Automatic change-over switch

Abstract

The invention discloses an automatic change-over switch, which comprises a main circuit mechanism and a driving mechanism, and comprises a first power supply static contact assembly, a second power supply static contact assembly, a first power supply moving contact assembly and a second power supply moving contact assembly, the second power supply static contact assembly and the first power supply static contact assembly are arranged at an interval; the first power supply moving contact assembly is arranged to move back and forth between a first closing position and a first opening position relative to the first power supply static contact assembly; the second power supply moving contact assembly is movably arranged between a second switching-on position and a second switching-off position relative to the second power supply static contact assembly; the driving mechanism comprises an electromagnetic driving assembly. The electromagnetic driving assembly is in transmission connection with the first power supply moving contact assembly and the second power supply moving contact assembly. The automatic change-over switch electric appliance is small in size, relatively compact in structure, capable of being applied to household boxes and easy and convenient to operate.

Description

Technical Field

[0001] The present invention relates to the technical field of electrical appliances, and in particular to an automatic transfer switch. Background Art

[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. When the main power fails, it can quickly switch to the backup power supply to ensure normal power supply to the equipment.

[0003] With the implementation and promotion of the dual carbon strategy, the new energy industry is developing rapidly, with photovoltaic (solar) power generation taking a more prominent position. User energy storage systems are now available to provide users with solar power, effectively saving electricity costs and ensuring stable power consumption.

[0004] With the increasing popularity of energy storage systems for home users and industrial and commercial renewable energy power generation systems, home users often need to use both solar power and mains electricity, necessitating the use of dual-power automatic transfer switches. However, traditional automatic transfer switches are bulky and difficult to use in indoor home environments. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide an improved automatic transfer switch.

[0006] The technical solution adopted by the present invention to solve its technical problem is:

[0007] An automatic transfer switch, comprising:

[0008] Main circuit mechanism, including:

[0009] a first power static contact assembly;

[0010] a second power static contact assembly, spaced apart from the first power static contact assembly;

[0011] a first power moving contact assembly, movably arranged relative to the first power static contact assembly between a first closing position and a first opening position; when the first power moving contact assembly is in the first closing position, it contacts the first power static contact assembly; when the first power moving contact assembly is in the first opening position, it separates from the first power static contact assembly;

[0012] a second power moving contact assembly, movably arranged relative to the second power static contact assembly between a second closing position and a second opening position, wherein the second power moving contact assembly is in contact with the second power static contact assembly when the second power moving contact assembly is in the second closing position; and is separated from the second power static contact assembly when the second power moving contact assembly is in the second opening position; and

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

[0014] The implementation of the present invention has the following beneficial effects: the automatic transfer switch electrical appliance is small in size and relatively compact in structure, can be applied to household indoor boxes, is simple and convenient to operate, and has safe and reliable performance. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0016] Figure 1 is a schematic structural diagram of an automatic transfer switch from a first perspective in some embodiments of the present invention;

[0017] Figure 2 yes Figure 1 Schematic diagram of the exploded three-dimensional structure of the main circuit mechanism shown;

[0018] Figure 3 yes Figure 1 A front view structural schematic diagram showing 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 housing is deleted;

[0019] Figure 4 yes Figure 2 A front view structural schematic diagram showing that the first power moving contact assembly is located in a first closing position and the second power moving contact assembly is located in a second opening position;

[0020] Figure 5 yes Figure 2 A front view structural schematic diagram showing that the first power moving contact assembly is located in a first open position and the second power moving contact assembly is located in a second closed position;

[0021] Figure 6 yes Figure 2 The schematic diagram of the front structure of the first tension spring and the second tension spring is shown;

[0022] Figure 7 yes Figure 2 A schematic diagram of the combined three-dimensional structure 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 schematic diagram of the three-dimensional structure of the first transmission unit is shown;

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

[0025] Figure 10 yes Figure 1 A schematic diagram of the combined three-dimensional structure of the second housing and the driving mechanism is shown;

[0026] Figure 11 yes Figure 10 The schematic diagram of the front structure of the second transmission assembly in the sixth position after the fourth half shell is deleted is shown;

[0027] Figure 12 yes Figure 11 The front view of the second transmission assembly is shown in the fourth position;

[0028] Figure 13 yes Figure 11 The front view structural schematic diagram of the second transmission assembly is shown in the fifth position. DETAILED DESCRIPTION

[0029] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific embodiments of the present invention are now described in detail with reference to the accompanying drawings. In the following description, it should be understood that the directions or positional relationships indicated by "front", "back", "up", "down", "left", "right", "longitudinal", "horizontal", "vertical", "horizontal", "top", "bottom", "inside", "outside", "head", "tail", etc. are based on the directions or positional relationships shown in the accompanying drawings and are constructed and operated in specific directions. They are only for the convenience of describing the technical solution and do not indicate that the devices or components referred to must have specific directions. Therefore, they should not be understood as limiting the present invention.

