A circuit breaker

Abstract

The application provides a circuit breaker, relates to the technical field of switches, and can reduce the production cost of the circuit breaker and is easy to assemble. The circuit breaker comprises a shell, an indicating piece, a movable contact, a driving shaft and an elastic piece, and the shell is provided with a viewing window. The indicating piece is provided with an acting end and an indicating end, and the indicating end is provided with an opening indication mark and a closing indication mark. When the indicating piece is in a first position, the opening indication mark corresponds to the viewing window. When the indicating piece is in a second position, the closing indication mark corresponds to the viewing window. When the movable contact is in a contact position, the indicating piece is in the second position. When the movable contact is in a disengagement position, the indicating piece is in the first position. The driving shaft drives the movable contact to switch between the contact position and the disengagement position. The driving part of the driving shaft is in abutment with the acting end, and the indicating piece is switched from the first position to the second position. The two ends of the elastic piece are elastically applied to the shell and the indicating piece respectively, and are used for applying an action force close to the driving part to the acting end.

Description

Technical Field

[0001] This application relates to the field of switch technology, specifically to a circuit breaker. Background Technology

[0002] A circuit breaker is an important electrical protection device that can automatically cut off power when an abnormal situation such as overload or short circuit occurs in the circuit where the circuit breaker is located.

[0003] To better monitor the operating status of circuit breakers, an indicator is usually installed on the circuit breaker to display its open / closed status. This provides users with an accurate signal, ensuring their safety during maintenance and other operations.

[0004] Circuit breakers with indicators in the existing technology are often complex in structure, have high production costs, and are difficult to assemble. Utility Model Content

[0005] This application provides a circuit breaker with a simple structure, which can reduce the production cost of the circuit breaker and is easy to assemble.

[0006] To achieve the above objectives, this application provides a circuit breaker, including a housing, an indicator, a moving contact, a drive shaft, and a resilient element. A viewing window is provided on the housing. The indicator is rotatably mounted on the housing and has an operating end and an indicating end disposed opposite to each other. The indicating end is provided with an open indicator and a closed indicator. The indicator has a first position and a second position relative to the housing. When the indicator is in the first position, the open indicator corresponds to the viewing window. When the indicator is in the second position, the closed indicator corresponds to the viewing window. The moving contact is rotatably mounted on the housing and has a contact position and a disengaged position relative to the housing. When the moving contact is in the contact position, the indicator is in the second position. When the moving contact is in the disengaged position, the indicator is in the first position. The drive shaft is rotatably mounted on the housing and is used to drive the moving contact to switch between the contact position and the disengaged position. The drive shaft has a drive portion that abuts against the operating end to drive the indicator to switch from the first position to the second position. The two ends of the resilient element elastically act on the housing and the indicator, respectively, to apply a force to the operating end towards the drive portion.

[0007] When the above technical solution is adopted, when the drive shaft rotates relative to the housing, it can synchronously drive the moving contact to rotate relative to the housing, and make the moving contact switch between the contact position and the disengagement position.

[0008] The drive shaft has a drive unit for contacting the working end. During the process of the drive shaft driving the moving contact to switch from the disengaged position to the contact position, the drive unit can synchronously drive the indicator to switch from the first position to the second position.

[0009] When the moving contact is in the disengaged position, the indicating end can rotate clockwise under the action of the elastic element, bringing the indicating element to the first position. At this time, the trip indicator corresponds to the viewing window. The operator can observe the trip indicator through the viewing window to know that the circuit breaker is in the tripped state.

[0010] At the same time, when the indicator end rotates clockwise, the actuating end rotates clockwise and comes into contact with the driving part.

[0011] During the process of the drive shaft driving the moving contact to switch from the disengaged position to the engaged position, the drive unit pushes the actuating end to rotate counterclockwise. Correspondingly, the indicating end rotates counterclockwise, compressing the elastic element and causing the indicating element to switch from the first position to the second position. At this time, the closing indicator corresponds to the viewing window. The operator can observe the closing indicator through the viewing window to know that the circuit breaker is in the closed state.

