JP4822372B2 - Water shield for conshielded sprinkler head - Google Patents

Description

TECHNICAL FIELD The present invention relates to a concealed type sprinkler head water-preventing device in which a sprinkler head is concealed and installed inside a ceiling.

A conshielded sprinkler head is composed of a sprinkler head and a cover plate installed on the sprinkler head. The sprinkler head is installed on the back of the ceiling. Has a structure that only the cover plate can be seen.

The cover plate of the conshielded sprinkler head during a fire falls due to the heat of the fire. When the cover plate falls, the sprinkler head installed on the back of the ceiling is exposed, the thermal air current of the fire is directly exposed to the sprinkler head, the sprinkler head is activated and sprays water to extinguish the fire.

On the other hand, the moisture prevention means is mainly used for a sprinkler head installed in a small indoor space such as a house, and when the sprinkler head with the moisture prevention means is operated to spray water. Installed to prevent flooding to nearby sprinkler heads.

As an example of the water prevention apparatus installed in the conshielded sprinkler head, there are those described in Patent Documents 1 and 2.

JP 2008-264221 A JP 2000-14823 A

As shown in FIG. 9, the moisture prevention means 50 of Patent Document 1 is installed on the flange portion 54 of the retainer 53 that connects the cover plate 51 and the sprinkler head 52. The part 55 acts as a clip and is sandwiched and installed in the collar part 54.

However, when the moisture prevention means 50 is installed on the flange portion 54 of the retainer 53, the moisture prevention plate 56 that is pivotally supported by the clamping portion 55 is inserted between the flange portion 54 and the cover plate 51. 55 had to be sandwiched between the flanges 54, and there was room for improvement in installation workability.

In addition, the above-described wet prevention means 50 has the merit that the installation position is not limited in the collar portion 54 of the retainer 53 and can be installed at any position on the outer peripheral edge of the collar portion 53. Since the position is not regulated, it is not noticed even if the position is shifted for some reason after the installation of the water prevention means 50, and in the event of a fire, the position of the water prevention plate has shifted and the neighboring sprinkler head There is a risk of flooding.

The water-preventing plate 60 of Patent Document 2 shown in FIGS. 8A and 8B is extended from the annular holding portion 61 shown in FIG. 8B and a part of the periphery of the holding portion. It has a hanging piece 63 formed by hanging the extending portion 62 downward. The hanging piece 63 is locked through the opening of the holding portion 61 to the same butt portion as in the above-mentioned Patent Document 1, and the hanging piece 63 is used as a means for preventing moisture. Use.

The water-preventing plate 60 of Patent Document 2 is installed by being fitted into the sealing plate 64 of FIG. 8A, but the hanging piece 63 is provided at a position protruding from the outer periphery of the sealing plate 64. In order to prevent interference with the extension portion 62, the insertion port 65 is provided by being cut out, and the extension portion 62 is fitted into the insertion port 65.

When it is desired to install a plurality of the water-prevention plates 60 of the above-mentioned Patent Document 2, it is necessary to provide the insertion openings 65 of the sealing plate 64 into which the extending portions 62 are fitted according to the number and position of the hanging pieces 63.

Therefore, in the present invention, in view of the above problems, in the water-proofing device attached to the conshielded sprinkler head, the water-proofing plate can be easily attached and detached at a plurality of locations, and the water-proofing plate is moved by the water flow when the sprinkler head is discharged. An object of the present invention is to provide a water-prevention device that does not come off or come off.

To achieve the above object, a sprinkler head connected to the water supply pipe and installed on the back of the ceiling, and a cover plate installed close to the ceiling surface to conceal the sprinkler head from the indoor side and fall due to the heat of the fire And a water-proof device attached to a conshielded sprinkler head composed of a retainer that is externally mounted on the sprinkler head and has the cover plate installed at the bottom, and the water-proof device is attached to the retainer or the ceiling surface. A sprinkler head comprising a holding portion to be installed and a water-preventing plate detachably installed on the holding portion, wherein the holding portion is provided with a plurality of positions at which the water-preventing plate is installed at predetermined intervals. A movement restricting means for preventing the water-preventing plate from moving due to the momentum of water discharged from the water. Providing the water prevention device con shielded sprinkler heads with.

Further, in the concealed sprinkler head water-preventing device, the water-preventing plate movement restricting means is provided in the holding portion and the water-preventing plate in the circumferential direction of the holding portion of the water-preventing plate. moving a target water prevention device features and the co Nshirudo type sprinkler head in that a engagement portion detachable along with regulating the.