[0030] It should also be noted that, unless otherwise expressly specified and limited, terms such as "installed", "connected", "connected", "fixed", and "set" should be understood in a broad sense. For example, they can be fixedly connected, detachably connected, or integrated; they can be mechanically connected or electrically connected; they can be directly connected or indirectly connected through an intermediate medium, and they can be internal connections between two elements or interactions between two elements. When an element is referred to as being "on" or "under" another element, the element can be "directly" or "indirectly" located on the other element, or there may be one or more intervening elements. The terms "second", "second", and "third" are only used to facilitate the description of the present technical solution and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "second", "second", and "third" can explicitly or implicitly include one or more of the features. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0031] In the following description, specific details such as particular system structures and techniques are provided for purposes of illustration, not limitation, to facilitate a thorough understanding of the embodiments of the present invention. However, it will be apparent to those skilled in the art that the present invention may be practiced in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, 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 the present invention to solve its technical problem is:

[0033] like Figure 1 、 Figure 2 and Figure 10 As shown, some embodiments of the present invention 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 source and a second power source, and can automatically switch to the second power source under the drive of the drive mechanism 30 when the first power source fails or the power is cut off; or can automatically switch to the first power source under the drive of the drive mechanism 30 when the second power source fails or the power is cut off.

[0034] It should be explained that at least one main circuit mechanism 20 can be arbitrarily set according to the actual industrial application quantity. The main circuit mechanisms 20 have the same structure. Only the structure of one of the main circuit mechanisms 20 is described in detail below. In addition, the "left side, right side, upper side, lower side, top and bottom" appearing below are defined by the illustrated orientations in the drawings of 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 mounted in the first housing 11, and the drive mechanism 30 is mounted 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 may be connected to each other by bonding, splicing, or snapping.

[0036] The number of first shells 11 and second shells 12 can be combined at will. In other words, the number of main circuit mechanisms 20 and drive mechanisms 30 can be combined at will. For example, four first shells 11 (each with a main circuit mechanism 20 installed inside) and one second shell 12 (with a drive mechanism 30 installed inside) can be used in combination. Of course, in other embodiments, three, five, or eight (any number) first shells 11 (each with a main circuit mechanism 20 installed inside) and one, two, or three (any number) second shells 12 (with a drive mechanism 30 installed inside) can be used in combination.

[0037] Continue to refer 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 to the first half-housing 111. A first guide rail mounting groove 113 is provided on one side of 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 body, facilitating 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 within a household box (electricity 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 bonding, or other methods.

[0038] like Figure 2 and Figure 9As shown, in some embodiments, the first shell 11 also includes a rotating shaft 1111 installed on the inner wall of the first half shell 111 and / or the second half shell 112, a first opening limiting groove 1112 and a second opening limiting groove 1114 spaced apart on the inner wall of the first half shell 111 and / or the second half shell 112, and a limiting block 1113 arranged on the inner wall of the first half shell 111 and / or the second half shell 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 direction is toward 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 spliced ​​with the third half housing 121. A second guide rail mounting slot 123 is provided on one side of the third half housing 121 and the fourth half housing 122. The third and fourth half housings 121, 122 are spliced ​​together to form a box structure, facilitating installation of the drive mechanism 30 within the second housing 12. The first guide rail mounting slot 113 and the second guide rail mounting slot 123 are located on the same horizontal plane. The third and fourth half housings 121, 122 can be mounted on a guide rail within a household box (electricity meter box) via the second guide rail mounting slot 123. In other embodiments, the third and fourth half housings 121, 122 may be connected by screws, adhesive bonding, 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 static contact assembly 21, a second power static 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 static contact assembly 21 and the second power static contact assembly 22 are spaced apart and arranged in the first housing 11. The first power static contact assembly 21 is electrically connected to the first power source, and the second power static contact assembly 22 is electrically connected to the second power source. The arc extinguishing chamber 27 is arranged between the first power static contact assembly 21 and the second power static contact assembly 22; the first power moving contact assembly 23 and the second power moving contact assembly 24 are movably arranged in the first shell 11, and one end of the first power moving contact assembly 23 and the second power moving contact assembly 24 extends into the arc extinguishing chamber 27; the first transmission assembly 25 is arranged in the first shell 11, and is respectively matched with the other end of the first power moving contact assembly 23 and the second power moving contact assembly 24; 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 electrical equipment (power distribution system).

