JP2015197182A - Branch joint - Google Patents

Abstract

PROBLEM TO BE SOLVED: To solve a problem that the prior art three-way branch joint set to be branched at an intermediate position of a water plumbing is basically applied as a fixed T-shaped joint and so it cannot be adapted for a branch arrangement for a terminal unit, such as a sprinkler, under an environment of piping present in an orientation where a primary connection port and the secondary connection port are not oppositely arranged, in particular where they are present at positions in which a step in a vertical direction is present.SOLUTION: Two elbow type joint bodies 2, 2 in which one end is applied as a connecting joint port 21 and the other end is applied as a main body fitting base part 22 are fitted in a water-tight and rotatable manner at fitting holes 3, 3 opened and formed at both upper end side surfaces of a joint barrel main body 1, and at the same time a terminal unit fixing mechanism 4 is arranged at the bottom part of the joint barrel main body 1 so as to constitute a branch joint.

Description

  The present invention is used when a terminal device such as a sprinkler head or a diversion channel is set at an intermediate position between water pipes arranged in different directions, where the primary terminal and the secondary terminal of the water pipe are not in a straight line position. The present invention relates to a branch joint to be used, and particularly relates to a branch joint effective when a sprinkler head or the like is installed in a ceiling of a new building with a resin pipe.

  Unlike commercial buildings that are specially equipped with water supply circuits such as water storage tanks and water pumps as water supply circuits for sprinklers, when installing sprinklers in ordinary houses, apartments, condominiums, etc., there is no special water supply circuit and water supply Since it is permitted to branch off from the water pipe, it has been practiced to arrange a sprinkler at an intermediate position of the water pipe.

  On the other hand, with regard to the setting position of the pipe section intermediate equipment such as the tap water intake sprinkler head, the primary side connection port and the secondary side connection port of the water pipe are arranged at straight positions on both sides of the branch joint. In addition, in a piping environment in which the primary side connection port and the secondary side connection port are not provided, branch arrangement of a terminal device such as a sprinkler is difficult depending on a fixed T-type joint.

  In addition, piping in the back of the ceiling is not supported by earth and sand like underground piping, so it becomes air piping, and stable piping is used unless beam materials etc. are used as support and fixing materials I can't. Furthermore, there are many cases in which the line that is to be piped as a water pipe in the ceiling and the location where the sprinkler head is placed in each room are largely separated, and the construction site where the piping line and the sprinkler head are installed may be separated in distance. Many.

  Conventionally, in general sprinkler equipment for homes, a T-type joint is connected in the middle of a water supply pipe branched from a water supply equipment as in Patent Document 1, and a sprinkler head is connected to a branch pipe portion of the T-type joint. . However, when a sprinkler is disposed at an intermediate position of the water supply pipe, stagnant water (dead water) is generated in the portion, and the stagnant water is mixed in the water supply pipe, which is unfavorable for hygiene.

  In order to prevent dead water in the branch joint for such tap water intake sprinkler heads, a partition wall is provided in the T-shaped joint, and water is forced to flow into the branch pipe part in normal times, and the water in the branch pipe part flows. A measure such as Patent Document 2 for preventing the generation of dead water and a countermeasure such as Patent Document 3 in which the inner diameter of the water inlet connected to the T-shaped branch pipe portion is a vortex chamber having a cross-sectional area larger than the cross-sectional area of the water outlet. Has also been taken.

  In addition, a ring-shaped joint body, and a hollow with a sprinkler head mounting opening eccentrically provided at the lower part of the joint body, are suitable for piping environments where the primary side connection port and the secondary side connection port are not provided. There has also been a proposal as disclosed in Patent Document 4 in which the rotating body is rotatably fitted so that the mounting position of the sprinkler head can be adjusted in the rotation range of the hollow rotating body.

When the primary side and the secondary side end of the water pipe are close to each other, the pipe in the ceiling is a U-shaped pipe with the installation portion of the sprinkler head as the bottom, and it is necessary to deal with the pipe by bending it.
Hard pipes such as steel pipes require separate joints such as elbows, and even soft pipes such as resin pipes cause breakage of the pipes, causing problems such as a decrease in water flow rate and damage to the pipes.

Corresponding to this problem, Patent Document 5 by the applicant of the present application proposes a three-way joint in which both elbows in two upper parts other than the sprinkler head connection part freely rotate, and the basic joint is fixed by the direction of the beam in the ceiling. Even if the direction is limited, the water pipe can be connected without being affected.
Japanese Utility Model Publication No. 54-5399 JP 2011-30865 A JP-A-2-239878 Utility Model Registration No. 2567707 JP 2013-2610 A

The conventional three-way joints that branch off to the middle position of the water supply pipe have been devised as described above, but all are based on fixed T-type joints. In a piping environment where the secondary side connection port is not oppositely arranged, it cannot cope with branch arrangement of terminal equipment such as a sprinkler.

  That is, when setting a sprinkler in the middle of a water supply pipe branched from a water supply facility without providing a special water supply circuit, in the ceiling, which is the pipe space of the sprinkler head, `` a place where the sprinkler head is to be placed, such as the center of each room '' It does not necessarily coincide with the “line to be piped as a water pipe”, and the primary side connection port and the secondary side connection port of the branch joint are often forced to have different orientations.

