JP2011074611A - Drain trap for urinal - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a drain trap for urinal, which prevents the emission of odor for a long period. <P>SOLUTION: The drain trap 10 for urinal includes a lid 11 with an inlet 11A, a body 12 with an outlet 12C and a cylindrical partition wall 13. The interior of the body 12 is divided into a first and second regions 31, 32 which are communicated with each other by means of a third region 33. The first region 31 is poured with a sealing liquid which is non-water-soluble, lighter than urinal in specific gravity and forms a sealing layer S above the stored urinal. The inlet 11A is penetrated at the position where the urinal flows in the first region 31 from above. The outlet 12C is located in the second region 32, opened upward from the lower end of the partition wall 13. The side face of a sidewall 12A facing the first region 31 formed with the sealing layer S is recessed and projecting 40. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a urinal drain trap.

  FIG. 1 of Patent Document 1 discloses a conventional urinal drain trap. The urinal drain trap is formed in a cartridge form and includes a lid, a main body, and a partition. The lid has a circular shape in plan view and fits into an opening provided at the lower end of the bowl surface of the urinal. The lid portion is provided with an inflow port through which the urine that has flowed down along the bowl surface flows. The main body includes a cylindrical side wall formed to extend downward from the outer peripheral edge of the lid, a bottom formed continuously at the lower end of the side wall, and an outlet from which stored urine overflows. have. The partition wall portion extends downward from the lower surface on the inner side of the outer peripheral edge portion of the lid portion, and is formed with a space between the bottom portion. The partition wall has a cylindrical shape with an open lower end.

  The inside of the main body is partitioned by a partition wall into a first region formed outside the partition wall and a second region formed inside. The first region and the second region are communicated with each other by a third region formed below the lower end of the partition wall and above the bottom. In the first region, a seal solution that is insoluble in water and has a specific gravity lower than that of urine is injected, and a seal layer is formed above the stored urine.

  The inflow port penetrates the first region at a position where urine flows from above. The outflow port rises from the bottom of the main body in the second region and is formed at the upper end of a cylindrical outflow pipe disposed concentrically with the partition wall.

Japanese Patent No. 3515785

  However, in the conventional urinal drain trap, when the urine flowing from the inflow port penetrates the seal layer and flows from the first region to the third region, the seal layer is agitated and the seal liquid is drawn downward from the seal layer. . Part of the sealing liquid drawn below the sealing layer may ride on the flow of urine, pass through the lower end of the partition wall, and be transported to the second region. Since the specific gravity of the sealing liquid conveyed to the second region is lighter than that of urine, the buoyancy increases the second region. Thus, the sealing liquid conveyed to the second region cannot return to the first region and flows out from the outlet. For this reason, the seal liquid gradually flows out from the outlet through long-term use, so that the seal liquid decreases and the seal layer becomes thin. If the seal layer is thin, the stored urine odor may be emitted from the inflow port.

  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 trap for urinals which can prevent odor emission for a long term.

The urinal drain trap of the present invention is fitted with an opening provided at the lower end of the bowl surface of the urinal, and a lid portion having an inlet into which urine flowing down along the bowl surface flows,
A main body having a side wall formed extending downward from the outer peripheral edge of the lid, a bottom formed continuously at the lower end of the side wall, and an outlet from which stored urine overflows;
Provided inside the outer peripheral edge portion of the lid portion, the lower end is provided with a cylindrical partition wall portion opened with an interval between the bottom portion of the main body portion,
The inside of the main body is partitioned by the partition wall into a first region formed outside the partition wall portion and a second region formed inside, and the first region and the second region are formed from a lower end of the partition wall portion. Communicated by a third region formed below and above the bottom,
One of the first region and the second region is a urinal drainage trap that is insoluble in water, has a specific gravity lighter than urine, and is injected with a sealing liquid that forms a sealing layer above the stored urine. There,
The inflow port passes through one of the first region and the second region at a position where urine flows from above, and the outflow port is in the other region of the first region or the second region. And open upward from the lower end of the partition wall,
An unevenness is provided on a side surface of the side wall portion and / or the partition wall portion of the main body portion facing one region of the first region or the second region where the seal layer is formed. To do.

