JP2697608B2 - Fire extinguisher - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fire extinguisher using a long fire hose.

[0002]

2. Description of the Related Art Hitherto, as a fire extinguishing device installed in a passage such as a building, various fire extinguishing devices using a hollow pipe-shaped fire hose have been proposed and put into practical use. In the fire extinguisher, how to accommodate a long fire hose in a fire hydrant box is a big problem. For example, Japanese Utility Model Laid-Open No. 2-28263 discloses that a fire hydrant box is directed forward to the rear side. An extended hollow pipe-shaped support shaft is provided, the rotatable reel is rotatably supported on the support shaft, and a fire extinguisher hose is wound on or out of the rotary reel while rotating the rotary reel, and the fire is extinguished. By connecting the base end of the hose to the rotary joint attached to the support shaft and connecting the base end of the support shaft to the water supply pipe,
Water is supplied to the fire hose through the support shaft, while the fire hose is supported in a cantilever manner on the entire weight of the rotating reel around which the fire hose is wound. A fire extinguisher having a configuration in which a rotary reel and a water supply pipe are rotatably extended to the front of the fire extinguisher is described.

Further, as the fire extinguisher, Japanese Utility Model 3-3
No. 2382 discloses that a hollow drum having an opening in the front is fixedly installed in a fire hydrant box, and the fire hose is inserted through the opening so that the fire hose is sequentially fed out from the center side when the fire hose is pulled out. Are described, and are wound sequentially from the side along the inner surface of the outer peripheral wall portion of the drum toward the center side.

[0004]

However, in the fire extinguisher using the rotating reel, although the fire hose can be easily wound and fed, the entire weight of the wound fire hose can be reduced by a cantilever rotating reel. In use, the fire hose that has been supplied with water and becomes heavy must be temporarily supported by a cantilever structure until the fire hose is completely extended from the rotating reel during use. There is. Therefore, since the moment on the support shaft becomes large, it is necessary to sufficiently increase the mounting strength of the rotating reel support portion. For this reason, the problem that the mounting structure of the rotating reel becomes large or complicated is further promoted.

The most serious problem is that, in such a fire extinguisher of the rotating reel type, the rotating reel is turned around the support shaft toward the front of the fire extinguishing apparatus during a fire extinguishing operation. This will block the most important evacuation passages. This is a very important point in a device used in an emergency such as a fire.

Further, in the fire extinguisher using a fixed type drum as disclosed in Japanese Utility Model Publication No. 3-32382, when the fire hose accommodated in the drum is drawn out spirally, the fire hose is inevitably twisted. . Then, in order to easily absorb this twist, for example, a Japanese Utility Model Application Laid-Open No. 2-37.
No. 54, the shape-retaining fire hose having a special structure must be used, and the fire hose has a low degree of freedom. Also, as described above, in order to give the fire hose a shape-retaining property, a rigid spiral linear body must be used as a reinforcing material, which makes the fire hose expensive and increases the cost of the fire extinguisher. I was invited.

Further, in the combination of the shape-retaining fire hose and the fixed drum, the fire hose can be extended without being twisted. However, since the hose has high rigidity, the hose may be caught at the time of extension. is there.
In these fire extinguisher devices, it is determined that the fire hose can be extended with a force of 15 kg or less, and the condition described in Japanese Utility Model Publication No. 3-32382 is considered to satisfy this condition. However, in the tight situation at the time of fire, no matter how much less than 15 kg, if the fire hose is caught even a little at the time of extension, it is immeasurable to psychological upset given to fire fighting workers The effect on fire extinguishing work is extremely large. In particular, since the fire extinguisher according to the present invention is installed indoors such as in a building, it is often operated by an amateur for initial fire extinguishing, and it is inevitable that the above-mentioned psychological sway is considerably large.

The present invention has been devised in order to solve such a problem, and it is possible to easily increase the mounting strength of the drum, and not to block the evacuation passage at the time of fire extinguishing work, and furthermore, to prevent the evacuation passage from being stopped. It is an object of the present invention to propose a fire extinguisher that can facilitate the operation of feeding a fire hose.

