JP2019173852A - Corporation cock - Google Patents

Abstract

To provide a corporation cock that can prevent fluid from leaking from a gap between a branch pipe connection part and a branch pipe.SOLUTION: The corporation cock has a saddle part 2 attached to a main pipe P, a branch cylinder part 3 standing erect on the saddle part 2, a branch pipe connection part 4 that is provided on the branch cylinder part 3 and extends in a direction crossing the branch cylinder part 3, and a polyolefin resin-made branch pipe fitted into the branch pipe connection part 4.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a water faucet.

Conventionally, as shown in Patent Document 1 below, a water faucet that branches a fluid flowing through a main pipe is known. The water faucet includes a saddle portion attached to the main pipe, a branch cylinder portion erected on the saddle portion, a branch pipe connection portion provided in the branch cylinder portion and extending in a direction crossing the branch cylinder portion, It has.
A threaded portion is formed at the end of the branch pipe connecting portion. By connecting the branch pipe to the end of the branch pipe connecting portion using this threaded portion, the fluid flowing through the main pipe can be branched into the branch pipe.

JP 2000-81186 A

  However, in the conventional drainage member, the branch pipe connection portion and the branch pipe are connected using a screw portion formed at the end of the branch pipe connection portion. For this reason, for example, when a large external force is applied between the branch pipe connecting portion and the branch pipe due to an earthquake or the like, there is a possibility that a gap is generated between the screw portions and the fluid leaks.

  This invention is made | formed in view of the situation mentioned above, Comprising: It aims at providing the water faucet which can prevent that a fluid leaks from between a branch pipe connection part and a branch pipe.

In order to solve the above problems, the present invention proposes the following means.
The water faucet according to the present invention includes a saddle portion attached to a main pipe, a branch cylinder portion standing on the saddle portion, and a branch provided in the branch cylinder portion and extending in a direction intersecting the branch cylinder portion. A water faucet comprising: a pipe connecting portion; and a branch pipe made of polyolefin resin fitted to the branch pipe connecting portion.

In this case, since the branch pipe is fitted to the branch pipe connecting portion, there is no need to interpose a screw portion between the branch pipe connecting portion and the branch pipe. As a result, even if a large external force is applied between the branch pipe connection portion and the branch pipe, fluid can be prevented from leaking between the branch pipe connection portion and the branch pipe.
In addition, since the branch pipe is made of polyolefin resin, other pipes can be easily connected to the branch pipe while ensuring liquid-tightness using, for example, an electric fusion joint or the like. Can be secured.

  Moreover, you may provide the fixing ring which contact | abuts the said branch pipe to radial direction or an axial direction, and fixes the said branch pipe to the said branch pipe connection part.

  In this case, by fixing the branch pipe to the branch pipe connecting portion using the fixing ring, it is possible to reliably suppress the branch pipe from coming out of the branch pipe connecting portion.

  According to the present invention, it is possible to prevent fluid from leaking from between the branch pipe connecting portion and the branch pipe.

It is a longitudinal cross-sectional view which shows the part except the branch pipe connection part and branch pipe among the states which connected the water faucet concerning 1st Embodiment of this invention to the main pipe. It is a longitudinal cross-sectional view which shows the branch pipe connection part in the water tap shown in FIG. 1, and a branch pipe. It is a longitudinal cross-sectional view which shows the branch pipe connection part and branch pipe in the water stopper which concerns on 2nd Embodiment of this invention. It is a longitudinal cross-sectional view which shows the branch pipe connection part and branch pipe in the water stopper which concerns on 3rd Embodiment of this invention.

(First embodiment)
Hereinafter, the water faucet according to the first embodiment of the present invention will be described with reference to FIGS. 1 and 2.
The water faucet 100 according to the present embodiment includes a saddle body 1 attached to the main pipe P, an upper clamp 10 that fixes the saddle main body 1 to the main pipe P, and a lower clamp 20. Here, the water tap 100 is shown as a device for branching out tap water from the main pipe P through which tap water flows.
In addition, in FIG. 1, the front-end | tip part of the branch pipe connection part mentioned later and the branch pipe are not shown in figure.

