JP2015064005A - Seal plate for chemical cylinder, seal breakage device for chemical cylinder, and fire extinction gas jet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a seal plate for chemical cylinder, a seal breakage structure for chemical cylinder and a fire extinction gas jet that are preferable for use as easy fire fighters at households or offices or vehicles, for example, that can be broken easily and fast with a slight force due to its simple configuration and at the same time can carry out fire fighting rapidly by a loaded small-sized chemical cylinder.SOLUTION: There is provided a seal plate 3 for a chemical cylinder 1 seal-installed at an opening base part of the chemical cylinder 1 and broken by an extremity end part 20a of a breakage member 20 moved downward from above it. The central part of the seal plate 3 is formed with a breakage groove 4 that can press against the extremity end part 20a.

Description

  The present invention is suitable for a simple fire extinguisher for home use or office use, for example, and can be easily and quickly opened with a small force by a simple structure, and can be quickly extinguished with a small gas cylinder loaded. The present invention relates to a gas cylinder sealing plate, a gas cylinder breaking structure, and a fire extinguishing gas injector.

  For example, as a sealing plate for a small gas cylinder, a thin metal plate is formed into a cap shape, its cylindrical leg is inserted into the mouth part of the gas cylinder, the peripheral flange part is caulked or welded to the mouth part, and the center of the upper surface is Are provided with an inverted circle or truncated pyramid-shaped recess, and a crack-proposed portion having a sharp corner is formed on the bottom surface of the recess to promote cracking of the sealing plate (for example, see Patent Document 1). ).

  However, the sealing plate is expensive to manufacture and has a configuration in which the tip of the needle that breaks it is pierced into the concave portion and pushed through, the thickness and diameter of the concave portion of the sealing plate and the depth thereof, Despite the need for strict dimensional control for the shape of the planned crack and the tip of the needle tube, etc., the crack promotion or crack spreading effect at the time of breaking is generally low, requiring a large pressing force and taking time to break. There was a problem.

  By the way, there is a fire extinguisher that requires the gas cylinder to be broken, and as a general one, a sealing plate is sealed at the mouth of the small gas cylinder, and the screw portion of the upper peripheral surface of the gas cylinder is screwed into the lid member. When loading and breaking, the fixed lever provided on the upper part of the lid member and the operating lever that is pivotally connected to the lever are gripped, and the upper end of the working lever is latched. There is one in which a member is moved downward and its tip is pierced into a sealing plate to be broken (see, for example, Patent Document 2).

However, the fire extinguisher has a large diameter at the lower end of the sealing member, and the structure that pushes and breaks the sealing plate at the tip of the extinguisher requires arm strength for the breaking, and the holding operation of the fixed lever and the operating lever In addition, it requires a large amount of labor and is large and heavy, and is inconvenient for moving and extinguishing operations.
For this reason, various simple fire extinguishers of small size and light weight have been proposed as means for solving the above problems. The structure is broadly divided into those for turning the cylinder or cover, those for depressing the operation block, and those for hitting the head or bottom of the cylinder depending on the method of breaking the sealing plate of the gas cylinder.

  Among these, as a cylinder or cover to be rotated, a tube body that accommodates a gas cylinder, an upper cover body screwed to the upper end portion of the tube body, a cylinder fitting body that can be screwed into a mouth screw of the gas cylinder, and a firing pin The central cylinder part of the cylinder fitting body is inserted into the opening at the upper end of the tube body, the nozzle body is inserted inside the central cylinder part, and the upper part of the nozzle body is covered with the upper cover In the case of fire extinguishing, the upper cover body or tube body is rotated around its axis, the firing needle is moved to the gas cylinder side to break the sealing plate, and the cooling gas is ejected from the nozzle body nozzle. Yes (see, for example, Patent Document 3).

  In addition, as a push-down operation block, an operation surface and a safety block hook are provided on the upper part of the case that can accommodate a gas cylinder, and a shaft body equipped with a firing needle is slidably mounted up and down inside the case. The retaining groove of the shaft body is hooked with a retainer, and when the fire is extinguished, the safety block is pulled down through the hook, and the retainer is moved to the back by further pressing the operating surface, and the engagement between the retaining groove and the edge of the opening hole There are those that release the joint, push down the shaft body with the elasticity of the spring, move the firing needle to the gas cylinder side to break the sealing plate, guide the jet gas into the shaft body, and inject it from the injection hole (For example, refer to Patent Document 4).

  Furthermore, the gas cylinder is accommodated inside the pipe body with the cover attached, and a dish-shaped nozzle is attached to the lower end of the pipe body, and a pusher guide body is attached to the upper end portion of the pipe body. Attach a slidable pusher with a hammer to the guide body, and always insert a safety plate into the pusher to prevent its movement, while attaching a cylinder receiver inside the pusher guide body. Screw the gas cylinder mouth screw to the bar, pull out the safety plate attached to the pusher during fire extinguishing, hit the outside of the pusher with your hand and push it inward, move the firing pin to the gas cylinder side and tear off the sealing plate, There is one that guides the jet gas from the inside of the pipe body to the inside of the shaft body and jets it from the injection hole (for example, see Patent Document 5). ).

However, among the simple fire extinguishers, those that turn the cylinder or the cover have a small displacement of the firing pin with respect to the rotation amount, and in order to sufficiently break the sealing plate, the rotation amount of the cylinder or the cover must be increased. In that case, there was a problem that it took a lot of time and effort to quickly extinguish the fire.
In addition, when the operation block is pushed down, a safety block lowering operation and an operation surface pressing operation are required, and there is a problem that the operation during fire extinguishing becomes complicated.
In addition, the one that strikes the top or bottom of the cylinder is relatively easy to extinguish, and can be extinguished quickly. However, the safety plate is exposed to the outside, so the plate is pulled out by mischief or mistake. There was a fear that the sealing plate would be broken.

  In order to solve such a problem, the applicant has developed and proposed various fire extinguishing gas injectors. For example, as an in-vehicle fire extinguishing gas injection device, a tear-off knob is detachably provided at the upper end of an outer shell member that can be screwed with a screw portion at the mouth of a gas cylinder. Pull out to form a gap between the break knob and the upper end of the outer shell member, press the breaker ridge and insert the tip of the lower end into the sealing plate of the gas cylinder. After the break, release the pressure of the break knob, push the break knob up with the jet gas, connect the through hole directly above the seal plate to the nozzle hole, blow out the extinguishing gas to the outside and extinguish the fire, A hammer member protrudes from the bottom of the gas cylinder, the windshield of the vehicle is crushed by the hammer member in an emergency, a sheet belt introduction groove is provided in the outer shell member, and a cutter is disposed in the introduction groove. Sometimes the seat belt is introduced into the introduction groove and cut, There are those to achieve an escape from (e.g., see Patent Document 6)

  However, after extinguishing the fire extinguisher, the fire extinguishing device raises the tab and pulls out the tear-off knob, then presses the tear-off knob to break the seal. Since the gas can be extinguished by extinguishing the gas, there is a problem that the operation from the triggering of the tab to the extinguishing is complicated and takes time, and a large arm force is required to press the tearing knob.

  As another in-vehicle fire extinguishing gas injection device that solves the above-mentioned problem, a plurality of warning lights are arranged on the peripheral surface of the lighting cylinder protruding from the injection cylinder, and these warning lights flash when the operation lever is operated. While ensuring the safety of road traffic during nighttime emergency, a smashing holder and cylinder holder are arranged vertically inside the injection cylinder so that they can move close to and away from each other, and a control valve is installed inside the severing holder The control valve is normally closed, one end of the operation lever is rotatably attached to a housing provided outside the injection cylinder, the operation lever is gripped and the spring receiver is pressed, and the control valve is At the same time as opening the valve, screw the mouth part of the gas cylinder into the cylinder holder, and at the time of breaking, rotate the gas cylinder to pierce the needle tube into the sealing plate, and let the fire extinguishing gas blown out stay in the through hole of the cylinder holder, Hold the operation lever Opening the valve, ejected to have those so as to extinguish the residence fire extinguishing gas from the nozzle hole of Yabufu holder to the outside of the jet pipe (for example, see Patent Document 7).

