JP2006329285A - Pipe joint - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pipe joint for allowing easy work for connection between a drain main pipe and a drain pipe through a floor. <P>SOLUTION: The pipe joint 11 is provided for connecting the underfloor drain main pipe 12 arranged on a foundation 52 vertically rising therefrom to the drain pipe 13 for water facilities 53 installed on the floor. It comprises a drain main pipe mounted member 14 formed of a hard material and mounted at the upper end of the drain main pipe 12, and a drain pipe connection member 15 formed of an elastic material for holding the drain pipe 13 at its lower end. The drain main pipe mounted member 14 consists of a small diameter cylinder portion 14a mounted at the upper end of the drain main pipe 12 and a large diameter cylinder portion 14c continuously provided at the upper part of the small diameter cylinder portion 14a via an enlarged cylinder portion 14b. The drain pipe connection member 15 consists of a mounted cylinder 15a mounted on the large diameter cylinder portion 14c, a holding cylinder 15b into which the lower end of the drain pipe 13 is inserted, and an annular elastic expansion portion 15c vertically expandable under the floor for connecting the holding cylinder 15b to the mounted cylinder 15a. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a pipe joint, and more particularly, to a pipe joint for connecting a drain main pipe disposed under a floor and a drain pipe of a water facility installed on the floor.

In general, the connection between the drainage main pipe under the floor installed on the foundation and the drainage pipe of the plumbing equipment installed in the building is the drainage of the plumbing equipment such as a wash basin installed on the floor after the building floor is formed. This is performed by connecting a pipe and a drain main pipe previously disposed below the floor (see, for example, Patent Document 1).
JP-A-11-201322

  However, when connecting the drainage main pipe and the drainage pipe under the floor, there is a problem that it is difficult to secure a work space, which requires a lot of labor and labor.

  Then, this invention aims at providing the pipe joint which can perform the connection operation | work of a drain main pipe and a drain pipe easily from a floor.

  In order to achieve the above object, the present invention provides a pipe joint that connects a drainage main pipe under the floor arranged vertically on a foundation and a drainage pipe of a watering facility installed on the floor, wherein the pipe joint is A drainage main pipe mounting member made of a hard material attached to the upper end portion of the drainage main pipe, and a drainage pipe connection member made of an elastic material holding the lower end portion of the drainage pipe, A small-diameter cylindrical portion attached to the upper end portion of the drainage main pipe, and a large-diameter cylindrical portion connected to the upper portion of the small-diameter cylindrical portion via an expanded cylindrical portion, and the drainage pipe connecting member includes the large-diameter cylindrical portion. A mounting cylinder attached to the diameter cylinder part, a holding cylinder into which the lower end of the drain pipe is inserted, and an annular elastic expansion / contraction part that connects the holding cylinder and the mounting cylinder and can be expanded and contracted in the vertical direction below the floor. It is characterized by having.

  The elastic expansion and contraction portion includes a trumpet-shaped enlarged diameter portion formed at a tip of a holding cylinder side elastic portion provided continuously to the holding cylinder, and a mounting cylinder side elastic portion provided continuously to the mounting cylinder. It is formed by connecting a trumpet-shaped enlarged diameter portion formed at the tip, and when the elastic expansion and contraction portion is shortened, the holding cylinder side elastic portion elastically deforms along the inner peripheral surface of the mounting cylinder side elastic portion. The holding cylinder side elastic part may be accommodated inside the mounting cylinder side elastic part, and the holding cylinder may be accommodated inside the elastically deformed holding cylinder side elastic part.

