An automatic transfer switch

Abstract

The utility model discloses an automatic transfer switch, this automatic transfer switch includes main circuit mechanism and drive mechanism, include: first power static contact component, second power static contact component, first power dynamic contact component and second power dynamic contact component, second power static contact component with first power static contact component interval setting, first power dynamic contact component relative first power static contact component in a first closing position and a first opening position back and forth activity setting, second power dynamic contact component relative second power static contact component in a second closing position and a second opening position back and forth activity setting, drive mechanism includes electromagnetic drive assembly, electromagnetic drive assembly respectively with first power dynamic contact component with second power dynamic contact component transmission connection, the utility model discloses an automatic transfer switch electric volume is small, and the structure is relatively compact, can be applicable to the family indoor box, and simple operation is convenient.

Description

Technical Field

[0001] This utility model relates to the field of electrical technology, and in particular to an automatic transfer switch. Background Technology

[0002] A dual-power automatic transfer switch is a device that can automatically switch between two power sources. It is often used in critical equipment or systems to quickly switch to a backup power source when the main power source fails, ensuring normal power supply to the equipment.

[0003] With the implementation and promotion of the dual-carbon strategy, the new energy industry has developed rapidly, among which photovoltaic (solar) power generation occupies a more important position. Currently, user energy storage systems provide solar power to users, which can effectively save electricity costs and ensure power supply stability.

[0004] As the adoption of energy storage systems by residential and commercial users of new energy power generation systems gradually increases, residential users typically need to utilize both solar power and mains power, requiring the use of dual-power automatic transfer switches. However, traditional automatic transfer switches are bulky and unsuitable for use in residential indoor distribution boxes. Utility Model Content

[0005] The technical problem to be solved by this utility model is to provide an improved automatic transfer switch.

[0006] The technical solution adopted by this utility model to solve its technical problem is:

[0007] An automatic transfer switch, comprising:

[0008] The main circuit mechanism includes:

[0009] First power stationary contact assembly;

[0010] The second power stationary contact assembly is spaced apart from the first power stationary contact assembly;

[0011] The first power moving contact assembly is movably disposed relative to the first power stationary contact assembly in a first closed position and a first open position; when the first power moving contact assembly is in the first closed position, it is in contact with the first power stationary contact assembly; when the first power moving contact assembly is in the first open position, it is separated from the first power stationary contact assembly.

[0012] The second power moving contact assembly is movably disposed relative to the second power stationary contact assembly between a second closed position and a second open position. When the second power moving contact assembly is in the second closed position, it is in contact with the second power stationary contact assembly; when the second power moving contact assembly is in the second open position, it is separated from the second power stationary contact assembly.

[0013] The driving mechanism includes an electromagnetic driving component, which is connected to the first power moving contact component and the second power moving contact component respectively, so as to drive the first power moving contact component to move back and forth between the first closed position and the first open position, and to drive the second power moving contact component to move back and forth between the second closed position and the second open position.

[0014] The following are the beneficial effects of implementing this utility model: the automatic transfer switch is small in size and relatively compact in structure, suitable for household indoor boxes, and is simple and convenient to operate, and safe and reliable in performance. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments. In the accompanying drawings:

[0016] Figure 1 This is a first-view structural schematic diagram of an automatic transfer switch in some embodiments of this utility model;

[0017] Figure 2 yes Figure 1 An exploded three-dimensional structural diagram of the main circuit mechanism shown.

[0018] Figure 3 yes Figure 1 The diagram shows a front view of the first power moving contact assembly in the first open position and the second power moving contact assembly in the second open position after the second half of the housing is removed.

[0019] Figure 4 yes Figure 2 The diagram shows a front view of the first power moving contact assembly in the first closed position and the second power moving contact assembly in the second open position.

[0020] Figure 5 yes Figure 2 The diagram shows a front view of the first power moving contact assembly in the first open position and the second power moving contact assembly in the second closed position.

[0021] Figure 6 yes Figure 2 The diagram shows a front view of the first and second tension springs.

[0022] Figure 7 yes Figure 2 A three-dimensional structural diagram of the combination of the first power moving contact assembly, the second power moving contact assembly, and the load end assembly is shown.

[0023] Figure 8 yes Figure 2 A three-dimensional structural schematic diagram of the first transmission unit shown;

[0024] Figure 9 yes Figure 1 A three-dimensional structural schematic diagram of the first half-shell shown;

[0025] Figure 10 yes Figure 1 The diagram shows a three-dimensional structural representation of the combination of the second housing and the drive mechanism.

[0026] Figure 11 yes Figure 10 The diagram shows a front view of the second transmission assembly located at the sixth position after the fourth half-shell is removed.

[0027] Figure 12 yes Figure 11 The diagram shows a front view of the second transmission component located at the fourth position.

[0028] Figure 13 yes Figure 11 The diagram shows a front view of the second transmission component located at the fifth position. Detailed Implementation

[0029] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, the specific embodiments of this utility model are now described in detail with reference to the accompanying drawings. In the following description, it should be understood that the orientations or positional relationships indicated by terms such as "front," "rear," "upper," "lower," "left," "right," "longitudinal," "horizontal," "vertical," "horizontal," "top," "bottom," "inner," "outer," "head," and "tail" are based on the orientations or positional relationships shown in the accompanying drawings, and are constructed and operated in a specific orientation. They are only for the convenience of describing this technical solution and do not indicate that the device or component referred to must have a specific orientation; therefore, they should not be construed as limitations on this utility model.

[0030] It should also be noted that, unless otherwise explicitly specified and limited, terms such as "installation," "connection," "joining," "fixing," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. When an component is referred to as being "on" or "below" another component, the component can be located "directly" or "indirectly" on the other component, or there may be one or more intermediary components. The terms "second," "third," etc., are only for the convenience of describing this technical solution and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, features defined with "second," "third," etc., may explicitly or implicitly include one or more of that feature. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0031] In the following description, specific details such as particular system structures and techniques are set forth for illustrative purposes and not for limitation, in order to provide a thorough understanding of the embodiments of the present invention. However, those skilled in the art will understand that the present invention can be implemented in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, apparatuses, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.

[0032] The technical solution adopted by this utility model to solve its technical problem is:

[0033] like Figure 1 , Figure 2 and Figure 10 As shown, some embodiments of this utility model disclose an automatic transfer switch, which may include a housing 10, at least one main circuit mechanism 20, and a drive mechanism 30. The at least one main circuit mechanism 20 and the drive mechanism 30 are respectively disposed within the housing 10, and the at least one main circuit mechanism 20 is mechanically connected to the drive mechanism 30. The at least one main circuit mechanism 20 is used to connect a first power supply and a second power supply, and can automatically switch to the second power supply under the drive of the drive mechanism 30 when the first power supply fails or is interrupted; or, can automatically switch to the first power supply under the drive of the drive mechanism 30 when the second power supply fails or is interrupted.

