JP3971259B2 - Drain trap - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to drain traps such as a wash basin, a sink, a bathtub, and a waterproof pan.
[0002]
[Prior art]
Conventionally, drainage from sinks, sinks, bathtubs, or waterproof pans used for them is connected to horizontal pipes where equipment drainage pipes from each drainage outlet are placed under the floor, and these horizontal pipes are connected under the floor. It was inclined and arranged with a certain gradient, and this was connected to a vertical pipe and used for drainage.
[0003]
For this reason, there are many joints between the pipes under the floor, and the horizontal pipe must be given a certain gradient, and furthermore, a sealing portion that is a backflow prevention function must be added. Space was widely required. Moreover, the fact that there are many joints between pipes increases the risk of water leakage, and because it is under the floor, maintenance is extremely laborious and expensive.
[0004]
In recent years, the applicant has proposed a drainage system that utilizes the so-called siphon phenomenon in which equipment drainage pipes are directly connected to vertical pipes without using horizontal pipes. This system is characterized in that there is no connection between drain pipes and the space under the floor may be narrow.
[0005]
[Problems to be solved by the invention]
The present invention provides a new drain trap that is favorably used in drainage systems utilizing siphon phenomenon, and is a drain trap that is extremely simple to connect with pipes used for drain traps and that is easy to maintain. It is what we propose.
[0006]
[Means for Solving the Problems]
The gist of the present invention is that a drain trap body portion attached to surround a hole opened in a drainage floor, the drain trap body portion having a water receiving portion, and having a diameter smaller than that of the water receiving portion. A cylindrical drooping portion having a convex step portion for receiving the waterstop material from the lower side is provided, the upper portion is housed in the drooping portion, and the concave step portion for sandwiching the first waterstop material from the upper side and the lower inner side A cylindrical groove body is inserted into and fixed to the cylindrical hanging portion, and is opposed to the inclined surface. The drainage trap has an outer surface that has a collet fitted with a claw on the inner surface.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
In the drain trap of the present invention, the cylindrical lock main body is housed in the drain trap main body, the first water-stopping material that seals between these is disposed, and the pipe in the cylindrical lock main body is between the pipes. A second water-stopping material that seals and a collet having claws that bite into the surface of the pipe are disposed, and an inclined surface is formed facing the collet. When the drainage pipe is inserted into the cylindrical lock main body, the second water stop material prevents water leakage, and the collet claw bites into the surface of the pipe. When drainage begins, the pipe slightly recedes due to the water pressure, but the outer surface of the collet and the inclined surface of the cylindrical lock body begin to contact each other, and as the water pressure increases, the collet moves inward at this inclined surface. It becomes a state where it is pressed down, and more and more nails bite into the surface of the pipe and become unable to separate.
[0008]
Of course, this pipe is easy to insert and, in other words, has an automatic water shut-off function and the seal between them is more complete.
[0009]
On the other hand, during maintenance, if the drain trap body is disassembled and pulled up from the drain floor side and the pipe is reinserted back to the original position, the collet and the inclined surface of the cylindrical lock body are pushed. The pressure is released and it can be easily removed.
[0010]
Preferably, the drain trap body is made of synthetic resin, and is divided into two parts, the front side and the back side of the drainage floor, and both are integrated by screwing so as to achieve the above functions. good.
[0011]
The cylindrical lock main body is preferably made of synthetic resin, and the structure thereof is preferably a structure in which a portion where an inclined surface is formed on the inner side of the distal end side is integrated by screwing.
[0012]
The first water stop material and the second water stop material may be rubber-like O-rings.
[0013]
Then, it is preferable that a sheath tube is fitted to the outside of the drain trap body, which makes it very easy to replace the pipe.
[0014]
The pipe used is, for example, a pipe made of synthetic resin such as polybutene, and a sleeve is preferably fitted in order to bite the tip of the collet claw. The material of the collet may be a metal or a synthetic resin, but is preferably made of a synthetic resin that can be injection-molded from the viewpoint of manufacturing and economy. Further, the claw portion may be a metal annular body, and a collet in which this is embedded in a resin.
