switching device

Abstract

The utility model provides a switch device, including shell, electromagnetic operation system and at least one contact unit, electromagnetic operation system includes electromagnetic drive mechanism and linkage assembly, electromagnetic drive mechanism removes along first direction, and every contact unit includes two interval settings terminal, and is provided with contact mechanism between two terminal, and linkage assembly links between electromagnetic drive machine and contact mechanism, first direction with second direction vertical, and electromagnetic operation system sets up with contact unit along first direction, and linkage assembly sets up with contact mechanism along first direction, and electromagnetic drive mechanism and linkage assembly are side by side and set up along second direction, and by electromagnetic drive mechanism through linkage assembly drive moving contact assembly in at least one contact mechanism in first direction removes. The utility model avoids the moving track of electromagnetic drive mechanism and linkage assembly collinear in first direction, is favorable for reducing the height of switch device, avoids occupying too much space, is favorable for miniaturization design.

Description

Technical Field

[0001] This utility model relates to the field of low-voltage electrical appliances, specifically to a switching device. Background Technology

[0002] A switching device is a device for controlling the opening and closing of a circuit. The switching device includes an electromagnetic operating system and at least one contact unit, and the contact mechanism of the contact unit is driven by the electromagnetic operating system to open and close the circuit.

[0003] In some products, the electromagnetic operating system is usually arranged side by side or parallel with the contact unit. That is, the electromagnetic operating system is arranged in the same space as a contact unit, or it is arranged as a separate accessory module. Such a structure will inevitably increase the overall thickness or width of the switching device. When there are many contact units, it is not conducive to ensuring the synchronization of the operation of multiple contact units.

[0004] In another part of the products, the electromagnetic operating system and the contact unit are arranged in the vertical direction. The electromagnetic operating system drives the moving contact component in the contact unit through the linkage component. Since the movement trajectory of the linkage component and the electromagnetic operating system is collinear, this structure requires too much space in terms of height of the switching device, increasing the overall height of the switching device. Summary of the Invention

[0005] The purpose of this invention is to overcome at least one defect of the prior art and provide a switch device with a simple structure and high reliability.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] This invention provides a switching device, including a housing, an electromagnetic operating system, and at least one contact unit. The electromagnetic operating system includes an electromagnetic drive mechanism and a linkage component. The electromagnetic drive mechanism moves along a first direction. Each contact unit includes two terminals spaced apart along a second direction, and a contact mechanism is disposed between the two terminals. The linkage component is linked between the electromagnetic drive mechanism and the contact mechanism of at least one contact unit. The first direction is perpendicular to the second direction.

[0008] The electromagnetic operating system and the contact unit are arranged along a first direction, the linkage component and the contact mechanism are arranged along a first direction, and the electromagnetic drive mechanism and the linkage component are arranged side by side along a second direction. The electromagnetic drive mechanism drives at least one moving contact component in the contact mechanism to move in the first direction through the linkage component.

[0009] Preferably, the electromagnetic operating system includes two electromagnetic drive mechanisms, which are spaced apart in the second direction, and the linkage component is linked between the two electromagnetic drive mechanisms.

[0010] Preferably, the electromagnetic operating system further includes at least one elastic reset member. In the second direction, the elastic reset member is disposed between two electromagnetic drive mechanisms for cooperating with the linkage component to drive the electromagnetic drive mechanism to reset. In the third direction, two adjacent elastic reset members are arranged at intervals. The third direction is perpendicular to the first direction and the second direction, respectively.

[0011] Preferably, the contact unit further includes a unit housing, the contact mechanism is disposed inside the unit housing, and a first limiting groove is provided on the outside of the unit housing. The bottom of the first limiting groove is recessed in the direction of the unit housing to limit the assembly of the electromagnetic drive mechanism.

[0012] Preferably, the contact mechanism includes a moving contact assembly and a stationary contact group spaced apart from each other in a first direction. A linkage part is provided on the side of the moving contact assembly facing away from the stationary contact group. The linkage part extends from a linkage slot in the unit housing for driving cooperation with the linkage assembly. Two adjacent linkage parts are arranged at intervals in a third direction, and the third direction is perpendicular to the first direction and the second direction, respectively.

[0013] Preferably, the moving contact assembly includes a contact support, a moving contact bridge, and an elastic device. The linkage part is disposed on the side of the contact support opposite to the moving contact bridge. The contact support has an assembly cavity. The elastic device, the moving contact bridge, and the connector disposed on the moving contact bridge are disposed in the assembly cavity. The first end and the second end of the elastic device are respectively connected to the connector and the contact support.

[0014] Preferably, at least one limiting platform is provided inside the unit housing, the limiting platform is spaced apart from the stationary contact group, and the moving contact bridge moves between the limiting platform and the stationary contact.

[0015] Preferably, the stationary contact assembly includes two stationary contacts spaced apart in a second direction. Each stationary contact is positioned along a side of the unit housing. The first end of the stationary contact is provided with a stationary contact portion, which is spaced apart from a moving contact portion of the moving contact assembly in the first direction. The second end of the stationary contact is connected to an adjacent terminal block.

[0016] Preferably, the first end of the stationary contact is spaced apart from the moving contact assembly, the end of the first end is folded back and extended to form a stationary contact portion, the stationary contact portion is spaced apart from a moving contact portion of the moving contact assembly, a magnetizing element is provided in the gap between the stationary contact portion and the first end, and the second end of the stationary contact is connected to an adjacent terminal.

[0017] Preferably, each contact unit further includes a current detection device connected to the middle of the stationary contact, and the wiring terminals of the current detection device extend to the outside of the unit housing.

[0018] Preferably, the current detection device is further connected to a connecting circuit board, which is attached to the outer surface of the unit housing.

[0019] Preferably, the outer surface of the unit housing is provided with a mounting groove for mounting the connecting circuit board. One end of the mounting groove is connected to the terminal block, and the other end is connected to the first limiting groove for limiting the electromagnetic drive mechanism. The depth of the mounting groove is greater than or equal to the thickness of the connecting circuit board.

[0020] Preferably, at least two wiring slots are provided at both ends of the housing, and a wiring terminal is provided in each wiring slot. Each wiring terminal corresponds to a wire hole opened at both ends of the unit housing.

[0021] Preferably, an arc-extinguishing system is provided between the contact mechanism and the adjacent terminal block, and the electromagnetic drive mechanism and the adjacent arc-extinguishing system are arranged along a first direction.

[0022] Preferably, an operation key is provided on the outside of the housing, and a control system is also provided inside the housing. The operation key and the electromagnetic operating system are respectively connected to the control system. Pressing the operation key triggers the control system to drive the electromagnetic operating system to operate.

[0023] Preferably, it includes two or more contact units arranged side by side in a third direction, with the moving contact assemblies of two adjacent contact units linked together, and the third direction being perpendicular to the first direction and the second direction, respectively.

[0024] In this invention, the electromagnetic operating system and the contact unit are arranged along the first direction to avoid increasing the overall thickness or width of the switching device. The linkage component and the electromagnetic drive mechanism are arranged side by side in the second direction to avoid the movement trajectories of the electromagnetic drive mechanism and the linkage component being collinear in the first direction. This helps to reduce the height of the switching device, avoids occupying too much space, and facilitates the miniaturization design of the switching device.

[0025] In addition, the electromagnetic operating system includes two electromagnetic drive mechanisms, which together drive the contact mechanism, providing a stable driving force for the opening and closing of the contact mechanism and improving the stability of the electromagnetic operating system driving multiple contact mechanisms.

