Fire extinguisher

Abstract

The utility model provides a fire extinguisher relates to fire extinguisher technical field, including fire extinguisher jar, the fire extinguisher jar outer wall is close to the movable installation of connecting plate in the bottom position, the connecting plate one side bottom edge position is hinged with the swing of up and down swing arm, through setting swing arm and telescopic arm, utilize telescopic arm end's eye ring fixed fire extinguisher jar spray head, use only needs to draw out telescopic arm, then downwardly pushes swing arm, can realize telescopic arm drive eye ring and fire extinguisher jar spray head remove far from fire extinguisher jar jar body, utilize pin shaft to connect swing arm and swing arm to realize swing arm angle, position fixed, can realize fire extinguisher jar spray head position fixed, prevent because of reaction force and sway.

Description

Technical Field

[0001] This utility model relates to the field of fire extinguisher technology, and in particular to a fire extinguisher. Background Technology

[0002] Fire extinguishers are a common type of fire-fighting equipment used to extinguish initial fires. For example, the fire extinguisher with publication number CN221061576U allows firefighters to adjust the gooseneck tube to a suitable position and the nozzle to a suitable angle before opening the control valve to extinguish the fire. This avoids the possibility of firefighters being accidentally burned by flames while holding the gooseneck tube to extinguish the fire.

[0003] However, when the extinguishing agent is sprayed from the fire extinguisher nozzle, according to Newton's third law, the spraying of the extinguishing agent will generate a reaction force in the opposite direction of the spray. If the person does not hold the nozzle, the reaction force will cause the nozzle to lose balance, thus causing it to swing and affecting the fire extinguishing effect. Utility Model Content

[0004] The purpose of this utility model is to solve the problems existing in the prior art by proposing a fire extinguisher.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a fire extinguisher, comprising a fire extinguisher canister, a connecting plate movably installed on the outer wall of the fire extinguisher canister near the bottom, a swing arm hinged to the bottom edge of one side of the connecting plate, a telescopic arm inserted into the swing end of the swing arm, a collar hinged to the end of the telescopic arm away from the swing arm for fixing the nozzle of the fire extinguisher canister, a pin inserted into one side of the swing arm near the swing end, the surface of the telescopic arm being hollowed out and the hollowed-out part of the telescopic arm being inserted into the pin, a swing rod hinged to one side of the connecting plate near the top edge, the swing end of the swing rod overlapping the surface of the swing arm and the overlapping part being inserted into the pin.

[0006] Preferably, both ends of one side of the telescopic arm are rotatably connected to sprockets, one of which is coaxially distributed with the rotation point of the collar and is fixedly installed. One side of the swing arm is open and the opening is inserted into the surface of another sprocket. A chain meshes between the two sprockets.

[0007] Preferably, the central shaft of the other sprocket is hollow, and a hollow disc that passes through the central shaft of the other sprocket is fixedly installed on one side of the telescopic arm.

[0008] Preferably, the hollowed-out disc is clearance-fitted with the inner wall of another sprocket, and the edge of the end face of the other sprocket is connected to the hollowed-out area on the surface of the hollowed-out disc by a pin.

[0009] Preferably, the bottom edge of the connecting plate is provided with a plurality of anti-slip bars arranged in a circular array about the central axis of the fire extinguisher tank, and a hinge arm is provided between the same side end faces of two adjacent anti-slip bars.

[0010] Preferably, the hinged arm includes two internally threaded cylinders, each internally threaded with a threaded rod, and the two internally threaded cylinders are hinged to a connecting seat at their relatively closed ends. The hinge of the internally threaded cylinder extends outward through the connecting seat and is fixedly mounted with a gear. A spring rod is fixedly mounted on the surface of the connecting seat, and a rack for meshing with two gears on the same connecting seat is fixedly mounted on the telescopic end of the spring rod.

[0011] Preferably, the two threaded rods in the same hinge arm are threadedly connected at their opposite ends to a bearing sleeved on the end of the anti-slip rod, and the anti-slip rod is provided with a strap for binding the surface of the fire extinguisher canister.

