JP2003082725A - Drain pipe structure and saddle joint - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an easily constructable drain pipe structure and a saddle joint. SOLUTION: This drain pipe structure is characterized in that the saddle joint 2 is installed on an outer peripheral surface of a main drain pipe 1 precedently laid under the floor of a building by covering a peripheral edge part of a through hole 11 of a pipe wall, and the other end of a branch pipe 3 having one end connected to a drain port of an equipment-apparatus arranged in the building is connected to the main drain pipe 1 via the saddle joint 2.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a drainage pipe structure,
It relates to a saddle joint used for this.

[0002]

2. Description of the Related Art In the conventional drainage piping structure for a building described in Japanese Patent Laid-Open No. 2001-11927, a drainage main pipe is installed in a state of being exposed under the floor, and the drainage main pipe is connected to each drainage facility of the building. Branch pipes are connected to drain water. The main drain pipe and the branch pipe are connected via a cheese joint (T-type joint or TY-type joint).

[0003]

However, in the drainage pipe structure as described in the above publication, the drainage main pipe must be cut at each confluence of branch pipes, and the cut drainage main pipe must be added through a cheese joint or the like. I won't. For this reason, there is a problem that the number of construction steps is increased. In addition, since there are many connection points, the rate of water leakage due to defective construction is high. Furthermore, when adding a branch pipe to the drainage main pipe after construction or moving the branch pipe to a different position, due to the structure of the joint,
Must be inserted at a position offset from the existing branch pipe,
In some cases, it cannot be installed.

The present invention solves the above-mentioned drawbacks and provides a drainage pipe structure and a saddle joint which are easy to construct.

[0005]

The invention according to claim 1 is
A saddle joint is attached to the outer peripheral surface of the drainage main pipe that was previously piped under the floor of the building in advance, covering the peripheral portion of the through hole of the pipe wall, and one end of the saddle joint is connected to the drain port of the equipment installed in the building. The other end of the branch pipe is connected to the main drainage pipe through the saddle joint, which is a drainage piping structure.

According to a second aspect of the present invention, a plate-shaped saddle body having a substantially semi-circular cross section which is attached to the outer peripheral surface of the drainage main pipe so as to cover the peripheral portion of the through hole of the pipe wall, and communicates with the through hole. In a saddle joint comprising a tubular branch portion projecting from the surface of the saddle body and connected to a branch pipe that joins the main drainage pipe, the saddle body is formed so that its cross-sectional shape has an arc angle exceeding 180 degrees. It is characterized by being

According to a third aspect of the present invention, in the saddle joint according to the second aspect, a rear side of the saddle body of the tubular branch portion has a protruding portion that can be inserted into a through hole of the drainage main pipe. To do.

According to a fourth aspect of the present invention, in the saddle joint according to the third aspect, a ring-shaped water blocking material is provided on an outer peripheral portion of the protruding portion on the rear surface side of the saddle body.

According to a fifth aspect of the present invention, in the drainage pipe structure according to the first aspect, the drainage pipe structure is connected via the saddle joint according to any one of the second to fourth aspects.

(Operation) According to the drainage piping structure of the present invention as set forth in claim 1, the drainage main pipe is piped in advance under the floor of the building, and the peripheral edge of the through hole of the pipe wall is formed on the outer peripheral surface of the drainage main pipe. The saddle joint is attached to cover. And, since the other end of the branch pipe, one end of which is connected to the drainage port of the equipment installed in the building, is connected to the drainage main pipe through the saddle joint, the branch pipe is not cut without cutting the drainage main pipe. Connection is possible and construction is easy. In addition, at the time of remodeling, it is possible to easily add a branch pipe confluence without cutting the main drainage pipe.

