Change-over switch

Abstract

A change-over switch comprises a shell, a driving system and conductive systems, each conductive system comprises two sets of contact mechanisms, a wire inlet assembly and a wire outlet assembly, the two sets of contact mechanisms are arranged in a spaced mode in the first direction, and each set of contact mechanism is connected between the wire inlet assembly and the wire outlet assembly in the second direction. Each group of contact mechanism comprises a moving contact assembly and a static contact assembly which are opposite to each other at an interval in a first direction, a rotating shaft is rotatably arranged between the two groups of contact mechanisms, the central axis of the rotating shaft is parallel to a third direction, and the driving system and the conductive system are stacked in the third direction and are in driving connection with the rotating shaft of at least one conductive system. The rotating shaft is rotated, and the rotating shaft is matched with the driving assembly, so that one group of contact mechanism is firstly switched off in place, and then the other group of contact mechanism is switched on in place. According to the invention, the driving system and the conductive system are stacked, and the same rotating shaft is used for driving the two groups of contact mechanisms, thereby simplifying the composition and cooperation of internal parts, and facilitating the reduction of the overall size.

Description

Technical Field

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

[0002] The transfer switch realizes the conversion of the load line between two power sources and is widely used in various places with uninterruptible power supply to ensure power supply reliability.

[0003] In existing products, transfer switches typically switch between the primary and backup power sources by switching the open and closed states of two sets of contact mechanisms. The two sets of contact mechanisms are linked via two rotating shafts. This structure has the following drawbacks: First, the two rotating shafts are linked via an interlocking assembly. The two rotating shafts and the interlocking mechanism require a large operating space and are cumbersome to coordinate, affecting the layout of various components in the conductive system and hindering miniaturization. Second, when the two rotating shafts are not equipped with an interlocking assembly, the two rotating shafts need to be properly coordinated with the drive system, which places high demands on the assembly position and composition of the drive system, easily resulting in an excessively large overall volume and affecting drive stability. Third, the open and closed states of the two sets of contact mechanisms are switched almost simultaneously, which is not conducive to meeting the power supply switching requirements of the primary and backup power sources. Fourth, the coordination between the conductive system and the drive system occupies a large space. Fifth, existing circuit breakers or disconnectors are usually arranged on both sides of the transfer switch. Due to the structure and location of existing transfer switches, circuit breakers, and disconnectors, their wiring is cumbersome, the overall volume is large, and the cost is high. Summary of the Invention

[0004] The object of the present invention is to overcome at least one drawback of the prior art and provide a transfer switch.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] The present invention provides a transfer switch, comprising a housing, wherein a drive system and at least one conductive system are disposed within the housing, wherein each conductive system comprises two groups of contact mechanisms, at least two incoming line assemblies, and at least one outgoing line assembly, wherein the two groups of contact mechanisms are spaced apart in a first direction, and each group of contact mechanisms is connected between an incoming line assembly and an outgoing line assembly in a second direction, and each group of contact mechanisms comprises a movable contact assembly and a stationary contact group spaced apart from each other in the first direction, a rotating shaft is rotatably disposed between the two groups of contact mechanisms, and a central axis of the rotating shaft is parallel to a third direction, and the drive system and the conductive system are stacked in the third direction and are drivingly connected to the rotating shaft of at least one conductive system.

[0007] The moving contact assembly is connected to a driving assembly, and the rotating shaft is rotated, and the rotating shaft cooperates with the driving assembly to make one group of contact mechanisms open first and then close the other group of contact mechanisms. The first direction, the second direction and the third direction are perpendicular to each other.

[0008] Preferably, in the third direction, the total width of the driving system and an adjacent conductive system is a module width.

[0009] Preferably, in the third direction, each conductive system has a module width, and the driving system has a module width.

[0010] Preferably, it includes two incoming line assemblies and two outgoing line assemblies. In the second direction, the spacing between one incoming line assembly and one outgoing line assembly is smaller than the spacing between another incoming line assembly and another outgoing line assembly, and all the incoming line assemblies are located on the same side of the two contact mechanisms, and the two outgoing line assemblies are located on the other side of the two contact mechanisms.

[0011] Preferably, it comprises two incoming line assemblies and one outgoing line assembly, the two groups of contact mechanisms are respectively connected to the two incoming line assemblies, and the two groups of contact mechanisms are connected to the same outgoing line assembly.

[0012] Preferably, a middle portion of one side of the housing protrudes outward along a first direction to form a protruding portion, and at least one incoming line assembly is arranged inside the protruding portion.

[0013] Preferably, the housing is provided with a wiring port corresponding to the wiring assembly, and a detection device is provided on the housing on one side of the wiring port, and the detection device is connected to a power taking part connected to the wiring assembly to take power.

[0014] Preferably, the housing is provided with an indication window, the indication window corresponds to the driving system, the driving system includes an indication gear, and the indication gear is provided with an indication portion that cooperates with the indication window.

[0015] Preferably, the drive system includes a control circuit board, a motor and a gear set meshing with the motor, the control circuit board and the gear set are stacked in a third direction, the motor is connected to the control circuit board, and the output shaft of the gear set is drive-connected to the rotating shaft.

[0016] Preferably, the driving assembly includes a linkage member and a reset member, both ends of the linkage member are respectively hinged between the rotating shaft and the moving contact assembly, the reset member is connected to a side of the moving contact assembly away from the linkage member, and the reset member undergoes elastic deformation along the first direction.

[0017] Preferably, the rotating shaft includes an integrated rotating shaft body, and the hinge points of the two linkage parts on the rotating shaft are not colinear with the axis of the rotating shaft body; or, the rotating shaft includes a driving shaft and two rotating disks, the central axis of the driving shaft is parallel to the third direction, the two rotating disks are coaxial and linked to the driving shaft, each of the rotating disks is driven by the driving shaft, and each rotating disk is hinged to a linkage part.

[0018] Preferably, an arcuate groove is provided on the end face of each rotating disk, and the arcuate groove is cocentric with the rotating disk. The two arcuate grooves are located on opposite sides of the driving part along the axial direction of the driving shaft. A closing part and an opening part are respectively provided at both ends of each arcuate groove. The closing part protrudes from the end face of the rotating disk along the axial direction of the rotating disk. Each closing part cooperates with the driving part and the opening part of another rotating disk, and each closing part is inserted into another arcuate groove. The two closing parts are respectively located on opposite sides of the driving part in the circumferential direction.

[0019] Preferably, each closing part abuts against the opening part of another rotating disk, and the driving part abuts against one of the closing parts and is spaced apart from and opposite to the other closing part.