  In the pipe joint of the present invention, the elastic expansion / contraction part of the pipe joint previously attached to the upper end of the drain main pipe is extended to place the holding cylinder on the floor, and the lower end of the drain pipe is inserted into the holding cylinder. The drainage main pipe and the drainage pipe can be connected under the floor via a pipe joint only by pushing the pipe toward the drainage main pipe mounting member while shortening the elastic expansion / contraction part. In addition, a large-diameter cylindrical portion is provided on the upper portion of the drainage main pipe mounting member via an expanded cylindrical portion, and a drainage pipe connecting member mounting cylinder to be mounted on the large-diameter cylindrical portion and a lower end portion of the drainage pipe are inserted. Are connected to each other through an annular elastic expansion / contraction part, so that even if the drain main pipe and the drain pipe axis are displaced, the elastic expansion / contraction part can be elastically deformed to absorb the deviation of the axis, No excessive force is applied to the drain main pipe or drain pipe, and the drainage performance is not impaired.

  Further, the elastic expansion / contraction portion is formed by connecting a trumpet-shaped enlarged diameter portion formed at the distal end portion of the holding cylinder-side elastic portion and a trumpet-shaped enlarged diameter portion formed at the distal end portion of the mounting cylinder-side elastic portion. At the time of shortening, the inner peripheral surface of the holding cylinder side elastic part is elastically deformed along the inner peripheral surface of the mounting cylinder side elastic part, and the holding cylinder side elastic part is Since the holding cylinder is housed inside the elastic part of the holding cylinder that is elastically deformed, the lower end of the drain pipe is inserted into the holding cylinder, and then the drain pipe is simply pushed under the floor. Therefore, the elastic stretchable part can be easily shortened, and the drain main pipe and drain pipe can be easily connected. Moreover, the shift | offset | difference of the axis line of a drain main pipe and a drain pipe can be absorbed by the elastic deformation of an enlarged diameter part.

  Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. 1 is a cross-sectional front view of a pipe joint showing an embodiment of the present invention, FIG. 2 is a plan view, FIG. 3 is an explanatory view showing a state where the pipe joint is mounted on the drain main pipe, and FIG. FIG. 5 is an explanatory view of a state where the drainage pipe is connected to the holding cylinder, FIG. 5 is an explanatory view of a state where the drainage main pipe and the drainage pipe are connected via a pipe joint, and FIG. 6 is a drainage main pipe and a drainage pipe connected via the pipe joint. It is the schematic which shows the state which was installed in the building.

  The pipe joint 11 shown in the present embodiment connects the drain main pipe 12 disposed on the foundation 52 of the building 51 and the drain pipe 13 of the water supply facility 53 disposed on the floor of the building 51 under the floor. The drain main pipe 12 is attached in advance to the upper end portion of the drain main pipe 12 at the time of construction. The drainage main pipe 12 is disposed on the foundation 52 in the horizontal direction, and the tip is vertically raised from the foundation 52 to the building 51 side. The drain pipe 13 has an upper end connected to the water facility 53 and a lower end connected to the pipe joint 11 on the floor, and is inserted below the floor from a drain pipe insertion hole 54 a provided in the floor 54.

  The pipe joint 11 includes a drain main pipe mounting member 14 that is connected to the upper end of the drain main pipe 12 and a drain pipe connecting member 15 that connects the lower end of the drain pipe 13. The drain main pipe mounting member 14 is made of a hard resin, for example, a hard synthetic resin such as vinyl chloride, and has a small-diameter cylindrical portion 14a including a receiving port into which an upper end portion of the drain main pipe 12 is inserted, and the small-diameter cylindrical portion 14a. Is integrally provided with a large-diameter cylindrical portion 14c that is continuously provided via an expanded cylindrical portion 14b.

  The drain pipe connecting member 15 is formed of an elastic soft resin, such as synthetic rubber, and has a mounting cylinder 15 a having an inner diameter slightly larger than the outer diameter of the large diameter cylinder portion 14 c, and an outside of the drain pipe 13. A holding cylinder 15b having an inner diameter corresponding to the diameter, an attachment cylinder 15a, and a holding cylinder 15b are connected, and an annular elastic expansion / contraction part 15c that can expand and contract in the vertical direction below the floor is provided. A band mounting portion for mounting a fastening band 16 is provided on the outer periphery of the mounting cylinder 15a.

