JP2002004377A - Underfloor drainage trap - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an underfloor drainage trap which can effectively set a connecting pipe extending from a water section facility in an underfloor space in a stably connected state, if the underfloor space has a normal interval or even if the underfloor space has an interval smaller than the normal one. SOLUTION: The underfloor drainage trap 1B is formed of a tube body 20 and a trap main body 3. The tube body 20 is fitted onto an end of a drainage pipe 12 which vertically extends from the underfloor space 15 to reach a location above a surface of a floor material 10, and includes a sleeve portion 20a to which an end of a connecting pipe 6 is connected in a watertight condition. The trap main body 3 has its upper end engaged with the interior of the cylinder body 20, and its interior divided. According to the drainage trap, the sleeve portion 20a has a flange portion 20b and an engaging portion 20c which vertically protrude therefrom in outward and inward directions, respectively. Further, a female screw portion 20d is formed in the internal periphery of the sleeve portion 20a at a location above the engaging portion 20c. The drainage trap further includes a lock nut 8 to be screwed into the female screw portion 20d to fasten the drainage trap.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an underfloor drain trap suitable for being disposed in an underfloor space.

[0002]

2. Description of the Related Art Conventionally, in order to prevent backflow of sewage gas,
Drain traps are often used. As this drain trap, an S-shaped trap may be provided at an intermediate portion of a connecting pipe provided between a drain port of a water use facility such as a washroom or a washing machine and an end of a drain pipe. Drain traps are often installed in the underfloor space for reasons such as when the lower space of the equipment is narrow or when the lower space is effectively used for storing articles.

[0003]

However, in this underfloor drain trap, the trap body is installed in the underfloor space, so that the gap between the floor material and the lower wall thereof is increased like a high-rise house such as an apartment. If it cannot be secured sufficiently, it may not be installed effectively.

That is, the trap body is required to be 100 mm vertically in order to exhibit its function effectively.
A length of about 130 mm is required. Furthermore, many of the drains are not directly connected to the sewer,
In order for the wastewater that has flowed into the drainpipe to flow down the sewer without any problems, the drainpipe must be guided downward by inclining the wastewater that has flowed in along the floor material surface.
A space for that is required. For this reason, there was a drawback that the drain trap could not be effectively installed in the underfloor space.

[0005] Underfloor drain traps have also been developed that address the above shortcomings. For example, JP-A-11-269959
In this configuration, the lower end of the trap body is made to approach the upper end of the drainpipe. This conventional underfloor drain trap 30, as shown in FIG.
In order to stably connect the end port 34a of the connecting pipe 34 from the water use facility to the upper side of the trap main body 31 disposed in the opening 11 of the flooring 10 via 3, The cylindrical fitting portion 32 into which the end portion 34a is inserted is required. In addition, the fixing member 35 provided on the cylindrical body 33 allows the flange portion 34 b protruding and protruding from the outside of the end opening portion 34 a of the connecting pipe 34 to engage with the locking protrusion 32 a at the upper end of the fitting portion 32.
At the same time, it can be clamped and fixed to the cylinder 33.

Therefore, the vertical dimension of the entire trap body 31 becomes large, and the above-mentioned drawback is not sufficiently solved. That is, the floor material 10 and the lower wall 1
6 and the underfloor drain trap 30
Is installed, the fitting portion 32 is continuously provided on the upper side of the container portion 31a of the trap body 31, so that the bottom 3
The coordination in the underfloor space 15 of FIG. As a result, the distance from the bottom portion 31a to the lower wall 16 is reduced, and the drainage water that has flowed into the connecting pipe 38 connected via the elbow 37 from the drainage pipe 36 corresponding to the vertical dimension of the trap body 31 is discharged. This is because only an inclination angle β that is insufficient to flow down can be secured.

[0007] In addition, two types of drain pipes generally used are a VP (thick) type and a VU (thin) type having different inner diameters even if the pipes have the same outer diameter. For this reason, conventionally, a different underfloor drain trap is prepared for each type of drain pipe, or the thickness of the sleeve part of the cylinder to which the trap body is fitted and fixed is matched to the type of drain pipe. This problem has been dealt with by separately preparing something to do.

However, the underfloor drain trap has a restriction on the fitting structure to the drain pipe, that is, a configuration restriction that only a configuration in which the sleeve of the cylindrical body is inscribed in the drain pipe can be adopted. It is always necessary to prepare different underfloor drain traps for each type of drain pipe.
In addition to being economically disadvantageous, there are many inconveniences such as the need to confirm the type of drainage pipe used and to prepare both types of drainage pipes at the time of construction, and work such as transportation. there were.

Therefore, in the present invention, first, even if the underfloor space is not only a general space but also a space smaller than this, it is effective in a state where the connecting pipe from the water use facility is stably connected. Secondly, an object of the present invention is to provide an underfloor drain trap that can be installed under the floor, and secondly, to provide an underfloor drain trap that can be installed universally for various types of drain pipes.

