position of the upper end of the overflow wall 67 is preferably set taking into consideration the position of the water discharge portion 22 of the sink 2 in the height direction.

[0040] The overflow flow path 68 is a flow path for water that has overflowed from the water storage section 65 and exceeded the height of the upper end 671 of the overflow wall 67. The water that has overflowed the upper end 671 of the overflow wall 67 passes through the overflow flow path 68 and is guided to a downstream drain section 8 (described below) that is disposed below the stop valve 661. The water that has been guided to the downstream drain section 8 is drained into the drain pipe 13 via the downstream drain section 8.

[0041] As shown in Figure 7, one upper end of the downstream drainage section 8 is rotatably connected to the lower part of the joint pipe section 61 of the water storage mechanism section 6, and the other lower end is connected to a drainage pipe 13 fixed to a body 12 such as a floor. The downstream drainage section 8 is connected with an upstream pipe section 81 (upper connection section) located on the upper side and a downstream pipe section 82 (lower connection section) located on the lower side, which are positioned at positions offset vertically and horizontally.

[0042] In other words, in the downstream drainage section 8, the upstream pipe section 81 is disposed on the upper side. The downstream pipe section 82 is connected to the upstream pipe section 81 while being disposed at a position offset laterally and downwardly from the upstream pipe section 81. The upper end of the upstream pipe section 81 is rotatably connected to the lower part of the joint pipe section 61 of the water storage mechanism section 6. The lower end of the downstream pipe section 82 is connected to a drainage pipe 13 that is fixed to a frame 12 such as a floor.

[0043] Here, a structure for installing a drainage device 3 between the sink 2 and the drain pipe 13 provided on the building frame 12 side will be described. Conventionally, when the sink 2 is installed, the position of the sink outlet 27 of the water discharge portion 22 of the sink 2 is fixed, and the drain pipe 13 is fixed to the building frame 12 side, such as the floor. Therefore, if the sink outlet 27 of the sink 2 and the drain pipe 13 fixed to the building frame 12 side are misaligned in a plan view, the drainage device 3 is connected to the sink outlet 27 of the sink 2, and then the drainage device 3 is connected to the drain pipe 13 provided on the building frame 12 side using a piping kit, hose, etc. However, when connecting the drainage device 3 to the drain pipe 13 provided on the building frame 12 side using a piping kit, hose, etc., additional parts are required, which is cumbersome.

[0044] In contrast, in this embodiment, as shown in FIG. 3, when the trap section 41 of the drain trap section 4 is attached to the sink outlet 27 of the sink 2, before being fixed by the fixing member 43, the drain trap section 4 is configured to be rotatable about the central axis 27a (first rotation axis) of the sink outlet 27 of the sink 2. The central axis 27a of the sink outlet 27 of the sink 2 extends in the vertical direction. Furthermore, when the downstream drain section 8 is attached to the lower end discharge pipe 613 of the joint pipe section 61 of the water storage mechanism section 6, before being fixed by the fixing member 69, the downstream drain section 8 is configured to be rotatable about the central axis 613a (second rotation axis) of the lower end discharge pipe 613 of the joint pipe section 61 of the water storage mechanism section 6. The central axis 613a (second rotation axis) of the lower end discharge pipe 613 extends in the vertical direction. The central axis 27a when the drain trap portion 4 rotates and the central axis 613a when the downstream drain portion 8 rotates are arranged at positions separated from each other in the horizontal direction.

[0045] 8 and 9, the drain trap section 4 is rotatable about the central axis 27a of the sink outlet 27 of the sink 2, and is therefore configured to be movable within a rotation range C1, and the downstream drain section 8 is rotatable about the central axis 613a of the lower end discharge pipe 613 of the joint pipe section 61 of the water storage mechanism section 6, and is therefore configured to be movable within a rotation range C2. Therefore, by rotating the drain trap section 4 to adjust its rotational position and rotating the downstream drain section 8 to adjust its rotational position, it can be positioned over a wide horizontal range, and the drain device 3 can be easily connected between the sink 2 and the drain pipe 13 that is arranged rising from the main body 12 side.

[0046] In this way, by rotating the drain trap section 4 relative to the lower part of the sink 2 to adjust its rotational position, and by rotating the downstream drain section 8 relative to the lower part of the joint pipe section 61 of the water storage mechanism section 6 to adjust its rotational position, the drain device 3 can be easily connected between the sink 2 and the drain pipe 13 rising from the main body 12 over a wide horizontal range, even if the position of the sink outlet 27 of the sink 2 and the position of the drain pipe 13 rising from the main body 12 are offset in a plan view.

[0047] Furthermore, in the downstream drain section 8, the upstream pipe section 81 and the downstream pipe section 82 are connected while being positioned at horizontally offset positions. Therefore, by forming the upstream pipe section 81 and the downstream pipe section 82 of the downstream drain section 8 to be horizontally offset and spread out horizontally, it is possible to connect to the drain pipe 13 even when the drain pipe 13 is fixed at a position far horizontally from the sink 2, and therefore it is possible to accommodate a wider range in the horizontal direction.

