JP2005188569A - Snap tap and attaching method of snap tap - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a snap tap excellent in durability and sealability at an attachment portion of the snap tap, the snap tap having such versatility that it can be applied to a pipe of metal or synthetic resin easily without requiring high processing accuracy, and being excellent in installation facility and economical efficiency since the process of attaching the snap tap to a piping section can be performed efficiently. <P>SOLUTION: The snap tap 10 comprises: (a) a snap tap main body 11 including a branch pipe connecting portion 11c through which a branch pipe is screwedly connected to the side portion of a water passage hole 11b vertically extending through the snap tap main body; (b) an enlarged-diameter metallic conduit 12 having a lower end portion inserted through an attachment hole portion of the piping section T where the snap tap main body 11 is attached, the top end of the metallic conduit 12 being curled to enlarge the diameter to thereby secure the snap tap main body 11 to the piping section T; (c) a seal packing member 13 made of elastic material attached to and retained by the lower portion of the snap tap main body 11; and (d) a piping support member 14 made of metal or synthetic resin which is formed in a substantially divided cylindrical shape so that it fits the peripheral wall surface of the piping section T. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention provides a water faucet in which a branching portion can be easily disposed in a resin pipe or an iron pipe such as a water supply pipe or a water pipe or a resin or concrete-covered pipe disposed in a home, etc. The present invention relates to a faucet attachment method.

Normally, when branching a branch pipe to a main pipe such as a water pipe or a gas pipe, a perforated part is formed in the water pipe and a water faucet connected to the branch pipe is provided in the perforated part. Branch. A gasket is attached between the perforated portion of the water pipe and the mounting surface of the water faucet so as to achieve a sealing property between the water faucet and the perforated portion.
For example, the following is known in connection with such a water faucet.
In Patent Document 1, a thin hollow cylindrical metal fitting having an upper and lower end opening in which a lower end portion is formed as an enlarged diameter portion and an outward annular convex portion is formed on the upper end portion side, and an outer periphery of the lower end portion of the cylindrical fitting A rubber ring fitted to and attached to the outer periphery of the cylindrical ring and a cylindrical mounting nut fitted to and attached to the outer periphery of the cylindrical bracket below the outward annular convex portion formed on the cylindrical bracket above the rubber ring And an annular water stop member that is attached to the inner peripheral surface of the lower end portion of the branch pipe (plug body) screwed to the inner peripheral surface of the mounting nut and that contacts the outer peripheral surface of the cylindrical fitting to control water stop. A water faucet equipped with an O-ring or the like is described.

In Patent Document 2, a saddle water faucet equipped with a saddle is attached to the outer surface of a resin pipe through a gasket, and a branch hole is formed by a punching tool at the mounting position of the resin pipe, and an insert core is screwed into the branch hole. In this way, the gasket is made to function by preventing the resin tube from being deformed inward due to the surface pressure of the gasket mounted in the groove on the mounting surface of the saddle or the residual stress of the resin tube itself. ing.
Japanese Patent Laid-Open No. 2001-280568 JP-A-10-196871

However, the conventional techniques have the following problems.
In the water faucet described in Patent Document 1, if the water faucet once attached is removed for some reason and is to be attached again, if the piping part is made of resin, the vicinity of the mounting hole of the piping part is greatly deformed at the time of removal. As a result, it may be difficult or impossible to reinstall.
In the saddle water faucet described in Patent Document 2, if the pipe part is a metal pipe such as a cast iron pipe or a steel pipe, the sealing performance of the saddle mounting surface is maintained by the gasket, but the pipe part is chlorinated. In the case of resin piping such as vinyl, polyethylene, polypropylene, etc., if the saddle is used with bolts and nuts tightened, the resin pipe will deteriorate and deform, and the sealing performance of the gasket will deteriorate, and the saddle will receive a large external force. Therefore, there is a problem that the resin pipe may be displaced, and water leakage from this portion is likely to occur. Furthermore, since processing accuracy is required for the water faucet that contacts the resin pipe and the joint and saddle, there is a problem that processing costs and material costs are bulky and lacking in economic efficiency.

