Switching device

Abstract

A switching device comprises a shell, an electromagnetic operating system and at least one contact unit are arranged in the shell in the first direction, the electromagnetic operating system comprises a coil assembly and a moving assembly, the moving assembly is in driving connection with a moving contact assembly of the at least one contact unit, and a control circuit board is further arranged in the shell. The control circuit board and the electromagnetic operating system are arranged side by side in the second direction or the third direction, the coil assembly is connected with the control circuit board and used for driving the moving assembly to move between the first position and the second position so as to drive the moving contact assembly to move in the first direction, and the first direction, the second direction and the third direction are perpendicular to one another. In the invention, the control circuit board is separated from the contact unit and is arranged side by side with the electromagnetic operating system, so that the space in the shell is reasonably utilized, and the reliability of the product is improved.

Description

Technical Field

[0001] The invention relates to the field of low-voltage electrical appliances, and in particular to a switch device. Background Art

[0002] A switch device is a device that controls the on and off of a circuit. The switch device includes an electromagnetic operating system and at least one contact unit, wherein the electromagnetic operating system is usually arranged in a contact unit, or the electromagnetic operating system is arranged in a separate module. In order to minimize the volume of the switch device as much as possible, a control circuit board for controlling the electromagnetic operating system is arranged in one of the contact units. However, since the contact unit is usually provided with a contact mechanism and an arc extinguishing system, the high temperature generated during its operation process or arc extinguishing process is likely to have an adverse effect on the control circuit board. At the same time, the distance between the electromagnetic operating system and the control circuit board is large, which is not conducive to the wiring of the electromagnetic operating system and the control circuit board, ultimately resulting in low reliability of the product. Summary of the invention

[0003] The object of the present invention is to overcome at least one defect of the prior art and provide a switch device with simple structure and high reliability.

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] The present invention provides a switch device, comprising a shell, in which an electromagnetic operating system and at least one contact unit are arranged along a first direction, the electromagnetic operating system comprising a coil assembly and a moving assembly, the moving assembly is drivingly connected to a moving contact assembly of at least one contact unit, a control circuit board is also arranged in the shell, the control circuit board is arranged side by side with the electromagnetic operating system in a second direction or a third direction, the coil assembly is connected to the control circuit board to drive the moving assembly to move between a first position and a second position to drive the moving contact assembly to move along the first direction, and the first direction, the second direction and the third direction are perpendicular to each other.

[0006] Preferably, the control circuit board is divided into at least two sub-circuit boards, and in the third direction, at least two sub-circuit boards are respectively located on two opposite sides of the electromagnetic operating system, or all sub-circuit boards are located on the same side of the electromagnetic operating system.

[0007] Preferably, it comprises a control circuit board and at least two contact units, two adjacent contact units are arranged side by side in the second direction, and the control circuit board spans one or two contact units along the second direction.

[0008] Preferably, the control circuit board is divided into two sub-circuit boards, and in the third direction, the two sub-circuit boards are respectively located on both sides of the electromagnetic operating system.

[0009] Preferably, the control circuit board is divided into two sub-circuit boards. In the third direction, the two sub-circuit boards are arranged on the same side of the electromagnetic operating system, and the two sub-circuit boards are connected at an angle.

[0010] Preferably, it includes a control circuit board and a contact unit, wherein the control circuit board is divided into two sub-circuit boards, and in the third direction, the two sub-circuit boards are located on both sides of the electromagnetic operating system, and the plane where each sub-circuit board is located is parallel to the first direction and the third direction at the same time.

[0011] Preferably, each contact unit further comprises a pair of wiring assemblies spaced apart along the third direction, and the contact mechanism of each contact unit is arranged between the pair of wiring assemblies.

[0012] Preferably, the contact unit further comprises a current detection device, which is connected to the main circuit of each contact unit and feeds back a current signal to the control circuit board.

[0013] Preferably, the control circuit board is further connected to a connecting circuit board, and a plane where the connecting circuit board is located is parallel to both the first direction and the third direction.

[0014] Preferably, in the third direction, the connecting circuit board is located between the contact mechanism and a wiring assembly, or the connecting circuit board is located between a pair of wiring assemblies and is stacked with the contact mechanism in the second direction.

[0015] Preferably, each contact unit comprises a housing, and the connecting circuit board is arranged along the outer side of the housing.

[0016] Preferably, each contact unit also includes two arc extinguishing systems, each arc extinguishing system is correspondingly arranged in a shell between a wiring assembly and a contact mechanism, an exhaust port is opened on the shell close to the wiring assembly, and a baffle is provided between the connecting circuit board and the exhaust port.

[0017] Preferably, the control circuit board and / or the connection circuit board is provided with a signal port, and a socket is provided in the housing opposite to the signal port.

[0018] Preferably, the coil assembly comprises a coil frame, two coils are wound around the middle of the coil frame, each coil is connected to a control circuit board, and a magnet is disposed at opposite ends of the coil frame.

[0019] Preferably, the coil assembly includes a coil frame, two coils are wound around the middle of the coil frame, two magnets are arranged between the two coils, and the two magnets form a symmetrical structure about the central axis of the coil frame, and a yoke is arranged around the outside of the coil frame, and the yoke can be magnetized by the magnet.

[0020] Preferably, the moving assembly includes a moving iron core and a driving rod, the moving iron core is slidably assembled in the middle part of the coil frame between the two magnets, the driving rod is connected to the moving iron core and at least one end of the driving rod extends out of the coil frame for driving connection with the moving contact assembly, and when the two coils are energized, the moving iron core is driven to move between a first position and a second position along a first direction.

[0021] Preferably, two ends of the driving rod of the moving iron core extend out of the coil frame and are connected to the operating member and the moving contact assembly.

[0022] Preferably, the housing includes a base and a cover body, the cover body covers the base in a first direction, at least one partition is arranged in the base, the space in the base is divided by the partition into at least two assembly cavities arranged in parallel in a second direction, each assembly cavity is provided with a contact unit, and in the first direction, the electromagnetic operating system is arranged in the space between the cover body and the contact unit.

[0023] Preferably, the two ends of the shell serve as wiring terminals, the connecting line between the two wiring terminals is parallel to the third direction, the middle part of the shell between the two wiring terminals protrudes outward along the first direction to form an operating end, the electromagnetic operating system is correspondingly arranged in the space inside the operating end, and the contact mechanism is correspondingly arranged in the two wiring terminals and the shell between the operating ends.

[0024] In the switch device of the present invention, the control circuit board is separated from the contact unit and arranged side by side with the electromagnetic operating system, which not only shortens the wiring distance between the electromagnetic operating system and the control circuit board, but also avoids interference between the contact unit and the control circuit board, so that the space in the shell is reasonably utilized, and the reliability of the product is improved.

[0025] In addition, the control circuit board is divided into at least two sub-circuit boards, and the sub-circuit boards can be arranged on one side or both sides of the electromagnetic operating system at the same time, which is conducive to the decentralized assembly of the control circuit boards and the switch devices that meet different needs, and has strong applicability.

[0026] In addition, the assembly position of the connecting circuit board connected to the control circuit board is more flexible, which is convenient for connecting the control circuit board and fully utilizes the space inside the shell. In particular, the connecting circuit board is arranged along the outer side of the shell of the contact unit, avoiding interference of the contact unit on the connecting circuit board.

