JP2000279547A - Sprinkler head - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate the adjustment of the direction of a sprinkler directing device of a sprinkler head by providing an elastic body between a sealing plate and a head protector and preventing the movement of the head protector toward the head body or the sealing plate. SOLUTION: A sealing plate 22 is an annular member inserted between the bottom face of a ceiling 3 and a head protector, provided with an approximately V-shaped cross sectional frame part and a flange extended inward from the frame part, and has such a shape as cutting into a flange and raising up a part of the flange toward a side for attaching the head protector. A cantilever leaf spring 26 extended diagonally from the flange in the circumferential direction is integrally provided. The leaf spring 26 touches the head protector with its tip part 27 so as to prevent an accidental movement of the head protector toward the head body or the sealing plate 22.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sprinkler head, and more particularly to a sprinkler head for a sprinkler fire extinguishing system installed on a ceiling of a building such as a building or a house.

[0002]

2. Description of the Related Art In a sprinkler fire extinguishing system described in Japanese Patent Application Laid-Open No. Hei 10-272201, it is described that a water spray deflection device is provided in a head protector for protecting a sprinkler head from external force. This sprinkler deflects water by deflecting the direction of water flowing to the adjacent sprinkler head among the fire extinguishing water sprinkled from the sprinkler head attached to the ceiling of the building, so that the adjacent sprinkler head is actuated. This is to make it impossible.

FIG. 6 shows this known sprinkler head 1. In FIG. 6, a sprinkler head 1 is connected to a socket portion 2 of a water supply pipe for fire extinguishing, and a head main body 5 viewed from a ceiling opening 4 provided in a ceiling 3 of a room into a room.
A head protector 6 which is screw-engaged with the head body 5 to protect the head body 5 from external force; and a water protector provided on the head protector 6 for directing a part of water spray from the head body 5 in a predetermined direction, And a sealing plate 9 sandwiched between the head protector 6 and the ceiling opening 4 to cover a gap 8 between the head protector 6 and the peripheral edge of the ceiling opening 4. ing. The water sprinkling deflecting device 7 is a louver-type deflecting plate having a large number of vanes 10, and is tilted so that the fire extinguishing water sprinkled from the head body 5 is directed slightly downward with respect to the lower surface of the ceiling 3. Since it is provided between the six pillars 11 of the head protector 6 arranged at intervals, the head protector 6 is provided within an angle of about 60 degrees with respect to the center of the sprinkler head 6 in a horizontal plane.

The head body 5 of the sprinkler head 1 is
It is screwed and supported by the socket portion 2 of the water supply pipe for fire extinguishing.
It has. When the heat-sensitive plate 13 reaches a predetermined temperature, the link mechanism (not shown) is disassembled and the nozzle 5 of the head main body 5 is disassembled.
Fire extinguishing water is released from a. Fire extinguishing water is deflector 1
At 4, water is sprinkled almost uniformly in a horizontal plane. The head body 5 is provided with an external thread 15 on the outer peripheral portion thereof, and the internal thread 16 of the head protector 6 provided with the water spray deflection device 7 is screwed to the external thread 15. For this reason, a part of the fire extinguishing water sprinkled over the entire circumference is
And is deflected and directed downward as indicated by arrow A in FIG. 6 without hitting an adjacent sprinkler head (not shown).

The position of the head protector 6 in the axial direction is determined by the relative positions of the screws 15 and 16, and is higher when the screwing amount is large, and lower when the screwing amount is small.
Also, a gap 8 between the ceiling 3 and the structural material of the building.
Is closed by the sealing plate 9,
The sealing plate 9 is inserted between the lower surface of the ceiling 3 and the head protector 6, and is brought as close as possible to the lower surface of the ceiling 3 by the head protector 6 screwed to the socket portion 2. Therefore, the position of the head protector 6 is related to the position of the ceiling 3 and the head protector 6
Is desirably attached to a position in contact with the ceiling 3 via the sealing plate 9.

[0006]

However, in such a conventional sprinkler head 1, when the head protector 6 is screwed into the head body 5 during assembly,
As the head protector 6 rises, the sealing plate 9 also rises, and eventually comes into contact with the lower surface of the ceiling 3.
At this position, the water spray deflector 7 provided on the head protector 6
The head protector 6 is rotated on the head main body 5 to loosen the contact with the ceiling 3 so that the direction of the watering deflector 7 can be changed. It is usually necessary to adjust. In addition, watering deflector 7
May be removed and re-installed between the predetermined columns 11. When making such adjustments by rotation, of course,
The engagement or abutment of the head protector 6 and the sealing plate 9 with respect to the ceiling 3 becomes loose or separated, so that the head protector 6 can rotate almost freely with respect to the ceiling 3.

