JP5016375B2 - Full water test fitting - Google Patents

Description

  The present invention relates to a full water test joint for inspecting water leakage in a vertical pipe of a drainage system disposed in a building.

  Conventionally, a full water test has been performed to inspect the presence or absence of water leakage in a vertical pipe of a drainage system disposed in the vertical direction of a building. In a full water test, for example, in the case of a building having a multi-story floor, the pipes are dammed up at each level or every second and third levels, and the presence or absence of water leakage is inspected by filling up the vertical pipe to be tested. The vertical pipes are connected by a full water test joint that can be equipped with a jig for blocking the pipe line during such a full water test (see, for example, Patent Document 1).

  The full water test joint described in Patent Document 1 includes a joint body into which piping is inserted from above and below. The joint main body is formed in a substantially cylindrical shape, and an insertion port for inserting a jig is formed in the side surface. Moreover, the joint for full water test is provided with the cover body which shields an insertion port, when not performing a full water test. The lid body includes a lid portion that shields the insertion port and an insertion portion that is inserted into the joint body. The insertion part is formed in a cylindrical body having an inner diameter substantially equal to the pipe inserted into the joint body, and fills the level difference caused by removing the jig in the joint body to form a smooth pipe line. To do. The lid body is fixed to the joint body by fastening the lid portion and the joint body with a bolt or the like.

With such a configuration, at the time of the full water test, the lid is removed, a jig is installed, and the pipeline is blocked. On the other hand, in cases other than the full water test, a smooth pipe line is formed by removing the jig and attaching a lid.
JP 2000-80692 A

  However, if the lid is fixed to the joint main body with a bolt or the like as in the full water test joint described in Patent Document 1, it takes time and effort to open and close the lid, which is troublesome.

  This invention is made | formed in view of this point, The place made into the objective is to attain the easy attachment / detachment operation | work of a cover body in the joint for full water.

  The full water test joint according to the present invention is used in a vertical drain pipe disposed in a vertical direction in a building or the like, and connects an upper vertical pipe and a lower vertical pipe constituting the vertical pipe and leaks water. A full water test joint capable of mounting a jig used in a full water test for inspecting the presence or absence, formed in a substantially cylindrical shape, respectively, an upper step part and a lower step part projecting radially inward from the inner peripheral surface, With respect to the vertical direction, a joint body provided between the upper step portion and the lower step portion and having a jig insertion port for inserting the jig therein, and the joint insertion port through the joint A pipe forming member whose inner peripheral surface is continuous with the upper step portion and the lower step portion without a step when inserted into the main body, and a lid body that shields the jig insertion port, and the lid body And the conduit forming member are formed separately, and the lid is rotated in a predetermined direction. It is intended to engage the fitting body by provoking.

  According to the full water test joint, since the pipe forming member is provided, the pipe can be smoothly formed in the joint body without a step when the full water test is not performed. Therefore, it becomes possible to flow drainage smoothly.

  Further, the lid body and the pipe line forming member are formed separately. Here, “formed separately” means that they can rotate relative to each other. Therefore, not only the state where the lid body and the pipe line forming member are separated, but for example, even if the lid body and the pipe line forming member are engaged with each other and the two members cannot be separated, The case where the lid body and the pipe line forming member are relatively rotatable is included in “formed separately”.

  Thus, when the lid is rotated, the pipe line forming member does not rotate together and interferes with the joint body, so that only the lid can be easily rotated. Therefore, according to the above-mentioned joint for full water test, the lid can be easily attached and detached simply by turning the lid without stopping a plurality of locations of the lid with bolts or the like as in the prior art. This also facilitates the attaching / detaching operation of the lid, and the attaching / detaching operation of the lid can be performed smoothly. Furthermore, since only the lid body needs to be turned at the time of attachment / detachment, the force required for the attachment / detachment work can be reduced.

  The full water test joint is preferably made of synthetic resin.

  This makes it possible to reduce the weight of the full water test joint. Moreover, the attachment / detachment work of the lid can be facilitated by reducing the weight of the lid. Furthermore, since it can process easily even if it is a complicated shape if it is a product made from a synthetic resin, the engagement shape of a coupling main body and a cover body can be formed in a suitable shape.

  The lid body and the pipe line forming member are separably formed, and the lid body and the pipe line forming member are engaged with the lid body and the pipe line forming member so as to be relatively rotatable. A pair of engaging portions are formed, and the engaging portion on the lid side preferably presses the pipe line forming member against the joint body when the lid body is engaged with the joint body.

  According to the above-mentioned full water test joint, the lid body and the pipe line forming member are formed so as to be separable, so that they can be separately attached to the joint body. Thereby, a cover body can be attached or detached more easily. Moreover, a pair of engaging part which engages both together so that relative rotation is possible is formed in the cover body and the pipe line formation member. Therefore, even if the lid body and the pipe line forming member are engaged, the lid body can be rotated and fixed to the joint body.

