Dual power switch

Abstract

The utility model discloses a double power supply change-over switch, its core is through the first, second change-over knob of two staggered protruding on handle to trigger the corresponding trigger portion on the normal use and standby change-over support, to drive the movable contact piece on the normal use and standby change-over support to act, to realize the access of normal power supply or standby power supply, greatly simplifies the spare parts quantity and structure of the operation mechanism of current existing double power supply change-over switch, and the requirement of worker technology and tool fixture also reduces along with it, which directly improves production efficiency and product consistency, and reduces production cost, through protruding direct conversion is the linear motion of change-over support, and the operation force is more directly used in the opening and closing of contact, and the action is more rapid and reliable, and the space is saved, and it lays a solid foundation for the miniaturization of whole product, and the double power supply change-over switch can easily parallel or combined use multiple modules according to the current capacity or the demand of pole number.

Description

Technical Field

[0001] This utility model relates to the field of low-voltage electrical technology, specifically to a dual-power switching switch. Background Technology

[0002] A dual power transfer switch is a commonly used low-voltage electrical appliance, often used for switching between two power sources to ensure that when one power source fails or stops supplying power, the other power source can be switched to ensure that the load circuit is powered normally.

[0003] The operating mechanism is the core component of a dual-power transfer switch, enabling switching between two power sources. Its core function is to ensure reliable, mechanically interlocked switching between the primary and backup power supplies. To achieve absolute reliability in switching on and off and to prevent short circuits caused by misoperation, the operating mechanisms of existing dual-power transfer switches are often very precise and complex in their mechanical design. This directly leads to numerous components, high assembly process requirements, and high production costs. Furthermore, miniaturization has become a development trend in the low-voltage electrical appliance industry, and as an important component of low-voltage electrical appliances, dual-power transfer switches also face higher design requirements in terms of modularity and miniaturization.

[0004] In view of this, there is an urgent need to design a dual power transfer switch to solve the technical defects of existing dual power transfer switches, while meeting the market demand for miniaturization of low-voltage electrical appliances. Utility Model Content

[0005] To solve the above problems, this utility model provides a dual power supply switch, including at least two sets of dual power supply switching modules. Each dual power supply switching module includes a housing and a handle rotatably connected to the housing. The housing has an inlet terminal and an outlet terminal on each side. The inlet terminal is connected to a main power supply inlet terminal and a backup power supply inlet terminal. The outlet terminal is connected to an outlet terminal. A main power supply terminal block and a backup power supply terminal block are respectively connected to the main power supply inlet terminal and the backup power supply inlet terminal. An outlet terminal block is connected to the outlet terminal. The inner cavity of the housing is connected to a main power supply switching component and a backup power supply switching component. Each backup switching component includes a switching bracket and a movable contact piece connected to the switching bracket. The switching bracket has a trigger portion on the side near the handle. The handle has a first switching lever and a second switching lever with a misaligned protrusion on its outer wall near the trigger portion. The first switching lever is linked to the trigger portion of the standard switching component, enabling the movable contact piece of the standard switching component to contact and disconnect with the standard power supply terminal block and the outgoing terminal block. The second switching lever is linked to the trigger portion of the backup switching component, enabling the movable contact piece of the backup switching component to contact and disconnect with the backup power supply terminal block and the outgoing terminal block.

[0006] In one possible implementation, the first switching block and the second switching block are not on the same plane; the first switching block and the triggering part of the commonly used switching component are on the same working plane; and the second switching block and the triggering part of the spare switching component are on the same working plane.

