JP2006265834A - Pipe joint - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pipe joint which can be easily mounted, even if a sufficient space is not secured in the rear of a mounting surface for fixing a joint body. <P>SOLUTION: This pipe joint 1 comprises the joint body 10, which is connected to a terminal 56 of pipe 54 and fixed to the mounting surface 2 so as to connect the terminal 56 of the pipe 54, routed to the backside of the mounting surface 2, and a hydrant body 8 together; and a cylindrical connecting member 30, into which a hydrant is screwed and which is turnably mounted in the joint body 10. A deepest-end opening 35 of the connecting member 30 is provided with a regulating protrusion 46 for regulating turning, which is provided protrusively at the deepest-end side, with respect to the end surface of the opening. An abutting part 25, to which the regulating protrusion 46 of the connecting member 30 can be locked, is provided on the inner peripheral surface of the joint body 10. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a pipe joint that connects a joint body connected to a terminal of a pipe such as a water supply pipe or a hot water supply pipe, and a water tap.

  2. Description of the Related Art Conventionally, various types of piping joints are used for connecting a pipe routed to the back side of a mounting surface such as a wall surface and a water tap installed on the back side of the mounting surface. When pipes must be connected to two connections on the water side and hot water side, such as a hot and cold water mixing faucet, two pipe joints fixed to the mounting surface and two connections on the faucet body Using a crank joint or the like, it is necessary to accurately align and connect the connection port of the crank joint and the connection part of the faucet body. As a pipe joint that can easily perform such alignment, for example, as shown in FIG. 8, a joint body 96 that is connected to the end of the pipe and is fixed to the mounting surface 2 and a water tap are screwed in There is known one provided with a cylindrical connection member 97 that is rotatably mounted in the joint body 96. In this pipe joint 98, a sealing member 38 such as an O-ring is mounted on the outer peripheral surface of the connection member 97 that is rotatably mounted in the joint body 96, so that the connection member 97 and the joint body 96 are watertight. It has been. On the other hand, a bent crank joint 60 is screwed into the other end of the connection member 97.

  When mounting, first, when the crank joint 60 is screwed into the connection member 97, the restricting projection 99 projecting from the outer peripheral surface of the connection member 97 is protruded from the inner peripheral surface of the joint body 96. The crank joint 60 is screwed into the connecting member 97 while being restricted by the contact portion 100 to stop the rotation. When the crank joint 60 is further screwed in, the crank joint 60 is screwed to the back end with respect to the connecting member 97. In this state, proper positioning in the screwing direction of the crank joint 60 with respect to the joint body 96 is performed. Next, in order to align the distance between the connection ports 66 of the two crank joints 60 with the distance between the connection parts of the water faucet body, one or both of the crank joints 60 are rotated in the opposite direction to the screwing, and Adjust the position. At this time, the connecting member 97 that has been restricted from rotating together with the crank joint 60 by the contact portion 100 of the joint body 96 until then has been rotated in the opposite direction, and the contact portion 100 is locked again. Until the crank joint 60 is rotated. Therefore, during this rotation, the screwing amount of the crank joint 60 with respect to the connection member 97 does not change. In this way, the amount of protrusion of the crank joint 60 from the joint body 96, that is, the amount of protrusion of the crank joint 60 from the mounting surface 2 is kept at a predetermined value while the positioning of the crank joint 60 in the screwing direction with respect to the connecting member 97 is kept constant. Therefore, the connection work between the pipe and the water faucet body can be facilitated (see Patent Document 1).

Japanese Patent Laying-Open No. 2004-360183 (FIG. 1)

  However, since the opening 101 on the joint body 96 side of the connection member 97 protrudes into the joint body 96 in order to allow the hot water and water flowing from the pipe to sufficiently flow into the connection member 97, this opening It is necessary to secure a flow path by providing a certain space in the joint main body 96 at the rear from 101. Therefore, the joint main body 96 must largely protrude rearward from the flange portion 16. Therefore, when there is not enough space between the mounting body 2 and the rear body, it is difficult to mount the joint body 96.

  The present invention eliminates the problems of the conventional pipe joint described above, and a pipe joint that can be easily installed even when there is not enough space behind the mounting surface to which the joint body is fixed. The purpose is to provide.

