JP2552794B2 - Water faucet, 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 A known type of water faucet of this type is 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 tubular 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 when the coil spring is annularly embedded in the rubber ring 04, the spring escapes to the inner surface of the pipe. (2) Since a circular hole is bored in the fluid pipe 013 as a branch port 012, the hole edge on the inner surface of the pipe is not a circle lying on a horizontal plane but a circle formed on a curved surface. There is a difference in height from the periphery. 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 by the tightening nut 06, the taper portion 010, and the flange portion 08 via the washer 05, the washer 05 and the outer surface of the pipe are in contact with each other, and it is difficult to bend with respect to a lateral force. (4) When the ground changes due to an earthquake or the like and a large lateral force is applied to the dipstick 01 and tilts, the uneven compression ratio of (2) is further increased, and the compression ratio 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) Cutting chips are generated when the pipe 013 is drilled. 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 compressed state of the rubber ring 04 is released, and the sealing effect is greatly reduced.

Therefore, the present invention can solve the above-mentioned conventional problems and improve the separation preventing force from the branch port formed in the fluid pipe, which is due to the difference in the height of the hole edge of the branch port. It is possible to eliminate the uneven compression rate of the rubber ring, and to make it a structure that bends softly even when a lateral force is applied, and even if it bends it can prevent the rubber ring from being damaged and the sealing function from decreasing. Moreover, it is an object of the present invention to provide a water faucet capable of preventing the sealing function from being affected even if chips and the like remain on the pipe top, a method of mounting the water faucet, and a device for mounting the water faucet.

[0005]

In order to achieve the above object, the water faucet of the invention of claim 1 is such a water faucet as described above, in which the tubular metal member comprises an inner cylinder and an outer cylinder. The outer cylinder is composed of a lower small-diameter cylindrical portion slidably fitted to the outer circumference of the inner cylinder and an upper large-diameter cylindrical portion that is continuously provided via an annular flange portion that projects outward from the upper end of the small-diameter cylindrical portion. Therefore, a taper surface or a rounded surface is formed on the outer periphery of the lower end of the small-diameter cylindrical portion so as to have a smaller diameter toward the lower side, and a mounting portion such as a water stopper is formed on the inner surface of the large-diameter cylindrical portion. On the outer periphery of the lower end portion of the inner cylinder, there is formed an annular convex portion having a first inclined surface having a large diameter downward and a second inclined surface inclined upward from the lower end of the inclined surface. A circumference 1 which inclines in the same direction as the second inclined surface on the first inclined surface of the annular convex portion and supports the lower end surface of the annular protrusion of the rubber ring.
The split taper ring is fitted and arranged. The outer diameter of this taper ring is smaller than the branch opening in the normal state, but when it is pushed down by the rubber ring and moved downward along the first inclined surface, the diameter increases and the outer diameter becomes larger than the branch opening and the second inclined surface is formed. Can be accepted by. An annular groove is formed on the outer peripheral surface of the upper end of the inner cylinder, and a stopper ring is arranged between the annular groove and the upper surface of the annular step. Further, an annular flange portion that abuts the lower surface of the annular flange portion of the outer cylinder is formed at the upper end portion protruding from the branch opening of the rubber ring.

According to a second aspect of the water faucet of the present invention, in the water faucet as described above, the tubular metal member comprises an inner cylinder and an outer cylinder, and the outer cylinder is a male screw formed on the outer peripheral surface of the inner cylinder. A lower small diameter cylindrical portion formed on the inner peripheral surface thereof with a female screw to be screwed into the upper peripheral portion, and an upper large diameter cylindrical portion connected continuously via an annular flange portion protruding outward from the upper end of the small diameter cylindrical portion. A taper surface or a rounded surface is formed on the outer periphery of the lower end of the small-diameter cylindrical portion so as to have a smaller diameter toward the lower side, and a mounting portion such as a water stop is formed on the inner surface of the large-diameter cylindrical portion. On the outer periphery of the lower end portion of the inner cylinder, there is formed an annular convex portion having a first inclined surface having a large diameter downward and a second inclined surface inclined upward from the lower end of the inclined surface. On the first inclined surface of the annular convex portion, there is fitted and arranged a taper ring divided into one circumference which inclines in substantially the same direction as the second inclined surface and supports the lower end surface of the annular protrusion of the rubber ring. . The outer diameter of this taper ring is smaller than the branch opening in the normal state, but when it is pushed down by the rubber ring and moved downward along the first inclined surface, the diameter increases and the outer diameter becomes larger than the branch opening and the second inclined surface is formed. Can be accepted by. Further, an annular flange portion that abuts the lower surface of the annular flange portion of the outer cylinder is formed at the upper end portion protruding from the branch opening of the rubber ring.

