Interlocking mechanism for quickly installing circuit breaker
By designing a fast-install circuit breaker interlock mechanism using clamp seat, mobile top plate and central axis, the existing mechanical interlock mechanism has been solved, and the effects of simplifying the structure, reducing costs and improving adaptability and flexibility are achieved.
Patent Information
- Application Number
- CN202422408698.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-30
- Publication Date
- 2025-07-01
- Estimated Expiration
- 2034-09-30
AI Technical Summary
The mechanical interlocking mechanism of existing circuit breakers is complex, inconvenient to operate, and poor adaptability, resulting in high manufacturing costs, increased failure rates, difficult maintenance and difficult operation.
A quick-install circuit breaker interlock mechanism is designed, adopting structures such as clamp seat, moving roof plate and central axis. By sliding the roof plate blocking the closing operation, only one circuit breaker is in the closing state when switching the dual-channel power supply.
The mechanical interlocking structure is simplified, the number of parts is reduced, the manufacturing cost and failure rate is reduced, the convenience of maintenance and operation is improved, and the versatility and flexibility of adapting to circuit breakers of different specifications is enhanced.
Smart Images
Figure CN223052080U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of breaker accessories, in particular to a quick-installation breaker interlock mechanism. Background Art
[0002] Existing circuit breakers are usually equipped with two methods of electrical interlock and mechanical interlock to ensure the sequentiality and safety of operations. The electrical interlock is achieved through relays or contactors, while the mechanical interlock relies on physical structure design to ensure that the circuit breaker can only be operated under specific conditions, avoiding the risks brought by misoperations.
[0003] However, in practical applications, traditional mechanical interlock mechanisms have deficiencies such as high complexity and inconvenient operation. For example, existing mechanical interlock structures are often relatively complex, involving the linkage of multiple components, which not only increases the manufacturing cost but also may lead to an increase in the failure rate. The complex structure design makes maintenance and repair more difficult, is not intuitive enough in operation, has a large operation difficulty, and moreover, different specifications of circuit breakers are for mechanical interlock mechanisms with specific structures, and the adaptability is poor. Summary of the Invention
[0004] The purpose of the utility model: In order to overcome the defects of the prior art, the utility model provides a quick-installation breaker interlock mechanism to solve the deficiencies such as high complexity and inconvenient operation.
[0005] The technical solution of the utility model: The breaker includes a first breaker and a second breaker. A first handle and a second handle are respectively provided on the first breaker and the second breaker. The first breaker and the second breaker are respectively installed on a guide rail plate. The mechanical interlock mechanism includes a clamp seat. The first breaker and the second breaker are respectively arranged on two sides in the width direction of the clamp seat. A moving top plate and a central shaft are arranged on the top surface of the clamp seat. A long strip sliding hole is opened on the moving top plate along the width direction of the clamp seat. The central shaft passes through the long strip sliding hole from top to bottom and is connected to the top surface of the clamp seat to limit the moving top plate in the axial direction of the central shaft; A tilted guiding arm is also fixed on the top surface of the clamp seat. The guiding arm tilts into the long strip sliding hole and is in contact with the hole wall of the long strip sliding hole and relatively slides; The moving top plate has a blocking surface and side blocking surfaces at both positions in the width direction. When the moving top plate moves above the corresponding breaker, the blocking surface abuts against the handle of the breaker to limit the closing of the handle, and the side blocking surfaces form an abutting fit with the handle of the other breaker in the width direction.
[0006] With the above technical solution, by sliding the movable top plate, the blocking surface is blocked on the corresponding handle that needs to be tripped, while the other circuit breaker handle can be closed. After closing, due to the blocking of the side blocking surface, the movable top plate is prevented from shifting, so that at most only one circuit breaker is in the closed state during the dual-power supply switching process; the new mechanical interlock mechanism simplifies the traditional mechanical interlock structure with multi-component linkage by using settings such as the clamp seat, movable top plate and central shaft. In this way, not only the number of components is reduced, the manufacturing cost is lowered, but also the failure rate caused by too many parts is reduced; moreover, due to the simple structure, the maintenance and inspection work becomes easier and the operation is more intuitive, enabling the operator to more conveniently understand and execute the correct operation process; in addition, by adjusting the size of the movable top plate, it is easier to adapt to circuit breakers of different specifications, improving the versatility and flexibility of the mechanical interlock mechanism.