[0007] In one possible implementation, the side of the first switching block facing the trigger portion of the normal power switching component sequentially includes a first breaking recess, a first guide portion, and a first closing recess; the side of the second switching block facing the trigger portion of the standby switching component sequentially includes a second breaking recess, a second guide portion, and a second closing recess. When the dual power supply switching switch is in the normal power supply closed position, the trigger portion of the normal power supply switching component is connected to the first closing recess, and the moving contact of the normal power supply switching component is electrically connected to the normal power supply terminal block and the outgoing terminal block, respectively. When the dual power supply switching switch is in the standby power supply position... When the power supply is in the closed position, the trigger part of the backup switching component is connected to the second closed recess, and the moving contact of the backup switching component is electrically connected to the backup power supply terminal block and the outgoing terminal block respectively; when the dual power supply switching switch is in the open position, the trigger part of the normal switching component is connected to the first disconnecting recess, the trigger part of the backup switching component is connected to the second disconnecting recess, the moving contact of the normal switching component is separated from the normal power supply terminal block and the outgoing terminal block respectively, and the moving contact of the backup switching component is separated from the backup power supply terminal block and the outgoing terminal block respectively.

[0008] In one possible implementation, the switching bracket has a movable contact slot, a movable contact spring is provided in the movable contact slot, the movable contact is connected in the movable contact slot, one end of the movable contact spring abuts against the inner wall of the movable contact slot, and the other end of the movable contact spring abuts against the movable contact.

[0009] In one possible implementation, a positioning post is provided on the inner wall of the movable contact slot, opposite the position of the movable contact spring; positioning grooves are provided on both sides of the movable contact; and positioning protrusions are provided on the side walls of the movable contact slot, with the positioning protrusions connected within the positioning grooves.

[0010] In one possible implementation, the bottom of the switching bracket is provided with a bracket reset slot, and a bracket reset spring is provided inside the bracket reset slot. One end of the bracket reset spring abuts against the inner wall of the bracket reset slot, and the other end of the bracket reset spring abuts against the housing.

[0011] In one possible implementation, the housing includes a partition plate and side covers located on both sides of the partition plate. Guide grooves are provided on the inner walls of the side covers and on both sides of the partition plate. The switching bracket is connected to the guide grooves of the side covers and the guide grooves of the partition plate, respectively.

[0012] In one possible implementation, slots are provided on both the partition plate and the side cover, and the main power supply terminal block, the backup power supply terminal block and the outgoing terminal block are respectively connected to the slots.

[0013] In one possible implementation, the outgoing terminal block includes an outgoing connection end, a first outgoing mating end, and a second outgoing mating end. The outgoing connection end is connected to the outgoing terminal, and the first outgoing mating end and the second outgoing mating end are respectively linked to the moving contact of the commonly used switching component and the spare switching component.

[0014] In one possible implementation, the handles of the dual power switching module are connected by an interlocking element.

[0015] The working principle of this dual power supply transfer switch is as follows: When the primary power supply needs to be connected to the circuit, the handle is rotated manually or electrically to activate the first switching block, which then acts on the trigger of the primary power supply switching component. This moves the switching bracket of the primary power supply switching component, enabling electrical contact between the moving contact of the primary power supply switching component and the primary power supply terminal block and the outgoing terminal block. Due to the misalignment of the first and second switching blocks in the handle position, the second switching block does not act on the trigger of the backup switching component, thus separating the moving contact of the backup switching component from the backup power supply terminal block and the outgoing terminal block. At this time, the primary power supply... The power supply provides power to the circuit in use. When a backup power supply is needed to connect to the circuit, the handle is rotated manually or electrically to activate the second switching block, which in turn activates the trigger of the backup switching component. This causes the switching bracket of the backup switching component to move, making electrical contact between the moving contact of the backup switching component and the backup power supply terminal block and the outgoing terminal block. Due to the misalignment of the first and second switching blocks in the handle position, the first switching block does not activate the trigger of the commonly used switching component, thus separating the moving contact of the commonly used switching component from the commonly used power supply terminal block and the outgoing terminal block. At this time, the backup power supply provides power to the circuit in use.

[0016] Compared with the prior art, the technical solution provided by this utility model has the following advantages: The core of this technical solution's dual power transfer switch operating mechanism is to trigger the corresponding triggering parts on the normal and standby switching brackets by using the two staggered protrusions on the handle as first and second switching blocks. This, in turn, drives the moving contact pieces on the normal and standby switching brackets to move, thereby enabling the connection of the normal or standby power supply. This greatly simplifies the number of parts and structure of existing dual power transfer switch operating mechanisms, while also reducing the requirements for worker skills and tooling fixtures. This directly improves production efficiency and product consistency, and reduces production costs.

