Plug-in circuit breaker and power supply cabinet

Abstract

The embodiment of the utility model provides a plug-in circuit breaker applied to a power cabinet and the power cabinet. The plug-in circuit breaker comprises a shell, a tripping mechanism and an operating mechanism, wherein the tripping mechanism and the operating mechanism are arranged on the shell; the tripping mechanism comprises a tripping rod and a trigger assembly, the tripping rod is connected with the operating mechanism, and the tripping rod rotates around the axial extension direction of the tripping rod and is used for driving a moving contact and a static contact of the operating mechanism to be contacted or separated; the triggering assembly is arranged on the side wall, in the axial extension direction of the tripping rod, of the shell and located at one end, in the axial extension direction of the tripping rod, and at least part of the triggering assembly is located on the outer side of the side wall and used for being in linkage with an external structural part; the trigger assembly is used for driving the tripping rod to rotate around the axial extension direction of the tripping rod. The automatic tripping device is suitable for a mounting mode of a circuit breaker placing surface in the width direction, and when the width direction of the circuit breaker is set in the height direction in the cabinet, the automatic tripping function can be realized.

Description

Technical Field

[0001] The present application relates to the technical field of circuit breakers, and in particular to a pluggable circuit breaker and a power supply cabinet. Background Art

[0002] In order to achieve hot plugging of circuit breakers, the circuit breaker in the related art includes a housing, a tripping mechanism and a button, wherein the axial extension direction of the rotating shaft of the tripping mechanism is in the width direction of the housing, and the button is arranged on the side wall of the housing in the height direction. When the circuit breaker is inserted into the cabinet, the button is squeezed by the cabinet so that the button moves into the housing along the height direction of the cabinet, driving the tripping mechanism to trip, thereby achieving hot plugging of the circuit breaker. However, in some installation scenarios, such as placing multiple circuit breakers in a limited space in the cabinet, the multiple circuit breakers need to be rotated 90 degrees and then arranged. At this time, the arrangement direction of the multiple circuit breakers is also the height direction of the circuit breakers. Since the button is arranged in the height direction of the circuit breaker, the cabinet cannot fully utilize the space in the arrangement direction of the multiple circuit breakers, and the cabinet cannot be miniaturized in the arrangement direction of the multiple circuit breakers. Utility Model Content

[0003] Embodiments of the present application provide a pluggable circuit breaker and a power cabinet to solve the problem of miniaturization of the cabinet when installing multiple circuit breakers.

[0004] In a first aspect, an embodiment of the present application provides a circuit breaker for use in a power cabinet, the circuit breaker comprising a housing and a tripping mechanism and an operating mechanism provided in the housing; the tripping mechanism comprising a tripping rod and a trigger assembly, at least a portion of the trigger assembly being located outside the housing, the trigger assembly being used to drive the tripping rod to rotate axially around the tripping rod, the rotation of the tripping rod being used to drive a moving contact and a stationary contact of the operating mechanism to contact or separate, and the operating mechanism and the trigger assembly being distributed at opposite ends of the tripping rod along the axial extension direction of the tripping rod.

[0005] The circuit breaker of this embodiment is suitable for certain usage scenarios, such as when multiple circuit breakers need to be installed in a power supply cabinet. It is necessary to fully utilize the space in the width direction of the cabinet, that is, to minimize the width dimension of the cabinet while being able to accommodate multiple circuit breakers. Because the trigger assembly is located at one axial end of the trip rod, the trigger assembly is located on the side wall of the housing in the axial extension direction of the trip rod. Due to the arrangement of the trip rod, the housing is generally not conducive to miniaturization in the axial extension direction of the trip rod. To minimize the width dimension of the cabinet in which multiple circuit breakers are placed, the circuit breaker can be placed in the cabinet so that the depth direction of the housing is consistent with the depth direction of the cabinet, and the axial extension direction of the trip rod is consistent with the height direction of the cabinet. In other words, the width direction of the housing is consistent with the height direction of the cabinet, and the height direction of the housing is consistent with the width direction of the cabinet. Placing the circuit breaker in this manner in the cabinet can accommodate 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 in the axial direction of the trip rod, the external structural member for interlocking with the trigger assembly needs to be located at a position corresponding to the side wall of the housing in the axial direction of the trip rod, that is, located at a position corresponding to the side wall of the housing in the width direction of the housing. Since the arrangement direction of the multiple circuit breakers in the cabinet is consistent with the height direction of the housing, the installation of external structural members in the height direction of the housing, that is, the width direction of the cabinet, can be avoided. 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 members, thereby effectively reducing the overall size of the multiple circuit breakers in the width direction of the cabinet, thereby miniaturizing the width direction of the cabinet. In addition, since the trigger assembly interlocks with the external structural member during the plugging and unplugging process of the circuit breaker, it can drive the trip rod to rotate. The rotation of the trip rod triggers the operating mechanism to trip and unlock, thereby driving the moving contact and the static contact to separate, thereby opening the circuit breaker, thereby ensuring the safety of the circuit breaker during hot plugging.

[0006] In some embodiments, the operating mechanism includes a rotating shaft, the movable contact is disposed on the rotating shaft, and rotation of the trip lever is used to drive rotation of the rotating shaft, thereby driving the movable contact into contact with or separation from the static contact; the axial extension direction of the trip lever is arranged parallel to the axial extension direction of the rotating shaft. In this embodiment, since the axial extension direction of the trip lever is arranged parallel to the axial extension direction of the rotating shaft, the steering force of the trip lever can be conveniently transmitted to the rotating shaft via the transmission assembly, which can simplify the structure of the transmission assembly, reduce the system error of the transmission assembly, and improve the transmission accuracy. Therefore, during the insertion and removal of the circuit breaker, the rotation of the trip lever triggers the operating mechanism to trip and unlock, accurately controlling the opening or closing of the circuit breaker, and improving the safety performance of the circuit breaker.

[0007] In some embodiments, the axial extension direction of the trip rod is consistent with the width direction of the shell, and the dimension of the shell in the width direction is greater than the dimension of the shell in the height direction; the operating mechanism includes an operating handle, and the operating handle is located on the front wall of the shell in the depth direction, and the operating handle is used to drive the rotating shaft to rotate. In this embodiment, the dimension of the shell in the width direction is greater than the dimension of the shell in the height direction. Therefore, after multiple circuit breakers are installed in the insertion frame, the width direction of the shell is the same as the height direction of the insertion frame, and the dimension of the shell in the width direction is greater than the dimension of the shell in the height direction. Moreover, since the trigger assembly is located on the side wall of the shell in the width direction, and the external structural parts are provided on the top wall 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 conducive to the miniaturized design of the insertion frame in the width direction.

[0008] In some embodiments, the trigger assembly includes a cantilever link and a first cantilever and a second cantilever provided at both ends of the axial extension direction of the cantilever link, the cantilever link is rotatably provided on the side wall, 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 on the outside of the side wall, and is used to link with the external structural member to drive the cantilever link to rotate; a first linkage rod is provided on the trip rod, and the extension direction of the first linkage rod is perpendicular to the axial extension direction of the trip rod; a first roller is provided on the first cantilever, and the axial extension direction of the first roller is consistent with the axial extension direction of the cantilever link, and the first roller coincides with the first linkage rod in the radial direction of the first roller. In this embodiment, since the first linkage rod is disposed on the trip rod, when the first linkage rod rotates about the axial extension direction of the trip rod, it drives the trip rod to rotate about its axial extension direction. The first cantilever is disposed on the cantilever connecting rod, so that the cantilever connecting rod can rotate about its axial extension direction, thereby driving the first cantilever to rotate about the axial extension direction of the cantilever connecting rod. The first roller is further disposed on the first cantilever, so that rotation of the first cantilever can drive the first roller to rotate about the axial extension direction of the cantilever connecting rod. The first linkage rod is located in a path along which the first roller rotates along the axial extension direction of the cantilever connecting rod. When the first roller rotates about the axial extension direction of the cantilever connecting rod, it can drive the first linkage rod to rotate about the axial extension direction of the trip rod, thereby driving the trip rod to rotate. The rotation of the trip rod triggers the tripping and unlocking of the operating mechanism, thereby causing the movable and stationary contacts of the operating mechanism to contact or separate, thereby closing or opening the circuit breaker. Furthermore, because the trip rod and cantilever link are not directly fixedly connected, but rather indirectly driven to rotate via the cooperation between the first linkage rod and the first roller, there is no need for the central axis of the trip rod to coincide with the central axis of the cantilever link. This means that the installation accuracy requirements for the relative positions of the trip rod and cantilever link are not very high, effectively reducing the difficulty of circuit breaker manufacturing. Furthermore, because this embodiment indirectly drives the trip rod's rotation via the cooperation between the first linkage rod and the first roller, it prevents the trigger assembly from accidentally triggering the trip rod's rotation during vibration.

[0009] In some embodiments, the trigger assembly further includes a third cantilever disposed on the cantilever connecting rod, wherein the extension direction of the third cantilever is perpendicular to the axial extension direction of the cantilever connecting rod; a groove is provided in the housing, and the trigger assembly further includes a reset spring, which is disposed in the groove, and the third cantilever and the reset spring overlap in the depth direction of the groove. In this embodiment, since a reset spring is provided between the third cantilever and the bottom wall of the groove, the reset spring can drive the third cantilever to rotate in a natural state. In addition, due to the provision of the reset spring, the second roller can always maintain contact with the push-in lifting surface, the tripping surface, and the extraction lifting surface during the insertion and extraction of the circuit breaker, thereby ensuring that the push-in lifting surface, the tripping surface, and the extraction lifting surface can always drive the second roller to drive the second cantilever to rotate in real time during the insertion and extraction of the circuit breaker, thereby ensuring the action accuracy.