  The present invention has been made to solve the above-described conventional problems, and provides a water faucet excellent in durability and sealing performance at a water faucet mounting portion, and does not require a high degree of processing accuracy and is rigid. Providing a water faucet installation method with excellent versatility that can be easily applied to poorly deformable resin pipes, etc., and that can be efficiently installed in the piping section, and that has excellent workability and economy. Objective.

(1) In order to solve the above-mentioned problem, the water faucet of the present invention has a branch pipe at the side portion of the water passage hole formed with a cap portion that is formed through the top and bottom and seals the upper opening. A water faucet body having a branch pipe connecting portion to which a water pipe is screwed, and a pipe portion such as a metal pipe or a resin pipe to which the water faucet body is attached by being connected or fixed to the lower opening of the water passage hole. A diameter-expanded metal tube that has a lower end side penetrated into a mounting hole formed in the peripheral wall and expands the tip in a curled shape and fixes the water faucet body to the pipe portion, and the diameter-expanded metal tube A seal packing member made of an elastic body such as a synthetic resin or rubber that is passed through and attached to the lower part of the water faucet body, and is interposed between the seal packing member and the pipe portion, A substantially split cylinder with a pipe support surface that fits the peripheral wall of the pipe It is constructed and a tube support member made of metal or synthetic resin formed.

(2) In the water faucet of the present invention, in the above (1), the piping support member has positioning locking portions such as positioning holes and positioning protrusions for fixing the water faucet body at a predetermined position of the piping portion. It also has a feature in providing.

(3) The water faucet according to the present invention has a fixing auxiliary member such as a wire or a band for tightening and reinforcing the pipe support member attached to the pipe part in (1) or (2). May be.

(4) The water faucet attachment method of the present invention is a water faucet attachment method in which the water faucet of (1) to (3) is attached to a pipe part such as a metal pipe or a resin pipe. After the pipe support member is fixedly arranged at the water faucet mounting position of the part, the drilling machine having a drill and the diameter expanding machine for expanding the diameter of the metal pipe are replaced and attached, and the opening is drilled by the drilling machine. A mounting preparation step of positioning a sealing surface of a water faucet mounting device having a water stop gate that seals on the pipe support member, and mounting the perforator on the water faucet mounting device, After drilling the pipe support member and the pipe part using a drill to form an enlarged metal pipe insertion hole into which the enlarged metal pipe is inserted, the water stop gate is closed and the drilling machine is used for diverting the water. Drilling step to remove from the stopper mounting device, and after opening the water stop gate, the diameter expansion Inserting the enlarged metal pipe tip of the water faucet body provided with the seal packing member into the metal pipe insertion hole, and opening the tip from the upper part of the water passage hole in a hook-like shape, and the lower peripheral edge of the enlarged metal pipe The diameter expanding machine having a pressing portion that presses the upper end outward is inserted, and the lower end periphery of the expanded metal tube is expanded in a curl shape while rotating the pressing portion along the lower end periphery. By holding the elastic force of the seal packing member interposed between the pipe support member and the enlarged metal pipe, the lower peripheral edge of the enlarged metal pipe is extended to the peripheral edge of the metal pipe insertion hole. And a diameter-expansion process for fixing.

(1) According to the water faucet of the present invention, the water faucet body and the tip inserted into the mounting hole drilled in the piping part are expanded in a curled shape to fix the water faucet body from inside the piping part. An expanded metal pipe, a seal packing member that is attached to and held by the lower part of the water faucet body, and is interposed between the seal packing member and the pipe part, and is fitted to the peripheral wall surface of the pipe part And a pipe support member that is formed in a substantially divided cylindrical shape with a pipe support surface to be attached, so that a tolerance such as a bending angle can be increased in a portion where a water faucet is attached to and supported by the pipe part, and its durability And its sealing performance is enhanced and its reliability is excellent. Furthermore, when attaching a water faucet to the piping part, it does not require a high degree of processing accuracy and can be widely applied to metal piping and resin piping, and is excellent in workability and versatility. Especially when applied to resin pipes such as vinyl chloride that are easily bent or deformed, a pipe support member with high mechanical strength is interposed in the attachment part, so that the rigidity of the attachment part of the water faucet is increased, Operations such as positioning and drilling in the installation work can be performed efficiently. In addition, when the attached water faucet has to be removed once and then attached again, there is no possibility that the vicinity of the attachment hole is greatly deformed when the piping part is made of resin at the time of removal.
In addition, when the thickness of the piping portion such as a water pipe is thin, it can be adjusted as appropriate depending on the thickness of the piping support member, so that the seal packing member and the like can be standardized and excellent in convenience of application and economy.

