Change-over switch

Abstract

A change-over switch comprises a shell and a conductive system, the conductive system comprises a rotating shaft and two groups of contact mechanisms, a rotating shaft body of the rotating shaft is rotatably arranged between the two groups of contact mechanisms, each group of contact mechanism comprises a moving contact assembly and a static contact assembly which are arranged at an interval, each group of contact mechanism further comprises a driving assembly, and the driving assembly comprises a linkage piece. The linkage pieces are hinged between the moving contact assembly and the rotating shaft body, the hinge point of the two linkage pieces on the rotating shaft body is not collinear with the axis of the rotating shaft body, and the rotating shaft is rotated to drive 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 utility model, the integrated rotating shaft and the two groups of driving assemblies are matched to drive the two groups of contact mechanisms, so that the internal space is saved, the internal structure is more compact, meanwhile, the opening position of one group of contact mechanism is prior to the closing position of the other group of contact mechanism, the input requirements of two groups of power supplies can be met, and the use safety is improved.

Description

Technical Field

[0001] The utility model relates to the field of low-voltage electrical appliances, in particular to a conversion 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, the transfer switch usually switches between the normal and standby power supplies by switching the opening and closing states of two sets of contact mechanisms. The two sets of contact mechanisms are linked through two rotating shafts and an interlocking mechanism connected between the two rotating shafts. Such a structure has the following defects: first, the two rotating shafts and the interlocking mechanism occupy a large space, and the coordination is cumbersome, which is not conducive to miniaturized design; second, the opening and closing states of the two sets of contact mechanisms are switched almost simultaneously, which is not conducive to meeting the switching needs of the normal and standby power supplies. Summary of the invention

[0004] The utility model aims to overcome at least one defect of the prior art and provide a transfer switch.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] The utility model provides a conversion switch, comprising a shell and a conductive system arranged in the shell, wherein the conductive system comprises a rotating shaft and two groups of contact mechanisms, wherein a rotating shaft body of the rotating shaft is rotatably arranged between the two groups of contact mechanisms, wherein each group of contact mechanisms comprises a movable contact assembly and a stationary contact assembly arranged at intervals, wherein each group of contact mechanisms further comprises a driving assembly, wherein the driving assembly comprises a linkage member, wherein the linkage member is hinged between the movable contact assembly and the rotating shaft body, and the hinge points of the two linkage members on the rotating shaft body are not colinear with the axis of the rotating shaft body, and the rotating shaft is rotated to drive the driving assembly, so that one group of contact mechanisms is first opened to a certain position, and then the other group of contact mechanisms is closed to a certain position.

[0007] Preferably, each group of drive components switches between a balance position and a dead point position, wherein one group of drive components rotates to the dead point position to drive the connected contact mechanism to close the switch, and the other group of drive components rotates to the balance position to open the connected contact mechanism.

[0008] Preferably, at the dead point, the two hinge points of the linkage member and the axis of the rotating shaft body are collinear, and at the equilibrium position, the two hinge points of the linkage member and the axis of the rotating shaft body are not collinear.

[0009] Preferably, the rotating shaft rotates between a first position, an intermediate position and a second position in sequence. When the rotating shaft rotates to the first position or the second position, one group of contact mechanisms is in a closed position and the other group of contact mechanisms is in an open position. When the rotating shaft rotates to the intermediate position, the moving contact assemblies in the two groups of contact mechanisms are separated from the static contact assemblies.

[0010] Preferably, the driving assembly further comprises a reset member, the reset member is connected to the moving contact assembly, and the reset member cooperates with the linkage member to drive the moving contact assembly.

[0011] Preferably, the rotating shaft further comprises two connecting parts, each connecting part is protrudingly arranged on the circumferential side wall of the rotating shaft body, and each connecting part is provided with a connecting hole for the hinged linkage member.

[0012] Preferably, a limiting portion is provided in the housing, the limiting portion is located on one side of the rotating shaft, and the two connecting portions respectively cooperate with the stoppers of the limiting portion to limit the rotation range of the rotating shaft.

[0013] Preferably, the conductive system further comprises wiring assemblies arranged in pairs, each set of contact mechanisms is connected between a pair of wiring assemblies, wherein the interval between one pair of wiring assemblies is smaller than the interval between another pair of wiring assemblies.