[0041] Continue to refer Figure 3 and Figure 4 In some embodiments, the first transmission assembly 25 can drive the first power movable contact assembly 23 to move back and forth between a first closed position and a first open position relative to the first power static contact assembly 21. When the first power movable contact assembly 23 is in the first closed position, it contacts the first power static contact assembly 21; when the first power movable contact assembly 23 is in the first open position, it separates from the first power static contact assembly 21. It will be understood that the first power source is electrically connected to the first power static contact assembly 21. When the first power movable contact assembly 23 contacts the first power static contact assembly 21, the current from the first power source passes through the first power static contact assembly 21, the first power movable contact assembly 23, and the load-end assembly 26 to power the electrical equipment. Conversely, when the first power movable contact assembly 23 separates from the first power static contact assembly 21, the current between the first power movable contact assembly 23 and the first power static contact assembly 21 is interrupted.

[0042] like Figure 4 and Figure 5 As shown, the first transmission assembly 25 can also drive the second power moving contact assembly 24 to be movable back and forth relative to the second power static 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 contacts the second power static contact assembly 22; when the second power moving contact assembly 24 is in the second open position, it separates from the second power static contact assembly 22. It can be understood that the second power moving contact assembly 24 is electrically connected to the second power source. When the second power moving contact assembly 24 contacts the second power static contact assembly 22, the current from the second power source passes through the second power static contact assembly 22, the second power moving contact assembly 24, and the load end assembly 26 to power the electrical equipment. Conversely, when the second power moving contact assembly 24 separates from the second power static contact assembly 22, the current between the second power moving contact assembly 24 and the second power static contact assembly 22 is interrupted.

[0043] That is, the first transmission assembly 25 can mechanically drive the first power moving contact assembly 23 from the first open position to the first closed position, so that the first power moving contact assembly 23 contacts the first power static contact assembly 21, and the circuit between the first power source and the power-consuming device is connected; at this time, the second power moving contact assembly 24 remains in the second open position. Alternatively, the first transmission assembly 25 can mechanically drive the first power moving contact assembly 23 from the first closed position to the first open position, so that the first power moving contact assembly 23 disengages from the first power static contact assembly 21, and the circuit between the first power source and the power-consuming device is disconnected; at this time, the second power moving contact assembly 24 remains in the second open position.

[0044] Alternatively, the first transmission assembly 25 can mechanically drive the second power moving contact assembly 24 from the second open position to the second closed position, causing the second power moving contact assembly 24 to contact the second power static contact assembly 22, thereby connecting the circuit between the second power source and the power-consuming device; at this time, the first power moving contact assembly 23 remains in the first open position. Alternatively, the first transmission assembly 25 can mechanically drive the second power moving contact assembly 24 from the second closed position to the second open position, causing the second power moving contact assembly 24 to disengage from the second power static contact assembly 22, thereby disconnecting the circuit between the second power source and the power-consuming device; at this time, the first power moving contact assembly 23 remains in the first open position.

[0045] In summary, the first transmission assembly 25 drives the second power moving contact assembly 24 to separate from the second power static contact assembly 22, and then the first transmission assembly 25 drives the first power moving contact assembly 23 to contact the first power static contact assembly 21, switching the second power supply to the electrical device for powering the electrical device to the first power supply. Alternatively, the first transmission assembly 25 drives the first power moving contact assembly 23 to separate, and then the first transmission assembly 25 drives the second power moving contact assembly 24 to contact the second power static contact assembly 22, switching the first power supply to the electrical device for powering the electrical device to the second power supply.

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

[0047] Reference again Figure 3 and Figure 4 In some embodiments, the second power static contact assembly 22 may include a second power terminal 221, a second wire 222, and a second static contact 223. A second terminal slot is defined on the surface of the first housing 11. The second power terminal 221 is embedded in the slot. The wire of the second power source is electrically connected to the second power terminal 221. The second wire 222 electrically connects the second power terminal 221 and the second static contact 223. The second static contact 223 is mounted within the first housing 11. The second static 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 movable 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 and 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 operatively engaged with the first transmission assembly 25 described above. The first abutment surface 234 is disposed on a side of the first base 231 near the second power movable 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 opening 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 slot wall of the first open limiting slot 1112. When the first power moving contact assembly 23 is in the first closing 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 slot wall of the first open limiting slot 1112.

