Contact structure and change-over switch

Abstract

The utility model provides a contact structure and a change-over switch, and relates to the technical field of switches, the contact structure comprises a first static contact, a second static contact, a moving contact assembly, a leading-out end and a driving assembly, the driving assembly comprises a driving rod and a driven rod rotationally connected with the driving rod, and one end, deviating from the driving rod, of the driven rod is connected with the moving contact assembly; the driving rod is driven to rotate and drives the driven rod to rotate, and the driven rod drives the moving contact assembly to rotate synchronously, so that switching cooperation between contact between the moving contact assembly and the first static contact and the leading-out end or contact between the moving contact assembly and the second static contact and the leading-out end is achieved. According to the design, the transmission path is optimized, the assembly process is simplified, the occupied space is reduced, and meanwhile, the overall stability of the change-over switch is improved.

Description

Technical Field

[0001] The present application relates to the field of switch technology, and in particular to a contact structure and a conversion switch. Background Art

[0002] With the development of society, people's requirements for power grids and their transmission and distribution process are gradually increasing, mainly in terms of the safety, reliability, continuity, and easy maintenance of power supply equipment. Therefore, transfer switches with the above typical characteristics have been widely used in electrical systems in important places such as residential, commercial and industrial buildings. Transfer switches are mainly used in working occasions where two circuits are automatically switched. When one circuit of the power supply has problems or failures, it automatically switches the transmission and distribution line to another circuit for power supply, thereby realizing automatic switching of the two circuits and ensuring the continuity and stability of power consumption of key loads.

[0003] As the actuator of the transfer switch, the contact structure plays an important role in connecting and disconnecting the circuit and is one of the most important components of the transfer switch. The contact structure usually includes a static contact, a moving contact, a drive mechanism, a transmission mechanism, etc. Among them, the transmission mechanism usually adopts gear or chain transmission, which occupies a large space and has a cumbersome assembly process. In addition, the gear or chain may become loose during the transmission process, causing the transfer switch to fail. Utility Model Content

[0004] The purpose of the present application is to provide a contact structure and a transfer switch to address the deficiencies in the above-mentioned prior art.

[0005] To achieve the above purpose, the technical solution adopted in the embodiment of the present application is as follows:

[0006] According to one aspect of an embodiment of the present application, a contact structure is provided, including a first static contact, a second static contact, a moving contact assembly, a lead-out terminal and a driving assembly, wherein the driving assembly includes a driving rod and a driven rod rotatably connected to the driving rod, wherein one end of the driven rod facing away from the driving rod is connected to the moving contact assembly, and the driving rod drives the moving contact assembly to rotate via the driven rod, so that the moving contact assembly switches between contacting with the first static contact and the lead-out terminal, or contacting with the second static contact and the lead-out terminal.

[0007] Optionally, the driving assembly has a first position in which the moving contact assembly contacts the first stationary contact and the lead-out end, and a second position in which the moving contact assembly contacts the second stationary contact and the lead-out end. The driven rod has a slide groove extending along its axial direction, and the driving rod is slidably disposed in the slide groove to limit the movement range of the driving assembly between the first position and the second position.

[0008] Optionally, when the driving assembly is in the first position or the second position, the angle between the axis of the driving rod and the axis of the driven rod is less than 90°.

[0009] Optionally, a line connecting the rotation center of one end of the driven rod away from the driving rod and the rotation center of the moving contact assembly coincides with the rotation axis of the moving contact assembly.

[0010] Optionally, one end of the driven rod facing away from the driving rod is hinged to the moving contact assembly, so that the driving rod, the driven rod, and the line connecting the hinge point between the driven rod and the moving contact assembly and the rotation center of the moving contact assembly together form a four-bar structure.

[0011] Optionally, the driving assembly further comprises a driver, and the driver drives the moving contact assembly to rotate via a driving rod and a driven rod.

[0012] Optionally, the drive is a rotary drive or a linear drive.

[0013] Optionally, the lead-out terminal, the moving contact assembly, the first static contact and the second static contact are arranged in sequence along the first direction, the moving contact assembly, the driving rod and the driven rod are arranged along the second direction, the moving contact assembly and the driver are arranged along the third direction, and the first direction, the second direction and the third direction are perpendicular to each other.

[0014] Optionally, the driving assembly is located on one side of the rotation plane of the moving contact assembly, and a partition is provided between the driving assembly and the moving contact assembly.

