JP2004250867A - Drainage structure for unit bath - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a drainage structure for a unit bath capable of performing drainage from an under-door drain port well in the drainage structure for the unit bath provided with a waterproof pan comprising a bathtub pan and a washing place pan, a washing place drain port, the under-door drain port, and a drainage trap connected to the washing place drain port and the under-door drain port. <P>SOLUTION: A connecting pipe 13 for connecting the under-door drain port 7 to the drainage trap 9 is formed to make the pipe diameter of a trap side connecting pipe 15 connected to the drainage trap 9, larger than the pipe diameter of a door lower side connecting pipe 14 connected to the under-door drain port 7. Air vent piping 17 is connected to the upper part of a pipe diameter change part 16 where the pipe diameter is changed large halfway in the connecting pipe extending from the under-door drain port 7 to the drainage trap 9. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention provides a waterproof pan including a bath tub on which a bath tub is placed and a washing pan provided with a washing basin, a washing basin drain provided in the washing basin, and a lower part of a door frame provided at an end of the washing basin. The present invention relates to a drain structure for a unit bath including a drain outlet under a door, and a drain trap connected to a wash outlet and a drain outlet under the door.
[0002]
[Prior art]
Conventionally, a waterproof pan including a bathtub pan on which a bathtub is placed and a washbasin where a washbasin is provided, a washbasin drain provided in the washbasin pan, and a lower part of a door frame provided at an end of the washbasin pan are provided. 2. Description of the Related Art A drainage structure of a unit bath including a drainage outlet under a door and a drainage trap connected to a drainage outlet for a washing place and a drainage outlet under a door is known. The drain trap is provided to prevent bad smell and the like from entering the unit bath from the downstream side. A bathtub drain port provided in a bathtub pan is also connected to the drain trap. Connecting multiple drains to a single drain trap without providing a drain trap for each drain is because only one drain trap is required, so there is less labor to implement and it is economical. . However, when a plurality of outlets including a washing outlet and a drain outlet under a door are connected to one drain trap, the following problem may occur.
[0003]
For example, when a large amount of washing water flows into the drain trap from the wash drain, the inside of the drain trap is full, and the air in the connecting pipe connecting the drain below the door and the drain trap is drained. Since the flow is blocked by the drainage in the trap, the flow of drainage from the drainage port under the door is deteriorated, and smooth drainage may not be performed.
[0004]
Therefore, as a measure to prevent the flow of drainage from the drain below the door from becoming worse, the following method is required to connect an air vent pipe to the connection pipe connecting the drain below the door and the drain trap. It is proposed in Patent Document 1. Certainly, if an air vent pipe is connected in the middle of the connecting pipe connecting the drain port under the door and the drain trap, the deterioration of the flow of drain water from the drain port under the door is considerably improved. However, when the connecting pipe connecting the drain port under the door and the drain trap is thin, the degree of improvement may be small, and the flow of drain water from the drain port under the door can be more reliably prevented from being deteriorated. There is a demand for a unit bath drainage structure.
[0005]
[Patent Document 1]
JP 2001-146778 A
[Problems to be solved by the invention]
The present invention has been made in view of the above circumstances, and an object thereof is to provide a waterproof pan including a bathtub pan on which a bathtub is placed and a washpan provided with a washbasin, and a washbasin drain provided in the washpan. A unit bath drainage structure including a mouth, a drain under the door provided at the lower part of the door frame provided at the end of the washing pan, and a drain trap connected to the drain of the washing place and the drain below the door. In view of the above, an object of the present invention is to provide a drainage structure for a unit bath that can satisfactorily drain the water from a drainage port below a door.
[0007]
[Means for Solving the Problems]
The inventors of the present application have studied the position of connecting the air release pipe to the connecting pipe connecting the drain port under the door and the drain trap and the structure of the connecting pipe in detail, and as a result, have reached the present invention. is there.