Further, in the concealed type sprinkler head water-preventing device, the water-preventing plate movement restricting means may be provided on the holding unit and the water-preventing plate in the outer peripheral direction of the holding unit of the water-preventing plate. providing the engaging portion detachable while restricting the movement of an object to be water prevention apparatus co Nshirudo type sprinkler head that said.

Further, in the water prevention apparatus of the con shielded sprinkler head, it is in the holding portion accommodating portion of the flange portion of the retainer is provided with the water preventing device characteristics and to Turkey Nshirudo sprinklers head is there.

In the concealed type sprinkler head water-preventing device, the water-preventing plate has a joint part detachably connected to the holding part, and a water-impervious part provided depending on the joint part. , the shielding water unit is the water prevention device characteristics and to Turkey Nshirudo type sprinkler head that supporting portion which extends in the direction of the sprinkler head are formed.

Further, in the concealed sprinkler head water-preventing device, a corner portion of the support portion formed on the water-preventing plate extends to the vicinity of the joint portion, and the holding portion is sandwiched between the corner portion and the joint portion. it is the water prevention device characteristics and to Turkey Nshirudo type sprinkler head that allows a.

Further, the in the water prevention device con shielded sprinkler head, to the feature that the display at the position where the corners of the surface facing the cover plate side of the holding portion is clamped is attached Turkey This is a water-preventing device for a shielded sprinkler head.

Further, in the water prevention apparatus of the con shielded sprinkler head, said to form a groove in the holding section as the movement restricting means, you characterized in that a projection which is engaged with the groove in Himizu preventing plate is the water preventing device co Nshirudo type sprinkler head.

Further, the in the water prevention device con shielded sprinkler heads, features and to Turkey Nshirudo type sprinkler head that is engaged with Himizu prevention plate drilled hole in the holding section as the movement restricting means It is a moisture prevention device.

Further, in the concealed type sprinkler head water-preventing device, as the movement restricting means, the holding portion is formed with a convex portion or a concave portion that restricts movement in the circumferential direction of the holding portion, and the convex portion or the concave portion. it is the water prevention device characteristics and to Turkey Nshirudo type sprinkler head that is engaged with the water prevention plate having a shape that can engage.

Further, in the concealed sprinkler head water-preventing device, the clip of the water-preventing plate having a notch formed on the inner peripheral side of the holding portion as the movement restricting means and having a U-shaped clip portion. parts are exposed to water prevention device characteristics and to Turkey Nshirudo type sprinkler head that was allowed to sandwich the holding portion fitted into the can the cut.

According to the present invention, in the moisture prevention device attached to the conshielded sprinkler head, the moisture prevention plate is provided at a plurality of locations by providing a plurality of positions where the moisture prevention plates are installed at predetermined intervals in the holding portion. It is easy to attach and detach, and by providing a movement restricting means for the water-preventing plate, it is possible to prevent the water-preventing plate from moving or coming off, so that the state where it is always installed can be maintained.

In addition, the water flow at the time of water discharge of the sprinkler head is provided by providing the holding portion and the water prevention plate with a detachable engaging portion that restricts the movement of the water prevention plate in the holding portion circumferential direction or the holding portion outer peripheral direction. It is possible to prevent the water-preventing plate from shifting or coming off due to an object hitting the water-preventing plate.

In addition, since the holding portion is provided with a housing portion for the collar portion of the retainer, the holding portion and the retainer are connected in a flat manner, and the holding portion and the moisture prevention plate are not protruded to the indoor side more than necessary. Designability is improved.

In addition, by providing a support part that extends in the water discharge direction of the sprinkler head in the water shielding part of the moisture prevention plate, the water shielding part is reinforced and the water discharged from the sprinkler head is allowed to pass through without being blocked. It is possible to prevent deformation and breakage of the wet prevention plate due to the momentum of water.

In addition, when the holding portion can be clamped by the corner portion and the joint portion of the support portion in the moisture prevention plate, and when it is desired to connect the holding portion and the moisture prevention plate at a stage before being attached to the retainer, the clamping portion Easy connection.

In addition, by providing a display at the position where the corner portion is sandwiched on the surface of the holding portion facing the cover plate, the moisture prevention plate is installed in a state after the holding portion is installed on the retainer or the ceiling surface. When it is desired to do so, it is possible to easily recognize the mounting position of the moisture prevention plate by the display.

