JP2019215070A - Construction method of pipe joint - Google Patents

Abstract

To provide a novel construction method of a pipe joint.SOLUTION: A construction method of a pipe joint 1 comprises: a specification step of specifying each of fixing holes 28 used for fixing and fixing holes 28 not used for fixing; a fixation step of inserting a screw 30 (fixing tool) into the fixing holes 28 used for fixing and fixing a tightening ring 23 (flange) to a wall 14 (construction surface); a shielding step of shielding the fixing holes 28 not used for fixing with a shielding part 36 (shielding member); and a fixation confirmation step performed in a state where the screw 30 used for fixing is exposed and the fixing hole 28 not used for fixing is shielded by the shielding part 36.SELECTED DRAWING: Figure 8

Description

  The present invention relates to a method for installing a pipe joint.

  As a pipe joint fixed to a wall, for example, as shown in Patent Document 1, a joint body inserted into a through hole provided in a wall and a joint body provided on a first surface side of the wall are provided. And a second flange attached to the joint body so as to be located on the second surface side of the wall. In the above-mentioned pipe joint, in order to fix the joint main body to the wall, it is conceivable that a screw is driven into the first flange from the second flange through the wall.

JP 2014-35051 A

  An object of the present invention is to provide a novel pipe joint construction method.

Hereinafter, means for solving the above-described problems and the effects thereof will be described.
In order to solve the above-mentioned problem, the pipe joint installation method according to the first aspect of the present invention is a method for constructing a pipe joint, in which a disc-shaped flange having a plurality of fixing holes through which a fixing tool is inserted is provided at intervals in a circumferential direction. It is screwed to an end, and the screwing position of the flange with respect to the end is changeable, and a part of the plurality of fixing holes corresponding to the screwing position of the flange with respect to the joint body. A method of installing a pipe joint that is fixed to a construction surface using the fixing hole and does not correspond to the screwing position of the flange, and the remaining fixing hole is not used for the fixing, wherein the fixing used for the fixing is performed. A fixing step of specifying the fixing hole and the fixing hole not used for fixing, and a fixing step of inserting the fixing tool into the fixing hole used for fixing and fixing the flange to the construction surface, Not used for fixing A shielding step of shielding the fixing hole with a shielding member, and the fixing performed in a state where the fixing tool used for the fixing is exposed and the fixing hole not used for the fixing is shielded by the shielding member. Confirmation step.

  According to the above method, when confirming in the confirmation step that the flange of the pipe joint is fixed to the construction surface by the fixing tool, the fixing hole in which the fixing tool is not inserted among the fixing holes formed in the flange. The holes, in other words, the fixing holes not used for the fixing are shielded by the shielding member. For this reason, in the confirmation step, it is erroneously recognized that the fixing device is not inserted into the fixing hole not used for the fixing, so that it is possible to suppress unnecessary insertion of the fixing device. become.

  The method for installing a pipe joint according to the invention according to claim 2 is a method for installing a pipe joint in which a flange having a fixing hole through which a fixing tool is inserted and a tool hole for hanging a tool is screwed into the joint body. A screwing step of screwing the flange to the joint body through the tool hole by the tool; and a fixing step of fixing the flange to the work surface through the fixing hole by the fixing tool. A shielding step of shielding the tool hole with a shielding member; and a fixing confirmation step performed in a state where the fixing tool is exposed and the tool hole is shielded by the shielding member.

  According to the above method, when it is confirmed in the confirmation step that the flange of the pipe joint is fixed to the construction surface by the fixture, the tool hole formed in the flange is shielded by the shielding member. For this reason, in the checking step, the fixing hole is erroneously recognized as a fixing hole in which the fixing tool has not been inserted into the tool hole, and it is possible to suppress unnecessary insertion of the fixing tool. .

Sectional drawing which shows the pipe joint fixed to the wall. FIG. 4 is a perspective view showing an attachment state of each part to an end of the joint main body in the pipe joint. The front view which shows a pipe joint and its fastening ring. The front view which shows the construction aid for pipe fittings. The perspective view which shows the construction procedure of the pipe joint with respect to the wall. The perspective view which shows the construction procedure of the pipe joint with respect to the wall. The perspective view which shows the construction procedure of the pipe joint with respect to the wall. The front view which shows the use aspect of a construction auxiliary tool. The front view showing the state where the shielding part of the construction auxiliary tool was stuck on the fastening ring. Sectional drawing which shows the driving mode of the screw used for fixing of a pipe joint.

Hereinafter, an embodiment of a pipe joint will be described with reference to FIGS. 1 to 10.
As shown in FIG. 1, for example, an L-shaped joint main body 2 of the pipe joint 1 is available. In this joint body 2, it is possible to connect the pipe 3 to one end 2a (upper end in FIG. 1) and to connect a water tap to the other end 2b (right end in FIG. 1). Has become. In addition, a metal tubular in-core 4 is inserted into the end of the pipe 3. The immersion of the incore 4 into the pipe 3 is suppressed by the flange 4 a formed at the end of the incore 4.

