Circuit breaker capable of being electrically switched on and off

Abstract

The utility model discloses a circuit breaker capable of being electrically switched, which relates to the technical field of circuit breakers and comprises an outer shell, an inner shell, a switching-on and switching-off device, a binding post and a conductive component. The inner shell is an insulating component, and is internally provided with a switching-on and switching-off device, a binding post and a conductive part. The switching-on and switching-off device adopts an electric driving module, a motor drives a shaft sleeve to rotate, a gear is driven to be meshed with a handle toothed plate, and switching-on and switching-off operation is achieved. The handle is connected with the deflection seat through a connecting rod, and the deflection seat drives the deflection plate and the contact to rotate and contact with the conductive contact piece to complete closing. The electric driving module is provided with an abutting protrusion and an abutting groove, and it is ensured that the handle can automatically rotate during leakage protection. The tops of the outer shell and the inner shell are provided with avoiding holes for deflection of the handle, and two sides are provided with threading holes connected with an external cable. According to the utility model, the electric driving structure is simplified, the operation flexibility and compatibility are improved, the reliability and stability of the circuit breaker are enhanced, and the circuit breaker is suitable for various electric power system application scenes.

Description

Technical Field

[0001] This utility model relates to the field of circuit breaker technology, specifically to an electrically switchable circuit breaker. Background Technology

[0002] In power systems, circuit breakers, as critical protection and control devices, are responsible for breaking and closing circuits, and are essential for the safe and stable operation of the power system. Traditional circuit breakers are mainly operated manually, which is not flexible and convenient enough in some applications requiring a high degree of automation. With the continuous advancement of electrical technology, electrically operated circuit breakers have emerged. They achieve remote or automatic control through an electric drive mechanism, greatly improving operational efficiency and safety.

[0003] However, existing electrically driven circuit breakers still have some shortcomings in terms of electric drive. For example, the electric drive mechanism of some circuit breakers is complex in design, containing numerous components, which not only increases manufacturing costs but may also lead to maintenance difficulties. At the same time, complex drive mechanisms are prone to failure after long-term operation, affecting the reliability and stability of the circuit breaker.

[0004] Furthermore, some electrically operated circuit breakers lack good compatibility between electric drive and manual operation. When manual operation is required, the complex electric drive mechanism may become an obstacle, making manual operation difficult or impractical. In the event of electric drive failure, these circuit breakers often cannot smoothly transition to manual operation mode, causing inconvenience to emergency response in the power system.

[0005] To address the aforementioned issues, the industry has been exploring simpler, more efficient, and more reliable electric drive solutions. This technical solution proposes an electrically operated circuit breaker with an innovative electric drive module, aiming to overcome the shortcomings of existing technologies and provide an electrically operated circuit breaker with a simpler structure, more flexible operation, and better compatibility. This electric drive module rotates a motor-driven bushing, which in turn drives a gear to mesh with a toothed plate on the handle, achieving opening and closing operations. Simultaneously, the module is designed with structures such as contact protrusions and contact grooves to ensure that the handle can automatically return under conditions such as leakage protection, thus not affecting the normal function of the circuit breaker. This design not only improves the automation level of the circuit breaker but also ensures its reliability and stability under various conditions. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides an electrically operable circuit breaker, which solves the problems mentioned in the background section.

[0007] To achieve the above objectives, this utility model provides the following technical solution: an electrically operable circuit breaker, comprising an outer shell, an inner shell, a switching device, terminals A and B, a conductive sheet, and a conductive contact. The inner shell is an insulating component and is installed inside the outer shell. The switching device, terminals A and B, the conductive sheet, and the conductive contact are all installed inside the inner shell. The switching device can be electrically deflected to contact or separate from the conductive contact, thereby controlling the closed or open state of the circuit breaker.

[0008] Furthermore, terminal A and terminal B are symmetrically arranged. The output end of terminal A is in contact with the conductive sheet, and the other end of the conductive sheet is in contact with the conductive contact piece. The output end of the opening and closing device is connected to terminal B through a flexible wire.