[0012] The circuit breaker provided in this application, by setting a driving unit on a drive shaft, and simultaneously setting an elastic element and an indicator, causes the indicator to move synchronously with the moving contact under the action of the driving unit and the elastic element, switching between a first position and a second position to indicate whether the circuit breaker is in an open or closed state, providing the user with an accurate signal. This circuit breaker has a relatively simple structure, is easy to install and operate, shortens the production and installation cycle of the circuit breaker, and reduces the production cost of the circuit breaker.

[0013] In one possible implementation, the indicator has a first extension, and the elastic member is sleeved outside the first extension.

[0014] When the above technical solution is adopted, the elastic element is sleeved outside the first extension, and the first extension can support the elastic element and provide a stable supporting force for it. At the same time, the first extension can limit the elastic element, reduce the possibility of misalignment, and ensure that the elastic element can apply a force to the action end toward the driving part so that the action end abuts against the driving part.

[0015] In one possible implementation, the housing has a clearance groove that mates with the first extension.

[0016] When the above technical solution is adopted, the avoidance groove is provided so that when the indicator switches from the first position to the second position, the first extension can extend into the avoidance groove to avoid the housing interfering with the movement of the indicator.

[0017] In addition, the design of the clearance groove can reduce the amount of material used in the shell, saving costs and reducing the weight of the shell.

[0018] In one possible implementation, the first extension is an arc-shaped extension, and the center of the first extension coincides with the rotation center of the indicator.

[0019] When the above technical solution is adopted, as the indicator rotates around its rotation center, the first extension rotates around its own center. During the rotation of the indicator, the first extension will not produce eccentric motion, and the torque of the first extension during rotation is balanced, reducing vibration and unnecessary forces, and improving the smoothness of the indicator's movement.

[0020] In one possible implementation, the housing is further provided with a limiting groove that mates with the indicator. When the indicator is in the first position, one side of the indicator abuts against the groove wall of the limiting groove.

[0021] When the above technical solution is adopted, the moving contact is in the disengaged position, the indicator is in the first position, and one side of the indicator abuts against the wall of the limiting groove. The limiting groove blocks the indicator by its wall, preventing the indicator from moving further, which can improve the accuracy of the indicator in the first position and the moving contact in the disengaged position. At the same time, it facilitates the alignment and matching of the indicator, moving contact, and housing during installation.

[0022] In one possible implementation, the circuit breaker also includes a microswitch disposed within the housing. The microswitch is electrically connected to the circuit breaker's circuit board. When the indicator is in the first position, the indicator can trigger the microswitch.

[0023] When the above technical solution is adopted, when the indicator is in the first position, the indicator is in contact with the trigger terminal of the micro switch, and the micro switch can be triggered by the indicator. When the indicator switches from the first position to the second position, the indicator disengages from the trigger terminal of the micro switch. The circuit of the micro switch is also switched when the indicator switches between the first and second positions. The mechanical displacement of the indicator is converted into an electrical signal, which can be fed back to the control system or remote monitoring equipment to achieve circuit breaker operating status confirmation or interlocking control.

[0024] The microswitch is electrically connected to the circuit breaker's circuit board. The microswitch allows operators to observe the circuit breaker's open or closed state not only through a viewing window but also through other means. This avoids misjudgments and enhances system reliability.

[0025] In one possible implementation, the indicator is provided with a second extension for triggering a micro switch.

[0026] When the above technical solution is adopted, the second extension facilitates the contact between the indicator and the trigger end of the micro switch. When the indicator reaches the first position, the second extension can trigger the micro switch, ensuring that the triggering time of the micro switch corresponds to the state of the indicator.

[0027] In one possible implementation, the indicator is provided with stiffeners.

[0028] When the above technical solution is adopted, the addition of stiffeners can significantly improve the bending and torsional resistance of the indicator, effectively reducing the possibility of deformation under frequent operation or external impact. Stiffeners can also distribute loads, reduce the risk of localized fracture, and enhance the structural strength of the indicator.

[0029] In one possible implementation, the elastic element is a spring.

