JP5020166B2 - Fire extinguisher gas injector - Google Patents

Description

  The present invention is suitable for a simple fire extinguisher for home use or office use, for example, and simply breaks a loaded small gas cylinder to temporarily stop the outflow of the fire extinguishing gas, thereby preventing the waste of the fire extinguishing gas. In addition to ensuring effective use and effective fire extinguishing, fire extinguishing gas is reliably and accurately injected toward the fire source during extinguishing, realizing effective and effective fire extinguishing and reliable initial fire extinguishing, and being small and lightweight. The present invention also relates to a fire extinguishing gas injector that can be manufactured at low cost.

For example, a general fire extinguisher installed in a home or office has a problem that it is large and heavy, requires an arm for a fire extinguishing operation, and is generally difficult to use.
For this reason, various small and lightweight simple fire extinguishers have been proposed in the past as means for solving the above problems (see, for example, Patent Documents 1 to 3).

  However, the fire extinguisher requires an operation of opening the nozzle hole toward the fire source, and at the fire site, it is difficult to direct the nozzle hole to the fire source accurately because it is upset and inaccurate at hand. As a result, there has been a problem that the blown-out gas after being broken is wasted or cannot be effectively injected into the fire source, and the effectiveness of initial fire fighting cannot be increased.

  In order to solve such a problem, the applicant arranges a tear-off holder to which a tear-off member is attached and a cylinder holder having a through hole for movably accommodating the tear-off member, in a vertically spaced manner. The cylinder holder is pushed up at the time of sealing, and the breaking member is pierced into the sealing plate of the gas cylinder so as to be capable of being broken, while the breaking holder is formed with a communication path communicating with the through hole and a guide hole opened to the outside, A control valve equipped with a valve rod and an internal valve is attached to the communication path, and the control valve is normally closed, and extinguishing gas ejected from the gas cylinder due to breakage is stored in the communication path to prevent the cost of fire extinguishing gas. At the time of fire extinguishing, the valve rod is pushed down via the operation lever, the inner valve is operated, the control valve is opened, the fire extinguishing gas including the stored gas is reliably ejected toward the fire source, and the initial fire extinguishing is performed. We have developed a fire extinguishing gas injector that can effectively Is (e.g., see Patent Document 4).

  However, the fire extinguisher gas injector requires a smashing holder, outer housing, push rod, pin, etc., and has a large number of parts, and the structure is complicated, making it difficult to reduce the cost and size and weight. In addition, the control valve is complicated and expensive, and the fire extinguishing gas injector is expensive.

JP-A-9-103512 JP 2000-189534 A Japanese Patent No. 2890097 JP 2007-330775 A

  The present invention solves such a problem, and is suitable for a simple fire extinguisher for home use or office use, for example, and simply breaks a loaded small gas cylinder to temporarily prevent the outflow of fired fire extinguishing gas. In addition to preventing gas waste and effective use and extinguishing of gas, fire extinguishing gas is reliably and accurately injected toward the fire source during fire extinguishing, realizing effective and effective fire extinguishing and reliable initial fire extinguishing. Another object of the present invention is to provide a fire extinguishing gas injector that is small and lightweight and can be manufactured easily and inexpensively.

The invention according to claim 1 is a gas cylinder in which a fire extinguishing gas is pressurized and filled, and a sealing plate is attached to the opening thereof, a case capable of accommodating the gas cylinder, and a tip portion capable of breaking the sealing plate A nozzle hole that is detachably attached to the mouth portion of the gas cylinder and has a guide hole in which the guide member that accommodates the rupture member is movably accommodated, and the guide hole is opened to the outside The control valve is provided in a communication path between the guide hole and the nozzle hole so as to be movable up and down, and the control valve is urged to move upward, and an operation lever is provided at the upper end of the control valve. An intermediate portion of − is disposed so as to be engageable, and the communication path is provided to be able to be intermittently connected through the movement of the control valve, while a valve hole communicating with the guide hole is formed inside the cylinder holder. The control valve is slidable Only the guide holes in the fire extinguishing gas injectors and a larger diameter than the valve hole, apart from the two O-ring on the peripheral surface of the control valve in the vertical mounting, the front Yabufu lower O Position the ring at the inner edge of the nozzle hole, close the nozzle hole and close the valve hole through the upper O-ring. When breaking, connect the upper O-ring to the inner edge of the nozzle hole. The nozzle hole is closed, the lower O-ring is positioned in the guide hole, and a fire extinguishing gas can be stored in the guide hole, and the nozzle hole is closed by the lower O-ring before breaking. The upper O-ring closes the valve hole, seals the nozzle hole and the valve hole, and at the time of breakage, the upper O-ring closes the nozzle hole so that the extinguishing gas can be stored in the guide hole. Fire extinguishing gas Prevents release, thereby preventing the wasting of extinguishing gas, and simplify the reduction constitutes a number of parts, and can be easily and inexpensively manufactured by small and light.

