An auxiliary switch and circuit breaker

Abstract

The application discloses an auxiliary switch and a circuit breaker, and belongs to the technical field of low-voltage electrical apparatuses. The auxiliary switch comprises a microswitch and a rotating lever. The microswitch comprises a switch body, a touch arm arranged on the switch body, and a trigger point. The rotating lever is arranged opposite to the microswitch, and rotation of the rotating lever can drive the touch arm to move relative to the trigger point. When the touch arm presses the trigger point, and the force applied by the touch arm to the rotating lever passes through the rotation axis of the rotating lever, the rotating lever enters a dead point position, and at this time, the microswitch is kept in a triggered state. The auxiliary switch provided by the application can keep the microswitch in the triggered state when the touch arm presses the trigger point, even if the operating mechanism is separated from the auxiliary switch, the rotating lever will not rotate due to the force of the touch arm, and the stability and accuracy of signal output are effectively ensured.

Description

Technical Field

[0001] This invention relates to the field of low-voltage electrical technology, and more particularly to an auxiliary switch and circuit breaker. Background Technology

[0002] In existing technology, auxiliary switches are a common accessory for low-voltage circuit breakers. Through the cooperation of the auxiliary switch and the operating mechanism, the auxiliary switch can output a closed or open status indication signal of the circuit breaker, thereby determining the working status of the circuit breaker operating mechanism. However, common auxiliary switches can only maintain one status signal when there is no external force, namely the closed status indication signal in the closed state (free state). In the open state, the auxiliary switch needs to rely on the continuous and stable contact of the circuit breaker operating mechanism to maintain the stability of the open status indication signal, which is greatly affected by the external environment. Summary of the Invention

[0003] One objective of this invention is to provide an auxiliary switch that effectively ensures the stability and accuracy of signal output.

[0004] To achieve this objective, the present invention adopts the following technical solution:

[0005] An auxiliary switch is provided, comprising:

[0006] A micro switch includes a switch body and an actuating arm and a trigger point disposed on the switch body;

[0007] A rotary lever, positioned opposite the micro switch, allows the rotating lever to move the actuating arm relative to the trigger point; wherein...

[0008] When the trigger arm presses and triggers the trigger point, and the force F applied by the trigger arm to the rotating lever passes through the rotation axis of the rotating lever, the rotating lever enters the dead position, at which time the micro switch remains in the triggered state.

[0009] Optionally, the rotary lever includes a rotatable shaft and an actuating portion disposed around the periphery of the shaft. The actuating portion extends radially along the shaft and contacts the actuating arm.

[0010] When the rotating lever enters the dead position, the contact point P between the trigger part and the trigger arm is located on the same horizontal plane as the rotation axis of the shaft, and the force F exerted by the trigger arm on the trigger part passes through the rotation axis of the shaft in the horizontal direction.

[0011] Optionally, the rotating lever includes a first linkage part and a second linkage part disposed opposite to each other; wherein,

[0012] By pushing against the first linkage part, the trigger arm can be squeezed to trigger the trigger point until the rotating lever enters the dead position;

[0013] By pushing the second linkage part in the opposite direction to the first linkage part, the trigger arm can be moved away from the trigger point, and the micro switch can be kept in the non-triggered state.

[0014] Optionally, a clearance space is formed between the first linkage and the second linkage; wherein,

[0015] By pushing the first linkage part from one side toward the clearance space to the side of the first linkage part toward the clearance space, the trigger arm can be squeezed to trigger the trigger point until the rotating lever remains in the triggered state of the micro switch.

[0016] By pushing the second linkage part from one side toward the clearance space to the other side toward the clearance space, the actuating arm can be moved away from the trigger point, and the rotating lever can be kept in the non-triggered state of the micro switch.

[0017] Optionally, the system also includes a bracket comprising two opposing fixed plates, with the micro switch and the rotary lever both disposed between the two fixed plates.

