JP2885114B2 - Ceiling mounted fire hydrant - 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 hydrant system installed on a ceiling.

[0002]

2. Description of the Related Art Conventionally, as a ceiling-installed fire hydrant equipment to be installed on a ceiling, a type in which a hose reel wound with a fire hose is installed on the back side of a ceiling plate has been generally used. This type of ceiling-mounted hydrant is usually hidden behind the ceiling panel by an opening / closing door provided on the ceiling panel, and the operating part of the fire hydrant that controls the main valve of the hydrant is usually operable by humans. On the wall. At the time of fire extinguishing, the operating section is operated to open the main valve of the fire hydrant, and at the same time, by opening the opening / closing door provided on the ceiling plate, the hose reel is rotated down and down below the ceiling plate. The fire hose wound on the hose reel is extended in the direction of the fire extinguishing target to discharge water.

[0003] Such a fire hydrant of the ceiling installation type requires an operation of opening a door provided on a ceiling plate at the time of fire extinguishing. However, since this door is located on the ceiling,
Normally, people cannot directly touch this door. Therefore, a conventional ceiling-mounted hydrant has a configuration as shown in FIG. That is, the normally open door door a is held closed by engaging the locking piece b provided on the back surface of the ceiling plate, and the locking piece b can be operated by the wire c. By operating one end of the wire c positioned at a place where a person can operate, the engagement with the door a is released, the door a is opened, and the hose reel A is exposed.

[0004]

As described above, the opening and closing door of a conventional ceiling-mounted fire hydrant is held in a closed state by a locking piece provided on the back surface of the ceiling plate. The door cannot be opened unless the piece and the door are disengaged. In other words, when the operation of the locking piece by the wire becomes impossible due to the wire being corroded and stuck or being cut off by a mouse or the like, the locking piece on the back surface of the ceiling plate is Since there is no means for disengaging, the door cannot be opened to use the fire hydrant. And it is quite possible that the wire cannot be used for various reasons, and if a fire actually occurs, the fire cannot be extinguished because the fire hydrant is not available despite its existence. It can lead to devastating damage to people.

[0005] In addition, when the door is opened, the main valve of the fire hydrant is usually opened. Therefore, if the opening of the door and the opening of the main valve of the fire hydrant can be integrated into one mechanism, the structure can be simplified. It is convenient.

On the other hand, the conventional ceiling-installed fire hydrant uses a hose reel for storing a fire hose, so that the weight is heavy. Had a structure. As a result, the locking portion of the opening / closing door supports the entire weight of the hose reel, and the locking by the locking portion has to be strong. In addition, a heavy and complicated hose reel is often inconvenient to install on a ceiling. Also, the main purpose of the hose reel is to compact the fire hoses, but unlike the fire hydrant box provided on the wall, a relatively large space can be obtained on the back of the ceiling plate, so the ceiling-mounted fire hydrant It is considered that there is not much benefit in using a hose reel. Further, the hose reel has a constraint that the feeding direction of the fire hose must be substantially perpendicular to the rotation axis of the hose reel.

Therefore, the present invention provides a ceiling-installed fire hydrant that can open the opening and closing door by opening the main valve, as well as opening the opening and closing door from below the ceiling as needed. It is an object of the present invention to provide a fire hydrant hose storage section suitable for a stationary hydrant.

[0008]

In order to achieve the above object, a ceiling-mounted fire hydrant according to the present invention first has a locking portion for holding a door closed in a state of being attracted by a magnet. . And, in order to open the door, a door push-opening mechanism is provided on the back side of the ceiling plate, which includes a cylinder branched to and connected to a fire hydrant pipe, a piston that can be fitted into the cylinder, and a pressing body that is linked to the piston. . The position where the door pushing and opening mechanism is provided is such that the pressing body does not hit or touch the opening / closing door when the piston is contracted, and the pushing body pushes the opening / closing door when the piston is extended.

The locking portion may hold the opening / closing door by being fixed by fitting.

The ceiling-mounted hydrant is provided with a main valve electrically connected to a fire alarm, and the main valve of the ceiling-mounted fire hydrant is opened in conjunction with the operation of the fire alarm. It is desirable to be done.