[0008]
The drainage structure for a unit bath according to the first aspect of the present invention is a waterproof pan including a bathtub pan on which a bathtub is placed and a washbasin pan provided with a washbasin, a washbasin drainhole provided in the washpan, In the drainage structure of the unit bath, which has a drain outlet under the door provided at the lower part of the door frame provided in the toilet and a drain trap connected to the wash outlet and the drain outlet under the door, the drain outlet under the door and the drain trap are provided. The diameter of the trap side connection pipe connected to the drain trap is larger than the diameter of the door lower connection pipe connected to the door lower drain port. The air vent pipe is connected to the upper part of the pipe diameter changing portion where the pipe diameter changes thickly in the middle of the connecting pipe leading to.
[0009]
The fact that the pipe diameter of the trap side connection pipe is made larger than the pipe diameter of the door lower connection pipe here clearly means that the pipe diameter is changed to be large, and the same diameter joint and pipe It does not include the part connecting with the piping.
[0010]
A drainage structure for a unit bath according to a second aspect of the present invention is the unit bath drainage structure according to the first aspect, wherein the pipe diameter changing portion connects the door lower connection pipe and the trap side connection pipe. It is characterized by being.
[0011]
A drainage structure for a unit bath according to a third aspect of the present invention is the drainage structure for a unit bath according to the first or second aspect, wherein a wall panel is provided on an edge of the waterproof pan, and one end of the air release pipe is connected to the wall panel. It is connected to the upper part of the pipe diameter changing part, and the other end of the air vent pipe is connected to the air vent pipe holding part provided through the wall panel from the outside of the wall panel and opened into the unit bath room. It is characterized by having.
[0012]
The drainage structure for a unit bath according to the invention according to claim 4 is the drainage structure for a unit bath according to claim 1 or 2, wherein the bathtub pan has a rising surface at its washing pan side end, The rising surface is provided with an air vent pipe mounting hole and a lid for closing the air vent pipe mounting hole, and the lid is provided with an air vent pipe holding part penetrating the lid, and one end of the air vent pipe is provided. Is connected to the upper part of the pipe diameter changing part, and the other end of the air vent pipe is connected to the air vent pipe holding part from the back side of the rising surface of the bathtub pan and is opened to the inside of the bathtub pan. Features.
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
First, a first embodiment of the present invention will be described. FIG. 1 is a plan view showing a first embodiment of a unit bath drainage structure of the present invention, in which a ceiling, a bathtub, a wall panel, a door, a part of a door frame and the like are omitted. FIG. 2 is a side view of a main part of the first embodiment, in which a part of a waterproof pan, a wall panel, a bathtub drain pipe, and the like are omitted. FIG. 3 is a bird's-eye view showing the entire unit bus, in which a ceiling, a bathtub, a door, a part of a door frame, and the like are omitted. FIG. 4 is a side view showing an air release pipe holding section in the first embodiment, and FIG. 5 shows a state in which an air release pipe is connected to an upper part of the pipe diameter changing section in the first embodiment. It is a perspective view.
[0014]
As shown in FIG. 3, the waterproof pan 1 of the unit bath in the first embodiment is formed by connecting a bathtub pan 2 on which a bathtub is placed and a washing pan 3 provided with a washing place. The bathtub pan 2 is provided with a bathtub drainage port 4 for discharging water in a bathtub (not shown). A washing place drain port 5 for discharging water from the washing place is provided near the bathtub pan 2 of the washing place pan 3, and a drain trap 9 is provided immediately below the washing place drain port 5. A door frame 6 is attached to the end of the washing pan 3, and a lower door drain port 7 is provided below the door frame 6. A door (not shown) is attached to the door frame 6, but FIG. 3 shows only the lower portion of the door frame 6. A wall panel 8 is provided upright on the periphery of the waterproof pan 1 except for a portion to which the door frame 6 is attached.