In the invention of claim 2, after the rupture, the two O-rings are positioned above and below the nozzle hole, the valve hole is closed through the upper O-ring, and the lower O-ring is positioned in the guide hole, The guide hole communicates with the nozzle hole so that the fire extinguishing gas stored in the guide hole can be ejected to the outside, and the fire extinguishing gas stored in the guide hole can be accurately injected toward the source of the fire. the effective fire fighting has been in Figure so that.
According to a third aspect of the present invention, the operation lever is rotatably provided at the upper portion of the case, and a handle portion of the operation lever protrudes to the outside of the case so that the operation lever can be easily operated. I am doing so.
According to the invention of claim 4, an alarm device is detachably provided on the peripheral surface of the case via an attachment band, and the alarm device is easily attached and detached, and the alarm device is detached and attached to, for example, an arm. We are trying to help you quickly and easily .

According to the first aspect of the present invention , two O-rings are mounted on the peripheral surface of the control valve so as to be spaced apart from each other, and before breaking, the lower O-ring is positioned at the inner edge of the nozzle hole. In addition to closing, the valve hole can be closed via the upper O-ring. At the time of breakage, the upper O-ring is positioned at the inner edge of the nozzle hole, and the nozzle hole is closed and the lower O-ring is closed. Since the ring is positioned in the guide hole and the fire extinguishing gas is stored in the guide hole, the nozzle hole is closed by the lower O-ring and the valve hole is closed by the upper O-ring before breaking. In addition to sealing the valve hole, the nozzle hole is closed by the upper O-ring at the time of breakage, and the fire extinguishing gas can be stored in the guide hole to prevent the discharge of the fire extinguishing gas ejected from the gas cylinder. it is possible to prevent a part And simplicity of reducing constitute a number, can be easily and inexpensively manufactured by small and light.

In the invention of claim 2, after the rupture, the two O-rings are positioned above and below the nozzle hole, the valve hole is closed through the upper O-ring, and the lower O-ring is positioned in the guide hole, The guide hole communicates with the nozzle hole so that the fire extinguishing gas stored in the guide hole can be ejected to the outside, so that the fire extinguishing gas stored in the guide hole can be accurately injected toward the fire source and effective use of the fire extinguishing gas And effective initial fire extinguishing .
According to the invention of claim 3, since the operation lever is rotatably provided on the upper portion of the case and the handle portion of the operation lever protrudes to the outside of the case, the operation lever can be operated easily. In the invention of claim 4, since the alarm device is detachably provided on the peripheral surface of the case via the attachment band, the alarm device can be easily attached and detached, and the alarm device can be removed. It can be attached to the arm and help the evacuees quickly and easily .

  DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention that is applied to a fire extinguishing gas injector for home use or on-vehicle use that uses a small gas cylinder will be described below. FIG. 1 to FIG. This is a substantially hollow cylindrical case made by joining a pair of cut cases in which the center part of an injection guide, which will be described later, is split and formed in the longitudinal direction, and a screw part 2 is formed on the peripheral surface of the lower end part, A bottomed cap 3 is attached to the screw portion 2.

  An opening 4 is formed at the upper end of the case 1, and an operation lever 5 is attached to the opening 4 so as to be rotatable up and down. The operating lever 5 is composed of a synthetic resin plate having a substantially equal width to the opening 4, and a pin 6 protruding from one end of the operating lever 5 is slidably inserted into a vertically long slot 7 formed in the case 1. The part protrudes to the outer rear side of the case 1.