[0048] After adjusting the rotational position of the drain trap unit 4, the trap unit 41 of the drain trap unit 4 and the sink outlet 27 of the sink 2 are fixed with the fixing member 43. In addition, after adjusting the rotational position of the downstream drain unit 8, the downstream drain unit 8 and the lower end discharge pipe 613 of the joint pipe unit 61 of the water storage mechanism unit 6 are fixed with the fixing member 69.

[0049] The fixing members 43, 69 are formed in a narrow ring shape, and as shown in Figure 8, opening and closing portions 431, 691 are configured to open and close at a portion of the ring of the fixing members 43, 69, and the opening and closing portions 431, 691 open and close by rotating around hinge portions 431a, 691a, and are configured to have fitting portions 431b, 691b at their tips.

[0050] When fixing the trap portion 41 of the drain trap portion 4 to the sink outlet 27 of the sink 2 using the fixing member 43, as shown in Figure 8, the opening / closing portion 431 formed in a ring-shaped part of the fixing member 43 is opened and closed by rotating it around the hinge portion 431a, and the upper end of the trap portion 41 of the drain trap portion 4 and the lower end of the sink outlet 27 of the sink 2 are clamped by the ring-shaped fixing member 43, and the opening / closing portion 431 is closed, thereby fixing them by fitting them together using the fitting portion 431b provided at the tip of the opening / closing portion 431.

[0051] When fixing the upstream pipe section 81 of the downstream drainage section 8 and the lower end discharge pipe 613 of the joint pipe section 61 of the water storage mechanism section 6 using the fixing member 69, as shown in Figures 8 and 10A, the opening / closing section 691 formed in a circular part of the fixing member 69 is opened and closed by rotating it around the hinge section 691a, and the upper end of the upstream pipe section 81 of the downstream drainage section 8 and the lower end of the lower end discharge pipe 613 of the joint pipe section 61 of the water storage mechanism section 6 are clamped by the annular fixing member 69, and the opening / closing section 691 is closed, thereby fixing them by fitting them together using the fitting section 691b provided at the tip of the opening / closing section 691.

[0052] Next, we will explain the structure for attaching the drainage device 3 between the sink 2 and the drain pipe 13. Conventionally, when installing the drainage device 3 between the sink 2 and the drain pipe 13 fixed to the main body 12, it has been difficult to install the drainage device 3 between the sink 2 and the drain pipe 13 in the vertical direction because the sink 2 is fixed and the drain pipe 13 is fixed to the main body 12.

[0053] In this embodiment, as shown in Figures 10A and 10B, the downstream drain section 8 has a tubular downstream pipe section 82 (connecting tubular section) formed at the bottom and connected to the drain pipe 13. In Figures 10A and 10B, the downstream pipe section 82 of the downstream drain section 8 and the drain pipe 13 are connected at a normal connection position at the bottom of the downstream pipe section 82 of the downstream drain section 8 when installation of the drainage device 3 is complete between the sink 2 and the drain pipe 13, as shown in Figures 10A and 10B.

[0054] When the drain pipe 13 is connected to the downstream pipe section 82 of the downstream drain section 8 at the correct connection position, an intake section 83 is formed in the downstream pipe section 82 of the downstream drain section 8 further back than the correct connection position between the downstream pipe section 82 of the downstream drain section 8 and the drain pipe 13. In this embodiment, the correct connection position between the downstream pipe section 82 of the downstream drain section 8 and the drain pipe 13 is a position below the downstream pipe section 82 of the downstream drain section 8 when the drain pipe 13 is connected to the lower part of the downstream pipe section 82 of the downstream drain section 8, and the intake section 83 is formed above the correct connection position of the downstream pipe section 82 of the downstream drain section 8.

[0055] The swallowing section 83 is a space located further back (above the downstream pipe section 82 of the downstream drainage section 8) than the normal connection position (below the downstream pipe section 82) inside the downstream pipe section 82 of the downstream drainage section 8, and is a space in which the upper end of the drainage pipe 13 can be moved from the normal connection position (belower) to the farther (upper) side of the downstream pipe section 82 of the downstream drainage section 8 and swallowed.

[0056] When the drainage device 3 is installed between the sink 2 and the drain pipe 13, the downstream drain section 8 is configured to be movable between a position where the drain pipe 13 is arranged in the intake section 83 (see Figures 11A and 11B) and a normal connection position where the drain pipe 13 is properly connected to the downstream drain section 8 (see Figures 10A and 10B). This allows the upper end of the drain pipe 13 to be temporarily swallowed into the intake section 83 of the downstream drain section 8, as shown in Figures 11A and 11B, during construction to install the drainage device 3 between the sink 2 and the drain pipe 13.

[0057] Specifically, as shown in Figures 11A and 11B, by temporarily inserting the upper end of the drain pipe 13 into the inlet portion 83 of the downstream drain section 8, the downstream drain section 8 can be temporarily retracted below its normal connection position, and the portion of the drainage device 3 above the downstream drain section 8 (the lower discharge pipe 613 of the joint pipe section 61 of the water storage mechanism section 6) can be positioned below the sink 2. From this state, as shown in Figures 10A and 10B, by moving the downstream drain section 8 upward so as to move the upper end of the drain pipe 13 from the inlet portion 83 of the downstream drain section 8 to below the downstream pipe section 82 of the downstream drain section 8, the downstream drain section 8 can be positioned at its normal connection position. This allows the drainage device 3 to be easily attached between the sink 2 and the drain pipe 13.