[0034] It should be explained that at least one main circuit mechanism 20 means that the number can be arbitrarily set according to the actual industrial application. The main circuit mechanisms 20 have the same structure. In the following text, only the structure of one of the main circuit mechanisms 20 will be described in detail. Also, the terms "left side, right side, upper side, lower side, top, and bottom" appearing in the following text are defined according to the orientation shown in the figure in the specification.

[0035] continue Figure 2 , Figure 3 and Figure 10 In some embodiments, the housing 10 may include a first housing 11 and a second housing 12. The main circuit mechanism 20 is installed in the first housing 11, and the drive mechanism 30 is installed in the second housing 12. The first housing 11 and the second housing 12 are both independent square box structures, and the first housing 11 and the second housing 12 can also be connected to each other by means of adhesive, splicing, snap-fit, etc.

[0036] The number of first housings 11 and second housings 12 can be arbitrarily combined; in other words, the number of main circuit mechanisms 20 and drive mechanisms 30 can be arbitrarily combined. For example, four first housings 11 (each housing a main circuit mechanism 20) and one second housing 12 (each housing a drive mechanism 30) can be used in combination. Of course, in other embodiments, three, five, or eight (unlimited) first housings 11 (each housing a main circuit mechanism 20) and one, two, or three (unlimited) second housings 12 (each housing a drive mechanism 30) can be used in combination.

[0037] Continue to refer to Figure 2 and Figure 3 In some embodiments, the first housing 11 may include a first half-housing 111 and a second half-housing 112 joined together with the first half-housing 111. A first guide rail mounting groove 113 is provided on one side of both the first half-housing 111 and the second half-housing 112. The first half-housing 111 and the second half-housing 112 are joined together to form a box, facilitating the installation of the main circuit mechanism 20 within the first housing 11. The first half-housing 111 and the second half-housing 112 can be mounted on a guide rail inside a household meter box via the first guide rail mounting groove 113. In other embodiments, the first half-housing 111 and the second half-housing 112 can also be connected by screws, adhesive, or other methods.

[0038] like Figure 2 and Figure 9As shown, in some embodiments, the first housing 11 further includes a rotating shaft 1111 mounted on the inner wall of the first half-housing 111 and / or the second half-housing 112, a first opening limiting groove 1112 and a second opening limiting groove 1114 spaced apart on the inner wall of the first half-housing 111 and / or the second half-housing 112, and a limiting block 1113 disposed on the inner wall of the first half-housing 111 and / or the second half-housing 112; the limiting block 1113 is located between the first opening limiting groove 1112 and the second opening limiting groove 1114; the opening direction of the first opening limiting groove 1112 and the second opening limiting groove 1114 is close to the limiting block 1113 (the opening method faces to the left).

[0039] like Figure 10 As shown, in some embodiments, the second housing 12 may include a third half-housing 121 and a fourth half-housing 122 joined to the third half-housing 121. A second guide rail mounting groove 123 is provided on one side of both the third half-housing 121 and the fourth half-housing 122. The third half-housing 121 and the fourth half-housing 122 are joined together to form a box structure, facilitating the installation of the drive mechanism 30 within the second housing 12. The aforementioned first guide rail mounting groove 113 and the second guide rail mounting groove 123 are on the same horizontal line on the same plane, allowing the third half-housing 121 and the fourth half-housing 122 to be mounted on a guide rail inside a household meter box via the second guide rail mounting groove 123. In other embodiments, the third half-housing 121 and the fourth half-housing 122 may also be connected by screws, adhesive, or other methods.

[0040] like Figure 2 , Figure 3 and Figure 4 As shown, in some embodiments, the main circuit mechanism 20 may include a first power stationary contact assembly 21, a second power stationary contact assembly 22, a first power moving contact assembly 23, a second power moving contact assembly 24, a first transmission assembly 25, a load end assembly 26, and an arc-extinguishing chamber 27. The first power stationary contact assembly 21 and the second power stationary contact assembly 22 are spaced apart within the first housing 11. The first power stationary contact assembly 21 is electrically connected to a first power source, and the second power stationary contact assembly 22 is electrically connected to a second power source. An arc-extinguishing chamber 27 is disposed between the first power stationary contact assembly 21 and the second power stationary contact assembly 22; the first power moving contact assembly 23 and the second power moving contact assembly 24 are movably disposed within the first housing 11, with one end of the first power moving contact assembly 23 and the second power moving contact assembly 24 extending into the arc-extinguishing chamber 27; the first transmission assembly 25 is disposed within the first housing 11 and cooperates with the other ends of the first power moving contact assembly 23 and the second power moving contact assembly 24 respectively; the load end assembly 26 is electrically connected to the first power moving contact assembly 23 and the second power moving contact assembly 24 respectively, and the load end assembly 26 is used to electrically connect to the electrical equipment (power distribution system).

[0041] Continue to refer to Figure 3 and Figure 4 In some embodiments, the first transmission component 25 can drive the first power moving contact component 23 to be movably positioned relative to the first power stationary contact component 21 in a first closed position and a first open position. When the first power moving contact component 23 is in the first closed position, it is in contact with the first power stationary contact component 21; when the first power moving contact component 23 is in the first open position, it is separated from the first power stationary contact component 21. It is understood that the first power supply is electrically connected to the first power stationary contact component 21. When the first power moving contact component 23 is in contact with the first power stationary contact component 21, the current of the first power supply passes through the first power stationary contact component 21, the first power moving contact component 23, and the load terminal component 26 to supply power to the electrical equipment. Conversely, when the first power moving contact component 23 is separated from the first power stationary contact component 21, the current between the first power moving contact component 23 and the first power stationary contact component 21 is interrupted.

[0042] like Figure 4 and Figure 5 As shown, the first transmission component 25 can also drive the second power moving contact assembly 24 to move back and forth between a second closed position and a second open position relative to the second power stationary contact assembly 22. When the second power moving contact assembly 24 is in the second closed position, it is in contact with the second power stationary contact assembly 22; when the second power moving contact assembly 24 is in the second open position, it is separated from the second power stationary contact assembly 22. Understandably, the second power moving contact assembly 24 is electrically connected to a second power source. When the second power moving contact assembly 24 is in contact with the second power stationary contact assembly 22, the current from the second power source passes through the second power stationary contact assembly 22, the second power moving contact assembly 24, and the load terminal assembly 26 to supply power to the electrical equipment. Conversely, when the second power moving contact assembly 24 is separated from the second power stationary contact assembly 22, the current between the two components is interrupted.

[0043] In other words, the first transmission component 25 can mechanically drive the first power moving contact component 23 from the first open position to the first closed position, so that the first power moving contact component 23 contacts the first power stationary contact component 21, and the circuit between the first power supply and the electrical equipment is connected; at this time, the second power moving contact component 24 remains in the second open position. Alternatively, the first transmission component 25 can mechanically drive the first power moving contact component 23 from the first closed position to the first open position, so that the first power moving contact component 23 disengages from the first power stationary contact component 21, and the circuit between the first power supply and the electrical equipment is disconnected; at this time, the second power moving contact component 24 remains in the second open position.

