JP2625357B2 - Water tap, its mounting method and device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

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

[0002]

2. Description of the Related Art FIG. 18 shows a conventional type of a water faucet. 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-uniform state 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 or the like remain at the top of the pipe, it does not affect the sealing function, and even if a cleaning bullet is inserted into the inner surface of the pipe, it can be prevented from being caught. It is an object of the present invention to provide a water faucet capable of reducing the inner diameter ratio, a method of mounting the water faucet, and a water faucet device.

[0005]

In order to achieve the above object, according to the present invention, there is provided a water faucet as described above.
The cylindrical metal fitting of the stopper body is made thin, and the inner surface of the lower end of the cylindrical metal fitting is formed in an enlarged diameter portion having a convex curved surface so that its outer diameter is larger than the branch port, and the rubber ring is branched. An outwardly projecting annular flange is formed at the upper end protruding from the mouth, and an annular projection fitted to the flange from above is formed on the lower end surface of the plug body. According to a second aspect of the present invention, in the first aspect,
An annular groove is formed on the lower surface of the rubber ring, and the lower end formed on the enlarged diameter portion of the cylindrical metal fitting is fitted in the groove.

According to a third aspect of the present invention, a saddle has a drill at a lower end in a non-circular hollow cylindrical portion of a saddle detachably mounted on an outer periphery of a fluid pipe, and can protrude outward from a side surface above the drill. A drilling jig having a cutting tool is inserted from above, and on the outer peripheral surface of the drilling jig, in order from the top, a water stop valve body, a tap body of a water faucet, and a rubber ring can be slidably contacted with the hollow cylindrical portion, and The lower end of the cylindrical metal fitting provided at the lower end of the plug body is positioned at the upper end of the rubber ring so that the drilling jig can move up and down and can rotate with respect to the water stop valve body, the faucet main body of the water tap and the rubber ring. It is mounted so that it engages with, and while rotating the drilling jig, it rotates and drills the fluid pipe with a drill to form a hole, and further drills with the bite protruding sideways After turning the jig to increase the diameter of the perforated hole to form a branch port, the water stop valve and the stopcock And with the rubber ring as it is, the drilling jig is set in the state before the lower part is protruded, then it is pulled up from the hollow cylindrical part and pulled out, and the rubber ring and the cylindrical metal fitting are pushed into the branch port by appropriate means and pressed in. So that the upper flange portion of the rubber ring is in contact with the outer peripheral surface of the fluid pipe, the lower end of the cylindrical metal fitting of the stopper body projects below the lower end of the rubber ring, and then a jig for expanding the diameter from above into the hollow cylindrical portion. The diameter-enlargement jig has an opening at the upper end and a shaft hole with a bottom formed on 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 formed with a notch, a movable shaft fitted vertically movably in a shaft hole of the main shaft, 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,
A hook member that slides and tilts by sliding the tapered surface of the main shaft by the downward movement of the movable shaft and projects the molding surface outward from the window, and the lower end of the inserted diameter expanding jig is press-fitted. After projecting downward from the lower end of the cylindrical fitting, the movable shaft is moved downward so that the molding surface of the hook member projects outward from the window, and then the diameter increasing jig is rotated and the diameter increasing jig is rotated. Is moved up and down little by little to press the lower end of the cylindrical metal fitting, and expand the diameter in a trumpet shape from inside to outside to form an enlarged diameter part whose outer diameter is larger than the diameter of the branch port. Features. According to a fourth aspect of the present invention, in the third aspect,
After forming the enlarged diameter portion, a mirror and a light source are attached to the lower end, and an endoscope tube with a lens attached to the upper end is inserted into the hollow cylindrical portion to observe the enlarged diameter portion.

A fifth aspect of the present invention provides a saddle having a non-circular hollow cylindrical portion, the saddle removably installed on the outer periphery of the fluid pipe such that the cylindrical portion faces upward, an upper end opened, and a bottom portion opened. A main shaft having a shaft hole formed on a tapered surface inclined downward, a cutting-out window for cutting tool formed on a peripheral wall facing the tapered surface of the shaft hole, and a drill provided on a lower end surface, and A movable shaft fitted to the shaft hole of the main shaft so as to be able to move up and down, and a lower end of the movable shaft is pivotally supported by a pin so as to be tiltable by a predetermined angle with respect to the axis, and the movable shaft slides on the tapered surface of the main shaft by moving down. It is composed of a cutting tool that tilts and projects outward from the window, and the water stop valve body, the faucet body of the water faucet, and the rubber ring can be slidably contacted with the hollow cylindrical portion in order from the top on the outer peripheral surface of the main shaft, and These water stop valve elements,
Attach the lower end of the cylindrical fitting provided at the lower end of the faucet so that the lower end engages with the upper end of the rubber ring so that the main shaft can move up and down and rotate with respect to the main body and rubber ring of the water tap. A drilling jig inserted vertically and rotatably into the cylindrical portion of the saddle, a first operating member for vertically moving the drilling jig, and a first operating member for rotating the drilling jig. A punching device including a shaft hole having an upper end opened and a bottom formed on a tapered surface inclined downward, and a hook member projecting window formed by notching on 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 inclines by sliding on the surface and protrudes outward from the window, and the drilling jig is a cylindrical part of the saddle. A diameter-enlargement jig that is vertically and rotatably inserted into the cylindrical portion after being removed, a second operation member that moves the diameter-enlargement jig up and down, and a second operation that rotates the diameter-enlargement jig And a press expanding device including a member. According to a sixth aspect of the present invention, in the fifth aspect, a valve is provided in the hollow cylindrical portion below the water stopping valve body for discharging chips generated by drilling of the drilling jig to the outside.