[0058] The following describes the procedure for attaching the drainage device 3 between the sink 2 and the drain pipe 13. Here, the positions of the sink 2 and the drain pipe 13 in the vertical direction are fixed.

[0059] When installing the drainage device 3 between the sink 2 and the drain pipe 13, first, as shown in Figures 11A and 11B, the downstream drain section 8 is moved from above the drain pipe 13 toward the drain pipe 13, and the upper end of the drain pipe 13 is inserted inside the lower part of the downstream pipe section 82 of the downstream drain section 8. Then, the downstream drain section 8 is moved further downward until the upper end of the drain pipe 13 reaches the swallowing section 83, which is located above the normal connection position of the lower part of the downstream pipe section 82. In this way, the drain pipe 13 is swallowed into the swallowing section 83, which is formed in the downstream drain section 8 and further back than the normal connection position between the downstream drain section 8 and the drain pipe 13.

[0060] In this state, the upper end of the drain pipe 13 is inserted up to the intake portion 83 of the downstream pipe portion 82 of the downstream drain portion 8, and therefore the downstream drain portion 8 is retracted below the normal connection position so as to form a space above the downstream drain portion 8 for arranging the portions of the drainage device 3 other than the downstream drain portion 8. As a result, a vertical space (air space) is secured between the downstream drain portion 8 and the sink 2 for attaching the portions of the drainage device 3 above the downstream drain portion 8.

[0061] Next, with the downstream drain section 8 retracted below the normal connection position, the parts of the drainage device 3 other than the downstream drain section 8 are placed in the space between the sink 2 and the downstream drain section 8, and the parts of the drainage device 3 other than the downstream drain section 8 are fixed to the sink 2. In this state, as shown in FIG. 11B, a gap S is formed between the downstream drain section 8 into which the drain pipe 13 has been inserted and the part of the drainage device 3 connected to the sink 2 that is above the downstream drain section 8 (the lower end discharge pipe 613 of the joint pipe section 61 of the water storage mechanism section 6).

[0062] 11A and 11B, the downstream drain section 8 is moved upward, so that the drain pipe 13 moves from the intake section 83 to the normal connection position of the downstream drain section 8, as shown in FIGS. 10A and 10B, and the engaging section 81a formed at the upper end of the upstream pipe section 81 of the downstream drain section 8 is fitted into the engaging section 613b formed at the lower end of the lower discharge pipe 613 of the joint pipe section 61 of the water storage mechanism section 6. This allows the downstream drain section 8 to be positioned at the normal connection position, and the drainage device 3 can be easily placed in the space between the sink 2 and the drain pipe 13.

[0063] Then, as shown in Figures 10A and 10B, the upstream pipe section 81 of the downstream drainage section 8 is fixed to the lower end discharge pipe 613 of the joint pipe section 61 of the water storage mechanism section 6 using a fixing member 69, thereby fixing the downstream drainage section 8 to the parts of the drainage device 3 other than the downstream drainage section 8.

[0064] This means that even if the vertical positions of the sink 2 and the drain pipe 13 are fixed, when attaching the drain pipe 13 to the downstream pipe section 82 of the downstream drain section 8, the drain device 3 can be easily attached between the sink 2 and the drain pipe 13 by temporarily swallowing the upper end of the drain pipe 13.

[0065] Furthermore, when removing the drainage device 3 from between the sink 2 and the drain pipe 13, the drainage device 3 can be easily removed from between the sink 2 and the drain pipe 13 by following the reverse procedure of the procedure for attaching the drainage device 3 between the sink 2 and the drain pipe 13, and inserting the drain pipe 13 into the intake portion 83 formed further back than the normal connection position of the downstream pipe portion 82 of the downstream drain section 8.

[0066] In this embodiment, when the drainage device 3 is installed between the sink 2 and the drain pipe 13, the intake portion 83 is formed further back than the normal connection position between the downstream drainage portion 8 (drain pipe connection portion) and the drain pipe 13, so that when installing or removing the drain pipe 13, the drain pipe 13 is moved from the normal connection position to the back of the downstream drainage portion 8 (drain pipe connection portion) and swallowed, but this is not limited to this. For example, in a configuration in which the downstream drain section 8 (drain pipe connection section) and the drain trap section 4 are directly connected, the swallowing section may be formed further back than the normal connection position between the downstream drain section 8 (drain pipe connection section) and the drain trap section 4, so that the drain trap section 4 can be moved from the normal connection position to the back of the downstream drain section 8 (drain pipe connection section) and swallowed when installing or removing.In a configuration in which the downstream drain section 8 (drain pipe connection section) and the drain trap section 4 are indirectly connected via a joint pipe section 61 (joint member), the swallowing section may be formed further back than the normal connection position between the downstream drain section 8 (drain pipe connection section) and the joint pipe section 61 (joint member), so that the drain trap section 4 or the joint pipe section 61 (joint member) can be moved from the normal connection position to the back of the downstream drain section 8 (drain pipe connection section) and swallowed when installing or removing.