(2) According to the water faucet of the present invention, in addition to the effect of (1), the pipe support member has a positioning hole, a positioning projection, etc. for fixing the water faucet body at a predetermined position of the pipe part. Since the positioning locking portion is provided, the operation of attaching the water faucet to the piping portion can be performed quickly and reliably, and the construction workability and economic efficiency are excellent.

(3) According to the water faucet of the present invention, in addition to the effect of (1) or (2) above, fixing of a wire or a band for tightening and reinforcing the pipe support member attached to the pipe part Since the auxiliary member is provided, the mechanical strength such as the bending strength of the piping portion including the water faucet can be improved with a simple configuration, and the durability of the water faucet can be further enhanced.

(4) According to the water faucet attachment method of the present invention, after the pipe support member is fixedly arranged at the water pipe attachment position of the pipe part, the diameter of the drilling machine having a drill and the end of the metal pipe is expanded. An attachment preparation step for positioning the position by pressing and sealing the seal surface of the water faucet attachment device provided with a water stop gate that seals the opening punched by the punching machine by exchanging the diameter expanding machine. And a drilling process for drilling a diameter expansion metal pipe insertion hole into which the diameter expansion metal pipe is inserted, and a tip of the diameter expansion metal pipe of the water faucet body is inserted, and a diameter expansion machine is inserted from above the water passage hole Then, the elastic force of the seal packing member interposed between the pipe support member and the enlarged metal pipe is held by pushing the lower end peripheral edge of the enlarged metal pipe in a curled shape, so that the metal pipe insertion hole A diameter expanding step for caulking and fixing the lower edge periphery of the expanded metal pipe to the periphery. Is excellent in versatility widely applied can be a metal pipe or a resin pipe without requiring a high degree of processing accuracy when installing the diversion plug to the pipe section. Moreover, since the attachment process to a piping part can be performed efficiently, it is excellent in workability and economical efficiency. In addition, when the piping part is made of a material softer than vinyl chloride or other metal, when pulling out the water faucet attached to the piping part for some reason, the gate valve provided in the drilling device supports the piping such as iron plates. By pressing the member, it is possible to prevent the swell around the mounting hole, and it is possible to easily perform the mounting operation when replacing the water faucet with a new one.

1 is a perspective view of a water faucet according to an embodiment of the present invention, FIG. 2 is a partially broken sectional view thereof, FIG. 3 is a front view thereof, and FIG. 4 is a plan view thereof. FIG. 5 is a side view thereof.
1 to 5, reference numeral 10 denotes a water faucet according to an embodiment of the present invention, which is attached to a pipe part T such as a water pipe or a drain pipe, and 11 is formed to penetrate vertically and has a cap part at its upper opening. A water faucet body having a branch pipe connecting portion 11c in which a branch pipe is screwed to a side portion of a water passage hole 11b to which 11a is mounted and sealed, and 12 has an upper end side at a lower opening of the water passage hole 11b. A water faucet is connected to the pipe part T by connecting or fixing the pipe hole T to the pipe part T by extending the lower end side of the mounting hole A formed in the peripheral wall of the pipe part T to which the water faucet body 11 is attached and expanding the tip in a curled shape. A diameter-enlarged metal tube for fixing the main body 11, a seal packing member 13 formed in a substantially cylindrical shape, which is penetrated by the diameter-enlarged metal tube 12 and attached to the lower part of the water faucet body 11, and 14 is a seal Insertion arrangement between packing member 13 and piping part T It is a tube support member which is formed in a substantially split cylindrical shape having a tube support surface in the circumferential wall is formed to fit the curvature of the pipe section T.