[0009]

According to a first aspect of the present invention, there is provided a fire extinguisher with a fire hydrant box provided with an opening / closing door on a front surface, and a cross-section provided on a rear plate of the fire hydrant box so as to protrude toward the front side of the fire hydrant box. A circular water pipe and a fire hose are wound around the inner peripheral surface in a laminated state, and an inlet connection pipe rotatably fitted with the water pipe is fixedly installed on the back side, so that the water pipe is pivoted. A drum mounted rotatably as a core, and a hose connected to the water supply connection pipe on the base end side and spirally wound sequentially from the outside toward the inside on the inner peripheral surface of the drum. Things.

Here, at least one groove is formed in each of the outer circumference of the water pipe and the inner circumference of the water connection pipe, and the water pipe and the water connection pipe are formed. A bearing ball may be provided in a space formed by arranging the respective grooves at opposing positions, and at least an inner circumferential portion of the water guide connection pipe has at least A configuration may be adopted in which a groove is formed at one location and a waterproofing packing is provided in the groove.

[0011]

In the fire extinguisher according to the present invention, a fire pipe and a fire hose are provided on an inner peripheral surface of a fire hydrant box provided with an opening / closing door on the front, a water pipe protruding from the front of the fire hydrant box, and a fire hose. And a drum rotatably mounted around the water pipe by fixing the installation connection pipe rotatably fitted to the water pipe on the back side. Therefore, the drum is supported at the center of rotation. The hose is connected at its base end to the water connection pipe, and is wound around the inner surface of the drum in a spiral from the outside to the inside. The hose is fed out in order from the center of the drum to the outside. This fire hose is drawn out sequentially from the center of the drum to the outside even if the drum does not rotate, but depending on the direction in which the fire hose is pulled out, the force required for pulling out may increase.
At this time, the drum rotates in an attempt to take a position for feeding out with the smallest force. Further, at least one groove is formed in each of the outer circumferential portion of the water pipe and the inner circumferential portion of the water connection pipe, and the grooves of the water pipe and the water connection pipe are arranged at opposing positions. If the bearing ball is provided in the space defined by the above, the resistance during rotation will be reduced. Furthermore, at least one groove is formed in the inner circumferential portion of at least the water conveyance connection pipe, and if the structure for providing the water shielding packing is provided in the groove, the water conveyance pipe and the water conveyance connection pipe can be used. Between the two is ensured.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. The fire extinguisher 1 of the present invention has a structure in which a fire hose 7 is housed in a fire hydrant box 5 provided with an opening / closing door 3 on a front surface, and a drum 9 on which a fire extinguishing hose 7 is wound around the inner peripheral surface in a stacked state. The water is supplied by a water supply pipe 15 having one end connected to an external water distribution pipe (not shown) and a fire hydrant valve 13 provided in the middle. The fire hydrant box 5 is provided in a buried or projecting manner on a side wall such as a passage of a structure such as a building, and an alarm switch 17, an indicator light 19, and a speaker 21 are arranged on the front surface of the upper part of the fire hydrant box 5. In the upper part of the fire hydrant box 5, an alarm switch 17 is provided.
A warning device (not shown) that issues a warning from the speaker 21 based on the operation of the fire hydrant box 5 is provided inside the fire hydrant box 5, and a housing space 23 for housing the drum 9 is formed in a part other than the upper part thereof. An opening / closing door 3 for opening and closing the accommodation space 23 is attached.

Next, FIGS. 2 and 3 show A-
The main part of A section and the whole figure are shown. The fire extinguishing water from the water supply pipe 15 is supplied to the back plate 24 of the fire hydrant box 5.
The hydrant box 5 is guided to a water pipe 25 having a circular cross section and provided on the front side of the hydrant box 5. This water pipe 15
As shown in the figure, the connection between the
However, a hose may be used as another configuration.

The water pipe 25 has a fire hose 7.
Is rotatably supported on the water guide tube 25 as a support shaft. This shaft support mechanism has a structure in which a water guide connection pipe 29 that is attached to the back side of the drum 9 so as to be non-rotatable is rotatably fitted to the water guide pipe 25.

As shown in the figure, the drum 9 has an opening on the front side, and is wound around the inner space of the drum 9 in a spiral manner from the outside to the inside along the inner peripheral surface of the drum 9. Fire hose 7 is stored. Further, the fire hose 7 has a base end connected to the water guide connection pipe 29 and a water discharge nozzle 31 provided at a distal end.

