JP5624337B2 - Drainage coupler - Google Patents

Description

  The present invention relates to a drainage connector.

  A conventional drainage connector is disclosed in FIG. This drainage connector has an outlet of the toilet drainage channel connected to the downstream side of the toilet bowl provided in the toilet bowl body, and an inlet of a drain pipe that opens toward the toilet room where the toilet bowl body is installed. It is connected. The drainage connector includes an upstream opening connected to the outlet of the toilet drainage channel, a descending pipe portion that forms a downward flow path extending downward from the upstream opening, and a lower portion of the downward flow path. And a downstream opening that is provided at the downstream end of the horizontal pulling pipe and connected to the inlet of the drain pipe.

  In this drainage connector, the outlet of the toilet drainage channel that is separated in the front-rear direction and the inlet of the drainage pipe can be connected. In addition, since the horizontal pipe can be cut according to the distance between the outlet of the toilet drainage channel and the inlet of the drainage pipe, the drainage of the toilet drainage channel can be changed even if the position of the outlet of the toilet drainage channel changes. The outlet and the inlet of the drain pipe can be connected.

Japanese Patent No. 2830476

  However, in the drainage connector of Patent Document 1, the inside of the corner portion where the flow path direction changes in the direction of the horizontal pulling flow path is bent at an acute angle. For this reason, the flow of the waste water that has flowed down the descending flow path is peeled off from the upper wall of the upstream end portion of the horizontal pulling flow path to form a vortex flow. Thereby, a stagnation part is formed in the upper part of the upstream end part of the horizontal pulling channel. For this reason, it is only under the stagnation part that the drainage flows down favorably at the upstream end of the horizontal pulling channel. That is, since the stagnation portion is formed at the upstream end portion of the horizontal pulling channel, the discharge flow rate of the drainage connector is reduced, and thus the drainage performance of the drainage discharged from the toilet body may be lowered.

  This invention is made | formed in view of the said conventional situation, Comprising: It is set as the problem which should be solved to provide the drainage connector which can discharge | emit the waste_water | drain from a toilet bowl main body favorably.

The drainage connector according to the present invention includes an outlet of a toilet drainage channel connected to a downstream side of a toilet bowl provided in a toilet body, and an inlet of a drain pipe that opens toward a toilet room in which the toilet body is installed A drainage connector for connecting
An upstream opening connected to the outlet;
A descending pipe portion that forms a downward flow path extending downward from the upstream opening;
A transverse pipe portion that forms a transverse passage extending in the lateral direction from the lower portion of the descending passage;
Provided at the downstream end of the horizontal pulling pipe portion, and provided with a downstream opening connected to the inflow port,
The downstream end portion of the descending flow channel and the upstream end portion of the horizontal pulling flow channel form a corner portion in which the flow channel direction changes to the horizontal pulling flow channel direction. lateral direction of the channel width of the pull channel is much larger than the lateral direction of the channel width of the downward flow passage is an inlet side of the corner portion,
The descending channel is characterized in that the channel width in the left-right direction gradually increases from the upstream end to the horizontal channel on the outlet side of the corner portion .

  In this drainage connector, when the drainage that flows in from the upstream opening flows down the descending channel and the horizontal channel, a stagnation portion is formed on the outlet side of the corner portion. That is, on the outlet side of the corner portion where the flow path direction changes to the direction of the horizontal pulling flow path, the flow of drainage is peeled off from the upper wall of the horizontal pulling flow path to form a vortex and a stagnation portion is formed. In the region where the stagnation part is formed, the horizontal channel width of the horizontal pulling channel on the outlet side of the corner part is made larger than the horizontal channel width of the descending channel on the inlet side of the corner part. Since the flow passage area of the pulling flow passage is enlarged, the drainage can flow down well even if the stagnation portion is formed. For this reason, it is possible to prevent a decrease in the discharge flow rate per unit time of the drainage coupler.

  Therefore, the drainage connector of the present invention can discharge the drainage from the toilet body.