[0026] In addition, the elastic reset component is arranged side by side with the electromagnetic drive mechanism, which can reset the electromagnetic drive mechanism and the linkage components at the same time, making full use of the space inside the housing.

[0027] In addition, the first limiting groove of the unit housing can limit the assembly of the electromagnetic drive mechanism. The recess of the first limiting groove into the interior of the unit housing can make full use of the space inside the housing, which is beneficial to reduce the height of the switching device in the first direction.

[0028] In addition, the stationary contact is arranged along the gap between the arc-extinguishing chamber and the unit housing, making the internal structure of the contact unit more compact and reasonable.

[0029] In addition, a magnetizing part is provided in the gap between the stationary contact part and the first end in the stationary contact, which can increase the magnetic field at the stationary contact part and the moving contact part, which is beneficial for arc initiation. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the switching device of this utility model;

[0031] Figure 2 This is a schematic diagram of the switching device of this utility model after the outer casing has been removed;

[0032] Figure 3 This is a schematic diagram of the electromagnetic drive mechanism and linkage components in this utility model;

[0033] Figure 4 This is a schematic diagram of the electromagnetic operating system and contact unit in this utility model;

[0034] Figure 5 This is a schematic diagram of the structure of the disassembled electromagnetic operating system and contact unit in this utility model;

[0035] Figure 6 This is a schematic diagram of the internal structure of the contact unit in this utility model;

[0036] Figure 7 This is a front view of the internal structure of the contact unit in this utility model;

[0037] Figure 8 This is a cross-sectional view of the contact unit in this utility model;

[0038] Figure 9 This is a schematic diagram of the contact mechanism in this utility model;

[0039] Figure 10 This is a schematic diagram of the moving contact assembly in this utility model;

[0040] Figure 11 This is a schematic diagram of the elastic device in the first equilibrium position in this utility model;

[0041] Figure 12 This is a schematic diagram of the elastic device in the second equilibrium position in this utility model;

[0042] Figure 13This is a cross-sectional view of the contact support in this utility model;

[0043] Figure 14 This is a structural schematic diagram of the moving contact bridge, connecting parts, and spring device in this utility model;

[0044] Figure 15 This is a schematic diagram of the switching device in this utility model (containing only one electromagnetic drive mechanism);

[0045] Figure 16 yes Figure 15 A schematic diagram of the linkage component and the contact unit;

[0046] Figure label:

[0047] 1-Outer shell, 1u-Top cover, 1b-Base, b-Operating key, b1-Close key, b2-Open key, t-Terminal, 2-Contact unit, 2h-Unit housing, 20h-Linkage slot, 21h-Arc extinguishing channel, 22h-First limit slot, 23h-Limit platform, 2p-Mounting slot, 2g-Magnetic yoke mounting slot, 2e-Unit exhaust port, 2l-Second limit slot, 20-Contact mechanism, 21-Moving contact assembly, 200-Contact support, 200b-Linkage part, 20 10b - Connecting hole, 200c - Supporting part, 2001c - Top wall of supporting part, 2002c - Bottom wall of supporting part, 2003c - Front wall of supporting part, 2004c - Rear wall of supporting part, 200d - Longitudinal cavity, 200e - Transverse cavity, 2001e - Connecting area, 2002e - Stop wall, 201 - Moving contact bridge, 2011 - Moving contact part, 2012 - Moving contact point, 201 - Limiting part, 202 - Elastic device, 2021 - Spring, 2022 - First connecting plate 2023 - Second connecting plate, 2024 - Guide rod, o1 - Hinge point of the first connecting plate, o2 - Hinge point of the second connecting plate, 203 - Connector, 22 - Stationary contact assembly, 220 - Stationary contact, 2200 - Stationary contact plate, 22001 - First plate, 22002 - Second plate, 22003 - Connecting section, 22004 - Stationary contact part, 22005 - Connecting part, 2201 - Stationary contact point, 23 - Magnetizing component, 24 - Arc extinguishing chamber, 25 - Metal partition, 26 - Isolation 27-Arc-initiating plate, 28-Current detection device, 29-Connecting circuit board, 3-Electromagnetic operating system, 3m-Electromagnetic drive mechanism, 3A-Linkage assembly, 31-Moving iron core, 32-Coil assembly, 33-Stationary iron core, 3c-Transmission rod, 3b-Linkage component, 30b-Linkage component body, 300b-First linkage hole, 31b-Allowing groove, 32b-Linkage bridge arm, 320b-Second linkage hole, 33b-Third limiting groove, 3r-Linkage rod, 7-Elastic reset component. Detailed Implementation

[0048] The specific embodiments of the switching device of this utility model are further described below with reference to the accompanying drawings. The switching device of this utility model is not limited to the description of the following embodiments.

[0049] like Figure 1 , 2 As shown in Figures 6-9, the switching device includes a housing 1. One side of the housing 1 is provided with an operation key b as an operating end. Inside the housing 1, there is a control system (not shown), an electromagnetic operating system 3, and at least one contact unit 2. The operation key b and the electromagnetic operating system 3 are respectively connected to the control system. By pressing the operation key b, the control system is triggered, causing the electromagnetic operating system 3 to operate according to the control signal of the control system. Of course, without the operation key b, the electromagnetic operating system 3 can also be driven directly by the control signal output by the control system. The electromagnetic operating system 3 includes an electromagnetic drive mechanism 3m and a linkage component 3A. Each contact unit 2 includes at least a pair of terminals t and a contact mechanism 20 connected between the pair of terminals t. The contact mechanism 20 includes a moving contact assembly 21 and a stationary contact assembly 22 that cooperate with each other. Two adjacent moving contact assemblies 21 are linked together. The electromagnetic drive mechanism 3m is driven by at least one moving contact assembly 21 through the linkage component 3A.

[0050] Furthermore, such as Figure 6-9 As shown, each contact unit 2 also includes two arc extinguishing systems. Each arc extinguishing system is located between a terminal t and the contact mechanism 20. The arc extinguishing system works in conjunction with the contact mechanism 20 to extinguish the electric arc generated by the disconnection. An exhaust port for discharging exhaust gas is provided on the housing 1.

[0051] For ease of description, the first direction is taken as the 3m movement direction of the electromagnetic drive mechanism. Figure 2 In this context, with the Y-axis as the first direction, the moving contact assembly 21 and the stationary contact assembly 22 are spaced apart and opposite each other in the first direction. The two directions perpendicular to the first direction are the second and third directions, respectively. Figure 2 In the middle, with the X-axis as the second direction and the Z-axis as the third direction, a pair of terminals t are spaced apart in the second direction, and the contact mechanism 20 is located between the pair of terminals t. When multiple contact units 2 are provided in the housing 1, two adjacent contact units 2 are arranged side by side in the third direction.

[0052] The improvement of this application is that, Figure 1-3 As shown, the electromagnetic operating system 3 and the contact unit 2 are arranged along the first direction, the linkage component 3A and the contact mechanism 20 are arranged along the first direction, and the electromagnetic drive mechanism 3m and the linkage component 3A are arranged side by side along the second direction. The electromagnetic drive mechanism 3m drives at least one moving contact component 21 in the contact mechanism 20 to move in the first direction through the linkage component 3A.