  In response to the above-mentioned problems of the conventional three-way joint, the applicant proposed a three-way joint in which both elbows in the upper two places rotate freely in the horizontal direction, and the fixing direction of the basic joint depends on the direction of the beam in the ceiling. Although the proposal is made in Patent Document 5 so that the water pipe can be piped without being affected even if it is limited, since the rotation of both elbows is limited to the horizontal direction, it corresponds to the vertical direction. There was a problem that could not be done.

  In other words, pipes in the ceiling can be hung from hard pipes such as steel pipes, but cannot be hung from soft pipes such as resin pipes, so they must be fixed to the top surface (uppermost ceiling) of the ceiling. Absent. Therefore, since a considerable level difference is generated in the vertical direction up to the sprinkler head piping, when a conventional T-shaped joint is used, it is necessary to bend the resin tube greatly in order to connect it to the piping, and the construction is difficult. It will continue to do load damage to the resin pipe.

  In addition to T-shaped joints, there are also Y-shaped joints. However, bending of resin pipes is unavoidable, and the piping to the secondary side is inevitably upward. The resin pipe will be bent again for piping.

  In addition, the piping on the back of the ceiling is not supported by earth and sand like underground piping, so it becomes air piping, and the piping is connected to the joint port of the branch joint by screwing etc. in a narrow space A lot of time and skilled labor are required for the work to be performed, and there is a problem that leads to water leakage etc. if it is not yet matured.

  The present invention is intended to address the above-described problems, and has two elbow types in which one end is connected to a joint hole and the other end is a main body fitting base in fitting holes formed on both sides of the upper end of the joint body. The joint body is rotatably fitted in a watertight manner, and a terminal device mounting portion such as a sprinkler head is provided on the bottom surface of the main body so as to be freely positioned in the vertical direction.

  In addition, by disposing the lock ring in the connection pipe insertion port so that the V-shaped opening faces the deep side of the connection joint port, the connection pipe port of the elbow joint body is prevented from being detached. As a one-touch joint structure, the work of connecting the pipe to the joint port of the branch joint can be performed by a simple connecting pipe insertion work.

  Since the present invention is configured as described above, a plurality of joints such as elbows according to the orientations of the primary side connection port and the secondary side connection port as in a conventional T-shaped joint having a fixed shape like cheese. Since there is no need to adjust the orientation by combining the two, it is possible to design a more flexible piping system for selecting the vertical direction, that is, the vertical position, and to connect the pipe to the joint port of the branch joint. Since it can be done with one touch, the work efficiency has been dramatically improved.

  In addition, since the two elbow joints are formed to be rotatable on both sides, even when the primary side and the secondary side end of the water pipe are close to each other and the U-shaped pipe with the bottom of the joint body body as the bottom is used. The elbow-type joint body forms curved channels on the primary and secondary sides to prevent loss of water supply energy, while the U-shaped pipe is suddenly bent with respect to the terminal device mounting mechanism provided on the bottom surface of the main body. It is formed without difficulty and prevents the occurrence of dead water in the device mounting mechanism.

  Also, even in a piping environment where the primary side connection port and the secondary side connection port are not arranged in a straight line, branch piping is possible, so it is possible to set up intermediate equipment such as sprinklers and various types There is an effect that piping construction corresponding to a free design can be performed without preparing joints of various shapes.

The embodiment of the present invention shows a vertical cross-sectional side view and a trunk of a branch joint showing a structure in which an elbow-type joint body is pivotally watertightly fitted into fitting holes formed on both sides of the upper end of the joint body. Bottom view of the figure showing the internal structure Similarly, a plan view in which the elbow-type joint body and the joint body main body upper end portion in a state where the elbow-type joint body is rotated are cross-sectional views. Similarly, a construction situation diagram of the construction part in the ceiling showing a construction example in which a sprinkler is installed by piping using a branch joint according to the present invention in the ceiling Similarly, a construction situation diagram showing a construction example in which a plurality of sprinklers are installed in a vertical space using the branch joint according to the present invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Reference numeral 1 denotes a joint body, on both side surfaces of the upper end, fitting holes 3 and 3 are formed so that two elbow joint bodies 2a and 2b can be pivotally fitted in a watertight manner. A device mounting mechanism 41 is provided.

  The elbow-type joint bodies 2a and 2b are respectively configured as a body fitting base portion 22 that fits one end to the connection joint port 21 and the other end to the fitting holes 3 and 3 of the joint body 1 and the body fitting base portion 22. Is inserted into the fitting hole 3 and is pivotally fitted to the fitting hole 3 of the joint body 1 by the thrust ring 23, and watertightness is maintained by the O-ring 24.

