Fire hose for fire extinguisher

Abstract

Provided is a fire extinguisher hose that enables safe and convenient use of a fire extinguisher hose that is not commonly used in an emergency during a fire. 【Solution means】 A fire extinguisher hose that can connect a main body container filled with high-pressure gas for fire extinguishing and a nozzle has a passage 27 through which high-pressure gas can flow, a hose main body 11 having bendable flexibility, a guide 12 for mechanically guiding the hose main body 11, a long spring 12 having a restoring force in a direction to keep the hose main body 11 in a straight shape and having bendable flexibility, a main body attachment side fitting 16 to which one end of the spring 12 can be fixed to the main body container 2, and a tip side fitting 14 to which the other end of the spring 12 can be fixed to the nozzle 13. Thereby, the fire extinguisher hose 10 can be easily attached or replaced to the main body outlet of an existing general fire extinguisher or a general fire extinguisher before sale.

Description

Technical Field

[0001] The present invention relates to a hose for a fire extinguisher.

Background Art

[0002] Patent Document 1 is a device for automatically releasing the safety plug of a fire extinguisher. A unlocking portion is provided at the bent portion of the hose of the fire extinguisher. When the hose is directed towards the fire source, the unlocking portion operates around the fulcrum, the spring is released, and the safety plug pops out. Thus, in the event of a fire, when the hose is directed towards the fire source, the safety plug is automatically released, enabling the initial fire extinguishing effect to be exerted.

[0003] Also, Patent Document 2 is a safety device for a fire extinguisher. The rotating piece can rotate as the hose moves up and down, and an annular portion formed at the tip of the rotating piece loosely fits over the hose to lock the hose. Thereby, the activation lever can be freely pushed down, enabling the fire extinguisher to be activated smoothly in case of an incorrect operation.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Patent Document 2

Summary of the Invention

Problems to be Solved by the Invention

[0005] Generally widely used known fire extinguishers include powder-based, water-based, or gas-based fire extinguishers. The cylindrical main body container is placed vertically on the floor, and the nozzle at the tip of the hose pulled out from the upper end of the main body container is locked to the outer wall on the side of the main body container. In many cases, the basic principle of the fire extinguisher has not been substantially changed for a long time.

[0006] When using a conventional fire extinguisher, during a fire-fighting operation, the main body container is carried to the fire scene. Then, on-site, the nozzle at the tip of the hose is removed from the fire extinguisher body, the operating lever provided at the upper end of the container body is pulled up, and when the nozzle at the tip of the hose is directed towards the fire location, a fire extinguishing agent or the like is ejected from the nozzle at the tip of the hose. Since high-pressure gas is ejected when ejecting the fire extinguishing agent or the like from the nozzle, the nozzle or the hose body near the nozzle is held with one hand, and the direction of the nozzle is operated so that the gas and the fire extinguishing agent ejected from the tip of the nozzle are directed towards the fire location and ejected.

[0007] At this time, if one slackens the grip with one hand near the nozzle at the tip of the hose, the nozzle or the hose body will be released from the palm, the hose body that has become separated from the hand will start to flail independently, and once the sway of the hose body begins to become chaotic, it is difficult to suppress the flailing hose body. Once the flailing operation of the hose body starts, it not only hinders the original fire-fighting activity, but also causes the fire extinguishing agent ejected from the nozzle to scatter around, not only contaminating the floor surface, wall surface, equipment, and its surroundings, but also falling on the operator's body, resulting in a huge loss for post-treatment and restoration.

[0008] Also, for general fire extinguishers, in the description of "How to Use the Fire Extinguisher" in the instruction manual, some display a caution stating that "Operating without holding the hose or letting go of the hand will cause the hose to swing violently, which is very dangerous."

[0009] During the actual use of general fire extinguishers, there is no time to read this kind of handling precautions, and it is not always possible to hold by hand and appropriately eject the powder, water, high-pressure gas, etc. ejected from the nozzle in the target direction. Even if fire-fighting training is carried out regularly, there may be a situation where the operation cannot be surely performed in an emergency.

[0010] Even if fire-fighting training has been carried out, in reality, the training mainly consists of taking poses and hardly includes on-site training of pressing the lever to eject the fire extinguishing agent from the tip nozzle of the hose body. Even if training is carried out to eject the fire extinguishing agent of a general fire extinguisher, there is no guarantee that non-routine operations can always be properly performed in an emergency situation at the actual fire scene.

