JP2005319278A - Sprinkler device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a sprinkler device which absorbs a position shift by execution errors and reduces an execution load. <P>SOLUTION: This sprinkler device is provided with a cover body to cover an opening part for checking a ceiling and a sprinkler head projecting through a hole set at the center of the cover body and the sprinkler head is connected with a water supply pipe by a piping connection means to make the sprinkler device capable of discharging water. The device is equipped with an inner frame comprising a cylinder inserted into the ceiling check opening part forming a gap against the inner circumference thereof and a flange part projecting outward from the cylinder part, and a ring placed on the backside of the ceiling. The cylinder part is fixed to the ceiling check opening part by cramping the ceiling plate between the flange part and the ring screwed together with the cylinder part and equipped with a plate spring with one end fixed to the cover body. The cover body is made to abut on the surface of the ceiling plate and retained by engaging the other end of the plate spring with the inner circumference. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a sprinkler device that enables inspection of sprinkler pipe joints and the like installed on the back of a ceiling of a building through a ceiling inspection opening.

In order to periodically inspect the sprinklers installed on the ceiling of the building, an inspection port was provided in the ceiling in the vicinity of the sprinkler head. This inspection port requires a size that at least the upper body can enter so that a person can inspect the sprinkler pipe connection joint portion and the like on the back of the ceiling, and a 450 mm square is generally used. This inspection port is usually not covered with a cover.
When installing an inspection port including a cover, it is necessary to take support from a frame such as a beam or a slab in order to support the load of the members that make up the inspection port. . As a measure to reduce the burden on construction, a device that hangs the hanger bracket for hanging the outer frame of the member that constitutes the inspection port has been proposed, but it is connected to the housing as a component that supports the inspection port frame that is a component member. The field edge fixed to the suspended metal fitting has to be arranged along the inspection port frame installation position, which has been a large construction load (for example, see Patent Document 1).
JP 2000-34829 A (page 1-5, FIG. 3)

  In general, the inspection port installed on the ceiling for sprinklers is provided close to the sprinkler head, but the inspector is able to visually check and inspect the sprinkler pipe connection joint and sprinkler head as inspection points. When it is required to put at least the upper body from the opening of the inspection port to the back of the ceiling, and the installation position of the inspection port and the sprinkler head is separated, the burden on the body is particularly large. The opening of the inspection port needs to be large enough to accommodate at least the upper body of the inspector. In order to secure this large opening, it is necessary to increase the strength of the member constituting the inspection port, so that the burden of this construction is also large.

In the prior art, the inspection opening of the ceiling is formed by notching the ceiling plate at the installation position, and the outer frame of the inspection opening is engaged by the engaging piece of the hanger fitting for hanging the outer frame, Further, an inner frame is provided on the inner side of the outer frame, and an inspection port cover made of the same ceiling material is attached on the inner side of the inner frame.
In this structure, the opening and the outer frame, the outer frame and the inner frame, and the inner frame and the inspection port cover are attached in a state in which only a gap necessary for attachment and rotation is secured.
If this gap is small, for example, if the sprinkler head is not connected to the ceiling inspection port, but the sprinkler protrudes from the ceiling inspection port cover, the sprinkler head is positioned between the sprinkler and the inspection port. There is a possibility that the deviation (construction error) cannot be absorbed.

  In the prior art, it is fixed to the field edge that is supported via the hanging metal fittings from the concrete surface above the ceiling, which is the building frame. It took a lot of work.

  Therefore, in the present invention, in order to solve the above-described problems, a positional burden (construction error) generated between the sprinkler and the inspection port is absorbed to reduce the construction burden. It is another object of the present invention to provide a sprinkler device that does not require special support for installation from the building frame.

  According to the first aspect of the present invention, the cover main body is in contact with the periphery of the ceiling inspection opening that is opened in the ceiling plate, and projects from a hole provided in the center of the cover main body in plan view. A sprinkler head that connects the sprinkler head and the water supply pipe by a pipe connection joint so that the water supplied from the water supply pipe can be discharged from the sprinkler head. An inner frame composed of a cylindrical portion that is inserted with a predetermined gap between the periphery and a flange that projects outward from the cylindrical portion and contacts the periphery of the ceiling inspection opening; and A ring arranged on the back of the ceiling, and by screwing the ring with the outer peripheral surface of the cylinder part and sandwiching a ceiling plate between the flange part, the cylinder part becomes the ceiling inspection opening. A plate spring having one end fixed to the cover body, and by engaging the other end of the plate spring with the inner periphery of the tube portion, the periphery of the cover body is The sprinkler device is also characterized in that it is held in contact with the outer surface of the ceiling plate.

As a result, the gap provided by the difference in diameter between the outer diameter of the cylinder portion of the inner frame and the opening diameter of the ceiling inspection opening can absorb a positional shift due to a construction error between the ceiling inspection opening and the sprinkler head. It becomes possible to provide an opening for ceiling inspection immediately below the pipe connection joint.
For this reason, since the inspector can inspect from the opening for ceiling inspection directly under the sprinkler pipe connection joint, the inspector can visually inspect from the room or check by inserting a hand, and the burden on the body is reduced. Moreover, since the cover main body is fixed to the inner frame by the first leaf spring, it is easy to attach and detach, and further facilitate inspection.
Furthermore, in the construction, after placing the inner frame in the ceiling inspection opening, the cylindrical portion is clamped and fixed to the ceiling plate by screwing with a ring, and the convex portion of the leaf spring fixed to the cover body is fixed to the cylindrical portion. It is a simple structure that only fits into the recess, and it is not necessary to take dedicated support from the building frame and can be easily constructed.

  According to a second aspect of the present invention, the cover main body is in contact with the periphery of the ceiling inspection opening that is opened in the ceiling plate, and projects from a hole provided in the center of the cover main body in plan view. A sprinkler head, wherein the sprinkler head and the water supply pipe are connected by a pipe connection joint, and the water supplied from the water supply pipe can be discharged from the sprinkler head. A holding member composed of a holding bracket that is inserted with a predetermined gap between the inner periphery of the ceiling inspection opening and a holding portion that protrudes outward from the holding bracket, and is fixed to the ceiling. And a receiving member configured to include a convex member in plan view that protrudes from the receiving portion toward the opening for inspection of the ceiling. The convex portion of the receiving member and the holding portion A leaf spring fixed to either the holding portion or the convex portion, the leaf spring being fixed to the holding member. The sprinkler device is characterized in that the periphery of the cover main body is held in contact with the surface of the ceiling plate by urging the ceiling back side.

Thereby, due to the difference between the distance between the convex portion of the first receiving member and the center of the opening for ceiling inspection, and the distance between the holding metal fitting on the ceiling fixing surface of the first receiving member and the center of the cover body, The gap generated between the convex part of the first receiving member and the holding bracket can absorb the misalignment due to the construction error between the ceiling inspection opening and the sprinkler head, so the ceiling inspection opening is directly under the sprinkler pipe connection joint. Can be provided.
And since the inspector can inspect from the ceiling inspection opening directly under the sprinkler pipe connection joint, the inspector can visually inspect from the room or insert by hand, and the burden on the body is reduced.
Further, by rotating the cover body, the first holding member can be moved to a position where it is held by the first receiving member via the second leaf spring and a position where it is not held. It can be removed from the ceiling inspection opening. For this reason, the attachment / detachment operation of the sprinkler inspection port cover is easy, and the inspection is further facilitated. Moreover, it is not necessary to take a dedicated support from the building frame and can be easily constructed.