The saddle body 1 is formed of a metal such as cast iron, SUS, gun metal, or true casting, or a composite of these metals and a polyolefin resin such as polyethylene resin or polypropylene resin.
The saddle body 1 is provided on the side of the saddle portion 2 mounted so as to cover a part of the surface of the main pipe P, the branch cylinder portion 3 erected on the saddle portion 2, and the branch cylinder portion 3. A branch pipe connecting portion 4 extending in a direction intersecting with the cylindrical portion 3.
The branch cylinder part 3 and the branch pipe connection part 4 are integrally formed.

  The saddle portion 2 is made of a metal such as cast iron, SUS, gun metal, or true casting, or a polyolefin resin such as polyethylene resin or polypropylene resin, so that the cross section covers the surface of the upper half of the cross section circle of the main pipe P. It is formed in an arc shape. The length of the saddle portion 2 along the axial center direction of the main pipe P is large enough to allow the branch cylinder portion 3 to be erected at a substantially central position in the length direction of the saddle portion 2. The length is determined to be at least twice the diameter of the branch tube portion 3.

  The saddle portion 2 has a thickness that can sufficiently hold the branch tube portion 3. Further, the thickness of the saddle portion 2 is a stop which will be described later provided on the lower surface of the saddle portion 2 when a pressing force is applied from the upper surface side to the lower surface (bottom surface) of the saddle portion 2 by a clamping operation described later. It is determined so that a sufficient pressing force can be applied to the water member 6.

A concave groove 5 is formed on the lower surface side of the saddle portion 2. A water stop member 6 made of an elastic body such as synthetic rubber is provided in the recessed groove 5 so as to be partially received.
A concave groove 5 is formed so as to surround a through hole formed on the lower surface side of the saddle portion 2, that is, on the side facing the surface of the main pipe P and where the branch tube portion 3 is located. A water stop member 6 is provided in the recessed groove 5 so that a part thereof protrudes from the lower surface of the saddle portion 2.

The branch cylinder part 3 is made of a metal such as cast iron, SUS, gun metal, or true casting, and is formed of a cylindrical body that is erected so as to communicate with a through hole formed at a substantially central position on the upper surface of the saddle part 2. Further, the branch cylinder part 3 is provided with a space between the outer surface of the saddle part 2 and the outer surface of the branch cylinder part 3 in the through-hole, and an annular stop (not shown) is provided between the saddle part 2 and the branch cylinder part 3. A water material and an annular retaining member are provided and are configured to rotate about the center of the through hole.
The standing height of the branch cylinder portion 3 is determined by the length of a built-in cylindrical seal plug (not shown).

  That is, the standing height of the branch tube portion 3 is such that the seal plug moves upward, and the lower end portion of the seal plug is provided at approximately the middle of the height of the branch tube portion 3. When the position is slightly above the position, the upper end of the seal plug is determined not to protrude from the upper end of the branch tube portion 3.

  A seal cap 7 is provided on the upper part of the branch cylinder part 3. The seal cap 7 is configured to be screwed onto and attached to the upper portion of the branch cylinder portion 3 and is configured to keep the inside of the branch cylinder portion 3 watertight via a packing (not shown) when mounted. ing.

The branch pipe connection portion 4 is made of a metal such as cast iron, SUS, gun metal, or true casting, and is formed of a cylindrical body whose base end portion is connected to the side wall of the branch tube portion 3. The inside of the branch cylinder part 3 and the inside of the branch pipe connection part 4 communicate with each other, and the branch cylinder part 3 and the branch pipe connection part 4 are integrally molded by a mold or the like. The branch pipe connection portion 4 extends in a direction intersecting with the branch tube portion 3. In the illustrated example, the branch pipe connection portion 4 is orthogonal to the branch tube portion 3.
The configuration of the distal end portion of the branch pipe connecting portion 4 will be described later.