  However, the fire extinguisher has a complicated structure and requires an expensive control valve, and also requires a rotating operation of the gas cylinder at the time of breakage. There is a problem that a large arm force is required to operate the operation lever.

Japanese Examined Patent Publication No. 63-34360 Japanese Patent Laid-Open No. 11-299916 JP-A-9-103512 JP 2000-189534 A Japanese Patent No. 2890097 Japanese Patent No. 5148623 WO 2011/121889 A1

  The present invention solves such a problem, and is suitable for a simple fire extinguisher for home use or office use, for example, and can be easily and quickly opened with a small force by a simple structure, and can be extinguished by a small gas cylinder loaded. It is an object of the present invention to provide a gas cylinder sealing plate, a gas cylinder breaking device, and a fire extinguishing gas injector capable of quickly performing the above.

According to the first aspect of the present invention, in the sealing plate of the gas cylinder that is sealed at the mouth portion of the gas cylinder and is torn by the sharp end portion of the breaking member that moves downward from above, the pointed portion is pressed against the central portion of the sealing plate. Possible breakage grooves are formed, which can be easily and inexpensively manufactured with a simple structure. Further, the breakage grooves promote breakage, and can be easily and quickly broken with a small force.
In the invention of claim 2, the sealing groove is formed in an annular shape, a substantially U shape, an arc shape or a curved shape, or a cross shape or a star shape, so that an optimum shape can be adopted according to various uses. ing.
The invention of claim 3 forms the outer diameter of the tearing groove substantially the same as that of the tearing member, reduces the burden on the tearing member at the time of tearing, and quickly forms the tearing tendency by the tearing groove. Thus, the pressing force at the time of sealing is reduced.
According to the invention of claim 4, the tip end portion of the breaking member is pressed into the breaking groove so that the breaking can be formed along the breaking groove, so that rational and smooth breaking can be realized by the breaking groove. I have to.
According to the invention of claim 5, the sectional shape of the breaking groove is formed into a V shape or a concave curved surface shape, and the breaking of the breaking groove is promoted.

The invention of claim 6 is provided with a tearing member having a gas cylinder with a mouth portion sealed with a sealing plate detachably attached to a tearing device, provided with a through hole communicating with a nozzle hole, and having a pointed end formed at the lower end. In a gas cylinder tearing device in which the tear-seal holder is disposed above the sealing plate so as to be movable up and down, a tearing groove capable of pressing the tip is formed in the central part of the sealing plate, so that it can be easily configured. In addition to being able to be broken at low cost, the breakage groove promotes the breakage so that it can be easily and quickly broken with a small force.
The invention of claim 7 forms the outer diameter of the tearing groove substantially the same diameter as the tearing member, reduces the burden on the tearing member at the time of tearing, and quickly forms the tearing tendency by the tearing groove. Thus, the pressing force at the time of sealing is reduced.
The invention according to claim 8 can realize a rational and smooth breakage by the breakage groove by pressing the tip of the breakage member into the breakage groove and forming a breakage along the breakage groove. I am doing so.
According to the ninth aspect of the present invention, the base end portion of the operation lever is rotatably connected to the upper portion of the breaking device, and the operation lever is disposed so as to be engageable above the breaking holder. The tearing holder is moved downward by the rotational displacement, and the tearing by the tearing member can be executed.

According to the tenth aspect of the present invention, the base end portion of the operation lever is rotatably connected to the upper portion of the breaking device via two inner and outer pins, and the operation lever is rotated around the inner pin as a fulcrum. The tip of the breaking member is inserted into the sealing plate, and then the operation lever is rotated with the outer pin as a fulcrum to further move the breaking member downward so that the outer periphery of the breaking member is inside the sealing plate. After inserting the tip into the sealing plate, the operation lever is turned around the outer pin as a fulcrum, reducing the burden of labor at the time of substantial breaking and easily breaking with a small force. It can be sealed.
In the invention of claim 11, a cylindrical housing is movably attached to the outer side of the tear-off holder, the tubular housing is provided on the tear-off device so as to be movable up and down, and is tubular by the rotational displacement of the operation lever. The housing or the severing holder is moved up and down to enable severing by the severing member.

According to a twelfth aspect of the present invention, an injection cylinder having a nozzle hole is slidably inserted into a seal holder, and a flange projecting from the injection cylinder is disposed so as to be engageable with an operation lever. An annular groove is formed in the peripheral surface, and a through hole communicating with the nozzle hole and a through hole communicating with the annular groove are formed inside the injection cylinder, and the injection cylinder is moved through the rotational displacement of the operation lever. The annular groove and the through hole of the severing holder can be communicated, and the movement of the injection cylinder is linked to the rotational displacement of the operation lever so that the fire extinguishing gas after severing can be reliably and safely ejected. I have to.
The invention of claim 13 cuts off the electrical continuity between the annular groove and the through hole of the severing holder through the rotational displacement of the operation lever after the severing, and allows the fire extinguishing gas to remain inside the severing holder. In this way, the cost of extinguishing the fire extinguishing gas is prevented, and its effective use is attempted.
According to the fourteenth aspect of the present invention, a safety device is detachably attached to an upper portion of the breaking device, and the safety device is provided with a peeling tab projecting a pin that can be locked to the breaking device, an operation lever, and the breaking device. It is composed of a stopper that can be engaged with each of the concave grooves, and a flexible connecting piece that connects the peeling tab and the stopper, and the operation of the operation lever can be regulated with a simple structure, so that it can be securely and safely sealed. I am doing so.

  The invention of claim 15 is a cylinder holder in which a gas cylinder whose mouth is sealed with a sealing plate can be detachably attached, a shaft portion is slidably inserted into a guide hole of the cylinder holder, and a pointed end portion is formed at the lower end portion. A tearing device in which a tearing holder provided with a tearing member is vertically arranged, and a through hole and a nozzle hole communicating with the guide hole are formed in the tearing holder, and the tearing holder is moved down to be sealed. In the fire extinguishing gas injector, which can be broken by the tip of the member, a tear groove capable of pressing the tip is formed in the center of the sealing plate, and a base of an operation lever is formed above the breaking device. The end is pivotably connected via two inner and outer pins, the operating lever is rotated around the inner pin as a fulcrum, and the tip of the breaking member is inserted into the sealing plate. Rotate the operation lever around the pin as a fulcrum, and further move the sealing member down, The outer periphery of the seal plate can be inserted inside the seal plate, and the tear groove is used to easily and quickly break the seal with a small force, and after the tip is inserted into the seal plate, the operation lever is turned around the outer pin as a fulcrum. To reduce the burden of labor at the time of substantial breakage, and to promote breakage by small force.

In the invention of claim 16, the breaking groove is formed in an annular shape, a substantially U shape, an arc shape or a curved shape, or a cross shape or a star shape, so that an optimum form can be adopted according to various uses. ing.
According to the seventeenth aspect of the present invention, a seat belt introduction groove into which a seat belt can be inserted is provided on the outer peripheral surface of the breaking device, and a cutter is disposed so as to face the introduction groove, without requiring a dedicated seat belt cutter. The seat belt is cut to release the restraint of the occupant in an emergency. According to the invention of claim 18, a hammer member having a pointed portion is provided at the bottom of the gas cylinder, and the pointed portion of the hammer member is interposed therebetween. The wind glass can be crushed, and the wind glass can be crushed without the need for a dedicated glass crushing device, allowing the passenger to escape from the passenger compartment in an emergency.