[0009] Furthermore, the opening and closing device includes an electric drive module, a handle, a swing seat, and a swing plate. The handle is rotatably connected to the top of the swing seat via a connecting rod. The swing plate is fixedly connected inside the swing seat, and the bottom end of the swing plate is integrally connected to a contact head, which can contact the conductive contact piece.

[0010] Furthermore, the electric drive module includes a motor, a bushing is mounted on the drive end of the motor, a sleeve is engaged outside the bushing, a gear is fixed outside the sleeve, and the gear meshes with a toothed plate at the bottom of the handle.

[0011] Furthermore, both the output end of the motor and the inside of the bushing have a "D"-shaped fitting structure. The bushing surface is integrally connected with a contact protrusion, and a contact groove is opened on the inner surface of the sleeve. The contact protrusion can rotate in the contact groove and drive the sleeve to rotate synchronously.

[0012] Furthermore, a locking groove is formed on the outer surface of the sleeve, and a locking protrusion is integrally connected inside the gear, with the locking protrusion engaging in the locking groove.

[0013] Furthermore, the top of the outer shell and the inner shell are provided with a clearance hole, through which the handle is exposed outside the outer shell and can swing within the clearance hole.

[0014] Furthermore, both the outer casing and the inner casing have through holes on both sides, through which external cables can be connected to terminals A and B respectively.

[0015] This utility model provides an electrically operable circuit breaker. Compared with the prior art, it has the following advantages:

[0016] 1. Through its innovatively designed electric drive module, this circuit breaker effectively simplifies the complex drive mechanism found in traditional electric circuit breakers. This reduces the number of parts, lowering manufacturing costs and equipment weight, thus facilitating installation and maintenance.

[0017] 2. The electric drive module enables circuit breakers to be opened and closed remotely or automatically, greatly improving operational flexibility and convenience. This is particularly important for power systems with high automation requirements, significantly improving operational efficiency and safety.

[0018] 3. The electric drive module and manual operating mechanism achieve excellent compatibility. When manual operation is required, the electric drive module will not be an obstacle, ensuring the availability of the circuit breaker under various conditions. Meanwhile, the design of the contact protrusion and contact groove ensures that the handle can automatically rotate in situations such as leakage protection, enhancing the reliability and stability of the circuit breaker.

[0019] 4. The simplified structure and efficient operation make it easier for users to master the use of circuit breakers, reducing operational difficulty. At the same time, the reduced number of parts also means fewer potential points of failure, lowering maintenance costs and reducing maintenance difficulty.

[0020] 5. The electric drive module of this circuit breaker is flexibly designed to adapt to the needs of various power systems and application scenarios. Whether in industrial, commercial, or residential applications, it provides stable and reliable circuit protection and control functions. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the disassembled structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the internal structure of the inner shell of this utility model;

[0023] Figure 3 This is a schematic diagram of the opening and closing gate device in this utility model;

[0024] Figure 4 This is a schematic diagram of the disassembled structure of the electric drive module in this utility model;

[0025] Figure 5 This is a schematic diagram of the structure of the bushing, sleeve, and gear of this utility model;

[0026] Figure 6 This is a top view of the electric drive module after assembly in this utility model;

[0027] Figure 7 This utility model Figure 6 Cross-sectional view of AA in the middle;

[0028] Figure 8 This is a schematic diagram of the assembly structure of this utility model;

[0029] Figure 9 This is a schematic diagram of the structure of the present invention in the open and closed states.

[0030] In the diagram: 1. Outer shell; 11. Clearance hole; 12. Wire hole; 2. Inner shell; 3. Opening and closing device; 31. Electric drive module; 311. Motor; 312. Bushing; 3121. Abutment protrusion; 313. Sleeve; 3131. Abutment groove; 3132. Locking groove; 314. Gear; 3141. Locking protrusion; 32. Handle; 321. Gear plate; 33. Oscillating seat; 34. Oscillating plate; 341. Contact; 35. Connecting rod; 4. Terminal A; 5. Terminal B; 6. Conductive sheet; 7. Conductive contact sheet. Detailed Implementation

[0031] 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.