  The upper clamp 10 is made of, for example, a metal such as cast iron, and is configured to cover the upper surface of the saddle portion 2 of the saddle body 1. Therefore, the upper clamp 10 is formed in a semicircular cross section in the same manner as the saddle portion 2 having a semicircular cross section.

  At both ends of the upper clamp 10, flanges 10a are extended. That is, the flange 10a is provided on both ends of the semicircle of the upper clamp 10 having a semicircular cross section, and the extending direction of the flanges 10a coincides with the line direction connecting both ends of the semicircle. It is provided to do.

  A cutout portion 11 is formed in the upper clamp 10. The notch portion 11 is formed at a location where the branch tube portion 3 and the branch pipe connecting portion 4 are located when the upper clamp 10 is placed on the upper surface of the saddle portion 2. Therefore, the upper clamp 10 can be placed on the upper surface of the saddle portion 2 without interfering with the branch tube portion 3 and the branch pipe connection portion 4, and the workability of installing the water faucet 100 can be improved. .

  Bolt holes 12 are formed in the flange 10 a of the upper clamp 10. That is, the bolt holes 12 are formed at predetermined intervals from each other in the longitudinal direction of the flange 10a (when the upper clamp 10 is placed on the main pipe P, the axial center direction of the main pipe P). Yes.

The lower clamp 20 is made of, for example, a metal such as cast iron, and is formed in an arc shape (semicircle) so as to cover substantially the lower half of the cross-sectional circle of the main pipe P.
That is, the lower clamp 20 is formed in an arc shape whose cross-sectional shape is curved opposite to the upper clamp 10, and the size of the lower clamp 20 is substantially the same as that of the upper clamp 10. The cut-out portion 11 is not formed.

The lower clamp 20 is formed with a flange 20 a and a bolt hole 21. That is, the flange 20a is formed in the same size and shape as the flange 10a of the upper clamp 10, and the flange 20a is similar to the bolt hole 12 formed in the flange 10a of the upper clamp 10. Bolt holes 21 are formed.
The flange 20a and the bolt hole 21 of the lower clamp 20 are determined so as to face the flange 10a and the bolt hole 12 of the upper clamp 10, respectively, as shown in FIG.

In the present embodiment, as shown in FIG. 2, the water faucet 100 includes a branch pipe 13 made of polyolefin resin that is fitted to the branch pipe connecting portion 4. The branch pipe 13 is fitted to the distal end portion of the branch pipe connection portion 4 and is arranged coaxially with the central axis O of the branch pipe connection portion 4.
At the distal end portion of the branch pipe connecting portion 4, a reduced diameter cylindrical portion 4 </ b> A having a smaller diameter than the proximal end portion is formed. The reduced diameter cylinder portion 4A is disposed coaxially with the central axis O.

On the outer peripheral surface of the reduced diameter cylindrical portion 4A, an engagement protrusion 4B is formed that protrudes outward in the radial direction orthogonal to the central axis O.
The engagement protrusion 4B is formed over the entire area in the circumferential direction that circulates around the central axis O. A plurality of engaging protrusions 4B are formed at intervals in the axial direction along the central axis O. In the illustrated example, three engaging protrusions 4B are formed.

The tip of the reduced diameter cylindrical portion 4A has a tapered shape that gradually decreases in diameter toward the outside in the axial direction.
The branch pipe 13 is externally fitted to the reduced diameter cylindrical portion 4A in an expanded state. Engagement protrusions 4B of the reduced diameter cylinder portion 4A are engaged with the inner peripheral surface of the branch pipe 13. Thereby, it is suppressed that the branch pipe 13 comes off from the branch pipe connection part 4.

Further, the water faucet 100 of the present embodiment includes a fixing ring 14 that fixes the branch pipe 13 to the branch pipe connecting portion 4.
The fixing ring 14 is disposed coaxially with the central axis O, and is in contact with the branch pipe 13 from the outside in the radial direction. Further, the fixing ring 14 is in contact with a portion of the branch pipe connecting portion 4 that is continuous with the reduced diameter cylindrical portion 4A in the axial direction.