In the invention of claim 1, since the tear groove capable of pressing the tip end portion is formed in the center portion of the sealing plate, it can be easily and inexpensively manufactured with a simple configuration, and the tear groove facilitates the breakage. It can be easily and quickly opened with a small force.
In the invention of claim 2, since the severing groove is formed in an annular shape, a substantially U shape, an arc shape or a curved shape, or a cross shape or a star shape, it is possible to adopt an optimum form according to various uses. it can.
In the invention of claim 3, since the outer diameter of the breaking groove is formed to be substantially the same as that of the breaking member, the burden on the breaking member at the time of breaking is reduced, and the tendency to break by the breaking groove is promptly increased. The pressing force at the time of forming and breaking can be reduced.
In the invention of claim 4, since the tip end portion of the breaking member is pressed into the breaking groove and the breaking can be formed along the breaking groove, a rational and smooth breakage is realized by the breaking groove. be able to.
In the invention of claim 5, since the sectional shape of the breaking groove is formed in a V shape or a concave curved surface shape, it is possible to promote the breaking of the breaking groove.

In the invention of claim 6, since the tear groove capable of pressing the tip end portion is formed in the central portion of the sealing plate, it can be easily and inexpensively broken with a simple structure, and the breakage groove promotes the breakage. However, it can be easily and quickly opened with a small force.
In the invention of claim 7, since the outer diameter of the breaking groove is formed to be substantially the same as that of the breaking member, the burden on the breaking member at the time of breaking is reduced, and the tendency to break by the breaking groove is promptly increased. The pressing force at the time of forming and breaking can be reduced.
According to the invention of claim 8, since the tip end portion of the breaking member is pressed into the breaking groove and the breaking can be formed along the breaking groove, a rational and smooth breaking by the breaking groove is realized. be able to.
According to the ninth aspect of the present invention, the base end portion of the operation lever is rotatably connected to the upper portion of the breaking device, and the operation lever is disposed above the breaking holder so as to be engageable. The tearing holder can be moved down by the rotational displacement of-and the tearing by the tearing member can be executed.
According to the tenth aspect of the present invention, the base end portion of the operation lever is rotatably connected to the upper portion of the breaking device via two inner and outer pins, and the operation lever is rotated around the inner pin as a fulcrum. The tip of the breaking member is inserted into the sealing plate, and then the operation lever is rotated with the outer pin as a fulcrum to further move the breaking member downward so that the outer periphery of the breaking member is inside the sealing plate. After inserting the tip into the sealing plate, the operation lever is rotated around the outer pin as a fulcrum to reduce the burden of labor at the time of substantial breakage and easy with a small force Can be broken.

According to the eleventh aspect of the present invention, the cylindrical housing is movably attached to the outside of the seal holder, and the cylindrical housing is provided on the seal device so as to be movable up and down. The shape housing or the tear-off holder can be moved up and down to realize the tear-off by the tear-off member.
According to a twelfth aspect of the present invention, an injection cylinder having a nozzle hole is slidably inserted into a seal holder, and a flange projecting from the injection cylinder is disposed so as to be engageable with an operation lever. An annular groove is formed in the peripheral surface, and a through hole communicating with the nozzle hole and a through hole communicating with the annular groove are formed inside the injection cylinder, and the injection cylinder is moved through the rotational displacement of the operation lever. Since the annular groove and the through hole of the severing holder can be communicated with each other, the movement of the injection cylinder is linked to the rotational displacement of the operation lever, and the fire extinguishing gas after severing is reliably and safely ejected. be able to.
According to the invention of claim 13, after breaking, the conduction between the annular groove and the through hole of the breaking holder is interrupted through the rotational displacement of the operation lever, so that the extinguishing gas can remain inside the breaking holder. As a result, it is possible to prevent the waste of fire extinguishing gas and to effectively use it.
According to the fourteenth aspect of the present invention, a safety device is detachably attached to an upper portion of the breaking device, and the safety device is provided with a peeling tab projecting a pin that can be locked to the breaking device, an operation lever, and the breaking device. Because it is composed of a stopper that can be engaged with each concave groove and a flexible connecting piece that connects the peeling tab and the stopper, the operation of the operation lever is regulated with a simple structure, and it is securely and safely broken. be able to.

According to the invention of claim 15, a tearing groove capable of pressing the tip end portion is formed in the center portion of the sealing plate, and the base end portion of the operation lever is formed on the upper portion of the sealing device via two inner and outer pins. The operation lever is rotated with the inner pin as a fulcrum and the tip of the rupture member is inserted into the sealing plate. Thereafter, the operation lever is rotated with the outer pin as a fulcrum. Since the outer periphery of the sealing member can be inserted into the inside of the sealing plate, the sealing member can be easily and promptly sealed with a small force and the tip is sealed. After piercing the board, the operation lever can be rotated with the outer pin as a fulcrum, so that the burden of labor at the time of substantial breaking can be reduced, and breaking with a small force can be promoted.
In the invention of claim 16, since the tearing groove is formed in an annular shape, a substantially U shape, an arc shape or a curved shape, or a cross shape or a star shape, an optimum shape can be adopted according to various uses. it can.

In the invention of claim 17, since the seat belt introduction groove into which the seat belt can be inserted is provided on the outer peripheral surface of the breaking device, and the cutter is disposed so as to face the introduction groove, a dedicated seat belt cutter is required. It is possible to release the restraint of the occupant in the event of an emergency by cutting the seat belt.
In the invention of claim 18, since a hammer member having a pointed portion is provided at the bottom of the gas cylinder, and the wind glass can be crushed through the pointed portion of the hammer member, The glass can be crushed to escape from the passenger compartment in an emergency.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to FIG. 1 to FIG. 13, reference numeral 1 denotes a fire extinguishing gas. The illustrated embodiment applies the present invention to a household or vehicle fire extinguishing gas injector loaded with a small gas cylinder filled with carbon dioxide. In a small gas cylinder filled with carbon dioxide, a tearing device 2 is detachably attached to the mouth of the gas cylinder 1.
The gas cylinder 1 of the embodiment has an outer diameter of about 40 mm, a length of about 130 mm, and a tare of about 90 ml, is filled with about 4 MPa of carbon dioxide as a fire extinguishing gas, and has a weight after filling of about 300 g. After the filling, a circular sealing plate 3 made of a thin steel plate is welded and sealed to the periphery of the mouth portion, and a hammer member described later is attached to the bottom portion.

The sealing plate 3 is a steel plate of the same quality as that of the gas cylinder 1, in the embodiment, a thin steel plate having a thickness of 0.3 mm is formed in a disk shape of approximately 12 mm, and a small-diameter breaking groove 4 having a diameter of about 2 mm is press-formed at the center. And the upper surface is plated.
In this case, the breaking groove 4 is not only a circular annular groove but also an elliptical annular groove as shown in FIG. 8A or a semicircular or curved shape as shown in FIGS. 8B and 8C. It is also possible to form a substantially U-shape or tongue-piece shape with both ends extending rearward, and a semicircular or curved shape as shown in FIGS. 8 (d) and 8 (e).

  As shown in FIG. 7, the outer diameter of the breaking groove 4, that is, the distance between the concave grooves, is formed to be substantially the same diameter as the outer diameter of a needle tube, which will be described later. It is formed in a concave curved surface shape, and the tip end portion of a needle tube, which will be described later, is pressed into the tear groove 4 to promote breakage of the groove and to promote cracking or tearing of the inner part defined by the bottom of the groove. . In the figure, reference numeral 3a denotes a broken piece after the sealing plate is broken.