[0015] Optionally, the moving contact assembly includes a moving contact and a contact bracket for supporting the moving contact, the contact bracket is fixedly connected to the moving contact, and the driving assembly is directly connected to the contact bracket.

[0016] According to another aspect of an embodiment of the present application, a switching switch is provided, comprising a housing and any one of the above-mentioned contact structures, wherein the contact structure is disposed in the housing.

[0017] The beneficial effects of this application include:

[0018] The present application provides a contact structure, including a first static contact, a second static contact, a moving contact assembly, a lead-out terminal and a driving assembly, wherein the driving assembly includes a driving rod and a driven rod rotatably connected to the driving rod, wherein one end of the driven rod facing away from the driving rod is connected to the moving contact assembly, and the driving rod drives the moving contact assembly to rotate via the driven rod, so that the moving contact assembly switches between contacting with the first static contact and the lead-out terminal, or contacting with the second static contact and the lead-out terminal. The present application arranges the first static contact and the second static contact on one side of the moving contact assembly, arranges the lead-out terminal on the other side, and optimizes the design of the driving assembly, so that the moving contact assembly can switch between contacting with the first static contact and the lead-out terminal, or contacting with the second static contact and the lead-out terminal more smoothly, thereby ensuring automatic switching of the circuit and improving the continuity and stability of power consumption of key loads. The driving assembly includes a driving rod and a driven rod rotatably connected to the driving rod, and one end of the driven rod away from the driving rod is connected to the moving contact assembly, so that the driving rod rotates after being driven, and drives the driven rod to rotate, and the driven rod drives the moving contact assembly to rotate synchronously, thereby realizing the switching coordination between the moving contact assembly contacting with the first stationary contact and the lead-out terminal, or contacting with the second stationary contact and the lead-out terminal. This design optimizes the transmission path, simplifies the assembly process, reduces the occupied space, and improves the overall stability of the transfer switch. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 One of the structural schematic diagrams of a contact structure provided in an embodiment of the present application;

[0021] Figure 2 A second structural schematic diagram of a contact structure provided in an embodiment of the present application;

[0022] Figure 3 A third structural schematic diagram of a contact structure provided in an embodiment of the present application;

[0023] Figure 4 A fourth structural schematic diagram of a contact structure provided in an embodiment of the present application;

[0024] Figure 5 A fifth structural diagram of a contact structure provided in an embodiment of the present application;

[0025] Figure 6 A sixth structural diagram of a contact structure provided in an embodiment of the present application;

[0026] Figure 7 A seventh structural diagram of a contact structure provided in an embodiment of the present application;

[0027] Figure 8 One of the structural schematic diagrams of another contact structure provided in an embodiment of the present application;

[0028] Fig. 9 The second structural schematic diagram of another contact structure provided in an embodiment of the present application.

[0029] Icon: 10a-first static contact; 10b-second static contact; 10c-lead end; 20-moving contact assembly; 21-moving contact; 22-contact bracket; 30-driving assembly; 31-driving rod; 32-driven rod; 321-slide groove; 33-driver; 40-partition; a-angle; x-first direction; y-second direction; z-third direction. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0031] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for protection, but merely represents selected embodiments of the present application. It should be noted that, in the absence of conflict, the various features in the embodiments of the present application can be combined with each other, and the combined embodiments are still within the scope of protection of the present application.

[0032] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0033] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the application is usually placed when in use. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0034] In addition, the terms "horizontal", "vertical" and the like do not mean that the components are required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0035] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0036] In this digital age, people are becoming more and more dependent on electricity. Whether it is home, industry or business, a stable and reliable power supply is essential. Among them, the transfer switch can automatically switch to another circuit when one circuit fails, thereby realizing automatic circuit switching and ensuring the normal operation of the equipment. Therefore, it is often used in important power distribution occasions.

[0037] Among them, the contact structure, as the actuator of the transfer switch, undertakes the key task of connecting and disconnecting the circuit, and therefore plays an important role in the design of the transfer switch. Its composition usually includes a static contact, a moving contact 21, a drive mechanism and a transmission mechanism. These components work together to ensure the normal operation of the transfer switch. The transmission mechanism usually adopts a gear or chain drive. However, there are some problems with traditional gear or chain drives, such as large space occupation, cumbersome assembly process, etc., and looseness may occur during long-term use, thereby causing the failure of the transfer switch.

