Opening and closing operation mechanism and dual-power change-over switch
By introducing an electromagnetic switching mechanism and a second linkage into the dual power transfer switch, the problems of deformation and instability of the mechanism during the switching process are solved, achieving fast and reliable dual power transfer, reducing closing torque, and improving safety.
Patent Information
- Application Number
- CN202422550564.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-22
- Publication Date
- 2025-10-28
- Estimated Expiration
- 2034-10-22
AI Technical Summary
The mechanism of the existing PC-level dual power automatic transfer switch is prone to deformation and instability during the transfer process, resulting in failure of the dual power automatic transfer and posing a safety hazard.
An electromagnetic conversion mechanism is adopted, including a coil, a moving iron core and a stationary iron core. The moving iron core and the stationary iron core are connected by a spring and a third shaft, which helps the mechanism to complete the opening and closing action quickly. The second link reduces friction and lowers the closing torque.
The rapid and stable conversion of the mechanism is achieved, the jamming phenomenon is avoided, and the reliability and safety of the dual power conversion are improved.
Smart Images
Figure CN223486876U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of circuit breaker technology, and in particular to a circuit breaker opening and closing mechanism and a dual power supply transfer switch. Background Art
[0002] PC-class dual-power automatic transfer switches are commonly used low-voltage electrical appliances, generally used for switching between two power sources. This ensures a rapid switch to the other power source when one power source fails or stops supplying power, guaranteeing normal power supply to the load circuit. Therefore, the stability of the mechanism is crucial. PC-class dual-power switches on the market contain many components, so careful consideration of the interlocking mechanisms is essential for achieving better stability. Current technology has found that even slight bending of components during dual-power switching can lead to structural instability, causing automatic switching failures and affecting power supply, posing a certain safety hazard.
[0003] Therefore, this utility model needs to provide a circuit breaker opening and closing operation mechanism and a dual power supply transfer switch. The circuit breaker opening and closing operation mechanism has a simple structure and can prevent deformation and unstable switching during the switching process. Utility Model Content
[0004] The purpose of this invention is to provide a circuit breaker opening and closing mechanism and a dual power supply transfer switch, thereby solving the aforementioned problems existing in the prior art.
[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0006] A circuit breaker opening and closing operation mechanism includes: a mounting plate, wherein the mounting plate is further provided with an electromagnetic conversion mechanism, the electromagnetic conversion mechanism being used to quickly complete the circuit breaker opening and closing operation.
[0007] Furthermore, the electromagnetic conversion mechanism includes: a coil, a moving iron core, and a stationary iron core. Both the moving and stationary iron cores are installed inside the coil. A spring and a third shaft are also provided between the moving and stationary iron cores. The end of the stationary iron core away from the moving iron core is also connected to a second shaft. The end of the second shaft away from the stationary iron core is also connected to a square shaft. The square shaft is also connected to one end of a lever. The other end of the lever is connected to a first connecting rod through a first fixed shaft. The first connecting rod is also connected to a left cantilever and a right cantilever. The square shaft is connected to the lever through the first shaft. A retaining ring is also installed on the first shaft.
[0008] Furthermore, the left and right cantilever arms are located on the side away from the electromagnetic conversion mechanism. The left and right cantilever arms are also provided with sliding grooves, and sliding shafts are provided in the sliding grooves. One end of the sliding shaft is connected to the first connecting rod, and the other end of the sliding shaft is connected to one end of the second connecting rod. The other end of the second connecting rod is axially connected to one end of the connecting member. One end of the connecting member is connected to one end of the lever through a second fixed shaft.
[0009] Furthermore, the lower ends of the left and right cantilever arms are arranged crosswise, the upper end of the left cantilever arm is mounted on the second mounting plate via a first rectangular shaft, the upper end of the right cantilever arm is mounted on the second mounting plate via a second rectangular shaft, and the included angle between the left and right cantilever arms is less than or equal to 90°.
[0010] Furthermore, it also includes a first bracket and a second bracket, the lower ends of the first bracket and the second bracket are fixed to the upper surface of the first mounting plate, the first bracket is installed at one end close to the coil, and the second bracket is installed at the other end close to the coil.
[0011] Furthermore, each of the left and right cantilever arms is provided with a micro switch at the relatively far ends. The two micro switches cooperate with the left and right cantilever arms respectively, and the micro switches are used for feedback on opening and closing.
[0012] Furthermore, the second mounting plate is also provided with a sliding groove, which is Y-shaped.
