JP2000079181A - Structure for assembling sprinkler fire extinguishing facility - Google Patents

Abstract

PROBLEM TO BE SOLVED: To minimize a sleeve section for containing a sprinkler head side and to facilitate work for maintaining/changing a duct. SOLUTION: An opening surface 11a1 of a lower end opening section 11a is positioned at a ceiling surface 14a and an opening surface 11b1 of an upper end opening section 11b is buried in a ceiling slab 14 in a gradient state at a smaller angle than 90 deg. against the ceiling surface 14a in a cylindrical container 11 open at an upper side and a lower side. A shield pipe 12 having an internal diameter larger than an external diameter of a duct 21 of a sprinkler fire extinguishing facility 20 is connected with the upper end opening section 11b of the container 11. The duct 21 is inserted penetrating from an end of an opposite side of the container 11 of the shield pipe 12 into interiors of the shield pipe 12 and the container 11 (a sleeve section) in the state that one end is disposed within the interior of the container 11. A sprinkler head 22 is assembled to one end of the duct 21, and a smoothly planed plate 13 for covering the opening surface 11a1 is detachably mounted from a room side 31 on the lower end opening section 11a of the container 11.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for mounting a sprinkler fire extinguishing system, for example, using a flexible pipe such as a resin pipe for the sprinkler fire extinguishing system, wherein a sprinkler head side is provided in a ceiling slab of a building. And a mounting structure for a sprinkler fire extinguishing system.

[0002]

2. Description of the Related Art Conventionally, as a mounting structure of a sprinkler fire extinguishing system in a building in which a ceiling is formed by a concrete slab and the lower surface of the ceiling slab is used as a ceiling surface, for example, FIG. 2 (a) and FIG. The structure shown is known. 2A is a plan sectional view, and FIG. 2B is a side sectional view.

That is, in this mounting structure 50, a concave sleeve portion 52 for accommodating the sprinkler head 42 side of the sprinkler fire extinguishing equipment 40 is formed on the ceiling surface 51a which is the lower surface of the ceiling slab 51. The sleeve portion 52 has a shallow first portion on the lower side (the ceiling surface 51a side).
It is composed of a sleeve portion 52a and an upper deep second sleeve portion 52b formed continuously with the sleeve portion 52a. The second sleeve portion 52a is formed in a substantially rectangular shape in plan cross section, and the second sleeve portion 52b is formed of the first sleeve portion 52a. The sleeve portion 52a is formed at a substantially central portion in a substantially circular shape in a plan cross section. In the ceiling slab 51 near the side wall of the second sleeve portion 52a, a sheath tube 53 is formed from the side wall of the second sleeve portion 52b to the ceiling surface 51.
a is arranged substantially parallel to a, and a piping header (not shown)
It is buried so as to extend to the side.

[0004] The pipe 41 of the sprinkler fire extinguishing equipment 40 is a flexible pipe such as a resin pipe. Then, from the side of the second sleeve portion 52b through the inside of the sheath tube 53, the second sleeve portion 52
b, is inserted in a protruding state, and has one end extending substantially to the center of the second sleeve portion 52b. A pipe joint 54 is attached to one end of the pipe 41, whereby the one end of the pipe 41 is bent downward at a substantially right angle. A sprinkler head 42 is attached to one end of the pipe 41. The sprinkler head 42 is supported by the ceiling slab 51 via the mounting bracket 55 so that the tip portion is housed in the sleeve portion 52 with the front end portion facing the indoor side 61 from the ceiling surface 51a.

Further, a plate-like lid 56 having an outer shape substantially equal to the shape of the first sleeve portion 52a as viewed in a plane cross section is provided with an adhesive 57 or the like so as to cover the opening of the sleeve portion 52 while avoiding the tip portion of the sprinkler head 42. Attached through. At this time, the lid 56 is adhered to the upper surface of the first sleeve portion 52a formed between the side wall of the first sleeve portion 52a and the side wall of the second sleeve portion 52b. Although not shown, the inside of the normal sleeve portion may be filled with rock wool or the like for sound insulation.

