JP4429698B2 - Bathroom unit drainage device - Google Patents

Description

  The present invention relates to a drainage device for a bathroom unit.

In the bathroom unit in which the bathtub is received from below by a bathtub pan provided adjacent to the washing pan, as shown in FIG. 4, the drainage from the bathtub pan 100 and the bathtub 200 and the drainage from the washing pan 300 Are collected in a communication pipe 400 having a trap 410, and then drained into a drain pipe 500 connected to the communication pipe 400, and as shown in FIGS. When water pressure is applied by the drainage that is going to flow backward so that the wastewater that flows into the communication pipe 400 from the flow does not flow backward to the bathtub pan 100 side through the opening 710 of the float pan 700 serving as the bathtub pan drainage port, The float valve 800 that floats by the above and closes the opening 710 from below is provided in the communication pipe 400 immediately below the float pan 700. Drainage device 900 knit B have already been proposed (e.g., see Patent Document 1).
5 and 6, reference numeral 210 denotes a bathtub drain pipe, the tip of which is inserted through an insertion hole 720 provided in the center of the float pan 700, and the drain from the bathtub 200 is drained from the bathtub pan 100. The liquid can be directly poured into the communication pipe 400 without flowing into the pipe.

Japanese Patent Laid-Open No. 2001-107412

In the case of the above drainage device, the float valve 800 can prevent the backflow of drainage to the bathtub pan 100 side, but when used for a long period of time, the float valve 800, the float pan 700 and the communication pipe line There is a risk that dirt will adhere to the inner wall surface of 400, the float valve 800 will be adsorbed to the lower surface of the float pan 700 and the inner wall surface of the communication pipe, and the opening 710 will be closed. is there. Therefore, it is necessary to clean the float pan 700 and the float valve 800 frequently.
However, it is very inconvenient and troublesome for ordinary users, such as the need to remove the apron that separates the bathtub side and the washing room side. Therefore, there is a tendency to leave the bathtub pan in a dirty state.

  In view of the above circumstances, an object of the present invention is to provide a drainage device for a bathroom unit that can prevent malfunction of the float valve as much as possible even if the frequency of cleaning the float valve is reduced.

  In order to achieve the above object, a drainage device for a bathroom unit according to the present invention communicates a washing place pan drainage outlet and a bathtub pan drainage outlet provided at a position lower than the washing place pan drainage outlet, and is connected to a drainage pipe. In a drainage device for a bathroom unit comprising a communication pipe and a float valve that floats up by this water pressure and closes the bathtub pan drainage port from below when the water pressure is applied by drainage trying to flow backward to the bathtub pan drainage port side. The bathtub pan drain outlet is provided so as to face a position shifted to one side from the center line of the float valve, and the lower end of the bathtub pan drain outlet protrudes in a lip shape below the bottom of the surrounding bathtub pan and floats up. When a part of the float valve is received by the lip-shaped protrusion and the bathtub pan drainage port is closed, the rest of the float valve and the bottom of the bathtub pan are Projections forming a gap is characterized in that it is provided on at least one of the bottom surface of the top and tub pan float valve during.

Further, in the present invention, a protrusion is provided on at least one of the lower surface of the float valve and the upper surface of the float valve receiving portion provided in the communication pipe, and the specific gravity of the float valve is less than 1. Is preferred.
The material of the float valve is not particularly limited. For example, a material that does not easily adhere to the surface is preferable. Specifically, a silicone rubber foamed in a mold or a resin foam is used. Examples thereof include those whose periphery is dipped with a soft vinyl chloride resin or the like.

  As described above, the drainage device for the bathroom unit according to the present invention has the lower end of the bathtub pan outlet projecting downward from the bottom of the surrounding bathtub pan, and a part of the float valve that is raised closes the bathtub pan outlet. When the state is set, a protrusion that forms a gap between the rest of the float valve and the bottom surface of the bathtub pan is provided on at least one of the top surface of the float valve and the bottom surface of the bathtub pan. There is little contact area with the bottom. Moreover, the bathtub pan drain outlet is provided so as to face a position shifted to one side from the center line of the float valve, that is, the bathtub pan drain outlet is closed only at a position where the float valve is biased to one side from the center line. Therefore, even if the float valve is adsorbed to the peripheral edge of the bathtub pan drainage port, the load of the drainage that has entered the bathtub pan is biased to a part of the float valve and is easily peeled off. Therefore, even if the frequency of cleaning the float valve is reduced, malfunction of the float valve can be prevented as much as possible.

