Floor drain traps and floor drain trap devices

Abstract

To provide a floor drain trap and a device for the floor drain trap, which can easily repair a floor drain trap that needs repair due to corrosion or the like without chipping the concrete on the floor and can improve the drainage function when repairing it. [Solution] This floor drain trap has a trap body (10) installed in an opening (9) in a floor (F), and the upper end of a vertical drain pipe (1) extending vertically is joined to an opening (11a) in the bottom (11) of the trap body (10). It includes a head section (31) that is open at the top and is placed in close contact with the inner circumferential surface and bottom surface of the trap body (10) via an adhesive layer (G), and a vertical pipe section (32) that penetrates the bottom of the head section (31) from top to bottom and is held by the head section (31). The vertical pipe section (32) has a cylindrical rising section (35) at its upper end and a hanging section (36) at its lower end that extends downward from the rising section (35) inside the vertical drain pipe (11) to the inside of a joint pipe (3) between the vertical drain pipe (11) and the horizontal drain pipe (2) extending horizontally below. A headed cylindrical bowl (40) is placed on the upper end of the rising section (35), and a water seal section (37) is formed between the outer circumferential surface (34) of the head section and the rising section (35).

Description

[Technical Field]

[0001] This invention relates to a floor drain trap and a device for the floor drain trap that can easily repair an existing floor drain trap and further improve its drainage function. [Background technology]

[0002] Figure 7 shows the installation structure of a conventional floor drain trap. Floor drain traps are installed on the floors of bathrooms, washrooms, store kitchens, etc., and form a water-sealing structure (water seal) midway through the drain pipe leading from the floor drain, preventing odors, gases, and pests from the sewer pipe from entering the room, thereby maintaining a comfortable indoor environment. In the figure, symbol 1 denotes the vertical drain pipe, symbol 2 the horizontal drain pipe, symbol 3 the joint pipe, symbol F the floor, symbol 4 the trap body, symbol 5 the strainer, symbol 6 the water seal, and symbol 7 the inner cylinder, on which a bowl (not shown) is placed.

[0003] With the floor drain trap shown in Figure 7, if the inner cylinder 7 of the metal trap body 4 falls off or breaks due to corrosion such as rust over time, the function of the water seal will be impaired and replacement or repair will be necessary. However, conventional floor drain traps are generally built-in (especially in older buildings), and it is necessary to chip away the concrete in the floor and either replace the entire trap body 4 or repair only a portion of it, which is expensive, takes a lot of time, and poses another problem of noise for those below.

[0004] BACKGROUND ART Various proposals have been made in the past regarding repair and restoration of floor drain traps (Patent Documents 1 to 3). [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Laid-Open No. 2006-322176 [Patent Document 2] Patent No. 5615411 [Patent Document 3] Japanese Patent Application Publication No. 6-128994 Summary of the Invention [Problem to be solved by the invention]

[0006] The repair method of Patent Document 1 involves covering the cylindrical portion of the metal trap body with a repair material made of soft synthetic resin, but deterioration of the repair material inevitably leads to rust on the cylindrical portion, and detachment or damage due to corrosion is unavoidable. The restoration method of Patent Document 2 involves the steps of cutting and polishing the straight pipe section continuing from the trap body and restoring the damaged part of the rising section, which inevitably increases the repair cost and lengthens the work time. The restoration method of Patent Document 3 uses an underwater curing adhesive to repair the damaged part of the trap body, making it difficult to consistently ensure the quality of the restoration.

