Plug-in circuit breaker and power cabinet

Abstract

Embodiments of the present application provide a plug-in circuit breaker applied to a power cabinet, and the power cabinet. The circuit breaker comprises a housing and a trip mechanism and an operating mechanism which are arranged in the housing. The trip mechanism comprises a trip rod and a trigger assembly; the trip rod is connected to the operating mechanism; the trip rod rotates around an axial extension direction of the trip rod, and is used for driving a moving contact and a static contact of the operating mechanism to be in contact with or separated from each other; the trigger assembly is arranged on a side wall of the housing in the axial extension direction of the trip rod, and is located on one end of the trip rod in the axial extension direction; at least part of the trigger assembly is located on the outer side of the side wall, and is used for linkage with an external structural member; and the trigger assembly is used for driving the trip rod to rotate around the axial extension direction of the trip rod. The present invention is suitable for a mounting method for circuit breakers having placement surfaces in the width direction, and when the width direction of the circuit breakers is arranged in the height direction of a power cabinet, an automatic trip function can be achieved.

Description

Plug-in circuit breakers and power cabinets

[0001] This application claims priority to Chinese Patent Application No. 202422148027.7, filed on September 2, 2024, entitled "Plug-in Circuit Breaker and Power Supply Cabinet", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the technical field of circuit breakers, and more particularly to a pluggable circuit breaker and power supply cabinet. Background Technology

[0003] To achieve hot-swappable circuit breakers, related technologies typically include a housing, a tripping mechanism, and a push-button. The axial extension direction of the tripping mechanism's shaft extends along the width of the housing, while the push-button is positioned on the side wall along the height of the housing. When the circuit breaker is inserted into the cabinet, the cabinet's compression causes the push-button to move inward along the height of the cabinet, triggering the tripping mechanism to trip, thus enabling hot-swappable circuit breakers. However, in some installation scenarios, such as placing multiple circuit breakers within a limited cabinet space, the circuit breakers need to be rotated 90 degrees before being arranged. In this case, the arrangement direction of the multiple circuit breakers is the height direction. Since the push-button is positioned along the height direction, the cabinet cannot fully utilize the internal space in this arrangement direction, hindering the miniaturization of the cabinet in this configuration. Summary of the Invention

[0004] Embodiments of this application provide a pluggable circuit breaker and power cabinet to solve the problem of miniaturization of the cabinet when installing multiple circuit breakers.

[0005] In a first aspect, embodiments of this application provide a circuit breaker applied in a power cabinet. The circuit breaker includes a housing and a tripping mechanism and an operating mechanism disposed in the housing. The tripping mechanism includes a tripping rod and a trigger assembly. At least a portion of the trigger assembly is located outside the housing. The trigger assembly is used to drive the tripping rod to rotate axially around the tripping rod. The rotation of the tripping rod is used to drive the moving contact and stationary contact of the operating mechanism to contact or separate. Along the axial extension direction of the tripping rod, the operating mechanism and the trigger assembly are distributed at opposite ends of the tripping rod.

[0006] The circuit breaker in this embodiment is suitable for certain application scenarios, such as when multiple circuit breakers need to be installed in a power cabinet. This requires maximizing the space in the width direction of the cabinet, meaning that while accommodating multiple circuit breakers, the width dimension of the cabinet should be minimized. Since the trigger assembly is located at one end of the trip rod's axial direction, and the trigger assembly is situated on the side wall of the housing along the axial extension direction of the trip rod, the design of the trip rod typically hinders miniaturization of the housing in this direction. To minimize the width dimension of the cabinet housing multiple circuit breakers, the depth of the housing can be aligned with the depth of the cabinet, and the axial extension direction of the trip rod can be aligned with the height of the cabinet. In other words, the width of the housing is aligned with the height of the cabinet, and the height of the housing is aligned with the width of the cabinet. Placing the circuit breakers in this way within the cabinet allows for accommodating as many circuit breakers as possible in the width direction of the cabinet. Furthermore, since the trigger assembly is located on the side wall of the housing along the axial extension direction of the trip rod, the external structural components that interact with the trigger assembly need to be positioned corresponding to the side wall of the housing along the axial extension direction of the trip rod, i.e., corresponding to the side wall in the width direction of the housing. Since the arrangement of multiple circuit breakers within the cabinet is consistent with the height direction of the housing, external structural components can be avoided in the height direction of the housing, i.e., the width direction of the cabinet. In other words, in the width direction of the cabinet, the space between the housings of two adjacent circuit breakers does not need to be occupied by external structural components, effectively reducing the overall size of multiple circuit breakers in the width direction of the cabinet, thus enabling miniaturization of the cabinet's width dimension. In addition, during the insertion and removal of the circuit breaker from the connector, the trigger assembly, in conjunction with the external structural components, can rotate the trip rod. The rotation of the trip rod triggers the operating mechanism to release and unlock, thereby separating the moving and stationary contacts to trip the circuit breaker, ensuring safety during hot-swapping.

[0007] In some embodiments, the operating mechanism includes a rotating shaft, with a moving contact mounted on the rotating shaft. Rotation of the trip lever drives the rotating shaft to rotate, and the rotation of the rotating shaft causes the moving contact to contact or separate from the stationary contact. The axial extension direction of the trip lever is parallel to the axial extension direction of the rotating shaft. In this embodiment, because the axial extension direction of the trip lever is parallel to the axial extension direction of the rotating shaft, the steering force of the trip lever can be easily transmitted to the rotating shaft through the transmission assembly. This simplifies the structure of the transmission assembly, reduces system errors, and improves transmission accuracy. This allows the rotation of the trip lever to trigger the operating mechanism to trip and unlock during circuit breaker insertion and removal, precisely controlling the circuit breaker's opening or closing and improving its safety performance.

[0008] In some embodiments, the axial extension direction of the tripping rod is consistent with the width direction of the housing, and the width dimension of the housing is greater than the height dimension of the housing; the operating mechanism includes an operating handle, which is located on the front wall of the housing in the depth direction, and the operating handle is used to drive the rotating shaft to rotate. In this embodiment, the width dimension of the housing is greater than the height dimension of the housing. Therefore, after multiple circuit breakers are installed in the insertion frame, the width direction of the housing is the same as the height direction of the insertion frame, and the width dimension of the housing is greater than the height dimension of the housing. Moreover, since the triggering component is located on the side wall in the width direction of the housing, while the external structural components are located on the top or bottom wall of the insertion frame, the spacing between adjacent circuit breakers in the width direction of the insertion frame can be effectively reduced, which is beneficial for the miniaturization design of the insertion frame in the width direction.

[0009] In some embodiments, the triggering component includes a cantilever link and a first cantilever and a second cantilever located at both ends of the cantilever link in its axial extension direction. The cantilever link is rotatably mounted on a side wall, and its axial extension direction is consistent with that of the trip lever. The extension directions of the first and second cantilever arms are both perpendicular to the axial extension direction of the cantilever link. The second cantilever is located on the outer side of the side wall and is used to link with an external structural component to drive the cantilever link to rotate. The trip lever is provided with a first linkage rod, the extension direction of which is perpendicular to the axial extension direction of the trip lever. The first cantilever is provided with a first roller, the axial extension direction of which is consistent with that of the cantilever link. The first roller coincides with the first linkage rod in its radial direction. In this embodiment, since the first linkage rod is located on the trip rod, when the first linkage rod rotates around the axial extension direction of the trip rod, it will cause the trip rod to rotate around its axial extension direction. The first cantilever is located on the cantilever link, so the rotation of the cantilever link around its axial extension direction can cause the first cantilever to rotate around the axial extension direction of the cantilever link. The first roller is located on the first cantilever, so the rotation of the first cantilever can also cause the first roller to rotate around the axial extension direction of the cantilever link. The first linkage rod is located on the path of the first roller as the first cantilever rotates around the axial extension direction of the cantilever link. Therefore, when the first roller rotates around the axial extension direction of the cantilever link, it can cause the first linkage rod to rotate around the axial extension direction of the trip rod, thereby causing the trip rod to rotate. The rotation of the trip rod triggers the operating mechanism to release and unlock, so as to realize the contact or separation of the moving contact and stationary contact of the operating mechanism, and cause the circuit breaker to close or open. Furthermore, since the trip rod and the cantilever link are not directly fixedly connected, but rather indirectly driven to rotate through the cooperation between the first linkage rod and the first roller, it is not necessary to ensure that the central axis of the trip rod coincides with the central axis of the cantilever link. In other words, the installation accuracy of the relative positions of the trip rod and the cantilever link is not critical, effectively reducing the manufacturing difficulty of the circuit breaker. Moreover, because this embodiment indirectly drives the trip rod to rotate through the cooperation between the first linkage rod and the first roller, it avoids the triggering component from mistakenly triggering the trip rod to rotate during vibration.

[0010] In some embodiments, the triggering assembly further includes a third cantilever mounted on the cantilever link, the extension direction of which is perpendicular to the axial extension direction of the cantilever link. A groove is provided within the housing, and the triggering assembly also includes a return spring disposed within the groove. The third cantilever and the return spring coincide in the depth direction of the groove. In this embodiment, because a return spring is provided between the third cantilever and the bottom wall of the groove, the third cantilever can be driven to rotate in its natural state. Furthermore, due to the placement of the return spring, the second roller can always maintain contact with the push-in lifting surface, the tripping surface, and the pull-out lifting surface during circuit breaker insertion and removal. This ensures that the push-in lifting surface, the tripping surface, and the pull-out lifting surface can always drive the second roller to rotate the second cantilever in real time during circuit breaker insertion and removal, thereby ensuring operational accuracy.

[0011] In some embodiments, the triggering assembly further includes a fourth cantilever mounted on the cantilever link, the extension direction of the fourth cantilever being perpendicular to the axial extension direction of the cantilever link; the triggering assembly also includes a limiting member fixed to the housing, the limiting member being located on the rotation path of the fourth cantilever. In this embodiment, since the limiting member is located on the rotation path of the fourth cantilever, after the fourth cantilever rotates a certain angle around the axial extension direction of the cantilever link, it will be blocked by the limiting member, thus limiting the fourth cantilever from continuing to rotate, and consequently limiting the second cantilever from continuing to rotate. Under the action of the limiting member, when the circuit breaker is completely pulled out of the insertion frame, the limiting member can also limit the fourth cantilever to a specified position, thereby limiting the second cantilever to a specified position, so as to ensure the linkage between the second roller and the first stop block when the insertion frame is inserted again.

[0012] In some embodiments, the cantilever link includes a first link and a second link, with the first link and the second link extending in the same axial direction. The first link has a limiting groove at its end facing the second link, and the bottom wall of the limiting groove has a threaded hole. The second link has a limiting protrusion at its end facing the first link, and the limiting protrusion is installed within the limiting groove. The second link also has a fixing hole extending through it along its axial direction. The trigger assembly further includes a bolt, which passes through the fixing hole and connects to the threaded hole. Because the first link and the second link are detachably connected, there is no need to create a notch in the side wall; only a through hole is needed to easily install the cantilever link onto the side wall.

[0013] In some embodiments, the triggering component further includes a second roller disposed on the second cantilever, the axial extension direction of the second roller being consistent with the axial extension direction of the cantilever link. In the axial extension direction of the cantilever link, the cantilever link and the second roller are located on opposite sides of the second cantilever. The external structural component includes a first stop block, which includes a push-in lifting surface, a tripping surface, and a pull-out lifting surface. In the height direction of the housing, the distance between the tripping surface and the central axis of the cantilever link is L1, the distance between the pull-out lifting surface and the central axis of the cantilever link is L2, and the distance between the push-in lifting surface and the central axis of the cantilever link is L3, where L1≤L2 and L1≤L3. The distance between the central axis of the second roller and the central axis of the cantilever link is L4, where L4>L1. In this embodiment, since L4>L1, during the insertion and removal process of the circuit breaker from the frame, it can be ensured that the cantilever contacts and acts with the push-in lifting surface, the tripping surface, and the pull-out lifting surface. Since L1≤L2, when the circuit breaker is inserted into the socket, that is, during the process of inserting the connector into the plug-in structure, when the second roller contacts the push-in lifting surface, it can drive the second roller to rotate around the axial extension direction of the cantilever connecting rod and move the second roller to the tripping surface. When on the tripping surface, the tripping rod separates the moving contact and the stationary contact, causing the circuit breaker to trip. This prevents electrical arcing during the insertion and removal of the connector into the plug-in structure, avoids the generation of electric arcs, and ensures the safety of the circuit breaker during insertion. Since L1≤L3, when the circuit breaker is pulled out of the self-insertion frame, that is, during the process of pulling out the self-insertion structure of the connector plug, when the second roller contacts the pull-out lifting surface, the pull-out lifting surface can drive the second roller to rotate around the axial extension direction of the cantilever connecting rod and move the second roller to the tripping surface. When on the tripping surface, the tripping rod separates the moving contact and the stationary contact, so that the circuit breaker trips, thereby preventing electrical arcing during the process of pulling out the self-insertion structure of the connector plug, avoiding the generation of electric arc, and ensuring the safety of the circuit breaker when it is pulled out.

[0014] In some embodiments, the circuit breaker further includes an indicating mechanism, which includes a fixed base, a rotating shaft fixed on the fixed base, an indicating rod fixed on the rotating shaft, and a torsion spring sleeved on the rotating shaft. The fixed base is fixed to the housing, the axial direction of the rotating shaft is consistent with the axial direction of the cantilever connecting rod, one end of the torsion spring is connected to the fixed base, and the other end of the torsion spring is connected to the indicating rod. The fixed base is provided with a limiting hole through which the indicating rod passes. The size of the limiting hole is larger than the size of the portion of the indicating rod located within the limiting hole. A third roller is provided on the fourth cantilever, the axial extension direction of the third roller is consistent with the axial extension direction of the cantilever connecting rod, and the radial direction of the third roller coincides with one end of the indicating rod. The other end of the indicating rod is provided with a first indicating surface and a second indicating surface. The arrangement direction of the first indicating surface and the second indicating surface is consistent with the height direction of the housing. An observation window is provided on the front wall of the housing in the depth direction at a position corresponding to the indicating rod. The observation window is used to observe the first indicating surface or the second indicating surface. In this embodiment, a torsion spring applies torque to the indicator rod, driving it to rotate around the pivot until the second indicating surface faces the observation window. That is, when the circuit breaker is fully connected to or disconnected from the connector, the torsion spring drives the indicator rod to rotate until the second indicating surface faces the observation window. Since the indicator rod and cantilever linkage are not directly fixed but indirectly linked through a third roller and one end of the indicator rod, this effectively prevents the indicator rod from driving the cantilever linkage to rotate in the opposite direction during vibration, reducing the risk of false triggering of the trip lever by the triggering component. Furthermore, in this embodiment, the rotation of the cantilever linkage can simultaneously drive the trip lever and the indicator rod to rotate, thereby improving the consistency of the trip lever and indicator rod's actions and thus improving the accuracy of the indicating mechanism in indicating closing or opening.

