A dual power switch opening tripping mechanism

Abstract

The application relates to a dual-power switch opening tripping mechanism, which comprises a shell, a mounting back plate is arranged in the shell, two power source rotating shafts are rotationally connected to the mounting back plate, a clamping plate corresponding to the two power source rotating shafts is rotationally connected to the mounting back plate, the end of the clamping plate is provided with a hook block, a hook disc is sleeved on the power source rotating shaft and is hooked with the hook block, the two clamping plates are connected through elastic pieces, the elastic pieces push the two hook blocks to be away from each other to hook the hook disc, a driving assembly and a transmission assembly are arranged on the mounting back plate, and the driving assembly drives the hook block to be separated from the hook disc through the transmission assembly. The application realizes integrated control of the opening actions of the normal power source and the standby power source.

Description

Technical Field

[0001] This application relates to the field of power switch technology, and in particular to a tripping mechanism for a dual power switch. Background Technology

[0002] A dual power switch is a common low-voltage electrical appliance that enables rapid switching between a primary power source and a backup power source. When the primary power source experiences a power outage, undervoltage, or overvoltage, the dual power switch quickly switches the load circuit to the backup power source, preventing equipment shutdown or malfunction due to power interruption.

[0003] To ensure that the primary and backup power supplies are not simultaneously switched on during the switching process, thus preventing safety accidents such as short circuits, dual power switches need to be equipped with a tripping mechanism. Currently, dual power switches on the market typically have separate tripping mechanisms designed for the primary and backup power supplies. However, two independent tripping mechanisms require a large number of additional parts, resulting in a complex overall structure of the dual power switch, requiring more installation space, and hindering the compact design and installation of the equipment. In addition, if there are coordination problems between the two tripping mechanisms, or if a single tripping excitation coil or transmission component fails, it may lead to delayed tripping, incomplete tripping, or even tripping failure, thereby affecting the power supply reliability of the dual power switch and failing to effectively guarantee the safe and stable operation of the load equipment.

[0004] Regarding the aforementioned technologies, the inventors believe that dual power switches employing two independent tripping mechanisms have significant drawbacks, including excessive installation space occupation, complex structure, high cost, and difficulty in controlling the coordination between the two mechanisms, which affects the power supply reliability of the dual power switch. Utility Model Content

[0005] In order to achieve integrated control of the tripping action of the main power supply and the backup power supply, this application provides a tripping mechanism for a dual power supply switch.

[0006] The tripping mechanism of a dual-power switch provided in this application adopts the following technical solution: A tripping mechanism for a dual-power switch includes a housing, an internal mounting backplate, two power shafts rotatably connected to the mounting backplate, and a buckle plate corresponding to each of the two power shafts rotatably connected to the mounting backplate. Each buckle plate has a hook block at its end, and a hook disc is fitted onto each power shaft to engage with the hook block. The two buckles are connected by an elastic element, which pushes the two hook blocks away from each other to engage with the hook disc. The mounting backplate includes a drive assembly and a transmission assembly, the drive assembly driving the hook blocks to disengage from the hook disc via the transmission assembly.

[0007] By adopting the above technical solution, when the circuit is closed, one of the power shafts rotates and drives the hook plate to rotate synchronously. The hook block hooks with the hook plate under the elastic force of the elastic element, realizing the stable locking of the closed state of the power shaft. When it is necessary to open the circuit, the drive component drives the two buckles to rotate towards each other through the transmission component. The buckles drive the two hook blocks to move closer synchronously. At this time, the hook block hooked with the hook plate disengages from the hook plate and releases the lock on the power shaft. The power shaft can then reset to realize the opening. Subsequently, the drive component is deactivated, and the two hook plates reset under the action of the elastic element, ready for the next closing action. In this way, a single drive component and transmission component can realize the synchronous or individual opening control of two power supplies, without the need to set up two independent opening mechanisms for two power supplies, realizing the integrated control of the opening action of the main power supply and the backup power supply.

[0008] Optionally, the transmission assembly includes a rotating pin rotatably connected to the mounting back plate. One end of the rotating pin is fitted with a push block, and the other end is fitted with a connecting frame. The driving assembly drives the connecting frame to rotate around the rotating pin. When the push block rotates from a vertical position to a horizontal position, the push block pushes the hook block to disengage from the hook disc.