The moisture prevention apparatus of the present invention includes a ring-shaped holding portion installed between a ceiling surface and a cover plate, and a moisture prevention plate that is detachably installed on the periphery of the holding portion. The holding part is installed on the retainer or the ceiling surface, and the connection between the holding part and the moisture prevention plate is detachable and can be firmly joined so that the moisture prevention plate is not removed by water discharge from the sprinkler head, A method such as fitting, meshing or screwing is used.

The holding unit is provided with a plurality of positions where the moisture prevention plates are installed at predetermined intervals in advance. Make it available.

Further, there is provided a regulating means for preventing the water-preventing plate from moving or coming off due to the water discharge from the sprinkler head. The restricting means restricts the movement of the water-preventing plate in the circumferential direction or the outer peripheral direction (the direction of water discharge from the sprinkler head) of the holding portion, such as unevenness and stepped portions that restrict the movement in the direction. By providing the engaging portion, the moisture prevention plate is detachably fixed at a predetermined position of the holding portion.

The moisture prevention plate is formed of a joint portion that is detachably connected to the holding portion, and a water shielding portion that is provided to hang down from the joint portion. The water-impervious portion may be formed in a plate shape so as to block the water released from the sprinkler head so that the neighboring sprinkler heads are not flooded, or the wings inclined in this direction to urge the water flow obliquely downward It is also possible to provide.

A support portion that reinforces the water shielding portion may be provided in order to prevent the water shielding portion from being detached or damaged by water discharge from the sprinkler head. The support portion may be provided on the moisture prevention plate or on the holding portion side. At this time, the support portion preferably has a structure that does not hinder water discharge from the sprinkler head. Specifically, the width of the surface facing the sprinkler head is made narrow. When it is desired to increase the strength of the support portion, the support portion is configured to extend in the direction of the sprinkler head so as not to hinder the water flow from the sprinkler head.

Moreover, it is also possible to provide the holding part integrally with the retainer that connects the sprinkler head and the cover plate.

Embodiments of the present invention will be described below with reference to FIGS. FIG. 1 is a diagram showing a water-preventing device of the present invention mounted on a conshielded sprinkler head, FIG. 2 is an enlarged view (partial cross-sectional view) of the main part of FIG. 1, and FIG. A perspective view and FIG. 4 are plan views of the water protection device as viewed from the cover plate side.

The water-preventing device of the present invention includes an annular holding unit 1 and a water-preventing plate 2 that is detachably installed on the holding unit 1.

FIG. 1 shows a sprinkler head 4 connected to a pipe 3 on the back of the ceiling. The sprinkler head 4 is covered with a cover plate 5 so as not to be seen from the indoor side. The cover plate 5 is connected to a cylindrical retainer 6 connected to the outer periphery of the sprinkler head 4.

The lower part of the retainer 6 is formed with a flange portion 7 that is expanded in a flange shape, and the tip of a leg 8 that is suspended from the flange portion 7 is bent to form a joint surface 9 with the cover plate 5. The The joining surface 9 and the cover plate 5 are joined by the low melting point alloy 10, and in the event of a fire, the low melting point alloy 10 is melted so that the cover plate 5 falls and the sprinkler head 4 can be seen from the indoor side. In order to promote the fall of the cover plate 5, it is possible to interpose the projectile body 5 </ b> A between the cover plate 5 and the collar portion 7.

The holding portion 1 has an annular shape, and the hole 11 has a larger diameter than the cylindrical portion of the retainer 6. The hole 11 is fitted into the cylindrical portion of the retainer 6 and is locked by the flange portion 7. The edge of the hole 11 is erected so as to curve toward the back of the ceiling. A recess 12 having a diameter slightly larger than the outer peripheral diameter of the flange 7 is formed on the surface of the holder 1 that contacts the flange 7, and the holder 1 is accommodated in the recess 12 so that the holder 1 is held in the recess 12. It is installed flat on the collar part 7 and is preferable in terms of design.

The outer diameter of the holding portion 1 is larger than the outer diameter of the flange portion 7, and a plurality of concave portions 14 are formed in the peripheral portion of the surface of the holding portion 1 on the side of the ceiling plate 13 to which the water-proofing plate 2 is fitted at equal intervals. ing. A groove 15 is formed in the recess 14. Further, it is possible to provide a wedge 16 for fixing the holding unit 1 to the ceiling plate 13 on the surface provided with the recess 14.