[0018] Optionally, a plurality of microswitches are provided between the two fixed plates, and partitions are provided between the microswitches adjacent to the fixed plates and between the fixed plates, as well as between adjacent microswitches.

[0019] Optionally, the fixed plate is provided with a limiting groove, and the rotating lever is provided with a limiting protrusion. The rotation of the rotating lever can drive the limiting protrusion to slide within the limiting groove.

[0020] Optionally, it also includes an elastic element connected to the rotary lever, the elastic element causing the rotary lever to tend to rotate in a direction that drives the trigger arm from away from the trigger point.

[0021] Optionally, it also includes a bracket, which is rotatably connected to the rotary lever, and the bracket is provided with a hook arm, which has a first hook hole.

[0022] The rotary lever includes a rotatable shaft and an actuating part disposed around the shaft. The actuating part contacts the actuating arm, and a second hook-up hole is provided on the actuating part.

[0023] The elastic element includes a first hook and a second hook, wherein the first hook is engaged with the first hook hole and the second hook is engaged with the second hook hole.

[0024] Another object of the present invention is to provide a circuit breaker comprising:

[0025] shell;

[0026] The aforementioned auxiliary switch is mounted on the housing.

[0027] An operating mechanism is connected to the auxiliary switch and is used to trigger or disconnect the auxiliary switch.

[0028] Beneficial effects:

[0029] The auxiliary switch provided by this invention, when the trigger arm presses the trigger point, the force applied by the trigger arm to the rotating lever passes through the rotation axis of the rotating lever, that is, the rotating lever and the trigger arm are in a dead point state. Even if the operating mechanism is disengaged from the auxiliary switch, the rotating lever will not rotate due to the force of the trigger arm, thereby keeping the rotating lever in the dead point position and the micro switch in the triggered state, effectively ensuring the stability and accuracy of the signal output.

[0030] The circuit breaker provided by this invention has an operating mechanism that drives a rotating lever to trigger or disconnect an auxiliary switch. Through the design of the auxiliary switch, even if the operating mechanism is disengaged from the auxiliary switch due to continuous oscillation caused by collision, the auxiliary switch can remain in the triggered state, effectively ensuring the stability and accuracy of the signal output. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the structure of the auxiliary switch provided by the present invention when it is in a dead state;

[0032] Figure 2 This is a schematic diagram of the circuit breaker provided by the present invention;

[0033] Figure 3 This is a schematic diagram of the micro switch provided by the present invention;

[0034] Figure 4 This is a partial structural schematic diagram of the circuit breaker provided by the present invention when the auxiliary switch is triggered;

[0035] Figure 5 This is a partial structural schematic diagram of the circuit breaker provided by the present invention when the cantilever detaches from the rotating lever due to vibration;

[0036] Figure 6 This is a schematic diagram of the rotating lever provided by the present invention;

[0037] Figure 7This is a partial structural diagram of the circuit breaker provided by the present invention when the auxiliary switch is disconnected;

[0038] Figure 8 This is a schematic diagram of the cantilever structure provided by the present invention;

[0039] Figure 9 This is a schematic diagram of the auxiliary switch from one perspective when the rotating lever is in the first extreme position, provided by the present invention.

[0040] Figure 10 This is a schematic diagram of the structure of the bracket provided by the present invention;

[0041] Figure 11 This is a schematic diagram of the auxiliary switch from another perspective when the rotating lever provided by the present invention is in the first extreme position.

