JP2009138763A - Sliding joint and catch basin - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To make a sliding joint compact. <P>SOLUTION: This sliding joint 11 has a pipe coupling body 14 forming an opening 21a on one end side and having at least a cylindrical straight pipe part 21, and a sliding member 15 having a socket 26 connected with a drain pipe 12 and a cylindrical part 27 continuing with the socket 26 and insertably formed in the pipe coupling body 14. An inner diameter L of the straight pipe part 21 of the pipe coupling body 14 is set to an outer diameter or more of the socket 26 of the sliding member 15. The length X of the straight pipe part 21 of the pipe coupling body 14 is set to the length or more of adding the length of subtracting the thickness E of a flange 28 from the length A of the socket 26 of the sliding member 15 and the length C of a connection margin of the sliding member 15 and the pipe coupling body 14. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a slide joint and a drainage basin.

  Usually, a drainage basin is formed around the foundation of a building such as a residential land to join together drainage discharged from a house. The drainage basin is connected via a drainage pipe for connection (hereinafter referred to as “drainage pipe for connection”) to a drainage pipe composed of drainage pipes and pipe joints arranged from the indoor to the outside. Normally, when connecting a drainage pipe and a drainage pipe, first arrange the drainage pipe and the drainage pipe in their respective positions, then connect one end of the drainage pipe for connection to the drainage pipe, Connect the other end of the drainage pipe to the drain.

  By the way, when connecting one end of the drainage pipe for connection and the drainage pipe line, an overlapping portion, that is, a connecting margin is required between them. Further, when connecting the other end of the drainage pipe for connection to the drainage basin, a connection margin is required. Therefore, the length of the connecting drain pipe is longer than the distance between the drain pipe and the drain by the length of the connecting margin. Therefore, when connecting the drainage pipe and the drainage via the connection drainage pipe, it is necessary to fit the drainage pipe for connection longer than the gap between the drainage pipe and the drainage. It becomes.

  However, if some device is not used, the connection drain pipe must be forcedly inserted, and thus the above operation becomes difficult. In recent years, particularly in urban areas, outdoor piping spaces tend to be smaller from the viewpoint of effective use of land. For this reason, it is more difficult to attach the connecting drain pipe. Therefore, a slide joint has been used in such a case (for example, see Patent Document 1).

The slide joint disclosed in Patent Literature 1 includes an outer tube and an inner tube that is slidably inserted into the outer tube. The outer tube has a large diameter portion and a small diameter portion, and one end side of the inner tube is inserted into the large diameter portion. A receiving port for connecting a drain pipe for connection is formed on the other end side of the inner pipe. The large diameter portion of the outer tube is formed long in the axial direction. For this reason, it is necessary to connect a predetermined length between the outer tube and the inner tube, but once the inner tube is inserted into the outer tube longer than the connecting space, a part of the inner tube is then removed from the outer tube. It can be pulled out. Thereby, a slide joint becomes telescopic. By using such a slide joint, the drainage pipe for connection can be easily installed.
Japanese Patent Laid-Open No. 10-196863

  By the way, in such a slide joint, the inner tube must be able to be inserted into the outer tube by a length obtained by adding at least the length of approximately one receiving port and the length of the connecting margin. This is because the piping work cannot be facilitated unless the slide joint can expand and contract by at least the length of approximately one of the receiving ports.

  However, in the slide joint described in Patent Document 1, a receiving port is formed in the inner tube, and the outer diameter of the receiving port is larger than the outer diameter of other portions. Therefore, the receiving port of the inner tube cannot be inserted into the outer tube, and when the slide joint is most contracted, the entire receiving port comes out from the outer tube. Therefore, the length of the portion other than the receiving port of the inner tube must be at least the length obtained by adding at least the length of about one receiving port and the length of the connecting margin. Therefore, the slide joint has a problem that the entire length of the inner pipe is increased and the slide joint is enlarged. As a result, for example, when the interval between the drainage pipe and the drainage basin is narrow, there is a problem that it is difficult to fit the drainage pipe for connection even if a slide joint is used.

  This invention is made | formed in view of this point, The place made into the objective is to aim at size reduction of a slide joint.

  The slide joint according to the present invention has a pipe joint main body having at least a cylindrical straight pipe portion having an opening formed on one end side, a receiving port to which a drain pipe is connected, and a cylindrical portion continuous to the receiving port, A slide member slidably inserted into the pipe joint main body from the tube side, and an inner diameter of the straight pipe portion of the pipe joint main body is equal to or larger than an outer diameter of the receiving port of the slide member, The length of the straight pipe portion of the pipe joint main body is equal to or longer than a length obtained by adding at least a part of the receiving port of the slide member and a length of a connection between the slide member and the pipe joint main body. It is what is.

  Here, “the length of the connecting margin” means the axial direction of a connecting portion (portion overlapping with the fitting main body) that is at least required when connecting the sliding member to the fitting main body among the sliding members. Say the length of. The connecting margin is usually defined by the pipe material, the nominal diameter, and the joining method. The “outer diameter of the receiving port” refers to the outer diameter of the portion excluding the flange when the receiving port has a flange.

  In the slide joint, the inner diameter of the straight pipe portion of the pipe joint body is equal to or larger than the outer diameter of the receiving port of the slide member. Therefore, not only the cylinder part of the slide member but also a part or all of the receiving port can be inserted into the pipe joint body. Thereby, the full length of the slide joint when the slide joint is most contracted can be shortened. Therefore, the slide joint can be made compact. Therefore, according to the above slide joint, for example, when connecting each drain pipe having a fixed position and a drain pipe or connecting drain pipes each having a fixed position, each interval is narrow. The piping work can be easily performed.

  It is preferable that the length of the cylindrical portion of the slide member is equal to or longer than a length of a connecting margin between the slide member and the pipe joint main body.

  In the above slide joint, not only the cylindrical part but also at least a part of the receiving port can be inserted into the pipe joint body. Therefore, by securing the length of the cylindrical portion more than the length of the connecting margin, that is, by securing the total length of the slide member by at least a part of the length of the receiving opening and the length of the connecting margin, The slide joint can be expanded and contracted by at least a part of the length of the receptacle.

  It is more preferable that the length of the cylindrical portion of the slide joint is substantially equal to the length of the connecting margin. Thereby, compared with the conventional slide joint which cannot insert a receptacle into a pipe joint main body, a slide joint can be shortened about one receptacle. Even in such a case, since the slide joint can be expanded and contracted by a length corresponding to approximately one of the receiving ports, the piping work can be easily performed. Furthermore, according to such a slide joint, when the slide joint is expanded and contracted most, only the receiving port of the slide member is in the state of being outside the pipe joint body, so that the overall length of the slide joint can be further shortened. it can.

  A stopper projecting outward in the radial direction is formed at the receiving port of the slide member, and the distance between the center of the receiving port and the outer end of the stopper is equal to the inner diameter of the straight pipe portion of the pipe joint body. It is preferably longer than 1/2.

