JP2000291097A - Draining structure of bathroom unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent a backflow into a bathtub or a tub waterproof pan or into both of them. SOLUTION: In a draining structure of a bathroom unit for draining from a bathtub and a tub waterproof pan 2 provided below the bathtub, a drain channel 4 is connected to a drain opening 3 formed for draining from the bathtub and the tub waterproof pan 2. A tube body 13 for draining is fitted directly or indirectly in a drain hole of the bathtub. This tube body 13 is constituted of an elastic material and has a constitution wherein inner surfaces from the middle part to the discharge opening are normally brought into close contact with each other and this state of close contact is removed by a water pressure in draining, while a backflow from the discharge opening is thereby prevented. A part of the tube body 13, at least, is so disposed as to stretch from the drain opening 3 to the drain channel 4.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drainage structure for a bathroom unit called a double pan type in which a tub waterproof pan is provided below a bathtub.

[0002]

2. Description of the Related Art As this type of drainage structure, as shown in FIGS. 7 and 8, a tub waterproof pan 2 is provided below a bathtub 1, and an elbow 4 is connected to a drain opening 3 of the tub waterproof pan 2. A conduit 5 is connected to the elbow 4, and the conduit 5 is connected to a trap 6. This trap 6 is provided in a drainage section 8 of a washing place 7. Further, a tub elbow 10 is connected to the drain hole 9 of the bathtub 1, and a hose 11 is connected to the elbow 10.
And an elbow 12 is connected to the hose 11. The elbow 4 has an L-shaped cylindrical shape, and a female screw 100 is formed in a receiving port, that is, an upper inner peripheral surface, and a male screw 102 of a flange 101 is screwed into the female screw 100. When the flange 101 is screwed into the elbow 4, the peripheral portion 3 </ b> A of the drain opening 3 of the tab waterproof pan 2 is sandwiched between the elbow 4 and the outer edge of the flange 101. A pipe 103 is connected to the elbow 12, and a lower end of the pipe 103 is inserted into a hole 101A of the flange 101. The diameter of the hole 101A is larger than the outer diameter of the pipe 103. An extension 104 is formed in the middle of the pipe 103 so as to project outward and fit into the flange 101, and a hole 104A for discharging water collected in the tub waterproof pan 2 is formed in the extension 104. ing. Below the overhanging plate 104 of the pipe 103 is provided a float 105 loosely fitted into the pipe 103, and when the water in the elbow 4 flows into the flange 101 from the hole 101A, the float 105
Are raised to close the hole 104A.

[0003]

The above-mentioned float 10
Although a device using a movable valve in place of 5 is also known, none of them has taken measures to prevent backflow into the bathtub.
For example, in a state in which the water stopcock is removed after cleaning the bathtub when a large amount of water is drained from the washing place, dirty water from which the washing place has been cleaned may flow back into the bathtub and stain the bathtub. Further, as a means for preventing backflow to the tab waterproof pan, a structure that is simpler in structure and easier to mount than those using a float 105 or a movable valve has been required.

Accordingly, an object of the present invention is to provide a drainage structure of a bathroom unit which does not flow backward into a bathtub when a large amount of water is drained from a washing place, and does not flow back into a tub waterproof pan when a large amount of water is drained from a bathtub. . It is another object of the present invention to provide a bathroom unit drainage structure that allows only drainage at the time of drainage from a bathtub or a tub waterproof pan, and has a structure that prevents backflow and that is easy to install.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention relates to a drainage structure for a bathroom unit which drains water from a bathtub and a tub waterproof pan installed below the bathtub. A drainage channel is connected to the drainage opening formed in the tub waterproof pan to drain the water from the waterproof pan, and a drainage tube is attached directly or indirectly to the drainage hole of the bathtub. The inner surface is always in close contact from the intermediate portion to the discharge port, and the close contact state is released by water pressure at the time of drainage, while having a configuration to prevent backflow from the discharge port, at least a part of the tube body It is arranged from the drain opening to the drain channel. Also, in the drainage structure of the bathroom unit that drains water from the bathtub and the tub waterproof pan installed therebelow, a drain opening formed in the tub waterproof pan for draining from the bathtub and draining from the tub waterproof pan. A drainage channel is connected to the drainage opening, and a backflow prevention body having a drainage hole for the pan and a drainage hole for the tab is attached to the drainage opening of the tub waterproof pan. This tube body is made of an elastic material,
The inner surface is always in close contact from the intermediate portion to the discharge port, and while the close contact state is released by water pressure at the time of drainage, there is a configuration that prevents backflow from the discharge port, and at least a part of the tube body is removed from the drainage opening. It is arranged to reach the drainage channel.