  The descending channel may be inclined forward or backward from the upstream end toward the lower side while the inner wall on the front side and the inner wall on the rear side facing each other perpendicular to the direction of the channel approach each other. In this case, the drainage flowing down along one inner wall on the front side or the rear side of the descending flow path is scattered toward the other inner wall. As a result, a water film is formed, and the downflow channel and the toilet drainage channel upstream of the water film can be sufficiently filled with drainage. For this reason, a siphon action can be satisfactorily generated in the descending flow path and the toilet drainage path. Therefore, the waste water from the toilet body can be discharged more satisfactorily using the siphon action.

The downward flow path, Ru channel width in the lateral direction from the upstream end toward the lateral pulling passage on the outlet side of the corner portion is gradually enlarged Tei. In this case, it is possible to prevent the channel width in the left-right direction from abruptly increasing in the horizontal pulling channel on the outlet side of the corner portion from the upstream end of the descending channel. For this reason, it is possible to suppress the turbulence of the flow in the descending flow path and the horizontal pulling flow path due to the sudden expansion of the flow path width in the left-right direction. Therefore, the drainage can flow down well in the descending flow path and the horizontal pulling flow path.

  In addition, if the width of the channel in the left-right direction is gradually increased so as to be smoothly connected to the left and right inner walls of the upstream end of the horizontal channel on the outlet side of the corner portion, the flow in the horizontal channel is made smoother. It is possible to drain the drainage well.

  Further, in the descending flow path, the front wall and the rear wall facing each other perpendicular to the flow path direction approach each other and incline forward or backward toward the bottom, so that the flow path width in the front-rear direction is increased. Even if it is gradually reduced, the width of the channel in the left-right direction gradually increases, so that it is possible to suppress a decrease in the channel cross-sectional area in the descending channel. For this reason, drainage can be made to flow down favorably in the downward flow path.

  The downcomer may have a throttle portion formed at an upper end and having a flow path area reduced from the upstream opening. In this case, the water film can be formed by causing the drainage that has flowed down from the upstream opening to collide with the upper surface of the throttle portion to be scattered. Thereby, drainage can fully be filled in the toilet drainage channel upstream from the throttle part, and siphon action can be generated at an early stage. For this reason, the waste water from the toilet body can be discharged well using the siphon action.

  Further, the siphon action generated by the throttle part is caused by the fact that the drainage collides with one inner wall on the front side or the rear side of the descending channel and scatters toward the other inner wall in the middle part of the descending channel. Is formed, the downflow channel upstream of the water film can also be filled with the drainage, so that a stronger siphon action can be achieved. For this reason, the waste_water | drain from a toilet bowl main body can be discharged | emitted more favorably.

It is sectional drawing of the flush toilet bowl provided with the drainage coupling tool of the reference example . It is principal part sectional drawing of the drainage coupling tool of a reference example . It is arrow AA sectional drawing of FIG. It is arrow BB sectional drawing of FIG. It is sectional drawing which shows the case where the horizontal pulling pipe part of the drainage coupling tool of a reference example is cut and used. It is sectional drawing of the left-right direction which shows the downward flow path of the drainage connector of Example 1. FIG. It is arrow DD sectional drawing of FIG. It is sectional drawing of the drainage connector of Example 2 . It is sectional drawing of the flush toilet bowl provided with the drainage connector of Example 3 . It is sectional drawing of the drainage connector of Example 3 .

Embodiments 1 to 3 and a reference example embodying the drainage connector of the present invention will be described with reference to the drawings.

< Reference example >
As shown in FIGS. 1 and 2, the drainage connector 10 of the reference example includes an outlet 3 </ b> A of the toilet drainage channel 3 connected to the downstream side of the toilet bowl 2 provided in the toilet body 1, and the toilet body 1. The inlet 5A of the drain pipe 5 that opens toward the toilet room R to be installed can be connected. A discharge port 3A of the toilet drainage channel 3 opens downward. The inflow port 5A of the drain pipe 5 is opened upward from the inside of the through hole H that penetrates the floor surface F at a position away from the lower side of the discharge port 3A of the toilet drainage channel 3 forward.

