JP5209372B2 - Pipe fitting - Google Patents

Description

The present invention relates to a pipe joint for water supply / hot water supply piping used for a wall penetration part.

In detached houses, hot water heaters are installed along the outdoor wall surface, and the hot water supplied from this hot water heater is branched by a pipe header placed under the floor and made of cross-linked polyethylene or cross-linked polybutene. There is a header construction method that is sent to the faucet of the bathroom, washroom, kitchen, etc. via piping, or a pre-branch method that is sent from the water heater directly to the faucet of the bathroom, washroom, kitchen, etc. via a joint at the branching section. Many have been adopted.
By the way, in the header method or the pre-branch method, a pipe joint, also called an intermediate joint, is used at the part where the pipe penetrates the wall of the building, and the pipe inside the wall and the faucet are connected via this pipe joint. It is designed to be connected.

As such a pipe joint, a pipe joint 100 as shown in FIGS. 11 and 12 is generally used (see Patent Document 1).
That is, the pipe joint 100 includes a straight tubular insertion pipe part 110 inserted into the wall through-hole 210 and an elbow part 120, and is parallel to the tube axis of the insertion pipe part 110 outside the bent part of the elbow part 120. A fixing portion (stop seat) 130 having a fixing surface 131 is provided.

  Then, as shown in FIG. 12, the pipe joint 100 has the insertion pipe portion 110 inserted through the wall through hole 210 provided in the wall 200 and the batten 300 attached to the upper wall surface of the wall through hole 210. The fixing pipe 130 is aligned with the fixing surface 131 of the fixing portion 130, and the fixing portion 130 is fixed to the holding tree 300 with a fixing screw (not shown), thereby inserting the insertion tube portion 110 into the wall through hole 210. Can be fixed in a positioned state.

  Further, a joint body provided with a downstream downstream receiving port and an upstream upstream receiving port opened in a 90 ° direction with respect to the downstream receiving port, and provided in the joint body, the axial direction of the downstream receiving port A stop seat having a mounting surface parallel to the radial direction and capable of being attached to a side of the joint body facing the downstream receiving port with respect to the mounting surface, and provided on the stopping seat, on the side facing the upstream receiving port A horizontal direction display unit that is formed on one side of the stopper seat, passes through the central axis of the downstream receiving port, and displays a horizontal direction that is a radial direction with respect to the axial direction of each of the downstream receiving port and the upstream receiving port; A longitudinal direction, which is an axial direction of the upstream receiving port, is formed by a rib portion protruding from the joint body toward the outer diameter direction with respect to the bending direction of the joint body, and passes through the central axis of the downstream receiving port. A vertical display unit for display. It has also been proposed clamp seating with joint characterized by (see Patent Document 2).

  That is, this joint with a locking seat marks the center point at the position where the central axis of the downstream receiving port of the joint body on the mounting surface to which the joint body is to be attached, and covers the horizontal and vertical lines passing through this center point. Write a ruled line on the mounting surface. Next, the horizontal direction display portion of the stopper seat is aligned with the horizontal line, and the mounting surface of the stopper seat is attached to the mounting surface with the vertical direction display portion of the joint body aligned with the vertical line. The side facing the downstream receiving port is attached to the mounting surface. At this time, the central axis of the downstream receiving port of the joint body coincides with the intersection of the horizontal line and the vertical line on the mounting surface. Therefore, there is an effect that the pipe joint 100 does not have such an effect that accurate alignment of the central axis of the downstream receiving port at the time of mounting on the mounting surface is facilitated.

  However, in the case of the pipe joint 100 and the joint with a stopper seat, it cannot be attached unless a batten or the like is provided, and the work man-hours are complicated, and if the mounting accuracy of the batten is not good, the pipe is perpendicular to the wall. I cannot pass it.

Design Registration No. 1205107 Japanese Patent No. 3502816

In view of the above circumstances, an object of the present invention is to provide a pipe joint for water supply / hot water supply piping that can be fixed at a predetermined position on a wall surface with high accuracy and good workability.

