A circuit breaker operating mechanism
By designing a circuit breaker operating mechanism, the safe and stable opening and closing operation of the circuit breaker is achieved by utilizing transmission components and elastic elements. This solves the problems of unsafe operation and misoperation in the existing technology, ensures accurate trip indication, and improves the reliability and safety of operation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XINGJI ELECTRIC APPLIANCE CO LTD
- Filing Date
- 2025-07-16
- Publication Date
- 2026-07-21
AI Technical Summary
The opening and closing operations of existing circuit breakers are unsafe, laborious, and prone to misoperation. When tripped, the cabinet door operating handle cannot be rotated to the tripping indication position.
Design a circuit breaker operating mechanism, including a mounting housing, a rotating shaft, an operating plate, a transmission assembly, and an elastic element. The transmission assembly drives the operating plate to move, and the elastic element makes the drive part fit against the circuit breaker handle to achieve accurate opening and closing operations and tripping display.
It enables safe and stable opening and closing operations of the circuit breaker, ensures accurate position indication of the external handle when tripping, facilitates user confirmation of the circuit breaker status, and improves the reliability and safety of operation.
Smart Images
Figure CN224537025U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of circuit breaker structure technology, and in particular to a manual operating mechanism that satisfies the circuit breaker tripping requirement. Background Technology
[0002] The opening and closing of circuit breakers on switch cabinets is usually done manually. This method is not only unsafe, but also very laborious. In open environments, it is easy to cause misoperation.
[0003] The opening and closing of circuit breakers on switch cabinets is usually done using an operating handle. However, due to factors such as the small tripping force of the circuit breaker, the interlocking resistance inside the drawer, and the lack of offset of the installation center, this method can easily cause the cabinet door operating handle to be in the closed position when the circuit breaker trips, making it impossible to rotate to the tripping indication position. Utility Model Content
[0004] The purpose of this utility model is to provide a circuit breaker operating mechanism that enables convenient and safe operation of the circuit breaker, as well as tripping display, thus meeting the requirements of high operational safety and stability.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a circuit breaker operating mechanism for opening and closing the handle on a circuit breaker, comprising a mounting housing, a rotating shaft, an operating plate, a transmission assembly, and an elastic element. The rotating shaft is rotatably mounted on the mounting housing, and the operating plate is movably disposed within the mounting housing. The operating plate is connected to the rotating shaft via the transmission assembly. The operating plate is provided with a driving part for cooperating with the handle on the circuit breaker. When the rotating shaft drives the operating plate to move via the transmission assembly, the operating plate has a first position for opening the circuit breaker by moving the handle in a first direction, and a second position for closing the circuit breaker by moving the handle in a second direction. The operating plate is connected to the mounting housing via the elastic element, so that the driving part can fit against the handle of the circuit breaker.
[0006] By adopting the above technical solution, the rotating shaft is driven by the transmission component to move the operating plate through the rotation. The drive part on the operating plate cooperates with the handle on the circuit breaker to realize the opening and closing of the circuit breaker. The use of elastic elements allows the drive part of the operating plate to fit against the handle of the circuit breaker, thereby ensuring the accuracy of the rotation position of the shaft when the circuit breaker handle is released. This, in turn, ensures the accurate indication position of the handle outside the cabinet, making it easy for users to confirm the status of the circuit breaker drawer. The effect is good and it is worth promoting and applying.
[0007] The present invention is further configured such that a pair of parallel pressure plates are installed on the mounting shell, and sliding channels are provided between the two pressure plates and the mounting shell, and the two sides of the operating plate are respectively slidably disposed in the corresponding sliding channels.
[0008] By adopting the above technical solution, the operating plate is guided by the sliding channel, enabling it to perform stable directional movements and ensuring the reliability of the circuit breaker's opening and closing operations.
[0009] The present invention is further configured such that the transmission component includes a transmission gear, the transmission gear is circumferentially mounted on the rotating shaft, and a plurality of linkage holes for cooperating with the transmission gear are distributed on one side of the operating plate along the movement direction of the operating plate.
[0010] By adopting the above technical solution, rotary motion is converted into linear motion through the meshing of teeth and holes, which has the advantages of stable and reliable transmission structure and is not prone to slippage.
[0011] The present invention is further configured such that the driving part includes a linkage opening disposed on the operating plate, and the handle of the circuit breaker is inserted into the linkage opening.
[0012] By adopting the above technical solution, the linkage between the two is achieved by setting a linkage opening on the control panel and plugging it into the circuit breaker handle. The linkage structure is very simple and reliable, which is conducive to assembly and production.