[0015] In some embodiments, the triggering assembly includes a second cantilever and a cantilever link. The cantilever link is rotatably mounted on the side wall. The cantilever link and the trip lever are coaxially arranged. One end of the cantilever link extends into the housing and is fixed to one end of the trip lever. The other end of the cantilever link extends out of the side wall and is fixed to the second cantilever. The extension direction of the second cantilever is perpendicular to the axial extension direction of the cantilever link. The second cantilever is used to link with external structural components to drive the cantilever link to rotate. In this embodiment, since the cantilever link and the trip lever are coaxially arranged and directly fixed together, direct transmission is possible, which can improve the transmission accuracy of the cantilever link and the trip lever, thereby improving the safety performance of the circuit breaker during hot-swapping. Moreover, the triggering assembly in this embodiment has a simple structure, high stability, and low material cost.

[0016] In some embodiments, the triggering component includes a button mounted on a side wall, movable relative to the side wall in the axial extension direction of the trip rod. The button includes a first pushing surface located inside the housing and a second pushing surface located outside the housing, positioned at opposite ends of the button in the axial extension direction of the trip rod. The tripping mechanism further includes a first linkage rod mounted on the trip rod, the extension direction of which is perpendicular to the axial extension direction of the trip rod. The first pushing surface and the first linkage rod face each other in the axial extension direction of the trip rod. The second pushing surface is used to link with an external structural component, driving the button to move along the axial extension direction of the trip rod. In this embodiment, when the button moves toward the trip rod, the first pushing surface presses against the first linkage rod. Under the action of the first pushing surface, the first linkage rod rotates around the axial extension direction of the trip rod. Since the first linkage rod is mounted on the trip rod, it can also drive the trip rod to rotate, thereby causing the moving contact and stationary contact to contact or separate, thus realizing the closing or opening of the circuit breaker. Since the trip lever and the button are not directly fixedly connected, but indirectly driven to rotate through the cooperation between the first linkage rod and the first push surface, the cooperation between the first linkage rod and the first roller can prevent the triggering component from accidentally triggering the trip lever to rotate during vibration.

[0017] In some embodiments, the triggering component further includes an outer frame fixed to the housing. The outer frame includes a guide groove whose depth direction coincides with the axial extension direction of the trip lever. A guide hole is formed in the bottom wall of the guide groove. The button is inserted into the guide groove and passes through the guide hole. The button is movable relative to the outer frame in the depth direction of the guide groove. In this embodiment, the guide groove and guide hole enable the button to move precisely along a preset path, thereby improving the accuracy of the engagement between the button and the trip lever and enhancing the safety performance of the circuit breaker during hot-swapping.

[0018] In some embodiments, the button further includes an undercut structure and a limiting step surface. In the axial extension direction of the release rod, the undercut structure and the limiting step surface are located on opposite sides of the bottom wall of the guide groove. The dimensions of both the undercut structure and the limiting step surface are larger than the size of the guide hole, and the dimension of the portion of the button located between the undercut structure and the limiting step surface is smaller than the size of the guide groove. In this embodiment, by setting the undercut structure and the limiting step surface, the dimensions of both the undercut structure and the limiting step surface are larger than the size of the guide hole, which can prevent the button from detaching from the outer frame, thereby limiting the displacement distance of the button in the axial extension direction of the release rod. Furthermore, the undercut structure design facilitates the button passing through the guide hole and also facilitates disengaging the button from the undercut structure and guide hole during maintenance, allowing the button to be removed from the outer frame.

[0019] In some embodiments, the button has a hollowed-out area in the middle, located between the first and second pushing surfaces in the axial extension direction of the tripping lever. The button also includes a limiting shaft located in the hollowed-out area, with its axial extension direction aligned with that of the tripping lever. The trigger assembly further includes a return spring, which is sleeved on the limiting shaft and located in the hollowed-out area, between the button and the bottom wall of the guide groove. In this embodiment, when the second pushing surface of the button is not subjected to the force applied by the second stop, the return spring applies a spring force to the button, driving it to return to a state partially facing the side wall. This allows for interaction with the push-in lifting surface, tripping surface, and pull-out lifting surface on the second stop during subsequent insertion and removal of the circuit breaker.

[0020] In some embodiments, the external structural component includes a second stop for linkage with the second pushing surface. The second stop includes a pushing-in lifting surface, a tripping surface, and a pulling-out lifting surface. In the axial extension direction of the tripping rod, the distance between the tripping surface and the side wall is L5, the distance between the pushing-in lifting surface and the side wall is L6, and the distance between the pulling-out lifting surface and the side wall is L7, wherein L5≤L6 and L5≤L7. The distance between the end of the tripping rod facing the trigger assembly and the tripping surface is L8, and the length of the button in the axial extension direction of the tripping rod is L9, wherein L8<L9. In this embodiment, since L8<L9, when the button is pushed into the lifting surface or pulled out of the lifting surface and moves towards the tripping rod, when the button moves to the tripping surface, the first pushing surface of the button will necessarily be able to drive the first linkage rod to rotate by a certain angle to realize the rotation of the tripping rod. Furthermore, since L5 ≤ L6, when the circuit breaker is pushed into the insertion frame, the second pushing surface gradually moves to the tripping surface under the action of the pushing-in lifting surface. During this process, the pushing-in lifting surface can push the button towards the tripping lever, thereby causing the first linkage rod to rotate. Similarly, since L5 ≤ L7, when the circuit breaker is pulled out of the insertion frame, the second pushing surface gradually moves to the tripping surface under the action of the pulling-out lifting surface. During this process, the pulling-out lifting surface can push the button towards the tripping lever, thereby causing the first linkage rod to rotate. When the button moves to the tripping surface position, the moving contact and the stationary contact separate, and the circuit breaker is in the open state. This prevents electrical arcing during the insertion and removal of the connector and the plug-in mechanism, avoids the generation of electric arcs, and ensures safety when the circuit breaker is removed.

[0021] In some embodiments, the circuit breaker further includes an indicator rod on the button, the indicator rod facing the front wall in the depth direction of the housing, and a first indicator surface and a second indicator surface at one end of the indicator rod facing the front wall. The first and second indicator surfaces are arranged along the axial extension direction of the trip rod. An observation window is provided on the front wall at a position corresponding to the indicator rod, and the observation window is used to observe the first and second indicator surfaces. In this embodiment, since the indicator rod is located on the button, when the button moves along the axial direction of the trip rod, it causes the indicator rod to move along the axial direction of the trip rod as well. Since the first and second indicator surfaces are arranged along the axial extension direction of the trip rod, when the button moves to different positions, the first and second indicator surfaces can also change to different positions. Specifically, when the second pushing surface of the button moves to the trip surface, the trip rod rotates to separate the moving contact from the stationary contact. At this time, the first indicator surface is directly opposite the observation window, indicating that the circuit breaker is in the open state. When the second push surface of the button moves to the push-in lifting surface or pull-out lifting surface, the trip lever rotates to make the moving contact contact the stationary contact. At this time, the second indicator surface is directly opposite the observation window to indicate that the circuit breaker is in the closed state.

[0022] In some embodiments, the circuit breaker further includes an indicating mechanism located at the other end of the trip lever in the axial extension direction. The indicating mechanism includes an outer frame and a button. The outer frame is fixed to the housing and includes a guide groove whose depth direction is consistent with the axial extension direction of the trip lever. A guide hole is provided on the bottom wall of the guide groove. The button is inserted into the guide groove and passes through the guide hole. The button is movable relative to the outer frame in the depth direction of the guide groove. The rotation of the trip lever causes the button to move relative to the outer frame along the axial extension direction of the trip lever. The indicating mechanism also includes an indicating rod provided on the button. The indicating rod faces the front wall of the housing in the depth direction. A first indicating surface and a second indicating surface are provided at one end of the indicating rod facing the front wall. The first indicating surface and the second indicating surface are arranged along the axial extension direction of the trip lever. An observation window is provided on the front wall at a position corresponding to the indicating rod. The observation window is used to observe the first indicating surface or the second indicating surface. In this embodiment, after the trigger component is linked with the external structural component, it drives the trip lever to rotate. The rotation of the trip lever drives the circuit breaker to close or open. At the same time, the trip lever drives the button to move along the axial direction of the trip lever. The movement of the button drives the indicator rod to move so that the first indicator surface or the second indicator surface moves to the observation window to indicate the open or closed status.

[0023] In some embodiments, the portion of the button passing through the guide hole is provided with a first pushing surface, and the tripping mechanism further includes a second linkage rod disposed on the other end of the tripping rod. The extension direction of the second linkage rod is perpendicular to the axial extension direction of the tripping rod, and the first pushing surface and the second linkage rod are directly opposite each other in the axial extension direction of the tripping rod. In this embodiment, under the action of the first linkage rod on the first pushing surface, the button can move along the axial extension direction of the tripping rod, so that the first indicating surface or the second indicating surface moves to the observation window to indicate the open or closed state.

[0024] In some embodiments, the circuit breaker further includes another tripping mechanism, which is located on both sides of the operating mechanism along the axial extension direction of the tripping rod. The other tripping mechanism includes another tripping rod, an outer frame, and a button. The other tripping rod is connected to the operating mechanism and rotates around the axial extension direction of the other tripping rod to drive the moving and stationary contacts of the operating mechanism to contact or separate. The outer frame is fixed to the housing and includes a guide groove whose depth direction is consistent with the axial extension direction of the other tripping rod. A guide hole is provided on the bottom wall of the guide groove. The button is inserted into the guide groove and passes through the guide hole. The button is movable relative to the outer frame in the depth direction of the guide groove. The button includes a second pushing surface located on the outside of the housing, which is used to link with external structural components. The circuit breaker also includes an indicator rod on the button, which faces the front wall of the housing in the depth direction. A first indicator surface and a second indicator surface are provided at one end of the indicator rod facing the front wall. The first and second indicator surfaces are arranged along the axial extension direction of the other tripping rod. An observation window is provided on the front wall at a position corresponding to the indicator rod, which is used to observe the first indicator surface or the second indicator surface. In this embodiment, the circuit breaker is equipped with two tripping mechanisms, thereby achieving redundancy and safety. This ensures the safety of hot-swapping the circuit breaker even if one of the tripping mechanisms malfunctions.

[0025] In some embodiments, the portion of the button passing through the guide hole is provided with a first pushing surface. The tripping mechanism also includes a second linkage rod disposed on another tripping rod. The extension direction of the second linkage rod is perpendicular to the axial extension direction of the other tripping rod, and the first pushing surface and the second linkage rod are directly opposite each other in the axial extension direction of the other tripping rod. In this embodiment, when the button moves toward the tripping rod, the first pushing surface presses against the first linkage rod. Under the action of the first pushing surface, the first linkage rod rotates around the axial extension direction of the tripping rod. Since the first linkage rod is disposed on the tripping rod, the first linkage rod can also drive the tripping rod to rotate, thereby causing the moving contact and the stationary contact to contact or separate, so as to realize the closing or opening of the circuit breaker.

[0026] Secondly, embodiments of this application provide a power cabinet, which includes a cabinet body, a socket frame, and multiple pluggable circuit breakers as described in any of the first aspects above. The socket frame is disposed within the cabinet body, and the multiple pluggable circuit breakers are arranged within the socket frame along the width direction of the cabinet body, with the width direction of the multiple pluggable circuit breakers consistent with the height direction of the cabinet body. External structural components are disposed on the top or bottom wall of the socket frame along the height direction of the cabinet body. In this embodiment, in the width direction of the cabinet body, the space between the housings of two adjacent circuit breakers does not need to be occupied by external structural components, thereby effectively reducing the overall size of the multiple circuit breakers in the width direction of the cabinet body, so that the size of the cabinet body in the width direction can be miniaturized. In addition, since the triggering component can drive the circuit breaker to trip when the circuit breaker is plugged in and out with the connecting plug, the safety of the circuit breaker during hot-plugging can be ensured.

[0027] In some embodiments, the width dimension of the housing is smaller than the height dimension, and the depth dimension of the housing is consistent with the depth dimension of the cabinet. In this embodiment, after multiple circuit breakers are installed in the insertion frame, the width dimension of the housing is the same as the height dimension of the insertion frame, and the width dimension of the housing is larger than the height dimension. Moreover, since the triggering component is located on the side wall in the width direction of the housing, while the external structural components are located on the top or bottom wall of the insertion frame, the spacing between adjacent circuit breakers in the width direction of the insertion frame can be effectively reduced, which is beneficial for the miniaturization design of the insertion frame in the width direction. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0029] Figure 1 is a structural schematic diagram of a power cabinet provided in an embodiment of this application;

[0030] Figure 2 is a schematic diagram of the working principle of the power cabinet in the embodiment of Figure 1;

[0031] Figure 2A is a schematic diagram of another working principle of the power cabinet in the embodiment of Figure 1;

[0032] Figure 3 is a schematic diagram of the mechanism for assembling multiple circuit breakers in the socket of the power cabinet.

[0033] Figure 4 is a schematic diagram of the structure after a circuit breaker is installed in the insertion frame;

[0034] Figure 5 is a schematic diagram of the structure of a circuit breaker provided in an embodiment of this application;

[0035] Figure 6 is a structural schematic diagram of the circuit breaker in the embodiment of Figure 5 from another angle;

[0036] Figure 7 is a simplified schematic diagram of the assembly of the trip lever and part of the operating mechanism in the circuit breaker in the embodiment of Figure 5.

[0037] Figure 8 is a partial structural schematic diagram of the circuit breaker in the embodiment of Figure 5;

[0038] Figure 9 is an exploded view of the structure in the embodiment of Figure 8;

[0039] Figure 10 is a projection view of the circuit breaker and external structural components in the width direction of the housing.

[0040] Figure 11 is a schematic diagram of another structure of the cantilever linkage provided in the embodiment of this application;

[0041] Figure 12 is a schematic diagram of the second roller in the circuit breaker in this embodiment when it contacts the tripping surface;

[0042] Figure 13 is a schematic diagram of the second roller in the circuit breaker in this embodiment contacting the pushing-in lifting surface.

[0043] Figure 14 is a schematic diagram of another circuit breaker provided in an embodiment of this application;

[0044] Figure 15 is a partial structural schematic diagram of the circuit breaker in the embodiment of Figure 14;

[0045] Figure 16 is an exploded view of the structure in the embodiment of Figure 15;

[0046] Figure 17 is a schematic diagram of the second roller in the circuit breaker in this embodiment when it contacts the tripping surface;

[0047] Figure 18 is a schematic diagram of the second roller in the circuit breaker in this embodiment contacting the pushing-in lifting surface.

