JP2625345B2 - Mounting method and device for water faucet - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for installing a seismic faucet which is attached to a branch port formed in a large-diameter fluid pipe such as a water pipe.

[0002]

2. Description of the Related Art A water tap of this type is conventionally known as shown in FIG. Reference numeral 01 denotes a water faucet, and a hollow cylindrical metal fitting with an upper and lower opening formed at the lower end portion with a large-diameter portion 02.
And a rubber ring fitted and mounted on the outer periphery of the cylindrical fitting 02
04, a washer 05, and a tightening nut 06 screwed into a male screw 07 formed at the upper end of the cylindrical metal fitting 02. The large-diameter portion 03 is a large-diameter annular flange portion 08, which is formed at the lower end through a step portion 09 and a tapered portion 010. Reference numeral 011 denotes an annular projection formed at the lower end of the rubber ring 04. Reference numeral 012 denotes a branch port formed by drilling a fluid pipe 013. Here, the rubber ring 04 is screwed with a tightening nut 06 to form a hollow cylindrical metal fitting. 02 is pressed.

[0003]

By the way, the conventional water tap 01 and the apparatus to which the tap is attached have the following various problems. (1) Since the outer diameter of the flange portion 08 of the cylindrical metal fitting 02 is smaller than that of the branch port 012, if a detaching force acts on the water tap 01, an effect of preventing the rubber ring 04 from being removed more than the shearing force cannot be expected. This is the same as in the case where a coil spring is annularly embedded in the rubber ring 04 because the spring escapes toward the inner surface of the tube. (2) Since a circular hole is formed in the fluid pipe 013 as the branch port 012, the hole edge on the inner surface of the pipe is not a circle on a horizontal plane, but a circle formed on a curved surface. There is a difference in height with the peripheral part. Since the tapered portion 010 and the flange portion 08 of the cylindrical metal fitting 02 are circles on a horizontal plane, even if the rubber ring 04 is pressed against the branch port 012, the compressed state becomes nonuniform, and there is a concern about fluid sealing. In particular, there is a problem near the hole edge in the pipe axis direction. (3) Since the rubber ring 04 is sandwiched between the tightening nut 06, the tapered portion 010, and the flange portion 08 via the washer 05, the washer 05 and the outer surface of the tube are in contact with each other, so that it is difficult to bend against a lateral force. (4) When the ground fluctuates due to an earthquake or the like and a large lateral force is applied to the water faucet 01 and tilts, the non-uniformity of the compression ratio in (2) further increases, and the pressure input on one side cannot be maintained. Since the rubber ring 04 is sandwiched between the flange portion 08, the tapered portion 010, and the washer 05, the rubber ring 04 may be damaged if the stopper moves. (5) Chips come out when piercing tube 013. This chip is located at the top of the tube, and when the tightening nut 06 is tightened in this state, the chip is caught between the washer 05 and the tube 013. There is no problem with the sealing mechanism in this state, but if the chips that have been trapped move due to vibrations caused by an earthquake or other work, vibrations caused by a vehicle, etc., and fall off from the lower part of the washer 05, only the thickness of the chips The faucet 01 is lowered, the press-fit state of the rubber ring 04 is released, and the sealing effect is greatly reduced. (6) If a cleaning bullet is sent with pressurized water or the like to clean the inner surface of the pipe after attaching the water tap 01, the cleaning bullet may be caught on the flange portion 08 of the water tap 01. (7) Since the rubber ring 04 is sandwiched between the tightening nut 06, the tapered portion 010, and the flange portion 08, the body of the cylindrical metal fitting 02 always receives a tensile load. For this reason, there is also a relationship between the screws on the upper part of the body, and the thickness of the body must be increased. Tube 013
Since the inner diameter of the cylindrical fitting 02 is smaller than the diameter of the branch port 012, the efficiency with respect to the diameter of the perforated hole is reduced in consideration of the flow rate and the like.

Accordingly, the present invention solves the above-mentioned conventional problems and can improve the force of preventing the fluid pipe from being detached from the branch port. It is possible to eliminate the unevenness of the compression rate of the rubber ring, to make it soft and bend even when a lateral force is applied, to prevent the rubber ring from being damaged even if it bends, and to prevent the sealing function from deteriorating. Moreover, even if chips are left at the top of the pipe, it does not affect the sealing function.In addition, even if a cleaning bullet is inserted into the inner surface of the pipe, it will not be caught. It is an object of the present invention to provide a method and an apparatus for mounting a water faucet that can be made smaller.