[0015]
In the first embodiment, as shown in FIG. 1, the bathtub drainage port 4, the washing place drainage port 5, and the door lower drainage port 7 provided at the lower part of the door frame 6 are connected to a drain trap 9. . Reference numeral 10 in FIG. 1 indicates a drain pipe extending from the drain trap 9 to the outside. The bathtub drain port 4 and the drain trap 9 are connected by a bathtub drain pipe 11, the washing place drain port 5 and the drain trap 9 are directly connected, and the door bottom drain port 7 and the drain trap 9 are connected by a connecting pipe 13. Connected. In this connection pipe 13, the trap-side connection pipe 15 connected to the drain trap 9 is made larger in diameter than the door lower connection pipe 14 connected to the door lower drain port 7 (see FIG. 2).
[0016]
An air vent pipe 17 is connected to an upper part of a pipe diameter changing portion 16 in which the pipe diameter is changed in the middle of the connection pipe 13 extending from the lower drain port 7 to the drain trap 9. In this embodiment, the door lower connection pipe 14 and the trap side connection pipe 15 having a larger pipe diameter than the door lower connection pipe 14 are connected by different diameter joints (different diameter sockets). Reference numeral 16 denotes a portion where the pipe diameter of the different diameter joint is increased.
[0017]
In this embodiment, as shown in FIG. 3, a hole is formed in a wall panel 8 provided on an edge of the waterproof pan 1, and the wall panel 8 is provided at a position higher than a position where a different diameter joint, which is a tube diameter changing portion 16, is arranged. An air vent pipe holding portion 18 penetrating the wall panel 8 is provided. The air release pipe holding portion 18 is formed of a substantially L-shaped hollow member. As shown in FIG. 4, the inner straight pipe portion 20A is inserted into a hole formed in the wall panel 8, and the wall is formed using a nut. It is fixed to the panel 8 and disposed so that the outer straight pipe portion 20B opens downward. As shown in FIG. 5, one end 17A of the air vent pipe 17 is connected to the upper part of the different diameter joint which is the pipe diameter changing portion 16, and the other end 17B penetrates the wall panel 8 shown in FIG. It is connected to the outer straight pipe portion 20B which opens below the provided air release pipe holding portion 18 from the outside of the wall panel 8.
[0018]
The air vent pipe 17 is provided at a position where the washing pan 3 and the bathtub pan 2 are in contact with each other, and a section formed by bending the upper part of the rising surface of the washing pan has a substantially U-shaped cross section 19 (FIG. 5, see the inside of FIG. 6), take out from the end of the washing pan 3, and connect it to the air release pipe holding part 18 from the outside of the wall panel 8. When the outer straight pipe portion 20B of the air release pipe holding section 18 is formed of a member capable of holding the air release pipe 17 as shown in FIG. 4, the other end 17B of the air release pipe 17 is connected to this member. The air bleeding pipe 17 and the air bleeding pipe holding part 18 can be connected simply by being inserted, so that the connection work is simplified.
[0019]
As described above, the drainage structure of the unit bath according to the first embodiment is provided on the upper part of the pipe diameter changing portion 16 where the pipe diameter is changed in the middle of the connecting pipe 13 from the lower drain port 7 to the drain trap 9. Since the air vent pipe 17 is provided, even if the pipe diameter of the door lower connection pipe 14 connected to the door lower drain port 7 is small, the connection pipe 13 connecting the door lower drain port 7 and the drain trap 9 is formed. As a whole, air can be sufficiently vented, so that the drainage structure of the unit bath can drain well from the drainage port 7 under the door.
[0020]
For example, when a large amount of washing water flows into the drain trap 9 from the washing outlet 5 and the inside of the drain trap 9 is full, a large amount of hot water (water) overflows from the bathtub and the door frame at the end of the washing place. 6 and further flows from the lower drain port 7 to the drain trap 9 through the connecting pipe 13 to the drain trap 9, the pipe diameter changes thickly in the middle of the connecting pipe 13 from the lower door drain port 7 to the drain trap 9. Since the air bleeding pipe 17 is provided above the pipe diameter changing part 16, most of the air in the connection pipe 13 is removed from the connection pipe 13 through the air bleeding pipe 17. Water flowing into the connection pipe 13 can smoothly flow through the connection pipe 13.
