Air switch with safety protection structure

Abstract

The utility model discloses an air switch with safety protection structure, including air switch box, movable guide, pivot, electromagnetic coil, link piece and switch handle, the input end is connected with intercommunicating piece no.

Description

Technical Field

[0001] This utility model relates to the field of air switch safety protection technology, specifically an air switch with a safety protection structure. Background Technology

[0002] An air switch is a type of switch that automatically disconnects when the current in a circuit exceeds the rated current. Air switches are common circuit protectors in homes. When using them, each circuit, including sockets, light fixtures, kitchen appliances, bathroom appliances, refrigerators, and air conditioners, should have its own dedicated circuit and an individual air switch. Chinese Patent No. CN202421732839.X discloses a smart air switch, which includes an air switch body. Support plates are fixedly connected to the top of both sides of the air switch body, and the top of the support plates is provided with a limit fixing structure. This smart air switch is equipped with a support plate, a pull plate, a limit slot, a limit block, a connecting plate, a reserved slot, and a connecting rod. Pulling the pull plate moves the limit block via the connecting rod. After the block moves, the protective plate is rotated to the top. Releasing the pull plate causes the spring to spring back the limit block into the limit slot via the connecting rod, thus fixing the protective plate in place. This prevents the protective plate from obstructing maintenance of the air switch body during repairs. It solves the problem of inconveniently fixing the protective plate according to user needs, which could affect its use.

[0003] Based on the above, the inventors have discovered the following problems: Although the above-mentioned device can conveniently limit the protective plate and thus effectively protect the main body of the air switch, it ignores the fact that in an emergency where a short circuit occurs, traditional air switches may sometimes fail to disconnect the circuit in time due to various complex factors, which can easily lead to electric sparks at the air switch. Once an electric spark is generated, it may further ignite the combustion at the air switch, thus creating a fire hazard and seriously threatening people's lives and property. Utility Model Content

[0004] To achieve the above objectives, this utility model provides the following technical solution: an air switch with a safety protection structure, comprising an air switch box, a movable guide, a rotating shaft, an electromagnetic coil, a connecting member, and a switch handle. The air switch box has an inner wall, with an input end at one end and an output end at the other. The input end is connected to a first connecting piece, and the output end is connected to a second connecting piece, which is connected to a copper wire. The electromagnetic coil is located inside the air switch box, and the copper wire passes through the electromagnetic coil and connects to one end of the movable guide. The other end of the movable guide is attached to the first connecting piece. The movable guide is movably connected to the inner wall of the air switch box via a rotating shaft, which is located in the middle of the movable guide. A connecting cylinder is fixedly provided on the inner wall, and the connecting cylinder has a protective component. The connecting member is movably connected to the side of the movable guide near the copper wire, and the connecting member is movably connected to the switch handle, which is rotatably connected to the air switch box.

[0005] Furthermore, the protective assembly includes a placement box, an opening, and a push plate; the air switch box has an opening on its side wall, and the placement box is fixedly connected to the outside of the opening, with compressed fire extinguishing agent filling the placement box; a sliding assembly is provided on the side of the opening facing the inner cavity of the air switch box, the sliding assembly is connected to a movable cover, and the movable cover is fixedly connected to the push plate; the push plate is connected to a limiting shaft, one end of which is movably inserted into a connecting cylinder; a spring is provided inside the connecting cylinder, one end of which is fixedly connected to the inner wall, and the other end is fixedly connected to the limiting shaft; the outer surface of the push plate is covered with a cotton cloth layer, and the cotton cloth layer is fixedly connected to the outer wall of the connecting cylinder.

[0006] Furthermore, the sliding assembly includes a pair of grooves formed in the opening; a pair of sliders are fixedly provided at the end of the movable cover facing the opening, and the sliders are slidably embedded in the grooves; a sealing layer is provided at the contact point between the movable cover and the opening.

[0007] Furthermore, the push plate, movable cover, slider, spring, connecting cylinder and limiting shaft move in the direction of the movable guide closer to the connecting piece one.

[0008] Furthermore, the placement box is provided with a fire extinguishing agent injection port.

[0009] Furthermore, the electromagnetic coil is provided with a movable push rod, one end of which is located inside the electromagnetic coil, and the other end of which is movably connected to the end of the movable guide away from the connecting piece.

[0010] Compared with the prior art, the beneficial effects of this utility model are: the air switch with a safety protection structure is reasonable and has the following advantages:

[0011] (1) Traditional air switches may cause the electromagnetic mechanism to age or the contacts to stick due to long-term use; by introducing a dual protection mechanism, even if the electromagnetic coil fails, the mechanical protection components can still ensure that the circuit is disconnected, avoiding the loss of protection function due to a single fault point, which can significantly reduce the risk of electrical fires and improve the overall safety of the power system. It is suitable for fields with strict reliability requirements. This dual protection mechanism not only makes up for the shortcomings of traditional design, but also achieves a higher level of safety protection through the synergistic effect of mechanical and electromagnetic, which has important engineering application value.