  Moreover, the engaging part by the side of a cover body is formed so that a pipe line formation member may be pressed on a joint main body, when a cover body is engaged with a joint main body. Thereby, when fixing a cover to a joint main part, it can fix, pressing a pipe line formation member in a joint main body with a cover. Accordingly, even when the lid and the pipe forming member are formed so as to be separable, it is possible to prevent the pipe forming member from rattling in the joint body when the pipe forming member is attached. . Thereby, drainage can be circulated smoothly.

  It is preferable that the pipe line forming member has an inner lid portion that shields the jig insertion port.

  As a result, the jig insertion port can be double shielded. Moreover, the pipe line forming member in which the inner lid portion is formed is pressed into the joint body by the lid body when the lid body is fixed to the joint body. Therefore, the inner lid portion is pressed against the joint body when the lid body is fixed to the joint body. Thereby, the jig insertion port can be further shielded. The inner lid portion is fixed simultaneously with the fixing operation of the lid body without using a bolt or the like. Therefore, the inner lid part that shields the jig insertion opening can be easily fixed to the joint body.

  The lid is preferably formed in a substantially disk shape.

  Accordingly, the jig insertion port can be shielded with a minimum size regardless of the shape of the jig insertion port of the joint body.

  The joint body is formed with a substantially cylindrical receiving portion that surrounds the jig insertion port and protrudes radially outward of the joint body, and the lid body has a substantially equal interval in the circumferential direction. A plurality of arranged engaging projections are provided, and holding portions that engage with the plurality of engaging projections are provided at substantially equal intervals in the circumferential direction on the inner peripheral surface or the outer peripheral surface of the receiving portion. preferable.

  According to the full water test joint, the engaging protrusions and the holding portions for fixing the lid body to the joint body are arranged at substantially equal intervals in the circumferential direction. Therefore, the plurality of engaging protrusions and the plurality of holding portions can be engaged with each other only by turning the lid. Therefore, according to the full water test joint, the attaching / detaching work of the lid can be easily performed. Further, a plurality of engaging protrusions and holding portions that are engaged with each other are arranged at substantially equal intervals. Thereby, a cover body can be fixed with an equal force with respect to a coupling main body.

  It is preferable that a hole into which a tool is inserted is formed on the rear surface of the surface that shields the jig insertion port of the lid.

  According to the full water test joint, the lid can be easily turned by inserting a tool such as a wrench into the hole. Thereby, a cover body can be attached or detached easily. Further, according to the above-mentioned full water test joint, since the lid can be turned using a tool such as a wrench, the force required for attaching and detaching the lid is small.

  The lid body is configured to move in a direction approaching the joint body when rotated in the predetermined direction, and to move in a direction away from the joint body when rotated in a direction opposite to the predetermined direction. It is preferable.

  This makes it possible to attach and detach the lid more easily. Moreover, even if the shape of the lid | cover which functions in this way is complicated by making the joint for full water tests into a product made from a synthetic resin, it can form easily.

  As described above, according to the present invention, it is possible to facilitate the attaching / detaching operation of the lid in the full water joint.

<< Configuration of piping system 1 >>
FIG. 1 is a view showing a drainage piping system 1 disposed in a multi-storey building 100 or the like.

  As shown in FIG. 1, the piping system 1 is arranged on each floor of a building 100 and extends in the vertical direction 2, the horizontal pipe 3 arranged on each floor of the building 100 and extends in the horizontal direction, and each vertical pipe 2. And a joint joint 4 for connecting the horizontal pipe 3 of each floor to the vertical pipe 2 of each floor. Moreover, the piping system 1 is equipped with the joint 10 for a full water test which can mount | wear with the jig | tool 30 (refer FIG. 7) for interrupting | blocking a pipe line in the case of the full water test which test | inspects the presence or absence of water leakage after construction. . In the present embodiment, the full water test joint 10 is made of a synthetic resin and is covered with mortar.

<< Configuration of Joint 10 for Full Water Test >>
The full water test joint 10 is installed every third floor in this embodiment. However, the installation interval of the full water test joint 10 is not limited to this, and may be provided on each floor or every other floor, for example. Moreover, it is good also as installing every 4th floor or more. The full water test joint 10 is configured so that a jig 30 (see FIG. 7) can be mounted during a full water test, and can be used as a normal pipe joint when the full water test is not performed. ing. The full water test joint 10 is provided in the middle of the vertical pipe 2 of the corresponding floor (1, 4 and 7 floor in FIG. 1), and the upper vertical pipe 2a and the lower vertical pipe 2b constituting the vertical pipe 2 are connected to each other. Connected.