[0009] By adopting the above technical solution, when the circuit is closed, the push block remains in a vertical position, with its two ends maintaining a distance from the buckle plate, so as not to interfere with the buckle plate's operation. The hook block can be stably hooked with the hook plate under the elastic force of the elastic element, reliably maintaining the closed state of the power shaft. When the circuit is opened, the drive assembly drives the connecting frame to rotate the push block on the rotating pin. The push block rotates from the vertical position to the horizontal position. At this time, the two ends of the push block continuously approach the buckle plate and push the two buckle plates away from each other, so that the hook block synchronously disengages from the hook plate, quickly releasing the lock on the power shaft to achieve the opening of the circuit.

[0010] Optionally, the connecting frame is provided with a movable pin and a connecting arm, and the driving component includes a manual component and an electric component. The electric component drives the movable pin to move in the horizontal direction to achieve rotation of the connecting frame, and the manual component drives the connecting arm to move in the vertical direction to achieve rotation of the connecting frame.

[0011] By adopting the above technical solution, during electric operation, the electric control component drives the moving pin to move horizontally to rotate the connecting frame; during manual operation, the manual control component drives the connecting arm to move vertically to rotate the connecting frame. The electric and manual control components achieve functional compatibility between electric and manual tripping, meeting the needs of automated control under normal working conditions and manual operation in emergency scenarios such as power outages, improving the adaptability of the tripping mechanism under various working conditions. Moreover, the two transmit power through the same connecting frame and rotating pin, eliminating the need for separate transmission structures for electric and manual operation.

[0012] Optionally, the electric control assembly includes a mounting cylinder disposed on the mounting back plate. One end of the mounting cylinder is provided with a fixed electromagnet, and the other end is slidably connected to a movable magnet. The end of the movable magnet is provided with a push column that slides with the mounting cylinder. A return spring is sleeved on the outer surface of the push column. A connecting plate is provided at the movable end of the push column. A waist-shaped groove is provided on the connecting plate that slides with the movable pin.

[0013] By adopting the above technical solution, when electric tripping is required, the fixed electromagnet is energized to attract the moving magnet. When the moving magnet moves, it pulls the push column and the connecting plate to slide synchronously towards the fixed electromagnet. At this time, the reset spring is compressed. Since the moving pin slides through the waist-shaped groove, the movement of the connecting plate applies a horizontal thrust to the moving pin through the waist-shaped groove. This thrust drives the connecting frame to rotate towards the mounting cylinder, thereby causing the rotating pin to drive the push block to rotate. After the tripping is completed, the fixed electromagnet is de-energized and the electromagnetic force disappears. The reset spring releases its elastic force to push the moving magnet, the push column, and the connecting plate to slide back to their original positions. At this time, the moving pin is reset in the waist-shaped groove with the connecting plate. The connecting frame and the rotating pin synchronously return to their initial state, and the push block returns to its vertical state, preparing for the next closing or tripping action.

[0014] Optionally, the housing surface is provided with a sliding groove, the manual component includes a button slidably connected in the sliding groove, the end of the button is provided with an abutment post, the end of the abutment post is provided facing the connecting arm, and a top support spring is provided in the bottom wall of the sliding groove, the elastic force of the top support spring drives the button to move upward.

[0015] By adopting the above technical solution, when the circuit breaker is tripped in a power outage environment, the worker presses the button to make it move downward against the elastic force of the top support spring. The button drives the abutment column to move downward and abut against the connecting arm, which in turn drives the connecting frame and the rotating pin to rotate, so as to realize the hook block disengagement and tripping, ensuring the tripping operation in emergency situations. After the tripping is completed, the button is released, the top support spring releases its elastic force to drive the button to move upward and reset, thereby driving the abutment column back to the initial position. At this time, the rotating pin can be reset under the elastic force of the reset spring.

[0016] Optionally, sheet metal parts are provided on both opposite sides of the mounting cylinder. The sheet metal parts are detachably connected to the mounting back plate through multiple connecting components. The end of the movable pin is threaded with a locking stud, and the nut end of the locking stud abuts against the surface of the connecting plate.

[0017] By adopting the above technical solution, when the electric control component needs to be replaced or maintained, the worker first unscrews the locking stud to disengage it from the moving pin. At this time, the connecting plate can slide off the moving pin to separate the electric control component and the transmission component. Then, the worker removes the sheet metal parts and mounting cylinder from the mounting back plate through the connecting component, so that the electric control component can be replaced or repaired separately without disassembling other parts of the entire tripping mechanism. This simplifies the maintenance process and reduces the steps of disassembly and reassembly.