[0042] In the picture:

[0043] 100. Outer shell;

[0044] 200. Auxiliary switch; 210. Micro switch; 211. Switch body; 212. Actuating arm; 213. Trigger point; 220. Rotary lever; 2201. Clearance space; 221. Shaft; 222. Actuating part; 2221. Second mounting hole; 223. First linkage part; 224. Second linkage part; 2241. Arc groove; 225. Stepped part; 226. Limiting protrusion; 230. Bracket; 231. Fixing plate; 2311. Rotary hole; 2312. Limiting groove; 232. Ear; 233. Mounting arm; 2331. First mounting hole; 240. Partition; 250. Elastic element;

[0045] 300. Operating mechanism; 310. Spindle;

[0046] 400, cantilever; 410, first trigger part; 411, bent contact; 420, second trigger part; 421, linkage shaft. Detailed Implementation

[0047] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0048] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0049] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0050] In the description of this embodiment, the terms "upper," "lower," "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0051] Reference Figures 1 to 5 As shown, this embodiment provides a circuit breaker, which includes a housing 100, an auxiliary switch 200, and an operating mechanism 300. The auxiliary switch 200 is disposed on the housing 100, and the operating mechanism 300 is connected to the auxiliary switch 200. The operating mechanism 300 is used to trigger or disconnect the auxiliary switch 200. The operating mechanism 300 is prior art and is not the focus of this application, so it will not be described in detail here. In this embodiment, the circuit breaker can display its opening and closing information through signals emitted by the auxiliary switch 200.

[0052] Specifically, the auxiliary switch 200 includes a micro switch 210 and a rotary lever 220. The micro switch 210 includes a switch body 211, an actuating arm 212, and a trigger point 213 disposed on the switch body 211. The rotary lever 220 is disposed opposite to the micro switch 210, and rotation of the rotary lever 220 can drive the actuating arm 212 to move relative to the trigger point 213. When the actuating arm 212 presses against the trigger point 213, and the force F applied by the actuating arm 212 to the rotary lever 220 passes through the rotation axis of the rotary lever 220, the rotary lever 220 enters a dead position, at which point the micro switch 210 remains in the triggered state. The triggered state of the micro switch 210 refers to the trigger point 213 being pressed and triggered.

[0053] In this embodiment, the operating mechanism 300 drives the rotating lever 220 to trigger or disconnect the auxiliary switch 200. Through the design of the auxiliary switch 200, even when the operating mechanism 300 oscillates continuously due to collision, the auxiliary switch 200 remains in the triggered state, effectively ensuring the stability and accuracy of the signal output. Specifically, when the trigger arm 212 presses the trigger point 213, the force F applied by the trigger arm 212 to the rotating lever 220 passes through the rotation axis of the rotating lever 220. That is, the rotating lever 220 and the trigger arm 212 are in a dead-point state. Even if the operating mechanism 300 disengages from the auxiliary switch 200, the rotating lever 220 will not rotate due to the force of the trigger arm 212, thus keeping the rotating lever 220 in the dead-point position and the micro switch 210 in the triggered state, effectively ensuring the stability and accuracy of the signal output.

[0054] In this embodiment, reference is made to Figure 1 and Figure 6 As shown, the rotary lever 220 includes a rotatable shaft 221 and an actuating portion 222 disposed around the shaft 221. The actuating portion 222 extends radially along the shaft 221 and contacts the actuating arm 212. The axis of rotation of the rotary lever 220 is the centerline of the shaft 221. In this embodiment, the actuating portion 222 is disposed around the shaft 221. When the rotary lever 220 rotates around the shaft 221, the actuating portion 222 presses against the actuating arm 212, causing the actuating arm 212 to press against the trigger point 213. When the rotary lever 220 rotates in the opposite direction around the shaft 221, the actuating portion 222 yields, and the actuating arm 212 deforms away from the trigger point 213 until the trigger point 213 is disconnected. The structure is simple, convenient, and reliable.

[0055] Furthermore, when the rotary lever 220 reaches the dead position, the micro switch 210 remains in the triggered state. The contact point P of the actuating part 222 and the actuating arm 212 is located on the same horizontal plane as the rotation axis of the shaft 221, and the force F exerted by the actuating arm 212 on the actuating part 222 passes through the rotation axis of the shaft 221 in the horizontal direction. This further ensures the stability of the actuating arm 212 pressing the trigger point 213, thus ensuring that the micro switch 210 remains stably in the triggered state. Figure 1 In the diagram, direction a is the horizontal direction, and the plane containing directions a and b is the horizontal plane. Further, the triggering part 222 rotates from top to bottom to squeeze the triggering arm 212, causing the triggering arm 212 to squeeze the trigger point 213; the triggering part 222 rotates from bottom to top to avoid the triggering arm 212, causing the triggering arm 212 to move away from the trigger point 213.