  FIG. 2 is an exploded perspective view of the joint 10 for full water test. As shown in FIG. 2, the full water test joint 10 includes a joint body 11, a pipe line forming member 12, and a lid body 13.

  FIG. 3 is a side sectional view of the joint body 11. The joint body 11 includes a substantially cylindrical upper part 11a and a lower part 11b, and a central part 11c (see FIG. 5) having a substantially U shape in plan view. An upper insertion space 14a for inserting the upper vertical tube 2a is formed in the upper portion 11a, and a lower insertion space 14b for inserting the lower vertical tube 2b is formed in the lower portion 11b. A mounting space 14c for mounting the jig 30 is formed in the central portion 11c. A jig insertion port 11d for inserting the jig 30 (see FIG. 7) into the mounting space 14c is formed in the central portion 11c of the joint body 11.

  A mounting seat 11e is formed between the upper portion 11a and the central portion 11c to come into contact with the lower end of the upper vertical tube 2a inserted from above the joint body 11. A mounting seat 11f is formed between the central portion 11c and the lower portion 11b so as to come into contact with the upper end of the lower vertical tube 2b inserted from below the joint body 11. The mounting seats 11e and 11f protrude radially inward from the inner peripheral surface of the substantially cylindrical joint body 11, and cause a step in the joint body 11. The attachment seats 11e and 11f also serve as pedestals for attaching a jig 30 (see FIG. 7) described later.

  As shown in FIGS. 2 and 3, the central portion 11 c is formed with a substantially cylindrical receiving portion 11 g that surrounds the jig insertion port 11 d and projects outward in the radial direction of the joint body 11. . A plurality of holding portions 11h are provided on the inner peripheral surface of the receiving portion 11g at substantially equal intervals in the circumferential direction. The holding portion 11h is formed in a substantially L-shaped block shape, and is provided so as to slightly protrude from the inner peripheral surface of the receiving portion 11g. Moreover, each holding | maintenance part 11h is arrange | positioned so that a long side part may follow the circumferential direction of the receiving part 11g. Furthermore, the long side part of the holding part 11h is formed in a taper shape so that it leaves | separates from a short side part.

  4 is a side cross-sectional view of the full water test joint 10, and FIG. 5 is a VV cross-sectional view of FIG. As shown in FIGS. 4 and 5, the pipe line forming member 12 is inserted into the mounting space 14 c from the jig insertion port 11 d of the central portion 11 c of the joint body 11. The pipe line forming member 12 is formed in a substantially cylindrical pipe line forming part 12a, a support part 12b formed continuously from the pipe line forming part 12a and supporting the pipe line forming part 12a, and continuously formed on the support part 12b. It has an inner lid portion 12c that shields the jig insertion port 11d, and an engaging portion 12d that engages with an engaging portion 13b of the lid 13 described later. The pipe forming portion 12a is restricted from moving in the vertical direction by the mounting seats 11e and 11f in the mounting space 14c.

  In addition, the pipe line forming member 12 is formed so that the inner peripheral surface of the pipe line forming part 12a is continuous with the mounting seats 11e and 11f without a step when the pipe line forming member 12 is inserted into the mounting space 14c. . In the present embodiment, the mounting seat 11e and the inner peripheral surface of the upper vertical tube 2a are formed so as to be continuous with no step, and the mounting seat 11f and the inner peripheral surface of the lower vertical tube 2b are continuous without a step. It is formed like this. Thereby, when the upper vertical pipe 2a and the lower vertical pipe 2b are inserted into the joint body 11 and the pipe line forming member 12 is attached, a smooth pipe line without a step is formed in the full water test joint 10. It becomes.

  As shown in FIGS. 4 and 5, a seal member 15 is fitted to the outer peripheral edge of the inner lid portion 12 c of the pipe line forming member 12. Thereby, when the pipe line forming member 12 is inserted into the mounting space 14 c, the inner lid part 12 c shields the jig insertion port 11 d, and the gap between the pipe line forming member 12 and the joint body 11 is sealed by the seal member 15. .

  FIG. 6 is a side view of the full water test joint 10. As shown in FIG. 6, the lid 13 is formed in a substantially disk shape. As shown in FIG. 2, the lid 13 is formed with a plurality of engaging protrusions 13 a arranged at substantially equal intervals in the circumferential direction. The plurality of engaging protrusions 13a are formed in the same number as the plurality of holding portions 11h of the joint body 11 described above, and engage with each of the plurality of holding portions 11h.