[0030] When the above technical solution is adopted, the force of the spring can be accurately calculated, making it easy to match the force applied to the actuating end towards the driving part according to actual needs. The spring has functions such as reset, buffering, and energy storage. When the moving contact is in the contact position, the indicator is in the second position, the driving part abuts against the actuating end, and the spring is compressed, storing a portion of energy. When the moving contact switches from the contact position to the disengagement position, the spring can release energy, driving the indicator end to move closer to the micro-motion contact, causing the indicator to trigger the micro-motion contact. Simultaneously, the actuating end moves closer to the driving part and abuts against it, so that when the moving contact switches from the disengagement position to the contact position, the indicator can be simultaneously driven to switch from the first position to the second position.

[0031] The spring also has a good buffering function. When the indicator switches between the first position and the second position, it can play a good protective role for the indicator, effectively reducing the rigid contact between the indicator and the drive part and the groove wall of the limiting groove, which can extend the service life of the indicator.

[0032] In one possible implementation, the indicator is an integral structure.

[0033] By adopting the above technical solution, stress concentration problems caused by connection methods such as snap-fit ​​or welding can be avoided, ensuring higher dimensional accuracy and consistency, and improving the structural strength of the indicator. Furthermore, the number of connection points is reduced, lowering the risk of failure due to loose connections, corrosion, or fatigue, and improving fatigue resistance. In addition, the number of parts and assembly steps of the indicator can be reduced, simplifying the operation process. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the circuit breaker structure provided in an embodiment of this application.

[0035] Figure 2 This is a cross-sectional view of the circuit breaker in the open state as provided in the embodiments of this application.

[0036] Figure 3 This is a cross-sectional view of the circuit breaker in the closed state as provided in the embodiments of this application.

[0037] Figure 4 This is a schematic diagram of the support frame provided in an embodiment of this application.

[0038] Figure 5 This is a schematic diagram showing the positional relationship between the indicator and the support frame when the circuit breaker is in the open state, as provided in the embodiments of this application.

[0039] Figure 6 Schematic diagram of the structure of the indicator provided in the embodiments of this application Figure 1 .

[0040] Figure 7 Schematic diagram of the structure of the indicator provided in the embodiments of this application Figure 2 .

[0041] Explanation of reference numerals in the attached figures:

[0042] 1-Shell, 11-Top cover, 111-Viewing window, 12-Middle cover, 13-Base, 14-Support frame, 141-First bend,

[0043] 1411 - Clearance groove, 142 - Second bend, 143 - Third bend, 144 - Fourth bend, 1441 - Limiting groove

[0044] 2-Indicator, 21-First extension, 22-Second extension, 23-Firming plate, 3-Moving contact, 4-Drive shaft, 41-Drive unit, 5-Elastic element, 6-Micro switch. Detailed Implementation

[0045] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0046] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims and drawings of this application are intended to cover non-exclusive inclusion.

[0047] The term "embodiment" as used herein means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of the phrase "embodiment" in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0048] The directional terms appearing in the following description refer to the directions shown in the figures and are not intended to limit the specific structure of this application. For example, in the description of this application, the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the figures. They are only for the convenience of describing this application and simplifying the description, 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 this application.

[0049] Furthermore, the terms "first," "second," etc., in the specification and claims of this application or in the aforementioned drawings are used to distinguish different objects rather than to describe a specific order, and may explicitly or implicitly include one or more of the features.

[0050] In the description of this application, unless otherwise stated, "multiple" means two or more (including two), and similarly, "multiple groups" means two or more (including two groups).

[0051] In existing circuit breakers with indicators, the indicator is typically driven to rotate through a multi-stage linkage mechanism such as levers and gears to indicate whether the circuit breaker is in the closed or open state. However, this structure is complex, has a large number of parts, high production costs, and is difficult to assemble.

[0052] Please refer to Figures 1 to 3 As shown, this application embodiment provides a circuit breaker, which includes a housing 1, an indicator 2, a moving contact 3, a drive shaft 4, and an elastic element 5. The housing 1 is provided with a viewing window 111.