  As a result, when the slide member is inserted into the pipe joint body, the stopper is brought into contact with the end portion of the straight pipe portion of the pipe joint body, thereby restricting the slide member from being inserted any further. . Therefore, it is possible to prevent the slide member from being buried in the pipe joint main body even though the outer diameter of the receiving port of the slide member is equal to or smaller than the inner diameter of the straight pipe portion of the pipe joint main body. The stopper is formed outside the receiving port, that is, outside the space through which drainage flows. Therefore, there is no possibility that the flow of drainage is hindered by the stopper.

  It is preferable that the outer diameter of the receiving port of the slide member is equal to the outer diameter of the cylindrical portion, and the outer wall surface of the boundary of the sliding member and the cylindrical portion is formed without a step.

  As a result, not only one of the receiving port and the cylindrical portion but also the outer wall surface of both (in other words, the entire sliding member) can be made to follow the inner wall surface of the pipe joint body. It becomes possible to slide smoothly.

  The pipe joint main body further has a curved pipe part continuous to the other end side of the straight pipe part, and the curved pipe part of the pipe joint main body is continuous with an inner wall surface of the straight pipe part, An inner wall surface protruding from the one end side of the straight pipe portion along the axial direction of the straight pipe portion to the inside of the opening, and extending from the straight pipe portion of the pipe joint body toward the bent pipe portion. When the slide member is inserted from the tube portion side, the tube portion of the slide member is preferably in contact with the inner wall surface portion of the bent tube portion of the pipe joint main body, and further entry is restricted. .

  In the slide joint, the pipe joint body is a so-called bent pipe having a bent pipe portion, and the bent pipe portion has an inner wall surface portion protruding to the inside of the opening when viewed from the opening side of the straight pipe portion. . Therefore, when the slide member is inserted into the pipe joint main body, excessive insertion of the slide member is restricted by the cylindrical portion of the slide member coming into contact with the inner wall surface portion. As described above, according to the slide joint, a part of the inner wall surface (inner wall surface portion) of the curved pipe portion of the pipe joint main body also serves as a stopper portion that regulates the slide member. Therefore, according to the slide joint, it is not necessary to provide a stepped portion for restricting the insertion of the slide member on the inner wall surface of the pipe joint main body, and it is possible to suppress catching of dust and the like due to the stepped portion.

  A first groove extending in the circumferential direction is formed on the outer wall surface of the cylindrical portion of the slide member, and a second groove extending in the circumferential direction is formed on the inner wall surface of the straight pipe portion of the pipe joint body. A substantially ring that is accommodated in the second groove, has an inner diameter smaller than an outer diameter of the first groove and an outer diameter larger than the outer diameter of the first groove, and is configured to be freely expandable. The first groove is slidable with respect to the stopper member when the slide member is inserted into the pipe joint body, and the slide member is pulled out from the pipe body. Sometimes it may be formed so as to be locked to the stopper member.

  In the above slide joint, after the slide member is inserted into the pipe joint body, when the slide member is pulled out from the pipe joint body to a position where the first groove and the second groove face each other, the slide joint is accommodated in the second groove. The ring and the first groove are engaged. Thereby, when extending | stretching a slide joint, the slide more than the predetermined amount of a slide member will be controlled. Therefore, according to the said slide joint, it can regulate so that a slide member may not be pulled out from a pipe joint main body more than predetermined length. In addition, when such a restriction structure is not provided, a large amount of connecting margin is set in advance so that a predetermined amount of connecting margin is ensured at a minimum even if the slide member is pulled out from the pipe joint body to a predetermined amount or more. There is a need to. However, according to the slide joint, since it has the restriction structure as described above, it is not necessary to secure a large length of the connecting margin between the slide member and the pipe joint body. Therefore, it is possible to avoid extra connection allowance and to make the slide joint compact.

  When the slide member is inserted into the inner wall surface of the straight pipe portion of the pipe joint body, a gap between the outer wall surface of the slide member and the inner wall surface of the straight pipe portion of the pipe joint body is closed. An annular seal member is preferably attached.

  According to the above slide joint, the gap between the pipe joint body and the slide member can be sealed only by inserting the slide member into the pipe joint body.

  A linear protrusion extending in the circumferential direction is formed on the outer wall surface of the cylindrical portion of the slide member, and when the slide member is inserted into the inner wall surface of the straight pipe portion of the pipe joint body, An annular seal member that closes a gap between the outer wall surface of the slide member and the inner wall surface of the straight pipe portion of the pipe joint body is attached, and the slide member is inserted into the pipe joint body to the annular seal member. It is preferable that an engaging portion is formed that is slidable with respect to the linear protrusion when inserted, and is engaged with the linear protrusion when the slide member is pulled out from the pipe joint body.

  According to the above slide joint, the gap between the pipe joint body and the slide member can be sealed only by inserting the slide member. Further, according to the above slide joint, when the slide member is pulled out, the engagement portion of the seal member and the linear protrusion engage with each other, so that the slide member is pulled out from the pipe joint body more than a predetermined length. It can be regulated not to be. For this reason, it is not necessary to set an excessively long connection margin between the slide member and the pipe joint body. Therefore, it is possible to avoid extra connection allowance and to make the slide joint compact.

  The slide member is preferably arranged on the upstream side of the pipe joint main body.

  According to the above slide joint, when the end surface (tip surface in the insertion direction) of the cylindrical portion of the slide member is a surface orthogonal to the axial direction, when the slide member is inserted into the pipe joint body, A step is generated in the pipe joint main body by the end of the tube portion. That is, since the inner diameter of the slide member is smaller than the inner diameter of the straight pipe portion of the pipe joint body, a step is generated due to the change in the inner diameter. However, by disposing the slide member on the upstream side of the pipe joint body, the drainage flows from the slide member having a small inner diameter toward the pipe joint body having a large inner diameter. For this reason, the step is not a step that rises toward the downstream side, but a step that falls toward the downstream side. Can be suppressed.

  The slide member preferably extends in a substantially vertical direction.

  As a result, the drainage flows through the slide member from the top to the bottom. Therefore, even if a step is generated in the slide joint as described above, the step does not become a step in the vertical direction at the pipe low. Therefore, it is possible to further suppress dust and the like in the waste water from being caught on the step.

  The drainage basin according to the present invention includes the slide joint, and a main body attached to or integrally formed with the pipe joint body of the slide joint.

  As a result, it is possible to obtain a drainage basin having the above-described effects.

  As described above, according to the present invention, the slide joint can be made compact.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. As will be described below, the slide joint according to the present embodiment constitutes a part of a drainage system for joining drainage from the house outdoors. However, the use location of the slide joint according to the present invention is not limited to the following drainage system.

<< Drainage system 1 >>
FIG. 1 is a diagram illustrating a configuration of a drainage system 1 according to the present embodiment. As described above, the drainage system 1 is for joining drainage from the house 100 outdoors. The drainage system 1 is a connection structure that connects a drainage pipe 2 that is disposed across the inside and outside of the house 100, a drainage pipe 3 that is disposed at a predetermined outdoor position, and a drainage pipe line 2 and a drainage pipe 3 10.