[0027] In addition, the coil assembly of the electromagnetic operating system includes two coils, which is conducive to ensuring its driving stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a schematic structural diagram of the switch device of the present invention with the cover removed;

[0029] Figure 2It is a structural schematic diagram of the control circuit board and the electromagnetic operating system in the present invention (multiple contact units);

[0030] Figure 3 It is a structural schematic diagram of a control circuit board and a connection circuit board in the present invention;

[0031] Figure 4 It is a structural schematic diagram of the control circuit board and the electromagnetic operating system in the present invention (a contact unit);

[0032] Figure 5 It is a structural schematic diagram of the current detection device and the connection circuit board in the present invention;

[0033] Figure 6 is a cross-sectional view of a first electromagnetic operating system of the present invention;

[0034] Figure 7 yes Figure 6 A partial enlarged view of the middle A part;

[0035] Figure 8 yes Figure 6 A partial enlarged view of part B in the middle;

[0036] Fig. 9 yes Figure 6 A partial enlarged view of the middle C part;

[0037] Fig.10 It is a schematic diagram of the coordination of the coil, the moving iron core and the magnet in the first electromagnetic operating system of the present invention (first position);

[0038] Fig.11 It is a schematic diagram of the coordination of the coil, the moving iron core and the magnet in the first electromagnetic operating system of the present invention (second position);

[0039] Fig.12 is a cross-sectional view of a second electromagnetic operating system of the present invention;

[0040] Fig.13 It is a schematic diagram of a coil skeleton and a driving rod in a second electromagnetic operating system of the present invention;

[0041] Fig.14 is a cross-sectional view (at the magnet) of the second electromagnetic operating system of the present invention;

[0042] Fig.15 It is a schematic diagram of the coordination of the coil, the moving iron core and the magnet in the second electromagnetic operating system of the present invention (first position);

[0043] Fig.16 It is a schematic diagram of the coordination of the coil, the moving iron core and the magnet in the second electromagnetic operating system of the present invention (second position);

[0044] Reference numerals:

[0045] 1-housing, 11-base, 12-cover, 13-partition, 14-wiring port, 2-contact unit, 21-housing, 211-linkage slot, 216-baffle, 218-magnetic plate mounting slot, 220-moving contact assembly, 2211-linkage shaft, 2231-conductive plate, 232-magnetic plate, 24-wiring assembly, 3-electromagnetic operating system, 30-operating member, 31-coil skeleton, 310-partition, 311-baffle, 312-winding shaft, 313-magnet cavity , 314-limiting boss, 32-magnet, 321-first magnet, 322-second magnet, 33-moving iron core, 34-coil, 341-first coil, 342-second coil, 35-yoke, 351-first straight plate, 352-second straight plate, 36-buffer plate, 37-driving rod, 38-clamping piece, 4-linkage plate, 511-transmission circuit board, 52-manganese copper shunt, 6-control circuit board, 60-signal port, 61-distribution circuit board, 63-connection circuit board. DETAILED DESCRIPTION

[0046] The following is a further description of the specific implementation of the switch device of the present invention in conjunction with the embodiments given in the accompanying drawings. The switch device of the present invention is not limited to the description of the following embodiments.

[0047] The switch device includes a shell 1, in which an electromagnetic operating system 3 and at least one contact unit 2 are arranged. The electromagnetic operating system 3 is connected to a control circuit board 6 arranged in the shell 1. The control circuit board 6 is provided with a controller for controlling the electromagnetic operating system 3. The electromagnetic operating system 3 drives the contact unit 2 to open and close. That is, when there is one contact unit 2 arranged in the shell 1, the electromagnetic operating system 3 directly or indirectly drives the contact unit 2. When at least two contact units 2 are arranged in the shell 1, the electromagnetic operating system 3 is directly or indirectly driven and connected to one of the contact units 2. Two adjacent contact units 2 are linked and connected so as to be indirectly driven by the electromagnetic operating system 3, thereby realizing synchronous opening and closing of multiple contact units 2.

[0048] Specifically, the electromagnetic operating system 3 includes a coil assembly and a moving assembly, and the coil assembly drives the moving assembly to move between a first position and a second position; each contact unit 2 includes at least a pair of wiring assemblies 24 and a contact mechanism, the contact mechanism is arranged between the pair of wiring assemblies 24, the contact mechanism includes a moving contact assembly 220 and two static contacts, the moving contact assembly 220 of at least one contact unit 2 is directly or indirectly driven and connected to the moving assembly, and the moving contact assemblies 220 of two adjacent contact units 2 are linked and connected, and the driving method adopts the existing technology; the moving contact assembly 220 includes a contact support and a moving contact bridge arranged on the contact support, the moving assembly is directly or indirectly driven and connected to the contact support, and the two adjacent moving contact assemblies 220 are linked and connected through the contact support, and a moving contact part is respectively arranged at both ends of the moving contact bridge, each moving contact part is respectively matched with the static contact part of a static contact, and each static contact is respectively connected to an adjacent wiring assembly 24, one wiring assembly 24 is used for incoming lines, and the other wiring assembly 24 is used for outgoing lines.

[0049] Furthermore, the contact unit 2 also includes two arc extinguishing systems, each arc extinguishing system is arranged on one side of the contact mechanism, and is used to extinguish the arc generated when the contact mechanism is disconnected. In addition, the contact unit 2 can also include a current detection device, which is connected to the control circuit board 6 for feedback of the collected current.

[0050] For the convenience of description, the moving direction of the moving component in the electromagnetic operating system 3 is taken as the first direction. Figure 2 In the example, the direction of the Y axis is the first direction, and the two directions perpendicular to the first direction are the second direction and the third direction. The second direction and the third direction are perpendicular to each other. Figure 2 The direction of the X-axis is taken as the second direction, and the direction of the Z-axis is taken as the third direction. When at least two contact units 2 are arranged in the housing 1, two adjacent contact units 2 are arranged in parallel along the second direction, and a pair of wiring components 24 in each contact unit 2 are arranged at intervals along the third direction, that is, the connecting line between the pair of wiring components 24 is parallel to the third direction.

[0051] The improvement of the present application is that the control circuit board 6 is arranged side by side with the electromagnetic operating system 3 in the second direction or the third direction, and the coil assembly is connected to the control circuit board 6 to drive the moving assembly to move between the first position and the second position to drive the moving contact assembly 220 to move along the first direction. In this way, the control circuit board 6 is separated from the contact unit 2 and arranged side by side with the electromagnetic operating system 3, which not only shortens the wiring distance between the electromagnetic operating system 3 and the control circuit board 6, but also avoids the interference of the contact unit 2 with the corresponding control circuit board 6, so that the space in the housing 21 is reasonably utilized, and the reliability of the product is improved.

[0052] Further, such as Figure 2-4 As shown, the control circuit board 6 is divided into at least two sub-circuit boards 61. In the third direction, at least two sub-circuit boards 61 are respectively located on opposite sides of the electromagnetic operating system 3, or all sub-circuit boards 61 are located on the same side of the electromagnetic operating system 3. Preferably, the sub-circuit boards 61 located on the same side can be connected at an angle to fully utilize the space in the housing 1. Of course, the control circuit board 6 can also be an integral structure, and its setting position can refer to the setting position of any sub-circuit board 61, but it may occupy more space in the housing 1.