  In order to solve the above problems, means taken by the present invention will be described below. The pipe joint of the present invention is connected to the end of the pipe and connected to the pipe connected to the back side of the mounting surface such as a wall surface and a faucet installed on the front side of the mounting surface. A pipe joint comprising: a joint body fixed to a surface; and a cylindrical connection member into which the water faucet is screwed and rotatably mounted in the joint body, the back end side of the connection member The opening is provided with a restricting protrusion for restricting rotation that protrudes from the end face of the opening toward the back end side, and the restricting protrusion of the connecting member is provided on the inner peripheral surface of the joint body. It is a pipe joint (Claim 1) characterized in that a latchable contact portion is provided.

  In the pipe joint of the present invention, the restricting protrusion that restricts the rotation of the connecting member is provided in the far end side opening of the connecting member so as to protrude further from the opening end face. Therefore, in a region behind the back end side opening, that is, in a region where hot water / water flows from the joint body into the connecting member, a space other than the restricting projection can be used as a hot water / water flow path. Therefore, in the pipe joint of the present invention, the depth can be shortened by the length of the restricting protrusion as compared with the conventional pipe joint in which the restricting protrusion is directly provided on the outer peripheral surface of the connecting member. . In addition, as with conventional pipe joints, the connection member that is rotatably mounted in the joint body can be rotated without changing the positioning of the connection member in the axial direction. A faucet having two connecting parts such as a faucet can be easily aligned with a pipe joint.

  As described above, the portion where the “regulation protrusion” is provided is the opening on the back end side of the connection member, and protrudes on the back end side from the end surface of the opening. Therefore, in addition to being provided protruding from the end face of the opening as it is, it may be formed to protrude from the outer peripheral surface of the connection part in the vicinity of the opening so as to protrude from the back end side of the connection member. . In addition, the “water tap” screwed into the connection member according to the present invention is intended to include a crank joint connected to the water tap in addition to the water tap itself. Further, there are no particular limitations other than those described above on the portion and shape where the restricting protrusion and the abutting piece are provided, and it is intended to include all that can restrict the rotation of the connecting member.

  Further, in the above-described pipe joint, the pipe connecting portion of the joint main body may have a flat cross-sectional shape (Claim 2). By forming in this way, even if the space on the back side of the mounting surface is narrow, It can be set as a pipe joint which can ensure sufficient circulation of hot water and water.

  Further, in the above-described piping joint, a flange portion for locking the joint body to the back side of the mounting surface may be integrated with the joint body (Claim 3). By integrating the flange portion in this way, the manufacturing cost can be reduced by integrally forming the joint body and the flange portion. Further, since the fixing to the mounting surface can be performed by the integrated flange portion, the fixing of the pipe joint to the mounting surface can be further strengthened.

  In the present invention, as described above, the rear end opening of the connecting member is provided with the restricting protrusion for restricting the rotation, which protrudes from the end of the opening to the back end side. In the area behind the opening, that is, in the area where hot water flows into the connection member from the joint body, the space other than the restricting projection can be used as a hot water / water flow path, so the depth of the pipe joint can be shortened. Even if there is not enough space behind the mounting surface to which the joint body is fixed, it can be easily mounted. In particular, in the pipe joint according to claim 3, by integrating the flange part locked to the mounting surface with the joint body, the manufacturing cost of the pipe joint is reduced and the pipe joint is firmly fixed to the mounting surface. Can do.

  Next, an embodiment of the pipe joint of the present invention will be described in detail with reference to the drawings. As shown in FIG.1 and FIG.2, the piping joint 1 of this invention was mounted | worn with the coupling main body 10 fixed to the attachment surface 2 arrange | positioned at the front surface of housing 50, such as a bathroom, and the coupling main body 10. As shown in FIG. A connecting member 30 is provided, and a crank joint 60 is screwed and fixed to the connecting member 30.