[0018] Optionally, the connecting assembly includes a threaded post disposed on the sheet metal part, and the mounting back plate has a mounting hole for the threaded post to pass through. A locking nut is threaded onto the outer surface of the threaded post, and the locking nut abuts against the outer surface of the mounting back plate.

[0019] By adopting the above technical solution, when it is necessary to disassemble the sheet metal parts, the worker only needs to loosen the locking nut and disengage it from the threaded post to pull the threaded post out of the mounting hole, thereby achieving quick separation of the sheet metal parts from the mounting back plate; after maintenance, the threaded post is inserted through the mounting hole and the locking nut is tightened to quickly fix the sheet metal parts and the mounting back plate, thus completing the reset and installation of the electric control assembly.

[0020] Optionally, the connecting assembly includes a plug-in post disposed on the sheet metal part, and the mounting back plate is provided with a plug-in groove that engages with the plug-in post. The end of the plug-in post away from the sheet metal part is provided with a plurality of elastic hooks along the circumferential direction. When the elastic hooks are in their natural state, they extend out of the plug-in groove and abut against the outer surface of the mounting back plate. The outer surface of the elastic hooks is provided with a guide cone surface.

[0021] By adopting the above technical solution, when installing the electric control assembly, the plug-in post is slid into the plug-in slot along the guide cone surface. The guide cone surface guides the plug-in post to be aligned and reduces insertion resistance, making the insertion process smoother. During insertion, the elastic hook is squeezed and contracted by the inner wall of the plug-in slot. After full insertion, the elastic hook naturally opens under its own elastic force, extends out of the plug-in slot and abuts against the outer surface of the mounting back plate, realizing quick snap-fit ​​fixing of the sheet metal part and the mounting back plate. Installation can be completed without the aid of tools, improving assembly efficiency. When it is necessary to disassemble the electric control assembly for maintenance, simply press the elastic hook to retract it into the plug-in slot, and the plug-in post can be directly pulled out, realizing quick separation of the sheet metal part and the mounting back plate.

[0022] In summary, this application includes at least one of the following beneficial technical effects: This application, by setting up a drive component and a transmission component, when it is necessary to open the circuit breaker, the drive component drives the two latch plates to rotate in a direction that moves closer to each other through the transmission component. The latch plates drive the two hook blocks to move closer synchronously. At this time, the hook blocks that are hooked with the hook plate disengage from the hook plate and release the lock on the power shaft. The power shaft can then be reset to realize the opening of the circuit breaker. Subsequently, the drive component is deactivated, and the two hook plates are reset under the action of the elastic element, ready for the next closing action. In this way, a single drive component and transmission component can realize the synchronous or individual opening control of two power supplies, without the need to set up two independent opening mechanisms for two power supplies, realizing integrated control of the opening action of the main power supply and the backup power supply. This application achieves functional compatibility between electric and manual tripping by setting up electric and manual operating components, meeting the needs of automatic control under normal working conditions and manual operation in emergency scenarios such as power outages, improving the adaptability of the tripping mechanism under various working conditions, and the two transmit power through the same connecting frame and rotating pin, without the need to set up independent transmission structures for electric and manual operation. This application, by setting up a connecting component, allows workers to first unscrew the locking stud to disengage it from the moving pin when the electric control component needs replacement or maintenance. At this point, the connecting plate can slide off the moving pin to separate the electric control component and the transmission component. Subsequently, workers can remove the sheet metal parts and mounting cylinder from the mounting back plate through the connecting component, allowing the electric control component to be replaced or repaired separately without disassembling other parts of the entire tripping mechanism. This simplifies the maintenance process and reduces the steps of disassembly and reassembly. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of this application.

[0024] Figure 2 This is a schematic diagram of the structure of the buckle plate in Embodiment 1 of this application.

[0025] Figure 3 This is a schematic diagram of the transmission component and drive component in Embodiment 1 of this application.

[0026] Figure 4 This is a schematic diagram of the connecting component in Embodiment 2 of this application.