  The water faucet 10 is used by being fitted and mounted in a mounting hole A formed in a synthetic pipe such as vinyl chloride or polyethylene, or in a pipe part T made of metal such as steel, iron, or ductile cast iron. The present invention is also applied to a tube made of mortar or mortar or a multilayer tube in which these are combined. A branch pipe connecting portion 11c to which a branch pipe is connected to the side of a water passage hole 11b formed in the water faucet body 11 of the water tap 10 and an opening / closing cock 11d for opening and closing a flow path to the branch pipe connecting portion 11c. The cap portion 11a is attached to the upper end opening of the water passage hole 11b and sealed.

  The expanded metal pipe 12 is made of copper, iron, steel, aluminum, aluminum alloy, or the like, and its upper end is disposed integrally or separately at the lower portion of the water passage hole of the water faucet body 11, and its lower end side is the pipe portion T. After being inserted into the mounting hole A formed at the top, the pressing portion of the diameter expander, which will be described later, is inserted into the water passage hole 11b with the upper part opened, and the diameter is expanded into a curl shape or a hook shape. ing.

  The seal packing member 13 is formed of a synthetic resin, rubber or the like into a substantially cylindrical shape with a flange, and is deformed by applying pressure, and is made of an elastic body having a predetermined elastic deformation capability and mechanical strength. As a result, the seal packing member 13 is inserted between the pipe support member 14, the pipe portion T, and the diameter-expanded metal pipe 12 to be crimped and deformed, thereby preventing water leakage from the gap and piping the water faucet 10. It has the function of securely fixing the portion T at a predetermined position.

  The pipe support member 14 is made of a metal such as aluminum, iron, copper, or stainless steel, or a synthetic resin such as polyethylene or polyimide, and is formed in a substantially divided cylindrical shape as a whole by dividing the cylindrical body into a predetermined size. The thickness is 1 to 5 mm, and a pipe support surface having a predetermined curvature is provided, and the pipe support surface is placed in close contact with a predetermined position on the pipe portion T. It is to be noted that positioning stoppers such as positioning holes and positioning protrusions for fixing the pipe support member 14 to a predetermined position of the pipe part T are provided on the pipe support surface, whereby the water faucet 10 is attached. Work efficiency may be improved.

Subsequently, a method for attaching a water faucet for installing the water faucet 10 according to the embodiment of the present invention configured as described above in the pipe part T will be described with reference to the drawings.
FIGS. 6-10 is explanatory drawing of the procedure (1) -procedure (21) in the attachment method of the water faucet which attaches a water faucet to piping parts, such as a water pipe.

  First, in the attachment preparation process shown in the procedure (1) of FIG. 6, the pipe support member 14 is disposed at a predetermined position of the pipe portion T. At this time, projections, recesses, grooves and the like (not shown) are provided at predetermined positions of the pipe portion T. The pipe support surface of the pipe support member 14 formed with a positioning locking portion (not shown) such as a positioning hole or a positioning protrusion that fits into the projection or groove can be fitted and reliably positioned at a predetermined position. The workability of the water faucet installation is improved.

In the next procedure (2), the piercing machine having a drill for drilling and the magnifying machine for expanding the diameter of the tip of the magnifying metal pipe are exchanged and attached so as to cover the outer surface of the pipe support member 14. In addition, a gate valve device (water faucet mounting device) 20 having a water stop gate for sealing the opening after drilling is arranged, and the chain 21 and a band are wrapped around the gate valve device and fixed. The curved sealing surface at the bottom is crimped onto the pipe support member 14.
The mounting preparation process is completed by the above procedure (1) and procedure (2).
In addition, 22 is a gate handle for opening and closing the water stop gate, 23 is a water faucet opening / closing lever, and 24 is a drain valve for discharging water flowing out from the pipe T into the gate valve 20 through the hose 25. .
The following five points should be noted in the above procedure (2).
(1) Thoroughly clean the contact portion between the piping portion T and the gate valve device 20 or the piping support member 14. (2) A pipe support member 14 suitable for the pipe diameter of the pipe part T is attached in advance so as not to cause water leakage. (3) Check the operating state of the gate handle 22, the faucet opening / closing lever 23, and the drain valve 24 and leave them all open. (4) Check that there is no deformation in the slot at the tip of the water faucet opening / closing lever 23. (5) Tighten the chain 21 evenly around the piping part T.