[0006] In the above-mentioned conventional mounting structure, when the construction is carried out on site, the sleeve portion 5 is first placed at a predetermined position before the concrete is cast for forming the ceiling slab 51.
A boxed sleeve having an outer shape substantially equal to the outline of No. 2 is arranged, and the sheath tube 53 is arranged so as to communicate with the boxed sleeve. Next, concrete is poured in, and then the box removing sleeve is removed to remove the sleeve portion 5.
Get 2.

Next, as described above, the pipe 41 of the sprinkler fire extinguishing system 40 is inserted into the sheath 53 from the side where the sheath header of the sheath 53 is attached to the sheath, and the second sleeve 5
2b. Then, a pipe joint 54 and a sprinkler head 42 are attached to one end of the pipe 41 protruding into the second sleeve portion 52b.
2 is supported on the ceiling slab 51 by the mounting bracket 54. Finally, a lid 56 is attached to the opening of the sleeve portion 52, and finished by painting, cloth, or the like.

[0008]

As described above, the conventional structure for mounting a sprinkler fire extinguishing system has a structure in which one end of a pipe of the sprinkler fire extinguishing system is bent at a substantially right angle in a sleeve portion for mounting a sprinkler head. I have. However, since the sheath tube is buried substantially parallel to the ceiling surface, the piping inside the sheath tube is also arranged substantially parallel to the ceiling surface and protrudes from the side wall of the second sleeve portion. Moreover, the pipe itself is made of a material that has some hardness even though it is flexible and cannot be bent sharply. Therefore, in order to arrange the sprinkler head at a predetermined position with the sprinkler head attached to one end of the pipe, it is necessary to increase the diameter of the second sleeve portion.

As a result, in order to secure the upper surface of the first sleeve portion to which the lid is attached, the diameter of the first sleeve portion must be increased to increase the opening area of the sleeve portion. Inconvenience that it becomes. This lid is formed of a material different from the surrounding material, that is, a material different from the concrete material, in order to reduce the weight, and thus gives a sense of incongruity in appearance even when finished with a paint or cloth.

[0010] Further, as described above, since the pipe is disposed substantially parallel to the ceiling surface and is bent at a substantially right angle in the sleeve portion, the pipe may be damaged by mistake when the anchor bolt or the like is driven into the ceiling slab. When repairing or replacing a pipe, as in the case where the pipe has been damaged, it is extremely difficult to pull out the pipe from the sheath and insert it into the sheath. In addition, when repairing or replacing the pipes, the work cannot be performed unless the attached lid is broken, so that complicated work is required before the repair and replacement work, and a spare lid is also required.

Further, by increasing the diameters of the first sleeve portion and the second sleeve portion, the volume of the sleeve portion is increased.
Therefore, when the sleeve portion is filled with rock wool or the like for sound insulation, it is troublesome and costly.

[0012]

In order to solve the above-mentioned problems, a sprinkler fire extinguishing equipment mounting structure according to the present invention comprises a tubular container which is open at the top and bottom, and whose lower end opening is formed on the ceiling surface of the building. With the opening at the upper end opening inclined at an angle of less than 90 degrees with respect to the ceiling surface, and buried in the ceiling slab forming the ceiling, the outer diameter of the pipe to be attached to the sprinkler head of the sprinkler fire extinguishing equipment A sheath tube having a large inner diameter is connected to the upper end opening of the container, and the pipe is inserted into the sheath from the end of the sheath tube opposite to the container and through the upper end opening of the sheath tube and the container. One end side is provided in the container, and at one end of the pipe, a sprinkler head is housed in the container such that the tip end faces the indoor side from the ceiling surface. Mounted state, the bottom opening of the container, cosmetic plate covering the open surface is a detachably mounted configuration from the indoor side to avoid the tip of the sprinkler head.

[0013] In the present invention, the container accommodating the sprinkler head side is formed in a cylindrical shape having an upper end opening, and the opening is inclined at an angle smaller than 90 degrees with respect to the ceiling surface. Therefore, the upper end opening is directed obliquely upward, and the sheath connected to the upper end opening is disposed so as to extend obliquely upward. Therefore, even if the piping of the sprinkler fire extinguishing equipment inserted into the sheath is made of a flexible but hardly bendable piping such as a resin pipe, Since it is not necessary to bend at a right angle as in the above, the sprinkler head is attached to one end of the pipe and the sprinkler head is arranged at a predetermined position while reducing the inner diameter of the container and the volume of the container, that is, the sleeve inside the container. The size of the unit can be reduced.

