JP2005281981A - Drain structure of bathroom - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a drain structure of a bathroom for preventing a bathroom user from cherishing an unpleasant feeling, by restraining generation of an air inflow sound when there is a large quantity of drain. <P>SOLUTION: A drain trap 6 id arranged in a main drain pipe 5 for draining water outside the bathroom 1 from a bathtub 2 and a washing place 3. A sub-drain pipe 7 for draining water from a place of the bathroom 1 except for the bathtub 2 and the washing place 3, is connected to a side surface of the drain trap 6. An elbow 8 is installed in an outflow port to a side surface of the drain trap 6 of the sub-drain pipe 7. An opening of the elbow 8 forming an outflow port to the drain trap 6 of the sub-drain pipe 7, is arranged downward in the vicinity of a bottom surface of the drain trap 6. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a drainage structure for a bathroom.

  In general, in the bathroom, as shown in FIG. 7, the bathtub drain pipe 13 for flowing water in the bathtub and the washing area drain section 14 for flowing water used in the washing area are joined together by a drain trap 6 embedded under the floor pan, A drainage structure in which the bathroom drain pipe 15 is connected to the main drain pipe of the building from the drain trap 6 (see, for example, Patent Document 1). In recent years, many of the entrances to the bathroom dressing room have adopted a barrier-free design that eliminates the level difference. In this case, the grating used in front of the bathroom entrance is used to prevent the water used in the washing area from flowing into the dressing room. Drainage grooves that are covered with water, etc., and the inlet / outlet drainage pipe 10 communicates with the drainage trap 6 from the drainage groove so that the water flowing into the drainage groove can be drained to the main drainage pipe of the building via the drainage trap 6. In many cases, a structure is employed (see, for example, Patent Document 2).

  Here, FIG. 7A shows a schematic top view in the vicinity of the drain trap, FIG. 7B shows a schematic cross-sectional view taken along the line CC in FIG. 7A, and FIG. The schematic sectional drawing of the DD line | wire of Fig.7 (a) is shown. The drain trap 6 is filled with water in order to cut off odors and small animals from entering the bathroom from the main drain pipe, and is normally sealed with the water level at the M line position. Yes.

However, when a large amount of bath water is drained from the bathtub 2 or the wash basin 3 through the drain trap 6 to the main drain pipe, an abrupt drainage flow is generated depending on the route of the bathroom drain pipe 15, and the drainage flow is multiplied by the drainage. The water that has sealed the pipe 10 is also drawn into the main drain pipe, and a phenomenon occurs in which the sealed water level in the inlet / outlet drain pipe 10 is temporarily lowered as indicated by the position of the M ′ line. When the sealed water level in the inlet / outlet drain pipe 10 is lower than the position of the M ′ line during this large amount of drainage, the sealed water in the inlet / outlet drain pipe 10 is broken and the bathroom air from the inlet / outlet drain pipe 10 is drained together with a large amount of drainage. There was a problem that the inflow sound such as “gobbling” generated at this time caused the bathroom user to feel uncomfortable.
JP 2000-303526 A JP 2004-84335 A

  The present invention has been invented in view of the above-described conventional problems, and is designed to prevent bathroom users from feeling uncomfortable by suppressing the generation of air inflow sound when there is a large amount of drainage. It is an object to provide a structure.

  In order to solve the above-mentioned problems, the bathroom drainage structure according to claim 1 of the present invention is provided with a drainage trap 6 in a main drainage pipe 5 that drains the bathtub 2 and the washing place 3 to the outside of the bathroom 1, and the bathtub 2 A secondary drainage pipe 7 for draining from the place of the bathroom 1 other than the washing place 3 is connected to the side of the drainage trap 6, and an elbow 8 is attached to the outlet of the secondary drainage pipe 7 to the side of the drainage trap 6. The opening of the elbow 8 serving as an outlet to the drain trap 6 of the sub drain pipe 7 is provided near the bottom of the drain trap 6 and downward.

  According to this, since the opening of the elbow material 8 serving as the outlet to the drain trap 6 of the sub drain pipe 7 is provided near the bottom surface of the drain trap 6 and downward, the sub drain pipe 7 Even if the sealing water level is lowered to a position lower than the outlet to the side surface of the drain trap 6, the sealing water in the auxiliary drain pipe 7 is broken if the sealing water level is higher than the opening of the elbow member 8. Therefore, when a large amount of waste water flows from the bathtub 2 or the washing place 3 to the main drain pipe 5 via the drain trap 6, it is difficult for the bathroom air to flow into the drain trap 6 from the sub drain pipe 7. That is, it is possible to suppress the generation of air inflow sound that makes the bathroom user uncomfortable.