[0021]
In the drainage structure of the unit bath according to the first embodiment, one end 17A of the air vent pipe 17 is connected to a different diameter joint which is the pipe diameter changing portion 16, and the other end 17B is provided to penetrate the wall panel 8. Since the drainage pipe 18 is connected to the air release pipe holding portion 18 from the outside of the wall panel 8, even if drainage flows out to the outside through the air release pipe 17, the wastewater flows out into the unit bath chamber. There is also an advantage that the drainage can be prevented from leaking outside. In addition, since the pipe diameter changing portion 16 connecting one end 17A of the air vent pipe 17 is a different diameter joint, if a different diameter joint processed so that the one end 17A of the air vent pipe 17 can be connected is prepared, the operation is performed. There is an advantage that work efficiency on the site is improved.
[0022]
In the present invention, one end 17A of the air vent pipe 17 is connected to the upper part of the pipe diameter changing portion 16, while the other end 17B is connected to one end 17A of the air vent pipe 17 where the function of the air vent pipe 17 can be exhibited. What is necessary is just to hold | maintain in the position higher than the position which has been performed, and there is no further restriction about the connection position.
[0023]
Next, a second embodiment of the present invention will be described. FIG. 7 is a perspective view showing a waterproof pan 1 according to the second embodiment. FIG. 8 is a sectional view of a main part showing the second embodiment, and FIG. 9 is a plan view showing a lid 24 in the second embodiment.
[0024]
In the second embodiment, one end 17A of the air vent pipe 17 is connected to the upper part of the pipe diameter changing part 16 as in the first embodiment, but the other end 17B is a lid provided on the rising surface 22 of the bathtub pan 2. It is connected to the air vent pipe holding part 18 provided in 24, and otherwise has the same configuration as the first embodiment. Hereinafter, regarding the second embodiment, points different from the first embodiment will be described, and the description of the same configuration will be omitted.
[0025]
In the second embodiment, as shown in FIG. 7, a waterproof pan 1 is a combination of a bathtub pan 2 on which a bathtub is placed and a washing pan 3 provided with a washing place. Then, as shown in FIG. 8, a rising surface 21 is formed at the end of the washing pan 3 at a position where the washing pan 3 and the bathtub pan 2 are in contact with each other, and further, the upper part of the rising surface 21 is bent. A cut 19 having a substantially U-shaped cross section is provided. In addition, a rising surface 22 is formed at an end of the bathtub pan 2 at a position where the washing pan 3 and the bathtub pan 2 are in contact with each other, so that the back surface of the rising surface 22 of the bathtub pan 2 and the outer surface of the seki 19 are in contact with each other. And the bath pan 2 and the washing pan 3 are combined.
[0026]
In the second embodiment, as shown in FIGS. 7 and 8, an air vent pipe mounting hole 23 is provided on a rising surface 22 of the bathtub pan 2 at a position where the washing pan 3 and the bathtub pan 2 are in contact with each other. As shown in FIG. 8, a lid 24 is provided so as to close the air vent pipe mounting hole 23, and the lid 14 is provided with an air vent pipe holding part 18 penetrating the lid 24. The lid 24 has a through hole at the center as shown in FIG. 9 and mounting holes through which screws are inserted at four corners, and is fixed to the rising surface 22 of the bathtub pan 2 using screws. One end 17A of the air release pipe 17 is connected to the pipe diameter changing portion 16 as in the first embodiment (see FIG. 5), and the other end 17B of the air release pipe 17 is connected to the rising surface 22 of the bathtub pan 2. Is connected to the air release pipe holding part 18 from the back side of the bath pan 2 and is opened to the inside of the bathtub pan 2. As shown in FIG. 8, the air release pipe holding portion 18 is arranged so as to penetrate the lid 24 and is fixed to the lid 24. In FIG. 8, the bathtub 25 placed on the bathtub pan 2 is indicated by a broken line.