A screw portion 5 is formed on the peripheral surface of the mouth portion of the gas cylinder 1, and the screw portion 5 is screwed and attached to a cylinder holder 6 assembled to the breaking device 2.
The tearing device 2 is formed into a deformed cylindrical shape by a tough and lightweight synthetic resin, the cylinder holder 6 being disposed therein, the tearing holder 7 slidably disposed above the cylinder holder 6, and the cylinder holder 6 and the cylindrical housing 8 in which the tear-off holder 7 is housed, a pair of outer covers 9a and 9b that define the outside of the tear-off device 2, and an upper end portion on the inner side of the outer covers 9a and 9b. An operation lever 10 that is pivotably connected is assembled.

  Among these, the cylinder holder 6 is formed into a substantially cylindrical shape by aluminum die casting, and a screw hole 11 into which the screw portion 5 can be screwed is formed at a lower end portion thereof. A guide hole 12 communicating with the screw hole 11 is formed inside the cylinder holder 6, and a small-diameter shaft portion 13 integral with the tear-off holder 7 is slidably inserted into the guide hole 12.

In the figure, reference numeral 14 denotes a pin hole formed in the diameter direction of the peripheral surface of the cylinder holder 6, and the pins 15, 15 are press-fitted into the pin holes 14, 14, and a guide groove (described later) of the cylindrical housing 8 is formed on the outer end thereof. It penetrates and is inserted into pin holes 16 and 16 formed inside the outer covers 9a and 9b, and supports the cylindrical housing 8 so as to be movable up and down.
A stepped hole 17 is formed at the boundary between the screw hole 11 and the guide hole 12, and an O-ring 18 is disposed in the hole 17 to keep the stepped hole 17 and the sealing plate 3 airtight.

The severing holder 7 is formed in a substantially cylindrical shape by an aluminum material, the small-diameter shaft portion 13 projects from the lower end portion thereof, and a through hole 19 is formed therethrough. A needle tube 20 made of a spring pin, which is a breaking member, is press-fitted into the lower end portion of the small-diameter shaft portion 13, and the pointed end portion 20 a is always positioned immediately above the breaking groove 4.
In the figure, 21 is an O-ring mounted on the peripheral surface of the small-diameter shaft portion 13, 22 is a closing pin disposed at the upper end portion of the through hole 19, its flange 22 a, and a stepped hole 23 at the upper end portion of the through hole 19. The opening 24 of the through hole 19 is maintained airtight by the O-ring 25 disposed between the inner edge of the through hole 19 and the flange 22a. ing.

A reset spring 26 is inserted between the cylinder holder 6 and the sever holder 7, and the elasticity of the spring 26 urges the sever holder 7 and the cylindrical housing 8 to move upward.
Further, pins 27, 27 project in the diameter direction of the peripheral surface of the severing holder 7, and the tip ends thereof are inserted into the pin holes of the cylindrical housing 8, so that the cylindrical housing 8 and the severing holder 7 are the same. It is possible to move.
In the embodiment, one pin 27 is inserted from a pin insertion hole of an injection cylinder, which will be described later, and is press-fitted into the peripheral surface of the breaking holder 7, and the other pin 27 is inserted into the pin hole of the cylindrical housing 8.
In the figure, reference numeral 30 denotes a nozzle hole formed on the peripheral surface of the severing holder 7, and a nozzle hole 31 communicating with the through hole 19 is opened at the back thereof.

The cylindrical housing 8 is formed in an octagonal column shape with a synthetic resin, and a hollow chamber 32 having a circular cross section is formed therein, and the cylinder holder 6 and the tearing holder 7 are slidably accommodated in the hollow chamber 32. .
A through hole 33 communicating with the through hole 19 is opened at the upper end surface of the cylindrical housing 8, and the guide holes 28, 28 are formed at positions opposed to the lower peripheral surface. Pins 15 and 15 are inserted.
The front ends of the pins 15 and 15 are engaged with pin holes 16 and 16 formed on the inner side surfaces of the outer covers 9a and 9b, and the cylindrical housing 8 is supported through the front pins 15 and 15 so as to be vertically movable. doing.

  An elliptic cylinder-shaped injection cylinder 34 projects from the upper peripheral surface of the cylindrical housing 8, and an injection hole 35 communicating with the injection hole 30 and a pin insertion hole 36 are arranged vertically in the inside of the cylindrical housing 8. The distal end portion of 27 is locked, and the other end portion is press-fitted into the tear-off holder 7 so that the tear-off holder 7 and the cylindrical housing 8 can be moved through the pins 27 and 27.

  The pair of outer covers 9a and 9b are resin-molded by dividing the severing device 2 into two in the front-rear direction, and a ship-bottomed recess 38 for accommodating one side of the cylindrical housing 8 and an upper portion of the gas cylinder 1 A funnel-shaped recess 39 that accommodates one side is formed, and the pin holes 16 and 29 are formed at the upper and lower positions of the recess 38.

The joint surfaces of the outer covers 9a and 9b are formed as flat surfaces, a partition wall 40 is formed at the front portion thereof, and a seat belt introduction groove 41 is formed obliquely downward at the rear portion, and faces the introduction groove 41. The cutter 42 is supported via pins 43 and 43, and is held between the joint surfaces of the outer covers 9a and 9b.
In the figure, reference numeral 44 denotes a belt relief portion having a pointed end portion provided in the inner portion of the seat belt introduction groove 41, and the cut end of the seat belt 45 is widened so that it can be cut smoothly.

  Grooves 45a and 45b are formed in the upper parts of the outer covers 9a and 9b, and two large and small arc-shaped pin holes 46 and 47 are provided at the rear ends of the grooves 45a and 45b. Pin holes 48a and 48b having a circular cross section are formed vertically, and rectangular concave grooves 49a and 49b are formed at the front ends of the outer covers 9a and 9b.

The operation lever 10 is composed of a pair of lever pieces 50 and 51 and a lever case 52 connecting the lower parts thereof, and the lever pieces 50 and 51 are thick steel plates. Is formed into a substantially inverted L-shape that is symmetrical.
As shown in FIG. 11, pin holes 52 and 53 are formed close to the rear ends of the lever pieces 50 and 51, and pins 54 and 55 are press-fitted into the pin holes 52 and 53. The part is movably inserted into the pin holes 46 and 47.

In addition, concave grooves 56, 57 are formed in the upper front ends of the lever pieces 50, 51, and holding portions 58, 59 are bent into a substantially U-shaped cross section below the grooves 58, 59. An injection cylinder 34 is accommodated inside so as to be movable up and down.
In the figure, reference numerals 60 and 61 denote concave grooves formed in reinforcing beads described later of the lever pieces 50 and 51, and reference numeral 62 denotes a synthetic resin lever case attached to the lower part of the lever pieces 50 and 51. 62.

The lever case 62 is resin-molded in a substantially U-shaped cross section, and a reinforcing bead 63 projects from the inside thereof. An engagement groove is formed between both sides of the bead 63 and both side walls of the lever case 62. 64 and 65 are formed, and lower portions of the lever pieces 50 and 51 are inserted into the engaging grooves 64 and 65, respectively.
Then, screws 66 are screwed into the concave grooves 60, 61 formed in the reinforcing bead 63, and the seats of the heads are seated in the concave grooves 60, 61 to hold the lever pieces 50, 51. Yes.
In the figure, 67 is a plurality of friction forming grooves formed on the grip side end surface of the lever case 62, 68 is a groove provided in the front part of the breaking device 2, and outer covers 9a, 9b. The inner surface of the operation lever 10 and the partition walls 40 and 40 are partitioned, and the lower portion of the operation lever 10 can be inserted into the groove 68.

