JPH11178945A - Sprinkler head mounting pipe and sprinkler piping system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To connect a sprinkler head to the secondary end part of a piping for a sprinkler to enable the sprinkler head to be easily set in a suitable position and posture. SOLUTION: A sprinkler head mounting pipe l to connect the secondary end part of piping 50 for sprinkler to a sprinkler head 60 is constituted as follows: A joint 3 is fit on the outside of the primary side of a metal flexible pipe whose intermediate part is made a corrugate part 2a, a primary ring groove 3a is formed on the inside periphery of the inner end part thereof, and a male screw part capable of screwing together with a female screw part 56a of a box nut 56, which is a pipe joint in the secondary side of the piping 50 for sprinkler is formed on the outside periphery of the outer end part. A socket 5 with a female screw part 5a to be screwed together with the sprinkler head 61 is fixed to the secondary end part of the metal flexible pipe 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sprinkler head mounting pipe for mounting a sprinkler head to a secondary end of a sprinkler pipe, and a sprinkler piping system comprising a combination thereof.

[0002]

2. Description of the Related Art As an example of a sprinkler pipe, a pipe 50 having a structure shown in FIG. 6 is known. This pipe 50
In this case, the steel pipe 51 is connected to the primary pipe 57 by being screwed into one of the female threads of, for example, a pipe joint 58 connected to the primary pipe 57 at the upstream end, that is, the primary end. In a middle part of the pipe 50, the pipe is connected to a mounting position of the sprinkler head 61 by a combination of a straight pipe type steel pipe 51 and an elbow 59. And the above piping 5
One end of an elbow 59 is screwed into a male screw portion at the downstream end, that is, the secondary end of the steel pipe 51, and the other end of the elbow 59 is screwed with one end of a straight-tube sprinkler head mounting tube 60. The sprinkler head 61 is screwed to the other end of the sprinkler head mounting tube 60.

[0003]

The sprinkler pipe 50 having the above structure is connected to the sprinkler head 61 at a position where the sprinkler head 61 is mounted by a combination of a straight pipe type steel pipe 51 and an elbow 59. Straight sprinkler head mounting pipe 6
It is attached by screwing to 0. Therefore,
In the pipe 50, the sprinkler head 61 must be accurately piped to its mounting position by a combination of a straight pipe-type steel pipe 51 and an elbow 59, which requires a long working time and labor, and has a skillful skill. Was necessary. Nevertheless, there is a case where the sprinkler head 61 cannot be set to the required position and the vertical position correctly, and in this case, it is very difficult to adjust the sprinkler head 61 to the required position and the vertical position to perform piping work. There is a problem that becomes.

The present invention has been made to solve the above problems, and provides a sprinkler head mounting pipe and a sprinkler piping system capable of easily setting a sprinkler head to a suitable position and posture in sprinkler piping construction using sprinkler piping. The purpose is to:

[0005]

According to a first aspect of the present invention, a sprinkler head mounting pipe is provided between a secondary end of a sprinkler pipe and a sprinkler head to connect the sprinkler head to the pipe. A sprinkler head mounting tube, which is a metal flexible tube having a corrugated portion at an intermediate portion in the tube axis direction, and is externally fitted to a primary side end portion of the metal flexible tube, and has an annular groove at an inner end inner periphery. A joint body formed at the outer end thereof and having a threaded portion capable of being screwed to the pipe joint of the pipe, and held by a retaining structure so as not to come off from the metal flexible tube; A socket fixed to the secondary end of the flexible tube and having a threaded portion that can be screwed into the sprinkler head. According to this configuration, the sprinkler pipe cannot be sufficiently bent in the required direction,
Even if the pipe cannot be properly arranged in the desired direction and position, or the sprinkler head cannot be installed in a suitable vertical position, bend the metal flexible pipe of the sprinkler head mounting pipe at the corrugated section around the pipe axis of the pipe. Thereby, the sprinkler head can be easily adjusted to a suitable position and a vertical position.