[0012] Compared with the prior art, the advantages and positive effects of this utility model are as follows: 1. In this utility model, by setting up a swing arm and a telescopic arm, the fire extinguisher nozzle is fixed by the collar at the end of the telescopic arm. When in use, simply pull out the telescopic arm and then push the swing arm downward to move the telescopic arm, the collar, and the fire extinguisher nozzle away from the fire extinguisher body. The swing arm is fixed in angle and position by connecting the swing rod and the swing arm with a pin, thus fixing the position of the fire extinguisher nozzle and preventing it from shaking due to reaction force. In actual use, personnel only need to hold the fire extinguisher body, which can prevent personnel from getting close to the fire source.

[0013] 2. In this utility model, by rotating the sprocket close to the swing arm, the sprocket at the end of the telescopic arm drives the collar to swing up and down under the meshing action of the chain. This allows the fire extinguisher canister nozzle connected to the collar to swing up and down to adjust the angle of the extinguishing agent spray. Moreover, when adjusting the nozzle angle, personnel do not need to approach the nozzle, ensuring personnel safety. Attached Figure Description

[0014] Figure 1 This utility model provides a three-dimensional structural diagram of a fire extinguisher; Figure 2 This utility model provides a structural schematic diagram of a fire extinguisher swing arm; Figure 3 This utility model provides a structural schematic diagram of an anti-slip rod for a fire extinguisher; Figure 4 This utility model provides a structural schematic diagram of a fire extinguisher with a hollowed-out disc.

[0015] Legend: 1. Fire extinguisher canister; 2. Swing arm; 3. Telescopic arm; 4. Swing rod; 5. Connecting plate; 6. Collar; 7. Anti-slip rod; 8. Strap; 9. Sprocket; 10. Pin; 11. Threaded rod; 12. Internally threaded cylinder; 13. Gear; 14. Rack; 15. Spring rod; 16. Hollowed-out disc; 17. Connecting seat; 18. Bearing. Detailed Implementation

[0016] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0017] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein, and therefore the present invention is not limited to the specific embodiments disclosed in the following specification.

[0018] like Figures 1-4 As shown, a fire extinguisher includes a fire extinguisher canister 1. A connecting plate 5 is movably installed on the outer wall of the fire extinguisher canister 1 near the bottom. A swing arm 2 that can swing up and down is hinged to the bottom edge of one side of the connecting plate 5. A telescopic arm 3 is inserted into the swing end of the swing arm 2. A collar 6 that can swing up and down and is used to fix the nozzle of the fire extinguisher canister 1 is hinged to the end of the telescopic arm 3 away from the swing arm 2. A pin 10 is inserted into one side of the swing arm 2 near the swing end. The surface of the telescopic arm 3 is hollowed out, and the hollowed-out part of the surface of the telescopic arm 3 is inserted into the pin 10. A swing rod 4 that can swing up and down is hinged to one side of the connecting plate 5 near the top edge. The swing end of the swing rod 4 overlaps the surface of the swing arm 2, and the overlap is also inserted into the pin 10. The device is in a retractable state. In its normal state, the telescopic arm 3 is housed within the swing arm 2, which is vertically positioned against the surface of the fire extinguisher canister 1. In use, the telescopic arm 3 is pulled upwards, and a pin 10 passes through the telescopic arm 3 and the swing arm 2. Then, the swing arm 2 is swung downwards, using the collar 6 at the end of the telescopic arm 3 to move the nozzle of the fire extinguisher canister 1 as far away from the canister 1 as possible. The swing arm 2 is fixed at its angle by another pin 10 passing through the swing rod 4 and the surface of the swing arm 2, thus fixing the position of the telescopic arm 3. Therefore, the relative position of the fire extinguisher canister 1 and the nozzle is fixed. Thus, in actual use, personnel only need to hold the fire extinguisher canister 1, preventing them from approaching the fire source.