  Further, the drainage structure of the bathroom according to claim 2 is the drainage structure of the entrance / exit from the drainage groove 9 provided in front of the entrance / exit 4 to the dressing room of the bathroom 1 to the drain trap 6 according to claim 1. It is characterized by comprising the tube 10. According to this, it is possible to suppress the generation of air inflow noise in the entrance / exit drain pipe 10 which generally has a relatively small pipe diameter and is likely to cause bathroom air to flow into the drain trap 6.

  According to a third aspect of the present invention, there is provided a bathroom drainage structure according to the first aspect, wherein the elbow member 8 is formed of a soft material, and the elbow member 8 is press-fitted into the outlet on the side surface of the drain trap 6 of the auxiliary drain pipe 7. It is characterized by that. According to this, the elbow material 8 can be easily attached to the outlet of the sub drainage pipe line 7.

  The bathroom drainage structure according to claim 4 is characterized in that, in claim 1, a notch 11 extending over the entire length of the pipe of the elbow member 8 is formed on the tube wall along the corner inner side of the elbow member 8. And According to this, even if the elbow member 8 is attached to the outlet of the sub drainage pipe 7 so as to be fitted from the inside, there is no step at the lower end portion between the elbow member 8 and the sub drain pipe 7, It is possible to eliminate the catch of hair and dust caused by the step.

  The bathroom drainage structure according to claim 5 is the drainage trap according to claim 1, wherein the hanging wall 12 is extended to a part of the opening edge of the elbow member 8, and the lower end surface of the hanging wall 12 is in surface contact. 6 is grounded on the bottom surface. According to this, since the hanging wall 12 of the elbow material 8 attached to the opening of the side surface of the drain trap 6 of the auxiliary drain pipe 7 is brought into contact with the bottom surface of the drain trap 6 in a surface contact state, It can prevent that 8 rotates.

  In the present invention, even when a large amount of drainage from a bathtub or washing place flows into the main drainage pipe through the drain trap, water that seals the secondary drainage pipe is drawn into the main drainage pipe. If the sealed water level of the pipeline is higher than the opening of the elbow material, the sealed water of the secondary drainage pipeline can be maintained, and bathroom air is not allowed to flow into the drain trap from the secondary drainage pipeline. This has the advantage that generation of unpleasant air inflow noise can be suppressed.

  Hereinafter, the present invention will be described based on embodiments shown in the accompanying drawings.

  1 to 5 show examples of embodiments of the present invention. As shown in FIG. 2, the bathroom 1 having the washing place 3 and the bathtub 2 has a bathtub drain pipe 13 for flowing water in the bathtub 2 and a washing place drainage section 14 for flowing water used in the washing place 3 below the floor pan. A main drain pipe 5 is provided in which the drain drain trap 6 joins and the bathroom drain pipe 15 is connected to the main drain pipe (not shown) of the building from the drain trap 6. In addition, the entrance / exit 4 to the adjacent dressing room in the bathroom 1 of this example employs a barrier-free structure that eliminates the level difference, and the entrance / exit of the bathroom 1 prevents the water used in the washing room 3 from flowing into the dressing room. A drainage groove 9 is provided at the front four, and an inlet / outlet drainage pipe 10 as a subdrainage pipe 7 is communicated with the drainage trap 6 from the drainage groove 9.

  Specifically, the floor pan of the bathroom 1 is composed of a wash floor floor pan and a bathtub installed floor pan lower than this. As shown in FIG. 3, a washroom-side drain hole 16 is perforated at the end of the washroom floor pan on the bathtub side, and a ring-shaped countersunk flange 17 is inserted and fixed to the edge of the washroom-side drain hole 16 with a seal. In addition, a bottomless cylindrical inner trap cylinder 18 is suspended from the inner edge of the countersink flange 17 to constitute a washing place drainage section 14. In addition, the eye plate 19 and the hair catcher 20 are attached to the inner edge of the eye plate flange 17 so as to cover the washing area side drain hole 16. A container-like trap member 21 having an upper opening is attached to the outer edge of the lower end of the countersink flange 17 with a seal from below. The trap member 21 is a member that forms the drain trap 6. More specifically, the lower region is formed of a bottomed cylindrical outer trap tube 22 that opens upward, and the upper region of the outer trap tube 22. This is a member composed of an outer tube 23 that wraps the vicinity of the upper end from the outside. When this trap member 21 is attached to the countersunk flange 17, the inner trap cylinder 18 is inserted into the outer trap cylinder 22. In other words, the drain trap 6 is disposed directly below the washing area drain section 14, and the drainage from the washing area drain section 14 flows down to the drain trap 6 via the inner trap cylinder 18.

