JP2023007670A - drain trap - Google Patents

Abstract

To provide a drain trap capable of allowing drainage to smoothly flow out of a bathtub.SOLUTION: The drain trap has a reception part 13 into which drainage from a bathtub flows. The reception part 13 has an inlet 17 into which drainage from the bathtub flows and an outlet 19 from which the drainage from the bathtub which flows in from the inlet 17 flows out. The inlet 17 and the outlet 19 include an inflow side facing part 50 and an outflow side facing part 51 respectively communicating straight.SELECTED DRAWING: Figure 2

Description

The present disclosure relates to drain traps.

2. Description of the Related Art Conventionally, a drain trap installed under the floor of a bathroom unit or the like is known. For example, Patent Literature 1 below describes a drainage trap having a water storage portion and a water sealing tube arranged in the water storage portion. The water seal of this drain trap is formed by the water reservoir and the water seal tube. Bathtub drainage discharged from the bathtub flows into the reservoir and is discharged from the reservoir to the drain pipe.

JP 2010-242462 A

In the drainage trap, there is a demand for smoothly draining bathtub drainage.

The present disclosure has been completed based on the circumstances as described above, and an object thereof is to provide a drainage trap that allows bathtub drainage to flow smoothly.

The drainage trap of the present disclosure includes a receiving portion into which bathtub drainage flows, and the receiving portion has an inlet into which the bathtub drainage flows and an outlet into which the bathtub drainage that has flowed in from the inlet flows out. The inflow port and the outflow port have an inflow-side facing portion and an outflow-side facing portion that are in direct communication with each other.

A side view of the drain trap installed under the floor of the bathroom unit. Longitudinal cross section showing drain trap Plan view showing drain trap FIG. 4 is a cross-sectional view showing the drain trap with the wall member removed, and is a cross-sectional view corresponding to the cross-section at the AA position in FIG. 3; FIG. 4 is a cross-sectional view showing the drain trap with the wall member attached, and is a cross-sectional view corresponding to the cross section taken along the line AA in FIG. 3; FIG. 4 is a cross-sectional view showing the drain trap with the wall member attached, the cross-sectional view corresponding to the cross-section taken along the line BB in FIG. 3; FIG. 2 is a plan cross-sectional view showing the drain trap, which is a cross-sectional view corresponding to the cross-section at the CC position in FIG. 1; Perspective view showing a wall member Partially enlarged plan cross-sectional view showing how the wall member is attached to and detached from the receiving part

<Embodiment>
The drain trap 10 is installed under the floor of the bathroom unit 90, as shown in FIG. A bathroom unit 90 includes a bathtub 91, a washing area 93, and a bathtub pan 95. - 特許庁The bathtub 91 has a bathtub drain port 92 for draining the water in the bathtub 91 . A bathtub pan 95 is placed under the bathtub 91 . The bathtub pan 95 has a bathtub pan drain port 96 below the drain port of the bathtub 91 . A bathtub drain pipe 97 is connected to the bathtub pan drain port 96 . The drain trap 10 is connected to the downstream end of the bathtub drain pipe 97 . The wash area 93 constitutes the floor surface of the bathroom unit 90 . The washing place 93 has a washing place drain port 94 for draining the water of the washing place 93 . The drain trap 10 is connected to the underside of the washing area drain 94 .

The bathroom unit 90 is installed on a floor structure 98 such as a slab. A drain trap 10 is installed between the washing area 93 and the floor structure 98 . The space between the washing area 93 and the floor structure 98 is the installation space 99 for the drain trap 10 . The height dimension H1 of the installation space 99 is determined by the height above water UBFL of the washing area 93 of the bathroom unit 90 and the height position SL of the floor structure 98 . The height dimension H2 of the drain trap 10 is made small so as to correspond to the case where the installation space 99 has a small height dimension H1. The height dimension H2 of the drain trap 10 is the vertical dimension of the outer shape of the receiving portion 13, which will be described later, and is the dimension from the mounting surface to the lower end of the receiving portion 13. As shown in FIG. The height dimension H2 of the drain trap 10 is 130 mm or less.

The drain trap 10 has, as shown in FIG. Bathtub drainage drained from a bathtub 91 flows into the drainage trap 10 from the side. Washing place drainage discharged from the washing place 93 flows into the drain trap 10 from above. The drain trap 10 has an outlet-side connector 12 connected to the upstream end of the external lead-out pipe 100 . The drain trap 10 discharges the bathtub drain and the washing place drain to the external outlet pipe 100 .