[0048] Figure 19 is a structural schematic diagram of another circuit breaker provided in an embodiment of this application;

[0049] Figure 20 is a partial structural schematic diagram of the circuit breaker in the embodiment of Figure 19;

[0050] Figure 21 is an exploded view of the structure in the embodiment of Figure 20;

[0051] Figure 22 is a schematic projection of part of the circuit breaker structure in the embodiment of Figure 14 in the width direction of the housing;

[0052] Figure 23 is a schematic diagram of the second pushing surface and the tripping surface in the circuit breaker in this embodiment when they are in contact.

[0053] Figure 24 is a schematic diagram of the second pushing surface in the circuit breaker in this embodiment when it comes into contact with the pushing lifting surface;

[0054] Figure 25 is a structural schematic diagram of another circuit breaker provided in an embodiment of this application;

[0055] Figure 26 is a structural schematic diagram of another circuit breaker provided in an embodiment of this application;

[0056] Figure 27 is a schematic diagram of another circuit breaker provided in an embodiment of this application.

[0057] Explanation of reference numerals in the attached drawings: X, depth direction of the housing; Z, height direction of the housing; Y, width direction of the housing; Y, axial extension direction of the tripping rod; Y, axial extension direction of the cantilever linkage; 1, power cabinet; 2, cabinet body; 3, power module; 4, circuit breaker; 5, external structural component; 6, insertion frame; 6a, top wall; 6b, bottom wall; 7, connector plug; 10, tripping mechanism; 11, tripping rod; 12, trigger assembly; 121, cantilever linkage; 121a, first rod; 121b, second rod; 1210, 1211 Fixing hole; 1212 Limiting groove; 1213 Limiting protrusion; 1214 Threaded hole; 1215 Fixing hole; 1216 Bolt; 1217 Snap ring; 122 First cantilever; 123 Second cantilever; 124 First roller; 125 Second roller; 126 Fourth cantilever; 127 Third cantilever; 128 Return spring; 129 Third roller; 130 Fixing base; 1301 Limiting component; 131 Button; 1311 First pushing surface; 1312 Second pushing surface; 1313 Inverted structure; 1314 Limiting stepped surface; 1315 Hollowed-out area; 1316 Limiting shaft; 132 Outer frame; 1321 Guide groove; 1322 Guide hole; 1323 Spring relief groove; 133 Return spring; 15. First linkage rod; 16. Second linkage rod; 20. Operating mechanism; 21. Moving contact; 22. Stationary contact; 23. Operating handle; 24. Transmission assembly; 25. Rotating shaft; 30. Insertion / removal mechanism; 40. Housing; 42. Front wall; 421. Observation window; 43. Bottom wall; 44. Top wall; 45. Side wall; 4501. Notch; 451. First side wall; 452. Second side wall; 46. Groove; 51. First stop; 511. Push-in lifting surface; 512. Tripping surface; 513. Pull-out lifting surface; 52. Second stop; 521. Push-in lifting surface; 522. Tripping surface; 523. Pull-out lifting surface; 60. Indicating mechanism; 61. Indicating rod; 611. First indicating surface; 612. Second indicating surface; 62. Fixed base; 621. Limiting hole; 63. 64. Rotating shaft; 70. Torsion spring; 61. Indicating mechanism. Detailed Implementation

[0058] The following section will first explain some of the terms used in the embodiments of this application.

[0059] The terms "first," "second," "third," "fourth," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0060] In this specification, the terms "vertical" and "parallel" are explained.

[0061] Perpendicularity: The perpendicularity defined in this application is not limited to an absolute perpendicular intersection (with an included angle of 90 degrees). It is permissible for non-absolute perpendicular intersections caused by factors such as assembly tolerances, design tolerances, and structural flatness. It is permissible for errors within a small angular range, such as an assembly error range of 80 to 100 degrees, which can all be understood as a perpendicular relationship.

[0062] Parallelism: The parallelism defined in this application is not limited to absolute parallelism. This definition of parallelism can be understood as basic parallelism, allowing for situations where the parallelism is not absolute due to factors such as assembly tolerances, design tolerances, and structural flatness. These situations may lead to the sliding mating part and the first door panel not being absolutely parallel, but this application also defines such situations as parallelism.

[0063] Circuit breakers are used in household power supply and distribution systems to connect, carry, and disconnect current between the power grid and household circuits. They are also used in the power supply and distribution systems of commercial or public electrical equipment. Specifically, when equipment (such as 4G or 5G base stations) needs to operate normally, users can switch the circuit breaker to the closed state to allow the power grid to supply the necessary power. When equipment needs maintenance or repair, users can switch the circuit breaker to the open state to facilitate these tasks. Additionally, during certain periods, the demand for some equipment (such as a 4G or 5G base station in a remote area) may be low or nonexistent; users can switch the circuit breaker to the open state to save energy.

[0064] Circuit breakers have two states: closed and open. When closed, they are energized; when open, they are de-energized.

[0065] Figure 1 is a structural schematic diagram of a power cabinet 1 provided in an embodiment of this application; Figure 2 is a working principle schematic diagram of the power cabinet 1 in the embodiment of Figure 1; Figure 3 is a schematic diagram of the mechanism in which multiple circuit breakers 4 are assembled in the insertion frame 6 of the power cabinet 1.

[0066] Referring to Figures 1 and 2, the power cabinet 1 includes a cabinet 2, a UPS (Uniinterruptible Power System) module, a power module 3, and multiple circuit breakers 4 housed within the cabinet 2. The UPS module includes a battery pack for power supply or energy storage. The power module 3 is used to convert DC power to AC power or vice versa; for example, the power module 3 can be an inverter. The circuit breakers 4 are used to connect or disconnect the power cabinet 1 from the external power grid.

[0067] For example, in some implementations, referring to Figure 2, the power cabinet 1 includes four circuit breakers 4, namely a first circuit breaker, a second circuit breaker, a third circuit breaker, and a fourth circuit breaker. The first and second circuit breakers are located between the UPS module and the power grid; the second circuit breaker is located between the UPS module and the power device to be powered; the third circuit breaker is located between the power grid and the bypass module; and the fourth circuit breaker is located between the power grid and the power device to be powered. The first circuit breaker ensures safe connection or disconnection between the UPS module and the power grid, and the second circuit breaker ensures safe connection or disconnection between the UPS module and the power device. If a problem occurs in the branch circuit where the UPS module is located, the third circuit breaker can be used to connect and power the power device using the bypass module. If both the branch circuit where the UPS module is located and the branch circuit where the bypass module is located fail, the fourth circuit breaker can connect or disconnect the power grid and the power device to be powered. It is understood that the bypass module also includes a battery pack for power supply or energy storage. It can be understood that the output of the bypass module can be directly connected to the power device. In some other implementations, as shown in Figure 2A, the output of the bypass module can also be connected to the power device through the second circuit breaker. That is, both the UPS module and the bypass module are connected to the power device through the second circuit breaker.

[0068] Referring to Figure 1, in some embodiments, the width dimension of the circuit breaker 4 is greater than the height dimension of the circuit breaker 4, and the depth dimension of the circuit breaker 4 is consistent with the depth dimension of the cabinet 2. In order to install multiple circuit breakers 4 in a limited space, multiple circuit breakers 4 are arranged along the width direction of the cabinet 2, and the width direction of multiple circuit breakers 4 is consistent with the height direction of the cabinet 2. This arrangement can effectively utilize the width dimension of the cabinet 2 to achieve the purpose of placing more circuit breakers 4 within the limited size of the cabinet 2.

[0069] Referring to Figure 3, each of the multiple circuit breakers 4 includes a tripping mechanism 10 and an operating mechanism 20. When the moving contact 21 (as shown in Figure 7) and the stationary contact 22 (as shown in Figure 7) of the operating mechanism 20 are in contact, the circuit breaker 4 is in the closed state. When the moving contact 21 and the stationary contact 22 of the operating mechanism 20 are separated, the circuit breaker 4 is in the open state. After the tripping mechanism 10 is linked with the external structural component 5, the tripping mechanism 10 triggers the operating mechanism 20 to trip and unlock, so that the moving contact 21 and the stationary contact 22 of the operating mechanism 20 are in contact or isolated, thereby driving the circuit breaker 4 to close or open.

[0070] Referring to Figure 3, in some embodiments, the power cabinet 1 further includes a socket frame 6, in which multiple circuit breakers 4 are installed. The height direction of the socket frame 6 is consistent with the width direction of the circuit breakers 4. Given the limited size of the cabinet 2, and to accommodate more circuit breakers 4, in order to achieve hot-swapping of the circuit breakers 4 and improve the safety performance of the circuit breakers 4 during insertion and removal, in some embodiments, the portion of the tripping mechanism 10 used for triggering with an external linkage is located on the side wall 45 in the width direction of the circuit breaker 4, while the external structural member 5 is located on the top wall 6a or bottom wall 6b of the socket frame 6. It can be understood that one tripping mechanism 10 corresponds to one external structural member 5. Since multiple circuit breakers 4 are installed in the same socket frame 6, and thus multiple circuit breakers 4 have multiple tripping mechanisms 10, the top wall 6a or bottom wall 6b of the socket frame 6 is provided with multiple external structural members 5. In this embodiment, after multiple circuit breakers 4 are installed in the insertion frame 6, the width direction of the circuit breaker 4 is the same as the height direction of the insertion frame 6, and the width dimension of the circuit breaker 4 is larger than the height dimension of the circuit breaker 4. Furthermore, since the tripping mechanism 10 of the multiple circuit breakers 4, which triggers the external structural member 5, is located on the side wall 45 in the width direction of the circuit breaker 4, and the external structural member 5 is located on the top wall 6a or bottom wall 6b of the insertion frame 6, the spacing between adjacent circuit breakers 4 in the width direction of the insertion frame 6 can be effectively reduced. This allows for full utilization of the space in the width direction of the insertion frame 6, enabling a larger number of circuit breakers 4 to be placed in the insertion frame 6. It should be noted that the width direction of the insertion frame 6 is consistent with the width direction of the cabinet 2.

[0071] Specifically, when the circuit breaker 4 is pulled out or inserted into the insertion frame 6, the triggering part of the tripping mechanism 10 located on the side wall 45 in the width direction of the circuit breaker 4 cooperates with the external structural member 5 located on the top wall 6a or bottom wall 6b of the insertion frame 6. This causes the tripping mechanism 10 to trigger the operating mechanism 20 to trip and unlock, and drives the moving contact 21 and the stationary contact 22 of the operating mechanism 20 to contact or isolate, thereby driving the circuit breaker 4 to close or open. Thus, the circuit breaker 4 can be safely hot-swapped, reducing maintenance costs.

[0072] It is understood that the number of circuit breakers 4 in the same insert frame 6 can be four as shown in the attached figure, or it can be two, three or other numbers of circuit breakers 4.

[0073] As shown in Figure 4, in some other embodiments, a circuit breaker 4 can be placed in a single insertion frame 6. The height direction of the insertion frame 6 is consistent with the width direction of the circuit breaker 4, and the height direction of the insertion frame 6 is consistent with the height direction of the cabinet 2. The width direction of the insertion frame 6 is consistent with the width direction of the cabinet 2. The part of the tripping mechanism 10 that triggers with the external linkage is located on the side wall 45 in the width direction of the circuit breaker 4, while the external structural member 5 is located on the top wall 6a or bottom wall 6b of the insertion frame 6. In this embodiment, multiple insertion frames 6 are required in the cabinet 2 to accommodate multiple circuit breakers 4. Since the part of the tripping mechanism 10 of multiple circuit breakers 4 that triggers with the external structural member 5 is located on the side wall 45 in the width direction of the circuit breaker 4, while the external structural member 5 is located on the top wall 6a or bottom wall 6b of the insertion frame 6, the overall size of a single circuit breaker 4 and insertion frame 6 in the width direction of the cabinet 2 can be effectively reduced. This allows for full utilization of the space in the width direction of the cabinet 2, enabling the placement of a larger number of circuit breakers 4 within the cabinet 2.

[0074] As shown in Figures 1 and 4, the circuit breaker 4 also includes a plug-in mechanism 30, and the power cabinet 1 includes a connector 7 disposed within the cabinet 2. The connector 7 is inserted into the plug-in mechanism 30 to achieve electrical connection between the connector 7 and the circuit breaker 4. The hot-swapping of the circuit breaker 4 mentioned in this application refers to the plugging and unplugging between the plug-in mechanism 30 of the circuit breaker 4 and the connector 7. In some embodiments, the connector 7 may be a copper busbar. It is understood that the connector 7 may be connected to both the external power grid and the power module 3 of the power cabinet 1, or it may be connected to both the equipment to be powered and the power module 3 of the power cabinet 1.

[0075] Figure 5 is a structural schematic diagram of a circuit breaker 4 provided in an embodiment of this application; Figure 6 is a structural schematic diagram of the circuit breaker 4 in the embodiment of Figure 5 from another angle.

[0076] Referring to Figures 5 and 6, in some embodiments, the circuit breaker 4 includes a housing 40 and a tripping mechanism 10, an operating mechanism 20, and a plug-in mechanism 30 disposed on or within the housing 40. The plug-in mechanism 30 is used to connect to a connector 7 (as shown in Figure 4) inside the cabinet 2 to connect the circuit breaker 4 to the branch circuit where it is to be operated. The operating mechanism 20 is used to control the closing or opening of the circuit breaker 4. The tripping mechanism 10 can also trigger the moving contact 21 and the stationary contact 22 of the operating mechanism 20 to contact or separate, thereby realizing the closing or opening of the circuit breaker 4. It can be understood that the circuit breaker 4 in this embodiment can not only be closed or opened by directly controlling the operating mechanism 20, but also indirectly controlled by controlling the tripping mechanism 10 to unlock, thereby realizing the closing or opening of the circuit breaker 4.

[0077] Referring to Figures 4-6, in some embodiments, the housing 40 is generally cuboid in shape. The housing 40 includes a rear wall and a front wall 42 opposite each other in the depth direction X, a bottom wall 43 and a top wall 44 opposite each other in the height direction Z, and two side walls 45 opposite each other in the width direction Y. For ease of description, the two side walls 45 are designated as the first side wall 451 and the second side wall 452.

[0078] It should be noted that the depth direction X of the housing 40 is consistent with the insertion and removal direction of the circuit breaker 4 relative to the insertion frame 6, the height direction Z of the housing 40 is consistent with the height direction of the circuit breaker 4 mentioned above, and the width direction Y of the housing 40 is consistent with the width direction of the circuit breaker 4 mentioned above.

[0079] Referring to Figures 4-6, in some embodiments, a socket (not shown) is provided on the rear wall for insertion into the connector 7. After the circuit breaker 4 is inserted into the socket 6, the front wall 42 is exposed. The operating handle 23 of the operating mechanism 20 protrudes from the front wall 42 to facilitate operation. It is understood that by moving the operating handle 23 (e.g., rotating or pressing), the moving contact 21 and the stationary contact 22 of the operating mechanism 20 can be made to contact or separate, thereby closing or opening the circuit breaker 4.