[0020] Preferably, the rotating shaft is provided with a connecting portion protruding radially outward along the rotating shaft, and a linkage hole for a hinged linkage member is opened on the connecting portion. A limiting portion is provided in the outer shell, and the limiting portion is arranged around one side of the rotating shaft, and the connecting portion and the limiting portion are blocked to limit the rotation range of the rotating shaft.

[0021] Preferably, the moving contact assembly includes a contact support and a moving contact bridge, a mounting groove is provided in the middle of the contact support, the moving contact bridge is arranged in the mounting groove along the second direction, and both ends of the moving contact bridge extend out of the mounting groove as moving contact portions;

[0022] The static contact group includes two static contacts spaced apart in the second direction, each contact is provided with a static contact portion, and each static contact portion is spaced apart and opposite to a dynamic contact portion in the first direction.

[0023] The switching switch of the present invention has a stacked arrangement of the drive system and the conductive system and uses the same rotating shaft to drive two sets of contact mechanisms. Compared with existing products, the number of rotating shafts used is reduced, the composition and coordination of internal components are simplified, and the overall volume is reduced. The same rotating shaft is coordinated with the two sets of drive components, so that the opening of one set of contact mechanisms is achieved before the closing of the other set of contact mechanisms, which can meet the power input requirements of two sets and improve the safety of use.

[0024] In addition, the total width of the drive system and an adjacent conductive system is one module width, and the overall volume is small, meeting the requirements of miniaturization design.

[0025] In addition, the spacing between one pair of wiring assemblies is smaller than the spacing between another pair of wiring assemblies. In particular, the two groups of contact mechanisms share one output wire assembly, and at least one wiring assembly is arranged in the protrusion of the shell, which fully utilizes the internal space and helps to reduce the overall volume.

[0026] In addition, the detection device is arranged on the outside to avoid being arranged inside and occupying too much internal space.

[0027] In addition, a separate indicator is no longer required, and a gear in the drive system is used as an indicator gear for indication, which has the advantages of high accuracy and small space occupation. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural diagram of the transfer switch of the present invention;

[0029] Figure 2 This is a schematic diagram of the structure of the transfer switch of the present invention after the detection device is removed;

[0030] Figure 3 It is a schematic diagram of the internal structure of the drive system of the present invention;

[0031] Figure 4 This is a front view of the interior of the drive system of the present invention;

[0032] Figure 5 This is a schematic diagram of the structure of the gear set of the present invention after removing the indicator gear;

[0033] Figure 6 It is a schematic diagram of the structure inside the conductive system of the present invention;

[0034] Figure 7 This is a structural diagram of the first embodiment of the present invention when the shaft rotates to the second position.

[0035] Figure 8 yes Figure 7 Schematic diagram of the structure of the rotating shaft;

[0036] Figure 9 is a schematic structural diagram of the first embodiment of the present invention when the rotating shaft rotates to the first position;

[0037] Figure 10 yes Figure 9 Schematic diagram of the structure of the rotating shaft;

[0038] Figure 11 This is a schematic structural diagram of the first embodiment of the present invention when the rotating shaft rotates to the middle position;

[0039] Figure 12 yes Figure 11 Schematic diagram of the structure of the rotating shaft;

[0040] Figure 13 is an exploded schematic diagram of the rotating shaft in the first embodiment of the present invention;

[0041] Figure 14 Schematic diagram of the cooperation between the driving shaft and the rotating disk in the first embodiment of the present invention;

[0042] Figure 15 is a schematic diagram of the internal structure of the conductive system in the second embodiment of the present invention;

[0043] Figure 16 is a schematic structural diagram of a rotating shaft in a second embodiment of the present invention;

[0044] Reference numerals:

[0045] 1-housing, 10-protrusion, 11-limiting part, 12-indicator window, 13-connection port, 1a-operating wall, 1b-connection wall, 2-conductive system, 211-incoming assembly, 212-outgoing assembly, 213-power taking part, 22-rotating shaft, 22a-connecting part, 220-rotating shaft body, 221-driving shaft, 2211-driving part, 222-rotating disk, 2220-arc groove, 2221-closing part, 22 22- opening part, 231- linkage part, 232- reset part, 241- moving contact assembly, 2411- contact support, 2412- moving contact part, 242- static contact, 2421- static contact part, 3- drive system, 31- control circuit board, 32- gear set, 321- drive gear, 322- indication gear, 3221- indication part, 33- motor, 4- detection device, 41- connection circuit board, 42- cover. DETAILED DESCRIPTION

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

[0047] like Figure 1-6 As shown, the transfer switch includes a housing 1, in which a drive system 3 and at least one conductive system 2 are arranged. When two or more conductive systems 2 are arranged in the housing 1, two adjacent conductive systems 2 are arranged in a stacked manner; each conductive system 2 includes at least three wiring assemblies, two groups of contact mechanisms and a rotating shaft 22, and the wiring assemblies are divided into at least two incoming line assemblies 211 and at least one outgoing line assembly 212. The incoming line assemblies 211 and the outgoing line assemblies 212 are spaced apart and arranged at opposite ends of the housing 1. Each wiring assembly is corresponding to the wiring port 13 opened on the housing 1 for connection to an external power supply, and each group of contact mechanisms is connected between an incoming line assembly 211 and an outgoing line assembly 212. That is, one group of contact mechanisms of the conductive system 2 is connected to a wiring assembly connected thereto and is connected to a normal power supply, and another group of contact mechanisms is connected to a backup power supply through a wiring assembly connected thereto.

[0048] Specifically, the two groups of contact mechanisms in each conductive system 2 are spaced apart from each other in the housing 1, and each group of contact mechanisms is connected between an incoming line component 211 and an outgoing line component 212. The rotating shaft 22 is arranged between the two groups of contact mechanisms. The drive system 3 drives the two contact mechanisms in each conductive system 2 through the rotating shaft 22, so that the opening and closing of one pair of contact mechanisms is used to control the disconnection and connection of the normal power supply, and the opening and closing of the other pair of contact mechanisms is used to control the disconnection and connection of the backup power supply, and the normal power supply and the backup power supply are not connected at the same time, that is, the two groups of contact mechanisms will not be closed at the same time; each group of contact mechanisms can adopt the existing technology, that is, each group of contact mechanisms includes a moving contact assembly 241 and a static contact group that are spaced apart from each other. Under the direct or indirect drive of the drive system 3, the moving contact assembly 241 of each group of contact mechanisms moves in a straight line and contacts or separates with the static contact group.