A safety device 69 is detachably attached to the upper end portion of the breaking device 2, and is composed of a synthetic resin peeling tab 70, a stopper 71, and a flexible synthetic resin connecting piece 72 for connecting them. ing.
Among them, the peeling tab 70 is formed in a flat plate-like tongue piece shape, a ring-shaped holding portion 73 is formed at the front end portion thereof, and a pair of pins 74 are protruded from the rear end portion. The holes 48a and 48b are detachably fitted.

The stopper 71 is formed in a rectangular plate shape that can be engaged with the concave grooves 49a and 49b and the concave grooves 56 and 57, and the rotation operation of the operation lever 10 is made impossible or impossible by the insertion / extraction operation of the stopper 71. Yes.
In the figure, 71a and 71a are a pair of elastic pieces protruding from the end of the stopper 71, and a protrusion is provided at the tip of the elastic piece, and the protrusion can be engaged with the side walls in the concave grooves 49a and 49b.

In addition, in the figure, reference numeral 75 denotes a hammer member attached to the bottom surface of the gas cylinder 1, which is composed of a steel holding ring 76 and a hammer shaft 77 obtained by quenching the steel member. A tip 77 a is formed at the tip of the shaft 77.
Then, the gas cylinder 1 is filled with carbon dioxide, the mouth portion is sealed with the sealing plate 3, the holding ring 76 is welded to the bottom surface of the gas cylinder 1, and the hammer shaft 77 is attached together with the elastic member C ring 78. The hammer ring 77 is firmly attached by inserting the C ring 78 into the inner taper surface 79 of the holding ring 76.

In the figure, reference numerals 80 and 81 denote concave curved gripping portions formed at the front and rear positions of the lower peripheral surface of the breaking device 2, and the gripping portions 80 and 81 have a plurality of concave grooves 82 and 83 for forming friction. Is formed.
In this embodiment, the through hole 19 and the through hole 33 are formed at the upper end portions of the severing holder 7 and the cylindrical housing 8 and are closed by the closing pin 21 and the O-ring 25. It is also possible to close the upper end of the cylindrical housing 8.

The gas cylinder sealing plate, the gas cylinder breaking device and the fire extinguishing gas injector constructed as described above are manufactured by attaching the sealing plate 3 to the gas cylinder 1 and manufacturing the components and assembling the sealing device 2. The fire extinguishing gas injector is assembled by incorporating the sealing device 2.
First, when the sealing plate 3 is manufactured, a thin steel plate as a raw material is press-molded into a disk shape having a slightly smaller diameter than the mouth of the gas cylinder 1, and a sealing groove 4 having the same diameter as the needle tube 20 is formed at the center thereof. It press-molds, this is mounted on the mouth part of the gas cylinder 81 filled with carbon dioxide, and a periphery is welded.
The shape of the breaking groove 4 may be an annular groove as shown in FIGS. 6 and 8A, a substantially U-shape or tongue-like shape as shown in FIGS. 8B and 8C, or FIG. ) And (e). As described above, the sealing plate 3 has a simpler structure and can be easily manufactured as compared with the conventional sealing plate, so that it can be manufactured at low cost.

Thus, after attaching the sealing plate 3 to the gas cylinder 1, the holding ring 76 is welded to the bottom surface thereof, the C ring 78 and the hammer shaft 77 are inserted into the center through hole, and the C ring 78 is placed inside the holding ring 76. The hammer shaft 77 is firmly attached by engaging with the taper surface 79, and the tip end portion 77 a of the hammer shaft 77 is projected outside the holding ring 76.
And after attaching the sealing plate 3 and the hammer member 75 to the gas cylinder 1, the gas cylinder 1, the sealing plate 3, and the hammer member 75 are plated together, and this is surface-treated reasonably.

  The breaking device 2 includes a pair of outer covers 9a and 9b, a cylinder holder 6 and a breaking holder 7, a cylindrical housing 8, an operation lever 10, and a safety device 69, and of these, the outer cover. 9a, 9b is formed by resin-molding the severing device 2 in two in the front-rear direction, forming a bottom 38 on the inside, forming grooves 45a, 45b on the top, and forming a funnel-shaped recess 39 on the bottom. Then, the partition wall 40 is projected from the front part to form the concave groove 68, and the seat belt introduction groove 41 is formed at the rear part.

The cylinder holder 6 is formed into a substantially cylindrical shape by aluminum die casting, a screw hole 11 is formed at a lower end portion thereof, a guide hole 12 communicating with the screw hole 11 is formed therein, and a stepped hole 17 at the lower end portion is formed with O A ring 18 is attached.
And pin holes 14 and 14 are formed in the diameter direction of a peripheral surface, and pins 15 and 15 are press-fitted into the pin holes 14 and 14. In this case, after the cylinder holder 6 is inserted into the cylindrical housing 8, the pins 15 and 15 are press-fitted from the outside of the guide holes 28 and 28 of the cylindrical housing 8 so that the cylindrical housing 8 is assembled so as to be movable up and down.

The breaker holder 7 is formed in a substantially cylindrical shape with an aluminum material, and one pin 27 is protruded from the upper peripheral surface thereof, and its tip is inserted into a pin hole of the cylindrical housing 8. After assembling the tear-off holder 7, one pin 27 is inserted from the pin insertion hole of the injection cylinder 34 and press-fitted, and the other pin 27 is press-fitted into the tear-off holder 7 from the outside of the cylindrical guide 8.
A nozzle hole 31 is formed in the upper peripheral surface of the severing holder 7, a nozzle hole 31 communicating with the through hole 19 is formed in the back of the nozzle hole 30, and a small-diameter shaft portion 13 is formed at the lower end of the severing holder 7. A through hole 19 is formed so as to project through the inside, an annular groove is formed in the lower peripheral surface of the small diameter shaft portion 13, an O-ring 21 is attached to the annular groove, and a needle tube is attached to the lower end portion of the small diameter shaft portion 13. 20 is press-fitted.

The cylindrical housing 8 is formed into an octagonal column shape with a synthetic resin, a hollow chamber 32 having a circular cross section is formed therein, a through hole 33 communicating with the through hole 19 is opened on the upper end surface, and the lower circumferential surface is opposed to Longitudinal guide holes 28, 28 are formed.
An elliptic cylinder-like injection cylinder 34 protrudes from the upper peripheral surface of the cylindrical housing 8, and an injection hole 35 communicating with the injection hole 30 and a pin insertion hole 36 are arranged vertically.

The operation lever 10 is composed of a pair of steel plate lever pieces 50 and 51, and a synthetic resin lever case 52 connecting the lower parts thereof, and of these lever pieces 50. , 51 are formed by pressing a steel plate into a substantially symmetrical L-shape, and pin holes 52, 53 are formed close to the rear ends thereof, and pins 54, 55 are formed in these pin holes 52, 53. Press fit.
Concave grooves 56, 57 are formed in the upper front ends of the lever pieces 50, 51, and holding portions 58, 59 are bent in a substantially U-shaped cross section below the grooves.

On the other hand, the lever case 62 is resin-molded into a substantially U-shaped cross section, and reinforcing beads 63 are provided on the inside thereof, and are engaged between both sides of the bead 63 and both side walls of the lever case 62. Grooves 64 and 65 are formed.
Then, the lever case 62 is attached to the lower part of the lever piece 50, 51, the lower part of the lever piece 50, 51 is inserted into the engaging groove 64, 65, and the reinforcing bead 63 is inserted. A screw 66 is screwed into the intermediate portion of the screw, and this is seated on the concave grooves 60 and 61 to fix the lever pieces 50 and 51, and the operation lever 10 is assembled as shown in FIG.