[0010] In some embodiments, the trigger assembly further includes a fourth cantilever provided on the cantilever connecting rod, wherein the extension direction of the fourth cantilever is perpendicular to the axial extension direction of the cantilever connecting rod; the trigger assembly further includes a limiter, which is fixed to the housing and is located on the rotation path of the fourth cantilever. In this embodiment, since the limiter 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 connecting rod, it will be blocked by the limiter to limit the fourth cantilever from continuing to rotate, thereby limiting the second cantilever from continuing to rotate. Under the action of the limiter, when the circuit breaker is completely pulled out of the insertion frame, the limiter can also limit the fourth cantilever to a specified position, thereby limiting the second cantilever to a specified position, so that the linkage between the second roller and the first block can be guaranteed when the insertion frame is inserted next time.

[0011] In some embodiments, the cantilever connecting rod includes a first rod and a second rod, the first rod and the second rod extending in the same axial direction, a limiting groove being defined on one end of the first rod facing the second rod, a threaded hole being defined on the bottom wall of the limiting groove, a limiting protrusion being defined on one end of the second rod facing the first rod, the limiting protrusion being mounted within the limiting groove, the second rod further defining a fixing hole extending through the second rod in the axial direction of the second rod, the trigger assembly further comprising a bolt passing through the fixing hole and connected to the threaded hole. Because the first and second rods are detachably connected, there is no need to define a notch in the side wall; instead, a through hole in the side wall is required to facilitate mounting the cantilever connecting rod on the side wall.

[0012] In some embodiments, the trigger assembly further includes a second roller disposed on the second cantilever, the axial extension direction of the second roller being aligned 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 member includes a first stopper, the first stopper including 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, the cantilever can be ensured to contact and interact with the push-in lifting surface, the tripping surface, and the pull-out lifting surface during insertion and removal of the circuit breaker from the frame. Since L1≤L2, when the circuit breaker is inserted into the insertion frame, that is, when the connecting plug is inserted 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 at the tripping surface, the tripping rod separates the moving contact and the static contact, causing the circuit breaker to open, thereby preventing electrical sparks during the insertion of the connecting plug into the plug-in structure, avoiding the generation of arcs, and ensuring safety during circuit breaker insertion. Since L1≤L3, when the circuit breaker is pulled out of the insertion frame, that is, when the connecting plug is pulled out of the self-plugging structure, 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 at the tripping surface, the tripping rod separates the moving contact and the static contact, so that the circuit breaker is opened, thereby preventing electrical sparks from occurring during the process of pulling out the connecting plug from the self-plugging structure, avoiding the generation of arcs, and ensuring safety when the circuit breaker is pulled out.

[0013] In some embodiments, the circuit breaker further includes an indicating mechanism, which includes a fixed seat, a rotating shaft fixed on the fixed seat, an indicating rod fixed on the rotating shaft, and a torsion spring sleeved on the rotating shaft. The fixed seat is fixed to the shell, 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 seat, and the other end of the torsion spring is connected to the indicating rod; the fixed seat is provided with a limiting hole, the indicating rod passes through the limiting hole, and the size of the limiting hole is larger than the size of the part of the indicating rod located in 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, the third roller coincides with one end of the indicating rod in the radial direction of the third roller, 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 shell, and an observation window is provided at a position corresponding to the indicating rod on the front wall in the depth direction of the shell, and the observation window is used to observe the first indicating surface or the second indicating surface. In this embodiment, a torsion spring can be used to apply a torsional force to the indicator rod to drive the indicator rod to rotate around the rotating shaft until the second indicating surface is directly opposite the observation window. That is, when the circuit breaker is completely connected to the connecting plug or completely separated from the connecting plug, the torsion spring can drive the indicator rod to rotate until the second indicating surface is directly opposite the observation window. Since the indicator rod and the cantilever connecting rod are not directly fixed, but are indirectly linked and coordinated through the third roller and one end of the indicator rod, it can effectively prevent the indicator rod from reversely driving the cantilever connecting rod to rotate during vibration, thereby reducing the risk of the trigger assembly accidentally triggering the trip rod. In addition, in this embodiment, the rotation of the cantilever connecting rod can simultaneously drive the trip rod and the indicator rod to rotate, thereby improving the consistency of the actions of the trip rod and the indicator rod, and thereby improving the accuracy of the indicator mechanism in indicating whether the circuit breaker is closed or open.

[0014] In some embodiments, the trigger assembly includes a second cantilever and a cantilever connecting rod. The cantilever connecting rod is rotatably mounted on the side wall and coaxially arranged with the trip rod. One end of the cantilever connecting rod extends into the housing and is fixed to one end of the trip rod. The other end of the cantilever connecting rod extends out of the side wall and is fixed to the second cantilever. The second cantilever extends perpendicular to the axial extension of the cantilever connecting rod. The second cantilever is configured to interlock with an external structural member to drive the cantilever connecting rod to rotate. In this embodiment, since the cantilever connecting rod and the trip rod are coaxially arranged and directly fixed together, direct transmission is possible. This improves the transmission accuracy of the cantilever connecting rod and the trip rod, thereby enhancing the safety performance of the circuit breaker during hot swapping. Furthermore, the trigger assembly in this embodiment has a simple structure, high stability, and low material cost.

[0015] In some embodiments, the trigger assembly includes a button disposed on a sidewall, the button being movable relative to the sidewall in an axial direction of the trip rod; the button including a first push surface located within a housing and a second push surface located outside the housing, the first push surface and the second push surface being located at opposite ends of the button in the axial direction of the trip rod; and the trip mechanism further includes a first linkage rod disposed on the trip rod, the first linkage rod extending perpendicular to the axial direction of the trip rod, the first push surface and the first linkage rod facing each other in the axial direction of the trip rod, and the second push surface being configured to engage with an external structural member to drive the button to move in the axial direction of the trip rod. In this embodiment, when the button moves toward the trip rod, the first push surface presses against the first linkage rod, and under the action of the first push surface, the first linkage rod rotates about the axial direction of the trip rod. Since the first linkage rod is disposed on the trip rod, the first linkage rod can drive the trip rod to rotate, thereby driving the movable contact and the stationary contact to contact or separate, thereby closing or opening the circuit breaker. Since the trip rod and the button are not directly fixedly connected, but the trip rod is 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 trigger assembly from accidentally triggering the trip rod to rotate during vibration.

[0016] In some embodiments, the trigger assembly further includes an outer frame secured to the housing. The outer frame includes a guide groove whose depth coincides with the axial extension of the trip rod. A guide hole is defined in the bottom wall of the guide groove. The button is inserted into and through the guide hole, and is movable relative to the outer frame in the depth direction of the guide groove. In this embodiment, the provision of the guide groove and guide hole allows the button to precisely move along a predetermined path, thereby improving the precision of the fit between the button and the trip rod and enhancing the safety of the circuit breaker during hot swapping.

[0017] In some embodiments, the button further includes an undercut structure and a limiting step surface. In the axial extension direction of the trip 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, and the dimensions of the portion of the button located between the undercut structure and the limiting step surface are smaller than the dimensions of the guide groove. In this embodiment, the provision of the undercut structure and the limiting step surface ensures that the dimensions of the undercut structure and the limiting step surface are both larger than the dimensions of the guide hole, thereby preventing the button from disengaging from the outer frame and limiting the displacement distance of the button in the axial extension direction of the trip rod. Furthermore, the design of the undercut structure facilitates the button's insertion through the guide hole and facilitates the button's removal from the guide hole from the undercut structure during maintenance, thereby detaching the button from the outer frame.

[0018] In some embodiments, the button has a hollowed-out region in its middle portion, located between the first and second pushing surfaces in the axial extension direction of the trip rod. The button also includes a limiting shaft located in the hollowed-out region, with the limiting shaft extending axially in the same direction as the trip rod. The trigger assembly also includes a return spring, which is sleeved around the limiting shaft and located in the hollowed-out region, and is located between the button and the bottom wall of the guide slot. In this embodiment, when the second pushing surface of the button is not subjected to the force applied by the second stopper, the return spring applies an elastic force to the button, driving it to return to a position partially facing the side wall, thereby facilitating interaction with the insertion lifting surface, the tripping surface, and the extraction lifting surface of the second stopper during subsequent insertion and removal of the circuit breaker.

[0019] In some embodiments, the external structural member includes a second stopper for interlocking with the second push surface. The second stopper includes a push-in lifting surface, a tripping surface, and a pull-out lifting surface. In the axial extension direction of the trip rod, the distance between the tripping 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, where L5 ≤ L6 and L5 ≤ L7. The distance between the end of the trip rod facing the trigger assembly and the tripping surface is L8, and the length of the button in the axial extension direction of the trip rod is L9, where L8 < L9. In this embodiment, because L8 < L9, when the button is pushed into the lifting surface or pulled out of the lifting surface and pressed toward the trip rod, when the button moves to the tripping surface, the first push surface of the button will inevitably drive the first linkage rod to rotate a certain angle, thereby achieving rotation of the trip rod. Moreover, because 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 lifting surface. During this process, the pushing lifting surface can push the button toward the tripping rod, thereby driving the first linkage rod to rotate. Similarly, because 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 lifting surface. During this process, the pulling lifting surface can push the button toward the tripping rod, thereby driving the first linkage rod to rotate. When the button moves to the tripping surface position, the moving contact and the static contact separate, and the circuit breaker is now in the open state, thereby preventing electrical sparks during the insertion and removal of the connecting plug and the plug-in structure, avoiding the generation of arcs, and ensuring safety when the circuit breaker is pulled out.

[0020] In some embodiments, the circuit breaker further includes an indicator rod disposed on the button, the indicator rod facing the front wall in the depth direction of the housing. A first indicator surface and a second indicator surface are provided on one end of the indicator rod facing the front wall. The first indicator surface and the second indicator surface 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 indicator surface and the second indicator surface. In this embodiment, because the indicator rod is disposed on the button, when the button moves along the axial direction of the trip rod, it also drives the indicator rod to move along the axial direction of the trip rod. Since the first indicator surface and the second indicator surface are arranged along the axial extension direction of the trip rod, when the button moves to different positions, the first indicator surface and the second indicator surface also change to different positions. Specifically, when the second push surface of the button moves to the trip surface, the trip rod rotates to separate the moving contact and the static contact. At this time, the first indicator surface is 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 the pull-out lifting surface, the trip rod rotates to make the moving contact contact with the static contact. At this time, the second indicator surface is opposite to the observation window to show that the circuit breaker is in the closed state.