[0053] In specific implementation, such as Figures 1 to 3 As shown, the housing 1 may include a base 13, a middle cover 12 and a top cover 11. The middle cover 12 is mounted on the base 13 and the top cover 11 is mounted on the side of the middle cover 12 away from the base 13.

[0054] The view window 111 is located on the top cover 11. The size and shape of the view window 111 are not specifically limited here.

[0055] The specific connection method between the middle cover 12 and the base 13, and between the middle cover 12 and the top cover 11, is not limited here.

[0056] Furthermore, the housing 1 may also include a support frame 14, which is mounted on the middle cover 12. In practice, the support frame 14 can be mounted on the middle cover 12 by welding, snap-fitting, or screws. Of course, the support frame 14 can also be integrally formed with the middle cover 12.

[0057] In specific implementation, such as Figure 4 As shown, the support frame 14 may include a first bending portion 141, a second bending portion 142, a third bending portion 143 and a fourth bending portion 144.

[0058] The first bend 141, the second bend 142, the third bend 143, and the fourth bend 144 can all be plate-like structures, such as Figure 4 As shown.

[0059] The two opposite sides of the first bend 141 are connected to one side of the second bend 142 and one side of the third bend 143, respectively. The first bend 141 can be perpendicular to the second bend 142, and the first bend 141 can also be perpendicular to the third bend 143. The bending direction of the second bend 142 relative to the first bend can be opposite to the bending direction of the third bend 143 relative to the first bend 141.

[0060] One side of the fourth bend 144 can be connected to the other side of the first bend 141, and the bending direction of the fourth bend 144 relative to the first bend 141 can be the same as the bending direction of the second bend 142 relative to the first bend 141.

[0061] In actual processing, the first bent portion 141 can be connected to the second bent portion 142, the third bent portion 143 and the fourth bent portion 144 by welding or snap-fitting.

[0062] The support frame 14 can be formed by cutting and bending sheet metal. This is only an example and is not intended to be a specific limitation.

[0063] This not only avoids stress concentration issues caused by connection methods such as snap-fit ​​or welding, ensuring higher dimensional accuracy and consistency, and improving the structural strength of the support frame 14, but also reduces the number of connection points, lowering the risk of failure due to loose connections, corrosion, or fatigue, and improving fatigue resistance. Furthermore, it reduces the number of parts and assembly steps of the support frame 14, simplifying the operation process.

[0064] The housing 1 has a receiving space, within which the indicator 2, moving contact 3, drive shaft 4, and elastic element 5 are all located. The housing 1 can accommodate the indicator 2, moving contact 3, drive shaft 4, and elastic element 5, providing a stable space for them to ensure that they can work normally without external interference.

[0065] Meanwhile, housing 1 provides positioning and support for indicator 2, moving contact 3, drive shaft 4, and elastic element 5, preventing displacement or damage to components housed within housing 1 during operation. Housing 1 can also withstand a certain amount of external pressure, protecting indicator 2, moving contact 3, drive shaft 4, and elastic element 5 from damage.

[0066] In addition, the housing 1 has a protective function, which can prevent moisture, dust, dirt and other impurities from entering the interior of the housing 1, thereby avoiding corrosion or damage to the indicator 2, moving contact 3, drive shaft 4 and elastic element 5 installed inside the housing 1.

[0067] In actual operation, the shell 1 can be made of plastic. Of course, it is not limited to this and the specific material depends on the actual situation.

[0068] The indicator 2 is rotatably mounted on the housing 1. In fact, the indicator 2 is rotatably mounted on the third bend 143 of the support frame 14, as shown below. Figure 5 As shown.

[0069] In a specific implementation, the middle part of the indicator 2 can be hinged to the third bent part 143 via a rivet. At this time, the indicator 2 can rotate relative to the third bent part 143 about the axis of rotation of the rivet.

[0070] The indicator 2 has a function end and an indicator end that are set opposite to each other. The indicator end is equipped with a circuit breaker opening indicator and a circuit breaker closing indicator.

[0071] Specifically, the trip indicator can be marked with "trip" or "OFF", and the closing indicator can be marked with "closing" or "ON". Of course, it is not limited to this in practice.