[0015]
【Example】
Hereinafter, the drain trap of the present invention will be described in more detail with reference to the drawings. 1 is a perspective view and a half cut sectional view showing the entire structure of the present invention from the front side, FIG. 2 is an enlarged partial perspective view and an enlarged partial half cut sectional view showing the structure from the front side, and FIG. 3 is a view from the back side. It is an enlarged partial perspective view and an enlarged partial cutaway sectional view. FIG. 4 is a partial view of a siphon drainage mechanism to which the drain trap of the present invention is applied.
[0016]
In the figure, reference numeral 1 denotes a floor pan. The floor pan 1 has a hole 2 for a drain trap. Reference numeral 3 denotes a drain trap body, which is fixed with a floor pan 1 sandwiched between a pair of disks 4 and 5. In this example, the drain trap main body 3 is divided into two parts, a main body upper part 3a composed of a cylindrical part 6 and a disk 4 fitted into the hole 2, a disk 5 and a main body lower part 3b forming a lower part thereof. The two are screwed together. An inward flange portion 7 is formed in the main body upper portion 3a, and a lid 8 is fitted therein. On the other hand, a water receiving portion 9 is formed in the main body lower portion 3b, and then a drooping portion 10 having a smaller diameter is formed. An inwardly protruding step portion 11 for receiving a first water stop material to be described later from below is provided. Is formed.
[0017]
The cylindrical lock body 12 is formed with an outward flange portion 13 whose upper end is housed in the hanging portion 10, and is a concave step portion 14 that sandwiches the first water-stopping material from above on the lower surface. A circumferential groove 15 that receives the second water blocking material is formed on the inner side of the lower portion, and an inclined surface 16 that is inclined toward the inner side is formed on the tip thereof. In this example, the cylindrical lock body 12 is formed as a separate body 16a where the inclined surface 16 is formed and integrated by screwing.
[0018]
A collet 19 having an inclined surface 17 whose outer surface has substantially the same inclination as the inclined surface 16 and provided with a claw 18 on the inner side is accommodated in the cylindrical lock body 12. The claw 18 functions to bite into the surface of the pipe described later.
[0019]
The cylindrical lock main body 12 needs to be fixed to the main body lower portion 3b. In this example, the annular body 20 is screwed onto the inner periphery of the main body lower portion 3b from above the flange portion 13 and fixed. is there. In this example, the annular body 20 is provided with a net body 20a at the center and used as a hair catcher.
[0020]
The first water-stop material is a rubber-like O-ring 21, which provides a seal between the main body lower portion 3 b and the cylindrical lock main body portion 12.
[0021]
The second water stop material is a rubber-like O-ring 22, which provides a seal between the cylindrical lock main body 12 and the pipe.
[0022]
A pipe 23 made of, for example, polybutene, which is used for drainage, is inserted from the lower end of the cylindrical lock body 12, and a pipe support sleeve 24 is inserted into the tip of the pipe lock sleeve 24, so that the claw 18 of the collet 19 is inserted. opposite.
[0023]
The pipe 23 is first inserted from the lower end of the cylindrical lock main body 12 and inserted to a predetermined depth. In this example, a stepped portion 12a is formed at the deepest portion of the cylindrical lock main body 12, and the insertion is complete when the tip of the pipe 23 comes into contact therewith. When water pressure is applied to the pipe 23 during drainage or the like, the pipe 23 is pushed downward together with the collet 19 with the claws 18 biting in, but the inclined surface 17 of the collet 19 and the cylindrical lock body 12 side The collet 19 moves while being pushed toward the center. For this reason, the claw 18 of the collet 19 bites into the surface of the pipe 23 more deeply, so that the pipe 23 is prevented from being detached or leaking.
[0024]
On the other hand, at the time of maintenance, the hair catcher 20 is unscrewed, the cylindrical lock body 12 is taken out upward, and the pipe 23 is inserted to the first deepest part, so that the bite with the claw 18 of the collet 19 is released. The pipe 23 can be pulled out here. Of course, it is preferable to unscrew a member constituting the lowermost inclined surface portion of the cylindrical lock main body portion 12.