  The drainage connector 10 includes an upstream opening 11 connected to the discharge port 3A of the toilet drainage channel 3, a descending pipe portion 12 that forms a downward flow path L1 extending downward from the upstream opening 11, and a downward flow A horizontal pulling pipe portion 13 that forms a horizontal pulling flow path L2 extending forward (laterally) from the lower portion of the path L1 and a downstream end of the horizontal pulling pipe portion 13 are connected to the inlet 5A of the drain pipe 5. And a downstream opening 14.

  The upstream opening 11 has a cylindrical shape, and a convex portion 11 </ b> A that goes around the outer peripheral surface is formed at the center in the vertical direction of the outer peripheral surface. The convex portion 11 </ b> A has an inclined surface that spreads outward toward the lower side, and a horizontal plane that is bent inward at an acute angle from the lower end of the inclined surface and is orthogonal to the outer peripheral surface of the upstream opening 11.

  A packing 20 is fitted on the outer peripheral surface of the upstream opening 11. The packing 20 has a cylindrical body portion 20A and an annular upper surface portion 20B extending inwardly from the upper end portion of the body portion 20A. A concave portion 20 </ b> C that bulges from the inside to the outside is formed at the center in the vertical direction of the body portion 20 </ b> A of the packing 20. The concave portion 20 </ b> C accommodates the convex portion 11 </ b> A formed on the outer peripheral surface of the upstream opening 11, and prevents the packing 20 from coming off from the outer peripheral surface of the upstream opening 11. Further, a tightening belt 21 is fastened to the outer peripheral surface of the lower portion of the packing 20 to prevent the packing 20 from coming off from the outer peripheral surface of the upstream opening 11.

  The end portion of the toilet discharge pipe 4 that forms the toilet drainage channel 3 of the toilet main body 1 is inserted into the central opening of the upper surface portion 20B of the packing 20 from above. At this time, the central opening of the upper surface portion 20 </ b> B of the packing 20 is elastically deformed and slidably contacts the outer peripheral surface of the toilet drainage pipe 4. Thereby, the toilet bowl discharge pipe 4 and the drainage connector 10 are connected in a watertight state.

  The descending pipe portion 12 has an annular throttle portion 15 formed to extend outward from the upper end portion. The outer peripheral edge portion of the throttle portion 15 is continuous with the lower end portion of the upstream opening portion 11. As described above, the flow path area in the central opening 15 </ b> A of the throttle part 15 is smaller than the flow path area of the upstream opening 11. For this reason, the drainage discharged from the discharge port 3 </ b> A of the toilet drainage channel 3 and flowing down from the upstream opening 11 collides with the upper surface of the throttle unit 15 and scatters. Thereby, a water film is formed, and the upstream opening 11 and the toilet drainage channel 3 upstream of the throttle portion 15 can be sufficiently filled with drainage, and siphon action can be generated early. For this reason, the waste water from the toilet body 1 can be discharged well using the siphon action.

  In the downward flow path L1, the inner wall on the front surface side and the inner wall on the rear surface surface that face each other perpendicularly to the flow path direction are approaching downward from the upstream end portion 12A. Further, the descending flow path L1 is inclined backward from the upstream end portion 12A to the intermediate portion 12B. For this reason, in the intermediate portion 12B, the drainage that flows down from the upstream opening 11 along the inner wall on the front side scatters toward the inner wall on the rear side. Thereby, a water film is formed in the intermediate part 12B, and the downflow path L1 upstream from the water film can be filled with drainage. For this reason, the siphon action can be developed into a stronger siphon action at the intermediate portion 12B while the siphon action is generated at an early stage by the throttle portion 15 formed at the upper end portion of the descending pipe portion 12.

  Further, as shown in FIG. 3, in the descending flow path L1, the flow path width in the left-right direction gradually increases from the upstream end portion 12A toward the intermediate portion 12B. For this reason, even if the channel width in the front-rear direction decreases, the decrease in the channel area of the descending channel L1 is suppressed. Therefore, the drainage performance of the drainage coupler 10 can be maintained satisfactorily.