[0049] For the convenience of description, the moving direction of the moving contact assembly 241 is taken as the first direction, that is, Figure 1-6 The up and down direction in the figure is the first direction, the two sets of contact mechanisms are spaced apart in the first direction, the two directions perpendicular to the first direction are the second direction and the third direction, the incoming line assembly 211 and the outgoing line assembly 212 are spaced apart and opposite in the second direction, that is, Figure 1-6 The left and right directions in the figure are the second directions, and the third direction is perpendicular to both the first and second directions. Figure 1-6 In the drawing, the third direction is a direction perpendicular to the paper surface, and two adjacent conductive systems 2 are stacked in the third direction.

[0050] like Figure 6 As shown, the improvement of the present application is that a rotating shaft 22 is rotatably arranged between the two groups of contact mechanisms, the central axis of the rotating shaft 22 is parallel to the third direction, the driving system 3 and the conductive system 2 are stacked in the third direction and are driven and connected to the rotating shaft 22 of at least one conductive system 2, the moving contact assembly 241 is connected to the driving assembly, and the rotating shaft 22 is rotated, and the rotating shaft 22 cooperates with the driving assembly to make one group of contact mechanisms open first and then close the other group of contact mechanisms. The first direction, the second direction and the third direction are perpendicular to each other.

[0051] In this way, the stacking arrangement of the drive system 3 and the conductive system 2 and the use of the same rotating shaft 22 to drive two sets of contact mechanisms reduce the number of rotating shafts 22 used compared to existing products, simplify the composition and coordination of internal components, and help reduce the overall volume. The same rotating shaft 22 cooperates with the two sets of drive components, so that one set of contact mechanisms can be opened before the other set of contact mechanisms are closed, which can meet the power input requirements of two sets and improve the safety and reliability of use.

[0052] Furthermore, in the third direction, the total width of the drive system 3 and an adjacent conductive system 2 is one modular width, so that the overall volume of the transfer switch can be smaller and can meet the requirements of miniaturization design. Specifically, when the number of conductive systems 2 is one, the conductive system 2 and the drive system 3 are jointly arranged in the housing 1, and the overall width of the housing 1 is one modular width. When the number of conductive systems 2 is two or more, the housing 1 is preferably composed of two or more unit shells stacked in the third direction, and the width of each unit shell is one modular width, and one conductive system 2 and the drive system 3 are arranged in the same unit shell, together occupying one modular width. Of course, it is also possible that the width of each conductive system 2 is one modular width and the width of the drive system 3 is also one modular width. As another inferior embodiment, the conductive system 2 and the drive system 3 can be greater than or equal to one modular width, that is, in actual application, the width can be adjusted according to the drive system 3. A modular width in this application is 18mm.

[0053] Combine Figure 1-14 A first embodiment of a transfer switch is provided.

[0054] like Figure 1-6 As shown, the transfer switch includes a housing 1, in which a drive system 3 and at least one conductive system 2 are arranged. The drive system 3 and the conductive system 2 are stacked in a third direction. Preferably, the total width of the drive system 3 and an adjacent conductive system 2 is a modular width, which is conducive to reducing the overall volume.

[0055] like Figure 1-6 As shown, the middle part of one side of the shell 1 protrudes outward along the first direction to form a protrusion 10, so that the shell 1 as a whole presents a "convex" shape structure. When the number of conductive systems 2 is two or more, a partition can be set inside the shell 1 to separate two adjacent conductive systems 2 or separate the drive system 3 from the adjacent conductive system 2. Alternatively, the shell 1 includes two or more unit shells of the same shape, each unit shell is provided with at least one conductive system 2, and one unit shell can be provided with a drive system 3 and a conductive system 2 at the same time. The total width of the drive system 3 and one conductive system 2 is a modular width. Of course, the drive system 3 can also be provided separately in a unit shell. The width of the unit shell is preferably a modular width, but the width of the drive system 3 is not limited to a modular width, and can also be greater than a modular width. It can be adjusted according to actual needs.

[0056] The housing 1 includes a pair of support walls spaced apart in the third direction, and a wiring wall 1b, an operating wall 1a and a connecting wall perpendicular to the support wall surface are connected between the pair of support walls, wherein the wiring walls 1b are arranged in pairs and spaced opposite to each other in the second direction, the operating wall 1a and the connecting wall are spaced apart in the first direction, the operating wall 1a is adjacent to the wiring wall 1b, and an operating hole is provided on the operating wall 1a, and a wiring port 13 is provided on the wiring wall 1b, each wiring assembly corresponds to an operating hole and a wiring port 13 for matching wiring. In this embodiment, the housing 1 is provided with a protrusion 10, and its supporting wall is a "convex"-shaped plate as a whole. The connecting wall is located on the side of the connecting wall (housing 1) away from the protrusion 10. The side walls spaced opposite to the connecting wall in the first direction are all operating walls 1a, and the side walls spaced apart and arranged in pairs in the second direction are wiring walls 1b. In this embodiment, the operating wall 1a on the protrusion 10 is provided with an indicator window 12 connected to the interior.

[0057] like Figure 3-5 As shown, the drive system 3 includes a control circuit board 31, a motor 33, and a gear set 32, wherein the control circuit board 31 is stacked in the third direction within the housing 1. The motor 33 is connected to the control circuit board 31 and a controller on the control circuit board 31 outputs a control signal to drive the motor 33 to rotate. The output shaft of the motor 33 is meshed with the gear set 32. The gear set 32 ​​and the motor 33 are stacked on the same side panel of the control circuit board 31. The gear set 32 ​​includes multiple meshed gears, one of which serves as a drive gear 321. The output shaft of the drive gear 321 is used to drive the contact mechanism in the conductive system 2 to open and close. The drive system 3 can also adopt existing technology. In addition, when the number of conductive systems 2 is two or more, the drive system 3 is located between two adjacent conductive systems 2. Alternatively, all conductive systems 2 can be stacked with the drive system 3 in the third direction.

[0058] Further, such as Figure 3 、 4 As shown, the gear set 32 ​​also includes a gear serving as an indicator gear 322 , which is the final gear in the gear set 32 ​​, and the motor 33 and the indicator gear 322 are located on opposite sides of the housing 1 , to prevent the indicator gear 322 from affecting other gears in the gear set 32 ​​in realizing the transmission function.