  In this urinal drain trap, irregularities are provided on the side wall portion of the main body portion and / or the side surface of the partition wall portion facing one of the first region and the second region where the seal layer is formed. For this reason, in the 1st field or 2nd field in which a seal layer is formed, the contact area of the edge of a seal layer, the side wall of a main part, and / or the side of a partition can be enlarged. Thereby, the unevenness | corrugation becomes resistance and the seal liquid in a seal layer becomes difficult to be drawn below from a seal layer by the urine which flows in from an inflow port. Therefore, it becomes difficult for the seal liquid to be conveyed downstream from the seal layer by the flow of urine. That is, it is possible to suppress the sealing liquid from being conveyed to the second region via the third region and flowing out from the outlet. For this reason, even if it is used for a long time, the reduction | decrease of a sealing liquid can be suppressed and a sealing layer does not become thin easily.

  Therefore, the drainage trap for urinals of the present invention can prevent odor emission over a long period of time.

  The unevenness may be formed only at a height at which the seal layer is formed. In this case, it is possible to prevent the gel-like urine stone from adhering to the side wall portion and / or the side surface of the partition wall portion below the seal layer. For this reason, clogging due to accumulation of gel-like urine stones can be suppressed.

  The urinal drain trap may be formed in the form of a cartridge to which a drain pipe is connected and which is detachably attached to a recess opened upward at the lower end of the bowl surface of the urinal. In this case, the cartridge can be replaced when the sealing liquid is reduced or clogging occurs due to the accumulation of gel-like urine stones. Thus, maintenance can be performed easily.

It is sectional drawing which shows the urinal which has the drainage trap for urinals of Example 1. FIG. It is sectional drawing which shows the drainage trap for urinals of Example 1. FIG. It is a disassembled perspective view which shows the drain trap for urinals of Example 1. FIG. It is sectional drawing which shows the drainage trap for urinals of Example 2. FIG. It is sectional drawing which shows the drainage trap for urinals of Example 3. It is sectional drawing which shows the drainage trap for urinals of Example 4. It is sectional drawing which shows the drainage trap for urinals of Example 5.

  Embodiments 1 to 5 embodying the urinal drain trap of the present invention will be described with reference to the drawings.

  As shown in FIGS. 1 to 3, the urinal drain trap 10 according to the first embodiment is formed in a cartridge shape, and is detachable from a recess 3 that opens upward at the lower end of the bowl surface 2 of the urinal 1. It is attached. The urinal 1 is a wall-hanging type and is locked and fixed to the wall surface W of the toilet room R. The concave portion 3 is attached to the lower end portion of the bowl surface 2 of the urinal 1 and is formed by a cylindrical storage container 20 having an open upper end and a bottom portion.

  A locking member 21 is connected to the upper end of the storage container 20. The locking member 21 is connected to the upper inner surface of the storage container 20 and has a cylindrical cylindrical portion 21A extending upward and a ring-shaped flange portion 21B extending outward from the upper end of the cylindrical portion 21A. A locking recess 20 </ b> A is formed in an intermediate portion of the inner side surface of the storage container 20. A locking convex portion 12F provided on the side wall portion 12A of the main body portion 12 of the urinal drain trap 10 to be described later is locked to the locking concave portion 20A. By rotating the urinal drain trap 10 inserted into the storage container 20 by a predetermined angle around the axis, the locking projection 12F can be locked to the locking recess 20A. In this manner, the urinal drain trap 10 in the form of a cartridge can be detachably attached to the storage container 20.