[0027] Explanation of reference numerals in the attached drawings: 01, power shaft; 1, housing; 101, sliding groove; 2, mounting back plate; 21, mounting hole; 22, insertion groove; 3, buckle plate; 31, hook block; 32, hook disc; 33, elastic element; 4, transmission assembly; 41, rotating pin; 42, push block; 43, connecting frame; 44, moving pin; 441, locking stud; 45, connecting arm; 5, drive assembly; 51, electric control assembly; 511, mounting cylinder; 512, fixed electromagnet; 513, moving magnet; 514, push column; 515, return spring; 516, connecting plate; 5161, waist-shaped groove; 52, manual control assembly; 521, button; 522, abutting column; 523, top support spring; 6, sheet metal part; 7, connecting assembly; 71, threaded column; 72, locking nut; 73, insertion column; 74, elastic hook. Detailed Implementation

[0028] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0029] This application discloses a tripping mechanism for a dual-power switch. Example

[0030] Reference Figure 1 A tripping mechanism for a dual-power switch includes a housing 1, with a mounting back plate 2 fixedly connected inside the housing 1. Two power shafts 01 are rotatably connected to the mounting back plate 2, corresponding to the main power supply and the backup power supply. The on / off state of the corresponding power circuit is controlled by the forward or reverse rotation of the power shafts 01, thereby realizing the tripping and closing functions.

[0031] Reference Figure 1 and Figure 2 The mounting back plate 2 is rotatably connected to the side of the power shaft 01, which is one-to-one with the two power shafts 01. The bottom end of each mounting plate 3 is integrally formed with a hook block 31. The power shaft 01 is coaxially fitted with a hook plate 32 that hooks and cooperates with the hook block 31. In this embodiment, the cross-section of the power shaft 01 is hexagonal. When the power shaft 01 rotates, it drives the hook plate 32 to rotate synchronously. The ends of the two mounting plates 3 near the hook block 31 are connected by an elastic element 33. In this embodiment, the elastic element 33 is an elastic steel wire. The elastic force of the elastic element 33 pushes the two hook blocks 31 away from each other in preparation for hooking and cooperating with the hook plate 32.

[0032] Reference Figure 2 and Figure 3The mounting back plate 2 is provided with a transmission assembly 4 and a drive assembly 5 on the end face away from the buckle plate 3. Specifically, the transmission assembly 4 includes a rotating pin 41 rotatably connected to the mounting back plate 2. The rotating pin 41 is located between the two buckles 3 and on the side away from the hook block 31. A push block 42 is fixedly sleeved on the end of the rotating pin 41 near the buckle plate 3. The two ends of the push block 42 are symmetrical about the axis of the rotating pin 41. A connecting frame 43 is fixedly sleeved on the end face of the rotating pin 41 away from the buckle plate 3. The drive assembly 5 drives the connecting frame 43 to rotate around the rotating pin 41. When the push block 42 rotates from the vertical position to the horizontal position, the push block 42 pushes the hook block 31 to disengage from the hook plate 32.

[0033] In the initial state, the push block 42 is kept vertical and its two ends are kept at a distance from the buckle plate 3. At this time, the hook block 31 on the buckle plate 3 approaches the hook plate 32 under the action of the elastic element 33. When closing the circuit, one of the power shafts 01 rotates in the forward direction and drives the hook plate 32 to rotate synchronously. Under the elastic force of the elastic element 33, the hook block 31 automatically hooks with the hook plate 32 that has rotated to the closing position, so as to achieve stable locking of the closing state of the power shaft 01. When tripping is required, the drive assembly 5 drives the connecting frame 43 to rotate the push block 42 on the rotating pin 41. At this time, the push block 42 rotates from a vertical position to a horizontal position. The two ends of the push block 42 continuously approach the buckle plate 3 and push the two buckle plates 3 away from each other. The buckle plate 3 drives the two hook blocks 31 to approach synchronously. At this time, the hook block 31 hooked with the hook plate 32 disengages from the hook plate 32 and releases the lock on the power shaft 01. The power shaft 01 can then rotate in the opposite direction to achieve tripping. Subsequently, the drive assembly 5 is deactivated, and the two hook plates 32 are reset under the action of the elastic element 33, ready for the next closing action. The setting of the drive assembly 5 and the transmission assembly 4 allows a single drive assembly 5 and transmission assembly 4 to achieve synchronous or individual tripping control of two power supplies, without the need to set up two independent tripping mechanisms for the two power supplies, realizing integrated control of the tripping action of the main power supply and the backup power supply.