  In the procedure (3), the drilling machine 26 is arranged on the gate valve 20 and the drill 27 is attached in advance. At this time, in order not to damage the water stop gate, the open state of the gate valve 20 is confirmed by the gate opening / closing window 28 provided in the gate valve device 20, and the open state of the drain valve and the operation of the leakage breaker are confirmed. In the following procedures, a part of the mounting state of the chain 21 and the like is omitted and displayed.

In step (4), the drill 27 is lowered to the outer surface of the pipe support member 14, the power switch is turned on, and the feed handle 28 is rotated to pierce the pipe portion T from above the pipe support member 14 while lowering the tip of the drill 27. .
At this time, in order not to make a hole in the water stop gate, the feed handle 28 is turned and the tip of the drill 27 is applied to the outer surface of the pipe portion T, and then the switch is turned on.
Further, when water comes out from the hose 25 connected to the drain valve 24 as the drilling operation proceeds, the rotation speed of the feed handle 28 is decreased. If the rotational speed is made higher than the predetermined speed, it is not preferable because mortar covered with the pipe part T is peeled off or burrs are easily formed on the coating layer of the pipe part T.

  In step (5), the tip of the drill 27 is further lowered to chamfer the surface of the opened hole using a chamfering blade or the like. At this time, the burr is removed by slightly touching the cutting edge portion of the surface 27 of the drill 27.

  In procedure (6), the drill 27 is pulled up and the drain valve 24 is closed. At this time, chips such as chips are completely discharged by the water flow accompanying the sudden opening and closing of the drain valve 24.

  In the next procedure (7), the water stop gate of the gate valve device 20 is closed by operating the gate handle 22, and then the drilling machine 26 is removed from the gate valve device 20 as shown in procedure (8).

In this way, the drilling process of the procedure 3 to the procedure 8 is completed, and the preparation for moving to the subsequent diameter expansion process of the procedure 9 to the procedure 21 is completed.
Other matters to be noted in the above drilling process are as follows.
(1) If the surface of the water pipe is rough and a large amount of water is likely to leak from the gap with the pipe support member 14 that becomes the seal surface of the gate valve device 20, the seal is strengthened with liquid packing or the like. Alternatively, the surface should be smoothed with a file. (2) When machining a color tube that does not flow, remove any chips and burrs that remain on the machined surface. (3) Since the cutting edge of the drill 27 is easily damaged in the mortar-coated tube and the mortar tube, and the damaged drill 27 is likely to have burrs on the painted tube and the like, it is desirable to use a dedicated mortar tube and painted tube drill.

The procedure (9) shown in FIG. 8 is a step of performing an initial setting of the diameter expanding process. Here, the upper limit of the lifting handle 30 of the diameter expanding machine 29, the lower limit of the spindle handle 31, and the like are set. Further, after cleaning the rack gear 32 and confirming that there is no looseness when the hook for rolling the diameter-enlarged metal tube 12 of the water faucet body 11 attached to the tip of the rack gear 32 is fixed, the hook 35 which is a pressing portion is used. Storing. In addition, in order to regulate the position of the hook 35 rotated in the circumferential direction in a stepwise manner, the ratchet knob 33 for adjusting a ratchet (not shown) built in the diameter expander 29 is turned so that the handle can be operated. Keep it.
Next, the seal packing member 13 is mounted on the diameter expanding metal tube 12 of the water faucet body 11 and assembled in the diameter expanding machine 29.
Here, the rotation state of the opening / closing cock 11d of the water faucet body 11 is confirmed, and the seal packing member 13 and the end surface of the main shaft are aligned. Furthermore, a lubricant can be applied to the mounting portion or the like as required.

