JP2011137490A - Water flow pipe joint - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a water flow pipe joint attachable to a bolt body and a wall surface, and freely attachable in accordance with the attachment place. <P>SOLUTION: The water flow pipe joint includes a joint body 2 to which a water flowing pipe 41 is connected, a mounting base 21 attached to an attached surface of a building, and a connection part 31 constituted by a pair of connection walls 36 connecting the joint body 2 and the mounting base 21 with a prescribed distance therebetween, and a bolt body insertion hole 32 is cylindrically formed in the connection part 31 along an axial direction of the bolt body to insert the bolt body thereto. The bolt body insertion hole 32 has an abutting part on which a nut screwed with the bolt body abuts on both opening parts. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  TECHNICAL FIELD The present invention relates to a water pipe joint that is attached to a rising portion or a wall surface from a floor under a floor of a building to which a water pipe is connected.

  Conventionally, water pipes that allow hot water to flow under the floor of the building or behind the walls are installed on the floor through joints, or pulled out to the wall surface to supply water to kitchen sinks, bathrooms, toilets, etc. To be done. The joint used here is usually attached to a bolt body erected under the floor via an attachment bracket or the like, or attached to a wall surface or a backside wall via an attachment base. As for the joint attached to the bolt body under the floor, the technique described in Patent Document 1 is disclosed. The joint of Patent Document 1 has a protruding flange provided on the flank, and a bolt body provided with a fixing mechanism is inserted into an insertion hole provided in the protruding flange, so that the mounting height of the joint can be adjusted. ing. Moreover, the thing of patent document 2, etc. are disclosed as a coupling attached to a wall surface etc. via a mounting base.

JP 2006-214502 A Design Registration No. 1174793

  However, conventionally, as described above, the joint described in Patent Document 1 is used for mounting to the bolt body under the floor, and the joint described in Patent Document 2 is used for mounting to the wall surface or the like. A dedicated joint was used depending on the mounting location. For example, under the floor, if the joist or the floor bundle that supports the joist overhangs or the floor bundle that supports the joist overhangs and it becomes necessary to install a joint near the joist etc., the joist etc. Since the bolt body cannot be erected at this location because it hinders, the joint used for mounting to the bolt body under the floor cannot be installed. Therefore, in this case, the joint for the wall is separately provided. This had to be attached to joists etc. As described above, conventionally, it is necessary to use two types of joints for attaching a bolt body under the floor and for attaching to a wall surface or the like depending on the attachment location.

  Then, this invention makes it a subject to provide the water-flow pipe joint which can be attached to a bolt body, can be attached also to a wall surface etc., and can be attached freely according to an attachment location.

  The water pipe joint according to claim 1 includes a joint main body to which the water pipe is connected, a mounting base attached to the mounting surface of the building, and a connecting portion that connects the joint main body and the mounting base with a predetermined distance therebetween. The connecting portion is provided with a bolt body insertion hole through which the bolt body is inserted.

  Here, the water coupling pipe is connected to one side of the joint body, and another water pipe coupling different from the joint of the present invention is connected to the other side. Examples of the mounting surface of the building include a wall surface such as a partition wall and a side surface of a joist under the floor. The separation distance between the joint main body and the mounting base is an interval at which connection work can be performed by turning at least a tool or hand to the rear of the water pipe.

  In the water pipe fitting according to claim 2, in particular, the bolt body insertion hole is formed in a cylindrical shape along the axial direction of the bolt body, and a contact portion with which a nut that engages with the bolt body abuts is formed in both openings. ing.

  In the water pipe joint according to the third aspect of the present invention, in particular, an anti-rotation portion that abuts the side surface of the nut and restricts the rotation of the nut is provided outside the opening on one side of the bolt body insertion hole.