[0027]
Further, in the second embodiment, the air release pipe holding section 18 may be an annular member (a so-called pipe bush) having flanges formed at both ends with an elastic material such as rubber as shown in FIG. This annular member is fitted into a through hole formed in the center of the lid 24, the air vent pipe 17 is passed through the annular member, cut at a desired position, and the other end 17B of the air vent pipe 17 is held by the annular member. This has the advantage that the length of the air vent pipe can be easily adjusted.
[0028]
In the drainage structure of the unit bath according to the second embodiment, similarly to the drainage structure of the unit bath according to the first embodiment, the pipe diameter is changed to be large in the middle of the connection pipe 13 extending from the lower drain port 7 to the drain trap 9. Since the air vent pipe 17 is provided above the pipe diameter changing part 16, even if the pipe diameter of the door lower connecting pipe 14 connected to the door lower drain port 7 is small, the door lower drain port 7 and the drain trap 9 As a whole, the air can be sufficiently vented from the connection pipe 13 connecting the tubs, and thus the drainage structure of the unit bath can be satisfactorily drained from the drain port 7 under the door. In the second embodiment, a hole 23 for attaching an air vent pipe and a lid 24 for closing the hole 23 for attaching the air vent pipe are provided on the rising surface 22 of the bathtub pan 2, and the lid 24 is inserted through the lid 24. One end 17A of the air bleeding pipe 17 is connected to the upper part of the pipe diameter changing part 16, and the other end 17B of the air bleeding pipe 17 is connected to the rising face 22 of the bathtub pan 2. Since it is connected to the air release pipe holding part 18 from the back side and opened to the inside of the bathtub pan 2, the air release pipe 17 can be attached to the already implemented bus unit without removing the wall panel. The effect that it becomes possible is also achieved.
[0029]
【The invention's effect】
In the drainage structure for a unit bath according to the first aspect of the invention, the connecting pipe connecting the drainage port under the door and the drainage trap is connected to the drainage trap with a diameter smaller than the diameter of the connection pipe below the door connecting to the drainage port under the door. The pipe diameter of the connecting pipe on the trap side is increased, and an air vent pipe is connected to the upper part of the pipe diameter changing part where the pipe diameter is changing in the middle of the connecting pipe from the drain port under the door to the drain trap. Therefore, the drainage structure of the unit bath according to the first aspect of the present invention can well drain the water from the drainage port under the door even when the diameter of the lower connection pipe connected to the drainage port under the door is small. A drainage structure for the unit bath that can be used.
[0030]
In the unit bath drainage structure according to the second aspect of the present invention, since the pipe diameter changing portion is a different diameter joint that connects the door lower connection pipe and the trap side connection pipe, the unit bath according to the second aspect of the invention. In addition to the effect of the invention according to claim 1, the drainage structure of (1) also has an effect that the working efficiency at the enforcement site can be improved.
[0031]
In the drainage structure for a unit bath according to the third aspect of the present invention, a wall panel is provided on an edge of the waterproof pan, and one end of the air release pipe is connected to an upper part of the pipe diameter changing portion, and the other end of the air release pipe is provided. Is connected to an air vent pipe holding portion provided through the wall panel from the outside of the wall panel and is opened to the interior of the unit bath. In addition to the effect of the invention according to claim 1, even if the drainage flows out through the air vent pipe, the drainage flows out into the unit bath room, so that the drainage leaks out of the unit bath. This also has the effect of preventing the problem.