[0056] In this embodiment, reference is made to Figures 4 to 8 As shown, the rotary lever 220 includes a first linkage 223 and a second linkage 224 disposed opposite to each other. By pushing against the first linkage 223, the actuating arm 212 presses against the trigger point 213 until the rotary lever 220 reaches its dead position, triggering the micro switch 210. By pushing against the second linkage 224 in the opposite direction to the first linkage 223, the actuating arm 212 moves away from the trigger point 213, keeping the micro switch 210 in a non-triggered state. The non-triggered state of the micro switch 210 means that the trigger point 213 is not triggered. In this embodiment, the rotary lever 220 is provided with two linkages to ensure the accuracy of the rotary lever 220 driving the actuating arm 212, thereby ensuring the stability and accuracy of the signal output of the micro switch 210.

[0057] In one feasible implementation, such as Figure 4 , Figure 6 and Figure 7 As shown, a clearance space 2201 is formed between the first linkage 223 and the second linkage 224. Specifically, by pushing the first linkage 223 from one side toward the clearance space 2201 to the other side, the trigger arm 212 can press against the trigger point 213; by pushing the second linkage 224 from one side toward the clearance space 2201 to the other side, the trigger arm 212 can move away from the trigger point 213. In this embodiment, as... Figure 8As shown, the circuit breaker also includes a cantilever 400. The operating mechanism 300 drives the rotating lever 220 to rotate via the cantilever 400. The clearance space 2201 prevents the cantilever 400 from simultaneously contacting the first linkage part 223 and the second linkage part 224. This can be understood as follows: when the cantilever 400 contacts the first linkage part 223, it does not contact the second linkage part 224, meaning there is a gap between the cantilever 400 and the second linkage part 224; conversely, when the cantilever 400 contacts the second linkage part 224, it does not contact the first linkage part 223, meaning there is a gap between the cantilever 400 and the first linkage part 223. When the operating mechanism 300 switches from closing to opening, the clearance space 2201 effectively prevents the cantilever 400 from contacting the second linkage part 224 due to oscillation, thereby ensuring that the rotating lever 220 is in a dead position and the micro switch 210 remains in the triggered state, i.e., the trigger arm 212 triggers the trigger point 213.

[0058] Specifically, the cantilever 400 is fixed on the main shaft 310 of the operating mechanism 300, and the cantilever 400 is driven to rotate by the rotation of the main shaft 310 of the operating mechanism 300.

[0059] In one feasible implementation, such as Figures 4 to 8 As shown, the cantilever 400 includes a first trigger part 410 and a second trigger part 420 disposed opposite to each other; wherein, the first trigger part 410 is used to push the first linkage part 223 to trigger the micro switch 210; the second trigger part 420 is used to push the second linkage part 224 to disconnect the micro switch 210, and the first trigger part 410 is located on the side where the second trigger part 420 pushes the second linkage part 224, so as to reduce the size of the clearance space 2201, effectively ensure the structural compactness of the rotating lever 220, and thus ensure the structural compactness of the auxiliary switch 200 and the circuit breaker.

[0060] In one feasible implementation, no clearance space 2201 is formed between the first linkage part 223 and the second linkage part 224, meaning that the first linkage part 223 and the second linkage part 224 are the same linkage part. The first trigger part 410 and the second trigger part 420 are arranged at intervals around the rotation axis of the cantilever 400, that is, the first trigger part 410 and the second trigger part 420 are arranged at an angle, and the linkage part is located between the first trigger part 410 and the second trigger part 420. In this embodiment, the first trigger part 410 and the second trigger part 420 do not contact the linkage part at the same time. When the operating mechanism 300 switches from closing to opening, it effectively prevents the second trigger part 420 from contacting the linkage part due to vibration, thereby ensuring that the trigger arm 212 maintains the state of pressing the trigger point 213.