[0005]

According to a first aspect of the present invention, there is provided a mounting method comprising: a shaft hole having an opening at an upper end and a bottom formed on a tapered surface inclined downward.
A main shaft having a notch formed in a peripheral wall facing the tapered surface of the shaft hole, a hook member projecting window, a movable shaft fitted vertically into the shaft hole of the main shaft, and a pin at a lower end of the movable shaft. A hook member that is pivotally supported at a predetermined angle with respect to the axis, slides on a tapered surface of the main shaft by downward movement of the movable shaft, and tilts to project a molding surface outward from the window. A flange formed at the lower end of the mounting member on the outer peripheral surface of the lower end of the main shaft of the diameter increasing jig and a flange formed at the upper end of the thin cylindrical metal fitting are engaged with the mounting member. After the rubber ring is fitted and supported so that the flange formed at the upper end thereof abuts against the lower end surface of the cylindrical metal fitting, the diameter expansion supporting the cylindrical metal fitting, the mounting member and the rubber ring is performed. Push the jig from the lower end side into the branch port perforated in the fluid pipe and press-fit it. After the flange of the rubber ring contacts the outer peripheral surface of the fluid pipe, and the flange of the mounting member contacts the upper surface of the flange of the rubber ring, the flanges abut to project below the lower end of the cylindrical fitting. The movable shaft is moved downward with respect to the main shaft, and the hook member is tilted so that the molding surface protrudes outward from the window.After that, the main shaft is rotated, and the main shaft is gradually moved up and down little by little. The lower end of the metal fitting is pressed by the forming surface of the hook member, and the diameter is increased in a trumpet shape from the inside to the outside to form an enlarged portion having an outer diameter larger than the diameter of the branch port.

According to a second aspect of the present invention, in the first aspect, before the cylindrical fitting, the attaching member and the expanding jig supporting the rubber ring are pushed into the branch port from the lower end side and press-fitted,
A saddle having a water stop valve and a water drain valve is attached to the outer periphery of the fluid pipe in a tubular portion into which a diameter-enlargement jig can be fitted, and a cutting port of a drilling machine is inserted from the tubular portion to pierce a branch port in the fluid pipe, Chips and the like generated by the perforation are discharged by a drain valve, and the water stop valve is closed to remove the drilling machine.

According to a third aspect of the present invention, there is provided an attachment device having a shaft hole having an open upper end and a bottom formed on a tapered surface inclined downward, and a hook member protruding from a peripheral wall opposed to the tapered surface of the shaft hole. A main shaft with a notch formed therein, a movable shaft fitted into the shaft hole of the main shaft so as to be movable up and down, and a lower end of the movable shaft pivotally supported by a pin so as to be tiltable at a predetermined angle with respect to the axis, and movable. A diameter increasing jig composed of a hook member that slides on a tapered surface of the main shaft by the downward movement of the shaft and tilts to project a molding surface outward from the window, and a movable shaft is formed by moving the main shaft of the diameter increasing jig. The lower end of the cylindrical metal fitting is pressed by the molding surface of the hook member that is tilted by the downward movement of the movable shaft and protrudes outward from the window. Expand the lower end of the bracket in a trumpet shape from the inside to the outside, and make the outer diameter equal to the diameter of the branch port. Also comprises a press diameter device for forming the large diameter portion, characterized in that a manual handle with lifting rotary mechanism for elevating and rotating the spindle of diameter jig in this press expanded device.

According to a fourth aspect of the present invention, in the third aspect, a saddle having a tubular portion into which an expanding jig can be inserted is mounted on the outer periphery of the fluid pipe such that the tubular portion faces the branch port. A water stop valve and a drain valve are mounted on the cylindrical portion of the saddle, and a press expanding device is detachably mounted on the distal end side of the saddle so as to be able to move up and down, and a mounting member is held by the press expanding device. An adapter that moves up and down together with the press expanding device between the cylindrical portion and the expanding device is attached.

[0009]

As described above, the water faucet attached to the branch port of the fluid pipe has an inner surface at the lower end portion of the cylindrical fitting formed as an enlarged portion having an outer diameter larger than that of the branch port. Due to the enlarged diameter portion, it is strong against the force of exit from the branch port.