  The storage container 20 has a packing 22 fitted on the outer surface of the locking member 21 and is inserted from above into an opening 2A formed at the lower end of the bowl surface 2 of the urinal 1. The flange portion 21B of the locking member 21 is locked to the upper surface of the peripheral edge portion of the opening 2A. A ring-shaped fastening member 23 that is externally fitted from the lower side of the storage container 20 and whose upper surface engages with the lower surface of the peripheral edge of the opening 2A is screwed into the screw portion formed on the upper portion of the outer surface of the storage container 20. Yes. Thus, the storage container 20 is attached to the opening 2A by sandwiching the peripheral edge portion of the opening 2A by the flange portion 21B of the locking member 21 and the fastening member 23. The storage container 20 has a connecting tube 24 extending from the lower end corner. The storage container 20 is connected to the drain pipe 4 drawn to the wall surface W through the connecting pipe 21.

  The urinal drain trap 10 formed in a cartridge form includes a lid portion 11, a main body portion 12, and a partition wall portion 13. The outer shape of the lid 11 is circular. The lid 11 is fitted into an opening formed by the locking member 21 of the storage container 20, that is, an opening provided at the lower end of the bowl surface 2 of the urinal 1. A packing P is fitted in an annular recess formed on the outer peripheral end surface of the lid portion 11. For this reason, the inner surface of the opening formed by the locking member 21 and the outer surface of the lid portion 11 are joined in a watertight manner. For this reason, urine that has flowed down along the bowl surface 2 of the urinal 1 flows to the upper surface of the lid 11. The lid 11 is provided with an inflow port 11A through which urine that has flowed down along the bowl surface 2 of the urinal 1 flows.

  The main body 12 has a side wall 12A, a bottom 12B, and an outlet 12C. The side wall portion 12 </ b> A has a cylindrical shape and extends downward from the outer peripheral edge portion of the lid portion 11. An internal gear-shaped concavo-convex member 41 having teeth on the inner peripheral surface is fitted into the side wall portion 12A. The concavo-convex member 41 is disposed at a height where the outer peripheral surface is bonded to the inner peripheral surface of the side wall portion 12A and the seal layer S is formed. In this way, the side surface of the side wall portion 12A is constituted by a plurality of ridges 42 arranged at equal intervals in the circumferential direction of the side wall portion 12A and extending in the axial direction only at the height at which the seal layer S is formed. Concavities and convexities 40 are provided. The outer peripheral edge portion of the lid portion 11 and the upper end portion of the side wall portion 12A are bonded without a gap.

  A plurality of locking projections 12F are formed at the intermediate portion of the outer surface of the side wall portion 12A. As described above, the urinal drain trap 10 in the form of a cartridge is detachably attached to the storage container 20 by the locking protrusion 12F being locked to the locking recess 20A formed on the inner surface of the storage container 20. It has been. The bottom 12B is formed continuously with the lower end of the side wall 12A.

  The partition wall portion 13 has a cylindrical shape, is provided on the inner side of the outer peripheral end portion of the lid portion 11, extends downward from the closed upper end, and the lower end opens with a gap between the bottom portion 12 </ b> B of the main body portion 12. Yes. The partition wall 13 is provided coaxially with the lid 11. In the lid portion 11, an inflow port 11 </ b> A divided into a plurality along the outer surface of the partition wall portion 13 is arranged in a ring shape.

  The inside of the main body 12 is partitioned by the partition wall 13 into a first region 31 formed outside the partition wall 13 and a second region 32 formed inside. The first region 31 and the second region 32 are communicated with each other by a third region 33 formed below the lower end of the partition wall 13 and above the bottom 12B of the main body 12. The first region 31 is insoluble in water, has a specific gravity lighter than urine, and is injected with a sealing liquid that forms a sealing layer S above the stored urine.

  A ring-shaped connecting portion 14 extending in the lateral direction toward the first region 31 is formed at the outer peripheral edge portion of the lower end of the partition wall portion 13. A cylindrical folded portion 15 extending upward to the height of the intermediate portion of the partition wall portion 13 is formed at the peripheral edge portion of the connecting portion 14. The folded portion 15 has a certain distance from the partition wall portion 13. Further, the folded portion 15 is provided at a central position between the partition wall portion 13 and the side wall portion 12A. That is, the folded portion 15, the partition wall portion 13, and the main body portion 12 are arranged on the same axis. Further, the upper end of the folded portion 15 is formed to extend upward in the first region 31 to a position lower than the lower surface of the seal layer S formed above the urine stored in the main body portion 12.