[0010]

In order to achieve the above-mentioned object, the underfloor drain trap of the present invention is fitted to an end of a drain pipe provided so as to extend perpendicularly from a space below the floor to a floor material surface. A tubular body having a sleeve portion to which a connecting pipe end from the water use facility is connected in a watertight state, and an upper end portion engaged with the tubular body, and the inside is divided into an inlet chamber and a discharge chamber by a partition wall. In the underfloor drain trap comprising the trap body, the outward flange portion and the inward locking portion are respectively vertically protruded from the sleeve portion of the cylindrical body, and
An engaging portion is provided on the inner peripheral portion of the sleeve portion at a position above the locking portion, and when a fixing member is engaged with the engaging portion, the upper end of the trap body is The provided locking protrusion and the flange portion of the connecting pipe end are simultaneously held and fixed between the fixing member and the locking portion of the tubular body by this fixing member.

In the above-mentioned underfloor drain trap according to the present invention, the locking projection provided at the upper end of the trap body and the flange at the end of the connecting pipe are simultaneously provided on the locking portion provided on the sleeve of the tubular body. By being pinched and fixed, a stable connection state of the connection pipe can be secured. In addition, since there is no need for a tubular engaging portion into which the end opening of the connecting pipe is inserted at the upper portion of the conventional trap main body, the underfloor drain trap is installed with the bottom of the trap main body positioned higher. can do. Therefore, according to the underfloor drain trap of the present invention, it is possible to secure a wider space below the trap body between the underfloor space and the lower wall.

The cylindrical body can be fixed on the floor material surface with screws or the like via the flange portion, and as a result,
The entire underfloor drain trap including the trap body is fixed on the floor material.

The engagement portion of the upper inner peripheral portion of the sleeve portion of the cylindrical body is provided at the upper end of the trap body, for example, as in the case of a female screw configuration in which a lock nut as a fixing member can be screwed. Various configurations can be adopted in which the provided locking protrusion and the flange portion of the connecting pipe end can be simultaneously held and fixed to the locking portion of the tubular body.

The flange portion and the locking portion of the sleeve portion of the cylindrical body may be formed in a circular shape, or may be provided intermittently. In addition, the formation position may be the same height from the lower end edge of the cylindrical body, but may not be the same position. In particular, the flange portion may be provided at the lower end edge portion. . Further, it is preferable that the lower surface of the engaging portion is provided at a position where the lower surface is in contact with the upper end of the drainage pipe.

When the lower surface of the engaging portion is provided at a position where it comes into contact with the upper end of the drainage pipe, the lower end of the engaging portion is supported by the upper end of the drainage pipe to reinforce the engaging portion. Acts to be. In addition, the locking projection provided at the upper end of the trap body and the flange portion of the connecting pipe end are simultaneously held in the locking portion of the tubular body, thereby stabilizing the fixed state. It also works to stabilize the installation state in.

The underfloor drainage trap of the present invention includes a configuration in which the sleeve of the cylindrical body is fitted to the inner peripheral portion of the drainage pipe, and a configuration in which the sleeve is fitted to the outer peripheral portion of the drainage pipe. According to the configuration fitted to the outer peripheral portion of the drain pipe, the tubular portion of the underfloor drain trap installed on the flooring material covers the end of the drain pipe. In addition to acting to reinforce the outer peripheral portion, it can be used for various types of drainage pipes having the same outer diameter without discrimination.

Further, according to the configuration in which the sleeve of the tubular body is fitted to the outer peripheral portion of the drainage pipe, the sleeve of the tubular body is fitted to the end of the drainage pipe protruding above the floor material surface. It can respond to the configuration to be performed. This is because it is sufficient to provide the locking portion of the cylindrical body at a position corresponding to the length of the drainage pipe protruding from the floor material. With this configuration, it is possible to effectively exert the above-described cover effect on the end opening of the drain pipe, and it is possible to position the bottom of the trap body higher than the floor material surface. Thereby, with respect to the underfloor space, it is possible to secure a wider space below the trap body between the lower wall and the lower wall, and even when there is only a considerably smaller underfloor space as compared with a general underfloor space, Underfloor drain traps can be installed.

[0018]

Next, an embodiment of the present invention will be described with reference to the drawings. The underfloor drain trap 1A shown in FIGS. 1 and 2 includes a cylindrical body 2, a trap body 3, and a lock nut 8 as a fixing member.

The cylindrical body 2 has a cylindrical sleeve portion 2a, and an outward flange portion 2b and an inward locking portion 2c are vertically provided at an intermediate position thereof. Also,
A female screw portion 2d as an engaging portion is formed on the inner peripheral portion of the sleeve portion 2a above the locking portion 2c.