[0034] Reference Figure 2 and Figure 3 The drive assembly 5 includes an electric control assembly 51 and a manual control assembly 52. ​​Under normal operating conditions, the electric control assembly 51 drives the connecting frame 43 to rotate, thereby achieving the tripping action. Under power failure conditions, the manual control assembly 52 drives the connecting frame 43 to rotate, thereby achieving the tripping action. This improves the adaptability of the tripping mechanism under various operating conditions.

[0035] Reference Figure 2 and Figure 3The electric control assembly 51 includes a mounting cylinder 511 detachably mounted on the mounting back plate 2. One end of the mounting cylinder 511 is fixedly connected to a fixed electromagnet 512, and the other end is slidably connected to a movable magnet 513. The end of the movable magnet 513 away from the fixed electromagnet 512 is fixedly connected to a push column 514. The push column 514 extends out of the mounting cylinder 511 and a return spring 515 is sleeved on its outer surface. The elastic force of the return spring 515 causes the push column 514 to move toward the fixed electromagnet 512. The end of the push column 514 away from the movable magnet 513 is fixedly connected to a connecting plate 516, which is L-shaped.

[0036] Reference Figure 2 and Figure 3 A movable pin 44 is fixedly connected to the end of the connecting bracket 43 near the connecting plate 516. The connecting plate 516 has a waist-shaped groove 5161 that slides with the movable pin 44. The end of the movable pin 44 extending out of the waist-shaped groove 5161 is threadedly connected to a locking stud 441. The nut end of the locking stud 441 abuts against the surface of the connecting plate 516, thus realizing the connection between the movable pin 44 and the connecting plate 516.

[0037] When electric tripping is required, the fixed electromagnet 512 is energized to attract the moving magnet 513. As the moving magnet 513 moves, it pulls the push column 514 and the connecting plate 516 to slide synchronously toward the fixed electromagnet 512. At this time, the reset spring 515 is compressed. Since the moving pin 44 slides through the waist-shaped groove 5161, the movement of the connecting plate 516 applies a horizontal thrust to the moving pin 44 through the waist-shaped groove 5161. This thrust drives the connecting frame 43 to rotate toward the mounting cylinder 511, thereby causing the rotating pin 41 to drive the push block 42 to rotate. After the tripping is completed, the fixed electromagnet 512 is de-energized and the electromagnetic force disappears. The reset spring 515 releases its elastic force to push the moving magnet 513, the push column 514, and the connecting plate 516 to slide back to their original positions. At this time, the moving pin 44 resets in the waist-shaped groove 5161 along with the connecting plate 516. The connecting frame 43 and the rotating pin 41 synchronously rotate back to their initial positions, and the push block 42 returns to its vertical position, preparing for the next closing or tripping action.

[0038] Reference Figure 2 and Figure 3 The manual control component 52 includes a button 521. A sliding groove 101 is provided on the housing 1 to slide and engage with the button 521. The sliding groove 101 is T-shaped and vertically arranged. An abutment post 522 is fixedly connected to the bottom end of the button 521. The end of the abutment post 522 extends into the housing 1. A connecting arm 45 is fixedly connected to the end of the connecting bracket 43 near the abutment post 522. The connecting arm 45 is L-shaped. A top support spring 523 is fixedly connected to the bottom wall of the sliding groove 101. The other end of the top support spring 523 is fixedly connected to the bottom of the button 521. The elastic force of the top support spring 523 drives the button 521 to move upward.

[0039] When the circuit breaker is tripped in a power outage environment, the worker presses button 521 to move it downward against the elastic force of the top support spring 523. Button 521 drives the abutment post 522 to move downward and abut against the connecting arm 45, which in turn drives the connecting frame 43 and the rotating pin 41 to rotate, so as to realize the hook block 31 to disengage and trip the circuit breaker, ensuring the tripping operation in an emergency. After the circuit breaker is tripped, button 521 is released, and the top support spring 523 releases its elastic force to drive button 521 to move upward and reset, thereby driving the abutment post 522 back to the initial position. At this time, the rotating pin 41 can be reset under the elastic force of the reset spring 515.

[0040] Reference Figure 2 and Figure 3 To facilitate the maintenance and replacement of the electric control component 51, sheet metal parts 6 are fixedly connected to opposite sides of the mounting cylinder 511. Each sheet metal part 6 is detachably connected to the mounting back plate 2 via two connecting components 7. The connecting components 7 include threaded posts 71 fixedly connected to the sheet metal parts 6. The mounting back plate 2 has mounting holes 21 for the threaded posts 71 to pass through. A locking nut 72 is threaded onto the outer surface of the threaded post 71 and abuts against the outer surface of the mounting back plate 2.

