Novel magnetic control quick-acting pole-mounted circuit breaker

Abstract

The utility model relates to the technical field of electrical equipment, in particular to a novel magnetic control quick-acting pole-mounted circuit breaker, which comprises an insulating shell. The power supply further comprises a wire inlet column, the wire inlet column is fixedly connected to the insulating shell, a wire inlet terminal is electrically connected to the lower portion of the wire inlet column, the wire inlet terminal is fixedly connected to the insulating shell, an electromagnetic coil is electrically connected to the lower portion of the wire inlet terminal, a mounting plate is fixedly connected to the insulating shell, and the electromagnetic coil is fixedly connected to the mounting plate. A control spring is arranged in the electromagnetic coil, an armature is fixedly connected to the control spring and slidably connected with the mounting plate, and a pin is fixedly connected to the lower portion of the armature. According to the utility model, through the rapid reaction between the electromagnetic coil and the armature, the response speed is greatly improved, rapid disconnection when a circuit is short-circuited is realized, the impact of current on electrical equipment is reduced, the fire risk is reduced, the anti-interference capability and the environmental adaptability are further improved, and the risks of contact burning loss and explosion of the arc extinguish chamber are avoided; and the later maintenance cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of electrical equipment technology, and in particular to a novel magnetically controlled fast-acting pole-mounted circuit breaker. Background Technology

[0002] A circuit breaker is an automatic switching device used to protect circuits. It is mainly used to control the connection and disconnection of circuits and automatically cut off the current when faults such as overload, short circuit or leakage occur in the circuit, so as to prevent equipment damage or fire and other safety accidents. Its core function is to quickly cut off the power supply in abnormal situations to ensure the safety of electrical systems and people. It can also be used for circuit connection and disconnection operations under normal conditions. Circuit breakers are widely used in power distribution systems in homes, industries and commerce and are key equipment for power safety protection.

[0003] Traditional circuit breakers rely on mechanical contacts and bimetallic strips to achieve protection functions. If the opening speed is too slow, it may prolong the duration of the arc, leading to contact burnout or even arc-extinguishing chamber explosion. If the opening and closing speed is too fast, excessive mechanical stress may cause component deformation or damage, increasing safety risks, accelerating line aging or causing explosions, and requiring frequent replacement of burnt coils or arc-extinguishing chambers, significantly increasing the overall operating cost.

[0004] Therefore, in response to the problems of traditional circuit breakers relying on mechanical contacts and bimetallic strips, which increase safety risks, accelerate line aging or cause explosions, and significantly increase overall operating costs, a new type of magnetically controlled fast-acting pole-mounted circuit breaker that can react quickly through electromagnetic effects can be designed. Utility Model Content

[0005] To overcome the problems of traditional circuit breakers relying on mechanical contacts and bimetallic strips, which increase safety risks, accelerate line aging or cause explosions, and significantly increase overall operating costs.

[0006] The technical solution of this utility model is as follows: a novel magnetically controlled fast-acting pole-mounted circuit breaker, comprising an insulating housing; and an input post, the input post being fixedly connected to the insulating housing, an input terminal being electrically connected below the input post, the input terminal being fixedly connected to the insulating housing, an electromagnetic coil being electrically connected below the input terminal, a mounting plate being fixedly connected to the insulating housing, the electromagnetic coil being fixedly connected to the mounting plate, a control spring being provided inside the electromagnetic coil, an armature being fixedly connected to the control spring, the armature and the mounting plate being slidably connected, a pin being fixedly connected below the armature, a control lever being fixedly connected below the pin, a first rotating shaft being fixedly connected to the control lever, and the first rotating shaft being rotatably connected to the insulating housing.

[0007] Preferably, the electrical components are connected through the input terminal to supply current to the inside of the circuit breaker. When the electrical components are working normally, the circuit breaker supplies current normally. When the electrical components are short-circuited, the current is amplified. The current passing through the electromagnetic coil generates a strong magnetic field, which applies pressure to the armature, compresses the control spring, and drives the armature and pin to move downward. At the same time, the pin applies pressure to the control lever, causing the control lever to rotate and interrupting the current supply.

[0008] Preferably, a contact frame is fixedly connected to the bottom of the mounting plate, the contact frame is electrically connected to the electromagnetic coil, and a receiving plate is movably connected to the bottom of the contact frame, the receiving plate being rotatably connected to the insulating housing.

[0009] Preferably, a first return spring is rotatably connected to the mounting plate, and a first connecting support is fixedly connected to the other end of the first return spring. The first connecting support is rotatably connected to the control lever.

[0010] Preferably, a connecting frame is fixedly connected above the first connecting support, and a handle is rotatably connected to the connecting frame.

[0011] Preferably, a second rotating shaft is fixedly connected to the handle, and the second rotating shaft is rotatably connected to the insulating housing.