In the procedure (10) shown in FIG. 8, the diameter expander 29 is attached to the gate valve device 20 with the water stop gate closed.
At this time, it is confirmed in advance that the water faucet opening / closing lever 23 is in the horizontal position (open position).

  In step (11), the water stop gate of the gate valve device 20 is opened by rotating the gate handle 22. At this time, the open / close state of the water stop gate can be confirmed from the gate opening / closing window provided in the gate valve device 20.

  In step (12), the position of the diameter expanding machine 29 is lowered by pushing down the lifting handle 30. The lifting handle 30 is turned strongly until it stops.

In step (13), the lock knob 34 is turned to project the hook (pressing portion) 35.
The lock knob 34 is turned firmly until it stops, and the hook 35 is firmly fixed. Check the operation of the earth leakage breaker.

In step (14), the spindle handle 31 is operated to raise the spindle, and the hook 35 is brought into close contact with the end of the expanded metal pipe 12.
Thus, the green lamp is turned on when the spindle rises to the range where diameter expansion is possible.

In step (15), a ratchet is inserted and automatic operation is started. Here, it stops automatically in about 3 minutes and the green lamp goes off.
When the red line R below the spindle handle 31 is not hidden and automatically stops, it is determined that the state is normal.

In step (16), the ratchet is removed, the inching switch is operated to lower the spindle, and the spindle handle 31 is further lowered to the lowest position.
Be sure to remove the ratchet when pressing the inching switch.
Press the jog switch for a moment.

  In step (17), the lock knob 34 is turned to house the hook 35 in the main body.

  In step (18), the lifting handle 30 is turned to pull up the diameter expander 29.

  In step (19), an operation of closing the opening / closing cock 11d of the water faucet body 11 using the water faucet opening / closing lever 23 is performed.

  In the procedure (20), the diameter expander 29 and the gate valve device 20 are removed from the pipe part T, and the water faucet body 11 is rotated in a predetermined direction to fix the position of the branch pipe connection part 11c.

In step (21), the cap portion 11a is attached to the upper end of the water passage hole 11b of the water faucet body 11 to complete the attachment of the water faucet 10.
In addition, it determines with it being favorable if the attachment state of the water faucet 10 in the above diameter expansion processes satisfies the following three terms.
(1) The red line R of the main shaft disappeared and stopped automatically. (2) The water faucet 10 is not greatly inclined with respect to the pipe part T. (3) Even if the water faucet 10 is shaken, it does not shake.

As described above, the water faucet attachment method in the present embodiment is
Since the pipe support member is fixedly disposed at the water faucet attachment position of the pipe portion and the seal surface of the gate valve device 20 having the water stop gate is crimped to the pipe support member 14 and positioned, When installing the water faucet 10 on resin piping such as vinyl chloride, the rigidity of the water faucet mounting portion is increased and the attachment is made by interposing a pipe support member having a high strength to the mounting portion. Work such as positioning and drilling work can be performed efficiently.
Further, a perforation step of perforating the pipe support member 14 and the pipe portion T to form a diameter-enlarged metal tube insertion hole, and a lower end periphery of the diameter-expanded metal tube 12 being curled while rotating the pressing portion of the diameter expander 29 Since it has a diameter expanding step that is caulked and fixed by spreading, it does not require a high degree of processing accuracy to attach the water faucet 10, and can be widely applied to thin metal pipes and soft resin pipes. Moreover, the attachment process to the piping part T can be performed efficiently.
Further, when the pipe portion T is made of vinyl chloride or the like, the pipe support member 14 is pressed by the water stop gate portion of the gate valve device 20 when the water faucet 10 attached to the pipe portion T is pulled out for some reason. Accordingly, the excavation around the portion to be perforated can be suppressed, and the replacement work or the installation work of the water faucet 10 can be easily performed.

  The present invention provides a water faucet in which a branch pipe can be easily disposed in a resin pipe or an iron pipe such as a water supply pipe or a water pipe, or a resin or concrete-covered pipe, etc. Applicable to the field of faucet attachment methods. This provides a water faucet with excellent durability and sealability at the water faucet mounting part, and versatility that can be widely applied to metal piping and resin piping without requiring high processing accuracy. Thus, it is possible to provide a water faucet attachment method that can efficiently perform the attachment step and is excellent in workability and economy.