[0038] Therefore, the embodiment of the present application provides a contact structure, which can be used in a conversion switch. Specifically, the contact structure includes a first static contact 10a, a second static contact 10b and a moving contact assembly 20. The first static contact 10a and the second static contact 10b are usually fixedly installed in the housing of the conversion switch, and the moving contact assembly 20 is movably installed in the housing of the conversion switch. The moving contact assembly 20 is driven to switch and cooperate with the first static contact 10a and the second static contact 10b to achieve automatic switching between two circuits. Of course, the present application does not limit the movable installation method of the moving contact assembly 20. For example, it can be rotatably installed in the housing of the conversion switch, or it can be slidably installed in the housing of the conversion switch. For ease of understanding, the following schematic description is taken as an example of the rotation of the moving contact assembly 20.

[0039] Specifically, Figures 1 to 7 As shown, a moving contact assembly 20, a first static contact 10a connected to the first circuit, a second static contact 10b connected to the second circuit, and a lead-out terminal 10c connected to the load end are arranged in the conversion switch, wherein the lead-out terminal 10c and the first static contact 10a and the second static contact 10b are arranged on opposite sides of the moving contact assembly 20 along the first direction x, and the first static contact 10a and the second static contact 10b are arranged on opposite sides of the moving contact assembly 20 along the third direction z. When the first circuit needs to work, the moving contact assembly 20 is driven by the driving assembly 30 to rotate until both ends are respectively in contact with the first static contact 10a and the lead-out terminal 10c for closing, so that the circuit is connected; when the second circuit needs to work, the moving contact assembly 20 is driven by the driving assembly 30 to rotate until both ends are respectively in contact with the second static contact 10b and the lead-out terminal 10c for closing, thereby, the automatic switching between the two circuits can be guaranteed by the switching cooperation between the moving contact assembly 20 and the two static contacts.

[0040] like Figures 1 to 3As shown, by optimizing the design of the drive assembly 30, the switching of the moving contact assembly 20 between the first static contact 10a and the second static contact 10b can be made smoother, ensuring the automatic switching of the two circuits, thereby improving the continuity and stability of the power consumption of the key load. Among them, the drive assembly 30 includes a drive rod 31 and a driven rod 32 rotatably connected to the drive rod 31, and the end of the driven rod 32 away from the drive rod 31 is fixedly connected to the moving contact assembly 20, so that the drive rod 31 rotates after being driven, and drives the driven rod 32 to rotate, and the driven rod 32 drives the moving contact assembly 20 to rotate synchronously, so as to realize the switching coordination between the moving contact assembly 20 contacting with the first static contact 10a and the lead-out terminal 10c, or contacting with the second static contact 10b and the lead-out terminal 10c. This design optimizes the transmission path, simplifies the assembly process, reduces the occupied space, and at the same time improves the overall stability of the transfer switch, and effectively avoids the loosening problem that may occur in the traditional gear or chain transmission, making the entire transfer switch more compact and efficient.

[0041] Alternatively, if Figure 1 As shown, the moving contact assembly 20 includes a moving contact 21 and a contact bracket 22 for supporting the moving contact 21, so that the moving contact 21 can remain stable during rotation. A through hole is provided in the contact bracket 22 for the moving contact 21 to pass through, and both ends of the moving contact 21 extend out of the contact bracket 22, and the moving contact 21 is fixedly supported in the contact bracket 22. The driven rod 32 of the driving assembly 30 is directly connected to the contact bracket 22 to drive the contact bracket 22 to rotate, and the contact bracket 22 drives the moving contact 21 to rotate. Through such a design, the moving contact 21 can be firmly fixed in the contact bracket 22, and the movement of the driving assembly 30 directly affects the rotation of the contact bracket 22, thereby affecting the movement of the moving contact 21, so as to realize the switching coordination between the moving contact 21 contacting with the first stationary contact 10a and the lead-out terminal 10c, or contacting with the second stationary contact 10b and the lead-out terminal 10c.

[0042] Alternatively, if Figure 4 and Figure 5 As shown, the driving assembly 30 also includes a driver 33, which drives the moving contact assembly 20 to rotate via the driving rod 31 and the driven rod 32. The driver 33 is used to provide sufficient power to drive the driving rod 31 and the driven rod 32 to rotate. Through the power output of the driver 33, the driving rod 31 is rotated, and the driving of the moving contact assembly 20 is achieved through the connection with the driven rod 32. The driver 33 also ensures that the driving rod 31 and the driven rod 32 can rotate at a stable speed and force, thereby ensuring the normal operation of the contact structure.