[0041] When the electric control assembly 51 needs to be replaced or maintained, the worker first unscrews the locking stud 441 to disengage it from the moving pin 44. At this time, the connecting plate 516 can slide off the moving pin 44 to separate the electric control assembly 51 and the transmission assembly 4. Then, the worker loosens the locking nut 72 and disengages it from the threaded post 71, so that the threaded post 71 can be pulled out from the mounting hole 21, achieving quick separation of the sheet metal part 6 from the mounting back plate 2. After maintenance, the worker inserts the threaded post 71 into the mounting hole 21. At this time, the moving pin 44 is inserted into the sliding groove 101. Finally, the worker tightens the locking nut 72 and the locking stud 441 to connect the electric control assembly 51 and the transmission assembly 4.

[0042] The implementation principle of the tripping mechanism of a dual power switch in this application embodiment is as follows: In the initial state, the push block 42 is kept vertical and the two ends are kept at a distance from the buckle plate 3. At this time, the hook block 31 on the buckle plate 3 approaches the hook plate 32 under the action of the elastic element 33. When closing the circuit, one of the power shafts 01 rotates in the forward direction and drives the hook plate 32 to rotate synchronously. Under the elastic force of the elastic element 33, the hook block 31 automatically hooks with the hook plate 32 that has rotated to the closing position, thereby achieving stable locking of the closing state of the power shaft 01. When tripping is required, the drive assembly 5 drives the connecting frame 43 to rotate the push block 42 on the rotating pin 41. At this time, the push block 42 rotates from a vertical position to a horizontal position. The two ends of the push block 42 continuously approach the buckle plate 3 and push the two buckle plates 3 away from each other. The buckle plate 3 drives the two hook blocks 31 to approach synchronously. At this time, the hook block 31 hooked with the hook plate 32 disengages from the hook plate 32 and releases the lock on the power shaft 01. The power shaft 01 can then rotate in the opposite direction to achieve tripping. Subsequently, the drive assembly 5 is deactivated, and the two hook plates 32 are reset under the action of the elastic element 33, ready for the next closing action. The setting of the drive assembly 5 and the transmission assembly 4 allows a single drive assembly 5 and transmission assembly 4 to achieve synchronous or individual tripping control of two power supplies, without the need to set up two independent tripping mechanisms for the two power supplies, realizing integrated control of the tripping action of the main power supply and the backup power supply. Example

[0043] Reference Figure 4 The difference between this embodiment and Embodiment 1 is that the connecting component 7 includes a plug-in post 73 fixedly connected to the end face of the sheet metal part 6. The mounting back plate 2 has a plug-in groove 22 that engages with the plug-in post 73. The end of the plug-in post 73 away from the sheet metal part 6 is evenly connected with a plurality of elastic hooks 74 in the circumferential direction. In this embodiment, there are two elastic hooks 74. The two elastic hooks 74 are respectively arranged on the radial sides of the plug-in post 73. The outer surface of the elastic hook 74 is provided with a guide cone surface that guides the plug-in post 73 to insert into the plug-in groove 22. The guide cone surface gradually tilts towards the axis of the plug-in post 73 in the direction away from the plug-in post 73. When the elastic hook 74 is in its natural state, the tail of the elastic hook 74 extends out of the plug-in groove 22 and abuts against the outside of the mounting back plate 2.

[0044] The implementation principle of Example 2 is as follows: When installing the electric control assembly 51, the plug 73 is slid into the plug groove 22 along the guide cone surface. The guide cone surface guides the plug 73 to be aligned and reduces the insertion resistance, making the insertion process smoother. During the insertion process, the elastic hook 74 is squeezed and contracted by the inner wall of the plug groove 22. After it is fully inserted, the elastic hook 74 naturally opens under its own elastic force, extends out of the plug groove 22 and abuts against the outer surface of the mounting back plate 2, realizing the quick snap-fit ​​fixation of the sheet metal part 6 and the mounting back plate 2. The installation can be completed without the aid of tools, improving the assembly efficiency. When it is necessary to disassemble the electric control assembly 51 for maintenance, simply press the elastic hook 74 to retract it into the plug groove 22, and the plug 73 can be directly pulled out, realizing the quick separation of the sheet metal part 6 and the mounting back plate 2.