  The holding cylinder 15b is formed coaxially with the small diameter cylinder portion 14a, has an inner diameter slightly larger than the outer diameter of the drain pipe 13, and has a reinforcing annular rib 15d on the outer periphery.

  The elastic expansion / contraction part 15c is continuous with the holding cylinder 15b and is continuously connected to the holding cylinder side elastic part 15f having a diameter-enlarged part 15e widened upward in a trumpet shape, and the mounting cylinder 15a, and has a trumpet downward. It is formed by connecting the attachment cylinder side elastic part 15h provided with the enlarged diameter part 15g expanded in a shape with the end faces of both the enlarged diameter parts 15e and 15g attached to each other. The elastic expansion / contraction part 15c is formed in such a length that the holding cylinder 15b can protrude on the floor when the pipe joint 11 is attached to the drain main pipe 12 and then extended, and when it is contracted, the holding cylinder side elastic part 15f Is elastically deformed along the inner peripheral surface of the mounting cylinder side elastic portion 15h, the holding cylinder side elastic portion 15f is accommodated inside the mounting cylinder side elastic portion 15h, and the elastically deformed holding cylinder side elastic portion 15f The holding cylinder 15b is accommodated inside.

  Then, the large-diameter cylindrical portion 14c of the drainage main pipe mounting member 14 is inserted into the mounting cylinder 15a of the drainage pipe connecting member 15, and the outer periphery of the mounting cylinder 15a is tightened with the bands 16 and 16, thereby the drain main pipe mounting member 14 and the drainage. The pipe connection member 15 is integrated to form the pipe joint 11, and the drain pipe connection member 15 is mounted in the shortened state. The pipe joint 11 is attached to the upper end portion of the drainage main pipe 12 by inserting the upper end portion of the drainage main pipe 12 raised from the foundation 52 into a predetermined position into the small diameter cylindrical portion 14a and fixing with an adhesive or the like.

  In the floor 54, a drain pipe insertion hole 54a is formed at an upper position of the pipe joint 11. After the construction of the floor 54 is completed, a watering facility 53 such as a wash basin or a system kitchen is carried in. When connecting the drain pipe 13 of the water facility 53 to the pipe joint 11, the operator inserts his hand under the floor through the drain pipe insertion hole 54 a of the floor 54, grasps the holding cylinder 15 b and holds the holding cylinder 15 b on the floor. Pull up on. At this time, in the elastic expansion / contraction part 15c, the holding cylinder side elastic part 15f and the mounting cylinder side elastic part 15h are elastically deformed as the holding cylinder 15b rises, and the holding cylinder side elastic part 15f is an upper part of the mounting cylinder side elastic part 15h. The holding cylinder 15b rises above the holding cylinder side elastic portion 15f and protrudes on the floor. The lower end of the drain pipe 13 is inserted into the holding cylinder 15b protruding on the floor, and the drain pipe 13 is fixed by tightening the outer periphery of the holding cylinder 15b with the band 17. Next, by pushing the drain pipe 13 through the drain pipe insertion hole 54a to the drain main pipe mounting member 14 side under the floor, the holding cylinder side elastic part 15f and the mounting cylinder side elastic part 15h are elastically deformed, and the holding cylinder side elastic part 15f is The holding cylinder is restored to the initial shape along the inner peripheral surface of the mounting cylinder side elastic part 15h, the holding cylinder side elastic part 15f is accommodated inside the mounting cylinder side elastic part 15h, and the holding cylinder 15b is elastically deformed. The drainage pipe 13 and the drainage main pipe 12 are connected via the pipe joint 11 and are accommodated inside the side elastic portion 15f.