[0032] Please see Figure 1-9 This utility model provides a technical solution: an electrically operable circuit breaker, including an outer shell 1, an inner shell 2, a switching device 3, terminals A4 and B5, a conductive sheet 6, and a conductive contact 7. The inner shell 2 is an insulating component and is installed and fixed inside the outer shell 1. The switching device 3, terminals A4 and B5, conductive sheet 6, and conductive contact 7 are all installed inside the inner shell 2. Terminals A4 and B5 are symmetrically arranged. The output end of terminal A4 contacts the conductive sheet 6, and the end of the conductive sheet 6 facing away from terminal A4 contacts the conductive contact 7. The output end of the switching device 3 is connected to terminal B5 by a flexible wire. The switching device 3 can be electrically swung. When it swung to contact the conductive contact 7, the circuit breaker is in the closed state; when it is not in contact, the circuit breaker is in the open state.

[0033] The opening and closing device 3 includes an electric drive module 31 installed inside the inner housing 2, a handle 32 rotatably connected inside the inner housing 2, a swing seat 33 rotatably connected inside the inner housing 2, and a swing plate 34 fixedly connected inside the swing seat 33. The top of the handle 32 and the swing seat 33 are rotatably connected through a connecting rod 35. That is, when the handle 32 is deflected, the swing seat 33 and the swing plate 34 can be driven to deflect synchronously through the connecting rod 35. The bottom end of the swing plate 34 is integrally connected to the contact 341, which can contact the surface of the conductive contact piece 7. The bottom end of the handle 32 is connected to and fixed with an arc-shaped toothed plate 321.

[0034] The electric drive module 31 includes a motor 311 installed inside the inner housing 2. A bushing 312 is fixedly mounted on the drive end of the motor 311. A sleeve 313 is fitted on the outside of the bushing 312. A gear 314 is fixed on the outside of the sleeve 313. The gear 314 meshes with a gear plate 321.

[0035] The output end of the motor 311 and the interior of the bushing 312 are both configured with a matching "D" shape. The surface of the bushing 312 is integrally connected with the abutment protrusion 3121. The inner surface of the sleeve 313 is provided with an abutment groove 3131. The bushing 312 can drive the abutment protrusion 3121 to rotate inside the abutment groove 3131. When the abutment protrusion 3121 abuts against the protruding part inside the abutment groove 3131, the bushing 312 drives the sleeve 313 to rotate synchronously, thereby driving the gear 314 to rotate. The outer surface of the sleeve 313 is provided with a locking groove 3132. The interior of the gear 314 is integrally connected with a locking protrusion 3141, which engages inside the locking groove 3132.

[0036] When a closing operation is required, the motor 311 drives the bushing 312 to rotate inside the sleeve 313, and at the same time, the abutting protrusion 3121 also rotates inside the abutting groove 3131. When the abutting protrusion 3121 rotates to abut against the abutting groove 3131, the bushing 312, sleeve 313, and gear 314 will rotate synchronously. The gear 314 meshes with the gear plate 321, thereby driving the handle 32 to deflect. Under the pushing action of the connecting rod 35, the deflector seat 33 and the deflector plate 34 rotate clockwise as a whole until the bottom of the deflector plate 34 is reached. When the contact 341 abuts against the surface of the conductive contact 7, the circuit breaker is closed. When the circuit breaker needs to be opened, the same operation can be performed. It should be noted that because of the design of the contact protrusion 3121 and the contact groove 3131, the handle 32 can also be automatically rotated when the circuit breaker is in the event of leakage protection. The automatic rotation structure is an inherent structure of the existing circuit breaker and will not be described in detail here. It will not be unable to rotate due to the presence of the motor 311. In other words, the circuit breaker achieves electric opening and closing without affecting the leakage protection measures of the circuit breaker.

