Electric operating mechanism of circuit breaker

Abstract

The utility model discloses an electric operation mechanism of a circuit breaker, which comprises a shell, a driving module and a sliding module, the driving module and the sliding module are arranged in the shell, operation axes of the driving module and the sliding module are relatively parallel, and the driving module comprises a driving motor, a gear set and a transmission disc. The driving motor transmits kinetic energy to the sliding module through the gear set and the transmission disc in sequence. The device further comprises a reversing assembly, the extending direction of a motor shaft of the driving motor is perpendicular to the rotating center of the gear set, and the driving motor transmits kinetic energy to the gear set through the reversing assembly. The bevel gear and straight gear combined gear train transmission is adopted, the position of the motor can be flexibly arranged, high power and high efficiency can be transmitted, and the transmission mechanism has the advantages of being small in occupied space, stable and reliable in transmission and small in noise and vibration.

Description

Technical Field

[0001] This utility model relates to the field of circuit breaker technology, and in particular to an electrical operating mechanism for a circuit breaker. Background Technology

[0002] Circuit breakers, as electrical distribution devices, are capable of connecting, carrying, and disconnecting the main circuit current, playing a vital role in power generation, transmission, distribution, and supply. Electric operating mechanisms, as specialized accessories for circuit breakers, enable remote electric closing, opening, and re-closing of circuit breakers to achieve centralized and automatic control of the power transmission and distribution network, making circuit breaker switching more reliable, less labor-intensive, and safer.

[0003] The existing electric operating mechanism has an unreasonable structural design, suffering from defects such as complex structure, unreliable performance, and short service life. Currently, the gear set of the electric operating mechanism is directly driven by a high-speed motor, and the gear set structure layout is relatively arbitrary. Moreover, the gears used in the gear set are all spur gears, which not only fixes the motor's installation position, making it unable to be flexibly set up, but also results in high noise, poor transmission stability, and low transmission efficiency when the spur gear connected to the high-speed motor transmits power to the adjacent transmission gear. Therefore, this structure has serious shortcomings. Utility Model Content

[0004] The purpose of this utility model is to provide an electrical operating mechanism for a circuit breaker. This utility model adopts a gear transmission system combining bevel gears and spur gears, which can flexibly set the motor position, transmit larger power and efficiency, and has the advantages of small space occupation, smooth and reliable transmission, and low noise and vibration.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an electrical operating mechanism for a circuit breaker, comprising a housing, a drive module and a sliding module disposed within the housing, wherein the drive module and the sliding module are arranged such that their operating axes are relatively parallel; the drive module includes a drive motor, a gear set and a transmission disk, wherein the drive motor transmits kinetic energy to the sliding module sequentially through the gear set and the transmission disk; it also includes a reversing component, wherein the extension direction of the motor shaft of the drive motor is perpendicular to the rotation center of the gear set, and the drive motor transmits kinetic energy to the gear set through the reversing component.

[0006] The present invention is further configured such that the reversing assembly includes a driving bevel gear, a driven bevel gear, and a transmission spur gear. The driving bevel gear is linked and mounted on the motor shaft of the drive motor. The driven bevel gear and the transmission spur gear are mounted on the housing through a common rotating shaft, and the driven bevel gear and the transmission spur gear rotate synchronously. The driving bevel gear and the driven bevel gear mesh with each other.

[0007] The present invention is further configured such that the gear set includes a first gear, a second gear, and a third gear rotatably mounted on the housing via a rotating shaft, the first gear, the second gear, and the third gear meshing and transmitting power sequentially, and the first gear meshing with the transmission spur gear; the transmission disc is rotatably mounted on the housing via an operating lever, and a fourth gear is linked to the operating lever, the fourth gear meshing with the third gear.

[0008] The present invention is further configured such that the sliding module includes a guide rail and a slider, the guide rail is vertically disposed on the outer shell, the slider is slidably disposed on the guide rail along the extension direction of the guide rail, the transmission disk is linked to the slider, and when the transmission disk rotates, the slider slides along the extension direction of the guide rail.

[0009] The present invention is further configured such that the number of guide rails is at least two, the guide rails are arranged in parallel, and the slider is provided with a guide groove that extends vertically and cooperates with the guide rails.