[0080] Referring to Figures 5 and 6, in some embodiments, the tripping mechanism 10 includes a tripping rod 11 and a trigger assembly 12. At least a portion of the trigger assembly 12 is located outside the sidewall 45 for linkage with the external structural member 5. For example, when the circuit breaker 4 is inserted into or removed from the insert frame 6, the portion of the trigger assembly 12 located outside the sidewall 45 is acted upon by the external structural member 5, thereby causing the trigger assembly 12 to drive the tripping rod 11 to rotate around its axial direction, that is, to rotate the tripping rod 11 around its central axis, i.e., around the rotation axis of the tripping rod 11. In other words, the axial extension direction Y of the tripping rod is consistent with the extension direction of the rotation axis of the tripping rod 11 and the extension direction of the central axis of the tripping rod 11. The tripping rod 11 can be cylindrical or other rod-shaped structures, and the axial extension direction Y of the tripping rod 11 is also the length direction of the tripping rod 11.

[0081] The trip lever 11 is connected to the operating mechanism 20, for example, to the transmission assembly 24 of the operating mechanism 20 (as shown in Figure 7). The transmission assembly 24 is used to connect the trip lever 11 to the moving contact 21 and the stationary contact 22 of the operating mechanism 20, so that the trip lever 11 can indirectly control the contact or separation of the moving contact 21 and the stationary contact 22 of the operating mechanism 20.

[0082] Specifically, the trip lever 11 rotates around its axial extension direction. The rotation of the trip lever 11 triggers the operating mechanism 20 to release the trip, thereby driving the transmission assembly 24 to contact or separate the moving contact 21 and the stationary contact 22, so that the circuit breaker 4 can be closed or opened. It should be noted that after the rotation of the trip lever 11 triggers the operating mechanism 20 to release the trip, the trip lever can directly act on the transmission assembly 24, thereby driving the moving contact 21 and the stationary contact 22 to contact or separate. Alternatively, after the rotation of the trip lever 11 triggers the operating mechanism 20 to release the trip, it can indirectly drive the transmission assembly 24 to drive the moving contact 21 and the stationary contact 22 to contact or separate.

[0083] Referring to Figures 1, 3, 5, and 6, in some embodiments, the trigger assembly 12 is disposed on the side wall 45 of the housing 40 in the axial extension direction Y of the trip rod 11, that is, on the side wall 45 in the width direction Y of the housing 40, for example, on the first side wall 451 or the second side wall 452. In other words, the width direction Y of the housing 40 is the same as the axial extension direction Y of the trip rod 11. The trigger assembly 12 is located at one end of the axial extension direction Y of the trip rod 11, that is, the arrangement direction of the trigger assembly 12 and the trip rod 11 is consistent with the axial extension direction Y of the trip rod 11. Specifically, the trigger assembly 12 and the trip rod 11 at least partially overlap in the axial extension direction Y of the trip rod 11. The circuit breaker 4 in this embodiment is suitable for some application scenarios, such as when multiple circuit breakers 4 need to be installed in the power cabinet 1, requiring full utilization of the space in the width direction of the cabinet 2. That is, while accommodating multiple circuit breakers 4, the width dimension of the cabinet 2 should be minimized. Since the trigger assembly 12 is located at one end of the axial direction of the trip lever 11, and the trigger assembly 12 is situated on the side wall 45 of the housing 40 in the axial extension direction Y of the trip lever 11, the arrangement of the trip lever 11 generally hinders miniaturization of the housing 40 in the axial extension direction Y of the trip lever 11. To minimize the width dimension of the cabinet 2 housing multiple circuit breakers 4, when placing the circuit breakers 4 inside the cabinet 2, the depth direction X of the housing 40 can be aligned with the depth direction of the cabinet 2, and the axial extension direction Y of the trip lever 11 can be aligned with the height direction of the cabinet 2. That is, the width direction Y of the housing 40 can be aligned with the height direction of the cabinet 2, while the height direction Z of the housing 40 can be aligned with the width direction of the cabinet 2. By placing the circuit breakers 4 in this way within the cabinet 2, more circuit breakers 4 can be accommodated in the width direction of the cabinet 2. Furthermore, since the trigger assembly 12 is located on the side wall 45 of the housing 40 in the axial extension direction Y of the trip rod 11, the external structural component 5 used to link with the trigger assembly 12 needs to be located at the position corresponding to the side wall 45 of the housing 40 in the axial extension direction Y of the trip rod 11, that is, at the position corresponding to the side wall 45 in the width direction Y of the housing 40. The arrangement direction of the multiple circuit breakers 4 placed in the cabinet 2 is consistent with the height direction Z of the housing 40. Therefore, the external structural component 5 can be avoided in the height direction Z of the housing 40, that is, in the width direction of the cabinet 2. In other words, in the width direction of the cabinet 2, the space between the housings 40 of two adjacent circuit breakers 4 does not need to be occupied by the external structural component 5. This can effectively reduce the overall size of the multiple circuit breakers 4 in the width direction of the cabinet 2, so that the size of the cabinet 2 in the width direction can be miniaturized. In addition, when the circuit breaker 4 is plugged in and unplugged from the connector plug 7, the trigger component 12 will be linked with the external structural component 5. The rotation of the trip lever will trigger the operating mechanism to trip and unlock, which can drive the circuit breaker 4 to trip, thereby ensuring the safety of the circuit breaker 4 during the hot plugging and unplugging process.

[0084] Specifically, multiple circuit breakers 4 are installed within the insertion frame 6. After the circuit breakers 4 are installed within the insertion frame 6, the axial extension direction Y of the tripping lever 11 is aligned with the height direction of the insertion frame 6, that is, the width direction Y of the housing 40 is aligned with the height direction of the insertion frame 6. The insertion frame 6 is located in the area of ​​the cabinet 2 where the circuit breakers 4 need to be placed. Multiple external structural components 5 that cooperate with the multiple circuit breakers 4 are located on the top wall 6a or bottom wall 6b of the insertion frame 6 in the height direction of the cabinet 2. The triggering component 12, which is used to link with the external structural components 5, is located on the side wall 45 in the width direction Y of the housing 40. Therefore, when the circuit breaker 4 is inserted into or pulled out of the insertion frame 6, the external structural component 5 will act on the part of the triggering component 12 located outside the side wall 45. The trigger assembly 12 actuates the trip lever 11, causing the trip lever 11 to rotate around its axial extension direction. The rotation of the trip lever 11 triggers the operating mechanism 20 to release the trip lever, which in turn drives the moving contact 21 in the operating mechanism 20 to move, thereby causing the moving contact 21 to contact or separate from the stationary contact 22, so as to close or open the circuit breaker 4, ensuring the safety of the circuit breaker 4 during hot-plugging.

[0085] In some embodiments, the dimension of the insert frame 6 in the height direction of the cabinet 2 is slightly larger than the dimension of the housing 40 in the width direction Y, in order to avoid wasting space in the height direction of the cabinet 2.

[0086] Figure 7 is a simplified schematic diagram of the assembly of the trip lever 11 and part of the operating mechanism 20 in the circuit breaker 4 of the embodiment in Figure 5.

[0087] Referring to Figures 5-7, in some embodiments, the operating mechanism 20 includes a rotating shaft 25, and a moving contact 21 is disposed on the rotating shaft 25. Rotation of the rotating shaft 25 can drive the moving contact 21 to rotate around the central axis of the rotating shaft 25, thereby achieving contact or separation between the moving contact 21 and the stationary contact 22. Specifically, the trip lever 11 rotates around its axial extension direction, driving the transmission assembly 24 to move. The movement of the transmission assembly 24 drives the rotating shaft 25 to rotate. It should be noted that the transmission assembly 24 in the figures is only a schematic diagram, used to illustrate that the trip lever 11 and the rotating shaft 25 interact through the transmission assembly 24. The specific structure of the transmission assembly 24 in this application can be varied, as long as it can drive the rotating shaft 25 to rotate when the trip lever 11 is rotated.

[0088] Referring to Figure 7, in some embodiments, the axial extension direction Y of the trip lever 11 is arranged parallel to the central axis of the rotating shaft 25. In this embodiment, since the axial extension direction Y of the trip lever 11 is parallel to the central axis of the rotating shaft 25, the steering force of the trip lever 11 can be easily transmitted to the rotating shaft 25 through the transmission assembly 24. This simplifies the structure of the transmission assembly 24, reduces the system error of the transmission assembly 24, and improves the transmission accuracy, so that the circuit breaker 4 can accurately open or close during insertion and removal, thereby improving the safety performance of the circuit breaker 4.

[0089] Referring to Figures 5-7, in some embodiments, the operating handle 23 of the operating mechanism 20 can also drive the rotating shaft 25 to rotate. Specifically, the operating handle 23 can drive the transmission component 24 to move, thereby driving the rotating shaft 25 to rotate, so as to realize the contact and separation between the moving contact 21 and the stationary contact 22, thereby realizing the closing or opening of the circuit breaker 4. In this embodiment, the circuit breaker 4 can be closed or opened by manually rotating or pressing the operating handle 23, improving the operability of the circuit breaker 4.

[0090] Referring to Figures 3, 5, and 7, in some embodiments, the operating handle 23 is located on the front wall 42 in the depth direction X of the housing 40, meaning that a portion of the operating handle 23 is exposed on the outside of the front wall 42 for user convenience. Specifically, in this embodiment, the circuit breaker 4 has the trigger assembly 12 located on the side wall 45 in the width direction Y of the housing 40, the operating handle 23 located on the front wall 42 of the housing 40, and the insertion / removal mechanism 30 located on the rear wall of the housing 40. The dimension of the housing 40 in the width direction Y is greater than the dimension of the housing 40 in the height direction Z. Therefore, after multiple circuit breakers 4 are installed in the insertion frame 6, the width direction Y of the housing 40 is the same as the height direction of the insertion frame 6. The dimension of the width direction Y of the housing 40 is larger than the dimension of the height direction Z of the housing 40. Moreover, since the triggering component 12 is located on the side wall 45 of the housing 40 in the width direction Y, and the external structural component 5 is located on the top wall 6a or bottom wall 6b of the insertion frame 6, the spacing between adjacent circuit breakers 4 in the width direction of the insertion frame 6 can be effectively reduced, which is beneficial to the miniaturization design of the insertion frame 6 in the width direction.

[0091] Figure 8 is a partial structural schematic diagram of the circuit breaker 4 in the embodiment of Figure 5; Figure 9 is an exploded schematic diagram of the structure in the embodiment of Figure 8.

[0092] Referring to Figures 5, 8 and 9, in some embodiments, the triggering component 12 includes a cantilever link 121 and a first cantilever 122 and a second cantilever 123 located at both ends of the cantilever link 121 in the axial extension direction Y.

[0093] The cantilever link 121 is rotatably mounted on the side wall 45 in the width direction Y of the housing 40, meaning that the cantilever link 121 can rotate relative to the side wall 45 around its axial extension direction. It should be noted that the extension direction of the central axis of the cantilever link 121 is also the extension direction of its rotation axis. The extension direction of the rotation axis of the cantilever link 121 is consistent with its axial extension direction Y, while the axial extension direction Y is consistent with its length direction. Specifically, the cantilever link 121 can be a cylindrical structure or a rod-like structure of other shapes.

[0094] The axial extension direction Y of the cantilever link 121 is consistent with the axial extension direction Y of the trip lever 11, and the extension directions of the first cantilever 122 and the second cantilever 123 are both perpendicular to the axial extension direction Y of the cantilever link 121. It can be understood that the central axis of the cantilever link 121 and the central axis of the trip lever 11 may or may not coincide.

[0095] The first cantilever 122 is used to link with the trip lever 11 and drive the trip lever 11 to rotate. Specifically, when the cantilever link 121 rotates relative to the side wall 45, it drives the first cantilever 122 to rotate around the axial extension direction of the cantilever link 121, and the first cantilever 122 rotates to drive the trip lever 11 to rotate.

[0096] Referring to Figures 8 and 9, in some embodiments, the trip lever 11 is provided with a first linkage rod 15, the extension direction of the first linkage rod 15 being perpendicular to the axial extension direction Y of the trip lever 11; the first cantilever 122 is provided with a first roller 124, the axial extension direction of the first roller 124 being consistent with the axial extension direction Y of the cantilever link 121. The first roller 124 coincides with the first linkage rod 15 in the radial direction of the first roller 124, that is, the first linkage rod 15 is located on the path of the first roller 124 as the first cantilever 122 rotates around the axial extension direction of the cantilever link 121. In this embodiment, since the first linkage rod 15 is disposed on the trip rod 11, when the first linkage rod 15 rotates around the axial extension direction of the trip rod 11, it will drive the trip rod 11 to rotate around its axial extension direction. The first cantilever 122 is disposed on the cantilever link 121, so the rotation of the cantilever link 121 around its axial extension direction can drive the first cantilever 122 to rotate around the axial extension direction of the cantilever link 121. The first roller 124 is disposed on the first cantilever 122, so the rotation of the first cantilever 122 can drive the first roller 124 to rotate around the axial extension direction of the cantilever link 121. The first linkage rod 15 is located on the path of the first roller 124 as the first cantilever 122 rotates around the axial extension direction of the cantilever link 121. Thus, when the first roller 124 rotates around the axial extension direction of the cantilever link 121, it can drive the first linkage rod 15 to rotate around the axial extension direction of the trip rod 11, thereby driving the trip rod 11 to rotate. The rotation of the trip rod 11 triggers the operating mechanism 20 to release and unlock, thereby driving the moving contact 21 and the stationary contact 22 of the operating mechanism 20 to contact or separate, and causing the circuit breaker 4 to close or open. In this embodiment, since the trip rod 11 and the cantilever link 121 are not directly fixedly connected, but indirectly driven to rotate through the cooperation between the first linkage rod 15 and the first roller 124, it is not necessary to make the central axis of the trip rod 11 coincide with the central axis of the cantilever link 121. In other words, the installation accuracy of the relative position of the trip rod 11 and the cantilever link 121 is not required to be high, which can effectively reduce the processing difficulty of the circuit breaker 4. Moreover, since this embodiment indirectly drives the trip rod 11 to rotate through the cooperation between the first linkage rod 15 and the first roller 124, it can avoid the triggering component 12 from mistakenly triggering the trip rod 11 to rotate during vibration.

[0097] Referring to Figures 3, 5, 8, and 9, in some embodiments, the second cantilever 123 is located outside the side wall 45 and is used to link with the external structural member 5, driving the cantilever link 121 to rotate. Since the second cantilever 123 is located outside the side wall 45, it is convenient to correspond with and link with the external structural member 5 located on the top wall 6a or bottom wall 6b of the insert frame 6.

[0098] It is understandable that the shapes of the first cantilever 122, the second cantilever 123, the first roller 124, and the first linkage rod 15 are not specifically limited. For example, they can be cylindrical structures or other long strip structures, all of which have a length direction. That is, the axial extension direction of the first cantilever 122, the second cantilever 123, the first roller 124, and the first linkage rod 15 is consistent with their length direction.