  As shown in FIG. 1 to FIG. 4, a corner portion C in which the flow path direction changes to the horizontal pulling flow path L2 is formed by the downstream end of the descending flow path L1 and the upstream end of the horizontal pulling flow path L2. ing. The left and right channel width X2 of the horizontal pulling channel L2 that is the outlet side of the corner portion C is formed larger than the channel width X1 in the left and right direction of the descending channel L2 that is the inlet side of the corner portion C.

  When drainage that has flowed in from the upstream opening 11 flows down the downflow channel L1 and the horizontal pulling channel L2, a stagnation portion Y is formed on the outlet side of the corner portion C. That is, on the outlet side of the corner portion C where the flow path direction changes in the direction of the horizontal pulling flow path L2, the flow of the drainage is peeled off from the upper wall of the horizontal pulling flow path L2, and a stagnation portion Y is formed. The The left and right channel width X2 of the horizontal pulling channel L2 on the outlet side of the corner portion C is made larger than the horizontal channel width X1 of the descending channel L1 on the inlet side of the corner portion C. Since the flow passage area of the horizontal pulling flow passage L2 is enlarged in the region where the stagnation is formed, even if the stagnation portion Y is formed, the drainage can flow down well. For this reason, it is possible to prevent a decrease in the discharge flow rate per unit time of the drainage connector 10.

Therefore, the drainage connector 10 of the reference example can discharge the wastewater from the toilet body 1 satisfactorily.

  The horizontal pulling pipe portion 13 forming the horizontal pulling flow path L2 is connected to the front end portion, and has a front end member 16 that changes the direction of the horizontal pulling flow path L2 downward. Below the front end member 16, a connecting member 17 having a downstream opening 14 is bonded and fixed to the front end member 16. The downstream opening 14 is inserted into the inlet 5A of the pipe 5, and the outer peripheral surface of the downstream opening 14 and the inner peripheral surface of the inlet 5A are bonded. In this way, the drainage connector 10 and the drain pipe 5 are connected in a watertight state.

  As shown in FIG. 5, the horizontal pulling tube portion 13 can cut an arbitrary position on the front end side. For this reason, according to the change of the position of the inlet 5A of the drain pipe 5 that opens upward, that is, the change of the distance between the outlet 3A of the toilet drainage channel 3 and the inlet 5A of the drain pipe 5, The front end side of the part 13 can be cut, and the outlet 3A of the toilet drainage channel 3 and the inlet 5A of the drainage pipe 5 can be connected.

<Example 1 >
As shown in FIGS. 6 and 7, in the drainage connector 110 of the first embodiment, the horizontal channel width of the descending channel L1 extends from the upstream end portion 12A to the horizontal pulling channel L2 on the outlet side of the corner portion C. The left and right inner walls 12C are gradually enlarged, and the left and right inner walls 13A are smoothly continuous with the left and right inner walls 13A at the upstream end of the laterally drawn flow path L2 on the outlet side of the corner portion C. Other configurations are the same as those in the reference example , and the same components are denoted by the same reference numerals and detailed description thereof is omitted.

  In this drainage connector 110, it is possible to prevent the channel width in the left-right direction from abruptly expanding in the horizontal pulling channel L2 on the outlet side of the corner portion C from the upstream end 12A of the descending channel L1. For this reason, it is possible to suppress the turbulence of the flow in the descending flow path L1 and the horizontal pulling flow path L2 due to the sudden expansion of the flow path width in the left-right direction. Therefore, drainage can be made to flow down well in the horizontal pulling channel L2.

  Further, since the left and right inner walls 12C of the descending flow path L1 are smoothly connected to the left and right inner walls 13A at the upstream end of the horizontal pulling flow path L2 on the outlet side of the corner portion C, the flow in the horizontal pulling flow path L2 is smoother. The drainage can be made to flow well.

  Further, the left and right channel width X2 of the horizontal pulling channel L2 on the outlet side of the corner portion C is made larger than the left and right channel width X1 of the descending channel on the inlet side of the corner portion C. Since the flow passage area of the horizontal pulling flow passage L2 is enlarged in the region where the stagnation is formed, even if the stagnation portion Y is formed, the drainage can flow down well. For this reason, a decrease in the discharge flow rate per unit time of the drainage coupler 110 can be prevented.