[0007] The purpose of this invention was proposed in consideration of the above-mentioned problems, and is to provide a floor drain trap and a device for the floor drain trap that can easily repair a floor drain trap that needs repair due to corrosion or the like without chipping the concrete floor, and that can improve the drainage function during the repair. [Means for solving the problem]

[0008] In order to achieve the above objectives, the floor drain trap of this invention is: A floor drain trap is provided in which a bottomed cylindrical trap body with an open top is installed in an opening in the floor, and the upper end of a vertical drain pipe extending vertically is joined to the opening formed in the bottom of the trap body. The trap comprises a bottomed cylindrical head portion that is open at the top and is placed in close contact with the inner circumferential surface and bottom surface of the trap body via an adhesive layer, and a vertical pipe portion that is held by the head portion in a manner that penetrates the bottom of the head portion from top to bottom, forms a cylindrical rising portion at the top, and forms a hanging portion at the bottom that extends downward from the rising portion inside the vertical drain pipe to the inside of the joint pipe between the vertical drain pipe and the horizontal drain pipe extending horizontally below, The main feature is that a headed cylindrical bowl that forms a drainage passage inside is placed on the upper end of the cylindrical raised portion, and a water-sealing portion is formed between the side periphery of the head portion and the cylindrical raised portion.

[0009] The floor drain trap of this invention is A second feature is that the head portion and the vertical pipe portion are each made of a non-metallic material.

[0010] The floor drain trap of this invention is The third feature is that the lower end of the vertical pipe section is cut diagonally so that, when viewed from the side, the opening formed at the lower end of the vertical pipe section faces the horizontal drain pipe that is connected in an L-shape from the vertical drain pipe.

[0011] The floor drain trap device of the present invention is A device used for a floor drain trap in which a bottomed cylindrical trap body with an open top is installed in an opening in the floor, and the upper end of a vertical drain pipe extending vertically is joined to the opening formed in the bottom of the trap body, The trap comprises a bottomed cylindrical head portion that is open at the top and is placed in close contact with the inner circumferential surface and bottom surface of the trap body via an adhesive layer, and a vertical pipe portion that is held by the head portion in a manner that penetrates the bottom of the head portion from top to bottom, forms a cylindrical rising portion at the top, and forms a hanging portion at the bottom that extends downward from the rising portion inside the vertical drain pipe to the inside of the joint pipe between the vertical drain pipe and the horizontal drain pipe extending horizontally below, The main feature is that a headed cylindrical bowl that forms a drainage passage inside is placed on the upper end of the cylindrical raised portion, and a water-sealing portion is formed between the side periphery of the head portion and the cylindrical raised portion.

[0012] The floor drain trap device of the present invention is A second feature is that the head portion and the vertical pipe portion are each made of synthetic resin material. [Effects of the Invention]

[0013] As explained above, this device allows existing floor drain traps that require repair to be easily repaired in a short amount of time and at low cost without chipping the concrete floor or replacing the trap body, thereby achieving the effect of quickly restoring the water sealing function.

[0014] In addition, according to this invention, floor drainage can be guided directly to the horizontal drain pipe by the head section and vertical pipe section, thereby improving drainage function. [Brief explanation of the drawings]

[0015] [Figure 1] A structural diagram showing an example of the installation of a floor drain trap according to an embodiment of the present invention; [Figure 2] FIG. 2 is a diagram showing the structure of a trap body applied to the floor drain trap of FIG. 1; [Figure 3] A diagram showing the trap body installation tool, (A) is a side view, (B) is a top view, [Figure 4] 1 is a cross-sectional view showing a trap body installation tool; [Figure 5] FIG. 10 is a diagram showing how the trap body installation tool is inserted into an existing trap body whose inner cylindrical portion is missing; [Figure 6] FIG. 1 is a diagram showing a state in which a trap body installation tool is fixed to an existing trap body whose inner cylindrical portion is missing; [Figure 7] FIG. 1 is a diagram showing an example of installation of a conventional floor drain trap. BEST MODE FOR CARRYING OUT THE INVENTION

[0016] The present invention will be described in detail below with reference to the drawings. Figure 1 shows an example of a floor drain trap installation to which the present invention is applied. In the figure, symbol S indicates the floor drain trap, symbol 1 indicates a vertical drain pipe, symbol 2 indicates a horizontal drain pipe, and symbol 3 indicates a joint pipe.