  In the figure, reference numeral 5a denotes an engaging convex portion protruding from the center of the lower surface of the operation lever 5, which is arranged to be engageable with an upper end portion of a control valve to be described later, and a safety pin 8 is inserted into the engaging convex portion 5a. It is. Reference numeral 5b denotes a concave handle formed at the other end of the operation lever 5 and projects rearward of the case 1.

  The safety pin 8 is inserted through the central portion of the case 1 and the operation lever 5 and is disposed with a gripping portion (not shown) at one end thereof protruding outside the case 1. While the pressing operation of -5 is disabled and erroneous breakage can be prevented, the operating lever 5 can be pressed when the safety pin 8 is pulled out via the grip portion (not shown).

A small gas cylinder 9 is accommodated in the case 1 and the bottom thereof is accommodated in the cap 3. The gas cylinder 9 is filled with about 4 MPa of carbon dioxide as a fire extinguishing gas, and has an opening at its upper end. The sealing plate 10 is hermetically sealed.
A screw portion 11 is formed on the peripheral surface of the mouth portion of the gas cylinder 9, and the screw portion 11 is screwed into a screw hole 13 of the cylinder holder 12 and attached.

The cylinder holder 12 is formed into a cylindrical shape by aluminum die casting, and the screw hole 13 is opened at the lower end thereof. Above the screw hole 13, a guide hole 14, a valve hole 15, and a through hole 16 are formed in communication with each other, and they are formed by sequentially reducing the inner diameter.
An injection hole 18 communicating with an injection guide 17 provided in the case 1 is formed in the middle and high peripheral surface of the cylinder holder 12, a nozzle hole 19 is formed at the bottom of the injection hole 18, and the nozzle hole 19 is connected to the valve hole. 15 is communicated.

A control valve 20 is slidably inserted into the valve hole 15, and an upper end portion thereof is disposed on the upper surface of the cylinder holder 12 so as to be able to project and retract, and is able to engage with the engaging convex portion 5a when protruding.
A needle tube 21 that is a breaking member protrudes from a lower end portion of the control valve 20, and a pointed end portion 21 a is disposed immediately above the sealing plate 10. In this case, the needle tube 21 does not necessarily have a tubular shape.

The control valve 20 is formed in a substantially stepped rod shape, and at least two O-rings 22 and 23 are mounted on the upper and lower positions of the peripheral surface of the large diameter portion, and the valve hole 15 and the nozzle are interposed through the O-rings 22 and 23. The airtightness with the hole 17 can be maintained.
A valve spring 24 is inserted between the lower end portion of the control valve 20 and the sealing plate 10, and the control valve 20 is biased upward by the elasticity of the spring 24, and is placed in an intermediate portion of the control valve 20. The formed step portion 20a can be engaged with the lower opening edge of the through hole 16.

  The control valve 20 normally has an O-ring 23 arranged on the lower side positioned at the inner edge of the nozzle hole 19 so as to be able to close the nozzle hole 19, and the sealing plate 10 by the pressing operation of the operation lever 5. When the seal is broken, the downward movement displacement of the operation lever 5 or the control valve 20 is regulated by the long hole 7, the O-ring 22 arranged on the upper side is positioned at the inner edge of the nozzle hole 19, and the nozzle hole 19 Can be closed.

  Then, when the fire extinguishing gas is ejected by the pressing operation of the operation lever 5 after the breakage, the O-rings 22 and 23 are positioned above and below the inner edge of the nozzle hole 19, and the lower O-ring 23 is positioned in the guide hole 14. Positioned on the side, the guide hole 14 communicates with the nozzle hole 19 so that the fire extinguishing gas can be ejected from the nozzle hole 19 to the fire source.

In the figure, 24 is a recess formed in the upper surface of the cylinder holder 12, and a lever spring 25 is inserted between the recess 24 and the operation lever 5, and the operation lever 5 is moved upward via the elasticity of the spring 25. Is energized.
26 is a lamp such as an LED provided on the upper part of the case 1, and is normally turned off. When the seal is opened by the pressing operation of the operation lever 5, the terminal (not shown) is contacted to be turned on. The ON state can be maintained while maintaining the contact state of the terminals.
In addition, in the drawing, reference numeral 27 denotes an O-ring disposed between the lower end portion of the guide hole 14 and the sealing plate 10, and 10a denotes a sealing hole of the sealed sealing plate 10.