The fixing ring 14 is formed of a material having a certain rigidity, such as a metal material such as cast iron, SUS, gun metal, or true casting.
The inner diameter of the fixing ring 14 is slightly smaller than the outer diameter of the branch pipe 13 expanded by the reduced diameter cylindrical portion 4A, and larger than the outer diameter of the branch pipe 13 not expanded.
The outer diameter of the fixing ring 14 is smaller than the portion of the branch pipe connecting portion 4 that is continuous with the reduced diameter cylindrical portion 4A in the axial direction.

Next, a method for fitting the branch pipe 13 to the branch pipe connecting portion 4 will be described.
First, the end portion on one side of the branch pipe 13 is externally fitted to the reduced diameter cylindrical portion 4 </ b> A of the branch pipe connecting portion 4. At this time, one end portion of the branch pipe 13 is connected to the reduced diameter cylindrical portion 4A in a state where the diameter is increased.
Then, the fixing ring 14 is inserted from the other end portion of the branch pipe 13 and is moved in the axial direction toward the one end portion of the branch pipe 13 to be fitted.

  Finally, the inner peripheral surface of the fixing ring 14 is brought into contact with the end portion on one side of the branch pipe 13 from the outside in the radial direction, that is, the end portion on one side of the branch pipe 13 is set in the radial direction by the fixing ring 14. Fix it while pressing it toward the inside. Thereby, the edge part of one side of the branch pipe 13 is fixed in the state pinched | interposed between the radial directions of the fixing ring 14 and the diameter-reduced cylinder part 4A.

In this state, by connecting another polyolefin resin pipe to the other end of the branch pipe 13 using, for example, an electric fusion joint or the like, the flow path branched by the water faucet 100 can be arbitrarily set. Can be plumbed.
In addition, when connecting another pipe | tube to the branch pipe 13, you may connect by another means, without using an electroweld joint.

As described above, according to the water faucet 100 according to the present embodiment, the branch pipe 13 is fitted to the branch pipe connecting portion 4, so that a screw is interposed between the branch pipe connecting portion 4 and the branch pipe 13. There is no need to interpose a part.
Thereby, even if a large external force is applied between the branch pipe connection portion 4 and the branch pipe 13, it is possible to prevent fluid from leaking between the branch pipe connection portion 4 and the branch pipe 13.

Further, since the branch pipe 13 is made of a polyolefin resin, for example, another pipe can be easily connected to the branch pipe 13 while ensuring liquid-tightness using an electric fusion joint or the like. Can be ensured.
Further, by fixing the branch pipe 13 to the branch pipe connecting portion 4 using the fixing ring 14, it is possible to reliably suppress the branch pipe 13 from coming off the branch pipe connecting portion 4.

(Second Embodiment)
Next, a water faucet 100B according to a second embodiment of the present invention will be described with reference to FIG. In addition, in this embodiment, the same code | symbol is attached | subjected about the structure same as 1st Embodiment mentioned above, and the description is abbreviate | omitted. Also, the description of the same action is omitted.

As shown in FIG. 3, in the water faucet 100 </ b> B according to the present embodiment, in the branch pipe connecting portion 4, a portion that protrudes outward in the radial direction is fixed to a portion that is continuous with the reduced diameter cylindrical portion 4 </ b> A A flange portion 4C is formed. The fixing ring 14 is in contact with the fixing flange portion 4C in the axial direction.
By adopting such a configuration, it becomes possible to reduce the outer diameter of the branch pipe connecting portion 4 except for the reduced diameter cylindrical portion 4A and the fixed flange portion 4C, and the water faucet 100B has a compact configuration. It can be.

(Third embodiment)
Next, a water faucet 100C according to a third embodiment of the present invention will be described with reference to FIG. In addition, in this embodiment, the same code | symbol is attached | subjected about the structure same as 1st Embodiment mentioned above, and the description is abbreviate | omitted. Also, the description of the same action is omitted.