According to a third aspect of the present invention, there is provided a water faucet mounting method, wherein a pull-up member having a pull-up hook at a lower end thereof which can be extended from a hook projecting window formed at a lower end of the pull-up pipe is provided in the pull-up pipe. It is equipped with a pull-up jig that can be moved up and down, and a pull-up hook that is extended from the hook extension window of this pull-up jig is provided with a taper ring for dividing the circumference and an annular flange at the upper end. In addition, a rubber ring having an annular protrusion at the lower end is attached to the outer periphery by a taper ring so that the lower end surface of the annular protrusion can be supported, and the outer diameter of the lower end becomes large toward the lower side. An inner cylinder formed with an annular convex portion having an inclined surface and a second inclined surface inclined upward from the lower end of the inclined surface, and a lower small-diameter cylindrical portion slidably fitted to the outer periphery of the inner cylinder and the small-diameter cylinder. Connected via an annular flange that extends outward from the upper end of the The outer cylinder so that a taper surface or a rounded surface, which is formed of an upper large-diameter cylindrical portion and is formed to have a smaller diameter toward the lower end of the lower small-diameter cylindrical portion, is located between the inner cylinder and the rubber ring. The cylinder is fitted so that it is located above the inner cylinder, and after a stopper ring is arranged and supported on the upper surface of the annular flange portion of the outer cylinder, this pulling jig is punched from the lower end side to the fluid pipe. Pressed into the branch port and press-fitted, the annular flange part of the rubber ring was in contact with the outer peripheral surface of the pipe, and the lower small-diameter cylindrical part of the outer cylinder was pushed along the inside of the rubber ring, and the annular flange part of the outer cylinder was made of rubber. After contacting the upper surface of the annular flange of the ring, pull up the pulling jig to move the inner cylinder upward along the inner peripheral surface of the lower small-diameter cylindrical portion of the outer cylinder. The annular ring of the rubber ring before the taper ring that moves downward is received by the second inclined surface while expanding its diameter. The causes are pressed against the inner wall of the tube, a stopper ring in an annular groove of the outer peripheral surface of the upper end of the inner cylinder, characterized in that to elastically fitted.

According to a fourth aspect of the present invention, there is provided a water faucet mounting method, which comprises a screw-up member having an outer peripheral surface of a lower end portion formed in a polygonal wrench-shaped rotating engagement portion, and the screw-up member has a circular shape. A rubber ring having a tapering ring divided into one circumference and an annular flange portion at the upper end portion and an annular projection portion at the lower end portion is provided on the outer periphery so that the lower end surface of the annular projection portion can be supported by the tapering ring. After mounting, a screw is formed on the outer peripheral surface, and an annular convex portion is formed on the outer periphery of the lower end portion, which has a first inclined surface having a large diameter downward and a second inclined surface inclined upward from the lower end of the inclined surface. And a lower small-diameter tubular portion formed on the inner peripheral surface with a female thread to be screwed into the male thread of the inner tubular body, and an annular flange portion that extends outward from the upper end of the small-diameter tubular portion. It is composed of an upper large-diameter cylindrical part that is installed and faces downward to the outer periphery of the lower end of the lower small-diameter cylindrical part. The outer cylinder is formed so that the tapered surface or the rounded surface formed to have a small diameter between the inner cylinder and the rubber ring is formed on the inner peripheral surface of the inner cylinder so that the outer cylinder is located above the inner cylinder. After the engaging portion is engaged with the rotation engaging portion of the screw-up member to be fitted in order, the screw-up member is pushed from the lower end side into the branch port formed in the fluid pipe to press-fit, and After the annular flange portion contacts the outer peripheral surface of the pipe, and the lower small-diameter tubular portion of the outer cylinder is pushed along the inside of the rubber ring, and the annular flange portion of the outer cylinder contacts the upper surface of the annular flange portion of the rubber ring,
A taper ring that moves upwards along the inner peripheral surface of the lower small-diameter cylindrical portion of the outer cylinder while rotating the screw-up member to rotate the inner cylinder, and by this upward movement relatively lowers the first inclined surface. Is pressed against the inner wall of the pipe by the annular projection of the rubber ring while being expanded and received by the second inclined surface.

According to a fifth aspect of the present invention, there is provided a water faucet mounting method according to the third aspect of the present invention, wherein a valve is attached to the fluid pipe and a branch port is opened in the fluid pipe portion covered with the valve. After that, the valve is opened and the pull-up jig is pushed into the branch opening from the lower end side.

According to a sixth aspect of the present invention, there is provided a water faucet mounting method according to the fourth aspect, wherein a valve is attached to the fluid pipe, and a branch port is opened in the fluid pipe portion covered with the valve. After that, the valve is opened and the screw-up member is pushed into the branch port from the lower end side.

Further, in the water faucet mounting device according to the invention of claim 7, a polygonal wrench-shaped engaging portion for rotation in which the outer peripheral surface of the lower end portion engages with the engaging portion formed on the inner peripheral surface of the inner cylinder. An inner cylinder having a rubber ring, which is formed on the outer periphery of the taper ring and has an annular flange portion at the upper end portion and an annular flange portion at the upper end portion, and is attached to the outer periphery, and the inner cylinder. A lower small-diameter cylindrical portion having an internal thread formed on the outer peripheral surface of the male thread on the inner peripheral surface, and an upper large-diameter continuous portion formed through an annular flange portion protruding outward from the upper end of the small-diameter cylindrical portion. The outer cylinder is composed of a cylindrical portion, and the outer cylinder is formed so that the tapered surface or the rounded surface, which is formed on the outer periphery of the lower end portion of the lower small-diameter cylindrical portion and has a smaller diameter, is located between the inner cylinder and the rubber ring. A screw-up member fitted so as to be positioned above and the screw-up member can be rotated,
And a holding member that holds the movable member up and down and a branch port that is bored in the fluid pipe so that the lower end portion of the screw-up member held by the holding member can be fitted into the branch port. A valve having a mounting portion to which the lower end portion of the holding member is detachably mounted, the screw-up member from the lower end side, the annular flange portion of the rubber ring is in contact with the outer peripheral surface of the fluid pipe, and the lower small diameter tubular portion of the outer cylinder is An operation member that is pushed along the inside of the rubber ring and is pushed into the branch port so that the annular flange portion of the outer cylinder contacts the upper surface of the annular flange portion of the rubber ring, and then the inner cylinder is rotated and pulled up after being pushed. I am.