The safety device 69 is composed of a synthetic resin peeling tab 70 and a stopper 71, and a flexible synthetic resin connecting piece 72 for connecting them, of which the peeling tab 70 is formed in a flat tongue shape. A ring-shaped holding portion 73 is formed at the front end portion, and a pair of pins 74 project from the rear end portion.
The stopper 71 is resin-molded into a rectangular plate shape, a pair of elastic pieces 71a and 71a are projected from the ends, and a projection is projected outward from the tip.

  When assembling the components thus manufactured, first, the small diameter shaft portion 13 of the severing holder 7 is inserted into the guide hole 12 of the bomb holder 6, and the set spring 26 is disposed between the bomb holder 6 and the severing holder 7. The closing pin 22 is inserted into the upper portion of the through hole 19 of the severing holder 7, the O-ring 25 is mounted on the flange 22 a, and the spring 24 is inserted between the flange 22 a and the stepped hole 23.

After that, the assembly of the cylinder holder 6 and the tear-off holder 7 is inserted into the hollow chamber 32 in the cylindrical housing 8, and the upper end portion of the closing pin 22 is inserted into the through hole 33 at the upper end portion of the cylindrical housing 8, and then the guide The holes 28, 28 and the pin holes 14, 14 of the cylinder holder 6 are aligned, and the pins 15, 15 are press-fitted into the pin holes 14, 14 from the outside of the cylindrical housing 8, so that the cylindrical housing 8 can be moved up and down. .
Further, one pin 27 is press-fitted from the outside of the cylindrical housing 8 into the pin hole on the peripheral surface of the tear-off holder 7, and the other pin 27 is press-fitted into the pin hole on the peripheral surface of the tear-off holder 7 from the pin insertion hole 36. To do.

Then, the injection cylinder 34 of the cylindrical housing 8 after assembly is inserted into the holding portions 58 and 59 of the operation lever 10, and the cylindrical housing 8 is accommodated in the recess 38 of one outer cover 9a. The rear end portion of the lever 10 is accommodated in the concave groove 45 a, and the rear inner end surfaces of the lever pieces 50 and 51 are engaged with the upper end surface of the cylindrical housing 8.
Thereafter, the cutter 42 is attached to the pins 43, 43 on the rear side, the other outer cover 9b is attached to the outer surface of the cylindrical housing 8, and the other ends of the pins 54, 55 are connected to the pin holes 46, 47. And the joining surfaces of the pair of outer covers 9a and 9b are joined.

Then, the pins 74, 74 of the safety device 69 are pushed into the pin holes 48a, 48b of the outer covers 9a, 9b, the stopper 71 is inserted into the concave grooves 49a, 49b, 56, 57, and a pair of elastic pieces 71a, 71a. Is pressed against the side walls of the concave grooves 49a and 49b to prevent them from coming off.
After assembling the breaking device 2 in this way, the screw portion 5 of the gas cylinder 1 is screwed into the screw hole 11 of the cylinder holder 6 and loaded. This situation is as shown in FIGS.

When such a gas cylinder 1 is loaded, the tear holder 7 and the cylindrical housing 8 connected by the pins 27 and 27 are pushed up by the set spring 26, and the sharp end 20 a of the needle tube 20 is sealed by the seal plate 3. It is located immediately above the groove 4. This situation is as shown in FIG.
Further, the upper end portion of the cylindrical housing 8 is engaged with the rear inner end surfaces of the lever pieces 50 and 51, and the operation lever 10 is urged so as to be pivotable upward with the pin 47 as a fulcrum. The case 62 is spaced apart from the outside of the concave groove 68, the injection cylinder 36 is located below the holding portions 58 and 59, and the upper peripheral surface thereof and the upper inner surfaces of the holding portions 58 and 59 An empty space is formed between them. This situation is as shown in FIGS.

In this case, the stopper 71 is inserted into the concave grooves 49a and 49b of the outer covers 9a and 9b and the concave grooves 56 and 57 of the lever pieces 50 and 51, and the pins 74 and 74 are inserted into the lever pieces. The safety devices 69 are functioned by being inserted into the pin holes 48a and 48b of the 50 and 51, restraining the rotation of the lever pieces 50 and 51 and preventing the operation lever 10 from operating. This situation is as shown in FIGS.
Therefore, under this situation, an erroneous operation of the operation lever 10 is prevented, and it is not accidentally broken. The fire extinguishing gas injector loaded with the gas cylinder 1 is housed and stored in a suitable position in the passenger compartment, for example, in a recessed door pocket provided inside the door.

Under such circumstances, if a car equipped with a fire extinguisher gas injector has trouble and the occupant escapes from the car, the fire extinguishing gas injector is held with one hand and a seat belt provided at the rear end is introduced. A sheet belt 45 is inserted into the groove 41, and the sheet belt 45 is pulled down downward at a stroke, and the sheet belt 45 is cut by the cutter 41. This situation is as shown in FIG.
After releasing the occupant from the restraint of the seat belt 45 in this manner, the fire extinguishing gas injector is held almost horizontally, and the tip 77a of the hammer member 75 is vigorously collided toward the windshield (not shown) near the occupant. Crush, expand this crushing part and escape out of the car.
As described above, the present invention can ensure the safety of the occupant in the event of an emergency by using the fire extinguishing gas injector without using an emergency dedicated member.

On the other hand, for example, when a fire has occurred in the passenger compartment and the fire is to be extinguished, the seat belt 45 is cut as described above, the occupant's restraint is released, the fire extinguishing gas injector is held, and the safety device 69 is first turned on. Remove. In this case, the peeling tab 73 of the safety device 69 is held and pulled up vigorously, and the pins 74 and 74 are pulled out from the pin holes 48a and 48b.
Thereafter, the connecting piece 72 is pulled forward to pull out the stopper 71 from the concave grooves 49a and 49b and the concave grooves 56 and 57, and the restraint of the lever pieces 50 and 51 or the operation lever 10 by the stopper 71 is released.

Thereafter, the tearing device 2 is grasped with one hand, the lever case 62 is put on the hand, and the operation lever 10 is rotated inward with the inner pin 54 as a fulcrum.
In this way, the lever pieces 50 and 51 move together with the rotational displacement of the operation lever 10, the rear inner end presses the upper end of the cylindrical housing 8, and the housing 8 is moved to the set spring 26. The seal holder 7 moves together with this, and the set spring 26 is compressed.

Then, the needle tube 20 approaches the sealing plate 3 and the pointed end portion 22a moves immediately above the breaking groove 4 to be pierced into the breaking groove 4 and slightly broken. This situation is as shown in FIGS.
Thus, when the pointed end portion 22a pushes and breaks through the bottom of the groove 4 of the breaking groove 4, the direction of breaking is formed along the bottom of the thin groove, and the breaking along the groove is promoted.

On the other hand, when the operation lever 10 is rotated and the sealing is started, the pins 54 and 55 are moved along the pin holes 46 and 47, and the outer pin 55 is moved through the short pin hole 47. Engage with the back.
Therefore, the operation lever 10 rotates in the same direction with the outer pin 55 as a fulcrum to break through the sealing plate 3, the outer periphery thereof is inserted into the sealing plate 3, and the fire extinguishing gas in the gas cylinder 1 is guided into the guide hole 12. It is ejected vigorously, and ejected from the nozzle hole 31 through the through hole 19 to the outside. This situation is as shown in FIG. 12 (c) and FIG.

