JPH0560283A - Piping part for sprinkler - Google Patents

Abstract

PURPOSE:To save the labor of constructing a winding pipeline such as a pipeline for sprinkler. CONSTITUTION:A flexible pipe 1 connecting a branched pipe 8 separated from a main pipe 81 and having a length at least from the branched pipe 8 to a sprinkler 7, a cheese connected and fixed to one end of the flexible pipe 1 to be connected to the branched pipe 8, and an adaptor 12 connected and fixed to the other end of the flexible pipe 1 to which adaptor the sprinkler 7 is connected are provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sprinkler piping component used for unwinding piping of a sprinkler.

[0002]

2. Description of the Related Art As shown in FIG. 8, a sprinkler pipe is divided into a main pipe 81 and a branch pipe 8 on each floor, and the branch pipe 8 is wound with cheese (Tee: tea or teas) 41 or the like. The delivery pipe N is branched and a sprinkler 71 is attached to the tip of the delivery pipe N.
The unwinding pipe N has 2 to 4 elbows (for example, 2 to 4 elbows) per one position of the unwinding pipe N for the centering work to bring the reducer pipe 111 for attaching the sprinkler to the attachment position of the sprinkler. , 110a and 110b in FIG. 8) is used, and the reducer pipe 111 is brought to the sprinkler mounting portion by a piping work called an elbow return.

Therefore, in this unwinding piping work,
Skilled workers are required, and in the industry, skilled workers called unwinding plumbers perform this piping.

[0004]

In recent years, the number of sprinklers installed has greatly increased, but on the other hand, lack of skilled workers, aging, and complexity of unwinding pipes [cutting of short pipes,
For thread cutting, connection with elbow, centering, and retightening (work such as climbing on the stepladder with a pipe wrench to prevent water from leaking). There was a problem that workability was low.

Among the above-mentioned operations, if the preparation work for pipe installation such as dimensioning for pipes, cutting of short pipes, and thread cutting can be omitted or the connection work can be simplified, work efficiency can be greatly improved. Contribute. In view of the above-mentioned circumstances, it is an object of the present invention to provide a sprinkler piping component capable of reducing the labor of the unwinding pipe (providing the labor saving).

[0006]

In order to solve the above-mentioned problems, the present invention provides a sprinkler piping component for connecting between a branch pipe separated from a main pipe and a sprinkler,
A flexible pipe having a length from at least the branch pipe to a sprinkler, cheese fixedly connected to one end of the flexible pipe so as to be connected to the branch pipe, and connected to the other end of the flexible pipe. Provided is a piping component for a sprinkler, which includes an adapter which is fixed and is adapted to be connected to the sprinkler.

In the present invention, the connection of the cheese to the flexible pipe and the connection of the adapter to the flexible pipe are respectively performed on the inner tapered surface of the cap nut having the tip end of the flexible pipe inserted and the cap nut. This can be done by sandwiching the inserted cheese and the outer tapered surface of each end of the adapter and the tip of the flexible tube to fix it in a watertight manner.

[0008]

Since the cheese and the adapter are connected to each other by the flexible pipe as a part, the cheese can be easily connected by connecting the sprinkler to the tip of the adapter.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the drawings showing the embodiments thereof. However, this invention
The present invention is not limited to the examples below. FIG. 1 shows an embodiment in which piping from the branch pipe to the sprinkler is performed by using the sprinkler piping component of the present invention (FIG. 1).
8A is shown side by side for comparison with the case where piping is performed using the conventional elbow shown in FIG. 8 (B in FIG. 1). As shown in FIG. 1A, FIG. 2 and FIG. 3, the sprinkler piping component of the present invention uses the cheese 4 to branch the unwinding pipe from the main pipe 81 to the branch pipe 8 divided into each floor, and the unwinding pipe. The sprinkler 7 is attached to the tip of the. Here, the unwinding pipe is made using a flexible pipe (flexible pipe) 1. The flexible tube 1 is connected to the cheese 4 via a connecting cap nut 11 attached to one end of the flexible pipe 1, and a sprinkler via an adapter 12 connected to the connecting cap nut 11 attached to the other end. Connected to 7. Adapter 1
2 is, for example, a sprinkler connecting fitting.