  A mounting hole 3 is formed in the mounting surface 2, and a joint body 10 is inserted and fixed in the mounting hole 3. The joint body 10 has an overall shape that is bent in a substantially L shape. One end of the joint body 10 is connected to the terminal 56 of the pipe 54, and the other end is connected to the pipe connection portion 12. A crank joint connecting portion 14 that is bent at a substantially right angle from the pipe connecting portion 12 and to which the crank joint 60 is connected is provided. A male thread is engraved on the outer peripheral surface at the tip of the crank joint connecting portion 14. On the outer peripheral surface near the center of the crank joint connection portion 14, a flange portion 16 that is in contact with the periphery of the attachment hole 3 on the back side of the attachment surface 2 through the seat packing 4 is provided integrally with the crank joint connection portion 14. A screw 7 is screwed into the mounting surface 2 from an insertion hole 17 drilled in a portion above the collar portion 16. Then, the joint body 10 is attached to the attachment surface by the nut 5 and the flange portion 16 which are screwed to the male screw from the front surface side of the attachment surface 2 through the seat packing 4 and the flange portion 16 cooperates. 2 is fixed. Unlike the present embodiment, the flange body 16 may be separate from the joint body 10 and the joint body 10 may be fixed to the mounting surface 2, but more firmly fixed to the mounting surface 2. Therefore, in order to simplify the fixing operation of the pipe joint 1, it is preferable to form the flange portion 16 integrally with the joint body 10. Moreover, the manufacturing cost of the pipe joint 1 can also be reduced by integrally forming the joint body 10 and the flange portion 16 in advance.

  Further, a screw 7 inserted into the fixing hole 6 and screwed into the mounting surface 2 is attached to the nut 5 screwed into the male screw of the crank joint connecting portion 14. This screw 7 is provided so that the nut 5 screwed to the crank joint connecting portion 14 is not loosened by a stress transmitted by the operation of the operation handle 9 of the water faucet body 8 or water hammer. Is fixed to the mounting surface 2 more firmly.

  As shown in FIG. 3, the pipe connection portion 12 is formed so that the cross-sectional shape thereof is flat. When the pipe connection portion 12 is fixed to the attachment surface 2, a space occupied by the pipe connection portion 12 behind the attachment surface 2 is formed. It is provided so that it can be reduced. Moreover, the external shape of the pipe connection part 12 is formed in the shape which made the upper ellipse which becomes a semicircle shape half. In addition, a male screw to which the terminal 56 of the pipe 54 is screwed is engraved on the outer peripheral surface at the tip of the pipe connecting portion 12. In this example, the pipe 54 has a normal circular cross section, but the entire pipe 54 or at least a portion connected to the pipe connecting portion 12 is formed in a flat cross-sectional shape. If it is used, the space for routing the piping on the back side of the mounting surface 2 can be reduced while securing a sufficient amount of hot water or water, so that the piping 54 can be easily mounted even if the space between the back side of the mounting surface 2 and the housing 50 is narrow. This is preferable.

  Further, as shown in FIG. 1, an inward flange 18 having a slightly larger diameter than a small-diameter portion 32 of the connecting member 30 described later is formed slightly toward the far end of the crank joint connecting portion 14. Yes. Further, a first accommodating portion 22 formed on the inner peripheral surface having a diameter larger than that of the flange 18 is formed closer to the tip of the crank joint connecting portion 14 than the flange 18. And the step part 20 in which the end surface of the step part 33 of the connection member 30 is latched is formed in the boundary of the flange 18 and the 1st accommodating part 22. As shown in FIG. When the connecting member 30 is mounted in the crank joint connecting portion 14, the connecting member 30 is locked and positioned by the stepped portion 20. In addition, a second housing portion 24 having a larger diameter than the first housing portion 22 is formed on the distal end side of the first housing portion 22. A circumferential groove 26 is provided on the inner peripheral surface in the vicinity of the opening of the second accommodating portion 24, and the connecting member 30 is connected to the crank joint connecting portion 14 by a C-ring 28 attached to the circumferential groove 26. Removal from is prevented.