  According to a third aspect of the present invention, the cover main body is in contact with the periphery of the ceiling inspection opening that is opened in the ceiling plate, and projects from a hole provided in the center of the cover main body in plan view. In the sprinkler device, the sprinkler head is connected to the water supply pipe by a pipe connection joint, and the water supplied from the water supply pipe can be discharged from the sprinkler head. And a plurality of fixing members composed of a fixing bracket erected from the reinforcing material on the back side of the ceiling, and a plurality of coil springs connecting the cover body and the fixing bracket, the coil spring being the cover body The sprinkler apparatus is characterized in that the periphery of the cover body is held in contact with the surface of the ceiling plate by urging the ceiling back side It was.

As a result, it is possible to absorb misalignment due to construction errors between the ceiling inspection opening and the sprinkler head due to the difference in diameter between the opening diameter of the ceiling inspection opening and the outer diameter of the cover body. It is possible to provide a ceiling inspection opening immediately below the joint.
And since the inspector can inspect from the ceiling inspection opening directly under the sprinkler pipe connection joint, the inspector can visually inspect from the room or insert by hand, and the burden on the body is reduced.
Also, pulling the cover body downward allows visual confirmation of the sprinkler pipe connection joint on the back of the ceiling from the ceiling inspection opening. When the pulling is stopped, the cover body closes the ceiling inspection opening by the coil spring. Return to position. In addition, as described above, since the inspection can be performed simply by pulling the cover main body downward, it is not necessary to temporarily place the cover main body removed at the time of inspection on another place such as the floor, which makes the inspection easier. ing.
Furthermore, in the construction, the first fixing member is fixed to the ceiling inspection opening, and the first fixing member and the cover body are simply fixed by a coil spring. There is no need to take it and it can be easily constructed.

  According to a fourth aspect of the present invention, the cover main body is in contact with the periphery of the ceiling inspection opening that is opened in the ceiling plate, and projects from a hole provided in the center of the cover main body in plan view. A sprinkler head that connects the sprinkler head and the water supply pipe by a pipe connection joint, and in a sprinkler device that allows water supplied from the water supply pipe to be discharged from the sprinkler head, is fixed to the pipe connection joint, A receiving member having a plurality of cutouts at the tip of the ceiling inspection opening in the ceiling inspection opening in plan view, a holding fixture fixed to the cover body and standing on the ceiling back side, and a tip of the holding fitting A holding member composed of a flange projecting from the portion, and engaging the collar of the holding member with the notch to form the cover book And a leaf spring fixed to either the receiving member or the retaining member, and the urging force of the leaf spring surrounds the cover body with the surface of the ceiling plate. The sprinkler device is characterized by being held in contact with each other.

As a result, it is possible to absorb misalignment due to construction errors between the ceiling inspection opening and the sprinkler head due to the difference in diameter between the opening diameter of the ceiling inspection opening and the outer diameter of the cover body. It is possible to provide a ceiling inspection opening immediately below the joint.
And since the inspector can inspect from the ceiling inspection opening directly under the sprinkler pipe connection joint, the inspector can visually inspect from the room or insert by hand, and the burden on the body is reduced.
Further, by rotating the cover body, the second holding member can be moved to a position where it is held by the second receiving member via the third leaf spring and a position where it is not held. It can be removed from the ceiling inspection opening. For this reason, it is easy to attach and detach the cover main body, and it is easier to inspect.
Further, in the construction, the second receiving member is fixed to the sprinkler pipe connection joint, the cover body is rotated in close contact with the surface of the ceiling plate, and the second holding member is moved to the third plate in the second receiving member. It is a simple structure that only holds it through a spring, and it is not necessary to take a dedicated support from the building frame and can be easily constructed. Moreover, since it is not necessary to fix the member to the ceiling only by opening an opening in the ceiling, it is not necessary for the ceiling to support the weight of the cover main body, so that the construction is further facilitated and the selection of the ceiling material becomes free.

  According to a fifth aspect of the present invention, the cover main body is in contact with the periphery of the ceiling inspection opening that is opened in the ceiling plate, and projects from a hole provided in the center of the cover main body in plan view. A sprinkler head and a fixing part for fixing the pipe connection joint to the building frame arranged on the back side of the ceiling. The sprinkler head and the water supply pipe are connected by the pipe connection joint, and the water supplied from the water supply pipe is supplied. In the sprinkler device capable of discharging water from the sprinkler head, a fixing member fixed to the fixing portion and protruding in a plan view on the back side of the ceiling in the ceiling inspection opening, and a plurality of coil springs connecting the fixing member and the cover body And the coil spring urges the cover body toward the back of the ceiling so that the periphery of the cover body is placed on the surface of the ceiling plate. Was sprinkler apparatus characterized by holding in contact with.

As a result, it is possible to absorb misalignment due to construction errors between the ceiling inspection opening and the sprinkler head due to the difference in diameter between the opening diameter of the ceiling inspection opening and the outer diameter of the cover body. It is possible to provide a ceiling inspection opening immediately below the joint.
For this reason, since the inspector can inspect from the opening for ceiling inspection directly under the sprinkler pipe connection joint, the inspector can visually inspect from the room or check by inserting a hand, and the burden on the body is reduced.
Further, by pulling the cover body downward, the back of the ceiling can be visually confirmed from the opening for ceiling inspection. When the pulling is stopped, the ceiling inspection opening is closed by the coil spring. In addition, as described above, since the inspection can be performed simply by pulling the cover main body downward, it is not necessary to temporarily place the cover main body removed at the time of inspection on another place such as the floor, which makes the inspection easier. ing.
Furthermore, in the construction, the second fixing member is fixed to the fixing portion, and the second fixing member and the cover body are simply fixed by a coil spring, and it is necessary to take dedicated support from the building frame. And can be easily constructed. Moreover, since it is not necessary to fix the member to the ceiling only by opening an opening in the ceiling, it is not necessary for the ceiling to support the weight of the cover main body, so that the construction is further facilitated and the selection of the ceiling material becomes free.

  According to a sixth aspect of the present invention, the cover main body is in contact with the periphery of the ceiling inspection opening opened in the ceiling plate, and projects from a hole provided in the center of the cover main body in plan view. In the sprinkler device that connects the sprinkler head and the water supply pipe by a pipe connection joint so that the water supplied from the water supply pipe can be discharged from the sprinkler head, the cover body is fixed to the center in plan view. A cylindrical first connecting member that has a screw at least in either the outer peripheral portion or the inner peripheral portion and can be inserted through the sprinkler head; and at least the outer periphery capable of screwing with the screw of the first connecting member A cylindrical second connection member that has a screw in either the inner part or the inner peripheral part and is fixed to the pipe connection joint. By the first connecting member is screwed by the screw, and a sprinkler apparatus characterized by holding the periphery of the cover body in contact with the surface of the ceiling board.

As a result, it is possible to absorb misalignment due to construction errors between the ceiling inspection opening and the sprinkler head due to the difference in diameter between the opening diameter of the ceiling inspection opening and the outer diameter of the cover body. It is possible to provide a ceiling inspection opening immediately below the joint.
For this reason, since the inspector can inspect from the opening for ceiling inspection directly under the sprinkler pipe connection joint, the inspector can visually inspect from the room or check by inserting a hand, and the burden on the body is reduced.
Further, by rotating the cover body, the cover body can be attached and detached by screwing the screws of the first connecting member and the second connecting member. For this reason, it is easy to attach and detach the cover main body, and it is easier to inspect.
Furthermore, in the construction, after fixing the second connection member to the sprinkler pipe connection joint, the screw of the first connection member fixed to the cover body is screwed and fixed to the screw of the second connection member. It has a simple structure and does not require special support from the building frame, and can be easily constructed. Moreover, since it is not necessary to fix the member to the ceiling only by opening an opening in the ceiling, it is not necessary for the ceiling to support the weight of the cover main body, so that the construction is further facilitated and the selection of the ceiling material becomes free.

