Clutch device for electrically operated circuit breaker mechanism

Abstract

The application belongs to the technical field of low-voltage electrical apparatuses, and discloses a clutch device for a circuit breaker electric operating mechanism, which comprises a motor, a lower connector connected with the output shaft end of the motor, an upper connector connected with the lower connector, and a rotating shaft commonly installed on the upper connector and the lower connector, a T-shaped shaft is installed on the inner wall upper end of the lower connector, a supporting spring is installed on the bottom surface of the lower connector, an operating handle is slidably arranged on the inner wall of the rotating shaft, and a limiting assembly for limiting the operating handle is arranged on the rotating shaft. The application has the effect of reducing the difficulty of manually operating the rotating shaft.

Description

Technical Field

[0001] This utility model relates to the field of low-voltage electrical technology, and in particular to a clutch device for the electric operating mechanism of a circuit breaker. Background Technology

[0002] Currently, with the development of low-voltage electrical appliances and the popularization of rural power grid transformation, intelligent electrical protection switches are a new generation of high-tech intelligent electrical safety products that break through traditional electrical safety protection devices. They are developed by combining the principles of mechanical automation with modern electronic control technology. However, existing circuit breakers with automatic reclosing either lack a clutch device or have an overly bulky clutch device, increasing the overall size of the switch. Furthermore, even if a clutch device meets the requirements, it fails to achieve the expected results, meaning that manual operation still requires a large amount of force and may even have unreliable operation.

[0003] Chinese utility model patent CN103177911A discloses a clutch device for a circuit breaker, comprising a rotating shaft, an upper connector, a lower connector, a T-shaped shaft, and a spring. The lower connector is connected to a motor drive, and a spring is installed between them. The upper and lower connectors are interlocked, with a T-shaped shaft between them. The upper connector is fixedly connected to the rotating shaft. When switching from electric to manual operation, the operating handle is inserted into the hexagonal through hole of the rotating shaft and pressed down, disengaging the upper and lower connectors, allowing for manual operation. This invention is simple and convenient to operate, and has a compact structure and small size.

[0004] Regarding the aforementioned technologies, the inventors believe the following drawbacks exist: During manual operation, the device connects the operating handle to the hexagonal through-hole and moves the operating lever downwards to disengage the upper and lower connectors, thereby disconnecting the motor from the crank and enabling manual rotation of the shaft, ultimately achieving the purpose of opening and closing the brakes. In practical use, this structure is highly dependent on the operator's familiarity with the electric operating mechanism. Operators must strictly control the downward distance of the operating lever; otherwise, insufficient downward travel of the lower connector can damage the clutch mechanism, potentially leading to tooth breakage or even rendering the entire electric operating mechanism unusable, resulting in a poor user experience. Utility Model Content

[0005] To solve the above problems, this utility model provides a clutch device for the electric operating mechanism of a circuit breaker.

[0006] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a clutch device for an electric operating mechanism of a circuit breaker, comprising a motor, a lower connector connected to the end of the motor output shaft, an upper connector connected to the lower connector, and a rotating shaft jointly mounted on the upper connector and the lower connector. A T-shaped shaft is installed on the upper end of the inner wall of the lower connector, a support spring is installed on the bottom surface of the lower connector, an operating handle is slidably disposed on the inner wall of the rotating shaft, and a limiting component for limiting the operating handle is provided on the rotating shaft.

[0007] By adopting the above technical solution, when the operator needs to electrically control the opening and closing of the clutch, the lower connector engages with the upper connector under the action of the support spring. The operator needs to turn on the motor, which will cause the output shaft of the motor to rotate, thereby causing the lower connector to rotate with the output shaft of the motor, and then causing the upper connector and the shaft to rotate, thus realizing the opening and closing of the clutch. When the operator needs to manually operate the circuit breaker, in order to prevent the motor from interfering with the rotation of the shaft, the operator needs to separate the lower connector from the upper connector. At this time, the operator needs to connect the second slider with the second slide groove, which will connect the operating handle with the upper end of the shaft. Then, the operator only needs to press down on the operating handle, which will cause the T-shaped shaft to move downward under the action of the operating handle, thereby causing the lower connector to move downward with the T-shaped shaft and separate from the upper connector. Furthermore, the operator only needs to open the limit component to keep the operating handle stable, thereby keeping the lower connector separated from the upper connector. At this time, the operator only needs to rotate the operating handle to make the shaft rotate with the operating handle and keep the lower connector stationary, thereby reducing the probability of the motor interfering with the rotation of the shaft.

[0008] Furthermore, the upper surface of the rotating shaft has two symmetrical first sliding grooves. The limiting component includes two first sliders that are slidably disposed in the two first sliding grooves and a limiting device disposed on the rotating shaft for limiting the first sliders. Both first sliders are fixed to the side wall of the operating handle.