  Inside the one end 2 a of the joint body 2, a housing portion 5 for housing the end of the pipe 3 is formed. A step portion 6 is formed inside the accommodation portion 5. Two O-rings 7 and 8 are arranged on the inner peripheral surface of the housing portion 5 at intervals from each other in the direction of the center line (axis) of the end portion 2a. A pair of lock rings 10 and 11 with a spacer 9 interposed therebetween is inserted into the opening of the end 2a at a portion of the inner peripheral surface of the housing 5 closer to the opening of the end 2a than the O-rings 7 and 8. Is held by the pressed pressing wheel 12. An O-ring 13 seals between the outer peripheral surface of the press ring 12 and the inner peripheral surface of the opening of the end 2a.

  Then, the end of the pipe 3 is inserted into the accommodation portion 5 of the end 2a of the joint body 2 from the opening of the end 2a. More specifically, the end of the pipe 3 is inserted into the housing 5 until the incore 4 inserted into the end of the pipe 3 comes into contact with the step 6 in the housing 5. At this time, the end of the pipe 3 penetrates the O-rings 7, 8, the spacer 9, the lock rings 10, 11, and the pressing ring 12, and the lock rings 10, 11 are pressed against the outer peripheral surface of the pipe 3. This prevents the pipe 3 from coming out of the storage section 5. Further, at this time, the O-rings 7 and 8 come into contact with the outer peripheral surface of the pipe 3, whereby the fluid (water or the like) flowing in the joint body 2 flows between the outer peripheral surface of the pipe 3 and the inner peripheral surface of the housing 5. Leakage from outside to the outside of the pipe joint 1 is suppressed.

  The other end 2 b of the joint body 2 is inserted into a through hole 15 provided in the wall 14. A female screw portion 16 into which a water tap or the like can be screwed is formed inside the end portion 2b, while a male screw portion 17 (FIG. 2) is formed on the outer peripheral surface of the end portion 2b. A nut 18, a rotation prevention plate 19, and a rubber packing 20 are provided on the first surface side (left surface side in FIG. 1) of the wall 14 at the end 2 b of the joint body 2. A rubber packing 21, a sliding packing 22, and a tightening ring 23 are provided at a portion of the end 2 b of the joint body 2 on the second surface side (the right surface side in FIG. 1) of the wall 14.

  As shown in FIG. 2, the upper and lower ends of FIG. 2 on the outer peripheral surface (male thread portion 17) of the end 2b of the joint body 2 are flat flat portions 24 and 25 (FIG. (Only the upper end 24 is shown). The nut 18, the rotation preventing plate 19, the rubber packing 20, the rubber packing 21, the sliding packing 22, and the tightening ring 23 are each formed in a plate shape having holes 18a, 19a, 20a, 21a, 22a, 23a. Have been. The nut 18, the rotation preventing plate 19, the rubber packing 20, the rubber packing 21, the sliding packing 22, and the tightening ring 23 are provided with the holes 18 a, 19 a, 20 a, 21 a, 22 a, and 23 a of the joint body 2. The end portions 2b are sequentially penetrated.

  The nut 18 is formed in a polygonal plate shape. On the inner peripheral surface of the hole 18a of the nut 18, a female screw 18b screwed with the male screw portion 17 of the end 2b is formed. Accordingly, when the nut 18 is rotated around the center line (axis) of the end 2b, the screwing position of the nut 18 with respect to the end 2b is changed through the male screw portion 17 and the female screw 18b, and the nut 18 is accordingly moved to the end 2b. Is displaced in the axial direction of. Further, the outer peripheral edge 26 and the inner peripheral edge 27 of the nut 18 have a shape protruding in a direction away from the opening of the end 2b as shown in FIG. Is thicker than the part. Note that such a nut 18 serves as a first flange provided on the joint body 2 so as to be located on the first surface side of the wall 14.

  The rotation preventing plate 19 shown in FIG. 2 is for restricting rotation of the nut 18 around the axis of the end 2b. The male screw portion 17 of the end 2b penetrating the hole 19a of the rotation preventing plate 19 is not screwed with the inner peripheral surface of the hole 19a. For this reason, the rotation prevention plate 19 can be slid in the axial direction with respect to the end 2b. Further, the inner peripheral surface of the hole 19a in the counter-rotation prevention plate 19 is in surface contact with the flat portions 24, 25 formed in the male screw portion 17 of the end portion 2b, so that the end 2b in the counter-rotation prevention plate 19 is formed. A pair of surface contact portions 19b for restricting relative rotation with respect to the same end portion 2b around the axis of are formed. On the other hand, a projection 19c is formed on the outer edge of the rotation prevention plate 19 so as to project toward the nut 18 and come into surface contact with the outer edge of the nut 18. By bringing the projection 19c into surface contact with the outer edge of the nut 18, the relative rotation of the end 2b of the nut 18 around the axis with respect to the same end 2b is regulated through the rotation prevention plate 19. .