  The outflow port 12 </ b> C is formed in the second region 32 at the upper end of the outflow pipe 12 </ b> D rising from the bottom 12 </ b> B of the main body 12. In addition, the outlet 12 </ b> C opens upward from the upper end of the folded portion 15. The outflow pipe 12 </ b> D is formed in a semi-cylindrical shape, and the arc-shaped outer surface is disposed in contact with the inner surface of the partition wall 13. That is, the outflow pipe 12 </ b> D is arranged at a position biased to one side in the partition wall 13 in a plan view.

  The lower part of the outflow pipe 12D is bent in the direction of the side wall part 12A along the bottom part 12B of the main body part 12. A discharge port 12E is provided through the bottom 12B at the downstream end of the outflow pipe 12D. The urinal drain trap 10 in the form of a cartridge is attached to the storage container 20 at a position where the discharge port 12E faces the upstream portion of the connecting pipe 24 of the storage container 20.

  In the urinal drain trap 10 having such a configuration, urine that has flowed from the inflow port 11 </ b> A penetrates the seal layer S and flows between the partition wall portion 13 and the folded portion 15 from above. The contact area of the sealing layer S is increased by the unevenness 40 provided by the uneven member 41 on the inner peripheral surface of the side wall portion 12A at the outer edge portion. For this reason, the sealing liquid in the seal layer S has the unevenness 40 as a resistance, and is difficult to be drawn downward from the seal layer S by urine flowing from the inflow port 11A. That is, the sealing liquid is hardly transported downstream from the sealing layer S due to the flow of urine.

  In a region (hereinafter referred to as a convection zone T) surrounded by the partition wall portion 13, the coupling portion 14, and the turn-up portion 15, the flow of urine changes from falling to rising, and convection occurs. The seal layer S is agitated by the inflow of urine, and most of the seal liquid drawn downward from the seal layer S is caught in this convection. For this reason, the sealing liquid remains in the convection zone T. When the inflow of urine disappears and the convection disappears, the sealing liquid remaining in the convection area T rises due to its buoyancy and joins the upper sealing layer S.

  Further, the urine momentum in the descending flow path D that goes over the upper end of the folded portion 15 from the convection region T and goes to the third region 33 is attenuated compared to the urine momentum when flowing into the convection region T. For this reason, the seal liquid riding on the flow of urine and overcoming the upper end of the turn-back portion 15 from the convection zone T is only transported to the intermediate position of the descending flow path D and is not easily transported to the third region 33. When the flow of urine ceases, the sealing liquid staying in the descending flow path D rises due to its buoyancy and joins the upper sealing layer S.

  In this way, it is possible to suppress the seal liquid in the seal layer S from being conveyed to the second region 32 via the third region 33 due to the flow of urine and flowing out from the outflow port 12C. For this reason, the decrease in the sealing liquid can be suppressed even after long-term use, and the sealing layer S is unlikely to become thin.

  Therefore, the urinal drain trap 10 of Example 1 can prevent the odor from spreading for a long time.

  Moreover, since the unevenness | corrugation 40 is formed only in the height in which the sealing layer S is formed, it can suppress that a gel-like urine stone adheres to the inner surface of the side wall part 12A below the sealing layer S. . For this reason, clogging due to accumulation of gel-like urine stones can be suppressed.

  Further, since the urinal drain trap 10 is formed in a cartridge form, the cartridge can be replaced when clogging occurs due to a decrease in the sealing liquid or accumulation of urine stones. For this reason, maintenance can be easily performed. In addition, the urinal drain trap is prevented from clogging due to the accumulation of gel-like urine stones, so that the cartridge replacement frequency can be reduced.