[0044] Alternatively, the first transmission component 25 can mechanically drive the second power moving contact component 24 from the second open position to the second closed position, causing the second power moving contact component 24 to contact the second power stationary contact component 22, thus connecting the circuit between the second power supply and the electrical equipment; at this time, the first power moving contact component 23 remains in the first open position. Or, the first transmission component 25 can mechanically drive the second power moving contact component 24 from the second closed position to the second open position, causing the second power moving contact component 24 to disengage from the second power stationary contact component 22, thus disconnecting the circuit between the second power supply and the electrical equipment; at this time, the first power moving contact component 23 remains in the first open position.

[0045] In summary, the first transmission component 25 drives the second power moving contact component 24 to separate from the second power stationary contact component 22, and then the first transmission component 25 drives the first power moving contact component 23 to contact the first power stationary contact component 21, switching the power supply from the second power source to the first power source. Alternatively, the first transmission component 25 drives the first power moving contact component 23 to separate, and then the first transmission component 25 drives the second power moving contact component 24 to contact the second power stationary contact component 22, switching the power supply from the first power source to the second power source.

[0046] Continue to refer to Figure 3 and Figure 4 In some embodiments, the first power stationary contact assembly 21 may include a first power terminal 211, a first wire 212, and a first stationary contact 213. Specifically, a first terminal slot is formed on the surface of the first housing 11, the first power terminal 211 is embedded in the first terminal slot, the first power wire is electrically connected to the first power terminal 211, the first wire 212 electrically connects the first power terminal 211 and the first stationary contact 213, and the first stationary contact 213 is installed inside the first housing 11. The first stationary contact 213 is made of a conductive material such as a silver-based alloy or a copper-based alloy.

[0047] Refer again Figure 3 and Figure 4 In some embodiments, the second power stationary contact assembly 22 may include a second power terminal 221, a second wire 222, and a second stationary contact 223. Specifically, a second terminal slot is formed on the surface of the first housing 11, the second power terminal 221 is embedded within the second terminal slot, the second power wire is electrically connected to the second power terminal 221, and the second wire 222 electrically connects the second power terminal 221 and the second stationary contact 223. The second stationary contact 223 is installed within the first housing 11. The second stationary contact 223 is made of a conductive material such as a silver-based alloy or a copper-based alloy.

[0048] like Figure 6 and Figure 7 As shown, in some embodiments, the first power moving contact assembly 23 may include a first base 231, a first opening slot 230, a first contact 232, a first hinge portion 233, a first abutment surface 234, and a first limiting post 235. The first contact 232 is disposed at one end of the first base 231, the first opening slot 230 is disposed at the other end of the first base 231, and the first hinge portion 233 is disposed on the first base 231, located between one end and the other end of the first base 231. The opening direction of the first opening slot 230 is away from the first hinge portion 233, and the first opening slot 230 is operably engaged with the aforementioned first transmission assembly 25. The first abutment surface 234 is disposed on the side of the first base 231 near the second power moving contact assembly 24, and the first limiting post 235 is disposed on the first base 231.

[0049] When the first power moving contact assembly 23 is in the first open position, the first abutting surface 234 abuts against the upper surface of the limiting block 1113, and the first limiting post 235 abuts against the groove wall of the first open limiting groove 1112. When the first power moving contact assembly 23 is in the first closed position, the first abutting surface 234 disengages from the upper surface of the limiting block 1113, and the first limiting post 235 disengages from the groove wall of the first open limiting groove 1112.

[0050] like Figure 5 and Figure 7 As shown, in some embodiments, the second power contact assembly 24 may include a second base 241, a second opening slot 240, a second contact 242, a second hinge portion 243, a second abutment surface 244, and a second limiting post 245. The second contact 242 is disposed at one end of the second base 241, and the second opening slot 240 is disposed at the other end of the second base 241. The second hinge portion 243 is disposed on the second base 241 and located between one end of the second base 241 and the other end of the second base 241. The opening direction of the second opening slot 240 is away from the second hinge portion 243, and it is operably engaged with the first transmission assembly 25. The second abutment surface 244 is disposed on the side of the second base 241 near the first base 231, and the second limiting post 245 is disposed on the second base 241.

[0051] When the second power moving contact assembly 24 is in the second open position, the second abutment surface 244 abuts against the lower surface of the aforementioned limiting block 1113, and the second limiting post 245 abuts against the groove wall of the aforementioned second open limiting groove 1114. When the second power moving contact assembly 24 is in the second closed position, the second abutment surface 244 disengages from the lower surface of the limiting block 1113, and the second limiting post 245 disengages from the groove wall of the second open limiting groove 1114.

[0052] like Figure 4 and Figure 6 As shown, in some embodiments, the first transmission assembly 25 may include a first transmission unit 251, a second transmission unit 252, a first tension spring 253, a second tension spring 254, and a connecting rod 255. The first transmission unit 251 is rotatably disposed within the first housing 11 via the aforementioned rotating shaft 1111. The first transmission unit 251 mechanically drives the first power moving contact assembly 23 to switch back and forth between a first closed position and a first open position, or mechanically drives the second power moving contact assembly 24 to switch back and forth between a second closed position and a second open position. The second transmission unit 252 is connected to the first transmission unit 251 via the connecting rod 255. The second transmission unit 252 is rotatably disposed within the first housing 11 and partially extends out of the first housing 11. The second transmission unit 252 can be rotated by manually rotating the portion of the second transmission unit 252 extending into the first housing 11, and then the second transmission unit 252 drives the first transmission unit 251 via the connecting rod 255.

[0053] like Figure 6 and Figure 7 As shown, one end of the first tension spring 253 is movably mounted on the rotating shaft 1111 of the first transmission unit 251, and the other end of the first tension spring 253 is movably mounted on the aforementioned first hinge portion 233. The first tension spring 253 provides tension when the first power moving contact assembly 23 moves back and forth between the first closed position and the first open position, enabling rapid switching. One end of the second tension spring 254 is movably mounted on the rotating shaft 1111 of the first transmission unit 251, and the other end of the second tension spring 254 is movably mounted on the aforementioned second hinge portion 243. The second tension spring 254 provides tension when the second power moving contact assembly 24 moves back and forth between the second closed position and the second open position, enabling rapid switching. It should be noted that the movement of the first tension spring 253 and the second tension spring 254 is configured as a hook; of course, the first tension spring 253 and the second tension spring 254 can also be installed by means of sleeve connection, etc.

[0054] like Figure 5 and Figure 8As shown, in some embodiments, the first transmission unit 251 may include a main body 2511, a first drive unit 2512, a second drive unit 2513, a shaft hole 2514, and a first connecting rod connection 2515. The main body 2511 has a D-shaped structure, and the shaft hole 2514 is formed on the main body 2511, allowing the main body 2511 to be rotatably mounted on the aforementioned rotating shaft 1111 via the shaft hole 2514. The first drive unit 2512 and the second drive unit 2513 are respectively and spaced apart on the main body 2511. The first drive unit 2512 engages with the aforementioned first opening slot 230, and the second drive unit 2513 engages with the aforementioned second opening slot 240. The first connecting rod connection 2515 is disposed on the main body 2511, and one end of the connecting rod 255 is rotatably mounted on the first connecting rod connection 2515.