[0053] In addition, if Figure 3 , 4 As shown, the control circuit board 6 is also connected to a connecting circuit board 63, and the plane where the connecting circuit board 63 is located is parallel to the first direction and the second direction at the same time. In this way, the connecting circuit board 63 is stacked with the contact unit 2 in the second direction, and the connecting circuit board 63 can be located between the contact mechanism and a wiring assembly 24, or the connecting circuit board 63 is stacked with the contact mechanism. The connecting circuit board 63 is used to connect with other components in the housing 1, which is convenient for connecting with the control circuit board 6 and can make full use of the space in the housing 1. In particular, when each contact unit 2 is respectively provided with a shell 21, the connecting circuit board 63 is arranged along the outer side of the shell 21, so as to avoid the interference of the contact unit 2 with the connecting circuit board 63. Combined with Figure 1-16 A specific embodiment of a switch device is provided.

[0054] like Figure 1 , 2 As shown in Figure 4, the switch device includes a housing 1, in which an electromagnetic operating system 3 and at least one contact unit 2 are arranged, wherein the electromagnetic operating system 3 and the contact unit 2 are arranged in the housing 1 along a first direction, when there are at least two contact units 2 in the housing 1, the two contact units 2 are arranged in parallel in the second direction, in this embodiment, four contact units 2 arranged in parallel in the second direction are arranged in the housing 1, each contact unit 2 includes a pair of wiring components 24, a contact mechanism and two arc extinguishing systems, wherein a pair of wiring components 24 are arranged at intervals in a third direction, the contact mechanism is arranged between a pair of wiring components 24, and an arc extinguishing system is arranged between the contact mechanism and a wiring component 24, and the arc extinguishing system cooperates to extinguish the arc generated when the contact mechanism is opened.

[0055] like Figure 1-3As shown, two ends of the housing 1 are respectively used as wiring terminals, and the connecting line between the two wiring terminals is parallel to the third direction. The middle part of the housing 1 between the two wiring terminals protrudes outward along the first direction to form an operating end, and the operating end is provided with a driving hole. The housing 1 includes a base 11 and a cover body 12, wherein the cover body 12 covers the base 11 in the first direction, and the driving hole is opened on the cover body 12. Three partitions 13 are arranged in the base 11, and two adjacent partitions 13 are arranged at intervals in the second direction. The space in the base 11 is divided into four assembly cavities by the partitions 13, and a contact unit 2 is arranged in each assembly cavity. The same end of all the assembly cavities forms a wiring cavity correspondingly, and a wiring port 14 is provided in the wiring cavity; the electromagnetic operating system 3 and the control circuit board 6 are arranged between the base 11 and the cover body 12, that is, between the contact unit 2 and the cover body 12 in the first direction. The electromagnetic operating system 3 and the control circuit board 6 correspond to the inside of the operating end of the housing 1, and an avoidance gap is opened at the edge of each partition 13 close to the electromagnetic operating system 3 to avoid interfering with the action of the electromagnetic operating system 3.

[0056] like Figure 1-4 As shown in , 6, the control circuit board 6 and the electromagnetic operating system 3 are arranged side by side in the second direction or the third direction. In particular, when the housing 1 is provided with at least two contact units 2, the control circuit board 6 spans one or two contact units 2 along the second direction. Specifically, when two contact units 2 are provided in the housing 1, the control circuit board 6 spans all the contact units 2 in the second direction. When three or more contact units are provided in the housing 1, the control circuit board 6 spans one or two of the contact units 2, preferably spans one or two contact units 2 located in the middle position.

[0057] Preferably, the control circuit board 6 is divided into at least two sub-circuit boards 61, and the two sub-circuit boards 61 are respectively located on opposite sides of the electromagnetic operating system 3, or the two sub-circuit boards 61 are respectively located on the same side of the electromagnetic operating system 3, which is conducive to the dispersed assembly of the control circuit board 6 to meet the switching device with different needs and has strong applicability.

[0058] Specific as Figure 4As shown, when two sub-circuit boards 61 are respectively located on opposite sides of the electromagnetic operating system 3, if a contact unit 2 is provided in the shell 1, the plane where each sub-circuit board 61 is located is parallel to the first direction and the third direction at the same time. At this time, the sub-circuit board 61 is in contact with the inner wall of the shell 1 in the second direction, so that the space occupied by the sub-circuit board 61 in the second direction can be avoided, that is, it is beneficial to reduce the thickness of the switch device; if at least two contact units 2 are provided in the shell 1, preferably, the plane where each sub-circuit board 61 is located is parallel to the first direction and the second direction at the same time. At this time, each sub-circuit board 61 can cross one or two contact units 2 in the second direction, that is, when two contact units 2 are provided in the shell 1, the sub-circuit board 61 crosses all the contact units 2, and when three or more contact units 2 are provided in the shell, the sub-circuit board 61 crosses one or two of the contact units 2 (assembly cavity), so as to facilitate the wiring of the sub-circuit board 61 with each contact unit 2.

[0059] like Figure 3 As shown, in the third direction, two sub-circuit boards 61 can also be arranged on the same side of the electromagnetic operating system 3, and the two sub-circuit boards 61 are connected at an angle. In the figure, the two sub-circuit boards 61 are connected vertically to each other, one of the sub-circuit boards 61 is closer to the electromagnetic operating system 3, and its plane is parallel to the first direction and the second direction at the same time, and the plane of the other sub-circuit board 61 is parallel to the second direction and the third direction at the same time. Such a structure is suitable for at least two contact units 2 to be arranged in the housing 1. Of course, the control circuit board 6 can also be an integrated structure, and its assembly position with the electromagnetic operating system 3 can refer to the setting position of any sub-circuit board 61, but it may occupy more space in the housing 1. In addition, a signal port 60 can be arranged on the control circuit board 6, and a socket is opened in the housing 1 area corresponding to the signal port 60. The signal port 60 and the socket can be located on the operating end of the housing 1. Of course, the signal port 60 can also be arranged at other positions of the housing 1.

[0060] like Figure 1-4As shown in 6-11, the electromagnetic operating system 3 includes a coil assembly, a yoke 35 and a moving assembly, wherein the coil assembly is connected to a control circuit board 6 disposed in the housing 1, and a control signal is output by a controller of the control circuit board 6 to drive the moving assembly to move between a first position and a second position by controlling the current of the coil assembly, and the coil assembly includes a coil skeleton 31, a yoke 35 is disposed around the outer side of the coil skeleton 31, and two coils 34 are wound around the middle of the coil skeleton 31, and the two coils 34 are distributed along the axial direction of the coil skeleton 31, that is, the two coils 34 are distributed along the first direction, and each coil 34 is respectively connected to the control circuit board 6. In this embodiment, each coil 34 can be connected to a corresponding sub-circuit board 61, and the controller of the control circuit board 6 controls whether the coil 34 is energized and Direction of current; The coil skeleton 31 is also equipped with two magnets 32, and the two magnets 32 can be respectively arranged at the opposite ends of the coil skeleton 31, or the magnets 32 are arranged correspondingly in the middle of the coil skeleton 31 and are located between the two coils 34. The magnets 32 can magnetize the adjacent yokes 35, and a moving component is slidably assembled in the middle of the coil skeleton 31, and the coil component drives the moving component to move between the first position and the second position, that is, if the two magnets 32 are arranged at the two ends of the coil skeleton 31, the magnets 32 and the coils 34 jointly drive the moving component, so that the moving component is attracted to one magnet 32 ​​in the first position and attracted to the other magnet 32 ​​in the second position; if the two magnets 32 are located between the two coils 34, the magnets 32 and the magnetized yokes 35 jointly drive the moving component.