According to the saddle joint of the second aspect, since the cross-sectional shape of the saddle body is formed to have an arc angle exceeding 180 degrees, the saddle body is pushed open and mounted on the outer peripheral surface of the main drain pipe. For example, the saddle body can be temporarily fixed to the outer peripheral surface of the drain main pipe by the restoring force. Therefore, when using the bonding method, make sure it does not come off before the adhesive is cured.
This eliminates the need for tightening and fixing work such as tightening bands, and facilitates construction.

According to the saddle joint of the third aspect, further, since the back surface side of the saddle body of the tubular branch portion has a projecting portion that can be inserted into the through hole of the main drainage pipe, this projecting portion is formed into the through hole. If the saddle joint is inserted and attached, the saddle joint can be attached without misalignment.

According to the saddle joint of the fourth aspect, since the ring-shaped water stopping material is provided on the outer peripheral portion of the projecting portion on the rear surface side of the saddle body, the water stopping performance at the peripheral portion of the through hole is secured, and the saddle body is secured. It can be installed without leaking water by simply fitting it into the main drain pipe without using an adhesive. Therefore, the construction method becomes easier.

A drainage pipe structure according to a fifth aspect is the first aspect.
In the drainage pipe structure described above, since it is connected via the saddle joint according to any one of claims 2 to 4, in addition to the action of the invention according to claim 1, The effect of the invention described in 4 is exerted.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION (Drainage Pipe Structure) FIGS.
1 is an embodiment of the present invention relating to a drainage pipe structure, FIG. 1 is an exploded perspective view of the drainage pipe structure, and FIG.
It is a top view of a building provided with the drainage piping structure of.

In FIG. 1, 1 is a drainage main pipe, 2 is a saddle joint, and 3 is a branch pipe. In the drainage piping structure of the present embodiment, as shown in FIG. 2, the drainage main pipe 1 is piped under the floor of the building, and the saddle joint 2 is attached to the outer peripheral surface of the drainage main pipe 1 (see FIG. 1). The branch pipe 3 is connected to the main drainage pipe 1 via the saddle joint 2 (see (a) in FIG. 1) (see (b) in FIG. 1). The drainage main pipe 1 is formed with a through hole 11 penetrating its wall, and the saddle joint 2 is attached so as to cover the peripheral portion of the through hole 11. Further, one end of the branch pipe 3 has a bathtub 4A, a vanity 4B installed in the building,
... is connected to the drainage port of the equipment, and the other end of the branch pipe 3 is connected to the main drainage pipe 1 via the saddle joint 2.

The drainage main pipe 1 is a cylinder and is made of a hard vinyl chloride resin or a synthetic resin such as polyethylene. As shown in FIG. 2, the drainage main pipe 1 is placed in an underfloor space of a building surrounded by a building foundation 6. It is piped in advance so as to traverse from one side to the other side. One end 12 of the drainage main pipe 1 on one side of the underfloor space is closed by a blind plate or the like, and the other end of the drainage main pipe 1 penetrates the rising wall of the building foundation 6 to the outside of the building foundation 6, It is connected to the outdoor masses 5A and 5B buried in the inside of the vehicle.

The branch pipes 3 joined and connected to the main drain pipe 1 are composed of a plurality of branch pipes, and one end of each of the branch pipes 3 has a bathroom unit 4A, which is a facility device installed in the building, a vanity 4B, Toilet toilet 4C, handwasher 4D, laundry pan 4
E, connected to each drain of the kitchen sink 4F, etc.

(Saddle Joint) FIGS. 3 to 5 show an embodiment of the present invention relating to a saddle joint, FIG. 3 is a perspective view of the saddle joint, and FIG. 4 is a rear view of the saddle joint of FIG. FIG. 5 is a perspective view seen from above, and FIG. 5 is a sectional view of the saddle joint of FIG. 3.