[0007] In a possible design, the central shaft is threadedly connected to the clamp seat, and a knob is fixedly installed at the top of the central shaft. When the knob is tightened, it presses against the movable top plate.
[0008] With the above design, when the knob is tightened, it presses against the movable top plate, providing a stable pressure point, making the movable top plate not easily displace unnecessarily in the preset state and enhancing the stability of the entire interlock system.
[0009] In a possible design, the clamp seat includes a frame edge and an inner plate. The frame edge is located at the edge of the inner plate, and a cross-shaped rib is integrally provided on the surface of the inner plate, and the rib extends to the frame edge.
[0010] With the above design, the design of the cross-shaped rib can significantly improve the rigidity of the inner plate without adding too much material, prevent deformation when subjected to external forces, and thus ensure the structural stability and durability of the entire interlock mechanism.
[0011] In a possible design, a guide rail mounting bracket is fixedly provided at the bottom of the clamp seat, and the guide rail mounting bracket is snap-connected to the guide rail plate.
[0012] With the above design, the rapid installation and disassembly of the circuit breaker and its interlock mechanism are realized, simplifying the on-site deployment and maintenance process of the equipment, improving the work efficiency. Moreover, the guide rail mounting bracket can ensure that the circuit breaker and the interlock mechanism have a high positioning accuracy during installation, avoiding the risk of operation errors or interlock failure caused by position deviation. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 is a schematic structural diagram of a specific embodiment of the present utility model;
[0014] Figure 2 is an exploded view of a specific embodiment of the present utility model;
[0015] Figure 3 A reference diagram of a use state of a specific embodiment of the utility model;
[0016] Among them, 1. first circuit breaker; 2. second circuit breaker; 11. first handle; 21. second handle; 3. clamp seat; 31. guide arm; 32. frame edge; 33. inner plate; 34. rib; 35. guide rail mounting frame; 4. movable top plate; 41. long sliding hole; 42. blocking surface; 43. side blocking surface; 5. center axis; 51. knob. DETAILED DESCRIPTION
[0017] like Figures 1-3 A quick-installation circuit breaker interlocking mechanism is shown, the circuit breaker includes a first circuit breaker 1 and a second circuit breaker 2, the first circuit breaker 1 and the second circuit breaker 2 are respectively provided with a first handle 11 and a second handle 21, the first handle 11 and the second handle 21 are displaced upwards to close the circuit, and the first handle 11 and the second handle 21 are displaced downwards to open the circuit. The first circuit breaker 1 and the second circuit breaker 2 are respectively mounted on the guide rail plate. The mechanical interlocking mechanism includes a clamp seat 3, the first circuit breaker 1 and the second circuit breaker 2 are respectively arranged on both sides of the clamp seat 3 in the width direction to form a clamp for the clamp seat 3, a movable top plate 4 and a central axis 5 are arranged on the top surface of the clamp seat 3, a long strip sliding hole 41 is arranged on the movable top plate 4 along the width direction of the clamp seat 3, the central axis 5 is inserted into the long strip sliding hole 41 from top to bottom and connected to the top surface of the clamp seat 3, thereby limiting the movable top plate 4 in the axial direction of the central axis 5 to prevent the movable top plate 4 from shifting upward. A tilted guide arm 31 is also fixed on the top surface of the clamp seat 3. The guide arm 31 tilts from the top surface of the clamp seat 3 and is then placed in the long slide hole 41. Both sides of the guide arm 31 contact the hole wall of the long slide hole 41 and slide relatively. With the cooperation of the guide arm 31 and the long slide hole 41, the movable top plate 4 can only move along the width direction of the clamp seat 3 to prevent the movable top plate 4 from deviating from the preset moving track. The movable top plate 4 has a blocking surface 42 and side blocking surfaces 43 on both sides of the width direction. The blocking surface 42 is located between the side blocking surfaces 43 on both sides. When the movable top plate 4 moves to the top of the corresponding circuit breaker, the blocking surface 42 abuts against the handle of the circuit breaker to limit the closing of the handle, and the side blocking surface 43 forms an abutment with the handle of another circuit breaker in the width direction. In order to ensure the function of the side blocking surface 43, the side edge of the movable top plate 4 rises to expand the side blocking surface 43. For example, as shown in the figure, the movable top plate 4 slides toward the second circuit breaker 2 to the top of the second circuit breaker 2, and the blocking surface 42 can be against the second handle 21, so that the second handle 21 cannot be closed upward. At this time, the first handle 11 of the first circuit breaker 1 can be closed upward freely. After closing, one of the side blocking surfaces 43 of the movable top plate 4 is located on one side of the width direction of the first handle 11, and the movable top plate 4 cannot move toward the first circuit breaker 1 when the first handle 11 is closed. Therefore, at most only one circuit breaker of the first circuit breaker 1 and the second circuit breaker 2 can be closed, realizing the switching interlock between the circuit breakers.