[0008]

As described above, the water faucet attached to the branch port of the fluid pipe has a large-diameter portion in which the inner surface of the lower end of the cylindrical fitting is formed into a convex curved surface so that the outer diameter thereof is larger than the branch port. Because of the large diameter, the enlarged diameter portion is strong against the force of exit from the branch port.

[0009]

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 tap having a hollow plug body 2, and the lower end face of the plug body 2 is provided with an upper end of a thin-walled hollow cylindrical metal fitting 4 having upper and lower ends formed in an enlarged diameter portion 3. It is provided so as to be integrally connected. A rubber ring 5 is fitted and mounted on the outer periphery of the cylindrical metal fitting 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 4 is formed in a convex curved surface so that its 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.

An outward annular flange portion 10 is formed at the upper end protruding from the branch port 9 of the rubber ring 5, and an inward annular projection 11 is formed at a lower end portion facing the inner surface of the pipe 6 from the branch port 9. (See FIG. 2). On the lower end surface of the plug body 2, there is provided an annular projection 12 which is fitted and positioned from above on the flange portion 10 of the rubber ring 5. The annular projection 12 presses the flange portion 10 of the rubber ring 5 from above, and the outer periphery of the flange portion
And prevents the water ring 1 from stabilizing when the water faucet 1 is tilted by receiving a lateral force. 2a is a ball valve in the plug main body 2,
2b is a sealing material, 2c is a branch portion, 2d is a handle shaft for rotating the ball valve, and a ball valve presser 13 is attached to the upper opening of the plug body 2.

In the above description, as shown in FIG. 2, the outer diameter d of the body of the tubular metal fitting 4 is slightly smaller than the inner diameter b of the slightly larger water faucet guide 16 formed at the upper end opening of the rubber ring 5. The diameter D of the branch opening 9 is slightly larger than the outer diameter a of the trunk of the rubber ring 5.

3 and 4 show a perforation device 18 for perforating the branch 9 in the ductile tube 6 for mounting the water faucet 1, FIG. 3 showing an upper half thereof, and FIG. 4 showing a lower half thereof. I have. This drilling device 18 has an arc-shaped saddle lower portion 21 detachably attached to the outer periphery of the pipe 6 with bolts 19 and nuts 20, and a bolt 23 so as to sandwich a packing 23 around a center hole 22 in the lower portion of the saddle.
It has a saddle 27 consisting of a saddle body 25 attached by 24 and a saddle upper part 26 formed at the upper end of the saddle body. 28 is a packing for sealing around the center hole 22. 5 and 6, the saddle main body 25 has an oval planar shape, and a chip discharge valve 29 is attached to a lower portion thereof. A male screw 30 is formed on the outer peripheral surface of the saddle upper portion 26, and a screw 32 is screwed into the male screw 30 because the male screw 30 is formed on the inner peripheral surface of a hollow cylindrical pressing body 31 having a lower end opening. Reference numeral 33 denotes a hole formed in the upper saddle 26, and reference numeral 34 denotes a plurality of holes formed in the pressing body 31 in the circumferential direction. When these two holes 33 and 34 overlap, it becomes possible to open and close the stopcock later described.

A plurality of engagement grooves 38 are formed at the edge of the top wall of the pressing body 31, and the engagement grooves 38 are provided on the inner peripheral surface of the cylindrical portion 41 of the handle 40 shown in FIG. The protruding portion 42 is adapted to be engaged, and the pressurizing body 31 screwed to the upper saddle 26 as described above can be moved up and down by operating the handle. An opening 44 is formed in the top wall of the pressing body 31, and an annular guide 45 is hung below the periphery of the opening 44, and the guide 45 has a perforated jig housing cylinder 46 shown in FIG. The upper end of the large-diameter hollow cylindrical portion 47 formed at the top is fitted. 48 is a ball valve of a water stopcock 49 accommodated in the cylindrical portion 47, 50 is a ball valve retainer attached to the upper opening of the cylindrical portion 47, and has an external thread 51 on the outer peripheral surface projecting upward from the opening 44. Are formed, and a male screw 52 for attaching the punching device main body described later is formed thereon. 53 is an O-ring, 54 is a washer, and 55 is a handle shaft for rotating the ball valve. An oval water stop valve 56 is formed at the lower portion of the cylindrical body 46 so as to be slidably fitted into the saddle body 25, and an O-ring 57 for sealing is annularly formed on the outer peripheral surface of the valve body. It is fitted in the groove. An internal thread 58 is formed on the inner peripheral surface of the opening 44 of the pressing body 31. The reason that the external thread 51 of the ball valve retainer 50 is threaded through the internal thread 58 is that the valve body 56 descends due to the weight of the drilling device 18 when the later-described punching device body 61 is mounted on the upper portion of the valve body 56. Is applied to the screw part to prevent it. The washer 54 was provided because the upper part of the valve body 56 was pressurized.
This is to reduce the resistance due to friction when the screw 31 is pressed.