<< Configuration of Drainage Pipeline 2 >>
In the present embodiment, the drain pipe 2 is constituted by a through pipe 4 and a bent joint 5 that are disposed across the inside and outside of the house 100. A part of the through pipe 4 is embedded in the foundation of the house 100. At both ends of the bent joint 5, receiving ports 5a and 5b are formed. One receiving port 5a of the bent joint 5 is opened downward, and the other receiving port 5b is opened sideways. The other end 5b of the bent joint 5 is connected to the end of the through pipe 4 on the outdoor side. A drainage pipe 12 for connection of a connection structure 10 to be described later is connected to the other receiving port 5a of the bent joint 5.

《Drainage 3 configuration》
The drainage basin 3 is a main body 6, an inflow portion 7 for guiding drainage to a drainage flow path 50 formed in the main body 6, and a substantially cylindrical rising pipe 8 extending vertically from the main body 6. And a lid (not shown) attached to the upper portion of the riser 8. The inflow portion 7 is formed in a tubular shape and is provided so as to penetrate the inside and outside of the main body 6. A receiving port 7 a is formed in the outer portion of the inflow portion 7.

<< Configuration of Connection Structure 10 >>
The connection structure 10 includes an extendable slide joint 11 and a connection drain pipe 12. Moreover, in this embodiment, the connection structure 10 is provided with the short tube 13 for connecting the slide joint 11 and the inflow part 7 of the drainage 3.

<< Configuration of Slide Joint 11 >>
FIG. 2 is a side sectional view of the slide joint 11. As shown in FIG. 2, the slide joint 11 includes a pipe joint main body 14 and a slide member 15 formed so as to be insertable into the pipe joint main body 14.

-Slide member 15-
The slide member 15 includes a receiving port 26 to which the connecting drain pipe 12 is connected, and a substantially cylindrical tube portion 27 that is continuous with the receiving port 26 and is formed so as to be inserted into the pipe joint main body 14. At the boundary portion between the receiving port 26 and the cylindrical portion 27, a step 15c protruding inward in the radial direction is formed. As shown in FIG. 2, the connecting drain pipe 12 is inserted into the receiving port 26 so that the tip thereof contacts the step 15 c.

  A flange 28 that protrudes radially outward and extends in the circumferential direction is formed at the end (the upper end in FIG. 2) of the receiving port 26. The outer diameter of the flange 28 is larger than the inner diameter of the straight pipe portion 21 of the pipe joint body 14 described later.

  In the present embodiment, the outer diameters of the cylindrical portion 27 and the receiving port 26 are equal, and the outer wall surface 15a of the slide member 15 is formed without a step. The outer diameter of the receiving port 26 refers to the outer diameter of the portion of the receiving port 26 excluding the flange 28. Further, the cylindrical portion 27 is formed thicker than the receiving port 26. The inner wall surface 27 a of the cylindrical portion 27 is formed to be flush with the inner wall surface 12 a of the drain pipe 12 when the drain pipe 12 is connected to the receiving port 26. Furthermore, the inner wall surface 27a of the cylindrical portion 27 is formed by a slope that goes outward as it goes to the axial end (lower end in FIG. 2).

  The inner wall surface 27a of the cylindrical portion 27 is not flush with the inner wall surface 12a of the drainage pipe 12 when the drainage pipe 12 is connected to the receiving port 26, and is more radially outward than the inner wall surface 12a of the drainage pipe 12. You may form so that it may be located.

−Fitting body 14−
The pipe joint main body 14 includes a straight pipe part 21, a curved pipe part 22 continuous with the straight pipe part 21, and a receptacle that is continuous with the curved pipe part 22 and into which a tubular member (pipe, drainage outlet, etc.) can be inserted. 23.

  An opening 21 a into which the slide member 15 is inserted is formed on one end side of the straight pipe portion 21. The straight pipe portion 21 has an inner diameter L that is substantially equal to the outer diameter of the receiving port 26 of the slide member 15. As a result, the slide member 15 can be inserted into the straight pipe portion 21.

  The curved pipe portion 22 is formed so as to be continuous with the other end side (the side opposite to the opening 21a) of the straight pipe portion 21. The curved pipe part 22 is continuous with the inner wall surface 21b on the other end side of the straight pipe part 21, and protrudes inside the opening 21a when the axial direction of the straight pipe part 21 is viewed from one end side of the straight pipe part 21. It has an inner wall surface portion 22a. In the present embodiment, the curved pipe portion 22 is formed such that a drainage channel formed inside the pipe joint body 14 is bent by approximately 90 degrees by the inner wall surface portion 22a.

-Relationship between axial lengths of slide member 15 and pipe joint body 14-
When the length of the straight pipe portion 21 of the pipe joint body 14 is X, when the slide member 15 is inserted by the length X, one end of the slide member 15 is connected to the inner wall surface portion 22a (more precisely, the inner wall The upper end portion of the surface portion 22a), and further entry is restricted (see FIG. 3). In addition, it is preferable that the upper end portion of the inner wall surface portion 22a, that is, the portion of the inner wall surface portion 22a with which one end of the slide member 15 abuts is a position equal to or more than the half tube. Here, the position above the semi-tube is a position higher than the center position of the receiving port 23 opened to the side. In other words, when a portion extending in the lateral direction of the pipe joint main body 14 is considered as a pipe, it refers to a position higher than the center position of the pipe.

  The length X of the straight pipe portion 21 is equal to or longer than the sum of the length A of the receiving port 26 of the slide member 15 and the length C of the connecting margin between the slide member 15 and the pipe joint main body 14. In the present embodiment, the length X of the straight pipe portion 21 is substantially equal to the length obtained by subtracting the thickness E of the flange 28 from the length of the slide member 15 (the length A of the receiving port 26 + the length B of the cylindrical portion 27). It is set to be equal.

  Here, the length A of the receptacle 26 refers to the amount of insertion of the drain pipe 12 when the drain pipe 12 is inserted into the receptacle 26 of the slide member 15. The length A of the receptacle 26 is normally defined by the material and nominal diameter of the tube. Further, the length C of the connecting margin means the length of a connecting portion (a portion where they overlap each other) that is required at the minimum when the slide member 15 and the pipe joint main body 14 are bonded together. It is defined by the nominal diameter and connection method.

  In the present embodiment, the slide member 15 is formed so as to be insertable into the pipe joint main body 14 by (the length A of the receiving port 26) − (the thickness E of the flange 28) + (the length C of the connecting margin). . In the present embodiment, the straight pipe portion 21 has an inner diameter L substantially equal to the outer diameter of the receiving port 26 of the slide member 15, and a part of the receiving port 26 (that is, a portion excluding the flange 28) is also a straight pipe portion. 21 can be inserted. Therefore, the length B of the cylindrical portion 27 of the slide member 15 is equal to or longer than the length C of the connection.

  In FIG. 2, the length B of the cylindrical portion 27 is shown to be larger than the length C of the connecting margin, but the length B of the cylindrical portion 27 may be equal to the length C of the connecting margin. .