The water-preventing plate 2 includes a joint portion 17 that is fitted into the concave portion 14 and a water shielding portion 18 that is formed to hang down from the joint portion 17. The shape of the joint portion 17 is substantially the same as that of the concave portion 14, and when the joint portion 17 is fitted into the concave portion 14, the moisture prevention plate 2 does not move in the circumferential direction due to the momentum of water discharged from the sprinkler head. It regulates so that.

In a state where the joint portion 17 is fitted in the concave portion 14, the surface on the ceiling surface 13 side of the support portion 1 is in a flat state without irregularities. Further, a projection 19 that is engaged with the groove 15 is provided in a portion of the joint portion 17 that is fitted into the recess 14. By engaging the protrusions 19 and the grooves 15, it is possible to prevent the moisture-preventing plate 2 from being detached due to the momentum of the water discharged from the sprinkler head 4.

A part of the joint portion 17 is formed so as to protrude from the outer periphery of the holding portion 1. The aforementioned water shielding portion 18 is provided at a portion protruding from the outer periphery of the holding portion 1.

A support portion 20 is provided in the water shielding portion 18. The support portion 20 has a shape extending in the direction in which the sprinkler head 4 is installed so as not to hinder water discharge from the sprinkler head 4. A plurality of wings 21 </ b> A and 21 </ b> B are installed in the support unit 20 in layers, and the wings 21 </ b> A and 21 </ b> B are installed so as to be inclined downward from the sprinkler head 4 side toward the outer peripheral side of the holding unit 1. Thus, the water released from the sprinkler head 4 is prevented from splashing far away so that the adjacent sprinkler heads are not flooded.

Further, the corner portion 22 extending toward the joint portion 17 of the support portion 20 extends to the vicinity of the holding portion 1, and the holding portion 1 can be sandwiched between the corner portion 22 and the joint portion 17 and can be sandwiched. It is configured.

If the display 23 is provided at a location where the corner portion 22 of the holding portion 1 is in contact as shown in FIG. Becomes easier. The display 23 may be substituted by a groove or a protrusion.

In the moisture prevention apparatus of the present invention, the moisture prevention plate moves in the circumferential direction due to the water flow when the sprinkler head is discharged, and the position is shifted or does not move away in the outer peripheral direction (water discharge direction from the sprinkler head). If it is a structure, it will not be limited to said Example, It can also be set as the structure of FIGS. 5-7 demonstrated below. 5 to FIG. 7, the same reference numerals are given to the same parts as those in the above-described embodiment, and the detailed description is omitted. Further, FIGS. 5 to 7 are drawn with a part of the drawings omitted for use in explaining the gist.

As shown in FIG. 5, the nail | claw 32 of the moisture prevention board 2 is inserted in the hole 31 drilled in the holding part 1, and the moisture prevention board 2 is connected to the holding part 1, or it hold | maintains like FIG. A stepped portion 33 is formed on the side surface of the concave portion 14 formed in the portion 1, and a water-proof plate 2 having a projection 34 that can be engaged with the stepped portion 33 is provided. It is also possible to prevent 2 from coming off.

Further, in FIG. 6, a support portion 36 including a wing 35 provided so as not to scatter water released from the sprinkler head 4 to distant is engaged with a notch 37 of the holding portion 1 so as to be covered with water. The movement of the prevention plate 2 in the circumferential direction may be restricted.

Further, in FIG. 7, a clip portion 38 having a U-shaped cross section is provided on the water-preventing plate 2, and an end portion of the clip portion 38 extends from a notch 39 formed on the inner peripheral side of the holding portion 1 in the outer peripheral direction. The water blocking plate 2 is prevented from being detached by the water discharged from the sprinkler head 4 by being sandwiched. Further, the movement of the moisture-preventing plate 2 in the circumferential direction is restricted by the bent portion side surface 38A of the clip portion 38 and the notched side surface 39A.