On the other hand, the external thread 52 of the ball valve retainer 50 is
The screw 63 is screwed and attached to the inner surface of the lower end widening portion 62 of the hollow cylindrical punch body 61 having upper and lower ends opened as shown in FIG. The main body 61 is provided inside the cylinder 46 and the main body 61.
The drilling jig 65 is stored from the upper end opening of the drilling jig.
The tip of 65 protrudes from the lower end opening of the cylinder 46. The drilling jig 65 has a shaft hole 67 formed at a tapered surface 66 whose upper end is open and whose bottom is inclined downward, and the tapered surface 66 of the shaft hole is formed.
A main shaft 70 in which a hook member projecting window 68 is cut out as shown in FIG.
A movable shaft 71 fitted up and down to 67
A drill 73 is held and attached to a lower end surface of the movable shaft 71 by a holding member 74, and a cutting tool 76 is pivotally supported at the lower end of the movable shaft 71 by a pin 77 so as to be tiltable at a predetermined angle with respect to the axis, and the movable shaft 71 is moved downward. As a result, the taper surface 66 of the main shaft 70 slides and tilts, and can protrude outward from the window 68. The drill 73 is larger than the outer diameter of the holding member 74, and a gap is formed between the hole drilled during the drilling and the holding member 74. Chips are discharged from the gap together with the water discharged through the valve 29. Another window 78 is cut out on the rear peripheral wall opposite to the window 68. As shown in FIG. 8B, a locking projection 81 that locks with a locking recess 80 formed on the rear surface of the cutting tool 76 when the cutting tool 76 projects from the window 68 is provided in the middle of the inclination of the tapered surface 68. ing. 83 is a tool holder provided at the lower end of the movable shaft 71.

A male screw 85 is formed on the outer peripheral surface of the upper end of the main body 61. The male screw has an operating handle as a first operating member.
A screw 88 is screwed into the inner peripheral surface of the lower cylindrical portion 87 of the screw 86. A through hole 89 is formed in the top wall of the lower cylindrical portion 87, and the main shaft 70 is rotatably inserted into the hole and protrudes upward. A male screw 91 is formed on the outer peripheral surface of the protruding upper end of the main shaft 70, an end of the movable shaft 71 protruding from the shaft hole 67 of the main shaft has a small diameter portion, and a male screw 92 is formed on the outer peripheral surface thereof. I have. An adjusting nut 93 is screwed into the male screw 92, and a cap nut 94 is screwed into the male screw 91 so as to cover the adjusting nut 93. The adjustment nut 93 adjusts the vertical movement position of the movable shaft 71 by loosening or tightening. The cap nut 94 is removed when moving the movable shaft 71 up and down,
The movable shaft 71 is mounted in a tilted position, and serves to lock the movable shaft 71 and the main shaft 70. A tooth 96 is cut on the outer peripheral surface of the main shaft 70 in the main body 61 below the handle 86, and the gear is provided in the reducer cover 98 in connection with a shaft of a motor 97 as a first operating member. The main shaft 70 is rotated by driving the motor 97. 101 is a thrust bearing. In FIG. 4, a rubber ring 5 and a water tap 1 are attached to the outer periphery of a drilling jig 65 projecting downward from the cylinder 46 in order from the lowest. 102 is a packing. If there is a risk that the drilling device body 61 (diameter expanding device body 122) may rotate by rotating the handle 86 (handle 176), a nut for a double nut is attached to the male screw 52 and the male screw 51. May be provided.

FIG. 9 shows another modification of the drilling jig. In this drilling jig 105, a drill shaft 107 having a tip formed on a drill 106 is suspended at the center of the lower end surface of the main shaft 70, and the drill is attached to the outer periphery. A cylindrical body 109 having a tip 108 is provided integrally. 110 is a hook. Other configurations are the same as those of the above-described drilling jig 65. FIG. 10 shows still another modification of the drilling jig. The drilling jig 112 is provided with cutting tools 113 and 114 facing each other, and the cutting tools project from the windows 68 and 78 on both sides. Other configurations are the same as the above-described perforation jig 65 and perforation jig 105 in FIG.