[0010]

FIG. 1 is a vertical sectional front view showing a water pipe according to an embodiment of the present invention, in which a water tap is attached to a branch port of a fluid pipe. 1
Is a water faucet, a thin hollow cylindrical metal fitting 2 with upper and lower openings formed at its lower end in an enlarged diameter portion 3, and a rubber ring 4 fitted and mounted on the outer periphery of the cylindrical metal fitting 2. And a mounting nut 5 fitted to the outer periphery of the cylindrical metal fitting 2 above the rubber ring 4. Reference numeral 6 denotes a ductile pipe as a fluid pipe, which comprises a main pipe 7 and a cement mortar lining layer 8 lined on the inner surface thereof. Reference numeral 9 denotes a branch port formed in the ductile tube 6. The inner surface of the enlarged diameter portion 3 of the cylindrical metal fitting 2 is formed in a trumpet shape (convex curved surface) such that the outer diameter is larger than the branch opening 9, and the outer edge of the enlarged diameter portion 3 is located near the inner surface of the pipe 6. doing.

An outer annular flange portion 10 is formed at an upper end portion of the rubber ring 4 protruding from the branch opening 9, and an inward annular projection 11 is formed at a lower end portion facing the inner surface of the pipe 6 from the branch opening 9. I have. When the water tap 1 is inserted into the branch port 9 as described later, the annular protrusion 11 is turned outward from the previous inward.
The mounting nut 5 has a hollow cylindrical shape with upper and lower openings larger in inner and outer diameters than the cylindrical metal fitting 2, and an inward annular flange portion 12 is provided at the lower end portion to abut on the upper surface of the flange portion 10 of the rubber ring 4. . The inner diameter of the flange portion 12 is slightly larger than the outer diameter of the cylindrical metal fitting 2. Reference numeral 13 denotes a female thread for valve mounting, which is formed on the inner peripheral surface of the mounting nut 5. Further, a flange portion of the mounting nut 5 is provided at an upper end portion of the cylindrical fitting 2.
An outwardly-facing annular flange portion 15 is provided in contact with the upper surface of 12. 16 is a packing.

In the above description, as shown in FIG. 2, the inner diameter e of the female thread portion 13 of the mounting nut 5 is the same as that of the flange portion of the cylindrical fitting 2.
15 is slightly larger than the outer diameter f, and the outer diameter d of the barrel of the cylindrical metal fitting 2 is slightly larger than the inner diameter b of the slightly larger cylindrical metal fitting guide 18 formed at the upper end opening of the rubber ring 4. The diameter D of the branch 9 is slightly larger than the outer diameter a of the trunk of the rubber ring 4.

FIGS. 3, 4 and 5 show a diameter-expanding jig for forming the lower end of the cylindrical fitting 2 of the water faucet 1 in the diameter-expanded portion 3. FIG. The diameter expanding jig 20 has a shaft hole 22 formed at a tapered surface 21 whose upper end is open and whose bottom is inclined downward, the tapered surface of the shaft hole.
A main shaft 25 having a notch formed with a hook member projecting window 23 on a front peripheral wall facing the main shaft 21, a movable shaft 26 fitted in a shaft hole 22 of the main shaft 25 so as to be vertically movable, and a lower end of the movable shaft 26. The bifurcated part is pivotally supported by a pin 27 so that it can be tilted at a predetermined angle with respect to the axis,
The hook member 29 slides on the tapered surface 21 of the main shaft 25 by the downward movement of the main shaft 25 and tilts to project the forming surface 28 outward from the window 23. The shaft hole 22 is drilled at a position slightly eccentric with respect to the center of the main shaft 25 so that the peripheral wall with the window 23 is thicker than the peripheral wall on the side opposite to the window 23 and can withstand a strong bending force. Has become. Another window 30 on the rear wall opposite window 23
Are notched.

In this embodiment, the tapered surface 21 is formed on a tapered table 32 fixed below the shaft hole 22 of the main shaft 25, and the tapered table 32 is attached by fixing pins 33 and bolts 34. While the tapered surface 21 is inclined, as shown in FIG.
A locking surface 38 for locking one locking surface 37 of a locking recess 36 formed on the rear surface of the hook member 29 when 28 protrudes from the window 23 is provided. The upper part is a tapered surface 21a with a steep slope, and the lower part is a tapered surface 21b with a gentle slope. Similarly, reference numeral 39 denotes a locking surface on which the other locking surface 40 of the locking recess 36 of the hook member 29 is locked. The locking surface 39 is provided on the upper end outer peripheral surface of the tapered base 32 connected to the lower end of the tapered surface 21b. . Above the molding surface 28 of the hook member 29, the enlarged lower end of the movable shaft 26
A locking surface 43 that locks with a locking surface 42 formed on 41 is provided. The locking surfaces 42, 43 are locking surfaces 39, 40 and locking surfaces 37,
The hook member 29 is locked and positioned together with 38. The molding surface 28 protrudes downward from the outer peripheral surface of the main shaft 25 in a tilted state in which the hook member 29 is positioned by the locking of the locking surfaces (FIG. 6). The upper portion of the enlarged diameter portion 3 is prevented from buckling when the lower end portion is expanded while pressing.

