JP3184304U - Sprinkler head accessories - Google Patents

Abstract

A sprinkler head accessory that covers a space between a ceiling plate and a sprinkler head, such as a sealing plate and a cover plate, having a configuration that can be installed flat on a ceiling surface.
A sprinkler head accessory 1 is detachably installed on a sprinkler head SH, and a deformable flexible portion 3C is provided on or near a plate portion 3 that abuts a ceiling plate C of the sprinkler head accessory 1.
[Selection] Figure 1

Description

The present invention relates to an accessory attached to a fire extinguishing sprinkler head.

As one of conventional sprinkler heads, there is a flash-type sprinkler head that is embedded and installed in a ceiling (for example, see Patent Document 1). The flash type sprinkler head is installed by being embedded in the ceiling as described above, and a hole for penetrating the sprinkler head to the indoor side is formed in the ceiling plate. The hole is covered by a sealing plate having a plate part having a diameter larger than that of the hole. The sealing plate is detachably installed on the sprinkler head.

In addition to the flash sprinkler head described above, there is a conshielded sprinkler head (see, for example, Patent Document 2), where the sprinkler head main body is embedded and installed in the ceiling, and the sprinkler head main body is installed. The hole in the ceiling plate drilled in is covered with a disk-shaped cover plate having a larger diameter than the hole. The cover plate is detachably installed on the sprinkler head body.

JP-A-9-94307 JP 2003-339901 A

The above-mentioned sealing plate and cover plate are detachably installed on the sprinkler head, but if the falling part of the water supply pipe connected to the sprinkler head is not installed perpendicular to the ceiling plate, the plate part of the sealing plate Since the ceiling plate is not installed in parallel, the plate portion may be installed inclined from the ceiling plate.

If the plate portion is installed inclined from the ceiling plate, a gap is generated between the plate portion and the ceiling plate, which is not preferable in appearance. However, if the construction accuracy of the piping is increased so that the falling portion of the water supply piping and the ceiling plate are vertical, the work efficiency is lowered.

Therefore, in the present invention, in view of the above problems, in sprinkler head accessories that cover the space between the sprinkler head and ceiling plate, such as a sealing plate and a cover plate, the sprinkler head accessory can be installed flat with respect to the ceiling surface. The purpose is to provide a simple structure.

In order to achieve the above object, the sprinkler head accessory of the present invention is provided with a sprinkler head that covers a gap between a sprinkler head embedded in the ceiling and a hole in a ceiling plate through which the sprinkler head is inserted. The sprinkler head accessory is detachably installed on the sprinkler head, and is provided with a deformable flexible portion at or near the plate portion that comes into contact with the ceiling plate of the sprinkler head accessory.

According to the present invention, by providing the flexible portion, the plate portion can come into contact with the ceiling plate in a flat manner. As a specific configuration of the flexible portion, a flexible portion is formed on the periphery of the plate portion so that the inclination between the plate portion and the ceiling plate can be absorbed, or a bellows structure is provided near the center of the plate portion. The bellows portion can absorb the inclination between the plate portion and the ceiling plate.

As described above, according to the present invention, the plate portion and the ceiling plate can be contacted flat, and it is not necessary to strictly adjust the positional relationship between the water supply pipe connected to the sprinkler head and the ceiling plate. Can be reduced.

Sectional drawing of sprinkler head accessory of 1st Embodiment Modification of FIG. Sectional view of the sprinkler head accessory of the second embodiment Modification 1 of FIG. Modification 2 of FIG.

1st Embodiment (FIGS. 1-2)
The first embodiment is a sealing plate installed on a flash-type sprinkler head. The sealing plate 1 includes a cylindrical portion 2 connected to the outer peripheral surface of the sprinkler head main body SH, and a plate portion 3 that covers a gap between the sprinkler head main body SH and the hole H of the ceiling plate C.

The sealing plate 1 is formed of a material having elasticity such as resin, and when the color is the same as that of the ceiling plate C, the sealing plate 1 is not conspicuous in synchronism with the ceiling plate C and the design is improved.