FIG. 11 shows a press expanding device which is installed in place of the punching device main body 61 after the branch port 9 is formed by the punching device 18, and the press expanding device 120 is provided with the cylindrical fitting 4 of the water tap 1. And a hollow cylindrical expanding device main body 122 in which a female screw 121 is screwed and attached to the external thread 52 of the ball valve retainer 50 of the cylindrical body 46. I have. Body 1
The upper part of 22 is formed in a large-diameter hollow cylindrical part 123, in which a slide member 125 whose upper and lower ends are opened is housed. The sliding member 125 is a lower portion that slides on the inner peripheral surface of the cylindrical portion 123.
It comprises an upper portion 125c having a lower end flange 125b which is also in sliding contact with the upper portion 125c, and a small-diameter intermediate portion 125d connecting the two portions, and a female screw 125e is formed in the center hole thereof. 1
26 is a spring for urging the slide member 125 upward, and 127 is a spring for urging the slide member 125 downward. A plurality of detent grooves 128 are provided on the outer peripheral surface of the lower portion 125a of the slide member 125.
Is formed, and the tip of the rotation stop bolt 129 provided on the cylindrical portion 123 is engaged. As a result, the slide member 125 can move up and down, but does not rotate. Slide member 125
The distal ends of a pair of push-up rods 131 are located on both sides of the middle portion 125d to support the upper portion 125c. Each base of the push-up rod 131 passes through a hole 130 formed in the peripheral wall of the cylindrical portion 123, and the movable portion 132
And the protruding end 133 is
Installed pressed at 135. Movable part 132 is cylindrical part 12
The distal end portion engages with the inner surface of the extension cylindrical portion 137 provided integrally with 3 so that it can move up and down, and the base end portion is supported by a fixed portion 138 fixed to the extension cylindrical portion 137. It is connected to a motor 140 as a second operating member, and moves up and down by driving of the motor 140. Then, by the movement of the movable portion 132, the push-up rod 131 also moves up and down, pushes up the slide member 125 against the spring 127, and can raise the later-described large-diameter jig 145 screwed with the slide member 125. Has become. An upper portion 125c of the slide member 125 passes through a cap 141 screwed to the upper end of the cylindrical portion 123, and a handle 142 is attached to a spline at the upper end. The handle 142 is for rotating the slide member 125 when the rotation stop bolt 129 is engaged with the rotation stop groove 128. In the center hole of the slide member 125, a male screw 143 formed on the upper outer peripheral surface of the main shaft 150 of the diameter increasing jig 145 is screwed and inserted into the female screw 125e. 144 is a washer.

FIG. 12 shows the diameter expanding jig 145. The basic configuration having a main shaft and a movable shaft is the same as that of the above-described drilling jig 65. That is, the diameter-enlargement jig 145 has a shaft hole 147 having an upper end opened and a bottom formed in a tapered surface 146 inclined downward, and a hook member projecting window is formed in a front peripheral wall facing the tapered surface of the shaft hole. The main shaft 150 having a cutout 148 and the main shaft 15
A movable shaft 151 fitted to the 0 shaft hole 147 so as to be able to move up and down, and a hook member 152 is pivotally supported by a pin 153 at a lower fork of the movable shaft 151 so as to be tiltable by a predetermined angle with respect to the axis. When the movable shaft 151 is moved downward, the tapered surface 146 of the main shaft 150 slides and tilts so that the molding surface 154 projects outward from the window 148. The shaft hole 147 is drilled at a position slightly eccentric with respect to the center of the main shaft 150 so that the peripheral wall with the window 148 is thicker than the peripheral wall on the opposite side to the window 148 and can withstand a strong bending force. Has become. Another window 1 on the rear wall opposite window 148
55 is notched.

In this example, the tapered surface 146 is the shaft hole 14 of the main shaft 150.
Formed on a taper table 156 fixed to the lower part of 7, the taper table
Reference numeral 156 is attached by a fixing pin 157 and a bolt 158. The forming surface of the hook member 152 is in the middle of the inclination of the tapered surface 146.
When the 154 projects from the window 148, a locking projection 161 is provided to lock into a locking recess 160 formed on the rear surface of the hook member 152. The movable shaft 15 is provided above the molding surface 154 of the hook member 152.
A locking surface 164 is provided for locking with a locking surface 163 formed on the enlarged bottom portion 162 of the first part. The forming surface 154 is inclined downward as shown in FIG. 12 and protrudes downward from the outer peripheral surface of the main shaft 150. When the lower end of the cylindrical fitting 4 of the water faucet 1 is expanded while being pressed, the upper part of the enlarged diameter portion 3 is raised. It is designed to prevent buckling.

A spline 166 for attaching a handle to be described later is formed on an outer peripheral surface of an upper end portion of the main shaft 150, and an adjusting nut 16 screwed to an upper male screw 167 of the movable shaft 151 is formed at an upper end thereof.
Male screw 170 for cap nut 169 for fixing 8 is the shaft hole of main shaft 150
It is formed concentric with 147. Adjustment nut 168 and cap nut
The function of 169 is the same as that of the above-described drill jig 65. 17
1,172 are O-rings fitted in the O-ring grooves. A corner portion 174 is provided to protrude from the base end of the expanded portion 162 of the movable shaft 151, and the corner portion 174 is in contact with a groove 175 provided on the inner surface side of the window 148. Reference numeral 176 denotes an operation handle as a second operation member attached to the spline 166.