  As shown in FIG. 4, the urinal drain trap 110 according to the second embodiment has a main body 112 directly attached to the lower end of the bowl surface 2 of the urinal 1. A locking member 21 is connected to the upper end of the main body 112. The main body 112 is inserted from above the opening 2A formed at the lower end of the bowl surface 2 of the urinal 1, and the collar portion 21B of the locking member 21 is locked to the upper surface of the peripheral edge of the opening 2A. A thread portion is formed on the outer surface of the main body portion 112. A ring-shaped fastening member 23 that is externally fitted from below the main body 112 and whose upper surface engages with the lower surface of the peripheral edge of the opening 2 </ b> A is screwed into a screw portion formed on the outer surface of the main body 112. In this manner, the main body 112 is attached to the opening 2A by sandwiching the peripheral edge of the opening 2A by the flange 21B of the locking member 21 and the fastening member 23.

  Further, the main body 112 has a connecting pipe 124 extending from the lower end corner. An outflow pipe 112 </ b> D rising in the second region 32 is connected to the upstream end of the connection pipe 124. An outlet 112C is formed at the upper end of the outlet pipe 112D. The outflow port 112 </ b> C opens upward from the upper end of the folded portion 15. The outflow pipe 112 </ b> D is formed in a semi-cylindrical shape, and the arc-shaped outer surface is disposed in contact with the inner surface of the partition wall 13. That is, the outflow pipe 112 </ b> D is disposed at a position biased to one side in the partition wall 13 in a plan view. The lower end portion of the connecting pipe 124 is connected to the drain pipe 4 drawn out to the wall surface W.

  The lid 11 is detachably attached to the main body 112. For this reason, when the clogging due to the accumulation of gel-like urine in the main body 112 occurs, the lid 11 can be removed to remove the cause of the clogging. Other configurations are the same as those of the first embodiment, and the same components are denoted by the same reference numerals and detailed description thereof is omitted.

  In the urinal drain trap 110 having such a configuration as well as the urinal drain trap 10 of Example 1, the sealing layer S is provided on the inner peripheral surface of the partition wall portion 13 by the uneven member 41 at the outer edge portion. The contact area is increased by the unevenness 40. For this reason, the sealing liquid in the seal layer S has the unevenness 40 as a resistance, and is difficult to be drawn downward from the seal layer S by urine flowing from the inflow port 11A. That is, it is difficult for the sealing liquid to be conveyed downstream of the sealing layer S by the flow of urine. Therefore, it can suppress that the sealing liquid in the sealing layer S is conveyed by the flow of urine to the 2nd area | region 32 via the 3rd area | region 33, and flows out out of the outflow port 12C. For this reason, the decrease in the sealing liquid can be suppressed even after long-term use, and the sealing layer S is unlikely to become thin.

  Therefore, the urinal drain trap 110 of the second embodiment can also prevent the odor from spreading for a long time.

  In the urinal drain trap 210 of the third embodiment, as shown in FIG. 5, the outflow pipe 212 </ b> D has a cylindrical shape and is formed coaxially with the side wall 212 </ b> A of the main body 212. Further, the outflow pipe 212D is located coaxially with the partition wall 13 as well. For this reason, an ascending flow path is formed around the outflow pipe 212D with the partition wall portion 13. A discharge port 212 </ b> E that faces the upstream portion of the connecting pipe 24 of the storage container 20 is formed in the center portion of the bottom portion 112 </ b> B of the main body portion 112. Other configurations are the same as those of the first embodiment, and the same components are denoted by the same reference numerals and detailed description thereof is omitted.

  In the urinal drain trap 210 having such a configuration as well as the urinal drain trap 10 of Example 1, the sealing layer S was provided on the inner peripheral surface of the partition wall portion 13 by the uneven member 41 at the outer edge portion. The contact area is increased by the unevenness 40. For this reason, the sealing liquid in the seal layer S has the unevenness 40 as a resistance, and is difficult to be drawn downward from the seal layer S by urine flowing from the inflow port 11A. That is, it is difficult for the sealing liquid to be conveyed downstream of the sealing layer S by the flow of urine. Therefore, it can suppress that the sealing liquid in the sealing layer S is conveyed by the flow of urine to the 2nd area | region 32 via the 3rd area | region 33, and flows out out of the outflow port 12C. For this reason, the decrease in the sealing liquid can be suppressed even after long-term use, and the sealing layer S is unlikely to become thin.