  Further, when the connecting member 30 is rotated, the restricting projection 46 is locked to the upper inner wall surface of the third housing portion 27 provided on the far end side of the flange 18 of the crank joint connecting portion 14. The abutting portion 25 protrudes toward the inside of the third accommodating portion 27 at a possible position. As shown in FIG. 3, the contact portion 25 is formed along the axial direction of the crank joint connection portion 14, that is, when the connection member 30 is attached to the crank joint connection portion 14, It is formed in a rectangular plate shape so as to be in a state along the longitudinal direction of the contact portion 48, and a sufficient area thereof is provided so as to contact the contact portion 48. As shown in FIG. 1, the depth of the third accommodating portion 27 is such a length that a slight gap is formed between the tip of the restricting protrusion 46 of the connecting member 30 when the connecting member 30 is attached to the joint body 10. (In this example, specifically, an interval of about 1.5 mm is provided). Therefore, the distance from the flange part 16 to the outer wall surface of the pipe connection part 12 can be shortened (specifically, in this example, the distance from the mounting surface 2 side of the flange part 16 to the outer wall surface of the pipe connection part 12 is approximately (It is about 45 mm in the above-described conventional pipe joint.) Therefore, since the space occupied by the joint body 10 on the back side of the mounting surface 2 can be reduced, the piping 54 can be easily provided even when there is no sufficient space between the housing 50 on the back side of the mounting surface 2. Can be routed. The distance from the opening end face of the back end opening 35 of the connecting member 30 to the inner wall surface of the pipe connecting portion 12 of the joint body 10 is set to about 8 mm. A sufficient amount of water flowing into the flow path 31 in the connecting member 30 can be secured.

  Next, the connection member 30 will be described. The connecting member 30 is formed in a substantially cylindrical overall shape, and a flow path 31 for circulating hot water / water is formed therein. Moreover, a small diameter portion 32 accommodated in the flange 18 of the joint body 10 is provided at one end side, and a large diameter portion 34 accommodated in the second accommodation portion 24 is provided at the other end side. Between these, an intermediate portion 36 formed with an outer diameter intermediate between the small diameter portion 32 and the large diameter portion 34 is provided. As described above, the step portion 33 formed at the boundary between the small diameter portion 32 and the intermediate portion 36 is locked to the step portion 20 of the crank joint connection portion 14, while the open end surface of the large diameter portion 34 is connected to the crank portion 20. The connecting member 30 is engaged with the C-ring 28 mounted in the circumferential groove 26 of the joint connecting portion 14, and is thus mounted in the crank joint connecting portion 14 so as to be rotatable about its axis. ing.

  In addition, two circumferential grooves 40 are provided on the outer peripheral surface of the intermediate portion 36, each of which is fitted with an O-ring 38 that is water-tight with the inner peripheral surface of the first accommodating portion 22 of the crank joint connecting portion 14. . Even when the connecting member 30 is rotated, the O-ring 38 is always brought into close contact with the first accommodating portion 22 to achieve watertightness. In addition, a circumferential groove 42 that is recessed in the axial direction of the connecting member 30 is formed at the inner back end of the large diameter portion 34 at a position where an opening end surface is located when a crank joint 60 described later is screwed. In this circumferential groove 42, a packing 44 is mounted for watertightness between the connection member 30 and the crank joint 60. Further, a female thread to which the crank joint 60 is screwed is engraved on the inner peripheral surface of the large diameter portion 34. This female thread is a parallel female thread.

  As shown in FIGS. 1 and 3, a part of the opening end surface of the rear end side opening 35 protrudes into the third accommodating portion 27 of the crank joint connecting portion 14 when the connecting member 30 rotates. A restricting protrusion 46 that can come into contact with the provided contact portion 25 protrudes in the axial direction of the connecting member 30. When the connecting member 30 is mounted in the crank joint connecting portion 14, the connecting member 30 can be rotated within a range in which the restricting projection 46 is in contact with the contact portion 25 (about 330 degrees). Yes.