[0021] In some embodiments, the circuit breaker further includes an indicating mechanism, which is located at the other end of the axial extension direction of the trip rod, and the indicating mechanism includes an outer frame and a button; the outer frame is fixed to the shell, and the outer frame includes a guide groove whose depth direction is consistent with the axial extension direction of the trip rod, and a guide hole is provided on the bottom wall of the guide groove, and the button is inserted into the guide groove and passes through the guide hole, and the button is movable relative to the outer frame in the depth direction of the guide groove; the rotation of the trip rod drives the button to move relative to the outer frame along the axial extension direction of the trip rod; the indicating mechanism further includes an indicating rod provided on the button, the indicating rod facing the front wall of the shell in the depth direction, and a first indicating surface and a second indicating surface are provided at one end of the indicating rod facing the front wall, and the first indicating surface and the second indicating surface are arranged along the axial extension direction of the trip rod, and an observation window is provided at a position corresponding to the indicating rod on the front wall, and the observation window is used to observe the first indicating surface or the second indicating surface. In this embodiment, after the trigger assembly is linked with the external structural member, it drives the trip rod to rotate, and the rotation of the trip rod drives the circuit breaker to close or open. At the same time, the trip rod drives the button to move along the axial direction of the trip rod, and the movement of the button drives the indicator rod to move, so that the first indicating surface or the second indicating surface moves to the observation window to indicate the open or closed state.

[0022] In some embodiments, the portion of the button that passes through the guide hole is provided with a first push surface. The trip mechanism further includes a second linkage rod disposed on the other end of the trip rod. The second linkage rod extends perpendicularly to the axial extension direction of the trip rod, and the first push surface and the second linkage rod are aligned in the axial extension direction of the trip rod. In this embodiment, under the action of the first linkage rod on the first push surface, the button can move along the axial extension direction of the trip rod, causing the first indicator surface or the second indicator surface to move to the observation window to indicate the open or closed state.

[0023] In some embodiments, the circuit breaker further comprises another trip mechanism, wherein the other trip mechanism and the trip mechanism are located on either side of the operating mechanism in the axial extension direction of the trip rod, and the other trip mechanism comprises another trip rod, an outer frame, and a button; the other trip rod is connected to the operating mechanism, and the other trip rod rotates about the axial extension direction of the other trip rod to drive the movable contact and the static contact of the operating mechanism into contact or separation; the outer frame is fixed to the housing, and the outer frame comprises a guide groove whose depth direction is consistent with the axial extension direction of the other trip rod, and a guide hole is defined in the bottom wall of the guide groove, and the button is inserted into the guide groove and passes through the guide hole, and the button is movable relative to the outer frame in the depth direction of the guide groove; the button comprises a second push surface located on the outside of the housing, and the second push surface is configured to be linked to an external structural member; the circuit breaker further comprises an indicator rod disposed 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 are defined on one end of the indicator rod facing the front wall, and the first indicator surface and the second indicator surface are arranged along the axial extension direction of the other trip rod, and 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 indicator surface or the second indicator surface. In this embodiment, since the circuit breaker in this embodiment is provided with two tripping mechanisms, redundant safety is achieved, and the safety of hot plugging of the circuit breaker can be guaranteed when a problem occurs in one of the tripping mechanisms.

[0024] In some embodiments, the portion of the button that passes through the guide hole is provided with a first pushing surface, and the trip mechanism further includes a second linkage rod provided on the other trip rod, the second linkage rod extending in a direction perpendicular to the axial extension direction of the other trip rod, and the first pushing surface and the second linkage rod facing each other in the axial extension direction of the other 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 about the axial extension direction of the trip rod. Because the first linkage rod is provided on the trip rod, the first linkage rod can drive the trip rod to rotate, thereby driving the moving contact and the static contact to contact or separate, thereby closing or opening the circuit breaker.

[0025] In the second aspect, an embodiment of the present application provides a power supply cabinet, which includes a cabinet body, a plug-in frame, and a plurality of plug-in circuit breakers as described in any one of the first aspects above. The plug-in frame is arranged in the cabinet body, and the plurality of plug-in circuit breakers are arranged in the plug-in frame along the width direction of the cabinet body, and the width direction of the plurality of plug-in circuit breakers is consistent with the height direction of the cabinet body, and the external structural parts are arranged on the top wall or bottom wall of the plug-in frame in the height direction of the cabinet body. In this embodiment, in the width direction of the cabinet body, the space between the shells of two adjacent circuit breakers does not need to be occupied by external structural parts, thereby effectively reducing the overall size of the plurality of 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 trigger component can drive the circuit breaker to open when it is linked with the external structural parts during the plugging and unplugging process of the circuit breaker with the connecting plug, the safety of the circuit breaker during the hot plugging process can be ensured.

[0026] In some embodiments, the width of the housing is smaller than its height, and its depth is consistent with the depth of the cabinet. In this embodiment, after multiple circuit breakers are installed in the subrack, the width of the housing is the same as the height of the subrack, and the width of the housing is larger than its height. Furthermore, because the trigger assembly is located on the side wall of the housing in the width direction, and the external structural components are located on the top or bottom wall of the subrack, the spacing between adjacent circuit breakers in the width direction of the subrack can be effectively reduced, facilitating a compact design of the subrack in the width direction. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art.

[0028] Figure 1 A schematic diagram of the structure of a power supply cabinet provided in an embodiment of the present application;

[0029] Figure 2 for Figure 1 A schematic diagram of the working principle of the power supply cabinet in the embodiment;

[0030] Figure 3 A schematic diagram of the mechanism for assembling multiple circuit breakers in a plug-in frame of a power cabinet;

[0031] Figure 4 This is a schematic diagram of the structure of a circuit breaker installed in a plug-in frame;

[0032] Figure 5 A schematic structural diagram of a circuit breaker provided in an embodiment of the present application;

[0033] Figure 6 for Figure 5 A schematic structural diagram of the circuit breaker in the embodiment from another angle;

[0034] Figure 7 for Figure 5 A simplified schematic diagram of the assembly of a trip rod and a partial structure of an operating mechanism in a circuit breaker in an embodiment;

[0035] Figure 8 for Figure 5 A schematic diagram of a portion of the structure of a circuit breaker in an embodiment;

[0036] Figure 9 for Figure 8 An exploded schematic diagram of the structure in the embodiment;

[0037] Figure 10 It is a projection view of the width direction of the housing when the circuit breaker and the external structural parts are matched;

[0038] Figure 11 Another structural schematic diagram of the cantilever connecting rod provided in an embodiment of the present application;

[0039] Figure 12 Schematic diagram of the second roller in the circuit breaker in this embodiment in contact with the tripping surface;

[0040] Figure 13 is a schematic diagram of the second roller in the circuit breaker of this embodiment in contact with the push-in lifting surface;

[0041] Figure 14 A schematic structural diagram of another circuit breaker provided in an embodiment of the present application;

[0042] Figure 15 for Figure 14 A schematic diagram of a portion of the structure of a circuit breaker in an embodiment;

[0043] Figure 16 for Figure 15 An exploded schematic diagram of the structure in the embodiment;

[0044] Figure 17 Schematic diagram of the second roller in the circuit breaker in this embodiment in contact with the tripping surface;

[0045] Figure 18 is a schematic diagram of the second roller in the circuit breaker of this embodiment in contact with the push-in lifting surface;

[0046] Figure 19 A schematic structural diagram of another circuit breaker provided in an embodiment of the present application;

[0047] Figure 20 for Figure 19 A schematic diagram of a portion of the structure of a circuit breaker in an embodiment;

[0048] Figure 21 for Figure 20 An exploded schematic diagram of the structure in the embodiment;

[0049] Figure 22 for Figure 14 A schematic diagram of a projection of a portion of the structure of the circuit breaker in the embodiment in the width direction of the housing;

[0050] Figure 23 Schematic diagram of the second pushing surface of the circuit breaker in this embodiment in contact with the tripping surface;

[0051] Figure 24 Schematic diagram of the second pushing surface of the circuit breaker in this embodiment in contact with the pushing lifting surface;

[0052] Figure 25 A schematic structural diagram of another circuit breaker provided in an embodiment of the present application;

[0053] Figure 26 A schematic structural diagram of another circuit breaker provided in an embodiment of the present application;

[0054] Figure 27 A schematic structural diagram of another circuit breaker provided in an embodiment of the present application.

[0055] Description of reference numerals:

[0056] X, depth direction of the housing; Z, height direction of the housing; Y, width direction of the housing; Y, axial extension direction of the trip rod; Y, axial extension direction of the cantilever connecting rod;

[0057] 1. Power cabinet; 2. Cabinet; 3. Power module; 4. Circuit breaker; 5. External structural parts; 6. Plug-in frame; 6a. Top wall; 6b. Bottom wall; 7. Connector plug;

[0058] 10. Trip mechanism; 11. Trip lever; 12. Trigger assembly; 121. Cantilever connecting rod; 121a. First lever; 121b. Second lever; 1210. Fixing hole; 1211. Limiting groove; 1212. Limiting protrusion; 1213. Threaded hole; 1214. Fixing hole; 1215. Bolt; 1216. 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. Fixed seat; 1301. Limiting member; 131. Button; 1311. First pushing surface; 1312. Second pushing surface; 1313. Undercut structure; 1314. Limiting step surface; 1315. Hollow area; 1316. Limiting shaft; 132. Outer frame; 1321. Guide groove; 1322. Guide hole; 1323. Spring clearance groove; 133. Return spring;

[0059] 15. First linkage rod; 16. Second linkage rod;

[0060] 20. Operating mechanism; 21. Moving contact; 22. Static contact; 23. Operating handle; 24. Transmission assembly; 25. Rotating shaft;

[0061] 30. Plug-in mechanism;

[0062] 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;

[0063] 51, first stopper; 511, push-in lifting surface; 512, release surface; 513, pull-out lifting surface; 52, second stopper; 521, push-in lifting surface; 522, release surface; 523, pull-out lifting surface;

[0064] 60. Indicating mechanism; 61. Indicating rod; 611. First indicating surface; 612. Second indicating surface; 62. Fixing seat; 621. Positioning hole; 63. Rotating shaft; 64. Torsion spring;

[0065] 70. Instruction agency. DETAILED DESCRIPTION

[0066] The following first explains some of the terms involved in the embodiments of this application.