  Specifically, first, the lid body 13 is pressed against the joint body 11 so that the plurality of engaging protrusions 13a are positioned between the plurality of holding portions 11h. And the cover body 13 is rotated and the engagement protrusion 13a is slid along the long side part of the holding | maintenance part 11h. At this time, the long side portion of the holding portion 11h is formed so as to increase in width as it approaches the short side portion. Therefore, when the lid body 13 is turned in a predetermined direction (clockwise in FIG. 2) and the engagement protrusion 13a is slid along the long side portion of the holding portion 11h, the lid body 13 approaches the joint body 11 (the joint body). It moves to the back side of the main body 11. The lid 13 is rotated until the engagement protrusion 13a comes into contact with the short side portion of the holding portion 11h. In this way, the lid 13 and the joint body 11 are firmly engaged. At this time, the seal member 15 fitted to the outer peripheral edge of the inner lid portion 12c of the pipe line forming member 12 is crushed by the lid body 13 toward the joint body 11 side. Thereby, the clearance gap between the pipe line formation member 12 and the coupling main body 11 is sealed, and water is stopped. Further, rattling of the pipe line forming member 12 with respect to the joint body 11 can be prevented.

  On the other hand, when the lid body 13 and the joint body 11 are engaged, the lid body 13 is separated from the joint body 11 when the lid body 13 is turned in a direction opposite to the predetermined direction (counterclockwise in FIG. 2). Move in the direction (front side). When the engagement protrusion 13a reaches the end of the long side portion of the holding portion 11h, the engagement between the engagement protrusion 13a and the holding portion 11h is released, and the lid body 13 is separated from the joint body 11.

  Further, the lid body 13 is formed with an engaging portion 13b that engages with the engaging portion 12d of the pipe line forming member 12 described above. The engaging portion 12d and the engaging portion 13b are formed so that the lid 13 and the pipe line forming member 12 are engaged with each other so as to be relatively rotatable. The engaging portion 13 b is formed so as to press the pipe line forming member 12 against the joint body 11 when the lid 13 is engaged with the joint body 11.

  Specifically, in the present embodiment, as shown in FIG. 2, the engaging portion 13 b is formed of a protrusion whose tip is formed in a wide disk shape, and the engaging portion 12 d includes the engaging portion 13 b. A groove 12e (see FIGS. 4 and 5) for rotatably supporting the tip is formed. The distal end portion of the engaging portion 13b is inserted into the groove 12e of the engaging portion 12d, whereby the lid body 13 and the pipe line forming member 12 are engaged with each other so as to be relatively rotatable. Further, as described above, the lid 13 moves in a direction approaching the joint body 11 when engaging the joint body 11. Therefore, when the lid 13 is engaged with the joint main body 11, the engaging portion 13 b also moves in a direction approaching the joint main body 11. Thereby, the engaging part 12d of the pipe line forming member 12 is pressed against the joint body 11 side by the engaging part 13b.

  Moreover, as shown in FIG. 6, a pair of holes 13c into which a tool is inserted are formed on one surface of the lid 13 (the back surface of the surface that shields the jig insertion port 11d). The hole 13 c is disposed at a position that is substantially point-symmetric with respect to the center of the disc-shaped lid body 13. The pair of holes 13 c is formed in a reinforcing portion 13 d provided so as to rise from one surface of the lid 13. In the present embodiment, the reinforcing portion 13d is made of metal. Therefore, the hole 13c can be prevented from being deformed or crushed by a tool. However, the configuration of the hole 13c is not limited to this. For example, the lid 13 may be formed directly. Further, the reinforcing portion 13d may be made of synthetic resin, and only the hole 13c may be formed of metal.

  The above is the configuration of the piping system 1. Next, the configuration of the jig 30 used in the full water test will be described.

<< Configuration of Jig 30 >>
FIG. 7 is a side cross-sectional view when the jig 30 is mounted in the joint body 11. As shown in FIG. 7, the jig 30 includes a closing plate 31 pressed against the lower surface of the mounting seat 11e for the upper vertical tube 2a, a support plate 32 pressed against the upper surface of the mounting seat 11f for the lower vertical tube 2b, An adjustment mechanism 33 that adjusts the distance between the closing plate 31 and the support plate 32 is provided. A sealing member 35 is bonded to the upper surface of the closing plate 31.

  The adjustment mechanism 33 includes a guide bar 33a, an upper nut 33b, and a lower nut 33c. The guide bar 33a is bridged between the closing plate 31 and the support plate 32, and a screw groove is formed on the outer surface. The upper nut 33b and the lower nut 33c engage with the thread groove of the guide bar 33a, and are configured to be movable in the vertical direction along the thread groove when rotated. With such a configuration, when the upper nut 33b is rotated and moved upward, the closing plate 31 is pressed upward. On the other hand, when the lower nut 33c is moved downward, the support plate 32 is pressed downward. In this way, the distance between the closing plate 31 and the support plate 32 can be adjusted.