[0055] In some embodiments, the first transmission unit 251 may be in a first position under the drive of the second transmission unit 252 (see reference). Figure 4 ) and a second position (please refer to) Figure 5 The first power moving contact assembly 23 rotates back and forth between a first closed position and a first open position, thereby driving the second power moving contact assembly 24 to move back and forth between a second closed position and a second open position. When the first transmission unit 251 is in the first position, the first power moving contact assembly 23 is in the first closed position and the second power moving contact assembly 24 is in the second open position; when the first transmission unit 251 is in the second position, the second power moving contact assembly 24 is in the second closed position and the first power moving contact assembly 23 is in the first open position.

[0056] Understandably, when the first transmission unit 251 rotates from the first position to the second position, it drives the first power moving contact assembly 23 from the first closed position to the first open position, and simultaneously drives the second power moving contact assembly 24 from the first open position to the second closed position, so that the first power-connected power supply device is switched to the second power-connected power supply device. When the first transmission unit 251 rotates from the second position to the first position, it drives the first power moving contact assembly 23 from the first open position to the first closed position, and simultaneously drives the second power moving contact assembly 24 from the second closed position to the second open position, so that the second power-connected power supply device is switched to the first power-connected power supply device.

[0057] In some embodiments, the first transmission unit 251, driven by the second transmission unit 252, also has a third position located between the first and second positions (see reference). Figure 4 and Figure 6In the third position, the first power moving contact assembly 23 is in the first open position, and the second power moving contact assembly 24 is in the second open position.

[0058] Understandably, the first transmission unit 251 rotates under the drive of the second transmission unit 252. The first transmission unit 251 can rotate from a first position to a third position, from a third position to a second position, from a second position to a third position, and from a third position to a first position.

[0059] The specific rotation process is as follows: When the first transmission unit 251 rotates from the third position to the first position, the first transmission unit 251 drives the first power moving contact assembly 23 to move from the first open position to the first closed position. At this time, the second power moving contact assembly 24 remains in the second open position.

[0060] When the first transmission unit 251 rotates from the first position to the third position, the first transmission unit 251 drives the first power moving contact assembly 23 to move from the first closed position to the first open position. At this time, the second power moving contact assembly 24 remains in the second open position.

[0061] When the first transmission unit 251 rotates from the third position to the second position, the first transmission unit 251 drives the second power moving contact assembly 24 to move from the second open position to the second closed position; at this time, the first power moving contact assembly 23 remains in the first open position.

[0062] When the first transmission unit 251 rotates from the second position to the third position, the first transmission unit 251 drives the second power moving contact assembly 24 from the second closed position to the second open position; at this time, the first power moving contact assembly 23 remains in the first open position.

[0063] The movement principle of the first transmission unit 251 driving the first power moving contact assembly 23 and the second power moving contact assembly 24 is as follows:

[0064] Please refer to Figure 3 and Figure 4As shown, the specific principle of how the first transmission unit 251 drives the first power moving contact assembly 23 from the first open position to the first closed position when it rotates from the third position to the first position is as follows: The main body 2511 of the first transmission unit 251, near the end of the first power moving contact assembly 23, rotates counterclockwise downward along the axis of the rotating shaft 1111. During rotation, the first driving part 2512 on the main body 2511 pushes the first opening slot 230 of the first power moving contact assembly 23 downward. At the same time, the first abutting surface 234 of the first power moving contact assembly 23 receives an upward supporting force from the limiting block 1113. Under the combined action of this force, the first power moving contact assembly 23 will first move along the upper surface of the limiting block 1113 in a direction away from the main body 2511. The first limiting post 235 of the moving contact assembly 23 disengages from the groove wall of the first opening limiting groove 1112. At the same time, the first power moving contact assembly 23 rotates clockwise upward around the first driving part 2512 of the first transmission unit 251 through the first opening groove 230. The second driving part 2513 of the first transmission unit 251 disengages from the second opening groove 240 of the second power moving contact assembly 24. When the tension direction of the first tension spring 253 passes the first driving part 2512 of the first transmission unit 251, the first power moving contact assembly 23 stops moving away from the main body 2511. Under the action of the tension of the first tension spring 253, the first power moving contact assembly 23 quickly rotates upward and contacts the first stationary contact 213 of the first power stationary contact assembly 21, realizing the connection between the first power supply and the electrical equipment circuit.

[0065] Continue to refer to Figure 3 and Figure 4The specific principle behind how the first transmission unit 251 drives the first power moving contact assembly 23 from the first closed position to the first open position when it rotates from the first position to the third position is as follows: The end of the first transmission unit 251 closest to the first power moving contact assembly 23 rotates clockwise upwards. During rotation, the first driving part 2512 on the main body 2511 pushes the first opening slot 230 of the first power moving contact assembly 23 upwards. At the same time, the first contact 232 of the first power moving contact assembly 23 receives a downward supporting force from the first stationary contact 213. Under the combined action of this force, the first power moving contact assembly 23 moves around the first driving part 2512 of the first transmission unit 251 through the first opening slot 230. When the first tension spring 253 rotates counterclockwise downwards, and the tension direction of the first tension spring 253 passes the first driving part 2512 of the first transmission unit 251, the first power moving contact assembly 23 rotates rapidly downwards under the action of the tension spring 253 and moves away from the first power stationary contact assembly 21. At the same time, the second driving part 2513 of the first transmission unit 251 returns to the second opening slot 240. Finally, the first abutting surface 234 of the first power moving contact assembly 23 abuts against the upper surface of the limiting block 1113 and moves along the upper surface of the limiting block 1113 towards the main body 2511 until the first limiting post 235 of the first power moving contact 23 abuts against the slot wall of the first opening limiting slot 1112, and the circuit between the first power supply and the electrical equipment is disconnected.

[0066] like Figure 3 and Figure 5As shown, the specific principle of how the first transmission unit 251 drives the second power moving contact assembly 24 from the second open position to the second closed position when it rotates from the third position to the second position is as follows: The end of the main body 2511 of the first transmission unit 251 near the second power moving contact assembly 24 rotates clockwise upward along the axis of the rotating shaft 1111. During rotation, the second driving part 2513 on the main body 2511 of the first transmission unit 251 pushes the second opening slot 240 of the second power moving contact assembly 24 upward. At the same time, the second abutment surface 244 of the second power moving contact assembly 24 is supported downward by the limiting block 1113. Under the action of this combined force, the second power moving contact assembly 24 will first move away from the main body 2511 along the lower surface of the limiting block 1113. The second limiting post 235 of the second power moving contact assembly 24 disengages from the groove wall of the second opening limiting groove 1114. At the same time, the second power moving contact assembly 24 rotates counterclockwise downward around the second driving part 2513 of the first transmission unit 251 through the second opening groove 240. The first driving part 2512 of the first transmission unit 251 disengages from the first opening groove 230 of the first power moving contact assembly 23. When the tension direction of the second tension spring 254 passes the second driving part 2513 of the first transmission unit 251, the second power moving contact assembly 24 stops moving away from the main body 2511. Under the action of the tension of the second tension spring 254, the second power moving contact assembly 24 rotates rapidly downward and contacts the second stationary contact 223 of the second power stationary contact assembly 22, realizing the connection between the second power supply and the circuit of the electrical equipment.