[0067] The terms "first", "second", "third", "fourth", etc. in the description and claims of the embodiments of the present application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can, for example, be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0068] In this specification, the terms "perpendicular" and "parallel" are explained.

[0069] Vertical: The vertical defined in this application is not limited to an absolute vertical intersection relationship (angle of 90 degrees). It allows for non-absolute vertical intersection relationships caused by factors such as assembly tolerance, design tolerance, and structural flatness. It allows for errors in a small angle range. For example, the assembly error range of 80 to 100 degrees can be understood as a vertical relationship.

[0070] Parallel: The parallel 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 absolute parallelism is not caused by factors such as assembly tolerance, design tolerance, and the influence of structural flatness. These situations will lead to the sliding fitting part and the first door panel not being absolutely parallel, but this application also defines this situation as parallel.

[0071] Circuit breakers can be used in the power supply and distribution system of household electricity to connect, carry, and disconnect the current between the power supply network and the household circuit. Circuit breakers can also be used in the power supply and distribution system of enterprise power equipment or public power equipment to connect, carry, and disconnect the current between the power supply network and enterprise power equipment or public power equipment. Specifically, when the power equipment (such as 4G base stations, 5G base stations, etc.) needs to work normally, the user can switch the circuit breaker to the closed state so that the power supply network can provide the power required for normal operation to the power equipment. When the power equipment needs to be inspected and maintained, the user can switch the circuit breaker to the disconnected state to facilitate the inspection and maintenance of the power equipment. In addition, during certain periods of time, the demand for certain power equipment (such as a 4G base station or 5G base station in a remote area) may be low or there may be no demand. The user can switch the circuit breaker to the disconnected state to save energy.

[0072] The circuit breaker has two states: closed and open. When closed, power is on, and when open, power is off.

[0073] Figure 1 A schematic structural diagram of a power supply cabinet 1 provided in an embodiment of the present application; Figure 2 for Figure 1 A schematic diagram of the working principle of the power cabinet 1 in the embodiment; Figure 3 A schematic diagram of a mechanism in which multiple circuit breakers 4 are assembled in a plug-in frame 6 of a power cabinet 1;

[0074] Reference Figure 1 and Figure 2 The power supply cabinet 1 includes a cabinet body 2, an Uninterruptible Power System (UPS) module housed within the cabinet body 2, a power module 3, and multiple circuit breakers 4. The UPS module includes a battery pack for power supply or storage. The power module 3 converts DC power into AC power, or vice versa. For example, the power module 3 may be an inverter. The circuit breakers 4 connect or disconnect the power supply cabinet 1 from the external power grid.

[0075] For example, in some embodiments, reference Figure 2The power supply cabinet 1 includes four circuit breakers 4, which are respectively a first circuit breaker, a second circuit breaker, a third circuit breaker and a fourth circuit breaker. The first circuit breaker and the second circuit breaker are arranged between the UPS module and the power grid, the second circuit breaker is arranged between the UPS module and the power device to be powered, the third circuit breaker is arranged between the power grid and the bypass module, and the fourth circuit breaker is arranged between the power grid and the power device to be powered. The first circuit breaker can ensure safe connection or disconnection between the UPS module and the power grid, and the second circuit breaker can ensure safe connection or disconnection between the UPS module and the power device. When there is a problem with the branch where the UPS module is located, the third circuit breaker can be used to connect and use the bypass module to power the power device. When there are problems with both the branch where the UPS module is located and the branch where the bypass module is located, the fourth circuit breaker can be used to connect or disconnect the power grid and the power device to be powered. It can be understood that the bypass module also includes a battery pack for power supply or storage.

[0076] Reference Figure 1 In some embodiments, the width of the circuit breaker 4 is greater than its height, and the depth of the circuit breaker 4 is consistent with the depth of the cabinet 2. To accommodate multiple circuit breakers 4 within a limited space, the multiple circuit breakers 4 are arranged within the cabinet 2 along the width of the cabinet 2, with the widths of the multiple circuit breakers 4 being consistent with the height of the cabinet 2. This arrangement effectively utilizes the width of the cabinet 2, allowing for the placement of more circuit breakers 4 within the limited size of the cabinet 2.

[0077] Reference Figure 3 , multiple circuit breakers 4 each include a tripping mechanism 10 and an operating mechanism 20, a moving contact 21 of the operating mechanism 20 (such as Figure 7 ) and static contact 22 (such as Figure 7 ) contact, the circuit breaker 4 is in the closed state. When the movable 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 trip mechanism 10 is linked with the external structure 5, the trip mechanism 10 triggers the operating mechanism 20 to trip and unlock, so that the movable contact 21 and the stationary contact 22 of the operating mechanism 20 contact or separate, driving the circuit breaker 4 to close or open.

[0078] Reference Figure 3In some embodiments, the power cabinet 1 further includes a plug-in frame 6, and multiple circuit breakers 4 are installed in the same plug-in frame 6, and the height direction of the plug-in frame 6 is consistent with the width direction of the circuit breaker 4. Under the premise that more circuit breakers 4 can be placed when the size of the cabinet 2 is limited, in order to achieve hot plugging of the circuit breaker 4 and improve the safety performance of the circuit breaker 4 during the plug-in and plug-out process, in some embodiments, the part of the tripping mechanism 10 used to trigger with the external linkage part is provided on the side wall 45 in the width direction of the circuit breaker 4, and the external structural member 5 is provided on the top wall 6a or bottom wall 6b of the plug-in frame 6. It can be understood that one tripping mechanism 10 corresponds to one external structural member 5. Since multiple circuit breakers 4 are provided in the same plug-in frame 6, and thus multiple circuit breakers 4 have multiple tripping mechanisms 10, the top wall 6a or bottom wall 6b of the plug-in frame 6 is provided with multiple external structural members 5. In this embodiment, after the multiple circuit breakers 4 are installed in the subrack 6, the width direction of the circuit breakers 4 is the same as the height direction of the subrack 6, and the width direction of the circuit breaker 4 is larger than the height direction of the circuit breaker 4. Moreover, because the portion of the tripping mechanism 10 of the multiple circuit breakers 4 used to trigger 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 subrack 6, the spacing between adjacent circuit breakers 4 in the width direction of the subrack 6 can be effectively reduced, and the space in the width direction of the subrack 6 can be fully utilized to accommodate a larger number of circuit breakers 4 in the subrack 6. It should be noted that the width direction of the subrack 6 is consistent with the width direction of the cabinet 2.

[0079] Specifically, when the circuit breaker 4 is removed from or inserted into the insertion frame 6, the trigger portion of the trip 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, causing the trip mechanism 10 to trigger the operating mechanism 20 to trip and unlock, and drive the moving contact 21 and static contact 22 of the operating mechanism 20 to contact or separate, thereby driving the circuit breaker 4 to close or open. This allows the circuit breaker 4 to be safely hot-swapped, reducing maintenance costs.

[0080] It is understandable that the number of circuit breakers 4 in the same plug-in frame 6 may be four as shown in the accompanying drawings, or may be two, three, or other numbers of circuit breakers 4 .

[0081] like Figure 4In other embodiments, a circuit breaker 4 may be provided in a single subrack 6 . The height of the subrack 6 coincides with the width of the circuit breaker 4 , the height of the subrack 6 coincides with the height of the cabinet 2 , and the width of the subrack 6 coincides with the width of the cabinet 2 . The portion of the trip mechanism 10 that triggers the external linkage is located on the widthwise sidewall 45 of the circuit breaker 4 , while the external structural member 5 is located on the top wall 6 a or bottom wall 6 b of the subrack 6 . In this embodiment, multiple subracks 6 are required in the cabinet 2 to accommodate multiple circuit breakers 4 . Because the portions of the trip mechanisms 10 for multiple circuit breakers 4 that trigger the external structural member 5 are located on the widthwise sidewall 45 of the circuit breaker 4 , and the external structural member 5 is located on the top wall 6 a or bottom wall 6 b of the subrack 6 , the overall dimensions of a single circuit breaker 4 and subrack 6 in the widthwise direction of the cabinet 2 can be effectively reduced, thereby fully utilizing the widthwise space of the cabinet 2 and accommodating a greater number of circuit breakers 4 in the cabinet 2 .

[0082] like Figure 1 and Figure 4 , the circuit breaker 4 also includes a plug-in mechanism 30, and the power supply cabinet 1 includes a connecting plug 7 provided in the cabinet body 2, and the connecting plug 7 is inserted into the plug-in mechanism 30 to realize the electrical connection between the connecting plug 7 and the circuit breaker 4. The hot plugging 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 connecting plug 7. In some embodiments, the connecting plug 7 can be a plug-in copper bus. It is understandable that the connecting plug 7 can be connected to the external power grid and the power module 3 of the power supply cabinet 1 respectively, and can also be connected to the device to be powered and the power module 3 of the power supply cabinet 1 respectively.

[0083] Figure 5 A schematic structural diagram of a circuit breaker 4 provided in an embodiment of the present application; Figure 6 for Figure 5 A schematic structural diagram of the circuit breaker 4 in the embodiment from another angle.