  Moreover, a bathtub-side drain hole 24 is drilled in the bathtub installation floor pan, and a flange member 25 is inserted and fixed to the bathtub-side drain hole 24 with a seal. A hose holding member 27 for attaching and holding the other end of a drain hose (not shown) having one end connected to a bathtub drain hole 26 drilled in the bottom surface of the bathtub 2 to the bathtub side drain hole 24 is attached to the flange member 25. It has been. Moreover, the bathtub drainage pipe 13 which connects the bathtub side drain hole 24 and the drain trap 6 is attached to the flange member 25 with a seal from below. The bathtub drain pipe 13 has an outlet 13 a opened on the side wall of the outer trap cylinder 22 of the drain trap 6.

  In addition to the outlet 13 a of the bathtub drain pipe 13, an inlet 15 a of the bathroom drain pipe 15 and an outlet 10 a of the inlet / outlet drain pipe 10 communicate with the drain trap 6. It is provided to do. The inlet 15 a of the bathroom drain pipe 15 is opened at the side wall of the outer cylinder 23 around the upper end of the outer trap cylinder 22 at a position facing the outlet 13 a of the bathtub drain pipe 13. Further, the outlet 10a of the inlet / outlet drain pipe 10 is opened in the side wall of the outer trap cylinder 22 at a position that is horizontally shifted by about 90 ° from the outlet 13a of the bathtub drain pipe 13. Here, the inlet / outlet drain pipe 10 has a semi-cylindrical pipe cross-section in which a convex arc-shaped lower side is connected downward from both ends of the horizontal straight upper side, and the bathroom drain pipe 15 and the bathtub are taken into account due to the difference in assumed flow rate. Compared to the drain pipe 13, the pipe is configured with a relatively small cross-sectional area. The inlet / outlet drain pipe 10 falls substantially vertically from the inlet 10b (see FIG. 7) opened to the bottom of the drain groove 9, and then gradually slopes downward toward the drain trap 6 to form an outer trap cylinder. The outflow port 10 a is opened on the side surface of 22.

  As described above, in the drain trap 6, the outlet 14 a of the wash basin drain 14 formed by the inner trap cylinder 18, the outlet 13 a of the bathtub drain pipe 13, and the outlet 10 a of the inlet / outlet drain pipe 10 are all in the outer trap cylinder 22. Open, that is, drainage from various places in the bathroom 1 merges in the outer trap cylinder 22, and drainage overflowing the outer cylinder 23 opens the inlet 15a in the outer cylinder 23 so as to get over the upper end of the outer trap cylinder 22. The water is drained to the main drainage pipe through the bathroom drainage pipe 15 that is made to flow. The drain trap 6 has a function of collecting water and sealing water in order to cut off odors and small animals from entering the bathroom 1 from the main drain pipe. It is done with water that has accumulated. That is, in the drain trap 6, drainage from various places in the bathroom 1 once stays in the outer trap cylinder 22, and then the water overflowing the outer trap cylinder 22 is drained to the main drain pipe via the bathroom drain pipe 15. Therefore, the drain is always accumulated at the upper end of the outer trap cylinder 22, and the drainage accumulated in the outer trap cylinder 22 is the inner trap cylinder 18, the bathtub drain pipe 13, the inlet / outlet drainage. The water enters the tube 10 and is sealed.

  By the way, also in the drainage trap 6 of this example, as described in the section of the background art, a large amount of drainage from the washing place 3 and the bathtub 2 is suddenly drained to the main drainage pipe via the main drainage pipe 5. Then, the inlet / outlet drain pipe 10 which is the sub drain pipe 7 having a relatively small pipe diameter multiplied by the drainage flow is strongly attracted to the main drain pipe, and the water that has sealed the inlet / outlet drain pipe 10 is also present. The phenomenon of being drawn into the main drain pipe together occurs. And if the sealing water level of the inlet / outlet drain pipe 10 is lower than the upper end height of the outlet / outlet 10a of the inlet / outlet drain pipe 10 and the sealing water of the inlet / outlet drain pipe 10 is broken, the air from the inlet / outlet drain pipe 10 to the bathroom air Is drawn into the main drainage pipe together with a large amount of drainage, and an inflow sound is generated that makes the bathroom user uncomfortable. Therefore, in this example, as will be described in detail below, the elbow member 8 is attached to the outlet 10a of the inlet / outlet drain pipe 10 to suppress the generation of the air inflow sound.