[0013] The present invention is further configured such that two V-shaped paddles are symmetrically arranged at the upper and lower edges of the linkage opening corresponding to the operation plate.
[0014] By adopting the above technical solution, the purpose of setting the V-shaped lever is that the inclined surface can reduce the contact between the cross-section and the circuit breaker handle, prevent the circuit breaker handle from being scratched during the opening and closing process, and at the same time make it easy to slip into the circuit breaker handle to strengthen the operating plate and prevent deformation during opening and closing.
[0015] The present invention is further configured such that the elastic element includes two tension springs, which are symmetrically arranged on both sides of the operating plate, and one end of the tension spring is connected to the operating plate, and the other end of the tension spring is connected to the mounting shell.
[0016] By adopting the above technical solution, when the circuit breaker is closed, the tension spring stores energy. If the circuit breaker trips unexpectedly, the tension spring assists the circuit breaker in releasing energy, ensuring that the operating mechanism shaft rotates and drives the external handle to the trip indication position.
[0017] The present invention is further configured such that a square hole for inserting a square shaft is provided axially at the center of the rotating shaft.
[0018] By adopting the above technical solution, a square hole is set on the rotating shaft, which can be used to insert a square shaft, so as to achieve the effect of the square shaft rotating to drive the rotating shaft to rotate.
[0019] The present invention is further provided that at least one threaded hole extending radially along the shaft is provided on the side of the rotating shaft, and a locking bolt is threadedly connected to the threaded hole.
[0020] By adopting the above technical solution, tightening the locking bolt will allow the inner end of the locking bolt to press the square shaft against the square hole of the rotating shaft, thereby preventing the square shaft from moving longitudinally or falling off.
[0021] The present invention is further configured such that the mounting housing has a shaft hole, the rotating shaft passes through the shaft hole, and the outer periphery of the rotating shaft is provided with a limiting flange for fitting with one side of the mounting housing and a retaining spring for fitting with the other side of the mounting housing.
[0022] By adopting the above technical solution, the axial limit of the rotating shaft can be achieved, so that it can only rotate circumferentially and will not produce axial displacement. Attached Figure Description
[0023] Figure 1 This is a perspective view of the entire utility model; Figure 2 This is a rear view of the entire utility model; Figure 3 This is a first sectional view of the entire utility model. Figure 4 This is a second sectional view of the entire utility model. Figure 5 This is a schematic diagram of the structure of the control panel of this utility model; Figure 6 This is a schematic diagram of the circuit breaker. Figure 7 This is a schematic diagram of the structure of this utility model installed on a circuit breaker.
[0024] In the diagram: 1. Circuit breaker; 2. Handle; 3. Mounting housing; 4. Shaft; 5. Operating plate; 6. Transmission assembly; 7. Elastic element; 8. Drive unit; 9. Pressure plate; 10. Sliding channel; 11. Transmission gear; 12. Linkage hole; 13. Linkage opening; 14. Paddle; 15. Tension spring; 16. Square hole; 17. Threaded hole; 18. Locking bolt; 19. Shaft hole; 20. Limiting flange; 21. Snap ring. Detailed Implementation
[0025] 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.
[0026] Example: As attached Figures 1-7 The diagram illustrates a circuit breaker operating mechanism for opening and closing a handle 2 on a circuit breaker 1. It includes a mounting housing 3, a rotating shaft 4, an operating plate 5, a transmission assembly 6, and an elastic element 7. The mounting housing 3 is screwed onto the outer casing of the circuit breaker 1. The rotating shaft 4 is rotatably mounted on the mounting housing 3. The operating plate 5 is movably disposed within the mounting housing 3 and is connected to the rotating shaft 4 via the transmission assembly 6. The operating plate 5 is provided with a mechanism for engaging the handle 2 on the circuit breaker 1. The drive unit 8, in conjunction with the rotating shaft 4, drives the operating plate 5 via the transmission assembly 6. The operating plate 5 has a first position where the circuit breaker 1 handle 2 is moved in a first direction to open the circuit breaker 1, and a second position where the circuit breaker 1 handle 2 is moved in a second direction to close the circuit breaker 1. The first and second directions are the directions driving the circuit breaker 1 handle 2 to open and close. The operating plate 5 is connected to the mounting housing 3 via an elastic element 7, allowing the drive unit 8 to fit against the handle 2 of the circuit breaker 1. By rotating the shaft 4, the transmission assembly 6 drives the operating plate 5 to move. The drive unit 8 on the operating plate 5 engages with the handle 2 on the circuit breaker 1 to open and close the circuit breaker 1. The elastic element 7 ensures that the drive unit 8 of the operating plate 5 fits against the handle 2 of the circuit breaker 1, thus ensuring the accurate rotation position of the rotating shaft 4 when the circuit breaker 1 handle 2 is released. This results in accurate indication of the external handle position, facilitating user confirmation of the circuit breaker 1 drawer status. This effective method is worthy of widespread application.