[0084] Reference Figure 5 and Figure 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 provided on or within the housing 40. The plug-in mechanism 30 is used to connect to a connecting plug 7 (such as Figure 4) connection to connect the circuit breaker 4 to the desired branch. The operating mechanism 20 is used to control the closing or opening of the circuit breaker 4. The trip mechanism 10 can also trigger the moving contact 21 and the static contact 22 of the operating mechanism 20 to contact or separate to achieve the closing or opening of the circuit breaker 4. It will 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 can also be indirectly controlled by controlling the trip mechanism 10 to trip and unlock, thereby achieving the closing or opening of the circuit breaker 4.

[0085] Reference Figure 4-Figure 6 In some embodiments, the shell 40 is roughly rectangular, and the shell 40 includes a rear wall and a front wall 42 opposite to each other in the depth direction X of the shell 40, a bottom wall 43 and a top wall 44 opposite to each other in the height direction Z of the shell 40, and two side walls 45 opposite to each other in the width direction Y of the shell 40. For the sake of convenience of description, the two side walls 45 are set as a first side wall 451 and a second side wall 452 respectively.

[0086] It should be noted that the depth direction X of the shell 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 shell 40 is consistent with the height direction of the circuit breaker 4 mentioned above, and the width direction Y of the shell 40 is consistent with the width direction of the circuit breaker 4 mentioned above.

[0087] Reference Figure 4-Figure 6 In some embodiments, the rear wall is provided with a socket (not shown) for receiving the connecting plug 7. After the circuit breaker 4 is inserted into the insertion frame 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 of the operating handle 23. It is understood that by moving the operating handle 23 (for example, by rotating or pressing it), the movable contact 21 and the stationary contact 22 of the operating mechanism 20 can be brought into contact or separated, thereby closing or opening the circuit breaker 4.

[0088] Reference Figure 5 and Figure 6In some embodiments, the trip mechanism 10 includes a trip rod 11 and a trigger assembly 12. At least a portion of the trigger assembly 12 is located outside the side wall 45 to interact with the external structural member 5. For example, when the circuit breaker 4 is inserted into or removed from the insertion frame 6, the portion of the trigger assembly 12 located outside the side wall 45 is acted upon by the external structural member 5, causing the trigger assembly 12 to drive the trip rod 11 to rotate about its axis, that is, to rotate the trip rod 11 about the central axis of the trip rod 11, that is, about the rotation axis of the trip rod 11. In other words, the axial extension direction Y of the trip rod is consistent with the extension direction of the rotation axis of the trip rod 11 and the extension direction of the central axis of the trip rod 11. The shape of the trip rod 11 can be cylindrical or a rod-shaped structure of other shapes. The axial extension direction Y of the trip rod 11 is also the length direction of the trip rod 11.

[0089] The tripping rod 11 is connected to the operating mechanism 20, for example, to the transmission assembly 24 (such as Figure 7 ) is connected, and the transmission assembly 24 is used to connect the trip rod 11 with the moving contact 21 and the static contact 22 of the operating mechanism 20, so that the trip rod 11 can indirectly control the contact or separation of the moving contact 21 and the static contact 22 of the operating mechanism 20.

[0090] Specifically, the trip rod 11 rotates about the axial extension direction of the trip rod 11, and the rotation of the trip rod 11 triggers the operating mechanism 20 to trip and unlock, thereby driving the transmission assembly 24 to drive the movable contact 21 and the static contact 22 into contact or separation, thereby closing or opening the circuit breaker 4. It should be noted that after the rotation of the trip rod 11 triggers the operating mechanism 20 to trip and unlock, the trip rod can directly act on the transmission assembly 24 to drive the movable contact 21 and the static contact 22 into contact or separation, or it can indirectly drive the transmission assembly 24 to drive the movable contact 21 and the static contact 22 into contact or separation after the rotation of the trip rod 11 triggers the operating mechanism 20 to trip and unlock.

[0091] Reference Figure 1 、 Figure 3 、 Figure 5 and Figure 6In some embodiments, the trigger assembly 12 is disposed on a side wall 45 of the housing 40 in the axial extension direction Y of the trip rod 11, that is, disposed on the side wall 45 of the housing 40 in the width direction Y, such as 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. In other words, 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. In other words, 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 usage scenarios, such as when multiple circuit breakers 4 need to be installed in the power supply cabinet 1. It is necessary to fully utilize the space in the width direction of the cabinet 2. In other words, while being able to accommodate multiple circuit breakers 4, the width dimension of the cabinet 2 is minimized as much as possible. Because the trigger assembly 12 is disposed at one axial end of the trip rod 11 and is located on the side wall 45 of the housing 40 in the axial extension direction Y of the trip rod 11, the arrangement of the trip rod 11 generally hinders miniaturization of the housing 40 in the axial extension direction Y of the trip rod 11. To minimize the width of the cabinet 2 housing multiple circuit breakers 4, the circuit breakers 4 can be placed within the cabinet 2 such that the depth direction X of the housing 40 coincides with the depth direction of the cabinet 2, and the axial extension direction Y of the trip rod 11 coincides with the height direction of the cabinet 2. In other words, the width direction Y of the housing 40 coincides with the height direction of the cabinet 2, while the height direction Z of the housing 40 coincides with the width direction of the cabinet 2. Placing the circuit breakers 4 within the cabinet 2 in this manner allows for the maximum possible accommodation of circuit breakers 4 in the width direction of the cabinet 2. Moreover, 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 member 5 for linkage with the trigger assembly 12 needs to be provided at a position corresponding to the side wall 45 of the housing 40 in the axial extension direction Y of the trip rod 11, that is, provided at a position corresponding to the side wall 45 of the housing 40 in the width direction Y of the housing 40. The arrangement direction of the multiple circuit breakers 4 in the cabinet 2 is consistent with the height direction Z of the housing 40. Therefore, in the height direction Z of the housing 40, that is, in the width direction of the cabinet 2, it is possible to avoid providing the external structural member 5. That is, 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 member 5, thereby effectively reducing 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, since the trigger assembly 12 will be linked with the external structural member 5 during the plugging and unplugging process of the circuit breaker 4 with the connecting plug 7, the rotation of the trip rod triggers the operating mechanism to trip and unlock, which can drive the circuit breaker 4 to open, thereby ensuring the safety of the circuit breaker 4 during the hot plugging process.

[0092] Specifically, multiple circuit breakers 4 are installed in the plug-in frame 6, and after the circuit breaker 4 is installed in the plug-in frame 6, the axial extension direction Y of the trip rod 11 is consistent with the height direction of the plug-in frame 6, that is, the width direction Y of the shell 40 is consistent with the height direction of the plug-in frame 6. The plug-in frame 6 is arranged in the area of the cabinet 2 where the circuit breaker 4 needs to be placed, and the multiple external structural members 5 that cooperate with the multiple circuit breakers 4 are arranged on the top wall 6a or bottom wall 6b of the plug-in frame 6 in the height direction of the cabinet 2. The trigger assembly 12 for linkage with the external structural member 5 is located on the side wall 45 in the width direction Y of the shell 40. Therefore, when the circuit breaker 4 is inserted into or pulled out of the plug-in frame 6, the external structural member 5 will act on the part of the trigger assembly 12 located outside the side wall 45, thereby The trigger assembly 12 acts on the trip rod 11, causing the trip rod 11 to rotate around the axial extension direction of the trip rod 11. The trip rod 11 rotates around the axial extension direction of the trip rod 11. The rotation of the trip rod 11 triggers the operating mechanism 20 to trip and unlock, which can drive the moving contact 21 in the operating mechanism 20 to move, thereby driving the moving contact 21 to contact with or separate from the static contact 22, so as to close or open the circuit breaker 4, thereby ensuring the safety of the circuit breaker 4 during the hot plugging process.

[0093] In some embodiments, the dimension of the insertion 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, so as to avoid wasting space in the height direction of the cabinet 2 .

[0094] Figure 7 for Figure 5 A schematic diagram of the assembly of the tripping rod 11 and a partial structure of the operating mechanism 20 in the circuit breaker 4 in the embodiment.

[0095] Reference Figure 5-Figure 7 In some embodiments, the operating mechanism 20 includes a rotating shaft 25, and the movable contact 21 is disposed on the rotating shaft 25. The rotation of the rotating shaft 25 can drive the movable contact 21 to rotate about the central axis of the rotating shaft 25, thereby achieving contact or separation between the movable contact 21 and the static contact 22. Specifically, the trip rod 11 rotates about the axial extension direction of the trip rod 11, driving the transmission assembly 24 to move, and 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 figure is only a schematic diagram, and is only used to illustrate the transmission between the trip rod 11 and the rotating shaft 25 through the transmission assembly 24, so as to interact with each other. The specific structure of the transmission assembly 24 of the present application can be varied, as long as it can achieve the rotation of the rotating shaft 25 when the trip rod 11 is rotated.

[0096] Reference Figure 7In some embodiments, the axial extension direction Y of the trip rod 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 rod 11 is arranged parallel to the central axis of the rotating shaft 25, the steering force of the trip rod 11 can be conveniently transmitted to the rotating shaft 25 via the transmission assembly 24. This can simplify the structure of the transmission assembly 24, reduce the system error of the transmission assembly 24, and improve the transmission accuracy, so that the circuit breaker 4 can be accurately opened or closed during the insertion and removal process, thereby improving the safety performance of the circuit breaker 4.

[0097] Reference Figure 5-Figure 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 assembly 24 to move, thereby driving the rotating shaft 25 to rotate, thereby achieving contact and separation between the moving contact 21 and the static contact 22, thereby closing or opening the circuit breaker 4. In this embodiment, the operating handle 23 can be manually rotated or pressed to achieve closing or opening of the circuit breaker 4, thereby improving the operability of the circuit breaker 4.

