JPH01247375A - Water discharging device - Google Patents

Abstract

PURPOSE:To prevent the delivery of a hose which is charged with water due to the inadvertent rotation of a reel by providing a friction member on one of a base or a reel contactably/separably with respect to the other and bringing the friction member into pressure contact with the other by the pressure of water which is charged in the hose. CONSTITUTION:Water fed from a water feed pipe 10 passes through the inside of a shaft 3 from a through hole 8 and is sent into a hose 6 from a mounting fixture 7, while partly flows into a cylinder 12 from a branch pipe 11 and presses a piston 13 to press a friction member 14 against a side board 4a, thereby giving friction resistance to the rotation of a rotary reel 2. Thus, since resistance is given to the rotary reel 2, the hose 6 is subjected to water pressure and tends to be extended without causing the rotary reel 2 to rotate to inadvertently deliver the hose 6. Also, in the case of delivering the hose 6 while discharging water, the hose 6 can be delivered over a required length because of the friction resistance applied to the rotary reel 2.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a water spray device, and more particularly to a water spray device used for indoor or outdoor fire hydrants.

The fire hydrant that has been widely used in the past is a fire hose type hose made of a cylindrical woven fabric lined with rubber or the like, folded in a zigzag pattern and stored in a fire hydrant box. When doing this, the entire length of the hydrant had to be taken out of the fire hydrant box and extended, and if the hose became bent, water could no longer be passed through it, making it difficult for inexperienced users to even pass water satisfactorily. .

Therefore, in recent years, there has been a demand for a fire hydrant that can store a hose wound around a winder in a fire hydrant box and allow water to flow through the hose while the hose is wound around the winder.

Conventional Technology This type of fire hydrant is generally made by winding a hose such as a rubber hose that always maintains a circular cross section, but the hose is heavy and thick, making it difficult to remove.
Moreover, the fire hydrant becomes large, which is not desirable.

Therefore, if a conventional fire hose-type port could be wound around a winder and stored in a fire hydrant box, it would be lighter and easier to handle, and the fire hydrant would also be more compact. Hose-type hoses are usually folded flat, and even if you try to pass water through the hose while it is wound around a winder, it will not expand and cannot be used.

As solutions to this problem, the applicant has previously filed Japanese Patent Application No. 62-271500 and Japanese Patent Application No. 62-317152.
No., Japanese Patent Application No. 62-317153, and Japanese Patent Application No. 62-3.
There are inventions filed in applications such as No. 31771.

These winders have a winding frame that can be reduced in the radial direction, and the winding frame shrinks in the radial direction due to the water pressure applied to the hose when water is passed through it, which expands the hose into a cylindrical shape. I am now allowed to do this.

Problems that the invention attempts to solve: These inventions solve the problems that conventionally were wound on reels! By using the above-mentioned fire hose type hose, which could not pass water up to L, it is now possible to pass water while it is wound on a reel, which makes the fire hydrant more compact and allows water to be discharged at high pressure. However, new problems have arisen.

That is, the fire hose type hose is made of a cylindrical woven fabric with a lining on the inner surface, as described above.
The cylindrical woven fabric is made by weaving strong warp and weft yarns into a cylindrical shape, so when the hose is inflated into a cylindrical shape, it is difficult to bend, and when internal pressure is applied, it tends to straighten out. There is a tendency to However, a hose wound on a reel is curved, and when water passes through this hose and internal pressure acts on it, and a force is applied to the hose that tries to extend it in a straight line, that force causes the hose to be unwound from the reel. direction, and the reel begins to rotate in the hose payout direction.

Therefore, when discharging water, the hose may be unwound from the reel and come off the periphery of the reel, or the hose may become sewn and bend locally, causing a kink phenomenon, making it impossible for water to pass through. There is.

This tendency also exists in ordinary rubber hoses, but it is particularly noticeable in fire hose types. In addition, in recent years, a hose with a special fire hose type that can be wound on a reel has been developed by weaving metal wire or synthetic resin bristles into the weft of a cylindrical woven fabric to prevent it from flattening. A lined hose has been proposed and is attracting attention, but the above-mentioned phenomenon is also noticeable in this type of hose.

