JP2005240351A - Bathtub drainage structure - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To prevent a closed space formed on the outer surface side of a bathtub from forming humid environment. <P>SOLUTION: A drain port 2 provided in a bathtub bottom part 1a is connected to an auxiliary drain port 4 of a backing material 10 by a bathtub drain pipe 3. A main trap member 7 provided at a main drain port 6 in a region of a washing place floor part 20 is put in water flow communication with an auxiliary trap member 5 provided at the auxiliary drain port 4, by a communicating pipe 9. A cover member 11 connecting the bathtub drain pipe 3 to the auxiliary trap member 5 is hangingly provided with water pipes 15, and water passages 15a of the water pipes 15 are set to reach into sealing water 12 from the upper face part of a mounting cover. A contact area of the sealing water 12 stored in the auxiliary trap member 5, and the closed space C on the outer surface of the bathtub 1, is thereby only the cross-sectional area of the water passages 15a, so that the quantity of steam evaporating into the closed space C is suppressed to an extremely small quantity. Consequently, water accumulated on the backing material 10 for some reason can be drained to the auxiliary trap member 5 through the water pipes 15 of the mounting cover 11. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a technique for preventing a closed space formed on a lower surface side of a bathtub installed in a bathroom from becoming a humid environment.

  In Patent Document 1, a bathtub pan trap is provided in a waterproof pan as a drainage structure for discharging water from a bathtub placed on the waterproof pan, and the bathtub pan trap and the bathtub drain outlet are connected by a bathtub drain pipe. And the structure which connects a bathtub pan trap and the washing place pan trap provided in the drain outlet of the washing place with a drain pipe is proposed.

In the drainage structure described in Patent Document 1, a lid member for connecting a bathtub drain pipe is attached to the inflow opening of the bathtub pan trap. And many water flow holes for making the water which flows on a waterproof pan on the lower surface side of a bathtub flow out to a bathtub pan trap are formed in this lid member.
JP 2003-253722 A

  In the bathtub drainage structure described in Patent Document 1, since the lid member of the bathtub pan trap has a large number of water passage holes, the water vapor evaporated from the sealed water stored in the bathtub pan trap is, It evaporates through the water passage hole into a closed space between the bottom bottom surface of the bathtub and the waterproof pan. In particular, when the temperature of discharged hot water is high, a large amount of steam may be trapped in the closed space. As a result, the enclosed space becomes a humid environment, and there is a possibility that the generation of sputum and the propagation of various germs may be caused.

  In view of the conventional problems, the feature of the bathtub drainage structure adopted by the present invention is formed between the outer surface including at least the bottom of the bathtub and a base material such as a waterproof pan on which the bathtub is installed. In the closed space, the bathtub drain outlet formed at the bottom of the bathtub and the sub drain outlet formed in the base material are connected by a bathtub drain pipe, and the main drain outlet connected to the main drain pipe is formed in the washing place. The main trap member provided and the sub trap member provided at the sub drain outlet are connected by a communication pipe, and a mounting lid for connecting the bathtub drain pipe to the sub drain outlet is attached to the mounting lid. In this case, a water pipe extending from the upper surface portion to the sealed water stored in the sub trap member is suspended.

  In the bathtub drainage structure, the water passage in the water pipe of the mounting lid may be set so that the opening area of the lower end opening is smaller than the opening area of the upper end opening.

  In the bathtub drainage structure according to claim 1 of the present invention, a water pipe is suspended from a mounting lid that connects the bathtub drain pipe to the sub drain port, and the water pipe is connected to the sub trap member from the upper surface of the mounting lid. Since it is configured to reach the stored sealed water, the contact area between the sealed water stored in the sub trap member and the closed space formed on the outer surface side of the bathtub is the cross-sectional area of the water passage in the water pipe. Limited to Therefore, since the amount of water evaporation from the sealed water of the auxiliary trap member to the closed space can be suppressed to a very low level, the closed space is prevented from becoming a humid environment, and soot is generated and various bacteria are propagated. Is prevented. Further, even if water accumulates on the base material for some reason, this water can be discharged from the water passage of the mounting lid to the sub trap member.

  Moreover, since the trap member is provided not only in the main drainage port of the washing place but also in the auxiliary drainage port formed in the base material, the backflow of odor from the bathtub drainage port into the bathtub is prevented. Further, since the main trap member of the main drain port and the sub trap member of the sub drain port are communicated with each other through the communication pipe, water for forming a water seal in the main trap member can be supplied by bathtub drainage. .

  According to the bathtub drainage structure according to claim 2 of the present invention, the water passage in the water pipe of the mounting lid is set so that the opening area of the lower end opening is smaller than the opening area of the upper end opening. Since the contact area between the sealed water of the trap member and the closed space can be set smaller, the effect of suppressing the closed space from being in a humid environment is improved. And since the opening area of the upper end side in a water flow path can be enlarged, the discharge efficiency of the water which accumulates in a base material is not impaired.

  Drawing 1 is a drawing which illustrates the construction situation of the bathtub in which the drainage structure concerning the present invention is applied. As shown in the figure, a bathtub 1 is placed on a base material 10 such as a waterproof pan installed on a foundation F, an apron 30 is mounted on the front side of the bathtub 1, and a rear edge is attached to a frame wall W. A wall finish 40 is erected. Therefore, the space between the bathtub outer surface including the lower surface of the bathtub bottom 1a and the base material 10 is a substantially closed space C partitioned by the apron 30 and the frame wall surface W.

