JP3385001B2 - Unit bath drainage structure - Google Patents

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 unit bath, and more particularly to a drainage structure for a unit bath that effectively drains water collected under a door to an external drain pipe.

[0002]

2. Description of the Related Art Conventionally, as this type of drainage structure, for example, a structure shown in FIG. 7 or 8 is known. First,
In the drainage structure shown in FIG. 7, a drain pipe 108 is provided at a substantially center position in the front-rear direction (vertical direction in the figure) on the washing place side of the bath-side pan 101 in which the bathtub 102 is installed, and a rear end portion side of the washing-place pan 103. The drain traps 104 and 105 connected to the door are arranged, and one end of the door drain pipe 107 is connected to the door drain groove 106 provided at the lower portion of the door.
The other end of 07 is located on the pan 101 on the bathtub side. Then, the water collected in the under-drain drainage groove 106 is drained onto the bath-side pan 101 via the under-door drain pipe 107, and this drain water is discharged from the drain trap 104 to the outside of the unit bath via the drain pipe 108. It is designed to be drained (see, for example, JP 2000-144843 A).

The drainage structure shown in FIG. 8 has a bathtub 102.
A drainage elbow 110 is provided on the pan 101 on the bathtub side where the water is installed, and a drain pipe 10 is attached to the elbow 110 in the vicinity of the drainage elbow 110 of the washroom pan 103 where the counter 111 is installed.
The drain trap 112 connected at 8 is provided, one end of the under-door drain pipe 113 is connected to the under-door drain groove 106, and the other end of the under-door drain pipe 113 is connected to the drain trap 112. Further, the drain trap 112 or the under-door drain pipe 113 (in the figure, the case of the under-door drain pipe 113) is provided with, for example, a backflow prevention valve 115 as a backflow prevention mechanism, and the backdoor drain pipe 113 is provided with the check valve in the middle thereof. Backflow prevention tube 1 whose tip is located on the pan 101 on the bathtub side
Connect 14 base ends.

Then, the water collected in the under-drain drainage groove 106 is drained by the under-door drain pipe 113 when the drain trap 112 is not drained from the bathtub 102 or the washing area.
It is directly discharged to 12, and is discharged to the outside through the drain pipe 108. On the other hand, when there is drainage in the drain trap 112 from the bathtub 102 or the washing place, the backflow of this drainage is blocked by the backflow prevention valve 115, and the water in the drain drainage 106 under the door passes through the backflow prevention pipe 114 to the bath side pan 101. Drained up,
This drainage is drained to the outside through the drainage trap 112 and the drainage pipe 108.

[0005]

However, in the former drainage structure, the bath side pan 101 and the washing place pan 1
03, the drain traps 104 and 105 are respectively arranged. Therefore, at least the drain trap 104 is provided at the bottom of the pan 101 on the bathtub side where it is difficult to secure a gap in the bottom.
The height of the unit bath is required, and there is a limit to lowering the installation height of the unit bath (shoe height). Therefore, for example, when installing the unit bath in a high-rise house, it becomes difficult to efficiently reduce the height of each floor, and it is difficult to easily install the unit bath in the second floor of the two-story house. There was a problem that it was easy to be restricted by construction.

Further, since the water collected in the under-drain drainage groove 106 is directly drained onto the bath-side pan 101 via the under-door drain pipe 107, the water enters the bath-side pan 101. By the way, this water makes the bath pan 1
01 is easily soiled, and in particular, since the bathtub 102 is installed on the pan 101 on the bathtub side, cleaning of the pan 101 on the bathtub side becomes substantially difficult, for example, cleaning of the back side, which is the side opposite to the washing area, becomes substantially difficult. There is a problem that it is very troublesome and it is difficult to maintain sufficient cleanliness of the pan 101 on the bathtub side for a long period of time.

Further, in the latter drainage structure, since the drainage elbow 110 is used for the pan 101 on the bathtub side, although the height of the chip can be lowered to some extent as compared with the former drainage structure, the washing place Since the water on the pan 103 is caused to flow to the drain trap 112 arranged on the left side (close to the bathtub 102) in the center of the front and rear direction of the pan 103, the drainage trap 112 side (the bathtub 102 side) is lowered in the washing place pan 103. It is necessary to provide a water gradient in the direction of arrow B. Therefore, when a bather sits in the washing room toward the counter 111, the body leans toward the bathtub 102 side, and it is difficult to wash the body in a stable state. there were.