According to the present invention, since it is possible to absorb a positional shift due to a construction error between the ceiling inspection opening and the sprinkler head, it is possible to provide the ceiling inspection opening directly below the sprinkler pipe connection joint. As a result, the inspector can inspect from the ceiling inspection opening directly under the sprinkler pipe connection joint, so that the inspector can visually inspect from the room or insert the hand, and the burden on the inspector's body is reduced.
Furthermore, since it is a simple structure, it is not necessary to take dedicated support from the building frame, and it can be easily constructed.

A first embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a front view with a sprinkler attached, and FIG. 2 is an EE view from the ceiling.
In this sprinkler inspection port cover, the ceiling plate 2 is sandwiched and fixed by the cylindrical inner frame 6 having the cylindrical portion 6a and the flange portion 7 and the ring 4, and the cover main body 14 to which the first leaf spring 10 is fixed is fixed. The sprinkler head 8 is fixed by being fitted from the indoor side as desired from the hole 17.
In FIG. 1, a sprinkler head joint 8 is connected to a sprinkler pipe joint 1 fixed to a building frame in a watertight manner by screws. In addition, the sprinkler pipe connection joint 1 is provided with a flexible resin water supply pipe 100 for supplying water via a joint 101 and water to another sprinkler pipe connection joint (not shown). A flexible resin water supply pipe 102 for supply is connected through a joint 103 in a watertight manner. The ceiling plate 2 immediately below the sprinkler pipe connection joint 1 is provided with a circular ceiling inspection opening 3, and an inspection port cover is provided here. This structure will be described below.

  The inner frame 6 has a cylindrical shape having a cylindrical portion 6a and a circular flange portion 7, and has a male screw 5 at one end of the outer peripheral portion of the cylindrical portion 6a and a concave portion 18 at the inner peripheral portion. Further, as shown in FIG. 2, the ring 4 has an internal thread 9 on the inner surface, the outer periphery is circular, and is partially cut off at two positions symmetrical to the center. Is smaller than the diameter of the circular ceiling inspection opening 3. For this reason, the ring 4 can be inserted into the ceiling from the indoor side of the ceiling inspection opening 3.

The inner frame 6 and the ring 4 are fixed by screwing a male screw 5 and a female screw 9 so as to sandwich the ceiling plate 2 at a ceiling inspection opening 3 provided in the ceiling plate 2. At this time, the outer diameter of the cylindrical portion 6a of the inner frame 6 is smaller than the diameter of the ceiling inspection opening 3, and there is a gap 20 due to the difference in diameter. Moreover, the outer diameter of the collar part 7 and the outer diameter of the ring 4 are substantially the same, and the diameter difference with the above-mentioned cylinder part outer diameter is twice the diameter difference with the diameter of the opening part 3 for ceiling inspection. Yes. Therefore, the inner frame can be shifted by the distance of the gap 20 with respect to the ceiling inspection opening 3.
The cover main body 14 is made of aluminum and has a substantially circular shape, and has an edge 21 on the outer peripheral portion and a hole 17 in the center in plan view. Two bolts 15 are welded and fixed at a position equidistant from the center of the cover body 14. The first leaf spring 10 having a mounting hole is inserted into the bolt 15 and the nut 16 is tightened to fix the first leaf spring 10 to the cover body 14.

Here, the shape of the first leaf spring 10 will be described. The first leaf spring 10 has a flat portion 11 having the above-described mounting holes and an inclined portion 12 having a convex portion 13, and one end of the inclined portion 12 is bent with respect to the flat portion 11. It is connected. A convex portion 13 is located near the other end of the inclined portion 12.
The cover main body 14 having the first leaf spring 10 is arranged on the indoor side (downward in FIG. 1) while the sprinkler head 8 is desired in the central hole 17 after the inner frame 6 is fixed to the ceiling plate 2. More attached. At the time of attachment, the convex portion 13 of the first leaf spring 10 is fixed in the concave portion 18 of the cylindrical portion 6a so as not to fall. In this state, the edge 21 is in close contact with the ceiling board 2. At this time, if the sprinkler head 8 and the ceiling inspection opening 3 are displaced due to construction errors or the like, the fixing position of the inner frame 6 may be shifted using the gap 20 according to the displacement. it can.
Then, after the cover body 14 is fitted and fixed, the sprinkler head cover 19 is attached to the sprinkler head 8 from the indoor side.

  With such a structure, the cover main body 14, the inner frame 6, and the ring 4 can be attached to the ceiling inspection opening 3 of the ceiling plate 2 without using any special support, and dedicated support from the building frame This eliminates the need to reduce the construction load. Further, even if a positional deviation occurs due to a construction error between the attachment position of the sprinkler head 8 and the attachment position of the ceiling inspection opening 3 which is the opening of the ceiling plate 2 as described above, the positional deviation is absorbed. be able to. With the above-described structure, the sprinkler inspection port cover can be provided directly below the sprinkler pipe connection joint 1, and can be visually checked from inside the room or checked by hand insertion. The cover body 14 may be pulled downward and pushed upward, and the load during construction or inspection can be reduced.

  In the present embodiment, the cover body 14 and the first leaf spring 10 are fixed by tightening the nut 16 to the welded bolt 15. This is used to facilitate replacement of only the first leaf spring 10 or to improve assembly when the first leaf spring 10 is deformed for some reason. Although it is a structure, the present invention is not limited to this fixing means, and for example, the first leaf spring 10 may be fixed with one touch, or may be welded. Even if the cover body 14 is made of resin instead of aluminum and the first leaf spring 10 is insert-molded, it is suitable for mass production.

  If this inspection port cover mounting structure is used, the sprinkler can be retrofitted without removing the ceiling. A specific procedure in this regard will be described with reference to FIGS. 13 and 14 are schematic views in the middle of work when the sprinkler is attached to the ceiling board 2.

  First, in FIG. 13, in order to provide the circular ceiling inspection opening 3 at the sprinkler installation position, the existing ceiling plate 2 is opened. Next, a flexible resin water supply pipe 151 for supplying water to the sprinkler from the ceiling inspection opening 3 and a flexible resin water supply pipe 152 for supplying water downstream of the springler are provided. Insert into the ceiling space 154. The water supply pipe 151 is routed through the ceiling space 154 to the nearest existing water supply pipe. At this time, depending on the layout of the building, it is necessary to pass through the space between the wall plates and the space under the floor. At that time, the water supply pipe 151 is piped using an inspection port provided on another ceiling, an openable closet ceiling portion, or an underfloor inspection port. And the existing water supply pipe is branched and the water supply pipe 151 is connected. Similarly, the water supply pipe 152 is inserted from the ceiling inspection opening 3 and connected to a water-using device such as a toilet installed in the vicinity. At this time, if necessary, the space between the wall plates and the space under the floor are piped by using an inspection port provided in another ceiling, a push-in ceiling that can be opened or closed, or an under-floor inspection port. Thereafter, the insertion source portions of the water supply pipes 151 and 152 are cut, and the joints 101 and 103 are connected.

  Next, in FIG. 14, the fourth fixing member 153 is fixed to the beam 157 with screws. Thereafter, the sprinkler pipe connection joint 1 is fixed to one stage of the mounting holes 156 having a plurality of stages by screws 155. The selection of the attachment hole 156 to be attached at this time is determined by the distance between the fixing position of the fourth fixing member 153 and the ceiling plate 2. This is because the relative position between the sprinkler head 8 connected to the sprinkler connection pipe joint 1 and the ceiling plate 2 is determined in advance, but the mounting position of the fourth fixing member 153 is determined by the position of the beam in the field. Therefore, it is because the height of the sprinkler pipe connection joint 1 must be adjusted. Then, the joints 101 and 103 connected to the water supply pipe are connected to the sprinkler pipe connection joint 1. FIG. 14 shows this state, and thereafter, after the ring 4 and the inner frame 6 are fixed, the sprinkler head 8, the cover body 14, and the sprinkler head cover 19 are connected in the same manner as described above. By doing in this way, the gap between the fixed position of the sprinkler head 8 caused by the fixed position of the sprinkler pipe connection joint 1 and the ceiling inspection opening 3 can be absorbed by the gap 20 as in the case described above. .