[0053] Thus, the electromagnetic operating system 3 and the contact unit 2 are arranged along the first direction to avoid increasing the overall thickness or width of the switching device. The linkage component 3A and the electromagnetic drive mechanism 3m are arranged side by side in the second direction to avoid the movement trajectories of the electromagnetic drive mechanism 3m and the linkage component 3A being collinear in the first direction. This helps to reduce the height of the switching device, avoids occupying too much space, and facilitates the miniaturization design of the switching device.

[0054] Furthermore, such as Figure 2 , 3 As shown, the electromagnetic operating system 3 includes two electromagnetic drive mechanisms 3m. In the second direction, the two electromagnetic drive mechanisms 3m are spaced apart. The linkage component 3A is located between the two electromagnetic drive mechanisms 3m. The linkage component 3A connects the two electromagnetic drive mechanisms 3m and the moving contact assembly 21 together. The two electromagnetic drive mechanisms 3m jointly drive the contact mechanism 20 to open and close, which can provide a stable driving force. When there are multiple contact units 2, the stability of the electromagnetic operating system 3 driving multiple contact mechanisms 20 can be improved.

[0055] Furthermore, such as Figure 4 , 5 As shown, the electromagnetic operating system 3 also includes at least one elastic reset element 7. In the second direction, the elastic reset element 7 is disposed between the two electromagnetic drive mechanisms 3m. In the third direction, two adjacent elastic reset elements 7 are arranged at intervals. Preferably, an elastic reset element 7 is disposed between two adjacent contact units 2, and the two contact units 2 share one elastic reset element 7, which can simplify the structure and reduce costs.

[0056] Combination Figure 1-14 A first embodiment of a switching device is provided.

[0057] like Figure 1-5 As shown, the switching device includes a housing 1, with opposite ends of the housing 1 serving as terminals. Each terminal has at least one wiring slot, and each wiring slot has an operating hole and a wiring hole for easy wiring. The connecting line between the two terminals is parallel to a second direction. The side of the housing 1 located between the two terminals serves as the operating end, which is equipped with an operating key b. The pressing direction of the operating key b is parallel to the first direction. Figure 1 In this configuration, the operating end protrudes from the center of the outer casing 1, giving the outer casing 1 an overall U-shape. Preferably, the outer casing 1 includes a top cover 1u and a base 1b that overlap each other. The top cover 1u overlaps the base 1b in a first direction. The operating end corresponds to the center position of the top cover 1u. The operating key b is a button, which can be divided into a closing key b1 and a closing key b2. Figure 1 In this configuration, the closing key b1 and the opening key b2 are positioned alternately on the third-order upward side. Alternatively, the switching device can also omit the operation key b, and the electromagnetic operating system 3 can be remotely driven by the control system.

[0058] A control system, an electromagnetic operating system 3, and at least one contact unit 2 are disposed within the outer casing 1. The control system includes a control circuit board, and operation keys b and the electromagnetic operating system 3 are respectively connected to the control circuit board. Pressing operation key b can trigger a controller on the control circuit board to output a control signal, causing the electromagnetic operating system 3 to move in a first direction according to the control signal output by the controller. The electromagnetic operating system 3 and the contact unit 2 are arranged along the first direction. In this embodiment, as shown... Figure 2-5 As shown, there are multiple contact units 2, and two adjacent contact units 2 are arranged side by side in the third direction. The electromagnetic operating system 3 is linked to the contact mechanism 20 of at least one of the contact units 2. Correspondingly, the opening and closing direction of the contact mechanism 20 of each contact unit 2 is also along the first direction.

[0059] like Figure 2-8 As shown, the electromagnetic operating system 3 includes an electromagnetic drive mechanism 3m and a linkage component 3A. Each contact unit 2 includes a pair of terminals t spaced apart along a second direction. A contact mechanism 20 is connected between the pair of terminals t. The contact mechanism 20 includes a moving contact assembly 21 and a stationary contact group 22 spaced apart and opposite each other in a first direction. The electromagnetic drive mechanism 3m is linked to at least one moving contact assembly 21 of the contact unit 2 through the linkage component 3A. The moving contact assemblies 21 of two adjacent contact units 2 are linked together. That is, a transmission rod 3c is connected between two adjacent moving contacts. The electromagnetic operating system 3 can be driven by one of the moving contact assemblies 21 through the linkage component 3A. The remaining moving contact assemblies 21 move synchronously under the linkage action of the transmission rod 3c. Preferably, the linkage component 3A is linked to the transmission rod 3c, so that the electromagnetic operating system 3 drives all moving contact assemblies 21 synchronously, ensuring consistent operation.

[0060] Combination Figure 2-5 An electromagnetic operating system 3 is provided, comprising an electromagnetic drive mechanism 3m and a linkage component 3A. The operation key b, the linkage component 3A, and the moving contact component 21 are sequentially arranged along a first direction. The electromagnetic drive mechanism 3m moves along the first direction and is arranged side-by-side with the linkage component 3A in a second direction. The electromagnetic drive mechanism 3m is connected to at least one moving contact component 21 of a contact unit 2 via the linkage component 3A. In this embodiment, the electromagnetic drive mechanism 3m synchronously drives all moving contact components 21 to move along the first direction via the linkage component 3A. Figure 2 , 3In this configuration, the electromagnetic drive mechanism 3m is positioned between the contact mechanism 20 and a terminal t, thereby enabling the electromagnetic drive mechanism 3m to move in a straight line in the area above the arc extinguishing system. In other words, in the first direction, the movement trajectory of the electromagnetic drive mechanism 3m is not on the same straight line as the movement trajectory of the linkage component 3A, which helps to reduce its height.

[0061] Furthermore, such as Figure 4 , 5 As shown, the electromagnetic operating system 3 also includes an elastic reset member 7. The elastic reset member 7 cooperates with the linkage component 3A to reset the electromagnetic drive mechanism 3m and the linkage component 3A. Preferably, in the second direction, the elastic reset member 7 is disposed between the two electromagnetic drive mechanisms 3m, and in the third direction, the elastic reset member 7 is disposed on the unit housing 2h between the two contact units 2. Two adjacent contact units 2 share one elastic reset member 7, which helps to reduce costs.

[0062] In this embodiment, as Figure 2 As shown, the electromagnetic drive mechanism 3m includes a magnetic yoke, a coil assembly 32, and a moving component. The magnetic yoke is arranged around the outside of the coil assembly 32. The coil assembly 32 includes a coil frame and a coil wound around the outside of the coil frame. The moving component includes a moving iron core 31 and a stationary iron core 33. The stationary iron core 33 and the moving iron core 31 are respectively arranged at opposite ends of the coil frame. Each coil frame is arranged inside the outer shell 1 along a first direction. The moving iron core 31 is driven by the coil assembly 32 to move along the first direction according to the control signal. The two coil frames are spaced apart in a second direction. The two moving iron cores 31 are spaced apart in the second direction and are linked together by the linkage component 3A. Of course, the electromagnetic drive mechanism 3m can also adopt existing technology.

[0063] like Figure 3-5 As shown, the linkage assembly 3A includes a linkage rod 3r and a linkage member 3b. The two ends of each linkage rod 3r are connected to two moving iron cores 31 respectively. That is, the central axis of each linkage rod 3r is parallel to the second direction. The linkage member 3b is set in the middle of the linkage rod 3r and is linked to the contact mechanism 20 of at least one contact unit 2. When the number of contact units 2 is large or the length of the moving iron core 31 in the third direction is large, the number of linkage rods 3r is two or more. Two adjacent linkage rods 3r are arranged side by side in the third direction, which helps to ensure the stable linkage of the two electromagnetic drive mechanisms 3m. In the third direction, the preferred linkage member 3b is driven to connect with the contact mechanism 20 of one or two contact units 2 located in the middle position, which helps to ensure the synchronization of the opening and closing actions of all contact mechanisms 20.