  One end of the bathtub drain pipe 3 is connected to the drain port 2 provided in the bottom 1 a of the bathtub 1, and the other end of the bathtub drain pipe 3 is connected to the sub drain port 4 provided in the base material 10. . A sub trap member 5 for forming a water seal is attached to the sub drain port 4. Moreover, the base material 10 of this example has a region for constructing the washing floor 20, and a main drainage port 6 is formed in the same region for discharging the water that has flowed to the washing floor 20. A main trap member 7 for forming sealed water is provided at the main drain port 6. A main drain pipe 8 is connected to the main trap member 7 and a communication pipe 9 is connected to the sub trap member 5 so as to allow water to pass therethrough.

  As shown in FIG. 2, a lid member 11 is attached to the sub drain port 4 in order to connect the bathtub drain pipe 3 to the sub trap member 5. The present invention is characterized in that a water pipe 15 is suspended from the lid member 11 and the water passage 15 a of the water pipe 15 is set so as to extend from the upper surface of the mounting lid 4 to the inside of the sealed water 12. Therefore, the contact area between the sealed water 12 stored in the sub trap member 5 and the closed space C on the outer surface of the bathtub 1 is only the cross-sectional area of the water passage 15a. The amount can be kept very low. Therefore, it is possible to reliably prevent the closed space C from becoming a humid environment. Further, the water accumulated in the base material 10 for some reason can be discharged to the sub trap member 5 through the water pipe 15 of the mounting lid 11. In addition, the sub trap member 5 provided in the sub drain port 4 exhibits a function of preventing malodor from flowing back into the bathtub 1 from the drain pipe when the plug 1b attached to the bathtub drain port 2 is opened. .

  By the way, since this invention employ | adopted the structure which connects the sub trap member 5 and the main trap member 7 with the communication pipe 9, the water 12 of the sub trap member 5 and the main trap member 7 of drainage from the bathtub 1 are used. Water can be supplied to the sealed water 13. In addition, in this example, since the lower end level 7c of the outlet 7b to which the main drain pipe 8 is connected in the main trap member 7 is set so as not to be lower than the upper end level 9a of the communication pipe 9, it is stored in the main trap member 7. The sealed water 13 can flow into the sub trap member 5. Therefore, even if the drainage from the bathtub 1 is not performed for a long period of time, if there is drainage at the washing place, water supply to the sealing water of the sub trap member 5 is performed, so that it is possible to avoid running out of sealing water. is there.

  In addition, in this example, since the lower end level 7c of the outflow port 7b and the upper end level 9a of the communication pipe 9 are substantially matched, the water level of the sealing water 12 of the sub trap member 5 can be prevented from becoming too high. Therefore, the sub trap member 5 can be made compact. Further, since the bottom level 7a of the main trap member 7 is set to be equal to or lower than the bottom level 5a of the sub trap member 5, the sealing water of the main trap member 7 is secured with priority, and the main drain pipe 8 is connected to the washing place. Ensures the prevention of odor backflow.

  In the bathtub drainage structure according to the present invention, as shown in FIG. 3, the form of the water passage 15 a in the water pipe 15 of the mounting lid 11 is such that the opening area of the lower end opening is smaller than the opening area of the upper end opening. Can be set to Specifically, it is possible to set the cross-sectional area of the water passage 15a to be small until the stored water level of the sealed water 12 is small, and to set the cross-sectional area of the water passage 15a to be enlarged above the water level of the sealed water 12. Conceivable.

  With this configuration, since the opening area of the lower end opening in the water passage 15a is set small, the contact area between the sealed water stored in the sub trap member 5 and the closed space C can be kept relatively small. Therefore, the effect of suppressing the enclosed space C from being in a humid environment is not impaired. And since the opening area of the upper-end opening part of the water flow path 15a is set large, the discharge efficiency of the water which accumulates in the base material 10 improves.

It is side surface sectional drawing which shows an example of the construction condition of the bathtub to which the drainage structure which concerns on this invention is applied. It is side surface sectional drawing which shows one Embodiment of the bathtub drainage structure which concerns on this invention. It is side surface sectional drawing which shows other embodiment of the bathtub drainage structure which concerns on this invention.

Explanation of symbols

C ... Closed space F ... Foundation W ... Body wall surface 1 ... Bathtub 1a ... Bathtub bottom 2 ... Bathtub drainage port 3 ... Bathtub drain pipe 4 ... Sub drainage port 5 ... Sub trap member 5a ... Bottom level 6 ... Main drainage port 7 ... Main Trap member 7a ... Bottom level 7b ... Outlet 7c ... Lower end level 8 ... Main drain pipe 9 ... Communication pipe 10 ... Base material 11 ... Cover member 15 ... Water pipe 15a ... Water passage

Claims (2)

  In a closed space formed between an outer surface including at least the bottom of the bathtub and a base material such as a waterproof pan in which the bathtub is installed, the bathtub drain port formed in the bottom of the bathtub and the base material are formed. The main trap member provided in the main drain port connected to the sub drain port by the bathtub drain pipe and formed in the washing place and connected to the main drain pipe, and the sub trap member provided in the sub drain port are connected by the communication pipe. A drainage structure that is communicated with a mounting lid for connecting the bathtub drainage pipe to the auxiliary drainage port, and in the sealed water stored in the auxiliary trap member from the upper surface of the mounting lid Bathtub drainage structure characterized in that a water pipe leading to is suspended.   The bathtub drainage structure according to claim 1, wherein the water passage in the water pipe of the mounting lid is set such that the opening area of the lower end opening is smaller than the opening area of the upper end opening.