Circuit breaker electric operation mechanism

Abstract

A circuit breaker electric operation mechanism relates to a manual operation mechanism, a circuit breaker, a handle and a square shaft. The handle has an opening position and a closing position. The electric operation mechanism comprises a motor, a bull gear mandrel, a bull gear, a pinion and a controller; the pinion is sleeved on the motor shaft and is meshed with the bull gear; a mandrel of the large gear is inserted into the square shaft and is provided with a driving lever; the bull gear is rotationally connected with the bull gear mandrel; when the motor operates, the eccentric shaft driving rod A and the eccentric shaft driving rod B which are located on the large gear push the shifting rod to move, and the square shaft is driven to rotate. The controller controls the motor to run through the sensor, the eccentric shaft driving rod A is reset to the initial position and directly faces the sensor when operation is finished, the handle is manually operated, the square shaft rotates to drive the deflector rod to synchronously rotate, and at the moment, the two driving rods are both outside the deflector rod movement interval; and the square shaft is linked with the manual operation mechanism to open and close the circuit breaker and drive the handle. According to the structure of the utility model, the switching between an electric operation mode and a manual operation mode is realized through the linkage of gear transmission and the eccentric shaft, and the problem that the traditional electric operation and manual operation cannot coexist is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of switches, in particular to an electric operating mechanism for a circuit breaker. Background Art

[0002] The functional unit room of the traditional structure of the distribution cabinet is usually equipped with a manual push interlocking mechanism, a manual opening and closing mechanism or an electric opening and closing mechanism.

[0003] The traditional electric-operated opening and closing structure cannot coexist with the manual-operated opening and closing structure, which is inconvenient to use. Moreover, when you want to upgrade the manual operation to the electric operation, the disassembly and assembly are complicated. Summary of the Invention

[0004] The purpose of the utility model is to overcome the defects of the prior art and provide a circuit breaker electric operating mechanism which has a simple structure, is easy to operate, is convenient for manual installation and upgrading, can coexist with a manual operating mechanism, and is adaptable to circuit breakers of different heights.

[0005] To achieve the above-mentioned purpose, the utility model adopts an electric operating mechanism for a circuit breaker, which involves a drawer (1), a manual operating mechanism (2), a circuit breaker (3), a handle (4), and a square shaft (5). The handle (4) has an opening position and a closing position, and is characterized in that: the electric operating mechanism (6) includes a motor (7), a large gear spindle (8), a large gear (9), a small gear (10), and a controller (11); the small gear (10) is sleeved on the shaft of the motor (7) and meshed with the large gear (9); the large gear spindle (8) is plugged into the square shaft (5) and includes a shifting rod (14); the large gear (9) is rotatably connected to the large gear spindle (8); when the motor (7) moves, the eccentric shaft driving rod A (15) and the eccentric shaft driving rod A (15) on the large gear (9) are rotated. The shaft drive rod B (16) moves accordingly and pushes the lever (14) to move, thereby driving the square shaft (5) to rotate; the controller (11) includes a sensor (13) to control the movement of the motor (7); at the end of the operation, the eccentric shaft drive rod A (15) returns to the initial position, facing the sensor (13); at this time, the handle (4) is manually operated, and the square shaft (5) plugged therein rotates to drive the lever (14) to move synchronously; the positions of the eccentric shaft drive rod A (15) and the eccentric shaft drive rod B (16) are both outside the opening and closing reset movement range of the lever (14); when the square shaft (5) rotates, it drives the hand-operated mechanism (2) plugged therein to open and close the circuit breaker (3), and drives the handle (4) to move.

[0006] In particular, the control signal received by the controller (11) may be transmitted as a wired signal or as a wireless signal.

[0007] Specifically, the electric operating mechanism (6), the manual operating mechanism (2), and the circuit breaker (3) are sequentially located inside the drawer (1) from front to back. The handle (4) is located on the door of the drawer (1). The electric operating mechanism (6) further includes a fixed bracket (12), a front cover (17), and a rear cover (18). The large gear spindle (8) is rotatably connected to the front cover (17) and the rear cover (18). The fixed bracket (12) is fixed on the bottom plate of the drawer (1) and has a positioning groove (19). There is a fixing member (20) on the positioning groove (19) connected to the front cover (17). The height of the front cover (17) is adjusted by adjusting the position of the fixing member (20). The controller (11) is fixed on the rear cover (18), and the motor (7) is fixed on the rear cover (18).

[0008] Specifically, when the controller (11) receives a tripping signal, the motor (7) starts to rotate, driving the small gear (10) to rotate, thereby driving the large gear (9) to start rotating. The eccentric shaft drive rod A (15) pushes the lever (14) to move. When the operating mechanism of the circuit breaker (3) reaches the tripping position, the controller (11) determines that the operating mechanism of the circuit breaker (3) has reached the tripping position. At this time, the motor (7) starts to rotate in the reverse direction, driving the large gear (9) to rotate. When the eccentric shaft drive rod A (15) reaches the initial position, the sensor (13) receives a signal and the motor (7) stops rotating.