[0061] The moving component includes a moving iron core 33, wherein the moving iron core 33 is slidably arranged in the middle of the coil frame 31, that is, the moving iron core 33 is located between the two magnets 32. When the power is on, the two coils 34 drive the moving iron core 33 to move between the first position and the second position. At least one end of the driving rod 37 connected to the moving iron core 33 passes through the magnet 32 ​​and extends out of the coil frame 31, and is directly or indirectly driven and connected to the moving contact assembly 220 of at least one contact unit 2 by the driving rod 37.

[0062] Furthermore, the moving component also includes a driving rod 37, which is connected to the moving iron core 33 and is driven by the moving iron core 33 to move axially along the coil frame 31, and at least one end of the driving rod 37 passes through one of the magnets 32 and extends out of the coil frame 31, and is used to connect with the moving contact assembly 220 of at least one contact unit 2, so as to realize the driving of the contact unit 2 by the electromagnetic operating system 3. In this embodiment, when the moving component moves to the first position, the contact mechanism of the contact unit 2 is opened, and when the moving component moves to the second position, the contact mechanism of the contact unit 2 is closed.

[0063] Preferably, the moving component is also connected to an operating member 30, which extends outside the housing 1. The electromagnetic operating system 3 can be operated from the outside through the operating member 30 to move the moving component between the first position and the second position, thereby driving the contact mechanism of the contact unit 2 to open. In this way, the moving component of the electromagnetic operating system 3 can be manually operated and driven by the coil assembly, thereby improving the operational reliability of the switching device.

[0064] Furthermore, the electromagnetic operating system 3 also includes two buffer plates 36, each buffer plate 36 is arranged between the moving iron core 33 and a magnet 32. Preferably, each buffer plate 36 is correspondingly arranged at one end of the coil frame 31, and the buffer plate 36 is correspondingly located between the magnet 32 ​​and the moving iron core 33. The buffer plate 36 buffers the impact force of the moving iron core 33 on the magnet 32, which is beneficial to extending the service life.

[0065] In addition, the electromagnetic operating system 3 also includes a yoke 35, which is arranged around the outer side of the coil frame 31. The yoke 35 is provided with a through hole for the driving rod 37 to pass through. The through hole provided on the yoke 35 corresponds to the through hole provided on the magnet 32. Preferably, the yoke 35 includes two yoke plates, each of which is correspondingly arranged around one end of the coil frame 31 and around the outer side of a coil 34.

[0066] Provide a specific structure of the first electromagnetic operating system 3, such as Figure 6-11 As shown, the electromagnetic operating system 3 includes a coil assembly and a moving assembly, wherein the coil assembly includes a coil frame 31, Figure 7-9 In the embodiment, the coil skeleton 31 includes two spaced retaining walls 311, a hollow winding shaft 312 is connected between the two retaining walls 311, a receiving groove is provided in the middle of the surface of one side of each retaining wall 311 facing away from the winding shaft 312, the bottom of each receiving groove is connected to the hollow part of the winding shaft 312, a buffer plate 36 and a magnet 32 ​​are provided in each receiving groove, corresponding through holes are provided in the middle of the buffer plate 36 and the magnet 32, the hollow part of the winding shaft 312 is used as a sliding cavity, the buffer plate 36 and the magnet 32 ​​are connected to each other, and the hollow part of the winding shaft 312 is used as a sliding cavity. 2 is coaxial with the sliding cavity; a partition 310 is also provided in the middle of the coil skeleton 31, and the partition 310 is protruded along the outer side of the middle part of the coil skeleton 31, that is, a partition 310 is protruded on the outer wall of the middle part of the winding shaft 312, and the partition 310 divides the space between the two retaining walls 311 into two accommodating cavities, and the partition 310 divides the middle part of the coil skeleton 31 into two parts. Preferably, a limiting groove is opened on the partition 310, and the limiting groove is preferably opened along the circumferential direction of the partition 310.

[0067] A magnetic yoke 35 is disposed around the coil assembly. Figure 6As shown, the yoke 35 includes two yoke plates, each of which includes a first straight plate 351 and two second straight plates 352, wherein the first straight plate 351 is correspondingly covered on a magnet 32, and the two second straight plates 352 are respectively arranged on opposite sides of the coil skeleton 31, one end of each second straight plate 352 is connected to one end of the first straight plate 351, and the other end of each second straight plate 352 is bent and extended toward the middle of the coil skeleton 31, and preferably, the other end of each second straight plate 352 is inserted and limited in the limiting groove of the partition 310 to ensure the overall matching stability of the mechanism, so that each yoke plate encloses the accommodating cavity to form a coil installation cavity, and two coils 34 are wound on the winding shaft 312, each coil 34 is correspondingly located in a coil installation cavity, and the two coils 34 are separated by the partition 310, and at least one of the first straight plates 351 is provided with a through hole coaxial with the sliding cavity. In this embodiment, the middle parts of the two first straight plates 351 are both provided with through holes.

[0068] The moving assembly includes a moving iron core 33 and a driving rod 37, wherein the moving iron core 33 is slidably assembled in the sliding cavity, and a driving rod 37 is arranged in the middle of the moving iron core 33, wherein the two ends of the driving rod 37 extend out from the through holes of the buffer plate 36 and the magnet 32 ​​respectively, and the moving iron core 33 and the driving rod 37 are both made of magnetic conductive material, and the moving iron core 33 and the driving rod 37 can be an integral structure or two separate components. In the present embodiment, the driving rod 37 and the moving iron core 33 are two separate components, and a clamping piece 38 is arranged in the middle of the driving rod 37. Preferably, the clamping piece 38 is arranged on the driving rod 37 along an axial direction perpendicular to the driving rod 37, and a through groove for the driving rod 37 to pass through is opened in the middle of the moving iron core 33, and a clamping groove for limiting the clamping piece 38 is arranged in the through groove.

[0069] In this embodiment, a clamping piece 38 is respectively provided at both ends of the driving rod 37, and a connecting groove is opened on the operating member 30. One end of the driving rod 37 is inserted into the connecting groove, and a clamping groove for limiting the clamping piece 38 is provided in the connecting groove. The other end of the driving rod 37 can directly or indirectly drive a contact unit 2. When the other end of the driving rod 37 is directly driven and connected to the contact unit 2, that is, the other end of the driving rod 37 is connected to the moving contact assembly 220, a clamping groove that cooperates with the clamping piece 38 for limiting is provided on the moving contact assembly 220. When the other end of the driving rod 37 indirectly drives the contact unit 2, a linkage plate 4 is connected to the driving rod 37, and at this time, at least a clamping groove for limiting the clamping piece 38 is opened on the linkage plate 4. Of course, the connection method between the drive rod 37 and the moving iron core 33, the linkage plate 4 and the operating member 30 can also adopt other fastening structures, such as bonding, threaded connection, etc. The other end of the operating member 30 slides through the drive hole opened at the operating end (cover body 12) and extends outside the outer shell 1, thereby realizing the operation of the electromagnetic operating system 3 from the outside.