[0011]

[0012]

In the ceiling-mounted fire hydrant having the above structure, the opening / closing door is held closed by fitting or magnetic force by the locking portion. Then, at the time of fire extinguishing, when the main valve is opened to discharge water, since the pipe branches to the cylinder of the door pushing and opening mechanism, water enters the cylinder and pushes it out by applying pressure to the piston. As a result, the pressing piece interlocking with the piston pushes the opening / closing door to release the locking of the locking portion and open the opening / closing door. And after fire extinguishing,
After closing the main valve of the fire hydrant and pushing up the pressing body of the door pushing and opening mechanism where the water pressure to the piston is no longer applied, the hose is stored in the protection hose storage part, and the opening and closing door is pushed up from below to lock it. The unit keeps the door closed again.

Further, a main valve which is electrically opened and is connected to a fire alarm is provided in the ceiling-mounted hydrant, and the main valve of the ceiling-mounted hydrant is opened in conjunction with the operation of the fire alarm. Then, when a sensor detects a fire in the event of a fire or when a fire alarm is activated by a human being, the main valve is opened and the opening / closing door is opened by the above operation.

[0014]

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing a ceiling-mounted hydrant according to the present application,
FIG. 2 is a cross-sectional view of the ceiling-mounted fire hydrant according to the present application.
The ceiling-mounted fire hydrant includes a main valve 1 connected to a pipe x of the fire hydrant, a shape-preserving fire hose 2 connected to the main valve 1,
A fire hose storage box 3 around which the fire hose 2 is wrapped, a door pushing and opening mechanism 4 branched from and connected to the main valve 1, and a lower side of a hose outlet of the fire hose storage box 3, which will be described later. It is provided with an opening / closing door 5 and is suspended and fixed to a ceiling slab S.

The main valve 1 of the fire hydrant can be opened and closed by a pilot valve 1a.
Is configured to operate so as to open the main valve 1 by pulling the wire 1b in the direction of arrow p.

The fire hose storage box 3 is a drum-shaped box, and has a hose outlet 3a on its lower surface as shown in FIG.
And the fire hose 2 is wound inside. The fire hose storage box 3 is provided with a substantially cylindrical drop prevention member 3b on the upper surface side of the hose outlet 3a, and a donut having substantially the same width as the fire hose is provided above the opening of the fall prevention member 3b. A ring-shaped restricting body 3c is provided at a position where a space 3c 'is formed.

FIG. 3 is an enlarged sectional view of the vicinity of the door pushing / opening mechanism 4. As shown in FIG. 3, the opening / closing door 5 has one edge rotatably fixed to a hinge 5a on the lower surface of the fire hose outlet 3a, and another door facing the one edge provided with the hinge 5a. The opening and closing door is kept closed by the suction section 5b having a rim formed by a magnet and fixed by suction near the fire hose storage box.

As shown in FIG. 3, the door pushing / opening mechanism 4 includes a cylinder 4a branched and connected to a fire hydrant pipe, and a piston 4b which can be fitted into the cylinder 4a.
And a pressing body 4c interlocked with the piston 4b,
Normally, as shown in FIG. 3, the piston 4b is in a contracted state, and the pressing body 4c does not hit the upper surface of the door 5, but when the piston 4b is extended, the pressing body 4c linked to the piston 4b opens and closes. The position is set such that the upper surface of the door 5 can be pushed. As shown in FIG. 3, the door pushing and opening mechanism 4 is provided with a nozzle holder 2a to hold the nozzle of the fire hose 2 and the nozzle of the fire hose 2 is not shown. It is tied to one end of the string 2b which is not used.

FIG. 4 shows how a fire hydrant mounted on a ceiling is attached. As shown in FIG. 4, a wire 1b for opening and closing the main valve 1 of the fire hydrant is connected to the fire hydrant operation box 6 from the back surface of the ceiling plate through the back surface of the wall surface. FIG. 5 shows a view A in FIG. 4, that is, a front view of the fire hydrant operation box 6. As shown in FIG. 5, the fire hydrant box 6 is provided with an operation lever 6a,
By turning the operation lever 6a, the wire 1b can be pulled. Explaining in detail, the fire hydrant operation box 6
Is provided with a link mechanism 6b as shown in FIG. 6, and the link mechanism 6b is operated by turning the operation lever 6a from the state shown by the solid line in the figure to the state shown in the imaginary line in the figure. Thus, the wire 1b is pulled so as to open the main valve 1. Then, when the operating lever 6a is returned to the original state, the restriction of the main valve 1 of the wire 1b to the pilot valve 1a is released, and the main valve 1 is closed.