  Therefore, the urinal drain trap 210 of the third embodiment can also prevent the odor from spreading for a long time.

  The urinal drain trap 310 according to the fourth embodiment includes a lid 311, a main body 312, and a partition wall 313 as shown in FIG. 6. The main body 312 has a side wall 312A, a bottom 312B, and an outlet 312C. The side wall portion 312A has a cylindrical shape, and a belt-like convex portion 312D is formed at an intermediate portion of the outer surface. The main body 312 is directly attached to the lower end of the bowl surface 2 of the urinal 1 by a locking member 321. The locking member 321 is continuous to the cylindrical portion 321A of the cylindrical shape surrounding the upper portion of the main body portion 312; the ring-shaped flange portion 321B that extends outwardly; and the lower end of the cylindrical portion 321A. And an annular recess 321C that engages with the protrusion 312D. Moreover, the locking member 321 has a semicircular arc-shaped locking portion 321D that sandwiches the peripheral edge portion of the opening 2A formed at the lower end portion of the bowl surface 2 of the urinal 1 with the collar portion 321B. . The locking portion 321D is elastically movable, elastically moves inward, passes through the opening 2A from above, and moves outward after passing. In this way, the locking portion 321D is locked to the lower surface of the peripheral edge of the opening 2A. The packing 22 is externally fitted between the flange portion 321B and the locking portion 321D.

  The side wall portion 312 </ b> A is provided with an outlet 312 </ b> C that opens upward from an upper end of a folded portion 315 described later. The main body 312 is provided with a connecting pipe 324 extending in the lateral direction from the outlet 312C. The urinal drain trap 310 is connected to the water distribution pipe 4 drawn out to the wall surface W by a connecting pipe 324 extending laterally from the upper part.

  The outer shape of the lid 311 is circular. The lid 311 fits into an opening formed by a locking member 321 that attaches the main body 312 to the lower end of the bowl surface 2 of the urinal 1, that is, an opening provided at the lower end of the bowl surface 2 of the urinal 1. It is crowded. A packing P is fitted in an annular recess formed on the outer peripheral end surface of the lid 311. For this reason, the inner surface of the opening formed by the locking member 321 and the outer surface of the lid portion 311 are joined in a watertight manner. For this reason, urine that has flowed down along the bowl surface 2 of the urinal 1 flows to the upper surface of the lid 311. An inflow port 311 </ b> A into which urine that has flowed down along the bowl surface 2 of the urinal 1 flows is indirectly connected to the lid 311.

  The partition wall portion 313 has a cylindrical shape, is provided on the inner side of the outer peripheral end portion of the lid portion 311, and the lower end is opened with a space between the bottom portion 312 </ b> B of the main body portion 312. The partition wall 313 is provided on the same axis as the lid 311. An inflow port 311 </ b> A that is divided into a plurality along the inner side surface of the partition wall 313 is arranged in a ring shape on the lid 311.

  The main body 312 is partitioned by a partition wall 313 into a first region 331 formed outside the partition wall 313 and a second region 332 formed inside. The first region 331 and the second region 332 are communicated with each other by a third region 333 formed below the lower end of the partition wall 313 and above the bottom 312B of the main body 312. The second region 332 is insoluble in water, has a specific gravity lighter than that of urine, and is injected with a sealing liquid that forms a sealing layer S above the stored urine.

  The partition wall 313 is internally fitted with an internal gear-shaped concavo-convex member having teeth on the inner peripheral surface. The concavo-convex member is disposed at a height where the outer peripheral surface is bonded to the inner peripheral surface of the partition wall 313 and the seal layer S is formed. In this manner, the unevenness 340 is provided on the side surface of the partition wall 313 only at the height at which the seal layer S is formed.