The drain trap 10 includes an inlet portion 15, a receiving portion 13, and an outlet portion 14, as shown in FIG. The introduction part 15 has a bathtub-side connection part 11 . Bathtub drainage and, if necessary, other drainage are introduced into the introduction part 15 . Bathtub wastewater, washing area wastewater, and other wastewater, if introduced, flow into the receiving portion 13 . The outflow portion 14 is provided in communication with the downstream side of the receiving portion 13 . The outlet 14 has a waste water outlet 16 . The waste water outlet 16 allows the other waste water to flow out when the bathtub waste water, the washing place waste water, and other waste water flow into the receiving portion 13 . The drainage outlet 16 is an opening on the upstream side of the outlet-side connection portion 12 . The drainage outlet 16 is provided in the central portion in the left-right direction of the outflow portion 14 (see FIG. 7).

Hereinafter, in each component, the upper side in the state where the drain trap 10 is installed on the lower side of the bathroom unit 90 is the upper side, the lower side is the lower side, the bathtub side inlet 17 side is the rear side, and the drainage outlet 16 side is the front side. , from the bathtub side inlet 17 side to the drain outlet 16 side, the right side is the right side, and the left side is the left side. In each figure, the positive side of the X-axis is the front side, the negative side of the X-axis is the rear side, the positive side of the Y-axis is the top side, the negative side of the Y-axis is the bottom side, and the positive side of the Z-axis is the right side. , the negative side of the Z-axis indicates the left side.

The receiving part 13 has a bathtub side inlet 17 , a washing area side inlet 18 , and an outlet 19 , as shown in FIG. 2 . Bathtub drainage flows into the receiving portion 13 from the bathtub-side inlet 17 .

Bathtub-side inlet 17 opens in side wall 23 of receiving portion 13 and communicates introduction portion 15 and receiving portion 13 . As shown in FIG. 4, the bathtub side inlet 17 has a rectangular shape elongated in the left-right direction. The horizontal dimension W1 of the bathtub-side inlet 17 is equal to the diameter of the opening of the bathtub-side connecting portion 11 at the downstream end. The height dimension H5 of the bathtub side inlet 17 is constant in the horizontal direction. An upper end 17U of the bathtub-side inlet 17 is positioned slightly below half of the vertical dimension H2 of the outer shape of the receiving portion 13 .

The washing place side inlet 18 is circular (see FIG. 3). A hair catcher 21 is detachably attached to the washing place side inlet 18.例文帳に追加The hair catcher 21 catches foreign substances such as hair flowing from the washing place 93. - 特許庁The hair catcher 21 is arranged above the water sealing surface F. The water sealing surface F is a water surface formed in the receiving portion 13 and the outflow portion 14 when the drain trap 10 is filled with water (see FIG. 2).

The outflow port 19 is provided at the lower end of a partition wall 25 that separates the outflow portion 14 from the side wall 23 of the receiving portion 13, as shown in FIG. The height position of the upper end 19U of the outflow port 19 is lower than the height position of the upper end 17U of the bathtub side inflow port 17 . As a result, the height dimension H2 of the drain trap 10 can be reduced while the sealing water depth H3 can be ensured. The water sealing depth H3 is the height difference between the upper end 19U of the outflow port 19 and the water sealing surface F.

As shown in FIG. 6, the outflow port 19 is elongated in the left-right direction. The outflow port 19 continues from the left end to the right end of the receiving portion 13 . A lateral dimension W2 of the outflow port 19 when viewed from the rear side is larger than a lateral dimension W1 of the bathtub side inflow port 17 when viewed from the front side. The vertical dimension H6 of the outflow port 19 is constant in the lateral direction of the outflow port 19 .

The side wall 23 of the receiving portion 13 includes a bathtub side portion 24, an outlet side portion 25, and left and right side portions 26, as shown in FIG. The outlet side portion 25 is a partition wall 25 that separates the receiving portion 13 and the outflow portion 14 . An inspection opening 32 is formed in the outlet side portion 25 (see FIG. 6). The left and right side portions 26 extend in the front-rear direction and connect the left and right ends of the bathtub side portion 24 and the outlet side portion 25 . The side walls 27 of the outflow portion 14 are connected to the left and right ends of the outlet side portion 25 and to the front ends of the left and right side portions 26 . A connecting portion between the side wall 23 of the receiving portion 13 and the side wall 27 of the outflow portion 14 is referred to as a connecting portion 28 .

The bathtub side part 24 forms the bathtub side inlet 17, as shown in FIG. In FIG. 7, the formation range of the bathtub-side inlet 17 is shaded. The bathtub side portion 24 has a linear shape extending in the left-right direction in a plan view. An introduction portion 15 is provided on the outer surface of the bathtub side portion 24 .