The mode of use of the ceiling-mounted hydrant having the above configuration will be described below. First, the mode of use of the door pushing / opening mechanism 4 and the door 5 will be described. In a normal state, the door 5 is held in a closed state by the attraction of the locking portion 5b by the magnet. Assuming that a fire has occurred in this state, first, the operation lever 6a of the fire hydrant operation box 6 is turned in the direction in which the wire 1b is pulled. Then, the wire 1b moves the pilot valve 1a of the main valve 1 of the fire hydrant so that the main valve 1 is opened. Thereby, the main valve 1 opens and water flows into the fire hose 2 through the pipe x. At the same time, water also flows into the cylinder 4a of the door pushing and opening mechanism 4 which is branched from and connected to the main valve 1, and the piston 4 in the cylinder 4a
Pressure is applied to b. Eventually, the piston 4b is pushed by water pressure to extend, and the pressing body 4c interlocking with the piston 4b presses the back surface of the door 5. The opening / closing door 5 has a locking portion 5
Since the fixing part 5b is merely fixed by the suction of the magnet b, the locking of the locking part 5b is easily released by the pressing of the pressing piece 4c, and the opening and closing door 5 is opened as shown in FIG. When the door 5 is opened, the lower end of the cord 2b having one end connected to the nozzle of the fire hose 2 falls downward from the ceiling surface as shown in FIG. The fire extinguisher pulls the other end of the dropped string body 2b, pulls the nozzle of the fire hose 2 held in the nozzle holder 2a from the nozzle holder 2a, drops it, and holds the nozzle to fire the fire. The fire hose is pulled out from the fire hose storage box 3 to the fire site to extinguish the fire.

When the fire extinguishing is completed, the operating lever 6a of the fire hydrant operation box 6 is returned to the initial state, and the main valve 1 of the fire hydrant is closed. Then, the pressing body 4c of the door pushing and opening mechanism 4 is pushed in,
The fire hose 2 is housed in the fire hose storage box 3 while draining water from the hose. Then, the door 5 is closed to lock the locking portion 5b, and the door 5 is held in the closed state and returned to the initial state.

Since the door 5 is merely held closed by the attraction of the locking portion 5b by the magnet, in the event of a fire, the door push-open mechanism 4 should be broken or the fire hydrant should be inspected. In the case of repair or repair, the opening and closing door 5 can be opened even from below the ceiling surface.

Next, the mode of use of the fire hose storage box 3 will be described. First, when the fire hose 2 is stored in the fire hose storage box 3, the inside of the fire hose storage box 3 is inserted through the hose outlet 3 a. The fire hose 2 is re-poured. At this time, the fire hose 2 passes through a donut-shaped gap 3c 'formed by the upper edge of the fall prevention body 3b and the ring-shaped restricting body 3c and having substantially the same width as the diameter of the fire hose 2. . Then, the fire hose 2 drawn into the fire hose storage box 3 is spirally placed around the hose outlet 3a. Since the fire hose 2 has elasticity, it tends to spread out when it is spirally wound, so that the fire hose 2 is pushed into the fire hose storage box 3 while pressing the inner wall of the fire hose storage box 3. It will be recirculated.

When the fire hose 2 stored in the event of a fire is drawn out from the fire hose storage box 3, the fire hose 2 is pulled out by holding the nozzle of the fire hose 2 as described above. 2 is fed out through a gap 3c ′ having a donut shape having substantially the same width as the outer diameter of the fire hose 2 described above. Thereby, the movement of the fire hose 2 is moderately braked, and the fire hose can be prevented from moving randomly in the fire hose storage box 3. Further, since the fall prevention member 3b is provided on the upper surface side of the hose outlet 3a, a part of the fire hose does not fall from the hose outlet.