  As shown in FIG. 3, the restriction protrusion 46 is formed on the opening end surface of the back end side opening 35 so as to have a trifurcated shape when viewed from the tip. The restricting protrusion 46 includes a contact portion 48 provided continuously from the outer peripheral surface of the small diameter portion 32 and a reinforcing portion provided continuously from the contact portion 48 and from the inner peripheral surface of the opening of the small diameter portion 32. 52. When the connection member 30 is rotated, the side surface of the contact portion 48 contacts the contact portion 25 of the joint body 10. When the crank joint 60 is screwed into the connection member 30 with a strong force during the mounting operation, the contact portion 48 of the connection member 30 that rotates together with the crank joint 60 comes into contact with the contact portion 25. Although the contact portion 48 may be damaged, in the present embodiment, since the entire restricting protrusion 46 is reinforced by the reinforcing portion 52, the contact portion 48 is not easily damaged. In this example, the reinforcing portion 52 is formed within the range of about 90 degrees around the axis along the opening surface of the small diameter portion 32.

  Next, the crank joint 60 will be described. As shown in FIGS. 1 and 2, the crank joint 60 is entirely formed in a crank shape, and includes a first connection portion 62 screwed into the connection member 30, and a first connection portion 62 to a first connection portion 62. A second connection portion 64 that is bent and connected substantially at right angles to the shaft center, and the tip of the second connection portion 64 is the same as the shaft center of the first connection portion 62 and is opened in the opposite direction and is a water faucet A connection port 66 connected to the main body 8 side is provided.

  As shown in FIG. 1, a parallel male screw is engraved on the outer peripheral surface of the first connecting portion 62, and is screwed onto the female screw on the inner peripheral surface of the large-diameter portion 34 of the connecting member 30. Moreover, the opening front end surface of the first connecting portion 62 is provided at a position facing the circumferential groove 42 of the connecting member 30 to which the packing 44 is attached. When the first connecting portion 62 is screwed, The packing 44 is crushed by the front end surface of the first connecting portion 62, and the first connecting portion 62 and the connecting member 30 are provided to be watertight.

  In addition, a cover 68 that covers the nut 5 and the screw 7 described above is latched on the outer peripheral surface of the first connecting portion 62 that is exposed to the outside in a state of being screwed to the connecting member 30. A plurality of ridges 70 are formed. The cover 68 is provided with an insertion hole 72 through which the first connection portion 62 is inserted, and a cylindrical portion 74 is formed continuously from the insertion hole 72. A plurality of protrusions 76 that can lock the protrusions 70 are formed on the inner peripheral surface of the cylindrical portion 74, and the protrusions 76 are engaged with the protrusions 70 of the first connection part 62. The cover 68 is provided so as to be positioned with respect to the first connection portion 62. In addition, a flow control valve 80 with a water stop function and a strainer 82 are built in the first connection portion 62.

  The first connecting portion 62 is continuously provided with a second connecting portion 64 that is bent substantially perpendicularly to the axis of the first connecting portion 62, and a water tap is provided at the tip of the second connecting portion 64. A connection port 66 to which each connection portion 86 of the main body 8 is connected is provided so as to open in the axial direction of the first connection portion 62.

  Next, a method of connecting the pipe using the pipe joint 1 and the faucet body 8 will be described. First, the connection member 30 is mounted in the joint body 10. The connecting member 30 is inserted into the joint body 10 in a state in which both positions are shifted so that the contact portion 25 on the joint body 10 side and the restricting protrusion 46 on the connection member 30 side do not interfere with each other. The step 33 is pushed in until it contacts the step 20 in the crank joint connecting portion 14. Then, the C ring 28 is fitted into the circumferential groove 26 to fix the connection member 30 in the joint body 10. Note that the connection member 30 may be mounted in the joint body 10 in advance when the piping joint 1 is shipped. Next, the joint body 10 is fixed to the mounting surface 2. The crank joint connecting portion 14 of the joint body 10 is inserted into the mounting hole 3, and the flange portion 16 with the seat packing 4 interposed therebetween is brought into contact with the periphery of the mounting hole 3 to be locked. In this state, the screw 7 is screwed into the mounting surface 2 from the insertion hole 17. Further, from the front side of the mounting surface 2, the nut 5 is screwed onto the male screw of the crank joint connecting portion 14. In this way, the attachment surface 2 is nipped and fixed by the flange portion 16 and the nut 5, and the pipe joint 1 is fixed to the attachment surface 2. Further, a screw 7 is screwed into the mounting surface 2 from the fixing hole 6 of the nut 5 to prevent the nut 5 from rotating.