[0067] Continue to refer to Figure 3 and Figure 5The specific principle of how the first transmission unit 251 drives the second power moving contact assembly 24 from the second closed position to the second open position when it rotates from the second position to the third position is as follows: The main body 2511 of the first transmission unit 251 rotates counterclockwise downwards at the end near the second power moving contact assembly 24. During rotation, the second driving part 2513 on the main body 2511 pushes the second opening slot 240 of the second power moving contact assembly 24 downwards. At the same time, the second contact 242 of the second power moving contact assembly 24 is supported upwards by the second stationary contact 223. Under the combined force, the second power moving contact assembly 24 moves around the second driving part 251 of the first transmission unit 251 through the second opening slot 240. 3. Rotate clockwise upwards. When the tension direction of the second tension spring 254 passes the second drive part 2513 of the first transmission unit 251, the second power moving contact assembly 24 rotates rapidly upwards under the action of the tension of the second tension spring 254 and moves away from the second power stationary contact assembly 22. At the same time, the first drive part 2512 of the first transmission unit 251 returns to the first opening slot 230. Finally, the second abutting surface 244 of the second power moving contact assembly 24 abuts against the lower surface of the limiting block 1113 and moves along the lower surface of the limiting block 1113 towards the main body 2511 until the second limiting post 245 of the second power moving contact assembly 24 abuts against the groove wall of the second opening limiting slot 1114, and the circuit between the second power supply and the electrical equipment is disconnected.

[0068] like Figure 3 and Figure 4 As shown, in some embodiments, the second transmission unit 252 may include a body portion 2521, an operating portion 2522, a first square groove 2523, and a second connecting rod connection portion 2524. Specifically, the inner wall of the first housing 11 is provided with a pin 1115, the body portion 2521 is rotatably mounted on the pin 1115, the operating portion 2522 is disposed on the body portion 2521 and extends out of the first housing 11; the first square groove 2523 is formed at the rotation axis of the body portion 2521, and the second connecting rod connection portion 2524 is disposed on the body portion 2521; the other end of the connecting rod 255 is rotatably mounted on the second connecting rod connection portion 2524. Understandably, when the operator rotates the operating portion 2522, the body portion 2521 rotates along the pin 1115, causing the body portion 2521 to drive the main body portion 2511 of the first transmission unit 251 to rotate via the connecting rod 255.

[0069] like Figure 4 and Figure 5As shown, in some embodiments, the second transmission unit 252 can rotate back and forth between a seventh position and an eighth position. Understandably, when the second transmission unit 252 is in the seventh position, the first transmission unit 251 is in the first position, the first power moving contact assembly 23 is in the first closed position, and the second power moving contact assembly 24 is in the second open position; when the second transmission unit 252 is in the eighth position, the first transmission unit 251 is in the second position, the first power moving contact assembly 23 is in the first open position, and the second power moving contact assembly 24 is in the second closed position.

[0070] In other words, when the second transmission unit 252 rotates from the seventh position to the eighth position: the second transmission unit 252 rotates clockwise with the pin 1115. During rotation, the second transmission unit 252 drives the first transmission unit 251 to rotate clockwise through the connecting rod 255. Then, the first transmission unit 251 drives the first power moving contact assembly 23 to switch from the first closed position to the first open position and drives the second power moving contact assembly 24 to switch from the second open position to the second closed position. The circuit connection between the first power supply and the electrical equipment (at this time, the circuit connection between the second power supply and the electrical equipment is disconnected) is switched to the circuit connection between the second power supply and the electrical equipment (at this time, the circuit connection between the first power supply and the electrical equipment is disconnected).

[0071] When the second transmission unit 252 rotates from the eighth position to the seventh position: the second transmission unit 252 rotates counterclockwise with the pin 1115. During rotation, the second transmission unit 252 drives the first transmission unit 251 to rotate counterclockwise through the connecting rod 255. Then, the first transmission unit 251 drives the first power moving contact assembly 23 to switch from the first open position to the first closed position and the second power moving contact assembly 24 to switch from the second closed position to the second open position. The circuit connection between the second power supply and the electrical equipment (at this time, the circuit between the first power supply and the electrical equipment is disconnected) is switched to the circuit connection between the first power supply and the electrical equipment (at this time, the circuit between the second power supply and the electrical equipment is disconnected).

[0072] For reference Figure 3 In some embodiments, the second transmission unit 252 also has a ninth position between the seventh and eighth positions. Understandably, when the second transmission unit 252 is in the ninth position, the first transmission unit 251 is in the third position, the first power moving contact assembly 23 is in the first open position, and the second power moving contact assembly 24 is in the second open position.

[0073] In other words, when the second transmission unit 252 rotates from the seventh position to the ninth position: the second transmission unit 252 rotates clockwise with the pin 1115. When rotating, the second transmission unit 252 drives the main body 2511 of the first transmission unit 251 to rotate clockwise through the connecting rod 255. The first transmission unit 251 rotates from the first position to the third position. At the same time, the first transmission unit 251 drives the first power moving contact assembly 23 to switch from the first closed position to the first open position, so as to realize the circuit connection between the first power supply and the electrical equipment is switched to the circuit disconnection between the first power supply and the electrical equipment.

[0074] When the second transmission unit 252 rotates from the ninth position to the eighth position: the second transmission unit 252 rotates clockwise with the pin 1115. When rotating, the second transmission unit 252 drives the main body 2511 of the first transmission unit 251 to rotate clockwise through the connecting rod 255. The first transmission unit 251 rotates from the third position to the second position. At the same time, the first transmission unit 251 drives the second power moving contact assembly 24 to switch from the second open position to the second closed position, so as to realize the circuit disconnection between the second power supply and the electrical equipment and the circuit connection between the second power supply and the electrical equipment.

[0075] When the second transmission unit 252 rotates from the eighth position to the ninth position: the second transmission unit 252 rotates counterclockwise with the pin 1115. When rotating, the second transmission unit 252 drives the main body 2511 of the first transmission unit 251 to rotate counterclockwise through the connecting rod 255. The first transmission unit 251 rotates from the second position to the third position. At the same time, the first transmission unit 251 drives the second power moving contact assembly 24 to switch from the second closed position to the second open position, so as to realize the circuit connection between the second power supply and the electrical equipment is switched to the circuit disconnection between the second power supply and the electrical equipment.

[0076] When the second transmission unit 252 rotates from the ninth position to the seventh position: the second transmission unit 252 rotates counterclockwise with the pin 1115. When rotating, the second transmission unit 252 drives the main body 2511 of the first transmission unit 251 to rotate counterclockwise through the connecting rod 255. The first transmission unit 251 rotates from the third position to the first position. At the same time, the first transmission unit 251 drives the first power moving contact assembly 23 to switch from the first open position to the first closed position, so as to realize the circuit disconnection between the first power supply and the electrical equipment and the circuit connection between the first power supply and the electrical equipment.