A method of attaching the water tap 1 to the branch port 9 of the pipe 6 will be described below. First, as shown in FIGS. That is, a drilling jig
Pull up the movable shaft 71 with respect to the main shaft 70 of 65, and adjust the nut 93.
Is screwed into the male screw 92, the lower surface of the nut 93 is brought into contact with the end surface of the main shaft 70, and the cap nut 94 is screwed into the male screw 91. As a result, the cutting tool 76 is stored in the lower part of the main shaft 70.
Thereafter, the cylindrical body 46 and the water faucet 1 are inserted into the drilling jig 65 from the lower end side, and the upper end male screw 180 formed on the ball valve retainer 13 of the water faucet is inserted into the lower end female thread 181 of the cylindrical body 46. Screw them together and tighten the packing 102 inserted between them. At this time, the longitudinal direction of the valve body 56 of the cylindrical body 46 and the direction of the branch portion 2c of the water faucet 1 are matched. Further, the ball valve 2a of the water tap 1 is opened. Thereafter, a rubber ring 5 is attached to the lower end of the cylindrical fitting 4 of the water faucet 1 by the guide portion 16.
The ball valve 48 of the water stopcock 49 inserted from the side and attached to the cylinder 46
Open.

Next, the saddle 27 is attached to the pipe 6 with bolts 19 and nuts 20, the valve 29 is opened, and the saddle body of the attached saddle 27 is mounted.
25 and the upper part 26 of the saddle, insert the pressing body 31 from the lower end side,
Into the male screw 30. Then, the upper end female screw 58 of the pressing body 31
After passing through the external thread 51 of the water stopcock 49, the top wall around the internal thread 58 of the pressurizing body 31 receives the external thread 51 to support the lowering of the cylindrical body 46. After the support, the engaging projections
The handle 40 is attached by engaging the 42, and the pressurizing body 31 is rotated and lowered until it reaches a predetermined height as shown in FIG. In this state, the body of the drilling device is
The drilling jig 65 housed in 61 is inserted so that the drill 73 comes out below the lower end of the rubber ring 5. And the drilling device body
When the female screw 63 of the lower end expanding portion 62 of the 61 is screwed into the external thread 52 of the water stopcock 49, the perforation device 18 is now attached (FIG. 4).

Next, when the motor 97 is driven to rotate the main shaft 70 and the handle 86 is rotated and lowered, the drill 73 pierces the pipe 6 (FIG. 13A). When the perforated hole is opened, the water in the pipe 6 is discharged from the valve 29 together with the swarf. When the drilling of the pipe 6 by the drill 73 is completed, the motor 97 is stopped. After the stop, when the adjusting nut 93 is loosened and the movable shaft 71 is pushed down, the cutting tool 76 projects from the window 78 as shown in FIG. 8B, and the cap nut 94 is tightened at that position.

When the projecting state of the cutting tool 76 is fixed, the motor 97 is driven again to rotate the main shaft 70, and the handle 86 is rotated and lowered, so that the hole drilled by the drill 73 is further fixed by the cutting tool 76. It is cut and drilled in a hole slightly larger than the outer diameter of the trunk of the rubber ring 5 (FIG. 13B). The hole thus drilled becomes the branch port 9, and after the branch port 9 is drilled, the valve 29 is closed. Also, the cap nut 94 is removed, the movable shaft 71 is pulled up, and the adjustment nut 93 is tightened until it comes into contact with the upper end surface of the main shaft 70. Thereby, the cutting tool 76 is stored in the lower part of the main shaft 70. Next, the handle 86 is removed, and the tip of the drill 73 provided with the drill jig 65 on the main shaft 70 is attached to the ball valve 48 of the water stopcock 49.
Then, a handle is attached to a handle shaft (not shown) of the water stopcock 49 using the hole 34 provided in the pressurizing body 31, and the valve is closed. Thereafter, the female screw 63 of the lower end expanding portion 62 of the punching device main body 61 is unscrewed from the male screw 52 of the water stopcock 49 and removed. This completes the drilling of the branch 9
Only the saddle 27 and the pressure body 31 remain on the tube 6 (FIG. 13C).

Next, a handle 40 (FIG. 5A) is attached to the pressurizing body 31, and the pressurizing body 31 is rotated by the handle 40 to lower the pressurizing body 31. Cylinder 4
6. The water faucet 1 is lowered via the ball retainer 13, and the rubber ring 5 fitted to the cylindrical metal fitting 4 enters the branch port 9 from the lower end, and the pipe 6
And the lower end face of the flange portion 10 of the rubber ring 5 are in contact with each other.
When the rubber ring 5 is further lowered, the inner diameter of the rubber ring 5 is expanded so that the cylindrical metal fitting 4 of the water tap 1 enters and projects from the lower end surface of the rubber ring 5. At this time, the annular protrusion 11 of the rubber ring 5 reverses from inward to outward. When it is further lowered, the flange portion 10 of the rubber ring 5 enters the annular projection 12 provided on the lower end surface of the water faucet 1,
The rubber ring 5 flange portion 10 is compressed between the lower end surface of the water faucet 1 and the outer peripheral surface of the pipe 6. The tubular fitting 4 of the water faucet 1 further comes out to the inner surface of the pipe by that much (FIG. 14A).