A spline 45 for attaching a handle, which will be described later, is formed on an outer peripheral surface of an upper end portion of the main shaft 25, and an upper end of the spline 45 is used for a cap nut 47 for fixing an adjusting nut 46 screwed to an upper male screw of the movable shaft 26. A screw 48 is formed concentrically with the shaft hole 22 of the movable shaft 26. The adjustment nut 46 adjusts the vertical movement position of the movable shaft 26 by loosening or tightening by screwing into the upper end male screw of the movable shaft 26 as described above. The cap nut 47 is removed when the movable shaft 26 moves up and down, and is attached in a tilted state in which the hook member 29 is positioned.
And locks the spindle 25. At the same time hook member 29
Of the movable shaft 26 is also pressed and fixed by the enlarged portion 41 at the lower end of the movable shaft 26. An elevating screw 49 is formed on the outer peripheral surface of the main shaft 25 below the spline 45 to be screw-fitted to an elevating member described later. The outer diameter of the movable shaft 26 is larger than the circumferential width of the window 23. 50 is an O-ring groove, and 51 is an O-ring.

The above-described diameter-expanding jig 25 is connected to a press diameter-expanding device 53 shown in an enlarged manner in FIGS. This press expanding device 53 is provided with bolts and nuts
It is attached to a saddle 55 detachably attached by 54 so as to be able to move up and down freely. That is, the saddle 55 is integrally provided with a cylindrical tubular portion 56 facing the branch port 9, and a large-diameter tubular portion 57 is attached to the upper end of the tubular portion by screw fitting. A male screw 58 is formed on the outer periphery of the upper part of the large-diameter cylindrical portion 57, and is formed on the inner peripheral surface of the lower recess 59 of the male screw. Have been. As a result, the main body 61 is rotated so that the main body 61 can be moved up and down with respect to the large-diameter cylindrical portion 57 by screwing the two screws 58 and 60 together. The main body 61 has an internal chamber 62 in the upper part, the main shaft 25 is disposed so as to vertically penetrate the internal chamber 62 and the large-diameter cylindrical portion 57, and a handle 63 for rotating the main shaft 25 is provided at the upper end of the main shaft. It is fitted with a spline 45 and fixed with a cap nut 47.

A recess 65 is formed at the bottom of the inner chamber 62 through which the main shaft 25 passes, and a rotation stopping member 64 is fitted into the recess. An annular groove 64a is formed on the outer peripheral surface of the rotation stop member 64, and a rotation stop bolt 74 is screwed into the groove from outside the main body 61. By tightening the bolt 74, the tip of the bolt 74 comes into contact with the bottom surface of the groove 64a, whereby the rotation stopping member 64 is fixed to the main body 61 in a normal state. Spindle 25
The lower half of the elevating member 67 screwed to each other is provided with a detent groove 68 provided on the outer periphery thereof on the inner periphery of the detent member 64. Although it is possible to move up and down by engaging with the rotation stopping projection 69, it is accommodated non-rotatably. At the upper end of the elevating member 67, a disc-shaped top plate 70 is provided. On the lower side of the top plate 70 and on both sides of the elevating member 67, there are provided projections 67a that come into contact with rollers 78 of a lever 75 described later. Between the top plate 70 and the lid 71 of the internal chamber 62, there is provided a spring 72 for pushing the elevating member 67 downward. 73
Is a positioning projection of the spring 72. On both sides (up and down sides in FIG. 9) of the elevating member 67, a horizontal lever 75 is disposed between a support piece 76 erected at the bottom of the internal chamber 62 and the main body 61 by a shaft 77 so as to be pivotally mounted. A roller 78 is rotatably mounted on a shaft 79 at an end of the lever 75 on the lifting member 67 side. The opposite sides of the two levers 75 from the roller 78 are connected by a connecting member 75a. A drive shaft 80 is supported on the main body 61 in an orthogonal direction above the opposite side of the rollers 78 of both levers 75, and mounting plates 82 are fixed to both ends of the drive shaft. roller
83 and 84 are rotatably mounted on shafts 85 and 86.