[0014] Preferably, the moving contact assembly comprises 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, and both ends of the moving contact bridge extend out of the mounting groove as moving contact parts;

[0015] The static contact group comprises two static contacts arranged at intervals, each of the static contacts is respectively provided with a static contact portion, and each static contact portion is spaced and opposite to a dynamic contact portion.

[0016] Preferably, a driving system is also provided in the housing, and the driving system is stacked with the conductive system. The driving system includes a motor and a gear set driven by the motor, and the output end of the gear set is drivingly connected to the rotating shaft.

[0017] The conversion switch of the utility model is composed of an integrated rotating shaft and two sets of driving components to drive two sets of contact mechanisms, which saves internal space and makes the internal structure more compact. At the same time, the opening of one set of contact mechanisms is performed before the closing of the other set of contact mechanisms, which can meet the input requirements of two sets of power supplies and improve the safety of use.

[0018] In addition, the driving component switches between the equilibrium position and the dead point position, thereby driving the contact mechanism to switch between the opening position and the closing position. The matching structure is simple and the stability is good.

[0019] In addition, the rotating shaft rotates between three positions. When it reaches the middle position, the moving contact assemblies of the two sets of contact mechanisms are separated from the static contact groups. By setting the middle position, it is helpful to extend the time difference between the first opening contact mechanism and the later closing contact mechanism, further meet the power input requirements and improve safety.

[0020] In addition, the connecting portion of the rotating shaft can be used for the hinged driving assembly and can also cooperate with the limiting portion in the shell to limit the rotation angle of the rotating shaft, thereby improving the overall reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure inside the conductive system of the utility model;

[0022] Figure 2 It is a structural schematic diagram of the rotating shaft of the utility model;

[0023] Figure 3 It is a structural schematic diagram of the drive system in the utility model;

[0024] Reference numerals:

[0025] 1-housing, 10-protrusion, 11-limiting part, 2-conductive system, 211-incoming line assembly, 212-outgoing line assembly, 22-rotating shaft, 22a-connecting part, 220-rotating shaft body, 231-linkage part, 232-resetting part, 241-moving contact assembly, 2411-contact support, 2412-moving contact part, 242-static contact, 2421-static contact part, 3-driving system, 31-control circuit board, 32-gear set, 321-driving gear, 33-motor. DETAILED DESCRIPTION

[0026] The following is a further description of the specific implementation of the transfer switch of the present utility model in conjunction with the embodiments given in the accompanying drawings. The transfer switch of the present utility model is not limited to the description of the following embodiments.

[0027] like Figure 1 , 3 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 wiring assemblies arranged in pairs, two groups of contact mechanisms and a rotating shaft 22, each pair of wiring assemblies are arranged at opposite ends of the housing 1 at intervals, and each wiring assembly is used to connect to an external power supply relative to a wiring port opened on the housing 1, that is, the conductive system 2 includes at least two pairs of wiring assemblies, one pair of wiring assemblies is used to connect to a normal power supply, and the other pair of wiring assemblies is used to connect to a backup power supply.

[0028] Specifically, the two groups of contact mechanisms in each conductive system 2 are spaced opposite to each other in the housing 1, and each group of contact mechanisms is connected between a pair of wiring assemblies. The rotating shaft 22 is arranged between the two groups of contact mechanisms. The driving 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 common 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 common 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 opposite to each other, and under the direct or indirect drive of the driving system 3, the moving contact assembly 241 of each group of contact mechanisms moves along a straight line to contact or separate from the static contact group.

[0029] For the convenience of description, the moving direction of the moving contact assembly 241 is taken as the first direction, that is, Figure 1 , 3 The up-down direction in the figure is the first direction, the two sets of contact mechanisms are arranged at intervals in the first direction, and the connection direction between a pair of wiring components is the second direction, that is, Figure 1 , 3 The left and right directions in the figure are the second directions, and the third direction is perpendicular to both the first direction and the second direction. Figure 1 , 3 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.