As a means of solving these problems, it is possible to apply resistance to the rotation of the reel using a brake means to prevent it from rotating accidentally, but the rotational force generated on the reel is proportional to the amount of water pressure applied to the hose. Therefore, if the resistance is too low, there is a risk that the reel will start rotating when high pressure is applied to the hose, while if the resistance is too high, it will be difficult to feed out the hose under low pressure, which will hinder firefighting efforts. Therefore, it is extremely difficult to set the magnitude of the resistance.

The present invention was made in view of the above circumstances, and an object of the present invention is to prevent the reel from rotating carelessly and the hose from being drawn out during water passage.

Means for Solving the Problems The water spraying device of the present invention is a water spraying device in which a reel is rotatably attached to a base and water is passed through a hose wound around the reel through the rotation axis of the reel. A hawking member is provided on one of the table or the reel so as to be able to move into and out of the other, and the hawking member is brought into pressure contact with the other by a driving means driven by the pressure of water flowing through the hose. It is characterized by:

As a specific structure, a cylinder is attached to one of the base or the reel, the friction member is attached to a piston that is movably fitted to the cylinder, and the rotation axis of the reel is communicated with the cylinder. can.

As another specific structure, a cylindrical body may be attached to one of the base or the reel, a flexible expanded pA body may be attached to the end of the cylindrical body, and the rotation axis of the reel may be communicated with the cylindrical body. can.

As another structure, a branch pipe may be attached to the rotating shaft of the reel, an expandable and deflated balloon may be attached to the tip of the branch pipe, and the m-vessel may be interposed between the base and the reel.

As another more preferable specific structure, the rotating shaft is integrally fixed to the reel, the reel is attached to the rotating shaft so as to be rotatable and slidable in the axial direction, and a through hole is bored in the rotating shaft. At the same time, the outer diameter of the rotating shaft on both sides of the through hole is made different, and the cylindrical body fixed to the reel is sealed at a portion of the rotating shaft with a different diameter on both sides of the through hole, and the small diameter of the rotating shaft is made different. One example is a structure in which the friction member is fixed to a rotating shaft near the side surface of the reel.

Function In the present invention, when water is not flowing through the hose, the friction member provided on one of the base or the reel does not come into contact with the other, and the reel can be freely rotated with a small force.
The hose can be let out and reeled in as needed.

When water is passed through the hose, a portion of the water is supplied to the drive means, and the friction member comes into contact with the other member to provide frictional resistance to the rotation of the reel. Therefore, while the water pressure applied to the hose is low, the force with which the friction member is pressed against the other member is small, giving a small frictional resistance to the rotation of the reel, and when the water pressure increases, the friction member is also pressed with a large force. Provides large frictional resistance.

Example Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows an embodiment of the water spraying device of the present invention. Reference numeral 1 denotes a base, on the side of which a rotary roll 2 is rotatably supported. This rotary wheel 2 includes a shaft 3 rotatably supported on the base 1, and side plates 4a, 4 integrally attached to opposite ends of the shaft 3.
b, and the side plate 4a.

4b, and a hose 6 is wound around this end 5. The shaft 3 is a hollow tube, and a metal fitting 7 is provided between the side plates 4a and 4b for attaching the hose 6, and a fitting 7 is provided between the side plates 4a and 4b to connect the base 1 and the side plate 4a.
A through hole 8 is bored between the two. A pipe body 9 is fitted so as to cover the through hole 8, and a water pipe 10 is fitted into the pipe body 9.
and a branch pipe 11 are attached, and the tip of the branch pipe 11 is connected to the base 1.
The cylinder 12 is connected to the cylinder 12 fixed to the cylinder 12 . A piston 13 is fitted into the cylinder 12,
A friction member 14 is housed in the piston 13, and the friction member 14 is located very close to the side surface of the side plate 4a of the rotary roll 2.

When water is introduced from the water pipe 10, the water flows through the through hole 8.
from inside the shaft 3, and install from the metal fitting 7 to the hose 6.
At the same time, a part of it flows into the cylinder 12 from the branch pipe 11, pushes the piston 13, and pushes the friction member 14.
is pressed against the side plate 4a to provide frictional resistance to the rotation of the reel 2.

FIG. 2 shows another embodiment, in which the tip of the branch pipe 11 is connected to the base 1.
It communicates with a cylindrical body 15 fixed to the cylindrical body 15, and a flexible expansion body 16 as a friction member is attached to the tip of the cylindrical body 15.