[0013] Furthermore, the square shaft is connected to the lever via a first shaft, and the first shaft is also fitted with a retaining ring.
[0014] Furthermore, the lever includes a first connecting rod, a second connecting rod, and a third connecting rod, with the second connecting rod located between the first and third connecting rods. The connection points of the first and second connecting rods form an angle, and the connection points of the third connecting rod and the second connecting rod also form an angle.
[0015] The first connecting rod and the second connecting rod are also provided with a first protrusion and a second protrusion near the square axis.
[0016] Furthermore, the connector includes a first part, a second part, and a third part, with the second part located between the first part and the second part, and the first part, the second part, and the third part forming a U-shaped connector.
[0017] This utility model also includes a dual power supply transfer switch, which includes the above-mentioned opening and closing operation mechanism.
[0018] The beneficial effects of this utility model are:
[0019] Because of the installation of an electromagnetic conversion mechanism, the mechanism can complete the opening and closing actions quickly and solve the jamming problem between the mechanisms. In addition, the present invention also has a second connection, which reduces the friction between the mechanisms through the second connecting rod, which helps to reduce the closing torque and makes it easier to close the circuit. Attached Figure Description
[0020] Figure 1 This is a structural diagram of the opening and closing operation mechanism of this utility model;
[0021] Figure 2 This is a structural diagram of the opening and closing operation mechanism of this utility model;
[0022] Figure 3 This is an exploded view of the electromagnetic conversion mechanism of this utility model;
[0023] Figure 4 This is a schematic diagram of the lever structure of this utility model;
[0024] Figure 5 This is a structural schematic diagram of the connector of this utility model.
[0025] Figure label:
[0026] First mounting plate 1, second mounting plate 2, coil 3, moving iron core 4, stationary iron core 5, spring 6, third shaft 7, second shaft 8, square shaft 9, first shaft 10, snap ring 11, lever 12, first fixed shaft 13, first connecting rod 14, left cantilever 15, right cantilever 16, slide groove 17, sliding shaft 18, sliding groove 19, second connecting rod 20, connector 21, second fixed shaft 22, first square shaft 23, second square shaft 24, first bracket 25, second bracket 26, micro switch 27;
[0027] First connecting rod 121, second connecting rod 122, third connecting rod 123, first protrusion 124, second protrusion 125;
[0028] Part 1 211, Part 2 212 and Part 3 213. DETAILED DESCRIPTION
[0029] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the scope of the present utility model.
[0030] It should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model or simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0031] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.
[0032] The term “exemplary” as used herein means “serving as an example, embodiment, or illustration.” Any embodiment illustrated herein as “exemplary” is not necessarily to be construed as superior to or better than other embodiments.
[0033] Furthermore, to better illustrate this application, numerous specific details are provided in the following detailed embodiments. Those skilled in the art should understand that this application can be implemented without certain specific details. In some instances, methods, means, components, and circuits well-known to those skilled in the art have not been described in detail in order to highlight the main points of this application.
[0034] like Figures 1 to 3 As shown, a circuit breaker opening and closing operation mechanism includes: a mounting plate, which is formed by bending to form a first mounting plate 1 and a second mounting plate 2. The first mounting plate 1 is also provided with an electromagnetic conversion mechanism, which is used to quickly complete the circuit breaker opening and closing operation.
[0035] As can be seen from the above, due to the installation of the electromagnetic conversion mechanism, the mechanism can be assisted in completing the rapid opening and closing action and solve the jamming phenomenon between the mechanisms. In addition, the present invention also sets a second connecting rod, which reduces the friction between the mechanisms, which helps to reduce the closing torque and makes it easier to close the circuit.
[0036] Furthermore, it is worth mentioning that the electromagnetic conversion mechanism includes: a coil 3, a moving iron core 4, and a stationary iron core 5. Both the moving iron core 4 and the stationary iron core 5 are installed within the coil 3. Specifically, in this embodiment, the coil includes a first fixed plate, a second fixed plate, and a cylinder. The cylinder is a cylinder with the same shape at both ends. The first fixed plate is fixedly installed at one end of the cylinder, and the second fixed plate is fixedly installed at the other end. The first fixed plate, the cylinder, and the third fixed plate are integrally formed by injection molding. A spring 6 and a third shaft 7 are also provided between the moving iron core 4 and the stationary iron core 5. The end away from the moving iron core 4 is also connected to the second shaft 8. The end of the second shaft 8 away from the stationary iron core 5 is also connected to the square shaft 9. The second shaft 8 is connected to the square shaft 9 through a threaded structure. Due to the threaded connection, it is beneficial to adjust the electromagnet spacing. The square shaft 9 is connected to one end of the lever 12 through the first shaft 10 and fixed by the provided snap ring 11. The other end of the lever 12 is connected to the first connecting rod 14 through the first fixed shaft 13. The first connecting rod 14 is also connected to the left cantilever 15 and the right cantilever 16. The electromagnetic force generated by the coil of the electromagnetic conversion mechanism assists the mechanism to complete the rapid opening action and solves the jamming phenomenon between the mechanisms.
