JPH06261956A - Method and structure for fixation of sprinkler head mounting pipe - Google Patents

Abstract

PURPOSE:To facilitate dimensional determination of a mounting pipe in a fixing structure for fixing a sprinkler head mounting pipe to a fixing member by furnishing a projection on the mounting pipe, fitting the projection in a hole provided in a fixing tool, and mounting this tool on the fixing member in the gripping part. CONSTITUTION:A sprinkler head 4 of embedded type is screwed fast on the foremost part of a mounting pipe 1 where a water distribution pipe is connected through a flexible pipe 1b and a joint 1a, wherein a channel-form steel 22 is installed on a ceiling underlay 21 which holds a ceiling 20 suspendedly, and a fixing member 23 is installed on the channel steel, followed by securing with a metal fixture 24. Using a fixing tool 5, the mounting pipe 1 is secured to the fixing member 23, wherein a projection is furnished on the outer surface a certain distance over the bottom, and a plurality of holes 2 for fitting of the projection are provided zigzag over the height on one side of the fixing tool 5. The gripping part consisting of an upper and a lower arm of this fixing tool 5 is engaged by the fixing member 23, and fixation of the fixing tool 5, i.e., the mounting pipe 1, is made with driving of a wedge member 11.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fixing structure for a fire extinguishing sprinkler head mounting pipe and a fixing member which are provided on the ceiling of a building or the like, and a fixing method therefor.

[0002]

2. Description of the Related Art An example of a conventional fixing structure for a sprinkler head mounting tube is shown in Japanese Utility Model Publication No. 59-935. The fixing structure described in this publication relates to a structure in which a sprinkler head is attached to the tip of a sprinkler head attachment pipe that is branched from a main water supply pipe that is piped under the ceiling and is plumbed down. This is to attach the tip of the sprinkler head mounting pipe to the ceiling surface at a predetermined position, bridge the grooved steel on the ceiling base material that fixes the ceiling plate, and The fixing material is fixed, and the sprinkler head mounting pipe is fixed to the fixing material by a screw-fastening type fixing fitting.

[0003]

In the above fixing structure, the screw of the fixing metal fitting is tightened by tightening the screw of the fixing metal fitting with the tip of the sprinkler head mounting pipe (hereinafter referred to as the mounting pipe) set at a predetermined position with respect to the ceiling surface. Since the sprinkler head mounting pipe is fixed, there is a problem that it is troublesome to measure the dimensions of the tip of the mounting pipe and the ceiling surface. Actually, this dimensioning changes depending on the thickness of the ceiling plate and the shape size (type) of the sprinkler head.
The work at the site became more complicated. In addition, there is a problem that the mounting pipe moves from a predetermined position when the tightening of the screw of the fixing bracket is insufficient, the pressure in the pipe fluctuates suddenly, or a large external force acts on the mounting pipe. In addition, some sprinkler heads include so-called exposed sprinkler heads in which the mounting pipe is fixed on the ceiling and then screwed from the room side to the tip of the mounting pipe for mounting. When this is screwed in, the mounting pipe is surely subjected to a rotational force, so the fastening of the fixing bracket must be sufficient.If it is insufficient, there is a fatal problem that the sprinkler head rotates together and cannot be screwed in. Occurs.

The present invention solves the above problems,
The mounting position of the sprinkler head with respect to the ceiling surface can be easily dimensioned, and the mounting structure of the sprinkler head mounting pipe for fixing the mounting pipe so that it does not move in the axial or radial direction and does not rotate, and It aims at providing the fixing method.

[0005]

First, a fixing structure of a sprinkler head mounting pipe and a fixing member of the present invention has a mounting pipe having a protrusion on an outer surface and a hole capable of being fitted into the protrusion,
It comprises a fixture having a holding part for mounting and holding the mounting tube, a gripping part for mounting and gripping on the fixing material, and a tightening member. Further, in the method of fixing the sprinkler head mounting pipe and the fixing member of the present invention, the mounting pipe is mounted on the holding portion of the fixing tool, and the projection formed on the outer surface of the mounting pipe and the holding portion are formed. After fitting the holes with each other and mounting the grip portion of the fixing tool on the fixing material, the fixing tool, the mounting pipe and the fixing material are clamped and fixed to each other by the tightening member.

In the above-mentioned fixing structure and fixing method, a plurality of holes are formed in the holding portion of the fixing tool at appropriate intervals in the axial direction, whereby the mounting position of the sprinkler head on the ceiling surface changes. However, it is desirable to select a fitting combination of the protrusion and the hole so that the protrusion can be adjusted to a predetermined position. Further, it is desirable to interpose a wedge-shaped tightening member between the fixing material and the grip portion.

[0007]

Since the present invention has the above-mentioned structure, the fitting tube can be naturally dimensioned by simply fitting the projection of the fitting tube into the hole of the fixing tool and fixing the projection as it is to the fixing material. Moreover, when a plurality of holes are provided at appropriate intervals, by selecting the most suitable combination of holes and protrusions,
The mounting pipe can be fixed in correspondence with a predetermined mounting position of the sprinkler head, which changes depending on the shape size (type) of the sprinkler head, the thickness of the ceiling plate, and the like.