[0011] Unlike the instruction manuals for general household items, for products (tools) that are only used in emergencies, which are used only in emergencies, not only can the handling operations be improved through on-site training, but there is also room for technical improvement in the tools themselves. Conventional fire extinguishers have been widely spread and installed across the country, with a large number of about 4.2 million. For existing fire extinguishers, there is a situation where inspections are regularly carried out, for example, every six months after purchase. However, in many of these regular inspections, the reality is that training up to the process of holding the hose body by hand and operating the operating lever to inject high-pressure gas has not been carried out.

[0012] An object of the present invention is to provide a fire extinguisher hose and a fire extinguisher that enable a fire extinguisher that is not familiar to use safely and easily in an emergency when a fire breaks out.

Means for Solving the Problems

[0013] The fire extinguisher hose of the present invention is a fire extinguisher hose that can connect a main body container for enclosing high-pressure gas for fire extinguishing and a nozzle for ejecting high-pressure gas, and has a passage for the high-pressure gas to flow through. It has a hose body (11) that has a passage (27) through which high-pressure gas can flow and has bendable flexibility. Guides (12, 52, 54, 55, 56, 57) for mechanically guiding the hose body. It is provided with a spring (12, 52) that has a restoring force in a direction to keep the hose body in a straight shape and has bendable flexibility. One end (121, 531) of the spring can be fixed to the main body container (2). The other end (122, 532) of the spring can be held in a free state in the axial direction with respect to the tip-side fitting (14) that can fix the nozzle and the hose body. and The spring guides from the end (the other end) corresponding to the tip of the hose body to the base of the hose body Adopt the configuration.

[0014] According to the fire extinguisher hose of the present invention, it can be easily attached or replaced to the main body outlet of the fire extinguisher, instead of the hose that can be attached to the main body outlet of an existing general fire extinguisher or a general fire extinguisher before sale.

[0015] According to the fire extinguisher hose of the present invention, by applying it to the main body outlet of an existing fire extinguisher, and attaching or replacing the fire extinguisher, since the fire extinguisher is installed inside and outside houses, factories and other buildings, the probability of avoiding incomplete operations that are likely to occur during a fire can be increased. Therefore, when using a fire extinguisher, the occurrence rate of the hose flailing that has occurred for many years can be significantly reduced.

[0016] Thereby, the disaster risk during the fire extinguishing activity at the initial stage of fire extinguishing and the pollution risk due to incorrect operation can be reduced, and the effect of assisting the true fire extinguishing activity, especially the initial fire extinguishing activity, can be significantly improved. During a fire, since people who encounter the fire are often not in a psychological state where they can necessarily perform non - daily actions properly, it is possible to let go of the hose nozzle.

[0017] According to the fire extinguisher hose and the fire extinguisher of the present invention, even if such a situation occurs, the shape of the hose body of the fire extinguisher is kept straight by the inherent return and restoration movement of the spring that regulates the shape of the hose body of the fire extinguisher. Since the hose body returns to a straight - extending shape and maintains straight - advancing property, the hose body does not flail freely in three - dimensional space. Therefore, the fire extinguishing agent emitted from the nozzle is basically ejected in one direction of the straight - advancing direction, and the operator can also easily adjust the direction of the nozzle to a desired direction by manual operation. Therefore, it can be properly operated without the hose flailing towards the location of the fire, and it can prevent the fire extinguishing agent, etc. from scattering around. Thereby, even in an emergency, during the fire extinguishing activity at the location of the fire, the direction of the nozzle can be properly handled without the hose body flailing. Thereby, the success rate of initial fire extinguishing can be significantly improved.

Brief Description of the Drawings

[0018]

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Modes for Carrying Out the Invention

[0019] Hereinafter, the fire extinguisher hose according to the embodiment of the present invention will be described with reference to the drawings. In a plurality of embodiments, substantially the same component parts are denoted by the same reference numerals, and the description thereof will be omitted.

[0020] (First Embodiment) The first embodiment of the present invention will be described with reference to FIGS. 1 to 7. FIG. 1 shows an example of a fire extinguisher to which the fire extinguisher hose according to the first embodiment of the present invention is applied.

[0021] (Configuration of Fire Extinguisher) FIG. 1 shows an example of a fire extinguisher. The fire extinguisher used in the first embodiment has a basic configuration of a conventional general fire extinguisher, and the pressure vessel for enclosing the fire extinguishing agent and the high-pressure gas is a cylindrical heavy object, which is a tool for extinguishing fire.