  As shown in FIG. 4, the elbow 8 is a molded product of an elastically deformable soft resin material, and includes a side opening 8 a formed by drooping a drooping pipe 29 from one end of the horizontal pipe 28 at a substantially right angle It is an L-shaped bent tube material having a lower opening 8b. The horizontal pipe portion 28 has a cross-sectional shape that is the same as the cross section of the inlet / outlet drain pipe 10, and can be inserted with the side opening 8 a communicating with the outlet 10 a of the inlet / outlet drain pipe 10. ing. The drooping tube portion 29 is formed in a substantially rectangular box shape having a lower opening 8b. In addition, the drooping pipe part 29 of this example is formed so that the lower end thereof is at the same height as the lower end of the horizontal pipe part 28. More specifically, the front wall 29 a of the drooping pipe portion 29 is formed in an arc shape along the outer peripheral surface of the inner trap cylinder 18, and the rear wall 29 b of the drooping pipe section 29 is along the inner peripheral surface of the outer trap cylinder 22. In the lower end of the front surface of the drooping tube portion 29, a cutout portion 30 is formed by cutting the front wall 29 a of the drooping tube portion 29. Further, a notch 11 is formed at the lower end portion of the horizontal tube portion 28 so as to face the lower opening 8b of the hanging tube portion 29 along the tube length direction of the horizontal tube portion 28.

  The elbow member 8 is mounted such that the horizontal pipe portion 28 is inserted into the outlet 10a of the inlet / outlet drain pipe 10 as shown in FIG. At this time, the elbow material 8 is a soft material and is easily elastically deformed particularly in the horizontal pipe portion 28 having the notch 11. Therefore, the horizontal pipe portion 28 can be smoothly inserted into the outlet 10 a of the inlet / outlet drain pipe 10. At the same time, the horizontal pipe portion 28 can be firmly attached by elastic contact with the inner surface of the outlet 10a of the inlet / outlet drain pipe 10 at the time of mounting. Here, since the cross-sectional shape of the horizontal pipe part 28 of this example and the outflow port 10a of the inlet / outlet drain pipe 10 is made into the non-circular kamaboko shape, the mounted elbow material 8 will rotate on the spot. Is also prevented. Further, in the elbow member 8 in which the horizontal pipe portion 28 is fitted into the inlet / outlet drain pipe 10 and attached to the outlet / outlet 10 a of the inlet / outlet drain pipe 10 as described above, the drooping pipe portion 29 is connected to the outer trap cylinder 22. It is sandwiched between the inner peripheral surface and the outer peripheral surface of the inner trap cylinder 18, and the elbow member 8 is prevented from coming off from the inlet / outlet drain pipe 10.

  In a state where the elbow member 8 is attached to the outlet / outlet port 10 a of the inlet / outlet drain pipe 10, the lower opening 8 b including the cut portion 30 of the hanging pipe portion 29 of the elbow member 8 is formed in the drain trap 6 as shown in FIGS. 5 and 1. It faces the bottom near the bottom. By providing the elbow member 8 in this way, the lower opening 8b of the hanging tube portion 29 of the elbow member 8 becomes a new outlet to the drain trap 6 of the inlet / outlet drain pipe 10. According to this, even if the sealing water level is lowered to a position (M ′ line position) lower than the upper end height position of the outlet 10a of the original inlet / outlet drain pipe 10 that opens to the side surface of the outer trap cylinder 22, If the sealing water level is higher than the lower opening 8b of the elbow member 8 (M ″ line position), the sealing water in the inlet / outlet drain pipe 10 is not broken. That is, by providing the elbow material 8, the durability of the sealing water of the inlet / outlet drain pipe 10 against the decrease in the sealing water level of the inlet / outlet drain pipe 10 is improved, and the sealed water of the inlet / outlet drain pipe 10 is not easily broken. . Therefore, when a large amount of waste water flows from the bathtub 2 or the washing place 3 through the drain trap 6 to the main drain pipe 5, the water that seals the inlet / outlet drain pipe 10 together with the main drain pipe. Even if a phenomenon occurs in which the sealed water level of the inlet / outlet drain pipe 10 is lowered, the inlet / outlet drain pipe 10 can be continuously sealed as long as the sealed water level does not decrease to the lower opening 8b of the elbow member 8, That is, bathroom air is less likely to flow into the drain trap 6 from the entrance / exit drain pipe 10, and generation of air inflow sound that makes the bathroom user uncomfortable is effectively suppressed.