[0030] The improvement of the present application is that each group of contact mechanisms also includes a driving assembly, and the driving assembly includes a linkage member 231, and the linkage member 231 is hinged between the moving contact assembly 241 and the rotating shaft body 220, and the hinge points of the two linkage members 231 on the rotating shaft body 220 are not colinear with the axis of the rotating shaft body 220. The rotating shaft 22 drives the two groups of driving assemblies, so that one group of contact mechanisms is opened first, and the other group of contact mechanisms is closed.

[0031] In this way, an integrated rotating shaft 22 cooperates with two sets of driving components to drive two contact mechanisms, saving internal space and making the internal structure more compact. At the same time, the opening of one set of contact mechanisms is before the closing of the other set, which can meet the power input requirements of two sets and improve the safety of use.

[0032] Specifically, each set of drive components switches between the equilibrium position and the dead point position, one set of drive components rotates to the dead point position, driving the connected contact mechanism to close in place, and the other set of drive components rotates to the equilibrium position, making the connected contact mechanism open in place, and the matching structure of the drive components is simple and has good stability. Further, the rotating shaft 22 rotates between the first position, the middle position and the second position in sequence, when the rotating shaft 22 rotates to the first position or the second position, one set of contact mechanisms opens in place, and the other set of contact mechanisms closes in place, when the rotating shaft 22 rotates to the middle position, the moving contact components 241 in the two sets of contact mechanisms are separated from the static contact group, and by setting the middle position, the two contact mechanisms can have a period of time when switching the opening and closing states, thereby increasing the time difference between the contact mechanism that opens first and the contact mechanism that closes later, further meeting the power input requirements and improving safety.

[0033] Combination Figure 1-3 A specific embodiment of a transfer switch is provided.

[0034] like Figure 1 , 3 As shown, the transfer switch includes a housing 1, a drive system 3 and at least one conductive system 2 are arranged in the housing 1, and the drive system 3 and the conductive system 2 are stacked in the third direction. Preferably, the total width of the drive system 3 and an adjacent conductive system 2 is a module width, which is conducive to reducing the overall volume. In the present application, a module width is 18 mm.

[0035] like Figure 1 , 3 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" shaped structure. When the number of conductive systems 2 is two or more, a partition can be arranged inside the shell 1 to separate two adjacent conductive systems 2 or 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 of which has at least one conductive system 2 arranged therein, wherein a drive system 3 and a conductive system 2 can be arranged in one of the unit shells at the same time, and the total width of the drive system 3 and one conductive system 2 is a module width. Of course, the drive system 3 can also be arranged in a unit shell alone, and the width of the unit shell is preferably a module width. The width of the unit shell for assembling the drive system 3 can also be adjusted according to the actual situation of the drive system 3.

[0036] The shell 1 includes a pair of support walls arranged at intervals in the third direction, and a wiring wall, an operating wall and a connecting wall perpendicular to the support wall plate surface are connected between the pair of support walls, wherein the wiring walls are arranged in pairs and are spaced opposite to each other in the second direction, the operating wall and the connecting wall are spaced apart in the first direction, the operating wall is adjacent to the wiring wall, and an operating hole is opened on the operating wall, and a wiring port is opened on the wiring wall, each wiring assembly corresponds to an operating hole and a wiring port for matching wiring. In this embodiment, the shell 1 is provided with a protrusion 10, and its support wall is a "convex"-shaped plate body as a whole, and the connecting wall is located on the side of the shell 1 away from the protrusion 10, and the side walls spaced opposite to the connecting wall in the first direction are all operating walls, and the side walls spaced apart and arranged in pairs in the second direction are wiring walls.

[0037] like Figure 3 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 housing 1 in the third direction, the motor 33 is connected to the control circuit board 31 and the controller of 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 and connected 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 a plurality of meshed gears, one of the gears in the gear set 32 ​​is used as a driving gear 321, the output shaft of the driving gear 321 is used to drive the contact mechanism in the conductive system 2 to open and close, and the drive system 3 can also adopt the existing technology.