[0009] Specifically, when the controller (11) receives a closing signal, at this time the motor (7) starts to drive the small gear (10) to rotate in the reverse direction, driving the large gear (9) to start moving. The eccentric shaft drive rod B (16) pushes the lever (14) to move. When the operating mechanism of the circuit breaker (3) reaches the closing position, the controller (11) determines that the operating mechanism of the circuit breaker (3) has reached the closing position. At this time, the motor (7) starts to rotate in the forward direction, driving the large gear (9) to rotate. When the eccentric shaft drive rod A (15) reaches the initial position, the sensor (13) receives a signal and the motor (7) stops rotating.

[0010] Specifically, the motor (7) can also be fixed on the front cover (17). At this time, the controller (11) controls the running direction of the motor (7) to be opposite to that when the motor (7) is fixed on the rear cover (18). Description of the Drawings

[0011] Figure 1 The side view of the rear cover of the housing of the present utility model is omitted.

[0012] Figure 2 The top view of the front cover and the fixed bracket of the housing of the present utility model is omitted.

[0013] Figure 3 Front view of the present utility model.

[0014] Figure 4 Top view of the internal distribution of the present utility model within the drawer unit.

[0015] The figure includes: drawer (1), manual operating mechanism (2), circuit breaker (3), handle (4), square shaft (5), electric operating mechanism (6), motor (7), large gear spindle (8), large gear (9), small gear (10), controller (11), fixed bracket (12), sensor (13), lever (14), eccentric shaft drive rod A (15), eccentric shaft drive rod B (16), front cover (17), rear cover (18). Specific embodiments

[0016] To make the above objects, features, and advantages of the present utility model more apparent and understandable, the following detailed description of the specific embodiments of the present utility model will be given with reference to the accompanying drawings. Many specific details are set forth in the following description to facilitate a full understanding of the present invention. However, the present utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific embodiments disclosed below.

[0017] As Figure 4 shown, the present utility model adopts an electric operating mechanism for a circuit breaker, which relates to a drawer (1), a manual operating mechanism (2), a circuit breaker (3), a handle (4), and a square shaft (5). The handle (4) has a tripping position and a closing position. The electric operating mechanism (6), the manual operating mechanism (2), and the circuit breaker (3) are sequentially located inside the drawer (1) from front to back, and the handle (4) is located on the door of the drawer (1).

[0018] As Figure 1 、 2As shown in FIGS. 3, the electric operating mechanism (6) includes a motor (7), a large gear spindle (8), a large gear (9), a small gear (10), and a controller (11); the small gear (10) is sleeved on the shaft of the motor (7) and meshes with the large gear (9); the large gear spindle (8) is inserted into the square shaft (5) and includes a lever (14); the large gear (9) is rotatably connected to the large gear spindle (8); when the motor (7) moves, the eccentric shaft drive rod A (15) and the eccentric shaft drive rod B (16) on the large gear (9) move accordingly and push the lever (14) to move, thereby driving the square shaft (5) to rotate; the controller (11) includes a sensor (13) to control the movement of the motor (7). When the operation ends, the eccentric shaft drive rod A (15) returns to its initial position and faces the sensor (13). At this time, manually operate the handle (4), and the square shaft (5) inserted therein rotates to drive the lever (14) to move synchronously. The positions of the eccentric shaft drive rod A (15) and the eccentric shaft drive rod B (16) are both outside the opening / closing and reset movement range of the lever (14); when the square shaft (5) rotates, it drives the manual operating mechanism (2) inserted therein to open / close the circuit breaker (3) and drives the handle (4) to move. The electric operating mechanism (6) further includes a fixed bracket (12), a front cover (17), and a rear cover (18); the large gear spindle (8) is rotatably connected to the front cover (17) and the rear cover (18). The fixed bracket (12) is fixed on the bottom plate of the drawer (1) and has a positioning groove (19). There is a fixing member (20) on the positioning groove (19) connected to the front cover (17). The height of the front cover (17) is adjusted by adjusting the position of the fixing member (20). The controller (11) is fixed on the rear cover (18), and the motor (7) is fixed on the rear cover (18).