[0037] Specifically, in this embodiment, the left cantilever 15 and the right cantilever 16 are located on the side away from the electromagnetic conversion mechanism. The left cantilever 15 and the right cantilever 16 have the same structure and are equal in size. The left cantilever 15 and the right cantilever 16 are also provided with a sliding groove 17. The sliding groove 17 is provided with a sliding shaft 18. In order to cooperate with the sliding shaft, the second mounting plate 2 is also provided with a sliding groove 19. The sliding groove 19 is Y-shaped. One end of the sliding shaft 18 is connected to the first connecting rod 14, and the other end of the sliding shaft 18 is connected to one end of the second connecting rod 20. The other end of the second connecting rod 20 is axially connected to one end of the connecting member 21. The other end of the connecting member 21 is connected to one end of the lever 12 through the second fixed shaft 22. The electromagnetic conversion mechanism drives the left and right cantilever arms to swing back and forth. The left cantilever 15 and the right cantilever 16 abut against the small iron piece on the micro switch, so that the micro switch is closed, realizing the opening and closing of the device.
[0038] Additionally, it should be noted that the lower ends of the left cantilever 15 and the right cantilever 16 are arranged in a cross configuration. The upper end of the left cantilever 15 is mounted on the second mounting plate 2 via the first rectangular shaft 23, and the upper end of the right cantilever 16 is mounted on the second mounting plate 2 via the second rectangular shaft 24. The included angle between the left cantilever 15 and the right cantilever 16 is less than or equal to 90°. Since the upper ends of the left cantilever 15 and the right cantilever 16 are fixed to the second mounting plate 2 via the first rectangular shaft 23 and the second rectangular shaft 24 respectively, the lower ends achieve left and right swinging through an electromagnetic conversion mechanism.
[0039] To support the electromagnetic conversion mechanism, this embodiment also includes a first bracket 25 and a second bracket 26. The first bracket 25 and the second bracket 26 have the same structure and are equal in size. Both the first bracket 25 and the second bracket 26 include a bracket body. The lower end of the bracket body is provided with at least two bends, and fixing holes are provided on the bends. During installation, bolts pass through the fixing holes on the bends to fix the bracket body onto the base plate. Fixing parts are also provided on both sides of the upper end of the bracket body. The fixing parts are used to fix and connect to the second mounting plate. The bends and fixing parts are connected to the bracket body by integral molding. The lower ends of the first bracket 25 and the second bracket 26 are fixed to the upper surface of the first mounting plate 1. The first bracket 25 is installed at one end near the coil 3, and the second bracket 26 is installed at the other end near the coil 3. Holes are also provided on the bracket bodies of the first bracket 25 and the second bracket 26. In this embodiment, the hole on the first bracket 25 is larger than the hole on the second bracket 26. The hole on the first bracket 25 is used to install the coil, and the hole on the second bracket 26 is used to pass the second shaft through the hole.
[0040] For feedback on opening and closing, microswitches 27 are provided at the relatively far ends of the left cantilever 15 and the right cantilever 16. The two microswitches 27 cooperate with the left cantilever 15 and the right cantilever 16 respectively. The microswitches 27 are used for feedback on opening and closing. The microswitches 27 are fixed to the second mounting plate 2 by screws. The small iron pieces of the two microswitches 27 cooperate with the left cantilever 15 and the right cantilever 16 respectively. Through the linkage of the lever 12, the left cantilever 15 and the right cantilever 16 abut against the small iron pieces of the microswitches 27, so that the microswitches 27 are closed. When the left cantilever 15 and the right cantilever 16 swing back and forth, the opening and closing of the equipment can be realized.