The trap body 3 has a container 3a and a partition wall 3b for partitioning the inside of the container 3a into an inflow chamber 4 and an exhaust chamber 5.
Consists of The trap body 3 has a locking projection 3c at the upper opening formed by the container 3a and the partition wall 3b.
The trap body 3 is engaged with the cylindrical body 2 in a state where the locking protrusion 3c is locked by the locking portion 2c and the container portion 3a is inscribed in the sleeve portion 2a.

The lock nut 8 can be screwed into the female screw portion 2d. During this screwing operation, the projecting end 8a of the lock nut 8 extends over the surface of the locking portion 2c. It has become. This lock nut 8
Is inserted in the vicinity of the flange portion 6a of the connecting pipe 6 in advance, and together with the locking projection 3c of the trap main body 3 at the time of the screwing operation to the female screw portion 2d, the connecting pipe 6 The flange portion 6a is simultaneously held and fixed between the protruding end 8a and the locking portion 2b. Therefore, when the lock nut 8 is fastened to the female screw portion 2d, the connecting pipe 6 is connected to the underfloor drain trap 1A in a stable state.

The underfloor drain trap 1 thus constructed
A is fitted with the sleeve portion 2a of the tubular body 2 in contact with the upper end 12a exposed from the opening 11 of the flooring material 10, with the lock nut 8 removed in advance. In this fitted state, the cylindrical body 2 is fixed to the floor member 10 by screwing the flange portion 2b onto the surface of the floor member 10.
The lock nut 8 described above is attached to the fixed cylinder 2.
Is fastened to the female screw portion 2d, whereby the installation of the underfloor drain trap 1A and the connection configuration of the connection pipe 6 are obtained. Further, a connecting pipe from the water use facility is connected to the other end 6b of the connecting pipe 6 in a state where the end is fastened by the fastener 7.

The underfloor drain trap 1A can be adapted to various types of drain pipes 12 by adjusting the thickness of the sleeve portion 2a of the cylindrical body 2 inscribed therein.

The underfloor drain trap 1B according to the second embodiment of the present invention is shown in FIGS. The underfloor drain trap 1B is provided with a sleeve portion 20 circumscribing the drain pipe 12.
a comprising a cylindrical body 20 having a
Other components such as the trap body 3 have the same configuration as the underfloor drain trap 1A.

As shown in FIG. 3, the cylindrical body 20 has an outward flange portion 20b and an engaging portion 20c.
It is formed similarly. In the installation configuration on the floor material 10, the upper end 12a of the drain pipe 12 is in contact with the lower surface of the locking portion 20c. Sleeve part 20a
In the upper inner peripheral portion, the same female screw portion 20d as the female screw portion 2d is provided.
Are formed. However, the opening 101 of the flooring 10 is slightly larger than the opening 11 in accordance with the thickness of the sleeve portion 20a.

In the installation configuration of the underfloor drain trap 1B, the upper end 12a of the drain pipe 12 exposed from the opening 101 of the floor material 10 is covered from the outside by the installation configuration in which the sleeve portion 20a is circumscribed. Thus, the upper end 12a of the drainage pipe 12 can be well protected on the surface of the flooring material 10, and can be applied to various types of drainage pipes 12 having the same outer diameter. .

The underfloor drain trap 1C according to the third embodiment of the present invention is shown in FIGS. The underfloor drain trap 1C is composed of a tubular body 21 applicable to a drain pipe 12 protruding upward from an opening 11 of the flooring material 10, and components other than the tubular body 21 such as the trap body 3 are described below. It has the same configuration as the underfloor drain trap 1A.

The sleeve portion 21a of the cylinder 21 has a flange portion 21b and a locking portion 21c as in the case of the cylinder 2, but the flange portion 21b is formed along the lower edge of the sleeve portion 21a. I have. The locking portion 21c is formed at a position where the upper end 12a of the drain pipe 12 protrudes from the floor 10 surface. Therefore, when the flange portion 21b is fixed on the surface of the flooring material 10, the upper end 12a of the drain pipe 12 is covered by the sleeve portion 21a, and the upper end 12a is locked by the locking portion. 21c is brought into contact with the lower surface. Therefore, according to the installation configuration of the underfloor drain trap 1C, the projecting end portion of the drain pipe 12 can be effectively protected, and a configuration in which the locking portion 21c is reinforced can be obtained.

In the configuration of the underfloor drain traps 1A to 1C shown in the above embodiment, the locking projection 3c of the trap body 3 is connected to the locking portion 2 of the cylindrical body 2, 20, or 21.
c, 20c or 21c, the bottom 3d of the container 3a of the trap body 3 of the underfloor drain trap 1B is formed by the floor material 10 and the lower wall 16, as shown in FIG. It is arranged at a position 15 a above the underfloor space 15, and a wide space area 15 b can be secured between the bottom 3 d and the lower wall 16. This is the same for the underfloor drain traps 1A and 1C.