This inflatable body 16 is made of, for example, a sheet of flexible base cloth lined with rubber or synthetic resin, and this sheet is airtightly attached to the tip of the cylinder 15. Then, by pressurizing the inside of the cylinder 15 with water pressure, it expands, and the side plate 4a
It is pressed against the side of the

FIG. 3 shows still another embodiment, in which a shaft 3 is fixed to a base 1, and side plates 4a, 4b are attached to the shaft 3.
is rotatably supported, and a metal fitting 7 for attaching the hose 6 is rotatably attached to the center of the shaft 3.

Further, a branch pipe 11 is attached to a position between the base 1 and the side plate 4a of the shaft 3, and a balloon 17 that can be expanded and contracted as a friction member is airtightly attached to the tip of the branch pipe 11. ing.

Therefore, the balloon 17 is normally deflated and the base 1 and side plate 4a
When water is introduced into the shaft 3, the water is sent to the hose 6 and a part of it is press-fitted into the balloon 17 through the branch pipe 11, thereby inflating the balloon 17.

Then, the balloon 17 comes into pressure contact with the base 1 and the side plate 4a and is squeezed between them, providing frictional resistance to the rotation of the rotary reel 2.

In each of the above embodiments, the friction members 14, 16, 17
are both fixed to the base 1, but they may also be fixed to the rotary reel 2. FIG. side plate 4
and a branch pipe 11 fixed to the shaft 3.
The tip of the cylinder 12 is connected to the cylinder 12, and the cylinder 12 is fixed to the side surface of the side plate 4a.
Friction member 14 attached to piston 13 fitted to
are placed close to the base 1. In this example, the cylinder 12 rotates together with the rotary reel 2, and the friction member 14 is pressed against the base 1, thereby providing frictional resistance to the rotation of the rotary reel 2.

Effects of the Invention According to the present invention, since resistance is provided to the rotation of the rotary reel 2, water pressure is applied to the hose 6 and the port 6
Even if a rotational force is applied to the rotary reel 2 in the direction in which the hose 6 is fed out by trying to extend in a straight line, the rotational force is suppressed by the resistance, and the rotary reel 2 rotates and the hose 6
is not carelessly fed out, and the hose 6 is not sewn or kink occurs.

Moreover, the amount of resistance to the rotation of the rotating reel 2 is proportional to f to the water pressure applied to the hose 6, so if high pressure is applied to the hose 6 and the rotational force applied to the rotating reel 2 increases, the resistance will increase accordingly. , rotation of the rotating reel 2 can be reliably prevented.

Also, when pulling out the hose 6 while discharging water,
By pulling , the rotary reel 2 is rotated against the frictional resistance applied to the rotary reel 2, and the hoses 6 can be drawn out to the required length. Moreover, the force required to pull out the hose 6 is a force corresponding to the difference between the resistance to rotation of the rotary reel 2 and the rotational force of the rotary reel 2 generated by pressurizing the hose 6, and the magnitude of the resistance is as described above. Since it is proportional to the pressure applied to the hose 6, even if the pressure being sent to the hose 6 is small, an unnecessarily large resistance is not applied, and it can be pulled out with a small force.

Further, if the water pressure is removed after water is discharged, the frictional resistance applied to the rotary reel 2 disappears, and the rotary reel 2 can rotate freely. Therefore, the hose 6 that has been pulled out can be wound onto the rotating reel 2 again.

[Brief explanation of the drawing]

FIGS. 1 to 4 are central vertical sectional views showing water spraying devices according to embodiments of the present invention, respectively. 1... Base 2... Rotating reel 3... Shaft 4a, 4b...
... Side plate 6 ... Hose 11 ...
... Branch pipe 12 ... Cylinder 13 ...
... Piston 14 ... Friction member 15 ...
... Cylinder 16 ... Expanding body (friction member) 17 ... Balloon < 0 friction member)

Claims (1)

[Claims] 1. A water discharge device in which a reel (2) is rotatably attached to a base (1) and water is passed through a shaft (3) of the reel (2) to a hose (6) wound around the reel (2), Friction members (14, 16, 17) are provided on one of the base (1) or the reel (2) so as to be movable relative to the other, and the pressure of the water flowing through the hose (6) is adjusted. The friction members (14, 1
6, 17) is brought into pressure contact with the other one.