[0098] Reference Figure 3 、 Figure 5 and Figure 7 In some embodiments, the operating handle 23 is located on the front wall 42 of the housing 40 in the depth direction X. That is, a portion of the operating handle 23 is exposed outside the front wall 42 to facilitate user operation. Specifically, in the circuit breaker 4 of this embodiment, the trigger assembly 12 is located on the side wall 45 of the housing 40 in the width direction Y, the operating handle 23 is located on the front wall 42 of the housing 40, and the insertion and removal mechanism 30 is 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, and 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. Furthermore, because the trigger assembly 12 is located on the side wall 45 of the housing 40 in the width direction Y, 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, facilitating a compact design of the insertion frame 6 in the width direction.

[0099] Figure 8 for Figure 5 A schematic diagram of a portion of the structure of the circuit breaker 4 in the embodiment; Figure 9 for Figure 8 Schematic diagram of the exploded structure in the embodiment.

[0100] Reference Figure 5 、 Figure 8 and Figure 9In some embodiments, the trigger assembly 12 includes a cantilever link 121 and a first cantilever 122 and a second cantilever 123 provided at both ends of the cantilever link 121 in the axial extension direction Y.

[0101] The cantilever link 121 is rotatably mounted on the sidewall 45 of the housing 40 in the width direction Y. Specifically, the cantilever link 121 can rotate relative to the sidewall 45 about the axial extension direction of the cantilever link 121. It should be noted that the extension direction of the central axis of the cantilever link 121 is also the extension direction of the rotation axis of the cantilever link 121. The extension direction of the rotation axis of the cantilever link 121 is consistent with the axial extension direction Y of the cantilever link 121, and the axial extension direction Y of the cantilever link 121 is consistent with the longitudinal direction of the cantilever link 121. Specifically, the cantilever link 121 can be a cylindrical structure or a rod-like structure of other shapes.

[0102] The axial extension direction Y of the cantilever link 121 is consistent with the axial extension direction Y of the trip rod 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 is understandable that the central axis of the cantilever link 121 and the central axis of the trip rod 11 may coincide or may not coincide.

[0103] The first cantilever 122 is used to cooperate with the trip rod 11 to drive the trip rod 11 to rotate. Specifically, when the cantilever connecting rod 121 rotates relative to the side wall 45, the first cantilever 122 is driven to rotate around the axial extension direction of the cantilever connecting rod 121, and the first cantilever 122 rotates to drive the trip rod 11 to rotate.

[0104] Reference Figure 8 and Figure 9In some embodiments, the trip rod 11 is provided with a first linkage rod 15, whose extension direction is perpendicular to the axial extension direction Y of the trip rod 11. The first cantilever 122 is provided with a first roller 124, whose axial extension direction is consistent with the axial extension direction Y of the cantilever link 121. The first roller 124 overlaps 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 provided 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, and the first cantilever 122 is provided on the cantilever link 121, so that it can drive the first cantilever 122 to rotate around the axial extension direction of the cantilever link 121 through the cantilever link 121. The first roller 124 is also provided on the first cantilever 122, so that 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. Therefore, 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 trip and unlock, thereby driving the moving contact 21 and the static 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 rather indirectly rotated by the first linkage rod 15 and the first roller 124, there is no need to align the central axis of the trip rod 11 with the central axis of the cantilever link 121. In other words, the installation accuracy of the relative positions of the trip rod 11 and the cantilever link 121 does not require high standards, effectively reducing the manufacturing difficulty of the circuit breaker 4. Furthermore, since this embodiment indirectly rotates the trip rod 11 by the first linkage rod 15 and the first roller 124, it can prevent the trigger assembly 12 from accidentally triggering the trip rod 11 to rotate during vibration.

[0105] Reference Figure 3 、 Figure 5 、 Figure 8 and Figure 9 In some embodiments, the second cantilever 123 is located outside the side wall 45 and is used to interlock with the external structural member 5 to drive the cantilever connecting rod 121 to rotate. Since the second cantilever 123 is located outside the side wall 45, it can easily correspond to the position of the external structural member 5 located on the top wall 6a or bottom wall 6b of the subrack 6 and interlock with each other.

[0106] It can be understood that there is no specific restriction on the shapes of the first cantilever 122, the second cantilever 123, the first roller 124 and the first linkage rod 15. For example, they can be cylindrical structures or long strip structures of other shapes, 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.

[0107] Figure 10 It is a projection view in the width direction Y of the housing 40 when the circuit breaker 4 and the external structure 5 are matched.

[0108] In order to facilitate the linkage between the second cantilever 123 and the external structural member 5, refer to Figure 3 、 Figures 8-10 In some embodiments, the trigger assembly 12 further includes a second roller 125 provided 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 inserting and removing the circuit breaker 4 from the insertion frame 6, the external structure 5 will act on the second roller 125, driving the second roller 125 to rotate around the axial extension direction of the cantilever link 121, and then transmit the rotation to the cantilever link 121 through the second cantilever 123, causing the cantilever link 121 to rotate, thereby driving the trip rod 11 to rotate. The rotation of the trip rod 11 triggers the operating mechanism 20 to trip and unlock, thereby realizing the opening of the circuit breaker 4.

[0109] Reference Figure 8 and Figure 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, thereby avoiding the distance between the external structural member 5 and the side wall 45 of the shell 40 being too small, thereby affecting the normal insertion and removal of the circuit breaker 4, and can also effectively reduce the size of the second cantilever 123 in the width direction Y of the shell 40 to reduce costs.

[0110] Specifically, refer to Figure 3 、 Figures 8-10In some embodiments, the external structural member 5 includes a first stopper 51, which includes a push-in lifting surface 511, a release surface 512, and a removal lifting surface 513. In the height direction Z of the housing 40, the distance between the release surface 512 and the central axis of the cantilever link 121 is L1, the distance between the removal 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, the cantilever can be ensured to contact and interact with the push-in lifting surface 511, the release surface 512, and the removal lifting surface 513 during insertion and removal of the circuit breaker 4 from the insertion frame 6. Since L1≤L2, when the circuit breaker 4 is inserted into the insertion frame 6, that is, when the connecting plug 7 is inserted into the plug-in 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 link 121, and move the second roller 125 to the tripping surface 512. When at 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 static contact 22, so that the circuit breaker 4 is opened, thereby preventing electrical sparks from occurring during the insertion of the connecting plug 7 into the plug-in structure, avoiding the generation of 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 insertion frame 6, that is, when the connecting plug 7 is pulled out of the plug-in structure, 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 link 121, and move the second roller 125 to the tripping surface 512. When at the tripping surface 512, the rotation of the tripping rod 11 triggers the operating mechanism 20 to trip and unlock, and the tripping rod 11 separates the moving contact 21 and the static contact 22, so that the circuit breaker 4 is opened, thereby preventing electrical sparks from occurring during the process of pulling the connecting plug 7 out of the plug-in structure, avoiding the generation of arcs, and ensuring the safety of the circuit breaker 4 when it is pulled out.

[0111] 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 planes. 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.

[0112] In order to ensure that the second roller 125 can effectively interact with the first stop 51 during the plugging and unplugging process 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 plugging and unplugging process.

[0113] In order to limit the rotation angle of the second cantilever 123 around the central axis of the cantilever link 121 to a specified range, refer to Figure 5-Figure 9 In some embodiments, the trigger assembly 12 further includes a fourth cantilever 126 provided on the cantilever link 121, and the extension direction of the fourth cantilever 126 is perpendicular to the axial extension direction Y of the cantilever link 121. This embodiment limits the rotation angle of the cantilever link 121 by limiting the rotation angle of the fourth cantilever 126, thereby limiting the rotation angle of the second cantilever 123.

[0114] Specifically, the trigger assembly 12 further includes a stopper 1301, which is fixed to the housing 40 and is located along the rotation path of the fourth cantilever 126. Because the stopper 1301 is located along the rotation path of the fourth cantilever 126, after the fourth cantilever 126 rotates a certain angle about the axial extension direction of the cantilever link 121, it is blocked by the stopper 1301, thereby restricting further rotation of the fourth cantilever 126 and, in turn, restricting further rotation of the second cantilever 123. It is understood that the stoppers 1301 can be located on either side of the rotation direction of the fourth cantilever 126, so as to restrict the fourth cantilever 126 from rotating between the stoppers 1301 on either side of the fourth cantilever 126.

[0115] In addition, the trigger assembly 12 also includes a third cantilever 127 disposed on the cantilever link 121. The third cantilever 127 extends perpendicularly to the axial extension direction Y of the cantilever link 121. A recess 46 is provided within the housing 40. The trigger assembly 12 also includes a return spring 128 disposed within the recess 46. The return spring 128 overlaps the third cantilever 127 and the return spring 128 in the depth direction of the recess 46. It will be appreciated that the return spring 128 is in a compressed state so that it can apply an elastic 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 recess 46, the return spring 128 can drive the third cantilever 127 to rotate in its natural state. For example, in the accompanying drawings, the return spring 128 drives the third cantilever 127 to rotate clockwise. Of course, under the restraining action of the stopper 1301, the return spring 128 cannot cause the third cantilever 127 to rotate continuously clockwise. For example, when the fourth cantilever 126 is blocked by the stopper 1301, the third cantilever 127 can no longer be pushed clockwise by the return spring 128. In addition, due to the provision of the return spring 128, the second roller 125 can always maintain contact with the insertion lifting surface 511, the tripping surface 512, and the extraction lifting surface 513 during the insertion and extraction of the circuit breaker 4. This ensures that the insertion lifting surface 511, the tripping surface 512, and the extraction lifting surface 513 can always drive the second roller 125 to drive the second cantilever 123 to rotate in real time during the insertion and extraction of the circuit breaker 4, thereby ensuring the operation accuracy. Under the action of the limit member 1301, when the circuit breaker 4 is completely pulled out from the insertion frame 6, the limit member 1301 can also limit the fourth cantilever 126 to a specified position, and then limit the second cantilever 123 to a specified position, so as to ensure the linkage between the second roller 125 and the first stop block 51 when the insertion frame 6 is inserted next time.