Further, if the protrusion is provided on at least one of the lower surface of the float valve and the upper surface of the float valve receiving portion provided in the communication pipe, the contact area between the float valve receiving portion and the float valve Therefore, the possibility that the float valve is attracted to the float valve receiving portion and malfunctions is reduced.
Furthermore, if the specific gravity of the float valve is less than 1, the float valve is lifted not only by water pressure but also by buoyancy, and the bathtub pan drainage port can be closed more reliably.

Hereinafter, the present invention will be described in detail with reference to the drawings showing embodiments thereof.
1 to 3 show one embodiment of a drainage device for a bathroom unit according to the present invention.

As shown in FIG. 1, in the drainage device 1, the bathtub pan 2 includes a bathtub pan main body 3, a communication pipe connection member 4, and a float eye plate 5.
The bathtub pan main body 3 receives a bathtub (not shown) from below, and a connection port 31 with the communication pipe 6 is formed at the lowest position of the bottom 32.

The communication pipe connecting member 4 includes a cylindrical main body 41, a locking collar 42 projecting outward from one end of the main body 41, and projecting pipes of the float eye plate 5, which will be described later, projecting inward from the other end of the main body. And a stopper 43 for preventing a drop into the path 6.
That is, the communication pipe connecting member 4 is received by the peripheral edge portion of the connection port 31 with the packing 33 having a substantially U-shaped cross section fitted to the peripheral edge of the connection port 31 interposed. Up to this point, the main body 41 is inserted into the connection port 31 so as to be connected to the end of the communication pipe 6 on the bathtub pan side in a watertight manner.

The float eye plate 5 includes an eye plate main body 51, a connecting cylinder part 52 of the bathtub drain pipe 7, and a fitting cylinder part 53.
The eye plate main body 51 has a ring shape in which one bathtub pan drainage port 54 is formed so as to be biased toward one side from the center line CL, and its lower surface constitutes a part of the bottom surface of the bathtub pan 2. In addition, the peripheral edge of the bathtub pan drainage 54 protrudes in a lip shape on the lower surface side, and a protrusion 56 that protrudes downward at the same height as the lip-shaped protrusion 55 is formed on the remaining portion of the lower surface. 5 are provided at equal intervals on the same circumference centering on the center of the.

The connection cylinder part 52 is extended in a cylindrical shape downward from the inner edge of the ring of the eye plate main body 51, and the lower end part of the bathtub drain pipe 7 is fitted in a watertight manner. A locking member 9 of the float valve 8 is fitted.
The fitting cylinder portion 53 extends in a cylindrical shape downward from the outer edge of the eye plate main body 51 and is fitted in a watertight manner to the main body 41 of the communication pipe connecting member 4 with the packing 57 interposed therebetween. The lower end is received by the stopper 43 of the communication pipe connection member 4 so that the float pan 5 does not fall into the communication pipe 6.

The float valve 8 is formed of a material having a specific gravity of less than 1, has an inner diameter slightly larger than the outer diameter of the connecting cylinder portion 52, and has an outer diameter smaller than the inner diameter of the fitting cylinder portion 53. The stop member 9 is supported in a loosely fitted state on the connecting cylinder portion 52.
The locking member 9 includes a cylindrical fitting portion 91 and a hook-shaped float valve receiving portion 92 extending outward from one end of the cylindrical fitting portion 91, and the float valve 8 is connected to the connecting cylindrical portion 52. By fitting the other end of the cylindrical fitting portion 91 in the gap between the bathtub drain pipe 7 and the connecting cylindrical portion 52 in the loosely fitted state, the float fitting 5 is fixed below the float pan 5. The float valve 8 is locked by 92 from below.