According to the eighth aspect of the present invention, in the mounting device for the water faucet, the outer peripheral surface of the lower end portion is a polygonal wrench-shaped engaging portion for rotation engaging with the engaging portion formed on the inner peripheral surface of the inner cylinder. An inner cylinder having a rubber ring formed on the outer periphery thereof, which is provided with a taper ring for dividing the circumference and an annular flange portion at the upper end portion, and an annular protrusion portion at the lower end portion, and the inner cylinder. An upper large-diameter cylinder connected continuously via a lower small-diameter cylindrical portion having an internal thread formed on the outer peripheral surface and engaging with a male thread on the inner peripheral surface, and an annular flange portion protruding outward from the upper end of the small-diameter cylindrical portion. A lower surface of the lower small-diameter cylindrical portion, and the outer surface of the lower cylindrical portion is formed on the outer circumference of the lower cylindrical portion so that a tapered surface or a rounded surface is formed between the inner cylinder and the rubber ring. And a screw-up member fitted so that the screw-up member is positioned so that the screw-up member is rotatably and vertically movable. The holding member is detachably attached in communication with the branch port formed in the fluid pipe, and the lower end of the holding member is attached and detached so that the lower end of the screw-up member held by the holding member can be fitted into the branch port. With the valve having a mounting part that can be mounted and the screw-up member from the lower end side, the annular flange part of the rubber ring contacts the outer peripheral surface of the fluid pipe, and the lower small diameter cylinder part of the outer cylinder runs along the inside of the rubber ring. The operating member is pushed into the branch opening so that the annular flange portion of the outer cylinder contacts the upper surface of the annular flange portion of the rubber ring, and the inner cylinder is rotated and pulled up after being pushed.

[0013]

As described above, in the water dip attached to the branch port of the fluid pipe, the taper ring divided into one circumference is expanded by the first inclined surface of the annular convex portion of the inner cylinder, and the outer diameter thereof is Since it is larger than the diameter of the branch port, it is strong against the force of exiting from the branch port.

[0014]

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, and a hollow cylindrical metal fitting 2 with upper and lower openings and a rubber ring 3
And a taper ring 4 divided into one circumference, a stopper ring 5 and the like. Reference numeral 6 denotes a ductile pipe as a fluid pipe, which is composed of 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 tubular fitting 2 comprises an inner cylinder 11 and an outer cylinder 12. The outer cylinder 12 has a lower small-diameter cylindrical portion 12a slidably fitted on the outer circumference of the inner cylinder 11 and an upper large-diameter continuous portion formed through an annular flange portion 13 protruding outward from the upper end of the small-diameter cylindrical portion. Tube 12
It consists of b. A taper surface or a rounded surface 15 is formed on the outer periphery of the lower end of the lower small-diameter cylindrical portion 12a so as to have a smaller diameter toward the lower side. A screw 17 is formed. Large diameter tube on top
The outer surface of 12b is a polyhedron 18 such as a hexahedron. 19
Is packing. The inner cylinder 11 is formed with an annular convex portion 20 on the outer periphery of the lower end portion, and an outer surface of the convex portion has a first sloping surface 21 having a larger diameter downward and an obtuse angle from the lower end of the sloping surface to incline upward The second inclined surface 22 is formed.

The taper ring 4 is slanted in substantially the same direction as the second inclined surface 22 and is fitted into the outer periphery of the lower end portion of the inner cylinder 11. The taper ring 4 is provided at the lower end portion of the rubber ring 3 in a normal state as shown in FIG. The lower end surface of the annular projection 23 thus formed is supported. As shown in FIG. 2, the outer diameter of the taper ring 4 is smaller than that of the branch port 9 in the normal state, but when the taper ring 4 is pushed down by the rubber ring 3 and is moved downward along the first inclined surface 21, the circumference of the taper ring 4 is divided. Through the diameter,
The outer diameter is larger than that of the branch port 9 and can be received by the second inclined surface 22. Reference numeral 25 denotes a tapered surface or rounded surface formed on the outer periphery of the upper end portion of the inner cylinder 11 so as to have a smaller diameter toward the upper side, and 26 denotes an inner cylinder below the tapered surface or rounded surface 25.
An inner groove is formed on the outer peripheral surface of the inner ring 11, and the stopper ring 5 for preventing the inner cylinder from coming off is housed between the inner ring groove 26 and the upper surface of the annular flange portion 13.