[0116] 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 link 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 link 121, and improve the transmission accuracy. For example, the accuracy of the rotation of the second cantilever 123 to drive the rotation of the cantilever link 121 is improved, and for example, the accuracy of the rotation of the cantilever link 121 to drive the third cantilever 127 and the fourth cantilever 126 is improved, or the accuracy of the rotation of the cantilever link 121 to drive the first cantilever 122 is improved, so as to improve the accuracy of the rotation of the moving contact 21 around the rotating shaft 25, so as to improve the safety performance of the circuit breaker 4 in this embodiment during the hot plugging process.

[0117] In order to prevent the cantilever link 121 and the side wall 45 from moving relative to each other in the axial extension direction Y of the tripping rod 11, Figure 6 and Figure 9 In some embodiments, a snap ring 1216 is provided on the cantilever link 121, and a notch 4501 is provided on the side wall 45. The cantilever link 121 is disposed within the notch 4501. A groove (not shown) adapted for the snap ring 1216 is provided on the inner wall of the notch 4501. The snap ring 1216 is positioned within the groove, and the groove and the snap ring 1216 restrict relative movement between the cantilever link 121 and the side wall 45 in the axial extension direction Y of the tripping rod 11. Specifically, after the cantilever link 121 is disposed in the notch 4501, the tripping mechanism 10 further includes a fixing seat 130 for fixing the cantilever link 121 to the notch 4501 of the side wall 45. The limiting member 1301 is disposed on the fixing seat 130. It is understood that the fixing seat 130 also has a groove for limiting the position of the snap ring 1216.

[0118] Figure 11 Another structural schematic diagram of the cantilever connecting rod 121 provided in an embodiment of the present application.

[0119] Reference Figure 11 The cantilever connecting rod 121 includes a first rod 121a and a second rod 121b arranged along its axial extension direction. A limiting groove 1211 is provided on the first rod 121a, and a limiting protrusion 1212 adapted to the limiting groove 1211 is provided on the end of the second rod 121b facing the first rod 121a. For example, the limiting groove 1211 is a square groove, and the limiting protrusion 1212 is a square structure adapted to the square groove. The first rod 121a is provided with a threaded hole 1213, and the second rod 121b is provided with a fixing hole 1214 passing through the axial extension direction. The bolt 1215 passes through the fixing hole 1214 and is fixed to the threaded hole 1213, thereby fixing the first rod 121a and the second rod 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 aforementioned fixing seat 130 (such as Figure 6 ) and the notch 4501 mentioned above is opened in the side wall 45 (such as Figure 6 ), it is only necessary to open a through hole in the side wall 45 to facilitate the installation of the cantilever connecting rod 121 on the side wall 45.

[0120] In some embodiments, the second rod 121 b is rotatably disposed on the side wall 45 , and the second cantilever 123 is disposed on one end of the second rod 121 b located outside the side wall 45 .

[0121] In order to improve the visibility of the closing or opening status of the circuit breaker 4 during hot plugging, refer to Figure 4 、 Figure 5 as well as Figure 8 and Figure 9In some embodiments, the circuit breaker 4 further includes an indicator mechanism 60, which is used to display in real time the closing or opening status of the circuit breaker 4 during the plugging and unplugging process. The front wall 42 of the housing 40 is provided with an observation window 421, and the status displayed by the indicator mechanism 60 can be observed through the observation window 421 of the front wall 42.

[0122] Reference Figure 4 、 Figure 5 as well as Figure 8 and Figure 9 In some embodiments, the indicating mechanism 60 includes an indicating rod 61, and a first indicating surface 611 and a second indicating surface 612 are provided at the end of the indicating rod 61. The indicating rod 61 is linked with the tripping rod 11 or the cantilever connecting rod 121 so that the indicating rod 61 rotates. When the tripping rod 11 drives the moving contact 21 and the static contact 22 to separate, the indicating rod 61 rotates until the first indicating surface 611 is opposite to the observation window 421, indicating an open state. When the tripping rod 11 drives the moving contact 21 and the static contact 22 to contact, the indicating rod 61 rotates until the second indicating surface 612 is opposite to the observation window 421, indicating a closed state.

[0123] In order to improve the accuracy of the indication of the indicating mechanism 60, refer to Figure 4 、 Figure 5 as well as Figure 8 and Figure 9 In some embodiments, the indicating mechanism 60 further includes a fixing seat 62, a rotating shaft 63 fixed on the fixing seat 62, and a torsion spring 64 sleeved on the rotating shaft 63. The fixing seat 62 is fixed to the housing 40, and the indicating rod 61 is sleeved on the rotating shaft 63, so that the indicating rod 61 can rotate around the central axis of the rotating shaft 63. One end of the torsion spring 64 is connected to the fixing seat 62, and the other end of the torsion spring 64 is connected to the indicating rod 61. The torsion spring 64 can apply a torque to the indicating rod 61 to drive the indicating rod 61 to rotate around the rotating shaft 63 until the second indicating surface 612 is opposite to the observation window 421. That is, when the circuit breaker 4 is completely connected to the connecting plug 7 or completely separated from the connecting plug 7, the torsion spring 64 can drive the indicating rod 61 to rotate until the second indicating surface 612 is opposite to the observation window 421.

[0124] In order to enable the indicator rod 61 to rotate from the second indicator surface 612 facing the observation window 421 to the first indicator surface 611 facing the observation window 421 during the plugging and unplugging process of the circuit breaker 4, Figure 4 、 Figure 5 as well as Figure 8 and Figure 9In 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 link 121. The axial direction of the rotating shaft 63 is consistent with the axial direction of the cantilever link 121. The third roller 129 coincides with one end of the indicator rod 61 in the radial direction of the third roller 129. That is, one end of the indicator rod 61 is located on the path of the third roller 129 rotating around the axial extension direction of the cantilever link 121, and then the third roller 129 rotates around the cantilever link 121. When the arm link 121 rotates in its axial extension direction, it can drive the indicator rod 61 to rotate about the rotating shaft 63, thereby driving the indicator rod 61 to rotate from the second indicating surface 612 facing the observation window 421 to the first indicating surface 611 facing the observation window 421. When the third roller 129 does not apply a force to the indicator rod 61, for example, when the circuit breaker 4 is fully connected to or completely disconnected from the connecting plug 7, the torsion spring 64 can drive the indicator rod 61 to rotate until the second indicating surface 612 faces the observation window 421. In this embodiment, because the indicator rod 61 and the cantilever link 121 are not directly fixed, but are indirectly linked by the third roller 129 and one end of the indicator rod 61, the indicator rod 61 can be effectively prevented from reversely driving the cantilever link 121 to rotate during vibration, thereby reducing the risk of the trigger assembly 12 accidentally triggering the trip lever 11.

[0125] In addition, in this embodiment, the rotation of the cantilever link 121 can simultaneously drive the trip rod 11 and the indicator rod 61 to rotate, thereby improving the consistency of the actions of the trip rod 11 and the indicator rod 61, and further improving the accuracy of the indicator mechanism 60 in indicating closing or opening.

[0126] Reference Figure 5 and Figure 9 In some embodiments, since the axial extension direction of the rotating shaft 63 is consistent with the axial extension direction Y of the cantilever link 121, and the end of the indicator rod 61 having the first indicating surface 611 and the second indicating surface 612 is facing the front wall 42, the arrangement direction of the first indicating surface 611 and the second indicating surface 612 is consistent with the height direction Z of the shell 40.

[0127] In order to avoid excessive rotation of the indicator rod 61, refer to Figure 5 and Figure 9 In some embodiments, the fixing seat 62 is provided with a limiting hole 621, and the indicator rod 61 passes through the limiting hole 621. The size of the limiting hole 621 is larger than the size of the portion of the indicator rod 61 located in the limiting hole 621. The limiting hole 621 can limit the rotation transition of the indicator rod 61 to avoid the torsion spring 64 or the third roller 129 from being unable to effectively act on the indicator rod 61.

[0128] Figure 5 Schematic diagram of the second roller 125 of the circuit breaker 4 in this embodiment in contact with the extraction lifting surface 513; Figure 12 Schematic diagram of the second roller 125 of the circuit breaker 4 in this embodiment in contact with the tripping surface 512; Figure 13 FIG. 5 is a schematic diagram of the second roller 125 of the circuit breaker 4 in this embodiment in contact with the push-in lifting surface 511 .

[0129] The following combination Figure 5-Figure 13 , illustrating the working process of the tripping mechanism 10 of the circuit breaker 4 during the plugging and unplugging process.

[0130] When the plug-in structure of the circuit breaker 4 is connected to the connecting plug 7 (such as Figure 4 ) During the plug-in process, the second roller 125 is pressed against the push-in lifting surface 511 under the action of the reset spring 128, and gradually moves on the tripping surface 512 along with the push-in lifting surface 511. 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, and then simultaneously drives the trip rod 11 to rotate around its axial extension direction and the indicator rod 61 to rotate around the rotating shaft 63, so that the trip rod 11 drives the moving contact 21 and the static contact 22 to separate, and the indicator rod 61 rotates until the first indicating surface 611 is opposite to the observation window 421. At this time, the circuit breaker 4 is open, and the indicating mechanism 60 indicates the open state. As the circuit breaker 4 continues to be inserted, the second roller 125 moves from the tripping surface 512 to the extraction lifting surface 513. At this time, under the action of the reset spring 128, the third cantilever 127 drives the cantilever link 121 to rotate counterclockwise. After the rotation, the cantilever link 121 no longer applies force to the tripping rod 11. The moving contact 21 and the static contact 22 contact again under the action of the automatic reset device in the operating mechanism 20, closing the circuit breaker 4. At the same time, under the action of the torsion spring 64, the indicator rod 61 rotates until the second indicator surface 612 is aligned with the observation window 421, indicating that the circuit breaker 4 is closed.