[0009] Furthermore, two symmetrical second sliding grooves are formed on the upper surface of the rotating shaft, and a second slider is slidably disposed in each of the two second sliding grooves. Both second sliders are fixed to the side wall of the operating handle.

[0010] By adopting the above technical solution, when the operator needs to manually drive the rotating shaft, the operator needs to connect the operating handle to the upper end of the rotating shaft, which connects the second slider to the second slide groove. Then, the operator needs to press down on the operating handle, causing the first slider to move downwards with the operating handle, thus connecting the first slider to the first slide groove. When the first slider presses against the inner bottom wall of the first slide groove, the lower connector separates from the upper connector. At this point, the operator only needs to activate the limiting device to block the first slider, thereby stabilizing the first slider and the operating handle, and thus keeping the lower connector separated from the upper connector.

[0011] Furthermore, a rotating groove is provided on the upper end of the side wall of the rotating shaft, and an arc-shaped groove communicating with the two first sliding grooves is provided on the inner wall of the rotating groove. The limiting device includes an annular plate rotatably disposed in the rotating groove and two arc-shaped pieces slidably disposed in the two arc-shaped grooves in sequence. Both arc-shaped pieces are fixed to the inner wall of the annular plate.

[0012] By adopting the above technical solution, when the first slider is pressed against the inner bottom wall of the first slide groove, the operator only needs to rotate the annular plate to make the two arc-shaped pieces rotate with the annular plate. This allows the two arc-shaped pieces to connect with the two first slide grooves respectively under the action of the annular plate, thereby blocking the two first sliders respectively and keeping the operating handle stable.

[0013] Furthermore, silicone sheets are mounted on the bottom surfaces of both first sliders.

[0014] Furthermore, the sidewalls of the annular plate are provided with anti-slip pads to reduce the difficulty for workers to rotate the annular plate.

[0015] By adopting the above technical solution, the anti-slip pad reduces the difficulty for workers to rotate the ring plate, thereby improving the user experience.

[0016] Furthermore, the bottom surface of the second slider is flush with the bottom surface of the operating handle.

[0017] Furthermore, the length of the upper surface of the second slider is greater than the length of the upper surface of the first slider.

[0018] By adopting the above technical solution, the difficulty for workers to judge the first slide rail and the second slide rail is reduced, thereby reducing the difficulty for workers to align the first slide rail and the first slider, and thus reducing the difficulty of operation for workers.

[0019] In summary, this utility model has the following beneficial effects: 1. In this application, when the operator needs to electrically control the opening and closing of the clutch, the lower connector engages with the upper connector under the action of the support spring. The operator needs to turn on the motor, which rotates the output shaft of the motor, causing the lower connector to rotate with the output shaft, and thus the upper connector rotates with the shaft, thereby achieving the opening and closing of the clutch. When the operator needs to manually operate the circuit breaker, to prevent the motor from interfering with the rotation of the shaft, the operator needs to separate the lower connector from the upper connector. At this time, the operator needs to connect the second slider with the second slide groove, which connects the operating handle with the upper end of the shaft. Subsequently, the operator only needs to press down on the operating handle to move the T-shaped shaft downward under the action of the operating handle, thereby causing the lower connector to move downward with the T-shaped shaft and separate from the upper connector. Furthermore, the operator only needs to open the limit component to keep the operating handle stable, thus keeping the lower connector separated from the upper connector. At this time, the operator only needs to rotate the operating handle to make the shaft rotate with the operating handle and keep the lower connector stationary, thereby reducing the probability of the motor interfering with the rotation of the shaft. 2. In this application, when the operator needs to manually drive the rotating shaft, the operator needs to connect the operating handle to the upper end of the rotating shaft, which connects the second slider to the second slide groove. Then, the operator needs to press down on the operating handle, which moves the first slider downwards, connecting it to the first slide groove. When the first slider abuts against the inner bottom wall of the first slide groove, the lower connector separates from the upper connector. At this point, the operator only needs to activate the limiting device to block the first slider, thus stabilizing the first slider and the operating handle, and keeping the lower connector separated from the upper connector. 3. In this application, when the first slider is pressed against the inner bottom wall of the first slide groove, the operator only needs to rotate the annular plate to make the two arc-shaped pieces rotate with the annular plate, so that the two arc-shaped pieces are connected to the two first slide grooves respectively under the action of the annular plate, thereby blocking the two first sliders respectively, so that the operating handle remains stable. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model; Figure 2 This is a schematic diagram of the lower connector and its connection structure according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the silicone sheet and its connection structure according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the T-shaped shaft and its connection structure according to an embodiment of the present invention; Figure 5This is a schematic diagram of the second slide groove and its connection structure according to an embodiment of the present utility model; Figure 6 This is a schematic diagram of the arc-shaped groove and its connection structure according to an embodiment of the present invention; Figure 7 This is a schematic diagram of the limiting device and its connection structure according to an embodiment of the present utility model.