[0018] The central shaft 5 is threadedly connected to the clamping seat 3. A knob 51 is fixedly installed at the top of the central shaft 5. When the knob 51 is tightened, it presses against the moving top plate 4. When the knob 51 is tightened, the bottom surface of the knob 51 presses against the moving top plate 4, providing a stable pressure point, so that the moving top plate 4 is not prone to unnecessary displacement in the preset state. When it is necessary to replace the position of the moving top plate 4, loosen the knob 51 and then operate the displacement of the moving top plate 4.
[0019] The clamping seat 3 includes a frame edge 32 and an inner plate 33. The frame edge 32 is located at the edge of the inner plate 33. A cross-shaped rib 34 is integrally provided on the surface of the inner plate 33, and the rib 34 extends to the frame edge 32. The rib 34 is used to increase the overall structural strength and ensure structural stability. The thickness of the frame edge 32 is set to be the same as the thickness of the 1P circuit breaker to maintain aesthetics.
[0020] A guide rail mounting bracket 35 is fixedly provided at the bottom of the clamping seat 3, and the guide rail mounting bracket 35 is snap-connected to the guide rail plate. The snap connection can not only keep the clamping seat 3 and the guide rail plate fixedly connected without external force, but also realize quick installation and disassembly, which is convenient for on-site assembly.
Claims
1. A quick-installation circuit breaker interlocking mechanism, the circuit breaker comprising a first circuit breaker (1) and a second circuit breaker (2), the first circuit breaker (1) and the second circuit breaker (2) being provided with a first handle (11) and a second handle (21) respectively, the first circuit breaker (1) and the second circuit breaker (2) being respectively installed on a guide rail plate, characterized in that: The mechanical interlocking mechanism comprises a clamping seat (3), a first circuit breaker (1) and a second circuit breaker (2) are arranged on both sides of the clamping seat (3) in a width direction, a movable top plate (4) and a central axis (5) are arranged on the top surface of the clamping seat (3), a long sliding hole (41) is arranged on the movable top plate (4) along the width direction of the clamping seat (3), the central axis (5) is inserted into the long sliding hole (41) from top to bottom and connected to the top surface of the clamping seat (3) to limit the movable top plate (4) in the axial direction of the central axis (5); the clamping seat (3) A tilted guide arm (31) is also fixed on the top surface, the guide arm (31) tilted and placed in the long sliding hole (41) and in contact with the hole wall of the long sliding hole (41) and sliding relatively; the movable top plate (4) has a blocking surface (42) and side blocking surfaces (43) at both sides in the width direction; when the movable top plate (4) moves to the top of the corresponding circuit breaker, the blocking surface (42) abuts against the handle of the circuit breaker to limit the closing of the handle, and the side blocking surface (43) forms an abutment fit with the handle of another circuit breaker in the width direction.
2. The quick-install circuit breaker interlocking mechanism according to claim 1, characterized in that: The central shaft (5) is threadedly connected to the clamping seat (3); a knob (51) is fixedly mounted on the top of the central shaft (5); and when the knob (51) is tightened, it presses against the movable top plate (4).
3. The quick installation circuit breaker interlocking mechanism according to claim 1 or 2, characterized in that: The clamping seat (3) comprises a frame edge (32) and an inner plate (33), wherein the frame edge (32) is located at the edge of the inner plate (33), and a cross-shaped rib (34) is integrally provided on the surface of the inner plate (33), wherein the rib (34) extends to the frame edge (32).
4. The quick-install circuit breaker interlocking mechanism according to claim 1 or 2, characterized in that: A guide rail mounting frame (35) is fixedly provided at the bottom of the clamping seat (3), and the guide rail mounting frame (35) is clamped with the guide rail plate.