Further, although the under-door drainage groove 106 is directly connected to the drainage trap 112 by the under-door drainage pipe 113, the water collected in the under-door drainage groove 106 is drained from the bathtub 102 or the washing place. Since the water is drained onto the bath-side pan 101 via the backflow prevention pipe 114, there is also a problem that the bath-side pan 101 is easily soiled by this drainage as in the former drainage structure.

The present invention has been made in view of the above circumstances, and an object of the present invention is to prevent stains on the bathtub side pan due to drainage under the door and to prevent the water gradient in the washroom pan. (EN) It is an object to provide a drainage structure for a unit bath that can be suitably set to improve usability. In addition to the object of the invention of claim 1, the object of the invention of claim 2 provides a drainage structure of a unit bath capable of reliably and satisfactorily draining the under-door drainage, and the object of the invention of claim 3 Is
In addition to the effect of the invention described in claim 1 or 2, it is to provide a drainage structure of a unit bath capable of simplifying the connection structure of each drainage pipe. The object of the invention of claim 4 is
In addition to the object of the invention described in claims 1 to 3, it is an object of the invention to provide a drainage structure of a unit bath capable of providing a drainage pipe between a drainage elbow and a drainage trap with a water sealing function.

[0010]

In order to achieve such an object, the invention according to claim 1 of the present invention is such that a bathtub is arranged on one side and a washroom is provided on the other side, and a longitudinal direction of the bathtub in the washroom is provided. In the drainage structure of the unit bath with a faucet, etc. at one end side of the, a drainage elbow provided on the pan on the bathtub side where the bathtub is installed and a drainage trap provided on the faucet side of the washroom pan where the washroom is formed A drain pipe under the door provided at the lower part of the door, the drain pipe connecting the drain elbow and the drain trap is connected to the other end of the under-drain pipe whose one end is connected to the under-door drain. Characterize.

With this configuration, the drainage from the bathtub is drained from the drainage elbow to the outside via the drainage trap, and the drainage from the washing place is drained to the outside via the drainage trap. On the other hand, the water collected in the drain under the door is
It flows through the drainage pipe under the door, is discharged to the drainage pipe that connects the drainage elbow and the drainage trap, and is drained to the outside. This prevents drainage under the door from flowing into the pan on the bathtub side, prevents the pan from becoming dirty, and because the drain trap is provided on the faucet side of the washroom, the water inclined to the faucet side of the washroom pan It suffices to provide a gradient to prevent the body from leaning laterally (toward the bathtub) when sitting in the washroom.

The invention according to claim 2 is characterized in that the under-door drainage pipe is arranged at a position higher than a drainage pipe connecting the drainage elbow and the drainage trap. With this configuration, the drainage pipe under the door is arranged at a higher position than the drainage pipe that connects the drainage elbow and the drainage trap,
Since the end portion is connected to the drainage pipe, the flow of the drainage under the door to the drainage pipe is improved, and the drainage in the drainage pipe is reliably prevented from flowing into the drainage pipe under the door (backflow).

The invention as set forth in claim 3 is characterized in that the other end of the drainage pipe under the door is connected to a pipe joint provided in the middle of the drainage pipe. With this configuration, since a pipe joint is provided in the middle of the drain pipe connecting the drain elbow and the drain trap, and the door drain pipe is connected to this pipe joint, for example, a three-port pipe joint can be efficiently used. The piping structure can be simplified.

The invention according to claim 4 is characterized in that the drain trap has an external drain pipe connected to a connection port provided at a position higher than the drain port of the drain elbow. With this configuration, the drainage pipe that connects the drainage elbow of the pan on the bathtub side and the drainage trap of the washing pan is set at a position lower than the external drainage pipe, so that drainage is always stored in this drainage pipe. Therefore, this drainage prevents the drainage of the drainage and its odor through the external drainage pipe from entering the bathtub (sealing).

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below with reference to the drawings. 1 to 6 show an embodiment of a drainage structure of a unit bath according to the present invention, FIG. 1 is a schematic plan view thereof, FIG. 2 is a view taken along the line AA of FIG. 1, and FIG. BB line arrow view, FIG. 4 is a perspective view of the piping structure, FIG.
Is an enlarged view of the main part, and FIG. 6 is an explanatory view of the water sealing operation.