[0019] To facilitate control of the fire extinguisher canister 1 nozzle's vertical swing at a fixed height: Sprockets 9 are rotatably connected to both ends of one side of the telescopic arm 3. One sprocket 9 is coaxially distributed with the rotation point of the collar 6 and is fixedly installed. One side of the swing arm 2 is open, with the opening inserted into the surface of the other sprocket 9. A chain meshes between the two sprockets 9. The central axis of the other sprocket 9 is hollow. A perforated disc 16 is fixedly installed on one side of the telescopic arm 3, passing through the central axis of the other sprocket 9. The perforated disc 16 is clearance-fitted with the inner wall of the other sprocket 9, and the edge of the end face of the other sprocket 9 is connected to the perforated area on the surface of the perforated disc 16 by a pin 10. In use, pull out the pin 10 connecting the perforated disc 16 and the sprocket 9. By rotating the sprocket 9 close to the swing arm 2, the sprocket 9 at the end of the telescopic arm 3 drives the collar 6 to swing up and down under the meshing action of the chain. This allows the nozzle of the fire extinguisher canister 1 connected to the collar 6 to swing up and down to adjust the angle of the extinguishing agent spray. When adjusting the nozzle angle, personnel do not need to approach the nozzle, ensuring personnel safety. By using the pin 10 to pass through the perforated parts at different positions on the surface of the perforated disc 16 and insert it into the surface of the sprocket 9, the position of the sprocket 9 can be fixed, thus preventing the chain from rotating. Therefore, the position of the sprocket 9 connected to the collar 6 can be fixed.

[0020] To facilitate installation on the surface of fire extinguisher canisters 1 of different shapes and sizes: The bottom edge of the connecting plate 5 is provided with several anti-slip rods 7 arranged in a circular array about the central axis of the fire extinguisher canister 1. Three anti-slip rods 7 are provided and vertically distributed on the surface of the fire extinguisher canister 1. The connecting plate 5 is fixed to the surface of the fire extinguisher canister 1 by using the anti-slip rods 7 to adhere to the surface. The relative positions of the three anti-slip rods 7 can be adjusted to easily fix the connecting plate 5 to the surface of fire extinguisher canisters 1 of different diameters. Specifically, a hinge arm is provided between the same-side end faces of two adjacent anti-slip rods 7. The hinge arm includes... Two internally threaded cylinders 12 are provided, each with a threaded rod 11 threadedly connected to it. A connecting seat 17 is hinged to the relatively closed ends of the two internally threaded cylinders 12. A gear 13 is fixedly installed at the hinge point of the internally threaded cylinder 12, extending outward through the connecting seat 17. A spring rod 15 is fixedly installed on the surface of the connecting seat 17. A rack 14 for meshing with the two gears 13 on the same connecting seat 17 is fixedly installed at the telescopic end of the spring rod 15. The angle of two adjacent anti-slip rods 7 can be adjusted by swinging the internally threaded cylinder 12 within the connecting seat 17. Before adjusting the angle of the internally threaded cylinder 12, [the following text is missing: "towards..."] The rack 14 is disengaged from the gear 13, ensuring that the gear 13 rotates smoothly with the corresponding internal threaded cylinder 12. After the angle of the internal threaded cylinder 12 in the connecting seat 17 is adjusted, the rack 14 is released. Under the elastic push of the spring rod 15, the rack 14 descends and re-engages with the two gears 13 on the connecting seat 17, thus preventing the gear 13 from rotating and fixing the angle of the internal threaded cylinder 12 in the connecting seat 17. The two threaded rods 11 in the same hinge arm are threaded to the opposite ends of a bearing 18 sleeved on the end of the anti-slip rod 7. 1. The outer ring of the bearing 18 is rotatably connected. Specifically, a nut is rotatably installed on the outer ring of the bearing 18. The nut is threaded to the end of the threaded rod 11 to connect the threaded rod 11 to the bearing 18. When the threaded rod 11 and the bearing 18 are combined, rotating the threaded rod 11 will rotate the nut on the bearing 18. The distance between the anti-slip rod 7 and the connecting seat 17 can be adjusted by threading the threaded rod 11 to the corresponding internal threaded cylinder 12. Therefore, it is convenient to adjust the distance between two adjacent anti-slip rods 7. The anti-slip rod 7 is provided with straps 8 for binding the surface of the fire extinguisher canister 1. Figure 1 and Figure 2 The anti-slip rods 7 at both ends are connected by straps 8 and pass through the outer wall of the fire extinguisher tank 1. By tightening the straps 8, the anti-slip rods 7 can be tightly attached to the surface of the fire extinguisher tank 1. The position of the anti-slip rods 7 is fixed by the friction between the anti-slip rods 7 and the surface of the fire extinguisher tank 1.