The cheese 4 to the adapter 12 can be assembled and shipped in a factory, and by doing so, a product with good performance can be stably manufactured (with little variation in quality). FIG. 4 shows the cheese 4 above.
Are enlarged, A is a front view, B is a side view, and C is its I.
-I sectional drawing, D is a bottom view.

As shown in FIG. 4, the cheese 4 has a T-shape as a whole, and both T-shaped wings have a tubular portion 41 for inserting and connecting a branch pipe and a T-shaped leg. The portion is a tubular portion 42 that serves as a branch connection portion to the unwinding pipe. The cylindrical portion 42 on the side of the unwinding pipe has a screw 42a for connecting to the flexible pipe for the unwinding pipe on the outer peripheral surface thereof, and a metal that is in direct metal surface contact with the flexible pipe at the tip thereof. Taper part 42 that gives a packing effect by touch
b. 41a is a tapered screw for connecting a branch pipe.

The sprinkler pipe of the present invention has a great feature of using a flexible pipe. This flexible pipe and cheese connection is not preferable because it requires a long life as a sprinkler pipe, and welding is not preferable because it adversely affects the metal structure. The formula is preferred. A of FIG. 3 is the same as A of FIG.

As shown in FIG. 3B, one end of the flexible pipe 1 is a straight pipe portion 1a, and the straight pipe portion 1a is inserted into the cap nut 11. Cap nut (flare nut) 11
Is formed in a ring shape, the inner diameter of which is slightly larger than the outer diameter of the connecting portion of the cheese 4 or the adapter 12 at one end side thereof, and the flare portion 11b is formed at the other end side thereof and faces outward. And has a tapered surface 11c whose inner diameter gradually decreases. Inside the nut 11, the tip of the flexible tube 1 is spread in a trumpet shape or a brim shape (see FIG. 3).
C), the tapered surface 11c that is the metal surface contact portion of the nut 11 and the tapered surface 4 that is the metal surface contact portion provided at the tip of the branch connection portion of the cheese 4.
It is a structure to prevent water leakage by sandwiching it with 2b.

As shown in FIGS. 3A and 3B, cheese 4
The metal touch effect is provided by the tightening force by the screw fitting between the male screw 42a of the tip of the connecting portion and the female screw 11a of the cap nut 11. As shown in FIG. 3D, the other end of the flexible tube 1 has the same size and shape, and the cap nut 11 is attached in the same manner as the attaching structure shown in FIG. 3B. A sprinkler connecting fitting 12, which is an adapter to which the sprinkler is connected, is screwed into the cap nut 11.

As shown in FIG. 3E, the sprinkler connecting fitting 12 is formed in a tubular shape, and the shape of the tip on one end side thereof is the same as the tip of the branch connecting portion of the cheese 4, Flexible tube 1 by screwed connection with cap nut 11
And can be connected to the metal touch type. That is, one end of the sprinkler connecting fitting 12 has a male screw 12a for connecting to a flexible pipe for unwinding piping on the outer peripheral surface, and a metal touch for making a metal surface contact with the flexible pipe directly at the tip thereof. It has a taper portion 12b having a packing effect according to the formula. At the other end of the sprinkler connecting fitting 12, the inner diameter is gradually reduced to form a portion having an inner diameter slightly larger than the outer diameter of the sprinkler head. The inner peripheral surface of this portion corresponds to the external thread of the sprinkler head outer peripheral surface. A female screw 12c is provided.

Piping using the sprinkler piping component of the present invention is as follows, for example. (1) The cheese 4 of the piping component of the present invention is attached to the branch pipe 8. (2) The flexible tube 1 is connected to the cheese 4, and the cap nut 11 at the tip of the flexible tube 1 is screwed into the male thread 42a of the cheese. After screwing in to the end, tighten it again to enhance the metal touch effect. When the cheese 4 and the flexible tube 1 are firmly assembled at the factory and shipped, the assembly at the construction site becomes unnecessary. (3) The tip of the sprinkler connection fitting 12 on the sprinkler connection side is fixed to the position of the sprinkler head 7a.