[0072] The indicator 2 has a first position and a second position relative to the housing 1. When the indicator 2 is in the first position, the trip indicator corresponds to the viewing window 111. The operator can observe the trip indicator through the viewing window 111 to know that the circuit breaker is in the tripped state.

[0073] When indicator 2 is in the second position, the closing indicator corresponds to the viewing window 111. The operator can observe the closing indicator through the viewing window 111 to know that the circuit breaker is in the closed state.

[0074] The moving contact 3 is rotatably mounted on the housing 1, and the moving contact 3 has a contact position and a disengagement position relative to the housing 1.

[0075] In fact, the circuit breaker provided in this application embodiment also includes a stationary contact, which is fixedly installed inside the housing 1. The moving contact 3 is used to contact or disengage from the stationary contact. When the moving contact 3 rotates relative to the housing 1, the moving contact 3 can contact or disengage from the stationary contact.

[0076] When the moving contact 3 is in contact with the stationary contact, the circuit breaker is in the closed state, and the circuit containing the circuit breaker is operating normally. When the moving contact 3 is out of contact with the stationary contact, the circuit containing the circuit breaker is open, and the circuit breaker is in the open state.

[0077] When the moving contact 3 is in the contact position, it is in contact with the stationary contact, and the circuit breaker is in the closed state. At this time, the indicator 2 is in the second position, and the closing indicator corresponds to the viewing window 111. The operator can observe the closing indicator through the viewing window 111 and know that the circuit breaker is in the closed state.

[0078] When the moving contact 3 is in the disengaged position, it is no longer in contact with the stationary contact, and the circuit breaker is in the open state. At this time, the indicator 2 is in the first position, and the open indicator corresponds to the viewing window 111. The operator can observe the open indicator through the viewing window 111 and know that the circuit breaker is in the open state.

[0079] The drive shaft 4 is rotatably mounted on the housing 1. The specific manner in which the drive shaft 4 is rotatably mounted on the housing 1 is not limited here.

[0080] The drive shaft 4 is used to drive the moving contact 3 to switch between the contact position and the disengagement position. When the drive shaft 4 rotates relative to the housing 1, it can synchronously drive the moving contact 3 to rotate relative to the housing 1, and make the moving contact 3 switch between the contact position and the disengagement position.

[0081] The drive shaft 4 has a drive section 41, which is used to abut against the action end to drive the indicator 2 to switch from a first position to a second position.

[0082] During the process of the drive shaft 4 driving the moving contact 3 to switch from the disengaged position to the contact position, the drive unit 41 can synchronously drive the indicator 2 to switch from the first position to the second position.

[0083] The two ends of the elastic element 5 act elastically on the housing 1 and the indicator 2 respectively, and apply a force to the working end to move closer to the driving part 41.

[0084] In fact, one end of the elastic element 5 can be installed on the support frame 14, and the other end of the elastic element 5 can be installed on the indicator 2 near the indicator end.

[0085] When the two ends of the elastic element 5 apply force to the support frame 14 and the indicator end respectively, the indicator 2 is driven to rotate, thereby causing the action end to rotate synchronously and move closer to the drive part 41.

[0086] When adopting the above technical solution, please combine it with Figure 2 and Figure 3 As shown, when the moving contact 3 is in the disengaged position, the indicator end can rotate clockwise under the action of the elastic element 5, so that the indicator 2 is in the first position. At this time, the trip indicator corresponds to the viewing window 111. The operator can observe the trip indicator through the viewing window 111 and know that the circuit breaker is in the tripped state.

[0087] At the same time, the actuating end rotates clockwise and comes into contact with the driving part 41.

[0088] During the process of the drive shaft 4 driving the moving contact 3 to switch from the disengaged position to the engaged position, the drive unit 41 pushes the actuating end to rotate counterclockwise. Correspondingly, the indicating end rotates counterclockwise, and the elastic element 5 is compressed, causing the indicating element 2 to switch from the first position to the second position. At this time, the closing indicator corresponds to the viewing window 111. The operator can observe the closing indicator through the viewing window 111 to know that the circuit breaker is in the closed state.

