JP2011038397A - Drain pipe piping structure of building - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a drain pipe for draining waste water in a building outdoors, by simple and easy work. <P>SOLUTION: The drain pipe 12 is inserted into a sheath pipe 15 embedded in a building underfloor base concrete layer 13, but an outside near part of the drain pipe 12 is formed of a flexible pipe 12A in the sheath pipe 15, and an inside near part is formed of a straight pipe 12B easy in adjusting the length by cutting. The outdoor side end of the flexible pipe 12A is positioned and fixed by a positioning nut 24 threadably attached via an outdoor side socket 16. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a piping structure for a drain pipe of a building and a construction method for the piping structure.

  In the drain pipe structure of the building, as shown in FIGS. 7 and 8, drain branch pipes 7, 8, 9, 10 from the drain facilities 3, 4, 5, 6 of the building 2 in the site 1 Is collected in a drainage basin 11 installed under the floor of the building 2 and a drainage pipe 12 is sent out from the basin 11 and the distribution pipe 12 is passed through the 13 layers of the foundation concrete under the floor of the building 1 Connect to the public square 14 outside.

  Conventionally, the portion of the water distribution pipe 12 that passes through the underfloor foundation concrete 13 layer is a flexible pipe 12A, and a configuration is provided in which the flexible pipe 12A is inserted into the sheath pipe 15 to protect the flexible pipe 12A. (For example, see Patent Citations 1 and 2).

Japanese Patent No. 3592658 Japanese Patent No. 3595761

  In the above conventional configuration, since the flexible tube 12A must be inserted over the entire length of the sheath tube 15, when the seal ring is attached to the outdoor side of the flexible tube 12A and inserted from the indoor side, The flexible tube 12A may bend or bend, the seal ring may be easily removed when the flexible tube 12A is inserted from the outdoor side, and the flexible tube 12A is cut to a predetermined length. Is usually cut along the concave groove of the flexible tube 12A. For this purpose, a special instrument such as a cutting tool with a guide is required, which takes time for cutting work, and the indoor side end of the flexible tube 12A is a sheath. Since it is out of the pipe 15 and unstable, it is difficult to connect the indoor drain pipe 12 to the inner end of the sheath pipe 15 via the socket 17, and the connection with the PVC drain pipe 12 is difficult. Is not a regular adhesive bond, but a special Packet 17 there has been a problem such as that required separately.

  The present invention solves the above-described conventional problems, and is a drain pipe structure that discharges drainage from drainage facilities inside the building 2 through the underfloor foundation concrete layer 13 to the outside of the building. The portion that penetrates the foundation concrete layer 13 is inserted into the sheath tube 15, and the sheath tube 15 is bent upward from the outer opening end 15A of the building 2 so that the inner opening end 15B of the building 2 is on the upper surface 13A of the foundation concrete 13 An open portion is set, and an outer portion of the drain pipe 12 is constituted by a flexible pipe 12A in the sheath pipe 15, and an inner side socket 17 is provided at an inner end of the flexible pipe 12A. A straight pipe 12B is connected to the straight pipe 12B, and an indoor drain pipe 12 is connected to the straight pipe 12B via a joint, and an outdoor drainage is connected to the outer end of the flexible pipe 12A via an outdoor socket 16. Tube 12 is connected There is provided a water discharge pipe 12 piping structure of a building are.

[Action]
Since the drain pipe 12 has a flexible pipe 12 </ b> A in the sheath pipe 15, the drain pipe 12 can cope with the bending of the sheath pipe 15. Since the straight tube 12B is connected to the inner end of the flexible tube 12A in the sheath tube 15 via the indoor side socket 17, the length of the flexible tube 12A is shortened accordingly. When the portion of the flexible tube 12A is inserted into the sheath tube 15, the flexible tube 12A is difficult to bend or bend, so that the insertion operation is easy and easy. The straight pipe 12B can be easily cut and adjusted in length.

〔effect〕
The present invention facilitates the piping work of a drain pipe for discharging drainage from inside a building to the outside of the building.

FIGS. 1-6 is explanatory drawing which shows one Example of this invention.
Explanatory sectional drawing of a drain pipe piping structure. FIG. 5 is a detailed cross-sectional view of a sheath indoor side end portion. The perspective view of an indoor side socket. The detailed explanatory sectional view of the sheath pipe outdoor side end portion. The perspective view of an outdoor side socket. The perspective view of an outdoor side fixing nut. The piping diagram which shows the drainage path of the conventional building. Sectional drawing explaining with the conventional drain pipe piping structure.

  The present invention will be described with reference to an embodiment shown in FIG. 1 to FIG. 6. A drain pipe 12 fed from a water collecting basin 11 in a building 2 passes through a sheath pipe 15 embedded in a foundation concrete 13 under the building floor. Connect to the drain pipe 12 outside the building at a level lower than the surface GL.

  The sheath pipe 15 is bent upward from the outer opening end 15A of the building 2 so that the inner opening end 15B of the building 2 protrudes from the upper surface 13A of the foundation concrete 13. A horizontal portion may be provided on the outer opening end 15 </ b> A side of the sheath 15. Further, the inner opening end 15B may be flush with the upper surface 13A of the foundation concrete 13.

  In the sheath pipe 15, the outer portion of the drain pipe 12 is constituted by a flexible pipe 12A, and the inner end of the flexible pipe 12A is directly connected via an indoor socket 17 as shown in FIG. A tube 12B is connected. 2 and 3, a threaded portion 17A is formed on the outer periphery of the flexible tube side end of the indoor socket 17, and a rib 17B is formed on the outer periphery of the straight tube side end. A stopper 17C protrudes from the portion, and the flexible tube 12A and the flexible tube side of the indoor socket 17 are made of a resin stopper ring 20 having a flange 19A of a fixing nut 19 attached to the flexible tube 12A. Further, it is fixed by being screwed and tightened to the threaded portion 17A of the indoor side socket 17. Further, a seal ring 21 is interposed between the straight pipe 12B and the sheath pipe 15 to ensure water tightness inside it.