As shown in FIG. 4, in the water faucet 100C according to the present embodiment, the diameter-reduced cylindrical portion 4A is not formed at the distal end portion of the branch pipe connecting portion 4, and the diameter is expanded more than the base end portion. A cylindrical portion 4D is formed.
The branch pipe 13B is inserted and fitted inside the enlarged diameter cylindrical portion 4D without being expanded in diameter. A branch pipe flange portion 13 </ b> C is formed at one end of the branch pipe 13 </ b> B in the axial direction so as to protrude outward in the radial direction.

The outer peripheral surface of the branch pipe flange portion 13C is in contact with the inner peripheral surface of the enlarged diameter cylindrical portion 4D in the radial direction. A gap is formed between a portion of the branch pipe 13B that is continuous with the branch pipe flange portion 13C in the axial direction and the inner peripheral surface of the enlarged diameter cylindrical portion 4D.
The fixing ring 14B is inserted into the gap and is in contact with the branch pipe flange portion 13C in the axial direction. The fixing ring 14B is in contact with the portion of the branch pipe 13B that is continuous with the branch pipe flange portion 13C in the axial direction in the radial direction.

The other end of the fixing ring 14B in the axial direction protrudes outward in the radial direction. A positioning hole 14A is formed in the outer peripheral surface of the fixing ring 14B. The positioning hole 14A is recessed toward the inside in the radial direction.
A through hole 4E that penetrates the outer peripheral surface in the radial direction is formed on the outer peripheral surface of the enlarged diameter cylindrical portion 4D.

A positioning pin 15 is inserted into the through hole 4E. The outer end portion in the radial direction of the positioning pin 15 is disposed so as to be flush with the outer peripheral surface of the enlarged diameter cylindrical portion 4D.
The positioning pin 15 is inserted into the positioning hole 14A of the fixing ring 14B. In this way, the circumferential and axial positions of the fixing ring 14B with respect to the branch pipe connecting portion 4 are fixed.

An accommodation recess 4F that is recessed in the axial direction is formed in a portion of the branch pipe connection portion 4 that is continuous with the enlarged diameter cylindrical portion 4D. The housing recess 4F extends over the entire area in the circumferential direction and is arranged coaxially with the central axis O.
An O-ring 16 is accommodated in the accommodating recess 4F. One end of the branch pipe 13B in the axial direction is in contact with the O-ring 16. Thereby, the liquid-tightness of the branch pipe 13B and the branch pipe connection part 4 is ensured.

As described above, according to the water faucet 100 in the present embodiment, the fixing ring 14B is positioned on the enlarged diameter cylindrical portion 4D by the positioning pin 15, so that it is possible to reliably prevent the fixing ring 14B from loosening. it can.
In addition, since the branch pipe connecting portion 4 and the branch pipe 13B are connected via the O-ring 16, liquid tightness between the branch pipe connecting portion 4 and the branch pipe 13B can be ensured with a simple configuration. Can do.

  The technical scope of the present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.

  For example, in the said embodiment, although the water tap 100 showed the structure provided with the upper clamp part and the lower clamp part, it is not restricted to such an aspect. The water faucet 100 may not include an upper clamp part and a lower clamp part. In such a case, the saddle portion may be connected to the main pipe by electric welding.

  Moreover, in this embodiment, although the water tap 100 showed the structure provided with the fixing ring 14, it is not restricted to such an aspect. The water faucet 100 may not include the fixing ring 14.

  In addition, it is possible to appropriately replace the constituent elements in the embodiment with known constituent elements without departing from the spirit of the present invention, and the above-described modified examples may be appropriately combined.

P Main pipe 2 Saddle part 3 Branch tube part 4 Branch pipe connection part 14 Fixing ring 100, 100B, 100C

Claims (2)

A saddle mounted on the main,
A branch cylinder portion standing on the saddle portion;
A branch pipe connection provided in the branch cylinder and extending in a direction intersecting with the branch cylinder;
And a branch pipe made of polyolefin resin fitted to the branch pipe connecting portion.   2. The water faucet according to claim 1, further comprising a fixing ring that contacts the branch pipe in a radial direction or an axial direction and fixes the branch pipe to the branch pipe connecting portion.

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