[0032]
In the drainage structure for a unit bath according to the fourth aspect of the present invention, the bathtub pan has a rising surface at an end on the washing pan side, the rising surface has an air vent pipe mounting hole, and the air vent pipe. A lid that closes the mounting hole is provided, and the lid is provided with an air release pipe holding section that penetrates the lid. One end of the air release pipe is connected to the upper part of the pipe diameter changing section, and the other air release pipe is connected. The drainage structure of the unit bath according to the invention according to claim 4, wherein the end is connected to the air release pipe holding portion from the back side of the rising surface of the bathtub pan and is opened inside the bathtub pan. In addition to the effects of the invention according to (1), there is also an effect that the air vent pipe can be attached to the already-executed bus unit without performing the work of removing the wall panel.
[Brief description of the drawings]
FIG. 1 is a plan view showing a first embodiment of the present invention.
FIG. 2 is a main part side view showing the first embodiment of the present invention.
FIG. 3 is an overhead view showing the entire unit bus to which the first embodiment of the present invention is applied.
FIG. 4 is a side view showing an air vent pipe holding part in the first embodiment of the present invention.
FIG. 5 is a perspective view showing a connection state of an air vent pipe in the first embodiment of the present invention.
FIG. 6 is a perspective view showing a state in which an air vent pipe is pulled out in the first embodiment of the present invention.
FIG. 7 is a perspective view showing a waterproof pan 1 according to a second embodiment of the present invention.
FIG. 8 is a sectional view of a main part showing a second embodiment of the present invention.
FIG. 9 is a plan view illustrating a lid according to a second embodiment of the present invention.
FIG. 10 is a cross-sectional view of a main part for describing a different air vent pipe holding part in a second embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Waterproof pan 2 Bath tub 3 Washing pan 4 Bath tub drain 5 Washing basin drain 6 Door frame 7 Door lower drain 8 Wall panel 9 Drain trap 10 Drain pipe to the outside 11 Bath tub drain 13 Connecting pipe 14 Door lower connecting pipe 15 Trap-side connection pipe 16 Pipe diameter change section 17 Air release pipe I7A One end 17B Other end 18 Air release pipe holding section 19 Seki 20A Inner straight pipe section 20B Outer straight pipe section 21 Rising surface 22 Rising surface 23 Air vent piping mounting hole 24 Lid 25 Bathtub

Claims (4)

A waterproof pan equipped with a bathtub pan on which a bathtub is placed and a washbasin where a washbasin is provided, a washbasin drain provided on the washbasin pan, and a drain under the door provided below a door frame provided at an end of the washbasin pan. In the drainage structure of a unit bath having a mouth and a drainage trap and a drainage trap which is connected to a drainage outlet under the door,
The connecting pipe connecting the drain port under the door and the drain trap has a larger pipe diameter of the trap side connecting pipe connecting to the drain trap than the pipe diameter of the door lower connecting pipe connecting to the door lower drain port, A drainage structure for a unit bath, characterized in that an air vent pipe is connected to an upper part of a pipe diameter changing portion in which a pipe diameter changes largely in the middle of a connection pipe from a drain port under a door to a drain trap. The drainage structure for a unit bath according to claim 1, wherein the pipe diameter changing portion is a joint having a different diameter for connecting a door lower connection pipe and a trap side connection pipe. An air vent pipe provided with a wall panel on the edge of the waterproof pan, one end of the air vent pipe connected to the upper part of the pipe diameter changing portion, and the other end of the air vent pipe provided through the wall panel. The drainage structure for a unit bath according to claim 1 or 2, wherein the holding unit is connected to the wall panel from outside and opened to the interior of the unit bath. The bathtub pan has a rising surface at the end of the washing pan side, and on the rising surface, a hole for mounting an air vent pipe and a lid for closing the air vent pipe mounting hole are provided. An air vent pipe holding part penetrating the lid is provided, one end of the air vent pipe is connected to the upper part of the pipe diameter changing part, and the other end of the air vent pipe is connected from the back side of the rising surface of the bathtub pan. The drainage structure for a unit bath according to claim 1 or 2, wherein the drainage structure is connected to the air release pipe holding portion and opened to the inside of the bathtub pan.

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