  Although not shown, the guide bar 33a passes through the closing plate 31 and the support plate 32, and a communication pipe is provided inside. The communication pipe communicates the space above the closing plate 31 and the space below the support plate 32. In addition, an opening / closing valve 34 that opens and closes the communication pipe is provided in the middle of the guide rod 33a. Thereby, after the completion of the full water test, the open / close valve 34 is opened, so that the communication pipe is released, and the water accumulated above the closing plate 31 can be guided below the support plate 32.

  The above is the configuration of the jig 30. Next, the procedure of the full water test will be described. Here, the case where the presence / absence of water leakage in the vertical pipes 2 arranged up to the first to third floors of the building 100 in FIG. 1 is inspected will be described as an example.

《Full water test procedure》
First, the lid body 13 of the full water test joint 10 provided on the first floor is removed. The lid body 13 is removed by turning in the direction away from the short side portion (counterclockwise) along the long side portion of the holding portion 11h of the joint body 11. At this time, the lid 13 and the pipe line forming member 12 are engaged via the engaging portion 13b and the engaging portion 12d. Therefore, the pipe line forming member 12 is also removed by removing the lid 13 from the joint body 11. Thereby, the inside of the mounting space 14c becomes a cavity (see FIG. 3).

  Next, the jig 30 is mounted in the mounting space 14c that is hollow. As shown in FIG. 8, the jig 30 is inserted into the mounting space 14 c from the jig insertion port 11 d formed in the joint body 11. Then, the upper nut 33 b and the lower nut 33 c are turned in the mounting space 14 c to adjust the distance between the closing plate 31 and the support plate 32 of the jig 30. Specifically, the closing plate 31 is pushed up so that the closing plate 31 comes into pressure contact with the mounting seat 11e. Thereby, the communication between the upper insertion space 14a and the mounting space 14c is blocked (see FIG. 7).

  Then, in the upper floor, in this test, water is guided to the vertical pipe 2 on the first to third floors through the horizontal pipe 3 on the fourth floor and stored. A full water test is performed in this state. The full water test is performed by measuring the pressure or water level of stored water.

  After the full water test is completed, first, the on-off valve 34 is opened, and the water stored above the closing plate 31 is discharged below the support plate 32. After all the water has been discharged, the jig 30 is removed from the joint body 11. Removal is performed in the reverse order of installation. First, the upper nut 33b and the lower nut 33c are loosened to shorten the distance between the closing plate 31 and the support plate 32. Then, the jig 30 is taken out from the jig insertion port 11 d of the joint body 11.

  After removing the jig 30, the pipe line forming member 12 is inserted into the mounting space 14 c, the pipe line forming member 12 and the lid body 13 are engaged, and then the lid body 13 is fixed to the joint body 11. Specifically, the lid 13 is turned to engage the engagement protrusion 13 a of the lid 13 with the holding portion 11 h of the joint body 11. At this time, a pair of holes 13 c are formed in the lid body 13. Therefore, for example, the lid 13 can be more easily fastened to the joint body 11 by using a wrench having two pins that can be inserted into the hole 13c. Thereby, a burden of a worker can be reduced.

  Note that the outer surfaces of the joint body 11 and the lid body 13 are covered with mortar in advance. Therefore, when the lid 13 is attached to the joint body 11, the full water test joint 10 is almost entirely covered with mortar as shown in FIG. Thereby, the fire resistance of the joint 10 for a full water test can be improved. FIG. 5 is a cross-sectional view taken along the line VV in FIG. 4, but the drawing of the mortar is omitted for convenience of explanation.

  When the jig 30 is removed after the full water test, a step is generated on the inner surface of the joint body 11 by the mounting seats 11e and 11f. Therefore, there is a possibility that the flow of water supply / drainage is obstructed by the step and noise is generated, or, for example, when the vertical pipe 2 is a drain pipe, dust or the like is caught on the step.

  However, the full water test joint 10 according to the present embodiment includes the pipe forming member 12 whose inner peripheral surface is continuous with the mounting seats 11e and 11f without a step. As a result, by inserting the pipe line forming member 12, a smooth pipe line without a step is formed in the joint body 11. Therefore, according to the present full water test joint 10, it becomes possible to flow the drainage smoothly, and it is possible to prevent noise or clogging caused by the flow being inhibited.

  In the full water test joint 10, the lid body 13 and the pipe line forming member 12 are formed separately. Here, “formed separately” means that they can rotate relative to each other. Therefore, not only the state in which the lid body 13 and the pipe line forming member 12 are separated from each other but, for example, in a state in which the lid body 13 and the pipe line forming member 12 are engaged with each other and the two members cannot be separated. Even when the lid 13 and the pipe line forming member 12 are relatively rotatable, they are included in “formed separately”.