The outlet side portion 25 forms the outlet 19, as shown in FIG. In FIG. 7, the formation range of the outflow port 19 is indicated by shading. The outlet side portion 25 protrudes forward from a connection portion 28 with the side wall 27 of the outflow portion 14 . The exit side surface portion 25 has an arc shape in which the center portion in the left-right direction is located forward of both end portions in the left-right direction in a plan view. A central portion in the left-right direction of the outlet side portion 25 is a linear portion 29 that is linear in plan view. The straight portion 29 is parallel to and faces the bathtub side portion 24 . An inspection opening 32 is formed in the straight portion 29 . Both ends of the outlet side portion 25 in the left-right direction are curved portions 31 that are curved in a plan view. The curved portion 31 obliquely extends from the connecting portion 28 toward the straight portion 29 . The outflow port 19 is formed in the entire lower end portion of the outlet side portion 25 . The outflow port 19 continues from the left connecting portion 28 to the right connecting portion 28 .

As shown in FIG. 7, the bathtub-side inlet 17 and the outlet 19 have an inflow-side facing portion 50 and an outflow-side facing portion 51 that are in direct communication with each other. The term “straight” means linear in plan view, and includes cases where the position is displaced in the vertical direction. The inflow-side facing portion 50 is the entire bathtub-side inflow port 17 . The outflow-side facing portion 51 is part of the outflow port 19 . Specifically, the outflow-side facing portion 51 is a projected portion of the outflow port 19 when the bathtub-side inflow port 17 is projected onto the outlet side surface portion 25 . The outflow-side facing portion 51 is substantially the entire portion of the outflow port 19 formed in the left curved portion 31 .

The drain trap 10 has a wall member 40 extending from an inflow side facing portion 50 toward an outflow side facing portion 51 . As shown in FIG. 8, the wall member 40 has an upper wall portion 41 and left and right first side wall portions 42F and second side wall portions 42S. As shown in FIG. 2 , the upper wall portion 41 extends forward from the upper end of the bathtub-side inlet 17 when the wall member 40 is attached to the receiving portion 13 . The upper wall portion 41 descends from the inflow side facing portion 50 toward the outflow side facing portion 51 . The wall member 40 is detachable from the receiving portion 13 .

A rear end portion of the wall member 40 is fitted into the bathtub side inlet 17 . A rear end portion of the wall member 40 forms a horizontally long opening with the upper wall portion 41 and the left and right first side wall portions 42F and second side wall portions 42S. The opening at the rear end of the wall member 40 has approximately the same size as the bathtub side inlet 17 .

The wall member 40 has a hand portion 52 as shown in FIG. The handle portion 52 protrudes upward from the upper wall portion 41 . The handle portion 52 is provided in the center portion of the wall member 40 in the front-rear direction. The user can easily attach/detach the wall member 40 to/from the receiving portion 13 by gripping the handle portion 52 .

A left edge 53 of the upper wall portion 41 is curved along the side wall 23 of the receiving portion 13, as shown in FIG. A right edge 54 of the upper wall portion 41 is linear in plan view. The top surface of the upper wall portion 41 is provided with an arrow indicating the mounting and demounting direction of the wall member 40 . The wall member 40 is attached and detached by sliding in the left-right direction.

The wall member 40 includes a first hook portion 55 and a second hook portion 56 that hook onto the side wall 23 of the receiving portion 13 . The first hook portion 55 is provided at a corner portion of the upper surface of the upper wall portion 41 . The first hooking portion 55 is inserted into the bathtub side inlet 17 and hooked on the side wall 23 of the receiving portion 13 . The second hook portion 56 is provided at the front end portion of the upper wall portion 41 . The second hooking portion 56 is inserted into the outflow port 19 and hooked on the side wall 23 of the receiving portion 13 . A positioning portion 57 is provided on the upper surface of the upper wall portion 41 . The positioning portion 57 is wall-shaped along the side wall 23 of the receiving portion 13 .

The first side wall portion 42F and the second side wall portion 42S are provided from the rear end of the wall member 40 to an intermediate position in the front-rear direction of the wall member 40, as shown in FIG. The first side wall portion 42</b>F hangs down from the right edge 54 of the upper wall portion 41 . A right edge 54 of the upper wall portion 41 extends obliquely and linearly so as to reduce the lateral dimension of the upper wall portion 41 . The second side wall portion 42</b>S hangs down from a position slightly to the right of the left edge 53 of the upper wall portion 41 . The second side wall portion 42</b>S closely follows the side wall 23 of the receiving portion 13 .