[0022] The fire extinguisher 1 has a main body container 2, a main body outlet 3, a safety plug 7 that blocks a passage (not shown) inside the main body outlet 3, a passage that communicates with the pressure chamber of the main body container 2, and a discharge port 15 that switches the passage to an open state when the safety plug 7 is pulled out, a fixed lever 5 and a movable lever 6 that interrupt the passage, an indicating pressure gauge 8 that detects the pressure in the passage on the inlet side of the fixed lever 5 and the movable lever 6, and a cap 4 that fixes the indicating pressure gauge 8 to the main body container 2.

[0023] As shown in FIG. 2, the fire extinguisher hose 10 is composed of a hose body 11 made of a flexible tubular flexible material and a compression coil spring 12 inserted around the outer periphery thereof when the fire extinguisher is assembled. In the free state, the compression coil spring 12 has straightness along the central axis that becomes linear. In the free state, the compression coil spring 12 has a shape that extends straight in the axial direction. When an axial compression force is applied to the compression coil spring 12 in the free state, it can be compressed according to the magnitude of the axial force, and when the compression force is released, it returns to the original axial length.

[0024] Here, the compression coil spring 12 bends also in a shear direction perpendicular to the axial direction, and can be three-dimensionally bent and deformed according to the direction and magnitude of an external force when an external force including an axial force and a shear force acts, and returns to its original straight shape when the action of the external force is released. When the external force is released after the compression coil spring 12 is bent and deformed, it restores to its original straight and extended shape. When repeated external forces are repeatedly added and released, the bending deformation and the straight shape are repeated.

[0025] When assembling the fire extinguisher hose of the present embodiment to the fire extinguisher body, the hose body 11 is inserted into the internal space 23 of the compression coil spring 12. In the claims, the guide (12, 52) for mechanically guiding the hose body corresponds to the inner wall 123 extending spirally on the internal space 23 side of the compression coil spring 12 extending in a long shape in the present embodiment. The compression coil spring 12 in a free state has a gap a in a radially outward direction from the outer wall 110 with respect to the outer diameter φ of the hose body 11. In the free state, the hose body 11 guided by the compression coil spring 12 extending straight maintains a straight shape inside the compression coil spring 12.

[0026] When assembling the fire extinguisher hose, the attachment parts at both ends are as follows. On the fire extinguisher body attachment side of the fire extinguisher hose 10, as shown in FIG. 3, the body-side fastener 17 is screwed to the thread of the body outlet 3, and one end 18 of the hose body 11 is inserted into the outer wall of the small-diameter cylinder 22 of the body-side fastener 17. One end 111 of the hose body 11 is caulked and fixed to the body-side fitting 16 on the outer wall of the cylindrical small-diameter cylinder 20. One end 121 on the body outlet 3 side of the compression coil spring 12 is fastened and fixed to the outer wall of the body-side fastener 17. Thereby, one end 121 of the compression coil spring 12 is fixed to the body-side fastener 17.

[0027] As shown in Fig. 4, on the nozzle attachment side of the fire extinguisher hose 10, the other end 19 of the hose body 11 is inserted into the outer wall of the small-diameter cylinder 20 formed on the opposite side of the ejection hole 21 of the nozzle 13. The other end 19 of the hose body 11 is caulked and fixed by the nozzle-side fitting 14. Thus, one end 122 of the compression coil spring 12 guides the other end 19 of the hose body 11 and maintains its free state. Between the fire extinguisher body and the nozzle of the fire extinguisher hose 10, the hose body 11 is guided by a compression coil spring 12 corresponding to a guide. Since one end 121 of the compression coil spring 12 is a fixed end and the other end 122 is a free end, it is configured to allow axial displacement of the hose body 11 and the compression coil spring 12.

[0028] When the nozzle 13 is locked to the locking portion 30, as shown in Fig. 1, the hose body 11 bends and flexes, and the nozzle 13 connected to the hose body 11 is locked to the locking portion 30. At this time, the compression coil spring 12 that guides the hose body 11 bends and flexes following the bending and flexing of the hose body 11 while maintaining a restoring force that tries to extend straight. When the locking of the nozzle 13 to the locking portion 30 is released, as shown in Fig. 5, the compression coil spring 12 returns in the direction of arrow 24 by the restoring force and extends straight, and the hose body 11 mechanically guided by the compression coil spring 12 also extends straight, and the hose body 11 extends in the axial direction of the main body outlet 3 in a natural state.