Thus, the substantial breakage of the sealing plate 3 is performed by rotating the operation lever 10 with the outer pin 55 as a fulcrum, so that the principle of the lever is more than that with the inner pin 54 as a fulcrum. As a result, the rotational force of the operating lever 10 or the pressing force of the pointed end 22a is reduced, and it can be easily broken with a small force.
In addition, as described above, along with the pressing of the breaking groove 4 by the pointed end portion 22a, the tearing direction is urged along the concave groove, and accordingly, the pressing force of the pointed end portion 22a or the rotational force of the operation lever 10 is increased. Is reduced.

When the hand is released from the lever case 62 after the fire is extinguished, the cylindrical housing 8 and the tear-off holder 7 are pushed up by the set spring 26, and the rear end side inner end surfaces of the lever pieces 50 and 51 are formed in the cylindrical housing. When the pin 55 is pushed up by 8, the pin 55 returns to the fulcrum and returns to the original position.
Thereafter, the gas cylinder 1 that has consumed the fire extinguishing gas is removed, and a new gas cylinder 1 is loaded instead to wait for the next use.

14 to 18 show another embodiment of the present invention, and the same reference numerals are used for portions corresponding to the configuration of the above-described embodiment. 14 and 15 show a second embodiment of the present invention. In this embodiment, the injection cylinder 34 is separated from the cylindrical housing 8, and the injection cylinder 34 is formed in the upper part of the cylindrical housing 8. It is slidably inserted into a slide hole 81 communicating with the through hole 19 formed in the tear-off holder 7 through the through hole 80.
The injection cylinder 34 is provided with a flange 82 projecting from the peripheral surface of the intermediate portion, and a spring 83 is inserted between the flange 82 and the peripheral surface of the severing holder 7 so that it can be moved forward by the elasticity of the spring 83. It is fast.

An annular groove 84 communicating with the inside is formed in the peripheral surface of the intermediate portion of the injection cylinder 34, and O-rings 85, 86, 87 are mounted on both sides of the annular groove 84 via the annular grooves, Is maintained.
A through hole 88 communicating with the nozzle hole 31 is formed inside the injection cylinder 34, and a through hole 89 communicating with the annular groove 84 is formed at an intermediate portion of the through hole 88. In the figure, 90 is a screw for closing the rear end portion of the through-hole 88.
Although not shown, a tear groove 4 similar to that described above is formed in the center of the sealing plate 3, and a safety device 69 similar to that described above is detachably attached to the upper end of the seal device 2.

Prior to the breaking operation of the second embodiment, the injection cylinder 34 is urged forward by the spring 83, and the screw 90 at the rear end thereof is engaged with the rear peripheral surface of the breaking holder 7, so that the injection cylinder 34 Is restricted from protruding forward.
In addition, the attaching / detaching operation of the safety device 69, the cutting of the seat belt 45 by the seat belt introduction groove 41 and the cutter 42, and the breaking operation of the wind glass by the hammer member 75 in the second embodiment are described above. It is the same.

Next, in the fire extinguishing operation by the fire extinguishing gas injector of the second embodiment, first, the safety device 69 is removed, the restraint of the operation lever 10 or the lever pieces 50 and 51 is released, and the lever case is released. By holding 62, the operation lever 10 is sequentially rotated around the pins 54 and 55 as fulcrums, and the cylindrical housing 8 and the tear holder 7 are pushed down to break the sealing plate 3.
In this case, the rotational force of the operation lever 10 by the outer pin 55 or the reduction of the breaking force by the tip 20a and the promoting action of the breaking by the concave groove are the same as in the above-described embodiment.

Thus, the extinguishing gas of the gas cylinder 1 is ejected from the stepped hole 17 to the guide hole 12 by the rupture, and this moves from the needle tube 20 to the through hole 19.
On the other hand, by the turning operation of the operation lever 10, the rear end portions of the holding portions 58 and 59 are engaged with the flange 82, and the injection cylinder 34 is moved backward against the spring 83.
When the annular groove 84 communicates with the through hole 19 by the rearward movement of the injection cylinder 34, the fire extinguishing gas in the through hole 19 is guided from the annular groove 84 through the through hole 89 to the through hole 88, and this is discharged from the nozzle hole 31. It is injected to the fire source through the injection hole 35. This situation is as shown in FIG.

On the other hand, when the hand is released from the operation lever 10 immediately after the sealing, the cylindrical housing 8 and the sealing holder 7 are pushed up by the set spring 26, and the lever pieces 50 and 51 engaged with the cylindrical housing 8 are pushed up. The rear inner end is pushed up, and the operation lever 10 rotates upward with the pin 55 as a fulcrum.
For this reason, the engagement between the rear end portions of the holding portions 58 and 59 and the flange 81 of the injection cylinder 34 is released, and the injection cylinder 34 projects forward by the spring 83 so that the annular groove 84 and the through hole 19 communicate with each other. The upper opening of the through hole 19 is closed, the conduction between the through hole 19 and the nozzle hole 31 is interrupted, and the injection of the fire extinguishing gas is stopped.

Accordingly, a part of the fire extinguishing gas remains in the guide hole 12 and the through hole 19.
Therefore, if the operating lever 10 is gripped to move the injection cylinder 34 rearward and the annular groove 84 is communicated with the through hole 19, the residual gas is introduced from the through hole 19 through the annular groove 84 to the through hole 89. Then, it moves through the through-hole 88 and is ejected to the outside.

  As described above, in the second embodiment, the cylindrical housing 8 and the tear holder 7 are moved downward by the rotational displacement of the operation lever 10, and the backward displacement of the injection cylinder 34 is linked to the through hole. 19 is communicated with the annular groove 84 and the fire-extinguishing gas is safely ejected to the outside, while part of the fire-extinguishing gas is left inside by releasing the operation lever 10 immediately after the breakage, thereby preventing the waste of the gas. At the same time, the residual gas is ejected to the outside by re-operation of the operation lever 10, so that effective use and quick fire extinguishing are achieved.

FIGS. 16 to 18 show other forms of the breaking groove 4 and illustrate the planar form of each breaking groove 4 obtained by press-forming a thin steel plate.
Of these, FIGS. 16 and 17 show a third embodiment of the present invention, in which the tear groove 4 is formed in a cross shape in the center of the sealing plate 3, and the groove width of each groove is equal. The groove bottom is formed into a large concave curved surface, and the corner and center of the center of each groove are partitioned by an oblique boundary line 91 to break the broken groove 4 at the time of breaking. The tendency to seal is promoted. In this case, each groove bottom may be formed on a flat surface having a constant depth.

FIG. 18 shows a fourth embodiment of the present invention, wherein each of the tear grooves 4 is formed in various plane forms. Of these, (a) shows two semicircular arc-shaped break grooves 4 arranged back to back. Then, the tip 20a of the needle tube 20 is pressed against the central portion so that the two broken grooves 4 are simultaneously and promptly broken along the groove direction.
(B) shows six star-shaped sealed grooves 4 arranged radially at equal angles to form a star, pressing the tip 20a of the needle tube 20 to the center, and arranging them at equiangular positions. The six broken grooves 4 are simultaneously and promptly broken along the groove direction.
(C) relates to the application form of (b), in which eight linear rupture grooves 4 are radially arranged at equal angles, the pointed portion 20a of the needle tube 20 is pressed to the center thereof, and the equiangularity position The eight breaking grooves 4 arranged in the above are simultaneously and promptly broken along the groove direction.

  As described above, the gas cylinder sealing plate, the gas cylinder breaking apparatus, and the fire extinguishing gas injector according to the present invention can be easily and quickly opened with a small force by a simple structure, and can be quickly extinguished with a small gas cylinder loaded. For example, it is suitable for a home or office or a simple fire extinguisher for vehicle use.