[0064] like Figure 2-5As shown, the linkage 3b includes a block-shaped linkage body 30b. An opening slot, serving as a clearance groove 31b, is formed in the middle of one side of the linkage body 30b. The opening of the clearance groove 31b faces the contact mechanism 20 of the contact unit 2, which helps to reduce the space occupied by the linkage 3b in the first direction (height direction). A first linkage hole 300b is formed on the other side of the linkage body 30b for the linkage 3b to pass through. Figure 5 In the middle, the clearance groove 31b and the first linkage hole 300b are arranged along the center line of the linkage member 3b, so that the linkage member 3b has a symmetrical structure.

[0065] Of course, the linkage component 3A may also consist of only the linkage rod 3r, with both ends of the linkage rod 3r connected to two electromagnetic drive mechanisms 3m respectively, and the middle part of the linkage rod 3r connected to at least one moving contact assembly 21. Alternatively, the middle part of the linkage rod 3r may be connected to the transmission rod 3c connected between the two moving contact assemblies 21, which can also drive all contact mechanisms 20.

[0066] At least one second linkage hole 320b is provided at both ends of the linkage member 3b. The central axis of the second linkage hole 320b passes through both sides of the opening of the clearance groove 31b. That is, the central axis of the second linkage hole 320b is perpendicular to the central axis of the first linkage hole 300b. In this embodiment, the central axis of the first linkage hole 300b is parallel to the first direction, and the central axis of the second linkage hole 320b is parallel to the third direction. The linkage member 3b is linked to the contact mechanism 20 through the second linkage hole 320b. When multiple contact mechanisms 20 are linked, the transmission rod 3c linked between two adjacent contact mechanisms 20 can pass through the second linkage hole 320b, thereby enabling the linkage member 3b to drive the contact mechanism 20. Figure 2-5 In the figure, the two ends of the linkage 3b extend outward along the opening direction away from the clearance groove 31b, so that the two ends of the clearance groove 31b opening form linkage bridge arms 32b. Each second linkage hole 320b is correspondingly opened on the linkage bridge arm 32b. The linkage bridge arm 32b facing the contact unit 2 has a third limiting groove 33b. One end of the elastic reset member 7 elastically abuts against the third limiting groove 33b. In the figure, the elastic reset member 7 is a spring 2021 with one end set along the first direction. One end of the spring 2021 cooperates with the third limiting groove 33b, and the other end is limited to the contact unit 2.

[0067] As another structure of the electromagnetic operating system 3, the electromagnetic operating system 3 may also include only one electromagnetic drive mechanism 3m. The electromagnetic drive mechanism 3m and the linkage component 3A are still arranged side by side in the second direction. At this time, the linkage component 3A can adopt the above structure or be simplified to include only the linkage rod 3r. However, compared with the structure of two electromagnetic drive mechanisms 3m, the driving force on the contact mechanism 20 is smaller, which is suitable for switching devices with fewer contact units 2.

[0068] Combination Figure 5-14 A specific structure for contact unit 2 is provided.

[0069] The contact unit 2 includes a pair of terminals t, a contact mechanism 20, and two arc-extinguishing systems. The pair of terminals t are spaced apart in the second direction. The contact mechanism 20 is connected between the pair of terminals t to control the connection and disconnection of the main circuit of each contact unit 2. Each arc-extinguishing system is disposed between the contact mechanism 20 and a terminal t. Each arc-extinguishing system includes an arc-extinguishing chamber 24. The arc inlet of the arc-extinguishing chamber 24 is connected to the contact mechanism 20. One end of the arc-extinguishing chamber 24 away from the arc inlet is provided with an exhaust port for discharging exhaust gas. The terminals t and the arc-extinguishing chamber 24 can adopt existing technologies.

[0070] like Figure 6-10 As shown, the contact mechanism 20 includes a moving contact assembly 21 and a stationary contact group 22 spaced apart in a first direction. The stationary contact group 22 includes two stationary contacts 220. In a second direction, the two stationary contacts 220 are spaced apart between two terminals t. Each stationary contact 220 has a stationary contact portion 22004 at its first end. The middle part of the stationary contact 220 extends along the side adjacent to the arc-extinguishing chamber 24, so that the second end of the stationary contact 220 is connected to a terminal t. The moving contact assembly 21 includes a contact support 200 and a moving contact bridge 201 connected to the contact support 200. The side of the contact support 200 facing away from the moving contact bridge 201 has a protruding linkage portion 200b. Two adjacent linkage portions 200b are linked together by a transmission rod 3c. The two ends of the moving contact bridge 201 are respectively used as moving contact portions 2011. Each moving contact portion 2011 is in contact or separated from a corresponding stationary contact portion 22004 at the arc inlet of the arc-extinguishing chamber 24.

[0071] Preferred, such as Figure 8 , 11 As shown in Figure 14, the moving contact assembly 21 also includes two elastic devices 202. A connector 203 is provided in the middle of the moving contact bridge 201. The connector 203 is fixed to the moving contact bridge 201 by riveting or welding. The first end and the second end of each elastic device 202 are respectively linked to the contact support 200 and the connector 203, so that the two elastic devices 202 can switch between the first balanced position, the dead point position and the second balanced position. The dead point position is located between the first balanced position and the second balanced position. Preferably, the two elastic devices 202 are symmetrically arranged, thereby ensuring that the moving contact bridge 201 is uniformly stressed and avoiding deviation of the moving trajectory of the moving contact bridge 201.

[0072] Furthermore, the second ends of the two elastic devices 202 elastically compress each other. That is, in the first equilibrium position, the dead point position, and the second equilibrium position, the second ends of the two elastic devices 202 remain in contact. The elastic deformation of each elastic device 202 in the first equilibrium position and the second equilibrium position is less than the elastic deformation in the dead point position. Of course, the second ends of the two elastic devices 202 may not cooperate with each other. Each elastic device 202 undergoes elastic deformation under the interaction of the connector 203 and the contact support 200. At this time, it is difficult for the two elastic devices 202 to maintain a stable state in the dead point position. At this time, as the moving contact bridge 201 is repelled, the two elastic devices 202 switch over the dead point position and remain in the second equilibrium position.

[0073] like Figure 8 , 11 As shown, during normal opening and closing, the two elastic devices 202 remain in a first equilibrium position at an angle. Each elastic device 202 can apply pressure to the moving contact bridge 201. In the closed state, the pressure applied by each elastic device 202 can serve as the contact pressure between the moving contact 2011 and the stationary contact 22004. In the event of a short circuit fault, the electrodynamic force generated between the moving contact 2011 and the stationary contact 22004 repels the moving contact bridge 201. The moving contact bridge 201 moves in a first direction away from the stationary contact 220. The movement of the moving contact bridge 201 can cause the second ends of the two elastic devices 202 to move relative to the contact support 200, causing the two elastic devices 202 to switch and remain in a dead position or a second equilibrium position at an angle (see...). Figure 12 At this time, the two elastic devices 202 can restrict the moving contact bridge 201 from moving towards the stationary contact 220, so as to avoid contact with the stationary contact assembly 22 again due to the reduction of electrodynamic force, thereby causing welding between the contacts.