In order to achieve the above object, a pipe joint for water supply and hot water supply piping according to the present invention (hereinafter referred to as only “pipe joint”) includes an insertion pipe section that is inserted into a wall through-hole provided in a wall; A plurality of fixed arms extending radially from the outer peripheral surface of the insertion tube portion, communicating with the insertion tube portion, projecting to the opposite side of the insertion tube portion with the fixed arm interposed therebetween, and other piping members holding fastener clips A joint body member made of a metal material having a connecting portion that is watertightly connected to the fixing pipe, and the fixing arm is inserted into the wall through hole of the insertion tube portion insertion side in a state where the insertion tube portion is inserted into the wall through hole. It has a fixing surface that abuts on the surrounding wall surface and coincides with the tube axis orthogonal surface of the insertion tube portion, and a fixture insertion hole for the wall surface.

In the present invention, the number of fixed arms is not particularly limited as long as it is two or more, and may not be evenly spaced. However, in consideration of mounting properties, there are those having four fixed arms in a cross shape. preferable.
Pipe joint of the present invention, if example embodiment, the insertion tube portion, and the metal material of the coupling body member having a fixed arm and a fastener connecting portion, rotatably via a fastener clip into the fastener connecting portion of the joint body member It is good also as a structure provided with the elbow member connected watertightly.

Although it does not specifically limit as a use of the pipe joint of this invention, For example, the water heater provided outside the building, the piping header and hot water tap in a building, the water pipe in a wall, a veranda water tap, etc. are connected. Can be used.

As described above, the pipe joint according to the present invention, the insertion tube portion inserted through the through-wall hole in the wall, and a plurality of fixed arms extending radially from the outer peripheral surface of the insertion pipe portion, wherein A joint body member made of a metal material is provided that communicates with the insertion tube portion, protrudes to the opposite side of the insertion tube portion with the fixed arm interposed therebetween, and has a connecting portion that is watertightly connected to another piping member via a fastener clip. The fixed arm is in contact with the peripheral wall surface of the wall through hole on the insertion tube portion insertion side in a state where the insertion tube portion is inserted through the wall through hole, and is fixed to the tube axis orthogonal surface of the insertion tube portion. And a fixing tool insertion hole on the wall, it can be fixed directly to the inner wall of the building using a fixing tool such as a screw. Yes.
And a wall through-hole can be looked into from the clearance gap between fixed arms, and a position can be confirmed visually and it can fix. It becomes possible to attach more accurately.

Hereinafter, the present invention will be described in detail with reference to the drawings showing the embodiments. FIG. 1 shows a first embodiment of a pipe joint according to the present invention.

As shown in FIG. 1, the pipe joint 1 a includes a joint body member 2 a, an elbow member 3 a, and a fastener clip 4.
The joint body member 2a is formed of a metal material such as brass, gun metal, copper, etc., and as shown in FIGS. 1, 2, and 6, an insertion tube portion 21, an elbow connecting portion 22, and four fixed arms. 23.

The insertion tube portion 21 has a straight tube shape, has a female screw cylinder portion 24 at one end, and communicates with the elbow connection portion 22 at the other end.
The elbow connecting portion 22 has a straight tube with a small diameter having the same inner diameter as the insertion tube portion 21 and the tube axis of the insertion tube portion 21, and a fastener clip 4 described later on the outer peripheral surface of the opening end portion. The locking groove 25 is formed.

The four fixed arms 23 are provided so as to extend radially from the outer wall surface of the end portion on the insertion tube portion 21 side of the elbow connection portion 22 so as to form a cross shape around the central axis of the insertion tube portion 21. .
Each fixing arm 23 has a fixing tool insertion hole 23a, and is provided so that a fixing surface 23b to the wall 5 coincides with the tube axis orthogonal surface of the insertion tube portion 21. That is, the fixed surfaces 23b of the four fixed arms 23 are positioned on the same surface.

As shown in FIGS. 1 and 3, the elbow member 3 a includes an elbow body portion 31 that bends at 90 °, a one-touch joint portion 32 provided at one end of the elbow body portion 31, and the other end of the elbow body portion 31. The nozzle connection part 33 provided is provided.
The elbow body 31 includes two annular flanges 35 and 36 that form a locking groove 34 of the fastener clip 4 along the edge on the nozzle connection portion 33 side.