It is a front view which shows the fire-extinguishing gas injector to which this invention is applied, and has shown the condition before ejection of fire-extinguishing gas. The principal part is shown by the front view of FIG. It is a top view of FIG. The principal part of sectional drawing which follows the AA line of FIG. 3 is shown. It is a perspective view which decomposes | disassembles and shows the principal part of this invention. It is the top view of the gas cylinder used for this invention, and the sealing groove | channel of the sealing board is illustrated. It is an expanded sectional view which follows the BB line of FIG. It is a top view which shows the various shape of the tearing groove | channel applied to this invention, (a) is an elliptical annular groove, (b), (c) is substantially U-shaped thru | or a tongue piece shape, (d), ( e) is formed in a semicircular shape and a curved line shape.

It is a rear view of the operation lever used for this invention. It is sectional drawing which follows the CC line of FIG. It is a front view of the lever piece which comprises the operation lever used for this invention. It is sectional drawing which expands and shows the rupture situation by the rupture member of the sealing board to which this invention is applied, (a) is the situation where the tip part of the rupture member is inserted and pressed into the concave groove of the sealing board. (B) shows the situation where the tip of the rupture member is pierced by pushing through the rupture groove of the sealing plate, and (c) shows that the outer periphery of the lower end of the rupture member is inserted inside the sealing plate Shows the situation.

It is sectional drawing which shows the principal part of the fire-extinguishing gas injector to which this invention is applied, and has shown the condition where the operation lever is operated and the breakage is completed and the fire-extinguishing gas is ejected. It is sectional drawing which shows the principal part of the fire-extinguishing gas injector of the 2nd Embodiment of this invention, and has shown the condition before ejection of fire-extinguishing gas. The situation at the time of ejection of the fire-extinguishing gas of the fire-extinguishing gas injector of the second embodiment is shown. It is a top view which shows the sealing board applied to the 3rd Embodiment of this invention, and its tearing groove | channel. It is an expanded sectional view which follows the DD line of FIG. (A), (b), (c) is a top view which shows the sealing board applied to the 4th Embodiment of this invention, and its tearing groove | channel.

DESCRIPTION OF SYMBOLS 1 Gas cylinder 2 Breaking device 3 Sealing plate 4 Sealing groove 6 Bomb holder 7 Breaking holder

8 Cylindrical housing 10 Operation lever
12 Guide hole 19 Through hole 20 Sealing member (needle tube)
20a point

31 Nozzle hole 41 Sheet belt introduction groove 45 Sheet belt 49a, 49b Recessed groove 54 Pin (inner pin)
55 pin (outside pin)
56, 57 concave groove 69 safety device

70 peeling tab 71 stripper 72 connecting piece 74 pin 75 hammer member 77a pointed end

82 Flange 84 Annular groove 88 Through hole 89 Through hole

Claims (18)

  In the sealing plate of the gas cylinder that is sealed at the mouth of the gas cylinder and is broken by the tip of the breaking member that moves downward from above, a sealing groove that can press the tip is formed at the center of the sealing plate A gas cylinder sealing plate characterized by that.   The sealing plate for a gas cylinder according to claim 1, wherein the breaking groove is formed in an annular shape, a substantially U shape, an arc shape or a curved shape, or a cross shape or a star shape.   The sealing plate for a gas cylinder according to claim 1, wherein the outer diameter of the breaking groove is formed to be substantially the same as that of the breaking member.   The sealing plate for a gas cylinder according to claim 1, wherein a tip end portion of a breaking member is pressed into the breaking groove so that the breaking can be formed along the breaking groove.   The sealing plate of the gas cylinder of Claim 1 which formed the cross-sectional shape of the said breaking groove in V shape or a concave curved surface shape.   A gas cylinder with a mouth sealed with a sealing plate is detachably attached to a breaking device, and a sealing holder having a through-hole communicating with a nozzle hole and having a breaking member with a pointed portion at the lower end is sealed. A gas cylinder tearing device disposed above a plate so as to be movable up and down, wherein a tear groove capable of pressing the tip end portion is formed at a central portion of the sealing plate.   7. The gas cylinder severing device according to claim 6, wherein an outer diameter of the severing groove is substantially the same as that of the severing member.   7. The gas cylinder severing device according to claim 6, wherein a piercing end of the severing member is pressed into the severing groove so that the severing can be formed along the severing groove.   7. A gas cylinder severing device according to claim 6, wherein a base end portion of an operation lever is rotatably connected to an upper part of the severing device, and the operation lever is disposed so as to be engageable above the severing holder. .   A base end portion of an operation lever is rotatably connected to the upper portion of the breaking device via two inner and outer pins, and the operation lever is rotated with the inner pin serving as a fulcrum to point the tip portion of the breaking member. After that, the operation lever is rotated with the outer pin as a fulcrum, and the breaking member is further moved downward so that the outer periphery of the breaking member can be inserted inside the sealing plate. Item 7. A gas cylinder breaker according to Item 6.   7. A gas cylinder severing device according to claim 6, wherein a cylindrical housing is movably mounted on the outer side of the severing holder, and the cylindrical housing is provided on the severing device so as to be vertically movable.   An injection cylinder having a nozzle hole formed therein is slidably inserted into the severing holder, a flange projecting from the injection cylinder is disposed so as to be engageable with an operation lever, and an annular groove is formed on the peripheral surface of the injection cylinder. And forming a through hole communicating with the nozzle hole and a through hole communicating with the annular groove inside the injection cylinder, moving the injection cylinder via the rotational displacement of the operation lever, and 7. The gas cylinder severing device according to claim 6, wherein the pierced holder can be communicated with a through hole.   13. The gas cylinder according to claim 12, wherein after the breaking, the conduction between the annular groove and the through hole of the breaking holder is interrupted through the rotational displacement of the operation lever so that the extinguishing gas can remain inside the breaking holder. Smashing equipment.   A safety device is detachably attached to the upper portion of the breaking device, and the safety device is engaged with a peeling tab protruding from a pin that can be locked to the breaking device, an operating lever, and each concave groove of the breaking device. 7. A gas cylinder severing device according to claim 6, comprising a stopper capable of being mated, and a flexible connecting piece connecting the peeling tab and the stopper.   A gas cylinder holder whose mouth is sealed with a sealing plate is detachably attached, and a shaft member is slidably inserted into the guide hole of the gas cylinder holder, and a sealing member is formed with a pointed end formed at the lower end. A tearing device in which a tearing holder is arranged up and down, a through hole and a nozzle hole communicating with a guide hole are formed in the tearing holder, and the tearing holder is moved down to be sealed by a pointed portion of a tearing member. In the fire extinguishing gas injector made possible, a tearing groove capable of pressing the tip end portion is formed in the center portion of the sealing plate, and a base end portion of an operation lever is formed at the upper portion of the breaking device. The pin is pivotably connected via a pin, and the operation lever is rotated with the inner pin as a fulcrum to insert the sharp end of the breaking member into the sealing plate, and then the operation lever with the outer pin as a fulcrum. Rotate-to further move the tearing member down so that the outer periphery of the tearing member is inside the sealing plate. Extinguishing gas injector being characterized in that the insertable.   The fire-extinguishing gas injector according to claim 15, wherein the breaking groove is formed in an annular shape, a substantially U shape, an arc shape or a curved shape, or a cross shape or a star shape.   The fire extinguishing gas injector according to claim 15, wherein a seat belt introduction groove into which a seat belt can be inserted is provided on an outer peripheral surface of the breaking device, and a cutter is disposed so as to face the introduction groove.   The fire-extinguishing gas injector according to claim 15, wherein a hammer member having a tip portion is provided at a bottom portion of the gas cylinder so that the wind glass can be crushed through the tip portion of the hammer member.

Images