[0043] Optionally, the driver 33 is a rotary driver or a direct-acting driver. A rotary driver provides power through rotational motion, such as an electric motor or a stepper motor, and usually transmits the driving force to the driving rod 31 through a rotating shaft, thereby realizing the rotation of the moving contact assembly 20. A direct-acting driver provides power through linear motion, such as a hydraulic cylinder, an electric push rod or an electromagnetic driver, and usually drives the driving rod 31 through linear push and pull, thereby driving the rotation of the moving contact assembly 20. In actual application, a suitable driver 33 should be selected according to the specific application scenario and requirements to ensure the normal operation and reliability of the contact structure in different application scenarios.

[0044] Alternatively, if Figure 3 As shown, the driven rod 32 has a slide groove 321 extending along its axial direction, and the driving rod 31 is slidably arranged in the slide groove 321. Specifically, one end of the driving rod 31 is fixedly connected to the output end of the driver 33, and the other end of the driving rod 31 is slidably arranged in the slide groove 321 of the driven rod 32. When the output end of the driver 33 drives the driving rod 31 to rotate along a fixed axis, the driving rod 31 will stably slide along the slide groove 321 and drive the driven rod 32 to rotate. The other end of the driven rod 32 is fixedly connected to the moving contact assembly 20, so that the moving contact assembly 20 rotates synchronously under the drive of the driven rod 32. Among them, the driven rod 32 rotates around one end connected to the moving contact assembly 20, and its rotation center is the fixed connection point between the driven rod 32 and the moving contact assembly 20. This connection relationship constitutes a typical three-link structure, optimizes the transmission path, reduces power loss and wear of moving parts, and can efficiently and stably transmit force and motion to the moving contact assembly 20.

[0045] Alternatively, if Figure 3 As shown, the line connecting the rotation center of the end of the driven rod 32 away from the driving rod 31 and the rotation center of the moving contact assembly 20 coincides with the rotation axis of the moving contact assembly 20. In other words, the line connecting the fixed connection point between the driven rod 32 and the moving contact assembly 20 and the rotation center of the moving contact assembly 20 completely coincides with the rotation axis of the moving contact assembly 20, that is, the driven rod 32 and the moving contact assembly 20 rotate coaxially, realizing efficient transmission of the moving contact assembly 20 by the driven rod 32, reducing the occupied space during rotation, and making the layout of the entire transfer switch more compact.

[0046] Optionally, the drive assembly 30 has a first position where the moving contact assembly 20 contacts the first static contact 10a and the lead-out terminal 10c, and a second position where the moving contact assembly 20 contacts the second static contact 10b and the lead-out terminal 10c, that is, the drive assembly 30 can control the switching of the moving contact assembly 20 between the two static contacts. The design of the slide groove 321 limits the movement range of the drive rod 31, so that the drive rod 31 can only slide in the slide groove 321, and the sliding range of the drive rod 31 limits the movement range of the drive assembly 30 between the first position and the second position, that is, when the drive assembly 30 is in the first position, it can only move to the second position, and when the drive assembly 30 is in the second position, it can only move to the first position. When the driving assembly 30 is in the first position or the second position, the driving rod 31 is located at one end of the slide slot 321 close to the driving rod 31. At this time, due to the design of the slide slot 321, the driving rod 31 can no longer continue to rotate along the rotation direction, so that the moving contact assembly 20 also stops rotating, ensuring the stability and reliability of the contact closing state between the moving contact assembly 20 and the corresponding static contact. Of course, in other embodiments, a limiter can also be set on the housing or at the position of the partition corresponding to the driving rod 31 to limit the movement range of the driving rod 31, thereby ensuring that the movement range of the driving assembly 30 is limited between the first position and the second position.