[0012] Preferably, a second connecting support is rotatably connected below the receiving plate, and a second return spring is fixedly connected to the second connecting support. The other end of the second return spring is rotatably connected to the control lever.

[0013] Preferably, an arc-extinguishing grid is provided above the receiving plate, the arc-extinguishing grid is fixedly connected to the insulating shell, and an outgoing post is fixedly connected below the insulating shell.

[0014] The beneficial effects of this utility model are:

[0015] By utilizing the rapid response between the electromagnetic coil and the armature, the response speed is greatly improved, enabling rapid disconnection in the event of a short circuit. This reduces the impact of current on electrical equipment, lowers the risk of fire, and further enhances anti-interference capabilities and environmental adaptability. It also avoids the risks of contact burnout and arc-extinguishing chamber explosion, and reduces subsequent maintenance costs. Attached Figure Description

[0016] Figure 1 The diagram shown is a schematic representation of the overall three-dimensional structure of this utility model.

[0017] Figure 2 The diagram shown is a schematic representation of the joystick structure of this utility model.

[0018] Figure 3 The diagram shown is a schematic representation of the armature structure of this utility model.

[0019] Figure 4The diagram shown is a schematic representation of the structure of the second reset spring of this utility model.

[0020] Figure 5 The diagram shown is a schematic representation of the arc-extinguishing grid structure of this utility model.

[0021] Explanation of reference numerals in the attached drawings: 1. Insulating housing; 2. Inlet post; 3. Inlet terminal; 4. Electromagnetic coil; 5. Mounting plate; 6. Control spring; 7. Armature; 701. Pin; 8. First return spring; 9. First connecting support; 10. Operating lever; 11. First rotating shaft; 12. Connecting frame; 13. Handle; 14. Second rotating shaft; 15. Contact frame; 16. Receiving plate; 17. Second return spring; 18. Second connecting support; 19. Arc extinguishing grid; 20. Outlet post. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] Please see Figures 1-5 This utility model provides an embodiment: a novel magnetically controlled fast-acting pole-mounted circuit breaker, including an insulating housing 1; and an input post 2, the input post 2 being fixedly connected to the insulating housing 1, an input terminal 3 being electrically connected below the input post 2, the input terminal 3 being fixedly connected to the insulating housing 1, an electromagnetic coil 4 being electrically connected below the input terminal 3, a mounting plate 5 being fixedly connected to the insulating housing 1, the electromagnetic coil 4 being fixedly connected to the mounting plate 5, a control spring 6 being provided inside the electromagnetic coil 4, an armature 7 being fixedly connected to the control spring 6, the armature 7 being slidably connected to the mounting plate 5, and a pin 701 being fixedly connected below the armature 7. A control lever 10 is fixedly connected below the pin 701. A first rotating shaft 11 is fixedly connected to the control lever 10. The first rotating shaft 11 is rotatably connected to the insulating housing 1, and connects the electrical components through the inlet post 2 to supply current to the inside of the circuit breaker. When the electrical components are working normally, the circuit breaker supplies current normally. When the electrical components are short-circuited, the current is amplified. The current passing through the electromagnetic coil 4 generates a strong magnetic field, which applies pressure to the armature 7, compressing the control spring 6 and causing the armature 7 and the pin 701 to move downward. At the same time, the pin 701 applies pressure to the control lever 10, causing the control lever 10 to rotate and interrupting the current supply.

[0024] Please see Figures 1-3In this embodiment, a contact frame 15 is fixedly connected below the mounting plate 5. The contact frame 15 is electrically connected to the electromagnetic coil 4. A receiving plate 16 is movably connected below the contact frame 15. The receiving plate 16 is rotatably connected to the insulating shell 1. The electromagnetic coil 4 transmits current to the contact frame 15, and the contact frame 15 transmits current to the receiving plate 16, thus completing the current transmission. When the receiving plate 16 rotates, the current transmission path is interrupted. A first reset spring 8 is rotatably connected to the mounting plate 5. A first connecting support 9 is fixedly connected to the other end of the first reset spring 8. The first connecting support 9 is rotatably connected to the control lever 10. When the control lever 10 rotates, it compresses the first reset spring 8 and moves the first connecting support 9. A connecting frame 12 is fixedly connected above the first connecting support 9. A handle 13 is rotatably connected to the connecting frame 12. The first connecting support 9 moves the connecting frame 12, causing the connecting frame 12 to push the handle 13, thus tripping the circuit breaker.

[0025] Please see Figures 1-5 In this embodiment, a second rotating shaft 14 is fixedly connected to the handle 13. The second rotating shaft 14 is rotatably connected to the insulating housing 1. By rotating the handle 13, other components are driven to move, realizing manual closing and opening. A second connecting support 18 is rotatably connected below the receiving plate 16. A second return spring 17 is fixedly connected to the second connecting support 18. The other end of the second return spring 17 is rotatably connected to the control lever 10. When the control lever 10 is rotated, it drives the second return spring 17 to rotate, so that the second return spring 17 drives the receiving plate 16 to rotate. An arc-extinguishing grid 19 is provided above the receiving plate 16. The arc-extinguishing grid 19 is fixedly connected to the insulating housing 1. A lead post 20 is fixedly connected below the insulating housing 1. The arc-extinguishing grid 19 absorbs the arc generated during a short circuit, and the lead post 20 outputs the current.