[0074] Preferred, such as Figure 10-13 As shown, one end of the contact support 200 serves as a linkage part 200b. At least one connecting hole 2010b is provided on the linkage part 200b, and a transmission rod 3c passes through each connecting hole 2010b to link two adjacent linkage parts 200b together. The other end of the contact support 200 has an assembly cavity, and a moving contact bridge 201 is disposed within the assembly cavity. Two moving contact parts 2011 extend out of the assembly cavity. The first end of each elastic device 202 is rotatably connected to the assembly cavity. The assembly cavity has a certain space in a direction perpendicular to the moving contact bridge 201. When the moving contact bridge 201 is repelled by electrodynamic force, the moving contact bridge 201 can move along a plane P perpendicular to the plane connecting the two ends of the moving contact bridge 201 (see...). Figure 14In this embodiment, the movable contact bridge 201 moves within the assembly cavity along a first direction. Furthermore, one end of the assembly cavity extends away from the movable contact bridge 201 to provide moving space for the connector 203. When the movable contact bridge 201 moves relative to the contact support 200, the connector 203 moves within the assembly cavity. The sidewall of the first end of each elastic device 202 is rotatably connected to the assembly cavity, so that the elastic device 202 and the connector 203 are within the internal space of the contact support 200, avoiding interference from external structures and ensuring the stability of the fit.

[0075] Combination Figure 6-14 A specific structure of a moving contact assembly 21 is provided. The moving contact assembly 21 includes a contact support 200, a connector 203, a moving contact bridge 201, and two elastic devices 202. The contact support 200 includes an integrally formed linkage part 200b and a support part 200c. One end of the linkage part 200b has two parallel connecting holes 2010b, and the other end of the linkage part 200b is connected to one end of the support part 200c. Preferably, the support part 200c is a T-shaped hollow body. After the linkage part 200b is connected to the support part 200c, the contact support 200 as a whole forms a cross shape. The top wall 2001c of the support part is divided into... The other two ends of the bearing part 200c are connected to the linkage part 200b. The end wall of the bearing part 200c away from the linkage part 200b serves as the bottom wall 2002c of the bearing part. Two pairs of side walls are connected between the bottom wall 2002c and the top wall 2001c of the bearing part. One pair of side walls are the front wall 2003c and the rear wall 2004c of the bearing part, and the other pair of side walls are the left wall and the right wall of the bearing part. The hollow area inside the bearing part 200c serves as the assembly cavity. The left wall and the right wall of the bearing part are open as the mounting port connecting the assembly cavity. The two ends of the moving contact bridge 201 extend from the mounting port to the outside of the contact support 200.

[0076] Figure 9-13 In the assembly cavity, the overall shape is T-shaped. The assembly cavity includes a transverse cavity 200e and a longitudinal cavity 200d that are interconnected. The central axis of the longitudinal cavity 200d is parallel to a first direction, and the central axis of the transverse cavity 200e is parallel to a second direction. The two ends of the transverse cavity 200e away from the longitudinal cavity 200d serve as connection areas 2001e. The connector 203 moves along the central axis of the longitudinal cavity 200d. The first end of each elastic device 202 is rotatably connected to the end of the transverse cavity 200e away from the longitudinal cavity 200d, that is, connected to the connection area 2001e. The inner sidewall of the transverse cavity 200e facing the moving contact bridge 201 serves as a stop wall 2002e. When the connector 203 contacts the stop wall 2002e, the stop wall 2002e prevents the connector 203 from continuing to move, so that the two elastic devices 202 switch to the second equilibrium state.

[0077] like Figure 6-12 As shown in Figure 14, the moving contact bridge 201 is generally straight. The middle part of the moving contact bridge 201 is disposed through the assembly cavity. The two ends of the moving contact bridge 201 respectively serve as moving contact parts 2011, extending out of the assembly cavity from the two mounting ports. In this embodiment, the plane P connecting the two ends of the moving contact bridge 201 can also be understood as the plane area connecting the two moving contact parts 2011. When the moving contact bridge 201 is disposed on the contact support 200, the plane P is perpendicular to the first direction. Each moving contact part 2011 has a moving contact point 2012 on the side facing the stationary contact 220, and the end of each moving contact part 2011 faces away from the stationary contact. The 220-degree bend forms a limiting part 201. When the moving contact assembly 21 is in the open position, the limiting part 201 can cooperate with the limiting platform 23h in the switch device to limit the movement range of the moving contact bridge 201. In addition, when the moving contact bridge 201 is pushed away, the limiting part 201 cooperates with the limiting platform 23h. When the drive contact support 200 moves to the open position, the contact of the limiting part 201 and the limiting platform 23h abuts, thereby limiting the second end of the connecting member 203 and the elastic device 202, so that the contact support 200 drives the first end of the elastic device 202 to move, thereby switching the elastic device 202 to the first balanced position.

[0078] The connector 203 is located in the middle of the moving contact bridge 201. Figure 14 The connecting member 203 has a U-shaped structure. The connecting member 203 includes two spaced-apart support walls. Two parallel shafts are arranged between the two support walls. The connecting line between the two shafts is parallel to the plane P connecting the two ends of the movable contact bridge 201. Each shaft is used to rotatably connect to the second end of an elastic device 202. The part connected between the two support walls can be riveted or welded to the movable contact bridge 201.

[0079] like Figure 8 , 11 As shown in Figures 12 and 14, each elastic device 202 includes a first connecting plate 2022, a second connecting plate 2023, a guide rod 2024, and a spring 2021. The first connecting plate 2022 and the second connecting plate 2023 are rotatably connected to the contact support 200 and the connector 203, respectively. The two second connecting plates 2023 abut against each other. One end of the guide rod 2024 is connected to the first connecting plate 2022, and the other end of the guide rod 2024 is slidably engaged with the second connecting plate 2023. The spring 2021 is sleeved on the outer wall of the guide rod 2024 and abuts against the first connecting plate 2022 and the second connecting plate 2023, respectively. The axial length of the spring 2021 in the normal state is greater than the axial length of the guide rod 2024, so that the spring 2021 is always in a compressed state between the first connecting plate 2022 and the second connecting plate 2023.

[0080] In this embodiment, as Figure 14As shown, the first connecting plate 2022 has a U-shaped structure and includes two spaced-apart first connecting arms. A first intermediate plate is connected between the two first connecting arms. The two first connecting arms are rotatably connected to the assembly cavity via a shaft, that is, connected to the end of the transverse cavity 200e away from the longitudinal cavity 200d. One end of the guide rod 2024 is connected to the first intermediate plate. The second connecting plate 2023 also has a U-shaped structure and includes two spaced-apart second connecting arms. The two second connecting arms are rotatably connected to a shaft of the connector 203, and a second intermediate plate is connected between the two second connecting arms. The other end of the guide rod 2024 slides through the middle of the second intermediate plate. The end of the guide rod 2024 is provided with an anti-detachment part to prevent the guide rod 2024 from falling off the second intermediate plate.