[0017] The staggered design of the first and second switching blocks in the dual power supply transfer switch operating mechanism of this technical solution is the key to achieving interlocking. From a mechanical structure perspective, it ensures that in any operating position, only one switching block can press down its corresponding trigger part to connect one power supply, while the other switching block is in the disconnected position. This fundamentally eliminates the possibility of the moving contacts of the main power supply and the backup power supply simultaneously contacting the outgoing terminal block, thereby effectively preventing short circuit accidents of the two power supplies due to misoperation, and ensuring very high reliability.

[0018] In this technical solution, the rotational motion of the handle is directly converted into the linear motion of the switching bracket through the protrusion. The transmission chain is short, the mechanical efficiency is high, and the operating force acts more directly on the opening and closing of the contacts, resulting in faster and more reliable operation. The simplified linear transmission structure saves more space than the complex linkage mechanism, laying a solid foundation for the miniaturization of the entire product. It perfectly matches the development trend of the low-voltage electrical appliance industry. At the same time, the dual power supply switching switch can easily connect or combine multiple modules according to the current capacity or number of poles required. Attached Figure Description

[0019] Figure 1 This is a perspective view of a dual power supply switching switch according to an embodiment of the present invention.

[0020] Figure 2 This is an exploded view of the dual power supply switching switch according to an embodiment of this utility model.

[0021] Figure 3 This is an exploded view of the dual power supply switching module according to an embodiment of this utility model.

[0022] Figure 4 This is a perspective view of the operating mechanism of the dual power supply switching module according to an embodiment of the present invention.

[0023] Figure 5 This is a perspective view of the handle in an embodiment of the present utility model.

[0024] Figure 6 This is a perspective view of the commonly used switching component and the backup switching component in the embodiments of this utility model.

[0025] Figure 7This is a cross-sectional view of the commonly used switching component and the backup switching component in the embodiments of this utility model.

[0026] Figure 8 This is a perspective view of the partition plate in an embodiment of the present utility model.

[0027] Figure 9 This is a perspective view of the wiring terminal block of an embodiment of this utility model.

[0028] Figure 10 This is a cross-sectional view of the dual power supply switching module in the dual-position configuration according to an embodiment of the present invention.

[0029] Figure 11 This is a cross-sectional view of the dual power supply switching module in the normal power supply closed position according to an embodiment of the present invention.

[0030] Figure 12 This is a cross-sectional view of the dual power supply switching module in the standby power supply closed position according to an embodiment of the present invention. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. The accompanying drawings are for illustrative purposes only, representing schematic diagrams only, not actual object drawings, and should not be construed as limiting this patent. To better illustrate the embodiments of this utility model, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual product dimensions. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0032] Combined with appendix Figure 1 To be continued Figure 12This utility model provides a dual power supply switch, comprising two sets of dual power supply switching modules 10. Each dual power supply switching module 10 includes a housing 1 and a handle 2 rotatably connected to the housing 1. The housing 1 has an inlet terminal 11 and an outlet terminal 12 on its two sides. The inlet terminal 11 is connected to a normal power inlet terminal 111 and a backup power inlet terminal 112. The outlet terminal 12 is connected to an outlet terminal 121. A normal power terminal block 113 and a backup power terminal block 114 are connected to the normal power inlet terminal 111 and the backup power inlet terminal 112, respectively. An outlet terminal block 122 is connected to the outlet terminal 121. The inner cavity of the housing 1 is connected to a normal power switching assembly 3 and a backup power switching assembly 4. The normal power switching assembly 3 includes a normal power switching bracket 31 and a normal power movable contact 32 connected to the normal power switching bracket 31. The normal power switching bracket 31 is located near the handle 2. Each side of the switch assembly 3 is provided with a common trigger part 33. The backup switching assembly 4 includes a backup switching bracket 41 and a backup movable contact piece 42 connected to the backup switching bracket 41. The backup switching bracket 41 is provided with a backup trigger part 43 on the side near the handle 2. The handle 2 is provided with a first switching block 21 and a second switching block 22 that are offset from the outer wall of the common trigger part 33 and the backup trigger part 43. The first switching block 21 is linked to the common trigger part 33 of the common switching assembly 3, so as to realize the contact and disconnection of the common movable contact piece 32 of the common switching assembly 3 with the common power terminal block 113 and the outgoing terminal block 122. The second switching block 22 is linked to the backup trigger part 43 of the backup switching assembly 4, so as to realize the contact and disconnection of the backup movable contact piece 42 of the backup switching assembly 4 with the backup power terminal block 114 and the outgoing terminal block 122.