[0059] In this embodiment, Figure 3 、 4In the embodiment, a section of gear teeth for meshing connection is provided on one side circumferential side wall of the indicator gear 322, that is, a section of gear teeth for meshing connection is provided on one side circumferential side wall of the indicator gear 322, and an indicating portion 3221 is provided on the other side circumferential side wall of the indicator gear 322. The central angle of the indicating portion 3221 is smaller than the central angle corresponding to the gear teeth portion, which can limit the rotation range of the indicating portion 3221 without interfering with the meshing connection between the indicating gear 322 and other gears in the gear set 32. An identifiable mark is provided on the indicating portion 3221, and the corresponding mark is exposed in the indicating window 12 to judge the state of the switching switch. The state of the switching switch is directly indicated by the driving system 3, and the accuracy is high.

[0060] like Figure 6 、 7 , 9 and 11, the conductive system 2 includes two incoming line components 211 and one outgoing line component 212, wherein one incoming line component 211 and one outgoing line component 212 are arranged at both ends of the housing 1 below the protrusion 10, and the other incoming line component 211 is arranged in the protrusion 10. In the first direction, the two incoming line components 211 are spaced apart; of course, the conductive system 2 can also be provided with two incoming line components 211 and two outgoing line components 212, wherein one incoming line component 211 and one outgoing line component 212 are spaced apart in the second direction and correspondingly assembled in the protrusion 10, and the other incoming line component 211 and the outgoing line component 212 are spaced apart in the second direction from both ends of the housing 1, so that the distance between the two is greater than the incoming line component located in the protrusion 10 The spacing between 211 and the outgoing line components 212 can also be understood as that each pair of wiring components is arranged at intervals, wherein the spacing between a pair of wiring components is smaller than the spacing between another pair of wiring components. In the figure, a pair of wiring components is arranged in the protrusion 10, and the other pair of wiring components is arranged at both ends of the housing 1 near the connecting wall. Each pair of wiring components includes an incoming line component 211 and an outgoing line component 212. In this embodiment, all incoming line components 211 are arranged on the same side of the housing 1, and the outgoing line component 212 is arranged on the other side of the housing 1. The two incoming line components 211 in the same conductive system 2 are staggered in the first direction, and the two outgoing line components 212 can also be staggered in the first direction. The two outgoing line components 212 need to be connected in parallel on the outside; further, as Figure 6 、 7 , 9 and 11, in the same conductive system 2, one outgoing wire assembly 212 can be omitted, that is, only one incoming wire assembly 211 is provided inside the protrusion 10, and no outgoing wire assembly 212 is provided. Two groups of contact mechanisms share one outgoing wire assembly 212, and the structure of each wiring assembly can adopt existing technology.

[0061] In this embodiment, each wiring assembly includes a wiring frame, a wiring screw and a conductive plate, wherein the wiring frame corresponds to the wiring port 13 and is used for external wires to extend into, the wiring screw is connected to the wiring frame and the wiring screw corresponds to the operating hole, one end of the conductive plate is connected to the wiring frame, and the other end serves as the power-taking part 213 and extends out of the housing 1 from one side of the wiring port 13. In this embodiment, the other end of the conductive plate extends along the side corresponding to the wiring wall 1b, and a through-hole is provided on the wiring wall 1b for the power-taking part 213 to extend out, and the through-hole is located on one side of the wiring port 13. In this embodiment, in the first direction, the through-hole is located above the wiring port 13.

[0062] Only one incoming component in each pair of wiring components is provided with a power taking portion 213. In this embodiment, only the incoming component 211 is provided with a power taking portion 213, and the outgoing component 212 is no longer provided with a power taking portion 213. The outgoing component 212 can directly adopt the existing technology. Figure 2 、 7 In , 9 and 11 , the two incoming line components 211 in each conductive system 2 are connected to a power taking portion 213 , and the power taking portion 213 extends out of the housing 1 from the same side, making it convenient to configure the detection device 4 .

[0063] In this embodiment, two sets of contact mechanisms are also provided in the conductive system 2, such as Figure 6 、 7 , 9 and 11, two groups of contact mechanisms are spaced apart in the first direction, and each group of contact mechanisms includes a movable contact assembly 241 and a static contact group spaced apart from each other in the first direction. The movable contact assembly 241 includes a contact support 2411 and a movable contact bridge. The middle of the contact support 2411 is provided with an assembly groove. The movable contact bridge is arranged in the assembly groove along the second direction. Both ends of the movable contact bridge serve as movable contact portions 2412 extending outside the assembly groove. The static contact group includes two static contacts 242 spaced apart in the second direction. Figure 6 、 7 As shown in Figures 9 and 11, each static contact 242 includes a static contact plate, one end of which is provided with a static contact portion 2421. Each static contact portion 2421 cooperates with a dynamic contact portion 2412, and the other end of the static contact plate is connected to an adjacent wiring assembly.

[0064] A rotating shaft 22 for driving two moving contact assemblies 241 is provided between the two groups of contact mechanisms. The rotating shaft 22 is driven and connected to the gear set 32 ​​in the drive system 3, that is, the output shaft of the driving gear 321 drives the rotating shaft 22 to rotate. Each group of contact mechanisms also includes a driving assembly, which rotates the rotating shaft 22, and the rotating shaft 22 drives the two groups of driving assemblies, so that one group of contact mechanisms is first opened and the other group of contact mechanisms is closed. That is, each group of driving assemblies switches between the equilibrium position and the dead point position. One group of driving assemblies rotates to the dead point position to drive the connected contact mechanism to close, and the other group of driving assemblies rotates to the equilibrium position to open the connected contact mechanism.

[0065] In this embodiment, if Figure 7-12 As shown, the rotating shaft 22 can switch between the first position, the middle position and the second position in sequence. For the convenience of description, the two groups of contact mechanisms are respectively the first contact mechanism and the second contact mechanism. When the rotating shaft 22 rotates to the first position, the first contact mechanism is in the closed position and the second contact mechanism is in the open position. When the rotating shaft 22 rotates to the middle position, the first contact mechanism and the moving contact assembly 241 in the second contact mechanism are in a separated state from the static contact group. When the rotating shaft 22 rotates to the second position, the first contact mechanism is in the open position and the second contact mechanism is in the closed position. Furthermore, when the rotating shaft 22 rotates to the middle position, it can stay for a period of time, and its stay time can be controlled by the drive system 3. That is, when the rotating shaft 22 rotates to the middle position, by controlling the start and stop of the motor 33, the time when the rotating shaft 22 stays in the middle position is controlled, thereby controlling the time interval between the switching of the two contact mechanisms into and out of the open and closed states.

[0066] In this embodiment, the rotating shaft 22 preferably adopts a split structure. The rotating shaft 22 includes a drive shaft 221 and two rotating disks 222. The central axis of the drive shaft 221 is parallel to the third direction. The rotating disks 222 are coaxially and linkedly connected on the drive shaft 221. Each rotating disk 222 is driven to rotate by the drive shaft 221. Each rotating disk 222 drives the moving contact assembly 241 to contact or separate with the corresponding static contact group through a group of drive components.