[0010] The present invention is further configured such that the transmission disc is provided with a lever, the slider is provided with an input groove and an output groove, the input groove extends laterally, and the lever extends into the input groove and cooperates with the inner wall of the input groove, and the output groove is used to cooperate with the operating handle of the circuit breaker.

[0011] The present invention is further configured such that the slider is made of plastic, and a metal reinforcing member is installed on the slider at the position corresponding to the input slot, and the metal reinforcing member has an input hole for cooperating with the dial block.

[0012] The present invention is further configured such that the metal reinforcement is connected to the slider by a plurality of fasteners.

[0013] The present invention is further configured such that the metal reinforcing member is provided with a plurality of positioning holes, and the slider is provided with a plurality of positioning protrusions that cooperate with the positioning holes.

[0014] The present invention is further configured such that the metal reinforcing member has a U-shaped structure, the metal reinforcing member is disposed close to three sides of the slider, and the slider is provided with reinforcing ribs that abut against the upper and lower ends of the metal reinforcing member.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] I. Gear transmission systems that combine bevel gears and spur gears have the following advantages:

[0017] 1. It can change the transmission direction of the motor and can flexibly and reasonably set the motor position to reduce the product size;

[0018] 2. Bevel gear drives can withstand large torques and transmit greater power and efficiency;

[0019] 3. Bevel gear transmissions have a relatively compact structure and occupy less space;

[0020] 4. The bevel gear transmission is smooth and reliable, with low noise and vibration.

[0021] II. The slider adopts a combination structure of plastic and metal parts, which has the following advantages:

[0022] 1. The metal reinforcing parts of the slider can withstand large torques and have strong wear resistance;

[0023] 2. The slider itself is made of plastic, which has good design flexibility and can be designed to match the shape and stroke of different circuit breaker switch handles.

[0024] 3. The slider itself and the metal reinforcement are fastened with standard parts, which can be easily disassembled and replaced. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the external structure of a circuit breaker.

[0026] Figure 2 This is a first-view structural schematic diagram of the entire utility model;

[0027] Figure 3 This is a second view structural diagram of the entire utility model;

[0028] Figure 4 This is a schematic diagram of the slider module of this utility model;

[0029] Figure 5 This is a schematic diagram of the mating structure of the module and the metal reinforcement of this utility model;

[0030] Figure 6 for Figure 5 Exploded view of the structure.

[0031] In the diagram: 1. Housing; 2. Drive module; 3. Sliding module; 4. Drive motor; 5. Gear set; 6. Transmission disc; 7. Reversing assembly; 8. Driving bevel gear; 9. Driven bevel gear; 10. Transmission spur gear; 11. First gear; 12. Second gear; 13. Third gear; 14. Operating lever; 15. Fourth gear; 16. Guide rail; 17. Slider; 18. Guide groove; 19. Toggle block; 20. Input groove; 21. Output groove; 22. Metal reinforcement; 23. Input hole; 24. Fastener; 25. Positioning hole; 26. Positioning protrusion; 27. Reinforcing rib. Detailed Implementation

[0032] 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.

[0033] Example: As attached Figures 1-6 The circuit breaker's operating mechanism shown includes a housing 1, a drive module 2 and a sliding module 3 disposed within the housing 1. The drive module 2 and the sliding module 3 are positioned such that their operating axes are relatively parallel. The drive module 2 includes a drive motor 4, a gear set 5, and a transmission disk 6. The drive motor 4 transmits kinetic energy to the sliding module 3 sequentially through the gear set 5 and the transmission disk 6. The operating mechanism also includes a reversing component 7. The motor shaft of the drive motor 4 extends perpendicularly to the rotation center of the gear set 5. The drive motor 4 transmits kinetic energy to the gear set 5 through the reversing component 7. That is, the drive motor 4 can be vertically mounted, which is more flexible in installation and smaller in overall size compared to horizontal placement.

[0034] As attached Figure 2 As shown, the reversing assembly 7 includes a driving bevel gear 8, a driven bevel gear 9, and a transmission spur gear 10. The driving bevel gear 8 is mounted directly or via a coupling on the motor shaft of the drive motor 4. The driven bevel gear 9 and the transmission spur gear 10 are mounted on the housing 1 via a common shaft and rotate synchronously. The driven bevel gear 9 and the transmission spur gear 10 can be an integral structure. The driving bevel gear 8 and the driven bevel gear 9 mesh to achieve a change in transmission direction. Bevel gear transmission can not only withstand large torques and transmit large power and efficiency, but also has a relatively compact structure, occupying less space. In addition, bevel gear transmission is smooth and reliable, with low noise and vibration.