28 is an alarm device which is detachably attached to the peripheral surface of the case 1 via a flexible mounting band 29. The alarm device 28 receives signals from an earthquake alarm and a fire alarm (not shown) inside, and includes an alarm including light. To announce the location of the fire extinguishing gas injector and encourage its rapid use.
At the time of the notification, a built-in recording device (not shown) is started to operate a voice guide recommending evacuation, and when evacuating or extinguishing, it is removed from the case 1 and attached to the arm of the refugee. , Helping evacuees be rescued quickly and easily.
In this case, if a fluorescent paint is applied to the alarm device 28 or the attachment band 29, or a part or the entire surface of the case 1, or a fluorescent member is attached, the fire extinguishing gas injector and the alarm device 28 can be found at night. It becomes easy.

  The fire-extinguishing gas injector of the present invention configured as described above omits an outer housing, a tear-off holder, a pin, a push rod, and the like as in the conventional gas injector, and only the cylinder holder 12 is provided above the inside of the case 1. Therefore, the number of parts is reduced, the configuration is simplified, the assembly thereof is facilitated, and the fire extinguishing gas injector can be reduced in size, weight and cost.

  When the fire extinguishing gas injector is installed, the screw part 11 of the gas cylinder 9 is attached to the screw hole 13 of the cylinder holder 12, and before the fire extinguishing operation, the O-ring 23 is located at the inner edge of the nozzle hole 19, The edge is closed, and the guide hole 14 or the valve hole 15 and the nozzle hole 19 are blocked.

Further, the control valve 20 inserted into the valve hole 15 is urged upward by the valve spring 24, and its upper end protrudes from the upper surface of the cylinder holder 12 and engages with the engagement convex portion 5a of the operation lever 5. Yes.
The operation lever 5 has a safety pin 8 inserted in the center thereof, the pin 6 engages with the upper end of the long hole 7 and is prevented from operating, and the needle tube 21 is located above the sealing plate 10 and is broken. Waiting for operation. This situation is as shown in FIG.

Under such circumstances, when the fire is extinguished, the safety pin 8 is pulled out through the gripping portion (not shown), the lock of the operation lever 5 is released, and the upper center of the operation lever 5 is placed on the lever spring 24. Push down against elasticity.
If it does in this way, the operation lever 5 will descend | fall substantially horizontally along the long hole 7 via the pin 6, the upper end part of the control valve 20 will be pressed by the engagement convex part 5a, and the control valve 20 will be valve spring. Push down against the elasticity of 25.
For this reason, the needle tube 21 moves together with the control valve 20, and the pointed end 21 a is pierced into the sealing plate 10 to be sealed. This situation is as shown in FIG.

At the time of the breakage, the O-ring 22 moves to the inner edge of the nozzle hole 19 and closes, and the nozzle hole 19 and the guide hole 14 are blocked.
Therefore, even if a fire extinguishing gas is ejected from the gas cylinder 9 due to the above-described breakage, the fire extinguishing gas does not flow out from the nozzle hole 19.
Further, due to the pressing displacement of the operation lever 5, the contact terminal (not shown) comes into contact and the lamp 26 is turned on, and thereafter the contact state is maintained and the lighting state of the lamp 26 is maintained.

When the hand is released from the operation lever 5 after the breakage, the control valve 20 is pushed up by the valve spring 24, the O-ring 23 is moved to the original position in FIG. 1 to seal the nozzle hole 19, and the operation lever 5 Is engaged with the control valve 20 and pushed up, and the pin 6 engages with the upper end of the long hole 7 and moves to the original position in FIG.
Therefore, after the breakage, the fire extinguishing gas is ejected from the seal opening 10a of the sealing plate 10 to the guide hole 14, but the fire extinguishing gas is prevented from flowing out from the nozzle hole 19 by the O-ring 23, and the O-ring. Leakage from the valve hole 15 is also prevented by 22 and stored in the guide hole 14.

Under such circumstances, when the finger is put on the handle portion 5b and the operation lever 5 is pushed down against the lever spring 25, the operation lever 5 rotates downward about the pin 6 as a control valve 20. It is pressed by the engaging convex part 5 a and pushed down against the elasticity of the valve spring 24.
Therefore, the O-rings 22 and 23 move downward, the O-ring 23 releases the blockage of the nozzle hole 19, the nozzle hole 19 communicates with the guide hole 14, and the O-ring 22 is connected to the inner edge of the nozzle hole 19. The valve hole 15 is sealed by moving directly above the part.