A sprinkler head mounting pipe according to a second aspect of the present invention includes a sprinkler pipe having a secondary end portion,
A sprinkler head mounting pipe interposed between the sprinkler head and the sprinkler head to connect to the pipe, the metal flexible pipe having a corrugated portion at an intermediate portion in the pipe axis direction, and the metal flexible pipe An annular groove formed on the inner periphery of the inner end and the outer periphery of the outer end of the metal flexible tube. The outer end is rotatably fitted around the pipe axis so as to be rotatable around the pipe axis, and the outer end is formed with a threaded portion which can be screwed to the pipe joint of the pipe, and is prevented from falling out of the metal flexible pipe by a retaining structure. It is characterized by comprising a held joint member and a socket fixed to a secondary end of the metal flexible tube and having a threaded portion that can be screwed into a sprinkler head. According to this configuration, the bending of the sprinkler pipe cannot be performed sufficiently in the required direction, and the pipe cannot be properly arranged in a desired direction and position, or even if the sprinkler head cannot be installed in a suitable vertical posture, By turning the rear joint member around the pipe axis with respect to the front joint member of the pipe joint,
The sprinkler pipe can be rearranged in a desired direction and position, and the sprinkler head can be easily adjusted to an optimum vertical posture.

A third aspect of the present invention provides a sprinkler piping system comprising a combination of a sprinkler pipe and a sprinkler head mounting pipe according to the first and second aspects. According to this configuration,
Even if the sprinkler pipe can not be bent sufficiently in the required direction and the sprinkler head cannot be installed in a suitable position and vertical position, the sprinkler head mounting pipe can be turned around the metal flexible pipe, By bending the metal flexible tube in the required direction at its corrugated portion, the sprinkler head can be easily adjusted to a suitable position and a vertical position.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a half sectional vertical side view of a sprinkler head mounting pipe according to the present invention. The sprinkler head mounting pipe 1 is interposed between a secondary end of a sprinkler pipe 50 shown as a conventional example in FIG. 6 and a sprinkler head 61 (FIG. 2) to connect the sprinkler head 61 to the pipe 50. This is a tube connected to the secondary end of the tube.

In FIG. 1, a sprinkler head mounting pipe 1 includes a flexible metal pipe 2, a joint body 3, and a socket 5. The metal flexible tube 2 is made of a stainless steel tube, and has a corrugated portion 2 as a flexible portion at an intermediate portion in the direction of the tube axis C.
a is formed. The corrugated portion 2a is composed of a pleated group whose diameter is increased in the radial direction of the metal flexible tube 2.

The joint body 3 is a member which is fitted to the primary end of the above-mentioned metal flexible tube 2 and has an inner end on the inner periphery thereof.
The first annular groove 3a of the strip is formed, and an external thread portion 3A which can be screwed to the female thread portion 56a of the cap nut 56 which is a secondary pipe joint of the sprinkler pipe 50 is formed on the outer periphery of the outer end portion. ing. A first elastic seal member 3a1 made of a rubber seal ring (O-ring) is provided in the first annular groove 3a.
Are fitted. Thereby, watertightness between the outer periphery of the primary end portion of the metal flexible tube 2 and the inner periphery of the joint body 3 is achieved.
Also, the first elastic sealing member 3a is inserted into the first annular groove 3a.
1 is fitted to the metal flexible tube 2 corresponding to the first annular groove 3a.
The first elastic seal member 3a1 is arranged at the outer peripheral position of the metal flexible tube 2, and the position corresponding to the first elastic seal member 3a1 of the metal flexible tube 2 is caulked in the diameter increasing direction. By caulking the metal flexible tube 2 in the radially expanding direction at a position corresponding to the first elastic sealing member 3a1, the joint body 3 can be fixed to the metal flexible tube 2, and the metal flexible tube 2 A retaining structure 7 for the joint body 3 is configured.