[0067] The water storage cleaning device 5 can perform the soaking wash operation by supplying hypochlorous acid water, which is disinfectant water, to the water storage unit 65 with the water stop valve 661 of the water storage mechanism unit 6 in the closed position. Note that, in this embodiment, hypochlorous acid water is exemplified as disinfectant water, but the invention is not limited to this.

[0068] 2 and 12, in addition to the water storage mechanism 6, the water storage cleaning device 5 further includes an operation panel 71 (operation unit), a salt supply unit 72 (salt water supply unit), a hypochlorous acid water supply unit 73 (sterilizing water supply unit) that supplies hypochlorous acid water (sterilizing water) to the water storage unit 65, a vertical drive unit 74, and a cleaning control unit 75 (control unit), as components for positioning the stop valve 661 of the water storage mechanism 6 in the closed position and supplying hypochlorous acid water, which is sterilizing water, to the water storage unit 65. Power is supplied to the hypochlorous acid water supply unit 73 and the vertical drive unit 74 via a power cable C.

[0069] The hypochlorous acid water supply unit 73 has a hypochlorous acid water generator 731 (sterilizing water generator) that generates hypochlorous acid water, which is sterilizing water. As shown in Fig. 12, water is supplied to the hypochlorous acid water supply unit 73 from outside the drainage device 3 via a water supply line L1. The water supplied to the hypochlorous acid water supply unit 73 via the water supply line L1 is branched inside the hypochlorous acid water supply unit 73 and supplied to the salt supply unit 72 via a salt supply unit water supply line L2, or to the water storage unit 65 of the water storage mechanism unit 6 via a water storage unit supply line L4.

[0070] The salt supply unit 72 generates salt water and supplies the salt water to the hypochlorous acid water supply unit 73 for generating hypochlorous acid water. The salt supply unit 72 is supplied with salt by the user, and water is also supplied via the salt supply unit water supply line L2. Because the salt used to generate salt water is a consumable item, the user periodically supplies salt, for example in tablet form, to the salt supply unit 72. To make it easier for the user to set the salt in the salt supply unit 72, the salt supply unit 72 is preferably located near the front of the sink cabinet 10 when the user is facing the front of the cabinet 1, as shown in FIG. 1 .

[0071] 12, the salt water generated by the salt supply unit 72 is supplied via a salt water supply line L3 to a hypochlorous acid water supply unit 73. Hypochlorous acid water is generated in a hypochlorous acid water generating section 731 of the hypochlorous acid water supply unit 73 from the salt water supplied to the hypochlorous acid water supply unit 73 via the salt water supply line L3.

[0072] The hypochlorous acid water generated in the hypochlorous acid water generation section 731 of the hypochlorous acid water supply unit 73 is supplied by the water storage section supply line L4 from the upper part of the vertically extending pipe 612 of the joint pipe section 61 to the water storage section 65 inside the water storage mechanism section 6. The upstream end of the water storage section supply line L4 is connected to the hypochlorous acid water supply unit 73, and the downstream end of the water storage section supply line L4 is connected to the upper surface of the upper end cover 62 arranged at the upper end of the vertically extending pipe 612 of the joint pipe section 61.

[0073] The operation panel 71 is used to operate the water storage cleaning device 5. Various buttons are arranged on the operation panel 71, and it is possible to start and stop the soaking wash operation and to set the timing and time for supplying hypochlorous acid water, which is disinfectant water, to the water storage mechanism unit 6. The operation panel 71 is electrically connected to the cleaning control unit 75 by wire or wirelessly.

[0074] The vertical drive unit 74 is connected to the vertically extending rod-shaped portion 662 via a drive line L5. The vertical drive unit 74 is configured with, for example, a motor or the like that drives the vertically extending rod-shaped portion 662 and the stop valve 661 in the vertical direction. The drive line L5 is configured with, for example, a drive wire or the like. The vertical drive unit 74 drives the vertically extending rod-shaped portion 662 of the stop valve mechanism 66 in the vertical direction, thereby moving the stop valve 661 in the vertical direction. The vertical drive unit 74 is electrically connected to the cleaning control unit 75.

[0075] When the vertical drive unit 74 is in a non-energized state due to a power outage or the like, it becomes inoperable and is unable to drive the stop valve 661. In this embodiment, the stop valve 661 is configured to move downward by its own weight when the vertical drive unit 74 is in a non-energized state due to a power outage or the like. For example, when the vertical drive unit 74 is energized, it moves the stop valve 661 up and down by the action of an electromagnet, and when it is not energized due to a power outage or the like, the action of the electromagnet stops functioning and the stop valve 661 is electrically disconnected from the vertical drive unit 74.

[0076] As a result, when the vertical drive unit 74 is in a de-energized state due to a power outage or the like, the water stop valve 661 moves downward under its own weight because it is electrically disconnected from the vertical drive unit 74. Therefore, when the vertical drive unit 74 is in a de-energized state, the water stop valve 661 moves downward under its own weight to the open position which opens the water stop opening 614 of the water storage unit 65, allowing water to be discharged from the water storage unit 65 of the water storage mechanism unit 6. In the event of a power outage or other de-energized state, water is prevented from continuing to accumulate in the water storage unit 65, ensuring safety.