[0050] like Figure 5 and Figure 7 As shown, in some embodiments, the second power moving 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 is 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 is operatively engaged with the first transmission assembly 25. The second abutment surface 244 is disposed on a side of the second base 241 that is close to 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 abutting surface 244 abuts against the lower surface of the limiting block 1113, and the second limiting post 245 abuts against the wall of the second open limiting slot 1114. When the second power moving contact assembly 24 is in the second closed position, the second abutting surface 244 disengages from the lower surface of the limiting block 1113, and the second limiting post 245 disengages from the wall of the second open limiting slot 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 the first closed position and the first open position, or mechanically drives the second power moving contact assembly 24 to switch back and forth between the second closed position and the 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. Manually rotating the portion of the second transmission unit 252 extending from the first housing 11 rotates the second transmission unit 252, which then 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 is used to provide 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 is used to provide 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 first tension spring 253 and the second tension spring 254 are movably mounted as hooks. Of course, the first tension spring 253 and the second tension spring 254 can also be mounted by means of sleeves, 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 driving portion 2512, a second driving portion 2513, an axial hole 2514, and a first connecting rod connecting portion 2515. The main body 2511 has a D-shaped structure, with the axial hole 2514 defined therein. The main body 2511 is rotatably mounted on the aforementioned rotating shaft 1111 via the axial hole 2514. The first driving portion 2512 and the second driving portion 2513 are spaced apart from each other on the main body 2511. The first driving portion 2512 engages with the aforementioned first opening slot 230, and the second driving portion 2513 engages with the aforementioned second opening slot 240. The first connecting rod connecting portion 2515 is disposed on the main body 2511, and one end of the connecting rod 255 is rotatably mounted on the first connecting rod connecting portion 2515.

[0055] In some embodiments, the first transmission unit 251 can be driven by the second transmission unit 252 to a first position (see Figure 4 ) and a second position (see Figure 5 ), thereby driving the first power moving contact assembly 23 to move back and forth between a first closed position and a first open position, and 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] It can be understood that when the first transmission unit 251 rotates from the first position to the second position, the first transmission unit 251 drives the first power moving contact assembly 23 to move from the first closing position to the first opening position, and at the same time drives the second power moving contact assembly 24 to move from the first opening position to the second closing position, so that the first power supply is connected to the universal electrical equipment and the second power supply is connected to the universal electrical equipment. When the first transmission unit 251 rotates from the second position to the first position, the first transmission unit 251 drives the first power moving contact assembly 23 to move from the first opening position to the first closing position, and at the same time drives the second power moving contact assembly 24 to move from the second closing position to the second opening position, so that the second power supply is connected to the universal electrical equipment and the first power supply is connected to the universal electrical equipment.

[0057] In some embodiments, the first transmission unit 251 further has a third position between the second position and the second position under the drive of the second transmission unit 252 (see Figure 4 and Figure 6In the third position, the first power moving contact assembly 23 is located at the first opening position, and the second power moving contact assembly 24 is located at the second opening position.

[0058] It can be understood that the first transmission unit 251 is rotated by the drive of the second transmission unit 252. The first transmission unit 251 can rotate from the first position to the third position, the third position to the second position, the second position to the third position, and the third position to the 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 opening position to the first closing position. At this time, the second power moving contact assembly 24 remains in the second opening 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 closing position to the first opening position. At this time, the second power moving contact assembly 24 remains in the second opening 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 opening position to the second closing position; at this time, the first power moving contact assembly 23 remains in the first opening 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 to move from the second closing position to the second opening position; at this time, the first power moving contact assembly 23 remains in the first opening 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, how the first transmission unit 251 drives the first power moving contact assembly 23 to move from the first opening position to the first closing position when the first transmission unit 251 rotates from the third position to the first position. The specific principle is: the main body 2511 of the first transmission unit 251 is close to one end of the first power moving contact assembly 23 and rotates counterclockwise downward along the axis of the rotating shaft 1111. During the rotation, the first driving part 2512 on the main body 2511 pushes the first opening groove 230 of the first power moving contact assembly 23 to be squeezed downward, and at the same time, the first abutting surface 234 of the first power moving contact assembly 23 is subjected to the upward support force from the limit block 1113. Under the action of this combined force, the first power moving contact assembly 23 will first move along the upper surface of the limit block 1113 in the direction away from the main body 2511. At the same time, the first power The first limiting column 235 of the moving contact assembly 23 disengages from the groove wall of the first open limiting groove 1112. At the same time, the first power moving contact assembly 23 rotates upward clockwise around the first driving part 2512 of the first transmission unit 251 through the first opening groove 230, and 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 pulling direction of the first tension spring 253 exceeds 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, and the first power moving contact assembly 23 rotates upward rapidly under the action of the pulling force of the first tension spring 253, and contacts the first static contact 213 of the first power static contact assembly 21, thereby realizing the connection between the first power supply and the electrical equipment circuit.