[0021] Working principle: By adjusting the distribution of several anti-slip rods 7 and using straps 8 to bind and fix several anti-slip rods 7 to the surface of the fire extinguisher canister 1, the nozzle of the fire extinguisher canister 1 is installed in the collar 6. When in use, the swing arm 2 is pulled down, and the swing rod 4 is connected to the swing arm 2 by the pin 10 to fix the angle of the swing arm 2. Then the telescopic arm 3 is pulled outward, and the telescopic arm 3 is connected to the swing arm 2 by an additional pin 10, so that the nozzle of the fire extinguisher canister 1 is away from the fire extinguisher canister 1 and keeps the position fixed. The person holds the fire extinguisher canister 1 and rotates the sprocket 9 on the telescopic arm 3 near the swing arm 2. Under the transmission of the chain, the sprocket 9 at the other end drives the collar 6 to swing up and down to adjust the spray angle.

[0022] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A fire extinguisher comprising a fire extinguisher can (1), characterized in that: A connecting plate (5) is movably installed on the outer wall of the fire extinguisher canister (1) near the bottom of the canister. A swing arm (2) that swings up and down is hinged to the bottom edge of one side of the connecting plate (5). A telescopic arm (3) is inserted into the swing end of the swing arm (2). A collar (6) that swings up and down and is used to fix the nozzle of the fire extinguisher canister (1) is hinged to the end of the telescopic arm (3) away from the swing arm (2). A pin (10) is inserted into one side of the swing arm (2) near the swing end. The surface of the telescopic arm (3) is hollowed out and the hollow part of the surface of the telescopic arm (3) is inserted into the pin (10). A swing rod (4) that swings up and down is hinged to one side of the connecting plate (5) near the top edge. The swing end of the swing rod (4) overlaps with the surface of the swing arm (2) and the overlap is also inserted into the pin (10).

2. The fire extinguisher of claim 1, wherein: Both ends of one side of the telescopic arm (3) are rotatably connected to sprockets (9). One of the sprockets (9) is coaxially distributed with the rotation point of the collar (6) and is fixedly installed. One side of the swing arm (2) is set in an open shape and the opening is inserted into the surface of another sprocket (9). A chain meshes between the two sprockets (9).

3. The fire extinguisher of claim 2, wherein: The other sprocket (9) is hollow at its central shaft, and a hollow disc (16) that passes through the central shaft of the other sprocket (9) is fixedly installed on one side of the telescopic arm (3).

4. The fire extinguisher of claim 3, wherein: The hollowed-out disc (16) is fitted with the inner wall of another sprocket (9) with a clearance, and the edge of the end face of the other sprocket (9) is connected to the hollowed-out part of the surface of the hollowed-out disc (16) by a pin (10).

5. The fire extinguisher according to claim 1, characterized in that: The bottom edge of the connecting plate (5) is provided with a number of anti-slip rods (7) arranged in a ring array about the central axis of the fire extinguisher tank (1), and a hinge arm is provided between the same side end face of two adjacent anti-slip rods (7).

6. The fire extinguisher of claim 5, wherein: The hinge arm includes two internal threaded cylinders (12), each internal threaded cylinder (12) is threaded with a threaded rod (11), and the two internal threaded cylinders (12) are hinged to each other at their closed ends with a connecting seat (17). The hinge of the internal threaded cylinder (12) extends outward through the connecting seat (17) and is fixedly mounted with a gear (13). A spring rod (15) is fixedly mounted on the surface of the connecting seat (17), and a rack (14) is fixedly mounted on the telescopic end of the spring rod (15) for meshing with the two gears (13) on the same connecting seat (17).

7. The fire extinguisher of claim 6, wherein: Two threaded rods (11) in the same hinge arm are threadedly connected at opposite ends to a bearing (18) sleeved on the end of the anti-slip rod (7), and the anti-slip rod (7) is provided with a strap (8) for binding the surface of the fire extinguisher canister (1).

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