[0029] (Function) According to the present invention, for an existing fire extinguisher, the existing hose can be easily replaced or attached with the fire extinguisher hose of the present embodiment. When assembling or manufacturing the fire extinguisher, the fire extinguisher hose of the present embodiment can be used instead of the conventional hose. The method of using a fire extinguisher using the fire extinguisher hose of the present embodiment will be described.

[0030] First, carry the fire extinguisher to the fire scene. Place Fire Extinguisher 1 near the fire scene. As shown in FIG. 6, pull out the safety plug 7 in the direction of arrow 25 with respect to the cap 4. Next, remove the nozzle 13 at the tip of the hose from the locking portion 30 fixed to the side surface of the main body container 2. When the nozzle 13 is removed from the locking portion 30, the compression coil spring 12 returns to its straight shape in the free state due to the restoring force. Along with the shape change of the compression coil spring 12 due to the restoring force, the shape of the hose body 11 follows, and the hose body 11 is deformed into a straight shape extending straight. At this time, the fire extinguisher hose 10 extends straight axially with respect to the main body outlet 3 in the direction of arrow 24 shown in FIG. 5.

[0031] Next, when the operator grips the fixed lever 5 and the movable lever 6, the high-pressure gas and the fire extinguishing agent inside the main body container 2 are ejected from the nozzle 13 through the passage 27 of the main body outlet 3 and the hose body 11. At this time, although the hose body 11 tends to violently shake due to the pressure fluctuation in the passage 27, however, the compression coil spring 12 extending in the axial center line direction around the hose body 11 maintains straightness due to the restoring force, restricts the shaking of the hose body 11, and attempts to keep the shape of the hose body straight. As a result, since the compression coil spring 12 restricts the shape change of the hose body, the shape of the hose body 11 is kept straight, and the straightness of the ejection direction of the fire extinguishing agent ejected from the nozzle 13 is ensured.

[0032] (Comparison with the comparative example) <Comparative Example 1> Here, a general fire extinguisher (conventional fire extinguisher) will be referred to as a comparative fire extinguisher. In the comparative fire extinguisher, the connection between the fire extinguisher body and the nozzle is only the hose body.

[0033] When using a comparison fire extinguisher, when fire extinguishing powder, water, gas, etc. are ejected together with the high-pressure gas in the fire extinguisher body and the powder, water, gas, etc. are ejected from the nozzle at the tip of the hose, if the nozzle is not properly held at that time, the hose will swing away from the hand, and once the hose body starts to swing, the hose body and the nozzle will thrash around, not only hindering the original fire extinguishing activity, but also causing the fire extinguishing agent ejected from the nozzle at the tip of the hose to scatter around, not only contaminating the floor, equipment, building, etc., but also falling on the operator's body, resulting in great losses.

[0034] During the initial operation of the comparison fire extinguisher, if the hands are released from the hose body and the nozzle due to misoperation or careless operation, the hose body will swing violently (thrash around), and the fire extinguishing agent ejected from the nozzle will scatter in an unintended direction. Once the hose body starts to thrash, it is not easy to stop the thrashing of the hose body. The instruction manual for the comparison fire extinguisher states, "Absolutely do not conduct a test discharge." Therefore, due to the description prohibiting the test discharge, in the place where such a comparison fire extinguisher is deployed, the operator usually has the problem of unfamiliarity with the hose body of the fire extinguisher (background).

[0035] As shown in FIG. 8, the comparison fire extinguisher 40 usually places the bottom surface of the fire extinguisher body 41 on the floor surface and holds the fixed lever 5 and the movable lever 6 with the fire extinguisher body 41 in a vertical position. If one hand holds both levers and the other hand does not hold the hose body 11 during operation, the hose body 11 will thrash due to the momentum of the high-pressure gas flowing inside the hose body 11. Once the hose body 11 starts to thrash, it is not easy to stop the operation of the thrashing hose body 11.

[0036] <Comparative Example 2> As shown in FIG. 9, when the fire extinguisher body 41 is held in a vertical position and the fixed lever 5 and the movable lever 6 are held, and the fire extinguisher body 41 is used in a state of being lifted from the floor surface, if it is lifted with both hands, the hose body 11 and the nozzle 13 at the tip of the hose will be released, and the hose body 11 will thrash and cannot be stopped once it starts to thrash.