[0067] The rotation process is as follows: the rotating shaft 22 is rotated, one rotating disk 222 is rotated for closing, and the other rotating disk 222 is rotated for opening, and the closing movement of one set of drive components is driven by the connected rotating disk 222 and the driving shaft 221, and the opening movement of the other set of drive components is driven by the connected other rotating disk 222 and the rotating disk 222 for closing, so that one set of contact mechanisms is opened first and the other set of contact mechanisms is closed later. For ease of understanding, the two rotating disks 222 are respectively the first rotating disk and the second rotating disk, and the set of drive components connected to the first rotating disk is the first drive component. , a group of drive components connected to the second rotating disk is the second drive component, which rotates the shaft. When the first rotating disk rotates to close and the second rotating disk rotates to open, the closing movement of the first drive component is driven by the first rotating disk and the drive shaft 221, and the opening movement of the second drive component is driven by the second rotating disk and the first rotating disk rotating for closing; when the first rotating disk rotates to open and the second rotating disk rotates to close, the closing movement of the second drive component is driven by the second rotating disk and the drive shaft 221, and the opening movement of the first drive component is driven by the first rotating disk and the second rotating disk rotating for closing.

[0068] In this embodiment, each group of driving components includes a linkage 231, wherein the linkage 231 is a rod-shaped structure, and each linkage 231 is hinged between the moving contact assembly 241 and a rotating disk 222. At the dead point position, the two hinge points of the linkage 231 are collinear or tend to be collinear with the axis of the rotating disk 222. The linkage 231 and the rotating disk 222 can limit the moving contact assembly 241 so that the moving contact assembly 241 is closed in place. In the equilibrium position, the two hinge points of the linkage 231 are not collinear with the axis of the rotating disk 222. The linkage 231 and the rotating disk 222 can no longer limit the moving contact assembly 241, and the moving contact assembly 241 is driven to open until it is opened in place.

[0069] Preferably, each set of driving components further includes a reset member 232, which is connected to the moving contact assembly 241. The connection position thereof is adjusted according to actual needs. The reset member 232 and the linkage member 231 cooperate to drive the moving contact assembly 241. The reset member 232 is usually made of elastic material. The reset member 232 of this embodiment takes a spring as an example. One end of the reset member 232 is connected to the housing 1, and the other end is connected to the side of the moving contact assembly 241 away from the linkage member 231. The central axis of the reset member 232 is parallel to the first direction. When in the dead point position, the deformation direction of the reset member 232 is aligned with the two ends of the linkage member 231. The hinge points are collinear, and the reset member 232 cooperates with the linkage member 231 to close the moving contact assembly 241. When in the equilibrium position, the deformation direction of the reset member 232 is set at an angle to the central axis of the linkage member 232. It can also be understood that after passing the dead point position, the deformation direction of the linkage member 231 and the reset member 232 are set at an angle. At this time, the linkage member 231 will neither limit the rotation of the rotating disk 222 nor cooperate with the rotating disk 222 to limit the deformation of the reset member 232, so that the reset member 232 can cooperate to drive the moving contact assembly 241 to open until the moving contact assembly 241 is opened.

[0070] Combine Figure 6-14 A rotating shaft 22 structure applied to this embodiment is provided.

[0071] like Figure 13 As shown, the rotating shaft 22 includes a driving shaft 221 and two rotating disks 222, wherein the driving shaft 221 is cylindrical as a whole, and both ends of the driving shaft 221 are respectively provided with shaft holes for driving connection, and the shaft holes can be connected to the output shaft of the gear set 32, and a boss structure serving as a driving part 2211 is protruded on the circumferential side wall of the driving shaft 221.

[0072] like Figure 13 、 14As shown, the rotating disk 222 is a disk as a whole, and a central hole is provided in the middle of the end surface of each rotating disk 222, which passes through both sides. The rotating end of the driving shaft 221 rotates and passes through the central hole and can rotate around the axis in the central hole. The end surface of the rotating disk 222 is also provided with an arc groove 2220. In this embodiment, the side with a smaller diameter of the arc groove 2220 is connected to the central hole. The arc groove 2220 and the central groove are cocentric with the rotating disk 222. The two ends of each arc groove 2220 are respectively provided with a closing part 2221 and a closing part 2222, wherein the closing part 2221 protrudes from the end surface of the rotating disk 222 along the axial direction of the rotating disk 222; when the two rotating disks 222 are coaxially assembled on the driving shaft 221, the two The rotating disks 222 are located on both sides of the driving part 2211 along the axial direction of the driving shaft 221, and the closing part 2221 of one rotating disk 222 is inserted into the arc groove 2220 of the other rotating disk 222. Each closing part 2221 cooperates with the opening part 2222 of the other rotating disk 222. In the circumferential direction, the two closing parts 2221 are respectively located on both sides of the driving part 2211. The driving part 2211 can drive the rotating disk 222 to rotate in the closing direction by pushing the closing part 2221, thereby realizing the driving cooperation between each rotating disk 222 and the driving shaft 221. The closing rotation of the closing part 2221 can drive the opening part 2222 of the other rotating disk 222 to rotate in the opening direction.

[0073] When the driving shaft 221 rotates, the driving part 2211 drives a closing part 2221 to directly drive one rotating disk 222 to rotate. At the same time, the closing part 2221 cooperates with the opening part 2222 of the other rotating disk 222 to further drive the other rotating disk 222 to rotate.

[0074] Preferably, in this embodiment, the arc groove 2220 has a certain length, each closing part 2221 abuts against the opening part 2222 of another rotating disk 222, the driving part 2211 abuts against one of the closing parts 2221, and is spaced apart from the other closing part 2221. When the rotating disk 222 rotates to open, the reset part 232 drives the rotating disk 222 to rotate a distance relative to the driving part 2211. The distance is the interval between the driving part 2211 and the closing part 2221, so that the rotating disk 222 that rotates to open is rotated to the opening position first. It can also be understood that the interval between the driving part 2211 and the closing part 2221 is used to compensate for the stroke, thereby facilitating the extension of the time difference between the first opening contact mechanism and the subsequent closing contact mechanism, further meeting the power input requirements of the two groups, and improving the safety of use.