[0014] Further, as the inner diameter of the container is reduced, the area of the opening surface of the lower end opening of the container is also reduced, and the decorative plate corresponding to the conventional lid attached to the lower end opening has a small area. Will be. Further, since the pipe is inserted into the sheath that extends obliquely upward, when repairing and replacing the pipe, it is very easy to pull out the pipe from the sheath and insert the pipe into the sheath. Further, since the decorative plate is detachably mounted from the indoor side, there is no need to break the decorative plate in order to repair or replace the piping. Further, since the decorative plate itself serving as the lid has already been finished, the finishing of the ceiling surface is completed only by mounting the decorative plate on site.

Further, since the container has a cylindrical shape having an upper end opening and is buried in the ceiling slab, the container is arranged at a predetermined position and concrete is cast to form the ceiling slab and the ceiling slab is formed. When the container is buried in the slab, it is not necessary to remove the container after placing concrete.

[0016]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view showing an embodiment of a structure for mounting a sprinkler fire extinguishing system in a building according to the present invention. FIG. 1 is a sectional view of an essential part showing an embodiment of a mounting structure of a sprinkler fire extinguishing equipment according to the present invention, and particularly shows a vicinity of a sprinkler head of the sprinkler fire extinguishing equipment.

As shown in FIG. 1, the mounting structure of the sprinkler fire extinguishing equipment (hereinafter simply referred to as mounting structure).
In 10, a cylindrical container 11 having an open top and bottom, and a container 11
Sheath 12 connected to upper end opening 11b of container 1 and container 1
1. A sprinkler fire extinguishing system 20 having one end disposed therein.
Connected to one end of pipe 21 and one end of pipe 21
The sprinkler head 22 housed in the
It is constituted by a decorative plate 13 which covers the opening face 11a ₁ of the lower end opening 11a of the.

The container 11 is a ceiling slab 1 forming a ceiling.
The inside of the container 11 forms a so-called sleeve portion. The container 11 is tilted an angle smaller than 90 degrees open surface 11b ₁ relative to the ceiling surface 14a at the ceiling surface of the lower end opening 11a building is located in (ceiling lower surface of the slab 14) 14a and the upper end opening 11b It is buried in the ceiling slab 14 in an upright state. In the present embodiment, for example, the container 11 has a substantially cylindrical inner lower part side (the ceiling surface 14a side) and a state in which the inner diameter extends obliquely upward from the upper end of the lower part and is reduced upward. And an upper side formed on the upper surface.

The sheath pipe 12 connected to the upper end opening 11b of the container 11 has an inner diameter larger than the outer diameter of the pipe 21 of the sprinkler equipment 20, and is inclined so as to extend the upper side of the container 11. It is buried in the ceiling slab 14 in a state of extending upward and further extending toward a piping header (not shown).

The pipe 21 of the sprinkler equipment 20 is formed of a resin pipe as in the prior art. And sheath tube 1
2 from the end opposite to the container 11, that is, the inside of the sheath 12 and the upper end opening 1 of the container 11 from the pipe header mounting side.
It is inserted in a state where it protrudes into the container 11 via 1b, and is provided in a state where one end side is arranged in the container 11.

In this embodiment, a pipe joint 15 is attached to one end of the pipe 21. At this time, the pipe joint 15
Is the opening surface 15a in the opening on the pipe 21 side
Pipe in a state inclined obliquely upward with respect to approximately equal the ceiling surface 14a and the opening surface 11b ₁ of the first top opening 11b 2
1 is attached to one end side. Therefore, the one end of the pipe 21 is bent in a “<” shape by attaching the pipe joint 15.

A sprinkler head 22 is attached to one end of the pipe 21. The sprinkler head 22 is supported by the container 11 via the mounting bracket 16 such that the sprinkler head 22 is housed in the container 11 with the front end portion facing the indoor side 31 from the ceiling surface 14a.

The decoration plate 13 is formed in a shape to cover the opening surface 11a ₁ of the lower end opening 11a of the container 11 to avoid the tip of the sprinkler head 22. Further, the decorative plate 13 is detachably mounted from the indoor side 31 and has a surface previously finished with cloth, painting, or the like in a factory or the like before being transported to the site.