Therefore, the drainage connector 110 of Example 1 can also discharge the wastewater from the toilet body 1 satisfactorily.

<Example 2 >
As shown in FIG. 8, in the drainage connector 210 of the second embodiment, the horizontal pulling flow path L < b > 2 is bent downward immediately from the outlet Z side of the corner portion C. A downstream opening 214 that opens downward and connects to the inflow port 5 </ b> A of the drain pipe 5 is provided at the downstream end of the horizontal pipe 213 that forms the horizontal flow path L <b> 2. In the drainage coupler 210, as in the drainage coupler 110 of the first embodiment, the channel width in the left-right direction of the descending channel L1 extends from the upstream end 12A to the horizontal pulling channel L2 on the outlet Z side of the corner C. It gradually expands and smoothly continues to the left and right inner walls of the upstream end portion of the horizontal pulling channel L2. Other configurations are the same as those of the reference example and the like, and the same components are denoted by the same reference numerals and detailed description thereof is omitted.

  In this drainage connector 210, by making the horizontal channel width of the horizontal pulling channel L2 on the outlet side of the corner C larger than the horizontal channel width of the descending channel L1 on the inlet side of the corner C. In the region where the stagnation part Y is formed, the flow passage area of the horizontal pulling flow path L2 is enlarged, so that even if the stagnation part Y is formed, the drainage can flow down well. For this reason, it is possible to prevent a decrease in the discharge flow rate per unit time of the drainage coupler 210.

Therefore, the drainage connector 210 of Example 2 can also discharge the wastewater from the toilet body 1 satisfactorily.

<Example 3 >
As shown in FIGS. 9 and 10, the drainage connector 310 according to the third embodiment includes an outlet 35 </ b> A of the drainage pipe 35 drawn laterally from the outlet 3 </ b> A of the toilet drainage channel 3 and the wall surface W of the toilet room R. Can be linked. The drainage connector 310 includes an upstream opening 11 connected to the discharge port 3A of the toilet drainage channel 3, a descending pipe portion 312 that forms a downward flow path L1 extending downward from the upstream opening 11, and a descending A horizontal pulling pipe portion 313 that forms a horizontal pulling flow path L2 extending rearward (laterally) from the lower part of the flow path L1 and inclined upward toward the downstream side, and provided at the downstream end of the horizontal pulling pipe part 313. , And a downstream opening 314 that opens rearward. The downstream opening 314 is inserted into the inflow port 35 </ b> A of the drain pipe 35 via the packing P. In this way, the drainage coupler 314 and the drainage pipe 35 are connected in a watertight state. Other configurations are the same as those of the reference example and the like, and the same components are denoted by the same reference numerals and detailed description thereof is omitted.

  In the downward flow path L1, the inner wall on the front side and the inner wall on the rear side that face each other perpendicular to the flow path direction are approaching from the upstream end 12A downward. The descending flow path L1 is inclined forward and downward from the upstream end portion 12A to the intermediate portion 12B. For this reason, in the intermediate portion 12B, the drainage flowing down from the upstream opening 11 along the inner wall on the rear surface side is scattered toward the inner wall on the front surface side. Thereby, a water film is formed in the intermediate part 12B, and the downflow path L1 upstream from the water film can be filled with drainage. For this reason, the siphon action can be developed into a stronger siphon action at the intermediate portion 12B while the siphon action is generated at an early stage by the throttle portion 15 formed at the upper end of the downcomer pipe portion 312.

  In addition, the channel width in the left-right direction of the descending channel L1 gradually increases from the upstream end 12A to the horizontal channel L2 on the outlet side of the corner portion C (X0 <X1 <X2), and the left and right sides of the descending channel L1 The inner wall smoothly continues to the left and right inner walls at the upstream end of the laterally drawn flow path L2 on the outlet side of the corner portion C. For this reason, the flow in the horizontal pulling flow path L2 can be made smooth, and the drainage can flow down well.