Accordingly, in the sprinkler head 1 configured as described above, the head protector 6 is moved by the head protector 6 when an object collides during the installation work of the sprinkler head 1 or during the installation work of other equipment after the installation. It may rotate with respect to the main body 5. Further, the head protector 6 may rotate with respect to the head main body 5 due to a strong jet of fire-extinguishing water when the sprinkler head 1 operates. If such rotation occurs, the direction of the watering / deflecting device 7 in the horizontal plane is deviated from the initial adjustment, and fire extinguishing water is applied to the adjacent sprinkler head, which may hinder its operation.

Accordingly, an object of the present invention is to easily adjust the direction of the sprinkler head watering deflector, and to maintain the desired function of the sprinkler head without changing the adjusted direction easily. It is to provide.

[0009]

According to the present invention, a head main body which is connected to a socket portion of a water supply pipe for fire extinguishing and is desired to enter a room from a ceiling opening provided in a ceiling of the room, and is screwed to the head main body. A head protector that protects the head body from external force, and a watering deflector that is provided on the head protector and directs a part of watering from the head body in a predetermined direction, and is sandwiched between the head protector and the ceiling opening. In a sprinkler head provided with a sealing plate for covering a gap between the head protector and the peripheral edge of the ceiling opening, an elastic body is provided between the sealing plate and the head protector, and a head body or a sealing plate of the head protector is provided. The sprinkler head is characterized by preventing movement of It is. The elastic body may be a cantilever spring integrally extending from the sealing plate or a spring washer surrounding the head body. Further, it is preferable that the watering / deflecting device be a separate component fixed to the head protector.

[0010]

FIG. 1 shows a sprinkler head 21 according to the present invention. In the figure, the sprinkler head 2
1 is substantially the same as the conventional sprinkler head 1 shown in FIG. 6, except that the sealing plate 22 is different. Accordingly, here, in FIGS. 1 to 5, the sealing plate 22 according to the present invention is a substantially annular member inserted between the lower surface of the ceiling 3 and the head protector 6, and has a substantially V-shaped cross section. It has a frame portion 23 and a flange 24 extending inward from the frame portion 23. As best shown in FIGS. 4 and 5, the flange 24 is formed with a cut 25 so that a part of the flange 24 is raised toward the side where the head protector 9 is mounted. A cantilevered leaf spring 26 extending obliquely in the circumferential direction is provided integrally. The three leaf springs 26 are provided at equal intervals in the circumferential direction of the sealing plate 22, and stand up from the plane of the flange 24, and when the sprinkler head is assembled, its tip portion 27.
To contact the head protector 6. Thus, the leaf spring 26 is the elastic body 7 provided between the sealing plate 22 and the head protector 6, and prevents the head protector 6 from accidentally moving with respect to the head main body 5 or the sealing plate 22, Thus, it can be said that the change in the direction of the watering / deflecting device 7 is prevented.

Therefore, in such a sprinkler head 21 of the present invention, the socket 2 of the fire extinguishing water supply pipe is used.
The head protector 6 is attached to the head body 5 screwed into the head body by screw engagement. In the position where the head protector 6 is to be attached, a sufficient screwing distance is obtained, the sealing plate 22 placed on the head protector 6 is located sufficiently close to the lower surface of the ceiling 3, and the water deflecting device 7 of the head protector 6 is correct. It is a position oriented in the direction.

When the head protector 6 screwed into the head body 5 during assembly is screwed into the head body 5, the sealing plate 22 rises as the head protector 6 rises, and eventually comes into contact with the lower surface of the ceiling 3.
At this position, the water spray deflector 7 provided on the head protector 6
It is sufficient that the head protector 6 is correctly oriented in the direction of the adjacent sprinkler head (not shown), but usually this is not necessarily the case. Deflector 7
It is usually necessary to adjust the direction in the horizontal plane.

According to the present invention, even when such a rotation adjustment is performed, the head protector 6 and the ceiling plate 3 with respect to the ceiling 3 are provided because of the elastic body 26 provided between the head protector 6 and the sealing plate 22. The engagement or abutment relationship of the head protector 6 is elastically pressed against each other in the axial direction, and a frictional force is generated therebetween. Does not rotate with respect to the ceiling 3.

The illustrated watering and deflecting device 7 is shown in FIGS.
As is apparent from the figure, the head protector 6 is formed as a separate component, and is fitted between the support 11 and the ring 27 of the head protector 6 in a snap-fit manner or fixed by an adhesive. The watering deflection device 7 has a plurality of deflection vanes 29 in a substantially rectangular frame as a whole.