1 to 4, the unit bus 1 is
Four wall panels 2a to 2d, a bathtub side pan 3 arranged on the wall panel 2b side, and a washroom formed on the bathtub side pan 3 separately (or integrally molded) and arranged on the wall panel 2d side I have bread 4. Bathtub 5 on bathtub side pan 3
The counter 6, a faucet 14, mirrors (not shown), a lighting device, etc. (referred to as a faucet, etc.) are arranged on the wall panel 2c side (one end side in the longitudinal direction of the bathtub 5) of the washroom pan 4. A not-shown door is arranged on the wall panel 2a so as to be openable and closable, and a gutter-shaped under-door drainage groove 7 is arranged at the lower part of the door.

The drainage structure of the unit bath 1 is constructed as follows. That is, the drainage elbow 8 is arranged on the side of the washing pan 4 at the approximate center position in the front-rear direction of the bath pan 3 (longitudinal direction of the bath 5), and at the end of the washing pan 4 on the counter 6 side, the approximate center position in the width direction. A drain trap 9 is arranged in the. At this time, since the drain trap 9 is arranged on the counter 6 side of the washing place pan 4, the water gradient of the washing place pan 4 is from the door side in the direction of arrow A in FIG. Will be provided along the longitudinal direction.

Then, the drain elbow 8 and the drain trap 9
Are connected by a bent drain pipe 10 having three straight portions 10a to 10c, and the drain trap 9 has a L
The ends of the external drainage pipes 11 bent in a V shape are connected. Further, a door drain pipe 12 is connected to the straight portion 10b of the drain pipe 10. This drain pipe 12 under the door
One end thereof is connected to a drainage port 7a provided at a substantially central position in the longitudinal direction of the under-drain drainage groove 7, and the other end side thereof is, for example, as shown in FIGS. Is connected to the connection port 13c.

Further, as shown in FIG. 3, the under-door drain pipe 12 is arranged at a position higher than the pipe position of the drain pipe 10,
The other end side is bent obliquely downward and is connected to the connection port 13c that is directed obliquely upward of the pipe joint 13.
By setting the pipe position of the under-drain drainage pipe 12, the drainage under the door drainage becomes good and the drainage pipe 1
Backflow of wastewater in 0 is prevented. The pipe joint 13
The connection ports 13a and 13b at both ends of the straight line are connected in the middle of the straight line portion 10b of the drain pipe 10. For example, in the connection portion (corner portion) between the straight line portion 10a and the straight line portion 10b of the drain pipe 10. , Pipe joint 13 having L-shaped connection port
It is of course possible to connect using.

As shown in FIGS. 2 and 3, the drain trap 9 is connected to the end of the drain pipe 10 at the bottom thereof and is flush with or above the position of the drain port 8a of the drain elbow 8. A connection port 9a is provided at the position, and the end of the external water pipe 11 is connected to the connection port 9a. Therefore,
The piping position of the external water pipe 11 is set higher than the piping position of the drain pipe 10.

As a result, as shown in FIG. 6, the drainage elbow 8, the drainage pipe 10, and the drainage trap 9 are always stored (intervened) below the connection port 9a of the drainage trap 9, and the stored drainage W seals water. The effect is obtained. Although not shown, the drain pipe 10, the external water pipe 11, and the door drain pipe 12 have pipe joints of appropriate shapes at their bent portions.

Next, the operation of this drainage structure will be described. First, the drainage from the bathtub 5 flows from the drainage elbow 8 through the drainage pipe 10 and is drained from the drainage trap 9 to the outside of the unit bath 1 through the external water pipe 11. At this time, the drainage from the bathtub 5 tries to flow into the under-drain drainage pipe 12 as well, but because the under-door drainage pipe 12 is arranged at a position higher than the drainage pipe 10, the inflow (backflow) is caused. Is blocked. Further, the drainage from the washing place pan 4 flows into the drainage trap 9 and is drained to the outside through the external water pipe 11.