As described above, in the present invention, the water pipe 25 is provided with both the function of supporting the drum 9 and the function of guiding water to the water discharge hose 7, and as shown in FIG. And grooves 33, 3 formed in the inner circumferential portion of the water connection pipe 29.
The ring 5 is disposed at the opposing position, a ring-shaped space 37 is formed in the pipe of the water pipe 25 and the water connection pipe 29, and a bearing function is provided by mounting a bearing ball 39 in this space 37. . In the structure shown in the figure, the space 37 is provided in two places, but may be provided in one place if smooth rotation performance is obtained, or may be provided in three or more places. In this example, a screw hole 41 is formed to penetrate from the outer peripheral surface of the water connection pipe 29 to the groove 35, and the bearing ball 39 is inserted from the screw hole 41 at the time of assembling. It has a structure with a lid.

A commercially available bearing component can be used in place of the bearing ball 39.
Such a commercially available product is inevitably bulky, and is not desirable for a fire extinguisher device having a small depth because of the restriction that necessary components must be accommodated in a narrow space. In addition, in the case of commercially available bearing parts, measures to prevent rust when water enters the inside thereof are not sufficient, and there is a concern that the bearing parts may rust due to long-term use. On the other hand, in a structure in which the bearing balls 39 are only provided inside the space 37 as in the present invention, the bearing balls 39 need only be made of a material that does not rust, so that it is possible to contribute to improving the reliability and miniaturizing the fire extinguisher 1. become.

Further, a sliding bearing can be used as a configuration which can save more space than the bearing ball 39. However, in terms of the rotational resistance of the drum 9, this configuration using the bearing balls 39 is more preferable.

Further, in order to ensure the water shielding of the connection part, a water shielding packing 47 is provided in a groove 45 formed in the inner circumferential portion of the water guide connection pipe 29. This groove 45
Is required at least one place, but two or more places may be provided in order to further ensure the water shielding. As the packing 47 for waterproofing, a general packing, an O-ring made by Viton, or the like can be used.

The water pipe 25 has an elbow shape for piping, and is screwed to a support plate 51 by a mounting piece 49 provided on the back plate 24 side. The support plate 51 is further screwed to the back plate 24 of the fire hydrant box 5. It is fixed by stopping or welding. The support plate 51 has only to be large enough to mount the water pipe 25. The pipe 27 is connected between the water pipe 25 and the water supply pipe 15 by a connection member 52 generally used for firefighting, such as a screw-type fitting as shown in the figure. Further, the water pipe 25 can be directly fixed to the back plate 24 without the support plate 51 therebetween.

The drum 9 in which the fire hose 7 is accommodated has an opening 53 for feeding out the fire hose 7 on the front side, and an insertion opening 55 for the water connection pipe 29 on the rear side. Near the opening edge of the opening 55,
A part of the attachment piece 57 provided on the base end side of the water connection pipe 29 is overlapped, and the water connection pipe 29 is fixed to the drum 9 by screwing the overlapped portion. By inserting the water guide tube 25 into the inner diameter portion of the water guide connection tube 29, the drum 9 can rotate while being supported by the water guide tube 25.

The fire hose 7 housed in the drum 9
Are sequentially wound spirally from the outside to the inside on the inner peripheral surface of the drum 9, the base end is connected to the water guide connection pipe 29, and the water discharge nozzle 31 is provided at the tip end. The connection of the fire hose 7 to the water connection pipe 29
The connection is made by a connection member 61 generally used for firefighting, such as a hose coupling as shown in the figure.
Further, since the fire hose 7 is sequentially wound spirally from the outside to the inside on the inner peripheral surface of the drum 9, a material having a certain shape retention property is desirable.

The connecting member 61 is connected to the water guide connecting pipe 2.
As shown in FIG. 3, when the fire hose 7 is pulled out to the end, the fire hose 7 is turned toward the opening 55 of the drum 9 by the pulling force of the fire hose 7 as shown in FIG. Move. By this action, the fire hose 7
Can be prevented, and a stable flow path can be secured.

In a fire extinguisher such as that shown as a conventional example, twisting occurs when the fire hose housed in a spiral shape is drawn out. However, in the structure of the present invention, since the drum 9 rotates, the fire is extinguished. The torsion in unwinding the hose 7 can be absorbed by the rotation of the drum 9, that is, by the action of the fire extinguisher itself. Therefore, the degree of freedom of the fire hose 7 to be used is greatly improved. In addition, fire hose 7
Is pulled out at the time of extension, the drum 9 itself rotates in an attempt to take out the fire hose 7 at the optimum position for being extended with the smallest force, without being pulled out with a large force against it. Eventually, the rotation action of the drum 9 substantially eliminates the catch when the fire hose 7 is extended, so that the force required for extending the fire hose can be always constant.