  By applying such a structure to the retrofit of a sprinkler to an existing building, it is not necessary to provide a ceiling inspection port that had to be provided in the vicinity of the sprinkler installation position in the past, and the construction cost can be reduced. . Moreover, the problem of deteriorating the aesthetics by providing a new inspection port on the nearby ceiling is eliminated.

A second embodiment of the present invention will be described with reference to FIGS. 3 is a front view with the sprinkler attached, FIG. 4 is an FF view seen from the ceiling, and FIG. 5 is an XX cross-sectional view of the inner convex portion 30 of the first receiving member 22.
In this sprinkler inspection port cover, two first receiving members 22 having convex portions 30 to which the second leaf springs 25 are fixed are fixed to the ceiling plate 2 with screws 23 with the convex portions 30 inside. The cover main body 14 to which the holding member 24 is fixed is fixed by inserting and rotating the sprinkler head 8 from the indoor side so that the sprinkler head 8 is desired from the hole 17.
In FIG. 3, a sprinkler head joint 8 is connected to a sprinkler pipe connection joint 1 fixed to a building frame in a watertight manner by screws. In addition, the sprinkler pipe connection joint 1 is provided with a flexible resin water supply pipe 100 for supplying water via a joint 101 and water to another sprinkler pipe connection joint (not shown). A flexible resin water supply pipe 102 for supply is connected through a joint 103 in a watertight manner. The ceiling plate 2 immediately below the sprinkler pipe connection joint 1 is provided with a circular ceiling inspection opening 3, and an inspection port cover is provided here. This structure will be described below.

As shown in FIG. 4, the first receiving member 22 is rectangular and has a receiving portion 22 a having a notch having a diameter substantially the same as the opening diameter of the ceiling inspection opening 3 on one side of the long side, and the notch. The projection 30 is formed at the center of the projection, and a groove 30a is provided at the center connected to the projection 30 and the projection 30. Further, as shown in FIG. 5, a second leaf spring 25 having a mounting hole is fixed to the plane of the groove 30 a by a screw 29.
Here, the shape of the second leaf spring 25 will be described. The second leaf spring 25 has a flat surface portion 25a having a mounting hole and an inclined portion 25b folded back in the center, and one end of the inclined portion 25b is bent in the flat surface portion 25a. It is connected.
The first receiving member 22 is arranged on the back side of the ceiling inspection opening 3 provided on the ceiling plate 2 such that the convex portion 30 is substantially perpendicular to the connection direction of the water supply pipes 100 and 102. It is fixed by screws 23 from the indoor side (lower side in FIG. 3). As a result, it is possible to take as much space as possible for the inspection work of the connecting portion with the water supply pipes 100 and 102.

Here, the distance between the end face of the convex portion 30 of the first receiving member 22 and the center of the ceiling inspection opening 3 is the distance between the holding metal 26 and the center of the cover body 14 on the ceiling fixing surface of the first receiving member 22. It has a gap 53 due to the difference in distance. For this reason, when a positional shift occurs due to a construction error between the sprinkler head 8 and the ceiling inspection opening 3, the cover main body 14 can be shifted from the ceiling inspection opening 3 by the distance of the gap 53.
The cover main body 14 is made of aluminum and has a substantially circular shape, and has an edge 21 on the outer peripheral portion and a hole 17 in the center in plan view. Two bolts 15 are welded and fixed at a position equidistant from the center of the cover body 14. The first holding member 24 having a mounting hole is inserted into the bolt 15 and the nut 16 is tightened to fix the first holding member 24 to the cover body 14.

Here, the first holding member 24 will be described. The first holding member 24 includes a plane portion having a mounting hole, the above-described holding metal fitting 26 formed of a vertical surface bent at a right angle from the plane portion and having a mounting hole at the upper end, and a vertical surface having a mounting elongated hole. The holding part 27 has a flat part bent at a right angle from the vertical plane, and the holding fitting 26 and the holding part 27 are fixed by screws 28.
The cover main body 14 having the first holding member 24 is formed on the indoor side while the sprinkler head 8 is desired in the central hole 17 after the first receiving member 22 is fixed to the back side of the ceiling of the ceiling plate 2. It is attached from (lower side of FIG. 3). At the time of attachment, first, the first holding member 24 is set in a direction that does not interfere with the convex portion 30 of the first receiving member 22 and then pushed in from the indoor side, and is rotated counterclockwise as viewed from the inside of the room. Is held by the second leaf spring 25 and fixed so as not to fall. Since the first holding member 24 is fixed in a state of being biased to the back of the ceiling by the second leaf spring 25, the cover main body 14 to which the first holding member 24 is fixed closely contacts the surface of the ceiling plate.
As the rotation is continued, one end of the holding portion 27 abuts against the vertical surface 30b of the convex portion 30 so that it does not rotate any further.
And after fixing the cover main body 14, the sprinkler head cover 19 is attached to the sprinkler head 8 from the indoor side.

With such a structure, the cover main body 14 and the first receiving member 22 can be attached to the ceiling inspection opening 3 of the ceiling plate 2 without using any special support, and dedicated support from the building frame This eliminates the need to reduce the construction load. Further, as described above, even when a positional shift occurs due to a construction error between the mounting position of the sprinkler head 8 and the mounting position of the ceiling inspection opening 3 that is the opening of the ceiling plate 2, this positional shift is absorbed. be able to.
With the above-described mounting structure, the sprinkler inspection port cover can be provided directly below the sprinkler pipe connection joint 1, which can be visually inspected from inside the room and checked by hand insertion, reducing the load during construction and inspection. Can be small.
Further, by rotating the cover body 14, the first holding member 24 can be moved to a position where it is held by the first receiving member 22 via the second leaf spring 25 and a position where it is not held. The cover body 14 can be attached and detached from the ceiling inspection opening 3. For this reason, the attachment / detachment operation of the sprinkler inspection port cover is easy, and the inspection is further facilitated.

In the present embodiment, the cover body 14 and the first holding member 24 are fixed by tightening the nut 16 to the welded bolt 15. This is a structure for improving assemblability, but the present invention is not limited to this fixing means. For example, the first holding member 24 can be fixed with one touch or welded. May be. Further, the cover body 14 is made of resin instead of aluminum, and is suitable for mass production even if the first holding member 24 is insert-molded. Further, the first holding member 24 has a structure in which the holding metal fitting 26 and the holding portion 27 are fixed with screws, but this is a structure for enabling adjustment of the mounting height, and is limited to this structure. The holding metal fitting 26 and the holding portion 27 may be integrated.
Further, in the embodiment of the present invention, two first holding members 24 and two first receiving members 22 are used, but the convex portion 30 and the first holding member 24 of the first receiving member 22 There may be a plurality of contact points. For example, the two first receiving members 22 may be integrated to form the first receiving member 22 having the two convex portions 30. Similarly, the two first holding members 24 may be integrated. If it does in this way, between the cover main body 14 and the 1st holding member 24 can be fixed with the one nut 16, and the effort of fixing can be reduced. Moreover, the trouble of adjusting the fixed position to the ceiling board 2 between the two 1st receiving members 22 can be reduced.
Further, the leaf spring 25 is provided on the first receiving member 22 as means for tightly fixing the cover main body 14 to the ceiling plate 2, but the present invention is not limited to this, for example, the first holding member 24 is provided with the first holding member 24. A similar effect can be obtained by attaching a leaf spring to the first receiving member 22 and urging the first holding member 24 toward the back of the ceiling.