  The male thread 17 of the end 2b passing through the hole 20a of the rubber packing 20, the hole 21a of the rubber packing 21, and the hole 22a of the sliding packing 22 is screwed with the inner peripheral surfaces of the holes 20a, 21a, 22a. I haven't. Therefore, the rubber packing 20, the rubber packing 21, and the sliding packing 22 can be slid in the axial direction with respect to the end 2b. As shown in FIG. 1, the rubber packing 20 is disposed between the nut 18 and the rotation preventing plate 19 and the first surface (the left surface in FIG. 1) of the wall 14, while the rubber packing 21 and the sliding packing 22 are provided. Is disposed between the second surface of the wall 14 (the right surface in FIG. 1) and the fastening ring 23.

  In the fastening ring 23, a female screw 23b screwed with the male screw portion 17 of the end 2b is formed on the inner peripheral surface of the hole 23a. Therefore, when the tightening ring 23 is rotated around the axis of the end 2b, the screwing position of the tightening ring 23 with respect to the end 2b is changed through the male screw portion 17 and the female screw 23b, and accordingly the tightening ring 23 is Displaced in the axial direction of the portion 2b. The fastening ring 23 serves as a second flange provided on the joint main body 2 so as to be located on the second surface side of the wall 14 (FIG. 1).

  As shown in FIG. 3, a plurality of (four in this example) fixing holes 28 are formed around the hole 23 a in the fastening ring 23 at equal intervals in the circumferential direction of the fastening ring 23. Further, a pair of tool holes 29 are formed at symmetrical positions with respect to the center line of the tightening ring 23. The fixing hole 28 is for inserting a screw 30 (fixing tool) for fixing the joint body 2 to the wall 14 (FIG. 1). The tool hole 29 is for rotating the tightening ring 23 with respect to the end 2b using a tool around the axis of the end 2b.

  The pipe joint 1 (joint main body 2) is fixed to the wall 14 by screwing the screw 30 from the fastening ring 23 to the nut 18 via the wall 14. Specifically, of the plurality of fixing holes 28 in the tightening ring 23, two fixing holes 28 which are located farthest from each other are selected and the screw 30 is inserted. Further, the screw 30 is driven into the nut 18 via the tightening ring 23, the sliding packing 22, the rubber packing 21, the wall 14, the rubber packing 20, and the rotation preventing plate 19 shown in FIG. As a result, the fastening ring 23 is fixed to the second surface (construction surface) of the wall 14 using a part of the plurality of fixing holes 28, and the pipe joint 1 (the joint body 2) is It becomes fixed so that relative rotation is impossible.

Next, a description will be given of a fitting aid for the fitting used in the above-described working (fixing) of the fitting 1 to the wall 14.
As shown in FIG. 4, the construction assisting tool 31 includes a base sheet 32 having a peeling surface 32a, and a label 33 temporarily fixed with glue to almost the entire peeling surface 32a of the base sheet 32. I have. In the center of the base sheet 32 and the label 33, an insertion hole 34 through which the end 2b (FIG. 3) of the joint body 2 can be inserted is formed.

  At the upper end and the lower end in FIG. 4 of the inner peripheral surface of the insertion hole 34, a line contact portion 34a that makes line contact with the flat portions 24 and 25 formed on the male screw portion 17 of the end 2b of the joint body 2 is provided. Is formed. When the end 2b of the joint body 2 is inserted into the insertion hole 34 of the construction assisting tool 31, these line contact portions 34a engage with the end 2b through line contact with the flat portions 24 and 25. , And functions as a positioning part for determining the position of the construction aid 31 around the axis of the end 2b with respect to the end 2b (the joint body 2).

  As described above, when the positioning of the construction assisting tool 31 around the axis with respect to the end 2b (FIG. 3) is performed around the insertion hole 34 in the base sheet 32 and the label 33, Two exposed portions 35 for exposing the two fixing holes 28 at the farthest positions are formed at equal intervals in the circumferential direction of the insertion hole 34. With respect to these exposed portions 35, when the construction aid 31 is positioned with respect to the end 2b, the fixing hole 28 of the tightening ring 23 is positioned so as to avoid a portion corresponding to the end 2a of the joint body 2. In this case, the fixing hole 28 is formed so as to be exposed through the exposing portion 35.

  Further, at the portion around the insertion hole 34 in the label 33 and between the exposed portions 35, in other words, at a position different from the exposed portion 35 in the circumferential direction of the insertion hole 34, the separation surface 32 a is separated from the label 33. There is provided a shielding portion 36 that can be peeled off from the adhesive to form an adhesive seal. In this example, two shielding portions 36 are provided. As described above, when the positioning of the construction assisting tool 31 around the axis with respect to the end 2b (FIG. 3) is performed as described above, the shielding portion 36 shields the tool hole 29 and exposes the exposed portion. The fixing holes 28 other than the fixing holes 28 exposed through 35 are formed so as to be shielded.

Next, a method of installing the pipe joint 1 will be described.
As shown in FIG. 5, when fixing the pipe joint 1 to the wall 14, the pipe 3 is connected to the end 2 a of the joint main body 2, and the nut 18 is connected to the end 2 b of the joint main body 2. The rotation prevention plate 19 and the rubber packing 20 are attached. Incidentally, the mounting position of the nut 18 in the axial direction with respect to the end 2b is adjusted by rotating the nut 18 around the axis of the end 2b and changing the screwing position of the nut 18 with respect to the same end 2b. Can be. After the adjustment of the mounting position of the nut 18 with respect to the end 2b, the relative rotation about the axis with respect to the end 2b of the nut 18 is regulated by the rotation preventing plate 19 mounted on the end 2b. Of the rubber packing 20 is performed.