The connection joint port 21 is formed so that the V-shaped opening 13 is directed to the deep side of the connection joint port at the opening for inserting the end portions of the pipes 11 and 12 constituted by resin pipes, and a cap 21a is formed at the top. When it is covered and inserted into the insertion port 25 of the connection joint port 21, the retaining piece 26 of the retaining ring bites into the outer peripheral surface of the insertion pipe, and is constructed in a one-touch joint structure that cannot be removed in the removal direction. The pipes 11 and 12 are connected by simply inserting them.
Of course, the structure of the connection joint port 21 may be a normal connection structure instead of the one-touch structure. This one-touch is applied when the pipes 11 and 12 are made of resin pipes. When the pipes 11 and 12 are metal pipes, the connection joint port 21 has a normal pipe connection structure.

  As shown in FIG. 3, the branch joint configured as described above is a primary side descending from a pipe disposed on the uppermost ceiling to a branch joint fixed to the lower top plate H and beam G by the fixing bracket 5. The elbow type joint body 2a can be rotated with respect to the pipe 11 so that the connection joint port 21 can be directed in a reasonable direction.

Further, in relation to the other sprinklers 14 attached to the top plate H, the elbow type joint body 2b can be freely selected with respect to the elbow type joint body 2a of the side branch joint as shown in FIG. In addition, since the connection joint is simply inserted into the connection joint port 21 of the branch joint by simply inserting the end of the primary pipe 11, without excessive bending of the pipe due to the rotation of the elbow joint body, Free piping design can be performed.

Further, the tap water flowing in from the primary side pipe 11 passes over the terminal device mounting mechanism 41 of the joint body 1 by the elbow-shaped curved flow path of the elbow-type joint 2a, and the main body fitting of the elbow-type joint 2b. It flows into the base 22 and flows out from the elbow-type joint body 2b to the secondary side pipe 12. However, the vortex generated by the stay prevention body 1a set inside the joint body 1 causes the terminal equipment mounting mechanism 41 to enter the site. There is no stagnation of water flow and the generation of dead water is prevented.

  As shown in FIG. 1, the branch joint according to the present invention is a watertight fitting of elbow joint bodies 2 a and 2 b into fitting holes 3 and 3 of the joint body 1 so as to be pivotable. A branch water channel 4 is formed, which is used as a three-way joint for ordinary water supply pipes, so that the joining direction of water supply pipes can be freely adjusted. The elbow joint bodies 2a and 2b are connected to the primary side and the secondary side. Without being limited to the side, it can be widely used for the junction system piping as described above.

  The connection port turning branch joint according to the present invention basically changes the joint structure of a water pipe similar to a blood vessel in modern industry, and can freely set an arrangement site of a joint pipe. Since the free design range can be greatly expanded, the utility value in the water plumbing industry is extremely high.

DESCRIPTION OF SYMBOLS 1 Joint body 1a Retention prevention body 11 Primary side piping 12 Secondary side piping 13 V-shaped opening part 14 Sprinkler 2 Elbow type joint body 2a Primary side elbow type joint body 2b Secondary side elbow type joint body 21 Connection joint Port 21a Cap at the top of the one-touch structure 22 Main body fitting base 23 Thrust ring 24 O-ring 25 Joint pipe end insertion port 26 of connection joint port Retaining ring locking piece 3 Elbow joint fitting hole 4 Branch water channel 41 Terminal Device mounting mechanism 5 Fixing bracket G Support member H such as beam material Top plate

When the primary side and the secondary side end of the water pipe are close to each other, the pipe in the ceiling is a U-shaped pipe with the installation portion of the sprinkler head as the bottom, and it is necessary to deal with the pipe by bending it.
Hard pipes such as steel pipes require separate joints such as elbows , and even soft pipes such as resin pipes cause breakage of the pipes, leading to problems such as a decrease in water flow rate and damage to the pipes.

Corresponding to this problem, Patent Document 5 by the present applicant proposes a three-way joint in which both upper elbows other than the sprinkler head connection part rotate freely, and the basic joint is fixed by the direction of the beam in the ceiling. Even if the direction is limited, the water pipe can be connected without being affected.
Japanese Utility Model Publication No. 54-5399 JP 2011-30865 A JP-A-2-239878 Utility Model Registration No. 2567707 JP 2013-2610 A

In response to the above-mentioned problems of the conventional three-way joint, the applicant proposed a three-way joint in which both elbows in the upper two places rotate freely in the horizontal direction, and the fixing direction of the basic joint depends on the direction of the beam in the ceiling. Is limited, but the proposal of Patent Document 5 has been made so that the water pipe can be piped without being affected, but since the rotation of both elbows is limited to the horizontal direction, it corresponds to the vertical direction. There was a problem that could not be done.

Claims (2)

  Two elbow joints, one end of which is connected to the joint hole and the other end of the body fitting base, are fitted in the fitting holes formed on both sides of the upper end of the joint body. Branch joint with terminal equipment mounting  Connect the joint port of the elbow joint body with a V-shaped opening toward the deep side of the connection joint port at the opening where the end of the connection pipe is inserted, and cover the top with a cap. 2. A branch according to claim 1, wherein when the end of the pipe is inserted into the insertion port of the connection joint port, the retaining piece of the retaining ring bites into the outer peripheral surface of the insertion pipe and cannot be detached in the removal direction. Fitting

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