Pipeline fixing structure for open type ceiling

Abstract

To provide a fixing structure in which a general-purpose sprinkler head and a flexible pipe can be used even for an open-type ceiling.SOLUTION: A vertical support member 10 is fixed downward from a ceiling slab S, a flexible pipe 1 is fixed by a mounting member 20 (a pipe holding member 21 and an abutting member 31), and a sprinkler head 2 is mounted on its tip part. The vertical support member 10 includes a body 11, a ceiling fixing part, and a pipe fixing part. The pipe holding member 21 is provided with a holding part 22 for holding the outer periphery of the flexible pipe 1 and a projecting part 23 projecting from the vertical support member 10, and the projecting part 23 has an opening part and a screw member 25. The abutment member 31 includes a planar portion 32, a back-direction rib 33, and a front-direction rib 34. When the respective members are set and the screw member 25 is fastened, the flexible pipe 1 and the sprinkler head 2 are fixed to predetermined positions by the vertical support member 10 and the mounting member 20.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a ceiling piping fixing structure suitable for use in an open ceiling that does not use a ceiling board, known as a louvered ceiling or a skeleton ceiling. [Background technology]

[0002] Generally, when installing fire extinguishing equipment such as sprinklers in a normal ceiling made of ceiling boards, a general-purpose sprinkler head that is widely used can be used. For the piping, a bellows-type flexible pipe is connected to the branch pipe via a T-type joint called a "tee", and a general-purpose sprinkler head is connected to the flexible pipe.

[0003] In this case, the sprinkler head can be fixed to the ceiling board or the ceiling underlayment attached to the back of the ceiling board, so flexible piping can be used to connect the branch pipes to the sprinkler head. Flexible piping is literally flexible, so it is easy to install on site and has excellent workability.

[0004] In addition to conventional ceilings that use ceiling boards, there are also open ceilings that do not use ceiling boards. In the case of open ceilings that do not use ceiling boards, in order to install fire extinguishing equipment such as sprinklers, it is necessary to use special sprinkler heads designed for open ceilings, since sprinkler heads cannot be fixed to the ceiling boards. Furthermore, in order to use sprinkler heads for open ceilings, it is necessary to connect rigid steel pipes, rather than flexible piping, and then connect the sprinkler heads to the steel pipes. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Patent No. 3465123 Summary of the Invention [Problem to be solved by the invention]

[0006] In open ceilings, installing sprinkler heads using rigid steel pipes is less easy to do than installing sprinkler heads using flexible pipes, and requires more work. Furthermore, the need to use special sprinkler heads can make it difficult to secure the necessary parts, and installation costs can increase.

[0007] Patent Document 1 discloses a piping fixing structure developed by the applicants of the present application. The fixing structure disclosed in Patent Document 1 is a structure used in the so-called attic space between the ceiling and ceiling board of a building, and is characterized by a mounting bracket (mounting bracket 17) used to attach flexible piping with attached sprinkler heads to a support pole installed parallel to the ceiling in the attic space. However, the mounting bracket described in Patent Document 1 is a bracket used in a ceiling equipped with a ceiling board, and cannot be used in an open ceiling that does not have a support pole installed horizontally in the ceiling.

[0008] In view of the above, the present invention relates to an improvement in the fixing structure of ceiling piping installed on an open ceiling, and aims to provide a fixing structure that makes it possible to use general-purpose sprinkler heads and flexible piping even on an open ceiling. [Means for solving the problem]

[0009] In order to achieve this purpose, the fixing structure of piping for an open ceiling of the present invention is a fixing structure capable of attaching a sprinkler head to an open ceiling, and is characterized by comprising a vertical support member attached to a ceiling body and extending downward from the ceiling body, a flexible pipe to the tip of which a sprinkler head can be attached, and an attachment member capable of attaching the flexible pipe to the vertical support member so that the sprinkler head is fixed in a predetermined installation position.