  Since the invention of claim 1 is provided with a mounting base and a bolt body insertion hole to be attached to the surface to be attached, it can be attached to the bolt body and can be directly attached to a wall surface or the like via the mounting base. Since it can be used for various types of mounting locations, there is no need to use different joints depending on the mounting location. Thereby, for example, in the piping of a water pipe under the floor of a building, the joint can be attached to a place separated from a joist or large pull, etc., and can also be attached in the vicinity of a joist or large pull, etc. It is convenient because the joint can be freely attached regardless of the choice.

  In addition, since the bolt body insertion hole is provided in the connecting portion between the joint body and the mounting base, in the joint with the mounting base described in the conventional Patent Document 2, simply between the joint body and the mounting base. It is possible to effectively utilize the connecting portion that only forms the work space. As a result, the bolt body insertion holes necessary for mounting on the bolt body can be stored in a clean state in the connecting portion, and a protrusion is provided by separately providing a mounting portion on the bolt body on the side of the joint body. Since it does not occur, the entire water pipe joint is gathered compactly, and the handling workability of the joint is improved.

  In the invention of claim 2, since the bolt body insertion hole is formed in a cylindrical shape, the joint is guided in a fixed direction by inserting the bolt body along the axial direction of the cylindrical connecting portion, It is stably held in a fixed posture without tilting with respect to the bolt body.

  According to the invention of claim 3, since the nut rotation preventing portion is provided outside the opening on one side of the bolt body insertion hole, the pair of nuts are screwed to the bolt body, and the joint is attached to the bolt body. When the nut is tightened from both sides of the bolt body insertion hole after being positioned at the predetermined height, it is not necessary to hold the nut on the side that comes into contact with the rotation stopper, and only tighten the nut on the other side. As a result, the fitting workability of the joint is improved.

It is a perspective view which shows the water flow pipe coupling of embodiment of this invention. 1 shows the water pipe fitting of FIG. 1, (a) is a plan view, (b) is a left side view, (c) is a front view, and (d) is a rear view. It is sectional drawing by the AA cutting line of FIG.2 (c). It is a perspective view which shows the state before connecting a water pipe to the water pipe joint of FIG. It is a perspective view which shows the state after connecting a water pipe to the water pipe joint of FIG. It is a side view which shows the method of attaching the water pipe joint of FIG. 1 to a bolt body. It is sectional drawing which shows the state after attaching the water pipe coupling of FIG. 1 to a bolt body, and connecting a water pipe. It is sectional drawing which shows the state after attaching the water pipe coupling of FIG. 1 to joist and connecting the water pipe. It is a top view which shows the modification of the connection part of Fig.2 (a). The modification of the mounting base of FIG. 1 is shown, (a) is a left view, (b) is a rear view.

  Hereinafter, a water pipe coupling according to an embodiment of the present invention will be described with reference to the drawings. In addition, in the attachment of this embodiment, the case where it attaches to the location which raises the water flow pipe piped under the floor on the floor is demonstrated. In the following description, the vertical direction means the same direction as the vertical direction in FIG.

  1 to 5, a water pipe joint 1 includes a joint main body 2 to which a water pipe 41 is connected, a mounting base 21 that is attached to a joist or a wall that is a mounting surface of a building, a joint main body 2, and a mounting base 21. And a connecting portion 31 composed of a pair of connecting walls 36, 36 that are connected to each other with a predetermined distance therebetween. The connecting portion 31 is provided with a bolt body insertion hole 32 through which the bolt body 51 is inserted. Hereinafter, each component will be described in detail.

  First, the entire joint body 2 is formed in a substantially cylindrical shape, and is formed with a water pipe receiving port 3 that opens downward at the lower end portion and into which the water pipe 41 is inserted and connected, and opens upward at the upper end portion. A connection port 4 to which another water pipe connection tool (not shown) is connected is formed. As shown in FIG. 3, the main part of the joint body 2 includes a substantially cylindrical inner cylinder portion 5 made of a resin material, and a substantially cylindrical outer cylinder portion 6 that is also made of a resin material and covers the outside of the inner cylinder portion 5. And a connecting fitting 7 made of a metal material and formed in a nut shape and embedded in the upper portion of the inner cylinder portion 5 is integrally formed. The resin part is formed in two layers of the inner cylinder part 5 and the outer cylinder part 6 because the inner cylinder part 5 is formed of a material suitable for flowing water such as hot water and the outer cylinder part 6 is connected and fixed. This is because it is made of a suitable material having high strength. The main part of the joint body 2 can be integrally formed by insert molding.