[0070] In this structure, the opposite ends of the two magnets 32 have opposite magnetic properties. When powered on, the adjacent ends of the two coils 34 have the same magnetic properties. A repulsive force is generated between one magnet 32 ​​and the adjacent coil 34, and a magnetic attraction is generated between the other magnet 32 ​​and the adjacent coil 34. The moving iron core 33 is driven by both the repulsive force and the magnetic attraction, so that the driving force for the movement of the moving iron core 33 is reliably guaranteed.

[0071] The specific principle is as follows Fig.10 , 11 As shown, the upper position in the figure is the first position, and the lower position in the figure is the second position, wherein the magnet 32 ​​close to the first position is the first magnet 321, and the magnet 32 ​​close to the second position is the second magnet 322, the coil 34 close to the first position is the first coil 341, and the coil 34 close to the second position is the second coil 342. In the figure, the N pole of the first magnet 321 faces the S pole of the second magnet 322.

[0072] When the second current is applied, the magnetic pole at one end adjacent to the first coil 341 and the second coil 342 is an S pole, and the end of the first coil 341 facing the first magnet 321 is an N pole, and the N poles of the first magnet 321 and the first coil 341 are opposite, so that a repulsive force is generated between the two. The end of the second coil 342 facing the second magnet 322 is an N pole, and the N pole and S pole of the second magnet 322 and the second coil 342 are opposite, so that a magnetic attraction is generated between the two. The moving iron core 33 is driven away from the first magnet 321 by the repulsive force, and is driven close to the second magnet 322 by the magnetic attraction and remains attracted to the second magnet 322.

[0073] When the first current is passed, the magnetic pole at one end adjacent to the first coil 341 and the second coil 341 is the N pole, and the end of the first coil 341 facing the first magnet 321 is the S pole. The N pole and S pole of the first magnet 321 and the first coil 341 are opposite to each other, and a magnetic attraction force is generated between the two. The end of the second coil 342 facing the second magnet 322 is the S pole. The S pole of the second coil 342 and the second magnet 322 are opposite to each other, and a repulsive force is generated between the two. The moving iron core 33 moves away from the second magnet 322 under the action of the repulsive force, and approaches the first magnet 321 and remains attracted to the first magnet 321 under the action of the magnetic attraction force, wherein the first current is in opposite directions to the second current.

[0074] Preferably, when the moving iron core 33 remains attracted to one of the magnets 32, the two coils 34 are de-energized, which is beneficial to energy saving; the axial length of the moving iron core 33 is greater than the axial length of each coil 34, which is beneficial for each coil 34 to apply driving force to the moving iron core 33 when energized. In the figure, L1 represents the axial length of the moving iron core 33, and L2 represents the length of the coil 34.

[0075] Combination Figure 12-16A specific structure of a second electromagnetic operating system 3 is provided.

[0076] The electromagnetic operating system 3 includes a coil assembly, a yoke 35 and a moving assembly. The coil assembly includes a coil frame 31. The yoke 35 is surrounded and arranged on the outside of the coil frame 31. Two coils 34 are wound in the middle of the coil frame 31. The two coils 34 are distributed along the axis of the coil frame 31. Two magnets 32 are limitedly arranged between the two coils 34. That is, the two magnets 32 are respectively corresponding to the opposite sides of the middle of the coil frame 31 for magnetizing the yoke 35, and in the axial direction of the coil frame 31, the magnet 32 ​​is located between the two coils 34. At this time, the two magnets 32 form a symmetrical structure about the central axis of the coil frame 31.

[0077] In the present structure, the coil skeleton 31 includes two spaced-apart retaining walls 311, a hollow winding shaft 312 is connected between the two retaining walls 311, the middle of each retaining wall 311 is respectively connected to the hollow part of the winding shaft 312, the hollow part of the winding shaft 312 serves as a sliding cavity, and a protrusion is also provided in the middle of the coil skeleton 31, the protrusion is protruding along the outer side of the middle part of the coil skeleton 31, that is, a protrusion is protruding on the outer wall of the middle part of the winding shaft 312, the protrusion divides the space between the two retaining walls 311 into two accommodating cavities, and a magnet cavity 313 is formed inside each protrusion, and a magnet 32 ​​is arranged in each magnet cavity 313. Preferably, the cavity shape of the two magnet cavities 313 is irregular, so as to realize the anti-fool function, and further, a limiting boss 314 is provided in the magnet cavity 313, and the limiting boss 314 can abut against the magnet 32 ​​to limit the magnet 32.

[0078] like Fig.12 As shown, the yoke 35 includes two yoke plates arranged at intervals, each of which is respectively fitted at the two ends of the coil frame 31, and each yoke plate is provided with a through hole for the moving component to pass through, and the through hole is connected to the sliding cavity, and the two ends of one of the yoke plates extend along the axial direction of the coil frame 31 to form two side plates, and the two side plates are located on the opposite sides of the coil frame 31 and connected to the other yoke plate, so that the yoke 35 as a whole forms a closed frame structure.

[0079] The moving assembly is the same as the moving assembly of the first electromagnetic operating system 3, and includes a moving iron core 33 and a driving rod 37, wherein the moving iron core 33 is slidably assembled in the sliding cavity, and a driving rod 37 is provided in the middle of the moving iron core 33, wherein the two ends of the driving rod 37 extend out from the through holes of the yoke 35 respectively, and the driving rod 37 is also provided with a clamping member 38. Compared with the first electromagnetic operating system 3, the present structure can omit the buffer plate 36, and at the same time simplifies the structure of the yoke 35, and correspondingly increases the magnetic field strength of the yoke 35.

[0080] In this structure, the opposite ends of the two magnets 32 have the same magnetic properties. When powered on, the adjacent ends of the two coils 34 have opposite magnetic properties. The other end of one coil 34 has the same magnetic properties as the magnetized yoke 35, and the other end of the other coil 34 has opposite magnetic properties to the magnetized yoke 35. The moving iron core 33 is driven jointly by the coil 34 and the magnetized yoke 35.

[0081] The specific principle is as follows Fig.14 , 15 As shown, the upper position in the figure is the first position, and the lower position in the figure is the second position, wherein the magnet 32 ​​on the left is the first magnet 321, the magnet 32 ​​on the right is the second magnet 322, the coil 34 close to the first position is the first coil 341, and the coil 34 close to the second position is the second coil 342. In the figure, the S pole of the first magnet 321 faces the S pole of the second magnet 322.