[0075] like Figure 6-14A connecting portion 22a is protruding from the circumferential side wall of each rotating disk 222. The connecting portion 22a is provided with a connecting hole for the hinged linkage 231. In this embodiment, the connecting portion 22a is located adjacent to the opening portion 2222. Furthermore, a limiting portion 11 is provided within the housing 1. The limiting portion 11 is a segment of an arc-shaped boss in the figure. The limiting portion 11 is disposed around the side of the rotating shaft 22 facing away from the connecting portion 22a. When the rotating shaft 22 is rotated, each connecting portion 22a can respectively engage with the limiting portion 11 to limit the rotation angle of the rotating shaft body 220, thereby preventing the rotating disk 222 from continuing to rotate after passing the dead point position, thereby locking it in the closed position.

[0076] It should be noted that, in this embodiment, the rotating shaft 22 may not be set at an intermediate position. By controlling the rotation speed of the rotating shaft 22, the rotation speed of the driving shaft 221 can be made less than the opening speed of the moving contact assembly 241 driven by the reset member 232. In this way, one of the two groups of contact mechanisms can be closed first and the other group can be opened later.

[0077] Combine Figure 7-12 Briefly describe its working process:

[0078] A group of contact mechanisms close to the protrusion 10 is the first contact mechanism, and the other group of contact mechanisms is the second contact mechanism. The driving components connected to the first contact mechanism and the second contact mechanism are respectively the first driving component and the second driving component. Correspondingly, the first driving component includes a first linkage and a first reset component, and the second driving group includes a second linkage and a second reset component. The first linkage and the second linkage are respectively connected to the first rotating disk and the second rotating disk. In the figure, the second rotating disk is arranged above the first rotating disk in the third direction. When the rotating shaft 22 rotates to the second position, the first driving component is in the equilibrium position and the second driving component is in the dead point position. When the rotating shaft 22 rotates to the first position, the first driving component is in the dead point position and the second driving component is in the equilibrium position.

[0079] like Figure 7 、 8As shown, the first drive assembly is in a balanced position, the first contact mechanism is in the open position, the first reset member is restored to its original state, the two hinge points of the first linkage member are not colinear with the axis of the rotating shaft 22, and the central axis of the first linkage member and the first reset member are at an angle, and a gap is left between the first connecting portion 22a and one end of the limiting portion 11. At this time, the driving portion 2211 abuts against the closing portion 2221 of the second rotating disk, and the closing portion 2221 of the first rotating disk abuts against the opening portion 2222 of the second rotating disk. There is a gap between the closing portion 2221 of the first rotating disk and the driving portion 2211; the second drive assembly is in a dead point position, at this time, the central axes of the second reset member and the second linkage member are parallel to the first direction, and the second reset member in a compressed state is restricted by the second linkage member, so that the second contact mechanism is in the closed position, and the second connecting portion 22a abuts against one end of the limiting portion 11.

[0080] The driving shaft 22 rotates clockwise, and after the driving part 2211 rotates through the gap with the closing part 2221 of the first rotating disk, the driving part 2211 abuts against the closing part 2221 of the first rotating disk. As the rotating shaft 22 rotates, the first rotating disk rotates in the closing direction, and the first linkage drives the first moving contact assembly 241 in the first contact mechanism to move along the first direction. The first reset member is gradually compressed until the first contact mechanism is closed. At this time, the two hinge points of the first linkage and the deformation direction of the first reset member are collinear, that is, the first linkage and the first reset member are parallel to the first direction, the first connecting part 22a abuts against one end of the limiting part 11, and the first driving assembly is in the dead point position. The first linkage and the first rotating disk cooperate to limit the first reset member, so that the first contact mechanism cannot be opened. In this process, the opening part 2222 of the second rotating disk is pushed by the closing part 2221 of the first rotating disk, so that the second The rotating disk rotates in the opening direction, the second connecting portion 22a is separated from one end of the limiting portion 11, and one end of the second linkage member rotates with the second connecting portion 22a, so that the central axis of the second linkage member forms an angle with the first direction. Since the second linkage member can no longer limit the second reset member, the second reset member releases energy to drive the second contact mechanism to open. Since the moving speed of the movable contact assembly 241 connected to the second reset member is greater than the rotation speed of the rotating shaft 22, after the second contact mechanism is opened, the second drive assembly is in a balanced position, but the first contact mechanism has not yet been closed. The rotating shaft 22 continues to rotate clockwise until the closing portion 2221 of the first rotating disk is respectively in contact with the driving portion 2211 and the opening portion 2222 of the second rotating disk, and a gap is left between the driving portion 2211 and the opening portion 2222 of the first rotating disk. At this time, the first contact mechanism is closed and the first drive assembly is in a dead point position (see Figure 9 、 10 ).

[0081] The driving shaft 22 rotates counterclockwise, and its action process is opposite to the above process. The first driving assembly and the second driving assembly are switched to the equilibrium position and the dead point position again.

[0082] In addition, if Figure 11 、 12 As shown, when the shaft 22 rotates to the middle position, the moving contact assembly 241 of the first contact mechanism and the second contact mechanism has not yet contacted the static contact group. At this time, the first drive assembly and the second drive assembly are both in non-dead point positions and are more close to the equilibrium position, as shown in FIG. Figure 12 As shown, the driving portion 2211 and the two closing portions 2221 are in a separated state, and the closing portion 2221 is separated from the opening portion 2222 of the other rotating disk 222 .

[0083] In this embodiment, if Figure 1 、 2 , 5-7, 9 and 11, a detection device 4 is provided on the outside of the housing 1, and the detection device 4 is connected to the power taking part 213 to obtain a voltage signal of a power supply. The detection device 4 is connected to the power taking part 213 from the outside, which can save internal space and simplify the wiring process, realize single-sided power taking, and facilitate the formation of a modular structure that is easy to disassemble as a whole; preferably, the detection device 4 is arranged on the wiring wall 1b connected between the wiring port 13 and the operating hole, and the edge of the detection device 4 is flush with the edge of the wiring port 13 to avoid covering the wiring port 13 and shorten the wiring distance.

[0084] like Figure 1 As shown, the detection device 4 includes a cover 42 and a connecting circuit board 41. The connecting circuit board 41 is fitted on the side wall of the shell 1 provided with a wiring port 13, that is, the connecting circuit board 41 is fitted on the wiring wall 1b, the connecting circuit board 41 is plugged into the power taking part 213, and the cover 42 is covered on the outside of the connecting circuit board 41 and is fixedly connected to the shell 1.

[0085] In addition, when two or more conductive units are provided in the housing 1, the power taking parts 213 on all incoming line components 211 connected to the same power supply are connected to the same detection device 4, that is, two detection devices 4 are provided outside the transfer switch.