[0035] As attached Figure 2 As shown, the gear set 5 includes a first gear 11, a second gear 12, and a third gear 13 rotatably mounted on the housing 1 via a rotating shaft. The first gear 11, the second gear 12, and the third gear 13 mesh sequentially for transmission. The housing 1 has a positioning shaft hole for inserting the gear shaft, and the first gear 11 meshes with the transmission spur gear 10. The transmission disk 6 is rotatably mounted on the housing 1 via an operating rod 14, and a fourth gear 15 is linked to the operating rod 14. The fourth gear 15 rotates synchronously with the transmission disk 6, and the fourth gear 15 meshes with the third gear 13 to realize the rotation of the transmission disk 6.

[0036] The first gear 11 includes a first large gear and a first small gear arranged coaxially; the second gear 12 includes a second large gear and a second small gear arranged coaxially; and the third gear 13 includes a third large gear and a third small gear arranged coaxially. The transmission spur gear 10 meshes with the first large gear, the first small gear meshes with the second large gear, the second small gear meshes with the third large gear, and the third small gear meshes with the fourth gear 15. This allows for efficient transmission of kinetic energy and stable deceleration output.

[0037] As attached Figures 3-6 As shown, the sliding module 3 includes a guide rail 16 and a slider 17. The guide rail 16 is vertically arranged on the outer shell, and the slider 17 is slidably arranged on the guide rail 16 along the extension direction of the guide rail 16. The transmission disk 6 is linked to the slider 17, and when the transmission disk 6 rotates, the slider 17 slides along the extension direction of the guide rail 16.

[0038] As attached Figures 3-6 As shown, there are at least two guide rails 16, and the guide rails 16 are arranged in parallel. The guide rails 16 can be designed as cylindrical rods. The slider 17 is provided with guide grooves 18 that extend vertically and cooperate with the guide rails 16. In this embodiment, there are two guide rails 16. The guide grooves 18 are arranged on both sides of the slider 17 and have a U-shaped cross-section. The structure is simple and the slider 17 slides stably and reliably.

[0039] As attached Figures 3-6 As shown, the transmission disc 6 is equipped with a lever 19. The transmission disc 6 can be designed as a fan-shaped structure. The lever 19 is located near the outer peripheral edge of the transmission disc 6 and is cylindrical. The slider 17 is equipped with an input slot 20 and an output slot 21. The input slot 20 extends laterally, i.e., it is a straight slot, and the lever 19 extends into the input slot 20 and cooperates with the inner wall of the input slot 20. The output slot 21 is used to cooperate with the operating handle of the circuit breaker. That is, when the transmission disc 6 rotates in one direction, the lever 19 pushes the slider 17, causing the slider 17 to move up and down reciprocally, thereby driving the operating handle to move up and down reciprocally, realizing the closing or opening of the circuit breaker.

[0040] As attached Figures 3-6 As shown, the slider 17 is made of plastic. A metal reinforcing member 22 (which can be made of iron) is installed on the slider 17 at the position corresponding to the input slot 20. The metal reinforcing member 22 has an input hole 23 for cooperating with the toggle block 19. The toggle block 19 cooperates with the inner wall of the input hole 23. The metal reinforcing member 22 of the slider 17 can withstand large torques and has strong wear resistance. Furthermore, the slider 17 itself is made of plastic, which provides good design flexibility and allows for corresponding design to accommodate different circuit breaker switch handle shapes and strokes.

[0041] As attached Figures 3-6As shown, the metal reinforcement 22 is connected to the slider 17 by a plurality of fasteners 24. The fasteners 24 can be screws, which are standard parts and are easy to disassemble and replace.

[0042] As attached Figures 3-6 As shown, the metal reinforcement 22 has multiple positioning holes 25, and the slider 17 has multiple positioning protrusions 26 that mate with the positioning holes 25. The positioning protrusions 26 can be semi-cylindrical in shape, and the slider 17 has clearance holes at the inner ends of the positioning holes 25 to facilitate the insertion of tools to pry out the metal reinforcement 22. Positioning the metal reinforcement 22 not only facilitates the alignment and installation of the fasteners 24, but also makes the installation structure more robust and reliable.