[0038] like Figure 1 As shown, the conductive system 2 includes two pairs of wiring components, the two pairs of wiring components are arranged at intervals in the first direction, and in the second direction, each pair of wiring components are arranged at intervals, wherein the interval between one pair of wiring components is smaller than the interval between another pair of wiring components. In the figure, one 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 close to the connecting wall. Each pair of wiring components includes an incoming line component 211 and an outgoing line component 212. In this embodiment, all the 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 externally; as another embodiment, the two pairs of wiring components can also adopt a structure of two incoming line components 211 and one outgoing line component 212, that is, two pairs of wiring components share one outgoing line component 212, and the structure of each wiring component can adopt the existing technology.

[0039] In this embodiment, two sets of contact mechanisms are also provided in the conductive system 2, such as Figure 1As shown, two groups of contact mechanisms are arranged at intervals in the first direction, and each group of contact mechanisms includes a movable contact assembly 241 and a stationary contact group that are spaced and opposite to 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, and the movable contact bridge is arranged in the assembly groove along the second direction. Both ends of the movable contact bridge extend out of the assembly groove as movable contact portions 2412. The stationary contact group includes two stationary contacts 242 that are spaced and arranged in the second direction. Figure 1 As shown, each stationary contact 242 includes a stationary contact plate, one end of which is provided with a stationary contact portion 2421 , each stationary contact portion 2421 cooperates with a moving contact portion 2412 , and the other end of the stationary contact plate is connected to an adjacent wiring assembly.

[0040] A rotating shaft 22 for driving two moving contact assemblies 241 is rotatably arranged between the two groups of contact mechanisms. 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. 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 driving assembly. The rotating shaft 22 is rotated, and the two groups of driving assemblies are driven by the rotating shaft 22, so that one group of contact mechanisms is first opened and the other group of contact mechanisms is closed.

[0041] In this embodiment, 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, 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, the start and stop of the motor 33 is controlled to control the time when the rotating shaft 22 stays in the middle position, thereby controlling the time interval between the switching of the two contact mechanisms into and out of the open and closed states. Of course, the intermediate position can also be omitted, and 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 the switch in place first and then close the switch in place, but the time difference is small.

[0042] Specifically, Figure 2As shown, the rotating shaft 22 is an integral 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 connected to the driving system 3 or to be linked to 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 outward along the radial direction of 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 is between 90° and 160°.

[0043] Each set of driving components includes a linkage member 231, wherein the linkage member 231 is rod-shaped, and the two ends of the linkage member 231 are respectively hinged on the shaft body 220 and the moving contact assembly 241. In the present 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. In the dead point position, the two hinge points of the linkage member 231 are collinear or tend to be collinear with the axis of the shaft body 220, and the linkage member 231 and the shaft body 220 can limit the moving contact assembly 241 so that the moving contact assembly 241 is in place. In the equilibrium position, the two hinge points of the linkage member 231 are not collinear with the axis of the shaft body 220, and the linkage member 231 and the shaft body 220 can no longer limit the moving contact assembly 241, and the moving contact assembly 241 has been driven to start opening until it is in place.

[0044] Preferably, each set of driving components further includes a reset member 232, which is a section of 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, 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 reset member 232 and the linkage member 231 cooperate to drive the moving contact assembly 241. When at the dead point position, the deformation direction of the reset member 232 is parallel to the first direction. The two hinge points of the linkage member 231 are collinear. 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 directions 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 shaft body 220 nor cooperate with the shaft body 220 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 the switch.

[0045] Furthermore, a limiting portion 11 is provided in the housing 1. Figure 1 The middle limiting portion 11 is an arc-shaped boss. 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 stopper of the limiting portion 11, thereby limiting the rotation angle of the rotating shaft body 220 and avoiding the stopping of the rotating shaft 22 controlled by the driving system 3 alone.

[0046] Combination Figure 1 , 2 Briefly describe its working process:

[0047] 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.

[0048] like Figure 1 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 are at 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 which 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 abuts against one end of the limiting portion 11.

[0049] 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 241 in the first contact mechanism to move along the first direction, and 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 limiting 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 Under the present invention, the first contact mechanism is restricted in the closing position, and at the same time, the second connecting part is separated from one end of the limiting part 11, and one end of the second linkage member rotates with the second connecting part, 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 energy released by the second reset member can be used to drive the second contact mechanism to open the gate, thereby accelerating the opening speed. After the second contact mechanism opens in place, 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.