[0010] According to the piping fixing structure for an open ceiling of the present invention, even in an open ceiling without a ceiling board, by fixing a vertical support member to a ceiling body such as a ceiling slab and using a mounting member, flexible piping can be attached to the vertical support member and sprinkler heads can be fixed in a predetermined installation position. This makes it possible to use flexible piping without using rigid steel pipes, and to use general-purpose sprinkler heads instead of special sprinkler heads.

[0011] In the fixing structure of piping for an open ceiling of the present invention, the vertical support member comprises a main body extending downward from the ceiling body, a fixing portion fixed to the ceiling body by a fixing member, and a piping fixing portion extending along the axial direction of the fixed flexible piping, and the fixing portion may be offset with respect to the main body so that the installation position of the sprinkler head is located vertically to the fixing position of the fixing member on the ceiling body.

[0012] According to this configuration, when fixing the vertical support members to the ceiling body in an open ceiling, the fixing members only need to be placed on the ceiling body vertically above the installation position of the sprinkler head. The installation position of the sprinkler head is predetermined during the design stage of the fire extinguishing equipment, and since the vertically above position is also predetermined, the fixing positions of the fixing members on the ceiling body can also be determined in advance. This makes it easy to determine the fixing positions of the vertical support members during the design stage of the fire extinguishing equipment, and the fixing positions of the vertical support members can be accurately known during construction.

[0013] In addition, in the fixing structure of piping for an open ceiling of the present invention, the flexible piping has a protective cover with a rib extending in the axial direction at the point where it is fixed to the piping fixing part, and the piping fixing part may be provided with a rib engaging part that engages with the rib.

[0014] According to this configuration, when fixing the flexible pipe to the vertical support member, the rib of the protective cover of the flexible pipe can be engaged with the rib engagement portion of the pipe fixing portion, making it easy to position the flexible pipe.

[0015] In addition, in the fixing structure of piping for open ceilings of the present invention, the mounting member may include a holding portion that holds at least the outer periphery of the flexible piping, a pipe holding member having a pair of protrusions that protrude on the opposite side of the support surface of the vertical support member when the flexible piping is brought close to the support surface of the vertical support member, an abutment member that is arranged between the pair of protrusions and the back side of the vertical support member, and a clamping member that clamps the vertical support member and the flexible piping between the pipe holding member and the abutment member.

[0016] According to this configuration, when fixing the flexible pipe to the vertical support member, the pipe holding member is attached while pressing the flexible pipe against the previously fixed vertical support member, and the abutment member is positioned between the pair of protrusions and the back side of the vertical support member to temporarily fix the flexible pipe, and the flexible pipe can be fixed with the clamping member. Therefore, the installation of the flexible pipe is easy.

[0017] In addition, in the fixing structure of the piping for an open ceiling of the present invention, the pipe holding member has an opening in the protruding portion that opens in the direction in which the vertical support member extends, the clamping member is provided on one of the protruding portions and is a screw member held so that it can move freely forward and backward from the opening toward the vertical support member, the abutment member is formed in the shape of a plate having a flat portion, and the flat portion is inserted into the opening and positioned between a pair of the protruding portions and the vertical support member, when the direction from one of the protruding portions toward the other protruding portion is the longitudinal direction of the flat portion and the vertical support member side is the back side of the flat portion, a back-direction rib protruding on both sides of the side of the vertical support member is formed on one longitudinal side edge of the flat portion, and a front-direction rib formed to extend across at least the side of the vertical support member on the protruding portion side where the screw member is provided is formed on the other longitudinal side edge of the flat portion.