  Next, the crank joint 60 is screwed to the connection member 30. First, the cover 68 is inserted to the back end of the first connection portion 62, and the first connection portion 62 is screwed into the large diameter portion 34. Since the connecting member 30 is rotatably attached to the joint body 10 as described above, at the time of this screwing, the connecting member 30 also rotates together with the first connecting portion 62 at the beginning. After the restricting projection 46 on the connection member 30 side is rotated until it contacts the contact portion 25 on the joint body 10 side, the rotation of the connection member 30 is restricted, and the first connection portion 62 is accommodated in the second housing. The screw is gradually screwed into the female screw of the portion 24 and advances toward the connecting member 30. And if the 1st connection part 62 is screwed in to the back end of the 2nd accommodating part 24, the packing 44 with which the circumferential groove 40 of the back end of the 2nd accommodating part 24 was mounted | worn moderately collapsed, and the 1st connecting part It will be screwed in to the state which can perform watertight of 62 and the connection member 30 fully. With respect to the water faucet body 8 of the hot and cold water mixing faucet, the connection operation so far is performed for the two pipe joints 1 on the water supply side and the hot water supply side. In this state, appropriate positioning with respect to the axial direction (screwing direction) of the first connecting portion 62 of the crank joint 60 with respect to the joint body 10 via the connecting member 30, that is, the mounting surface 2 is performed. In addition, between the outer peripheral surface of the intermediate portion 36 and the inner peripheral surface of the joint main body 10, the O-ring 38 is always watertight.

  Then, in the direction of arrow B shown in FIG. 2, the interval between the connection ports 66 of the two crank joints 60 is adjusted to the interval between the connection portions 86 of the water faucet body 8. In order to adjust the distance, the second connection portion 64 of one or both of the crank joints 60 is rotated in the direction opposite to the screwing direction to adjust the distance. At this time, the connection member 30, whose rotation has been restricted by the restriction projection 46 being locked to the contact portion 25, is reversed by the separation of the contact portion 25 and the restriction projection 46. The crank joint 60 rotates together with the crank joint 60 until the restricting projection 46 is locked to the contact portion 25 again. In this manner, the interval between the connection ports 66 of the crank joint 60 can be adjusted. At this time, while the connecting member 30 is rotated together, the screwing amount of the crank joint 60 with respect to the connecting member 30 does not change. Therefore, the crushing condition of the packing 44 at the back end of the large-diameter portion 34 of the connecting member 30 does not change, and a sufficient seal can still be secured. At the same time, the positioning of the crank joint 60 (positioning in the screwing direction) with respect to the connecting member 30 positioned with respect to the joint body 10 and the mounting surface 2 by the C ring 28 or the like does not change. Therefore, the amount of protrusion of the crank joint 60 with respect to the mounting surface 2 does not differ between the two crank joints 60. Therefore, the positions of the two connection ports 66 are aligned in the direction of arrow C in FIG. The connection work of the connection port 66 to each connection part 86 can be performed smoothly. Finally, the cylindrical portion 74 is slid so that the protrusions 76 on the inner peripheral surface of the cylindrical portion 74 of the cover 68 get over the protrusions 70 of the first connection portion 62 in sequence, and the outer peripheral end of the cover 68 is pressed against the mounting surface 2. The nut 5 and the like are covered as described. The cover 68 may be slid immediately after the crank joint 60 is screwed.

  As shown in FIGS. 3 and 4, in the pipe joint 1 described above, the width of the contact portion 48 is made as small as possible in order to secure the adjustment angle of the crank joint 60 as large as possible. On the other hand, the reinforcing portion 52 is made as wide as possible to ensure the strength of the restricting projection 46. As described above, the restricting protrusion 46 is formed in a trifurcated shape in which the width of the abutting portion 48 is provided small, while the width of the reinforcing portion 52 connected to the restricting portion 48 is provided large. The adjustment angle of the crank joint 60 can be increased while ensuring sufficient strength of 46.