After the above, the press expanding device 12
As shown in FIGS. 11 and 14B, a screw 121 is screwed onto the external thread 52 of the water stopcock 49 so as to provide 0 at the lower end of the diameter expanding device main body 122. Next, the ball valve 48 of the water stopcock 49 is opened and the expanding jig 145 is manually pushed in, and the slide member 125 and the spring 126 (127) are housed in the cylindrical portion 123, and are prevented from rotating with the bolt 129. , And put the cap 141 on. Further, the push-up rod 131 is inserted on both sides of the intermediate portion 125d of the slide member 125, and the push plate 134 is tightened with the bolt 135. Thereafter, the handle 176 is attached, the diameter-expanding jig 145 is rotated, and the screw 143 and the female screw 125e are screwed down to lower the hook member 152 housed at the lower portion from the lower end of the cylindrical fitting 4 of the water faucet 1. A position that protrudes downward. Thereafter, when the adjusting nut 168 is loosened and the movable shaft 151 is pushed down, the hook member 152
Since it protrudes from the window 148 (FIG. 14C), the cap nut 169 is tightened at that position.

Next, the handle 176 is rotated to raise the jig 145 with respect to the slide member 125 into which the diameter-expanding jig 145 is screwed.
To the lower end of the cylindrical fitting 4 of the water faucet 1.
Thereafter, when the motor 140 is driven, the movable portion 132 and the push-up rod 131 attached thereto move up and down to move the slide member 125.
The jig 145 is expanded and screwed to the slide member 125.
Also slightly move up and down, and the forming surface 154 of the hook member 152 expands the diameter of the lower end of the cylindrical fitting 4. When the handle 176 is slightly rotated and raised at the time of this diameter expansion, the diameter expansion is performed on the outer periphery of the lower end portion of the cylindrical metal fitting 4 on average, and the diameter is formed into a predetermined diameter enlarged portion 3 (FIG. 15A → B). ). When the diameter expansion is completed, the motor 140 is stopped, the handle 176 is rotated, the diameter expansion jig 145 is lowered to a position where the hook member 152 can be stored, the cap nut 169 is removed, the movable shaft 151 is raised, and the adjustment nut 168 is attached to the main shaft. Tighten until it hits the top of 150. Thereafter, the diameter increasing jig 145 is pulled up until its lower end is above the ball valve 48 of the water stopcock 49 (FIG. 15C), and the ball valve of the water stopcock 49 is closed. Then, the lower end female screw 121 of the diameter expanding device main body 122 is
Is unscrewed from the external thread 52 of the stopcock 49 and removed.

Next, as shown in FIG. 15D, an endoscope tube 185 is inserted from the lower end of the water stopcock 49 into the external thread 5 of the water stopcock 49.
Attach nut 2 to packing 2 via packing 186 and tighten. The lower end of the endoscope tube 185 is formed in a tapered shape, and a mirror 188 is attached to the inner surface of the tapered portion.
189 is installed, and this light source is connected to an external power supply 191 via an electric wire 190 disposed in the tube. 192 is a lens,
193 is a valve. At the time of observation with the endoscope tube 185, the valve 193 is opened to release air, the inside of the tube 185 is filled with water, and the enlarged diameter portion 3 is observed while looking into the mirror 188 from the lens 192 while rotating the tube. After observation, the lower part of the mirror 188 is a stopcock 49
After pulling up the ball valve 48 to close it and closing the valve, the endoscope tube 185 is removed. Next, when the pressure body 31 is loosened and removed, and the bolt 19 and the nut 20 are loosened and the saddle 27 is removed, the pipe 6 has a cylinder 46 having a water stopcock 49,
Close the ball valve 2a of the water tap 1
16A). Thereafter, the water faucet 1 is rotated to change the angle of the branch portion 2c, and the cylinder 46 is removed from the water faucet 1.
Are completed (FIG. 16B → C).

FIG. 17 shows another embodiment of the water faucet. In this embodiment, an annular groove 195 is formed at the lower end surface of the rubber ring 5 at the boundary with the annular projection 11, and the water faucet is formed in this groove 195. At the time of mounting 1, the enlarged-diameter end of the cylindrical metal fitting 4 is fitted. With such a configuration, there is an advantage that the rubber ring 4 is less likely to come off against high-pressure water or tilting as compared with the configuration shown in FIG.

Although the above-described embodiment has been described as a method of mounting the water faucet 1 under uninterrupted water supply, it is needless to say that the water pipe 6 can be mounted with water cut off. The details of the structure of the saddle 27, the drilling device 18 and the diameter expanding device 120 may be other than those shown in the drawings, and various modifications can be made without departing from the spirit of the invention.

