JPH0584321A - Connecting structure of sprinkler head and piping - Google Patents

Abstract

PURPOSE:To simplify the execution of piping in a job site by connecting a branch pipe to a sprinkler head through a flexible coupling, bending the flexible coupling to insert the sprinkler head in a hole of a fixing metallic material of a ceiling, and fixing the same with a pair of upper and lower nuts. CONSTITUTION:A fixing channel 4 (fixing metallic material) for fixing a sprinkler head 10 is laid between two adjacent supporting channels 2, 2 provided in the ceiling. A branch pipe 20 branching from a water supply piping is suspended from the ceiling. A bent pipe coupling 21 is integrally provided on the tip of the branch pipe 20, and a flexible pipe coupling 11 extended downward in the direction intersecting perpendicularly to the branch pipe 20 is engaged with the coupling 21. After the flexible pipe coupling 11 is bent, the forward end sprinkler head 10 is inserted in a hole 6 of the fixing channel 4 from above, and then upper and lower nuts 19a, 19b screw-engaged with the outer periphery of the forward end of a reducer 14 are tightened to clamp the fixing channel 4, whereby the sprinkler head 10 is fixed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sprinkler head and piping connection structure in a sprinkler facility.

[0002]

2. Description of the Related Art In general piping installation of sprinkler equipment, since there is a lot of connection with the joint of the ceiling board and other ceiling installation equipment, the sprinkler head is attached with a relatively high accuracy of about ± 10 mm. Outing is required. In addition, in order to accommodate other equipment in the ceiling, the unwinding pipe from the branch pipe to the sprinkler head, which is the end of the branch pipe, needs to be routed through an obstacle. For this reason, in addition to straight pipes, several curved pipe joints are used, the dimensions of the straight pipes are measured in advance, and the straight pipes and the curved pipe joints are threaded at the processing site, and then on-site piping is performed. There is a problem that it takes time.

[0003]

By the way, as the piping method of the conventional construction method as described above, other construction methods have been proposed to reduce the work by using a rotary joint made of stainless steel, flexible piping and the like. It was difficult to say that the above method can effectively solve the above problems.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a sprinkler head-pipe connecting structure which can simplify the pipe construction.

[0005]

Therefore, in the connection structure of the sprinkler head and the pipe of the present invention, the sprinkler head is connected to a branch pipe branched from the pipe of the ceiling through a bendable flexible pipe joint, and the ceiling is connected. In, install the fixed hardware that attaches the sprinkler head to the desired position,
The fixing hardware is provided with a hole for centering the sprinkler head by inserting the sprinkler head, and the tip of the flexible pipe joint is attached to the tip of the flexible pipe joint with the sprinkler head inserted in the hole. Equipped with a pair of upper and lower nuts for fixing to a fixed metal object is a means for solving the above problems.

A small hole for guiding the sprinkler head inserted through the hole to a fixed position is communicated with the hole, and the outer diameter of the lower nut is smaller than the hole diameter and the small hole diameter. It is desirable to set it larger than.

[0007]

In the present invention, the rear end of the flexible pipe joint having the sprinkler head attached to the front end is connected to the branch pipe, and the flexible pipe joint is bent to insert the sprinkler head into the hole of the fixed hardware attached to the ceiling. The sprinkler head can be attached at a predetermined position by fixing the distal end portion of the flexible pipe joint to the fixed metal object with a pair of upper and lower nuts. Therefore, the number of curved pipe joints to be used is reduced, and
Since it is not necessary to dimension the straight pipe in advance, piping work for the sprinkler head is simplified.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.
Will be described.

1 to 3 show a sprinkler head 1
0 shows the procedure of pipe construction. The procedure will be described below.