[0043] As attached Figures 3-6 As shown, the metal reinforcing member 22 has a U-shaped structure and is disposed close to three sides of the slider 17. The slider 17 is provided with reinforcing ribs 27 that abut against the upper and lower ends of the metal reinforcing member 22. This design can effectively improve the stability of the installation of the metal reinforcing member 22.

Claims

1. An electrical operating mechanism for a circuit breaker, comprising a housing (1), a drive module (2) disposed within the housing (1), and a sliding module (3), wherein the drive module (2) and the sliding module (3) are arranged such that their operating axes are relatively parallel, the drive module (2) comprising a drive motor (4), a gear set (5), and a transmission disk (6), wherein the drive motor (4) transmits kinetic energy to the sliding module (3) sequentially through the gear set (5) and the transmission disk (6); characterized in that: It also includes a commutation assembly (7), the motor shaft of the drive motor (4) extends perpendicularly to the rotation center of the gear set (5), and the drive motor (4) transmits kinetic energy to the gear set (5) through the commutation assembly (7).

2. The electrical operating mechanism of the circuit breaker according to claim 1, characterized in that: The reversing assembly (7) includes a driving bevel gear (8), a driven bevel gear (9), and a transmission spur gear (10). The driving bevel gear (8) is linked and mounted on the motor shaft of the drive motor (4). The driven bevel gear (9) and the transmission spur gear (10) are mounted on the housing (1) through a common rotating shaft, and the driven bevel gear (9) and the transmission spur gear (10) rotate synchronously. The driving bevel gear (8) and the driven bevel gear (9) mesh with each other.

3. The electrical operating mechanism of the circuit breaker according to claim 2, characterized in that: The gear set (5) includes a first gear (11), a second gear (12), and a third gear (13) rotatably mounted on the housing (1) via a rotating shaft. The first gear (11), the second gear (12), and the third gear (13) mesh and drive in sequence. The first gear (11) meshes with the transmission spur gear (10). The transmission disk (6) is rotatably mounted on the housing (1) via an operating rod (14). A fourth gear (15) is linked to the operating rod (14). The fourth gear (15) meshes with the third gear (13).

4. The electrical operating mechanism of the circuit breaker according to claim 1, characterized in that: The sliding module (3) includes a guide rail (16) and a slider (17). The guide rail (16) is vertically arranged on the outer shell. The slider (17) can be slidably arranged on the guide rail (16) along the extension direction of the guide rail (16). The transmission disk (6) is linked to the slider (17), and when the transmission disk (6) rotates, the slider (17) slides along the extension direction of the guide rail (16).

5. The electrical operating mechanism of the circuit breaker according to claim 4, characterized in that: The number of guide rails (16) is at least two, and the guide rails (16) are arranged in parallel. The slider (17) is provided with a guide groove (18) that extends vertically and cooperates with the guide rails (16).

6. The electrical operating mechanism of the circuit breaker according to claim 4, characterized in that: The transmission disc (6) is provided with a toggle block (19), and the slider (17) is provided with an input groove (20) and an output groove (21). The input groove (20) extends laterally, and the toggle block (19) extends into the input groove (20) and cooperates with the inner wall of the input groove (20). The output groove (21) is used to cooperate with the operating handle of the circuit breaker.

7. The electrical operating mechanism of the circuit breaker according to claim 6, characterized in that: The slider (17) is made of plastic. A metal reinforcing member (22) is installed on the slider (17) at the position corresponding to the input slot (20). The metal reinforcing member (22) has an input hole (23) for cooperating with the dial (19).

8. The electrical operating mechanism of the circuit breaker according to claim 7, characterized in that: The metal reinforcement (22) is connected to the slider (17) by a plurality of fasteners (24).

9. The electrical operating mechanism of the circuit breaker according to claim 8, characterized in that: The metal reinforcement (22) is provided with a plurality of positioning holes (25), and the slider (17) is provided with a plurality of positioning protrusions (26) that cooperate with the positioning holes (25).

10. The electrical operating mechanism of the circuit breaker according to claim 7, characterized in that: The metal reinforcement (22) has a U-shaped structure. The metal reinforcement (22) is closely attached to the three sides of the slider (17), and the slider (17) is provided with reinforcing ribs (27) that abut against the upper and lower ends of the metal reinforcement (22).

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