  An accommodation space 8 in which the water pipe 41 can be inserted and accommodated is formed inside the joint body 2, and the water pipe 41 inserted from the water pipe receiving port 3 hits the step 9 provided at the upper part inside and stops. It is supposed to be. A water stop ring 10 made of an O-ring is fitted in a position slightly spaced downward from the step portion 9, and the water stop ring 10 is held at a fixed position by a water stop ring holder 11. Further below the water-stop ring holder 11, a pin insertion hole 12 that penetrates inward and outward and through which an insertion portion 17 b of a retaining pin 17 described later is inserted from the outside is provided. The pin insertion holes 12 are provided at the same height of the outer cylindrical portion 6 at a total of four locations, two on each of the left and right sides in FIG. 3, and the two left and right pin insertion holes 12 face each other. That is, in each of the left and right sides, the straight insertion portion 17b of the retaining pin 17 is inserted into one pin insertion hole 12, passes through the peripheral wall of the outer cylinder portion 6, reaches the internal space of the joint body 2, and then the joint body 2 In the inner space, the circular chord portion is passed near the periphery and is inserted through the other pin insertion hole 12 facing again.

  On the other hand, the outside of the joint body 2 is formed on a cylindrical outer peripheral surface as a whole, but a part of the upper part is formed on a hexagonal nut-shaped outer wall surface 13 so that it can be held by a tool such as a wrench. Has been. Confirmation windows 14 for confirming that the water pipe 41 has been inserted up to a predetermined position are provided at two positions opposite to each other at almost the intermediate position in the height direction of the joint body 2. A pin holding projection 15 that engages with and holds the intermediate portion 17a of the retaining pin 17 and prevents the retaining pin 17 from detaching outward is provided at a position slightly spaced directly below each confirmation window 14. Is provided. The lower surface of the pin holding projection 15 is provided with a concave portion 15a that is recessed upward in a substantially arc shape, and the intermediate portion 17a of the retaining pin 17 is fitted into and engaged therewith. Further, boss-like projections 16 are formed to project at four locations where the pin insertion holes 12 are provided, and the flat surface of the tip of the projection 16 is provided with the pin holding projection 15 in the outer cylinder 6. It is in a position slightly retracted in the direction of the string from the peripheral wall surface at the place where it is located.

  Here, outside the joint body 2, the outer wall surface 13 a of the side portion on the side of the connecting portion 31 shown in FIGS. 2 (b) and (d) among the six sides of the hexagonal nut shape is the bolt body insertion hole 32. A side surface of an upper nut 54, which will be described later, is positioned outside the upper opening 34 and can be brought into contact with the side surface of the upper nut 54. It is also a detent portion 13b that regulates the above.

  Next, the mounting base 21 is formed in a substantially rectangular flat plate shape, and is provided in the vertical direction parallel to the central axis of the joint body 2 at a predetermined distance from the joint body 2 via the connecting portion 31. The same resin material as that of the outer cylinder portion 6 of the main body 2 is used, and is formed by integral molding together with the joint main body 2 and the connecting portion 31. Screw insertion holes 22 through which screws for screw fixing to joists and wall surfaces are provided at four locations on the four corners of the mounting base 21. The length of the mounting base 21 in the vertical direction is smaller than the total length of the joint body 2. Further, the horizontal length of the mounting base 21 is formed to be larger than the outer diameter of the joint body 2, and each screw insertion hole 22 is provided at a position projecting left and right outward from the joint body 2, and at least the joint body 2. The screw can be tightened by extending the tip of a tool such as a screwdriver from the front front of the screw. Furthermore, a triangular positioning projection 23 is provided at the middle part of the left and right sides of the mounting base 21 as a mark when the water pipe fitting 1 is mounted in a vertical state.