[0037] Similar to Comparative Example 1, the instruction manual states, "Never conduct a test discharge of a general fire extinguisher." Therefore, since a test discharge is not possible, it is normal for the operator to be inexperienced in operating the fire extinguisher, and there is a risk that the hose will flail around, which can lead to irreparable damage and is thus an issue.

[0038] Although there was an actual situation of conducting fire extinguishing training, in many cases of comparative fire extinguishers, the actual fire extinguishing training involving actual operation had not been carried out. Even if there was training, despite the significant losses caused by the above-mentioned incorrect operations or accidental operations during that time, which led to the nozzle body flailing around, no technical solutions for fire extinguishers had been proposed for many years as a countermeasure.

[0039] For many years, this issue has been left unresolved without presenting an effective solution. The losses caused by the inability to effectively use the fire extinguisher as a result are immeasurably large.

[0040] According to this embodiment, in an emergency, technical ingenuity has been made to easily and surely inject the fire extinguishing agent in the injection direction for unfamiliar operations, which leads to effective disaster reduction. By adopting this device, social losses, economic losses, and psychological damage can be significantly reduced.

[0041] (Second Embodiment) The second embodiment of the present invention is to commercially sell a fire extinguisher to which the above-mentioned fire extinguisher hose is applied. Commercially sell a fire extinguisher 1 that is initially equipped with the fire extinguisher hose 10 of the first embodiment as standard equipment.

[0042] According to this embodiment, by installing the fire extinguisher 1 inside and outside buildings such as houses and factories after purchasing the fire extinguisher, in an emergency, when the locking of the nozzle 13 and the safety plug 7 are released and the lever is operated, after the high-pressure gas passes through the main body outlet 3 from the main body container 3, pressure fluctuations occur in the passage 27. However, since the fire extinguisher hose 10 maintains a straight extended shape and restricts shape changes, the swaying motion of the hose main body 11 beyond the main body mounting bracket 16 is suppressed. When the lever operation is performed with both hands, even if the gripping operation of the hand is released from the hose main body 11, the situation where the fire extinguishing agent scatters from the nozzle 13 to the surroundings can be avoided. After the start of injection, the fire extinguishing agent can be injected in an appropriate direction desired by the operator at the fire scene by manually operating the hose main body 11 and the nozzle 13.

[0043] According to this embodiment, even if there is an unfamiliar operation by the operator, the swaying of the hose main body 11 during high-pressure injection can be suppressed, and the fire extinguishing agent can be reliably injected in the injection direction. Through the technical ingenuity of this embodiment, it leads to effective disaster reduction, and by adopting this device, social losses, economic losses, and psychological damages can be significantly reduced.

[0044] (Third Embodiment) The third embodiment is a fire extinguisher hose that employs a leaf spring instead of the coil spring of the first embodiment. The third embodiment is shown in FIGS. 10 to 12.

[0045] FIG. 10 shows the hose main body and accessories of the fire extinguisher hose, FIG. 11 shows the leaf spring of the fire extinguisher hose, and FIG. 12 shows a fire extinguisher to which the fire extinguisher hose of the third embodiment is applied.

[0046] As shown in FIG. 12, the fire extinguisher 1 to which the fire extinguisher hose of the third embodiment is applied shows a state where the nozzle 13 is released from the locking portion 30. The fire extinguisher hose 50 includes the hose main body 11 and accessories shown in FIG. 10, and the leaf spring 52 shown in FIG. 11. The hose body 11 of the fire extinguisher hose 50 has the small-diameter cylinder 22 of the body-side fastener 17 inserted into one end, and the body-side fitting 16 caulks and fixes the one end of the hose body 11 and the small-diameter cylinder 22 from the outside. This configuration is the same as that of the first embodiment except for the coil spring of the first embodiment.

[0047] The hose body 11 of the fire extinguisher hose 50 has the small-diameter cylinder 20 of the nozzle 13 inserted into the other end, and the nozzle-side fitting 14 caulks and fixes the other end of the hose body 11 and the small-diameter cylinder 20 from the outside. The leaf spring 52 for maintaining the shape of the hose body 11 is a long, thin leaf spring and has a length in the longitudinal direction approximately the same as the length of the hose body 11. The leaf spring 52 has a thin plate spring body 53, an L-shaped bent portion 531 formed at one end of the plate spring body 53, and a U-shaped bent portion 532 formed at the other end.