[0077] like Figure 3 and Figure 7As shown, in some embodiments, the load-side assembly 26 may include a load-side terminal block 261, a first copper flexible wire 262, and a second copper flexible wire 263. A third terminal slot is provided on the surface of the first housing 11, and the load-side terminal block 261 is embedded in the third terminal slot. The wires of the electrical equipment (or power distribution system) are electrically connected to the load-side terminal block 261. The load-side terminal block 261 is electrically connected to the first contact 232 of the first power moving contact assembly 23 via the first copper flexible wire 262, and is electrically connected to the second contact 242 of the second power moving contact assembly 24 via the second copper flexible wire 263. It can be understood that the current from the first power supply is delivered to the electrical equipment through the first power stationary contact assembly 21, the first power moving contact assembly 23, the first copper flexible wire 262, and the load-side terminal block 261. The current from the second power source is delivered to the electrical equipment through the second power source stationary contact assembly 22, the second power source moving contact assembly 24, the second copper flexible wire 263, and the load terminal 261.

[0078] like Figure 2 and Figure 3 As shown, in some embodiments, the arc-extinguishing chamber 27 is installed in the first housing 11, and the arc-extinguishing chamber 27 is located between the first stationary contact 213 of the first power stationary contact assembly 21 and the second stationary contact 223 of the second power stationary contact assembly 22. The path of the first power moving contact assembly 23 switching back and forth between the first closed position and the first open position, and the path of the second power moving contact assembly 24 switching back and forth between the second closed position and the second open position, are both within the arc-extinguishing chamber 27. When the first power moving contact assembly 23 or the second power moving contact assembly 24 is opened, the arc-extinguishing chamber 27 extinguishes the arc.

[0079] like Figure 10 and Figure 11 As shown, in some embodiments, the drive mechanism 30 may include a second transmission assembly 31, an electromagnetic drive assembly 32, and a synchronizing rod 33. The second transmission assembly 31 is rotatably mounted within the second housing 12. The electromagnetic drive assembly 32 is mounted within the second housing 12 and cooperates with the second transmission assembly 31 to drive the second transmission assembly 31 to rotate. The synchronizing rod 33 connects the second transmission assembly 31 to the second transmission unit 252, and when the second transmission assembly 31 rotates, it drives the second transmission unit 252 to rotate synchronously via the synchronizing rod 33.

[0080] like Figure 12 and Figure 13As shown, in some embodiments, the second transmission assembly 31, driven by the electromagnetic drive assembly 32, can rotate back and forth between a fourth position and a fifth position. Understandably, when the second transmission assembly 31 is in the fourth position, the second transmission unit 252 is in the seventh position; when the second transmission assembly 31 is in the fifth position, the second transmission unit 252 is in the eighth position.

[0081] In other words, when the electromagnetic drive assembly 32 drives the second transmission assembly 31 to rotate from the fourth position to the fifth position, the second transmission assembly 31 rotates clockwise and drives the second transmission unit 252 to rotate clockwise, so as to rotate the second transmission unit 252 from the seventh position to the eighth position.

[0082] When the electromagnetic drive assembly 32 drives the second transmission assembly 31 to rotate from the fifth position to the fourth position, the second transmission assembly 31 rotates counterclockwise and drives the second transmission unit 252 to rotate counterclockwise, so as to rotate the second transmission unit 252 from the eighth position to the seventh position.

[0083] For reference Figure 11 In some embodiments, the second transmission component 31, driven by the electromagnetic drive component 32, also has a sixth position located between the fourth and fifth positions; when the second transmission component 31 is in the sixth position, the second transmission unit 252 is in the ninth position. It is understood that the electromagnetic drive component 32 can drive the second transmission component 31 to rotate from the fourth position to the sixth position, from the sixth position to the fifth position, from the fifth position to the sixth position, and from the sixth position to the fourth position.

[0084] In other words, when the electromagnetic drive assembly 32 drives the second transmission assembly 31 to rotate from the fourth position to the sixth position, the second transmission assembly 31 rotates clockwise and drives the second transmission unit 252 to rotate clockwise, so as to rotate the second transmission unit 252 from the seventh position to the ninth position.

[0085] When the electromagnetic drive assembly 32 drives the second transmission assembly 31 to rotate from the sixth position to the fifth position, the second transmission assembly 31 rotates clockwise and drives the second transmission unit 252 to rotate clockwise, so as to rotate the second transmission unit 252 from the ninth position to the eighth position.

[0086] When the electromagnetic drive assembly 32 drives the second transmission assembly 31 to rotate from the fifth position to the sixth position, the second transmission assembly 31 rotates counterclockwise and drives the second transmission unit 252 to rotate counterclockwise, so as to rotate the second transmission unit 252 from the eighth position to the ninth position.

[0087] When the electromagnetic drive assembly 32 drives the second transmission assembly 31 to rotate from the sixth position to the fourth position, the second transmission assembly 31 rotates counterclockwise and drives the second transmission unit 252 to rotate counterclockwise, so as to rotate the second transmission unit 252 from the ninth position to the seventh position.

[0088] like Figure 11 and Figure 12 As shown, in some embodiments, the second transmission assembly 31 may include a swing arm 311, a pivot shaft 312, a first connecting part 313, a second connecting part 314, and a third connecting part 315. The swing arm 311 is rotatably mounted within the second housing 12 via the pivot shaft 312. The first connecting part 313 is located at one end of the swing arm 311, the second connecting part 314 is located at the other end of the swing arm 311, and the third connecting part 315 is located on the swing arm 311 between the first connecting part 313 and the second connecting part 314. A second square groove 3120 is formed on the pivot shaft 312, and a synchronizing rod 33 is installed in the first square groove 2523 and the second square groove 3120 to connect the swing arm 311 to the body portion 2521 of the second transmission unit 252. The synchronizing rod 33, the first square groove 2523 and the second square groove 3120 are all square in shape. Of course, in other embodiments, the synchronizing rod 33, the first square groove 2523 and the second square groove 3120 may also be elliptical, triangular or irregular in shape.

[0089] Specifically, the electromagnetic drive assembly 32 pulls the first connecting part 313, the second connecting part 314 and the third connecting part 315 of the swing arm 311 respectively, so that the swing arm 311 rotates back and forth from the fourth position, the sixth position and the fifth position. The swing arm 311 drives the body part 2521 of the second transmission unit 252 to rotate synchronously through the synchronizing rod 33.