[0061] For example, such as Figure 6 and Figure 8As shown, the first triggering part 410 is provided with a bent contact 411, which is used to push against the periphery of the first linkage part 223, effectively ensuring the accuracy of the first triggering part 410 pushing against the first linkage part 223. This ensures that when the operating mechanism 300 opens, the actuating arm 212 presses against the trigger point 213, and the rotating lever 220 and the actuating arm 212 are in a dead point state. The first linkage part 223 can be a straight rod. Of course, the first linkage part 223 can also be other shapes, which are not limited in this application.

[0062] For example, such as Figure 6 and Figure 8 As shown, the second linkage part 224 has an arc-shaped groove 2241, and the second trigger part 420 is provided with a linkage shaft 421, which is used to push against the inner surface of the arc-shaped groove 2241. In this embodiment, the arc-shaped groove 2241 allows for an appropriate clearance space 2201 between the second linkage part 224 and the first linkage part 223, enabling the linkage shaft 421 to better push against the inner surface of the arc-shaped groove 2241. This effectively ensures the stability of the force between the linkage shaft 421 and the inner surface of the arc-shaped groove 2241, thereby preventing excessive force from causing breakage of the second linkage part 224 and the second trigger part 420. Furthermore, the linkage shaft 421 and the second trigger part 420 can be either fixedly connected or rotatably connected.

[0063] In one feasible implementation, such as Figure 6 and Figure 8 As shown, the first linkage part 223 and the second linkage part 224 are spaced apart along the rotation axis of the rotating lever 220. The cantilever 400 is disposed between the first linkage part 223 and the second linkage part 224, and the bent contact 411 and the linkage shaft 421 are respectively disposed on opposite sides of the cantilever 400, so that the bent contact 411 and the linkage shaft 421 can respectively push against the first linkage part 223 and the second linkage part.

[0064] In this embodiment, reference is made to Figures 9 to 11 As shown, the auxiliary switch 200 also includes a bracket 230, which includes two opposing fixed plates 231. The micro switch 210 and the rotary lever 220 are both disposed between the two fixed plates 231, which facilitates the installation of the micro switch 210 and the rotary lever 220.

[0065] For example, the bracket 230 can be U-shaped, and the bracket 230 can be formed by stamping and bending, which facilitates the forming and manufacturing process.

[0066] Specifically, the bracket 230 is fixed to the housing 100. For example, each fixing plate 231 is connected to an ear 232, and the bracket 230 is connected to the housing 100 by means of bolts passing through the ear 232 and being threadedly connected to the housing 100.

[0067] In one feasible implementation, such as Figure 6 , Figure 9 and Figure 10 As shown, both ends of the shaft 221 of the rotary lever 220 are provided with stepped portions 225, and both fixed plates 231 are provided with rotating holes 2311. The stepped portions 225 pass through the rotating holes 2311 to realize the rotational connection between the rotary lever 220 and the bracket 230. The cooperation between the stepped surfaces of the shaft 221 and the stepped portions 225 and the fixed plates 231 realizes the axial positioning of the rotary lever 220.

[0068] In one feasible implementation, such as Figure 9 As shown, multiple microswitches 210 are disposed between the two fixing plates 231, and a partition 240 is disposed between adjacent microswitches 210. In this embodiment, the partition 240 effectively prevents phase-to-phase short circuits between the microswitches 210. Furthermore, the partition 240 disposed between the microswitches 210 adjacent to the fixing plate 231 and the fixing plate 231 effectively prevents conduction between the microswitches 210 and the bracket 230.