The one-touch joint 32 has the same structure as, for example, the product name Srocatit manufactured by Sekisui Chemical Co., Ltd. Are connected in a water-stopped state.
The nozzle connecting portion 33 has an outer diameter that is substantially the same as the inner diameter of the elbow connecting portion 22 of the joint body member 2a, and O-rings 37 and 37 are fitted on the outer periphery.

The fastener clip 4 includes a synthetic resin detachment preventing member 41 shown in FIG. 4 and a clip body 42 made of a metal material such as stainless steel shown in FIG.
The clip main body 42 includes a slit 42 a, and the width of both side edges 42 b of the slit 42 a is formed to fit into the locking groove 25. The width of the slit 42a is formed to be substantially the same as or slightly larger than the sum of the width of the flange 35 and the width from the end surface of the elbow connecting portion 22 to the locking groove 25.
In FIG. 4, 41 a is a locking claw of the clip main body 42, and 41 b is an engaging protrusion to the locking groove 25.

  The pipe joint 1a is formed, for example, as shown in FIGS. 1 and 6 with a wall through hole 52 having a diameter larger than that of the insertion pipe portion 21 in the wall 5 and indicated by a two-dot chain line in FIG. In addition, after marking two perpendicular lines L passing through the center of the wall through hole 52 with a pencil or the like on the wall surface 51, the insertion tube portion 21 is inserted from one side of the wall 5 to the other as shown in FIG. Then, the fixing surface 23b is brought into close contact with the wall surface 51 so that the fixing tool insertion holes 23a of the four fixing arms 23 respectively face this line L, and fixed through the fixing tool insertion holes 23a as shown in FIG. A fixing screw 7 as a tool is screwed into the wall 5, and the joint body member 2 a is fixed to the wall 5.

Next, the nozzle connecting portion 33 of the elbow member 3a is inserted into the elbow connecting portion 22 of the joint body member 2a until the flange 35 contacts the end surface of the joint body member 2a.
Thereafter, the clip main body 42 was externally fitted to the connecting portion between the joint main body member 2a and the elbow member 3a so that the portions from the flange 35 and the end face of the elbow connecting portion 22 to the locking groove 25 face the slit 42a. After that, the detachment preventing member 41 is mounted so that the engaging protrusion 41b enters the locking groove 25 of the elbow connecting portion 22 and the both open ends 42c of the clip body 42 are locked by the locking claws 41a. The elbow member 3a is rotatably and watertightly connected by the fastener clip 4.

Along the wall surface on the elbow member 3a side, a heat insulating material such as glass wool or a refractory material such as a gypsum board may be provided as necessary.
A water / hot water supply pipe is connected to the one-touch joint portion 32, and a water tap is connected to the female screw cylinder portion 24.

Since this pipe joint 1a is as described above, it has the following excellent effects.
(1) Since the fixing arm 23 is provided, the fixing arm 23 can be directly fixed to the wall 5, and a fixing work can be simplified without using a batten.
(2) Since the four fixed arms 23 are arranged in a cross shape, positioning is easy.
(3) If the diameter of the insertion tube portion 21 is smaller than that of the wall through hole 52, the wall through hole 52 can be seen through the gap of the fixed arm 23, and the position can be visually confirmed and fixed.
(4) Since the joint body member 2a and the elbow member 3a are rotatably connected and fixed via the fastener clip 4, the angle of the elbow member 3a can be freely adjusted, and the pipe joint 1a The pipe direction can be selected even after fixing to the wall 5 and after heat insulation finish.

7 and 8 represent the KanTsugi hand reference example.
As shown in FIGS. 7 and 8, in this pipe joint 1b, an elbow part 3b, a joint body part 2b, and four fixed arms 23 are integrally formed, and a cross formed by the four fixed arms 23 is the elbow part 3b. The pipe joint 1a is the same as the pipe joint 1a except that it is provided with a 45 ° offset with respect to the bending direction.
That is, since the elbow portion 3b, the joint body member 2b, and the four fixed arms 23 are integrally formed, the pipe joint 1b can be manufactured with a small number of parts and at a low cost.
Further, since the cross shape formed by the four fixing arms 23 is provided by being shifted by 45 ° with respect to the bending direction of the elbow portion 3 b, the elbow member does not become an obstacle when the fixing screw 7 is screwed. .