As shown in FIGS. 7 and 8, the wall member 40 has a first opening 43F and a second opening 43S opening in the left-right direction downstream from the inflow-side facing portion 50 to the outflow-side facing portion 51. are doing. In FIG. 7, the formation ranges of the first opening 43F and the second opening 43S are shaded. The first opening 43F is a portion on the front side of the front end of the first side wall portion 42F. The second opening 43S is a portion on the front side of the front end of the second side wall portion 42S. The first opening 43F and the second opening 43S communicate in the left-right direction. The first opening 43</b>F and the second opening 43</b>S are continuous at the front end of the wall member 40 . A rear end of the second opening 43S is positioned near the connecting portion 28 . The second opening 43S extends along the outflow side facing portion 51 .

Inside the wall member 40, the upper wall portion 41 and the left and right first side wall portions 42F and second side wall portions 42S form a flow path that flows linearly from the inflow side facing portion 50 toward the outflow side facing portion 51. be. The water flowing inside the wall member 40 spreads in the left-right direction on the downstream side. The water flowing along the first side wall portion 42</b>F inside the wall member 40 changes its flow direction diagonally to the right from the first opening 43</b>F and flows out of the wall member 40 to the outside. The water flowing along the second side wall portion 42</b>S inside the wall member 40 changes its direction of flow obliquely to the left from the second opening 43</b>S and flows out of the wall member 40 to the outside.

Drainage of the drain trap 10 when the wall member 40 is attached to the receiving portion 13 will be described. Washing place drainage flows into the receiving part 13 from the washing place side inlet 18 while passing through the hair catcher 21 . Drainage from the washing area that hits the upper wall portion 41 of the wall member 40 is guided to the outflow port 19 along the upper wall portion 41 . The wastewater from the washing area that has not hit the upper wall portion 41 is guided to the outflow port 19 along the outer surface of the first side wall portion 42F of the wall member 40 . Therefore, it is possible to prevent the washing place drainage from flowing back to the bathtub side inlet 17 .

Bathtub drainage flows into the wall member 40 from the bathtub-side inlet 17 and is linearly guided to the outflow-side facing portion 51 . At this time, the bathtub drainage that spreads rightward from the first opening 43</b>F on the downstream side of the wall member 40 flows into the outflow-side facing portion 51 and the right side of the outflow-side facing portion 51 . Bathtub drainage that spreads leftward from the second opening 43</b>S flows into the outflow side facing portion 51 . Since the outflow port 19 has a sufficient width in the left-right direction, the drainage from the bathtub flows out without overflowing in the receiving portion 13 . When the outflow of washing place drainage and bathtub drainage is stopped, sealed water accumulates up to the sealed water surface F inside the receiving part 13 and the outflow part 14 . This prevents the backflow of odor from the external lead-out pipe 100 and the invasion of pests.

Even if the wall member 40 is not attached to the receiving portion 13 , the bathtub drainage flows straight from the bathtub-side inlet 17 , expands in the left-right direction, flows into the outlet 19 , and flows into the outlet 14 . flow in. Since the outflow port 19 has a sufficient width in the left-right direction, the drainage from the bathtub flows out without overflowing in the receiving portion 13 .

According to the embodiment configured as described above, the following effects are obtained. The drain trap 10 has a receiving portion 13 into which bathtub drain water flows. The receiving portion 13 has a bathtub-side inlet 17 and an outlet 19 . Bathtub drainage flows into the bathtub side inlet 17 . The outflow port 19 allows the bathtub drainage that has flowed in from the bathtub side inflow port 17 to flow out. The bathtub-side inlet 17 and the outlet 19 have an inflow-side facing portion 50 and an outflow-side facing portion 51 that are in direct communication with each other. According to this configuration, bathtub wastewater flows linearly from the inflow-side facing portion 50 to the outflow-side facing portion 51 and flows out. Therefore, the drainage from the bathtub can flow out more smoothly than in the case where it collides with a shield or flows in a curved line in the receiving portion 13 .

The drain trap 10 has an outlet 14 . The outflow portion 14 is provided in communication with the downstream side of the outflow port 19 . A water seal is formed by storing water in the outflow portion 14 . The height position of the upper end 19U of the outflow port 19 is lower than the height position of the upper end 17U of the bathtub side inflow port 17 . According to this configuration, since the height position of the upper end 19U of the outflow port 19 of the receiving portion 13 is low, the water sealing depth H3, which is the height difference between the upper end 19U of the outflow port 19 of the receiving portion 13 and the water sealing surface F, can be secured. .