As shown in FIG. 1, a ceiling underlayer channel 1 is installed in parallel on the back of the ceiling, and a support channel 2 is installed on the ceiling underlayer channel 1 in a direction orthogonal to the ceiling underground channel 1, and both are fixed. It is fixed by the hardware 3.
Further, a fixing channel (fixed metal member) 4 for fixing the sprinkler head 10 is provided between the adjacent supporting channels 2 and 2 in parallel with the ceiling base channel 1, and both are fixed by the fixing metal member 5. A hole 6 for inserting the sprinkler head 10 and centering the sprinkler head 10 is vertically penetrated through the fixing channel 4. The fixing channel 4 is provided with a hole 6 in the sprinkler head 10.
It is attached so that it fits the core of.

As shown in FIG. 2, a branch pipe 20 that branches from a pipe for supplying water to the sprinkler head is suspended above the ceiling, and a bent pipe joint 21 is integrally formed at the tip of the branch pipe 20. It is provided. As shown in FIG. 2, one end of the flexible pipe joint 11 is screw-fitted and connected to the threaded portion 22 of the curved pipe joint 21 at a position orthogonal to the branch pipe 20.

As shown in FIG. 4, this flexible pipe joint 11 has a flexible portion 12 composed of a flexible tube 15 and a blade 16 on its surface, and a blade retainer 17 at one end of the flexible portion 12. Nipple 13 provided integrally via
And a reducer 14 integrally provided at the other end of the flexible portion 12 via a blade retainer 18. A screw is cut on the outer periphery of the tip of the nipple 13, and the nipple 13 is screwed into the threaded portion 22 of the curved pipe joint 21 for connection with a pipe wrench or the like. Further, a screw is cut on the outer periphery of the tip of the reducer 14, so that the sprinkler head 10 is screw-fitted and attached. This reducer 14
The outer periphery of the base end of is also threaded, and two nuts 19
a and 19b are attached. The nut 19a on the base end side is fixed to the reducer 14, and the nut 19b on the tip end side is free and can be rotated to move in the axial direction.

A flexible pipe joint 11 is attached to a curved pipe joint 21 of the branch pipe 20.
After connecting one end of the flexible pipe joint 1 as shown in FIG.
1 is bent, and the sprinkler head 10 at the tip is bent.
Is to be inserted into the hole 6 of the fixing channel 4 from above. The diameter of the hole 6 is set so that the lower nut 19b passes vertically with the sprinkler head 10. As shown in FIG. 5, a small hole 7 which is located in the longitudinal direction of the fixing channel 4 and which guides the sprinkler head 10 to the mounting position thereof communicates with this hole 6. The diameter of this small hole 7 is such that the nuts 19a, 19
It is set smaller than the outer diameter of b. Further, the width of the narrow portion 8 between the hole 6 and the small hole 7 is larger than at least the base end of the reducer 14 or the outer diameter of the screw portion of the sprinkler head 10 screwed into the reducer 14. It is set.

When the sprinkler head 10 inserted into the hole 6 is guided to the small hole 7 and attached at a predetermined position, the procedure shown in FIGS. First, as shown in FIGS. 5 and 6, the sprinkler head 10 is inserted into the hole 6 and the lower nut 19b is passed through. And FIG.
As shown in FIG. 8, the lower nut 19b is loosened and put on the sprinkler head 10, and the narrow portion of the reducer 14 is used to shift the nut 19b to the small hole 7, as shown in FIG.
From this state, the reducer 14 is inserted downward until the upper fixing nut 19a hits as shown in FIG. 9, and the lower nut 19b is tightened to fix the fixing channel 4 together with the upper fixing nut 19a as shown in FIG. It is sandwiched and fixed, and the reducer 14 is fixed to the fixing channel 4. As a result, the sprinkler head 10 is mounted at a desired position, and even if the nut is loosened for a long period of time, the sprinkler head 10 is maintained in a state in which the sprinkler head 10 never laterally slips out.