[0065] Continue to refer Figure 3 and Figure 4, how does the first transmission unit 251 drive the first power moving contact assembly 23 to move from the first closing position to the first opening position when the first transmission unit 251 rotates from the first position to the third position? The specific principle is: the first transmission unit 251, one end close to the first power moving contact assembly 23, rotates clockwise upward. During the rotation, the first driving portion 2512 on the main body 2511 pushes the first opening slot 230 of the first power moving contact assembly 23 to be squeezed upward. At the same time, the first contact 232 of the first power moving contact assembly 23 is supported downward by the first static contact 213. Under the action of this combined force, the first power moving contact assembly 23 passes through the first opening slot 230 and moves around the first driving portion 2512 of the first transmission unit 251 Rotating counterclockwise downward, when the pulling direction of the first tension spring 253 exceeds the first driving part 2512 of the first transmission unit 251, the first power moving contact assembly 23 rotates downward rapidly under the action of the pulling force of the first tension spring 253 and moves away from the first power static contact assembly 21. At the same time, the second driving part 2513 of the first transmission unit 251 returns to the second opening groove 240; finally, the first abutting surface 234 of the first power moving contact assembly 23 abuts against the upper surface of the limit block 1113, and moves along the upper surface of the limit block 1113 toward the main body 2511 until the first limiting column 235 of the first power moving contact 23 abuts against the groove wall of the first opening limiting groove 1112, and the circuit of the first power supply and the electrical equipment is disconnected.

[0066] like Figure 3 and Figure 5As shown, how the first transmission unit 251 drives the second power moving contact assembly 24 to move from the second opening position to the second closing position when the first transmission unit 251 rotates from the third position to the second position. The specific principle is: the main body 2511 of the first transmission unit 251 is close to one end of the second power moving contact assembly 24 and rotates upward clockwise along the axis of the rotating shaft 1111. During the rotation, the second driving part 2513 on the main body 2511 of the first transmission unit 251 pushes the second opening groove 240 of the second power moving contact assembly 24 to be squeezed upward, and at the same time, the second abutting surface 244 of the second power moving contact assembly 24 is subjected to the downward support force from the limit block 1113. Under the action of this combined force, the second power moving contact assembly 24 will first move along the lower surface of the limit block 1113 in the direction away from the main body 2511, and at the same time , the second limiting column 235 of the second power moving contact assembly 24 disengages from the groove wall of the second open limiting groove 1114, and 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 open groove 240, and 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 pulling direction of the second tension spring 254 exceeds 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, and the second power moving contact assembly 24 rotates downward rapidly under the action of the pulling force of the second tension spring 254, and contacts the second static contact 223 of the second power static contact assembly 22, thereby realizing the connection between the second power supply and the electrical equipment circuit.

[0067] Continue to refer Figure 3 and Figure 5, the specific principle of how the first transmission unit 251 drives the second power moving contact assembly 24 to move from the second closing position to the second opening position when the first transmission unit 251 rotates from the second position to the third position: the main body 2511 of the first transmission unit 251 rotates counterclockwise downward at one end close to the second power moving contact assembly 24. During the rotation, the second driving portion 2513 on the main body 2511 pushes the second opening slot 240 of the second power moving contact assembly 24 downward, and at the same time, the second contact 242 of the second power moving contact assembly 24 is supported upward by the second static contact 223. Under the action of this combined force, the second power moving contact assembly 24 passes through the second opening slot 240 and moves around the second driving portion 251 of the first transmission unit 251. 3 rotates upward clockwise. When the pulling direction of the second tension spring 254 exceeds the second driving portion 2513 of the first transmission unit 251, the second power moving contact assembly 24 rotates upward rapidly under the action of the pulling force of the second tension spring 254 and moves away from the second power static contact assembly 22. At the same time, the first driving portion 2512 of the first transmission unit 251 returns to the first open groove 230. Finally, the second abutting surface 244 of the second power moving contact assembly 24 abuts against the lower surface of the limit block 1113 and moves along the lower surface of the limit block 1113 toward the main body 2511 until the second limiting column 245 of the second power moving contact assembly 24 abuts against the groove wall of the second open limiting groove 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 main body 2521, an operating portion 2522, a first square slot 2523, and a second connecting rod connecting portion 2524. Specifically, a pin 1115 is provided on the inner wall of the first housing 11. The main body 2521 is rotatably mounted on the pin 1115. The operating portion 2522 is disposed on the main body 2521 and extends out of the first housing 11. The first square slot 2523 is defined at the rotation axis of the main body 2521. The second connecting rod connecting portion 2524 is disposed on the main body 2521. The other end of the connecting rod 255 is rotatably mounted on the second connecting rod connecting portion 2524. It is understood that when a worker rotates the operating portion 2522, the main body 2521 rotates along the pin 1115, causing the main body 2521 to rotate the main body 2511 of the first transmission unit 251 through 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. It can be understood that 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 shaft 1115, and when rotating, the second transmission unit 252 drives the first transmission unit 251 to rotate clockwise through the connecting rod 255, and then the first transmission unit 251 drives the first power moving contact assembly 23 to switch from the first closing position to the first opening position and drives the second power moving contact assembly 24 to switch from the second opening position to the second closing position, switching from 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) to 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).