[0021] In the diagram: 1. Motor; 11. Lower connector; 2. Upper connector; 21. Rotating shaft; 3. T-shaped shaft; 31. Support spring; 4. Operating handle; 41. First slide groove; 5. Limiting component; 51. First slider; 52. Rotating groove; 53. Arc groove; 6. Limiting device; 61. Annular plate; 62. Arc plate; 7. Second slide groove; 71. Second slider; 8. Silicone sheet; 9. Anti-slip sheet. Detailed Implementation

[0022] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0023] like Figure 1-7 As shown in the figure, this application discloses a clutch device for an electric operating mechanism of a circuit breaker, including a motor 1, a lower connector 11, an upper connector 2, a rotating shaft 21, a T-shaped shaft 3, a support spring 31, an operating handle 4, a limiting assembly 5, a second slider 71, a silicone sheet 8, and an anti-slip sheet 9. The lower connector 11 is connected to the output shaft end of the motor 1, and the upper connector 2 is connected to the lower connector 11. The rotating shaft 21 is mounted on both the upper connector 2 and the lower connector 11, and the T-shaped shaft 3 is mounted on the upper end of the inner wall of the lower connector 11. One end of the support spring 31 is mounted on the bottom surface of the lower connector 11, and the operating handle 4 is slidably disposed on the inner wall of the rotating shaft 21.

[0024] The upper surface of the rotating shaft 21 has two symmetrical first sliding grooves 41. A limiting component 5 is disposed on the rotating shaft 21 to limit the operation handle 4. The limiting component 5 includes a first slider 51 and a limiting device 6. The first slider 51 is a block structure, and two first sliders 51 are provided and slidably disposed in the two first sliding grooves 41 in sequence. Both first sliders 51 are fixed to the side wall of the operation handle 4. The upper surface of the rotating shaft 21 has two symmetrical second sliding grooves 7. The second sliders 71 are block structures, and two second sliders 71 are provided and slidably disposed in the two second sliding grooves 7 in sequence. Both second sliders 71 are fixed to the side wall of the operation handle 4.

[0025] When the operator needs to manually drive the rotating shaft 21, the operator needs to connect the operating handle 4 to the upper end of the rotating shaft 21, which will connect the second slider 71 to the second slide groove 7. Then, the operator needs to press down on the operating handle 4, which will cause the first slider 51 to move downwards with the operating handle 4, thereby connecting the first slider 51 to the first slide groove 41. When the first slider 51 presses against the inner bottom wall of the first slide groove 41, the lower connector 11 separates from the upper connector 2. At this time, the operator only needs to activate the limiting device 6 to block the first slider 51, thereby stabilizing the first slider 51 and the operating handle 4, and thus keeping the lower connector 11 separated from the upper connector 2.

[0026] A rotating groove 52 is provided on the upper end of the side wall of the rotating shaft 21. An arc-shaped groove 53 communicating with the two first sliding grooves 41 is provided on the inner wall of the rotating groove 52. A limiting device 6 is provided on the rotating shaft 21 to limit the first slider 51. The limiting device 6 includes an annular plate 61 and an arc-shaped piece 62. The annular plate 61 is a circular annular plate 61 structure and is rotatably disposed in the rotating groove 52. The arc-shaped piece 62 is a piece-shaped structure, and two arc-shaped pieces 62 are provided and are slidably disposed in the two arc-shaped grooves 53 in sequence. Both arc-shaped pieces 62 are fixed to the inner wall of the annular plate 61.

[0027] When the first slider 51 presses against the inner bottom wall of the first slide groove 41, the operator only needs to rotate the annular plate 61 to make the two arc-shaped pieces 62 rotate with the annular plate 61. Thus, the two arc-shaped pieces 62 are connected to the two first slide grooves 41 respectively under the action of the annular plate 61, thereby blocking the two first sliders 51 respectively, so that the operating handle 4 remains stable.

[0028] The silicone sheet 8 is a sheet-like structure, and two silicone sheets 8 are sequentially installed on the bottom surfaces of the two first sliders 51. The anti-slip sheet 9 is a sheet-like structure, and multiple anti-slip sheets 9 are sequentially arranged on the side wall of the annular plate 61 to reduce the difficulty for operators to rotate the annular plate 61. The anti-slip sheets 9 reduce the difficulty for operators to rotate the annular plate 61, thereby improving the user experience.

[0029] To reduce the difficulty for workers to align the second slider 71 with the second slide 7, the bottom surface of the second slider 71 is flush with the bottom surface of the operating handle 4.