[0006]

Preferred embodiments of the present invention will be described below with reference to the accompanying drawings.

In the embodiment shown in FIG. 1, in order to drain water from the bathtub 1 (see FIG. 7) and the tub waterproof pan 2 installed therebelow, a flange is formed in the drain opening 3 of the tub waterproof pan 2 as in the prior art. 101, the flange 101 and an elbow 4 forming a drainage channel, a peripheral portion 3 of the tub waterproof pan 2
A is sandwiched. A female screw 100 is formed on the inner peripheral surface of the elbow 4 on the drainage receiving port side, and a male screw 102 of a flange 101 is screwed into the female screw 100. The peripheral portion 3A of the drain opening 3 of the tub waterproof pan 2 is
Are sandwiched between the outer edges 4A and 101B. A packing 3B is provided at a location where the peripheral portion is sandwiched, so as to prevent water leakage from this location.

[0008] Although not shown in FIG.
7 (see FIG. 7), a tab elbow 10 is connected, a hose 11 is connected to the tab elbow 10, and an elbow 12 is connected to the hose 11, as in the prior art. A tube 14 containing a tube 13 is attached to the elbow 12. The tip of the tube 14 is inserted into a hole 16 formed in the bottom 15 of the flange 101. Tube body 13
Is made of an elastic material, the inner surface is always in close contact from the intermediate portion to the discharge port (close contact portion 13A), and the close contact state is released by the water pressure at the time of drainage. This is prevented by the presence of 13A. At least a part of the tube body 13 is disposed so as to reach from the drainage opening 3 to the elbow 4 constituting the drainage channel. Therefore, the drainage from the bathtub 1 is supplied to the tub elbow 10, the hose 11, the elbow 12, and the tube 1
It is discharged to the drain through 3. In addition, the tube body 13
Can be formed long and directly attached to the bathtub 1. Furthermore, without putting the tube body 13 in the tube body 14,
It can also be used directly.

FIG. 2 is a plan view of the flange 101.
In the bottom 15, in addition to one hole 16, three holes 17 for draining the tub waterproof pan 2 are formed. These holes 17
Has a rectangular hole in the center and semicircular holes above and below it, and there is a partition 17A between each hole, so that large dust can be prevented from being discharged due to the partition 17A. Has become.

The elbow 4 is integrally formed up to a portion where a trap 6 is formed.
0 is provided. The water bottle 40 is provided in the drainage section 8 of the washing place 7.
It is provided in the place of. The location of this drainage part 8 is also the flange 2
01 is screwed into the inner peripheral surface of the upper opening of the trap 6, and the outer peripheral edge of the drain portion 8 of the washing place 7 is sandwiched (flange 10).
1). In FIG. 1, reference symbol M indicates a water sealing surface. Note that the elbow 4 and the trap 6 may not be formed integrally but may be formed separately and connected to each other by a pipe or the like.

FIG. 3 shows a center hole 18 formed at the center of the bottom 15 of the flange 101, and a tub for draining water from the bathtub 1 and draining from the tub waterproof pan 2 on a peripheral portion 18A of the center hole 18. A short cylindrical backflow prevention main body 20 having a drain hole 21 and a bread drain hole 22 formed thereon is mounted. The tab drainage hole 21 is formed in the tubular portion 19, and the elbow 12 is connected to the upper end of the tubular portion 19.
A tube body 14 containing a tube body 13 is attached to the lower end of the tube. A seal packing 2 is provided on the outer periphery of the main body 20.
3 is provided, and is pressed against the inner peripheral surface of the flange 101.

FIG. 4 is a plan view of the backflow prevention main body 20, and the bread drainage hole 22 is composed of three holes partitioned by a partition 22A similarly to the hole 17 described above. Partition 22A
The reason why the bread drain hole 22 is formed from the three holes partitioned by is to prevent discharge of large garbage and to prevent the drain passage from being clogged.

FIG. 5 is a partially cutaway front view of the backflow preventing main body 20, showing a state in which the tube 14 in which the tube 13 is accommodated is attached. Drainage from the bathtub 1 is drained from the tub drainage hole 21 of the backflow prevention main body portion 20 to the drainage passage through the tube body 13. Drainage from the tub waterproof pan 2 is drained from a pan drainage hole 22 of the backflow prevention main body 20.

The embodiment shown in FIG.
Is formed in a protruding cylindrical portion 24 protruding downward, and the tube body 14 in which the tube body 13 is accommodated is attached to the protruding cylindrical portion 24. In this example, the tube body 13 is not provided in the tub drain hole 21, and only the backflow to the tub waterproof pan 2 is prevented. Tab drainage hole 2
Needless to say, the tube body 13 may be provided in both the pan 1 and the drainage hole 22 for bread.