  Moreover, even if the flow path width in the front-rear direction gradually decreases in the descending flow path L1, the flow path width in the left-right direction gradually increases, so that the flow path area of the descending flow path L1 can be secured to a predetermined area or more. it can. For this reason, the drainage performance of the drainage coupler 310 can be maintained satisfactorily.

Further, in this drainage connector 310, the lateral width X2 of the horizontal pulling flow path L2 on the outlet side of the corner portion C is greater than the lateral width X1 of the descending flow path L1 on the inlet side of the corner portion C. By increasing the size, the flow passage area of the horizontal pulling flow path L2 is enlarged in the region where the stagnation part Y is formed, so that even if the stagnation part Y is formed, the drainage can flow down well. Particularly, in this drainage connector 310, since the horizontal pulling flow path L2 is inclined upward toward the downstream side, the corner portion C has an acute angle, and the stagnation portion Y is larger than those in the first and second embodiments. It becomes. For this reason, enlarging the channel area of the horizontal pulling channel L2 increases the effect of draining the drainage well. In this way, a decrease in the discharge flow rate per unit time of the drainage connector 310 can be prevented.

Therefore, the drainage connector 310 of Example 3 can also discharge the wastewater from the toilet body 1 satisfactorily.

The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention.
(1) In Examples 1 to 3 , the throttle portion is formed at the upper end portion of the downcomer pipe portion, but the throttle portion may not be formed at the upper end portion of the downcomer pipe portion.
(2) In Examples 1 to 3 , in the descending channel, the inner wall on the front side and the inner wall on the rear side facing each other perpendicular to the channel direction are brought close to each other. The inner wall on the side may not be brought close to.
(3) In Examples 1 to 3 , the downward flow path is inclined downward or forward or backward, but the downward flow path may be extended vertically downward without being inclined.
(4) In Examples 1 to 3 , the width of the channel in the left-right direction of the descending channel is expanded by a smooth curved surface, but may be expanded in stages.
(5) In Example 3 , the horizontal channel is inclined upward toward the downstream side, but the horizontal channel may be inclined horizontally or downward toward the downstream side.

DESCRIPTION OF SYMBOLS 1 ... Toilet body 2 ... Toilet bowl 3 ... Toilet drainage channel 3A ... Discharge port 5, 35 ... Drain pipe 5A, 35A ... Inlet port 10, 110, 210, 310 ... Drainage connector 11 ... Upstream side opening 12, 312 ... Down pipe part 12A ... Upstream end part 12B ... Intermediate part 13, 213, 313 ... Horizontal drawing pipe part 14, 214, 314 ... Downstream side opening part 15 ... Constriction part C ... Corner part L1 ... Downward flow path L2 ... Horizontal drawing flow Road R ... toilet room

Claims (3)

A drainage connector that connects the outlet of the toilet drainage channel connected to the downstream side of the toilet bowl provided in the toilet bowl main body and the inlet of the drain pipe that opens into the toilet room where the toilet bowl main body is installed. Because
An upstream opening connected to the outlet;
A descending pipe portion that forms a downward flow path extending downward from the upstream opening;
A transverse pipe portion that forms a transverse passage extending in the lateral direction from the lower portion of the descending passage;
Provided at the downstream end of the horizontal pulling pipe portion, and provided with a downstream opening connected to the inflow port,
The downstream end portion of the descending flow channel and the upstream end portion of the horizontal pulling flow channel form a corner portion in which the flow channel direction changes to the horizontal pulling flow channel direction. lateral direction of the channel width of the pull channel is much larger than the lateral direction of the channel width of the downward flow passage is an inlet side of the corner portion,
The drainage connecting device according to claim 1, wherein the descending channel has a channel width gradually increasing in the left-right direction from the upstream end to the horizontal channel on the outlet side of the corner .   The descending channel is inclined forward or backward from the upstream end toward the lower side while the inner wall on the front side and the inner wall on the rear side facing each other perpendicular to the channel direction are approaching each other. The drainage connector according to claim 1. 3. The drainage connector according to claim 1 , wherein the downcomer pipe portion includes a throttle portion formed at an upper end portion and having a flow passage area reduced from the upstream opening portion .

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