An outward annular flange portion 27 is formed on the upper end portion of the rubber ring 3 protruding from the branch opening 9. FIG. 2 shows a state before the water diversion plug 1 as described above is attached to the branch port 9 of the fluid pipe 6. According to this, the dimensions of each part are set as follows. That is, (1) the diameter D of the branch port 9 is larger than the outer diameter a of the annular convex portion 20 of the inner cylinder 11 of the tubular fitting 2 (this is approximately equal to the outer diameter C of the rubber ring 3),
(2) The outer diameter f of the lower small-diameter cylindrical portion 12a of the outer cylinder 12 is smaller than the outer diameter C of the rubber ring 3, but larger than the inner diameter d of the rubber ring 3,
(3) The inner diameter e of the lower small-diameter cylinder portion 12a of the outer cylinder 12 is larger than the outer diameter b of the inner cylinder 11, and (4) the inner diameter h of the upper large-diameter cylinder portion 12b (mounting screw 17) of the outer cylinder 12 is the stopper ring. 5, the outer diameter b of the inner cylinder 11 is substantially equal to the inner diameter d ₁ of the annular protrusion 23 of the rubber ring 3.

FIG. 3 shows a jig for pulling up the water faucet 1 and members required for pre-installation work. The pull-up jig 31 has a hollow cylindrical pull-up pipe 32 having a closed lower end, and a pull-up bolt 33 housed in the pipe so as to be vertically movable. The lower end of the pull-up bolt 33 and the pull-up pipe 31. One link of a pull-up hook 35 consisting of a plurality of links pivotally supported by a pin between the lower end closing portion of 32 and a lower end closing portion of 32 is pulled up by a lowering of a pulling bolt 33 as shown in the drawing. It is provided so as to be bent and projected in a horizontal direction from a hook projecting window 36 (see FIG. 7) formed in the pipe 32. Reference numeral 37 is an insertion rod fitted in the upper portion of the pulling pipe 32, and the pulling pipe including the pulling bolt 33 in the male screw 38 formed on the outer surface of the pulling pipe 32 protruding upward from the upper end surface of the rod. A nut 39 for moving the 32 up and down is screwed. Further, a nut 40 for moving the pulling bolt 33 up and down with respect to the pulling pipe 32 is screwed into the pulling up bolt 33 protruding upward from the upper end surface of the pulling pipe 32.

Reference numeral 45 denotes a cylindrical cover body having an outwardly facing flange 46 at the lower end opening and arranged so as to cover the pulling jig 31, and has a round hole 47 formed slightly larger than the insertion rod 37. A 0-ring that is provided on the wall and has a plurality of annular recessed grooves 48 formed in the round hole, and seals a gap between the round hole 47 and the insertion rod 37 in the recessed groove.
50 are arranged. A male thread 51 is formed on the upper outer peripheral surface of the cover body 45, and a female thread 54 formed on the inner peripheral surface is formed on the male thread.
The screw cap 53 formed with is formed to be screwed. 55 is a round hole formed on the top wall of the screw cap 53,
The small diameter portion 56 at the upper end of the insertion rod 37 is sized to fit therein. The water stopcock 16 is a pull-up pipe 32 between the outer cylinder 12 and the insertion rod 37.
It is arranged to fit in.

FIGS. 4 to 6 show members required after the work before mounting. In the figure, 60 is a flange 6 at the upper and lower ends.
A saddle having 1, 62, an annular recessed groove 63 opening in the lower end direction is formed in a lower end flange 61 of the saddle, and a 0 ring
64 are provided. Window 66 formed on the side wall of saddle 60
A plug 67 is attached to the. Also, the lower end flange 69 of the valve 68 is attached to the upper end flange 61 of the saddle 60,
The lower end flange 46 of the cover body 45 assembled as described above is attached to the upper end flange 71 of the valve 68.

A method of mounting the water faucet 1 to the branch port 9 of the ductile pipe 6 under uninterrupted water will be described below.

First, the saddle 60 and the valve 68 described above are used, and these are fastened and fixed to the ductile pipe 6 with a bolt and nut (not shown). Thereafter, a well-known punching machine (not shown) is attached to the upper portion of the valve 68 to punch the pipe 6, and the branch port 9 is opened. The valve 68 is then closed and the punch is removed from the top of the valve 68.

Next, the lower end portion of the insertion rod 37 is lowered to the lower portion of the cover body 45, and the outer cylinder 12 in which the stopper ring 5 is deposited on the upper surfaces of the water stopcock 16 and the annular flange portion 13 is lowered to the pulling pipe 32. Insert and install from the beginning. Further pull up hook 35 to the window
After inserting the inner cylinder 11 with the rubber ring 3 and the taper ring 4 into the pull-up pipe 32 in the state of being housed from 36, pull the pull-up bolt 33 in the pull-up pipe 32 with the nut 40 slightly loosened. Push down,
The pull-up hook 35 is projected outward from the window 36, the insertion rod 37 is pulled up, and the whole is housed in the cover body 45 (Fig. 3).
(B)).

Next, the cover body 45 is mounted on the valve 68 fixed together with the saddle 60 when the branch opening 9 is opened as shown in FIG.
Install as. After mounting, open the valve 68 and press the rubber ring 3
The insertion rod 37 is pushed in until the annular flange portion 27 of is in contact with the outer peripheral surface of the pipe 6 having the branch port 9, and the screw cap 53
To the male screw 51 of the cover body 45. Then, by rotating this screw cap 53 and inserting the insertion rod 37, the outer cylinder
The lower small-diameter cylindrical portion 12a of 12 is a rubber ring 3 attached to the branch port 9
Is pressed (press-fitted) inside, and the rubber ring is compressed between the lower small-diameter cylindrical portion 12a of the outer cylinder 12 and the branch port 9 to stop the fluid (FIG. 5). The annular projection 23 of the rubber ring 3 bends outward when the lower small-diameter cylindrical portion 12a of the outer cylinder 12 is press-fitted.