[0017] The floor drain trap S is installed on the floor of a bathroom, washroom, store kitchen, etc., and is installed in an opening 9 formed in the floor F as shown in Figure 1, forming a water seal that stores water inside, preventing odors, gases, and pests from the sewer pipes from entering the room via the horizontal drain pipe 2 and vertical drain pipe 1.

[0018] As shown in Figure 1, the floor drain trap S comprises a trap body 10, a strainer 20, a trap body installation device 30, and a bowl 40. In the figure, symbol C1 denotes the holding concrete, symbol C2 denotes the slab concrete, symbol m denotes mortar, and symbol 8 denotes the waterproof layer.

[0019] As shown in Figures 1 and 2, the trap body 10 has a cylindrical shape with an open top and a bottom, and includes a bottom 11 and an outer cylindrical portion 12. Unlike the trap body 4 shown in Figure 7, it does not include the inner cylindrical portion 7. This includes both cases where the inner cylindrical portion 7 is not included due to reasons such as damage caused by rust, and cases where the inner cylindrical portion 7 is not included as part of the original structure. The bottom 11 has an opening 11a in the center, and a piping connection portion 13 on the underside to connect the upper end of the vertical drain pipe 1. The upper end of the outer cylindrical portion 12 is provided with a flange-shaped portion 14 that serves as a waterproof receiving portion.

[0020] The strainer section 20 smoothly guides the drainage water on the floor F to the drain outlet (opening) and prevents the intrusion of foreign matter, and is placed on the opening on the top surface of the trap body 10 via an adjustment pipe 23. The strainer section 20 comprises a metal, disc-shaped strainer (sieve) 21 with multiple openings, and a metal frame section 22 that holds the strainer 21. The adjustment pipe 23 is a short pipe that adjusts the position of the strainer 21 to match the finished surface of the floor F, and its length is adjusted to match the floor thickness.

[0021] The trap body installation device 30 is a device that forms a water seal inside the trap body 10 and guides wastewater that flows into the trap body 10 from the drain outlet (opening) in the floor F directly from the coupling pipe 3 to the horizontal drain pipe 2, and as shown in Figure 3, it is equipped with a head portion 31 and a vertical cylinder portion 32. The head portion 31 and the vertical cylinder portion 32 are each made of a non-metallic material, specifically a synthetic resin material. They may also be made of FRP material.

[0022] Of the trap body installation device 30, the head portion 31 has a cylindrical shape with a bottom and an open top, and as shown in Figure 1, the bottom 33 of the head portion 31 is fixed in close contact with the inner surface of the bottom portion 11 of the trap body 10, and the outer peripheral portion 34 of the head portion 31 is fixed in close contact with the inner surface of the outer cylindrical portion 12 of the trap body 10 using an underwater curing adhesive G.

[0023] 4, the vertical cylinder portion 32 of the trap body installation device 30 passes vertically through the center of the bottom portion 33 of the head portion 31, and is fixed and held in a vertical position extending vertically relative to the bottom portion 33 of the head portion 31. As shown in FIG. 1, when the head portion 31 is placed in close contact with the inside of the trap body 10, this vertical cylinder portion 32 forms a cylindrical rising portion 35 at the top, and a cylindrical hanging portion 36 at the bottom that extends downward from the rising portion 35 inside the vertical drain pipe 1 to reach the inside of the joint pipe 3 between the vertical drain pipe 1 and the horizontal drain pipe 2 extending horizontally below.

[0024] The cylindrical rising portion 35 has a height equivalent to the inner cylindrical portion 7 in Fig. 7, and as shown in Fig. 1, forms a water sealing portion 37 with a predetermined water sealing depth (d = 50 mm to 100 mm) between the outer circumferential portion 34 of the head portion 31 and the rising portion 35. In addition, inside the rising portion 35 and inside the hanging portion 36, water passing portions 38 are formed which communicate with the water sealing portion 37 and the upper end opening of the vertical drain pipe 1, respectively.