[0018] According to this configuration, the abutment member is lightweight because it is plate-shaped. The rear-facing rib of the abutment member makes it easy to position the abutment member relative to the vertical support member. Furthermore, the front-facing rib of the abutment member prevents the flat surface from bending away from the side of the vertical support member when the abutment member is pressed against the vertical support member by the screw member. [Effects of the Invention]

[0019] According to the present invention, it is possible to use general-purpose sprinkler heads and flexible piping even in open ceilings. Therefore, there is no need to use rigid steel pipes in open ceilings, workability is improved, and because general-purpose sprinkler heads can be used, parts can be easily secured and costs can be reduced. [Brief explanation of the drawings]

[0020] [Figure 1] 1 is an explanatory diagram showing an example of a fixing structure for piping for an open ceiling according to the present invention; [Figure 2] FIG. 4 is an explanatory diagram showing the shape of a vertical support member. [Figure 3] 1A is an explanatory diagram showing a pipe holding member of the mounting member, and FIG. 1B is an explanatory diagram showing a contact member of the mounting member. [Figure 4] FIG. 10 is an explanatory diagram showing a fixing structure for piping for an open ceiling according to a second embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0021] A fixing structure for piping for an open ceiling according to one embodiment of the present invention will be described with reference to Figures 1 to 4. As shown in Figure 1, in this embodiment, a vertical support member 10 is fixed to a ceiling slab S (ceiling body) with anchor bolts 3 and nuts 4 (fixing members), and the vertical support member 10 is fixed in a manner that extends downward from the ceiling slab S.

[0022] In addition, a flexible pipe 1 is fixed to the vertical support member 10 by an attachment member 20 (a pipe holding member 21 and an abutment member 31), and a sprinkler head 2 is attached to the tip of the flexible pipe 1. This flexible pipe 1 is designed to be usable in an open ceiling.

[0023] As shown in Figure 2, the vertical support member 10 is formed by stamping out and bending a plate-shaped member, and includes a main body 11 extending vertically, a ceiling fixing portion 12 provided at the upper end of the main body 11, and a piping fixing portion 13 provided on the main body 11. The main body 11 is formed so as to have an angular U-shape when viewed from the ceiling fixing portion 12 side. The ceiling fixing portion 12 protrudes from the main body 11 in the obverse direction, and has a fixing hole 12a formed in approximately its center. The piping fixing portion 13 is provided by forming a vertical recess in the surface of the main body 11.

[0024] The pipe fixing portion 13 is provided on the support surface where the vertical support member 10 supports the flexible pipe 1. The pipe fixing portion 13 also has two rib engaging portions 13a which are grooves into which positioning ribs 8a provided on the protective cover 8 of the flexible pipe 1, which will be described later, engage.

[0025] The fixing hole 12a provided in the ceiling fixing part 12 is fixed in a fixed position when installed on the ceiling slab S, and is offset from the main body 11 so that the axis extending downward from its center is substantially coincident with the center of the sprinkler head 2 when the flexible pipe 1 is fixed to the pipe fixing part 13.

[0026] The mounting member 20 includes a pipe holding member 21 shown in Fig. 3(A) and a contact member 31 shown in Fig. 3(B). As shown in Fig. 3(A), the pipe holding member 21 includes a holding portion 22 that holds a portion of the outer periphery of the flexible pipe 1, and a protruding portion 23 that protrudes on the side opposite to the support surface of the vertical support member 10 in the state shown in Fig. 1, and the protruding portion 23 has an opening 24 that is open on one side and opens in a rectangular shape.

[0027] Furthermore, one of the protrusions 23 of the pipe holding member 21 is provided with a screw member 25 (clamping member) that is held so as to be able to move forward and backward from the opening 24 toward the vertical support member 10. As shown in Fig. 3(A), this screw member 25 uses a so-called thumb screw, and is a member that clamps and fixes the vertical support member 10 and the flexible pipe 1 using the pipe holding member 21 and the abutment member 31.

[0028] Furthermore, a positioning rib 22a extending in the vertical direction is formed on the holding portion 22 of the pipe holding member 21. This positioning rib 22a, together with a positioning rib 8a provided on a protective cover 8 of the flexible pipe 1 (described later), prevents the flexible pipe 1 from shifting in the circumferential direction when installed. Furthermore, in Fig. 3(A), a pair of protrusions 23 are provided with reinforcing ribs 26 below the openings 24.