A handle 88 is attached to one end of the drive shaft 80 that penetrates the main body 61, and is fixed with a nut 89. When the drive shaft 80 is rotated by operating the handle 88 with this configuration, the roller 83 or 84 on the mounting plate 82 presses the lever 75 to rotate the lever 77 clockwise about the shaft 77 in FIG. The protrusions 67a provided on both lower sides of the top plate 70 of the elevating member 67 are pushed up by the rollers 78, the elevating member 67 is raised against the spring 72, and the main shaft 25 screwed to the elevating member 67 is raised. Is possible. When the main shaft 25 is rotated by operating the handle 63, the main shaft 25 moves up and down while rotating with respect to the elevating member 67 fitted with the screw.

In FIG. 8, reference numeral 90 denotes a cylindrical adapter holding member, which is fitted and disposed between the large diameter jig 20, the cylindrical portion 56 and the large diameter cylindrical portion 57. The upper end of the adapter holding member 90 is a bolt 91
The adapter 92 is spline-engaged at its lower end and is detachably attached to the lower end by a ball plunger or the like. An external thread 93 is formed on the outer peripheral surface of the lower end of the adapter 92 to be screwed with the female thread portion 13 of the mounting nut 5 (FIG. 11), and the mounting nut 5 is held by screwing both screws. Also, 95 and 96 are a water stop valve and a drain valve mounted on the cylinder portion 56, 97 is an O-ring mounted in the O-ring groove 50, 98 is a packing, 99 is an O-ring, and 100 is a dismantling jig mounting portion. And 101 are bolts for the lid 71, 102 in FIG. 9 is a bearing cover, and 103 is a bolt for attaching the bearing cover.

A method of attaching the water faucet 1 to the branch port 9 of the pipe 6 will be described below.

First, a piercing machine (not shown) is attached to the upper end of the cylindrical portion 56 of the saddle 55 attached to the pipe 6, and the pipe 6 is pierced to form the branch port 9. After formation, the cutting edge of the drilling machine is raised above the valve 95, the valve 95 is closed, and the drilling machine is removed. Before closing valve 95, swarf generated during drilling is removed from valve 96.
Open and drain. Next, the cylindrical fitting 2 is passed through the mounting nut 5 from the lower end side, and the flange portion 15 is engaged with the flange portion 12 of the mounting nut 5. The female thread of the mounting nut 5
An external thread 93 of the adapter 92 is screwed into 13 and tightened and fixed. Then, the upper end of the adapter 92 is inserted into and attached to the lower end of the adapter holding member 90. Thus, the mounting nut 5 and the cylindrical fitting 2 are held by the adapter holding member 90 via the adapter 92. In this state, the lower end of the diameter expanding jig 20 protrudes from the lower end surface of the cylindrical metal fitting 2. After a while
The rubber ring 4 is inserted into the lower end of the diameter increasing jig 20 so that the lower end surface of the diameter increasing jig 20 contacts the upper surface of the annular projection 11.

Next, the large-diameter cylindrical portion 57 screw-fitted to the main body 61 of the press expanding device 53 is attached to the cylindrical portion 56 of the saddle 55 by the adapter holding member 90.
Are screw-fitted so as to be arranged in the cylindrical portion, and the press expanding device 53 is connected to the cylindrical portion 56 of the saddle 55 in an upright state. At this time, the lower end surface of the rubber ring 4 inserted and attached to the lower end portion of the diameter increasing jig 20 as described above is above the valve 95. After connection, the valve 95 is fully opened.

Next, the main body 61 is rotated and lowered with respect to the large-diameter cylindrical portion 57. At the same time, the adapter holding member 90 and the diameter increasing jig 20 are also lowered, gradually inserted from the lower end of the rubber ring 4 into the branch port 9, and the flange 10 comes into contact with the outer peripheral surface of the pipe 6 (FIG. 11). When the main body 61 is further lowered, the guide portion of the rubber ring 4
The cylindrical fitting 2 is pushed into the projection 18 and protrudes from the lower end surface of the rubber ring 4, so that the flange portion 10 of the rubber ring 4 is strongly pressed between the outer peripheral surface of the pipe 6 and the mounting nut 5 (FIG. 12). . As a result, the annular projection 11 of the rubber ring 4 is inverted from the inward direction to the outward direction, and the rubber ring 4 is pressed into the space between the rubber ring 4 and the rim of the branch port 9, and between the rubber ring 4 and the cylindrical metal fitting. 2, the seal between the outer peripheral surfaces is maintained. At this time, the lower end surface of the main shaft 25 of the diameter increasing jig 20 is slightly protruded from the lower end surface of the cylindrical metal fitting 2.