[0025] 1, the lower end of cylindrical hanging portion 36 is cut at an angle so that opening 36a formed at the lower end faces horizontal drain pipe 2, which is connected in an L-shape (inverted L-shape in the illustrated example) from vertical drain pipe 1 via joint pipe 3, in a side view. This prevents wastewater flowing down inside cylindrical hanging portion 36 from flowing down near the inner surface of vertical drain pipe 1 (and therefore from leaking out through the gap at the connection with joint pipe 3), and also prevents the water from bouncing around inside joint pipe 3, and is guided directly and smoothly from inside joint pipe 3 to inside horizontal drain pipe 2.

[0026] 1, bowl 40 has a headed cylindrical shape and includes a peripheral side portion 41, and is placed on the upper end of rising portion 35 of vertical cylindrical portion 32 by means of protruding ribs 42 provided on the inner surface. In this placed state, bowl 40 is arranged with peripheral side portion 41 maintaining a gap between rising portion 35 of vertical cylindrical portion 32 and outer periphery 34 of head portion 31, thereby ensuring a drainage passageway inside that continues from the inner space of outer periphery 34 of head portion 31 to water passage portion 38.

[0027] 5 and 6 show how the trap body installation tool 30 is installed on the existing trap body 10. The existing trap body 10 has a damaged inner cylinder due to long-term use.

[0028] The storage (sieve) 21 of the storage section 20 is removed, and as shown in Figure 5, an underwater curing adhesive G is applied to a predetermined thickness on the inner surface and bottom surface (around the opening 11a) of the existing trap body 10.

[0029] Next, as shown in FIG. 5, the trap body installation tool 30 is inserted into the trap body 10 and the vertical drain pipe 1 from above.

[0030] As shown in Figure 6, the head portion 31 of the trap body installation device 30 is fixed in place by adhering it to the trap body 10 from its inner circumferential surface to its bottom surface with underwater curing adhesive G. The vertical cylindrical portion 32 has a hanging portion 36 that extends downward inside the vertical drainage pipe 1 to reach the inside of the joint pipe 3, and the diagonally cut lower end opening 36a is adjusted so that it faces the horizontal drainage pipe 2 when viewed from the side.

[0031] Finally, as shown in FIG. 1, the bowl 40 is placed on the upper end of the rising portion 35 of the vertical cylinder portion 32, and the storage (sieve) 21 of the storage portion 20 is set.

[0032] As shown in Figure 1, a water sealing section 37 with a predetermined water sealing depth (d = 50 mm to 100 mm) is formed between the outer periphery 34 of the head section 31 and the cylindrical rising section 35, and a drainage passage leading to the water passage section 38 is formed inside the bowl 40.

[0033] According to this embodiment, the trap body installation device 30 can be fixed in close contact with the existing trap body 10 using underwater curing adhesive G, making it possible to easily repair the trap and restore its initial water sealing function.

[0034] Furthermore, unlike conventional methods, there is no need to chip the floor F before repairing the trap body or to restore the floor F after repair, which reduces the time and cost involved in these tasks, and there is no problem with noise caused to the floor below due to chipping.

[0035] The trap body installation tool 30 can be made of non-metallic materials such as synthetic resin or FRP, and does not have the problems of chipping or missing due to rust or the like that occur in conventional devices.

[0036] In addition, according to this embodiment, the hanging portion 36 of the vertical cylindrical portion 32 is long enough to reach the inside of the joint pipe 3, and the diagonally cut lower end opening 36a of the hanging portion 36 faces the horizontal drain pipe 2 when viewed from the side.Therefore, the wastewater flowing down the inside of the cylindrical hanging portion 36 does not leak from the joint between the vertical drain pipe 1 and the joint pipe 3 or bounce back inside the joint pipe 3, but is guided directly and smoothly from the inside of the joint pipe 3 to the inside of the horizontal drain pipe 2.