[0033] The working principle of this dual power supply transfer switch is as follows: When the primary power supply needs to be connected to the power circuit, the handle is rotated manually or electrically to make the first switching block 21 act on the primary power supply trigger part 33 of the primary power supply switching component 3, thereby driving the primary power supply switching bracket 31 of the primary power supply switching component 3 to move, so that the primary power supply moving contact 32 of the primary power supply switching component 3 makes electrical contact with the primary power supply terminal block 113 and the outgoing terminal block 122. Due to the misalignment design of the first switching block 21 and the second switching block 22 at the position of the handle 2, the second switching block 22 does not act on the backup trigger part 43 of the backup switching component 4, thereby separating the backup moving contact 42 of the backup switching component 4 from the backup power supply terminal block 114 and the outgoing terminal block 122. At this time, the primary power supply... The power supply provides power to the circuit. When a backup power supply is needed to connect to the circuit, the handle is rotated manually or electrically to make the second switching block 22 act on the backup trigger part 43 of the backup switching component 4, thereby driving the switching bracket 41 of the backup switching component 4 to move, so that the backup moving contact 42 of the backup switching component 4 makes electrical contact with the backup power terminal block 114 and the outgoing terminal block 122. Due to the misalignment design of the first switching block 21 and the second switching block 22 at the position of the handle 2, the first switching block 21 does not act on the normal trigger part 33 of the normal switching component 3, so that the normal moving contact 32 of the normal switching component 3 is separated from the normal power terminal block 113 and the outgoing terminal block 122. At this time, the backup power supply provides power to the circuit.

[0034] In this embodiment, the dual power supply switch consists of two sets of dual power supply switching modules 10, which are suitable for single-phase dual power supply scenarios. In another embodiment, the dual power supply switch may also be provided with three or four sets of dual power supply switching modules 10 to be suitable for three-phase power supply scenarios.

[0035] In this embodiment, the common power input terminal 111 and the common power terminal block 113 can be independent components or integrated components; the backup power input terminal 112 and the backup power terminal block 114 can be independent components or integrated components; the output terminal 121 and the output terminal block 122 can be independent components or integrated components.

[0036] In this embodiment, as shown in the appendix Figure 5 As shown, the handle 2 is integrally formed, and the housing 1 is provided with a rotating shaft for the rotational connection of the handle 2.

[0037] In this embodiment, as shown in the appendix Figure 5 and appendix Figure 10 To be continued Figure 12As shown, the first switching block 21 and the second switching block 22 are not on the same plane. The first switching block 21 and the common trigger part 33 of the common switching component 3 are on the same working plane, and the second switching block 22 and the spare trigger part 43 of the spare switching component 4 are on the same working plane. The staggered design of the first switching block 21 and the second switching block 22 is the key to achieving interlocking. From a mechanical structure perspective, it ensures that in any operating position, only one switching block can press down its corresponding trigger part to turn on one power supply, while the other switching block is in the disconnected position. This fundamentally eliminates the possibility that the moving contacts of the common power supply and the spare power supply will simultaneously contact the outgoing terminal block, thereby effectively preventing short circuit accidents of the two power supplies due to misoperation, and the reliability is very high.