  More specifically, a notch 11 is formed at the lower end of the horizontal pipe part 28 of the elbow member 8 so as to face the lower opening 8b of the hanging pipe part 29 over the entire length of the horizontal pipe part 28. Thus, the inlet / outlet drain pipe 10 is exposed to the lower opening 8b of the elbow member 8, and therefore, the lower end portion of the connecting portion between the inlet / outlet drain pipe 10 and the elbow member 8 is flush with the step, causing the step. It is possible to eliminate the catch of hair and dust, and to prevent clogging of the inlet / outlet drain pipe 10 and the elbow member 8.

  FIG. 6 shows another example of the embodiment of the present invention. Since this example is an example in which the configuration of the elbow material 8 is different from the previous example, the same parts as those in the previous example are denoted by the same reference numerals, the description thereof will be omitted, and different parts will be described. As shown in FIG. 6 (a), the elbow member 8 of this example extends the side wall 29c and the rear wall 29b of the drooping pipe portion 29 downward to form the drooping wall 12. When attached to the outlet 10 a of the pipe 10, the lower end of the hanging wall 12 is grounded in surface contact with the bottom surface of the outer trap cylinder 22 of the drain trap 6 as shown in FIG. This effectively prevents the elbow member 8 from rotating on the spot. This is particularly effective when the horizontal pipe portion 28 of the elbow member 8 and the outlet / outlet port 10a of the inlet / outlet drain pipe 10 have a circular cross-sectional shape or the like, and the elbow member 8 in the mounted state is easy to rotate on the spot. . The notch 11 formed in the horizontal pipe part 28 in the previous example is continuously drilled from the horizontal pipe part 28 to the lower end of the hanging pipe part 29 in this example, that is, inside the corner of the elbow member 8. A notch 11 is formed on the tube wall of the portion along the entire length of the pipe line of the elbow member 8 to effectively prevent the hair from being caught.

It is a schematic sectional side view (BB sectional view of FIG. 2) of the drain trap of the example of embodiment of this invention. It is the top view which saw a part of bathroom same as the above. It is the sectional view on the AA line of FIG. (A) (b) (c) is the perspective view which looked at the elbow material same as the above from multiple directions. (A) is a perspective view explaining mounting | wearing of an elbow material, (b) is a perspective view of the state which mounted | wore the elbow material. The other example of embodiment of this invention is shown, Comprising: (a) is a perspective view of an elbow material, (b) is a schematic sectional side view of a drain trap. It explains background art, (a) is a top view in the vicinity of a drain trap, (b) is a schematic cross-sectional view taken along the line CC of (a), (c) is a D- It is D line schematic sectional drawing.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Bathroom 2 Bathtub 3 Washing place 4 Entrance / exit 5 Main drainage pipe 6 Drainage trap 7 Sub drainage pipe 8 Elbow material 10 Entrance / exit drainpipe 11 Notch 12 Hanging wall 13 Bathtub drainpipe 14 Washroom drainage part 15 Bathroom drainpipe

Claims (5)

  A drainage trap is installed in the main drainage pipe that drains outside the bathroom from the bathtub or washing area, and a secondary drainage pipe that drains from a bathroom location other than the bathtub or washing area is connected to the side of the drainage trap. Elbow material was attached to the outlet to the side of the drain trap of the road, and the opening of the elbow material that became the outlet to the drain trap of the sub drain pipe was provided near the bottom of the drain trap and facing downward. Characterized bathroom drainage structure.   2. The bathroom drainage structure according to claim 1, wherein the auxiliary drainage pipe is constituted by an entrance / exit drainage pipe extending from a drainage groove provided before the entrance / exit to the bathroom dressing room to a drainage trap.   2. The bathroom drainage structure according to claim 1, wherein the elbow material is formed of a soft material, and the elbow material is press-fitted into an outlet on a side surface of the drain trap of the auxiliary drain pipe.   2. The bathroom drainage structure according to claim 1, wherein a notch extending over the entire length of the elbow pipe is formed in a pipe wall at a portion along the inside of the corner of the elbow.   2. The bathroom drainage structure according to claim 1, wherein a hanging wall is extended to a part of the opening edge of the elbow material, and the lower end surface of the hanging wall is grounded to the bottom surface of the drain trap in a surface contact state.

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