[0090] like Figure 11 , Figure 12 and Figure 13 As shown, in some embodiments, the electromagnetic drive assembly 32 may include a first electromagnetic drive unit 321 and a second electromagnetic drive unit 322. Both the first electromagnetic drive unit 321 and the second electromagnetic drive unit 322 are installed within the second housing 12; the first electromagnetic drive unit 321 is connected to the first connecting portion 313, and the second electromagnetic drive unit 322 is connected to the second connecting portion 314. Understandably, when the second transmission assembly 31 rotates from the fourth position to the fifth position, the second electromagnetic drive unit 322 pulls the second connecting portion 314, causing the swing arm 311 of the second transmission assembly 31 to rotate clockwise about the pivot axis 312. When the second transmission assembly 31 rotates from the fifth position to the fourth position, the first electromagnetic drive unit 321 pulls the first connecting portion 313, causing the swing arm 311 of the second transmission assembly 31 to rotate counterclockwise about the pivot axis 312.

[0091] Refer again Figure 12 and Figure 13 In some embodiments, the electromagnetic drive assembly 32 may include a third electromagnetic drive unit 323. The third electromagnetic drive unit 323 is installed within the second housing 12 and is connected to the third connecting portion 315. It is understood that when the second transmission assembly 31 rotates from the fourth position to the sixth position, the third electromagnetic drive unit 323 pulls the third connecting portion 315, causing the swing arm 311 of the second transmission assembly 31 to rotate clockwise about the pivot axis 312. When the second transmission assembly 31 rotates from the sixth position to the fifth position, the second electromagnetic drive unit 322 pulls the second connecting portion 314, causing the swing arm 311 of the second transmission assembly 31 to rotate clockwise about the pivot axis 312. When the second transmission assembly 31 rotates from the fifth position to the sixth position, the third electromagnetic drive unit 323 pulls the third connecting portion 315, causing the swing arm 311 of the second transmission assembly 31 to rotate counterclockwise about the pivot axis 312. When the second transmission component 31 rotates from the sixth position to the fourth position, the first electromagnetic drive unit 321 pulls the first connecting part 313, causing the swing arm 311 of the second transmission component 31 to rotate counterclockwise around the pivot axis 312.

[0092] like Figure 12 and Figure 13 As shown, in some embodiments, the first electromagnetic drive unit 321 may include a first attracting coil 3211 installed inside the housing 10. A first moving iron core 3212 is disposed inside the first attracting coil 3211, and a first connecting rod 3213 is hinged to the first moving iron core 3212. The first connecting rod 3213 is hinged to the first connecting portion 313. Understandably, when the first attracting coil 3211 is energized, a magnetic field is generated inside. Under the influence of the magnetic field, the first moving iron core 3212 moves away from the swing arm 311. The first moving iron core 3212 pulls the swing arm 311 counterclockwise around the pivot 312 via the first connecting rod 3213, causing the second transmission assembly 31 to rotate from the sixth position to the fourth position.

[0093] For reference Figure 11 In some embodiments, the second electromagnetic drive unit 322 may include a second attracting coil 3221 installed within the housing 10. A second moving iron core 3222 is disposed within the second attracting coil 3221, and a second connecting rod 3223 is hinged to the second moving iron core 3222. The second connecting rod 3223 is hinged to the second connecting portion 314. Understandably, when the second attracting coil 3221 is energized, a magnetic field is generated inside. Under the influence of this magnetic field, the second moving iron core 3222 moves away from the swing arm 311. The second moving iron core 3222 pulls the swing arm 311 clockwise around the pivot axis 312 via the second connecting rod 3223, causing the second transmission assembly 31 to rotate from the sixth position to the fifth position.

[0094] Refer again Figure 11 and Figure 12 In some embodiments, the third electromagnetic drive unit 323 may include a third attracting coil 3231 installed within the housing 10. The third attracting coil 3231 is provided with a third moving iron core 3232, and a third connecting rod 3233 is hinged to the third moving iron core 3232. The third connecting rod 3233 is hinged to the third connecting part 315. Understandably, when the third attracting coil 3231 is energized, a magnetic field is generated inside. Under the action of the magnetic field, the third moving iron core 3232 moves away from the swing arm 311. The third moving iron core 3232 pulls the swing arm 311 to rotate around the pivot 312 via the third connecting rod, so that the second transmission component 31 rotates from the fourth position to the sixth position or from the fifth position to the sixth position.

[0095] In summary, this utility model proposes an automatic transfer switch that is small in size, suitable for use in household indoor boxes, can be installed on a rail, and is simple and convenient to operate, as well as safe and reliable in performance.

[0096] It should be noted that, for those skilled in the art, without departing from the concept of this utility model, the above-mentioned technical features can be freely combined, and several modifications and improvements can be made, all of which fall within the protection scope of this utility model.

Claims

1. An automatic transfer switch, characterized in that, include: The main circuit mechanism (20) includes: First power stationary contact assembly (21); The second power stationary contact assembly (22) is disposed at a distance from the first power stationary contact assembly (21); The first power moving contact assembly (23) is movably disposed relative to the first power stationary contact assembly (21) in a first closed position and a first open position; when the first power moving contact assembly (23) is in the first closed position, it is in contact with the first power stationary contact assembly (21); when the first power moving contact assembly (23) is in the first open position, it is separated from the first power stationary contact assembly (21). The second power moving contact assembly (24) is movably disposed relative to the second power stationary contact assembly (22) between a second closed position and a second open position. When the second power moving contact assembly (24) is in the second closed position, it is in contact with the second power stationary contact assembly (22); when the second power moving contact assembly (24) is in the second open position, it is separated from the second power stationary contact assembly (22). The drive mechanism (30) includes an electromagnetic drive assembly (32), which is connected to the first power moving contact assembly (23) and the second power moving contact assembly (24) respectively, so as to drive the first power moving contact assembly (23) to move back and forth between the first closed position and the first open position and drive the second power moving contact assembly (24) to move back and forth between the second closed position and the second open position.

2. The automatic transfer switch according to claim 1, characterized in that, The main circuit mechanism (20) further includes a first transmission assembly (25), which includes a first transmission unit (251) and is connected to the electromagnetic drive assembly (32). The first transmission unit (251) can rotate back and forth between a first position and a second position under the drive of the electromagnetic drive assembly (32), thereby driving the first power moving contact assembly (23) to move back and forth between the first closed position and the first open position, and driving the second power moving contact assembly (24) to move back and forth between the second closed position and the second open position. When the first transmission unit (251) is in the first position, the first power moving contact assembly (23) is in the first closed position, and the second power moving contact assembly (24) is in the second open position; when the first transmission unit (251) is in the second position, the second power moving contact assembly (24) is in the second closed position, and the first power moving contact assembly (23) is in the first open position.