[0047] Preferably, if Figure 3 As shown, when the drive assembly 30 is in the first position or the second position, the angle a between the axis of the drive rod 31 and the axis of the driven rod 32 is less than 90°. For example, the angle a between the axis of the drive rod 31 and the axis of the driven rod 32 can be 75°, 60°, 45°, etc. When the drive assembly 30 moves from the first position to the second position, the drive rod 31 rotates clockwise around the output end of the driver 33, driving the driven rod 32 to rotate counterclockwise around its fixed connection point with the moving contact assembly 20. At the same time, due to the limitation of the slide groove 321, the drive rod 31 slides to the end of the slide groove 321 close to the drive rod 31, so that the drive rod 31 and the driven rod 32 cannot continue to rotate, thereby ensuring that the moving contact assembly 20 can reliably stop rotating after reaching the closing position with the second static contact 10b. At this time, when the moving contact assembly 20 has a tendency to move from the second stationary contact 10b to the first stationary contact 10a, that is, it has a tendency to drive the driven rod 32 to rotate clockwise, the driven rod 32 also has a tendency to drive the driving rod 31 to rotate clockwise. However, due to the limitation of the slide slot 321, the driving rod 31 cannot rotate clockwise.

[0048] Similarly, when the drive assembly 30 moves from the second position to the first position, the drive rod 31 rotates counterclockwise around the output end of the driver 33, driving the driven rod 32 to rotate clockwise around its fixed connection point with the moving contact assembly 20. At the same time, due to the limitation of the slide slot 321, the drive rod 31 slides to the end of the slide slot 321 close to the drive rod 31, so that the drive rod 31 and the driven rod 32 cannot continue to rotate, thereby ensuring that the moving contact assembly 20 can reliably stop rotating after reaching the closing position with the first static contact 10a. At this time, when the moving contact assembly 20 has a tendency to move from the first static contact 10a to the second static contact 10b, that is, it has a tendency to drive the driven rod 32 to rotate counterclockwise, the driven rod 32 will also have a tendency to drive the drive rod 31 to rotate counterclockwise. However, due to the limitation of the slide slot 321, the drive rod 31 cannot rotate counterclockwise. It should be noted that the clockwise and counterclockwise described in the embodiments of the present application are based on Figure 1 Proposed for reference.

[0049] Therefore, when the moving contact assembly 20 moves to any closing position, the self-locking of the driving assembly 30 is achieved through the design of the slide slot 321 and the angle a between the axis of the driving rod 31 and the axis of the driven rod 32. This means that the moving contact assembly 20 can be reliably and accurately locked in the closing position, and the driven rod 32 can only be driven to rotate by the driving rod 31, but not by the driven rod 32. Such a design ensures the safety of the transfer switch, prevents misoperation or accidental rotation, and ensures the reliable operation of the equipment.

[0050] Alternatively, if Figure 1 and Figure 2 As shown, the lead-out terminal 10c, the moving contact assembly 20, the first static contact 10a and the second static contact 10b are arranged in sequence along the first direction x, so that the switching process between the moving contact assembly 20 contacting with the first static contact 10a and the lead-out terminal 10c, or contacting with the second static contact 10b and the lead-out terminal 10c is smoother, ensuring the reliability and stability of the circuit, and providing a basis for the normal operation of the conversion switch. The driving rod 31 and the driven rod 32 of the driving assembly 30 are arranged along the second direction y with the moving contact assembly 20, and the driver 33 of the driving assembly 30 is arranged along the third direction z with the moving contact assembly 20, and the first direction x, the second direction y and the third direction z are perpendicular to each other. On the one hand, such an arrangement method allows the dimensions of the conversion switch to match in different dimensions, so that the overall spatial arrangement is more neat and reasonable, and the length of the conversion switch in the second direction y is shortened to the greatest extent. On the other hand, it provides more convenient conditions for the connection and driving between the driving assembly 30 and the moving contact assembly 20, helps to simplify the transmission process between the driving assembly 30 and the moving contact assembly 20, and improves the response speed and operating efficiency of the switching switch.

[0051] Alternatively, if Figure 6 and Figure 7 As shown, the driving rod 31 and the driven rod 32 of the driving assembly 30 are located on one side of the rotation plane of the moving contact assembly 20. This layout optimizes the space utilization, provides more space for the arrangement of other components, and improves the flexibility and practicality of the overall design. A partition 40 is arranged between the driving assembly 30 and the moving contact assembly 20. By setting the partition 40, the driving assembly 30 and the contact assembly are effectively isolated in space, preventing interference and collision between them, thereby improving the stability and reliability of the system. At the same time, this separated installation also makes the layout of each component clearer and more orderly, which is convenient for maintenance and repair. In addition, the partition 40 is also used to install the contact assembly and the driving assembly 30 to provide a stable support base.