Sprinkler fitting 12 and flexible tube 1
No need to be assembled at the construction site because the and are shipped firmly assembled in the factory. An example of this mounting method is shown in FIG. 7 (described later). (4) The sprinkler head 7a is screwed into the female screw 12c of the sprinkler connecting fitting to complete the process.

In some cases, it may be better to perform the work (4) before the work (2). The material of the flexible tube is, for example, but not limited to, a stainless steel tube or a copper tube. The flexible tube 1 shown in FIG. 3 is made of stainless steel. Since the flexible tube made of stainless steel has a small plate thickness, the blade 3 is covered on the outer side of the flexible tube 1,
Prevents the pipe from stretching due to water pressure and increases pressure resistance. The blade 3 is fixed by fixing the straight pipe portions 1 at both ends of the flexible pipe 1.
a, the blade 3 is caulked and fixed on the outside of the cap nut 11 by the ring 5 so as not to come apart.

When the flexible pipe is a copper pipe, the thickness thereof is thicker than that of the stainless pipe, so that the blade is not covered and the copper pipe is often used as it is. Even in the case of a copper pipe, it is good to flare both ends and make it a metal touch waterproof structure. Each of the male threads 42a and 12a of the cheese 4 and the sprinkler connecting fitting 12, which are screwed into the cap nut 11,
In addition, a resin screw locking agent (sealant) 6 is applied to the tapered surfaces (portions in surface contact with the flared portion of the flexible tube) 42b and 12b at each tip. As the sealant 6, for example, one that also has a waterproof effect is used.

FIG. 5 shows an example of a sprinkler connecting fitting, where A is a side sectional view and B is an end view. This sprinkler connection fitting 12 is a straight tube, and at one end side,
It has a portion having an outer diameter slightly larger than the inner diameter of the cap nut 11 attached to the flexible pipe and a screw thread 12a on the outer peripheral surface and a tapered taper surface 12b at its tip, and the inner diameter at the other end. Is gradually squeezed to have an inner diameter slightly larger than the outer diameter of the sprinkler head 7a, and an internal thread 12c corresponding to the external thread of the sprinkler head outer peripheral surface is formed on the inner peripheral surface of this portion.

FIG. 6 shows another sprinkler connecting fitting.
An example is shown, A is a side sectional view, and B is an end view. Shown in FIG. 6 is a 45 ° elbow sprinkler fitting 120. 6, those parts that are the same as those corresponding parts in FIG. 5 are designated by the same reference numerals, and a description thereof will be omitted. In addition, a 90 ° elbow sprinkler connection fitting or the like can be set. FIG. 7 shows an example of mounting the sprinkler pipe fitting of the present invention to the ceiling material of the sprinkler connecting fitting 12. As shown in FIG. 7, the sprinkler connecting fitting 12 connected and fixed to one end of the flexible pipe 1 is attached to the U-shaped bar 22 passed between the C-shaped steel materials 21 by the one-touch fixing fitting 24. The fixing metal fitting 24 has a U-shaped side surface, and through-holes are formed at both tip sides so that the connecting metal fitting 12 can be inserted therein, and a screw 24a is screwed into the central side from the outside. There is. With the connection fitting 12 inserted in the through hole, the connection fitting 12 and the screw 24a sandwich the U-shaped bar 22, and the screw 24a is screwed and fixed. The U-shaped bar 22 is a U-shaped bar fixing bracket 23.
And is fixed to the C-shaped steel material 21. This U-shaped bar fixing member 23 has a side wall U-shape, and a through hole for inserting the U-shaped bar 22 is formed in the center side, and a screw 23a is screwed into one tip side from the outside. It is supposed to be. The other tip side is hooked on one tip side of the C-shaped steel material, and the U-shaped bar 2 is inserted in this through hole.
2 is inserted, screw in screw 23a, and screw 23a
C-shaped steel and U-shaped bar 22 at the other end of the metal fitting 23
To fix it.