On the other hand, the water collected in the under-door drainage groove 7 (referred to as under-door drainage) flows from the drainage port 7a through the under-door drainage pipe 12 and into the drainage pipe 10 at the position of the pipe joint 13. . At this time, the under-door drainage is piped at a position where the under-door drainage pipe 12 is higher than the drainage pipe 10 as described above, and an end portion of the drainage pipe 12 is directed obliquely upward from the pipe joint 13 from an upper side. Since it is connected, it flows well in the drainage pipe 12 under the door and is discharged into the drainage pipe 10. The under-door drainage discharged into the drainage pipe 10 merges with the drainage in the bathtub 5 and is drained to the outside through the drainage trap 9 and the external water distribution pipe 11.

Thus, the unit bus 1 of the above embodiment
In the drainage structure, the drainage elbow 8 is arranged in the pan 3 on the bath side, the drainage trap 9 is arranged in the washing pan 4, and the drainage pipe 12 under the door is connected in the middle of the drainage pipe 10 connecting them. Since the drainage under the door collected in the drainage under the door 7 does not flow into the pan 3 on the bathtub side,
Can be flushed directly to zero. As a result, it is possible to prevent stains on the bathtub side pan 3 that are difficult to clean due to drainage under the door, and to maintain the bathtub side pan 3 clean for a long period of time.

Further, since the drainage elbow 8 having a low height is arranged on the pan 3 on the bathtub side where the bathtub 5 is installed, and the drainage trap 9 having a relatively high height is arranged on the washing pan 4, both pans 3 are provided. It is possible to effectively utilize the gap formed in the lower part of 4, and it is possible to lower the height of the unit bath 1, which is the height of the crane, and for example, to install in a high-rise house or to the second floor of a two-story house. It is possible to easily perform construction on various houses without being restricted by construction such as installation of the unit bath 1.

Further, since the drain trap 9 of the washing place pan 3 is arranged at the end portion on the counter 6 side, the water gradient of the washing place pan 4 is directed not toward the width direction but toward the counter 6 side which is the longitudinal direction of the bathtub 5. It is only necessary to provide a unit bath 1 that is easy to use, for example, when a bather sits in the washing room facing the counter 6 or the mirror, the body does not lean and can wash the body in a stable state. Obtainable. In particular, these become a great effect in the unit bath 1 in which the height of the wedge is reduced and the step of the door portion (entrance / exit portion) is eliminated, the unit bath 1 without the drainage grating, and the like.

Further, the under-drain drainage pipe 12 is piped at a position higher than the pipe height of the drainage pipe 10, and its end is connected to the connection port 13c of the pipe joint 13 which is directed obliquely upward from the upper side thereof. Therefore, the drainage under the door satisfactorily flows in the drainage pipe 12 under the door and is discharged to the drainage pipe 10, and the backflow of the drainage water from the bathtub 5 in the drainage pipe 12 under the door,
It is possible to surely prevent the backflow prevention valve 115 with a simple configuration without providing the check valve 115.

Further, three pipe joints 13 are connected to the straight portion 10b of the drainage pipe 10, and the connection ports 13 of the pipe joints 13 are connected.
Since piping can be performed by connecting the under-door drainage pipe 12 to c, the piping structure itself can be simplified and the construction cost can be reduced, and it can be easily attached to the existing unit bath 1 or the like. . Furthermore, since the connection port 9a of the drainage trap 9 is set at a position higher than the piping position of the drainage pipe 10, the drainage W stored in the drainage pipe 10 provides a sealing effect, and the external water pipe 11 It is possible to reliably prevent the drainage of water and the smell from entering the bathtub 5 or the like.

In the above embodiment, the drain elbow 8 is provided substantially at the center in the longitudinal direction of the bath 5, and the drain trap 9 is provided.
Is provided substantially at the center in the width direction of the washing place pan 4, but these positions are examples, and the drain elbow 8 can be provided near the counter 6 or the drain trap 9 can be provided on the bathtub 5 side. In addition, the drain pipe 10 in the above embodiment,
The piping structure of the external water distribution pipe 11 and the under-door drainage pipe 12 is also an example, and is appropriately changed according to the positions of the drainage elbow 8 and the drainage trap 9 and the condition of the house to be installed, for example.
Various modifications can be made without departing from the gist of each invention related to the present invention.