[0012] (2) Through the automatic release mechanism of compressed extinguishing agent, multi-level protection of air switches is achieved, significantly improving the safety and reliability of electrical equipment. When the movable cover moves with the push plate to open the opening, the compressed extinguishing agent enters the inner cavity of the switch box in a spray manner, directly covering the area of ​​electric spark or open flame, thereby effectively extinguishing the flame in a short time, preventing the further spread of the fire, and effectively reducing the risk of electrical fire. It is particularly suitable for high-load or complex power scenarios, providing a reliable guarantee for the safe operation of electrical equipment. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the internal cross-sectional structure of this utility model;

[0014] Figure 2 This is a side sectional view of the present invention.

[0015] Figure 3 This is an enlarged cross-sectional view of the protective component of this utility model;

[0016] Figure 4 This is an exploded view of the protective component of this utility model.

[0017] In the diagram: 1. Input end; 2. Connecting piece one; 3. Movable guide; 4. Output end; 5. Connecting piece two; 6. Electromagnetic coil; 7. Copper wire; 8. Switch handle; 9. Connecting piece; 10. Air switch box; 11. Connecting cylinder; 12. Push plate; 13. Rotating shaft; 14. Placement box; 15. Opening; 16. Inner wall; 17. Spring; 18. Cotton cloth layer; 19. Limiting shaft; 20. Movable cover; 21. Slide groove; 22. Slider. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Please see Figure 1-4 The present invention provides a technical solution as follows:

[0020] Example:

[0021] In this embodiment, an air switch with a safety protection structure includes an air switch box 10, a movable guide 3, a rotating shaft 13, an electromagnetic coil 6, a connector 9, and a switch handle 8. The air switch box 10 has an inner wall 16. One end of the inner cavity of the air switch box 10 has an input terminal 1, and the other end has an output terminal 4. The input terminal 1 is connected to a connecting piece 2, and the output terminal 4 is connected to a connecting piece 2. The connecting piece 25 is connected to a copper wire 7. The electromagnetic coil 6 is disposed inside the air switch box 10, and the copper wire 7 passes through... An electromagnetic coil 6 is connected to one end of a movable guide 3, and the other end of the movable guide 3 is attached to a connecting piece 2. The movable guide 3 is movably connected to the inner wall of the air switch box 10 via a rotating shaft 13, which is located in the middle of the movable guide 3. A connecting cylinder 11 is fixedly provided on the inner wall 16, and the connecting cylinder 11 is provided with a protective component. The side of the movable guide 3 near the copper wire 7 is movably connected to a connecting piece 9, and the connecting piece 9 is movably connected to a switch handle 8, which is rotatably connected inside the air switch box 10.

[0022] Both the input terminal 1 and the connecting piece 2 are connected to the energized wire, and the current flows sequentially from the input terminal 1, the connecting piece 2, the movable conductor 3, the copper wire 7, the connecting piece 2 5 to the output terminal 4.

[0023] The protective assembly includes a placement box 14, an opening 15, and a push plate 12. The air switch box 10 has an opening 15 on its side wall, and the placement box 14 is fixedly connected to the outside of the opening 15. The placement box 14 is filled with compressed fire extinguishing agent. A sliding assembly is provided on the side of the opening 15 facing the inner cavity of the air switch box 10. The sliding assembly is connected to a movable cover 20, and the movable cover 20 is fixedly connected to the push plate 12. The push plate 12 is connected to a limiting shaft 19, one end of which is movably inserted into a connecting cylinder 11. A spring 17 is provided inside the connecting cylinder 11, one end of which is fixedly connected to the inner wall 16, and the other end is fixedly connected to the limiting shaft 19. The outer surface of the push plate 12 is covered with a cotton cloth layer 18, which is fixedly connected to the outer wall of the connecting cylinder 11.

[0024] The aforementioned cotton cloth layer 18 is used to fix the push plate 12 to the connecting cylinder 11, and the spring 17 is in a compressed state between the limiting shaft 19 and the inner wall 16. When the cotton cloth layer 18 breaks, the spring 17 can push the limiting shaft 19 to move along the connecting cylinder 11 under its own elastic properties.

[0025] The sliding assembly includes a pair of grooves 21 formed on the opening 15; a pair of sliders 22 are fixedly provided at one end of the movable cover 20 facing the opening 15, and the sliders 22 are slidably embedded in the grooves 21; a sealing layer is provided at the contact point between the movable cover 20 and the opening 15.

[0026] The push plate 12, movable cover 20, slider 22, spring 17, connecting cylinder 11 and limiting shaft 19 move towards the side of the movable guide 3 that is close to the connecting piece 2.