Next, when the nut 39 screwed into the pull-up pipe 32 is rotated to screw up the pull-up pipe 32 together with the pull-up bolt 33, the inner cylinder 11 is pulled up by the pull-up hook 35, and the water shutoff plug is pulled up. The stopper ring 5 held by 16 is once expanded by the upper end portion of the inner cylinder 11 and sticks to the inner cylinder 11, and when the inner cylinder 11 is pulled up to a predetermined position, it is restored and accommodated in the annular recessed groove 26 and the inner cylinder 11 is pressed.
To prevent falling off. At the time of pulling up the inner cylinder 11, the taper ring 4 comes into contact with the annular protrusion 23 of the rubber ring 3 and at the same time, the first inner cylinder 11
The diameter of the rubber ring 3 is increased by the inclined surface 21 while moving downward, and the annular projection 23 of the rubber ring 3 is diverged until it is received by the second inclined surface 22.
The inner surface of the tube is pressed against the rim (Fig. 6). The outer diameter of the expanded taper ring 4 is slightly larger than the diameter of the branch port 9, and even if the water dip 1 is pushed outward due to an abnormally large inner pressure of the pipe, the ring contacts the inner surface of the pipe. This prevents the water faucet 1 from coming off.

Next, the nut 39 is once loosened, the nut 40 of the lifting bolt 33 is rotated while the lifting pipe 32 is pushed down, and when the lifting bolt 33 is raised, the lifting hook 35 protruding from the window 36 is removed. It is stored in the pull-up pipe 32 (Fig. 7). Then, nut 39
Is rotated to lift the pulling pipe 32 to the upper part of the water stopcock 16.
The screw cap 53 may be removed at any time after the pulling operation is completed. Next, the plug 67 provided on the side wall of the saddle 60
After removing the turbid water in the hole, the valve of the water stopcock 16 is closed with a tool such as a handle. This operation is saddle 60,
It may be after removing the valve 68 and the cover body 45. A cock may be attached as a substitute for the plug 67.

Next, the insertion rod 37 is removed from the water stopcock 16, the saddle 60, the valve 68, and the entire cover body 45 are removed, and the water stopcock 16 is removed.
Install the water supply pipe, etc. This completes the installation of the seismic diversion faucet.

FIG. 8 shows a modification of the pulling jig. The pull-up jig 81 is pivotally supported by the base ends of a pair of pull-up hooks 82 being urged by a ring spring 84 on a mounting shaft 83, and when the pull-up bolt 85 is moved downward, as shown in FIG. Pulling hook 82 is ring spring 84
Hook extension window 87 formed on the pulling pipe 86 against the bias of
When the pull-up bolt 85 is moved upward, the pull-up hook 82 is housed in the pull-up pipe 86 from the hook projecting window 87 by the ring spring 84 as shown in FIG. Reference numeral 88 is a contact surface when the pull-up hook 82 is housed.
Other configurations are similar to those of the pulling jig 31 described above, and in the case of this pulling jig 81 as well, the nut 40 of the pulling bolt 85 is rotated to move the pulling bolt 85 in the same manner as the pulling jig 31. When raised, the pull-up hook 82 protruding from the window 87 is housed in the pull-up pipe 86.

FIG. 9 shows another embodiment of the water faucet. In the water faucet 90 of this embodiment, a female screw 93 is formed on the inner peripheral surface of a lower small-diameter tubular portion 92a of an outer cylinder 92. Male thread 94 to be screwed to 93
Is formed on the outer peripheral surface of the inner cylinder 91. Further, the inner peripheral surface of the inner cylinder 91 is a polyhedron 95 such as a hexahedron, and a screw-up bolt 97 having a polygonal wrench-shaped lower end engaging convex portion 96 that engages with this polyhedron is provided on the outer cylinder 92. A water stopcock 16 is inserted and arranged. Therefore, in the case of this water faucet 90, the inner cylinder 91
After the outer cylinder 92 and the outer cylinder 92 are screwed into the branch port 9 while being screwed with the screws 93 and 94, and the lower small-diameter cylindrical portion 92a of the outer cylinder 92 is pressed into the rubber ring 3 attached to the branch port 9. , A lower end engaging portion 96 engaged by rotating the screw-up bolt 97
Then, the inner cylinder 91 is screwed up to a predetermined position via the polyhedron 95 and the taper ring 4 divided into one circumference is formed in the same manner as in the above embodiment.
It is possible to press the annular projection 23 of the rubber ring 3 against the inner edge of the pipe inner surface of the branching port 9 until it is received by the second inclined surface 22 of the inner cylinder 11. 98 is a packing. Since other configurations are similar to those of the water faucet 1 described above, the same parts are designated by the same reference numerals and the description thereof will be omitted.