The water-preventing device of the present invention mounted on a conshielded sprinkler head 1 is an enlarged view of a main part (partial cross section). Exploded perspective view of water protection device A plan view of the water protection device seen from the cover plate side Exploded perspective view showing another embodiment of the flood prevention device Exploded perspective view showing another embodiment of the flood prevention device Exploded perspective view showing another embodiment of the flood prevention device Water-preventing plate described in Patent Document 2 Means for preventing water exposure described in Patent Document 1

1 Holding part
2 Moisture prevention plate
3 Piping
4 Sprinkler head
5 Cover plate
6 Retainer
7 Buttocks
14 recess
15 groove
16 wedges
17 Joint
18 Water shielding part
19 Protrusion
20 Support part
21A, 21B feathers
22 corners
23 Display

Claims (13)

A sprinkler head connected to the water supply pipe and installed behind the ceiling, a cover plate installed close to the ceiling surface to conceal the sprinkler head from the indoor side and fall down due to the heat of the fire, and a lower part that is externally mounted on the sprinkler head The water-proof device is attached to a conshielded sprinkler head composed of a retainer on which the cover plate is installed, and the water-proof device is a retainer or a holding unit installed on the ceiling surface and the holding unit from the made water prevention plate, said in the holder and installation portion of the water prevention plate is provided with a plurality at predetermined intervals, the sprinkler head to the installation site and Himizu prevention plate installed detachably on comprising a movement restricting means for preventing the be-water prevention plate is moved by the force of the released water, the object water prevention plate Has a joint portion that is detachably connected to the holding portion and a water shielding portion that is suspended from the joint portion, and the water shielding portion has a support portion that extends in the direction of the sprinkler head. A concealed sprinkler head water-preventing device characterized by being formed . Before SL extends to the vicinity of corners joints of the support portion formed in the water prevention plate according to claim 1, wherein the con shielded sprinkler head is capable sandwiching the holding portion by the joining portion and the corner portion Water exposure prevention device. Before SL holding portion of the cover plate side the water prevention apparatus con shielded sprinkler head according to claim 1 or claim 2, wherein the display in a position where the support portions of the opposing surfaces is installed is attached to. A sprinkler head connected to the water supply pipe and installed behind the ceiling, a cover plate installed close to the ceiling surface to conceal the sprinkler head from the indoor side and fall down due to the heat of the fire, and a lower part that is externally mounted on the sprinkler head The water-proof device is attached to a conshielded sprinkler head composed of a retainer on which the cover plate is installed, and the water-proof device is installed on the retainer or the ceiling surface and has a larger diameter than the cover plate. It consists of a water-preventing plate installed at a position outside the cover plate so as to be detachable from the holding unit and the holding unit, and the holding unit is provided with a plurality of installation sites for the water-preventing plate at predetermined intervals. wherein the momentum of the released water from the installation site and the sprinkler head to Himizu preventing plate be water prevention plate is moved The water prevention device con shielded sprinkler head characterized by comprising a movement restricting means for preventing the. Move regulating means, the installation portion of the holding portion and the a detachable engaging portion and the joint portion of the water prevention plate engages, the movement of the holding portion a circumferential direction of the water prevention plate The concealed sprinkler head water-preventing device according to any one of claims 1 to 4, wherein the concealing- type sprinkler head is regulated. Move regulating means, wherein the installation portion of the holding portion and the joint portion of the water prevention plate A removable engagement portion engaged, from the holding portion outer periphery (sprinkler head of the water prevention plate The concealed type sprinkler head water-preventing device according to any one of claims 1 to 5, which regulates movement in a water discharge direction . The water prevention device con shielded sprinkler head of claim 1 to claim 6 any one of claims that housing portion of the flange portion of the retainer is provided in the front Symbol holder. The concealed sprinkler head water-preventing device according to any one of claims 1 to 7, wherein the installation site is a recess provided in a holding unit. As moving restricting means, and are formed in the holding part groove, of claims 1 to 8 to any one of claims having projections and formed on the water prevention plate for engaging the groove con shield type sprinkler head Water exposure prevention device. As moving restricting means, a hole bored in the holder, Con shielded sprinkler head of claim 1 to claim 8 any one of claims and a pawl formed on the water prevention plate which engages the said hole Water proof device. As moving restricting means, the area formed in the water prevention plate having a convex portion or concave portion formed in the holding portion for restricting the movement of the hold portion circumferentially, a shape that can engage with the convex portion or concave portion The concealed-type sprinkler head water-preventing device according to any one of claims 1 to 7, comprising: As moving restricting means, the notch formed on the inner peripheral side of the hold portion, of claims 1 to 7 any one of claims having a clip portion of the U-shaped cross-section formed in the water prevention plate Water shield for conshielded sprinkler head. The concealed sprinkler head water-preventing device according to any one of claims 1 to 12, wherein the movement restricting means is provided on a surface of the holding portion on the ceiling plate side.

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