[0099] Figure 10 is a projection view of the circuit breaker 4 and the external structural component 5 in the width direction Y of the housing 40.

[0100] To facilitate the linkage between the second cantilever 123 and the external structural component 5, referring to Figures 3 and 8-10, in some embodiments, the trigger assembly 12 further includes a second roller 125 disposed on the second cantilever 123. When the second cantilever 123 rotates around the axial extension direction of the cantilever link 121, it drives the second roller 125 to rotate around the axial extension direction of the cantilever link 121. The external structure is located on the path of the second roller 125 rotating around the axial extension direction of the cantilever link 121. During the process of the circuit breaker 4 being inserted and removed from the insertion frame 6, the external structural component 5 acts on the second roller 125, driving the second roller 125 to rotate around the axial extension direction of the cantilever link 121. This rotation is then transmitted through the second cantilever 123 to the cantilever link 121, causing the cantilever link 121 to rotate. This rotation then drives the trip lever 11 to rotate. The rotation of the trip lever 11 triggers the operating mechanism 20 to trip and unlock, thereby realizing the tripping of the circuit breaker 4.

[0101] Referring to Figures 8 and 9, in some embodiments, the axial extension direction of the second roller 125 is consistent with the axial extension direction Y of the cantilever link 121. In the axial extension direction Y of the cantilever link 121, the cantilever link 121 and the second roller 125 are located on opposite sides of the second cantilever 123. This can prevent the distance between the external structural member 5 and the side wall 45 of the housing 40 from being too small, which would affect the normal insertion and removal of the circuit breaker 4. It can also effectively reduce the size of the second cantilever 123 in the width direction Y of the housing 40, thereby reducing costs.

[0102] Specifically, referring to Figures 3 and 8-10, in some embodiments, the external structural component 5 includes a first stop 51, which includes a push-in lifting surface 511, a tripping surface 512, and a pull-out lifting surface 513. In the height direction Z of the housing 40, the distance between the tripping surface 512 and the central axis of the cantilever link 121 is L1, the distance between the pull-out lifting surface 513 and the central axis of the cantilever link 121 is L2, and the distance between the push-in lifting surface 511 and the central axis of the cantilever link 121 is L3, where L1 ≤ L2 and L1 ≤ L3. The distance between the central axis of the second roller 125 and the central axis of the cantilever link 121 is L4, where L4 > L1. In this embodiment, since L4 > L1, during the insertion and removal process of the circuit breaker 4 from the insertion frame 6, it can be ensured that the cantilever contacts and acts with the push-in lifting surface 511, the tripping surface 512, and the pull-out lifting surface 513. Since L1≤L2, when the circuit breaker 4 is inserted into the insertion frame 6, that is, during the insertion and removal of the connector 7 into the insertion and removal structure, when the second roller 125 contacts the push-in lifting surface 511, it can drive the second roller 125 to rotate around the axial extension direction of the cantilever connecting rod 121 and move the second roller 125 to the tripping surface 512. When it is on the tripping surface 512, the rotation of the tripping rod 11 triggers the operating mechanism 20 to trip and unlock. The tripping rod 11 separates the moving contact 21 and the stationary contact 22, so that the circuit breaker 4 is tripped, thereby preventing electrical arcing during the insertion and removal of the connector 7 into the insertion and removal structure, avoiding the generation of electric arcs, and ensuring the safety of the circuit breaker 4 when it is inserted. Since L1≤L3, when the circuit breaker 4 is pulled out of the self-insertion frame 6, that is, during the process of pulling out the self-insertion structure of the connector plug 7, when the second roller 125 contacts the pull-out lifting surface 513, the pull-out lifting surface 513 can drive the second roller 125 to rotate around the axial extension direction of the cantilever connecting rod 121, and move the second roller 125 to the tripping surface 512. When it is on the tripping surface 512, the rotation of the tripping rod 11 triggers the operating mechanism 20 to trip and unlock. The tripping rod 11 separates the moving contact 21 and the stationary contact 22, so that the circuit breaker 4 is tripped, thereby preventing electrical arcing during the process of pulling out the self-insertion structure of the connector plug 7, avoiding the generation of electric arc, and ensuring the safety of the circuit breaker 4 when it is pulled out.

[0103] It is understood that in some embodiments, the push-in lifting surface 511, the release surface 512, and the pull-out lifting surface 513 are planar. In other embodiments, the push-in lifting surface 511, the release surface 512, and the pull-out lifting surface 513 may also be curved surfaces.

[0104] In order to ensure that the second roller 125 can effectively interact with the first stop 51 during the insertion and removal of the circuit breaker 4, in some embodiments, the rotation angle of the second cantilever 123 around the central axis of the cantilever link 121 is limited to a specified range so that the second roller 125 can maintain contact with the second stop 52 when passing the first stop 51 during the insertion and removal process.

[0105] In order to limit the rotation angle of the second cantilever 123 around the central axis of the cantilever link 121 within a specified range, referring to Figures 5-9, in some embodiments, the trigger assembly 12 further includes a fourth cantilever 126 disposed on the cantilever link 121. The extension direction of the fourth cantilever 126 is perpendicular to the axial extension direction Y of the cantilever link 121. In this embodiment, the rotation angle of the cantilever link 121 is limited by limiting the rotation angle of the fourth cantilever 126, thereby limiting the rotation angle of the second cantilever 123.

[0106] Specifically, the trigger assembly 12 also includes a limiting member 1301, which is fixed to the housing 40. The limiting member 1301 is located on the rotation path of the fourth cantilever 126. Because the limiting member 1301 is located on the rotation path of the fourth cantilever 126, after the fourth cantilever 126 rotates a certain angle around the axial extension direction of the cantilever link 121, it will be blocked by the limiting member 1301, thereby limiting the fourth cantilever 126 from continuing to rotate, and thus limiting the second cantilever 123 from continuing to rotate. It can be understood that the limiting members 1301 can be located on both sides of the rotation direction of the fourth cantilever 126, so as to restrict the fourth cantilever 126 to rotate between the limiting members 1301 on both sides of the fourth cantilever 126.

[0107] Furthermore, the trigger assembly 12 also includes a third cantilever 127 disposed on the cantilever link 121, the extension direction of the third cantilever 127 being perpendicular to the axial extension direction Y of the cantilever link 121; a groove 46 is provided inside the housing 40, and the trigger assembly 12 also includes a return spring 128 disposed within the groove 46, with the third cantilever 127 and the return spring 128 coinciding in the depth direction of the groove 46. It is understood that the return spring 128 is in a compressed state, allowing it to apply a spring force to the third cantilever 127. In this embodiment, since the return spring 128 is provided between the third cantilever 127 and the bottom wall of the groove 46, in its natural state, the third cantilever 127 can be driven to rotate by the return spring 128. For example, as shown in the accompanying drawings, the return spring 128 drives the third cantilever 127 to rotate clockwise. Of course, under the limiting effect of the limiting member 1301, the return spring 128 cannot make the third cantilever 127 rotate clockwise continuously. For example, when the fourth cantilever 126 is blocked by the limiting member 1301, the third cantilever 127 can no longer be pushed clockwise by the return spring 128. In addition, due to the setting of the return spring 128, during the insertion and removal of the circuit breaker 4, the second roller 125 can always maintain contact with the push-in lifting surface 511, the tripping surface 512, and the pull-out lifting surface 513 to ensure that during the insertion and removal of the circuit breaker 4, the push-in lifting surface 511, the tripping surface 512, and the pull-out lifting surface 513 can always drive the second roller 125 to drive the second cantilever 123 to rotate in real time, so as to ensure the accuracy of operation. Under the action of the limiting member 1301, after the circuit breaker 4 is completely pulled out from the insertion frame 6, the limiting member 1301 can also limit the fourth cantilever 126 to a specified position, thereby limiting the second cantilever 123 to a specified position, so that the linkage between the second roller 125 and the first stop block 51 can be guaranteed when the insertion frame 6 is inserted again.

[0108] In some embodiments, the first cantilever 122, the second cantilever 123, the third cantilever 127, and the fourth cantilever 126 are integrally formed with the cantilever connecting rod 121 to improve the consistency of the rotation of the first cantilever 122, the second cantilever 123, the third cantilever 127, and the fourth cantilever 126 with the rotation of the cantilever connecting rod 121, thereby improving the transmission accuracy. For example, it improves the accuracy of the rotation of the second cantilever 123 in driving the rotation of the cantilever connecting rod 121, or improves the accuracy of the rotation of the cantilever connecting rod 121 in driving the rotation of the third cantilever 127 and the fourth cantilever 126, or improves the accuracy of the rotation of the cantilever connecting rod 121 in driving the rotation of the first cantilever 122, thereby improving the accuracy of the rotation of the moving contact 21 around the rotating shaft 25, and thus improving the safety performance of the circuit breaker 4 in this embodiment during hot-plugging.

[0109] To prevent relative movement between the cantilever link 121 and the side wall 45 in the axial extension direction Y of the trip lever 11, referring to Figures 6 and 9, in some embodiments, the cantilever link 121 is provided with a retaining ring 1216, and the side wall 45 is provided with a notch 4501. The cantilever link 121 is disposed in the notch 4501, and the inner wall of the notch 4501 is provided with a retaining groove (not shown in the figure) adapted to the retaining ring 1216. The retaining ring 1216 is located in the retaining groove, so that relative movement between the cantilever link 121 and the side wall 45 in the axial extension direction Y of the trip lever 11 is prevented by the restriction of the retaining groove and the retaining ring 1216. Specifically, after the cantilever link 121 is positioned at the notch 4501, the release mechanism 10 also includes a fixing seat 130 for fixing the cantilever link 121 at the notch 4501 of the side wall 45. The limiting member 1301 is provided on the fixing seat 130. It can be understood that the fixing seat 130 is also provided with a slot for limiting the locking ring 1216.

[0110] Figure 11 is a schematic diagram of another structure of the cantilever link 121 provided in an embodiment of this application.

[0111] Referring to Figure 11, the cantilever link 121 includes a first link 121a and a second link 121b arranged along its axial extension direction. The first link 121a is provided with a limiting groove 1211, and the end of the second link 121b facing the first link 121a is provided with a limiting protrusion 1212 that matches the limiting groove 1211. For example, the limiting groove 1211 is a square groove, and the limiting protrusion 1212 is a square structure that matches the square groove. The first link 121a is provided with a threaded hole 1213, and the second link 121b is provided with a fixing hole 1214 that extends through its axial extension direction. A bolt 1215 passes through the fixing hole 1214 and is fixed to the threaded hole 1213, thereby fixing the first link 121a and the second link 121b together. In this embodiment, since the first rod 121a and the second rod 121b are detachably connected, there is no need to provide the fixing seat 130 mentioned above (as shown in Figure 6) and to open the notch 4501 mentioned above in the side wall 45 (as shown in Figure 6). Only a through hole needs to be opened in the side wall 45 to easily install the cantilever connecting rod 121 on the side wall 45.

[0112] In some embodiments, the second rod 121b is rotatably mounted on the side wall 45, and the second cantilever 123 is mounted on the second rod 121b at one end located outside the side wall 45.

[0113] To improve the visibility of the closed or open state of the circuit breaker 4 during hot-plugging, referring to Figures 4, 5, 8, and 9, in some embodiments, the circuit breaker 4 further includes an indicator mechanism 60. The indicator mechanism 60 is used to display the closed or open state of the circuit breaker 4 in real time during the plugging and unplugging process. The front wall 42 of the housing 40 is provided with an observation window 421, through which the state displayed by the indicator mechanism 60 can be observed.

[0114] Referring to Figures 4, 5, 8, and 9, in some embodiments, the indicating mechanism 60 includes an indicating rod 61. The end of the indicating rod 61 is provided with a first indicating surface 611 and a second indicating surface 612. The indicating rod 61 is linked with the tripping rod 11 or the cantilever linkage 121 to make the indicating rod 61 rotate. When the tripping rod 11 drives the moving contact 21 and the stationary contact 22 to separate, the indicating rod 61 rotates until the first indicating surface 611 is directly opposite the observation window 421, indicating the open state. When the tripping rod 11 drives the moving contact 21 and the stationary contact 22 to contact, the indicating rod 61 rotates until the second indicating surface 612 is directly opposite the observation window 421, indicating the closed state.

[0115] To improve the accuracy of the indication mechanism 60, referring to Figures 4, 5, 8, and 9, in some embodiments, the indication mechanism 60 further includes a fixed base 62, a rotating shaft 63 fixed on the fixed base 62, and a torsion spring 64 sleeved on the rotating shaft 63. The fixed base 62 is fixed to the housing 40, and the indicator rod 61 is sleeved on the rotating shaft 63, so that the indicator rod 61 can rotate around the central axis of the rotating shaft 63. One end of the torsion spring 64 is connected to the fixed base 62, and the other end of the torsion spring 64 is connected to the indicator rod 61. The torsion spring 64 can apply torque to the indicator rod 61 to drive the indicator rod 61 to rotate around the rotating shaft 63 until the second indicating surface 612 is directly opposite the observation window 421. That is, when the circuit breaker 4 is fully plugged into or completely disconnected from the connector 7, the torsion spring 64 can drive the indicator rod 61 to rotate until the second indicating surface 612 is directly opposite the observation window 421.

[0116] To enable the indicator rod 61 to rotate from being directly opposite the second indicator surface 612 and the observation window 421 to being directly opposite the first indicator surface 611 and the observation window 421 during the insertion and removal of the circuit breaker 4, referring to Figures 4, 5, 8, and 9, in some embodiments, a third roller 129 is provided on the fourth cantilever 126. The axial extension direction of the third roller 129 is consistent with the axial extension direction Y of the cantilever connecting rod 121, and the axial direction of the rotating shaft 63 is consistent with the axial direction of the cantilever connecting rod 121. The radial direction of the third roller 129 coincides with one end of the indicator rod 61, that is, one end of the indicator rod 61 is located at the third roller 129. The torsion spring 64 rotates along the axial extension direction of the cantilever link 121. When the third roller 129 rotates around the axial extension direction of the cantilever link 121, it drives the indicator rod 61 to rotate around the pivot 63. This drives the indicator rod 61 to rotate from facing the second indicator surface 612 and the observation window 421 to facing the first indicator surface 611 and the observation window 421. When the third roller 129 does not apply force to the indicator rod 61, such as when the circuit breaker 4 is fully connected to or completely disconnected from the connector 7, the torsion spring 64 can drive the indicator rod 61 to rotate back to facing the second indicator surface 612 and the observation window 421. In this embodiment, since the indicator rod 61 and the cantilever link 121 are not directly fixed, but indirectly linked through the third roller 129 and one end of the indicator rod 61, it effectively avoids the indicator rod 61 driving the cantilever link 121 to rotate in the opposite direction during vibration, reducing the risk of the trigger assembly 12 falsely triggering the trip lever 11.