The cylindrical portion 2 is formed with a protrusion 5 that can be engaged with an engaging groove 4 formed on the outer peripheral surface of the sprinkler head main body SH. The protrusion 5 is formed in a layered manner on the inner peripheral surface of the cylindrical portion 2, and the position of the sprinkler head body SH and the sealing plate 1 can be adjusted by the engagement position between the protrusion 5 and the engagement groove 4 on the sprinkler head body SH side. is there. The sealing plate 1 is connected to the water supply pipe P after the sprinkler head SH is connected and the ceiling plate C is installed, and then the cylindrical portion 2 is inserted from the hole H into the sprinkler head SH so that the plate 3 is in contact with the ceiling plate C. The groove 4 and the protrusion 5 are engaged with each other and installed.

The plate portion 3 is formed in a dish shape at the lower end of the tube portion 2, and the outer peripheral diameter of the plate portion 3 is larger than the diameter of the hole H drilled in the ceiling plate C described above. The plate portion 3 is inclined from the inner periphery 3A toward the outer periphery 3B, and the height on the outer periphery 3B side is lower than the height on the inner periphery 3A side.

The flexible part 3C, which is the edge part on the outer periphery 3B side of the plate part 3, is formed thin and can be easily deformed. Since the flexible portion 3C is configured to be deformable, the flexible portion 3C can be deformed and brought into contact with the ceiling plate C even when the sprinkler head SH is installed to be inclined with respect to the ceiling surface.

Although the embodiment shown in FIG. 1 has been described above, in the embodiment shown in FIG. 2, a flexible portion 3 </ b> D that can be expanded and contracted is provided on the inner periphery 3 </ b> A side of the sealing plate 1. The flexible portion 3D has an accordion structure, and the edge of the outer periphery 3B of the plate portion 3 is also provided when the flexible portion 3D expands and contracts and the sprinkler head SH is inclined with respect to the ceiling surface. It can be installed in contact with the ceiling plate C.

Second Embodiment (FIGS. 3 to 5)
The second embodiment is a cover plate 11 installed on a conshielded sprinkler head CS. The cover plate 11 includes a retainer 12 and a cover 13.

In FIG. 3, the sprinkler head CS is connected to the water supply pipe P. The retainer 12 has the same function as the sealing plate described in the first embodiment, and the cylindrical portion 14 has a projection that can be screwed with the spiral groove 15A of the support cup 15 provided on the outer peripheral portion of the sprinkler head CS. 14A is formed. The retainer 14 is installed with the sprinkler head CS connected to the water supply pipe P, and after the ceiling plate C is installed, the cylindrical portion 14 is inserted from the hole H to the sprinkler head CS side, and the protrusion 14A is screwed into the spiral groove 15A. To do.

A flange portion 14 </ b> B is formed at the lower end of the cylindrical portion 14. The flange portion 14B plays the same role as the plate portion 3 described above, and has an action of covering the hole H formed in the ceiling plate C. Also, a plurality of leg portions 14C are formed to hang down from the collar portion 14B. The distal end of the leg portion 14C is bent substantially parallel to the flange portion 14B, and the distal end portion 14D is joined to the cover 13 by the low melting point alloy 16.

The leg portion 14C is provided with a flexible portion 14E that can be bent easily. The flexible portion 14E can be formed thinly to be easily bent, or can be configured by making the width of the flexible portion 14E narrower than the width of the leg portion 14C. This

Even when the sprinkler head CS is installed to be inclined with respect to the ceiling surface C by bending and deforming the flexible portion 14E, the outer peripheral edge of the flange portion 14B is installed in contact with the ceiling plate C. Can do.

The plate 13 has a disk shape and is joined to the tip portion 14D of the retainer 14 by the low melting point alloy 16 as described above. The plate 13 has a function of covering the sprinkler head CS installed in the retainer 14, and the sprinkler head CS is hidden by the plate 13, and further, there is almost no step between the ceiling plate C and the plate 13. Is excellent. In the event of a fire, the low melting point alloy 16 that has joined the plate 13 melts and the plate 13 falls, and the sprinkler head CS inside the retainer 14 is exposed. The sprinkler head CS is activated by the heat of the fire and sprays water supplied from the water supply pipe P to extinguish the fire.