[0027] As attached Figure 2 and attached Figure 3 As shown, a pair of parallel pressure plates 9 are mounted on the mounting housing 3 by screws, and sliding channels 10 are provided between the two pressure plates 9 and the mounting housing 3. The operating plate 5 is slidably disposed in the corresponding sliding channels 10 on both sides. The sliding channels 10 guide the operating plate 5, enabling it to move stably and ensuring the reliability of the opening and closing operation of the circuit breaker 1.
[0028] As attached Figure 3 , 4As shown in Figure 5, the transmission assembly 6 includes a transmission gear 11, which is circumferentially mounted on the rotating shaft 4. Specifically, the inner cross-section of the rotating shaft 4 is non-circular. The transmission gear 11 has a non-circular hole that mates with the inner end of the rotating shaft 4. Multiple linkage holes 12 for mates with the transmission gear 11 are distributed along the movement direction of the operating plate 5 on one side. Through the gear-hole mating mechanism, rotational motion is converted into linear motion, offering advantages such as a stable and reliable transmission structure and resistance to slippage.
[0029] Alternatively, a rack that meshes with the transmission gear 11 can be provided on the operating plate 5.
[0030] As attached Figure 5 and attached Figure 7 As shown, the drive unit 8 includes a linkage opening 13 on the operating plate 5, and the handle 2 of the circuit breaker 1 is inserted into the linkage opening 13. The linkage between the two is achieved by setting the linkage opening 13 on the operating plate 5 and engaging it with the handle 2 of the circuit breaker 1. The engagement structure is very simple and reliable, which is conducive to assembly and production.
[0031] As attached Figure 5 As shown, the operating plate 5 is symmetrically provided with two V-shaped paddles 14 at the upper and lower edges corresponding to the linkage opening 13. The purpose of setting the V-shaped paddles 14 is that the inclined surface can reduce the contact between the cross-section and the handle 2 of the circuit breaker 1, preventing scratches on the handle 2 of the circuit breaker 1 during the opening and closing process. At the same time, it is also easy to fit into the handle 2 of the circuit breaker 1 to strengthen the operating plate 5 and prevent deformation during opening and closing.
[0032] As attached Figure 2 As shown, the elastic element 7 includes two tension springs 15, which are symmetrically arranged on both sides of the operating plate 5. One end of each tension spring 15 is connected to the operating plate 5, and the other end is connected to the mounting housing 3. Holes can be made on the mounting housing 3 and the operating plate 5 for hooking and fixing the ends of the tension springs 15. Alternatively, screws or other protruding structures can be provided on the mounting housing 3 and the operating plate 5 for hooking and fixing the ends of the tension springs 15. When the circuit breaker 1 is closed, the tension spring 15 stores energy. If the circuit breaker 1 is accidentally tripped, the tension spring 15 assists the circuit breaker 1 in releasing energy, ensuring that the operating mechanism shaft 4 rotates and drives the external handle to the tripped indicator position.
[0033] As attached Figure 1 As shown, the rotating shaft 4 has a square hole 16 along its axial direction at its center for inserting a square shaft. The square hole 16 on the rotating shaft 4 allows for the insertion of a square shaft, enabling the rotating shaft 4 to rotate as the square shaft rotates.
[0034] As attached Figure 3As shown, at least one threaded hole 17 extending radially along the side of the rotating shaft 4 is provided. A locking bolt 18 is threadedly connected to the threaded hole 17. In this embodiment, two threaded holes 17 are provided, spaced 90° apart. Locking bolts 18 are threadedly connected to both threaded holes 17. Tightening the locking bolts 18 will cause the inner end of the locking bolts 18 to press the square shaft against the square hole 16 of the rotating shaft 4, thereby preventing the square shaft from moving longitudinally or falling off.
[0035] As attached Figure 3 As shown, the mounting housing 3 has a shaft hole 19, and the rotating shaft 4 passes through the shaft hole 19. The rotating shaft 4 has a limiting flange 20 for engaging with one side of the mounting housing 3 and a retaining spring 21 for engaging with the other side of the mounting housing 3. A bushing can be installed on the mounting housing 3 at a position corresponding to the inner or outer end of the shaft hole 19. The bushing fits around the rotating shaft 4 to provide limiting support and improve the stability of the rotating shaft 4's rotation. This design enables axial limiting of the rotating shaft 4, allowing it to rotate only circumferentially without axial displacement.