  The inner diameter of the hole 20 a of the rubber packing 20 is smaller than the outer diameter of the end 2 b of the joint body 2. For this reason, by mounting the nut 18, the rotation prevention plate 19, and the rubber packing 20 in this order on the end 2b of the joint body 2, when the end 2b passes through them, the rubber packing The stopper 20 is in close contact with the end 2b and serves as a stopper for preventing the rotation prevention plate 19 from falling off from the end 2b.

  A take-out jig 37 used to insert the end 2b into the through hole 15 of the wall 14 is attached to the tip of the end 2b to which the nut 18, the rotation preventing plate 19, and the rubber packing 20 are attached. The take-out jig 37 includes a main body 38 screwed into the female screw portion 16 (FIG. 1) in the end 2b, and a chain 40 of a predetermined length attached to the main body 38. Then, with the pipe joint 1 (joint body 2) to which the pipe 3 is connected disposed above the wall 14, the chain 40 of the extraction jig 37 attached to the end 2 b of the joint body 2 is connected to the wall 14. It hangs down so as to be located corresponding to the through hole 15.

  Then, by pulling out the chain 40 to the opposite side of the wall 14 from the pipe joint 1 through the through hole 15, the end 2 b of the joint main body 2 is inserted into the through hole 15. When the end 2b is inserted into the through hole 15, the outer periphery of the tip of the end 2b projects from the wall 14 to expose the male screw portion 17. That is, the mounting position of the nut 18 in the axial direction with respect to the end portion 2b is adjusted in advance in accordance with the thickness of the wall 14 so that the male screw portion 17 is exposed at this time. With the end 2b inserted through the through hole 15 of the wall 14, the rubber packing 21, the sliding packing 22, and the tightening ring 23 shown in FIG. It is attached.

  FIG. 6 shows a state in which the rubber packing 21, the sliding packing 22, and the tightening ring 23 are attached to the outer periphery of the distal end of the end 2b. In this state, the take-out jig 37 is removed from the end 2b of the joint main body 2, and the tightening ring 23 is tightened using the tool 41 shown in FIG. The tool 41 includes a main body bar 42 having a predetermined length, and a movable bar 43 rotatably supported with respect to a central portion of the main body bar 42 in the longitudinal direction. A pin 42 a is provided at a tip of the main body bar 42, while a pin 43 a is provided at a tip of the movable bar 43.

  In the method of installing the pipe joint 1 for fixing the pipe joint 1 to the wall 14, a screwing step, a specifying step, a fixing step, a shielding step, and a checking step, which will be described later, are sequentially performed. Hereinafter, each of these steps will be individually described in detail.

[Screwing process]
In this step, the tightening ring 23 is screwed to the end 2 b of the joint body 2 through the tool hole 29 of the tightening ring 23 by the tool 41. Specifically, as shown in FIG. 7, the pins 42a and 43a of the tool 41 are inserted into the tool holes 29 of the tightening ring 23, and in this state, the tightening ring 23 is inserted through the tool 41 around the axis of the end 2b. Rotate. As a result, the screwing position of the fastening ring 23 with respect to the end 2b is changed, and the fastening ring 23 is accordingly displaced in the axial direction of the end 2b. Then, the tightening ring 23 is rotated relative to the end 2b by the tool 41 so that the tightening ring 23 is displaced toward the wall 14 in the axial direction of the end 2b. Done. When the screwing position of the tightening ring 23 with respect to the end 2b is changed by rotating the tightening ring 23 relative to the end 2b, the fixing holes 28 formed in the tightening ring 23 are formed. The position of the tightening ring 23 in the circumferential direction also changes.

[Specific process]
In this step, the fixing holes 28 used for fixing the pipe joint 1 and the fixing holes 28 not used for fixing are specified among the plurality of fixing holes 28 in the tightening ring 23. Specifically, as shown in FIG. 8, the construction assisting tool 31 is attached to the fastening ring 23 in contact with the wall 14 such that the end 2 b exposed from the wall 14 is inserted into the insertion hole 34 of the construction assisting tool 31. Apply At this time, the construction assisting tool 31 is engaged with the end 2b through the line contact between the line contact portion 34a of the insertion hole 34 and the flat portions 24 and 25 of the end 2b, and the end is engaged by the engagement. Positioning about the axis with respect to 2b is performed.

  When the construction aid 31 is positioned with respect to the end 2b as described above, if there are the fixing holes 28 exposed from the two exposed portions 35 of the construction aid 31, the fixing holes 28 are pipes to the wall 14. It can be specified that the joint 1 should be used for fixing. Further, when the construction aid 31 is positioned with respect to the end 2b, the fixing holes 28 other than the fixing holes 28 to be used for fixing are shielded by the shielding part 36 of the construction aid 31, Through such shielding, the fixing hole 28 can be specified as the fixing hole 28 not used for the fixing. At this time, the tool hole 29 is also shielded by the shield part 36 of the construction aid 31.