  In the present embodiment, the lid 13 and the pipe line forming member 12 are engaged with each other via the engaging portion 13b and the engaging portion 12d, but are formed to be relatively rotatable with each other even when engaged. ing. Thereby, when the cover body 13 is rotated, the pipe line forming member 12 does not rotate together and interferes with the joint main body 11, so that only the cover body 13 can be easily rotated. Therefore, according to the present full water test joint 10, the lid body 13 can be easily attached and detached by simply turning the lid body 13 without stopping a plurality of locations of the lid body 13 with bolts or the like as in the prior art. Can do. In addition, this makes it easy to attach and detach the lid 13 and allows the lid 13 to be attached and detached smoothly. Furthermore, since only the lid 13 needs to be turned at the time of attachment / detachment, the force required for the attachment / detachment work can be reduced.

  The full water test joint 10 is made of a synthetic resin. Therefore, the weight reduction of the full water test joint 10 can be achieved. Thereby, the attaching / detaching work of the lid 13 can be facilitated. Furthermore, since it can be easily processed even if it is made of a synthetic resin, the engagement shape of the joint body 11 and the lid body 13 can be formed in a suitable shape.

  Furthermore, according to the full water test joint 10, the lid body 13 and the pipe line forming member 12 are formed so as to be separable. For this reason, the joint body 11 can be mounted separately. Thereby, the cover body 13 can be attached or detached more easily. Further, the lid body 13 and the pipe line forming member 12 are formed with a pair of engaging portions 13b and 12d for engaging the both in a relatively rotatable manner. Therefore, even if the lid 13 and the pipe line forming member 12 are engaged, the lid 13 can be rotated and fixed to the joint body 11.

  Further, the engaging portion 13 b on the lid 13 side is formed so as to press the pipe line forming member 12 against the joint body 11 when the lid 13 is engaged with the joint body 11. As a result, when the lid 13 is fixed to the joint body 11, the pipe forming member 12 can be fixed while being pressed into the joint body 11 by the lid 13. Therefore, even when the lid 13 and the pipe forming member 12 are formed so as to be separable, the pipe forming member 12 is prevented from rattling in the joint body when the pipe forming member 12 is mounted. can do. Thereby, drainage can be circulated smoothly.

  Further, the pipe line forming member 12 of the full water test joint 10 has an inner lid portion 12c that shields the jig insertion port 11d. Therefore, according to the full water test joint 10, the jig insertion port 11 d can be double shielded.

  Further, the pipe line forming member 12 formed with the inner lid portion 12 c is pressed into the joint body 11 by the lid body 13 when the lid body 13 is fixed to the joint body 11. Therefore, the inner lid portion 12 c is pressed against the joint body 11 when the lid body 13 is fixed to the joint body 11. Thereby, the jig insertion port 11d can be further shielded. Further, the inner lid portion 12c is fixed simultaneously with the fixing operation of the lid body 13 without using a bolt or the like. Therefore, the inner lid portion 12c that shields the jig insertion port 11d can be easily fixed to the joint body 11.

  A seal member 15 is fitted on the outer peripheral edge of the inner lid portion 12c of the present embodiment. Thereby, when the pipe line forming member 12 is inserted into the mounting space 14c, the gap between the inner lid portion 12c and the joint body 11 can be sealed. Further, when the pipe forming member 12 is attached, the pipe forming member 12 can be further prevented from rattling in the joint body 11.

  In the full water test joint 10, the lid 13 is formed in a disk shape. Thus, the jig insertion port 11d can be shielded with a minimum size regardless of the shape of the jig insertion port 11d of the joint body 11.

  Specifically, in the present embodiment, the lid body 13 is attached to the joint body 11 by rotating the lid body 13. Therefore, when the jig insertion port 11d is rectangular as in this embodiment, when the lid 13 is, for example, rectangular, the short side of the rectangular lid 13 has a length equal to or longer than the diagonal of the jig insertion port 11d. Must be a thing. This is because when the length of the short side of the lid 13 is shorter than the diagonal line of the jig insertion port 11d, the jig insertion port 11d may not be shielded when the lid 13 is rotated.

  In the case of the present embodiment, the lid body 13 is formed in a disk shape having a diameter longer than the diagonal line of the rectangular jig insertion port 11d (see FIG. 6). Thus, if it is disk shape, even if it rotates the cover body 13 and it becomes any angle, the jig insertion port 11d can be shielded by the cover body 13. Further, the size of the lid 13 necessary for shielding the jig insertion slot 11d can be minimized.

  The shape of the jig insertion port 11d is not limited to the rectangular shape of the present embodiment. Any shape into which the jig 30 and the pipe line forming member 12 can be inserted may be used. For example, it may be square, hexagonal or trapezoidal. In this case, by setting the diameter of the lid 13 to be equal to or longer than the longest diagonal line of the jig insertion port 11d, the lid 13 can reliably shield the jig insertion port 11d.