Although each of the above-described embodiments has been described as a method of mounting the water faucet 1 under uninterrupted water, it goes without saying that the ductile pipe 6 can also be installed when the water is disconnected. Further, the specific configurations and the like of the pulling jigs 31 and 81 shown in the respective embodiments can be appropriately changed in design without departing from the scope of the invention.

[0031]

According to the first and second aspects of the present invention, the following advantages are obtained. (1) The lower small-diameter tubular portion of the tubular metal fitting is press-fitted into the rubber ring to press and close the rubber ring against the wall surface of the branch port, and the annular flange portion of the outer cylinder of the metal fitting and the second inclination of the inner cylinder. Since the rubber ring is sandwiched and attached between the taper ring divided by the circumference supported by the surface, the ground changes due to an earthquake or the like, and the lateral force is applied to the diversion faucet. Even if it bends, the elastic force of the annular flange at the upper end of the rubber ring and the inverted annular protrusion at the lower end of the rubber ring absorbs lateral force without difficulty, and the rubber ring can be easily bent without being damaged. In addition, the water-stopping function of the fluid is not deteriorated, and the water faucet is less likely to be broken. (2) Since the inner ring is prevented from coming out by the taper ring whose outer diameter is larger than the diameter of the branch port, it is possible to prevent the water faucet from coming off. (3) Since the taper ring presses the annular protrusion of the rubber ring against the inner surface of the pipe, sufficient water-stopping property can be maintained even when the pipe, for example, the mortar lining inside the ductile pipe is broken or cracked. (4) Since the diameter of the taper ring can be expanded with a comparatively small force, its handling is easy. (5) Even if chips from drilling are left on the top of the pipe on the branch port, the outer and inner cylinders can be attached straight by being pressed by the annular flange of the rubber ring, which affects the compaction of the rubber ring. do not do. Also, even if the water dip is installed while the chips are sandwiched, and then the chips fall off due to an earthquake or the like, it is not related to the sealing mechanism by the rubber ring that is compacted on the wall surface of the branch port by press fitting the tubular metal fitting. There is no reduction in the fluid sealing effect.

According to the inventions of claims 3 to 8, it is possible to very easily attach the water faucet as described above to the branch port of the fluid pipe through an attachment mechanism such as a pulling jig. The invention can be installed under uninterrupted water and is extremely practical.

[Brief description of 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 shows a jig for pulling up a water faucet and members required for pre-installation work. (A) is a vertical sectional front view of a screw cap, and (B) is a part of the other members omitted. FIG.

FIG. 4 is a partially omitted vertical sectional front view showing a pull-up jig of a water faucet and members required after a pre-installation work.

5A and 5B are explanatory views of an operation similar to FIG.

FIG. 6 is an explanatory view of an operation similar to that of FIG.

FIG. 7 is an operation explanatory view showing an enlarged lower end portion of the pulling member.

FIG. 8 shows a modified example of the pulling jig, (A) showing a state in which the pulling hook is overhanging, and (B) showing a state in which the pulling hook is housed in the pulling pipe. It is a figure.

FIG. 9 is a vertical sectional front view showing another embodiment of the water faucet, (A) showing a state before attachment and (B) showing a state after attachment.

FIG. 10 is a vertical cross-sectional front view of a conventional water dip plug mounted on a branch port of a fluid pipe.

[Explanation of symbols]

 1,90 Water tap 2 Cylindrical metal fittings 3 Rubber ring 4 Taper ring 5 Stopper ring 6 Ductile tube 9 Branching port 11,91 Inner tube 12,92 Outer tube 12a Lower small diameter tube section 12b Upper large diameter tube section 13 Annular flange section 15, 25 Tapered or rounded surface 16 Water stopper 17 Mounting screw 20 Annular convex portion 21 First inclined surface 22 Second inclined surface 23 Annular protrusion 26 Annular groove 31, 81 Pulling jig 32, 86 Pulling pipe 33,85 Pull-up bolt 35,82 Pull-up hook 36,87 Hook protruding window 39,40 Nut 45 Cylindrical cover body 60 Saddle 68 Valve 93 Female thread 94 Male thread 97 Screw-up bolt

Claims (8)