  Next, a second embodiment of the present invention will be described. The present embodiment is a pipe joint that connects a single water tap as a water tap and piping, and is an example in which the single water tap is screwed into the pipe joint as it is. In the following description, the same reference numerals are given to the same components as those in the first embodiment, and the description thereof is omitted. As shown in FIG. 5, a single faucet 8 ′ is connected to the pipe joint 1 ′. The single faucet 8 'is connected to a water supply pipe (not shown) via a pipe joint 1'. A hose (not shown) is connected to a water outlet 77 projecting obliquely upward from the side surface of the single faucet 8 '. ) Is attached and used as a water spigot. Further, a connecting portion 79 in which a parallel male screw is engraved is provided at the lower portion of the single water faucet 8 '. In this pipe joint 1 ′, the connection part 79 of the single water faucet 8 ′ is directly screwed into the parallel female thread of the connection member 30 so that the single water faucet 8 ′ is connected and fixed to the pipe joint 1 ′ and connected to the water supply pipe.

  The single water faucet 8 ′ connected and fixed to the pipe joint 1 ′ in this manner can be used as long as the restricting protrusion 46 is not restricted by the abutting portion 25 in order to route the hose connected to the connecting fitting 78. The faucet 8 'can be rotated around the screwing direction, and even if the hose is routed in various directions during use, it is difficult for the hose connection part to be bent, and the convenience of the single faucet as a water faucet Rise. Also at this time, the O-ring 38 and the packing 44 ensure the watertightness of each connection portion of the pipe joint 1 ′. In addition, after connecting and fixing the single faucet 8 'to the pipe joint 1', when it is not necessary to turn the direction of the water discharge port 77 in a desired direction and thereafter change the direction, the lower part of the faucet body 8 ' A means for fixing the provided flange 90 or the like to the attachment surface 2 may be separately provided so that the direction of the faucet body 8 ′ is not changed thereafter.

  Next, a third embodiment of the present invention will be described. In this embodiment, the connecting member is formed in a crank shape, and a connecting member that can be used as it is instead of the crank joint that connects the faucet body is used. As shown in FIG. 6, a connection member 30 ′ is inserted and connected to the joint body 10 of the pipe joint 1 ′. The connecting member 30 ′ is formed in a crank shape as a whole, and is folded at a substantially right angle with respect to the first connecting portion 62 inserted into the joint body 10 and the first connecting portion 62 to the axis of the first connecting portion 62. A second connection part 64 that is bent and connected, and a connection port that is the same as the axis of the first connection part 62 at the tip of the second connection part 64 and that opens in the opposite direction and is connected to the faucet body 8 side 66. Further, the step portion 33 ′ is locked to the step portion 20 in the joint body 10. The large-diameter portion 34 ′ is provided with a circumferential groove 92, and a split ring 94 divided into two is attached to the circumferential groove 92. The end face of the split ring 94 is locked to the C ring 28 mounted in the circumferential groove 92 of the joint body 10, so that the connecting member 30 ′ is connected to the joint body 10 via the split ring 94 and the C ring 28. And is mounted so as to be rotatable. In the present pipe joint 1 ′, the joint body 10 and the water faucet body can be connected by a single member, so that the connection work can be simplified. Further, since the number of connecting parts to the water faucet body including the pipe joint 1 ′ can be reduced, the manufacturing cost can be reduced.

  In addition, the said embodiment is an illustration and is not restricted to this, A various change is possible within the range of the meaning of this invention. For example, the restricting protrusion and the contact portion are not limited to the shape and width described above, and the connecting member can rotate within a predetermined range with respect to the joint body, and rotates when the connecting member is out of the predetermined range. As long as the is regulated. For example, when sufficient strength can be secured, the shape of the restricting protrusion 46 ′ is not limited to the shape of the restricting protrusion 46 described above, and may be a restricting protrusion 46 ′ protruding in a square shape as shown in FIG. 7.

  Further, unlike the above-described embodiment, the restricting protrusion may be formed at a larger angle (specifically, an angle larger than 90 degrees) along the opening end face of the small diameter portion 32. On the other hand, since it is necessary for water to flow smoothly from the joint body 10 into the flow path 31 of the connection member 30, the restriction protrusion 46 does not have a size that blocks the third housing portion 27 of the joint body 10. It is desirable. For example, as the angle of the crank joint 60 is adjusted, the restricting protrusion 46 may be positioned on the primary side of the flow path, that is, on the pipe connecting portion 12 side. Therefore, in order to secure a sufficient water flow amount assuming such a case, the width of the restricting protrusion 46 (more specifically, the width of the reinforcing portion 52 in the first embodiment) can be made. As small as possible, it is preferably provided at 90 degrees or less around the axis of the connection member 30 as in the first embodiment. In addition, in order to secure a certain amount of water flow along with the reinforcement of the restricting protrusion 46, a water flow hole may be provided in the reinforcing portion 52 so as not to significantly reduce the strength.