[0048] The plate spring body 53 of the leaf spring 52 attached along the direction extending along the outer wall of the hose body 11 supports the hose body 11 in the longitudinal direction on the plate surface. One end of the plate spring body 53 has the bent portion 531 locked to the body outlet 3. The body-side fastener 17 axially aligns and fixes the plate spring body 53 and the hose body 11 to the body outlet 3. The guides 54, 55 fixed to the plate spring body 53 insert and guide the hose body 11 inside.

[0049] In the claims, the guide for mechanically guiding the hose body corresponds here to the leaf spring 52 and the guides 54, 55, 56, 57 fixed to the plate spring body 53. The guides 54, 55, 56, 57 are annular members that insert and guide the hose body 11 in the axial direction and allow axial displacement. The other end of the plate spring body 53 has the guide 56 surrounding the outer periphery of the hose body 11 from the outside of the plate spring body 53 to guide the hose body 11. The bent portion 532 at the other end of the leaf spring 52 is looped between the inside of the guide 56 and the outer wall of the hose body 11 and is locked to the guide 56 on the outer wall side of the hose body 11. Thereby, even if displacement occurs in the longitudinal length of the hose body 11 and the leaf spring 52 due to bending, the state of the leaf spring 52 supporting the hose body 11 is maintained.

[0050] In the normal state (when not in use) of the fire extinguisher 1, the nozzle 13 is locked to the locking portion 30 of the main body container 2. In the normal state (when locked), when the nozzle 13 is released from the locking portion 30, as shown in FIG. 12, it rises by the restoring force of the leaf spring 52, and the nozzle 13 rises to the shape shown in FIG. 12 by the restoring force of the leaf spring 52 that is more difficult to bend than the hose body 11 that is easy to bend. At this time, although the shape of the fire extinguisher hose 50 changes, since both ends of the leaf spring 52 have bent portions 531 and 532, it does not fall off from 54, 55, 56, and 57. Thereby, it is possible to prevent the leaf spring 52 from falling off the hose body 11.

[0051] When using the fire extinguisher, when the safety plug is released and the fixed lever 5 and the movable lever 6 are grasped and operated, high-pressure gas and fire extinguishing agent try to flow out from the main body outlet 3 of the container body 2. At this time, high-pressure pressure fluctuations occur in the passage inside the hose body 11, and the hose body 11 tries to flail. However, the shape of the hose body 11 is restricted to the shape along the leaf spring 52 by the restoring force of the leaf spring 52 attached to the hose body 11. Therefore, similar to the fire extinguisher of the second embodiment, the hose body 11 is suppressed from flailing, and the success rate of initial fire extinguishing can be significantly increased. Thereby, social losses, economic losses, and psychological damage can be greatly reduced.

[0052] (Fourth Embodiment) The fourth embodiment is a fire extinguisher equipped with a shoulder strap on the main body container of the fire extinguisher. This fourth embodiment improves the operability of the fire extinguisher using the fire extinguisher hose of the first embodiment. FIG. 13 shows the fire extinguisher of the fourth embodiment. FIGS. 14 to 17 show the accessories of the shoulder strap configuration of the fourth embodiment. FIG. 18 shows the usage state of the fourth embodiment.

[0053] The fire extinguisher 1 has a shoulder strap 60 provided on the main body container 2. The shoulder strap 60 includes a clip 61 attached to the main body container 2, a belt body 66, and a mounting fitting 62 for attaching the clip 61 and the belt body 66. The clip 61 has the shape shown in Fig. 14 and is an elastic body made of a wire material, and the opening 611 can be opened and closed. The clip 61 can be fitted to the bottom of the cap 4 of the container main body 2 shown in Fig. 13. When fitting, the opening 611 of the clip 61 is opened, and the clip 61 is fitted to the thin part at the lower part of the cap 4.

[0054] As shown in Fig. 17A, the belt body 66 forms loop ends 67 at both ends, and the fastener 63 of the mounting fitting 62 is hooked to this loop as shown in Fig. 17B. The mounting fitting 62 has a locking portion 64 connected to the fastener 63 as shown in Figs. 16A and 16B, and a leaf spring 65 is rotatably attached to the locking portion 64. When the leaf spring 65 is pushed from the state shown in Fig. 16A, a gap shown in Fig. 16B can be formed in the locking portion 64. When the clip 61 is passed through this gap, a loop of the belt body 66 can be formed via the mounting fitting 62 as shown in Fig. 15.