[0015]

As described above, according to the present invention, the drainage channel is connected to the drainage opening formed in the tub waterproof pan for draining from the bathtub and draining from the tub waterproof pan. A drain tube is attached directly or indirectly to the drain hole of the tube, and this tube body is made of an elastic material, and the inner surface is always in close contact from the intermediate portion to the discharge port, and the close contact state is released by the water pressure at the time of drain. On the other hand, it has a configuration to prevent backflow from the discharge port, and at least a part of the tube body is disposed so as to reach the drainage channel from the drainage opening. When draining water and cleaning the bathtub and washing place, after draining the water from the bathtub, if a large amount of water is poured into the washing place, there is no risk that this water will flow back and enter the bathtub Further, since the backflow is prevented by the tube, the structure is extremely simple, and the tube can be easily mounted.

Further, a backflow prevention main body having a drain hole for the pan and a drain hole for the tub is attached to the drain opening of the tub waterproof pan, and the tube body is connected to the drain port for the tub for draining from the drain port of the bathtub. In the attached device, the tube can be attached to the backflow prevention main body in advance, and the backflow prevention can be prevented simply by setting the backflow prevention main body in the drainage opening.

Further, in the case where the tube body is attached to the bread drain hole, backflow to the tub waterproof pan can be prevented as in the conventional case. In the case where the tube body is attached to both the drain hole for the pan and the drain hole for the tub, backflow does not occur in either the bathtub or the tub waterproof pan.

[Brief description of the drawings]

FIG. 1 is a sectional view of a main part showing a preferred embodiment of the present invention.

FIG. 2 is a plan view of a flange.

FIG. 3 is a cross-sectional view of a main part showing another embodiment using a backflow prevention main body.

FIG. 4 is a plan view of a backflow prevention main body.

FIG. 5 is a front view showing a state in which a tube body is attached to the backflow prevention main body.

FIG. 6 is a sectional view of an essential part showing an embodiment in which a tube body is attached to a drain port for bread.

FIG. 7 is a sectional view showing a conventional example.

FIG. 8 is a sectional view showing a drainage structure portion of a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Bathtub 2 Tab waterproof pan 3 Drainage opening 4 Elbow (drainage channel) 6 Trap 7 Washing place 9 Bathtub drainage 13 Tube body 13A Adhesion part 20 Backflow prevention main body 21 Tab drainage hole 22 Pan drainage hole

Claims (6)

[Claims] 1. A drain structure for a bathroom unit for draining water from a bathtub and a tub waterproof pan installed below the tub, wherein the tub waterproof pan is formed to drain the bathtub and the tub waterproof pan. A drainage channel is connected to the drainage opening, and a drainage tube is attached directly or indirectly to the drainage hole of the bathtub. This tube is made of an elastic material, and the inner surface is always in close contact from the middle part to the drainage port. While the close contact state is released by the water pressure at the time, a structure for preventing backflow from the discharge port is provided, and at least a part of the tube body is disposed so as to reach the drainage channel from the drainage opening. Drainage structure of bathroom unit. 2. A backflow prevention main body having a drainage hole for a pan and a drainage hole for a tub is attached to a drainage opening of the tub waterproof pan, and the tube body is attached to the tub drainage hole for draining water from the drainage hole of a bathtub. The drainage structure for a bathroom unit according to claim 1, further comprising: 3. The drainage structure for a bathroom unit according to claim 2, wherein the pan drainage hole of the backflow prevention main body comprises a plurality of holes. 4. The drainage structure for a bathroom unit according to claim 2, wherein the tube body according to claim 1 is attached to a pan drainage hole of the backflow prevention main body. 5. A drain structure for a bathroom unit for draining water from a bathtub and a tub waterproof pan installed below the tub, wherein the tub waterproof pan is formed to drain the bathtub and the tub waterproof pan. A drainage channel is connected to the drainage opening, and a backflow prevention body having a drainage hole for the pan and a drainage hole for the tab is attached to the drainage opening of the tub waterproof pan. The tube body is made of an elastic material, the inner surface is always in close contact from the middle part to the discharge port, and the close contact state is released by the water pressure at the time of drainage, while the backflow from the discharge port is prevented. A drain structure for a bathroom unit, wherein at least a part of the tube body is disposed from the drain opening to the drain channel. 6. A trap is provided in a drainage part of a washing place, and drainage from a drainage channel provided in a drainage opening of a tub waterproof pan is introduced into the trap, and the tube body according to claim 1 is introduced into a receiving port of the drainage channel. The drainage structure for a bathroom unit according to any one of claims 2 to 5, further comprising a backflow prevention main body provided.