[0031]

According to the first aspect of the present invention having the above-described structure, the following excellent effects can be 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,
The flange portion of the rubber ring is pressed by the annular projection on the lower end surface of the plug body, and becomes strong against tilting by integration. (4) Even if chips generated when the pipe is pierced remain at the top of the pipe above the branch port, the upper flange portion of the rubber ring is dented and absorbs the chips. 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 press fit of the rubber ring. (5) Even if a cleaning bullet for cleaning the inner surface of the pipe is inserted into the inner surface of the pipe after the water faucet is attached, the cleaning bullet does not get caught because the enlarged diameter portion of the cylindrical metal fitting is rounded. (6) Since the torso of the cylindrical fitting does not receive a tensile load due to mounting, the thickness of the torso can be reduced, and the inner diameter of the fitting can be made larger than the diameter of the branch port of the pipe.
High efficiency for flow rate.

In addition to the above, the invention of claim 2 has an extraordinary effect that the rubber ring is harder to come off against high-pressure water and tilting, and the strength is strong. According to the invention of claim 3, the water faucet as described above can be very easily attached to the branch port of the fluid pipe via a drilling jig, a diameter increasing jig, or the like. According to the fourth aspect of the present invention, it is possible to visually observe the enlarged diameter state of the enlarged diameter portion. According to the invention of claim 5, the water faucet can be mounted with a simple device. In particular, the invention according to claim 6 can discharge chips generated at the time of perforation to the outside and can be mounted under uninterrupted water, which is extremely practical.

[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 between each part of a water faucet and a branch port.

FIG. 3 is a partially omitted longitudinal front view showing an upper half part of a perforating apparatus for perforating a branch port in a pipe for mounting a water tap.

FIG. 4 is a partially omitted longitudinal front view showing the lower half of the punching device of the above.

5A is a perspective view of a handle, FIG. 5B is a perspective view of a pressurizing body, FIG. 5C is a perspective view of a part of a saddle, and FIG. 5D is a view along the BB stopper of FIG. It is sectional drawing.

FIG. 6 is an enlarged sectional view taken along line AA of FIG. 4;

FIG. 7 is a perspective view of a cylindrical body for storing a drilling jig.

8A and 8B are enlarged views showing the lower part of the drilling jig, wherein FIG. 8A is a side view, FIG. 8B is a vertical sectional front view, FIG. 8C is a vertical sectional front view in which a cutting tool is stored, and FIG. It is a bottom view of B).

9A and 9B are enlarged views of a lower part of a drilling jig as another modified example, where FIG. 9A is a side view, FIG. 9B is a longitudinal sectional front view, and FIG. 9C is a longitudinal sectional front view in a state where a cutting tool is stored. , (D) is (B)
FIG.

FIG. 10 is an enlarged view showing a lower part of a drilling jig as still another modification, wherein (A) is a side view and (B) is a longitudinal sectional front view.

FIG. 11 is a longitudinal sectional front view of the press expanding device with a part omitted.

12A and 12B show a diameter expansion jig, and FIG.
(B) is a bottom view, (C) is a front view of the movable shaft, and (D) is its bottom view.

FIGS. 13A, 13B, and 13C are partial cross-sectional views illustrating the operation.

FIGS. 14A, 14B, and 14C are partial cross-sectional views illustrating the operation.

15A, 15B, 15C, and 15D are partial cross-sectional views illustrating the operation.

16 (A), (B) and (C) are partial cross-sectional views for explaining the operation.

17A and 17B show another embodiment of the water faucet, wherein FIG. 17A is a longitudinal sectional front view of an attached state, FIG. 17B is a longitudinal sectional front view of a rubber ring,
(C) is a longitudinal sectional front view during the mounting operation.

FIG. 18 is a longitudinal sectional front view showing a state in which a water tap according to a conventional example is attached to a branch port of a fluid pipe.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Separator faucet 2 Plug main body 3 Large diameter part 4 Cylindrical fitting 5 Rubber ring 6 Pipe 9 Branch port 12 Annular projection 18 Punching device 27 Saddle 31 Pressurizing body 56 Water stop valve body 61 Punching device main body 65 Punching jig 73 Drill 76 bytes 120 Press diameter expansion device 122 Diameter expansion device main body 145 Diameter expansion jig 152 Hook member

Claims (6)