  As shown in FIG. 4, the outer end of the flexible tube 12 </ b> A is connected to the outdoor-side drain pipe 12 via the outdoor-side socket 16. As shown in FIGS. 4 and 5, threaded portions 16A and 16B are formed on the outer periphery of both ends of the outdoor side socket 16, and a stopper 16C is projected from the center portion of the inner periphery. 12A and the flexible tube side of the outdoor socket 16 are hooked on the resin stopper ring 23 attached to the flexible tube 12A with the flange 22A of the fixing nut 22 and further screwed onto the threaded portion 16B of the outdoor socket 16. The positioning nut 24 is screwed and fastened to the threaded portion 16A of the outdoor side end portion of the outdoor side socket 16 that has come out of the building 2. The outer end of the flexible tube 12A is opened to the sheath tube 15 by pressing the flange 24A against the bottom concrete floor 13 of the building floor or the end surface of the sheath tube 15 by the positioning nut 24 through the outdoor socket 16. It is fixed to the position. As shown in FIG. 6, the positioning nut 24 is provided with a flange 24A on the inner end and a rib 24B on the outer periphery, and a thread groove 24C is intermittently formed on the inner periphery. The rib 24B is used as a clue for screwing and tightening the positioning nut 24. The flexible tube 12A and the outdoor and indoor sockets 16 and 17 are sealed with seal rings 25 and 26.

  To construct the piping structure, for example, a straight pipe 12B adjusted to a predetermined length by cutting with a simple tool such as a saw through the indoor socket 17 is connected to one end of the flexible pipe 12A. The seal ring 21 is attached to the outer periphery of the tube 12B, and the outdoor side socket 16 is attached to the other end (step 2). Since the straight pipe 12B is not unstable like the flexible pipe 12A, the cutting operation is easy. Further, it can be easily bonded to the drain pipe 12 via the joint 27. A set in which such a straight pipe 12B-indoor side socket 17-flexible pipe 12A-outdoor side socket 16 is connected is inserted into the sheath pipe 15 from the indoor side. At this time, the outdoor side socket 16 is placed at the top. Since the flexible tube 12A is shortened by connecting the straight tube 12B, it is difficult to bend or bend when inserted into the sheath tube 15, and therefore the insertion operation can be easily performed. Since the seal ring 21 is mounted on the outer periphery of the straight pipe 12B in advance, the seal ring 21 seals between the straight pipe 12B and the sheath pipe 15 at the same time as the set is inserted into the sheath pipe 15. (Step 3). The straight pipe 12B is connected to the indoor drain pipe 12 via a joint 27. The straight pipe 12B is fixed in the sheath pipe 15 by the seal ring 21, so that the indoor drain pipe 12 is connected. Work becomes easy.

  Thereafter, the positioning nut 24 is screwed and tightened to the screw portion 16A provided at the outdoor end of the outdoor socket 16. The outdoor end side of the flexible tube 12A is positioned and fixed by the positioning nut 24 via the outdoor side socket 16, and the angle of the outer end sheath of the flexible tube 12A to the sheath 15 opening can be determined. The operation | work which connects the outdoor side drain pipe 12 to this outdoor side socket 16 can be done easily.

  As a result, since the positioning nut 24 is fixed to the seal ring 21 at two points, the flexible tube 12A and the straight tube 12B are stabilized in the sheath tube 15.

  In the present invention, the seal structure between the sheath tube 15 and the drain tube 12 may be provided between the positioning nut 24 and the sheath tube 15 or the floor foundation concrete layer 13. Further, it may be provided between the flexible tube 12 </ b> A or the sockets 16, 17 and the sheath tube 15.

  As the seal ring 21, rubber packing or O-ring is preferable. If this type of seal ring 21 is attached to the straight pipe 12B, it is not necessary to separately perform an attaching operation of the sealing material, and it is preferable in that a filling operation of the sealing agent is unnecessary.

  In the case of the present embodiment, since the seal ring 21 is on the indoor side of the sheath tube 15, the press-fitting distance when the flexible tube 12A and the straight tube 12B are inserted into the sheath tube 15 is short, and the pressure input is small. This is preferable. Further, the straight pipe 12B and the sheath pipe 15 are sealed, and the gap between the sheath pipe 15 and the drain pipe 12 is not a bent portion where the gap is uneven, but the straight portion where the gap is likely to be uniform. Since sealing is performed, sealing performance can be improved.

  In the present invention, drainage pipes in buildings can be used in an industrial manner because they can be done with simple and easy work.

2 Building 12 Drain pipe 12A Flexible pipe 12B Straight pipe 13 Underfloor foundation concrete layer 14 Public masu 15 Saya pipe
15A outer opening end 15B inner opening end 16, 17 socket
21 Seal ring 24 Positioning nut 27 Joint

Claims (1)

  A drainage pipe structure that drains drainage from the drainage system inside the building through the foundation concrete layer under the building floor, and the portion of the drainage pipe that penetrates the foundation concrete layer is inserted into the sheath pipe The sheath pipe is bent upward from the outside opening end of the building, and the inside opening end of the building is opened to the upper surface of the foundation concrete. The outside portion of the drain pipe is a flexible pipe in the sheath pipe. A straight pipe is connected to the inner end of the flexible pipe via an indoor socket, and an indoor drain pipe is connected to the straight pipe via a joint. A drainage pipe piping structure for a building, characterized in that an outdoor drainage pipe is connected to the outer end of the flexible pipe via an outdoor socket.