(57) [Claims] 1. A hollow cylindrical metal fitting having upper and lower end openings, and a rubber ring fitted and fitted to an outer periphery of a lower end portion of the cylindrical metal fitting, and provided with an annular projection on the lower end portion. In a water faucet in which a tubular metal fitting having a rubber ring is press-fitted and fitted into a branch port formed in a fluid pipe, the tubular metal fitting is composed of an inner cylinder and an outer cylinder, and the outer cylinder is an inner cylinder. A small-diameter cylinder that is slidably fitted to the outer periphery of the lower-diameter cylinder, and an upper-large-diameter cylinder that is continuously provided via an annular flange that extends outward from the upper end of the small-diameter cylinder. A taper surface or a rounded surface is formed on the outer circumference of the lower end of the part toward the lower side, and a mounting part such as a water stop is formed on the inner surface of the large diameter cylinder part. An annular convex portion is formed which has a first inclined surface having a large diameter toward and a second inclined surface inclined upward from the lower end of the inclined surface. The first inclined surface of the annular convex portion is fitted with a circumferentially divided taper ring that is inclined in substantially the same direction as the second inclined surface and supports the lower end surface of the annular protrusion of the rubber ring. The outer diameter of the tapered ring is smaller than the branch opening in a normal state, but when the taper ring is pushed down by the rubber ring and moved downward along the first inclined surface, the diameter increases and the outer diameter becomes larger than the branch opening.
The inner cylinder is formed with an annular groove on the outer peripheral surface of the upper end portion, and a stopper ring is arranged between the annular groove and the upper surface of the annular step portion. A water faucet characterized in that an annular flange portion that abuts a lower surface of the annular flange portion of the outer cylinder is formed at an upper end portion protruding from a branch opening of the rubber ring. 2. A hollow cylindrical metal fitting having upper and lower end openings, and a rubber ring fitted and mounted on an outer circumference of a lower end portion of the cylindrical metal fitting and having an annular protrusion at the lower end. In a water faucet in which a tubular metal fitting having a rubber ring is press-fitted and fitted into a branch port formed in a fluid pipe, the tubular metal fitting is composed of an inner cylinder and an outer cylinder, and the outer cylinder is an inner cylinder. A female screw threaded to the external thread formed on the outer peripheral surface of the lower cylindrical portion formed on the inner peripheral surface and an upper portion continuously provided via an annular flange portion protruding outward from the upper end of the small cylindrical portion. It consists of a large-diameter cylindrical part, and a taper surface or a rounded surface is formed on the outer periphery of the lower end of the small-diameter cylindrical part, the diameter of which decreases downward, and a mounting part such as a water stopper is formed on the inner surface of the large-diameter cylindrical part. The inner cylinder has a first inclined surface having a larger diameter toward the outer periphery of the lower end and a second inclined surface inclined upward from the lower end of the inclined surface. An annular convex portion having an inclined surface is formed, and a first inclined surface of the annular convex portion is inclined in substantially the same direction as the second inclined surface and supports a lower end surface of the annular protrusion of the rubber ring. A split taper ring is fitted and arranged, and the outer diameter of this taper ring is smaller than the branch port in the normal state, but when it is pushed down by the rubber ring and moved down along the first inclined surface, the outer diameter is expanded. Is larger than the branch opening so that it can be received by the second inclined surface, and an annular flange portion that abuts the lower surface of the annular flange portion of the outer cylinder is formed at the upper end portion protruding from the branch opening of the rubber ring. A water faucet characterized by having. 3. A pull-up jig having a pull-up member having a pull-up hook that can be extended from a hook projecting window formed at a lower end portion of the pull-up pipe, the pull-up member being housed in the pull-up pipe so as to be vertically movable, The pulling hook of this pulling jig is provided with a taper ring for dividing the circumference and an annular flange portion at the upper end portion on the pulling hook protruding from the window, and an annular projection portion is provided at the lower end portion. A rubber ring is attached to the outer periphery by the taper ring so that the lower end surface of the annular protrusion can be supported, and the first inclined surface having a larger diameter is downwardly inclined to the outer periphery of the lower end portion and inclined upward from the lower end of the inclined surface. An inner cylinder formed with an annular convex portion having a second inclined surface, a lower small-diameter cylindrical portion slidably fitted to the outer periphery of the inner cylinder, and an annular flange protruding outward from the upper end of the small-diameter cylindrical portion. Small diameter part consisting of an upper large diameter cylinder part connected continuously through the Insert the outer cylinder so that the tapered surface or rounded surface that is formed with a small diameter downward toward the outer periphery of the lower end of the cylindrical portion is between the inner cylinder and the rubber ring, and that the outer cylinder is located above the inner cylinder. In addition, after disposing and supporting a stopper ring on the upper surface of the annular flange portion of the outer cylinder, the pull-up jig is pushed from the lower end side into a branch port bored in the fluid pipe and press-fitted to the rubber ring. After the annular flange part of the outer cylinder contacts the outer peripheral surface of the pipe, and the lower small-diameter cylindrical part of the outer cylinder is pushed along the inside of the rubber ring so that the annular flange part of the outer cylinder contacts the upper surface of the annular flange part of the rubber ring. , The pull-up jig is raised to move the inner cylinder upward along the inner peripheral surface of the lower small-diameter cylindrical portion of the outer cylinder, and the upward movement expands the taper ring that relatively lowers the first inclined surface. The annular protrusion of the rubber ring is pressed against the inner wall of the pipe by the diameter while being received by the second inclined surface. Both mounting method of diversion plug which comprises bringing the stopper ring in an annular groove of the outer peripheral surface of the upper end portion of the inner tube is elastically fitted. 