[0055] The fire extinguisher 1 in the state shown in Fig. 13 is in a state where the clip 61 is fitted in the vicinity of the cap 4 of the main body container 2. The belt body 66 is temporarily fixed compactly in a folded state on the side surface of the main body container 2 by a magic tape (registered trademark) 68. When using the fire extinguisher 1, when the adhesion state of the magic tape 68 is switched to the released state, the belt body 66 can be worn as shown in Fig. 18.

[0056] By holding the fixing lever 5 and the movable part 6 of the fire extinguisher 1 in the worn state with one hand and gripping the hose 10 near the nozzle 13 with the other hand, the injection direction of the nozzle 13 can be adjusted, and the injection of the fire extinguishing agent from the nozzle 13 can be started. Since it is slung over the operator's body, the fire extinguisher 1 can be carried integrally with the body. When carrying it slung over the shoulder, one hand can hold the fixing lever 5 and the movable lever 6, and the other hand can grip the hose body 11 near the nozzle 13. Therefore, when starting to spray the fire extinguishing agent, the hose can be prevented from flailing, the operability is improved, and the success rate of initial fire extinguishing can be further increased.

[0057] According to the fourth embodiment, when a fire breaks out and an emergency occurs, the main body container 2, which is a heavy object, is slung over the shoulder. When operating the fire extinguisher 1, the removal of the safety plug 7, the gripping and holding of the fixing lever 5 and the movable lever 6, and the alignment of the nozzle 13 can all be done with both hands. Therefore, the fire extinguisher 1 can be moved to the fire scene integrally with the body.

[0058] Generally, when women or children handle a fire extinguisher, which is a heavy object, the operation is not easy. And when a fire breaks out, it is never easy to operate properly in a psychologically pressured situation. In such a situation, it is an issue to make the operation as simple as possible, and it is an issue that should be avoided as much as possible that the hose body flails around when an emergency occurs. Under the background that these issues have continued to exist for a long time, and also under the background that these issues remain unresolved, it is of extremely great technical significance to propose the present invention. The present invention provides a technique for significantly increasing the probability of performing initial fire extinguishing when a fire breaks out.

[0059] According to the fourth embodiment, when the fire extinguisher 1 is slung over the shoulder and after the conveyance to the fire scene is completed, when an operation of removing the nozzle 13 from the locking portion 30 on the side surface of the main body container 2 is performed during the operation of the fire extinguisher 1, the restoring force of the fire extinguisher hose 10 straightens the hose body 11 straight in the direction of the main body outlet 3. Therefore, without the hose body 11 flailing, the direction and injection force of the fire extinguishing agent ejected from the nozzle 13 can be appropriately ensured. As a result, the scattered of the ejected fire extinguishing agent around can be prevented, so that the loss of the fire extinguishing agent during operation and the loss of post-treatment can be significantly reduced.

[0060] (Other embodiments) In the above-described embodiments, an example of the spring used is a compression coil spring. However, in the present invention, the spring used for the component may be a compression coil spring or a tension coil spring. The inventor has confirmed in experiments that when a tension coil spring is used instead of a compression coil spring, the same effect as that of the compression coil spring can be obtained.

[0061] In the case of a coil spring, the spring core material has a helical shape of a wire. In the case of a tension coil spring, The nozzle side is made free and cantilever-supported, and one end of the tension coil spring on the container body side is fixed to the body outlet by a body-side fitting or a body-side clamp. The other end of the hose body is fixed to the nozzle by a nozzle-side fitting. In the present invention, instead of a coil spring, other spring members such as leaf springs may be used. The spring of the present invention may be a spring member having a material, shape, and material properties with a restoring force so as to ensure straightness. The expression "straight" described in this specification does not necessarily mean exactly straight, but includes a shape with a slight bend.

[0062] The present invention can also be a fire extinguisher to which a fire extinguisher hose using the leaf spring of the third embodiment is applied. Further, it goes without saying that the present invention may apply a shoulder strap to a fire extinguisher to which a fire extinguisher hose using the leaf spring of the third embodiment is applied. The accessories used for the shoulder strap are not limited to the clips and mounting fittings shown above, and it goes without saying that the belt may be attached to the container body by other configurations. One end of the fire extinguisher hose of the present invention on the container body side of the spring may be fixed to one end of the hose body, the other end of the spring on the nozzle side may be in a free state with respect to the hose body, or may be fixed to the other end of the hose body.