[0081] like Figure 8 , 11 As shown, when the elastic device 202 is in the first equilibrium state, the central axis of the spring 2021 forms an angle with the plane P connecting the two ends of the moving contact bridge 201, making the distance from the second end of the elastic device 202 to the moving contact bridge 201 less than the distance from the first end of the elastic device 202 to the moving contact bridge 201. At this time, the two elastic devices 202 cooperate to form a "﹀" shaped angled structure. The line connecting the hinge point o1 of the first connecting plate 2022 and the hinge point o2 of the second connecting plate 2023 forms an angle with the plane P connecting the two ends of the moving contact bridge 201. The spring 2021 is in the first compression state, and the elastic deformation direction of the spring 2021 forms an angle with the plane P connecting the two ends of the moving contact bridge 201, so that the elastic device 202 can apply pressure to the moving contact bridge 201, and the pressure direction is closer to the stationary contact 220. Figure 11 The middle line indicates the direction the arrow points to;

[0082] When a short-circuit fault occurs, the moving contact bridge 201 is repelled by electrodynamic force and moves relative to the contact support 200 in a direction away from the stationary contact 220. Figure 12As indicated by the middle arrow, the second end of each elastic device 202 moves accordingly. When it reaches the dead point position, the line connecting the hinge point o1 of the first connecting plate 2022 and the hinge point o2 of the second connecting plate 2023 is parallel to the plane P connecting the two ends of the moving contact bridge 201. At the dead point position, the spring 2021 is in the second compression state. At this time, the two elastic devices 202 work together to form a "--" structure. After the two elastic devices 202 pass the dead point position, they continue to move towards the second equilibrium position and finally maintain the second equilibrium position. When the side of the connecting piece 203 away from the moving contact bridge 201 contacts the stop wall 2002e, the moving contact bridge 201 stops moving. At this time, the distance from the second end of each elastic device 202 to the moving contact bridge 201 is greater than the distance from the first end of the elastic device 202 to the moving contact bridge 201. The line connecting the hinge point o1 of the first connecting plate 2022 and the hinge point o2 of the second connecting plate 2023 is parallel to the plane P connecting the two ends of the moving contact bridge 201. The plane P connecting the two ends of the moving contact bridge 201 forms an angle. In the second equilibrium position, the two elastic devices 202 cooperate to form an angle structure of "︿". However, under the action of the stop wall 2002e, the angle formed by the connecting line between the hinge point o1 and the hinge point o2 and the plane P connecting the two ends of the moving contact bridge 201 may be small. Each spring 2021 is in the third compression state. Compared with the first equilibrium position, the distance between the first connecting plate 2022 and the second connecting plate 2023 is reduced. One end of the guide rod 2024 slides with the middle of the second intermediate plate. The first connecting plate 2022 and the second connecting plate 2023 further compress the spring 2021. At this time, the elastic force applied by the two springs 2021 is relatively large. After the electrodynamic force decreases or disappears, the elastic device 202 that remains in the second equilibrium position can restrict the moving contact bridge 201 from moving towards the stationary contact 220, thus preventing the moving contact bridge 201 from reconnecting with the stationary contact 220.

[0083] It should be noted that the stop wall 2002e may not be provided in the assembly cavity, and the movement of the moving bridge 201 may be restricted by the elastic device 202 that switches to the second balance position.

[0084] like Figure 6-9 As shown, the first end of the stationary contact 220 is spaced apart from the moving contact assembly 21. The end of the first end is folded back and extended to form a stationary contact portion 22004. The stationary contact portion 22004 is spaced apart from the moving contact assembly 21. A stationary contact point 2201 is provided on the side of the stationary contact portion 22004 facing the moving contact assembly 21. A gap is left between the stationary contact portion 22004 facing away from the stationary contact point 2201 and the first end of the stationary contact 220. The middle part of the stationary contact 220 extends along one side of the arc-extinguishing chamber 24, so that the second end of the stationary contact 220 is connected to a terminal t.

[0085] In this embodiment, the stationary contact 220 includes a stationary contact plate 2200, which includes a first plate 22001 and a second plate 22002 that are parallel to each other and extend in opposite directions. Figure 8 In the first plate 22001 and the second plate 22002 extend in the second direction away from and towards the terminal t, respectively. The first plate 22001 and the second plate 22002 serve as the first end and the second end of the stationary contact 220, respectively. A connecting section 22003 connects the first plate 22001 and the second plate 22002. The end of the first plate 22001 extends and folds back to form a stationary contact portion 22004 that is spaced apart from the first plate 22001. A gap is left between the stationary contact portion 22004 and the first plate 22001. A stationary contact point 2201 is provided on the side of the stationary contact portion 22004 facing the moving contact portion 2011. The stationary contact point 2201 cooperates with the moving contact point 2012 of the moving contact portion 2011. The end of the stationary contact portion 22004 is deflected towards the first plate 22001 to form a connecting portion 22005.

[0086] In this embodiment, as Figure 2-8 As shown, each contact unit 2 also includes a unit housing 2h, a contact mechanism 20, an arc extinguishing system, and a terminal t, which are disposed within the unit housing 2h to facilitate the formation of a modular structure. Preferably, the contact mechanism 20 is disposed within the unit housing 2h, and the terminal t is disposed outside both ends of the unit housing 2h and correspondingly disposed within the wiring groove of the outer shell 1. The unit housing 2h has a through hole at the position corresponding to the terminal t, and the second end of the stationary contact 220 passes through the through hole and connects to the terminal t. The arc extinguishing system is disposed within the unit housing 2h between the contact mechanism 20 and one terminal t. Unit exhaust ports 2e, which communicate with the arc extinguishing system, are respectively provided at both ends of the unit housing 2h to facilitate the discharge of exhaust gas. The unit exhaust ports 2e correspond to the wiring groove of the outer shell 1, which can discharge exhaust gas and reduce the number of openings on the outer shell 1.

[0087] A linkage groove 20h is provided in the middle of the unit housing 2h. The central axis of the linkage groove 20h is parallel to the first direction. The moving contact assembly 21 and the linkage assembly 3A are linked and connected through the linkage groove 20h. The linkage part 200b slides through the linkage groove 20h and protrudes out of the unit housing 2h. It is used to link and connect with the electromagnetic operating system 3 and the adjacent moving contact assembly 21 respectively. Linking from the outside of the contact unit 2 can avoid affecting the inside. The electromagnetic operating system 3 is driven and connected to the transmission rod 3c connected between the two linkage parts 200b. It can drive all moving contact assemblies 21 synchronously and ensure the consistency of the operation of multiple moving contact assemblies 21.

[0088] like Figure 7As shown, a first limiting groove 22h is provided on both sides of the linkage groove 20h. Each first limiting groove 22h corresponds to the top of the arc extinguishing system in the first direction, and the bottom of the first limiting groove 22h is recessed into the unit housing 2h. This allows each electromagnetic drive mechanism 3m to be assembled in one first limiting groove 22h, reducing the height of its protrusion from the unit housing 2h in the first direction. This ensures assembly stability and also helps to reduce the overall height of the switching device. In this embodiment, the middle part of the bottom surface of the first limiting groove 22h is recessed into the unit housing 2h to form a stepped surface, and the lower part of the middle part is used to limit the electromagnetic drive mechanism. The coil assembly 32 in 3m has a higher region surrounding the lower central region as a magnetic yoke mounting groove 2g, in which the magnetic yoke disposed on the outside of the coil assembly 32 is correspondingly confined; at least on one side of the linkage groove 20h, a semi-circular groove is provided on the unit housing 2h, the semi-circular groove and the linkage groove 20h are arranged side by side in the third direction, and two adjacent unit housings 2h are arranged side by side, so that the two semi-circular grooves are joined to form a circular second limiting groove 2l, each second limiting groove 2l and the third limiting groove 33b are spaced apart and opposite to each other for limiting the assembly of an elastic reset member 7, so that each elastic reset member 7 is located between two adjacent linkage parts 200b.