[0086] Combine Figure 1-5 , 15 and 16 provide a second embodiment of a transfer switch.

[0087] like Figure 1-5 As shown, the transfer switch includes a housing 1, in which a drive system 3 and at least one conductive system 2 are arranged. The drive system 3 and the conductive system 2 are stacked in a third direction. Preferably, the total width of the drive system 3 and an adjacent conductive system 2 is a modular width, which is conducive to reducing the overall volume.

[0088] In this embodiment, the housing 1, drive system 3, and detection device 4 have the same structure as in the first embodiment. The conductive system 2 includes two pairs of wiring assemblies. The structure and arrangement of the two pairs of wiring assemblies can adopt the same method as in the first embodiment. However, in this embodiment, an outgoing wire assembly 212 is not omitted. That is, an incoming wire assembly 211 and an outgoing wire assembly 212 are disposed within the protrusion 10. The two outgoing wire assemblies 212 need to be connected in parallel externally. However, in this embodiment, the two pairs of wiring assemblies can also adopt a structure of two incoming wire assemblies 211 and one outgoing wire assembly 212.

[0089] like Figure 15 As shown, the conductive system 2 also includes two groups of contact mechanisms spaced apart in the first direction, and each group of contact mechanisms includes the same moving contact assembly 241, static contact assembly and drive assembly as the first embodiment; a rotating shaft 22 is rotatably arranged between the two groups of contact mechanisms, and the rotating shaft 22 is drivingly connected to the gear set 32 ​​in the drive system 3, that is, the output shaft of the driving gear 321 drives the rotating shaft 22 to rotate, and the rotating shaft 22 includes a rotating shaft body 220, and the central axis of the rotating shaft body 220 is parallel to the third direction. Each group of contact mechanisms also includes a drive assembly, which rotates the rotating shaft 22, and the rotating shaft 22 drives the two groups of drive assemblies, so that one group of contact mechanisms is first opened and the other group of contact mechanisms is closed.

[0090] In this embodiment, the rotating shaft 22 can also switch between the first position, the middle position and the second position in sequence. For the convenience of description, the two groups of contact mechanisms are respectively the first contact mechanism and the second contact mechanism. When the rotating shaft 22 rotates to the first position, the first contact mechanism is closed and the second contact mechanism is opened. When the rotating shaft 22 rotates to the middle position, the first contact mechanism and the moving contact assembly 241 in the second contact mechanism are in a separated state from the static contact group. When the rotating shaft 22 rotates to the second position, the first contact mechanism is opened and the second contact mechanism is closed. Furthermore, the rotating shaft 22 can stop for a period of time when it rotates to the middle position. The stopping of the rotating shaft 22 can be controlled by the drive system 3. That is, when the rotating shaft 22 rotates to the middle position, by controlling the start and stop of the motor 33, the time when the rotating shaft 22 stays in the middle position is controlled, and then the time interval between the switching of the two contact mechanisms between the open and closed states is controlled. Of course, the intermediate position can also be omitted. The rotation speed of the rotating shaft 22 is lower than the opening speed of the movable contact assembly 241 driven by the reset member 232, so that the two sets of contact mechanisms will inevitably open and close in the first place, but the time difference is small.

[0091] Different from the first embodiment, the rotating shaft 22 of this embodiment is an integrated structure, and the rotating shaft 22 includes a cylindrical rotating shaft body 220. The end of the rotating shaft body 220 is used to be driven and connected with the driving system 3 or linked with the rotating shaft 22 in the adjacent conductive system 2. A connecting portion 22a is formed on the circumferential side wall of the rotating shaft body 220 and protrudes radially outward along the rotating shaft body 220. A connecting hole is opened on each connecting portion 22a, and the central angle between the two connecting portions 22a ranges from 90° to 160°.

[0092] The two ends of the linkage member 231 of each drive assembly are respectively hinged on the rotating shaft body 220 and the moving contact assembly 241. In this embodiment, one end of the linkage member 231 is hinged on the connecting hole of the connecting portion 22a, and the other end is hinged on the contact support 2411; the reset member 232 is a spring, one end of the reset member 232 is connected to the housing 1, and the other end is connected to the moving contact assembly 241, that is, it is connected to the contact support 2411 away from the linkage member 231. The central axis of the reset member 232 is parallel to the first direction, and its deformation direction is also parallel to the first direction. The drive assembly structure and working principle of this embodiment are similar to those of the above embodiment.

[0093] In this embodiment, the driving assembly switches between the equilibrium position and the dead point position. When a set of driving assemblies rotates to the dead point position, it can drive the connected contact mechanism to close the switch in place. At this time, the two hinge points of the linkage member 231, the axis of the rotating shaft body 220 and the deformation direction of the reset member 232 are collinear, and the reset member 232 is in a compressed state, that is, the linkage member 231 and the reset member 232 are collinear, and the central axes of the two pass through the axis of the rotating shaft body 220. Under the limitation of the linkage member 231 and the rotating disk 222, the reset member 232 cannot drive the moving contact assembly 241 to The other set of driving components rotates to the equilibrium position, so that the connected contact mechanism opens in place. At this time, the deformation direction of the reset member 232 is still in the first direction, but the central axis of the linkage member 231 is at an angle to the deformation direction of the reset member 232, and the two hinge points of the linkage member 231 are not colinear with the axis of the rotating shaft body 220. The linkage member 231 and the rotating disk 222 no longer limit the deformation of the reset member 232, and the reset member 232 releases energy in a normal state. At the same time, the linkage member 231 in the equilibrium state does not hinder the continued rotation of the rotating shaft 22.

[0094] Furthermore, a limiting portion 11 is provided in the housing 1. The limiting portion 11 is a segment of arc-shaped boss similar to the first embodiment. The limiting portion 11 is arranged around the side of the rotating shaft 22 facing away from the connecting portion 22a. When the rotating shaft 22 is rotated, each connecting portion 22a can respectively cooperate with the stop of the limiting portion 11, thereby adjusting the rotation angle of the rotating shaft body 220 and avoiding relying solely on the drive system 3 to control the stop of the rotating shaft 22.

[0095] Combine Figure 15Briefly describe its working process:

[0096] A group of contact mechanisms close to the protrusion 10 is the first contact mechanism, and the other group of contact mechanisms is the second contact mechanism. The driving components connected to the first contact mechanism and the second contact mechanism are respectively the first driving component and the second driving component. Correspondingly, the first driving component includes a first linkage member and a first reset member, and the second driving group includes a second linkage member and a second reset member. The two connecting parts 22a hinged to the first linkage member and the second linkage member are respectively the first connecting part and the second connecting part.