[0069] In one feasible implementation, such as Figures 9 to 11 As shown, a limiting groove 2312 is provided on the fixed plate 231, and a limiting protrusion 226 is provided on the rotating lever 220. Rotation of the rotating lever 220 causes the limiting protrusion 226 to slide within the limiting groove 2312. In this embodiment, when the rotating lever 220 rotates to the position that triggers the micro switch 210, the limiting protrusion 226 abuts against the inner surface of the first end of the limiting groove 2312 to restrict the rotation of the rotating lever 220, i.e., the rotating lever 220 rotates to the first extreme position, so that the rotating lever 220 and the actuating arm 212 are stably in a dead-point state. Furthermore, when the limiting protrusion 226 abuts against the inner surface of the second end of the limiting groove 2312, the rotating lever 220 has rotated to the second extreme position.

[0070] In this embodiment, reference continues to be made to... Figures 9 to 11 As shown, the auxiliary switch 200 also includes an elastic element 250, which is connected to the rotary lever 220. The elastic element 250 causes the rotary lever 220 to tend to rotate in a direction that drives the trigger arm 212 from away from the trigger point 213. When the first trigger part 410 disengages from the first linkage part 223 due to oscillation, the design of the elastic element 250 can further stabilize the dead point state between the trigger arm 212 and the rotary lever 220, so as to more stably ensure that the micro switch 210 remains in the triggered state, effectively ensuring the stability and accuracy of the signal output.

[0071] In this embodiment, the micro switch 210 is stably triggered by the combined action of the elastic body, the limiting groove 2312, and the limiting protrusion 226, effectively ensuring the stability and accuracy of the signal output.

[0072] In one feasible implementation, such as Figure 6 and Figure 10 As shown, the bracket 230 is provided with a hook arm 233, and the hook arm 233 has a first hook hole 2331. The actuating part 222 of the rotating lever 220 is provided with a second hook hole 2221. The elastic element 250 includes a first hook and a second hook. The first hook is hooked to the first hook hole 2331, and the second hook is hooked to the second hook hole 2221, which facilitates the assembly of the elastic element. For example, the elastic element 250 is a tension spring.

[0073] For example, such as Figure 4 and Figure 5 As shown, when the operating mechanism 300 switches from closing to opening, the main shaft 310 of the operating mechanism 300 drives the cantilever 400 to rotate. The bending contact 411 of the first trigger part 410 of the cantilever 400 pushes against the first linkage part 223. The rotating lever 220 rotates and squeezes the trigger arm 212 through the trigger part 222. The trigger arm 212 bends until the operating mechanism 300 switches to opening. When the operating mechanism 300 switches to the trip position, the trigger arm 212 presses the trigger point 213, which triggers the micro switch 210 and causes oscillation, i.e., the cantilever 400 rotates, causing the bent contact 411 to disengage from the first linkage part 223. Because the rotating lever 220 and the trigger arm 212 are in a dead point state, and under the action of the elastic body, the limiting protrusion 226 and the limiting slide 2312, the trigger arm 212 and the trigger point 213 remain relatively stable. The trigger point 213 is triggered, and the rotating lever 220 is in a dead point position, thereby ensuring the stability and accuracy of the signal output.

[0074] For example, such as Figure 7 As shown, when the operating mechanism 300 switches from opening to closing, the main shaft 310 of the operating mechanism 300 drives the cantilever 400 to rotate. The bent contact 411 of the second trigger part 420 of the cantilever 400 pushes against the second linkage part 224. The rotating lever 220 rotates so that the trigger part 222 gives way to the trigger arm 212. The trigger arm 212 continues to move away from the trigger point 213 until the operating mechanism 300 switches to opening and the rotating lever 220 rotates to the second limit position.