[0030] To reduce the difficulty of operation for workers, the length of the upper surface of the second slider 71 is greater than the length of the upper surface of the first slider 51. This setting reduces the difficulty for workers to judge the first slide groove 41 and the second slide groove 7, thereby reducing the difficulty for workers to align the first slide groove 41 with the first slider 51, and thus reducing the difficulty of operation for workers.

[0031] The operating principle of the clutch device for the electric operating mechanism of the circuit breaker in this embodiment is as follows: When the operator needs to electrically control the opening and closing of the clutch, the lower connector 11 is engaged with the upper connector 2 under the action of the support spring 31. The operator needs to turn on the motor 1, which will cause the output shaft of the motor 1 to rotate, thereby causing the lower connector 11 to rotate with the output shaft of the motor 1, and then causing the upper connector 2 and the rotating shaft 21 to rotate, thus realizing the opening and closing of the clutch. When the operator needs to manually operate the circuit breaker, in order to prevent the motor from interfering with the rotation of the rotating shaft 21, the operator needs to separate the lower connector 11 from the upper connector 2. At this time, the operator needs to connect the second slider 71 with the second slide groove 7, which will connect the operating handle 4 with the upper end of the rotating shaft 21. Then, the operator only needs to press down on the operating handle 4, which will cause the T-shaped shaft 3 to move downward under the action of the operating handle 4, thereby causing the lower connector 11 to move downward with the T-shaped shaft 3 and separate from the upper connector 2. Furthermore, the operator only needs to open the limit component 5 to keep the operating handle 4 stable, thereby keeping the lower connector 11 in a state of separation from the upper connector 2. At this time, the operator only needs to turn the operating handle 4 to make the rotating shaft 21 rotate with the operating handle 4 and keep the lower connector 11 stationary, thereby reducing the probability of the motor interfering with the rotation of the rotating shaft 21.

[0032] The above description is merely a preferred embodiment of this utility model. The protection scope of this utility model is not limited to the above embodiments. All technical solutions falling within the scope of this utility model's concept are protected. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

Claims

1. A clutch device for an electric operating mechanism of a circuit breaker, comprising a motor (1), a lower connector (11) connected to the end of the output shaft of the motor (1), an upper connector (2) connected to the lower connector (11), and a rotating shaft (21) mounted on both the upper connector (2) and the lower connector (11), characterized in that: A T-shaped shaft (3) is installed on the upper end of the inner wall of the lower connector (11), a support spring (31) is installed on the bottom surface of the lower connector (11), an operating handle (4) is slidably arranged on the inner wall of the rotating shaft (21), and a limiting component (5) for limiting the operating handle (4) is provided on the rotating shaft (21).

2. The clutch device for the electric operating mechanism of a circuit breaker according to claim 1, characterized in that: The upper surface of the rotating shaft (21) has two symmetrical first slide grooves (41). The limiting component (5) includes two first sliders (51) that are slidably disposed in the two first slide grooves (41) and a limiting device (6) disposed on the rotating shaft (21) for limiting the first sliders (51). Both first sliders (51) are fixed to the side wall of the operating handle (4).

3. The clutch device for the electric operating mechanism of a circuit breaker according to claim 2, characterized in that: The upper surface of the rotating shaft (21) has two symmetrical second slide grooves (7), and a second slider (71) is slidably arranged in each of the two second slide grooves (7). The two second sliders (71) are fixed to the side wall of the operating handle (4).

4. The clutch device for the electric operating mechanism of a circuit breaker according to claim 3, characterized in that: The upper side wall of the rotating shaft (21) is provided with a rotating groove (52), and the inner wall of the rotating groove (52) is provided with an arc-shaped groove (53) that communicates with the two first sliding grooves (41). The limiting device (6) includes an annular plate (61) rotatably disposed in the rotating groove (52) and two arc-shaped pieces (62) slidably disposed in the two arc-shaped grooves (53) in sequence. The two arc-shaped pieces (62) are fixed to the inner wall of the annular plate (61).

5. The clutch device for the electric operating mechanism of a circuit breaker according to claim 4, characterized in that: Silicone sheets (8) are mounted on the bottom surfaces of both first sliders (51).

6. The clutch device for the electric operating mechanism of a circuit breaker according to claim 5, characterized in that: The annular plate (61) is provided with anti-slip pads (9) on its side wall to reduce the difficulty for workers to rotate the annular plate (61).

7. The clutch device for the electric operating mechanism of a circuit breaker according to claim 6, characterized in that: The bottom surface of the second slider (71) is flush with the bottom surface of the operating handle (4).

8. The clutch device for the electric operating mechanism of a circuit breaker according to claim 7, characterized in that: The length of the upper surface of the second slider (71) is greater than the length of the upper surface of the first slider (51).

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