[0063] The configuration of the fire extinguisher to which the hose for a fire extinguisher of the present invention is applied is not limited to the configuration of the fire extinguisher described above. The form of the fire extinguisher is not limited to the above, and the present invention can be applied to any hose body as long as it is a fire extinguisher using a hose body that can be bent and deformed. In the hose for a fire extinguisher of the present invention, the guide may be a member extending in the axial direction of the hose body.

[0064] In the hose for a fire extinguisher of the present invention, the guide may be an annular member attached to the spring. In the hose for a fire extinguisher of the present invention, the spring is a coil spring (12), the guide is the spiral coil spring that partially partitions an internal space (23) extending in the axial direction of the coil spring, and the hose body may be insertable into the internal space.

[0065] In the hose for a fire extinguisher of the present invention, the spring is a leaf spring (52), and may be axially attached to the outer wall of the hose body. In the hose for a fire extinguisher of the present invention, the spring is a leaf spring (52), and the guide may be one or more guides (54, 55, 56, 57) that bundle the leaf spring axially attached to the hose body and the hose body.

[0066] The fire extinguisher of the present invention includes a fire extinguisher body (2) that encloses high-pressure gas, an operation lever (5, 6) that enables the high-pressure gas inside the fire extinguisher body to be ejected to the outside, a nozzle (13) capable of ejecting the high-pressure gas, and a hose for a fire extinguisher (10, 50) according to any one of claims 1 to 6, wherein one end of the hose body is attached to the fire extinguisher body and the other end of the hose body is attached to the nozzle.

[0067] As described above, the present invention is not limited to the above-described embodiments, and can be implemented in various forms without departing from the gist thereof.

Description of Symbols

[0068] 1 Fire extinguisher, 2 Main body container, 3 Main body outlet, 5 Fixed lever (operating lever), 6 Movable lever (operating lever), 10, 50 Fire extinguisher hoses, 11 Hose body, 12 Compression coil spring (coil spring, spring, guide), 13 Nozzle, 14 Nozzle side fitting, 16 Main body side fitting, 17 Main body side fastener, 52 Leaf spring (guide), 53 Leaf spring body, 54, 55, 56, 57 Guide (guide), 121 One end of the spring, 122 The other end of the spring, 531, 532 Bending part (one end of the spring, the other end of the spring).

Claims

1. A fire extinguisher hose that can connect a main body container enclosing high-pressure gas for fire extinguishing and a nozzle for ejecting the high-pressure gas, and has a passage through which the high-pressure gas flows, having a passage (27) through which high-pressure gas can flow, and a hose body (11) having bendable flexibility, guides (12, 52, 54, 55, 56, 57) for mechanically guiding the hose body, and a spring (12, 52) having a restoring force in a direction to keep the hose body in a straight shape and having bendable flexibility, one end (121, 531) of the spring being fixable to the main body container (2), the other end (122, 532) of the spring being axially free with respect to a tip-side fitting (14) capable of fixing the nozzle and the hose body, wherein the spring guides the fire extinguisher hose from the end corresponding to the tip of the hose body to the base of the hose body.

2. The fire extinguisher hose according to claim 1, wherein the other end of the spring extends to the nozzle side beyond the hose-side end (20) of the nozzle (13).

3. The fire extinguisher hose according to claim 1, wherein the guide is a member extending in the axial direction of the hose body.

4. The fire extinguisher hose according to claim 1, wherein the guide is an annular member attached to the spring.

5. The spring is a coil spring (12), the guide is the helical coil spring that partially partitions an internal space (23) extending in the axial direction of the coil spring, and the hose body can be inserted into the internal space. The fire extinguisher hose according to claim 1.

6. The spring is a leaf spring (52), and the fire extinguisher hose according to claim 1, which is axially attached to the outer wall of the hose body.

7. The spring is a leaf spring (52), and the guide is one or more guides (54, 55, 56, 57) that bundle the leaf spring axially attached to the hose body and the hose body. The fire extinguisher hose according to claim 1.

8. A fire extinguisher main body (2) enclosing high-pressure gas, an operation lever (5, 6) for enabling the high-pressure gas in the fire extinguisher main body to be ejected to the outside, a nozzle (13) for ejecting the high-pressure gas, and a fire extinguisher hose (10, 50) according to any one of claims 1 to 6, wherein one end of the hose body is attached to the fire extinguisher main body and the other end of the hose body is attached to the nozzle.

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