-Connection structure between the slide member 15 and the pipe joint body 14-
A concave portion 21 c extending in the circumferential direction is formed on the inner wall surface 21 b at one end of the straight pipe portion 21. An annular seal member 24 is fitted in the recess 21c. Thereby, when the slide member 15 is inserted into the pipe joint main body 14, the gap between the two can be sealed without using an adhesive or the like.

  Moreover, the recessed part 21d extended in the circumferential direction is formed in the other end side (lower side of FIG. 2) rather than the recessed part 21c of the inner wall face 21b of the straight pipe part 21. As shown in FIG. On the other hand, a concave portion 27 c extending in the circumferential direction is formed on the outer wall surface 27 b of the cylindrical portion of the slide member 15. A substantially C-shaped ring 29 is accommodated in the recess 21d. The ring 29 is formed so that, in a normal state, the inner diameter is smaller than the outer diameter of the concave portion 27c and the outer diameter is larger than the outer diameter of the concave portion 27c. Further, the ring 29 is partially provided with a notch (not shown) and is configured to be easily expanded in diameter. The concave portion 27c slides relative to the ring 29 in the concave portion 21d when the slide member 15 is inserted into the pipe joint main body 14, and is locked to the ring 29 when the slide member 15 is pulled out from the pipe joint main body 14. Is formed.

  Specifically, as illustrated in FIG. 4A, the recess 27 c includes a front end side end surface c <b> 1 and a rear end side end surface c <b> 2 in the insertion direction of the slide member 15. The end surface c1 on the front end side extends in a direction substantially orthogonal to the insertion direction, and the end surface c2 on the rear end side is formed in a taper shape.

  As a result, as shown in FIG. 4A, when the slide member 15 is inserted into the pipe joint body 14, the slide member 15 advances even if the ring 29 is once fitted into the recess 27c of the cylindrical portion 27. As a result, the ring 29 is pushed out of the recess 27c by the end surface c2 on the rear end side. Therefore, the ring 29 does not engage with the recess 27c.

  On the other hand, as shown in FIG. 4C, when the slide member 15 is pulled out from the inside of the pipe joint main body 14, once the ring 29 is fitted into the concave portion 27c of the cylindrical portion 27, the ring 29 is caught by the end surface c1 on the front end side. . As a result, the slide member 15 is regulated so as not to be pulled out from the inside of the pipe joint body 14.

<< Connection structure between slide joint 11 and drainage 3 >>
As shown in FIG. 1, the end portion of the short pipe 13 is inserted and bonded to the receiving port 23 of the pipe joint main body 14 and the receiving port 7 a of the inflow portion 7 of the drainage 3. In this way, the pipe joint body 14 is connected to the drainage drain 3 through the short pipe 13.

<< Connection structure between slide joint 11 and drain pipe 2 >>
One end of the drain pipe 12 is bonded to the receiving port 5 a of the bent joint 5 of the drain pipe 2. The receiving port 26 of the slide member 15 is connected to the other end of the drain pipe 12. In this way, the slide joint 11 is connected to the drainage pipe line 2 via the drainage pipe 12.

  As described above, the pipe joint main body 14 and the slide member 15 of the slide joint 11 are connected to the drain 3 and the drain pipe 2, respectively. Thus, in this embodiment, the pipe joint main body 14 is disposed downstream of the slide member 15. Moreover, the slide member 15 is arrange | positioned so that it may extend in an up-down direction.

  The above is the configuration of the drainage system 1. Next, a procedure for connecting the drainage pipe line 2 and the inflow part 7 of the drainage basin 3 using the connection structure 10 will be described. It is assumed that the through pipe 4 of the drain pipe 2 is embedded in the foundation of the house 100 and the position is fixed. In addition, the drainage basin 3 is also fixed at a predetermined position.

<< Connection procedure between drainage pipe 2 and drainage 3 inflow section 7 >>
First, the slide member 15 is inserted into the pipe joint main body 14 to assemble the slide joint 11. In the present embodiment, the inner diameter L of the straight pipe portion 21 of the pipe joint body 14 is substantially equal to the outer diameter of the cylindrical portion 27 and the receiving port 26 of the slide member 15. Therefore, not only the cylinder part 27 of the slide member 15 but also at least a part of the receiving port 26 can be smoothly inserted into the straight pipe part 21. When the slide member 15 is inserted by a length equal to the length X of the straight pipe portion 21 and one end of the slide member 15 reaches the other end of the straight pipe portion 21, one end of the slide member 15 is connected to the bent pipe portion 22. It abuts against the inner wall surface portion 22a and further entry is restricted (see FIG. 3).

  In the present embodiment, the length X of the straight pipe portion 21 is substantially equal to the length obtained by subtracting the thickness E of the flange 28 from the length of the slide member 15 (the length A of the receiving port 26 + the length B of the cylindrical portion 27). It is set to be equal. Therefore, when the slide member 15 is inserted by a length equal to the length X of the straight pipe portion 21, the flange 28 comes into contact with the end surface (upper end surface in FIG. 3) of the straight pipe portion 21, thereby the slide member 15 is Further entry is restricted (see FIG. 3).

  Then, in a state where the slide member 15 is inserted by the length X (that is, the entire slide member 15 other than the flange 28 is inserted), the pipe joint body 14 is connected to the drainage drain 3. Specifically, one end of the short pipe 13 is inserted into the receiving port 23 of the pipe joint body 14 and connected using an adhesive or the like. Further, the other end portion of the short pipe 13 is inserted into the receiving port 7a of the inflow portion 7 of the drainage drain 3 and connected using an adhesive or the like. Thereby, the pipe joint main body 14 is connected with the inflow part 7 of the drainage 3 through the short pipe 13 (refer FIG. 5).

  Next, the bent joint 5 and the drain pipe 12 for connection are connected. Specifically, one end portion of the drain pipe 12 is inserted into one receiving port 5a of the bent joint 5 and fixed using an adhesive or the like. Then, the outdoor side end of the penetration pipe 4 is adhere | attached on the other receiving port 5b of the bending coupling 5 (refer FIG. 6). At this time, the other end portion (the lower end portion in FIG. 6) of the drain pipe 12 faces the receiving port 26 of the slide member 15.

  In the present embodiment, all parts of the slide member 15 other than the flange 28 are inserted into the pipe joint body 14. That is, the slide member 15 is inserted into the pipe joint main body 14 by (the length A of the receiving port 26) − (the thickness E of the flange 28) + (the length C of the connecting margin). Therefore, the flange 28 formed on the upper end portion of the slide member 15 is positioned slightly below the other end portion (lower end portion in FIG. 6) of the drain pipe 12. Therefore, the other end portion of the drain pipe 12 can be opposed to the receiving port 26 of the slide member 15 without the slide member 15 and the drain pipe 12 being caught.

  Then, in the above state, the slide member 15 is slid upward by grasping the flange 28. That is, the slide member 15 is gradually pulled out from the pipe joint main body 14. As a result, the other end of the drain pipe 12 is inserted into the receiving port 26 of the slide member 15. Then, the slide member 15 is slid upward until the other end portion of the drain pipe 12 contacts the step 15c formed on the inner wall surface 15b of the slide member 15. Next, the receiving port 26 of the slide member 15 and the other end of the drain pipe 12 are fixed and sealed with an adhesive or the like. The gap between the slide member 15 and the pipe joint body 14 is sealed by the above-described seal member 24.