A third embodiment of the present invention will be described with reference to FIGS. FIG. 6 is a front view with a sprinkler attached, and FIG. 7 is a GG view seen from the ceiling.
The sprinkler inspection port cover is fixed by fixing a first fixing member 34 composed of a reinforcing tree 31 and a fixing bracket 33 fixed to the reinforcing tree 31 with a screw 32 to the ceiling board 2 with a screw 23. The cover main body 14 to which the metal fitting 36 is fixed is aligned and fixed from the indoor side by the first spring 35 so that the sprinkler head 8 is desired from the hole 17.
In FIG. 6, a sprinkler head joint 8 is watertightly connected to the sprinkler pipe joint 1 fixed to the building frame by screws. In addition, the sprinkler pipe connection joint 1 is provided with a flexible resin water supply pipe 100 for supplying water via a joint 101 and water to another sprinkler pipe connection joint (not shown). A flexible resin water supply pipe 102 for supply is connected through a joint 103 in a watertight manner. The ceiling plate 2 immediately below the sprinkler pipe connection joint 1 is provided with a circular ceiling inspection opening 3, and an inspection port cover is provided here. This structure will be described below.

The reinforcing tree 31 of the first fixing member 34 is rectangular as shown in FIG. 7, and has a notch having the same diameter as the opening diameter of the ceiling inspection opening 3 on one side of the long side. Further, as shown in FIG. 6, the fixing bracket 33 has a flat portion having a mounting hole and a vertical surface bent at a right angle from the flat portion and having a hook hole at the upper end. Fixed to the center of the side.
The first fixing member 34 has the above-described notch portion of the reinforcing wood 31 aligned with the ceiling inspection opening 3 provided in the ceiling plate 2, and the fixing bracket 33 is connected to the connection direction of the water supply pipes 100 and 102. It arrange | positions so that it may become substantially right angle, and is fixed with the screw | thread 23 from the indoor side (lower part of FIG. 6). This makes it possible to take as much space as possible for the inspection work of the sprinkler pipe connection part.

One end of the first spring 35 has a straight portion between the spring portion and the circular bent hook portion, and is attached to the fixing bracket 33 of the first fixing member 34 by this straight portion. In this case, the spring portion and the fixing bracket 33 do not interfere with each other. On the other end side, a hook portion bent in a circular shape is directly connected to the spring portion. The first spring 35 is a coil spring.
The cover body 14 is substantially aluminum and has an edge 21 on the outer periphery and a hole 17 in the center in plan view. Two bolts 15 are welded and fixed at a position equidistant from the center of the cover body 14. A fixing bracket 36 having a mounting hole is inserted into the bolt 15 and the nut 16 is tightened to fix the fixing bracket 36 to the cover body 14.

Here, the fixture 36 will be described. The fixing bracket 36 has a flat surface portion having the above-described mounting holes and a vertical surface bent at a right angle from the flat surface portion and having a hook hole at the upper end.
After the first fixing member 34 is fixed to the back side of the ceiling plate 2, the cover main body 14 to which the fixing metal fitting 36 is fixed is desired to have the sprinkler head 8 in the center hole 17 while the indoor side (see FIG. (Below 6). At the time of attachment, one end side having a linear portion between the spring portion of the first spring 35 and the hook portion that is bent in a circle is inserted into the hook hole of the fixing bracket 33 of the first fixing member 34, and The other end side where the hook part is directly connected to the spring part is hooked and fixed to the hook hole of the fixing fitting 36. In this state, the edge 21 is in close contact with the ceiling board 2. As described above, the hook portions at both ends of the first spring 35 have a detachable structure that is hooked and fixed to the hook holes of the fixing bracket 33 and the fixing bracket 36.
Since the cover body 14 is fixed in a state of being biased toward the back of the ceiling by the first spring 35, the cover body 14 is in close contact with the surface of the ceiling plate 2.
For this reason, the installation work is easy, and in the inspection, the cover main body 14 can be inspected while being pulled downward in the room, and the first spring 35 can be easily removed from the fixing bracket 36 in this state. And inspection work becomes easy.
Further, at this time, the outer diameter of the cover main body 14 is formed larger than the opening diameter of the ceiling inspection opening 3 and has a cover allowance due to the difference between the diameters. The sprinkler head 8 and the ceiling inspection opening 3 Even if there is a deviation due to construction errors, the ceiling cannot be seen from the room as long as it is within the cover allowance.
And after fixing the cover main body 14, the sprinkler head cover 19 is attached to the sprinkler head 8 from the indoor side.

With such a structure, the cover main body 14 and the first fixing member 34 can be attached to the ceiling inspection opening 3 of the ceiling plate 2 without using any special support, and dedicated support from the building frame This eliminates the need to reduce the construction load. In addition, even if a positional shift occurs due to a construction error between the mounting position of the sprinkler head 8 and the mounting position of the ceiling inspection opening 3 which is the opening of the ceiling board 2 as described above, 14 can be absorbed by the cover allowance due to the difference in diameter between the outer diameter of 14 and the opening diameter of the opening 3 for ceiling inspection.
With the above-described mounting structure, a sprinkler inspection port cover can be provided immediately below the sprinkler pipe connection joint 1, which can be visually inspected from inside the room and checked by hand insertion. Can be reduced.
Further, by pulling the cover main body 14 downward, the sprinkler pipe connection joint 1 on the back of the ceiling can be visually confirmed from the ceiling inspection opening 3. When the pulling is stopped, the cover main body 14 is moved by the first spring 35. Return to the position to close the ceiling inspection opening 3. In addition, since the inspection can be performed simply by pulling the cover body 14 downward as described above, it is not necessary to temporarily place the cover body 14 removed at the time of inspection on another place such as a floor. It has become easier.

In the present embodiment, the cover main body 14 and the fixing bracket 36 are fixed by fastening the nut 16 to the welded bolt 15. This is a structure for facilitating replacement of only the fixing bracket 36 when the fixing bracket 36 is deformed for some reason, or for improving the assemblability. It is not limited to the means, and for example, the fixing bracket 36 may be fixed with one touch, or may be welded. Further, the cover body 14 is not made of aluminum, but is made of resin and is suitable for mass production even if the fixing bracket 36 is insert-molded. Further, the first fixing member 34 is formed by fixing the reinforcing wood 31 and the fixing bracket 33 with screws 32. This is not limited to this structure as long as it can withstand the tension of the first spring 35.
In the embodiment of the present invention, two fixing brackets 36 and two first fixing members 34 are used. For example, two first fixing members 34 are integrated to have two fixing brackets 33. The first fixing member 34 may be used. Similarly, two fixing brackets 36 may be integrated. If it does in this way, between the cover main body 14 and the fixing metal fitting 36 can be fixed with the one nut 16, and the effort of fixing can be reduced. Moreover, the trouble of adjusting the fixing position between the two first fixing members 34 to the ceiling plate 2 can be reduced.

A fourth embodiment of the present invention will be described with reference to FIG. 8, FIG. 9, and FIG. 8 is a front view with the sprinkler attached, FIG. 9 is a HH view as seen from the ceiling, and FIG. 10 is a YY cross-sectional view of the holding member 43 held.
In this sprinkler inspection port cover, the second receiving member 37 is fixed to the sprinkler pipe connection joint 1 by the nut 39, and the cover body 14 to which the second holding member 40 is fixed is desired from the hole 17 for the sprinkler head 8. Thus, it is fixed by inserting and turning from the indoor side. In FIG. 8, a sprinkler head joint 8 is watertightly connected to the sprinkler pipe connection joint 1 fixed to the building frame by screws. In addition, the sprinkler pipe connection joint 1 is provided with a flexible resin water supply pipe 100 for supplying water via a joint 101 and water to another sprinkler pipe connection joint (not shown). A flexible resin water supply pipe 102 for supply is connected through a joint 103 in a watertight manner. The ceiling plate 2 immediately below the sprinkler pipe connection joint 1 is provided with a circular ceiling inspection opening 3, and an inspection port cover is provided here. This structure will be described below.