  As shown in FIG. 2 (a), the connecting portion 31 that connects the joint body 2 and the mounting base 21 is formed by a pair of left and right arc-shaped connecting walls 36, 36, and is formed in a cylindrical shape along the vertical direction. Has been. As shown in FIG. 2 (a), the pair of left and right connecting walls 36, 36 are connected at two points on the mounting base 21 side at the locations of A and A ', respectively, and the joint body 2 side. In FIG. 5, all are connected at one point converged and connected at one point, that is, a total of three points are connected. A bolt body insertion hole 32 through which the bolt body 51 is inserted in the axial direction is formed between the pair of connection walls 36, 36, more precisely, between the pair of connection walls 36, 36 and the mounting base 21. . The inner wall surface of the bolt body insertion hole 32 is formed as a smooth surface on which no screw is formed. The inner diameter of the bolt body insertion hole 32 is slightly larger than the outer diameter of the bolt body 51. Note that a part of the bolt body insertion hole 32 may protrude to the mounting base 21.

  The connecting portion 31 connects the joint body 2 and the mounting base 21 with a predetermined distance therebetween, and the separated portion forms a work space necessary for inserting a tool or a hand when the water pipe 41 is connected. ing. Here, the said predetermined distance is a space | interval required in order to perform a connection operation | work by turning a tool or a hand to the back of a water tube at the time of performing the connection operation | work of the water flow pipe 41 at least. Reinforcing ribs 33 are formed in the intermediate portion of the connecting portion 31 in the height direction. The reinforcing ribs 33 may be formed on the upper and lower ends, and the installation position and the number of installations are not particularly limited.

  Openings at both upper and lower ends of the bolt body insertion hole 32 of the connecting portion 31 are formed as flat surfaces, and serve as contact portions with which the bottom surfaces of the nuts that are screwed into the bolt bodies 51 come into contact. Here, in order to bring the bottom surface of the nut into contact with the contact portion, the upper and lower ends of the connecting portion 31 are formed to protrude in the vertical direction at the same height as or higher than the mounting base 21 in the height direction.

  Next, as shown in FIG. 4, the retaining pin 17 inserted through the pin insertion hole 12 of the joint body 2 is made of a metal round bar, and is bent into a U shape as a whole, It is formed with a pair of insertion parts 17b on both sides. The retaining pin 17 reaches the inside of the joint body 2 after the both insertion parts 17b are simultaneously inserted into the pin insertion holes 12 of the pair of left and right projections 16 from the side of the joint body 2, and further, the pin insertion on the opposite side is performed. It is inserted into the hole 12.

  On the other hand, the water pipe 41 inserted into and connected to the water pipe receptacle 3 of the water pipe joint 1 is a resin pipe such as a crosslinked polyethylene pipe or a polybutene pipe, and has flexibility and is piped under the floor or the like. Hot water and the like are circulated in the water and used as a water supply pipe, a hot water supply pipe, and the like.

  The bolt body 51 has a male screw formed on the outer surface at the full length or in a partial length in the axial direction. For example, the lower end of the bolt body 51 is fixed with a fixed washer or the like under the floor of the building and is erected on the foundation floor surface. .

Next, the operation | work which connects the water flow pipe 41 to the water flow pipe coupling 1 comprised in this way is demonstrated based on FIG.4 and FIG.5.
FIG. 4 shows a state before the water pipe 41 is connected, and the connection ring 42 shown in FIGS. 4 and 7 is fitted in advance at a position spaced a predetermined distance from the tip of the water pipe 41. Here, as shown in FIG. 7, the connection ring 42 has three lock rings 43 made of metal having hooking claws 44 incorporated in the upper and lower three stages on the inner wall surface. The hooking claw 44 faces obliquely upward in FIG. Accordingly, when the connection ring 42 is forcibly fitted from the tip of the water pipe 41 to the outer peripheral surface thereof, the hooking claws 44 of the lock ring 43 are caught by the outer peripheral surface of the water pipe 41 so that the water pipe 41 is connected. It is prevented from coming off from the ring 42.