[0089] The circuit breaker provided in this application embodiment, by setting a driving part 41 on the driving shaft 4, and simultaneously setting an elastic element 5 and an indicator 2, causes the indicator 2 to move synchronously with the moving contact 3 under the action of the driving part 41 and the elastic element 5, switching between a first position and a second position to indicate whether the circuit breaker is in an open or closed state, providing the user with an accurate signal. This circuit breaker has a relatively simple structure, is easy to install and operate, shortens the production and installation cycle of the circuit breaker, and reduces the production cost of the circuit breaker.

[0090] As one possible approach, refer to Figures 5 to 7 As shown, the indicator 2 is provided with a first extension 21, and the elastic member 5 is sleeved on the outside of the first extension 21.

[0091] In this case, the elastic member 5 is sleeved outside the first extension 21, and the first extension 21 can support the elastic member 5 and provide a stable supporting force for the elastic member 5. At the same time, the first extension 21 can limit the elastic member 5, reduce the possibility of misalignment of the elastic member 5, and ensure that the elastic member 5 can apply a force to the actuating end to move closer to the driving part 41 so that the actuating end abuts against the driving part 41.

[0092] In practice, the first extension 21 can be fixedly installed on the indicator body by welding or snap-fitting. Of course, in actual situations, the first extension 21 can also be machined together with the indicator body.

[0093] In some embodiments, the housing 1 is provided with a clearance groove 1411 that cooperates with the first extension 21.

[0094] Specifically, the clearance groove 1411 can be formed on the fourth bend 144. In this case, the two ends of the elastic member 5 elastically act on the fourth bend 144 and the indicator body, respectively.

[0095] Of course, the clearance groove 1411 can also be formed on the first bend 141. In this case, the two ends of the elastic member 5 act elastically on the first bend 141 and the indicator body, respectively.

[0096] When the housing 1 is provided with a clearance groove 1411 that cooperates with the first extension 21, it is necessary to ensure that the width of the clearance groove 1411 is less than the size of the end of the elastic member 5 that contacts the housing 1, so as to prevent the elastic member 5 from coming out through the clearance groove 1411.

[0097] The clearance groove 1411 is provided so that when the indicator 2 switches from the first position to the second position, the first extension 21 can extend into the clearance groove 1411 to prevent the housing 1 from interfering with the movement of the indicator 2.

[0098] In addition, the provision of the clearance groove 1411 can reduce the amount of material used in the housing 1, saving costs and reducing the weight of the housing 1.

[0099] As an example, the first extension 21 is an arc-shaped extension, and the center of the first extension 21 coincides with the rotation center of the indicator 2.

[0100] Thus, as the indicator 2 rotates around its center of rotation, the first extension 21 rotates around its own center. During the rotation of the indicator 2, the first extension 21 does not produce eccentric motion, and the torque of the first extension 21 during rotation is balanced, reducing vibration and unnecessary forces, and improving the smoothness of the movement of the indicator 2.

[0101] As an optional approach, combined Figure 2 and Figure 5 As shown, the housing 1 provided in this embodiment of the application is also provided with a limiting groove 1441 that cooperates with the indicator 2. When the indicator 2 is in the first position, one side of the indicator 2 abuts against the groove wall of the limiting groove 1441.

[0102] like Figure 2 As shown, the moving contact 3 is in the disengaged position, and the indicator 2 is in the first position, with one side of the indicator 2 abutting against the wall of the limiting groove 1441. The limiting groove 1441 blocks the indicator 2 through its groove wall, preventing the indicator 2 from moving further, which can improve the accuracy of the indicator 2 in the first position and the moving contact 3 in the disengaged position. At the same time, it facilitates the alignment and matching of the indicator 2, the moving contact 3, and the housing 1 during installation.

[0103] In specific implementation, the limiting groove 1441 is formed on the support frame 14, and the limiting groove 1441 is formed on the first bend 141, such as... Figure 4 and Figure 5 As shown.