The example shown in FIG. 4 is a modification of the embodiment of FIG. In FIG. 3, the flexible portion is provided on the leg portion 14 </ b> C, but in FIG. 4, the flexible portion 17 is installed at the boundary between the flange portion 14 </ b> B and the cylindrical portion 14.

A cut 17A having a V-shaped cross section is engraved on the surface of the flexible portion 17 in a layered manner so that it can be easily deformed. Even when the sprinkler head CS is installed to be inclined with respect to the ceiling surface C, the notch 17A can be deformed, so that the outer peripheral edge of the flange 14B can be installed in contact with the ceiling plate C.

The example shown in FIG. 5 is also a modification of the embodiment of FIG. In FIG. 5, the flexible portion 18 is constituted by a wire mesh 18 </ b> A installed below the cylindrical portion 14. The metal mesh 18A is extendable and can be installed with the outer peripheral edge of the collar portion 14B in contact with the ceiling plate C even when the sprinkler head CS is installed to be inclined with respect to the ceiling surface C.

1 Sealing plate
2 cylinder
3 Plate part
3C, 3D flexible part
4 engaging groove
5 Protrusions
11 Cover plate
12 Retainer
13 Cover
14 Cylindrical part
14A protrusion
14B Isobe
14C Leg
14D tip
14E, 17, 18 Flexible part
15 Support cup
15A spiral groove
16 Low melting point alloy
P Water supply piping
SH, CS Sprinkler head

Claims (9)

A sprinkler head accessory that covers the gap between the sprinkler head embedded in the ceiling and the hole in the ceiling plate through which the sprinkler head is inserted. The sprinkler head accessory is detachably installed on the sprinkler head. A sprinkler head accessory characterized in that a deformable flexible portion is provided in the vicinity of a plate portion in contact with the ceiling plate of the sprinkler head accessory.   The sprinkler head accessory is a sealing plate, and the sealing plate has a cylindrical portion connected to the outer peripheral surface of the sprinkler head main body and a plate portion that comes into contact with the ceiling surface, and the flexible portion is a peripheral edge of the thin plate portion. The sprinkler head accessory according to claim 1.   The sprinkler head accessory is a sealing plate. The sealing plate has a cylindrical portion connected to the outer peripheral surface of the sprinkler head main body and a plate portion that comes into contact with the ceiling surface, and the flexible portion is installed near the center of the plate portion. The sprinkler head accessory according to claim 1 or 2, which has a bellows structure.   The sprinkler head accessory is a cover plate. The cover plate is a retainer screwed to a support cup provided on the outer periphery of the sprinkler head, and a sprinkler head joined to a leg portion installed at the lower end of the retainer by a low melting point alloy. The sprinkler head accessory according to claim 1, further comprising: a cover plate that covers the base plate, wherein the flexible portion is installed on the leg portion.     The sprinkler head accessory according to claim 4, wherein the flexible portion is formed thinner than the leg portion.     The sprinkler head accessory according to claim 4 or 5, wherein the flexible portion is formed narrower than a width of the leg portion.   The sprinkler head accessory is a cover plate. The cover plate is a retainer screwed to a support cup provided on the outer periphery of the sprinkler head, and a sprinkler head joined to a leg portion installed at the lower end of the retainer by a low melting point alloy. 2. A sprinkler head accessory according to claim 1, further comprising a cover plate that covers the cover, wherein the flexible portion is installed at a boundary between a cylindrical portion screwed into the support cup of the retainer and a collar portion formed at a lower end of the cylindrical portion. .     8. The sprinkler head accessory according to claim 7, wherein a V-shaped cut is formed in a layer shape on the surface of the flexible portion. The sprinkler head accessory according to claim 7 or 8, wherein the flexible portion is a wire mesh installed below the cylindrical portion.

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