The saddle joint 2 of this embodiment is used in the drainage pipe structure described above, and is made of a hard vinyl chloride resin or a synthetic resin such as polyethylene like the drainage main pipe 1. As shown in FIG. 3, the saddle joint 2 includes a plate-shaped saddle body 21 having a substantially semicircular cross section.
And a tubular branch portion 22 projectingly provided on the surface of the saddle body 21 so as to communicate with the through hole 11 of the drainage main pipe 1, and the tubular branching portion 22 is connected to the branch pipe 3 that joins the drainage main pipe 1. It

The saddle body 21 is a short cylinder whose inside diameter is substantially the same as the outside diameter of the drainage main pipe 1 and is cut out in a substantially semi-circular shape in cross section, and its back side is brought into contact with the outer peripheral surface of the drainage main pipe 1. The drainage main pipe 1 is attached so as to cover the peripheral portion of the through hole 11 in the pipe wall. As shown in FIG. 5, the cross-sectional shape of the saddle body 21 is formed with an arc angle a exceeding 180 degrees.

As shown in FIG. 3 and FIG. 5, the tubular branch portion 22 is a receiving opening having an insertion opening 25 formed at the tip thereof for inserting the branch pipe 3, and the insertion opening 25 has an end portion of the branch pipe 3. Is inserted and connected.

As shown in FIG. 4, the base end portion of the tubular branch portion 22 is projected to the rear surface side of the saddle body 21, and the drain main pipe 1
It has a protrusion 23 that can be inserted into the through hole 11. That is, the outer diameter of the protruding portion 23 is set to be slightly smaller than the through hole 11 of the main drain pipe 1.

As shown in FIGS. 4 and 5, the saddle body 21
A ring-shaped water blocking material 24 (rubber packing) is provided on the outer peripheral portion of the protruding portion 23 on the back surface side of the above so as to stop the peripheral portion of the through hole 11 of the main drainage pipe 1.

(Construction Method of Drainage Pipe Structure) A construction method of drainage pipe of a building using the saddle joint 2 will be described with reference to FIGS. 1 and 2. (1) After the construction of the building foundation 6, install the drainage main pipe 1 from one side under the floor to the other side. The drainage main pipe 1 shown in FIG. 2 is formed by one straight pipe extending straight, but it may be bent. (2) Confirm the position of the outlet from the drain port of each equipment to the underfloor, and mark the position of the through hole 11 of the main drain pipe 1 according to the outlet. (3) At each marked position of the main drainage pipe 1, a through hole 11 is formed by punching the pipe wall with a core removing machine (holsaw). (4) The opening of the saddle body 21 having a semi-circular cross section is pushed open to fit the saddle joint 2 into the drainage main pipe 1, and the projecting portion 23 of the tubular branch portion 22 projecting to the back side of the saddle body 21 is punched. Fit into the through hole 11. At this time, the saddle body 21 and the drainage main pipe 1 are attached to the projecting portion 23 by the water blocking material 24.
May be attached and fitted and joined without an adhesive, or an adhesive may be applied to the back surface side of the saddle body 21 and adhesively joined. (5) Insert the other end of the branch pipe 3, one end of which is connected to the drainage port of the equipment, into the tubular branch portion 22 of the saddle joint 2 for connection.

(Operation of Embodiment) According to the drainage piping structure of this embodiment, the drainage main pipe 1 is previously installed under the floor of the building, and the through hole 1 of the pipe wall is formed on the outer peripheral surface of the drainage main pipe 1.
1 A saddle joint 2 is attached to cover a peripheral portion. Since the other end of the branch pipe 3 whose one end is connected to the drainage port of the equipment installed in the building is connected to the drainage main pipe 1 via the saddle joint 2, the drainage main pipe 1 is not cut. The branch pipe 3 can be connected to the pipe, which facilitates the construction. In addition, at the time of remodeling, it is possible to easily add a merging portion of the branch pipe 3 without cutting the drainage main pipe 1.