Figure 9 represents a second embodiment of pipe joint according to the present invention.
As shown in FIG. 9, the pipe joint 1c is the same as the pipe joint 1a except that the three fixed arms 23 are provided radially at equal intervals.

FIG. 10 shows a third embodiment of the pipe joint according to the present invention.
As shown in FIG. 10, the pipe joint 1d is the same as the pipe joint 1c except that the three fixed arms 23 are provided so as to form a T shape instead of being equally spaced.

The pipe joint of the present invention is not limited to the above embodiment. For example, in the case of the pipe joints 1a, 1c, and 1d described above, the nozzle connecting portion 33 is provided on the elbow member 3a side, but may be provided on the joint body member 2a side.
In the above-described embodiment, the female threaded cylinder part 24 is provided in the insertion tube part 21, but it may be a male threaded cylinder part.
In the above embodiment, a 90 ° elbow type is used, but a straight tube type or a 45 ° elbow type may be used.

BRIEF DESCRIPTION OF THE DRAWINGS It is 1st Embodiment of the pipe joint concerning this invention, Comprising: It is a side half sectional view which shows the attachment state to the wall. It is a side view of the joint main body member of the pipe joint of FIG. It is a side half sectional view of the elbow member of the pipe joint of FIG. It is explanatory drawing of the slip prevention member which comprises a part of fastener clip of the pipe joint of FIG. 1, Comprising: The figure (a) is a front view, The figure (b) is a bottom view, The figure (c) is a bottom face FIG. 4D is a cross-sectional view taken along line XX of FIG. 5B, FIG. 5E is a cross-sectional view taken along line Y-Y of FIG. 4B, and FIG. It is a ZZ line sectional view of (b). It is a perspective view of the clip main body which comprises the remainder of the fastener clip of the pipe joint of FIG. It is a front view explaining the attachment state to the wall of the coupling main body member of FIG. It is a side half sectional view of the pipe joint of a reference example . It is a front view of the pipe joint of FIG. It is 2nd Embodiment of the pipe joint concerning this invention, Comprising: It is a front view of the joint main body member. It is 3rd Embodiment of the pipe joint concerning this invention, Comprising: It is a front view of the joint main body member. It is a side half sectional view of the conventional pipe joint. It is a figure explaining an example of the attachment state of the pipe joint of FIG.

1a, 1b, 1c, 1d Pipe joint 2a Joint body member 2b Joint body part 21 Insertion pipe part 22 Elbow connection part 23 Fixing arm 23a Fixing tool insertion hole 23b Fixing surface 24 Female thread cylinder part 25 Locking groove 3a Elbow member 3b Elbow part 31 Elbow body 32 One-touch joint part 33 Nozzle connection part 34 Locking groove 35, 36 鍔 37 O-ring 4 Fastener clip 41 Locking member 41a Locking claw 41b Engagement protrusion 42 Clip body 42a Slit 42b Side edge 42c Open end 5 Wall 51 Wall 52 Wall through-hole 7 Fixing screw (fixing tool)

Claims (3)

An insertion tube portion inserted through a wall through-hole provided in the wall;
A plurality of fixed arms extending radially from the outer peripheral surface of the insertion tube portion;
A metal material having a connection portion that communicates with the insertion tube portion, protrudes to the opposite side of the insertion tube portion with the fixed arm interposed therebetween, and is connected to another piping member in a watertight manner via a fastener clip. A joint body member is provided,
The fixed arm is in contact with the peripheral wall surface of the wall through hole on the insertion tube portion insertion side in a state where the insertion tube portion is inserted into the wall through hole, and a fixing surface that coincides with the tube axis orthogonal surface of the insertion tube portion. A fitting for water supply and hot water supply piping, comprising a fixture insertion hole for a wall surface.   The pipe joint according to claim 1, comprising four fixed arms so as to form a cross shape. Before and KiTsugi hand body member, the pipe joint according to claim 1 or claim 2 and a elbow member which is rotatably watertight connected via the fastener clip to the connecting portion of the joint body member.

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