As shown in FIGS. 8 and 9, the second receiving member 37 is rectangular and has a mounting hole in the center, and a long hole shape in a state of being equidistant from the center and perpendicular to the long side, leaving one end. The notch 45 is in the opposite direction. Further, third leaf springs 44 are fixed by screws 46 on the left and right sides of the elongated hole-shaped notch. Here, the shape of the third leaf spring 44 will be described. As shown in FIG. 10, the third leaf spring 44 has a flat portion 44a having a mounting hole and an inclined portion 44b folded back in the center, and is bent with respect to the flat portion 44a. In this state, one end of the inclined portion 44b is connected.
The second receiving member 37 is inserted into a sprinkler head connecting member 38 which is a part of the sprinkler pipe connection joint 1 and is fixed by a nut 39 so as to be substantially perpendicular to the connection direction of the water supply pipes 100 and 102. This makes it possible to take as much space as possible for the inspection work of the sprinkler pipe connection part.
The cover body 14 is substantially aluminum and has an edge 21 on the outer periphery and a hole 17 in the center in plan view. Two bolts 15 are welded and fixed at a position equidistant from the center of the cover body 14. The second holding member 40 is fixed to the cover body 14 by inserting the holding metal fitting 41 of the second holding member 40 having an attachment hole into the bolt 15 and tightening the nut 16.

  Here, the second holding member 40 will be described. The second holding member 40 includes a flat part having the above-described mounting holes, a holding metal fitting 41 composed of a vertical surface part connected to the flat part and having a female screw inside, a columnar male screw at one end, and a flange at the other end. It comprises a holding metal fitting 43 having 104 and a nut 42. The holding metal fitting 43 is screwed onto the holding metal fitting 41 and is fixed by a nut 42.

  The cover main body 14 to which the second holding member 40 is fixed has the sprinkler head 8 in the center hole 17 after the second receiving member 37 and the sprinkler head 8 are fixed to the sprinkler head connecting member 38. However, it is attached from the indoor side (lower side in FIG. 8). First, at the time of attachment, the cover main body 14 is pushed in until the edge 21 hits the ceiling board 2. In this state, the second holding member 40 needs to be in a position where it does not interfere with the second receiving member 37. That is, the flange 104 of the holding metal fitting 43 is above the second receiving member 37, but must be below the convex portion of the inclined portion of the third leaf spring 44. This positional relationship is determined by the distance between the ceiling plate 2 and the housing to which the sprinkler pipe connection joint 1 is fixed, and the construction error is also large. In order to cope with this, in this example, the holding metal fitting 41 and the holding metal fitting 43 can be adjusted with screws as described above. Then, by rotating the cover body 14 in one direction (counterclockwise in FIG. 9), the holding metal fitting 43 is held by the third leaf spring 44 and fixed so as not to fall. At this time, the position where the rotation is stopped is determined by applying the holding metal fitting 43 to one end left in the elongated hole-shaped notch 45 of the second receiving member 37. In this state, the edge 21 is in close contact with the ceiling plate 2 by the urging force of the third leaf spring 44.

  Further, at this time, the outer peripheral diameter of the cover main body 14 is formed larger than the opening diameter of the ceiling inspection opening 3 and has a cover allowance due to the difference in diameter. Even if there is a deviation due to construction errors, the ceiling cannot be seen from the room as long as it is within the cover allowance. And after fixing the cover main body 14, the sprinkler head cover 19 is attached to the sprinkler head 8 from the indoor side.

With such a structure, the cover main body 14 can be attached to the ceiling inspection opening 3 of the ceiling plate 2 without using any special support, and a dedicated support from the building frame is not required. Can be reduced. Further, as described above, even when a positional deviation occurs due to a construction error between the attachment position of the sprinkler head 8 and the opening position of the ceiling inspection opening 3 which is the opening of the ceiling plate 2, the positional deviation is absorbed. be able to.
And the sprinkler inspection port cover can be provided directly under the sprinkler pipe connection joint 1, and the load at the time of construction or inspection can be reduced.
Moreover, since the cover main body 14 can be attached and detached by rotating the cover main body 14, the inspection is easy.
Further, the ceiling plate 2 is provided with a ceiling inspection opening 3 because the cover body 14 is held on the second receiving member 37 connected to the sprinkler pipe joint 1 via the second holding member 40. Thus, it is not necessary to fix the members alone, and the ceiling plate 2 does not need to support the weight of the cover main body 14, so that the construction is facilitated, and the degree of freedom in selecting the material of the ceiling plate 2 is increased.

In the present embodiment, the cover body 14 and the holding metal fitting 41 are fixed by tightening the nut 16 to the welded bolt 15. This is a structure for improving assemblability, but the present invention is not limited to this fixing means. For example, the holding metal fitting 41 may be fixed with one touch, or may be welded. The cover body 14 is made of resin instead of aluminum and is suitable for mass production even if the holding metal fitting 41 is insert-molded. Further, the second holding member 40 has a structure in which the holding metal fitting 43 is attached to the holding metal fitting 41 by screwing. However, this is a structure for enabling adjustment of the attachment height as much as possible, and is limited to this structure. Instead, the holding metal fitting 41 and the holding metal fitting 43 may be integrated.
In the embodiment of the present invention, two second holding members 40 are used. However, for example, two second holding members 40 may be integrated. If it does in this way, between the cover main body 14 and the 2nd holding member 40 can be fixed with the one nut 16, and the effort of fixing can be reduced.

A fifth embodiment of the present invention will be described with reference to FIG. FIG. 11 is a front view of the sprinkler attached.
In the sprinkler inspection port cover, the second fixing member 47 is fixed to the fixing portion 48 fixed to the building frame with screws 49, and the cover body 14 to which the fixing bracket 36 is fixed is fixed to the sprinkler head by the second spring 50. 8 is positioned and fixed from the indoor side so as to be desired from the hole 17. The sprinkler head joint 8 is connected to the sprinkler pipe joint 1 fixed to the fixing portion 48 in a watertight manner by screws. The ceiling plate 2 immediately below the sprinkler pipe connection joint 1 is provided with a circular ceiling inspection opening 3, and an inspection port cover is provided here. This structure will be described below.

The fixing portion 48 has a flat portion having the mounting hole 105 and a vertical surface bent at a right angle from one end of the flat portion and having the mounting holes 106 and 107. The second fixing member 47 is composed of two parts, each having a flat portion having a hook hole 108 at the tip, and a vertical surface having a mounting hole 109 bent at a right angle from one end of the flat portion. .
In the fixing portion 48, after the second fixing member 47 is fixed to the mounting hole 106 on the vertical surface side by the screw 49, the flat portion having the mounting hole 105 is fixed to the building frame. Further, the sprinkler pipe connection joint 1 is fixed to the attachment hole 107 on the lower end side.

The second spring 50 is composed of a spring part and a hook part bent at both ends in a circular shape, and the end of the spring part and the hook part are connected. The second spring 50 is a coil spring.
The cover body 14 is substantially aluminum and has an edge 21 on the outer periphery and a hole 17 in the center in plan view. Two bolts 15 are welded and fixed at a position equidistant from the center of the cover body 14. The fixing bracket 36 is fixed to the cover body 14 by inserting a fixing bracket 36 having a mounting hole into the bolt 15 and tightening the nut 16.