[0117] Furthermore, in this embodiment, the rotation of the cantilever linkage 121 can simultaneously drive the trip lever 11 to rotate and the indicator lever 61 to rotate, thereby improving the consistency of the actions of the trip lever 11 and the indicator lever 61, and thus improving the accuracy of the indicator mechanism 60 in indicating whether the circuit is closed or open.

[0118] Referring to Figures 5 and 9, in some embodiments, since the axial extension direction of the pivot 63 is consistent with the axial extension direction Y of the cantilever link 121, and the end of the indicator rod 61 with the first indicator surface 611 and the second indicator surface 612 faces the front wall 42, the arrangement direction of the first indicator surface 611 and the second indicator surface 612 is consistent with the height direction Z of the housing 40.

[0119] To prevent the indicator rod 61 from rotating excessively, referring to Figures 5 and 9, in some embodiments, the fixing base 62 is provided with a limiting hole 621 through which the indicator rod 61 passes. The size of the limiting hole 621 is larger than the size of the part of the indicator rod 61 located inside the limiting hole 621. The limiting hole 621 can limit the rotation of the indicator rod 61 to prevent the torsion spring 64 or the third roller 129 from not being able to act effectively on the indicator rod 61.

[0120] Figure 5 is a schematic diagram of the second roller 125 in the circuit breaker 4 in this embodiment when it contacts the pull-out lifting surface 513; Figure 12 is a schematic diagram of the second roller 125 in the circuit breaker 4 in this embodiment when it contacts the tripping surface 512; Figure 13 is a schematic diagram of the second roller 125 in the circuit breaker 4 in this embodiment when it contacts the push-in lifting surface 511.

[0121] The following describes the working process of the tripping mechanism 10 of the circuit breaker 4 during the insertion and removal process, with reference to Figures 5-13.

[0122] During the process of connecting the plug-in structure of the circuit breaker 4 to the connector 7 (as shown in Figure 4), the second roller 125, under the action of the return spring 128, presses against the push-in lifting surface 511 and gradually moves with the push-in lifting surface 511 onto the tripping surface 512. During this process, the push-in lifting surface 511 drives the second roller 125 to rotate counterclockwise around the central axis of the cantilever link 121. The rotation of the cantilever link 121 drives the first cantilever 122 and the fourth cantilever 126 to rotate respectively, which in turn drives the tripping rod 11 to rotate around its axial extension direction and the indicator rod 61 to rotate around the rotating shaft 63. This causes the tripping rod 11 to separate the moving contact 21 and the stationary contact 22, and the indicator rod 61 rotates until the first indicator surface 611 is directly opposite the observation window 421. At this time, the circuit breaker 4 is tripped, and the indicator mechanism 60 indicates that it is in the tripped state. As circuit breaker 4 continues to be inserted, the second roller 125 moves from the tripping surface 512 to the pull-out lifting surface 513. At this time, under the action of the return spring 128, the third cantilever 127 drives the cantilever connecting rod 121 to rotate counterclockwise. After the cantilever connecting rod 121 rotates, it no longer applies force to the tripping rod 11. The moving contact 21 and the stationary contact 22 re-engage under the action of the automatic reset device in the operating mechanism 20, causing circuit breaker 4 to close. At the same time, under the action of the torsion spring 64, the indicator rod 61 rotates until the second indicator surface 612 is directly opposite the observation window 421 to indicate the closed state of circuit breaker 4.

[0123] During the process of pulling out the plug-in structure and connector 7 of the circuit breaker 4, the second roller 125 presses against the pull-out lifting surface 513 and gradually moves to the tripping surface 512 along with the pull-out lifting surface 513. During this process, the pull-out lifting surface 513 drives the second roller 125 to rotate clockwise around the central axis of the cantilever link 121. The rotation of the cantilever link 121 drives the first cantilever 122 and the fourth cantilever 126 to rotate respectively, which in turn drives the tripping rod 11 to rotate around its axial extension direction and the indicator rod 61 to rotate around the rotating shaft 63. This causes the tripping rod 11 to separate the moving contact 21 and the stationary contact 22, and the indicator rod 61 rotates until the first indicator surface 611 is directly opposite the observation window 421. At this time, the circuit breaker 4 is tripped, and the indicator mechanism 60 indicates that it is in the tripped state. As circuit breaker 4 continues to be pulled out, the second roller 125 moves from the tripping surface 512 to the push-in lifting surface 511. At this time, under the action of the return spring 128, the third cantilever 127 drives the cantilever connecting rod 121 to rotate counterclockwise. After the cantilever connecting rod 121 rotates, it no longer applies force to the tripping rod 11. The moving contact 21 and the stationary contact 22 re-engage under the action of the automatic reset device in the operating mechanism 20, causing circuit breaker 4 to close. At the same time, under the action of the torsion spring 64, the indicator rod 61 rotates until the second indicator surface 612 is directly opposite the observation window 421 to indicate the closed state of circuit breaker 4.

[0124] After further unplugging circuit breaker 4, circuit breaker 4 will be completely separated from connector 7.

[0125] Figure 14 is a schematic diagram of another circuit breaker 4 provided in an embodiment of this application; Figure 15 is a partial schematic diagram of the circuit breaker 4 in the embodiment of Figure 14; Figure 16 is an exploded schematic diagram of the structure in the embodiment of Figure 15. The main difference between the circuit breaker 4 in the embodiment of Figure 14 and the circuit breaker 4 in the embodiment of Figure 5 lies in the different triggering components 12. To avoid redundant description, this embodiment only introduces the distinguishing features from the circuit breaker 4 in the embodiments of Figures 5-13. The same features in this embodiment as in the embodiments of Figures 5-13 can be referred to Figures 5-13, and will not be repeated here.

[0126] Referring to Figures 14-16, in some embodiments, the trigger assembly 12 includes a second cantilever 123 and a cantilever link 121. The cantilever link 121 is rotatably mounted on the side wall 45. The cantilever link 121 and the trip lever 11 are coaxially arranged. One end of the cantilever link 121 extends into the housing 40 and is fixed to one end of the trip lever 11. The other end of the cantilever link 121 extends out of the side wall 45 and is fixed to the second cantilever 123. The extension direction of the second cantilever 123 is perpendicular to the axial extension direction Y of the cantilever link 121. The second cantilever 123 is used to link with the external structural member 5, driving the cantilever link 121 to rotate. The second cantilever 123 and the external structural member 5 are the same as those in the embodiments of Figures 5-13, and the principle of the second cantilever 123 linking with the first stop 51 included in the external structural member 5 through the second roller 125 is the same. All of these can be referred to in the embodiments of Figures 5-13, and will not be repeated here.

[0127] In this embodiment, since the cantilever link 121 and the trip lever 11 are coaxially arranged and directly fixed together, they can be directly driven, which can improve the transmission accuracy of the cantilever link 121 and the trip lever 11, thereby improving the safety performance of the circuit breaker 4 during hot-swapping. Moreover, the triggering component 12 in this embodiment has a simple structure, high stability, and low material cost.

[0128] In some embodiments, the cantilever link 121 is provided with a fixing hole 1210, and the release rod 11 passes through the fixing hole 1210 to achieve fixation between the cantilever link 121 and the release rod 11.

[0129] It is understood that the trigger component 12 in this embodiment may not be equipped with a reset spring 128 similar to that in the embodiment of FIG9. Instead, it may directly use the reset device in the operating mechanism 20 or the torsion spring on the trip lever to achieve reset and drive the trip lever 11 to reset.

[0130] Figure 14 is a schematic diagram of the second roller 125 in the circuit breaker 4 in this embodiment when it contacts the pull-out lifting surface 513; Figure 17 is a schematic diagram of the second roller 125 in the circuit breaker 4 in this embodiment when it contacts the tripping surface 512; Figure 18 is a schematic diagram of the second roller 125 in the circuit breaker 4 in this embodiment when it contacts the push-in lifting surface 511.

[0131] The following describes the working process of the tripping mechanism 10 of the circuit breaker 4 during the insertion and removal process, with reference to Figures 14-18.

[0132] During the insertion and removal process of the circuit breaker 4 and the connecting plug 7 (as shown in Figure 4), the second roller 125, under the action of the pushing-in lifting surface 511, gradually moves onto the tripping surface 512. During this process, the pushing-in lifting surface 511 drives the second roller 125 to rotate counterclockwise around the central axis of the cantilever link 121. The rotation of the cantilever link 121 causes the tripping lever 11 to rotate counterclockwise, which in turn causes the tripping lever 11 to rotate around its axial extension direction and the indicator rod 61 to rotate around the rotating shaft 63. This causes the tripping lever 11 to separate the moving contact 21 (as shown in Figure 7) and the stationary contact 22 (as shown in Figure 7). As the circuit breaker 4 continues to be inserted, the moving contact 21 and the stationary contact 22 re-engage under the action of the automatic reset device within the operating mechanism 20, causing the tripping lever 11 to rotate clockwise to reset. The cantilever link 121 then drives the second roller 125 to move from the tripping surface 512 to the pull-out lifting surface 513.

[0133] During the process of unplugging the circuit breaker 4 from the connector 7, the second roller 125, under the action of the pull-out lifting surface 513, gradually moves to the tripping surface 512. During this process, the pull-out lifting surface 513 drives the second roller 125 to rotate clockwise around the central axis of the cantilever link 121. The rotation of the cantilever link 121 causes the tripping lever 11 to rotate counterclockwise, which in turn causes the tripping lever 11 to rotate around its axial extension direction and the indicator rod 61 to rotate around the rotating shaft 63. This causes the tripping lever 11 to separate the moving contact 21 and the stationary contact 22. As the circuit breaker 4 continues to be unplugged, the moving contact 21 and the stationary contact 22 re-engage under the action of the automatic reset device within the operating mechanism 20, causing the tripping lever 11 to rotate clockwise to reset. The cantilever link 121 then drives the second roller 125 to move from the tripping surface 512 to the push-in lifting surface 511.

[0134] After further unplugging circuit breaker 4, circuit breaker 4 will be completely separated from connector 7.

[0135] Figure 19 is a structural schematic diagram of another circuit breaker 4 provided in an embodiment of this application; Figure 20 is a partial structural schematic diagram of the circuit breaker 4 in the embodiment of Figure 19; Figure 21 is an exploded schematic diagram of the structure in the embodiment of Figure 20. The main difference between the circuit breaker 4 in the embodiment of Figure 19 and the circuit breaker 4 in the embodiment of Figure 5 lies in the different triggering components 12. To avoid redundant description, this embodiment only introduces the distinguishing features from the circuit breaker 4 in the embodiments of Figures 5-13. The same features in this embodiment as in the embodiments of Figures 5-13 can be referred to Figures 5-13, and will not be repeated here.

[0136] Referring to Figures 19-21, in some embodiments, the trigger assembly 12 includes a button 131, which is disposed on the side wall 45 and is movable relative to the side wall 45 in the axial extension direction Y of the trip rod 11. In this embodiment, by moving the button 131 along the axial extension direction Y of the trip rod 11, the trip rod 11 is rotated. The rotation of the trip rod 11 triggers the operating mechanism 20 to release and unlock, thereby causing the moving contact 21 (as shown in Figure 7) and the stationary contact 22 (as shown in Figure 7) to contact or separate, so as to realize the closing or opening of the circuit breaker 4.

[0137] Referring to Figures 19-21, in some embodiments, the button 131 includes a first pushing surface 1311 located within the housing 40, and the tripping mechanism 10 further includes a first linkage rod 15 disposed on the tripping rod 11. The extension direction of the first linkage rod 15 is perpendicular to the axial extension direction Y of the tripping rod 11, and the first pushing surface 1311 and the first linkage rod 15 are directly opposite each other in the axial extension direction Y of the tripping rod 11. In this embodiment, when the button 131 moves toward the tripping rod 11, the first pushing surface 1311 presses against the first linkage rod 15. Under the action of the first pushing surface 1311, the first linkage rod 15 rotates around the axial extension direction of the tripping rod 11. Since the first linkage rod 15 is disposed on the tripping rod 11, the first linkage rod 15 can also drive the tripping rod 11 to rotate. The rotation of the tripping rod 11 triggers the operating mechanism 20 to trip and unlock, thereby causing the moving contact 21 and the stationary contact 22 to contact or separate, so as to realize the closing or opening of the circuit breaker 4.

[0138] Specifically, in some embodiments, the first pushing surface 1311 is a plane, and a plane perpendicular to the axial extension direction Y of the release lever 11 is set as a reference plane, then the first pushing surface 1311 is set at an angle to the reference plane. Of course, in other embodiments, the first pushing surface 1311 can also be a curved surface.

[0139] To facilitate linkage with the external structural component 5, referring to Figures 19-21, in some embodiments, the button 131 further includes a second pushing surface 1312 located outside the housing 40. The first pushing surface 1311 and the second pushing surface 1312 are located at opposite ends of the button 131 in the axial extension direction Y of the trip lever 11. The second pushing surface 1312 is used to link with the external structural component 5, driving the button 131 to move along the axial extension direction Y of the trip lever 11.

[0140] In this embodiment, since the trip lever 11 and the button 131 are not directly fixedly connected, but are indirectly driven to rotate through the cooperation between the first linkage rod 15 and the first push surface 1311, the cooperation between the first linkage rod 15 and the first roller 124 can prevent the triggering component 12 from accidentally triggering the rotation of the trip lever 11 during vibration.

[0141] Figure 22 is a schematic projection of part of the structure of the circuit breaker 4 in the embodiment of Figure 14 in the width direction Y of the housing 40.

[0142] Referring to Figures 19-22, in some embodiments, the external structural member 5 includes a second stop 52 for linkage with the second push surface 1312. The second stop 52 includes a push-in lifting surface 521, a tripping surface 522, and a pull-out lifting surface 523. In the axial extension direction Y of the tripping lever 11, the distance between the tripping surface 522 and the side wall 45 is L5, the distance between the push-in lifting surface 521 and the side wall 45 is L6, and the distance between the pull-out lifting surface 523 and the side wall 45 is L7, wherein L5≤L6 and L5≤L7; the distance between the end of the tripping lever 11 facing the trigger assembly 12 and the tripping surface 522 is L8, and the length of the button 131 in the axial extension direction Y of the tripping lever 11 is L9, wherein L8<L9.