A socket 5 is externally fitted and fixed to the secondary end of the metal flexible tube 2. On the inner periphery of the outer end of the socket 5, a female screw portion 5a for screwing the male screw portion 61a of the sprinkler head 61 (FIG. 2) is formed. The outer periphery of the metal flexible tube 2 near the secondary side is covered with an electric insulating material 8.

As shown in FIG. 2, the sprinkler head mounting pipe 1 constructed as described above has the male screw portion 3A of the joint body 3 connected to the female screw of the cap nut 56 on the secondary side of the sprinkler pipe 50 described above. By screwing to the portion 56a, it can be connected to the secondary end of the sprinkler pipe 50. The screwing work of the male thread 3A of the joint body 3 with the female thread 56a of the cap nut 56 is performed by the square bulging portion 5 of the cap nut 56.
By engaging a tool such as a wrench or a spanner with the 6A and turning it in the tightening direction, it can be performed without turning the metal flexible tube 2. Therefore, even if the metal flexible tube 2 is bent in advance by the corrugated portion 2a, the sprinkler pipe 5
The sprinkler head mounting pipe 1 can be screwed into the sprinkler head pipe 0, and even when the sprinkler head mounting pipe 1 is screwed and completely connected to the sprinkler pipe 50, the metal flexible pipe 2 is connected with the corrugated portion 2a. By bending, the bending direction of the tip of the sprinkler head mounting tube 1 can be easily adjusted to a suitable vertical posture. Metal flexible tube 2
The sprinkler head 61 is attached to the socket 5 at the secondary side end by screwing the male screw part 61a of the sprinkler head 61 into the female screw part 5a. In the drawing, reference numeral 56B denotes a packing for preventing water leakage. When the female screw portion 56a of the cap nut 56 and the male screw portion 3A of the joint body 3 are formed into a tapered screw, and the two are screwed together, the packing 56B is used. Is not necessary. The sprinkler pipe 50 is connected to the primary end of the sprinkler head mounting pipe 1 as described above, and the sprinkler head 61 is connected to the secondary end of the sprinkler head mounting pipe 1.
As shown in the state of use of the sprinkler head mounting pipe 1 in FIG. 5, the sprinkler head mounting pipe 1 in which the corrugated portion 2a of the metal flexible pipe 2 is bent is attached to the ceiling via the mounting bracket 30. It is fixed to a support bar 31 arranged on the back and attached to the back of the ceiling.

FIG. 3 is a half sectional vertical side view showing another embodiment of the sprinkler head mounting pipe 1 according to the present invention.
This sprinkler head mounting pipe 1 is shown in FIGS.
The sprinkler head mounting pipe 1 shown in FIG. 3 is different from the sprinkler head mounting pipe 1 in that the corrugated portion 2a of the metal flexible pipe 2 is formed longer in the direction of the pipe axis C than the sprinkler head mounting pipe 1 shown in FIG. The difference is at the primary end of the tube 2. The sprinkler head mounting pipe 1 shown in FIG. 3 has a sealing ring 4 which is a member fitted at the primary end of the metal flexible tube 2 to the primary end of the metal flexible tube 2. A first annular groove 4a is formed on the inner periphery of the inner end portion, and a first elastic seal member 4A made of a rubber seal ring is fitted into the first annular groove 4a. I have. Further, a joint member 6 fitted from the outer end of the sealing ring 4 to the primary end of the metal flexible tube 2.
Is provided. The joint member 6 includes a sealing ring 4
And a member that is rotatable relative to the metal flexible tube 2 around the pipe axis C. The outer periphery of the member is attached to the secondary end of the sprinkler pipe 50, such as the steel pipe 51. A male screw portion 6a that can be screwed into the female screw portion 56a of the provided cap nut 56 is formed. A flange 2b formed by folding the primary end of the metal flexible tube 2 outward is locked on the primary end surface of the joint member 6, and the joint member 6 for the metal flexible tube 2 is locked. Is formed. A rectangular bulge (for example, a hexagonal bulge) 6c for engaging a tool such as a wrench or a spanner is formed on the outer periphery of the inner end of the joint member 6. Further, two second annular grooves 4b, 4b are formed on the outer periphery of the outer end of the sealing ring 4, and a second elastic groove made of a rubber seal ring is formed in the second annular grooves 4b, 4b. Seal member 4B, 4B
Are fitted. Therefore, the sliding gap between the outer periphery of the outer end of the sealing ring 4 and the inner periphery of the inner end of the joint member 6 is fitted into the second annular grooves 4b, 4b on the outer periphery of the sealing ring 4. The second elastic seal members 4B, 4B provide watertightness.