According to the saddle joint 2 of this embodiment, since the cross-sectional shape of the saddle body 21 is formed with the arc angle a exceeding 180 degrees, the opening of the saddle body 21 is widened and the main drainage pipe is opened. If it is fitted into the outer peripheral surface of the drainage pipe 1, the saddle body 21 can be temporarily fixed to the outer peripheral face of the drainage main pipe 1 by the restoring force. Therefore, in the case of the bonding method, it is not necessary to tighten and fix the tightening band or the like so as not to come off before the adhesive is hardened, and the construction is facilitated. Also, a small amount of adhesive is sufficient.

Furthermore, since the back side of the saddle body 21 of the tubular branch portion 22 has a protrusion 23 that can be inserted into the through hole 11 of the main drain pipe 1, this protrusion 23 is used as the through hole 1.
1 and attach the saddle joint 2 to the saddle joint 2
Can be attached without slipping.

Furthermore, since the ring-shaped water blocking material 24 is provided on the outer peripheral portion of the projecting portion 23 on the rear surface side of the saddle body 21, the water blocking of the peripheral portion of the through hole 11 is ensured and the saddle body 21 is drained. It can be attached without water leakage by simply fitting it into the main pipe 1. Therefore, the construction method becomes easier.

Although the drainage pipe structure and the saddle joint of the present invention have been described based on the embodiments, the present invention is not limited to the above embodiments.

[0031]

According to the drainage pipe structure of the present invention as set forth in claim 1, since the branch pipe can be connected without cutting the drainage main pipe, the number of drainage main pipe connection points can be reduced and the number of steps can be reduced by simplifying the construction. it can.

According to the saddle joint of the second aspect, it is not necessary to tighten and fix the tightening band or the like so that the saddle joint does not come off until the adhesive is hardened. Therefore, the unit cost of the material can be reduced and the construction is easy. .

According to the saddle joint of the third aspect, the saddle joint can be attached without displacement.

According to the saddle joint of the fourth aspect, the waterproofness of the peripheral portion of the through hole is further ensured, the connection only by fitting is possible, and the construction method is further facilitated.

The drainage pipe structure according to claim 5 is the same as that according to claim 1.
In addition to the effects of the described invention, the effects of the inventions of claims 2 to 4 are exhibited.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing an embodiment of a drainage pipe structure of the present invention.

FIG. 2 is a plan view of a building having the drainage piping structure of FIG.

FIG. 3 is a perspective view showing an embodiment of a saddle joint of the present invention.

FIG. 4 is a perspective view of the saddle joint of FIG. 3 viewed from the back surface side.

5 is a cross-sectional view of the saddle joint of FIG.

[Explanation of symbols]

1 Drainage pipe 11 through holes 2 saddle fittings 21 Saddle body 22 Tubular bifurcation 23 Projection 24 Water stop material 3 branches

Claims (5)

[Claims] 1. A drainage port of a facility device installed in a building, in which a saddle joint is attached to an outer peripheral surface of a drainage main pipe which is previously piped under a floor of a building so as to cover a peripheral portion of a through hole of a pipe wall. A drainage pipe structure in which one end of the branch pipe is connected to the other end of the branch pipe is connected to the main drainage pipe through the saddle joint. 2. A plate-shaped saddle body having a substantially semi-circular cross section which is attached to the outer peripheral surface of the main drainage pipe so as to cover the peripheral portion of the through-hole of the pipe wall, and a protrusion on the surface of the saddle body so as to communicate with the through-hole. In a saddle joint, which is provided and has a tubular branch portion to which a branch pipe that joins the main drainage pipe is connected, the saddle body is formed so that its cross-sectional shape has an arc angle exceeding 180 degrees. Saddle fittings. 3. The back side of the saddle body of the tubular branch portion,
The saddle joint according to claim 2, wherein the saddle joint has a protrusion that can be inserted into a through hole of the drainage main pipe. 4. The saddle joint according to claim 3, wherein a ring-shaped water stop material is provided on an outer peripheral portion of the protruding portion on the rear surface side of the saddle body. 5. The drainage pipe structure according to claim 1, wherein the drainage pipe structure is connected via the saddle joint according to any one of claims 2 to 4.