Here, the fixture 36 will be described. The fixing bracket 36 has a flat portion having the above-described mounting holes and a vertical surface bent at a right angle from one end of the flat portion and having a hook hole at the upper end. After fixing the second fixing member 47 and the sprinkler pipe connection joint 1 to the fixing portion 48 and connecting the sprinkler head 8 to the sprinkler pipe connection joint 1, the cover body 14 to which the fixing metal fitting 36 is fixed is The sprinkler head 8 is attached to the center hole 17 from the indoor side (lower side in FIG. 11). At the time of attachment, the hook portion on one end side of the second spring 50 is hooked on the hook hole 108 of the second fixing member, and the hook portion on the other end side is hooked on the hook hole of the fixing bracket 36 fixed to the cover body 14. Fixed. Since the cover main body 14 is fixed in a state of being biased to the back of the ceiling by the second spring 50, the cover main body 14 is in close contact with the surface of the ceiling board.
Further, at this time, the outer peripheral diameter of the cover main body 14 is formed larger than the opening diameter of the ceiling inspection opening 3, and has a cover allowance due to the difference between these diameters. The sprinkler head 8 and the ceiling inspection opening 3 Even if there is a deviation due to construction errors, the ceiling can be seen from the room as long as it is within the cover allowance. And after fixing the cover main body 14, the sprinkler head cover 19 is attached to the sprinkler head 8 from the indoor side.

By adopting such an attachment structure, the cover main body 14, the second fixing member 47, and the fixing portion 48 can be attached to the ceiling inspection opening 3 of the ceiling board 2 without using any special support. Since dedicated support from the frame is not required, construction load can be reduced. Further, as described above, even when a positional deviation occurs due to a construction error between the attachment position of the sprinkler head 8 and the opening position of the ceiling inspection opening 3 which is the opening of the ceiling plate 2, the positional deviation is absorbed. be able to. With the above-described mounting structure, the sprinkler inspection port cover can be provided directly below the sprinkler pipe connection joint 1, so that inspection can be performed by visual inspection from the room or by insertion of the hand, and the load during construction and inspection. Can be reduced.
Further, by pulling the cover body 14 downward, the sprinkler pipe connection joint 1 on the back of the ceiling can be visually confirmed from the ceiling inspection opening 3, and when the pulling is stopped, the cover body 14 is moved by the second spring 50. Return to the position to close the ceiling inspection opening 3. Further, as described above, since the inspection can be performed simply by pulling the cover main body 14 downward, it is not necessary to temporarily place the removed cover main body 14 on another place such as a floor, and the inspection becomes easier. Yes.
Further, in the construction, the second fixing member 47 is fixed to the fixing portion 48 and the second fixing member 47 and the cover main body 14 are simply fixed by the second spring 50. Since there is no need to fix the member simply by providing the ceiling inspection opening 3, the ceiling plate 2 does not need to support the weight of the cover body 14, and the construction is further facilitated, and the ceiling material can be freely selected. become.

  In the present embodiment, the cover main body 14 and the fixing bracket 36 are fixed by fastening the nut 16 to the welded bolt 15. This is a structure for facilitating replacement of only the fixing bracket 36 when the fixing bracket 36 is deformed for some reason, or for improving the assemblability. It is not limited to the means, and for example, the fixing bracket 36 may be fixed with one touch, or may be welded. Further, the cover body 14 is not made of aluminum, but is made of resin and is suitable for mass production even if the fixing bracket 36 is insert-molded. In the present embodiment, the second fixing member 47 is composed of two parts. However, the second fixing member 47 is not necessarily composed of two parts. For example, one part having hook holes 108 at both ends is used as the fixing part 48. Even if fixed, the same effect can be obtained.

A sixth embodiment of the present invention will be described with reference to FIG. FIG. 12 is a front view of the sprinkler attached.
In this sprinkler inspection port cover, the cover main body 14 in which the first connection member 52 is fixed to the second connection member 51 fixed to the sprinkler pipe connection joint 1 by the nut 39, and the sprinkler head 8 through the hole 17 are desired. By rotating from the indoor side so that the male screw portion provided in the first connecting member 52 and the female screw portion provided in the second connecting member 51 are screwed together, they are fixed. A sprinkler head 8 is connected to the sprinkler pipe joint 1 fixed to the building frame in a watertight manner by screws. The ceiling plate 2 immediately below the sprinkler pipe connection joint 1 is provided with a circular ceiling inspection opening 3, and an inspection port cover is provided here. This structure will be described below.

The second connecting member 51 has a cylindrical shape, and has a female screw portion at the inner peripheral portion and a surface having an attachment hole at the center at one end. The second connection member 51 is inserted into the sprinkler head connection member 38 that is a part of the sprinkler pipe connection joint 1, and is fixed to the sprinkler head connection member 38 by tightening the nut 39.
The cover body 14 is substantially aluminum and has an edge 21 on the outer periphery and a hole 17 in the center in plan view. A first connection member 52 having a cylindrical shape and a male screw on the outer peripheral portion is welded and fixed to the center portion of the cover main body 14.

After the second connecting member 51 and the sprinkler head 8 are fixed to the sprinkler head connecting member 38, the cover body 14 having the first connecting member 52 is formed in the chamber 17 while the sprinkler head 8 is desired in the center hole 17. It is attached from the inside (lower side of FIG. 12). At the time of attachment, by rotating the cover body 14, the female screw of the second connecting member 51 and the male screw of the first connecting member 52 are screwed together. The cover main body 14 is rotated until the edge 21 contacts and comes into close contact with the ceiling board 2.
Further, at this time, the outer peripheral diameter of the cover main body 14 is formed larger than the opening diameter of the ceiling inspection opening 3, and has a cover allowance due to the difference between these diameters. The sprinkler head 8 and the ceiling inspection opening 3 Even if there is a deviation due to construction errors, the ceiling can be seen from the room as long as it is within the cover allowance. And after fixing the cover main body 14, the sprinkler head cover 19 is attached to the sprinkler head 8 from the indoor side.

By adopting such an attachment structure, the cover body 14 can be attached to the ceiling inspection opening 3 of the ceiling plate 2 without using any special support, and no dedicated support from the building frame is required. The load can be reduced. Moreover, since it is not necessary to fix the member only by opening an opening in the ceiling, it is not necessary for the ceiling to support the weight of the cover main body, so that the construction is further facilitated, and the ceiling material can be selected freely. Further, as described above, even when a positional shift occurs due to a construction error between the mounting position of the sprinkler head 8 and the mounting position of the ceiling inspection opening 3 that is the opening of the ceiling plate 2, this positional shift is absorbed. be able to. For this reason, a sprinkler inspection port cover can be provided immediately below the sprinkler pipe connection joint 1, and visual inspection from the room or insertion by hand can be performed, and the load during construction or inspection can be reduced.
Moreover, the cover main body 14 can be attached and detached by rotating the cover main body 14 by screwing the screws of the first connecting member 52 and the second connecting member 51. For this reason, the attaching / detaching operation of the cover main body 14 is easy, and the inspection is further facilitated.

  In the present embodiment, the cover main body 14 and the first connection member 52 are fixed by welding. However, the present invention is not limited to this fixing means. It may be possible to fix with a fixing screw. The cover body 14 is made of resin instead of aluminum, and the first connecting member is also made of resin and is suitable for mass production even if it is integrally molded.