[0030]

As described above in detail, according to the first aspect of the invention, the drainage pipe under the door is directly connected to the drainage pipe connecting the drainage elbow of the bathtub side pan and the drainage trap of the washing place pan. Therefore, the water collected in the under-drain drainage channel can be discharged from the under-door drainage pipe to the drainage pipe to be drained to the outside, so that it does not flow into the bath-side pan and the pan can be prevented from becoming dirty. In addition, since the drain trap is provided on the faucet side of the washbasin, it is sufficient to provide an inclined water gradient on the faucet side of the washbasin, which prevents the body from leaning toward the bathtub when sitting at the washbasin. Therefore, the usability of the unit bath can be improved.

According to the invention described in claim 2, in addition to the effect of the invention described in claim 1, since the drain pipe under the door is arranged at a position higher than the drain pipe connecting the drain elbow and the drain trap, It is possible to improve the flow of the under-door drainage into the drainage pipe and reliably prevent the drainage in the drainage pipe from flowing into the under-door drainage pipe.

According to the invention of claim 3, in addition to the effect of the invention of claim 1 or 2, drainage under the door is attached to a pipe joint provided in the middle of the drainage pipe connecting the drainage elbow and the drainage trap. Since the pipes are connected, the drainage pipe can be connected to the drainage pipe under the door by using, for example, a three-pipe joint efficiently, so that the pipe structure can be simplified.

According to the invention described in claim 4, in addition to the effects of the invention described in claims 1 to 3, the external drain pipe is connected to the connection port at a position higher than the drain port of the drain elbow of the drain trap. Therefore, the effect of sealing water is obtained by the drainage that is always stored in the drainage pipe, and it is possible to prevent the drainage through the external drainage pipe and its odor from entering the bathtub.

[Brief description of drawings]

FIG. 1 is a schematic plan view showing an embodiment of a drainage structure of a unit bath according to the present invention.

FIG. 2 is a view taken along the line AA of FIG.

FIG. 3 is a sectional view taken along the line BB of FIG.

FIG. 4 is a perspective view of the same piping structure.

FIG. 5 is an enlarged view of the main part of the same.

FIG. 6 is an explanatory diagram of the enclosed water operation.

FIG. 7 is a schematic plan view of a conventional drainage structure.

FIG. 8 is a schematic plan view of another conventional drainage structure.

[Explanation of symbols]

1 ... Unit bus 2a-2d ... Wall panel 3 ... Bread on the bathtub side 4 ・ ・ ・ ・ ・ ・ Bread for washing 5 ・ ・ ・ ・ ・ ・ Bathtub 6 ... Counter 7 ・ ・ ・ ・ ・ ・ Drainage groove under the door 8 ・ ・ ・ ・ ・ ・ Drainage elbow 8a ... Drainage port 9 ・ ・ ・ ・ ・ ・ Drainage trap 9a ... Connection port 10 ... Drainage pipe 11 ... External drain pipe 12 ... Drainage pipe under the door 13 ... Piping fittings 13a to 13c ... Connection port 14 ・ ・ ・ ・ ・ ・ Water tap

─────────────────────────────────────────────────── ─── Continuation of front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) E03C 1/20 E03C 1/12

Claims (4)

(57) [Claims] 1. A unit bath drainage structure in which a bathtub is arranged on one side, a washing place is provided on the other side, and a faucet or the like is provided on one end side in the longitudinal direction of the bathtub of the washing place, wherein the bathtub is installed. The drain elbow and drain trap provided in the pan on the bathtub side, the drain trap provided on the faucet side of the wash pan in which the wash area is formed, and the drain drainage under the door provided at the bottom of the door. A drain structure for a unit bath, characterized in that a drain pipe for connecting to and is connected to the other end of the under-door drain pipe whose one end is connected to the under-door drain groove. 2. The drain structure for a unit bath according to claim 1, wherein the drainage pipe under the door is arranged at a position higher than a drainage pipe connecting the drainage elbow and the drainage trap. 3. The drainage structure for a unit bath according to claim 1, wherein the drainage pipe under the door is connected at its other end to a pipe joint provided in the middle of the drainage pipe. 4. The unit bath according to claim 1, wherein an external drainage pipe is connected to a connection port provided at a position higher than a drainage port of the drainage elbow of the drainage trap. Drainage structure.