In this embodiment, the opening and closing of the main valve 1 of the fire hydrant is operated by the wire 1b. However, as shown in FIG. 8, the main valve 1 of the fire hydrant is provided in the wall surface. If the main valve 1 is opened and closed directly by the operation lever 6a 'of the fire hydrant operation box 6', the wire 1b
Can be eliminated. In this way, if the configuration is such that the wire is unnecessary, an unexpected situation may occur such that the wire 1b is corroded and becomes inoperable, or may be cut off by a mouse or the like, so that the plug cannot be opened. Can be prevented and is very useful.

Further, in the ceiling-mounted fire hydrant according to the present invention, the opening / closing door 5 can be opened in conjunction with a fire alarm. That is, as shown in FIG. 9, the main valve 1 of the ceiling-mounted hydrant is an electromagnetic valve so that it can be electrically operated, and the main valve 1 serving as the electromagnetic valve is connected to the fire alarm A, and the main valve 1 is opened. Is set to be linked with the operation of the fire alarm A. That is, when the fire alarm A issues an alarm at the time of a fire, the main valve 1 is opened. With such a configuration, a fire occurs and the sensor detects the fire, or a fire alarm A
Is activated and an alarm is issued, the main valve 1 as an electromagnetic valve is opened. When the main valve 1 is opened, the pipe x
Water flows into the fire hose 2 and also flows into the cylinder 4a of the door pushing and opening mechanism 4 to apply pressure to the piston 4b in the cylinder 4a, and the piston 4b is pushed by the water pressure to extend, The pressing body 4c interlocking with the piston 4b presses the back surface of the door 5 to release the locking of the locking portion 5b, and the door 5 is opened. In this way, the door 5 is automatically opened in the event of a fire, so that an effect of informing a person below the ceiling of the position of the ceiling-mounted fire hydrant in the event of a fire can also be obtained.

In this embodiment, the locking portion 5 of the door 5
Although the locking of b is performed by suction by a magnet, it may be fixed by fitting as shown in FIG. 10A. That is, the opening and closing door 5 can be held in a closed state, and the door can be held from above the ceiling surface. Any fixing type can be used as long as it can be opened by pressing by the push-open mechanism 4.

Further, as the locking portion 5b, a magnet type push latch as shown in FIG. 10B can be used. The magnet-type push latch is held in a contracted state when it is pushed and contracted from an extended state, and when it is further pushed in from this contracted state, it returns to its original extended state even after being disengaged. When this is used for the locking portion 5b of the door 5, when the door 5 is closed, the magnet type push latch holds the door 5 in a contracted state, and the door pushing / opening mechanism 4 Even when the door does not work, the push-up door 5 is pushed upward from below the ceiling surface to extend the magnetic push latch, and the inertia of the open-close door 5 which moves downward by the extending force of the magnetic push latch. The locking of the magnet type push latch by the magnet is released by the force, and the opening / closing door 5 is opened. Similarly, a push latch may be used which is fitted when pressed from the open state as shown in FIG. 10 (c) and released when pressed in this state.

Further, the opening and closing door 5 of this embodiment has a structure in which a hinge 5a is provided on one edge, and a locking portion 5b is provided on another edge opposite to the one edge provided with the hinge 5a. However, this is a double door-type door 5 as shown in FIG.
The locking portion 5b may be provided at an arbitrary position where the opening / closing door 5 can be held in a closed state using FIG.
As shown in (b), an opening / closing door 5 in which the entire door descends in parallel may be used, and a locking portion 5b may be provided so that the door can be held on the ceiling surface. And the door 5
It is needless to say that the position for providing may not be provided on the lower surface of the fire hose storage box 3 as in the present embodiment, but may be provided directly on the ceiling plate.

The concept of opening the door 5 by the water pressure according to the present invention can be easily applied to a conventional door. For example, as shown in FIG. 12, a locking member 4c 'is linked to a piston 4b', and the piston 4b 'is
a ′, and the water inlet 4d ′ of the cylinder 4a ′ is branched to the pipe of the fire hydrant to communicate therewith.
When the main valve 1 is opened, water flows into the cylinder 4a 'from the water inlet 4d', and the water pressure causes the piston 4b 'to slide in the direction of the arrow q, thereby engaging with the piston 4b'. The body 4c 'also slides in the direction of arrow q, whereby the engagement of the locking body 4c' with the door 5 is released, and the door 5 is opened by its own weight. Thus, if the conventional opening and closing door is also opened and closed using the water pressure of the fire hydrant, there is also a benefit that the main valve 1 and the opening and closing door 5 can be simultaneously opened.