  When the construction assisting tool 31 is positioned with respect to the end 2b, if there is no fixing hole 28 exposed from the exposed portion 35, the end 2b is exposed such that any fixing hole 28 is exposed from the exposed portion 35. The screwing position of the tightening ring 23 with respect to is adjusted. More specifically, the relative position of the tightening ring 23 with respect to the end 2b around the axis of the end 2b is adjusted using the tool 41 shown in FIG. 7 so that one of the fixing holes 28 is exposed from the exposed portion 35. Is done.

[Fixing process]
In this step, as shown in FIG. 8, the screw 30 is inserted through the fixing hole 28 exposed from the exposed portion 35 of the construction assisting tool 31, that is, the fixing hole 28 used for the fixing, and the fastening ring 23 is Fixed to. Specifically, the screw 30 is driven into the nut 18 via the tightening ring 23, the sliding packing 22, the rubber packing 21, the wall 14, the rubber packing 20, and the rotation preventing plate 19 shown in FIG. Thereby, the fastening ring 23 is fixed to the construction surface (the right side in FIG. 1) of the wall 14 by using the fixing hole 28, and the pipe joint 1 is fixed to the wall 14 so as to be relatively non-rotatable. .

  When the pipe joint 1 is fixed to the wall 14 as described above, the tool holes 29 and the fixing holes 28 not used for the fixing are shielded by the shielding portion 36 of the construction assistant 31. For this reason, accidental insertion of the screw 30 into the tool hole 29 and the fixing hole 28 not used for fixing is suppressed. Incidentally, if the screw 30 is inserted into the fixing hole 28 not used for the fixing and is driven into the wall 14, there is a possibility that the screw 30 is driven into the end 2 a of the joint body 2 when penetrating the wall 14 or the like. However, this is prevented from occurring.

[Shielding process]
In this step, the tool hole 29 of the tightening ring 23 and the fixing hole 28 not used for fixing are shielded while the construction aid 31 is removed from the end 2b of the joint body 2. . More specifically, after removing the construction aid 31 from the end 2b, the shielding portion 36 is separated from the label 33 and peeled off from the release surface 32a of the base sheet 32, and the peeled shielding portion 36 is used as an adhesive seal as shown in FIG. Is attached to the tightening ring 23 so as to cover the tool hole 29 and the fixing hole 28 not used for fixing. In addition, the above-mentioned shielding part 36 affixed to the fastening ring 23 as an adhesive seal plays a role as a shielding member for shielding the tool hole 29 of the fastening ring 23 and the fixing hole 28 not used for fixing. .

[Confirmation process]
This step is for confirming whether or not a screw 30 for fixing the pipe joint 1 to the wall 14 is driven through an appropriate fixing hole 28. As shown in FIG. 9, such a check is performed by attaching the shielding portion 36 as an adhesive seal to the tightening ring 23 to shield the tool hole 29 and the fixing hole 28 not used for fixing, and The fixing is performed in a state where the fixing holes 28 through which the screws 30 are inserted (the fixing holes 28 used for the fixing) are exposed. For this reason, at the time of the above confirmation, it is erroneously recognized that the screw 30 has not been inserted into the tool hole 29 of the tightening ring 23 and the fixing hole 28 not used for the fixing, which is unnecessary. The insertion and driving of the screw 30 can be suppressed.

  Further, by attaching the shielding portion 36 to the fastening ring 23 as an adhesive seal, the tool hole 29 and the fixing hole 28 not used for fixing can be kept shielded by the shielding portion 36. By holding the tool hole 29 and the fixing hole 28 not used for fixing in the tightening ring 23 in the state of being shielded by the shielding portion 36 in this manner, the tool hole 29 and the fixing hole 28 are not used for the above-described confirmation. It is more effectively suppressed that the screw 30 is erroneously inserted into the fixing hole 28.

Next, the operation of the pipe joint 1 in the present embodiment will be described.
As shown in FIG. 10, a screw 30 for fixing the pipe joint 1 to the wall 14 is inserted into the fixing hole 28 of the tightening ring 23, and a nut 18 is inserted by the operator from the tightening ring 23 side. Driven to the side. When this screw 30 is properly driven without inclining with respect to the center line of the fixing hole 28 of the tightening ring 23, the screw 30 becomes like the screw 30 located on the upper side in FIG. That is, the screw 30 is fixed to the fixing hole 28 of the tightening ring 23, the sliding packing 22, the rubber packing 21, the wall 14, the rubber packing 20, the rotation prevention plate 19, and the outer peripheral edge 26 and the inner peripheral edge 27 of the nut 18. And through the part between.