As shown in FIG. 4, the sprinkler head mounting pipe 1 constructed as described above has the male thread 6a of the joint member 6 screwed into the female thread 56a of the cap nut 56 of the sprinkler pipe 50 described above. By combining, it can be connected to the secondary end of the sprinkler pipe 50. The screwing work of the male screw portion 6a of the joint member 6 with the female screw portion 56a of the cap nut 56 is performed by engaging a tool such as a wrench or a spanner with the square bulging portion 6c of the joint member 6 and turning it in the tightening direction. This can be performed without turning the metal flexible tube 2. For this reason, even in a state where the sprinkler head mounting pipe 1 is completely screwed to the sprinkler pipe 50, only the metal flexible pipe 2 can be turned around the pipe axis C. Even if 2 is bent by the corrugated portion 2a, the bending direction of the tip of the sprinkler head mounting tube 1 can be easily adjusted to a suitable vertical posture. The sprinkler head 61 is attached to the socket 5 at the secondary end of the metal flexible tube 2 by screwing the male screw portion 61a of the sprinkler head 61 into the female screw portion 5a.

[0015] The sprinkler piping system of the present invention comprises:
Sprinkler head mounting pipe 1 shown in FIGS. 1 to 4
And a sprinkler pipe. The sprinkler pipe may be a sprinkler pipe 50 shown in FIG. 6 as a conventional example, and a steel pipe 51 may be used.
And a sprinkler pipe composed of a metal flexible pipe and the like. The type of the tube material and the material of the tube material constituting the sprinkler pipe are not limited.

In the above-described embodiment, the case where the cap nut 56 is provided at the secondary end of the sprinkler pipe 50 and connected to the sprinkler head mounting pipe 1 has been described. When a male screw portion is formed at the end, a female screw is formed on the inner periphery of the outer end of the joint body 3 in the sprinkler head mounting pipe 1 shown in FIG. 1, and the sprinkler head mounting pipe 1 shown in FIG. This can be coped with by forming the female screw portion by retreating the primary end of the metal flexible tube 2 on the inner periphery of the outer end of the joint member 6.

[0017]

According to the first aspect of the present invention, there is provided a sprinkler head mounting pipe interposed between a sprinkler head and a secondary side end of the sprinkler pipe and connecting the sprinkler head to the pipe. A metal flexible tube having a corrugated portion at an intermediate portion in the axial direction; a metal flexible tube which is externally fitted to a primary end of the metal flexible tube; an annular groove is formed on the inner periphery of the inner end; A joint body formed with a threaded portion capable of being screwed to the pipe joint of the pipe, and held by a retaining structure so as not to fall out of the metal flexible pipe; and a secondary end of the metal flexible pipe. And a socket formed with a threaded portion that can be screwed into the sprinkler head, so that the sprinkler pipe cannot be sufficiently bent in a required direction, and the pipe cannot be bent in a desired direction and Correctly positioned Or impossible, even if you can not install the sprinkler head to a suitable vertical position by bending the metallic flexible tube in its corrugated portion can be easily adjusted sprinkler head to a preferred position and vertical position.