[0143] In this embodiment, since L8 < L9, when button 131 is pushed into lifting surface 521 or pulled out of lifting surface 523 and pressed towards trip lever 11, when button 131 moves to trip surface 522, the first pushing surface 1311 of button 131 will inevitably drive the first linkage rod 15 to rotate at a certain angle, so as to realize the rotation of trip lever 11. Moreover, since L5 ≤ L6, when circuit breaker 4 is pushed into insert frame 6 (as shown in Figure 3), the second pushing surface 1312 gradually moves to trip surface 522 under the action of pushing into lifting surface 521. During this process, pushing into lifting surface 521 can push button 131 towards trip lever 11, thereby driving the first linkage rod 15 to rotate. Similarly, since L5≤L7, when the circuit breaker 4 is pulled out of the insertion frame 6, the second pushing surface 1312 gradually moves to the tripping surface 522 under the action of the pull-out lifting surface 523. During this process, the pull-out lifting surface 523 can push the button 131 towards the tripping lever 11, thereby driving the first linkage lever 15 to rotate. When the button 131 moves to the position of the tripping surface 522, the rotation of the tripping lever 11 triggers the operating mechanism 20 to trip and unlock, and the moving contact 21 (as shown in Figure 7) and the stationary contact 22 (as shown in Figure 7) separate. At this time, the circuit breaker 4 is in the open state, thereby preventing electrical arcing during the insertion and removal of the connecting plug 7 and the insertion and removal structure, avoiding the generation of electric arcs, and ensuring the safety of the circuit breaker 4 when it is pulled out.

[0144] It is understood that in some embodiments, the push-in lifting surface 521, the release surface 522, and the pull-out lifting surface 523 are planar. In other embodiments, the push-in lifting surface 521, the release surface 522, and the pull-out lifting surface 523 may also be curved surfaces.

[0145] Referring to Figures 19-21, in some embodiments, the trigger assembly 12 further includes an outer frame 132, which is fixed to the housing 40. The outer frame 132 includes a guide groove 1321 whose depth direction is consistent with the axial extension direction Y of the trip lever 11. A guide hole 1322 is provided on the bottom wall of the guide groove 1321. The button 131 is inserted into the guide groove 1321 and passes through the guide hole 1322. The button 131 is movable relative to the outer frame 132 in the depth direction of the guide groove 1321. In this embodiment, by setting the guide groove 1321 and the guide hole 1322, the button 131 can move accurately along a preset path, thereby improving the accuracy of the engagement between the button 131 and the trip lever 11 and improving the safety performance of the circuit breaker 4 during hot-swapping.

[0146] To prevent button 131 from disengaging from outer frame 132 in the axial direction of release lever 11, referring to Figures 19-21, in some embodiments, button 131 further includes an undercut structure 1313 and a limiting step surface 1314. In the axial extension direction Y of release lever 11, the undercut structure 1313 and the limiting step surface 1314 are located on opposite sides of the bottom wall of guide groove 1321. The dimensions of both the undercut structure 1313 and the limiting step surface 1314 are larger than the dimensions of guide hole 1322. The dimension of the portion of button 131 located between the undercut structure 1313 and the limiting step surface 1314 is smaller than the dimension of guide groove 1321. In this embodiment, by setting the inverted structure 1313 and the limiting step surface 1314, the dimensions of both the inverted structure 1313 and the limiting step surface 1314 are larger than the dimensions of the guide hole 1322. This prevents the button 131 from detaching from the outer frame 132, thereby limiting the displacement distance of the button 131 in the axial extension direction Y of the release rod 11. In addition, the design of the inverted structure 1313 facilitates the button 131 passing through the guide hole 1322, and also facilitates the removal of the button 131 from the guide hole 1322 during maintenance, so as to remove the button 131 from the outer frame 132.

[0147] To facilitate timely reset of button 131 after insertion and removal of circuit breaker 4, referring to Figures 19-21, in some embodiments, button 131 has a hollowed-out area 1315 in the middle part. In the axial extension direction Y of tripping rod 11, the hollowed-out area 1315 is located between the first pushing surface 1311 and the second pushing surface 1312. Button 131 also includes a limiting shaft 1316 located in the hollowed-out area 1315. The axial extension direction of the limiting shaft 1316 is consistent with the axial extension direction Y of tripping rod 11. Trigger assembly 12 also includes a reset spring 133, which is sleeved on the limiting shaft 1316 and located in the hollowed-out area 1315. The reset spring 133 is located between button 131 and the bottom wall of guide groove 1321. In this embodiment, when the second pushing surface 1312 of the button 131 is not subjected to the force applied by the second stop 52, the button 131 is driven to return to a state partially facing the side wall 45 by the return spring 133 applying elastic force to the button 131, so that it can be linked with the push-in lifting surface 521, the tripping surface 522 and the pull-out lifting surface 523 on the second stop 52 when the circuit breaker 4 is subsequently inserted or removed.

[0148] In some embodiments, the outer frame 132 is also provided with a spring relief groove 1323 to accommodate the return spring 133.

[0149] To improve the visibility of the closed or open state of the circuit breaker 4 during hot-swapping, referring to Figures 19-21, in some embodiments, the circuit breaker 4 further includes an indicating mechanism 60.

[0150] The indicating mechanism 60 includes an indicating rod 61, one end of which is mounted on the button 131. The indicating rod 61 faces the front wall 42 of the housing 40 in the depth direction X. The end of the indicating rod 61 facing the front wall 42 has a first indicating surface 611 and a second indicating surface 612. The first indicating surface 611 and the second indicating surface 612 are arranged along the axial extension direction Y of the tripping rod 11. An observation window 421 is provided on the front wall 42 at a position corresponding to the indicating rod 61, for observing the first indicating surface 611 and the second indicating surface 612. In this embodiment, since the indicating rod 61 is mounted on the button 131, when the button 131 moves along the axial direction of the tripping rod 11, it causes the indicating rod 61 to also move along the axial direction of the tripping rod 11. Since the first indicating surface 611 and the second indicating surface 612 are arranged along the axial extension direction Y of the tripping rod 11, when the button 131 moves to different positions, the first indicating surface 611 and the second indicating surface 612 can also change to different positions. Specifically, when the second pushing surface 1312 of button 131 moves to the tripping surface 522, the tripping lever 11 rotates to separate the moving contact 21 from the stationary contact 22. At this time, the first indicating surface 611 is directly opposite the observation window 421, indicating that the circuit breaker 4 is in the open state. When the second pushing surface 1312 of button 131 moves to the push-in lifting surface 521 or pull-out lifting surface 523, the tripping lever 11 rotates to contact the moving contact 21 (as shown in Figure 7) with the stationary contact 22 (as shown in Figure 7). At this time, the second indicating surface 612 is directly opposite the observation window 421, indicating that the circuit breaker 4 is in the closed state.

[0151] Referring to Figures 19-21, in some embodiments, the outer frame 132 is provided with a clearance groove, through which the indicator rod 61 extends to the observation window 421. The groove not only prevents the outer frame 132 from affecting the movement of the indicator rod 61, but also guides the movement of the indicator rod 61.

[0152] Figure 19 is a schematic diagram of the second pushing surface 1312 in the circuit breaker 4 of this embodiment when it contacts the pull-out lifting surface 523; Figure 23 is a schematic diagram of the second pushing surface 1312 in the circuit breaker 4 of this embodiment when it contacts the tripping surface 522; Figure 24 is a schematic diagram of the second pushing surface 1312 in the circuit breaker 4 of this embodiment when it contacts the pushing-in lifting surface 521.

[0153] The following describes the working process of the tripping mechanism 10 of the circuit breaker 4 during the insertion and removal process, with reference to Figures 19-24.

[0154] During the process of connecting the plug-in structure of circuit breaker 4 to the connector plug 7 (as shown in Figure 4), under the action of the reset spring 133, the second pushing surface 1312 presses against the pushing lifting surface 521 and gradually moves with the pushing lifting surface 521 onto the tripping surface 522. During this process, the pushing lifting surface 521 drives the button 131 to move towards the tripping rod 11 along the axial extension direction Y, so that the first pushing surface 1311 presses against the first linkage rod 15 and drives the first linkage rod 15 to rotate around the axial extension direction of the tripping rod 11, thereby driving the tripping rod 11 to rotate around its axial extension direction, and driving the moving contact 21 (as shown in Figure 7) and the stationary contact 22 (as shown in Figure 7) to separate. At the same time, the button 131 moves and drives the indicator rod 61 to move along the axial extension direction Y of the tripping rod 11, and moves until the first indicator surface 611 is directly opposite the observation window 421. At this time, the circuit breaker 4 is tripped, and the indicator mechanism 60 indicates that it is in the tripped state. As the circuit breaker 4 continues to be inserted, the moving contact 21 and the stationary contact 22 re-engage under the action of the automatic reset device within the operating mechanism 20. Simultaneously, under the action of the reset spring 133, the button 131 moves away from the trip lever 11 along the axial extension direction Y, causing the second pushing surface 1312 to move from the trip surface 522 to the pull-out lifting surface 523. Furthermore, the indicator rod 61 moves away from the trip lever 11 along with the button 131, and moves until the second indicating surface 612 is directly opposite the observation window 421. At this point, the circuit breaker 4 is closed, and the indicating mechanism 60 indicates the closed state.

[0155] During the process of pulling out the plug-in structure of circuit breaker 4 from the connector 7, under the action of the return spring 133, the second pushing surface 1312 presses against the pull-out lifting surface 523 and gradually moves to the tripping surface 522 along with the pull-out lifting surface 523. During this process, the pull-out lifting surface 523 drives the button 131 to move towards the tripping rod 11 along the axial extension direction Y, so that the first pushing surface 1311 presses against the first linkage rod 15 and drives the first linkage rod 15 to rotate around the axial extension direction of the tripping rod 11, thereby driving the tripping rod 11 to rotate around its axial extension direction, and driving the moving contact 21 and the stationary contact 22 to separate. At the same time, the movement of the button 131 drives the indicator rod 61 to move along the axial extension direction Y of the tripping rod 11, and moves it until the first indicator surface 611 is directly opposite the observation window 421. At this time, the circuit breaker 4 is tripped, and the indicator mechanism 60 indicates that it is in the tripped state. As the circuit breaker 4 continues to be pulled out, the moving contact 21 and the stationary contact 22 re-engage under the action of the automatic reset device within the operating mechanism 20. Simultaneously, under the action of the reset spring 133, the button 131 moves away from the trip lever 11 along the axial extension direction Y, causing the second pushing surface 1312 to move from the trip surface 522 to the pushing lifting surface 521. Furthermore, the indicator rod 61 moves away from the trip lever 11 along with the button 131, and moves until the second indicating surface 612 is directly opposite the observation window 421. At this point, the circuit breaker 4 is closed, and the indicating mechanism 60 indicates the closed state.

[0156] Figure 25 is a schematic diagram of another circuit breaker 4 provided in the embodiment of this application. The circuit breaker 4 in the embodiment of Figure 25 includes not only the tripping mechanism 10 in the embodiments of Figures 5-14, but also the tripping mechanism 10 in the embodiments of Figures 19-24.

[0157] Referring to Figure 25, in some embodiments, based on the circuit breaker 4 in the embodiment of Figure 5, the circuit breaker 4 further includes another tripping mechanism 10. This other tripping mechanism 10 is located at the other end of the axial extension direction Y of the tripping rod 11. That is, the circuit breaker 4 in this embodiment includes two tripping mechanisms 10: one is the tripping mechanism 10 in the embodiment of Figure 5, and the other is the tripping mechanism 10 in the embodiment of Figure 19. For convenience, the tripping mechanism 10 with the same structure as the tripping mechanism 10 in the embodiment of Figure 5 is designated as the first tripping mechanism, and the tripping mechanism 10 with the same structure as the tripping mechanism 10 in the embodiment of Figure 19 is designated as the second tripping mechanism. The first and second tripping mechanisms are located on opposite sides of the operating mechanism 20 in the extension direction of the tripping rod 11.

[0158] The trigger component 12 of the first tripping mechanism is located on the second side wall 452, and the trigger component 12 of the second tripping mechanism is located on the first side wall 451. Since the circuit breaker 4 in this embodiment is provided with two tripping mechanisms 10, redundancy safety is achieved, and the safety of hot-swapping of the circuit breaker 4 can be guaranteed if one of the tripping mechanisms 10 fails.

[0159] To avoid redundancy, the first tripping mechanism can be referred to as the tripping mechanism 10 in the embodiments of Figures 5-13, and will not be repeated here. The second tripping mechanism can be referred to as the tripping mechanism 10 in the embodiments of Figures 19-24, and will not be repeated here.

[0160] Figure 26 is a schematic diagram of another circuit breaker 4 provided in the embodiments of this application. The circuit breaker 4 in the embodiment of Figure 26 includes not only the tripping mechanism 10 in the embodiments of Figures 14-18, but also the tripping mechanism 10 in the embodiments of Figures 19-24.

[0161] Referring to Figure 25, in some embodiments, based on the circuit breaker 4 in the embodiment of Figure 14, the circuit breaker 4 further includes another tripping mechanism 10. This other tripping mechanism 10 is located at the other end of the axial extension direction Y of the tripping rod 11. That is, the circuit breaker 4 in this embodiment includes two tripping mechanisms 10: one is the tripping mechanism 10 in the embodiment of Figure 14, and the other is the tripping mechanism 10 in the embodiment of Figure 19. For convenience, the tripping mechanism 10 with the same structure as the tripping mechanism 10 in the embodiment of Figure 14 is designated as the first tripping mechanism, and the tripping mechanism 10 with the same structure as the tripping mechanism 10 in the embodiment of Figure 19 is designated as the second tripping mechanism. The first and second tripping mechanisms are located on opposite sides of the operating mechanism 20 in the extension direction of the tripping rod 11.

[0162] The trigger component 12 of the first tripping mechanism is located on the second side wall 452, and the trigger component 12 of the second tripping mechanism is located on the first side wall 451.

[0163] To avoid redundant description, the first tripping mechanism can be referred to as the tripping mechanism 10 in the embodiments of Figures 14-18, and will not be repeated here. The second tripping mechanism can be referred to as the tripping mechanism 10 in the embodiments of Figures 19-24, and will not be repeated here.

[0164] It is understood that, in addition to the above-mentioned solutions, this application may also include circuit breakers 4 with other structures, such as removing the indicating mechanism 60 linked to the cantilever linkage 121 and adding an indicating mechanism 70 based on the circuit breaker 4 in the embodiment of FIG14. As shown in FIG27, in some embodiments, the circuit breaker 4 further includes an indicating mechanism 70, and the indicating mechanism 70 and the tripping mechanism 10 are located on both sides of the operating mechanism 20 in the axial direction of the tripping rod 11.

[0165] The trip lever 11 passes through the operating mechanism 20 and extends both ends of the operating mechanism 20 on both sides of the trip lever 11 in the axial direction. The indicator mechanism 70 includes an outer frame 132, a button 131 and an indicator lever 61. The indicator mechanism 70 and the trigger assembly 12 are located on both sides of the axial extension direction Y of the trip lever 11, that is, the trip lever 11 is located between the trigger assembly 12 and the indicator mechanism 70.