  On the other hand, if the screw 30 driven by the operator from the tightening ring 23 side to the nut 18 side is inclined with respect to the center line of the fixing hole 28 of the tightening ring 23, the tip of the screw 30 in the driving direction (FIG. 10 (left end portion) is swung toward the outer peripheral edge 26 or the inner peripheral edge 27 of the tightening ring 23. The dashed-dotted line L1 in FIG. 10 shows the movement locus of the screw 30 when the screw 30 is driven in a state where the tip of the screw 30 in the driving direction swings toward the outer peripheral edge 26 of the tightening ring 23. ing. A dashed line L2 in FIG. 10 shows a movement locus of the screw 30 when the screw 30 is driven in a state where the tip of the screw 30 in the driving direction swings toward the inner peripheral edge 27 of the tightening ring 23. ing.

  As described above, assuming that the screw 30 is driven in a state inclined with respect to the center line of the fixing hole 28, the screw 30 is not sufficiently driven into the nut 18 and the pipe joint 1 (joint body 2) ) May not be properly fixed, or the end 2b of the joint body 2 may be damaged by the tip of the screw 30.

  However, if the screw 30 is driven in a state of being inclined with respect to the center line of the fixing hole 28, and the tip of the screw 30 reaches the thickened outer peripheral edge 26 or inner peripheral edge 27, the outer peripheral edge The following phenomenon occurs depending on the inclination angle of the screw 30 with respect to the inner peripheral surface 26a of the inner peripheral surface 26 and the outer peripheral surface 27a of the inner peripheral edge 27.

  That is, when the tip of the screw 30 is swung toward the outer peripheral edge 26 and the inclination angle of the screw 30 with respect to the peripheral surface 26a of the outer peripheral edge 26 is relatively small, the distal end of the screw 30 is The screw 30 is guided so as to be displaced in a direction in which the inclination of the screw 30 is eliminated, whereby the screw 30 is correctly driven so as not to be inclined with respect to the center line of the fixing hole 28.

  When the tip of the screw 30 swings toward the outer peripheral edge 26 and the inclination angle of the screw 30 with respect to the peripheral surface 26a of the outer peripheral edge 26 is relatively large, the outer peripheral edge 26 is made thick. Therefore, when the tip of the screw 30 approaches the outer peripheral edge 26, the response received by the worker with the driving of the screw 30 changes. Such a change in response allows the operator to know that the screw 30 is inclined with respect to the center line of the fixing hole 28. Then, the worker who knows that the screw 30 is tilted by the above-mentioned response can correctly re-drive the screw 30 so as not to tilt.

  On the other hand, when the tip of the screw 30 is swinging toward the inner peripheral edge 27 and the inclination angle of the screw 30 with respect to the peripheral surface 27a of the inner peripheral edge 27 is relatively small, the distal end of the screw 30 is The screw 30 is guided so as to be displaced in a direction in which the inclination of the screw 30 is eliminated, whereby the screw 30 is correctly driven so as not to be inclined with respect to the center line of the fixing hole 28.

  When the tip of the screw 30 swings toward the inner peripheral edge 27 and the inclination angle of the screw 30 with respect to the peripheral surface 27a of the inner peripheral edge 27 is relatively large, the inner peripheral edge 27 is made thick. Therefore, when the tip of the screw 30 approaches the inner peripheral edge 27, the response received by the operator with the driving of the screw 30 changes. Such a change in response allows the operator to know that the screw 30 is inclined with respect to the center line of the fixing hole 28. Then, the worker who knows that the screw 30 is tilted by the above-mentioned response can correctly re-drive the screw 30 so as not to tilt.

According to the embodiment described above, the following effects can be obtained.
(1) It is possible to prevent the pipe joint 1 (joint main body 2) from being unable to be properly fixed to the wall 14 by driving the screw 30 while being inclined with respect to the center line of the fixing hole 28 of the tightening ring 23. it can.

  (2) The screw 30 is inclined with respect to the center line of the fixing hole 28 of the tightening ring 23, and the tip of the screw 30 is swung toward the inner peripheral edge 27, and the screw 30 is driven in that state. This can prevent the end 2b of the joint main body 2 from being damaged by the tip of the screw 30 and leading to fluid leakage from the end 2b.

  (3) By making the outer peripheral edge 26 and the inner peripheral edge 27 of the nut 18 thick, the strength of the nut 18 can be increased. For this reason, when the pipe joint 1 is fixed to the wall 14 by driving the screw 30 from the tightening ring 23 into the nut 18, even if a force from the screw 30 is applied to the nut 18, the action of the force acts on the nut 18. 18 can be suppressed from being deformed.

  (4) The nut 18 screwed to the end 2b of the pipe joint 1 can be displaced in the axial direction of the end 2b by adjusting the screwing position. Through such displacement of the nut 18, the amount of protrusion of the end 2b from the wall 14 when the end 2b is inserted into the through hole 15 of the wall 14 can be adjusted according to the thickness of the wall 14. By the adjustment, an appropriate screwing allowance of the fastening ring 23 to the end 2b can be secured.

In addition, the said embodiment can also be changed as follows, for example.
-Instead of forming both the outer peripheral edge 26 and the inner peripheral edge 27 of the nut 18 to be thick, only one of the outer peripheral edge 26 and the inner peripheral edge 27 may be formed to be thick.