[0038] In this embodiment, as shown in the appendix Figure 5 and appendix Figure 10 To be continued Figure 12 As shown, the first switching block 21, facing the common trigger part 33 of the common switching component 3, sequentially includes a first breaking recess 211, a first guide part 212, and a first closing recess 213; the second switching block 22, facing the spare trigger part 43 of the spare switching component 4, sequentially includes a second breaking recess 221, a second guide part 222, and a second closing recess 223; when the dual power supply switching switch is in the common power supply closed position, the common trigger part 43 of the common switching component 4 is connected in the first closing recess 213, and the common moving contact 32 of the common switching component 3 is electrically connected to the common power supply terminal block 113 and the outgoing terminal block 122 respectively; when the dual power supply switching switch is in the spare power supply closed position, the... The backup trigger part 43 of the backup switching component 4 is connected in the second closed recess 223, and the backup moving contact 42 of the backup switching component 4 is electrically connected to the backup power terminal block 114 and the outgoing terminal block 122 respectively. When the dual power switching switch is in the dual open position, the normal trigger part 33 of the normal switching component 3 is connected in the first disconnect recess 211, and the backup trigger part 43 of the backup switching component 4 is connected in the second disconnect recess 221. The normal moving contact 32 of the normal switching component 3 is separated from the normal power terminal block 113 and the outgoing terminal block 122 respectively, and the backup moving contact 42 of the backup switching component 4 is separated from the backup power terminal block 114 and the outgoing terminal block 122 respectively.

[0039] In this embodiment, the structure of the handle 2 described above is adopted, so that the dual power switching module 10 has three working states: normal power supply access state, backup power supply access state, and no power supply access state.

[0040] In this embodiment, as shown in the appendix Figure 6 and attached Figure 7 As shown, the commonly used switching bracket 31 has a commonly used moving contact slot 311, and a commonly used moving contact spring 34 is provided in the commonly used moving contact slot 311. The commonly used moving contact 32 is connected in the commonly used moving contact slot 311. One end of the commonly used moving contact spring 34 abuts against the inner wall of the commonly used moving contact slot 311, and the other end of the commonly used moving contact spring 34 abuts against the commonly used moving contact 32. The spare switching bracket 41 has a spare moving contact slot 411, and a spare moving contact spring 44 is provided in the spare moving contact slot 411. The spare moving contact 42 is connected in the spare moving contact slot 411. One end of the spare moving contact spring 44 abuts against the inner wall of the spare moving contact slot 411, and the other end of the spare moving contact spring 44 abuts against the spare moving contact 42.

[0041] In this embodiment, the function of the commonly used moving contact spring 34 and the spare moving contact spring 44 is to provide overtravel force when the commonly used moving contact 32 and the spare moving contact 42 are electrically bridged, so as to ensure the reliability of the electrical connection.

[0042] In this embodiment, as shown in the appendix Figure 6 and attached Figure 7 As shown, the inner wall of the commonly used moving contact slot 311 is provided with a commonly used positioning post 312 opposite to the commonly used moving contact spring 34. The commonly used moving contact 32 is provided with commonly used positioning grooves 321 on both sides. The side wall of the commonly used moving contact slot 311 is provided with a commonly used positioning protrusion 313, which is connected to the commonly used positioning groove 321. The inner wall of the spare moving contact slot 411 is provided with a spare positioning post 412 opposite to the spare moving contact spring 44. The spare moving contact 42 is provided with a spare positioning groove 421 on both sides. The side wall of the spare moving contact slot 411 is provided with a spare positioning protrusion 413, which is connected to the spare positioning groove 421.

[0043] In this embodiment, the commonly used positioning post 312 and the spare positioning post 412 are used for positioning the commonly used moving contact spring 34 and the spare moving contact spring 44.

[0044] In this embodiment, the cooperation of the commonly used positioning protrusion 313 and the commonly used positioning groove 321 enables the commonly used moving contact piece 32 to be positioned on the commonly used switching bracket 31; the cooperation of the spare positioning protrusion 413 and the spare positioning groove 421 enables the spare moving contact piece 42 to be positioned on the spare switching bracket 41.