4. A screw-up member, the outer peripheral surface of the lower end portion of which is formed into a polygonal wrench-shaped rotating engagement portion, wherein the screw-up member has a tapered ring divided into one circumference and an annular flange at the upper end portion. A rubber ring having a portion provided with an annular protrusion at the lower end is attached to the outer periphery so that the lower end surface of the annular protrusion can be supported by the taper ring, and a screw is formed on the outer peripheral surface, And an inner cylinder formed with an annular convex portion on the outer periphery of the lower end portion, which has a first inclined surface having a large diameter downward and a second inclined surface inclined upward from the lower end of the inclined surface, and a male screw of the inner cylinder A lower small-diameter cylindrical portion having an internal thread formed on the inner peripheral surface thereof, and an upper large-diameter cylindrical portion connected continuously via an annular flange portion projecting outward from the upper end of the small-diameter cylindrical portion. A taper surface or an arch formed on the outer periphery of the lower end of the small-diameter cylindrical portion to have a small diameter downward. And an engaging portion formed on the inner peripheral surface of the inner cylinder so that the outer cylinder is located on the inner cylinder and the outer cylinder is positioned between the inner cylinder and the rubber ring. After being engaged with and engaged with the rotation engaging portion of, the screw-up member is pushed from the lower end side into the branch port formed in the fluid pipe and press-fitted, and the annular flange portion of the rubber ring is attached to the outer periphery of the pipe. Rotate the screw-up member after contacting the surface and the lower small-diameter cylinder part of the outer cylinder is pushed along the inner side of the rubber ring so that the annular flange part of the outer cylinder contacts the upper surface of the annular flange part of the rubber ring. Then, while rotating the inner cylinder, the upper cylinder is moved upward along the inner peripheral surface of the lower small-diameter cylindrical portion of the outer cylinder, and the upward movement causes the taper ring that relatively moves down the first inclined surface to expand in diameter. A method of mounting a water faucet, characterized in that the annular projection of the rubber ring is pressed against the inner wall of the pipe until it is received by the second inclined surface. 5. A valve is attached to the fluid pipe, a branch port is opened in the fluid pipe portion covered with the valve, and then the valve is opened to push the pulling jig into the branch port from the lower end side. The method of mounting the water faucet according to item 3. 6. A valve is attached to the fluid pipe, a branch port is opened in the fluid pipe part covered with the valve, and then the valve is opened to push the screw-up member into the branch port from the lower end side. How to install the water faucet described in 4. 7. A pull-up pipe having a hook projecting window formed at a lower end thereof, and a pull-up pipe housed in the pull-up pipe so as to be vertically movable and having a pull-up hook projecting from the hook projecting window at a lower end thereof. It has a member and has a taper ring divided into one circumference and an annular flange portion at the upper end on the pulling hook that is projected from the hook projecting window.
An inner cylinder having a rubber ring provided on its outer periphery with an annular protrusion at its lower end, and a lower small-diameter cylindrical portion slidably fitted on the outer periphery of the inner cylinder, and an outward direction from the upper end of the small-diameter cylindrical portion. Between the inner cylinder and the rubber ring, a taper surface or a rounded surface is formed on the outer periphery of the lower end portion of the lower small-diameter tubular portion, which is formed of an upper large-diameter tubular portion that is continuously provided via an overhanging annular flange portion and has a smaller diameter downward A pull-up jig that fits the outer cylinder so that the outer cylinder is located above the inner cylinder, and arranges and supports a stopper ring on the upper surface of the annular flange portion of the outer cylinder; A holding member that holds the pulling jig so that it can move up and down and a branch port that is drilled in the fluid pipe are detachably attached, and the lower end of the pulling jig that is held by the holding member is the branch port. A valve having a mounting portion to which a lower end portion of the holding member is detachably mounted so that the holding member can be fitted; From the lower end side of the upper jig, the annular flange part of the rubber ring contacts the outer peripheral surface of the fluid pipe, and the lower small-diameter cylinder part of the outer cylinder is pushed along the inside of the rubber ring so that the annular flange part of the outer cylinder is made of rubber. A first operating member that is pushed into the branch opening so as to contact the upper surface of the annular flange portion of the ring, a second operating member that pulls up the pulling jig after pushing, and a pulling hook after pulling up from the hook overhanging window into the pulling pipe. A water faucet mounting device, comprising: a third operating member for moving the pulling member upward with respect to the pulling pipe so as to be housed. 8. A taper ring having a circumferential circumference divided into a polygonal wrench-shaped engaging portion for rotation, the outer peripheral surface of the lower end portion engaging with an engaging portion formed on the inner peripheral surface of the inner cylinder. An inner cylinder having a rubber ring provided with an annular flange on the upper end and an annular protrusion on the lower end, and a female screw threaded on a male screw formed on the outer peripheral surface of the inner cylinder. An outer circumference of a lower end portion of the lower small-diameter tubular portion, the lower small-diameter tubular portion having a lower small-diameter tubular portion and an upper large-diameter tubular portion connected continuously via an annular flange portion protruding outward from an upper end portion of the small-diameter tubular portion. A screw-up member fitted with an outer cylinder such that a tapered surface or a rounded surface formed to have a small diameter toward the lower side falls between the inner cylinder and the rubber ring, and the outer cylinder is located on the inner cylinder. A holding member that holds the screw-up member such that the screw-up member is rotatable and can move up and down, and a branch formed in the fluid pipe. A valve that is detachably attached in communication with the mouth, and has a mounting portion that detachably attaches the lower end of the holding member so that the lower end of the screw-up member held by the holding member can be fitted into the branch port. , The flange portion of the rubber ring is in contact with the outer peripheral surface of the fluid pipe from the lower end side of the screw-up member, and the lower small-diameter tubular portion of the outer cylinder is pushed in along the inner side of the rubber ring to form the annular flange portion of the outer cylinder. While pushing into the branch so that it contacts the upper surface of the annular flange of the rubber ring,
An attachment device for a water faucet, comprising: an operating member for rotating and pulling up an inner cylinder after being pushed.