As described above, since the water sprinkling / deflecting device 7 is a separate component fixed to the head protector 6, after the head protector 6 is attached to the head main body 5 by screw engagement, it is located at the most appropriate position. Two columns 11 can be selected and mounted between them, which makes the mounting work easier. Further, even if the support 11 is in an inappropriate position after the attachment by screw engagement, the angle at which the head protector 6 has to be rotated can be reduced, and the amount of displacement due to rotation from the optimal screw engagement attachment position can be reduced. Is reduced. Further, even when the sprinkler head is provided in the same room as in the case where another sprinkler head is provided, or when the sprinkler head is not necessary such as when the sprinkler head is used alone. In addition, a common head protector 6 can be used, and it is not necessary to use different molds for producing the head protector 6 depending on the presence or absence of the watering / deflecting device 7.

As another embodiment of the elastic body provided between the sealing plate 22 and the head protector 6, not the cantilever spring 26 extending integrally from the flange 24, but the flange 24 of the sealing plate 22 and the head protector 6. A ring-shaped spring washer that is sandwiched between and surrounds the head body 5 may be used. In this case, the manufacturing of the sealing plate 22 is easy, and the spring washer as the elastic body 26 can be omitted as necessary, for example, when the watering / deflecting device 7 is not used.

[0017]

As described above, the sprinkler head according to the present invention is connected to the socket of the water supply pipe for fire extinguishing, and is provided with a head main body which is viewed from the ceiling opening provided in the ceiling of the room into the room, A head protector that engages and protects the head body from external force, a water spray deflector that is provided on the head protector and directs a part of water spray from the head body in a predetermined direction, and a head protector and a ceiling opening. In a sprinkler head having a sealing plate that is sandwiched and covers a gap between a head protector and a periphery of a ceiling opening, an elastic body is provided between the sealing plate and the head protector, and a head body of the head protector or This prevents movement with respect to the sealing plate, thereby preventing a change in the direction of the watering deflector. The elastic body may be a cantilever spring extending integrally from the sealing plate or a spring washer surrounding the head body.

Therefore, in the sprinkler head configured as described above, the head protector is pressed by the elastic force and held by the frictional force, so that some action force during or after the installation of the sprinkler is installed. The head protector does not easily rotate with respect to the head main body even if the head protector receives the impact of the strong jet of fire-extinguishing water during the operation of the sprinkler. For this reason, there is no possibility that the direction of the watering deflection device is deviated from the initial adjustment and watering is applied to the adjacent sprinkler head. As described above, it is easy to adjust the direction of the sprinkler head of the sprinkler head, and it is possible to obtain a sprinkler head that can maintain the desired function of the sprinkler head without changing the adjusted direction easily. Also, if the elastic body is an integral cantilever spring, the number of parts does not need to be increased, assembly is easy and reliable, and if a spring washer surrounding the head body is used,
The manufacturing of the sealing plate is easy, and the elastic body can be omitted if necessary.

Further, if the watering / deflecting device is a separate component fixed to the head protector, after the head protector is attached to the head body, two pillars at the most appropriate positions are selected, and the two columns are selected. Can be attached to the
Installation work becomes easier. In addition, a common head protector can be used when a watering / deflecting device is required or not, and there is no need to use different molds depending on the presence or absence of the watering / deflecting device.

[Brief description of the drawings]

FIG. 1 is a side sectional view showing a state where a sprinkler head of the present invention is mounted on a ceiling.

FIG. 2 is a front view of the sprinkler head of FIG. 1;

FIG. 3 is a bottom view of the sprinkler head of FIG. 1;

FIG. 4 is a side sectional view showing a sealing plate of the sprinkler head of the present invention.

FIG. 5 is a plan view of the sealing plate of FIG. 4;

FIG. 6 is a side sectional view of a conventional sprinkler head.

[Explanation of symbols]

1 sprinkler head, 2 sockets, 3 ceilings,
4 ceiling opening, 5 head body, 6 head protector, 7 watering deflector, 22 sealing plate, 1
Sprinkler head, 26 elastic body.

Claims (4)

[Claims] 1. A head body connected to a socket of a water supply pipe for fire extinguishing and viewed from a ceiling opening provided in a ceiling of a room into a room, and a screw engagement with the head body to protect the head body from external force. A water protector provided on the head protector for directing a part of water from the head body in a predetermined direction; and a head protector sandwiched between the head protector and the ceiling opening. And a sealing plate that covers a gap between the peripheral edge of the ceiling opening and a ceiling plate. An elastic body is provided between the sealing plate and the head protector, and the head body of the head protector or Prevents movement against the sealing plate,
A sprinkler head characterized in that the sprinkler head is prevented from changing its direction. 2. The sprinkler head according to claim 1, wherein said elastic body is a cantilever spring integrally extending from said sealing plate. 3. The sprinkler head according to claim 1, wherein said elastic body is a spring washer surrounding said head body. 4. The sprinkler head according to claim 1, wherein the water spray deflection device is a separate component fixed to the head protector.