  In this state, the water pipe 41 is inserted as it is from the water pipe port 3 of the water pipe joint 1 and pushed in until the tip comes into contact with the step 9 inside the water pipe joint 1. It can be confirmed through the confirmation window 14 whether the tip of the water flow pipe 41 is inserted up to the stepped portion 9. Next, the retaining pin 17 is inserted into the pin insertion hole 12 of the pair of left and right protrusions 16 from the side of the water pipe joint 1 to penetrate the outer cylinder portion 6. Then, the retaining pin 17 is inserted into the gap S between the inner peripheral surface of the outer tube portion 6 of the water pipe joint 1 and the outer peripheral surface of the water pipe 41 shown in FIG. It reaches the pin insertion hole 12 and is inserted into the wall surface on the opposite side of the outer cylinder portion 6. In this way, when the intermediate portion 17a of the retaining pin 17 is pushed in until it comes into contact with the peripheral wall surface of the outer cylinder portion 6, the intermediate portion 17a elastically climbs over the protruding end of the pin holding projection 15 from its lower surface side. 15 is inserted into the concave portion 15a that is recessed in an arc shape on the inner side, and the insertion of the retaining pin 17 is completed. Thereby, the connection of the water flow pipe 41 is completed. In this connection, the water pipe 41 can be connected to the water pipe joint 1 from below by one touch.

  After the connection of the water pipe 41 is completed, as shown in FIG. 5, the retaining pin 17 is inserted into the pin insertion hole 12 and the intermediate portion 17 a is held in the recess 15 a of the pin holding protrusion 15, and the outer cylinder portion 6 is prevented from coming off. Then, as shown in FIG. 7, the retaining pin 17 is inserted into the water pipe coupling 1 so that the connection ring 42 is prevented from moving downward by being supported by this, and the water pipe 41 is connected to the water pipe. Withdrawing downward from the joint 1 is prevented. Further, in this state, the water stop ring 10 is in close contact with both the outer peripheral surface of the water pipe 41 and the inner peripheral surface of the inner cylinder portion 5, and hot water or the like in the water pipe 41 is in contact with the outer peripheral surface of the water pipe 41. Leakage to the outside through the space between the inner peripheral surface of the cylindrical portion 5 is prevented. In FIG. 4, the retaining pin 17 is inserted into the pin insertion hole 12 of the protrusion 16 from the right direction, but may be inserted into the pin insertion hole 12 of the protrusion 16 from the left side opposite to 180 degrees.

  Next, attachment of the water pipe fitting 1 will be described. Here, the case where the water-flow pipe joint 1 is attached to the start-up location of the water-flow pipe 41 piped under the floor will be described. First, a general case where the water pipe fitting 1 is attached to the bolt body 51 erected on the foundation floor 53 at a position separated from the joist under the floor will be described with reference to FIGS. 6 and 7.

  As shown in FIG. 7, the bolt body 51 is erected in advance at a predetermined position on the foundation floor surface 53 under the floor via a fixed washer 52. In this state, first, the lower nut 55 is screwed onto the bolt body 51 as shown in FIG. At this time, the screwing height of the lower nut 55 is set to a position slightly lower than the screwing position after the attachment of the water pipe fitting 1 is finally completed. Although not shown, a washer may be interposed on the upper surface of the lower nut 55 as necessary. Next, as shown in FIG. 6 (b), the water pipe fitting 1 is fitted from above the bolt body 51, the bolt body 51 is inserted into the bolt body insertion hole 32 of the connecting portion 31, and the water pipe fitting 1 is inserted. Once placed on the lower nut 55. At this time, since the bolt body insertion hole 32 is formed on a simple smooth surface with no screw formed on the inner wall surface, the water pipe fitting 1 may be simply moved downward. Subsequently, as shown in FIG. 6 (c), the upper nut 54 is screwed onto the bolt body 51.