[0027] The force of the push plate 12 is concentrated at the contact separation point of the movable guide 3, ensuring the accuracy and reliability of the mechanical action and avoiding jamming caused by uneven force.

[0028] The placement box 14 is equipped with a fire extinguishing agent injection port.

[0029] The electromagnetic coil 6 is equipped with a movable push rod. One end of the push rod is located inside the electromagnetic coil 6, and the other end of the push rod is movably connected to the end of the movable guide 3 away from the connecting piece 2.

[0030] Working principle: When a traditional air switch fails to operate normally, i.e., cannot disconnect the circuit, the moving conductor 3 and the connecting piece 2 cannot separate, causing an electric spark to be generated at their contact point. Figure 1-4 As shown, the generated electric spark will ignite the cotton cloth layer 18, thereby releasing the effect of the fixed connection between the push plate 12 and the connecting cylinder 11. Under the action of the spring 17, the limiting shaft 19 is pushed to move inside the connecting cylinder 11, which drives the push plate 12 to move towards the end of the movable guide 3 close to the connecting piece 2, until the movable guide 3 is pushed, so that the movable guide 3 is disconnected from the connecting piece 2, thereby achieving the function of disconnecting the circuit.

[0031] At the same time, the push plate 12 moves under the action of the spring 17, which drives the movable cover 20 connected to it to move in the same direction. Under the action of the slide groove 21 and the slider 22, the movable cover 20 can move stably, so that the opening 15 is connected to the inner cavity of the air switch box 10. At this time, the compressed fire extinguishing agent in the placement box 14 is sprayed into the inner cavity of the air switch box 10, which can extinguish the open flame in the air switch, avoid a large-scale fire, and protect the air switch and the surrounding area.

[0032] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. An air switch with a safety protection structure, comprising an air switch box (10), a movable guide (3), a rotating shaft (13), an electromagnetic coil (6), a connector (9), and a switch handle (8), characterized in that: The air switch box (10) has an inner wall (16). One end of the air switch box (10) has an input end (1), and the other end has an output end (4). The input end (1) is connected to a connecting piece one (2), and the output end (4) is connected to a connecting piece two (5). The connecting piece two (5) is connected to a copper wire (7). The electromagnetic coil (6) is located inside the air switch box (10). The copper wire (7) passes through the electromagnetic coil (6) and is connected to one end of the movable conductor (3). The other end of the movable conductor (3) is connected to the connecting piece. The through piece (2) is attached; the movable guide (3) is movably connected to the inner wall of the air switch box (10) via a rotating shaft (13), the rotating shaft (13) is located in the middle of the movable guide (3); a connecting cylinder (11) is fixedly provided on the inner wall (16), the connecting cylinder (11) is provided with a protective component; the movable guide (3) is movably connected to the connecting piece (9) on the side near the copper wire (7), the connecting piece (9) is movably connected to the switch handle (8), the switch handle (8) is rotatably connected to the air switch box (10).

2. An air switch with a safety protection structure according to claim 1, characterized in that: The protective assembly includes a placement box (14), an opening (15), and a push plate (12); the air switch box (10) has an opening (15) on its side wall, the placement box (14) is fixedly connected to the outside of the opening (15), and the placement box (14) is filled with compressed fire extinguishing agent; a sliding assembly is provided on the side of the opening (15) facing the inner cavity of the air switch box (10), the sliding assembly is connected to a movable cover (20), and the movable cover (20) is fixedly connected to the push plate (12); the push plate (12) is connected to a limiting shaft (19), one end of the limiting shaft (19) is movably inserted into the connecting cylinder (11); a spring (17) is provided in the connecting cylinder (11), one end of the spring (17) is fixedly connected to the inner wall (16), and the other end is fixedly connected to the limiting shaft (19); the outer surface of the push plate (12) is covered with a cotton cloth layer (18), and the cotton cloth layer (18) is fixedly connected to the outer wall of the connecting cylinder (11).

3. An air switch with a safety protection structure according to claim 2, characterized in that: The sliding assembly includes a pair of grooves (21) opened on the opening (15); a pair of sliders (22) are fixedly provided on one end of the movable cover (20) facing the opening (15), and the sliders (22) are slidably embedded in the grooves (21); a sealing layer is provided at the contact point between the movable cover (20) and the opening (15).

4. An air switch with a safety protection structure according to claim 3, characterized in that: The push plate (12), movable cover (20), slider (22), spring (17), connecting cylinder (11) and limiting shaft (19) move in the direction of the movable guide (3) and are close to the connecting piece (2).

5. An air switch with a safety protection structure according to claim 4, characterized in that: The placement box (14) is provided with a fire extinguishing agent injection port.

6. An air switch with a safety protection structure according to claim 5, characterized in that: The electromagnetic coil (6) is provided with a movable push rod. One end of the push rod is located inside the electromagnetic coil (6), and the other end of the push rod is movably connected to the end of the movable guide (3) away from the connecting piece (2).

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