[0077] The cleaning control unit 75 controls the cleaning operation of the reservoir cleaning device 5. For example, the cleaning control unit 75 automatically controls the timing at which the hypochlorous acid water supply unit 73 supplies hypochlorous acid water (sterilizing water) to the reservoir 65 at a predetermined timing. Specifically, the cleaning control unit 75 controls the hypochlorous acid water supply unit 73 to automatically supply hypochlorous acid water to the reservoir 65 based on the predetermined timing measured by the timer unit 751. In more detail, the cleaning control unit 75 controls the timing at which the hypochlorous acid water supply unit 73 supplies hypochlorous acid water so that the hypochlorous acid water supply unit 73 automatically supplies hypochlorous acid water at a predetermined time between midnight and early morning, once every predetermined number of days, based on a predetermined interval or time. For example, the cleaning control unit 75 controls the timing at which the hypochlorous acid water supply unit 73 automatically supplies hypochlorous acid water at a predetermined timing, such as once a day, once every three days, or once a week, for example, at 1:00 AM. The number of days between automatic executions and the time can be set as appropriate.

[0078] The operation panel 71 can be manually operated so that the hypochlorous acid water supply unit 73 supplies hypochlorous acid water to the water storage section 65. When the operation panel 71 is operated, the cleaning control section 75 controls the hypochlorous acid water supply unit 73 based on the operation of the operation panel 71 so that the soaking wash operation is manually performed.

[0079] Next, we will explain the control when soaking wash is performed in the storage water cleaning device 5. For example, soaking wash can be performed once every predetermined number of days at a predetermined time between midnight and early morning, or when a switch on the operation panel is pressed. Before performing the soaking wash operation, any food waste or the like caught in the waste basket 24 is removed.

[0080] For example, a case will be described in which the soaking wash is set to run automatically once every three days at 1:00 AM using the operation panel 71. The frequency and time of the soaking wash are not limited to this and can be set using the operation panel 71. Also, by pressing a switch on the operation panel 71, the user can manually start the soaking wash operation or manually stop the soaking wash operation midway through.

[0081] When the soaking wash is performed automatically at a predetermined timing, or when the user manually performs the soaking wash operation, the wash control unit 75 controls the vertical direction drive unit 74 to move the stop valve 661 from the open position to the closed position. This moves the stop valve 661 upward, and the stop valve 661 moves to the closed position.

[0082] Next, the cleaning control unit 75 controls the supply of hypochlorous acid water generated by the hypochlorous acid water supply unit 73 from the upper end of the water storage mechanism 6 to the water storage section 65 of the water storage mechanism 6. Specifically, the water supplied to the hypochlorous acid water supply unit 73 is supplied to the salt supply unit 72, and salt water is generated in the salt supply unit 72. Thereafter, the salt water generated in the salt supply unit 72 is supplied to the hypochlorous acid water supply unit 73, and hypochlorous acid water is generated in the hypochlorous acid water generation section 731 of the hypochlorous acid water supply unit 73. Then, a predetermined amount of hypochlorous acid water generated by the hypochlorous acid water supply unit 73 is supplied from the upper end of the water storage mechanism 6 to the water storage section 65 of the water storage mechanism 6.

[0083] By continuously supplying hypochlorous acid water to the water storage unit 65, the level of the hypochlorous acid water supplied to the water storage unit 65 rises to the upper end 671 of the overflow wall 67, as shown in Figure 6. As a result, the area in the drain trap unit 4 from the bottom of the water seal unit 414 to the height of the upper end 671 of the overflow wall 67 is filled with hypochlorous acid water, and the area in the water storage unit 65 of the water storage mechanism unit 6 from the stop valve 661 to the height of the upper end 671 of the overflow wall 67 is filled with hypochlorous acid water. As a result, the inner surface of the water discharge unit 22 located at the bottom of the water receiving unit 21 of the sink 2, the inner surface of the trap unit 41, the inner surface surrounding the water storage unit 65 of the water storage mechanism unit 6, the inner surface up to the midpoint of the stepped portion 23 of the water discharge unit 22 of the sink 2, and the waste basket 24 located in the water discharge unit 22 of the sink 2 are immersed in hypochlorous acid water.

[0084] Then, soaking can be performed by leaving the hypochlorous acid water stored in the downstream drain 8, trap 41, and water storage unit 65 of the water storage mechanism 6 for a predetermined time. If left in this state for a predetermined time, the slime in each part will be removed over time by the decomposition action of the hypochlorous acid water. In this way, each part immersed in the hypochlorous acid water is cleaned. As a result, in this embodiment, the water storage mechanism 6 can be used to easily soak the water discharge unit 22 of the sink 2 and the trash basket 24 placed in the water discharge unit 22. The soaking time for soaking is determined based on experimental results, etc., and set appropriately.

[0085] When the supply amount of hypochlorous acid water is large, some of the hypochlorous acid water that flows into the water storage mechanism 6 may go over the upper end 671 of the overflow wall 67. The hypochlorous acid water that goes over the upper end 671 of the overflow wall 67 passes through the overflow flow path 68 and is drained into the drain pipe 13 via the downstream drain section 8.