  Next, as shown in FIGS. 2 (b) and 2 (d), an outer wall surface 13 a serving as a hexagonal nut-shaped detent 13 b is provided on the upper portion of the outer cylinder portion 6 of the water pipe fitting 1. As shown in FIG. 6 (d), the water pipe fitting 1 is pushed straight up as it is, and the upper opening 34 of the bolt body insertion hole 32 is brought into contact with the bottom surface of the upper nut 54, and then the upper nut 54. And the outer wall surface 13a which becomes the detent | locking part 13b of the outer cylinder part 6 are engaged in the state which opposes. Subsequently, in this engaged state, the upper nut 54 and the water passage fitting 1 are moved up and down around the bolt body 51 as an axis, and when the water passage fitting 1 reaches the optimum height. Stops vertical movement. Accordingly, the upper nut 54 is also positioned at a height corresponding to the mounting height of the water pipe fitting 1.

  Thereafter, as shown in FIG. 6 (e), the lower nut 55 is rotated and moved upward, and the upper surface thereof is brought into contact with the lower opening 35 of the bolt body insertion hole 32 so that the upper nut 54 is moved. Then, the connecting portion 31 is sandwiched and tightened from above and below. At this time, since the rotation preventing portion is not formed at the lower portion of the outer tube portion 6 of the water pipe fitting 1, the lower nut 55 rotates the lower nut 55 without any trouble while opening the lower portion of the bolt body insertion hole 32. It can be screwed until it abuts on 35. Thus, the attachment of the water pipe fitting 1 to the bolt body 51 is completed at a predetermined height. Thereafter, the water pipe 41 fitted with the connection ring 42 may be inserted and connected to the water pipe receptacle 3 from below the water pipe joint 1 in the manner described above. At this time, there is a sufficient space behind the bolt body 51, and a hand can be turned to this space portion, so that no special trouble occurs in the operation of connecting the water pipe 41. FIG. 7 shows a state in which the attachment of the water pipe joint 1 to the bolt body 51 is completed and the connection of the water pipe 41 is completed. Thereafter, another water pipe joint is connected to the connection port 4 at the upper end of the water pipe joint 1 and is raised on the floor to be washed in the kitchen and connected to a bathroom, toilet, and the like. Thereby, water and hot water can be supplied to the kitchen sink and the like thereafter.

  In the above description, the water pipe 41 is connected to the water pipe joint 1 after the water pipe joint 1 is first attached and fixed to the bolt body 51, but after the water pipe 41 is connected to the water pipe joint 1 first. The water pipe fitting 1 can also be attached and fixed to the bolt body 51. In order to position the water conduit 1 at the optimum height of the bolt body 51, the operation shown in FIG. 6 (d) may be performed using a scale or the like.

  Next, the case where the water pipe fitting 1 is attached to the joist under the floor will be described with reference to FIG. The water pipe fitting 1 is attached to the joist when the bolt body 51 erected on the foundation floor surface 53 is in the vicinity of the joist and it is difficult or impossible to erect at this location. 1 is directly attached to joists.

  In order to attach the water pipe fitting 1 to the joist 56, first, a horizontal line serving as a reference for horizontal attachment is marked or drawn on the surface of the joist 56 where necessary. Next, the positioning projections 23 provided on both sides of the mounting base 21 are aligned with the horizontal line. Next, screws 57 are inserted into the screw insertion holes 22 at the four corners using a screwdriver or the like from the front front of the water pipe fitting 1 and screwed to the mounting surface of the joist 56. When the water pipe joint 1 is attached and fixed in this manner, the water pipe 41 is connected to the water pipe joint 1. At this time, a gap is formed between the water pipe 41 and the mounting base 21 and the joist 56 so as to form the connecting portion 31, and there is a margin behind the water pipe 41. Can be turned. For this reason, since the water pipe 41 can also be grasped by hand, the connection work to the water pipe joint 1 can be easily performed with good workability. In the above description, the water pipe 41 is connected after the water pipe joint 1 is attached to the joist 56. However, the water pipe 41 may be connected to the water pipe joint 1 before the water pipe joint 1 is attached to the joist 56. .