[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 shaft 1115, and during the rotation, the second transmission unit 252 drives the first transmission unit 251 to rotate counterclockwise through the connecting rod 255, and 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, switching 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) 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 further has a ninth position between the seventh position and the eighth position. It is understood that 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 shaft 1115, and during the rotation, the second transmission unit 252 drives the main body 2511 of the first transmission unit 251 to rotate clockwise through the connecting rod 255, and 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 supply moving contact assembly 23 to switch from the first closing position to the first opening position, so as to realize the switching of the circuit connection between the first power supply and the electrical equipment 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 shaft 1115. During the rotation, 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 supply moving contact assembly 24 to switch from the second opening position to the second closing position, so as to realize the circuit disconnection between the second power supply and the electrical equipment and switch the circuit between the second power supply and the electrical equipment to the connection.

[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 shaft 1115. During the rotation, 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 supply moving contact assembly 24 to switch from the second closing position to the second opening position, so as to realize the circuit connection between the second power supply and the electrical equipment and switch 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 shaft 1115. During the rotation, 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 supply moving contact assembly 23 to switch from the first opening position to the first closing position, so as to realize the circuit disconnection between the first power supply and the electrical equipment and switch 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-end assembly 26 may include a load-end terminal 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-end terminal 261 is embedded in the third terminal slot. The wires of the electrical equipment (or power distribution system) are electrically connected to the load-end terminal 261. The load-end terminal 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 the load-end terminal 261 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 of the first power supply is transmitted to the electrical equipment through the first power static contact assembly 21, the first power moving contact assembly 23, the first copper flexible wire 262, and the load-end terminal 261. The current of the second power supply is delivered to the power-consuming device through the second power static contact assembly 22 , the second power movable contact assembly 24 , the second copper flexible wire 263 and the load-end 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 is located between the first static contact 213 of the first power static contact assembly 21 and the second static contact 223 of the second power static contact assembly 22. The path for the first power moving contact assembly 23 to switch back and forth between the first closed position and the first open position, and the path for the second power moving contact assembly 24 to switch 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 open, the arc extinguishing chamber 27 serves to extinguish 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 synchronization 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 synchronization rod 33 connects the second transmission assembly 31 to the second transmission unit 252. When the second transmission assembly 31 rotates, the synchronization rod 33 drives the second transmission unit 252 to rotate synchronously.

[0080] like Figure 12 and Figure 13As shown, in some embodiments, the second transmission assembly 31 can rotate back and forth between a fourth position and a fifth position under the drive of the electromagnetic drive assembly 32. It can be understood that 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 driving 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 to rotate the second transmission unit 252 from the seventh position to the eighth position.

[0082] When the electromagnetic driving 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, thereby rotating the second transmission unit 252 from the eighth position to the seventh position.

[0083] For reference Figure 11 In some embodiments, the second transmission assembly 31, driven by the electromagnetic drive assembly 32, further has a sixth position between the fourth and fifth positions. When the second transmission assembly 31 is in the sixth position, the second transmission unit 252 is in the ninth position. It is understood that the electromagnetic drive assembly 32 drives the second transmission assembly 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 finally from the sixth position to the fourth position.

[0084] In other words, when the electromagnetic driving 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 to rotate the second transmission unit 252 from the seventh position to the ninth position.

[0085] When the electromagnetic driving 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, thereby rotating the second transmission unit 252 from the ninth position to the eighth position.

[0086] When the electromagnetic driving 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, thereby rotating the second transmission unit 252 from the eighth position to the ninth position.

[0087] When the electromagnetic driving 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, thereby rotating 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 portion 313, a second connecting portion 314, and a third connecting portion 315. The swing arm 311 is rotatably disposed within the second housing 12 via the pivot shaft 312. The first connecting portion 313 is disposed at one end of the swing arm 311, the second connecting portion 314 is disposed at the other end of the swing arm 311, and the third connecting portion 315 is disposed on the swing arm 311 and located between the first connecting portion 313 and the second connecting portion 314. A second square slot 3120 is defined on the pivot shaft 312, and the synchronization rod 33 is mounted within the first square slot 2523 and the second square slot 3120 to connect the swing arm 311 to the main body 2521 of the second transmission unit 252. The synchronization rod 33, the first square groove 2523 and the second square groove 3120 are all square structures. Of course, in other embodiments, the synchronization rod 33, the first square groove 2523 and the second square groove 3120 can also be elliptical structures, triangular structures, irregular shapes, etc.