[0086] Next, the cleaning control unit 75 performs a rinsing operation to rinse the inside of the water storage unit 65 of the water storage mechanism unit 6 after soaking the water discharge unit 22 of the sink 2 and the waste basket 24. When performing the rinsing operation to rinse the inside of the water storage unit 65 of the water storage mechanism unit 6, the cleaning control unit 75 controls the hypochlorous acid water supply unit 73 to supply hypochlorous acid water to the water storage unit 65 of the water storage mechanism unit 6, and then, after a predetermined time, controls the hypochlorous acid water supply unit 73 to supply water supplied to the hypochlorous acid water supply unit 73 via the water supply line L1 and circulated via the water storage unit supply line L4 to the water storage unit 65 of the water storage mechanism unit 6. By continuing to supply water to the water storage unit 65 for a predetermined time, the hypochlorous acid water stored in the water storage unit 65 of the water storage mechanism unit 6 overflows the upper end 671 of the overflow wall 67 and is diluted by the supply of water, thereby rinsing the inside of the water storage unit 65. Thereafter, the water stop valve 661 is moved to the open position to discharge the water stored inside the water storage section 65, thereby rinsing the inside of the water storage section 65.

[0087] In this embodiment, the method for rinsing the inside of the water storage unit 65 of the water storage mechanism 6 involves diluting the hypochlorous acid water stored in the water storage unit 65 with water and then discharging the water by moving the stop valve 661 to the open position, but this is not limiting. Another method for rinsing the inside of the water storage unit 65 of the water storage mechanism 6 may involve moving the stop valve 661 to the open position to once discharge all of the hypochlorous acid water from inside the water storage unit 65, then re-storing water inside the water storage unit 65 of the water storage mechanism 6, and then discharging the water stored inside the water storage unit 65.

[0088] Next, a second embodiment will be described. The drainage device 3A of the second embodiment differs from the drainage device 3 of the first embodiment in that an extension section 9 is disposed between the joint pipe section 61 of the water storage mechanism section 6 of the drainage device 3 of the first embodiment and the downstream drainage section 8. In the second embodiment, the same components as those of the first embodiment are denoted by the same reference numerals and description thereof will be omitted.

[0089] As shown in Figures 13 to 15, the drainage device 3A of the second embodiment comprises a drain trap section 4 rotatably attached to the bottom of the sink 2, a water-storing flushing device 5, an extension section 9 (intermediate connection section), and a downstream drain section 8 (drain pipe connection section). The water-storing flushing device 5 comprises a water-storing mechanism section 6 having a joint pipe section 61 (drain joint section). The joint pipe section 61 is connected to the drainage trap section 4, and water from the drainage trap section 4 flows through it.

[0090] In the drainage device 3A of the second embodiment, an extension section 9 is disposed between the joint pipe section 61 of the water storage mechanism section 6 and the downstream drainage section 8. The extension section 9 is rotatably attached to the lower part of the joint pipe section 61. The extension section 9 has an upstream section 91 (upper connection section) disposed on the upper side and rotatably attached to the joint pipe section 61, and a downstream section 92 (lower connection section) disposed on the lower side, positioned laterally offset from the upstream section 91, and connected to the downstream side of the upstream section 91.

[0091] As shown in Figures 15 and 16, the upstream portion 91 is formed in the shape of a short cylinder with a bottom that opens upward. The downstream portion 92 is formed in the shape of a short cylinder with a bottom that opens downward. The upstream portion 91 and the downstream portion 92 are displaced in the vertical direction and in the radial direction, and are partially connected to each other. A communication opening 93 is formed where the upstream portion 91 and the downstream portion 92 overlap.

[0092] As shown in Figures 14 and 15, the upstream portion 91 of the extension unit 9 is rotatably attached to the joint pipe 61 of the water storage mechanism unit 6. When the upstream portion 91 of the extension unit 9 is attached to the joint pipe 61 of the water storage mechanism unit 6, but before it is fixed with the fixing member 94, the upstream portion 91 is configured to be rotatable about the central axis 613a of the lower end discharge pipe 613 of the joint pipe 61 of the water storage mechanism unit 6. Furthermore, the upstream pipe 81 of the downstream drainage unit 8 is rotatably attached to the downstream portion 92 of the extension unit 9.

[0093] As shown in Figures 14 and 15, the downstream drainage section 8 is rotatably attached to the lower part of the downstream section 92 of the extension section 9. The downstream drainage section 8 is connected to an upstream pipe section 81 (upper connection section) arranged on the upper side and a downstream pipe section 82 (lower connection section) arranged on the lower side, with the upstream pipe section 81 and the downstream pipe section 82 being arranged at positions offset vertically and horizontally. The upper end of the upstream pipe section 81 is rotatably connected to the lower part of the downstream section 92 of the extension section 9. The downstream pipe section 82 is connected to the upstream pipe section 81 at a position offset laterally and downwardly from the upstream pipe section 81. The lower end of the downstream pipe section 82 is connected to a drainage pipe 13 that rises from the side of the frame 12, such as a floor.