[0045] In this embodiment, as shown in the appendix Figure 7As shown, the bottom of the commonly used switching bracket 31 is provided with a commonly used bracket reset slot 314, and a commonly used bracket reset spring 35 is provided inside the commonly used bracket reset slot 314. One end of the commonly used bracket reset spring 35 abuts against the inner wall of the commonly used bracket reset slot 314, and the other end of the commonly used bracket reset spring 35 abuts against the housing 1. The bottom of the spare switching bracket 41 is provided with a spare bracket reset slot 414, and a spare bracket reset spring 45 is provided inside the spare bracket reset slot 414. One end of the spare bracket reset spring 45 abuts against the inner wall of the spare bracket reset slot 414, and the other end of the spare bracket reset spring 45 abuts against the housing 1.

[0046] In this embodiment, the common support reset spring 35 and the spare support reset spring 45 are used to reset the common switching support 31 and the spare switching support 41, respectively.

[0047] In this embodiment, as shown in the appendix Figure 3 and attached Figure 8 As shown, the housing 1 includes a partition plate 13 and side covers 14 located on both sides of the partition plate 13. Both sides of the partition plate 13 are provided with a first guide groove 131, and the inner wall of the side cover 14 is provided with a second guide groove 141. The two sides of the commonly used switching bracket 31 / the spare switching bracket 41 are respectively connected to the second guide groove 141 of the side cover 14 and the first guide groove 131 of the partition plate 13.

[0048] In this embodiment, as shown in the appendix Figure 3 and attached Figure 8 As shown, the partition plate 13 has a first slot 132, and the side cover 14 has a second slot 142. The common power supply terminal block 113, the backup power supply terminal block 114 and the outgoing terminal block 122 are respectively connected to the first slot 132 and the second slot 142.

[0049] In this embodiment, as shown in the appendix Figure 9 As shown, the outgoing terminal block 122 includes an outgoing connection end 123, a first outgoing mating end 124, and a second outgoing mating end 125. The outgoing connection end 123 is connected to the outgoing terminal 121. The first outgoing mating end 124 and the second outgoing mating end 125 are respectively linked to the commonly used moving contact piece 32 and the spare moving contact piece 42.

[0050] In this embodiment, both ends of the commonly used moving contact 32 and the spare moving contact 42 are provided with moving contacts, and the commonly used power supply terminal block 113, the spare power supply terminal block 114 and the outgoing terminal block 122 are all provided with stationary contacts.

[0051] In this embodiment, the handles 2 of the dual power switching module 10 are connected by an interlocking member 5 to achieve synchronous switching of the dual power switching module 10.

[0052] The core of this utility model's dual power transfer switch operating mechanism is to trigger the corresponding triggering parts on the normal and standby switching brackets by using the two staggered protrusions on the handle as first and second switching blocks. This, in turn, drives the moving contact pieces on the normal and standby switching brackets to move, thereby enabling the connection of the normal or standby power supply. This greatly simplifies the number of parts and structure of existing dual power transfer switch operating mechanisms, while also reducing the requirements for worker skills and tooling fixtures. This directly improves production efficiency and product consistency, and reduces production costs.

[0053] In this technical solution, the rotational motion of the handle is directly converted into the linear motion of the switching bracket through the protrusion. The transmission chain is short, the mechanical efficiency is high, and the operating force acts more directly on the opening and closing of the contacts, resulting in faster and more reliable operation. The simplified linear transmission structure saves more space than the complex linkage mechanism, laying a solid foundation for the miniaturization of the entire product. It perfectly matches the development trend of the low-voltage electrical appliance industry. At the same time, the dual power supply switching switch can easily connect or combine multiple modules according to the current capacity or number of poles required.

[0054] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating this utility model, and are not intended to limit the implementation of this utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model, or direct / indirect applications in other related technical fields, should be included within the scope of protection of the claims of this utility model.