[0041] Specifically, in this embodiment, for ease of installation, such as Figure 4 As shown, the lever 12 includes a first connecting rod 121, a second connecting rod 122, and a third connecting rod 123. The first connecting rod 121, the second connecting rod 122, and the third connecting rod 123 are fixedly connected by integral molding. The second connecting rod 122 is located between the first connecting rod 121 and the third connecting rod 123. An angle is formed at the connection between the first connecting rod 121 and the second connecting rod 122, and an angle is formed at the connection between the third connecting rod 123 and the second connecting rod 122.
[0042] The first connecting rod 121 and the third connecting rod 123 are also provided with a first protrusion 124 and a second protrusion 125 near the square shaft 9. The first protrusion 124 and the second protrusion 125 are also provided with mounting holes. During installation, the square shaft 9 is positioned between the first protrusion 124 and the second protrusion 125, and the first protrusion 124, the square shaft 9 and the second protrusion 125 are connected together through the first shaft 10.
[0043] Furthermore, in this embodiment, for ease of installation, such as Figure 5 As shown, the connector 21 includes a first part 211, a second part 212, and a third part 213. The first part 211, the second part 212, and the third part 213 are connected by integral molding. The second part 212 is located between the first part 211 and the third part 213. The first part 211, the second part 212, and the third part 213 form a U-shaped connector.
[0044] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.
Claims
1. A circuit breaker opening and closing operating mechanism, characterized in that, Includes: a mounting plate, which is formed into a first mounting plate and a second mounting plate by bending, and the mounting plate is also provided with an electromagnetic conversion mechanism, which is used to quickly complete the opening and closing action; The electromagnetic conversion mechanism includes a coil, a moving iron core, and a stationary iron core. Both the moving and stationary iron cores are installed inside the coil. A spring and a third shaft are also provided between the moving and stationary iron cores. The end of the stationary iron core away from the moving iron core is connected to a second shaft. The end of the second shaft away from the stationary iron core is connected to a square shaft. The square shaft is also connected to one end of a lever. The other end of the lever is connected to a first connecting rod via a first fixed shaft. The first connecting rod is also connected to a left cantilever and a right cantilever. The square shaft is connected to the lever via the first shaft. A retaining spring is also installed on the first shaft.
2. The opening and closing operating mechanism according to claim 1, characterized in that: The left and right cantilever arms are located on the side away from the electromagnetic conversion mechanism. The left and right cantilever arms are also provided with sliding grooves, and sliding shafts are provided in the sliding grooves. One end of the sliding shaft is connected to the first connecting rod, and the other end of the sliding shaft is connected to one end of the second connecting rod. The other end of the second connecting rod is axially connected to one end of the connecting member. One end of the connecting member is connected to one end of the lever through a second fixed shaft.
3. The opening and closing operating mechanism according to claim 1, characterized in that: The lower ends of the left and right cantilever arms are arranged crosswise. The upper end of the left cantilever arm is mounted on the second mounting plate via a first rectangular shaft, and the upper end of the right cantilever arm is mounted on the second mounting plate via a second rectangular shaft. The included angle between the left and right cantilever arms is less than or equal to 90°.
4. The opening and closing operating mechanism according to claim 1, characterized in that: It also includes a first bracket and a second bracket, the lower ends of the first bracket and the second bracket are fixed to the upper surface of the first mounting plate, the first bracket is installed at one end near the coil, and the second bracket is installed at the other end near the coil.
5. The opening and closing operating mechanism according to claim 2, characterized in that: Each of the left and right cantilever arms is equipped with a micro switch at the relatively far ends. The two micro switches cooperate with the left and right cantilever arms respectively, and the micro switches are used for feedback of opening and closing.
6. The opening and closing operating mechanism according to claim 1, characterized in that: The second mounting plate is also provided with a sliding groove, which is Y-shaped.
7. The opening and closing operating mechanism according to claim 1, characterized in that: The lever includes a first connecting rod, a second connecting rod, and a third connecting rod. The second connecting rod is located between the first connecting rod and the third connecting rod. The connection points of the first connecting rod and the second connecting rod form an angle, and the connection points of the third connecting rod and the second connecting rod also form an angle. The first connecting rod and the second connecting rod are also provided with a first protrusion and a second protrusion near the square axis.
8. The opening and closing operating mechanism according to claim 2, characterized in that: The connector includes a first part, a second part, and a third part, with the second part located between the first part and the third part, and the first part, the second part, and the third part forming a U-shaped connector.
9. A dual-power transfer switch, comprising a switching mechanism, characterized in that, The opening and closing operation mechanism is the same as that described in any one of claims 1 to 8.