[0052] Optionally, the contact structure can be a clamping contact structure. In this case, it is necessary to form clamping grooves for clamping the static contact at both ends of the moving contact 21, and the thickness of the clamping groove matches the thickness of the static contact, so that the two sides of the static contact are respectively in contact with the two inner wall surfaces of the clamping groove to ensure that the circuit can be effectively connected. Specifically, when the drive component 30 is in the first position, the first static contact 10a and the lead end 10c are respectively clamped in the clamping grooves at both ends of the moving contact 21. When the drive component 30 is in the second position, the second static contact 10b and the lead end 10c are respectively clamped in the clamping grooves at both ends of the moving contact 21. Of course, in other embodiments, clamping grooves for clamping the moving contact 21 can also be formed on the first static contact 10a, the second static contact 10b and the lead end 10c to ensure the effective connection of the circuit.

[0053] The present application embodiment also provides another contact structure, such as Figure 8 and Fig. 9As shown, it includes a first stationary contact 10a, a second stationary contact 10b, a moving contact assembly 20, a lead-out terminal 10c and a driving assembly 30. At this time, the end of the driven rod 32 away from the driving rod 31 is hinged to the moving contact assembly 20, and the driving rod 31, the driven rod 32 and the line connecting the eccentric hinge point between the driven rod 32 and the moving contact assembly 20 and the rotation center of the moving contact assembly 20 together constitute a four-bar structure. When the driving rod 31 is driven by the fixed shaft to rotate, it drives the driven rod 32 to rotate, and the rotation of the driven rod 32 drives the moving contact assembly 20 to rotate as well, so that the moving contact assembly 20 switches between contacting with the first stationary contact 10a and the lead-out terminal 10c, or contacting with the second stationary contact 10b and the lead-out terminal 10c. Through the application of the four-bar structure, the driving mode of the moving contact assembly 20 is optimized, the transmission path is simplified, the wear between the moving parts is reduced, and the overall reliability of the device is improved. The design of the four-link structure makes power transmission more stable, ensuring that there is no jamming when the moving contact assembly 20 contacts the first stationary contact 10a and the lead-out terminal 10c, or contacts the second stationary contact 10b and the lead-out terminal 10c, thereby ensuring automatic switching of the circuit.

[0054] The embodiment of the present application also provides a transfer switch, including a housing and any of the above-mentioned contact structures, wherein the contact structure is arranged inside the housing, ensuring that the structure of the entire transfer switch is compact, safe and reliable. The design of the housing provides an external environment for protecting the contact structure, preventing the contact from being interfered with or damaged by the outside. Since the transfer switch adopts the above-mentioned contact structure, it also has the same beneficial effects as the contact structure, which will not be described in detail here.

[0055] The embodiment of the present application also provides a power distribution device, which is equipped with the aforementioned transfer switch, and the power distribution device can be equipped with at least one of the following: a distribution box, a cable, a distribution cabinet, a motor, a switch socket, a lamp, an air conditioner, an electric water heater, an electric meter, a camera, a telephone, a computer, etc. Such power distribution equipment can use the relevant structure of the transfer switch of the present application to realize intelligent management, but is not limited to the above intelligently managed power distribution equipment, and can also be used in non-intelligent power distribution equipment in traditional industries.

[0056] An embodiment of the present application also provides a power distribution device, in which the aforementioned conversion switch is applied to the power distribution device. The power distribution device can be used in smart scenarios, intelligent usage scenarios and the Internet of Things industry to achieve intelligent scenario management.

[0057] Optionally, the embodiments of the present application can be used for: fire-fighting electricity: fire control room, fire pumps, smoke exhaust facilities, fire elevators and their drainage pumps, fire emergency lighting, etc. at level one; corridor lighting, duty lighting, guard lighting, obstacle sign lights; rail transit; security system power supply; electronic information room power supply; passenger elevator power; sewage pump; variable frequency speed regulation constant pressure water supply and domestic pump (otherwise a secondary load); main offices, conference rooms, general duty room, archives room.