  As described above, when the slide member 15 is pulled out from the pipe joint main body 14, the slide member 15 may come out of the pipe joint main body 14 depending on the length of the drain pipe 12. However, the slide joint 11 is formed with a restriction structure that restricts the slide member 15 from being pulled out more than a predetermined length by the concave portion 21d of the straight pipe portion 21, the ring 29, and the concave portion 27c of the slide member 15. Has been. Therefore, it can suppress that the slide member 15 is pulled out more than needed from the inside of the pipe joint main body 14, and comes off.

  As described above, in the slide joint 11 according to the present embodiment, the inner diameter L of the straight pipe portion 21 of the pipe joint body 14 is equal to or larger than the outer diameter of the receiving port 26 of the slide member 15. Therefore, a part of the receiving port 26 of the slide member 15 can also be inserted into the pipe joint main body 14. Thereby, the full length of the slide joint 11 when the slide joint 11 is most contracted can be shortened. Therefore, the slide joint 11 can be made compact. Therefore, according to the present slide joint 11, for example, when the drainage pipe 2 and the drainage basin 3 each having a fixed position are connected as in the present embodiment, or between the drainage pipes each having a fixed position. At the time of connection, piping work can be easily performed even if the interval between each is narrow.

  Further, according to the present slide joint 11, the slide member 15 has a length obtained by subtracting the thickness E of the flange 28 from the length A of the receiving port 26, and a length C of a margin of connection between the slide member 15 and the pipe joint body 14. It is possible to insert more than the total length. As a result, the slide joint 11 can be expanded and contracted at least by the length obtained by subtracting the thickness E of the flange 28 from the length A of the receiving port 26. Therefore, by shortening the slide joint 11 by at least the length, the slide joint 11 and the connecting drain pipe 12 can be opposed to each other without causing interference. Then, the piping work can be easily performed by extending the slide joint 11 by at least the length.

  Further, in the present slide joint 11, the length B of the cylindrical portion 27 of the slide member 15 is equal to or longer than the connection length C of the slide member 15 and the pipe joint body 14. Further, in the present slide joint 11, not only the cylindrical portion 27 but also a part of the receiving port 26 can be inserted into the pipe joint main body 14. That is, substantially all of the slide member 15 can be inserted into the pipe joint main body 14. Therefore, the length B of the cylindrical portion 27 is equal to or longer than the length C of the connecting portion, that is, the total length of the slide member 15 is obtained by subtracting the thickness E of the flange 28 from the length A of the receiving port 26 and the length of the connecting margin. The slide joint 11 can be sufficiently expanded and contracted by securing a length equal to or greater than the sum of C and C.

  The length B of the cylindrical portion 27 of the slide member 15 is more preferably the length C of the connecting margin between the slide member 15 and the pipe joint body 14. Thereby, the slide member 15 can be shortened about one receptacle compared with the conventional slide joint in which a receptacle cannot be inserted in a pipe joint main body. Even in such a case, since the slide joint 11 can be expanded and contracted by about one length A of the receiving port 26, the piping work can be easily performed. Furthermore, according to such a slide joint 11, since only the receiving port 26 of the slide member 15 has come out of the pipe joint main body 14 when the slide joint 11 is extended most, the full length of the slide joint 11 is reached. Can be made shorter. Therefore, even if it is two drain pipes etc. each having a fixed position and the interval between them is very narrow, the piping work between them can be easily performed.

  Further, in the present slide joint 11, a flange having an outer diameter larger than the inner diameter L of the straight pipe portion 21 of the pipe joint body 14 protrudes radially outward from the end portion of the receiving port 26 of the slide member 15. 28 is formed. Thus, when the slide member 15 is inserted into the pipe joint main body 14, the flange 28 abuts against the end of the straight pipe portion 21 of the pipe joint main body 14, so that the slide member 15 is not further inserted. Can be regulated. The flange 28 is formed outside the receiving port 26 into which the drain pipe 12 is inserted. Therefore, a stopper that restricts further insertion of the slide member 15 can be formed outside the space through which drainage flows. Therefore, it is possible to form a stopper that restricts the insertion of the slide member 15 without hindering the flow of drainage.

  The stopper is not limited to the flange 28. If the distance between the center of the receiving port 26 and the outer end of the stopper is longer than ½ of the inner diameter of the straight pipe portion 21, the stopper protrudes radially outward from the receiving port 26. It comes into contact with the end portion of the straight pipe portion 21. Therefore, the above-described effect can be obtained.

  By the way, normally, when a receiving port is provided in a pipe or the like, the receiving port is formed so as to have a larger diameter than other portions. Therefore, a step is generated on the outer wall surface of the pipe or the like provided with the receiving port. However, in this slide joint 11, the cylindrical portion 27 is made thicker than the receiving port 26, so that no step is generated on the outer wall surface 15 a at the boundary between the receiving port 26 of the slide member 15 and the cylindrical portion 27. Thereby, since the outer wall surface 15a of the slide member 15 can be made to follow the inner wall surface of the pipe joint main body 14, it becomes possible to slide the slide member 15 smoothly.

  Further, in the present slide joint 11, the pipe joint body 14 is a so-called bent pipe having a bent pipe portion 22, and the bent pipe portion 22 is located inside the opening 21 a when viewed from the opening 21 a side of the straight pipe portion 21. It has a protruding inner wall surface portion 22a. Therefore, even when the stepped portion is not provided on the inner wall surface of the pipe joint main body 14, when the slide member 15 is inserted into the pipe joint main body 14, the cylindrical portion 27 of the slide member 15 comes into contact with the inner wall surface portion 22a. Excessive insertion of the slide member 15 is restricted. That is, a part of the inner wall surface (inner wall surface portion 22 a) of the curved pipe portion 22 of the pipe joint body 14 also serves as a stopper portion that regulates the slide member 15. Therefore, according to the present slide joint 11, it is not necessary to provide a step portion on the inner wall surface, and it is possible to suppress catching of dust and the like due to the formation of the step portion.

  In the present slide joint 11, a concave portion 27 c is formed on the outer wall surface 27 b of the cylindrical portion 27, and a concave portion 21 d is formed on the inner wall surface 21 b of the straight pipe portion 21. In addition, a substantially C-shaped ring 29 configured so that the inner diameter is smaller than the outer diameter of the concave portion 27c and the outer diameter is larger than the outer diameter of the concave portion 27c and can be expanded is accommodated in the concave portion 21d. . The concave portion 27c of the cylindrical portion 27 is slidable with respect to the ring 29 in the concave portion 21d when the slide member 15 is inserted into the pipe joint main body 14, and when the slide member 15 is pulled out from the pipe joint main body 14, the ring 29 so as to be locked.