  According to the full water test joint 10, the plurality of engaging protrusions 13 a formed on the lid body 13 are arranged at substantially equal intervals in the circumferential direction of the lid body 13. In addition, the plurality of holding portions 11 h of the joint body 11 that engage with the plurality of engagement protrusions 13 a are arranged at substantially equal intervals in the circumferential direction of the receiving portion 11 g of the joint body 11. Therefore, the plurality of engaging protrusions 13a and the plurality of holding portions 11h can be engaged with each other only by turning the lid 13 once. Therefore, according to the full water test joint 10, the lid 13 can be easily attached and detached. Further, the plurality of engaging protrusions 13a and the holding portions 11h that are engaged with each other are arranged at substantially equal intervals, whereby the lid body 13 can be fixed to the joint body 11 with an equal force. Thereby, it can prevent that only any part wears out, and can aim at the improvement of durability. In the present embodiment, the holding portions 11h are provided on the inner peripheral surface of the receiving portion 11g, but may be provided on the outer peripheral surface of the receiving portion 11g at substantially equal intervals. At this time, it is necessary to provide the engaging protrusion 13a of the lid 13 at a position where it can engage with the holding portion 11h.

  In the full water test joint 10, a position that is substantially pointed with respect to the center of the disk-shaped lid 13 on one surface of the lid 13 (the back surface of the surface that shields the jig insertion port 11 d). A pair of holes 13c are formed in the first and second holes 13c. Therefore, the lid 13 can be easily rotated by inserting and rotating a tool such as a wrench into the pair of holes 13c. Thereby, the force required for the rotation of the lid 13 can be reduced, and the burden on the worker can be reduced.

  The shape, number and arrangement of the holes 13c are not limited to those described above, and may be any. For example, only one hexagonal hole 13c may be formed so that a hexagon wrench can be inserted. In this case, the hole 13 c is preferably provided in the center of the lid 13. One of the two holes 13c may be provided at the center of the lid 13, and the other hole 13c may be provided on the outer side in the radial direction than the one hole 13c. Further, three or more holes 13 c may be formed on the concentric circle of the lid 13.

  Further, when the lid 13 is rotated in a predetermined direction (clockwise in FIG. 2), the lid 13 moves in a direction approaching the joint body 11, and when it is rotated in a direction opposite to the predetermined direction (counterclockwise in FIG. 2). It is formed to move away from the joint body 11. Thereby, the lid body 13 can be attached and detached more easily. Further, by making the full water test joint 10 made of synthetic resin as described above, the shape of the lid 13 that functions in this way (in this embodiment, the shape of the engaging protrusion 13a and the holding portion 11h) is complicated. Even if it exists, it can form easily.

  In the present embodiment, the pipe line forming member 12 includes the engaging portion 12d having the groove 12e that engages with the distal end portion of the engaging portion 13b of the lid body 13. Then, when the engaging portion 12 d is pressed by the engaging portion 13 b of the lid body 13, the pipe line forming member 12 is pressed against the joint body 11 and fixed. However, the pressing method of the pipe line forming member 12 is not limited to this. For example, as shown in FIGS. 9 and 10, a spring 16 that urges the pipe line forming portion 12 a is provided, and the engaging portion 12 d is configured to hold the spring 16 and to have a distal end portion of the engaging portion 13 b of the lid body 13. You may form in the shape which can be engaged.

  According to such a shape, when the lid body 13 is rotated in a predetermined direction and moved in a direction approaching the joint main body 11, the engaging portion 13b of the lid body 13 pushes the spring 16 toward the pipe line forming portion 12a. . As a result, the spring 16 contracts and urges the duct forming portion 12a in the direction in which force is applied. As a result, the pipe line forming member 12 is pressed against the joint body 11 (see FIG. 10). Therefore, the effect similar to the said embodiment can be show | played also by such a form.

  Moreover, if it is this form, as for the holding | maintenance part 11h of the coupling main body 11 engaged with the engagement protrusion 13a of the cover body 13, the long side part does not need to be formed in the taper shape like the said embodiment. In this case, after pushing the lid body 13 so that the engaging protrusion 13a is positioned inside the holding portion 11h, the lid body 13 is moved to a position where the engaging protrusion 13a and the holding portion 11h are engaged and fixed. Turn it. In other words, the holding portion 11h may not be formed in an L shape as long as it can hold the engaging protrusion 13a after the lid 13 is once pushed and turned as described above. For example, it may be formed in a U shape having a groove having the same shape as the engagement protrusion 13a.

  In the present embodiment, the lid 13 is provided with a metal reinforcing portion 13d in which a hole 13c is formed, and the lid 13 is turned by inserting a tool such as a wrench into the hole 13c. Made the work easier. However, the shape of the lid 13 is not limited to this, and any shape may be used. The hole 13c may not be provided, and the reinforcing portion 13d may be formed in a handle shape in advance as shown in FIGS. According to the lid 13 having such a shape, the lid 13 can be easily attached and detached without using a wrench or the like.