[0025]
As shown in FIG. 4, the pipe 23 according to the present invention only needs to be rubbed on the slab 30, and it is not necessary to add a gradient to the pipe 23. In addition, there is no need for maintenance at this point. A relatively thin pipe is sufficient. In the figure, the tip of the pipe 23 on the slab 30 is provided with an inverted U-shaped pipe 31, and the tip of the pipe 23 is further connected to the standpipe 32 at a lower position. Hangs around. Now, the pipe 23 between the inverted U-shaped pipe 31 and the cylindrical lock main body 12 is normally in a state where drainage is accumulated, and when the amount of drainage is further added to the pipe 23, the water in the interior becomes the inverted U-shaped pipe. It will pass over 31 and flow away. For this reason, it is not necessary to give the pipe 23 a gradient, and further, the pipe 23 itself becomes a sealing portion and serves to suppress bad odors from below.
[0026]
【The invention's effect】
The drain trap of the present invention is as described above, and it is possible to provide an extremely safe drain trap that is easy to assemble and remove during maintenance, and that does not leak water.
[Brief description of the drawings]
FIG. 1 is a perspective view and a half-cut sectional view showing an overall structure from the front side of a drain trap according to the present invention.
FIG. 2 is a partially enlarged perspective view and a partially enlarged half sectional view of FIG. 1;
3 is a partially enlarged perspective view showing a structure from the back side of FIG. 1 and a half cut sectional view thereof. FIG.
FIG. 4 is a conceptual diagram showing a siphon drainage mechanism to which the drain trap of the present invention is applied.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Floor pan, 2 ... Drain trap hole, 3 ... Drain trap body part, 3a ... Drain trap body upper part, 3b ... Drain trap body lower part, 4, 5 ... Disc part, 6 ... Cylindrical part, 7 ... Flange part 8: Lid, 9: Water receiving part, 10: Hanging part, 11: Inwardly protruding step part, 12 ... Cylindrical lock body part, 13 ... Outward flange part, 14 ... Concave step part, 15 ... Circumferential groove 16. Inclined surface on the cylindrical lock body, 16 a. Bottom end member of the cylindrical lock body, 17. Inclined surface on the outer surface of the collet, 18. Collet claw, 19. Collet, 20. Hair catcher), 21 ... first water stop material (rubber-like O-ring), 22 ... second water stop material (rubber-like O-ring), 23 ... pipe, 24 ... sleeve, 30 ... Slab, 31 ... inverted U-shaped pipe, 32 ... vertical pipe.

Claims (8)

A drain trap body attached around a hole drilled in the drain floor, and the drain trap body includes a water receiving portion, and the first water stop material having a diameter smaller than that of the water receiving portion is lowered. A cylindrical drooping portion having a convex step received from the side is provided, the upper portion is housed in the drooping portion, and a concave step portion sandwiching the first waterstop material from the upper side and a second waterstop material inside the lower portion A cylindrical lock main body portion having a circumferential groove formed on the front end and having an inclined surface on the inside is inserted and fixed in the cylindrical hanging portion, and has an outer surface facing the inclined surface. A drain trap characterized by a collet with claws fitted on the surface. The drain trap according to claim 1, wherein the main body is divided into a front side and a back side of a floor for drainage, and both are integrated by screwing. The drainage trap according to claim 1 or 2, wherein a portion of the cylindrical lock main body where the inclined surface is formed on the inner side of the distal end side is integrated by screwing. The drain trap according to claim 1, wherein the first water stop material is a rubber-like O-ring. The drain trap according to claim 1, wherein the second water-stopping material is a rubber-like O-ring. The drainage trap according to any one of claims 1 to 5, wherein a sheath pipe is fitted to the outside of the main body. The drainage trap according to any one of claims 1 to 6, wherein a pipe in which a pipe support sleeve that reaches the collet is inserted inside the tubular hanging portion is inserted. The drainage trap according to claim 7, wherein the pipe fitted in the cylindrical hanging part is a polybutene pipe.

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