In the present embodiment, the decorative plate 13 is formed in a ring shape having a hole at the center thereof through which the tip of the sprinkler head 22 is inserted and having a diameter slightly larger than the inner diameter of the lower end opening 11a of the container 11. ing. Further, on the surface of the decorative plate 13 on the container 11 side, a protruding portion 13a is formed at the position of the edge of the hole and the position of the inner surface of the container 11, and the tip of the sprinkler head 22 is inserted through the hole. In the state, the projecting portion 13a is
It is mounted so that it does not easily come off due to vibration or the like by being fitted into a.

The portion 13b extending from the outer protruding portion 13a serves as a grip portion for detaching the decorative plate 13 attached to the lower end opening 11a of the container 11, and the decorative plate 13 is unnecessarily used for the container. It also serves as a stopper that prevents the lower end 11 from entering the lower end opening 11a. Although not shown, the container 1
In some cases, rock wool or the like may be filled between the sprinkler head 1 and one end of the pipe 21 for sound insulation.

In the above-described mounting structure 10, prior to placing concrete for forming the ceiling slab 14, the container 11 is placed at a predetermined position and communicated with the container 11 before the concrete is cast on the site. The sheath tube 12 is arranged. Then, by casting concrete,
Obtain the ceiling slab 14 and transfer the container 11 to the ceiling slab 1
4 buried inside.

Next, pipe 2 of sprinkler fire extinguishing system 20
1 is the sheath tube 1 from the side of the sheath header 12
2 and further protrudes into the container 11 from the upper end opening 11b. And the pipe 2 protruding into the container 11
The pipe joint 15 is attached to one end of the pipe 1, the sprinkler head 22 is attached to one end of the pipe 21, and the sprinkler head 22 is supported on the container 11 by the fitting 16. The container 11 is filled with rock wool or the like, and as a final finish, a decorative plate 13 is attached to the lower end opening 11a of the container 11.

As described above, the mounting structure 10 of this embodiment is
Then, the container 11 containing the sprinkler head 22 side
Since There has been provided in a state made cylindrical having a top opening 11b, inclined to an angle smaller than 90 degrees the opening surface 11b ₁ relative to the ceiling surface 14a, the upper end opening 1
1b is directed obliquely upward, and the sheath 12 connected to the upper end opening 11b is disposed so as to extend diagonally upward.

Therefore, the pipe 21 itself of the sprinkler fire extinguishing system 20 inserted into the sheath 12 is formed of a flexible pipe such as a resin pipe or the like which cannot be bent suddenly. However, since the pipe 21 does not need to be bent at a right angle as in the prior art, the sprinkler head 22 is attached to one end of the pipe 21 and the sprinkler head 22 is disposed at a predetermined position while the inner diameter of the container 11 and the container 11 can be reduced, that is, the sleeve portion in the container 11 can be reduced.

[0030] Then with the reduction of the inner diameter of the container 11, since the area of the opening surface 11a ₁ of the lower end opening 11a of the container 11 can be miniaturized, the decoration plate 13 is also small area attached to the lower end opening 11a ones It can be. Therefore, even if the material of the decorative plate 13 is different from that of the ceiling slab 14, the decorative plate 1 is
Since the area of the portion 3 is small, there is no unnaturalness in appearance.

Since the space in the container 11 can be reduced, it does not take much time to fill the container 11 with rock wool or the like for sound insulation, and the amount of rock wool or the like can be reduced. As a result, the cost for the sound insulation processing can be reduced.

Further, in the present embodiment, the pipe 21 is inserted into the sheath 12 extending obliquely upward, and the pipe 21 is not bent as in the prior art. The work of pulling out from the sheath tube 12 and inserting it into the sheath tube 12 can be performed very easily. Further, since the decorative plate 13 is detachably mounted from the indoor side 31, there is no need to break the decorative plate 13 to repair or replace the pipe 21. As a result, complicated work up to the repair / replacement work becomes unnecessary, and the spare of the decorative plate 13 becomes unnecessary. Therefore, the pipe 21
Can be easily repaired and replaced, and the cost required for repair and replacement can be reduced.