[0029] As shown in Fig. 3(B), the abutting member 31 is a member formed by punching out and bending a substantially rectangular plate-like member. The abutting member 31 is formed with a flat portion 32, a back-direction rib 33 formed on one longitudinal side edge of the flat portion 32, and a front-direction rib 34 formed on the other side edge. In addition, a pair of bent portions 35 extending in the front direction are formed on both lateral edges of the flat portion 32. In addition, one of the bent portions 35 has a through-hole 36 formed therein.

[0030] The rear-direction ribs 33 of the abutment member 31 are spaced apart at intervals slightly wider than the width of the vertical support member 10. When the abutment member 31 is attached to the vertical support member 10, the rear-direction ribs 33 protrude from both sides of the vertical support member 10, preventing the abutment member 31 from shifting out of position. Furthermore, as shown in Figure 1, tightening the abutment member 31 with the screw members 25 prevents the vertical support member 10 and the abutment member 31 from shifting out of position.

[0031] 1, the front-direction rib 34 of the abutting member 31 is formed so as to extend across the side of the vertical support member 10 on the side of the protruding portion 23 where the screw member 25 is provided when the abutting member 31 is fastened with the screw member 25. In addition, a central rib 37 formed as a recess with an arc-shaped cross section extending in the longitudinal direction is provided in the center of the flat portion 32 of the abutting member 31. This central rib 37 is also formed so as to extend across the side of the vertical support member 10.

[0032] When the screw member 25 is tightened in the state shown in Figure 1, a force is applied to the surface of the flat portion 32 of the abutting member 31, and a force is applied that bends the abutting member 31 with the side portion on the back side of the vertical support member 10 as a fulcrum. However, since the side edge of the flat portion 32 is provided with the obverse ribs 34, the abutting member 31 can firmly sandwich the vertical support member 10 and the flexible pipe 1 without bending. In addition, the flat portion 32 is also provided with a central rib 37, which further improves the strength of the flat portion 32 and prevents the flat portion 32 from bending.

[0033] In this embodiment, the flexible piping 1 is designed to be usable in an open ceiling. Specifically, the "SPN-SC" manufactured by Showa Rasenkan Seisakusho Co., Ltd. is used. The flexible piping 1 includes a nipple 6, a flexible tube 7, a protective cover 8, and a socket 9.

[0034] The protective cover 8 is formed by press-molding a stainless steel plate. The protective cover 8 is formed to surround the periphery of the flexible tube 7 and is provided with positioning ribs 8a that extend in a direction parallel to the central axis of the flexible tube 7, i.e., in the axial direction of the flexible piping 1. Multiple positioning ribs 8a are formed in parallel along the outer circumferential surface of the protective cover 8 and are provided at locations where the protective cover 8 will be fixed to the piping fixing part 13.

[0035] Since the components of the fixing structure for the piping for an open ceiling of this embodiment are as described above, when attaching the sprinkler head 2 to an open ceiling as shown in Figure 1, the installation is carried out as follows.

[0036] First, anchor bolts 3, which are fixing members, are installed in the ceiling slab S. Since the installation positions of the sprinkler heads 2 are predetermined at the design stage of the building, it is sufficient to install anchor bolts 3 at positions vertical to the installation positions of the sprinkler heads 2. At this time, anchor bolts 5 for holding flexible piping 1 may also be installed at the same time, as shown in Figure 1.

[0037] Next, the vertical support member 10 is installed on the ceiling slab S. Specifically, the vertical support member 10 is installed by passing an anchor bolt 3 through the fixing hole 12a provided in the ceiling fixing portion 12 of the vertical support member 10 and tightening a nut 4, which is a fixing member.

[0038] Next, the flexible pipe 1 is bent into an L shape and attached to the vertical support member 10 with the socket 9 at the tip facing vertically. At this time, the sprinkler head 2 may be attached to the socket 9 of the flexible pipe 1, or the attachment of the sprinkler head 2 may be performed in a later step.

[0039] When attaching the flexible pipe 1 to the vertical support member 10, the pipe holding member 21 is attached to the position of the protective cover 8 of the flexible pipe 1, the flexible pipe 1 is brought close to the vertical support member 10, the protective cover 8 is abutted against the pipe fixing portion 13, and the pair of protrusions 23 of the pipe holding member 21 are made to protrude from the back side of the vertical support member 10.