Next, the operation of the water pipe fitting 1 of this embodiment will be described.
Since the water pipe fitting 1 includes the mounting base 21 and the bolt body insertion hole 32, it can be attached to the bolt body 51 and can also be directly attached to the mounting surface of the joist 56 via the mounting base 21. Can be used for two types of mounting locations. Thereby, in piping of the water flow pipe 41 under the floor of a building, the water flow pipe joint 1 can be attached to a place separated from the joist 56 using one water pipe joint 1, and is attached in the vicinity of the joist 56. It is also convenient because it can be installed freely regardless of the attachment location.

  In addition, since the bolt body insertion hole 32 is provided in the connecting portion 31 between the joint main body 2 and the mounting base 21, in the joint with the mounting base described in the conventional Patent Document 2, the joint main body 2 and the mounting base 21 are simply attached. It is possible to effectively utilize a connecting portion that merely forms a work space for inserting a hand when connecting the water pipe to the joint with the pedestal 21. As a result, the bolt body insertion holes 32 are kept in a state of being clearly organized in the connecting portion 31. Then, if a new attachment portion to the bolt body 51 is newly added to the joint body 2, a protrusion or the like due to the attachment portion is generated on the side of the joint body 2 or the like. Since the water pipe fitting 1 is formed with the bolt body insertion hole 32 using the existing connecting part 31 without providing such an additional portion, the water pipe fitting 1 does not cause a bulge or the like. The whole is compact and the workability of the water pipe fitting 1 is improved.

  In addition, since the connecting portion 31 is composed of a pair of connecting walls 36, 36, even if it has the same cross-sectional area, its structural strength and rigidity are greater than those formed in a flat plate shape. The bolt body insertion hole 32 is not easily deformed.

  Further, since the bolt body insertion hole 32 is formed in a cylindrical shape, the joint is guided in a fixed direction and tilted by inserting the bolt body 51 into the cylindrical connecting portion 31 along the axial direction thereof. Without being stable, it is stably held in a constant vertical posture.

  Further, a detent portion 13 b made of a hexagonal nut-shaped outer wall surface 13 a of the outer cylinder portion 6 is provided outside the opening 34 on the upper side of the bolt body insertion hole 32. Therefore, when the upper nut 54 and the lower nut 55 are screwed onto the bolt body 51 and are tightened with the connecting portion 31 sandwiched from both sides of the bolt body insertion hole 32, the upper nut 54 contacts the rotation preventing portion 13b. Since rotation is prevented by contact, it is not necessary to hold it during the tightening operation. Thus, after the water pipe fitting 1 and the upper nut 54 are positioned at the predetermined height of the bolt body 51, only the lower nut 55 needs to be tightened. improves.

  By the way, as shown in FIG. 2 (a), the pair of connecting walls 36, 36 of the connecting portion 31 of the above embodiment are connected to the joint body 2 and the mounting base 21 at a total of three locations of A, B 'and B. As shown in FIG. 9 (a), both the connecting walls 36 are connected to the joint body 2 and the mounting base 21 at four locations A, B ', B, and B'. A total of four points may be connected. Alternatively, as shown in FIG. 9B, both ends of the pair of connecting walls 36, 36 converge to one place, and the joint body 2 and the mounting base 21 are It is good also as a total two-point connection connected by these two places.