[0026] During operation, electrical components are connected through input terminal 2 to supply current to the circuit breaker. When the electrical components are working normally, input terminal 2 supplies current to input terminal 3, and then electromagnetic coil 4 transmits current to contact frame 15. Contact frame 15 transmits current to receiving plate 16, and finally outputs it through output terminal 20, completing the current transmission. When the electrical components are short-circuited, the current is amplified. The current passing through electromagnetic coil 4 generates a strong magnetic field, applying pressure to armature 7, compressing control spring 6, and causing armature 7 and pin 701 to move downwards. Simultaneously, pin 701 applies pressure to the control lever 10, causing the control lever 10 to rotate, which in turn compresses the first reset spring 8 and moves the first connecting support 9. The first connecting support 9 then moves the connecting frame 12, causing the connecting frame 12 to push the handle 13 to complete the trip. At the same time, it also causes the second reset spring 17 to rotate, which in turn causes the receiving plate 16 to rotate, causing the contact frame 15 and the receiving plate 16 to separate, interrupting the current transmission line. The arc generated during the short circuit is then absorbed by the arc-extinguishing grid 19.

[0027] Through the above steps, the rapid response between the electromagnetic coil 4 and the armature 7 is utilized to significantly improve the response speed, enabling rapid disconnection in the event of a short circuit. This reduces the impact of current on electrical equipment, lowers the risk of fire, and further enhances anti-interference capabilities and environmental adaptability. It also avoids the risks of contact burnout and arc chamber explosion, and reduces subsequent maintenance costs. This addresses the problem that traditional circuit breakers rely on mechanical contacts and bimetallic strips, which increase safety risks, accelerate line aging, or cause explosions, significantly increasing overall operating costs.

Claims

1. A novel magnetically controlled fast-acting pole-mounted circuit breaker, comprising an insulating housing (1); characterized in that: It also includes an inlet post (2), an inlet post (2) fixedly connected to an insulating housing (1), an inlet terminal (3) electrically connected below the inlet post (2), an inlet terminal (3) fixedly connected to an insulating housing (1), an electromagnetic coil (4) electrically connected below the inlet terminal (3), an mounting plate (5) fixedly connected to an insulating housing (1), an electromagnetic coil (4) fixedly connected to a mounting plate (5), a control spring (6) provided inside the electromagnetic coil (4), an armature (7) fixedly connected to the control spring (6), the armature (7) and the mounting plate (5) are slidably connected, a pin (701) fixedly connected below the armature (7), a control lever (10) fixedly connected below the pin (701), a first rotating shaft (11) fixedly connected to the control lever (10), and the first rotating shaft (11) is rotatably connected to the insulating housing (1).

2. The novel magnetically controlled fast-acting pole-mounted circuit breaker according to claim 1, characterized in that: A contact frame (15) is fixedly connected below the mounting plate (5). The contact frame (15) and the electromagnetic coil (4) are electrically connected. A receiving plate (16) is movably connected below the contact frame (15). The receiving plate (16) is rotatably connected to the insulating shell (1).

3. A novel magnetically controlled fast-acting pole-mounted circuit breaker according to claim 1, characterized in that: The first reset spring (8) is rotatably connected to the mounting plate (5). The other end of the first reset spring (8) is fixedly connected to the first connecting support (9). The first connecting support (9) is rotatably connected to the control lever (10).

4. A novel magnetically controlled fast-acting pole-mounted circuit breaker according to claim 3, characterized in that: A connecting frame (12) is fixedly connected above the first connecting support (9), and a handle (13) is rotatably connected to the connecting frame (12).

5. A novel magnetically controlled fast-acting pole-mounted circuit breaker according to claim 4, characterized in that: A second rotating shaft (14) is fixedly connected to the handle (13), and the second rotating shaft (14) is rotatably connected to the insulating shell (1).

6. A novel magnetically controlled fast-acting pole-mounted circuit breaker according to claim 2, characterized in that: A second connecting support (18) is rotatably connected below the receiving plate (16), and a second reset spring (17) is fixedly connected on the second connecting support (18). The other end of the second reset spring (17) is rotatably connected to the control lever (10).

7. A novel magnetically controlled fast-acting pole-mounted circuit breaker according to claim 6, characterized in that: An arc-extinguishing grid (19) is provided above the receiving plate (16). The arc-extinguishing grid (19) is fixedly connected to the insulating shell (1). A lead-out post (20) is fixedly connected below the insulating shell (1).

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