[0036] Working principle: First, align the linkage opening 13 of the operating plate 5 with the handle 2 of the circuit breaker 1. Then, fix the mounting housing 3 onto the circuit breaker 1. To open or close the circuit breaker 1, simply insert the square shaft into the square hole 16 of the rotating shaft 4, then tighten the two locking bolts 18. Turning the rotating shaft 4 will rotate the transmission gear 11, which in turn moves the operating plate 5. After the operating plate 5 moves, it moves the handle 2 on the circuit breaker 1, thus opening or closing the circuit breaker 1. After the circuit breaker 1 is closed, the tension spring 15 stores energy, enabling the linkage opening 13 to... The handle 2 is attached to the circuit breaker 1. Since the resistance of the handle 2 is much greater than the tension of the tension spring 15, the tension spring 15 will not drive the handle 2 to move. Instead, it will cause the linkage opening 13 to stick to the handle 2, thereby ensuring the accurate rotation position of the rotating shaft 4 when the square shaft moves the rotating shaft 4. When the circuit breaker 1 trips, the handle 2 starts, and at the same time, the tension spring 15 releases energy to assist the circuit breaker 1 in moving and drive the operating plate 5 to move. Through the longitudinal linkage hole 12 of the operating plate 5 and the transmission gear 11 on the rotating shaft 4, the square shaft on the rotating shaft 4 is driven to rotate, so as to achieve accurate indication of the position of the handle outside the cabinet. This method is worth promoting and applying.
Claims
1. A circuit breaker operating mechanism for opening and closing a handle (2) on a circuit breaker (1), characterized in that: The device includes a mounting housing (3), a rotating shaft (4), an operating plate (5), a transmission assembly (6), and an elastic element (7). The rotating shaft (4) is rotatably mounted on the mounting housing (3). The operating plate (5) is movably disposed within the mounting housing (3) and is connected to the rotating shaft (4) via the transmission assembly (6). The operating plate (5) is provided with a drive part (8) for engaging with the handle (2) on the circuit breaker (1). The rotating shaft (4) When the operating plate (5) is driven to move by the transmission assembly (6), the operating plate (5) has a first position for opening the circuit breaker (1) by moving the handle (2) of the circuit breaker (1) in a first direction, and a second position for closing the circuit breaker (1) by moving the handle (2) of the circuit breaker (1) in a second direction; the operating plate (5) is connected to the mounting housing (3) by the elastic member (7), so that the driving part (8) can fit against the handle (2) of the circuit breaker (1).
2. The circuit breaker operating mechanism according to claim 1, characterized in that: A pair of parallel pressure plates (9) are installed on the mounting shell (3), and a sliding channel (10) is left between the two pressure plates (9) and the mounting shell (3). The two sides of the operating plate (5) are respectively slidably arranged in the corresponding sliding channel (10).
3. A circuit breaker operating mechanism according to claim 1 or 2, characterized in that: The transmission assembly (6) includes a transmission gear (11), which is mounted on the rotating shaft (4) in a circumferential linkage. A plurality of linkage holes (12) for cooperating with the transmission gear (11) are distributed on one side of the operating plate (5) along the movement direction of the operating plate (5).
4. The circuit breaker operating mechanism according to claim 1, characterized in that: The drive unit (8) includes a linkage opening (13) provided on the operating plate (5), and the handle (2) of the circuit breaker (1) is inserted into the linkage opening (13).
5. A circuit breaker operating mechanism according to claim 4, characterized in that: The control plate (5) is symmetrically provided with two V-shaped paddles (14) at the upper and lower edges of the linkage opening (13).
6. The circuit breaker operating mechanism according to claim 1, characterized in that: The elastic element (7) includes two tension springs (15), which are symmetrically arranged on both sides of the operating plate (5). One end of the tension spring (15) is connected to the operating plate (5), and the other end of the tension spring (15) is connected to the mounting shell (3).
7. A circuit breaker operating mechanism according to claim 1, characterized in that: The rotating shaft (4) has a square hole (16) along the axial direction at its center for inserting a square shaft.
8. A circuit breaker operating mechanism according to claim 7, characterized in that: The side of the rotating shaft (4) is provided with at least one threaded hole (17) extending radially along the rotating shaft (4), and a locking bolt (18) is threaded onto the threaded hole (17).
9. A circuit breaker operating mechanism according to claim 1, characterized in that: The mounting housing (3) has a shaft hole (19), the rotating shaft (4) passes through the shaft hole (19), and the outer periphery of the rotating shaft (4) is provided with a limiting flange (20) for fitting with one side of the mounting housing (3) and a retaining ring (21) for fitting with the other side of the mounting housing (3).