[0094] The downstream drainage section 8 has one upper end rotatably attached to the downstream part 92 of the extension part 9, and the other lower end connectable to a drainage pipe 13 provided on the main body 12. When the downstream drainage section 8 is attached to the downstream part 92 of the extension part 9, but before being fixed by the fixing member 95, the downstream drainage section 8 is configured to be rotatable around the central axis 92a of the downstream part 92 of the extension part 9.

[0095] Furthermore, in this embodiment, as shown in Figures 14, 17 and 18, when the trap portion 41 of the drain trap portion 4 is attached to the sink outlet 27 of the sink 2, before being fixed by the fixing member 43, the drain trap portion 4 is configured to be rotatable around the central axis 27a of the sink outlet 27 of the sink 2.

[0096] 17 and 18, the extension part 9 is rotatable about the central axis 613a of the lower end discharge pipe 613 of the joint pipe part 61 of the water storage mechanism part 6, and is therefore configured to be movable within a rotation range D2, and the downstream drain part 8 is rotatable about the central axis 92a of the downstream part 92 of the extension part 9, and is therefore configured to be movable within a rotation range D3. Therefore, by rotating the extension part 9 to adjust its rotational position and rotating the downstream drain part 8 to adjust its rotational position, it can be positioned over a wide horizontal range, and the drain device 3 can be easily connected between the sink 2 and the drain pipe 13 that is arranged rising from the main body 12 side.

[0097] In this way, by rotating the extension section 9 and the downstream drain section 8 and adjusting the rotational position, even if the size of the joint pipe section 61 of the water storage mechanism section 6 is different or the position of the sink outlet 27 of the sink 2 and the position of the drain pipe 13 rising from the main body 12 side are misaligned in a planar view, the drain device 3 can be positioned over a wide horizontal range, and the drain device 3 can be easily connected between the sink 2 and the drain pipe 13 rising from the main body 12 side.

[0098] In addition, the downstream drain section 8 is rotatably connected to the lower part of the extension section 9. In the downstream drain section 8, the upstream pipe section 81 and the downstream pipe section 82 are connected while being positioned at horizontally offset positions. Therefore, by forming the upstream pipe section 81 and the downstream pipe section 82 of the downstream drain section 8 to be horizontally offset and spread out horizontally, it can be connected to the drain pipe 13 even when the drain pipe 13 is fixed at a position far horizontally from the sink 2, and therefore can accommodate a wider horizontal range.

[0099] Furthermore, in addition to the configuration of the extension section 9, the drain trap section 4 is rotatable around the central axis 27a of the sink outlet 27 of the sink 2, and is therefore configured to be movable within a rotation range D1.In addition to rotating the extension section 9 and the downstream drain section 8 to adjust their rotational positions, by rotating the drain trap section 4 to adjust its rotational position, it can be positioned over a wider horizontal range, and can accommodate a wider horizontal range.

[0100] After adjusting the rotational position of the drain trap section 4, the trap section 41 of the drain trap section 4 and the sink outlet 27 of the sink 2 are fixed with a fixing member 43. Furthermore, after adjusting the rotational position of the extension section 9, the upstream section 91 of the extension section 9 and the lower end discharge pipe 613 of the joint pipe section 61 of the water storage mechanism section 6 are fixed with a fixing member 94. After adjusting the rotational position of the downstream drain section 8, the downstream drain section 8 and the downstream section 92 of the extension section 9 are fixed with a fixing member 95. The fixing structure of the fixing members 43, 94, 95 is the same as the fixing structure of the fixing members 43, 69 of the first embodiment, and therefore description thereof will be omitted.

[0101] Next, a third embodiment will be described. A drainage device 3B of the third embodiment differs from the drainage device 3 of the first embodiment in that a drainage joint pipe 85 is provided instead of the water storage mechanism 6 of the drainage device 3 of the first embodiment. In the third embodiment, the same components as those of the first embodiment are denoted by the same reference numerals and descriptions thereof will be omitted.

[0102] 19 and 20, the drainage device 3B of the third embodiment includes a drain trap unit 4 rotatably attached to the bottom of the sink 2, a drain joint pipe unit 85 (drain joint unit), and a downstream drain unit 8 (drain pipe connection unit). The drain joint pipe unit 85 is connected to the drain trap unit 4, and water from the drain trap unit 4 flows through it.

[0103] The drain joint pipe section 85 is connected to the drain trap section 4 at the upper inclined drain pipe section 42 provided on the side of the upper side of the drain trap section 4. Water from the drain trap section 4 flows through the drain joint pipe section 85.

[0104] The drain joint pipe section 85 is composed of an inclined inlet pipe 851 that slopes downward from the lower end of the upper inclined drain pipe section 42 of the drain trap section 4, and a lower end discharge pipe 852 that is connected to the lower end of the inclined inlet pipe 851.

[0105] The downstream drain section 8 has one end on the upper side rotatably connected to the lower part of the lower end discharge pipe 852 of the drain joint pipe section 85, and the other end on the lower side connected to a drain pipe 13 fixed to the main body 12 such as a floor.