[0040] In this state, the abutment member 31 is inserted into the opening 24 of the tube holding member 21, and the abutment member 31 is installed between the vertical support member 10 and the protrusion 23. At this time, the screw member 25 is turned in the loosening direction so that the abutment member 31 can be easily inserted into the opening 24.

[0041] When the abutting member 31 is installed in the opening 24, the abutting member 31 is arranged so that the protruding direction of the rear-direction ribs 33 faces the vertical support member 10 and sandwiches the vertical support member 10 between the pair of rear-direction ribs 33. The abutting member 31 is also arranged so that the bent portions 35 provided on both ends of the flat portion 32 are positioned outside the pair of protruding portions 23 of the tube holding member 21. The bent portion 35 provided with the through-hole 36 is also arranged so that it faces the screw member 25.

[0042] From this state, when the screw member 25 is screwed in the tightening direction, the tip of the screw member 25 pushes the flat portion 32 of the abutment member 31 forward, and the holding portion 22 of the pipe holding member 21 is pulled toward the vertical support member 10. As a result, the protective cover 8 of the flexible pipe 1 is clamped by the vertical support member 10, the pipe holding member 21, and the abutment member 31, and the flexible pipe 1 is fixed in place.

[0043] At this time, since the vertical support member 10 has two rib engagement portions 13a provided at the piping fixing portion 13, these rib engagement portions 13a engage with the two positioning ribs 8a of the protective cover 8, and the flexible piping 1 is attached in an accurate position relative to the vertical support member 10.

[0044] The ceiling fixing portion 12 of the vertical support member 10 is offset from the main body 11 so that the axis extending downward from its center is substantially coincident with the center of the sprinkler head 2 when the flexible pipe 1 is fixed to the pipe fixing portion 13, and therefore, by fixing the flexible pipe 1 to the vertical support member 10, the sprinkler head 2 can be accurately installed in the predetermined installation position.

[0045] Furthermore, if you want to fine-tune the vertical position of the sprinkler head 2, you can loosen the screw member 25 to shift the flexible pipe 1 vertically, so you can position the sprinkler head 2 in the correct position and then tighten the screw member 25 to make the adjustment.

[0046] Next, a second embodiment of the fixing structure for piping for an open ceiling of the present invention will be described with reference to Fig. 4. The second embodiment shows an example of a case where it is necessary to install the sprinkler head 2 in a position close to the ceiling slab S. In the second embodiment, components having the same configuration as those in the above embodiment are given the same reference numerals, and detailed description thereof will be omitted.

[0047] Depending on the specifications of the building, it may be necessary to install the sprinkler head 2 close to the ceiling slab S, for example, about 150 mm from the ceiling slab S. In this second embodiment, the vertical support member 10A is shorter than the vertical support member 10 of the above embodiment.

[0048] Furthermore, instead of bending the socket 9 at the tip of the flexible pipe 1 vertically as in the above embodiment, the flexible pipe 1 is installed by extending it parallel to the ceiling slab S. An L-shaped elbow 9a is attached to the socket 9 at the tip of the flexible pipe 1, and the sprinkler head 2 is attached to the elbow 9a. Furthermore, the mounting member 20 uses only the pipe holding member 21 shown in Figure 3(A), and does not use the abutment member 31.

[0049] As shown in Fig. 4, in the second embodiment, a vertical support member 10A is fixed to a ceiling slab S with anchor bolts 3 and nuts 4, and is fixed so as to extend downward from the ceiling slab S. In addition, a flexible pipe 1 is fixed to the vertical support member 10A with a pipe holding member 21.