[0082] When the second current is applied, the magnetic pole at one end adjacent to the first coil 341 and the second coil 342 is an S pole, the magnetic pole at the other end of the first coil 341 is an N pole, and the magnetic pole at the other end of the second coil 342 is an S pole. After the yoke 35 is magnetized, the magnetic pole on the side facing the first coil 341 and the second coil 342 is an N pole, and a repulsive force is generated between the yoke 35 and the first coil 341, and a magnetic attraction force is generated between the yoke 35 and the second coil 342, thereby driving the moving iron core 33 away from the first coil 341, that is, the moving iron core 33 moves to the second position;

[0083] When the first current is applied, the magnetic pole at one end adjacent to the first coil 341 and the second coil 341 is the N pole, the magnetic pole at the other end of the first coil 341 is the S pole, and the magnetic pole at the other end of the second coil 342 is the N pole. After the yoke 35 is magnetized, the magnetic property on the side facing the first coil 341 and the second coil 342 is the N pole, and a magnetic attraction force is generated between the yoke 35 and the first coil 341, and a repulsive force is generated between the yoke 35 and the second coil 342, thereby driving the moving iron core 33 to approach the first coil 341, that is, the moving iron core 33 moves to the first position.

[0084] When the electromagnetic operating system 3 drives more than one contact unit 2, the mobile component can be directly driven and connected to one of the contact units 2, and the remaining contact units 2 are connected through linkage, so that the electromagnetic operating system 3 drives at least two contact units 2 to open and close synchronously; or, a linkage plate 4 is connected to one end of the mobile component, and multiple contact units 2 are respectively linked to the linkage plate 4, and all contact units 2 are driven by the same linkage plate 4, which is beneficial to ensure the synchronization of the action of the contact units 2.

[0085] In this embodiment, each contact unit 2 includes a pair of wiring assemblies 24 spaced apart in the third direction, a contact mechanism is arranged between the pair of wiring assemblies 24, the contact mechanism includes a moving contact assembly 220 and two static contacts, the moving contact assembly 220 includes a contact support and a moving contact bridge, wherein the moving contact bridge is arranged on the contact support, and the moving trajectory of the moving contact bridge is perpendicular to the connecting line between the pair of connecting line assemblies 24, that is, the central axis of the moving contact bridge is parallel to the third direction, and two moving contact parts are respectively provided at both ends of the moving contact bridge. The moving contact assembly 220 moves along the first direction under the drive of the moving assembly, so that each moving contact part is respectively matched with the static contact part of a static contact, and each static contact is respectively electrically connected to an adjacent wiring assembly 24.

[0086] Each contact unit 2 further includes a current detection device, which is connected to a control circuit board 6 disposed in the housing 1, wherein the control circuit board 6 and the contact unit 2 are disposed along a first direction, and in a third direction, the current detection device is disposed between a static contact and an adjacent wiring assembly 24, and the current detection device is connected to an adjacent static contact or a moving contact assembly 220 in a closed position, and the current detection device is connected to the control circuit board 6 through a connecting circuit board 63, and the plane where the connecting circuit board 63 is located is parallel to the first direction and the third direction. In this embodiment, the control circuit board 6 and the contact unit 2 are no longer stacked, and the current detection device is directly connected to an adjacent static contact or a moving contact assembly 220 in a closed position, and the connecting circuit board 63 does not need to penetrate the contact unit 2 to connect with the control circuit board 6, which simplifies the wiring method of the current detection device, the control circuit board 6 and each contact unit 2, has less interference with the internal structure of the contact unit 2, and is easy to form a modular structure, which is conducive to reducing the difficulty of assembly.

[0087] Preferably, each contact unit 2 also includes a shell 21, wherein the contact mechanism is arranged in the shell 21, and each wiring assembly 24 is correspondingly arranged outside one end of the shell 21, and the moving contact assembly 220 of the contact mechanism and the static contact adopt a bridge structure, and the contact mechanism and the wiring assembly 24 are respectively arranged in the shell 21 and outside the shell 21, thereby ensuring that the contact mechanism forms a modular structure, which is convenient for assembly and avoids opening an operating hole for operating the wiring assembly 24 in the shell 21, which is beneficial to ensure that the contact mechanism is in a relatively closed environment and reduce the interference of the external environment on the contact mechanism.

[0088] Specifically, the two static contacts are arranged side by side in the middle of the shell 21. When the switch is opened, the connection line between each moving contact part and a static contact part is parallel to the first direction, that is, the connection line between each moving contact part and each static contact part is perpendicular to the connection line between a pair of wiring components 24. This is beneficial to reducing the space occupied by the contact mechanism and helps to reduce the volume of the entire contact unit 2. Furthermore, an isolation groove is also provided in the shell 21 between the two static contacts, and an isolation plate is provided on the contact support. When the switch is closed, the isolation plate can be correspondingly plugged into the isolation groove to block the two static contacts, thereby ensuring the safe use of the product.

[0089] Each contact unit 2 also includes two arc extinguishing systems, which are respectively arranged on both sides of the contact mechanism. In the third direction, each arc extinguishing system is located between the contact mechanism and a wiring assembly 24. Each arc extinguishing system includes an arc extinguishing chamber, the arc entry end of the arc extinguishing chamber is opposite to the contact mechanism, and the exhaust end of the arc extinguishing chamber is toward the wiring assembly 24, that is, the exhaust end of the arc extinguishing chamber is located on the side away from the contact mechanism, and an exhaust port is provided in the shell 21 area close to the exhaust end of the arc extinguishing chamber, and the exhaust port is correspondingly connected to the exhaust end of the arc extinguishing chamber. The arc extinguishing chamber includes a plurality of arc extinguishing grids arranged at intervals, and an arc extinguishing gap is formed between two adjacent arc extinguishing grids. The plurality of arc extinguishing gaps are arranged at intervals in the first direction, and the two ends of the arc extinguishing gap are respectively connected to the arc entry end and the exhaust end of the arc extinguishing chamber, and the end of the moving contact bridge is connected to a moving arc-striking plate, and each static contact is connected to a static arc-striking plate. The moving arc-striking plate and the static arc-striking plate are respectively connected to the arc entry end of the arc extinguishing chamber, which is beneficial for the arc to be introduced into the arc extinguishing chamber when the contact mechanism is opened.

[0090] In addition, each arc extinguishing system also includes a magnetizing component, each magnetizing component includes two magnetic conductive plates 232, and the two magnetic conductive plates 232 are spaced apart to form an arc striking space. In the present embodiment, the magnetic conductive plates 232 are spaced apart and relative to each other in the second direction, and each arc extinguishing chamber and the dynamic contact part and the static contact part adjacent to the arc extinguishing chamber are located in the arc striking space. A permanent magnet is arranged at one end of the arc striking space, and the permanent magnet forms an arc striking magnetic field in the arc striking space, which is beneficial to introducing the arc into the arc extinguishing chamber.

[0091] The current detection device, the connecting circuit board 63 and the control circuit board 6 of each contact unit 2 are all located outside the housing 21, so that each contact unit 2 forms a modular structure, and avoids the connecting circuit board 63 being set through (set along the second direction) to interfere with the interior of the contact unit 2; the current detection device can be a manganese copper shunt 52, preferably, the manganese copper shunt 52 is connected to the conductive plate 2231 of one of the static contacts, and the signal end of the manganese copper shunt 52 is connected to the connecting circuit board 63, or the current detection device is a Hall element, the collection end of the Hall element is connected to a static contact, and the Hall element is connected to a transmission circuit board 511, and the transmission circuit board 511 is connected to the connecting circuit board 63 for signal transmission. Of course, the manganese copper shunt 52 and the collection end of the Hall element can be connected to the moving contact assembly 220 in the closed position, that is, connected to the moving contact bridge in the closed position.