  It is not essential to provide the pipe joint 1 with the rotation prevention plate 19 for restricting the rotation of the end 2b of the nut 18 around the axis. For example, when the flange is formed integrally with the end 2b of the joint main body 2 instead of providing the nut 18, the above-mentioned rotation prevention plate 19 can be omitted.

-The projection 19c of the rotation prevention plate 19 may be omitted.
-It is not essential to form the tool hole 29 in the tightening ring 23.
The number of the fixing holes 28 of the tightening ring 23 may be formed by the number necessary for fixing the pipe joint 1 to the wall 14 (two in this example).

-About the shield part 36 of the label 33 in the construction assistance tool 31, it is not necessarily required to be an adhesive seal.
[Other technical ideas]
Next, technical ideas that can be grasped from the above embodiment will be described.

(B) A disk-shaped flange having a plurality of fixing holes into which the fixing tool is inserted at a circumferential interval is screwed into an end of the joint body, and a screwing position of the flange with respect to the end is changed. It is possible to fix to the work surface using a part of the fixing holes corresponding to the screwing position of the flange with respect to the joint body, among the plurality of fixing holes, and The remaining fixing holes not corresponding to the position is a method of installing a pipe joint not used for the fixing,
A specifying step of specifying each of the fixing hole used for the fixing and the fixing hole not used for the fixing,
A fixing step of inserting the fixing tool into the fixing hole used for the fixing and fixing the flange to the construction surface,
A shielding step of shielding the fixing hole not used for the fixing with a shielding member,
Confirming the fixation in a state where the fixing tool used for the fixation is exposed and the fixing hole not used for the fixation is shielded by the shielding member.

  According to the above method, when confirming in the confirmation step that the flange of the pipe joint is fixed to the construction surface by the fixing tool, the fixing hole in which the fixing tool is not inserted among the fixing holes formed in the flange. The holes, in other words, the fixing holes not used for the fixing are shielded by the shielding member. For this reason, in the confirmation step, it is erroneously recognized that the fixing device is not inserted into the fixing hole not used for the fixing, so that it is possible to suppress unnecessary insertion of the fixing device. become.

(B) A method for constructing a pipe joint in which a flange having a fixing hole through which a fixing tool is inserted and a tool hole for hanging a tool is screwed into the joint body,
A screwing step of screwing the flange to the joint body through the tool hole by the tool,
A fixing step of fixing the flange to a construction surface via the fixing hole by the fixing tool,
A shielding step of shielding the tool hole with a shielding member,
A fixing confirmation step performed in a state where the fixing tool is exposed and the tool hole is shielded by the shielding member.

  According to the above method, when it is confirmed in the confirmation step that the flange of the pipe joint is fixed to the construction surface by the fixture, the tool hole formed in the flange is shielded by the shielding member. For this reason, in the checking step, the fixing hole is erroneously recognized as a fixing hole in which the fixing tool has not been inserted into the tool hole, and it is possible to suppress unnecessary insertion of the fixing tool. .

(C) A disc-shaped flange having a plurality of fixing holes into which the fixing tool is inserted at a circumferential interval is screwed into the end of the joint body, and the screwing position of the flange with respect to the end is changed. It is possible to fix to the work surface using a part of the fixing holes corresponding to the screwing position of the flange with respect to the joint body, among the plurality of fixing holes, and The remaining fixing holes not corresponding to the position is a construction aid used for the construction of the pipe joint not used for the fixing,
In the form of a sheet,
An insertion hole through which the tip of the end of the joint body can be inserted,
An exposed portion provided around the insertion hole,
Around the insertion hole, the exposed portion includes a shielding portion provided at another position in a circumferential direction,
The insertion hole is provided with a positioning unit that engages with the end of the joint body to determine a position around the axis of the end with respect to the joint body,
In the positioning state, the exposing part exposes the fixing hole used for the fixing, and the shielding part shields the fixing hole not used for the fixing.

  According to the above configuration, when fixing the joint body of the pipe joint to the construction surface, the insertion hole of the construction aid is engaged with the end of the joint body. At this time, the position of the end of the joint body around the axis in the construction aid is positioned as follows by the positioning part of the construction aid. That is, among the plurality of fixing holes formed in the flange of the joint body, the fixing holes used for the fixing are exposed by the exposed portions of the construction aid, and the fixing holes not used for the fixing are The positioning of the construction assisting tool is performed so as to be shielded by the shielding portion of the tool. Then, by inserting the fixing tool through the fixing hole exposed by the exposed portion of the construction aid, the flange of the joint body is fixed to the construction surface by the fixing tool. At this time, since the fixing holes not used for the fixing are shielded by the shielding portion of the construction auxiliary tool, it is possible to prevent the fixing tool from being inserted into the fixing holes by mistake.