In this case, since the downward displacement of the control valve 20 is smaller than the downward displacement at the time of breaking as shown in FIGS. 1 and 3, the O-ring 22 closes the nozzle hole 19 or the needle tube 21 is sealed. The nozzle hole 19 is maintained in the open state without being blocked by being inserted into the port 10a, and the extinguishing of the fire extinguishing gas from the broken opening 10a is maintained.
As a result, the fire extinguishing gas is ejected from the nozzle hole 19 to the ejection port 18, ejected from the ejection guide 3 to the outside, and ejected to the fire source. This situation is as shown in FIG.

  As described above, the present invention temporarily stores the fire extinguishing gas ejected after the breakage, and injects the fire extinguishing gas to the fire source accurately and efficiently without waste because the jet guide 3 is directed to the fire source accurately. Can be extinguished reasonably and quickly.

  Thus, the fire-extinguishing gas injector of the present invention simply breaks the loaded small gas cylinder, temporarily blocks the outflow of the fire-extinguishing gas by the valve, prevents the waste of the fire-extinguishing gas, and effectively uses and extinguishes it. The fire extinguishing gas is reliably and accurately injected toward the fire source during fire extinguishing, realizing effective and effective fire extinguishing and reliable initial fire extinguishing, and being small and lightweight, easy to manufacture, Moreover, since the location of the fire extinguisher is notified in the event of a fire and prompt use of the fire extinguisher and initial fire extinguishing can be promoted, it is suitable, for example, for a home or office or a vehicle-mounted simple fire extinguisher.

It is sectional drawing which shows the condition before breaking of the fire-extinguishing gas injector to which this invention is applied. It is sectional drawing which shows the condition at the time of breakage of the fire-extinguishing gas injector to which this invention is applied. It is sectional drawing which shows the ejection condition of the fire-extinguishing gas after the sealing of the fire-extinguishing gas injector to which this invention is applied.

Explanation of symbols

1 Case 5 Operation lever
9 Gas cylinder 10 Sealing plate 12 Cylinder holder 14 Guide hole

15 Valve hole 19 Nozzle hole 20 Control valve 21 Breaking member (needle tube)
21a Point 22 O-ring 23 O-ring

Claims (4)

A gas cylinder that is pressurized and filled with a fire extinguishing gas and has a sealing plate attached to the opening thereof, a case that can accommodate the gas cylinder, and a sealing member that has a pointed end that can tear the sealing plate; removably attached to the mouth portion of the gas cylinder, and a Bonbehoruda forming a guide hole for movably housing the Yabufu member therein communicatively to provided a nozzle hole which opens the guide hole to the outside, the A control valve is provided in a communicating path between the guide hole and the nozzle hole so as to be movable up and down, and the control valve is urged so as to be movable upward, and an intermediate portion of the operation lever is engaged with the upper end portion of the control valve. The communication path can be intermittently provided through the movement of the control valve, and a valve hole communicating with the guide hole is formed in the cylinder holder so that the control valve can slide in the valve hole. Provided in the guide hole In extinguishing gas injectors and a larger diameter than the valve hole, the inside of the peripheral surface of the control valve apart the two O-ring up and down is attached, Yabufu front nozzle hole the O-ring of the lower Positioned at the mouth edge, the nozzle hole is closed and the valve hole can be closed via the upper O-ring, and when broken, the upper O-ring is positioned at the inner edge of the nozzle hole. A fire extinguishing gas injector characterized by closing a hole, positioning a lower O-ring in the guide hole, and storing fire extinguishing gas in the guide hole . After sealing, the two O-rings are positioned above and below the nozzle hole, the valve hole is closed via the upper O-ring, the lower O-ring is positioned at the guide hole, and the guide hole communicates with the nozzle hole. The fire-extinguishing gas injector according to claim 1, wherein the fire-extinguishing gas stored in the guide hole can be ejected to the outside . 2. The fire extinguishing gas injector according to claim 1 , wherein the operation lever is rotatably provided at an upper portion of the case, and a handle portion of the operation lever protrudes to the outside of the case . The fire extinguishing gas injector according to claim 1, wherein an alarm device is detachably provided on a peripheral surface of the case via an attachment band .

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