It is a perspective view of a water faucet concerning an embodiment of the invention. It is the partially broken sectional view. It is the front view. FIG. It is the side view. It is explanatory drawing of the procedure (1)-(4) in the attachment method of a water faucet. It is explanatory drawing of the procedure (5)-(8) in the attachment method of a water faucet. It is explanatory drawing of the procedure (9)-(12) in the attachment method of a water faucet. It is explanatory drawing of procedure (13)-(16) in the attachment method of a water faucet. It is explanatory drawing of the procedure (17)-(21) in the attachment method of a water faucet.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Water faucet 11 Water faucet body 11a Cap part 11b Water passage hole 11c Branch pipe connection part 11d Opening / closing cock 12 Expanded metal pipe 13 Seal packing member 14 Piping support member 20 Gate valve device (water faucet attachment device)
21 Chain 22 Gate handle 23 Water faucet opening / closing lever 24 Drain valve 25 Hose 26 Punching machine 27 Drill 28 Gate opening / closing window 29 Diameter expansion machine 30 Lifting handle 31 Spindle handle 32 Rack gear 33 Ratchet knob 34 Lock knob 35 Hook (pressing part)

Claims (4)

(A) A water faucet having a branch pipe connecting portion in which a branch pipe is screwed to a side portion of a water passage hole formed with a cap portion that is formed so as to penetrate vertically inside the cap portion and seal the upper opening. The body,
(B) The lower end passes through a mounting hole formed in a peripheral wall of a pipe portion such as a metal pipe or a resin pipe to which the upper end side is connected or fixed to the lower opening of the water passage hole and the water faucet body is attached. A diameter-expanded metal tube that expands the tip in a curled shape and fixes the water faucet body to the pipe part;
(C) a seal packing member made of an elastic body made of a synthetic resin or rubber, which is penetrated through the diameter-expanded metal tube and attached to the lower part of the water faucet body and held;
(D) Metal or synthetic resin made of a substantially divided cylinder having a pipe support surface that is interposed between the seal packing member and the pipe part and that fits the peripheral wall surface of the pipe part. A water faucet comprising a piping support member.   2. The water faucet according to claim 1, wherein the pipe support member includes a positioning locking portion such as a positioning hole and a positioning projection for fixing the water faucet body at a predetermined position of the pipe portion.   The water faucet according to claim 1 or 2, further comprising a fixing auxiliary member such as a wire or a band that winds and reinforces the piping support member attached to the piping portion. A water faucet attachment method for attaching the water faucet according to any one of claims 1 to 3 to a pipe part such as a metal pipe or a resin pipe,
After the pipe support member was fixedly arranged at the water faucet attachment position of the pipe section, the drilling machine having a drill and the diameter expanding machine for expanding the diameter of the metal pipe were replaced and attached, and the drilling machine was drilled. An attachment preparation step of positioning the seal surface of the water faucet attachment device provided with the water stop gate for sealing the opening on the pipe support member;
After attaching the drilling machine to the water faucet mounting device and drilling the pipe support member and the pipe part using the drill to form an enlarged metal pipe insertion hole into which the enlarged metal pipe is inserted A drilling step of closing the water stop gate and removing the drilling machine from the water faucet mounting device;
After opening the water stop gate, the diameter-enlarged metal pipe tip of the water faucet body having the seal packing member is inserted into the diameter-enlarged metal pipe insertion hole, and the tip hooks from the upper part of the water passage hole. The diameter expanding machine is inserted while having a pressing portion that has a pressing portion that opens in a shape and presses the lower end periphery of the expanded diameter metal tube toward the upper outer side, and rotates the pressing portion along the lower end periphery. A peripheral edge of the metal tube insertion hole is formed by holding the elastic force of the seal packing member interposed between the pipe support member and the expanded metal tube by expanding the lower end periphery of the metal tube in a curled shape. And a diameter expansion step of caulking and fixing the lower end peripheral edge of the diameter-expanded metal pipe to the section.

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