[0089] like Figure 7 As shown, a limiting platform 23h is also provided inside the unit housing 2h corresponding to the linkage slot 20h. The limiting platform 23h is spaced apart from the stationary contact group 22, so that the moving contact bridge 201 can move between the stationary contact group 22 and the limiting platform 23h. When the circuit is open, the limiting part 201 abuts against the limiting platform 23h, thereby limiting the movement range of the moving contact bridge 201. When the moving contact bridge 201 is pushed away, the abutting cooperation between the limiting part 201 of the moving contact bridge 201 and the limiting platform 23h allows the contact support 200 to reset the elastic device 202 when it moves to the open position.

[0090] In this embodiment, each arc extinguishing system includes an arc extinguishing chamber 24, an arc-starting plate 27, and a magnetizing component 23. The arc extinguishing chamber 24 and the arc-starting plate 27 can adopt existing structures. Each moving contact portion 2011 and the stationary contact portion 22004 correspond to the arc inlet of the arc extinguishing chamber 24. One end of the arc-starting plate 27 is connected to the end of the stationary contact portion 22004. That is, one end of the arc-starting plate 27 is connected to the connecting portion 22005. The other end of the arc-starting plate 27 extends along one side of the arc inlet into the arc extinguishing chamber 24. The end of the arc extinguishing chamber 24 away from the arc inlet is provided with an exhaust port for discharging exhaust gas.

[0091] like Figure 6-9As shown, the magnetizing element 23 is preferably a strip-shaped plate structure. The middle part of the magnetizing element 23 passes through the gap between the stationary contact 22004 and the first end of the stationary contact 220. The two ends of the magnetizing element 23 are bent and extended towards the moving contact 2011 to form magnetizing walls. Each moving contact 2011 and the stationary contact 22004 are in contact or separated in the gap between the two magnetizing walls, which enhances the magnetic field at the moving contact 2011 and the stationary contact 22004. This facilitates the introduction of the electric arc generated when the contact mechanism 20 breaks into the arc extinguishing chamber 24, thereby improving the arc ignition and arc extinguishing efficiency.

[0092] In this embodiment, as Figure 9 As shown, each arc extinguishing system also includes a pair of arc-blocking plates 26. The two arc-blocking plates 26 are disposed opposite each other between the two magnetizing walls. A moving contact portion 2011 and a stationary contact portion 22004 contact or separate within the gap between the pair of arc-blocking plates 26. In this embodiment, the pair of arc-blocking plates 26 and the pair of magnetizing walls are all spaced opposite each other in the third direction. The arc-blocking plates 26 separate the arc from the magnetizing walls to prevent the arc from contacting the magnetizing walls.

[0093] Additionally, in this embodiment, as Figure 7 As shown, an arc-extinguishing channel 21h is provided inside the unit housing 2h. The arc-extinguishing channel 21h is connected between the unit exhaust port 2e and the exhaust hole. In the figure, the arc-extinguishing channel 21h is curved and extended, which is conducive to buffering and cooling the exhaust gas discharged from the arc-extinguishing chamber 24. Preferably, at least one metal partition 25 is also provided inside the arc-extinguishing channel 21h. The metal partition 25 is set at an angle with the side wall of the arc-extinguishing channel 21h to change the direction of gas flow and to block impurities in the exhaust gas from being discharged outside the unit housing 2h. At the same time, the metal partition 25 is also mainly used to filter charged or metal particles after arc ablation.

[0094] like Figure 7 , 8 As shown, each contact unit 2 also includes a current detection device 28 and a connection circuit board 29. The current detection device 28 is connected to the contact mechanism 20. The wiring terminal of the current detection device 28 extends to the outside of the unit housing 2h and is connected to the connection circuit board 29. The connection circuit board 29 is connected to the control circuit board of the control system.

[0095] In this embodiment, the current detection device 28 is connected to the middle of a stationary contact 220. In the figure, the middle of the stationary contact 220 is positioned along the gap between the arc-extinguishing chamber 24 and the unit housing 2h. The wiring terminal of the current detection device 28 is located on the side of the stationary contact 220 facing away from the arc-extinguishing chamber 24 and extends correspondingly out of the unit housing 2h, connecting to the circuit board (see [reference]). Figure 16 )29 is attached to the outer surface of the unit housing 2h and is connected to the control circuit board of the control unit by the connecting circuit board 29.

[0096] Preferably, a mounting groove 2p for mounting the connecting circuit board 29 is provided on the outer surface of the unit housing 2h. One end of the mounting groove 2p is linked to the terminal block, and the other end extends to one side of the adjacent electromagnetic drive mechanism 3m and communicates with the first limiting groove 22h used to limit the electromagnetic drive mechanism 3m, so that the connecting circuit board 29 and the electromagnetic drive mechanism 3m are connected to the control circuit board together. Figure 2 In the middle, two mounting slots 2p are opened on the outer surface of the unit housing 2h. The two mounting slots 2p are spaced apart and opposite each other in the second direction. The depth of each mounting slot 2p is greater than or equal to the thickness of the connecting circuit board 29, so that the connecting circuit board 29 set in the mounting slot 2p will not protrude from the outer surface of the unit housing 2h. In this way, the connecting circuit board 29 will not penetrate the contact unit 2 to interfere with the internal structure, nor will it increase the thickness of the switching device.

[0097] Combination Figure 15-16 A second embodiment of the switching device is provided.

[0098] The switching device includes a housing 1, inside which is a control system identical to that in the first embodiment and at least one contact unit 2. An electromagnetic operating system 3 is also provided inside the housing 1. The electromagnetic operating system 3 and the contact unit 2 are arranged along a first direction. The electromagnetic operating system 3 includes an electromagnetic drive mechanism 3m and a linkage component 3A. The structure of the electromagnetic drive mechanism 3m can be the same as in the first embodiment. However, unlike the first embodiment, the electromagnetic drive mechanism 3m, the linkage component 3A, and the contact mechanism 20 are arranged sequentially along the first direction. That is, in the first direction, the movement trajectory of the electromagnetic drive mechanism 3m no longer corresponds to the top of the arc-extinguishing system, but is collinear with the movement trajectory of the linkage component 3A. This increases the height of the switching device to a certain extent, but does not increase the overall width or thickness.

[0099] Furthermore, the linkage assembly 3A can be simplified to include only the linkage member 3b. The electromagnetic drive mechanism 3m and the linkage member 3b are arranged along the first direction. The linkage member 3b drives one or more contact units 2. Of course, the linkage assembly 3A can also include a linkage rod (not shown), but the central axis of the linkage rod is parallel to the first direction, and the two ends of the linkage rod are connected to the electromagnetic drive mechanism 3m and the linkage member 3b respectively. Of course, the linkage assembly 3A can also include only the linkage rod, but the linkage rod arranged along the first direction can only drive one contact unit 2. In this case, a drive hole along the first direction needs to be opened on the linkage part 200b for connection with the linkage rod.