Next, the handle shaft 63 of the press expanding device 53 is operated to lower the main shaft 25 while rotating it, so that the pin 27 of the hook member 29 is lower than the lower end surface of the cylindrical fitting 2. Then, loosen the adjustment nut 46 and move the movable shaft 26 to the main shaft 25.
Move down against When the movable shaft 26 starts to move downward, the hook member 29 slides down on the tapered surface 21a and descends to the tapered surface 21b.
Transfer to Still descending, locking surface 37 and locking surface 38,
The locking surface 39 and the locking surface 40, and the locking surface 42 and the locking surface 43 respectively abut and lock (FIGS. 7 → 8). After locking, the adjustment nut 46 on the upper part of the movable shaft 26 is fixed with the cap nut 47. As a result, the hook member 29 is firmly locked, and the molding surface 28 is in a tilted state protruding from the window 23 (FIG. 13).

Next, the handle 63 is operated to rotate the main shaft 25 in the opposite direction and raise it so that the molding surface 28 of the hook member 29 comes into contact with the lower end surface of the cylindrical metal fitting 2 (FIG. 14). Thereafter, the drive shaft 80 is rotated by operating the handle 88. That is, when the drive shaft 80 is rotated, the roller 83 on the mounting plate 82 presses the lever 75 and rotates clockwise around the shaft 77, whereby the roller 78 moving upward moves the elevating member 67 to the spring 72.
And the main shaft 25 screwed to the elevating member 67 is raised, whereby the lower end surface of the cylindrical fitting 2 is hooked by the hook member 29.
Is pressed from the molding surface 28. Further, when the mounting plate 82 is in the horizontal position while the drive shaft 80 is rotating, the lever 75 is in a free state, and the elevating member 67 is pushed down by the spring 72. In this way, the rotation of the drive shaft 80 is converted into a repetition of the up-and-down movement of the hook member 29, and the pressing and release of the pressing by the forming surface 28 of the hook member 29 are performed. In addition, one rotation of the main shaft 25 by operating the handle 63 also moves up the small pitch. As a result, the diameter of the lower end surface of the cylindrical metal fitting 2 is gradually increased to form a trumpet-shaped enlarged diameter portion 3. 15 to 19 show the state of the diameter expanding operation. The outer diameter of the lower end portion of the cylindrical metal fitting 2 formed in the trumpet-shaped enlarged diameter portion 3 is larger than the diameter of the branch port 9 of the pipe 6. When the diameter is increased, the spindle 25 that moves up and down in small increments (and pivots and moves up and down by the handle 63).
The lower end surface of the cylindrical metal fitting 2 which receives a press from the molding surface 28 of the hook member 29 disposed at the inner side includes the annular projection 11 at the lower end portion of the rubber ring 4 and has an enlarged diameter portion so as to press against the inner surface of the pipe. 3,
The upper part is easily formed without buckling.

When the diameter expansion is completed, the handle 88 is operated to rotate the drive shaft 80 to make the mounting plate 82 almost horizontal as before, loosen the cap nut 47, the handle 63 and the bolt 101, and
1 and the spring 72 are removed, and the rotation stop bolt 74 is slightly loosened (at this time, the tip of the rotation stop bolt 74 is not in contact with the bottom surface of the annular groove 64a), and the disassembly jig (not shown) is attached to the mounting portion 100. When the elevating member 67 is rotated, the rotation stopping member 64 rotates together with the elevating member 67 on the spot, but the elevating member 67 itself is formed by a screw between the female screw 66 of the elevating member and the elevating screw 49 of the main shaft 25. Only the elevating member 67 rises from the mating relationship, and comes off the main body 61 and the main shaft 25. Next, when the main body 61 is rotated to loosen the screw engagement with the large-diameter cylindrical portion 57, the adapter holding member 90 is raised, and the ball plunger portion is disengaged at the spline engagement portion between the holding member and the adapter 92. Separate. Thereafter, when the screw of the large-diameter cylindrical portion 57 is loosened and removed from the cylindrical portion 56, and the saddle 55 is also removed, the water faucet 1, the expanding jig 20 and the adapter 92 remain in the pipe 6 (FIG. 18). Next, the adapter 92 is removed and the packing 16 and the valve 105 are attached (FIGS. 19 and 2).
0). Thereafter, the main shaft 25 is pushed down to raise the movable shaft 26 to house the hook member 29 in the shaft hole 22, and the adjustment nut 46 is tightened to stabilize the hook housing state as shown in FIG. Then, the lower end surface of the main shaft 25 is pulled up above the valve 105 to close the valve, and the main shaft 25 is pulled out to complete the mounting (FIG. 21).