[0166] The outer frame 132 is fixed to the housing 40. The outer frame 132 includes a guide groove 1321 whose depth direction is consistent with the axial extension direction Y of the trip lever 11. A guide hole 1322 is formed on the bottom wall of the guide groove 1321. The button 131 is inserted into the guide groove 1321 and passes through the guide hole 1322. The button 131 is movable relative to the outer frame 132 in the depth direction of the guide groove 1321. The rotation of the trip lever 11 causes the button 131 to move relative to the outer frame 132 along the axial extension direction Y of the trip lever 11. Indicator The structure 70 also includes an indicator rod 61 on the button 131. The indicator rod 61 faces the front wall 42 in the depth direction X of the housing 40. One end of the indicator rod 61 facing the front wall 42 is provided with a first indicator surface 611 and a second indicator surface 612. The first indicator surface 611 and the second indicator surface 612 are arranged along the axial extension direction Y of the tripping rod 11. An observation window 421 is provided on the front wall 42 at a position corresponding to the indicator rod 61. The observation window 421 is used to observe the first indicator surface 611 or the second indicator surface 612. In this embodiment, after the trigger component 12 is linked with the external structural component 5, it drives the trip lever 11 to rotate. The rotation of the trip lever 11 triggers the operating mechanism 20 to trip and unlock. The rotation of the trip lever 11 drives the circuit breaker 4 to close or open. At the same time, the trip lever 11 drives the button 131 to move along the axial direction of the trip lever 11. The movement of the button 131 drives the indicator rod 61 to move, so that the first indicator surface 611 or the second indicator surface 612 moves to the observation window 421 to indicate the open or closed state.

[0167] In some embodiments, the portion of button 131 passing through guide hole 1322 is provided with a first pushing surface 1311, and the tripping mechanism 10 further includes a second linkage rod 16 provided on the other end of tripping rod 11. The extension direction of the second linkage rod 16 is perpendicular to the axial extension direction Y of tripping rod 11, and the first pushing surface 1311 and the second linkage rod 16 are directly opposite each other in the axial extension direction Y of tripping rod 11.

[0168] It should be noted that the outer frame 132, button 131 and indicator rod 61 in this embodiment can be referred to as the outer frame 132, button 131 and indicator rod 61 in the embodiment of Figure 14, and their details will not be repeated here.

[0169] It should be noted that the external structural component 5 shown in Figures 5, 6, and 8-27 is used to cooperate with the circuit breaker 4 and is not part of the circuit breaker 4.

[0170] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A pluggable circuit breaker used in a power supply cabinet, characterized in that, The circuit breaker includes a housing and a tripping mechanism and an operating mechanism connected to the housing; The tripping mechanism includes a tripping rod and a trigger assembly. At least a portion of the trigger assembly is located on the outside of the housing. The trigger assembly is used to drive the tripping rod to rotate around the axial direction. The rotation of the tripping rod is used to drive the moving contact and stationary contact of the operating mechanism to contact or separate. Along the axial extension direction of the tripping rod, the operating mechanism and the trigger assembly are distributed at opposite ends of the tripping rod.

2. The plug-in circuit breaker according to claim 1, characterized in that, The operating mechanism includes a rotating shaft, the moving contact is disposed on the rotating shaft, the rotation of the tripping lever is used to drive the rotating shaft to rotate, and the rotation of the rotating shaft is used to drive the moving contact to contact or separate from the stationary contact; the axial extension direction of the tripping lever is arranged parallel to the axial extension direction of the rotating shaft.

3. The pluggable circuit breaker according to claim 2, characterized in that, The axial extension direction of the tripping lever is consistent with the width direction of the housing, and the width dimension of the housing is greater than the height dimension of the housing; the operating mechanism includes an operating handle, which is located on the front wall of the housing in the depth direction, and the operating handle is used to drive the rotating shaft to rotate.

4. The pluggable circuit breaker according to any one of claims 1-3, characterized in that, The triggering assembly includes a cantilever link and a first cantilever and a second cantilever disposed at both ends of the cantilever link in the axial extension direction. The cantilever link is rotatably disposed on the side wall of the housing in the axial extension direction of the trip rod. The axial extension direction of the cantilever link is consistent with the axial extension direction of the trip rod. The extension directions of the first cantilever and the second cantilever are both perpendicular to the axial extension direction of the cantilever link. The second cantilever is located outside the side wall and is used to link with external structural components to drive the cantilever link to rotate. The tripping rod is provided with a first linkage rod, and the extension direction of the first linkage rod is perpendicular to the axial extension direction of the tripping rod. The first cantilever is provided with a first roller, the axial extension direction of the first roller is consistent with the axial extension direction of the cantilever connecting rod, and the first roller coincides with the first linkage rod in the radial direction of the first roller.

5. The pluggable circuit breaker according to claim 4, characterized in that, The triggering component further includes a third cantilever disposed on the cantilever link, the extension direction of the third cantilever being perpendicular to the axial extension direction of the cantilever link; The housing has a groove, and the triggering component also includes a reset spring, which is disposed in the groove and located between the third cantilever and the bottom wall of the groove in the depth direction of the groove.

6. The pluggable circuit breaker according to claim 5, characterized in that, The triggering component further includes a fourth cantilever disposed on the cantilever link, the extension direction of the fourth cantilever being perpendicular to the axial extension direction of the cantilever link. The triggering component also includes a limiting member, which is fixed to the housing and is located on the rotation path of the fourth cantilever.

7. The pluggable circuit breaker according to claim 4, characterized in that, The cantilever linkage includes a first rod and a second rod, with the first rod and the second rod extending in the same axial direction. The first rod has a limiting groove at one end facing the second rod, and the bottom wall of the limiting groove has a threaded hole. The second rod has a limiting protrusion at one end facing the first rod, and the limiting protrusion is installed in the limiting groove. The second rod also has a fixing hole that extends through the second rod along its axial direction. The triggering assembly also includes a bolt, which passes through the fixing hole and connects to the threaded hole.

8. The pluggable circuit breaker according to claim 4, characterized in that, The triggering component further includes a second roller disposed on the second cantilever, the axial extension direction of the second roller being consistent with the axial extension direction of the cantilever link, and the cantilever link and the second roller being located on opposite sides of the second cantilever in the axial extension direction of the cantilever link. The external structural component includes a first stop block, which includes a push-in lifting surface, a release surface, and a pull-out lifting surface. In the height direction of the housing, the distance between the release surface and the central axis of the cantilever link is L1, the distance between the pull-out lifting surface and the central axis of the cantilever link is L2, and the distance between the push-in lifting surface and the central axis of the cantilever link is L3, wherein L1≤L2 and L1≤L3. The distance between the central axis of the second roller and the central axis of the cantilever link is L4, where L4 > L1.

9. The pluggable circuit breaker according to claim 6, characterized in that, The circuit breaker also includes an indicating mechanism, which includes a fixed base, a rotating shaft fixed on the fixed base, and an indicating rod fixed on the rotating shaft. The fixed base is fixed to the housing. The axial extension direction of the rotating shaft is consistent with the axial direction of the cantilever link. A third roller is provided on the fourth cantilever. The axial extension direction of the third roller is consistent with the axial extension direction of the cantilever link. The third roller coincides with one end of the indicator rod in the radial direction. The other end of the indicator rod is provided with a first indicator surface and a second indicator surface. The arrangement direction of the first indicator surface and the second indicator surface is consistent with the height direction of the housing. An observation window is provided on the front wall of the housing in the depth direction at a position corresponding to the indicator rod. The observation window is used to observe the first indicator surface or the second indicator surface.

10. The pluggable circuit breaker according to claim 9, characterized in that, The indicating mechanism also includes a torsion spring sleeved on the rotating shaft. One end of the torsion spring is connected to the fixed base, and the other end of the torsion spring is connected to the indicating rod. The fixed base is provided with a limiting hole, through which the indicating rod passes. The size of the limiting hole is larger than the size of the portion of the indicating rod located within the limiting hole.

11. The pluggable circuit breaker according to any one of claims 1-3, characterized in that, The triggering assembly includes a second cantilever and a cantilever link. The cantilever link is rotatably mounted on the side wall of the housing in the axial extension direction of the trip rod. The cantilever link and the trip rod are coaxially arranged. One end of the cantilever link extends into the housing and is fixed to one end of the trip rod. The other end of the cantilever link extends out of the side wall and is fixed to the second cantilever. The extension direction of the second cantilever is perpendicular to the axial extension direction of the cantilever link. The second cantilever is used to link with an external structural component to drive the cantilever link to rotate.

12. The pluggable circuit breaker according to any one of claims 1-3, characterized in that, The triggering component includes a button, which is disposed on the side wall of the housing in the axial extension direction of the trip rod, and the button is movable relative to the side wall in the axial extension direction of the trip rod. The button includes a first pushing surface located inside the housing and a second pushing surface located outside the housing, the first pushing surface and the second pushing surface being located at opposite ends of the button in the axial extension direction of the trip lever; The tripping mechanism further includes a first linkage rod disposed on the tripping rod. The extension direction of the first linkage rod is perpendicular to the axial extension direction of the tripping rod. The first pushing surface and the first linkage rod are directly opposite each other in the axial extension direction of the tripping rod. The second pushing surface is used to link with an external structural component to drive the button to move along the axial extension direction of the tripping rod.

13. The pluggable circuit breaker according to claim 12, characterized in that, The triggering component also includes an outer frame, which is fixed to the housing. The outer frame includes a guide groove whose depth direction is consistent with the axial extension direction of the tripping rod. A guide hole is provided on the bottom wall of the guide groove. The button is inserted into the guide groove and passes through the guide hole. The button is movable relative to the outer frame in the depth direction of the guide groove.

14. The pluggable circuit breaker according to claim 13, characterized in that, The button also includes an undercut structure and a limiting step surface. In the axial extension direction of the release rod, the undercut structure and the limiting step surface are located on opposite sides of the bottom wall of the guide groove. The dimensions of the undercut structure and the limiting step surface are both larger than the dimensions of the guide hole. The dimension of the part of the button located between the undercut structure and the limiting step surface is smaller than the dimension of the guide groove.

15. The pluggable circuit breaker according to claim 14, characterized in that, The button has a hollow area in the middle part. In the axial extension direction of the tripping rod, the hollow area is located between the first pushing surface and the second pushing surface. The button also includes a limiting shaft located in the hollow area. The axial extension direction of the limiting shaft is consistent with the axial extension direction of the tripping rod. The triggering component also includes a reset spring, which is sleeved on the limiting shaft and located in the hollow area. The reset spring is located between the button and the bottom wall of the guide groove.

16. The pluggable circuit breaker according to claim 12, characterized in that, The external structural component includes a second stop for linkage with the second pushing surface. The second stop includes a push-in lifting surface, a release surface, and a pull-out lifting surface. In the axial extension direction of the release rod, the distance between the release surface and the side wall is L5, the distance between the push-in lifting surface and the side wall is L6, and the distance between the pull-out lifting surface and the side wall is L7, wherein L5≤L6 and L5≤L7. The distance between the end of the trip lever facing the trigger assembly and the trip surface is L8, and the length of the button in the axial extension direction of the trip lever is L9, wherein L8 < L9.

17. The pluggable circuit breaker according to claim 12, characterized in that, The circuit breaker also includes an indicator rod on the button, the indicator rod facing the front wall of the housing in the depth direction, the end of the indicator rod facing the front wall having a first indicator surface and a second indicator surface, the first indicator surface and the second indicator surface being arranged along the axial extension direction of the tripping rod, and an observation window being provided on the front wall at a position corresponding to the indicator rod, the observation window being used to observe the first indicator surface and the second indicator surface.

18. The pluggable circuit breaker according to claim 11, characterized in that, The circuit breaker also includes an indicator mechanism located at the other end of the axial extension direction of the trip lever, the indicator mechanism including an outer frame and a button; The outer frame is fixed to the housing. The outer frame includes a guide groove whose depth direction is consistent with the axial extension direction of the tripping rod. A guide hole is provided on the bottom wall of the guide groove. The button is inserted into the guide groove and passes through the guide hole. The button is movable relative to the outer frame in the depth direction of the guide groove. The rotation of the trip lever causes the button to move relative to the outer frame along the axial extension direction of the trip lever; The indicating mechanism further includes an indicating rod disposed on the button, the indicating rod facing the front wall in the depth direction of the housing, and a first indicating surface and a second indicating surface at one end of the indicating rod facing the front wall. The first indicating surface and the second indicating surface are arranged along the axial extension direction of the tripping rod. An observation window is provided on the front wall at a position corresponding to the indicating rod, and the observation window is used to observe the first indicating surface or the second indicating surface.

19. The pluggable circuit breaker according to claim 18, characterized in that, The portion of the button that passes through the guide hole has a first pushing surface. The tripping mechanism also includes a second linkage rod disposed on the other end of the tripping rod. The extension direction of the second linkage rod is perpendicular to the axial extension direction of the tripping rod. The first pushing surface and the second linkage rod are directly opposite each other in the axial extension direction of the tripping rod.

20. The pluggable circuit breaker according to claim 4, characterized in that, The circuit breaker also includes another tripping mechanism, which and the tripping mechanism are located on both sides of the operating mechanism in the axial extension direction of the tripping rod. The other tripping mechanism includes another tripping rod and a button, which is movably disposed relative to the sidewall in the axial extension direction of the tripping rod. The other trip lever is connected to the operating mechanism, and the other trip lever rotates around the axial extension direction of the other trip lever to drive the moving contact and stationary contact of the operating mechanism to contact or separate. The button includes a first pushing surface located inside the housing and a second pushing surface located outside the housing, the first pushing surface and the second pushing surface being located at opposite ends of the button in the axial extension direction of the other trip lever; The tripping mechanism further includes a first linkage rod disposed on the other tripping rod. The extension direction of the first linkage rod is perpendicular to the axial extension direction of the other tripping rod. The first pushing surface and the first linkage rod are directly opposite each other in the axial extension direction of the other tripping rod. The second pushing surface is used to link with an external structural component to drive the button to move along the axial extension direction of the other tripping rod.

21. The pluggable circuit breaker according to claim 20, characterized in that, The circuit breaker also includes an indicator rod on the button, the indicator rod facing the front wall of the housing in the depth direction, the end of the indicator rod facing the front wall having a first indicator surface and a second indicator surface, the first indicator surface and the second indicator surface being arranged along the axial extension direction of the other tripping rod, and an observation window being provided on the front wall at a position corresponding to the indicator rod, the observation window being used to observe the first indicator surface or the second indicator surface.

22. A power supply cabinet, characterized in that, The power cabinet includes a cabinet body, a socket frame, and a plurality of pluggable circuit breakers as described in any one of claims 1-21. The socket frame is disposed in the cabinet body, and the plurality of pluggable circuit breakers are arranged in the socket frame along the width direction of the cabinet body, and the width direction of the plurality of pluggable circuit breakers is consistent with the height direction of the cabinet body. The external structural component is disposed on the top or bottom wall of the socket frame in the height direction of the cabinet body.

23. The power cabinet according to claim 22, characterized in that, The width dimension of the housing is smaller than the height dimension of the housing, and the depth dimension of the housing is consistent with the depth dimension of the cabinet.

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