[0050] Of course, the driving assembly in this embodiment may also include only the linkage member 231 and omit the reset member 232, but the stability at the dead point position or the equilibrium position is slightly worse.

[0051] 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 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 a limitation on 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.

[0052] The above contents are further detailed descriptions of the present invention in combination with specific preferred implementations, and the specific implementation of the present invention cannot be considered to be 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 transfer switch, comprising a housing (1) and a conductive system (2) arranged in the housing (1), the conductive system (2) comprising a rotating shaft (22) and two groups of contact mechanisms, a rotating shaft body (220) of the rotating shaft (22) being rotatably arranged between the two groups of contact mechanisms, each group of contact mechanisms comprising a movable contact assembly (241) and a stationary contact group arranged at intervals, characterized in that: Each group of contact mechanisms also includes a driving assembly, wherein the driving assembly includes a linkage member (231), wherein the linkage member (231) is hinged between the moving contact assembly (241) and the rotating shaft body (220), and the hinge points of the two linkage members (231) on the rotating shaft body (220) are not colinear with the axis of the rotating shaft body (220), and the rotating shaft (22) is rotated to drive the driving assembly, so that one group of contact mechanisms is first opened and the other group of contact mechanisms is then closed.

2. The transfer switch according to claim 1, characterized in that: Each set of drive components switches between a balanced position and a dead point position. One set of drive components rotates to the dead point position to drive the connected contact mechanism to close the switch, and the other set of drive components rotates to the balanced position to open the connected contact mechanism.

3. The transfer switch according to claim 2, characterized in that: At the dead point, the two hinge points of the linkage member (231) and the axis of the rotating shaft body (220) are collinear, and at the equilibrium position, the two hinge points of the linkage member (231) and the axis of the rotating shaft body (220) are not collinear.

4. The transfer switch according to claim 1, characterized in that: The rotating shaft (22) rotates in sequence between a first position, an intermediate position and a second position. When the rotating shaft (22) rotates to the first position or the second position, one group of contact mechanisms is in a closed position and the other group of contact mechanisms is in an open position. When the rotating shaft (22) rotates to the intermediate position, the moving contact assemblies (241) in the two groups of contact mechanisms are separated from the stationary contact assemblies.

5. The transfer switch according to claim 1, characterized in that: The driving assembly further comprises a reset member (232), the reset member (232) being connected to the moving contact assembly (241), and the reset member (232) cooperates with the linkage member (231) to drive the moving contact assembly (241).

6. The transfer switch according to claim 1, characterized in that: The rotating shaft (22) further comprises two connecting parts (22a), each connecting part (22a) is protrudingly arranged on the circumferential side wall of the rotating shaft body (220), and each connecting part (22a) is provided with a connecting hole for a hinged linkage member (231).

7. The transfer switch according to claim 6, characterized in that: A limiting portion (11) is arranged in the housing (1), the limiting portion (11) is located on one side of the rotating shaft (22), and the two connecting portions (22a) respectively cooperate with the limiting portion (11) to limit the rotation range of the rotating shaft (22).

8. The transfer switch according to claim 1, characterized in that: The conductive system (2) also includes wiring components arranged in pairs, each group of contact mechanisms is connected between a pair of wiring components, and the interval between one pair of wiring components is smaller than the interval between another pair of wiring components.

9. The transfer switch according to claim 1, characterized in that: The moving contact assembly (241) comprises a contact support (2411) and a moving contact bridge, wherein a mounting groove is provided in the middle of the contact support (2411), the moving contact bridge is arranged in the mounting groove, and both ends of the moving contact bridge serve as moving contact parts (2412) extending outside the mounting groove; The static contact group comprises two static contacts (242) arranged at intervals, each static contact (242) is respectively provided with a static contact portion (2421), and each static contact portion (2421) is spaced and opposed to a dynamic contact portion (2412).

10. The transfer switch according to claim 1, characterized in that: A drive system (3) is also arranged in the housing (1), and the drive system (3) is stacked with the conductive system (2). The drive system (3) comprises a motor (33) and a gear set (32) driven by the motor (33), and the output end of the gear set (32) is drivingly connected to the rotating shaft (22).

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