[0097] like Figure 15 As shown, the first drive assembly is in a balanced position, the first contact mechanism is in the open position, the first reset member is restored to its original state, the two hinge points of the first linkage member are not colinear with the axis of the rotating shaft 22, and the central axis of the first linkage member and the first reset member form an angle, and a gap is left between the first connecting portion and one end of the limiting portion 11; the second drive assembly is in a dead point position, at this time the central axis of the second reset member and the second linkage member are parallel to the first direction, and the second reset member in a compressed state is restricted by the second linkage member, so that the second contact mechanism is in the closed position, and the second connecting portion abuts against one end of the limiting portion 11;

[0098] The driving shaft 22 rotates clockwise, and the first connecting portion drives the first linkage member to rotate. As the shaft 22 rotates, the first linkage member drives the first moving contact assembly in the first contact mechanism to move along the first direction. At the same time, the first reset member is gradually compressed until the first contact mechanism is closed. At this time, the two hinge points of the first linkage member and the deformation direction of the first reset member are collinear, that is, the first linkage member and the first reset member are parallel to the first direction. The first connecting portion abuts against one end of the limit portion 11, and the first driving assembly is in a dead point position. Under the action of the first reset member, the first linkage member and the shaft body 220, The first contact mechanism is restricted in the closed position. At the same time, the second connecting portion is separated from one end of the limiting portion 11, and one end of the second linkage member rotates with the second connecting portion, so that the central axis of the second linkage member forms an angle with the first direction. Since the second linkage member can no longer limit the second reset member, the second reset member releases energy and cooperates with the shaft body 220 to drive the second contact mechanism to open. After the second contact mechanism is opened, the second drive assembly is in a balanced position; the drive shaft 22 rotates counterclockwise, and its action process is opposite. The first drive assembly and the second drive assembly are switched to the balanced position and the dead point position again.

[0099] In this embodiment, the driving assembly may also include only the linkage member 231 without the reset member 232. However, the structure without the reset member 232 has slightly poor stability at the dead point position or the equilibrium position.

[0100] It should be noted that, compared with the split rotating shaft 22 in the first embodiment, the integrated rotating shaft 22 in this embodiment makes the time difference between the contact mechanism that opens first and the contact mechanism that closes later in the two groups of contact mechanisms slightly smaller than the time difference in the first embodiment, and the time difference is mainly determined by the rotation speed of the rotating shaft 22.

[0101] It should be noted that, in the description of the present invention, the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, or are conventionally placed in use. They are intended solely for ease of description and do not necessarily require the devices or components referred to to have a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third," etc., are used solely for distinction and description and should not be construed as indicating relative importance.

[0102] The above is a further detailed description of the present invention in conjunction with specific preferred embodiments, and the specific implementation of the present invention should not be considered to be limited to these descriptions. For those skilled in the art to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, and all of these should be considered to fall within the scope of protection of the present invention.

Claims

1. A transfer switch, comprising a housing (1), wherein a drive system (3) and at least one conductive system (2) are arranged in the housing (1), each conductive system (2) comprising two groups of contact mechanisms, at least two incoming line assemblies (211) and at least one outgoing line assembly (212), the two groups of contact mechanisms being spaced apart in a first direction, and each group of contact mechanisms being connected between an incoming line assembly (211) and an outgoing line assembly (212) in a second direction, each group of contact mechanisms comprising a movable contact assembly (241) and a stationary contact group spaced apart and facing each other in the first direction, characterized in that: A rotating shaft (22) is rotatably arranged between the two groups of contact mechanisms, the central axis of the rotating shaft (22) is parallel to the third direction, the driving system (3) and the conductive system (2) are stacked in the third direction and are drivingly connected to the rotating shaft (22) of at least one conductive system (2). The moving contact assembly (241) is connected to a driving assembly, and the rotating shaft (22) is rotated, and the rotating shaft (22) cooperates with the driving assembly to make one group of contact mechanisms open first and then close the other group of contact mechanisms. The first direction, the second direction and the third direction are perpendicular to each other.

2. The transfer switch according to claim 1, wherein: In the third direction, the total width of the driving system (3) and an adjacent conductive system (2) is a module width.

3. The transfer switch according to claim 1, wherein: In the third direction, each conductive system (2) is one module width, and the driving system (3) is equal to one module width.

4. The transfer switch according to claim 1, wherein: The invention comprises two incoming line assemblies (211) and two outgoing line assemblies (212); in a second direction, the spacing between one incoming line assembly (211) and one outgoing line assembly (212) is smaller than the spacing between another incoming line assembly (211) and another outgoing line assembly (212); all the incoming line assemblies (211) are located on the same side of two contact mechanisms, and the two outgoing line assemblies (212) are located on the other side of the two contact mechanisms.

5. The transfer switch according to claim 1, wherein: It comprises two incoming line assemblies (211) and one outgoing line assembly (212), two groups of contact mechanisms are respectively connected to the two incoming line assemblies (211), and the two groups of contact mechanisms are connected to the same outgoing line assembly (212).

6. The transfer switch according to claim 5, characterized in that: A middle portion of one side of the housing (1) protrudes outwards along a first direction to form a protruding portion (10), and at least one incoming line assembly (211) is arranged inside the protruding portion (10).

7. The transfer switch according to claim 1, wherein: The housing (1) is provided with a wiring port (13) corresponding to the wiring assembly, and a detection device (4) is provided on the housing (1) on one side of the wiring port (13), and the detection device (4) is connected to a power supply unit (213) connected to the wiring assembly to obtain power.

8. The transfer switch according to claim 1, wherein: The housing (1) is provided with an indication window (12), the indication window (12) corresponds to the drive system (3), the drive system (3) comprises an indication gear (322), and the indication gear (322) is provided with an indication portion (3221) that cooperates with the indication window (12).

9. The transfer switch according to claim 1 or 8, characterized in that: The drive system (3) comprises a control circuit board (31), a motor (33), and a gear set (32) meshed with the motor (33); the control circuit board (31) and the gear set (32) are stacked in a third direction; the motor (33) is connected to the control circuit board (31); and the output shaft of the gear set (32) is drivingly connected to the rotating shaft (22).

10. The transfer switch according to claim 1, characterized in that: The driving assembly comprises a linkage member (231) and a reset member (232), wherein both ends of the linkage member (231) are respectively hinged between the rotating shaft (22) and the moving contact assembly (241), the reset member (232) is connected to a side of the moving contact assembly (241) away from the linkage member (231), and the reset member (232) undergoes elastic deformation along a first direction.

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