[0025]

According to the fire extinguisher according to the present invention, the following excellent effects can be obtained as described in the section of the operation. In the present invention, a water pipe provided to protrude toward the front side of the fire hydrant box, and a fire hose are wound around the inner peripheral surface of the fire hydrant box in a laminated state on the back plate of the fire hydrant box provided with the opening / closing door on the front. By fixedly installing an introduction connection pipe rotatably fitted in the water pipe on the back side, a drum rotatably mounted around the water pipe as an axis is provided. It will be supported at the rotation center position. Therefore, the drum is not provided with a cantilever structure as in the related art, and an excessive force due to a large moment is not applied to the support portion, so that the mounting strength of the drum can be easily increased.

At the time of fire extinguishing work, the fire hose is drawn out in order from the center of the drum to the outside. However, in the structure of the present invention, the drum is rotated. It can be absorbed by the action of the fire extinguishing device itself, which is a rotation, and the degree of freedom of the fire hose used can be greatly improved. Furthermore, if the fire hose is caught at the time of extension, it does not have to be pulled out with a large force against it,
The drum itself will rotate in an attempt to reach the optimum position for unwinding the fire hose with the least force. Eventually, the rotation of the drum substantially eliminates the catch when the fire hose is drawn out, so that the force required to draw out the fire hose can be kept constant. This is an extremely advantageous effect in using the present fire extinguisher under the tight situation of initial fire extinguishing.

[0027] At least one groove is formed in each of the outer circumference of the water pipe and the inner circumference of the water connection pipe, and the grooves of the water pipe and the water connection pipe are located at opposing positions. The structure in which the bearing balls are provided in the space formed by arranging them can contribute to space saving of the fire extinguisher, reduce the resistance at the time of rotation, and help to improve workability. .

Furthermore, at least one groove is formed at least in the inner circumferential portion of the water connection pipe, and a water blocking packing is provided in the groove. And the water barrier between them can be assured.

In addition, the connecting member provided on the base end side of the fire hose is rotated in the direction of the opening of the drum by the pulling force when the fire hose is pulled out to the end. Can be prevented, and a stable flow path can be secured.

As described above, according to the present invention, the above-mentioned various problems in the conventional fire extinguisher can be solved at once.

[Brief description of the drawings]

FIG. 1 is an explanatory front view showing the entire structure of a fire extinguisher according to the present invention.

FIG. 2 is an explanatory view of a main part showing a structure of a drum supporting portion in the fire extinguishing apparatus of the present invention.

FIG. 3 is an explanatory sectional view showing the entire structure of the fire extinguisher according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Fire extinguisher 3 Opening / closing door 5 Fire hydrant box 7 Fire hose 9 Drum 13 Fire hydrant valve 15 Water supply pipe 17 Alarm switch 19 Indicator light 21 Speaker 23 Housing space 25 Water conduit 27 Pipe 29 Water conduit connection 31 Water discharge nozzle 33, 35, 45 Groove 37 Space 39 Bearing ball 41 Screw hole 43 Screw 47 Waterproof packing 49, 57 Mounting piece 51 Support plate 52, 61 Connection member 53 Feed-out opening 55 Insertion opening

Claims (3)

(57) [Claims] 1. A fire hydrant box provided with an opening / closing door on a front surface thereof; a water guide pipe provided on a rear plate of the fire hydrant box so as to protrude toward the front side of the fire hydrant box; While being wound up,
By fixedly installing the introduction connection pipe rotatably fitted to the water pipe on the back side, the drum rotatably mounted around the water pipe and the base end side are connected to the water connection pipe. A fire extinguisher, comprising: a hose that is sequentially spirally wound from the outside to the inside on the inner peripheral surface of the drum. 2. At least one groove is formed in each of the outer circumferential portion of the water pipe and the inner circumferential portion of the water connection pipe, and the grooves of the water pipe and the water connection pipe are located at opposing positions. The fire extinguisher according to claim 1, wherein a bearing ball is provided in a space formed by arranging the fire extinguisher. 3. At least one groove is formed at least in an inner circumferential portion of the water guide connection pipe, and a water-blocking packing is provided in the groove.
Or the fire extinguisher according to 2.