As a result, when the position of the lower end 12b of the drain pipe 12 is set in a state where the lower end 12b of the drain pipe 12 is set so as to match the position of the bottom 3d, the lower end 12b of the drain pipe 12 is connected to the lower end 12b via the elbow 13. The connecting pipe 14 is inclined so that the waste water that has flowed into the drain pipe 12 through the guide pipe 17, the connecting pipe 7, and the trap body 3 from a water use facility such as a washroom can effectively flow down. The state of the angle α can be secured. Specifically, even when the underfloor space 15 has a standard interval of 15 cm,
This is a state in which the inclination angle is larger than the above-mentioned inclination angle β falling by 1 m or more per 50 m of horizontal distance.

A part of the wastewater flowing into the trap body 3 always accumulates in the inflow chamber 4 and the discharge chamber 5 as a storage wastewater 18, so that the odorous gas rising from the connecting pipe 14 or the like is discharged. It can be prevented from reaching the drain of the equipment used.

[0032]

As described above, since the present invention is constituted, the following effects are exhibited. According to the underfloor drain trap of the present invention, it is possible to stably fix the connecting pipe from the water use facility and install the trap body with the bottom of the trap body positioned as high as possible in the underfloor space. Since it is possible, in the underfloor space, it is possible to secure a sufficient inclination angle at which the drainage flowing into the connecting pipe connected to the drainage pipe can effectively flow down.

According to the structure in which the sleeve of the cylindrical body is fitted to the outer peripheral portion of the drainage pipe, in addition to the above-described effects, the end of the drainage pipe exposed from the opening of the floor material is protected. In this state, the underfloor drain trap can be installed on the floor material, and can be applied to various types of drain pipes as they are.

Further, according to the above-described structure, it is constructed so as to protrude from the floor material surface, and can be easily applied to a drain pipe. In this case, the present invention can be applied to various types of drain pipes, and can more effectively protect the protruding portion of the drain pipe, and can arrange the bottom of the trap body at a higher position in the underfloor space. Because it is possible, it can be installed effectively even when the vertical spacing of the underfloor space is considerably smaller than the standard 15 cm.

[Brief description of the drawings]

FIG. 1 is a vertical sectional front view of an underfloor drain trap according to a first embodiment of the present invention.

FIG. 2 is a plan view of the underfloor drain trap according to the first embodiment of the present invention.

FIG. 3 is a vertical sectional front view of an underfloor drain trap according to a second embodiment of the present invention.

FIG. 4 is a plan view of the underfloor drain trap according to the second embodiment of the present invention.

FIG. 5 is a vertical sectional front view of an underfloor drain trap according to a third embodiment of the present invention.

FIG. 6 is a plan view of the underfloor drain trap according to the third embodiment of the present invention.

FIG. 7 is a longitudinal sectional front view illustrating an effect of the underfloor drain trap according to the second embodiment of the present invention.

FIG. 8 is an explanatory longitudinal sectional front view of a conventional underfloor drain trap.

[Explanation of symbols]

 1A, 1B, 1C Underfloor drain trap 2, 20, 21 Cylindrical body 2a, 20a, 21a Sleeve 2b, 20b, 21b Flange 2c, 20c, 21c Engagement 2d, 20d, 21d Female thread 3 Trap body 3c Stop end 3d Bottom 4 Inflow chamber 5 Drainage chamber 6 Connecting pipe 6a Flange 8 Lock nut 8a Protrusion 10 Floor material 11, 101 Opening 12 Drainage pipe 12a Upper opening end 12b Lower opening end 15 Underfloor space 16 Lower wall

Claims (3)

[Claims] 1. A sleeve portion fitted to an end of a drain pipe provided so as to extend perpendicularly to a floor material surface from an underfloor space portion, and a sleeve portion to which a connection pipe end from a water use facility is connected in a watertight state. An underfloor drain trap comprising a cylindrical body and a trap body having an upper end engaged with the cylindrical body and having a partition wall internally partitioned into an inflow chamber and an exhaust chamber, wherein A flange portion and a locking portion inwardly project from each other, and an engagement portion is provided on an inner peripheral portion of the sleeve portion at a position above the locking portion. When the fixing member is engaged with this engagement portion,
The locking projection provided at the upper end of the trap body and the flange portion of the connecting pipe end are simultaneously clamped and fixed between the fixing member and the locking portion of the tubular body. Underfloor drain trap. 2. The underfloor drain trap according to claim 1, wherein the sleeve of the cylindrical body is fitted to the outer peripheral portion of the drain pipe. 3. The underfloor drain trap according to claim 2, wherein the sleeve of the tubular body is fitted to an end of a drain pipe protruding above the floor material surface.