[0089] Specifically, the electromagnetic drive assembly 32 pulls the first connection part 313, the second connection part 314 and the third connection 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, and the swing arm 311 drives the main body 2521 of the second transmission unit 252 to rotate synchronously through the synchronization 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 mounted 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. It is understood that 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] Reference 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 mounted within the second housing 12 and 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 assembly 31 rotates from the sixth position to the fourth position, the first electromagnetic driving unit 321 pulls the first connecting portion 313 to rotate the swing arm 311 of the second transmission assembly 31 counterclockwise about the pivot shaft 312 .

[0092] like Figure 12 and Figure 13 As shown, in some embodiments, the first electromagnetic drive unit 321 may include a first pull-in coil 3211 installed in the housing 10. A first movable iron core 3212 is disposed within the first pull-in coil 3211. A first connecting rod 3213 is hingedly disposed on the first movable iron core 3212, and the first connecting rod 3213 is hingedly connected to the first connecting portion 313. It can be understood that when the first pull-in coil 3211 is energized, a magnetic field is generated internally. Under the influence of the magnetic field, the first movable iron core 3212 moves away from the swing arm 311. The first movable iron core 3212 pulls the swing arm 311 through the first connecting rod 3213 to rotate the pivot shaft 312 counterclockwise, thereby rotating the second transmission assembly 31 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 pull-in coil 3221 mounted within the housing 10. A second movable iron core 3222 is disposed within the second pull-in coil 3221. A second connecting rod 3223 is hingedly disposed on the second movable iron core 3222. The second connecting rod 3223 is hingedly connected to the second connecting portion 314. It is understood that when the second pull-in coil 3221 is energized, a magnetic field is generated within it. Under the influence of the magnetic field, the second movable iron core 3222 moves away from the swing arm 311. The second movable iron core 3222 pulls the swing arm 311 via the second connecting rod 3223 to rotate the pivot shaft 312 clockwise, thereby rotating the second transmission assembly 31 from the sixth position to the fifth position.

[0094] Reference again Figure 11 and Figure 12 In some embodiments, the third electromagnetic drive unit 323 may include a third pull-in coil 3231 installed in the housing 10. The third pull-in coil 3231 is provided with a third movable iron core 3232. A third connecting rod 3233 is hingedly provided on the third movable iron core 3232. The third connecting rod 3233 is hingedly connected to the third connecting portion 315. It can be understood that when the third pull-in coil 3231 is energized, a magnetic field is generated inside. Under the influence of the magnetic field, the third movable iron core 3232 moves in a direction away from the swing arm 311. The third movable iron core 3232 pulls the swing arm 311 through the third connecting rod to rotate the pivot shaft 312, thereby rotating the second transmission assembly 31 from the fourth position to the sixth position or from the fifth position to the sixth position.

[0095] In summary, the present invention proposes an automatic transfer switch electrical appliance which is small in size, suitable for household indoor boxes, can be installed on guide rails, and has simple and convenient operation, safe and reliable performance.

[0096] It should be pointed out that, for ordinary technicians in this field, without departing from the concept of the present invention, the above technical features can be freely combined, and several variations and improvements can be made, all of which fall within the scope of protection of the present invention.

Claims

1. An automatic transfer switch, characterized in that: include: The main circuit mechanism (20) comprises: A first power static contact assembly (21); a second power static contact assembly (22) spaced apart from the first power static contact assembly (21); A first power moving contact assembly (23) is movably arranged between a first closing position and a first opening position relative to the first power static contact assembly (21); when the first power moving contact assembly (23) is in the first closing position, it contacts the first power static contact assembly (21); when the first power moving contact assembly (23) is in the first opening position, it separates from the first power static contact assembly (21); A second power movable contact assembly (24) is movably arranged between a second closing position and a second opening position relative to the second power static contact assembly (22); when the second power movable contact assembly (24) is in the second closing position, it contacts the second power static contact assembly (22); and when the second power movable contact assembly (24) is in the second opening position, it separates from the second power static contact assembly (22); and A drive mechanism (30) includes an electromagnetic drive assembly (32), wherein the electromagnetic drive assembly (32) is respectively connected to the first power moving contact assembly (23) and the second power moving contact assembly (24) for driving the first power moving contact assembly (23) to move back and forth between the first closing position and the first opening position, and driving the second power moving contact assembly (24) to move back and forth between the second closing position and the second opening position.