[0058] The embodiment of the present application also provides an energy storage system, in which the aforementioned conversion switch is applied to the energy storage system. The energy storage system generally includes components such as a battery pack, an inverter, and a charge and discharge controller. As a key component of the control circuit, the conversion switch can realize precise control of the connection between these components and the opening and closing of the circuit. Applying the conversion switch to the energy storage system can realize efficient management and control of energy, providing key support for the stable operation and performance optimization of the energy storage system.

[0059] Optionally, the transfer switch can be used to connect or disconnect the circuit between the battery pack and the inverter to achieve control of the charging or discharging process. Through the appropriate contact assembly design and the drive assembly 30, the transfer switch can connect the battery pack to the inverter when needed, thereby converting the stored energy into electricity to supply to the external system, or switch to the second circuit when not needed and not use the battery pack to achieve control of the battery pack.

[0060] Optionally, the conversion switch can realize the regulation and optimization of the internal circuit of the energy storage system. By properly designing the contact assembly and the drive assembly 30, the conversion switch can realize the switching and connection between multiple circuits in the energy storage system, realize the distribution and regulation of electric energy, thereby improving the energy utilization and operation efficiency of the system.

[0061] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A contact structure, characterized in that: The invention comprises a first stationary contact (10a), a second stationary contact (10b), a moving contact assembly (20), a lead-out terminal (10c) and a driving assembly (30); the driving assembly (30) comprises a driving rod (31) and a driven rod (32) rotatably connected to the driving rod (31); an end of the driven rod (32) facing away from the driving rod (31) is connected to the moving contact assembly (20); the driving rod (31) drives the moving contact assembly (20) to rotate via the driven rod (32), so that the moving contact assembly (20) switches between contacting with the first stationary contact (10a) and the lead-out terminal (10c), or contacting with the second stationary contact (10b) and the lead-out terminal (10c).

2. The contact structure according to claim 1, characterized in that: The driving assembly (30) has a first position in which the moving contact assembly (20) contacts the first stationary contact (10a) and the lead-out end (10c), and a second position in which the moving contact assembly (20) contacts the second stationary contact (10b) and the lead-out end (10c); the driven rod (32) has a slide groove (321) extending along its axial direction; the driving rod (31) is slidably disposed in the slide groove (321) to limit the movement range of the driving assembly (30) between the first position and the second position.

3. The contact structure according to claim 2, characterized in that: When the driving assembly (30) is in the first position or the second position, the angle (a) between the axis of the driving rod (31) and the axis of the driven rod (32) is less than 90°.

4. The contact structure according to any one of claims 1 to 3, characterized in that: A line connecting the rotation center of the end of the driven rod (32) away from the driving rod (31) and the rotation center of the moving contact assembly (20) coincides with the rotation axis of the moving contact assembly (20).

5. The contact structure according to claim 1, characterized in that: One end of the driven rod (32) facing away from the driving rod (31) is hinged to the moving contact assembly (20), so that the driving rod (31), the driven rod (32), and the line connecting the hinge point of the driven rod (32) and the moving contact assembly (20) and the rotation center of the moving contact assembly (20) together form a four-bar structure.

6. The contact structure according to any one of claims 1 to 3 and 5, characterized in that: The driving assembly (30) further comprises a driver (33), and the driver (33) drives the moving contact assembly (20) to rotate via the driving rod (31) and the driven rod (32).

7. The contact structure according to claim 6, characterized in that: The lead-out terminal (10c), the moving contact assembly (20), the first stationary contact (10a), and the second stationary contact (10b) are arranged in sequence along a first direction (x); the moving contact assembly (20), the driving rod (31), and the driven rod (32) are arranged along a second direction (y); the moving contact assembly (20) and the driver (33) are arranged along a third direction (z); and the first direction (x), the second direction (y), and the third direction (z) are perpendicular to each other.

8. The contact structure according to any one of claims 1 to 3 and 5, characterized in that: The driving assembly (30) is located on one side of the rotation plane of the moving contact assembly (20), and a partition plate (40) is provided between the driving assembly (30) and the moving contact assembly (20).

9. The contact structure according to any one of claims 1 to 3 and 5, characterized in that: The moving contact assembly (20) comprises a moving contact (21) and a contact support (22) for supporting the moving contact (21); the contact support (22) is fixedly connected to the moving contact (21); and the drive assembly (30) is directly connected to the contact support (22).

10. A transfer switch, characterized in that: The invention comprises a housing and a contact structure according to any one of claims 1 to 9, wherein the contact structure is arranged in the housing.

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