[0019] Working principle: When the controller (11) receives a tripping signal, the motor (7) starts to rotate, driving the small gear (10) to rotate, thereby driving the large gear (9) to start rotating. The eccentric shaft drive rod A (15) pushes the lever (14) to move; when the operating mechanism of the circuit breaker (3) reaches the tripping position, the controller (11) determines that the operating mechanism of the circuit breaker (3) has reached the tripping position. At this time, the motor (7) starts to rotate in the reverse direction, driving the large gear (9) to rotate. When the eccentric shaft drive rod A (15) reaches the initial position, the sensor (13) receives a signal and the motor (7) stops rotating; when the controller (11) receives a closing signal, at this time the motor (7) starts to drive the small gear (10) to rotate in the reverse direction, driving the large gear (9) to start moving. The eccentric shaft drive rod B (16) pushes the lever (14) to move; when the operating mechanism of the circuit breaker (3) reaches the closing position, the controller (11) determines that the operating mechanism of the circuit breaker (3) has reached the closing position. At this time, the motor (7) starts to rotate forward, driving the large gear (9) to rotate. When the eccentric shaft drive rod A (15) reaches the initial position, the sensor (13) receives a signal and the motor (7) stops rotating; the motor (7) can also be fixed on the front cover (17). At this time, the controller (11) controls the running direction of the motor (7) to be opposite to that when the motor (7) is fixed on the rear cover (18).

Claims

1. A circuit breaker electric operating mechanism, which relates to a drawer (1), a manual operating mechanism (2), a circuit breaker (3), a handle (4), and a square shaft (5). The handle (4) has an opening position and a closing position, and is characterized in that: The electric operating mechanism (6) includes a motor (7), a large gear spindle (8), a large gear (9), a small gear (10), and a controller (11); the small gear (10) is sleeved on the shaft of the motor (7) and meshes with the large gear (9); the large gear spindle (8) is inserted into the square shaft (5) and includes a lever (14); the large gear (9) is rotatably connected to the large gear spindle (8); when the motor (7) moves, the eccentric shaft drive rod A (15) and the eccentric shaft drive rod B (16) on the large gear (9) move accordingly and push the lever (14) to move, thereby driving the square shaft (5) to rotate; the controller (11) includes a sensor (13), controls the movement of the motor (7), and when the operation ends, the eccentric shaft drive rod A (15) returns to the initial position, facing the sensor (13). At this time, manually operate the handle (4), and the square shaft (5) inserted therein rotates to drive the lever (14) to move synchronously. The positions of the eccentric shaft drive rod A (15) and the eccentric shaft drive rod B (16) are both outside the closing and opening reset movement range of the lever (14); when the square shaft (5) rotates, it drives the manual operating mechanism (2) inserted therein to close and open the circuit breaker (3) and drives the handle (4) to move.

2. The electric operating mechanism of a circuit breaker according to claim 1, characterized in that, The control signal received by the controller (11) can be transmitted by a wired signal or a wireless signal.

3. The electro-mechanical operating mechanism of a circuit breaker according to claim 1, characterized in that, The electric operating mechanism (6), the manual operating mechanism (2), and the circuit breaker (3) are sequentially located inside the drawer (1) from front to back. The handle (4) is located on the door of the drawer (1). The electric operating mechanism (6) further includes a fixed bracket (12), a front cover (17), and a rear cover (18); the large gear spindle (8) is rotatably connected to the front cover (17) and the rear cover (18). The fixed bracket (12) is fixed on the bottom plate of the drawer (1) and has a positioning groove (19). There is a fixing member (20) on the positioning groove (19) connected to the front cover (17). The height of the front cover (17) is adjusted by adjusting the position of the fixing member (20). The controller (11) is fixed on the rear cover (18), and the motor (7) is fixed on the rear cover (18).

4. The electric operating mechanism of a circuit breaker according to claim 1 or 2, characterized in that, When the controller (11) receives a tripping signal, the motor (7) starts to rotate, drives the small gear (10) to rotate, and thereby drives the large gear (9) to start rotating. The eccentric shaft drive rod A (15) pushes the lever (14) to move; when the operating mechanism of the circuit breaker (3) reaches the tripping position, the controller (11) determines that the operating mechanism of the circuit breaker (3) has reached the tripping position. At this time, the motor (7) starts to rotate in the reverse direction, drives the large gear (9) to rotate. When the eccentric shaft drive rod A (15) reaches the initial position, the sensor (13) receives a signal and the motor (7) stops rotating.

5. The electric operating mechanism of a circuit breaker according to claim 1 or 2, characterized in that, When the controller (11) receives a closing signal, at this time the motor (7) starts to drive the pinion gear (10) to rotate in the reverse direction, driving the large gear (9) to start moving, and the eccentric shaft drive rod B (16) pushes the lever (14) to move; when the operating mechanism of the circuit breaker (3) reaches the closing position, the controller (11) determines that the operating mechanism of the circuit breaker (3) reaches the closing position. At this time, the motor (7) starts to rotate forward, driving the large gear (9) to rotate. When the eccentric shaft drive rod A (15) reaches the initial position, the sensor (13) receives a signal and the motor (7) stops rotating.

6. The electric operating mechanism of a circuit breaker according to claim 3, characterized in that, The motor (7) can be alternatively fixed on the front cover (17). At this time, the controller (11) controls the running direction of the motor (7) to be opposite to that when the motor (7) is fixed on the rear cover (18).

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