  A ring-shaped connecting portion 314 extending in the lateral direction toward the second region 332 is formed at the inner peripheral edge at the lower end of the partition wall 313. A cylindrical folded portion 315 extending upward to the height of the intermediate portion of the partition wall portion 313 is formed on the peripheral edge portion of the connecting portion 314. The folded portion 315 has a certain distance from the partition wall 313. That is, the folded portion 315 and the partition wall 313 are arranged on the same axis. Further, the upper end of the folded portion 315 is formed to extend upward in the second region 332 to a position lower than the lower surface of the seal layer S formed above the urine stored in the main body portion 312.

  In the urinal drain trap 310 having such a configuration, the urine flowing from the inlet 311A passes through the seal layer S and flows between the partition wall 313 and the folded portion 315 from above. The contact area of the sealing layer S is increased by the unevenness 340 provided by the uneven member on the inner peripheral surface of the partition wall 313 at the outer edge portion. For this reason, the unevenness 340 becomes resistance in the sealing liquid in the sealing layer S, and it is difficult for the sealing liquid to be drawn downward from the sealing layer S by urine flowing from the inlet 311A. That is, the sealing liquid is hardly transported downstream from the sealing layer S due to the flow of urine.

  In the convection zone T, which is a region surrounded by the partition wall 313, the connecting portion 314, and the turn-up portion 315, the flow of urine changes from falling to rising, and convection occurs. The seal layer S is agitated by the inflow of urine, and most of the seal liquid drawn downward from the seal layer S is caught in this convection. For this reason, the sealing liquid remains in the convection zone T. When the inflow of urine disappears and the convection disappears, the sealing liquid remaining in the convection area T rises due to its buoyancy and joins the upper sealing layer S.

  Further, the urine momentum in the descending flow path D that goes over the upper end of the folded portion 315 from the convection region T and goes to the third region 333 is attenuated compared to the urine momentum when flowing into the convection region T. For this reason, the sealing liquid that rides on the flow of urine and passes over the upper end of the turn-up portion 315 from the convection zone T is only transported to the intermediate position of the descending flow path D and is not easily transported to the third region 33. When the flow of urine disappears, the sealing liquid that has convected in the descending flow path D rises due to its buoyancy and joins the upper sealing layer S.

  In this way, it is possible to suppress the seal liquid in the seal layer S from being conveyed to the second region 332 via the third region 333 by the flow of urine and flowing out from the outflow port 312C. For this reason, the decrease in the sealing liquid can be suppressed even after long-term use, and the sealing layer S is unlikely to become thin.

  Therefore, the urinal drain trap 310 of the fourth embodiment can also prevent the odor from spreading for a long time.

  Moreover, since the unevenness 340 is formed only at the height at which the seal layer S is formed, it is possible to suppress the gel-like urine stone from adhering to the inner surface of the partition wall 313 below the seal layer S. . For this reason, clogging due to accumulation of gel-like urine stones can be suppressed.

  As shown in FIG. 7, the urinal drain trap 410 according to the fifth embodiment does not have a connecting portion and a folded portion at the lower end portion of the partition wall portion 13 as compared with the urinal drain trap 10 according to the first embodiment. The main body 412 has a side wall 412A and a bottom 412B. An outflow pipe 412D that rises vertically upward in the second region 32 is formed in the bottom 412B. An outlet 412C is formed at the upper end of the outflow pipe 412D. The outflow pipe 412 </ b> D is formed in a semi-cylindrical shape, and the arc-shaped outer surface is disposed in contact with the inner surface of the partition wall 13. That is, the outflow pipe 412D is disposed at a position biased to one side in the partition wall 13 in plan view. Other configurations are the same as those of the first embodiment, and the same components are denoted by the same reference numerals and detailed description thereof is omitted.