According to this embodiment, the following effects can be obtained. (A) The flexible pipe joint 11 is manufactured in a factory, and the sprinkler head 10 is attached to the flexible pipe joint 11 in advance at the processing site so that the flexible pipe joint 11 can be attached to the curved pipe joint 22 of the branch pipe 21 in the field construction. While connecting only one end of the sprinkler head 10 and fixing the sprinkler head 10 at the other end by inserting the sprinkler head 10 into the hole 6 of the fixing channel 4 and fixing the sprinkler head 10, the precise centering work of the sprinkler head 10 becomes unnecessary.
Since the sprinkler head 10 and the branch pipe 20 can be easily connected and the straight pipe is not required to be dimensioned, the process can be omitted and the construction period can be shortened.

(B) Since the flexible pipe joint 11 can be freely bent and used, it has a high flexibility as a pipe joint, and the number of curved pipe joints conventionally required for connecting straight pipes is reduced to make a connection. The work can be omitted, and the places that cause water leakage can be reduced to improve the quality of the sprinkler equipment. Further, since the number of repaired parts is reduced, it is possible to reduce the maintenance cost after construction.

[0017]

As described above, according to the present invention,
The branch pipe and the sprinkler head are connected via a bendable flexible pipe joint, the flexible pipe joint is bent and the sprinkler head is inserted into the hole of a fixed metal object attached to the ceiling, and the flexible pipe joint is connected by a pair of upper and lower nuts. The sprinkler head can be easily attached at a predetermined position by fixing the tip of the to the fixed metal object. Therefore, on-site piping construction of the sprinkler head can be simplified, the construction process can be omitted, and the construction period can be shortened. In addition, since the number of curved pipe joints to be used is reduced, the number of locations causing water leakage is reduced, the quality of sprinkler equipment is improved, and maintenance after construction is facilitated.

[Brief description of drawings]

FIG. 1 is a diagram showing a procedure of piping construction of a sprinkler head.

FIG. 2 is a view showing a procedure of piping construction of the sprinkler head.

FIG. 3 is a diagram showing a procedure of piping construction of the sprinkler head.

FIG. 4 is an overall view of a flexible pipe joint.

FIG. 5 is a diagram showing a procedure for fixing the tip of the flexible pipe joint to a fixed metal object.

FIG. 6 is a diagram showing a procedure for fixing the tip of the flexible pipe joint to a fixed metal object.

FIG. 7 is a diagram showing a procedure for fixing the tip of the flexible pipe joint to a fixed metal object.

FIG. 8 is a diagram showing a procedure for fixing the tip of the flexible pipe joint to a fixed metal object.

FIG. 9 is a diagram showing a procedure for fixing the tip of the flexible pipe joint to a fixed metal object.

FIG. 10 is a diagram showing a procedure for fixing the tip of the flexible pipe joint to a fixed metal object.

[Explanation of symbols]

 4 Fixed Hardware 6 Hole 7 Small Hole 10 Sprinkler Head 11 Flexible Pipe Joint 19a Nut 19b Nut 20 Branch Pipe

Front page continuation (72) Inventor Masao Obata 1-3-2 Shibaura, Minato-ku, Tokyo Shimizu Construction Co., Ltd.

Claims (2)

[Claims] 1. A sprinkler head is connected to a branch pipe branched from a pipe of a ceiling via a bendable flexible pipe joint, and a fixed metal object for mounting the sprinkler head at a desired position is installed on the ceiling. The fixed hardware is provided with a hole for centering the sprinkler head by inserting the sprinkler head, and the tip of the flexible pipe joint is attached to the tip of the flexible pipe joint while the sprinkler head is inserted in the hole. A sprinkler head and piping connection structure, which is equipped with a pair of upper and lower nuts for fixing to a fixed metal object. 2. A small hole for guiding a sprinkler head inserted into the hole to a mounting position communicates with the hole, and an outer diameter of the lower nut is smaller than a diameter of the hole and a diameter of the small hole. The connection structure of the sprinkler head and the pipe is characterized in that it is set larger than.