Further, the holding portion of the fixing tool holds the mounting tube so as to wrap it, the fitting of the projection and the hole is performed, and the holding portion is attached to the fixing material. In this state, a fastening member such as a wedge is driven between the fixing member and the holding portion, so that the fixing member, the mounting tube and the fixing member are pressed against each other to exert a reaction force and are firmly fixed. Moreover, since the projection and the hole are fitted together, the mounting tube does not rotate together even if a rotational force due to screwing is applied after the fixing, and neither moves in the axial direction nor in the radial direction.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing a mounting state of a mounting pipe and a fixing material under the ceiling, FIG. 2 is a side view of a fixing portion, and FIG. 3 is a rear view. In FIG. 1, a flexible pipe 1b attached to a water distribution pipe branched from a main water supply pipe in the ceiling is connected to the attachment pipe 1 via a joint 1a. A female screw is provided at the tip of the mounting pipe 1, and an embedded sprinkler head 4 is screwed in. Then, the channel steel 22 is bridged on the ceiling base material 21 for fixing and suspending the ceiling 20, and further the fixing material 23 is bridged on the channel steel 22 and fixed by the mounting bracket 24. There is. The mounting pipe 1 is fixed to the fixing member 23 by using a fixing tool 5. As the fixing member 23, a grooved steel or the like is used in addition to the rectangular pipe as shown. The attachment pipe 1 can be made of a plastic pipe, a cast pipe, a joint, a combination thereof, or any other suitable material and shape. The upper end has a connection portion with the flexible tube 1b, and a connection portion with a screw connection or a mechanical joint is provided. A female thread is usually formed at the lower end, and the sprinkler head 4 is screwed in and attached. A protrusion 7 is provided on the outer surface, which is appropriately above the lower end. This projection can be formed integrally in the case of casting or by welding or the like in the case of a steel pipe.

Reference numeral 5 denotes a sheet metal fixture (hereinafter, a fixture may be a plastic material or the like), and a holding portion 8 for mounting and holding the attachment pipe 1 while crimping it.
The holding part 10 to be mounted on the fixing member 23, that is, the hold arm 10
a, 10b and a hole 2 into which the above-mentioned projection 7 of the mounting tube 1 can be fitted. When viewed from above, the fixing member 5 has a substantially U-shaped holding portion 8 and a holding portion 10 that follows the holding portion 8 and has a substantially U-shape. As shown in the figure, the side surface of the grip portion 10 is formed by notching the approximately middle portion of the flat plate in accordance with the shape and size of the fixing material 23 to form hold arms 10a and 10b that sandwich the fixing material 23. The tip is bent inward and the hook part
10c and 10d are provided.

Next, the hole 2 provided in the fixing metal fitting will be described. In this embodiment, four holes 2a, 2b, 2c and 2d are provided at appropriate intervals in a zigzag pattern in the axial direction. Here, in order to determine the position of the hole, as shown in FIG. 2, the sprinkler head 4 is always at a predetermined position with respect to the lower surface of the ceiling 20, in other words, the L dimension (La dimension in the case of the drawing) is predetermined. So that the shape and dimensions of the sprinkler head 4 (type), the thickness of the ceiling 20 and the ceiling base material 2
1, the basic dimensions are determined in association with the height dimensions of the channel steel 22, the fixing member 23 and the axial dimension of the fixing member 5. However, depending on the construction site, there is a difference in the L dimension due to the difference in the plate thickness of the ceiling and the type of the sprinkler head 4. That is, the ceiling plate has several plate thicknesses, and in some cases, two sheets are stacked. Further, in the sprinkler head 4, there is the exposed type sprinkler head 40 as described above. Therefore, the L dimension changes depending on the combination of the ceiling plate and the sprinkler head. Therefore, it is desirable to provide a plurality of axially displaced holes as shown in the figure so that this displacement amount can be flexibly corrected. Actually, there are four types of L dimension, so the above four holes are provided at intervals of about 10 mm.
Although the holes are formed in a zigzag shape in terms of strength and manufacturing, they may be formed in a single row or may be formed on the side surface side of the holding portion. Reference numeral 11 denotes a tightening member, which is a wedge member in the present embodiment in which both ends of the steel plate are bent at right angles and one surface in the longitudinal direction has a small inclination of about 10 ° or less. Alternatively, it may be wood or may not have any slope or taper.