[0045] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A tripping mechanism for a dual-power switch, comprising a housing (1), wherein a mounting back plate (2) is provided inside the housing (1), and two power shafts (01) are rotatably connected to the mounting back plate (2), characterized in that, The mounting back plate (2) is rotatably connected to a buckle plate (3) corresponding to the two power shafts (01). The end of the buckle plate (3) is provided with a hook block (31). The power shaft (01) is fitted with a hook plate (32) that hooks and engages with the hook block (31). The two buckle plates (3) are connected by an elastic element (33). The elastic element (33) pushes the two hook blocks (31) away from each other to hook the hook plate (32). The mounting back plate (2) is provided with a drive assembly (5) and a transmission assembly (4). The drive assembly (5) drives the hook block (31) to disengage from the hook plate (32) through the transmission assembly (4).

2. The tripping mechanism of a dual-power switch according to claim 1, characterized in that, The transmission assembly (4) includes a rotating pin (41) rotatably connected to the mounting back plate (2). One end of the rotating pin (41) is fitted with a push block (42), and the other end is fitted with a connecting frame (43). The driving assembly (5) drives the connecting frame (43) to rotate around the rotating pin (41). When the push block (42) rotates from a vertical position to a horizontal position, the push block (42) pushes the hook block (31) to disengage from the hook plate (32).

3. The tripping mechanism of a dual-power switch according to claim 2, characterized in that, The connecting frame (43) is provided with a movable pin (44) and a connecting arm (45). The driving component (5) includes a manual component (52) and an electric component (51). The electric component (51) drives the movable pin (44) to move in the horizontal direction to realize the rotation of the connecting frame (43). The manual component (52) drives the connecting arm (45) to move in the vertical direction to realize the rotation of the connecting frame (43).

4. The tripping mechanism of a dual-power switch according to claim 3, characterized in that, The electric control assembly (51) includes a mounting cylinder (511) disposed on the mounting back plate (2). One end of the mounting cylinder (511) is provided with a fixed electromagnet (512), and the other end is slidably connected with a movable magnet (513). The end of the movable magnet (513) is provided with a push column (514) that slides with the mounting cylinder (511). A return spring (515) is sleeved on the outer surface of the push column (514). A connecting plate (516) is provided at the movable end of the push column (514). A waist-shaped groove (5161) that slides with the moving pin (44) is provided on the connecting plate (516).

5. The tripping mechanism of a dual-power switch according to claim 3, characterized in that, The housing (1) has a sliding groove (101) on its surface. The manual control assembly (52) includes a button (521) slidably connected in the sliding groove (101). The end of the button (521) is provided with an abutment post (522), and the end of the abutment post (522) is positioned toward the connecting arm (45). The bottom wall of the sliding groove (101) is provided with a top support spring (523), and the elastic force of the top support spring (523) drives the button (521) to move upward.

6. The tripping mechanism of a dual-power switch according to claim 4, characterized in that, Sheet metal parts (6) are provided on both sides of the mounting cylinder (511). The sheet metal parts (6) are detachably connected to the mounting back plate (2) through multiple connecting components (7). The end of the movable pin (44) is threadedly connected to a locking stud (441). The nut end of the locking stud (441) abuts against the surface of the connecting plate (516).

7. The tripping mechanism of a dual-power switch according to claim 6, characterized in that, The connecting assembly (7) includes a threaded post (71) disposed on the sheet metal part (6), and the mounting back plate (2) is provided with a mounting hole (21) for the threaded post (71) to pass through. A locking nut (72) is threadedly connected to the outer surface of the threaded post (71), and the locking nut (72) abuts against the outer surface of the mounting back plate (2).

8. The tripping mechanism of a dual-power switch according to claim 6, characterized in that, The connecting assembly (7) includes a plug-in post (73) disposed on the sheet metal part (6). The mounting back plate (2) is provided with a plug-in groove (22) that engages with the plug-in post (73). The end of the plug-in post (73) away from the sheet metal part (6) is provided with a plurality of elastic hooks (74) in the circumferential direction. When the elastic hooks (74) are in their natural state, they extend out of the plug-in groove (22) and abut against the outer surface of the mounting back plate (2). The outer surface of the elastic hooks (74) is provided with a guide cone surface.

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