Next, the fire hose storage box 3 will be described. In the embodiment of the present invention, the fire hose storage box 3 is a drum-shaped box, has a hose outlet 3a on the lower surface, and a substantially cylindrical drop prevention body 3b is provided on the upper surface side of the hose outlet 3a. A donut-shaped gap 3c 'having substantially the same width as the fire hose is provided above the opening of the fall prevention body 3b.
The ring-shaped restricting body 3c is provided at a position where is formed, but various components can be employed.

That is, the fire hose storage box 3 can be of any shape as long as the fire hose 2 can be wrapped around it. Can also be planned. Furthermore, it is also possible to use the back surface of the ceiling plate as the bottom plate of the fire hose storage box 3. The hose outlet 3a is also a hole communicating from the upper surface to the lower surface of the bottom plate of the fire hose storage box 3, and is at least larger than the outer diameter of the fire hose 2.
Any shape, size, and position can be adopted according to circumstances.

The fall prevention member 3b may have a cylindrical upper edge that is substantially circular and a side surface that prevents the fire hose 2 from falling.
A combination of rods may be used, and the shape does not matter. Further, the ring-shaped restricting body 3 may have a substantially circular portion where the donut-shaped gap 3c 'is formed, and the donut-shaped gap 3c' may be used to connect the fire hose 2 to the fire hose storage box 3.
When the fire hose 2 is pulled out from the fire hose, any fire hose 2 of any width and shape can be used as long as the hose is appropriately braked. That is, by appropriately changing the size and the positional relationship between the fall prevention member 3b and the regulating member 3, an optimum donut-shaped gap 3c 'can be adopted according to the elasticity and frictional resistance of the fire hose 2.

For example, FIG. 13A shows the relationship between the fall prevention member 3b and the regulating member 3 shown in this embodiment. In this case, the lower edge of the restricting body 3c is located substantially in the same plane inside the upper edge of the fall prevention body 3b. In addition, FIG.
As shown in (b), the lower edge of the regulating body 3c is
If the lower edge of the regulating body 3c is located inside and above the upper edge of the fall prevention body 3b, as shown in FIG. As shown,
When the lower edge of the restriction body 3c is located above the upper edge of the fall prevention body 3b with substantially the same outer diameter as the upper edge of the fall prevention body 3b, FIG.
As shown in FIG. 3 (e), when the lower edge of the regulating body 3c is located almost in the same plane outside the upper edge of the fall prevention body 3b, FIG.
As shown in FIG. 3F, when the lower edge of the restricting body 3c is located outside and above the upper edge of the fall prevention body 3b, as shown in FIG. The case where it is located outside and below the upper edge of the body 3b is considered. Among them, the one shown in FIG. 13 (g) has the strongest braking force against the fire hose 2 and sequentially shown in FIG. 13 (e), FIG. 13 (f), FIG. 13 (b), FIG. FIG. 13 (a), FIG.
Since the braking force becomes weaker in the order of (c), an appropriate combination may be selected as needed. Further, by making the fall prevention member 3b and the restriction member 3 rotatable in a horizontal plane, it is possible to reduce the resistance when the fire hose 2 is extended while maintaining the braking force. The regulating body 3 has a door pushing / opening mechanism 4 at the center thereof. However, if the door pushing / opening mechanism 4 is provided at a position other than the center of the regulating body 3, the ring-shaped regulating body 3 The inside may be solid.

[0036]

According to the present invention, the following effects can be obtained by the above configuration. First, since the open / close door is held in a closed state by fixation by fitting or adsorption by a magnet, the door can be opened even from below the ceiling surface,
In particular, even if the door is not automatically opened due to a failure or the like in the event of a fire, the fire door can be used by forcibly opening the door from below the ceiling surface.

The structure can be simplified by adopting a structure in which the opening and closing doors are simultaneously opened by utilizing the water pressure when supplying water from the main valve to the fire hose.