  In the present embodiment, the full water test joint 10 is made of synthetic resin, but the material is not limited to this and may be made of metal.

  In addition, the present invention is particularly useful in the full water test joint 10 including the pipe line forming member 12 as in the present embodiment, but the full water test joint 10 that does not include the pipe line forming member 12 is also a lid. It goes without saying that the object of facilitating the attaching / detaching operation of the body 13 can be achieved.

  Furthermore, in this embodiment, the pipe line forming member 12 has an inner lid portion 12c that closes the jig insertion port 11d. However, the pipe line forming member 12 may not include the inner lid portion 12c. Even in such a case, the lid 13 can shield the jig insertion port 11d.

  In addition, the full water test joint 10 according to the present embodiment can use the jig insertion port 11d as an inspection port or a cleaning port by removing the lid 13. Further, the full water test joint 10 is configured such that the lid 13 can be easily removed. Therefore, according to the present full water test joint 10, it is possible to smoothly perform work during inspection and cleaning, and it is possible to reduce the burden on the worker.

  As described above, the present invention is useful for a full water test joint for inspecting leakage of water in a vertical pipe of a drainage system disposed in a building.

It is a lineblock diagram of a piping system concerning an embodiment. It is a disassembled perspective view of the joint for a full water test. It is side surface sectional drawing of a coupling main body. It is side surface sectional drawing of the joint for full water tests. It is a plane sectional view of the joint for full water test. It is a side view of the joint for a full water test. It is side surface sectional drawing of the coupling main body at the time of a full water test. It is a perspective view which shows the coupling main body and jig | tool before jig | tool insertion. It is a plane sectional view of the joint for full water tests concerning a modification. It is a plane sectional view of the joint for full water tests concerning a modification.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Piping system 2 Vertical pipe 2a Upper vertical pipe 2b Lower vertical pipe 10 Joint for full water test 11 Joint main body 11d Jig insertion port 11e Mounting seat (upper step part)
11f Mounting seat (lower step)
11g Receiving part 11h Holding part 12 Pipe line forming member 12c Inner cover part 12d Engaging part 12e Groove 13 Lid 13a Engaging protrusion 13b Engaging part 13c Hole 14c Mounting space 30 Jig 100 Building

Claims (8)

It is used for vertical drainage pipes installed in the vertical direction in buildings, etc., and is used in a full water test to connect the upper and lower vertical pipes constituting the vertical pipes and to check for leaks. A fitting for full water test that can be fitted with tools,
An upper step portion and a lower step portion that are each formed in a substantially cylindrical shape and project radially inward from the inner peripheral surface, and are provided between the upper step portion and the lower step portion with respect to the vertical direction; A fitting body having a jig insertion port for inserting the inside of the fitting body,
When inserted into the joint main body from the jig insertion port, a pipe forming member whose inner peripheral surface is continuous with the upper step portion and the lower step portion without a step,
A lid that shields the jig insertion port,
The lid and the pipe line forming member are formed separately.
The lid body and the joint body are attached to the joint body by rotating the lid body in a predetermined direction, and removed from the joint body by rotating the lid body in the opposite direction,
The lid body and the pipe line forming member have a pair of engaging portions that engage the lid body and the pipe line forming member in a relatively rotatable manner,
In a state where the pipe line forming member is inserted into the joint main body, when the lid body is removed from the joint main body, the pair of engaging portions of the lid body and the pipe line forming member are engaged with each other. The pipe forming member is removed from the inside of the joint body.
Fitting for full water test.   The full water test joint according to claim 1, which is made of a synthetic resin. The joint for full water test according to claim 1 or 2, wherein the lid and the pipe line forming member are formed so as to be separable. An inner lid portion that is continuous from the outer peripheral surface of the pipe forming portion and can shield the jig insertion port when the pipe forming member is inserted into the joint body from the jig insertion port. Furthermore, the joint for a full water test as described in any one of Claim 1 to 3 . The joint for full water test according to claim 4, comprising a seal member fitted to the outer peripheral edge of the inner lid portion . The joint for full water test according to any one of claims 1 to 5 , wherein the lid is formed in a substantially disk shape. The lid body has the engagement protrusions provided at substantially equal intervals in the circumferential direction,
The joint body surrounds the periphery of the jig insertion port, and a receiving portion formed in a substantially cylindrical shape so as to protrude outward in the radial direction of the joint body ;
Holding portions provided at substantially equal intervals in the circumferential direction so as to engage with the plurality of engaging protrusions on the inner peripheral surface or outer peripheral surface of the receiving portion;
The joint for full water test according to claim 6 . The full water test joint according to any one of claims 1 to 7 , wherein a hole into which a tool is inserted is formed on a back surface of a surface that shields the jig insertion port of the lid.

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