[0092] like Figure 3-5 As shown, the contact unit 2 includes a housing 21 and a pair of wiring assemblies 24. Figure 5 The middle shell 21 is a rectangular parallelepiped structure with one end closed and the other end open. The shell 21 includes a pair of support walls spaced apart in the second direction, a pair of connecting walls and a pair of end walls are connected between the pair of support walls, wherein the pair of connecting walls are spaced apart and opposite in the third direction, and the pair of end walls are spaced apart and opposite in the first direction, an opening is provided in the middle of one of the end walls, in the first direction, the electromagnetic operating system 3 is arranged outside the opening, two strip-shaped linkage grooves 211 are respectively provided on the edges of the support walls on both sides of the opening, the central axis of the linkage groove 211 is parallel to the first direction, a threading hole is provided on each connecting wall, a pair of wiring assemblies 24 are spaced apart in the third direction, and each wiring assembly 24 is arranged outside the shell 21. In the present embodiment, each wiring assembly 24 includes a wiring frame and a wiring screw arranged on the wiring frame, wherein the wiring frame corresponds to the threading hole, each wiring assembly 24 is arranged at the end of each assembly cavity, and each wiring assembly 24 is located in the wiring cavity in the wiring terminal of the housing 1.

[0093] The contact mechanism is correspondingly arranged in the shell 21 in the opening, and the contact mechanism includes a moving contact assembly 220 and two stationary contacts, wherein the moving contact assembly 220 includes a contact support and a moving contact bridge, wherein the middle part of the contact support is provided with an assembly groove, and the assembly groove is penetrated along the third direction, and the moving contact bridge is limitedly assembled in the assembly groove and the two ends of the moving contact bridge extend out of the assembly groove, and the two end portions of the moving contact bridge are bent and extended in the direction away from the stationary contacts to form a moving arc-striking plate, and the two stationary contacts are arranged side by side in the middle part of the shell 21, and each stationary contact is connected to a stationary arc-striking plate, and each stationary arc-striking plate is arranged along a direction away from the moving contact assembly 220 The contact support extends in the direction of rotation, and the contact mechanism forms a symmetrical structure about the central axis of the opening; at least one linkage shaft 2211 is provided on the side of the contact support away from the static contact, and the linkage shaft 2211 extends along the second direction. There are two linkage shafts 2211 in the figure, and each linkage shaft 2211 corresponds to a linkage groove 211. Two adjacent contact supports are connected in linkage through the linkage shaft 2211. In addition, an axial hole can be provided on the contact support, and the linkage shaft 2211 is inserted in the axial hole. Multiple contact supports can share one linkage shaft 2211, thereby realizing the linkage connection of multiple contact supports.

[0094] In this embodiment, the static contact includes a conductive plate 2231, which is arranged along the side of the shell 21. A static contact portion is provided at the first end of the conductive plate 2231 and is spaced opposite to the moving contact portion. The static contact portion and the moving contact portion are spaced opposite to each other in a first direction. A static arc-starting plate is connected to the first end of the conductive plate 2231. The second end of the conductive plate 2231 extends along a third direction and extends from a threading hole provided in the shell 21 to be connected to a wiring assembly 24. The conductive plate 2231 of the static contact directly extends to the outside of the shell 21 and is connected to the wiring assembly 24, which simplifies the wiring between the wiring assembly 24 and the contact mechanism and has the advantage of convenient operation.

[0095] Preferably, the static arc-striking plate is arranged in parallel with the conductive plate 2231, and a magnetic conductive plate can be arranged between the static arc-striking plate and the conductive plate 2231 to shield the influence of the magnetic field generated by the current of the conductive plate 2231 on the arc movement of the static arc-striking plate.

[0096] Two arc extinguishing systems are respectively arranged on opposite sides of the contact mechanism, each arc extinguishing system includes an arc extinguishing chamber, the arc entry end of the arc extinguishing chamber faces the contact mechanism, the moving arc striking plate extends to one side of the arc entry end of the arc extinguishing chamber, one end of the static arc striking plate is spaced opposite to the moving arc striking plate in the first direction and extends into the arc extinguishing chamber, the exhaust end of the arc extinguishing chamber faces the wiring assembly 24, that is, the exhaust end of the arc extinguishing chamber is located on the side away from the contact mechanism, and a plurality of arc extinguishing grids arranged at intervals are arranged between the arc entry end and the exhaust end of the arc extinguishing chamber. In this embodiment, the exhaust port is opened on a pair of supporting walls of the housing 21, and a plurality of arc extinguishing grids in the same arc extinguishing chamber are spaced along the first direction, and an arc extinguishing gap for cutting the arc is formed between two adjacent arc extinguishing grids, and the conductive plate 2231 of the static contact is arranged along the gap between the arc extinguishing chamber and the housing 21, which can make full use of the space in the housing 21 and improve the space utilization rate. It should be noted that the contact mechanism and arc extinguishing system of each contact unit 2 can adopt the existing technology.

[0097] In addition, if Figure 1 As shown, the housing 21 is also provided with a baffle 216, which shields the area of ​​the exhaust port close to the arc extinguishing chamber. If other components are provided outside the housing 21, the exhaust gas can be prevented from interfering with it. At the same time, the plate surface of the baffle 216 facing the exhaust channel can further rebound the gas and turn the gas, which is beneficial to further buffering and cooling the gas. Of course, the baffle 216 can also be formed by the housing 1, or formed by a partition.

[0098] Each arc extinguishing system also includes a magnetizing component, wherein the magnetizing component includes a permanent magnet and two magnetic conductive plates 232, and the two magnetic conductive plates 232 are spaced apart to form an arc striking space, that is, the two magnetic conductive plates 232 are spaced apart and opposite to each other in the second direction. In the present embodiment, each arc extinguishing chamber, the moving contact part and the static contact part are all located in the arc striking space, and a permanent magnet is arranged at one end of the arc striking space, and an arc striking magnetic field is formed in the arc striking space by the permanent magnet. The magnetic poles of the two permanent magnets are in opposite directions, which is conducive to introducing the arc into the arc extinguishing chamber.

[0099] In addition, the magnetic conductive plate 232 can be disposed inside the housing 21 or outside the housing 21. Figure 3-5 In the figure, a magnetic plate mounting groove 218 for assembling a magnetic plate 232 is provided on the shell 1 of the shell 21, that is, a magnetic plate mounting groove 218 is opened on the outer surface of each supporting wall, and the area of ​​the magnetic plate mounting groove 218 corresponds to the area covering the arc extinguishing chamber, the dynamic contact part and the static contact part. Each magnetic plate 232 is fitted on the outer wall of the shell 21, and a permanent magnet is provided at one end of each magnetic plate mounting groove 218. In the figure, a permanent magnet is provided above the magnetic plate mounting groove 218, wherein the permanent magnet passes through the shell 21 and extends to the top of the arc extinguishing chamber.