(D) A disk-shaped flange having a fixing hole through which the fixing tool is inserted and a tool hole for hooking a tool at a circumferential interval is screwed into an end of the joint main body, and A threading aid for screwing the flange to the joint body through the tool hole, and a construction auxiliary tool used for construction of a pipe joint fixed to a construction surface through the fixing hole by the fixing tool,
In the form of a sheet,
An insertion hole through which the tip of the end of the joint body can be inserted,
An exposed portion provided around the insertion hole,
Around the insertion hole, the exposed portion includes a shielding portion provided at another position in a circumferential direction,
The insertion hole is provided with a positioning unit that engages with the end of the joint body to determine a position around the axis of the end with respect to the joint body,
In the positioning state, the exposing portion exposes the fixing hole, and the shielding portion shields the tool hole.

  According to the above configuration, when fixing the joint body of the pipe joint to the construction surface, the insertion hole of the construction aid is engaged with the end of the joint body. At this time, the position of the end of the joint body around the axis in the construction aid is positioned as follows by the positioning part of the construction aid. That is, the fixing hole formed in the flange of the joint body is exposed by the exposed portion of the construction aid, and the tool hole formed in the flange is shielded by the shield of the construction aid. The positioning of the construction aid is performed. Then, by inserting the fixing tool through the fixing hole exposed by the exposed portion of the construction aid, the flange of the joint body is fixed to the construction surface by the fixing tool. At this time, since the tool hole is shielded by the shield portion of the construction auxiliary tool, it is possible to prevent the fixing tool from being accidentally inserted into the tool hole.

(E) The construction aid for a pipe joint according to (C) or (D), wherein the shielding portion is formed of an adhesive seal.
According to the above configuration, the shielding portion is peeled off from the construction auxiliary tool positioned with respect to the end of the joint main body, and is adhered to the flange as an adhesive seal. The holes can remain shielded by the shield. In this way, by holding the fixing holes and the tool holes not used for the fixing in the flange in a state of being shielded by the shielding portion, the fixing holes and the tool holes not used for the fixing are erroneously fixed. The insertion of the tool is more effectively suppressed.

(F) a joint body inserted into a through hole provided in the wall;
A first flange provided on the joint body so as to be located on a first surface side of the wall;
A second flange attached to the joint body so as to be located on a second surface side of the wall;
With
A pipe joint in which the joint body is fixed to the wall by driving a screw from the second flange into the first flange through the wall,
A pipe joint, wherein at least one of an outer peripheral edge and an inner peripheral edge of the first flange is thicker than a portion between the outer peripheral edge and the inner peripheral edge.

DESCRIPTION OF SYMBOLS 1 ... Pipe joint, 2 ... joint main body, 2a ... end part, 2b ... end part, 3 ... pipe, 4 ... in core, 4a ... flange, 5 ... accommodation part, 6 ... step part, 7 ... O-ring, 8 ... O Ring, 9: Spacer, 10: Lock ring, 11: Lock ring, 12: Press ring, 13: O-ring, 14: Wall, 15: Through hole, 16: Female thread, 17: Male thread, 18: Nut, 18a ... Hole, 18b: female screw, 19: rotation prevention plate, 19a: hole, 19b: surface contact portion, 19c: protrusion, 20: rubber packing, 20a: hole, 21: rubber packing, 21a: hole, 22: sliding packing, 22a ... hole, 23 ... tightening ring, 23a ... hole, 23b ... female screw, 24 ... flat portion, 25 ... flat portion, 26 ... outer peripheral edge, 26a ... peripheral surface, 27 ... inner peripheral edge, 27a ... peripheral surface, 28 ... Fixing hole, 29: Tool hole, 30: Screw, DESCRIPTION OF SYMBOLS 1 ... Construction assistance tool, 32 ... Base sheet, 32a ... Peeling surface, 33 ... Label, 34 ... Insertion hole, 34a ... Line contact part, 35 ... Exposed part, 36 ... Shield part, 37 ... Ejection jig, 38 ... Main body , 40 ... chain, 41 ... tool, 42 ... body bar, 42a ... pin, 43 ... movable bar, 43a ... pin.

Claims (2)

A disk-shaped flange having a plurality of fixing holes into which the fixing tool is inserted at a circumferential interval is screwed to an end of the joint body, and a screwing position of the flange with respect to the end can be changed. Of the plurality of fixing holes, a part of the fixing holes corresponding to the screwing position of the flange with respect to the joint body is fixed to a work surface using a part of the fixing holes, and corresponds to the screwing position of the flange. The remaining fixing holes are not used in the fixing method of the pipe joint,
A specifying step of specifying each of the fixing hole used for the fixing and the fixing hole not used for the fixing,
A fixing step of inserting the fixing tool into the fixing hole used for the fixing and fixing the flange to the construction surface,
A shielding step of shielding the fixing hole not used for the fixing with a shielding member,
Confirming the fixation in a state where the fixing tool used for the fixation is exposed and the fixing hole not used for the fixation is shielded by the shielding member. A method for installing a pipe joint in which a flange having a fixing hole through which a fixing tool is inserted and a tool hole for hanging a tool is screwed into a joint body,
A screwing step of screwing the flange to the joint body through the tool hole by the tool,
A fixing step of fixing the flange to a construction surface via the fixing hole by the fixing tool,
A shielding step of shielding the tool hole with a shielding member,
A fixing confirmation step performed in a state where the fixing tool is exposed and the tool hole is shielded by the shielding member.