    Thus, in the present slide joint 11, after the slide member 15 is inserted into the pipe joint main body 14, the slide member 15 is moved to a position where the concave portion 27 c of the cylindrical portion 27 and the concave portion 21 d of the straight pipe portion 21 face each other. 14, the ring 29 accommodated in the recess 21 d of the straight pipe portion 21 engages with the recess 27 c of the cylindrical portion 27. Thereby, when extending the slide joint 11, the slide of the slide member 15 more than the predetermined amount is regulated. Therefore, according to the present slide joint 11, it is possible to restrict the slide member 15 from being pulled out from the pipe joint main body 14 by a predetermined length or more.

  In addition, if there is no such a restriction structure, it is desirable to secure a large connection margin to prevent the disconnection, but according to this embodiment, since such a restriction structure is provided, It is not necessary to set the length C of the connection margin longer for stopping. Thereby, the length of the straight pipe part 21 of the pipe joint main body 14 and the slide member 15 itself can be shortened, respectively. Therefore, the slide joint 11 can be made compact.

  In the present slide joint 11, when the slide member 15 is inserted into the inner wall surface 21 b of one end portion of the straight pipe portion 21 of the pipe joint body 14, the outer wall surface 15 a of the slide member 15 and the straight pipe of the pipe joint body 14. An annular seal member 24 that closes the gap between the inner wall surface 21 b of the portion 21 is attached. Thus, according to the present slide joint 11, after inserting the slide member 15, it is not necessary to seal the gap between the slide member 15 and the pipe joint main body 14 again. The gap between the joint body 14 and the slide member 15 can be sealed.

  In the present embodiment, the slide member 15 is disposed on the upstream side of the pipe joint main body 14. Thus, as in the case of the present slide joint 11, when the end surface (tip surface in the insertion direction) of the cylindrical portion 27 of the slide member 15 is a surface orthogonal to the axial direction, the slide member 15 is placed in the pipe joint body 14. Is inserted, a step is generated in the pipe joint body 14 by the end of the cylindrical portion 27 of the slide member 15. That is, since the inner diameter of the slide member 15 is smaller than the inner diameter L of the straight pipe portion 21 of the pipe joint body 14, a step is generated due to a change in the inner diameter. However, by disposing the slide member 15 on the upstream side of the pipe joint main body 14, the drainage flows from the slide member 15 having a small inner diameter toward the pipe joint main body 14 having a large inner diameter. For this reason, the step is not a step that rises toward the downstream side, but a step that falls toward the downstream side. Can be suppressed.

  As described above, since the inner diameter of the slide member 15 is smaller than the inner diameter L of the straight pipe portion 21 of the pipe joint main body 14, when the slide member 15 is inserted into the pipe joint main body 14, the cylindrical portion 27 of the slide member 15. A step is produced in the pipe joint body 14 by the end of the pipe. Further, since the cylindrical portion 27 of the slide member 15 is formed thicker than the receiving port 26, the step is large. However, in the present slide joint 11, the inner wall surface 27 a of the cylindrical portion 27 is formed by a slope that approaches the outer wall surface toward the axial end portion (lower end portion in FIG. 2). Therefore, the step can be made relatively small. Therefore, according to this slide joint 11, it can suppress that the dust etc. in drainage get caught in the said level | step difference, and can suppress clogging.

  As described above, since the inner diameter of the slide member 15 is smaller than the inner diameter L of the straight pipe portion 21 of the pipe joint main body 14, when the slide member 15 is inserted into the pipe joint main body 14, the cylindrical portion 27 of the slide member 15. A step is generated in the pipe joint body 14 by the end of the pipe. However, in this embodiment, the slide member 15 is disposed so as to extend in a substantially vertical direction. Therefore, the step is not a step in the vertical direction at the so-called tube bottom portion. Therefore, according to the present slide joint 11, it is further suppressed that dust or the like in the drainage is caught on the step, and clogging can be further suppressed.

  As described above, the slide member 15 is more preferably arranged so as to extend in the vertical direction, but the arrangement direction of the slide member 15 is not limited to that of the present embodiment. The slide member 15 may be disposed sideways.

  Moreover, as shown in FIG. 1, in this embodiment, the pipe joint main body 14 is arrange | positioned in the attitude | position which guides the waste_water | drain from upper direction to a side. The slide member 15 is inserted into the straight pipe portion 21 of the pipe joint body 14 from above. Therefore, even if the slide member 15 is not lifted sufficiently upwards by mistake during construction (see FIG. 3), a sufficiently large flow path is secured below the curved pipe portion 22. Usually, the drainage does not flow in a so-called full state that fills the entire pipe, but flows in the lower half of the pipe. Therefore, if a flow path is secured in the lower half of the pipe, there is no particular problem in practical use. Therefore, according to the present embodiment, even if a part of the slide member 15 protrudes downward, the slide member 15 is regulated by the inner wall surface portion 22a of the curved pipe portion 22. A sufficient flow path can be secured in the portion. Therefore, there is no possibility of obstructing the flow of drainage.

<< Modification 1 >>
In the above embodiment, the slide member 15 is restricted from being pulled out of the pipe joint main body 14 by a predetermined length or more by the concave portion 27c of the cylindrical portion 27, the concave portion 21d of the straight pipe portion 21, and the ring 29. The slide joint 11 according to Modification 1 is obtained by modifying the restriction structure of the slide joint 11 according to this embodiment. Since other parts are the same as those of the slide joint 11 of the present embodiment, only the restricting structure will be described below.

-Connection structure between the slide member 15 and the pipe joint body 14-
As shown in FIG. 7, similarly to the above embodiment, a concave portion 21 c extending in the circumferential direction is formed on the inner wall surface 21 b of one end portion of the straight pipe portion 21. An annular seal member 24 is fitted in the recess 21c. Thereby, when the slide member 15 is inserted into the pipe joint main body 14 and pulled out, the gap between the two can be sealed without using an adhesive or the like. A linear protrusion 27e extending in the circumferential direction is formed on the outer wall surface 27b of the cylindrical portion of the slide member 15.

  In Modification 1, as shown in enlarged views in FIGS. 8A and 8B, the annular seal member 24 includes a main body portion 24a and a lip portion 24b. The lip portion 24 b branches from the inner peripheral surface side of the main body portion 24 a to the radially inner side in the insertion direction of the slide member 15. The seal member 24 is deformed into a state in which the lip portion 24b is separated from the main body portion 24a (the state in FIG. 8B) and a state in which the lip portion 24b is in contact with the main body portion 24a (the state in FIG. 8A). It is configured to be possible. The seal member 24 is configured such that the state where the lip portion 24b is separated from the main body portion 24a (the state shown in FIG. 8B) is a normal state (a state where no external force is applied).

  Further, in the normal state, the seal member 24 has an inner diameter larger than the outer diameter of the slide member 15 and smaller than the outer diameter of the linear protrusion 27e. However, when the lip portion 24b is in contact with the main body portion 24a, the inner diameter is larger. Is larger than the outer diameter of the slide member 15 and larger than the outer diameter of the linear protrusion 27e.

  With this configuration, as shown in FIG. 8A, when the slide member 15 is inserted into the pipe joint main body 14, the lip portion 24b of the seal member 24 is pressed against the main body portion 24a side by the linear protrusion 27e. As a result, it comes into contact with the main body 24a. Thereby, the linear protrusion 27e and the seal member 24 are not engaged, and the slide of the slide member 15 is not restricted. When the linear protrusion 27e passes through the inside of the seal member 24, the seal member 24 is not pressed against the main body portion 24a by the linear protrusion 27e, and thus the normal state is obtained.