Further, the ceiling-mounted hydrant is provided with a main valve that is electrically opened and connected to a fire alarm, and the main valve of the ceiling-mounted hydrant is opened in conjunction with the operation of the fire alarm. If a fire alarm is activated during a fire, the main valve of the ceiling-mounted hydrant is opened and the door is opened at the same time, so that people on the floor can easily know the position of the hydrant. In addition, it is possible to prevent a situation in which the initial fire extinguishing cannot be performed because the position of the fire hydrant cannot be found while the fire hydrant is present at the time of the fire. In addition, since the work process of opening the opening and closing door and the work process of opening the main valve can be omitted, it is possible to contribute to speeding up the fire fighting activity, which takes only seconds.

[0039]

[0040]

[0041]

[Brief description of the drawings]

FIG. 1 is a perspective view showing a ceiling-mounted hydrant according to an embodiment.

FIG. 2 is a sectional view of a ceiling-mounted hydrant according to the embodiment.

FIG. 3 is an enlarged sectional view of the vicinity of a door pushing and opening mechanism according to the embodiment.

FIG. 4 is a cross-sectional view showing a mounted state of a ceiling-mounted hydrant according to the embodiment.

FIG. 5 is a front view of a fire hydrant operation box according to the embodiment.

FIG. 6 is a sectional view showing the internal structure of the fire hydrant operation box according to the embodiment.

FIG. 7 is a cross-sectional view showing a state in which the opening / closing door of the ceiling-mounted fire hydrant according to the embodiment is open.

FIG. 8 is a cross-sectional view showing another example of a ceiling-mounted hydrant according to the embodiment.

FIG. 9 is a cross-sectional view showing an application example of the ceiling-mounted hydrant according to the embodiment.

FIGS. 10A, 10B, and 10C are cross-sectional views showing examples of an engaging portion of the door.

FIGS. 11A and 11B are perspective views each showing an example of an opening / closing door.

FIG. 12 is a sectional view showing an application example of the door pushing and opening mechanism according to the present invention.

13A to 13G are diagrams illustrating examples of the positional relationship between the fall prevention member and the regulating member.

FIG. 14 is a cross-sectional view showing a conventional ceiling-mounted fire hydrant.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Main valve 2 Fire hose 3 Fire hose storage box 3a Hose take-out port 3b Fall prevention body 3c Regulator 3c 'Donut-shaped gap 4 Door push-open mechanism 4a Cylinder 4b Piston 4c Press body 5 Opening door 5a Opening door hinge 5b Locking part 6 Fire hydrant operation box x Piping

Continuation of front page (58) Field surveyed (Int. Cl. ⁶ , DB name) A62C 27/00-39/00 E04B 9/00

Claims (3)

(57) [Claims] 1. A fire hydrant mounted on a ceiling having an opening / closing door on a ceiling, comprising: a locking portion which is held in a closed state by suction by a magnet provided on the opening / closing door; and a cylinder branched and connected to a pipe of the fire hydrant. A door push-open mechanism comprising a piston that can be fitted into the cylinder and a pressing body interlocking with the piston, wherein the door push-open mechanism is pressed on the upper surface side of the opening / closing door when the piston is contracted. Does your body hit the door,
Or, a fire hydrant mounted on a ceiling, which is set at a position where the pressing body pushes open the opening / closing door when the piston is extended. 2. A ceiling-mounted fire hydrant having an opening / closing door on a ceiling, comprising: a locking portion provided on the opening / closing door and held in a closed state by fixing by fitting; and a cylinder branched and connected to a pipe of the fire hydrant; A piston that can be fitted into the cylinder, and a door pushing and opening mechanism that includes a pressing body that is interlocked with the piston, wherein the door pushing and opening mechanism is located on the upper surface side of the opening / closing door when the piston is in a contracted state. The pressing body does not hit the door,
Or, a fire hydrant mounted on a ceiling, which is set at a position where the pressing body pushes open the opening / closing door when the piston is extended. 3. A main valve connected to a fire alarm which is electrically opened, wherein a main valve of a ceiling-mounted fire hydrant is set to be opened in conjunction with the operation of the fire alarm. The ceiling-mounted hydrant according to claim 1 or 2.