[0050] In the second embodiment, when installing the flexible pipe 1 on the ceiling slab S, the vertical support member 10A is attached to the ceiling slab S, the pipe holding member 21 is attached to the position of the protective cover 8 of the flexible pipe 1, and the pipe holding member 21 is moved so that the vertical support member 10A fits into the openings 24 provided in the pair of protrusions 23. In this state, the screw member 25 is screwed in to fix the vertical support member 10A and the pipe holding member 21. Furthermore, if necessary, the flexible tube 7 of the flexible pipe 1 is fixed using the anchor bolt 5 and the pipe holding member 5a.

[0051] In this way, in the second embodiment of the fixing structure for piping for open ceilings, the flexible piping 1 can be fixed and the sprinkler head 2 attached to the tip of the flexible piping 1 can be installed in a predetermined position by using a vertical support member 10A that is short in the vertical direction and a pipe holding member 21.

[0052] To fine-tune the position of the sprinkler head 2, the screw member 25 of the pipe holding member 21 can be loosened, the sprinkler head 2 can be moved vertically or in the axial direction of the flexible pipe 1, and the adjustment can be made by tightening the screw member 25 at the specified position. [Explanation of symbols]

[0053] S...Ceiling slab (ceiling body) 1...Flexible piping 2...Sprinkler head 8...Protective cover 8a... Positioning rib 10, 10A...Vertical support member 11...Main unit 13…Piping fixing part 13a...Rib engagement portion 20...Mounting member 21...Pipe holding member 22...Holding part 22a... Positioning rib 23...Protrusion 24...Opening 25...Screw member (clamping member) 31...Abutment member 32...Plane part 33...Rib facing backward 34...Front rib

Claims

1. A fixed structure that allows a sprinkler head to be attached to an open ceiling, a vertical support member attached to the ceiling body and extending downward from the ceiling body; Flexible piping to which a sprinkler head can be attached at the tip, A fixing structure for piping for an open ceiling, characterized in that it comprises an attachment member that can attach the flexible piping to the vertical support member so that the sprinkler head is fixed in a predetermined installation position.

2. The fixing structure for piping for an open ceiling according to claim 1, The vertical support member includes a main body extending downward from the ceiling body, a fixing portion fixed to the ceiling body by a fixing member, and a pipe fixing portion extending along the axial direction of the fixed flexible pipe, A fixing structure for piping for an open ceiling, wherein the fixing portion is offset relative to the main body so that the installation position of the sprinkler head is located vertically to the fixing position of the fixing member on the ceiling body.

3. The fixing structure for piping for an open ceiling according to claim 2, the flexible pipe has a protective cover having a positioning rib extending in the axial direction at a portion where the flexible pipe is fixed to the pipe fixing portion, The piping fixing structure for an open ceiling, wherein the piping fixing portion is provided with a rib engaging portion that engages with the positioning rib.

4. The fixing structure for piping for an open ceiling according to claim 1, The mounting member includes a holding portion that holds at least the outer periphery of the flexible pipe, and a pipe holding member that includes a pair of protruding portions that protrude from the opposite side of the support surface when the flexible pipe is brought close to the support surface of the vertical support member. an abutment member disposed between the pair of protrusions and the rear side of the vertical support member; A fixing structure for piping for an open ceiling, comprising a clamping member for clamping the vertical support member and the flexible piping between the pipe holding member and the abutment member.

5. The fixing structure for piping for an open ceiling according to claim 4, the tube holding member has an opening that opens in the protruding portion in a direction in which the vertical support member extends, the clamping member is a screw member provided on one of the protrusions and held so as to be able to advance and retreat from the opening toward the vertical support member, The abutment member is formed in a plate shape having a flat portion, and the flat portion is inserted into the opening and disposed between the pair of protrusions and the vertical support member. When the direction from one protrusion toward the other protrusion is defined as the longitudinal direction of the flat portion and the vertical support member side is defined as the back side of the flat portion, A fixing structure for piping for an open ceiling, in which a back-direction rib protruding on both sides of the side of the vertical support member is formed on one longitudinal side edge of the flat portion, and a front-direction rib formed to extend across at least the side of the vertical support member on the protruding portion side where the screw member is provided is formed on the other longitudinal side edge of the flat portion.

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