  On the other hand, as shown in FIG. 8B, when the slide member 15 is pulled out from the inside of the pipe joint main body 14, the lip portion 24b of the seal member 24 is caught by the linear protrusion 27e and engaged with the linear protrusion 27e. Thereby, the slide member 15 is regulated so as not to be pulled out from the inside of the pipe joint main body 14 any more.

  Even with the slide joint 11 according to the first modification, it is not necessary to seal the gap between the slide member 15 and the pipe joint main body 14 after the slide member 15 is inserted. The gap between the joint body 14 and the slide member 15 can be sealed. The slide joint 11 also restricts the slide member 15 from being pulled out from the pipe joint body 14 by a predetermined length or more by engaging the lip portion 24b of the seal member 24 with the linear protrusion 27e. be able to. Therefore, by providing such a restriction structure, it is possible to shorten the length C of the connecting portion between the slide member 15 and the pipe joint main body 14 which is necessary for preventing the removal. Thereby, the length of the straight pipe part 21 of the pipe joint main body 14 and the slide member 15 itself can be shortened, respectively. Therefore, the first modification can also make the slide joint 11 compact.

<< Modification 2 >>
As shown in FIG. 9, the slide joint 11 according to the second modification is not provided with the structure for restricting the slide member 15 that is provided in the slide joint 11 according to the above embodiment. In such a case, it is preferable that the length C of the connection between the slide member 15 and the pipe joint main body 14 is longer than that of the above-described embodiment in order to prevent it from coming off. In the second modification, the slide joint 11 is enlarged as compared with the above embodiment. However, even such a slide joint 11 does not have a stepped portion on the inner wall surface as in the above-described embodiment, so that it is possible to suppress catching of dust and the like.

<< Modification 3 >>
In the above-described embodiment, the pipe joint main body 14 has the receiving port 23 that is continuous with the curved pipe portion 22 and into which a tubular member (pipe, drainage outlet, etc.) can be inserted. As shown in FIG. 10, the slide joint 11 according to the modified example 3 is provided with an insertion opening 25 instead of the receiving opening 23. Even in such a slide joint 11, the stepped portion is not provided on the inner wall surface as in the above embodiment, so that it is possible to suppress the catching of dust and the like.

<< Modification 4 >>
In the above embodiment, the pipe joint main body 14 of the slide joint 11 is formed by a bent pipe having a cylindrical straight pipe portion 21 and a curved pipe portion 22 continuous to the straight pipe portion 21. As shown in FIGS. 11A and 11B, the slide joint 11 according to the modification 4 includes a pipe joint main body 14 formed in a straight tube shape that does not have the curved pipe portion 22.

  As shown in FIGS. 11 (a) and 11 (b), the slide joint 11 according to the modified example 4 is continuous to the straight pipe portion 21 and the straight pipe portion 21, and is a tubular member (pipe, drainage outlet, etc.) And a receiving port 23 into which can be inserted.

  Similar to the above-described embodiment, the straight pipe portion 21 has an opening 21a into which the slide member 15 is inserted at one end side. The straight pipe portion 21 has an inner diameter L that is substantially equal to the outer diameter of the receiving port 26 of the slide member 15. Thereby, the straight pipe part 21 will be formed so that the slide member 15 can be inserted.

  Similarly to the above-described embodiment, the slide member 15 also has a length obtained by subtracting the thickness E of the flange 28 from the length A of the receiving port 26, and a length C of the margin of connection between the slide member 15 and the pipe joint body 14. Is formed so as to be insertable into the pipe joint main body 14 by a length obtained by adding together. As described above, the straight pipe portion 21 is formed so that a part of the receiving port 26 of the slide member 15 can be inserted. Therefore, the slide member 15 is formed such that the length B of the cylindrical portion 27 is equal to or greater than the length C of the connecting portion, so that at least the length A of the receiving port 26 is minus the thickness E of the flange 28. The length of the connecting margin C is added to the pipe joint body 14 so as to be insertable.

  As described above, even in the slide joint 11 according to the modification 4, the receiving port 26 of the slide member 15 can be inserted into the pipe joint main body 14. Thereby, the full length of the slide joint 11 when the slide joint 11 is most contracted can be shortened. Therefore, the slide joint 11 can be made compact. Accordingly, even when the slide joint 11 according to the modified example 4 is connected to the drainage pipe 2 and the drainage drain 3 each having a fixed position, or when connecting the drainage pipes each having a fixed position, Even if each interval is narrow, piping work can be easily performed.

  Further, even in the slide joint 11 according to the modified example 4, the length obtained by adding the length E obtained by subtracting the thickness E of the flange 28 from the length A of the receiving port 26 to the slide member 15 and the length C of the connecting margin. The above can be inserted. As a result, the slide joint 11 can be expanded and contracted at least by the length obtained by subtracting the thickness E of the flange 28 from the length A of the receiving port 26. Therefore, by shortening the slide joint 11 by at least the length, the slide joint 11 and the drainage pipe 12 for connection can be opposed to each other without causing interference. Then, the piping work can be easily performed by extending the slide joint 11 by at least the length.

<< Modification 5 >>
In the above-described embodiment, when the slide member 15 is inserted into the pipe joint main body 14, the cylindrical portion 27 of the slide member 15 abuts against the inner wall surface portion 22 a of the curved pipe portion 22 so that further entry is restricted. Was formed. As shown in FIGS. 12A and 12B, the slide joint 11 according to the modified example 5 includes a curved pipe portion 42 having a shape different from that of the curved pipe portion 22 of the slide joint 11 according to the above embodiment. .

  As shown in FIGS. 12A and 12B, the curved pipe portion 42 of the slide joint 11 according to the modified example 5 has a length in the axial direction of the straight pipe portion 21 that is longer than the curved pipe portion 22 of the above embodiment. It is formed to be long. The straight pipe portion 21 has an inner diameter L substantially equal to the outer diameter of the receiving port 26 of the slide member 15 as in the above embodiment, and the length X of the straight pipe portion 21 is the length of the receiving port 26. The length is set to be equal to or longer than the length obtained by adding the thickness E of the flange 28 from A and the length C of the connecting margin. The slide member 15 is formed in the same manner as in the above embodiment.

  As described above, even in the slide joint 11 according to the modified example 5, the slide member 15 is added with the length obtained by subtracting the thickness E of the flange 28 from the length A of the receiving port 26 and the length C of the connecting margin. More than the combined length, it can be inserted into the pipe joint main body 14. Thereby, also in the modification 5, piping work can be performed easily.

  In the fifth modification, the slide member 15 is regulated by the flange 28 so as not to be inserted into the pipe joint body 14 more than necessary. However, without providing the flange 28 at the upper end portion of the slide member 15, a protrusion is provided on the inner wall surface of the pipe joint main body 14 (for example, the inner wall surface 21 b of the straight pipe portion 21), and the protrusion further exceeds the slide member 15. It is good also as restricting approach.