  In the urinal drain trap 410 having such a configuration as well as the urinal drain trap 10 of Example 1, the sealing layer S was provided on the inner peripheral surface of the partition wall portion 13 by the uneven member 41 at the outer edge portion. The contact area is increased by the unevenness 40. For this reason, the sealing liquid in the seal layer S has the unevenness 40 as a resistance, and is difficult to be drawn downward from the seal layer S by urine flowing from the inflow port 11A. That is, it is difficult for the sealing liquid to be conveyed downstream of the sealing layer S by the flow of urine. Therefore, it is possible to suppress the seal liquid in the seal layer S from being conveyed to the second region 32 via the third region 33 due to the flow of urine and flowing out from the outflow port 412C. For this reason, the decrease in the sealing liquid can be suppressed even after long-term use, and the sealing layer S is unlikely to become thin.

  Therefore, the urinal drain trap 410 of the fifth embodiment can also prevent the odor from spreading for a long time.

The present invention is not limited to the first to fifth 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 1-5, although the external shape of the urinal drain trap was cylindrical, it may not be cylindrical. In this case, the partition wall portion and the folded portion may not be cylindrical, but may be a cylindrical shape along the side wall of the main body.
(2) In Examples 1-5, although the unevenness | corrugation was formed only in the height in which a seal layer is formed, you may form an unevenness | corrugation in the side surface below a seal layer.
(3) In Examples 1-5, although the unevenness | corrugation was formed by the internal gear-shaped uneven member, you may form an unevenness | corrugation directly in a side wall part or a partition part.
(4) In Examples 1-5, although the side surface of the side wall part or the partition wall part was provided with unevenness composed of a plurality of ridges arranged at equal intervals in the circumferential direction and extending in the axial direction, You may provide the unevenness | corrugation comprised by the some protruding item | line which was arranged in the direction at equal intervals and extended in the circumferential direction. The unevenness may be a dimple shape.
(5) In Examples 1-5, although the unevenness | corrugation was provided in the outer edge part side of the sealing layer, you may provide an unevenness | corrugation in the inner edge part side.

  The present invention is applicable to a urinal that does not use washing water.

DESCRIPTION OF SYMBOLS 1 ... Urinal 2 ... Bowl surface 10, 110, 210, 310, 410 ... Drainage trap for urinals 11, 311 ... Cover part 11A, 311A ... Inlet 12, 112, 212, 312, 412 ... Main part 12A, 112A, 212A, 312A, 412A ... sidewall portion 12B, 112B, 212B, 312B, 412B ... bottom portion 12C, 112C, 212C, 312C, 412C ... outflow port 13, 313 ... partition wall portion 31, 331 ... first region 32, 332 ... second Region 33, 333 ... Third region 40, 340 ... Concavity and convexity S ... Seal layer

Claims (3)

A lid portion that has an inflow port into which urine that fits into an opening provided at the lower end portion of the bowl surface of the urinal and flows down along the bowl surface,
A main body having a side wall formed extending downward from the outer peripheral edge of the lid, a bottom formed continuously at the lower end of the side wall, and an outlet from which stored urine overflows;
Provided inside the outer peripheral edge portion of the lid portion, the lower end is provided with a cylindrical partition wall portion opened with an interval between the bottom portion of the main body portion,
The inside of the main body is partitioned by the partition wall into a first region formed outside the partition wall portion and a second region formed inside, and the first region and the second region are formed from a lower end of the partition wall portion. Communicated by a third region formed below and above the bottom,
One of the first region and the second region is a urinal drainage trap that is insoluble in water, has a specific gravity lighter than urine, and is injected with a sealing liquid that forms a sealing layer above the stored urine. There,
The inflow port passes through one of the first region and the second region at a position where urine flows from above, and the outflow port is in the other region of the first region or the second region. And open upward from the lower end of the partition wall,
An unevenness is provided on a side surface of the side wall portion and / or the partition wall portion of the main body portion facing one region of the first region or the second region where the seal layer is formed. A drain trap for urinals.   The urinal drain trap according to claim 1, wherein the unevenness is formed only at a height at which the seal layer is formed.   The drainage for urinals according to claim 1 or 2, wherein a drainage pipe is connected and is formed in a cartridge form that is detachably attached to a recess opened upward at the lower end of the bowl surface of the urinal. trap.

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