[0022]

As described above, according to the present invention, as long as cheese having the above-mentioned function is connected to a branch pipe by a conventional method, unwinding piping which is troublesome can be easily performed, and work efficiency is improved. Can be greatly improved. In the conventional construction method,
When using 3 elbows for unwinding pipe, prepare 4 short pipes, cut 8 screws, apply sealant to 8 screws, and climb on the stepladder to pipe. I used a wrench to do the plumbing work, but that work is no longer necessary.

When cutting the short pipe, the pipe was sized and cut while drawing an image of how to connect the cheese to the sprinkler attachment part. However, if a flexible pipe is used, they will be cut. It becomes unnecessary. Since it is not necessary to cut a short pipe or to cut a screw, it is not necessary to move up and down a stepladder or move to a screw cutting machine, which reduces physical fatigue.

Since thread cutting is limited to only branch pipes, a cutting machine and a thread cutting machine are not required on the day of unwinding piping, and the accompanying work of cleaning around the machine after the work is finished because the floor is dirty. Will be reduced. Since the skill of unwinding piping work becomes low, even an inexperienced worker can work under the supervision of a skilled worker, it becomes easy to secure manpower, and the construction period can be shortened.

When the waterproof structure is a metal touch, a high water pressure (for example, 17.5) for a long period of time equivalent to the life of the building is obtained.
High reliability for waterproof life of kg / cm ² ). By applying the sealing agent to the male thread portion, the following effects (1) to (3) can be achieved. Prevents loosening of screws due to vibration etc. due to long-term use.

The waterproof effect is enhanced. Since the flexible tube and the cheese or sprinkler fitting are dissimilar metals, they may cause battery corrosion under the right conditions. For this reason, since the thin film is formed by applying the resin sealing agent in advance, it is possible to prevent direct contact and prevent occurrence of battery action corrosion.

[Brief description of drawings]

FIG. 1 is a partially exploded perspective view showing a sprinkler piping component of the present invention side by side with a conventional sprinkler piping for comparison.

FIG. 2 is a partial cross-sectional side view showing the entire sprinkler piping component of the present invention.

FIG. 3 is an exploded view showing members constituting the sprinkler piping component of the present invention.

FIG. 4 shows cheese used in the sprinkler piping component of the present invention, where A is a front view, B is a side view, C is a sectional view taken along line I-I, and D is a bottom view.

FIG. 5 shows a sprinkler connecting fitting used for a sprinkler piping component of the present invention, in which A is a side sectional view and B is an end view.

FIG. 6 shows another sprinkler connection fitting used for the sprinkler piping component of the present invention, in which A is a side sectional view,
B is an end view.

FIG. 7 is an explanatory diagram of a case where the sprinkler piping component of the present invention is attached to a ceiling material.

FIG. 8 is an explanatory view showing a conventional sprinkler pipe.

[Explanation of symbols]

 1 Flexible pipe 4 Cheese 7 Sprinkler 8 Branch pipe 11 Cap nut 12 Sprinkler connection fitting 81 Main pipe

Claims (2)

[Claims] 1. A piping component for a sprinkler connecting a branch pipe separated from a main pipe and a sprinkler, the flexible pipe having at least a length from the branch pipe to the sprinkler, and connected to one end of the flexible pipe. A sprinkler, characterized in that it comprises a cheese that is fixed and adapted to be connected to the branch pipe, and an adapter that is fixedly connected to the other end of the flexible pipe so that the sprinkler is connected. Piping parts for. 2. The cheese inserted into the cap nut and the inner tapered surface of the cap nut into which the tip of the flexible pipe is inserted are connected to the flexible pipe of cheese and the flexible pipe of the adapter. The pipe component for a sprinkler according to claim 1, wherein the flexible pipe is watertightly fixed by sandwiching the tip end of the flexible pipe with the outer tapered surface of each end of the adapter.