[0100] Each contact unit 2 also includes a current detection device, which can adopt existing technology. In the third direction, the current detection device is correspondingly arranged between a static contact and an adjacent wiring assembly 24. The current detection device is connected to the main circuit of each contact unit 2. A connecting circuit board 63 is connected between the control circuit board 6 and the current detection device. The connecting circuit board 63 transmits signals and is used to feed back the collected current signal to the control circuit board 6. The plane where the connecting circuit board 63 is located is parallel to the first direction and the third direction at the same time. The current detection device is directly connected to the adjacent static contact or the moving contact assembly 220 in the closed position. The connecting circuit board 63 does not need to pass through the contact unit 2 to connect with the control circuit board 6, which simplifies the wiring method between the current detection device and the control circuit board 6 and each contact unit 2, has less interference with the internal structure of the contact unit 2, is easy to form a modular structure, and helps to reduce the difficulty of assembly.

[0101] In this embodiment, if Figure 3-5 As shown, the connecting circuit board 63 connected between the control circuit board 6 and the current detection device is arranged along the outside of the shell 21, and the plane where the connecting circuit board 63 is located is parallel to the first direction and the third direction at the same time. It can also be understood that, in the second direction, the connecting circuit board 63 is stacked and arranged on the outside of a supporting wall of the shell 21, and in the third direction, the connecting circuit board 63 is located between the contact mechanism and a wiring assembly 24. In this way, the connecting circuit board 63 is prevented from passing through the contact unit 2 along the second direction, thereby ensuring the independence of the wiring unit, facilitating the formation of a modular structure, and facilitating assembly.

[0102] Specific as Figure 3 , 5 As shown, the connecting circuit board 63 is a strip-shaped plate structure as a whole. The connecting circuit board 63 is located between the magnetic conductive plate mounting groove 218 and a wiring assembly 24, and the connecting circuit board 63 partially overlaps with the exhaust port opened in the shell 21. The shell 21 is provided with a baffle 216 for shielding part of the exhaust port. In the second direction, the baffle 216 is stacked between the connecting circuit board 63 and the exhaust port, so as to prevent the exhaust gas discharged by the arc extinguishing system from interfering with the connecting circuit board 63. Figure 3 , 5 In the first direction, the length of the connecting circuit board 63 is slightly greater than the length of the supporting wall, so that one end of the connecting circuit board 63 is connected to the control circuit board 6, and the other end of the connecting circuit board 63 can be connected to the current detection device. At this time, the current detection device can extend from an end wall of the shell 21, and a signal port 60 can be set on the control circuit board 6, and a socket is opened in the area of ​​the shell 1 corresponding to the signal port 60.

[0103] Of course, if Figure 4As shown, in the third direction, the connecting circuit board 63 can also be correspondingly located between a pair of wiring components 24, that is, in the second direction, the connecting circuit board 63 and the contact mechanism are stacked, and the connecting circuit board 63 is located outside the shell 21 and between the two magnetic conductive plate mounting grooves 218 (magnetic conductive plates 232), one end of the connecting circuit board 63 extends along the first direction to be connected to the control circuit board 6, and the edges on both sides of the other end of the connecting circuit board 63 extend along the third direction toward the wiring component 24 to form an extension plate, one of the extension plates can exceed a connecting wall of the shell 21, and a signal port 60 can be arranged at the extension plate, and a socket is opened in the area of ​​the shell 1 opposite to the signal port 60, at this time, the signal port 60 and the socket are correspondingly located at the wiring terminal of the shell 1, and the other extension plate can be connected to the current detection device in the conductive plate 2231 area corresponding to the static contact.

[0104] Of course, the connecting circuit board 63 can also be set at other positions outside the shell 21. The assembly position of the connecting circuit board 63 is more flexible, which is convenient for connecting the control circuit board 6 and fully utilizes the space inside the shell 1. In particular, the connecting circuit board 63 is arranged along the outer side of the shell 21 of the contact unit 2, avoiding interference of the contact unit 2 with the connecting circuit board 63.

[0105] It should be noted that in the description of the present invention, the terms "upper", "lower", "left", "right", "inner", "outer", etc. indicate directions or positional relationships based on directions or positional relationships shown in the accompanying drawings, or directions or positional relationships that are usually placed when in use, and are only for the convenience of description, rather than indicating that the device or element referred to must have a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish descriptions, and cannot be understood as indicating relative importance.

[0106] The above contents are further detailed descriptions of the present invention in combination with specific preferred embodiments, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.

Claims

1. A switch device, comprising a housing (1), wherein an electromagnetic operating system (3) and at least one contact unit (2) are arranged in the housing (1) along a first direction, wherein the electromagnetic operating system (3) comprises a coil assembly and a moving assembly, wherein the moving assembly is drivingly connected to a moving contact assembly (220) of at least one contact unit (2), and wherein: A control circuit board (6) is also provided in the housing (1), and the control circuit board (6) is arranged side by side with the electromagnetic operating system (3) in the second direction or the third direction. The coil assembly is connected to the control circuit board (6) and is used to drive the moving assembly to move between the first position and the second position so as to drive the moving contact assembly (220) to move along the first direction. The first direction, the second direction and the third direction are perpendicular to each other.

2. The switch device according to claim 1, characterized in that: The control circuit board (6) is divided into at least two sub-circuit boards (61); in the third direction, at least two sub-circuit boards (61) are respectively located on two opposite sides of the electromagnetic operating system (3); or all sub-circuit boards (61) are located on the same side of the electromagnetic operating system (3).

3. The switch device according to claim 2, characterized in that: It comprises a control circuit board (6) and at least two contact units (2), wherein two adjacent contact units (2) are arranged side by side in a second direction, and the control circuit board (6) spans one or two contact units (2) along the second direction.

4. The switch device according to claim 3, characterized in that: The control circuit board (6) is divided into two sub-circuit boards (61). In the third direction, the two sub-circuit boards (61) are respectively located on two sides of the electromagnetic operating system (3).

5. The switch device according to claim 3, characterized in that: The control circuit board (6) is divided into two sub-circuit boards (61); in the third direction, the two sub-circuit boards (61) are arranged on the same side of the electromagnetic operating system (3), and the two sub-circuit boards (61) are connected at an angle.

6. The switch device according to claim 2, characterized in that: The invention comprises a control circuit board (6) and a contact unit (2), wherein the control circuit board (6) is divided into two sub-circuit boards (61), and in a third direction, the two sub-circuit boards (61) are located on both sides of an electromagnetic operating system (3), and the plane where each sub-circuit board (61) is located is parallel to both the first direction and the third direction.

7. The switch device according to any one of claims 1 to 6, characterized in that: Each contact unit (2) also includes a pair of wiring components (24) arranged at intervals along a third direction, and the contact mechanism of each contact unit (2) is arranged between the pair of wiring components (24).

8. The switch device according to claim 7, characterized in that: The contact unit also includes a current detection device, which is connected to the main circuit of each contact unit (2) and feeds back a current signal to the control circuit board (6).

9. The switch device according to claim 8, characterized in that: The control circuit board (6) is also connected to a connecting circuit board (63), and the plane where the connecting circuit board (63) is located is parallel to both the first direction and the third direction.

10. The switch device according to claim 9, characterized in that: In the third direction, the connection circuit board (63) is located between the contact mechanism and a wiring assembly (24), or the connection circuit board (63) is located between a pair of wiring assemblies (24) and is stacked with the contact mechanism in the second direction.

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