The front view in 1st embodiment of this invention is shown. The EE view in 1st embodiment of this invention is shown. The front view in 2nd embodiment of this invention is shown. The FF view in 2nd embodiment of this invention is shown. XX sectional drawing in 2nd embodiment of this invention is shown. The front view in 3rd embodiment of this invention is shown. The GG view in 3rd embodiment of this invention is shown. The front view in 4th embodiment of this invention is shown. The HH view in 4th embodiment of this invention is shown. The YY sectional view in the fourth embodiment of the present invention is shown. The front view in 5th embodiment of this invention is shown. The front view in 6th embodiment of this invention is shown. Schematic diagram of the first embodiment of the present invention Schematic diagram of the first embodiment of the present invention

Explanation of symbols

1 ... Sprinkler piping joint
DESCRIPTION OF SYMBOLS 2 ... Ceiling board 3 ... Ceiling inspection opening 4 ... Ring 5 ... Male screw 6 ... Inner frame 6a ... Tube part 7 ... Gutter part 8 ... Sprinkler head 9 ... Female screw
DESCRIPTION OF SYMBOLS 10 ... 1st leaf | plate spring 11 ... Flat surface part 12 ... Inclination part 13 ... Convex part 14 ... Cover main body 15 ... Bolt 16 ... Nut 17 ... Hole 18 ... Concave 19 ... Sprinkler head cover 20 ... Gap 21 ... Edge 22 ... First Receiving member 22a ... Receiving portion 23 ... Screw 24 ... First holding member 25 ... Second leaf spring 25a ... Planar portion 25b ... Inclined portion 26 ... Holding metal fitting 27 ... Holding portion 28 ... Screw 29 ... Screw 30 ... Convex portion 30a ... Groove 30b ... Vertical surface 31 ... Reinforcement wood 32 ... Screw 33 ... Fixing bracket 34 ... First fixing member 35 ... First spring 36 ... Fixing bracket 37 ... Second receiving member 38 ... Sprinkler head connecting member 39 ... Nut DESCRIPTION OF SYMBOLS 40 ... 2nd holding member 41 ... Holding metal fitting 42 ... Nut 43 ... Holding metal fitting 44 ... Third leaf spring 44a ... Plane part 44b ... Inclined part 45 ... Notch part 46 ... Screw 7 ... second fixing member 48 ... fixing portion 49 ... Screw 50 ... second spring 51 ... second connecting member
52. First connecting member
53 ... Gap
DESCRIPTION OF SYMBOLS 100 ... Water supply pipe 101 ... Joint 102 ... Water supply pipe 103 ... Joint 104 ... collar part 105 ... Mounting hole 106 ... Mounting hole 107 ... Mounting hole 108 ... Hook hole 109 ... Mounting hole 151 ... Water supply pipe 152 ... Water supply pipe 153 ... Fourth 154 ... Ceiling space 155 ... Screw 156 ... Mounting hole 157 ... Beam

Claims (6)

A cover main body that abuts the periphery of the ceiling inspection opening that opens in the ceiling plate and covers the ceiling inspection opening;
A sprinkler head protruding from a hole provided in the center of the cover body in plan view,
In the sprinkler device, wherein the sprinkler head and the water supply pipe are connected by a pipe connection joint, and the water supplied from the water supply pipe can be discharged from the sprinkler head.
A cylindrical portion inserted with a predetermined gap between the inner periphery of the ceiling inspection opening, and a flange portion projecting outward from the cylindrical portion and in contact with the periphery of the ceiling inspection opening A configured inner frame,
A ring disposed on the ceiling,
The ring portion is fixed to the ceiling inspection opening by screwing the ring with the outer peripheral surface of the tube portion and sandwiching the ceiling plate with the flange portion,
A leaf spring having one end fixed to the cover body is provided, and the other end of the leaf spring is engaged with the inner periphery of the tube portion, so that the periphery of the cover body is outside the ceiling portion. A sprinkler device that is held in contact with the surface of a plate. A cover main body that abuts the periphery of the ceiling inspection opening that opens in the ceiling plate and covers the ceiling inspection opening;
A sprinkler head protruding from a hole provided in the center of the cover body in plan view,
In the sprinkler device, wherein the sprinkler head and the water supply pipe are connected by a pipe connection joint, and the water supplied from the water supply pipe can be discharged from the sprinkler head.
A holding bracket fixed to the cover body and inserted with a predetermined gap between the inner periphery of the ceiling inspection opening and a holding portion protruding outward from the holding bracket. A holding member;
A receiving member composed of a receiving part fixed to the back of the ceiling, and a convex part in plan view protruding from the receiving part to the ceiling inspection opening side;
While engaging the convex portion of the receiving member and the holding portion of the holding member to hold the cover body on the ceiling plate,
A leaf spring fixed to either the holding part or the convex part,
The leaf spring urges the holding member toward the back of the ceiling, thereby holding the periphery of the cover main body in contact with the surface of the ceiling plate. A cover main body that abuts the periphery of the ceiling inspection opening that opens in the ceiling plate and covers the ceiling inspection opening;
A sprinkler head protruding from a hole provided in the center of the cover body in plan view,
In the sprinkler device, wherein the sprinkler head and the water supply pipe are connected by a pipe connection joint, and the water supplied from the water supply pipe can be discharged from the sprinkler head.
A plurality of fixing members composed of a reinforcing material fixed to the back of the ceiling, and a fixing bracket erected on the back of the ceiling from the reinforcing material,
A plurality of coil springs connecting the cover body and the fixing bracket;
The sprinkler device is characterized in that the coil spring biases the cover body toward the back of the ceiling, thereby holding the periphery of the cover body in contact with the surface of the ceiling plate. A cover main body that abuts the periphery of the ceiling inspection opening that opens in the ceiling plate and covers the ceiling inspection opening;
A sprinkler head protruding from a hole provided in the center of the cover body in plan view,
In the sprinkler device, wherein the sprinkler head and the water supply pipe are connected by a pipe connection joint, and the water supplied from the water supply pipe can be discharged from the sprinkler head.
A receiving member fixed to the pipe connection joint, projecting in a plan view on the back side of the ceiling in the opening for inspection of the ceiling, and having a plurality of notches at its tip;
A holding member that is fixed to the cover main body and is erected on the back side of the ceiling, and a holding member that is configured by a flange protruding from the tip of the holding bracket;
While engaging the flange portion of the holding member and the notch to hold the cover body to the pipe connection joint,
A leaf spring fixed to either the receiving member or the holding member, and the biasing force of the leaf spring holds the periphery of the cover body in contact with the surface of the ceiling plate. Sprinkler device. A cover main body that abuts the periphery of the ceiling inspection opening that opens in the ceiling plate and covers the ceiling inspection opening;
A sprinkler head protruding from a hole provided in the center of the cover body in plan view,
A fixing part for fixing the pipe connection joint to the building frame arranged on the back side of the ceiling,
In the sprinkler device, wherein the sprinkler head and the water supply pipe are connected by a pipe connection joint, and the water supplied from the water supply pipe can be discharged from the sprinkler head.
The fixing member is fixed to the fixing portion and includes a fixing member protruding in a plan view on the back side of the ceiling in the ceiling inspection opening and a plurality of coil springs connecting the fixing member and the cover body,
The sprinkler device is characterized in that the coil spring biases the cover body toward the back of the ceiling, thereby holding the periphery of the cover body in contact with the surface of the ceiling plate. A cover main body that abuts the periphery of the ceiling inspection opening that opens in the ceiling plate and covers the ceiling inspection opening;
A sprinkler head protruding from a hole provided in the center of the cover body in plan view,
In the sprinkler device, wherein the sprinkler head and the water supply pipe are connected by a pipe connection joint, and the water supplied from the water supply pipe can be discharged from the sprinkler head.
A cylindrical first connecting member fixed at the center of the cover body in plan view, having a screw at least at either the outer peripheral portion or the inner peripheral portion, and capable of inserting the sprinkler head;
A screw having at least one of an outer peripheral part and an inner peripheral part so as to be screwable with the screw of the first connection member, and a cylindrical second connection member fixed to the pipe connection joint,
The sprinkler device, wherein the second connecting member and the first connecting member are screwed together by the screw to hold the periphery of the cover body in contact with the surface of the ceiling plate.

Images