  By using such a pipe joint 11, the connection work between the drain main pipe 12 and the drain pipe 13 is performed by inserting the lower end portion of the drain pipe 13 into the holding cylinder 15 b that is extended on the floor by extending the elastic expansion / contraction part 15 c. It is only necessary to push the drain pipe 13 through the drain pipe insertion hole 54a from the floor to the drain main pipe mounting member 14 side below the floor, and the work can be easily performed from the floor. Even if the rising position of the drainage main pipe 12 and the underfloor insertion position of the drainage pipe 13 are deviated from the set position, the central axis of the drainage main pipe 12 and the central axis of the drainage pipe 13 may not coincide with each other. Since the holding cylinder 15b is appropriately moved or tilted by the elastic deformation of the elastic expansion / contraction part 15c of the joint 11, the drain pipe 13 can be reliably connected to the pipe joint 11, and the drain main pipe 12 and the drain pipe 13 can be connected. No great stress is applied to the surface. Further, by providing the annular rib 15d on the outer periphery of the holding cylinder 15b, the holding cylinder 15b can be reinforced, and when the drain pipe 13 is inserted into the holding cylinder 15b, the holding cylinder 15b is supported by the annular rib 15d. The drain pipe 13 can be inserted smoothly.

  In addition, the elastic expansion-contraction part of this invention is not restricted to the above-mentioned shape, It can also form in a bellows shape.

It is a section front view of a pipe joint showing an example of the present invention. It is also a plan view. It is explanatory drawing of the state which similarly attached the pipe joint to the drain main pipe. It is explanatory drawing of the state which similarly extends an elastic expansion-contraction part and connects a drain pipe to a holding cylinder. It is explanatory drawing of the state which connected the drain main pipe and the drain pipe via the pipe joint similarly. It is the schematic which shows the state which installed the drain main pipe and the drain pipe similarly connected via the pipe joint in the building.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 11 ... Pipe joint, 12 ... Drain main pipe, 13 ... Drain pipe, 14 ... Drain main pipe mounting member, 14a ... Small diameter cylinder part, 14b ... Expanded cylinder part, 14c ... Large diameter cylinder part, 15 ... Drain pipe connection member, 15a ... mounting cylinder, 15b ... holding cylinder, 15c ... elastic expansion and contraction part, 15d ... annular rib, 15e, 15g ... diameter expansion part, 15f ... holding cylinder side elastic part, 15h ... mounting cylinder side elastic part, 16, 17 ... band, 51 ... Building, 52 ... Foundation, 53 ... Watering equipment, 54 ... Floor, 54a ... Drain pipe insertion hole

Claims (2)

In a pipe joint that connects a drainage main pipe under the floor installed vertically on the foundation and a drainage pipe of a watering facility installed on the floor, the pipe joint is attached to the upper end of the drainage main pipe A drain main pipe mounting member made of a hard material and a drain pipe connecting member made of an elastic material holding the lower end of the drain pipe, and the drain main pipe mounting member is a small-diameter cylinder mounted on the upper end of the drain main pipe And a large-diameter cylindrical portion connected to the upper portion of the small-diameter cylindrical portion via an expanded cylindrical portion, and the drain pipe connecting member is mounted on the large-diameter cylindrical portion, A pipe joint comprising: a holding cylinder into which a lower end portion of the drain pipe is inserted; and an annular elastic expansion / contraction part that connects the holding cylinder and the mounting cylinder and can expand and contract in the vertical direction below the floor. The elastic expansion and contraction part is formed at a tip of a holding cylinder side elastic part continuously provided on the holding cylinder and a trumpet-shaped enlarged diameter part formed at a tip of the holding cylinder side elastic part. It is formed by connecting the trumpet-shaped enlarged diameter part formed, and when the elastic expansion and contraction part is shortened, the holding cylinder side elastic part elastically deforms along the inner peripheral surface of the mounting cylinder side elastic part, 2. The tube according to claim 1, wherein the holding cylinder side elastic part is accommodated inside the mounting cylinder side elastic part, and the holding cylinder is accommodated inside the elastically deformed holding cylinder side elastic part. Fittings.

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