Further, a plurality of protrusions 93 that contact the lower surface of the float valve 8 are provided on the upper surface of the float valve receiving portion 92 at equal intervals in the circumferential direction, and the float valve 8 is received by the protrusions 93 in a point contact state. ing.
The drainage device 1 is otherwise configured in the same manner as the conventional drainage device 900 described above.

The drainage device 1 is configured as described above. When a large amount of wastewater flows into the communication pipe 6 from the drain outlet or bathtub of the wash basin, and the water level in the communication pipe 6 rises, the float valve 8 It floats upward by water pressure and buoyancy, and its upper surface is received by the lip-shaped protrusion 55 and the protrusion 56. The lower end of the bathtub pan drainage port 54 is closed at a portion that is biased to one side from the center line CL of the float valve 8. The drainage in the pipe line 6 is prevented from flowing backward to the bathtub pan 2 side.
On the other hand, when the water level is lowered, the float valve 8 is lowered, and the bathtub pan drain port 54 is opened. The water is quickly drained to the communication pipe 6 side.

Further, since the bathtub pan drain port 54 is blocked only at a position where the float valve 8 is biased to one side of the center line, even if the float valve 8 is adsorbed to the lip-shaped protrusion 55, the bathtub The load of the waste water that has entered the pan 2 is applied to a part of the float valve 8 and peels off. Therefore, even if the frequency of cleaning the float valve 8 is reduced, malfunctions of the float valve 8 are rarely caused.
And since the protrusion 93 is provided in the upper surface of the float valve receiving part 92 and the contact area of the float valve receiving part 92 and a float valve is small, the float valve 8 is hard to adsorb | suck to a float valve receiving part.

  Furthermore, since the specific gravity of the float valve 8 is less than 1, the float valve 8 is lifted not only by water pressure but also by buoyancy, so that the bathtub pan drain port 54 can be closed more reliably.

The drainage device for a bathroom unit according to the present invention is not limited to the above embodiment. For example, in the above embodiment, there is one bathtub pan drain port 54, but a plurality of bathtub pan drain ports 54 may be provided as long as they are biased to one side as a whole.
In the above embodiment, the protrusion 56 is provided on the lower surface of the eye plate main body 51. However, the protrusion 56 may be provided on the float valve 8 side, or may be a protrusion instead of the protrusion 56. .

BRIEF DESCRIPTION OF THE DRAWINGS It shows one Embodiment of the drainage device of the bathroom unit concerning this invention, and is the principal part sectional drawing. It is a top view of the float eye plate part of the drainage device of FIG. It is a bottom view of the float eye plate part of the drainage device of FIG. It is a side view of the drainage device of the conventional bathroom unit. It is principal part sectional drawing of the drainage device of FIG. It is a top view of the float eye plate part of the drainage device of FIG.

Explanation of symbols

1 Drainage device 6 Communication pipe line 8 Float valve 51 Eye plate main body (bottom surface)
54 Bath Pan Drain Port 55 Lip-Like Projection 56 Projection 92 Float Valve Receiving Part 93 Projection (Projection)
CL center line

Claims (3)

The wash basin drain outlet and the bathtub pan drain outlet located at a position lower than the wash basin drain outlet are connected to each other. In the drainage device of the bathroom unit equipped with a float valve that floats up by this water pressure and closes the bathtub pan drainage port from below,
The bathtub pan drain outlet is provided so as to face a position shifted to one side from the center line of the float valve, and the lower end of the bathtub pan drain outlet protrudes in a lip shape below the bottom of the surrounding bathtub pan and floats up. When a part of the float valve is received by the lip-shaped projection and the bathtub pan drainage port is closed, the projection that forms a gap between the rest of the float valve and the bottom of the bathtub pan is a float valve. A drainage device for a bathroom unit, which is provided on at least one of the upper surface of the bathtub and the bottom surface of the bathtub pan.   The drainage device for a bathroom unit according to claim 1, wherein a protrusion is provided on at least one of a lower surface of the float valve and an upper surface of a float valve receiving portion provided in the communication pipe. The drainage device for a bathroom unit according to claim 1 or 2, wherein the specific gravity of the check valve is less than 1.