(57) [Claims] 1. A plug body in which upper and lower ends of a hollow cylindrical metal fitting are connected to a lower end face thereof, and a cylindrical fitting of the plug main body is fitted to and fitted to an outer periphery of a lower end of the cylindrical metal fitting, and an annular projection is provided at the lower end. A water ring provided with a rubber ring provided with a rubber ring, and a cylindrical fitting of the plug body equipped with the rubber ring is press-fitted and fitted to a branch port formed in a fluid pipe. The metal fitting is formed into a thin-walled shape, and the inner surface of the lower end of the cylindrical metal fitting is formed as an enlarged diameter portion having a convex curved surface so that the outer diameter thereof is larger than the branch opening, and protrudes from the branch opening of the rubber ring. A water faucet, wherein an outwardly-facing annular flange portion is formed on the upper end portion, and an annular projection fitted into the flange portion from above is formed on the lower end surface of the plug body. 2. The water tap according to claim 1, wherein an annular groove is formed on a lower surface of the rubber ring, and a lower end formed in an enlarged diameter portion of the cylindrical fitting is fitted into the groove. 3. A drilling jig having a drill at a lower end in a non-circular hollow cylindrical portion of a saddle detachably mounted on an outer periphery of a fluid pipe, and having a cutting tool which can protrude outward from a side surface above the drill. A water-stop valve body, a water-stopper plug body, and a rubber ring are slidably contactable with the hollow cylindrical portion in this order from above on the outer peripheral surface of the drilling jig. The lower end of the cylindrical fitting provided on the lower end of the plug body engages with the upper end of the rubber ring so that the drilling jig can move up and down and can rotate with respect to the valve body, the main body of the water tap and the rubber ring. The drilling jig is rotated while moving the drilling jig downward, drilling the fluid pipe with a drill, and forming a hole. After rotating and expanding the bored hole to form a branch port, the water stopping valve body,
The body of the water faucet and the rubber ring are kept as they are, and the drilling jig is set in a state before the lower protrusion, and then pulled up from the hollow cylindrical portion and pulled out, and the rubber ring and the cylindrical metal fitting are appropriately provided at the branch port. The upper flange portion of the rubber ring comes into contact with the outer peripheral surface of the fluid pipe, the lower end of the cylindrical metal fitting of the plug body projects below the lower end of the rubber ring, and then into the hollow cylindrical portion. A diameter increasing jig is inserted from above, and this diameter increasing jig has an axial hole formed at an upper end and a bottom portion formed on a tapered surface inclined downward, and a peripheral wall facing the tapered surface of the axial hole. A main shaft having a notch formed with a hook member projecting window, a movable shaft fitted into the shaft hole of the main shaft so as to be vertically movable, and a pivot supported at a lower end of the movable shaft by a pin so as to be tiltable by a predetermined angle with respect to the axis. And
A hook member that slides and tilts by sliding the tapered surface of the main shaft by the downward movement of the movable shaft and projects the molding surface outward from the window, and the lower end of the inserted diameter expanding jig is press-fitted. After projecting downward from the lower end of the cylindrical fitting, the movable shaft is moved downward so that the molding surface of the hook member projects outward from the window, and then the diameter increasing jig is rotated and the diameter increasing jig is rotated. Is moved up and down little by little to press the lower end of the cylindrical metal fitting, and expand the diameter in a trumpet shape from the inside to the outside so that the outside diameter is larger than the diameter of the branch port. A distinctive method of mounting a faucet. 4. The method according to claim 3, wherein after forming the enlarged diameter portion, a mirror and a light source are attached to the lower end, and an endoscope tube having a lens attached to the upper end is inserted into the hollow cylindrical portion to observe the enlarged diameter portion. How to install a faucet. 5. A saddle having a non-circular hollow cylindrical portion, which is detachably installed on the outer periphery of the fluid pipe so that the cylindrical portion faces upward, a taper having an open upper end and a downward slope. A main shaft having a shaft hole formed in the surface, a notch formed in a peripheral wall facing the tapered surface of the shaft hole, and a drill provided on a lower end surface, and a shaft hole of the main shaft. A movable shaft fitted up and down movably, pivotally supported at a lower end of the movable shaft by a pin so as to be tiltable at a predetermined angle with respect to the axis, and sliding down the tapered surface of the main shaft by the downward movement of the movable shaft to tilt; A water cutting valve body, a water faucet plug body, and a rubber ring are slidably contactable with the hollow cylindrical portion in this order from above on the outer peripheral surface of the main shaft. So that the main shaft can move up and down and rotate with respect to the valve body, A lower end of a cylindrical metal fitting provided at an end thereof is mounted so as to be engaged with an upper end of a rubber ring, and a boring jig inserted vertically and rotatably into the cylindrical portion of the saddle; A punching device including a first operating member for vertically moving a jig, and a first operating member for rotating the drilling jig;
A main shaft having a shaft hole having an open upper end and a bottom formed in a tapered surface inclined downward, and a hook member projecting window formed by notching a peripheral wall facing the tapered surface of the shaft hole; A movable shaft fitted to the shaft hole so as to be able to move up and down, and a lower end of the movable shaft is pivotally supported by a pin so as to be tiltable at a predetermined angle with respect to the axis, and slides on the tapered surface of the main shaft by moving down the movable shaft. A hook member that tilts and protrudes outward from the window, and is inserted into the tubular portion after the drilling jig is removed from the saddle tubular portion so as to be vertically movable and rotatable. And a press expanding device including a second operating member for vertically moving the diameter expanding jig and a second operating member for rotating the diameter expanding jig. . 6. The water faucet mounting device according to claim 5, wherein a valve is provided in the hollow cylindrical portion below the water stopping valve body for discharging chips generated by drilling of the drilling jig to the outside.