[0037] Both the outer casing 1 and the inner casing 2 have a clearance hole 11 pre-drilled on their tops. The handle 32 is exposed outside the outer casing 1 through the clearance hole 11, and the handle 32 swings inside the clearance hole 11. Therefore, the length of the clearance hole 11 must meet the swing range of the handle 32. Both the outer casing 1 and the inner casing 2 have wire holes 12 pre-drilled on their sides. External cables can be connected to terminals A4 and B5 respectively through the wire holes 12 on both sides, thus facilitating the connection of the circuit breaker to external lines.

[0038] In addition, it should be noted that the circuit breaker is also equipped with a circuit board, which integrates a communication module and a microcontroller. The communication module can connect to an external remote control terminal (such as a computer or mobile phone). The opening or closing signal can be sent to the communication module, and then combined with the microcontroller to control the motor 311, thereby realizing remote or automatic control to achieve the opening and closing operation.

Claims

1. An electrically switchable circuit breaker, characterized by: The utility model relates to a circuit breaker, including outer shell (1), inner shell (2), open and close brake device (3), terminal post A (4), terminal post B (5), conducting sheet (6) and conducting contact (7), the inner shell (2) is insulating component and installs in outer shell (1) inside, open and close brake device (3), terminal post A (4), terminal post B (5), conducting sheet (6), conducting contact (7) are all installed in inner shell (2) inside, open and close brake device (3) can be with electrically driven manner deflection to contact or leave conducting contact (7), thereby control circuit breaker's closing or open state.

2. The electrically switchable circuit breaker of claim 1, wherein: Terminal post A (4) and terminal post B (5) are symmetrically arranged, the output end of terminal post A (4) is in contact with conducting sheet (6), the other end of conducting sheet (6) is in contact with conducting contact (7), and the output end of open and close brake device (3) is connected with terminal post B (5) through flexible wire.

3. The electrically switchable circuit breaker of claim 1, wherein: Open and close brake device (3) includes electric drive module (31), handle (32), deflection seat (33) and deflection board (34), handle (32) is rotatably connected with the top of deflection seat (33) through connecting rod (35), deflection board (34) is fixedly connected inside deflection seat (33), and the bottom end of deflection board (34) is integrally connected with contact (341), and contact (341) can be in contact with conducting contact (7).

4. The electrically switchable circuit breaker of claim 3, wherein: Electric drive module (31) includes motor (311), and the driving end of motor (311) is installed with shaft sleeve (312), shaft sleeve (312) is clamped with sleeve (313) outside, sleeve (313) is fixed with gear (314) outside, and gear (314) is engaged with the toothed plate (321) of the bottom end of handle (32).

5. The electrically switchable circuit breaker of claim 4, wherein: The output end of motor (311) and the inside of shaft sleeve (312) are all "D" shape adaptation structure, and the surface of shaft sleeve (312) is integrally connected with abutting convex (3121), and the inner surface of sleeve (313) is provided with abutting groove (3131), and abutting convex (3121) can rotate in abutting groove (3131) and drive sleeve (313) to rotate synchronously.

6. The electrically switchable circuit breaker of claim 4, wherein: The outer surface of sleeve (313) is provided with clamping groove (3132), and gear (314) is integrally connected with clamping convex (3141) inside, and clamping convex (3141) is clamped in clamping groove (3132).

7. The electrically switchable circuit breaker of claim 1, wherein: The top of outer shell (1) and inner shell (2) is provided with avoiding hole (11) in common, handle (32) is exposed outside outer shell (1) through avoiding hole (11), and can be deflected in avoiding hole (11).

8. The electrically switchable circuit breaker of claim 1, wherein: The both sides of outer shell (1) and inner shell (2) are provided with threading hole (12), and external cable can be connected with terminal post A (4) and terminal post B (5) through threading hole (12) respectively.

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