[0027]

According to the first aspect of the present invention, since the water faucet is attached as described above, the following excellent effects are obtained. (1) When a pull-out force acts on the water faucet, the outer diameter of the enlarged-diameter portion at the lower end of the cylindrical metal fitting is larger than the diameter of the branch port, so the endurance force withstands until the enlarged-diameter portion is deformed or broken. (2) Since the rubber ring is pushed out and the cylindrical fitting is press-fitted, regardless of the height difference of the rim of the branch port, the outer rim of the rubber ring and the branch port, and the outer circumference of the rubber ring and the cylindrical fitting. The surface pressure is even, and there is no concern about the sealing mechanism. (3) Even if a large lateral force is applied to the water faucet and tilts, the lateral force can be easily absorbed by the elasticity of the inverted flange at the upper end flange of the rubber ring and the lower end of the rubber ring, It can be easily bent without damaging the rubber ring. (4) When the ductile pipe is pierced, the lower part of the rubber ring after the water faucet is pushed is open even if the lining layer has an unstable shape such as chipping or peeling at the rim of the lining layer. It fits in a position that matches the shape of the edge, and does not affect the compression state of the rubber ring in the water stop portion. (5) Even if chips generated when the fluid pipe is pierced remain at the top of the pipe above the branch port, the upper flange portion of the rubber ring is depressed,
Absorb swarf. Chips do not fall off due to vibrations caused by earthquakes, other works, or vibrations caused by vehicles. If it falls off, it does not affect the compression state of the rubber ring. (6) Even if a cleaning bullet for cleaning the inner surface of the pipe is inserted into the inner surface of the pipe after attaching the water faucet to the fluid pipe, the cleaning bullet may be caught by the enlarged diameter portion of the cylindrical metal fitting. There is no. (7) There is no need to excavate the outer periphery of the fluid pipe to a large extent, and the water can be reliably stopped. (8) Since it is slightly rotated while being repeatedly pressed up (pressed / released) on the forming surface of the hook member from the lower end surface of the cylindrical member of the water faucet while being repeatedly pulled up, a buckling portion is not generated, and the forming surface and the tube are formed. There is little friction on the lower end surface of the metal fitting, and seizure and the like of the enlarged diameter portion do not occur.

According to the invention of claim 2, in addition to the above, a water faucet as described above can be attached under uninterrupted water, which is extremely practical. According to the third aspect of the invention, the same effect as the first aspect can be expected. According to the fourth aspect of the present invention, the same effects as those of the second aspect can be expected, the support of the press expanding device is easy, and the holding of the mounting member and the like at the time of mounting is extremely easy.

[Brief description of the drawings]

FIG. 1 is a vertical sectional front view showing a water tap according to an embodiment of the present invention, which is attached to a branch port of a fluid pipe.

FIG. 2 is a longitudinal sectional front view before mounting showing a dimensional relationship of each part of a water tap, a rubber ring, and a branch port of a fluid pipe.

FIG. 3 is a vertical sectional front view of the diameter expanding jig.

FIG. 4 is a left side view of the same.

FIG. 5 is a bottom view of the same.

FIG. 6 is an enlarged vertical sectional front view showing a state where a molding surface of a hook member of FIG. 3 is protruded.

FIG. 7 is an enlarged vertical sectional front view of a state before a molding surface of the hook member is protruded.

FIG. 8 is a longitudinal sectional front view showing the connection between the diameter expanding jig and the press diameter expanding device.

FIG. 9 is a cross-sectional plan view of the press expanding device taken along line AA of FIG. 10;

10 is a vertical sectional front view of the press expanding device taken along line BB of FIG. 9;

FIG. 11 is a partially enlarged longitudinal sectional front view for explaining the operation.

FIG. 12 is a partially enlarged vertical sectional front view for explaining operation.

FIG. 13 is a partially enlarged longitudinal sectional front view for explaining operation.

FIG. 14 is a partially enlarged longitudinal sectional front view for explaining the operation.

FIG. 15 is a partially enlarged longitudinal sectional front view for explaining the operation.

FIG. 16 is a partially enlarged longitudinal sectional front view for explaining the operation.

FIG. 17 is a partially enlarged vertical sectional front view for explaining the operation.

FIG. 18 is an operation explanatory view in which a part of the diameter expanding jig is omitted.

FIG. 19 is an operation explanatory view in which a part of the diameter expanding jig is omitted.

FIG. 20 is an operation explanatory view in which a part of the diameter expanding jig is omitted.

FIG. 21 is an operation explanatory view.