In the drainage trap 10, the lateral dimension W2 of the outflow port 19 is larger than the lateral dimension W1 of the bathtub-side inlet 17. As shown in FIG. According to this configuration, the bathtub drainage spreads in the lateral direction from the bathtub side inlet 17 and flows into the outlet 19, so that the force (flow path resistance) that hinders the flow of the bathtub drainage can be reduced.

The drain trap 10 has a wall member 40 extending from an inflow side facing portion 50 toward an outflow side facing portion 51 . According to this configuration, the bathtub drainage flows along the wall member 40 from the inflow-side facing portion 50 to the outflow-side facing portion 51, so that the bathtub drainage can smoothly flow out.

The wall member 40 has a first opening 43</b>F and a second opening 43</b>S opening in the left-right direction on the downstream side from the inflow-side facing portion 50 toward the outflow-side facing portion 51 . According to this configuration, the bathtub drainage spreads in the left-right direction from the first opening 43F and the second opening 43S of the wall member 40 on the downstream side from the inflow-side facing portion 50 to the outflow-side facing portion 51, and flows into the outflow port 19. flow into. Therefore, bathtub drainage can be smoothly discharged.

The wall member 40 has an upper wall portion 41 that descends from an inflow side facing portion 50 toward an outflow side facing portion 51 . According to this configuration, the bathtub drainage flows into the outlet 19 along the upper wall portion 41 of the wall member 40, so that the bathtub drainage can smoothly flow out.

The flow from the inflow-side facing portion 50 to the outflow-side facing portion 51 along the wall member 40 spreads in the left-right direction on the downstream side. According to this configuration, bathtub drainage flowing along the wall member 40 spreads in the left-right direction on the downstream side and flows into the outlet 19 . Therefore, bathtub drainage can be smoothly discharged.

The wall member 40 is detachable from the receiving portion 13 . According to this configuration, the wall member 40 can be removed from the receiving portion 13 and cleaned, so that the cleaning property can be improved.

<Other embodiments>
The present disclosure is not limited to the embodiments described by the above description and drawings, and the following embodiments are also included in the technical scope of the present disclosure.

(1) In the above embodiment, the bathroom unit 90 includes the bathtub pan 95 . Not limited to this, the drain trap 10 can also be applied to a bathroom unit that does not have a bathtub pan.
(2) In the above embodiment, the wall member 40 includes a first side wall portion 42F and a second side wall portion 42S. Not limited to this, the wall member may not include both or either one of the first side wall portion and the second side wall portion.
(3) In the above embodiment, the first opening 43F and the second opening 43S are formed in the first side wall 42F and the second side wall 42S, respectively. Alternatively, the opening may not be formed in both or either one of the first side wall and the second side wall.

H3: Sealed water depth W1: Horizontal dimension of bathtub inlet W2: Horizontal dimension of outlet 10: Drainage trap 13: Receiving part 14: Outflow part 17: Bathtub side inlet (inlet ), 17U... Upper end of bathtub side inlet, 19... Outlet, 19U... Upper end of outlet, 40... Wall member, 41... Upper wall, 43F... First opening (opening), 43S... Second opening Part (opening), 50... inflow side facing part, 51... outflow side facing part

Claims (8)

Equipped with a receiving part into which bathtub drainage flows,
The receiving part has an inlet into which the bathtub drainage flows, and an outlet from which the bathtub drainage that has flowed in from the inlet flows out,
The waste trap, wherein the inlet and the outlet have inflow and outflow facings in straight communication. An outflow part provided in communication with the downstream side of the outflow port,
A water seal is formed by storing water in the outflow part,
2. The drainage trap according to claim 1, wherein the height position of the upper end of the outflow port is lower than the height position of the upper end of the inflow port. 3. A drainage trap according to any one of claims 1 to 2, wherein the lateral dimension of the outlet is greater than the lateral dimension of the inlet. 4. A waste trap according to any one of claims 1 to 3, comprising a wall member extending from said inflow facing towards said outflow facing. 5. The drain trap according to claim 4, wherein said wall member has an opening opening in the left-right direction on a downstream side from said inflow-side facing portion toward said outflow-side facing portion. 6. The drain trap according to any one of claims 4 to 5, wherein the wall member has an upper wall portion that descends from the inflow side facing portion toward the outflow side facing portion. 7. The drain trap according to any one of claims 4 to 6, wherein the flow along the wall member from the inflow-side facing portion to the outflow-side facing portion spreads laterally on the downstream side. . 8. A drainage trap according to any one of claims 4 to 7, wherein the wall member is detachable with respect to the receiving portion.

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