3. The automatic transfer switch according to claim 2, characterized in that, The first transmission unit (251) includes a main body (2511), a first drive unit (2512), and a second drive unit (2513). The main body (2511) is rotatably disposed between the first position and the second position. The first drive unit (2512) and the second drive unit (2513) are respectively disposed on the main body (2511) at intervals and are operably cooperated with the first power moving contact assembly (23) and the second power moving contact assembly (24), respectively. The first transmission assembly (25) further includes a first tension spring (253), one end of which is rotatably connected to the pivot (1111) of the main body (2511); the first power contact assembly (23) includes a first base (231), a first opening slot (230), a first contact (232), and a first hinge (233); the first contact (232) is disposed at one end of the first base (231), and the first opening slot (230) is disposed at one end of the first base (231). At the other end of the first base (231), the first hinge portion (233) is disposed on the first base (231) and located between one end of the first base (231) and the other end of the first base (231); the other end of the first tension spring (253) is rotatably connected to the first hinge portion (233), and the opening direction of the first opening groove (230) is away from the first hinge portion (233) and is operably engaged with the first drive portion (2512); The first transmission assembly (25) further includes a second tension spring (254), one end of which is rotatably connected to the rotating shaft (1111) of the main body (2511); the second power contact assembly (24) includes a second base (241), a second opening groove (240), a second contact (242), and a second hinge (243); the second contact (242) is disposed at one end of the second base (241), the second opening groove (240) is disposed at the other end of the second base (241), and the second hinge (243) is disposed on the second base (241) and located between one end of the second base (241) and the other end of the second base (241); the other end of the second tension spring (254) is rotatably connected to the second hinge (243), the opening direction of the second opening groove (240) is away from the second hinge (243), and it cooperates with the second drive part (2513).

4. The automatic transfer switch according to claim 3, characterized in that, The first substrate (231) includes a first abutting surface (234), which is disposed on the side of the first substrate (231) near the second substrate (241); the second substrate (241) includes a second abutting surface (244), which is disposed on the side of the second substrate (241) near the first substrate (231); the automatic changeover switch also includes a housing (10), which includes a limiting block (1113), which is located between the first substrate (231) and the second substrate (241), and the first abutting surface (234) and the second abutting surface (244) respectively cooperate with the limiting block (1113).

5. The automatic transfer switch according to claim 4, characterized in that, The first transmission unit (251) also has a third position located between the first position and the second position, wherein in the third position, the first power moving contact assembly (23) is located in the second open position and the second power moving contact assembly (24) is located in the second open position; The housing (10) further includes a first opening limiting groove (1112) and a second opening limiting groove (1114) spaced apart, the opening directions of the first opening limiting groove (1112) and the second opening limiting groove (1114) are both close to the limiting block (1113); the first power moving contact assembly (23) further includes a first limiting post (235) disposed on the first base (231) and cooperating with the first opening limiting groove (1112); the second power moving contact assembly (24) further includes a second limiting post (245) disposed on the second base (241) and cooperating with the second opening limiting groove (1114); In the third position, the first limiting post (235) abuts against the first opening limiting groove (1112), and the second limiting post (245) abuts against the second opening limiting groove (1114).

6. The automatic transfer switch according to any one of claims 1 to 5, characterized in that, The main circuit mechanism (20) further includes a first transmission assembly (25), the first transmission assembly (25) includes a first transmission unit (251), and the first transmission unit (251) includes a main body (2511). The drive mechanism (30) further includes a second transmission component (31) rotatably disposed, which is connected to the electromagnetic drive component (32) for transmission, so as to rotate back and forth between a fourth position and a fifth position under the drive of the electromagnetic drive component (32), thereby driving the first transmission unit (251) to rotate back and forth between the first position and the second position; the second transmission component (31) includes a swing arm (311) rotatably disposed and connected to the main body (2511) for transmission, and the two ends of the swing arm (311) are respectively provided with a first connecting part (313) and a second connecting part (314) that cooperate with the electromagnetic drive component (32); the electromagnetic drive component (32) drives the first connecting part (313) and the second connecting part (314) to move back and forth between the fourth position and the fifth position.

7. The automatic transfer switch according to claim 6, characterized in that, The swing arm (311) further includes a third connecting part (315) disposed between the first connecting part (313) and the second connecting part (314), and cooperates with the electromagnetic drive assembly (32); the second transmission assembly (31) under the drive of the electromagnetic drive assembly (32) also has a sixth position located between the fourth position and the fifth position; when the second transmission assembly (31) is located in the sixth position, the first transmission unit (251) is located in the third position.

8. The automatic transfer switch according to any one of claims 1 to 5, characterized in that, The main circuit mechanism (20) further includes a first transmission assembly (25), which includes a first transmission unit (251); the drive mechanism (30) further includes a second transmission assembly (31) that is rotatably disposed. The first transmission assembly (25) further includes a second transmission unit (252) rotatably disposed and a connecting rod (255) connecting the first transmission unit (251) and the second transmission unit (252). The second transmission unit (252) is connected to the second transmission assembly (31) in a transmission connection. The second transmission unit (252) can rotate back and forth between a seventh position and an eighth position under the drive of the second transmission assembly (31), thereby driving the first transmission unit (251) to rotate back and forth between the first position and the second position.

9. The automatic transfer switch according to claim 8, characterized in that, The automatic transfer switch also includes a housing (10); the first transmission unit (251) includes a main body (2511); the second transmission assembly (31) includes a swing arm (311) that is rotatably disposed and drivenly connected to the main body (2511). The second transmission unit (252) includes a rotatably disposed body part (2521) and an operating part (2522) disposed on the body part (2521), the operating part (2522) extending outside the housing (10); the drive mechanism (30) also includes a synchronizing rod (33), the synchronizing rod (33) connecting the body part (2521) to the swing arm (311); The second transmission unit (252) may also have a ninth position between the seventh position and the eighth position under the drive of the second transmission component (31); when the second transmission unit (252) is in the ninth position, the first transmission unit (251) is in the third position and the second transmission component (31) is in the sixth position.

10. The automatic transfer switch according to any one of claims 1 to 5, characterized in that, The automatic transfer switch also includes a housing (10); the main circuit mechanism (20) also includes a first transmission assembly (25), the first transmission assembly (25) includes a first transmission unit (251), the first transmission unit (251) includes a main body (2511); The drive mechanism (30) further includes a second transmission component (31) that is rotatably disposed. The second transmission component (31) includes a swing arm (311) that is rotatably disposed and transmittedly connected to the main body (2511). The two ends of the swing arm (311) are respectively provided with a first connecting part (313) and a second connecting part (314) that cooperate with the electromagnetic drive component (32). The swing arm (311) further includes a third connecting part (315) disposed between the first connecting part (313) and the second connecting part (314). The electromagnetic drive assembly (32) includes a first electromagnetic drive unit (321), the first electromagnetic drive unit (321) includes a first pull-in coil (3211) installed in the housing (10), a first moving iron core (3212) is provided in the first pull-in coil (3211), a first connecting rod (3213) is hinged on the first moving iron core (3212), and the first connecting rod (3213) is hinged to the first connecting part (313); It also includes a second electromagnetic drive unit (322), which includes a second attracting coil (3221) installed in the housing (10), a second moving iron core (3222) is provided in the second attracting coil (3221), and a second connecting rod (3223) is hinged on the second moving iron core (3222), and the second connecting rod (3223) is hinged to the second connecting part (314); It also includes a third electromagnetic drive unit (323), which includes a third pull-in coil (3231) installed in the housing (10). The third pull-in coil (3231) is provided with a third moving iron core (3232). A third connecting rod (3233) is hinged on the third moving iron core (3232). The third connecting rod (3233) is hinged to the third connecting part (315).

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