[0104] In some embodiments, the circuit breaker provided in this application further includes a micro switch 6, please refer to... Figure 2 , Figure 3 and Figure 5 As shown. The micro switch 6 is disposed on the housing 1, and the micro switch 6 can be disposed on the second bend 142.

[0105] The micro switch 6 can be installed on the second bend 142 by means of welding, snap-fit, threaded connection, etc. Of course, it is not limited to these methods.

[0106] The trigger terminal of the micro switch 6 is located on the side near the indicator 2. The micro switch 6 is electrically connected to the circuit breaker's circuit board. When the indicator 2 is in the first position, the indicator 2 can trigger the micro switch 6.

[0107] Thus, when indicator 2 is in the first position, it is in contact with the trigger terminal of microswitch 6, and microswitch 6 can be triggered by indicator 2. When indicator 2 switches from the first position to the second position, it disengages from the trigger terminal of microswitch 6. The circuit of microswitch 6 is also switched when indicator 2 switches between the first and second positions. Microswitch 6 is electrically connected to the circuit breaker's circuit board. The mechanical displacement of indicator 2 is converted into an electrical signal, which can be fed back to the control system or remote monitoring equipment to confirm the circuit breaker's operating status or perform interlocking control.

[0108] In practice, a buzzer or indicator light can be installed on the circuit board.

[0109] For example, when indicator lights are provided on the circuit board, the indicator lights can display red or green in different states, so that operators can determine whether the circuit breaker is in the open or closed state by the color of the indicator lights.

[0110] For example, when the moving contact 3 is in the disengaged position and the indicator 2 is in the first position, the indicator 2 can trigger the micro switch 6. The indicator 2 is electrically connected to the circuit board. In this case, the indicator light can show red, and the operator can determine that the circuit breaker is in the open state by the color of the indicator light.

[0111] When the moving contact 3 is in the contact position and the indicator 2 is in the second position, the indicator 2 disengages from the trigger terminal of the micro switch 6. In this case, the indicator light can display green, and the operator can determine that the circuit breaker is in the closed state by the color of the indicator light.

[0112] The microswitch 6 allows operators to observe the circuit breaker's open or closed state not only through the viewing window 111, but also through other means. This avoids misjudgment and enhances system reliability.

[0113] As an example, please combine Figures 5 to 7 As shown, the indicator 2 is provided with a second extension 22, which is used to trigger the micro switch 6.

[0114] The second extension 22 is provided to facilitate contact between the indicator 2 and the trigger end of the micro switch 6. When the indicator 2 reaches the first position, the second extension 22 can trigger the micro switch 6, ensuring that the triggering time of the micro switch 6 corresponds to the state of the indicator 2.

[0115] In practice, the second extension 22 can be fixedly installed on the indicator body by welding or snap-fitting. Of course, in actual cases, the second extension 22 can also be machined together with the indicator body.

[0116] In the embodiments provided in this application, the indicator body can be a plate-like structure, and the indicator 2 rotates in a plane parallel to the indicator body. The second extension 22 extends in a direction perpendicular to the surface of the plate-like indicator body.

[0117] As one possible implementation, the indicator 2 is provided with a stiffener 23, such as... Figure 7 As shown.

[0118] Thus, the stiffener 23 significantly improves the bending and torsional resistance of the indicator 2, effectively reducing the possibility of deformation under frequent movement or external impact. The stiffener 23 can also distribute the load, reduce the risk of local fracture, and enhance the structural strength of the indicator 2.

[0119] In practice, the stiffening rib 23 can be set on the indicator body, and the stiffening rib 23 can be set along the length direction of the indicator body. The stiffening rib 23 can be fixedly installed on the indicator body by welding, bonding, or snap-fitting. Of course, in actual cases, the stiffening rib 23 can also be processed and formed together with the indicator body.

[0120] In practice, the elastic element 5 can be a spring sheet. In the embodiments provided in this application, the elastic element 5 can be a spring.