2. The automatic transfer switch according to claim 1, characterized in that: The main circuit mechanism (20) further comprises a first transmission assembly (25), the first transmission assembly (25) comprising a first transmission unit (251), the first transmission unit (251) being in transmission connection with 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 supply moving contact assembly (23) to move back and forth between the first closing position and the first opening position, and driving the second power supply moving contact assembly (24) to move back and forth between the second closing position and the second opening position; When the first transmission unit (251) is located at the first position, the first power moving contact assembly (23) is located at the first closing position, and the second power moving contact assembly (24) is located at the second opening position; when the first transmission unit (251) is located at the second position, the second power moving contact assembly (24) is located at the second closing position, and the first power moving contact assembly (23) is located at the first opening position.

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

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

5. The automatic transfer switch according to claim 4, characterized in that: The first transmission unit (251) further has a third position located between the second position and the second position, and in the third position, the first power moving contact assembly (23) is located at the second opening position, and the second power moving contact assembly (24) is located at the second opening position; The housing (10) further comprises a first opening limiting groove (1112) and a second opening limiting groove (1114) arranged at intervals, and 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 comprises a first limiting column (235) arranged on the first base (231) and matched with the first opening limiting groove (1112); the second power moving contact assembly (24) further comprises a second limiting column (245) arranged on the second base (241) and matched with the second opening limiting groove (1114); In the third position, the first limiting column (235) abuts against the first opening limiting groove (1112), and the second limiting column (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 driving mechanism (30) further comprises a second transmission assembly (31) which is rotatably arranged, and the second transmission assembly (31) is in transmission connection with the electromagnetic driving assembly (32) so as to rotate back and forth between a fourth position and a fifth position under the drive of the electromagnetic driving assembly (32), thereby driving the first transmission unit (251) to rotate back and forth between the first position and the second position; the second transmission assembly (31) comprises a swing arm (311) which is rotatably arranged and in transmission connection with the main body (2511), and the two ends of the swing arm (311) are respectively provided with a first connecting portion (313) and a second connecting portion (314) which respectively cooperate with the electromagnetic driving assembly (32); the electromagnetic driving assembly (32) drives the first connecting portion (313) and the second connecting portion (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 portion (315) arranged between the first connecting portion (313) and the second connecting portion (314), and cooperates with the electromagnetic drive component (32); the second transmission component (31) also has a sixth position located between the fourth position and the fifth position under the drive of the electromagnetic drive component (32); when the second transmission component (31) is located at the sixth position, the first transmission unit (251) is located at the third position.

8. The automatic transfer switch according to any one of claims 1 to 5, characterized in that: The first transmission assembly (25) further comprises a rotatably arranged second transmission unit (252) and a connecting rod (255) connecting the first transmission unit (251) and the second transmission unit (252); the second transmission unit (252) is transmission-connected to the second transmission assembly (31); 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 second transmission unit (252) includes a rotatably arranged main body (2521) and an operating portion (2522) arranged on the main body (2521), wherein the operating portion (2522) extends outside the housing (10); the driving mechanism (30) further includes a synchronization rod (33), wherein the synchronization rod (33) connects the main body (2521) and the swing arm (311); Driven by the second transmission assembly (31), the second transmission unit (252) can also have a ninth position between the seventh position and the eighth position; when the second transmission unit (252) is at the ninth position, the first transmission unit (251) is at the third position, and the second transmission assembly (31) is at the sixth position.

10. The automatic transfer switch according to any one of claims 1 to 5, characterized in that: The electromagnetic drive assembly (32) comprises a first electromagnetic drive unit (321), the first electromagnetic drive unit (321) comprising a first pull-in coil (3211) installed in the housing (10), a first moving iron core (3212) being provided in the first pull-in coil (3211), a first connecting rod (3213) being hingedly provided on the first moving iron core (3212), and the first connecting rod (3213) being hingedly connected to the first connecting portion (313); The device further comprises a second electromagnetic drive unit (322), the second electromagnetic drive unit (322) comprising a second pull-in coil (3221) installed in the housing (10), a second moving iron core (3222) being provided in the second pull-in coil (3221), a second connecting rod (3223) being hingedly provided on the second moving iron core (3222), and the second connecting rod (3223) being hingedly connected to the second connecting portion (314); The invention also includes a third electromagnetic drive unit (323), wherein the third electromagnetic drive unit (323) includes a third attraction coil (3231) installed in the housing (10), the third attraction coil (3231) is provided with a third moving iron core (3232), a third connecting rod (3233) is hingedly provided on the third moving iron core (3232), and the third connecting rod (3233) is hingedly connected to the third connecting portion (315).

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