According to a second aspect of the present invention, there is provided a sprinkler head mounting pipe interposed between a secondary end of a sprinkler pipe and a sprinkler head and connecting the sprinkler head to the pipe, wherein the sprinkler head mounting pipe is provided in a pipe axial direction. A flexible metal tube having a corrugated portion at an intermediate portion thereof, and a seal externally fitted to a primary end of the flexible metal tube and having annular grooves formed on an inner periphery of an inner end and an outer periphery of an outer end. A ring for outer circumference rotatably around a pipe axis from an outer end of the ring to a primary end of the metal flexible tube, and can be screwed to a pipe joint of the pipe at the outer end. A threaded portion is formed and is fixed to a secondary end of the metal flexible tube by a joint member held so as not to come off from the metal flexible tube by a retaining structure, and can be screwed to a sprinkler head. Socket with various threaded parts Since it is assumed that the sprinkler pipe can not be sufficiently bent in the required direction, the pipe cannot be correctly arranged in a desired direction and position, or even if the sprinkler head cannot be installed in a suitable vertical posture. By rotating the joint member around the pipe axis, the sprinkler pipe is rearranged in a desired direction and position, or the metal flexible pipe is bent at its corrugated portion, so that the sprinkler head is in a suitable position and vertical position. Can be adjusted easily.

According to a third aspect of the present invention, the sprinkler piping system is constituted by a combination of the sprinkler piping and the sprinkler head mounting pipe according to the first and second aspects, so that the sprinkler piping is bent in a required direction. Even when the sprinkler head cannot be installed in a suitable position and in a vertical position, the metal flexible tube of the sprinkler head mounting tube can be turned around the pipe axis, or the metal flexible tube can be connected to the corrugated portion. By bending the sprinkler head in the required direction, the sprinkler head can be easily adjusted to a suitable position and a vertical posture.

[Brief description of the drawings]

FIG. 1 is a half sectional vertical side view showing an embodiment of a sprinkler head mounting pipe.

FIG. 2 is a half sectional vertical side view showing a state in which a sprinkler head and a sprinkler pipe are connected to the sprinkler head mounting pipe.

FIG. 3 is a half sectional vertical side view showing another embodiment of the sprinkler head mounting pipe.

FIG. 4 is a half sectional vertical side view showing a state where a sprinkler head and a sprinkler pipe are connected to the sprinkler head mounting pipe.

FIG. 5 is a diagram showing a use state of a sprinkler head mounting pipe.

FIG. 6 is an explanatory view showing an example of a sprinkler pipe construction using a conventional sprinkler pipe.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Sprinkler head mounting pipe 2 Metal flexible pipe 2a Corrugated part 3 Joint body 3a Annular groove 4 Sealing ring 5 Socket 5a Female screw part 6 Joint member 7 Retaining structure 9 Retaining structure 50 Pipe for sprinkler 51 Steel pipe

Claims (3)

[Claims] 1. A secondary end of a sprinkler pipe,
A sprinkler head mounting pipe interposed between the sprinkler head and the sprinkler head for connecting the sprinkler head to the pipe, a metal flexible pipe having a corrugated portion at an intermediate portion in the pipe axis direction; The outer end is formed with a threaded portion which can be screwed to the pipe joint at the outer end, and is made of metal by a retaining structure. A joint body held so as not to fall out of the flexible tube; and a socket fixed to the secondary end of the metal flexible tube and having a threaded portion capable of being screwed to a sprinkler head. A sprinkler head mounting pipe. 2. A secondary end of a sprinkler pipe,
A sprinkler head mounting pipe interposed between the sprinkler head and the sprinkler head for connecting the sprinkler head to the pipe, a metal flexible pipe having a corrugated portion at an intermediate portion in the pipe axis direction; An annular groove formed on the inner periphery of the inner end and the outer periphery of the outer end thereof, respectively; The outer end is rotatably fitted around the pipe axis so as to be rotatable around the pipe axis, and the outer end is formed with a threaded portion which can be screwed to the pipe joint of the pipe, and is prevented from falling out of the metal flexible pipe by a retaining structure. A sprinkler head comprising: a held joint member; and a socket fixed to a secondary end of the metal flexible tube and having a threaded portion that can be screwed into the sprinkler head. Mounting tube. 3. A sprinkler piping system comprising a combination of a sprinkler pipe and a sprinkler head mounting pipe according to claim 1.