  Further, in the above-described embodiment, the contact portion 25 is provided on the outer upper side (the upper portion in FIG. 4) of the connecting portion between the pipe connection portion 12 and the crank joint connection portion 14. It may be provided at another portion around the 30 axis, for example, on the lateral side of the crank joint connection portion 14 (one of the left and right portions in FIG. 4). Further, if the strength does not become insufficient, the contact portion 25 and the restricting projection 46 can be provided as separate members that are retrofitted to the joint body 10 or the connection member 30.

  Further, in the above embodiment, the restricting protrusion 46 protrudes from the opening end surface of the back end side opening 35, but rises from the outer peripheral surface of the back end side opening 35 and faces the back end side of the connecting member 30. It is also possible to project. In this case, around the tip of the back end side opening 35, a space in which the restricting protrusion 46 can move around when the connecting member 30 is rotated is defined as a third accommodating portion of the crank joint connecting portion 14. 27 is formed inside.

It is a side view longitudinal cross-sectional view of the piping joint of this invention. It is a top view of the water tap main body which attaches the piping joint of FIG. It is a disassembled perspective view of a piping joint. It is the sectional view on the AA line of the piping joint of FIG. It is a side view longitudinal cross-sectional view of another piping joint. It is a side view longitudinal cross-sectional view of another pipe joint. It is a perspective view of another connection member. It is a side view longitudinal cross-sectional view of the conventional piping joint.

Explanation of symbols

1, 1 '; Piping joint, 2; Mounting surface, 3; Mounting hole, 4; Seat packing, 5; Nut, 6; Fixing hole, 7; Screw, 8, 8'; DESCRIPTION OF SYMBOLS 10; Joint main body, 12; Pipe connection part, 14: Crank joint connection part, 16: Eaves part, 17: Insertion hole, 18; Flange, 20; Step part, 22: 1st accommodating part, 24; Part, 25; contact part, 26; circumferential groove, 27; third accommodating part, 28; C ring, 30, 30 ′; connection member, 31; flow path, 32; small diameter part, 33, 33 ′; , 34, 34 ′; large diameter portion, 35; back end side opening portion, 36; intermediate portion, 38; O-ring, 40; circumferential groove, 42; circumferential groove, 44; packing, 46, 46 ′; 48; Abutting part 50; Housing 52; Reinforcing part 54; Piping 56; Terminal 60 60 Crank joint 62 62 First connecting part 64 Second connecting part 66; connecting port, 68; a cover 70; ridges, 72; insertion hole. 74; cylindrical portion, 76; protrusion, 77; spout, 78; connection fitting, 79; connection portion, 80; flow control valve, 82; strainer, 86; connection portion, 90; 94; Split ring, 96; Joint body, 97; Connection member, 98; Piping joint, 99; Restriction protrusion, 100; Contact part, 101;

Claims (3)

A joint body that is connected to a terminal of the pipe and is fixed to the mounting surface in order to connect a pipe drawn to the back side of the mounting surface such as a wall surface and a faucet installed on the front side of the mounting surface And a pipe joint provided with a cylindrical connection member that is screwed into the water faucet and is rotatably mounted in the joint body,
The rear end opening of the connecting member is provided with a restricting protrusion for restricting rotation that protrudes from the end face of the opening to the back end side.
The pipe joint according to claim 1, wherein a contact portion capable of locking the restriction protrusion of the connection member is provided on an inner peripheral surface of the joint body.   The pipe joint according to claim 1, wherein the pipe connection portion of the joint body has a flat cross-sectional shape. The pipe joint according to claim 1 or 2, wherein a flange for locking the joint body to the back side of the mounting surface is integrated with the joint body.

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