[0075] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. An auxiliary switch, characterized in that, include: The micro switch (210) includes a switch body (211) and an actuating arm (212) and a trigger point (213) disposed on the switch body (211). A rotating lever (220) is disposed opposite to the micro switch (210). Rotation of the rotating lever (220) can drive the actuating arm (212) to move relative to the trigger point (213). The rotating lever (220) includes a first linkage part (223) and a second linkage part (224) disposed opposite to each other. By pushing against the first linkage part (223), the trigger arm (212) can press the trigger point (213) until the rotating lever (220) enters the dead position; when the trigger arm (212) presses and triggers the trigger point (213), and the force F applied by the trigger arm (212) to the rotating lever (220) passes through the rotation axis of the rotating lever (220), the rotating lever (220) enters the dead position, and at this time the micro switch (210) remains in the triggered state; By pushing the second linkage part (224) in the opposite direction to pushing the first linkage part (223), the trigger arm (212) can be moved away from the trigger point (213), and the micro switch (210) can be kept in the non-triggered state.

2. The auxiliary switch according to claim 1, characterized in that, The rotary lever (220) includes a rotatably mounted shaft (221) and an actuating portion (222) disposed around the shaft (221). The actuating portion (222) extends radially along the shaft (221) and contacts the actuating arm (212). When the rotating lever (220) enters the dead position, the contact point P of the trigger part (222) and the trigger arm (212) is located on the same horizontal plane as the rotation axis of the shaft part (221), and the force F of the trigger arm (212) acting on the trigger part (222) passes through the rotation axis of the shaft part (221) in the horizontal direction.

3. The auxiliary switch according to claim 1, characterized in that, A clearance space (2201) is formed between the first linkage part (223) and the second linkage part (224); wherein, By pushing the first linkage part (223) from one side toward the inside of the clearance space (2201) to the side of the first linkage part (223) toward the outside of the clearance space (2201), the trigger arm (212) can be squeezed to trigger the trigger point (213). By pushing the second linkage part (224) from one side toward the clearance space (2201) to the side of the second linkage part (224) toward the clearance space (2201), the trigger arm (212) can be moved away from the trigger point (213).

4. The auxiliary switch according to claim 1, characterized in that, It also includes a bracket (230), which includes two opposing fixed plates (231), and the micro switch (210) and the rotary lever (220) are both disposed between the two fixed plates (231).

5. The auxiliary switch according to claim 4, characterized in that, A plurality of micro switches (210) are provided between the two fixed plates (231), and partitions (240) are provided between the micro switches (210) adjacent to the fixed plate (231) and between the fixed plate (231) and between the adjacent micro switches (210).

6. The auxiliary switch according to claim 4, characterized in that, The fixed plate (231) is provided with a limiting groove (2312), and the rotating lever (220) is provided with a limiting protrusion (226). The rotation of the rotating lever (220) can drive the limiting protrusion (226) to slide within the limiting groove (2312).

7. The auxiliary switch according to any one of claims 1-6, characterized in that, It also includes an elastic element (250) connected to the rotary lever (220), the elastic element (250) causing the rotary lever (220) to have a tendency to rotate in a direction that drives the trigger arm (212) from away from to trigger the trigger point (213).

8. The auxiliary switch according to claim 7, characterized in that, It also includes a bracket (230), which is rotatably connected to the rotating lever (220). The bracket (230) is provided with a hook arm (233), and the hook arm (233) is provided with a first hook hole (2331). The rotary lever (220) includes a rotatable shaft (221) and an actuating part (222) disposed around the shaft (221). The actuating part (222) is in contact with the actuating arm (212), and a second hook hole (2221) is provided on the actuating part (222). The elastic element (250) includes a first hook and a second hook, the first hook being hooked to the first hook hole (2331) and the second hook being hooked to the second hook hole (2221).

9. A circuit breaker, characterized in that, include: Outer shell (100); The auxiliary switch (200) as described in any one of claims 1-8 is disposed on the housing (100); An operating mechanism (300) is connected to the auxiliary switch (200) and is used to trigger or disconnect the auxiliary switch (200).

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