Next, a method of fixing the mounting pipe 1 to the fixing member 23 will be described. The mounting pipe 1 is mounted on the holding portion 8 of the fixing metal fitting 5, and the protrusion 7 of the mounting pipe and one of the holes 2a, 2b, 2c, 2d of the fixing metal fitting is fitted to the ceiling 20 in accordance with the mounting position of the sprinkler head. Select a combination. That is, in the case of the present embodiment, the position of the hole corresponding to the predetermined La dimension is 2a, so that the protrusion 7 is fitted into the hole 2a to naturally give the predetermined dimension. For example, in the case where the ceiling boards are constructed in two layers, the fitting with the holes 2b will be selected in order to lower the sprinkler head mounting position by the thickness of the board. If the construction of the exposed type sprinkler head
As described above, the fitting with the hole 2d is selected. Next, the fixing member 23 is sandwiched between the hold arms 10a and 10b and mounted so that the outer diameter portion 9 of the mounting tube 1 is in contact. After that, the fixing material
A wedge member is provided between 23 and the hook portion 10c, 10d of the hold arm.
11 is hammered in to fix the fixture 5 to the fixture 23. Since the fixing work at this time is only driven, it can be done very quickly and easily. Therefore, the wedge member, the fixing member, the mounting pipe, and the fixing metal member are fastened to each other and firmly fixed. Further, even if severe vibration is applied to the mounting pipe or the like after the fixing, the action due to the elastic deformation of the hold arm also works and the fixing is not loosened.

FIG. 4 shows another embodiment of the present invention in which the ceiling is double-stretched and the exposed sprinkler head 40 is mounted. In this case the ceiling plates 20 and 25
And the size of the sprinkler head 40 is different, the mounting position of the sprinkler head on the lower surface of the ceiling is L
Change to d. However, if the fitting of the projection 7 and the hole is appropriately selected, that is, the hole 2d is selected, this dimensioning is automatically performed. Moreover, even if the sprinkler head 40 is screwed in from the room side, the mounting pipe 1 does not originally move and rotate due to the above-mentioned fixing, but since the projection and the hole are fitted on it, the mounting pipe 1 is positioned more strongly against rotation. There is no deviation. FIG. 5 shows still another embodiment in which a bolt material 12 is used as a tightening member. Therefore, in this case, after the grip portion is passed through the fixing material and the position is determined, the bolt material 12 is screwed into the fixing material side to tighten and fix the fixing tool, the mounting pipe, and the fixing material. It is the same. Although the mounting pipe 1 has a straight pipe shape in the three embodiments described above, it is also useful to use a mounting pipe in which a bent connection portion is continuously and integrally provided above the fixing metal fitting 5 depending on the piping situation. Is. Further, instead of interposing a tightening member at the tip portion of the gripping portion as in the above example, it may be driven between the fixing material and the outer surface of the mounting pipe, and this may also be done between the fixing material and the gripping portion. It is included in the range to intervene.

[0014]

According to the present invention, the dimensioning of the sprinkler head mounting position, which has conventionally been troublesome, can be efficiently and easily performed by anyone. Moreover, this can be done by selecting the most appropriate one according to the construction at the site, which is convenient. Further, the fixing work can be performed only by fixing it with a wedge member or the like, and it can be firmly fixed without rotating and shifting in the axial direction and the radial direction.

[Brief description of drawings]

FIG. 1 is a perspective view around a sprinkler head mounting tube showing an embodiment of the present invention.

FIG. 2 is a side view of a fixing metal part of FIG.

FIG. 3 is also a side view of FIG.

FIG. 4 is a side view of a fixing metal part showing another embodiment of the present invention.

FIG. 5 is a side view of a fixing metal part showing still another embodiment of the present invention.

[Explanation of symbols]

 1 ... Mounting pipe 2 ... Hole 3 ... Mounting pipe tip 4,40 ... Sprinkler head 5 ... Fixing metal fitting 6 ... Fixing metal fitting body 7 ... Projection 8 ... Holding part 10 ... Gripping part 11 ... Wedge 12 ... Bolt material 23 ... Fixing Material

Claims (6)

[Claims] 1. A fixing structure for fixing a sprinkler head mounting pipe and a fixing member, the mounting pipe having a protrusion on an outer surface, and a hole capable of being fitted into the protrusion, wherein the mounting pipe is mounted and held. A fixing structure of a sprinkler head mounting pipe, comprising: a holding member having a holding portion, a holding portion that is mounted on the fixing material and grips the holding material, and a tightening member. 2. The fixing structure for a sprinkler head mounting pipe according to claim 1, wherein the holding portion of the fixing member is provided with a plurality of holes at appropriate intervals in the axial direction. 3. The tightening member is a wedge member interposed between the fixing member and the grip portion.
Alternatively, the fixing structure for the sprinkler head mounting pipe according to 2 above. 4. A fixing method for fixing a sprinkler head mounting pipe and a fixing member, wherein the mounting pipe is mounted on a holding portion of a fixture, and a protrusion formed on an outer surface of the mounting pipe and the holding portion. After fitting the holding portion of the fixture to the fixing material, the fixing member and the mounting pipe and the fixing material are fixed by a tightening member so that they can be tightened to each other. How to fix the sprinkler head mounting pipe. 5. A plurality of holes formed in the holding portion are provided at appropriate intervals in the axial direction, and a fitting combination of the projection and the hole is formed corresponding to a mounting position of the sprinkler head with respect to the ceiling surface. 5. The method of fixing a sprinkler head mounting pipe according to claim 4, wherein after the selection, the fixing is performed as described above. 6. The method of fixing a sprinkler head mounting pipe according to claim 4, wherein the tightening member is interposed and fixed between the fixing member and the grip portion.