[0100] Specifically, such as Figure 16As shown, the linkage component 3b has a plate-like structure. A first linkage hole 300b is provided in the middle of the linkage component 3b. The central axis of the first linkage hole 300b is parallel to the first direction. The opposite ends of the linkage component 3b are bent and extended in the same direction to form a pair of spaced-apart sidewalls. At least one second linkage hole 320b is provided on each sidewall. The central axis of the second linkage hole 320b is parallel to the third direction. At least one linkage part 200b of the contact unit 2 is provided with a transmission rod 3c. The transmission rod 3c is correspondingly engaged with the second linkage hole 320b, thereby realizing the electromagnetic drive mechanism 3 m drives the contact mechanism 20 to open and close the circuit; the gap between a pair of side walls can serve as a clearance groove 31b for the linkage 3b, which corresponds to the linkage part 200b of a contact support 200. Alternatively, when there are two or more contact units 2, the clearance groove 31b can simultaneously accommodate the linkage parts 200b of one or two contact units 2. Preferably, the clearance groove 31b corresponds to the linkage parts 200b of one or two contact units 2 located in the middle position, thereby facilitating the formation of a symmetrical structure and ensuring that the contact mechanism 20 of multiple contact units 2 is subjected to a balanced driving force.

[0101] In addition, in this embodiment, the electromagnetic operating system 3 may not need to be equipped with the elastic reset member 7.

[0102] It should be noted that in the description of this utility model, the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used during use. They are only for ease of description and do not indicate that the device or component referred to must have a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating relative importance.

[0103] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the protection scope of the present invention.

Claims

1. A switching device, comprising a housing (1), an electromagnetic operating system (3), and at least one contact unit (2), wherein the electromagnetic operating system (3) comprises an electromagnetic drive mechanism (3m) and a linkage component (3A), the electromagnetic drive mechanism (3m) moves along a first direction (Y), each contact unit (2) comprises two terminals (t) spaced apart along a second direction (X), a contact mechanism (20) is provided between the two terminals (t), and the linkage component (3A) is linked between the electromagnetic drive mechanism (3m) and the contact mechanism (20) of at least one contact unit (2), wherein the first direction (Y) is perpendicular to the second direction (X), characterized in that: The electromagnetic operating system (3) and the contact unit (2) are arranged along the first direction (Y), the linkage component (3A) and the contact mechanism (20) are arranged along the first direction (Y), and the electromagnetic drive mechanism (3m) and the linkage component (3A) are arranged side by side along the second direction (X). The electromagnetic drive mechanism (3m) drives the moving contact component (21) in at least one contact mechanism (20) to move in the first direction (Y) through the linkage component (3A).

2. The switching device according to claim 1, characterized in that: The electromagnetic operating system (3) includes two electromagnetic drive mechanisms (3m). In the second direction (X), the two electromagnetic drive mechanisms (3m) are spaced apart, and the linkage component (3A) is linked between the two electromagnetic drive mechanisms (3m).

3. The switching device according to claim 1 or 2, characterized in that: The electromagnetic operating system (3) further includes at least one elastic reset member (7). In the second direction (X), the elastic reset member (7) is disposed between two electromagnetic drive mechanisms (3m) for cooperating with the linkage component (3A) to drive the electromagnetic drive mechanism (3m) to reset. In the third direction (Z), two adjacent elastic reset members (7) are arranged at intervals. The third direction (Z) is perpendicular to the first direction (Y) and the second direction (X) respectively.

4. The switching device according to claim 1 or 2, characterized in that: The contact unit (2) also includes a unit housing (2h), and the contact mechanism (20) is disposed inside the unit housing (2h). A first limiting groove (22h) is provided on the outside of the unit housing (2h). The bottom of the first limiting groove (22h) is recessed in the direction of the unit housing (2h) to limit the assembly of the electromagnetic drive mechanism (3m).

5. The switching device according to claim 4, characterized in that: The contact mechanism (20) includes a moving contact assembly (21) and a stationary contact group (22) spaced apart in the first direction (Y). The moving contact assembly (21) has a linkage part (200b) on the side facing away from the stationary contact group (22). The linkage part (200b) extends from the linkage slot (20h) opened in the unit housing (2h) for driving cooperation with the linkage assembly (3A). Two adjacent linkage parts (200b) are arranged at intervals in the third direction (Z). The third direction (Z) is perpendicular to the first direction (Y) and the second direction (X) respectively.

6. The switching device according to claim 5, characterized in that: The moving contact assembly (21) includes a contact support (200), a moving contact bridge (201), and an elastic device (202). The linkage part (200b) is disposed on the side of the contact support (200) facing away from the moving contact bridge (201). The contact support (200) has an assembly cavity. The elastic device (202), the moving contact bridge (201), and the connector (203) disposed on the moving contact bridge (201) are disposed in the assembly cavity. The first end and the second end of the elastic device (202) are respectively connected to the connector (203) and the contact support (200).

7. The switching device according to claim 6, characterized in that: At least one limiting platform (23h) is provided inside the unit housing (2h). The limiting platform (23h) is spaced apart from the stationary contact group (22), and the moving contact bridge (201) moves between the limiting platform (23h) and the stationary contact (220).

8. The switching device according to claim 6, characterized in that: The stationary contact assembly (22) includes two stationary contacts (220) spaced apart in the second direction (X). Each stationary contact (220) is positioned along the side of the unit housing (2h). The first end of the stationary contact (220) is provided with a stationary contact portion (22004). The stationary contact portion (22004) is spaced apart from a moving contact portion (2011) of the moving contact assembly (21) in the first direction (Y). The second end of the stationary contact (220) is connected to an adjacent terminal (t).

9. The switching device according to claim 8, characterized in that: The first end of the stationary contact (220) is spaced apart from the moving contact assembly (21), and the end of the first end is folded back to form a stationary contact portion (22004). The stationary contact portion (22004) is spaced apart from a moving contact portion (2011) of the moving contact assembly (21). A magnetizing element (23) is provided in the gap between the stationary contact portion (22004) and the first end.

10. The switching device according to claim 8, characterized in that: Each contact unit (2) also includes a current detection device (28) connected to the middle of the stationary contact (220), and the terminals of the current detection device (28) extend outside the unit housing (2h).

11. The switching device according to claim 10, characterized in that: The current detection device (28) is also connected to a connecting circuit board, which is attached to the outer surface of the unit housing (2h).

12. The switching device according to claim 11, characterized in that: The outer surface of the unit housing (2h) is provided with a mounting groove (2p) for mounting the connecting circuit board. One end of the mounting groove (2p) is connected to the terminal block, and the other end is connected to the first limiting groove (22h) for limiting the electromagnetic drive mechanism (3m). The depth of the mounting groove (2p) is greater than or equal to the thickness of the connecting circuit board.

13. The switching device according to claim 4, characterized in that: At least two wiring slots are provided at both ends of the outer casing (1), and a wiring terminal (t) is provided in each wiring slot. Each wiring terminal (t) corresponds to a wire hole opened at both ends of the unit casing (2h).

14. The switching device according to claim 2, characterized in that: An arc-extinguishing system is provided between the contact mechanism (20) and the adjacent terminal (t), and the electromagnetic drive mechanism (3m) and the adjacent arc-extinguishing system are arranged along the first direction (Y).

15. The switching device according to claim 2, characterized in that: An operation key (b) is provided on the outside of the outer shell (1), and a control system is also provided inside the outer shell (1). The operation key (b) and the electromagnetic operating system (3) are respectively connected to the control system. Pressing the operation key (b) triggers the control system to drive the electromagnetic operating system (3) to operate.

16. The switching device according to claim 1, characterized in that: It includes two or more contact units (2) arranged side by side in a third direction (Z), and the moving contact assemblies (21) of two adjacent contact units (2) are linked together. The third direction (Z) is perpendicular to the first direction (Y) and the second direction (X) respectively.

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