[0121] In this way, the force of the spring can be accurately calculated, making it easy to match the force applied to the actuating end towards the driving part 41 according to actual needs. The spring has functions such as reset, buffering, and energy storage. When the moving contact 3 is in the contact position, the indicator 2 is in the second position, the driving part 41 abuts against the actuating end, the spring is compressed, and the spring can store a portion of energy. When the moving contact 3 switches from the contact position to the disengagement position, the spring can release energy, driving the indicator end to move closer to the micro switch 6, causing the indicator 2 to trigger the micro switch 6. At the same time, the actuating end moves closer to the driving part 41 and abuts against the driving part 41, so that when the moving contact 3 switches from the disengagement position to the contact position, it can synchronously drive the indicator 2 to switch from the first position to the second position.

[0122] The spring also has a better buffering function. When the indicator 2 switches between the first position and the second position, it can play a better protective role for the indicator 2, effectively reducing the rigid contact between the indicator 2 and the drive part 41 and the groove wall of the limiting groove 1441, and can extend the service life of the indicator 2.

[0123] In one possible implementation, the indicator 2 is an integral structure, that is, during actual processing, the first extension 21, the indicator body, the stiffener 23, and the second extension 22 are processed together.

[0124] This not only avoids stress concentration issues caused by connection methods such as snap-fit ​​or welding, ensuring higher dimensional accuracy and consistency, and improving the structural strength of indicator 2, but also reduces the number of connection points, lowering the risk of failure due to loose connections, corrosion, or fatigue, and improving fatigue resistance. Furthermore, it reduces the number of parts and assembly steps for indicator 2, simplifying the operation process.

[0125] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, "connection" or "joining" in mechanical structures can refer to a physical connection. A physical connection can be a fixed connection, such as a connection secured by fasteners, such as a connection secured by screws, bolts, or other fasteners; a physical connection can also be a detachable connection, such as a snap-fit ​​or interlocking connection; a physical connection can also be an integral connection, such as a connection formed by welding, bonding, or integral molding. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

Claims

1. A circuit breaker, characterized in that, include: A housing, on which a viewing window is provided; An indicator element is rotatably mounted on the housing; The indicator has a function end and an indicator end that are arranged opposite to each other, and the indicator end is provided with a circuit breaker opening indicator and a circuit breaker closing indicator; The indicator has a first position and a second position relative to the housing. When the indicator is in the first position, the open indicator corresponds to the viewing window; when the indicator is in the second position, the close indicator corresponds to the viewing window. The moving contact is rotatably mounted on the housing; The moving contact has a contact position and a disengagement position relative to the housing; when the moving contact is in the contact position, the indicator is in the second position; when the moving contact is in the disengagement position, the indicator is in the first position. The drive shaft is rotatably mounted on the housing; The drive shaft is used to drive the moving contact to switch between the contact position and the disengagement position; The drive shaft has a drive section for abutting against the actuating end to drive the indicator to switch from the first position to the second position; An elastic element has two ends that elastically act on the housing and the indicator, respectively, to apply a force to the actuating end toward the driving part.

2. The circuit breaker according to claim 1, characterized in that, The indicator is provided with a first extension; the elastic element is sleeved on the outside of the first extension.

3. The circuit breaker according to claim 2, characterized in that, The housing has a clearance groove that mates with the first extension.

4. The circuit breaker according to claim 2, characterized in that, The first extension is an arc-shaped extension, and the center of the first extension coincides with the rotation center of the indicator.

5. The circuit breaker according to claim 1, characterized in that, The housing is also provided with a limiting groove that cooperates with the indicator. When the indicator is in the first position, one side of the indicator abuts against the groove wall of the limiting groove.

6. The circuit breaker according to claim 1, characterized in that, The circuit breaker also includes a micro switch disposed in the housing; the micro switch is electrically connected to the circuit breaker's circuit board; when the indicator is in the first position, the indicator can trigger the micro switch.

7. The circuit breaker according to claim 6, characterized in that, The indicator is provided with a second extension, which is used to trigger the micro switch.

8. The circuit breaker according to claim 1, characterized in that, The indicator is provided with stiffening plates.

9. The circuit breaker according to claim 1, characterized in that, The elastic element is a spring.

10. The circuit breaker according to claim 1, characterized in that, The indicator is a one-piece structure.

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