[0106] In this embodiment, as shown in FIG. 19 , when the trap section 41 of the drain trap unit 4 is attached to the sink outlet 27 of the sink 2, before being fixed by the fixing member 43, the drain trap unit 4 is configured to be rotatable around the central axis 27a (first rotation axis) of the sink outlet 27 of the sink 2. The central axis 27a of the sink outlet 27 of the sink 2 extends in the vertical direction. Furthermore, when attached to the lower end discharge pipe 812 of the drain joint pipe 85, before being fixed by the fixing member 86, the downstream drain unit 8 is configured to be rotatable around the central axis 852a (second rotation axis) of the lower end discharge pipe 852 of the drain joint pipe 85. The central axis 852a (second rotation axis) of the lower end discharge pipe 613 extends in the vertical direction. The central axis 27a when the drain trap unit 4 rotates and the central axis 852a when the downstream drain unit 8 rotates are positioned apart in the horizontal direction.

[0107] Here, the drain trap section 4 of the third embodiment has the same configuration as the drain trap section 4 of the first embodiment, and is rotatable around the central axis 27a (first rotation axis) of the sink outlet 27 of the sink 2. Furthermore, the downstream drain section 8 of the third embodiment is rotatable around the central axis 852a (see FIG. 19) of the lower end discharge pipe 852 of the drain joint pipe section 85, whereas in the first embodiment it is rotatable around the central axis 613a (see FIG. 3) of the lower end discharge pipe 613 of the joint pipe section 61 of the water storage mechanism section 6.

[0108] Therefore, in the third embodiment, in Figures 8 and 9 of the first embodiment, the "center axis 613a of the lower end discharge pipe 613 of the joint pipe section 61 of the water storage mechanism section 6" in the first embodiment is read as "center axis 852a of the lower end discharge pipe 852 of the drain joint pipe section 85", and in the third embodiment, as in the first embodiment, the downstream drain section 8 can move within the range of rotation C2 (see Figures 8 and 9).

[0109] 8 and 9 of the first embodiment, the drain trap section 4 is rotatable about the central axis 27a of the sink outlet 27 of the sink 2 and is therefore configured to be movable within a rotation range C1, and the downstream drain section 8 is rotatable about the central axis 852a of the lower end drain pipe 852 of the drain joint pipe section 85 and is therefore configured to be movable within a rotation range C2. Therefore, in the third embodiment, as in the first embodiment, by rotating the drain trap section 4 to adjust its rotational position and rotating the downstream drain section 8 to adjust its rotational position, the drain device 3B can be positioned over a wide horizontal range, and the drain device 3B can be easily connected between the sink 2 and the drain pipe 13 that is arranged rising from the main body 12 side.

[0110] Also, in the third embodiment, as in the first embodiment, when the drain pipe 13 is connected to the downstream pipe section 82 of the downstream drain section 8 in the normal connection position, a swallowing section 83 is formed in the downstream pipe section 82 of the downstream drain section 8 further back than the normal connection position between the downstream pipe section 82 of the downstream drain section 8 and the drain pipe 13. As a result, in the third embodiment, as in the first embodiment, the drain device 3B can be easily attached between the sink 2 and the drain pipe 13 by temporarily swallowing the upper end of the drain pipe 13 into the swallowing section 83 of the downstream drain section 8, as shown in Figures 11A and 11B, and the drain device 3B can be easily removed from between the sink 2 and the drain pipe 13.

[0111] Although a preferred embodiment of the drainage device of the present disclosure has been described above, the present disclosure is not limited to the above-described embodiment and can be modified as appropriate. [Explanation of symbols]

[0112] 2 sink, 3 drainage device, 4 drainage trap section, 8 downstream drain section (drainage pipe connection section), 9 extension section (intermediate connection section), 12 body, 13 drainage pipe, 61 joint pipe section (drainage joint section), 81 upstream pipe section (upper connection section), 82 downstream pipe section (lower connection section), 91 upstream section (upper connection section), 92 downstream section (lower connection section)

Claims

1. A drain trap part that is attached to the bottom of the sink, a drain joint portion connected to the drain trap portion and through which water from the drain trap portion flows; an intermediate connection part rotatably attached to a lower part of the drainage joint part, the intermediate connection part having an upper connection part rotatably attached to the drainage joint part, and a lower connection part disposed at a position offset laterally from the upper connection part and connected to the downstream side of the upper connection part; A drainage device comprising: a drainage pipe connection portion rotatably attached to the lower connection portion and connectable to a drainage pipe provided on the main body side.

2. the upper connection portion is disposed on the upper side and formed in a cylindrical shape with a bottom that opens upward, the lower connection portion is disposed on the lower side and formed in a cylindrical shape with a bottom that opens downward, The drainage device according to claim 1 , wherein the upper connection portion and the lower connection portion are connected to each other at portions thereof that are shifted in both the vertical direction and the radial direction.

3. The drainage device described in claim 1 or 2, wherein the drainage pipe connection portion has an upper connection portion rotatably connected to the lower part of the intermediate connection portion, and a lower connection portion connected to the upper connection portion while being positioned laterally and downwardly offset from the upper connection portion, and to which the drainage pipe is connected.

4. The drainage device according to claim 1 or 2, wherein the drainage joint portion is connected to a side portion of an upper portion of the drainage trap portion.

5. The drainage device according to claim 1 or 2, wherein the drain trap portion is rotatably attached to a lower portion of the sink.

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