  Moreover, although the mounting base 21 of the said embodiment is formed in the substantially rectangular flat plate shape, when implementing this invention, it is not restricted to this, For example, as shown in FIG. The protruding piece 24 may be formed in an H shape. In this case, as a matter of course, the screw insertion hole 22 provided at the tip of each projection piece 24 is at least a joint body that can be screwed using a tool such as a screwdriver from the front front of the joint body 2. It is necessary to be provided at a position protruding outward from 2.

  In addition, in the above-described embodiment, the rotation preventing portion 13b of the outer cylinder portion 6 that prevents the rotation by the abutment of the side surface of the nut is provided on the upper portion of the outer cylinder portion 6, and the upper nut 54 becomes the rotation stop. However, the present invention is not limited to this, and the rotation preventing portion 13b may be provided at the lower portion of the outer cylinder portion 6 and the lower nut 55 may be prevented from rotating.

  Furthermore, although the inner wall surface of the bolt body insertion hole 32 of the above-described embodiment is formed as a smooth surface, a female screw that engages with the male screw of the bolt body 51 is formed to reach the entire inner wall surface or part of its length. It is also good. In this case, either the upper or lower nut attached to both ends of the bolt body insertion hole 32 can be omitted.

  And although the bolt body insertion hole 32 of the said embodiment is formed in the cylindrical shape, it is not limited to this, It does not prevent making it into polygonal cylinder shapes, such as a square cylinder shape.

  The water pipe 41 connected to the water pipe joint 1 can be connected with one touch using the connection ring 42 and the retaining pin 17 shown in FIG. 4 and FIG. 7, but the water pipe joint 1 and the water pipe The connection structure with 41 is not limited to this. For example, although not shown, the connecting portion of the water pipe joint 1 protrudes in a cylindrical shape, and after the water pipe 41 is externally fitted thereto, the water pipe 41 is slidably fitted to the outer peripheral surface of the water pipe 41 in advance. The cylindrical cylindrical tightening ring is moved to the connection portion side of the water pipe joint 1 and press-fitted into the outer peripheral surface of the water pipe 41, and the water pipe 41 is connected to the cylindrical connection portion of the water pipe joint 1 and the tightening ring. It may be of the type that is connected by pressing from both the inner and outer surfaces. Alternatively, the connecting portion of the water pipe joint 1 protrudes in a cylindrical shape, and after passing the cap nut and the split ring on the outer peripheral surface of the water pipe 41, the water pipe 41 is fitted on the cylindrical connection portion. The split ring may be of a type that is pressed against the connecting portion side of the water pipe joint 1 and further connected by turning and tightening the cap nut from the outside. The water pipe fitting 1 of the present invention can be similarly applied to the connection structure as described above.

  Moreover, although the water pipe fitting 1 of this invention has shown what the mounting base 21 attaches to the joist 56 under the floor, it can also be applied to attachment to wall surfaces, such as an underfloor large pull and a partition wall. . Further, the bolt body 51 is not limited to the one installed on the foundation floor surface 53 under the floor, but can be similarly applied to a case where the bolt body 51 is installed in another location.

DESCRIPTION OF SYMBOLS 1 Water pipe coupling 2 Joint main body 13b Non-rotating part 21 Mounting base 31 Connecting part 32 Bolt body insertion hole 34 Upper opening part (contact part)
35 Lower opening (contact part)
36 connecting wall 41 water pipe 51 bolt body 54 upper nut 55 lower nut 56 joist

Claims (3)

A joint body to which a water pipe is connected;
A mounting pedestal mounted on the mounting surface of the building;
A coupling portion that couples the joint body and the mounting base with a predetermined distance apart;
A water pipe fitting having a bolt body insertion hole through which the bolt body is inserted in the connecting portion.   The bolt body insertion hole is formed in a cylindrical shape along the axial direction of the bolt body, and a contact portion with which a nut that engages with the bolt body contacts is formed in both openings. Item 4. The water pipe joint according to item 1.   The rotation stop part which contact | abuts the side surface of the said nut and controls rotation of this nut is provided in the outer side of the opening part of the said bolt body penetration hole. Water pipe fittings.

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