FIG. 22 is a longitudinal sectional front view showing a state in which a conventional water tap is attached to a branch port of a fluid pipe.

[Description of Signs] 1 minute faucet 2 cylindrical fitting 3 enlarged diameter part 4 rubber ring 5 mounting nut 6 ductile tube 9 branch port 20 enlarged diameter jig 25 main shaft 26 movable shaft 28 molding surface 29 hook member 53 press expanding device 55 Saddle 56 Tube 57 Large diameter tube 61 Main body 67 Elevating member 90 Adapter holding member 92 Adapter 95 Water stop valve 96 Drain valve

 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-53-78420 (JP, A) JP-A-48-12626 (JP, U) JP-A-53-99857 (JP, U) JP-A-50- 23251 (JP, Y2)

Claims (4)

(57) [Claims] An upper end has an opening and a bottom portion has a shaft hole formed in a tapered surface inclined downward, and a hook member projecting window is cut out in a peripheral wall facing the tapered surface of the shaft hole. A main shaft, a movable shaft fitted to the shaft hole of the main shaft so as to be movable up and down, and a lower end of the movable shaft pivotally supported by a pin so as to be tiltable at a predetermined angle with respect to the axis, and a taper of the main shaft by the downward movement of the movable shaft A hook member that slides on the surface and tilts to project the molding surface outward from the window.The jig has a diameter increasing jig. The formed flange and the fitting formed by the flange formed at the upper end of the thin cylindrical metal fitting are fitted with the fitting and the mounting member, and the flange formed with the rubber ring at the upper end is positioned below the cylindrical metal fitting. After being fitted and supported so as to be in contact with the end face, the cylindrical fitting, the mounting member and the rubber The expanding jig supporting the ring is pressed from the lower end side into the branch port drilled in the fluid pipe and press-fitted, and the flange portion of the rubber ring contacts the outer peripheral surface of the fluid pipe, and on the upper surface of the flange portion of the rubber ring. After the flanges of the mounting member come into contact, the contact of the two flanges causes the movable shaft to move downward with respect to the main shaft projecting downward from the lower end of the cylindrical fitting to tilt the hook member so that the molding surface is moved from the window. The main shaft is then rotated outward, and then the main shaft is moved up and down little by little, and the lower end of the cylindrical metal fitting is pressed by the molding surface of the hook member. A method of mounting a water faucet, characterized in that the diameter is increased to form an enlarged diameter portion having an outer diameter larger than the diameter of the branch port. 2. A water stop is applied to a cylindrical portion into which the diameter-expanding jig can be fitted before the diameter-expanding jig supporting the cylindrical fitting, the mounting member, and the rubber ring is pressed into the branch port from the lower end side. A saddle having a valve and a drain valve is attached to the outer periphery of the fluid pipe, a cutting edge of a drilling machine is inserted from the cylindrical portion, a branch port is drilled in the fluid pipe, and chips generated by the drilling are discharged by the drain valve. 2. The method of claim 1, wherein the water stop valve is closed and the boring machine is removed. 3. A shaft member having an opening at an upper end and a bottom portion formed in a tapered surface inclined downward, and a hook member projecting window is formed in a peripheral wall facing the tapered surface of the shaft hole. A main shaft, a movable shaft fitted to the shaft hole of the main shaft so as to be movable up and down, and a lower end of the movable shaft pivotally supported by a pin so as to be tiltable at a predetermined angle with respect to the axis, and a taper of the main shaft by the downward movement of the movable shaft A diameter increasing jig composed of a hook member that slides on a surface and tilts to project a molding surface outward from the window, and a movable shaft that projects a main shaft of the diameter increasing jig from an upper end opening of a shaft hole. As described above, the lower end of the cylindrical metal fitting is pressed by the molding surface of the hook member which is tilted by the downward movement of the movable shaft and protrudes outward from the window, and the lower end of the metal fitting is moved from inside to outside. To form a large-diameter part with an outside diameter larger than the diameter of the branch port. A water faucet mounting device, comprising: a press diameter expanding device; and a lifting / lowering rotating mechanism with a manual handle for raising and lowering and rotating a main shaft of the diameter expanding jig. 4. A saddle having a tubular portion into which an expanding jig can be inserted around the outer periphery of a fluid pipe so that the tubular portion faces a branch port. Valves are mounted, and the press expanding device is removably mounted on the distal end side of these valves so as to be able to move up and down. The mounting member is held by the press expanding device to press the tube between the cylinder and the expanding jig. 4. A device according to claim 3, further comprising an adapter that moves up and down together with the diameter device.