Further, since the decorative plate 13 itself serving as a lid has already been finished, when installing the mounting structure 10 of the present embodiment, the finish of the ceiling surface 14a can be achieved simply by mounting the decorative plate 13 on site. Is completed. Therefore, the construction work can be simplified and the construction period can be shortened, and the cost can be reduced.

In the present embodiment, since the ceiling 11 is formed by placing the container 11 at a predetermined position and casting concrete to form the ceiling slab 14, the container 11 can be buried in the ceiling slab 14. Rear container 11
No removal work is required. Therefore, compared with the conventional method in which concrete is poured after the box-removing sleeve is arranged at a predetermined position and then the box-removing sleeve is removed, the construction work can be omitted and the construction period can be shortened.

In the above-described embodiment, the container in the present invention has a cylindrical shape. However, the container may have any shape as long as it is open vertically, and is not limited to this example.

Although an example has been described in which the ceiling slab is formed by pouring concrete on site, for example, the ceiling slab may be formed of a half precast (PC) member. In this case, the container can be provided together with the ceiling slab simply by forming a half-PC member in which the container is buried in advance as in the above-described embodiment and transporting the container to the site and installing the half-PC member. The effect of being able to omit the installation work of the container by the above is obtained.

[0037]

As described above, according to the mounting structure of the sprinkler fire extinguishing system according to the present invention, since the opening surface of the upper end opening of the container is inclined at an angle smaller than 90 degrees with respect to the ceiling surface, Since the sheath pipe is arranged to extend obliquely upward, a sprinkler head is attached to one end of the pipe of the sprinkler fire extinguishing equipment inserted into the sheath, and the sprinkler head is placed in a predetermined position while being placed in the container (sleeve portion). Can be reduced. Therefore, the area of the opening surface of the lower end opening of the container can also be reduced, so that the decorative plate attached to the lower end opening can also have a small area, and it is possible to prevent the appearance from being uncomfortable. In addition, since the sheath pipe extends diagonally upward and the decorative plate is detachably mounted from the indoor side, the work of repairing and replacing the piping can be easily performed, and the repair and replacement is easy. The required costs can also be reduced.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a main part showing an embodiment of a mounting structure of a sprinkler fire extinguishing equipment in a building of the present invention;
It is a figure showing the sprinkler head neighborhood.

FIG. 2 is an explanatory view showing an example of a mounting structure of a conventional sprinkler fire extinguishing equipment, where (a) is a plan sectional view and (b).
Is a side sectional view.

[Explanation of symbols]

10 ... mounting structure, 11 ... container, 11a ... bottom opening, 11a _1, 11b _1, 15a ... opening face, 11b ... upper end opening, 12 ... sheath pipe, 13 ... decoration plate, 14 ...
Ceiling slab, 14a: ceiling surface, 15: joint, 20: sprinkler fire extinguishing equipment, 21: piping, 22: sprinkler head, 31: indoor side

Claims (3)

[Claims] 1. A cylindrical container having an open top and bottom, with its lower end opening positioned at the ceiling surface of the building and its opening surface at the upper end opening inclined at an angle of less than 90 degrees with respect to the ceiling surface. A sheath tube embedded in a ceiling slab forming a ceiling and having an inner diameter larger than the outer diameter of the sprinkler fire extinguishing equipment piping is connected to an upper end opening of the container, and the piping is the container of the sheath tube. And the other end is inserted into the container through the sheath and the upper end opening of the container so that one end is disposed in the container. The sprinkler head is mounted in a state where it is housed in the container such that the front end thereof faces the indoor side from the ceiling surface, and the lower end opening of the container has a front end portion of the sprinkler head. Avoid mounting structure sprinkler fire extinguishing equipment, wherein a decorative plate for covering the open surface is detachably mounted from the room side. 2. A pipe joint is attached to one end side of the pipe, and the pipe joint has an opening at an opening on the pipe side substantially equal to an opening at an upper end opening of the container with respect to a ceiling surface. The sprinkler fire extinguishing system according to claim 1, wherein the sprinkler is installed in an inclined state. 3. The installation structure for a sprinkler fire extinguishing system according to claim 1, wherein the ceiling slab is made of a precast material in which the container is buried in advance.