[0037] In the above embodiment, the present invention is applied to an existing trap body 10, but it can also be applied to new constructions where a floor drain trap is being newly installed. In this case, a trap body that does not originally have a central cylindrical portion can be used, or a recycled trap body with a missing central cylindrical portion can be used.

[0038] This device can be widely applied to floor drainage systems in bathrooms and washrooms in ordinary homes and apartment buildings, as well as in stores, factories, office buildings, public facilities such as schools and hospitals, and accommodation facilities. [Industrial Applicability]

[0039] The present invention can be used as a floor drain trap and as a device for a floor drain trap. [Explanation of symbols]

[0040] 1 vertical drainage pipe 2 Side drain pipe 3. Joint pipe 4,10 Trap body 5,20 Strainer section 6,37 Water sealing section 7 Inner cylinder 8 waterproof layer 9,11a,36a opening 11,33 bottom 12, outer cylinder 13 Piping connection 14 Flange 21 Strainer 22 Frame 23 Adjustment tube 30 Trap body installation tool 31 Head 32 Vertical cylinder part 34 Outer periphery 35 Rising section 36 Drooping part 38 Water flow section 40 bowls 41 Side circumference 42 Ribs C1 Concrete C2 Slab concrete F floor G Underwater curing adhesive m Mortar S Floor Drain Trap

Claims

1. A floor drain trap is provided in which a bottomed cylindrical trap body with an open top is installed in an opening in the floor, and the upper end of a vertical drain pipe extending vertically is joined to the opening formed in the bottom of the trap body. The trap comprises a bottomed cylindrical head portion that is open at the top and is placed in close contact with the inner circumferential surface and bottom surface of the trap body via an adhesive layer, and a vertical pipe portion that is held by the head portion in a manner that penetrates the bottom of the head portion from top to bottom, forms a cylindrical rising portion at the top, and forms a hanging portion at the bottom that extends downward from the rising portion inside the vertical drain pipe to the inside of the joint pipe between the vertical drain pipe and the horizontal drain pipe extending horizontally below, A floor drain trap characterized in that a headed cylindrical bowl forming a drain passage inside is placed on the upper end of the cylindrical raised portion, and a water seal is formed between the side periphery of the head portion and the cylindrical raised portion.

2. 2. The floor drain trap of claim 1, wherein said head portion and said vertical pipe portion are each constructed from a non-metallic material.

3. A floor drain trap as described in claim 1 or claim 2, characterized in that the lower end of the vertical pipe section is cut diagonally so that, when viewed from the side, the opening formed at the lower end of the vertical pipe section faces the horizontal drain pipe that is connected in an L-shape to the vertical drain pipe.

4. A device used for a floor drain trap in which a bottomed cylindrical trap body with an open top is installed in an opening in the floor, and the upper end of a vertical drain pipe extending vertically is joined to the opening formed in the bottom of the trap body, The trap comprises a bottomed cylindrical head portion that is open at the top and is placed in close contact with the inner circumferential surface and bottom surface of the trap body via an adhesive layer, and a vertical pipe portion that is held by the head portion in a manner that penetrates the bottom of the head portion from top to bottom, forms a cylindrical rising portion at the top, and forms a hanging portion at the bottom that extends downward from the rising portion inside the vertical drain pipe to the inside of the joint pipe between the vertical drain pipe and the horizontal drain pipe extending horizontally below, A floor drain trap device characterized in that a headed cylindrical bowl forming a drain passage inside is placed on the upper end of the cylindrical raised portion, and a water seal is formed between the side periphery of the head portion and the cylindrical raised portion.

5. 5. The floor drain trap device according to claim 4, wherein said head portion and said vertical pipe portion are each made of a synthetic resin material.

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