《Draining》
The slide joint 11 according to the embodiment and each modified example can be used alone, but can also be used as a part of other piping members. Next, the drainage basin 3A including the slide joint 11 will be described with reference to FIG. In the following description, the same parts as those in the above embodiment are denoted by the same reference numerals, and the description thereof is omitted.

  The drainage basin 3A includes a main body 6 and a slide joint 11 attached to the main body 6. A drain passage 50 is formed in the main body 6. A rising tube 8 is connected to the main body 6. Similar to the above-described embodiment, the slide joint 11 includes a pipe joint main body 14 and a slide member 15. The pipe joint main body 14 includes a straight pipe portion 21 and a curved pipe portion 22 continuous to the straight pipe portion 21.

  In this drainage basin 3A, the receiving port 23 (see FIG. 1) is not formed in the curved pipe portion 22 of the pipe joint main body 14. In this drainage basin 3A, the bent pipe portion 22 of the pipe joint main body 14 is attached to the inflow portion 7 of the main body 6. In addition, the attachment aspect of the curved pipe part 22 with respect to the inflow part 7 of the main body 6 is not specifically limited, For example, it can attach by adhesion | attachment etc. Moreover, the pipe joint main body 14 and the main body 6 may be integrally formed. In other words, the main body 6 may be integrally formed with the curved pipe portion 22 of the pipe joint main body 14.

  Thereby, the waste water 3A which has the above-mentioned effect can be obtained.

  As described above, the present invention is useful for slide joints and drainage basins.

It is a figure showing the composition of the drainage system concerning an embodiment. It is side surface sectional drawing of a slide joint. It is side surface sectional drawing which shows a slide joint at the time of inserting a slide member to the innermost side in a pipe joint main body. (A), (b), (c) is a figure which shows operation | movement of the control structure for preventing the detachment | leave of a slide member. It is a figure which shows the drainage system at the time of attachment of a connection structure. It is a figure which shows the drainage system at the time of attachment of a connection structure. 6 is a side cross-sectional view of a slide joint according to Modification 1. FIG. (A), (b) is a figure which shows operation | movement of the control structure for preventing the detachment | leave of the slide member of the slide joint which concerns on the modification 1. FIG. 10 is a side cross-sectional view of a slide joint according to Modification 2. FIG. 10 is a side cross-sectional view of a slide joint according to Modification 3. FIG. (A), (b) is side sectional drawing of the slide joint which concerns on the modification 4. FIG. (A), (b) is side surface sectional drawing of the slide joint which concerns on the modification 5. FIG. It is a side view of the drainage basin concerning an embodiment.

Explanation of symbols

3A drains
11 Slide joint
12 Drain pipe
14 Fitting body
15 Slide member
15a outer wall
15c step
21 Straight pipe
21a opening
21b Inner wall surface
21d recess (second groove)
22 Curved pipe
22a inner wall surface
24 Seal member
24b Lip part (engagement part)
26 Receiver
27 Tube
27a inner wall
27b outer wall surface
27c Concave part (first groove)
27e Line projection
28 Flange (Stopper)
29 Ring (stopper member)
A Length of receiving port
B Tube length
C Connection length

Claims (11)

A pipe joint body having at least a cylindrical straight pipe portion having an opening formed on one end side;
A receiving port to which a drain pipe is connected, and a cylindrical portion continuous to one end side of the receiving port so that a step projecting radially inward is formed on one end side of the receiving port, and from the cylindrical portion side, the A slide member slidably inserted into the pipe fitting body,
An inner diameter of the straight pipe portion of the pipe joint body is equal to or larger than an outer diameter of the receiving port of the slide member,
The length of the straight pipe portion of the pipe joint main body is equal to or longer than a length obtained by adding at least a part of the receiving port of the slide member and a length of a connection between the slide member and the pipe joint main body. Is a slide joint. The slide joint according to claim 1,
The length of the said cylinder part of the said slide member is a slide joint which is more than the length of the connection margin of the said slide member and the said pipe joint main body. The slide joint according to claim 1 or 2,
A stopper protruding outward in the radial direction is formed at the receiving port of the slide member,
A slide joint, wherein a distance between a center of the receiving port and an outer end of the stopper is longer than ½ of an inner diameter of the straight pipe portion of the pipe joint body. The slide joint according to any one of claims 1 to 3,
A slide joint in which the outer diameter of the receiving port of the slide member is equal to the outer diameter of the cylindrical portion, and the outer wall surface of the boundary portion between the receiving port of the sliding member and the cylindrical portion is formed without a step. The slide joint according to any one of claims 1 to 4,
The pipe joint main body further has a curved pipe part continuous to the other end side of the straight pipe part,
The bent pipe part of the pipe joint body is continuous with the inner wall surface of the straight pipe part, and protrudes from the one end side of the straight pipe part to the inside of the opening when viewed along the axial direction of the straight pipe part. Having an inner wall surface
When the slide member is inserted from the cylindrical portion side toward the curved pipe portion from the straight pipe portion of the pipe joint main body, the cylindrical portion of the slide member becomes the inner wall of the curved pipe portion of the pipe joint main body. A slide joint that abuts against the surface and is restricted from entering further. The slide joint according to any one of claims 1 to 5,
A first groove extending in the circumferential direction is formed on the outer wall surface of the cylindrical portion of the slide member,
A second groove extending in the circumferential direction is formed on the inner wall surface of the straight pipe portion of the pipe joint body,
A substantially ring-shaped member housed in the second groove, having an inner diameter smaller than the outer diameter of the first groove and an outer diameter larger than the outer diameter of the first groove, so that the diameter can be increased. A stopper member;
The first groove is slidable with respect to the stopper member when the slide member is inserted into the pipe joint body, and is locked to the stopper member when the slide member is pulled out from the pipe body. A slide joint that is formed to The slide joint according to any one of claims 1 to 6,
When the slide member is inserted into the inner wall surface of the straight pipe portion of the pipe joint body, a gap between the outer wall surface of the slide member and the inner wall surface of the straight pipe portion of the pipe joint body is closed. A slide joint to which an annular seal member is attached. The slide joint according to any one of claims 1 to 5,
A linear protrusion extending in the circumferential direction is formed on the outer wall surface of the cylindrical portion of the slide member,
When the slide member is inserted into the inner wall surface of the straight pipe portion of the pipe joint body, a gap between the outer wall surface of the slide member and the inner wall surface of the straight pipe portion of the pipe joint body is closed. An annular seal member is attached,
The annular seal member is slidable with respect to the linear protrusion when the slide member is inserted into the pipe joint main body, and to the linear protrusion when the slide member is pulled out from the pipe main body. A slide joint in which an engaging portion to be locked is formed. The slide joint according to any one of claims 1 to 8,
The slide joint is disposed on the upstream side of the pipe joint main body. The slide joint according to claim 9, wherein
The slide joint extends in a substantially vertical direction. A slide joint according to any one of claims 1 to 10,
A main body attached to or integrally formed with the pipe joint body of the slide joint;
With drainage.

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