Claims

1. A dual-power transfer switch, comprising at least two sets of dual-power transfer modules, characterized in that, The dual power switching module includes a housing and a handle rotatably connected to the housing. The housing has an inlet and an outlet on each side. The inlet is connected to a main power inlet terminal and a backup power inlet terminal, and the outlet is connected to an outlet terminal. A main power connector and a backup power connector are connected to the main power inlet terminal and the backup power inlet terminal, respectively. An outlet connector is connected to the outlet terminal. The housing's inner cavity houses a main power switching assembly and a backup power switching assembly. Both the main power switching assembly and the backup power switching assembly include a switching bracket and a handle connected to the main power inlet. The switching bracket has a movable contact piece, and the switching bracket is provided with a trigger part on the side near the handle. The outer wall of the handle near the trigger part is provided with a first switching block and a second switching block that are offset from each other. The first switching block is linked to the trigger part of the commonly used switching component to realize the contact and disconnection of the movable contact piece of the commonly used switching component with the commonly used power terminal block and the outgoing terminal block. The second switching block is linked to the trigger part of the standby switching component to realize the contact and disconnection of the movable contact piece of the standby switching component with the standby power terminal block and the outgoing terminal block.

2. The dual power supply switching switch according to claim 1, characterized in that, The first switching block and the second switching block are not on the same plane. The first switching block and the trigger part of the commonly used switching component are on the same working plane, and the second switching block and the trigger part of the spare switching component are on the same working plane.

3. A dual-power switching switch according to claim 2, characterized in that, The first switching block, facing the trigger portion of the commonly used switching component, sequentially includes a first breaking recess, a first guide portion, and a first closing recess on one side; the second switching block, facing the trigger portion of the standby switching component, sequentially includes a second breaking recess, a second guide portion, and a second closing recess on one side. When the dual power supply switching switch is in the commonly used power supply closed position, the trigger portion of the commonly used switching component is connected to the first closing recess, and the moving contact of the commonly used switching component is electrically connected to the commonly used power supply terminal block and the outgoing terminal block, respectively. When the dual power supply switching switch is in the standby power supply closed position... The trigger part of the backup switching component is connected to the second closed recess, and the moving contact of the backup switching component is electrically connected to the backup power terminal block and the outgoing terminal block respectively. When the dual power switching switch is in the dual open position, the trigger part of the normal switching component is connected to the first disconnecting recess, the trigger part of the backup switching component is connected to the second disconnecting recess, the moving contact of the normal switching component is separated from the normal power terminal block and the outgoing terminal block respectively, and the moving contact of the backup switching component is separated from the backup power terminal block and the outgoing terminal block respectively.

4. A dual-power switching switch according to any one of claims 1 to 3, characterized in that, The switching bracket has a movable contact slot, and a movable contact spring is provided in the movable contact slot. The movable contact is connected in the movable contact slot, one end of the movable contact spring abuts against the inner wall of the movable contact slot, and the other end of the movable contact spring abuts against the movable contact.

5. A dual-power switching switch according to claim 4, characterized in that, The inner wall of the movable contact slot is provided with a positioning post opposite the position of the movable contact spring. Positioning grooves are provided on both sides of the movable contact. Positioning protrusions are provided on the side wall of the movable contact slot, and the positioning protrusions are connected in the positioning grooves.

6. A dual-power switching switch according to any one of claims 1 to 3, characterized in that, The bottom of the switching bracket is provided with a bracket reset slot, and a bracket reset spring is provided inside the bracket reset slot. One end of the bracket reset spring abuts against the inner wall of the bracket reset slot, and the other end of the bracket reset spring abuts against the housing.

7. A dual-power transfer switch according to any one of claims 1 to 3, characterized in that, The housing includes a partition plate and side covers located on both sides of the partition plate. The inner wall of the side covers and both sides of the partition plate are provided with guide grooves. The switching bracket is connected to the guide grooves of the side covers and the guide grooves of the partition plate, respectively.

8. A dual-power transfer switch according to claim 7, characterized in that, Both the partition plate and the side cover have slots, and the main power supply terminal block, the backup power supply terminal block and the outgoing terminal block are respectively connected to the slots.

9. A dual-power transfer switch according to any one of claims 1 to 3, characterized in that, The outgoing terminal block includes an outgoing connection end, a first outgoing mating end, and a second outgoing mating end. The outgoing connection end is connected to the outgoing terminal. The first outgoing mating end and the second outgoing mating end are respectively linked to the moving contact of the commonly used switching component and the spare switching component.

10. A dual-power switching switch according to any one of claims 1 to 3, characterized in that, The handles of the dual power switching module are connected by interlocking components.

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