[0131] During the process of unplugging the plug-in structure of the circuit breaker 4 and the connecting plug 7, the second roller 125 presses against the unplugging lifting surface 513 and gradually moves to the tripping surface 512 along with the unplugging lifting surface 513. During this process, the unplugging 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, thereby simultaneously driving the trip rod 11 to rotate around its axial extension direction and the indicator rod 61 to rotate around the rotating shaft 63, thereby causing the trip rod 11 to drive the moving contact 21 and the static contact 22 to separate, and the indicator rod 61 rotates until the first indicating surface 611 is opposite to the observation window 421. At this time, the circuit breaker 4 is opened, and the indicating mechanism 60 indicates the open state. As the circuit breaker 4 continues to be withdrawn, 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 reset spring 128, the third cantilever 127 drives the cantilever link 121 to rotate counterclockwise. After the rotation, the cantilever link 121 no longer applies force to the tripping rod 11. The moving contact 21 and the static contact 22 contact again under the action of the automatic reset device in the operating mechanism 20, closing the circuit breaker 4. At the same time, under the action of the torsion spring 64, the indicator rod 61 rotates until the second indicator surface 612 is aligned with the observation window 421, indicating that the circuit breaker 4 is closed.

[0132] After the circuit breaker 4 is further pulled out, the circuit breaker 4 will be completely separated from the connecting plug 7.

[0133] Figure 14 A schematic structural diagram of another circuit breaker 4 provided in an embodiment of the present application; Figure 15 for Figure 14 A schematic diagram of a portion of the structure of the circuit breaker 4 in the embodiment; Figure 16 for Figure 15 Schematic diagram of the exploded structure in the embodiment. Figure 14 The circuit breaker 4 in the embodiment and Figure 5 The main difference between the circuit breaker 4 in the embodiment is the difference in the trigger component 12. In order to avoid redundant description, this embodiment only introduces the circuit breaker 4 in the embodiment. Figure 5-Figure 13 The distinguishing feature of the circuit breaker 4 in the embodiment is that Figure 5-Figure 13 The same features in the embodiments can be referred to Figure 5-Figure 13 , I will not go into details here.

[0134] Reference Figure 14-16In some embodiments, the trigger assembly 12 includes a second cantilever 123 and a cantilever link 121. The cantilever link 121 is rotatably arranged on the side wall 45. The cantilever link 121 and the tripping rod 11 are coaxially arranged. One end of the cantilever link 121 extends into the housing 40 and is fixed to one end of the tripping rod 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 to drive the cantilever link 121 to rotate. Among them, the second cantilever 123 and the external structural member 5 are coaxial. Figure 5-Figure 13 The second cantilever 123 in the embodiment is the same as the external structure 5, and the second cantilever 123 is linked to the first stopper 51 included in the external structure 5 through the second roller 125. Figure 5-Figure 13 The embodiments will not be described in detail here.

[0135] In this embodiment, because the cantilever link 121 and the trip rod 11 are coaxially arranged and directly fixed together, direct transmission is possible. This improves the transmission accuracy of the cantilever link 121 and the trip rod 11, thereby improving the safety performance of the circuit breaker 4 during hot plugging. Moreover, the trigger assembly 12 in this embodiment has a simple structure, high stability, and low material cost.

[0136] In some embodiments, the cantilever link 121 is provided with a fixing hole 1210 , and the tripping rod 11 is passed through the fixing hole 1210 to achieve fixation between the cantilever link 121 and the tripping rod 11 .

[0137] It is understandable that the trigger component 12 in this embodiment may not be provided with a similar Figure 9 The reset spring 128 in the embodiment directly utilizes the reset device in the operating mechanism 20 or the torsion spring provided on the tripping rod to achieve reset and drive the tripping rod 11 to reset.

[0138] Figure 14 Schematic diagram of the second roller 125 of the circuit breaker 4 in this embodiment in contact with the extraction lifting surface 513; Figure 17 Schematic diagram of the second roller 125 of the circuit breaker 4 in this embodiment in contact with the tripping surface 512; Figure 18 FIG. 5 is a schematic diagram of the second roller 125 of the circuit breaker 4 in this embodiment in contact with the push-in lifting surface 511 .

[0139] The following combination Figures 14-18 , illustrating the working process of the tripping mechanism 10 of the circuit breaker 4 during the plugging and unplugging process.

[0140] When the plug-in structure of the circuit breaker 4 is connected to the connecting plug 7 (such as Figure 4) During the plugging process, the second roller 125 gradually moves on the tripping surface 512 along with the push-in lifting surface 511 under the action of the push-in lifting surface 511. 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 tripping rod 11 to rotate counterclockwise, thereby driving the tripping rod 11 to rotate around its axial extension direction and the indicator rod 61 to rotate around the rotating shaft 63, thereby causing the tripping rod 11 to drive the moving contact 21 (such as Figure 7 ) and static contact 22 (such as Figure 7 As the circuit breaker 4 continues to be inserted, the moving contact 21 and the static contact 22 come into contact again under the action of the automatic reset device in the operating mechanism 20, driving the trip rod 11 to rotate clockwise and reset. The cantilever link 121 drives the second roller 125 to move from the tripping surface 512 to the extraction lifting surface 513.

[0141] During the process of removing the plug-in structure of the circuit breaker 4 from the connecting plug 7, the second roller 125 gradually moves along the extraction lifting surface 513 to the tripping surface 512 under the action of the extraction lifting surface 513. During this process, the extraction lifting surface 513 drives the second roller 125 to rotate clockwise about the central axis of the cantilever link 121. The rotation of the cantilever link 121 drives the trip rod 11 to rotate counterclockwise, which in turn drives the trip rod 11 to rotate about its axial extension direction and the indicator rod 61 to rotate about the rotation axis 63, thereby causing the trip rod 11 to separate the movable contact 21 and the stationary contact 22. As the circuit breaker 4 continues to be removed, the movable contact 21 and the stationary contact 22 re-engage under the action of the automatic reset device within the operating mechanism 20, driving the trip rod 11 to rotate clockwise and reset. The cantilever link 121 drives the second roller 125 from the tripping surface 512 to the insertion lifting surface 511.

[0142] After the circuit breaker 4 is further pulled out, the circuit breaker 4 will be completely separated from the connecting plug 7.

[0143] Figure 19 A schematic structural diagram of another circuit breaker 4 provided in an embodiment of the present application; Figure 20 for Figure 19 A schematic diagram of a portion of the structure of the circuit breaker 4 in the embodiment; Figure 21 for Figure 20 Schematic diagram of the exploded structure in the embodiment. Figure 19 The circuit breaker 4 in the embodiment and Figure 5 The main difference between the circuit breaker 4 in the embodiment is the difference in the trigger component 12. In order to avoid redundant description, this embodiment only introduces the circuit breaker 4 in the embodiment. Figure 5-Figure 13 The distinguishing feature of the circuit breaker 4 in the embodiment is that Figure 5-Figure 13 The same features in the embodiments can be referred to Figure 5-Figure 13 , I will not go into details here.

[0144] Reference Figures 19-21 In some embodiments, the trigger assembly 12 includes a button 131, which is provided on the side wall 45. The button 131 is movable relative to the side wall 45 in the axial extension direction Y of the trip rod 11. In this embodiment, the button 131 is moved along the axial extension direction Y of the trip rod 11 to drive the trip rod 11 to rotate. The rotation of the trip rod 11 triggers the operating mechanism 20 to trip and unlock, thereby driving the moving contact 21 (such as Figure 7 ) and static contact 22 (such as Figure 7 ) contact or separation to achieve closing or opening of the circuit breaker 4.

[0145] Reference Figures 19-21 In some embodiments, the button 131 includes a first pushing surface 1311 located within the housing 40. The trip mechanism 10 further includes a first linkage rod 15 disposed on the trip rod 11. The first linkage rod 15 extends perpendicularly to the axial extension direction Y of the trip rod 11, and the first pushing surface 1311 and the first linkage rod 15 are aligned in the axial extension direction Y of the trip rod 11. In this embodiment, when the button 131 moves toward the trip 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 about the axial extension direction of the trip rod 11. Because the first linkage rod 15 is disposed on the trip rod 11, it can drive the trip rod 11 to rotate. The rotation of the trip rod 11 triggers the tripping and unlocking of the operating mechanism 20, thereby driving the movable contact 21 and the stationary contact 22 into contact or separation, thereby closing or opening the circuit breaker 4.

[0146] Specifically, in some embodiments, the first pushing surface 1311 is a plane, and a plane perpendicular to the axial extension direction Y of the trip rod 11 is set as a reference plane. Then, the first pushing surface 1311 is arranged at an angle to the reference plane. Of course, in other embodiments, the first pushing surface 1311 can also be a curved surface.

[0147] In order to facilitate linkage with external structural member 5, refer to Figures 19-21 In some embodiments, the button 131 further includes a second pushing surface 1312 located on the outside of the shell 40, and 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 rod 11; the second pushing surface 1312 is used to cooperate with the external structural component 5 to drive the button 131 to move along the axial extension direction Y of the trip rod 11.

[0148] In this embodiment, since the trip rod 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 trigger assembly 12 from accidentally triggering the trip rod 11 to rotate during vibration.

[0149] Figure 22 for Figure 14 A schematic diagram of a projection of a portion of the structure of the circuit breaker 4 in the embodiment in the width direction Y of the housing 40 .

[0150] Reference Figures 19-22 In some embodiments, the external structural member 5 includes a second stopper 52 for interacting with the second pushing surface 1312. The second stopper 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 trip rod 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 trip rod 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 trip rod 11 is L9, wherein L8<L9.

[0151] In this embodiment, since L8 < L9, when the button 131 is pushed into the lifting surface 521 or pulled out of the lifting surface 523 and pressed toward the tripping rod 11, when the button 131 moves to the tripping surface 522, the first pushing surface 1311 of the button 131 will inevitably drive the first linkage rod 15 to rotate a certain angle to realize the rotation of the tripping rod 11. Moreover, since L5 ≤ L6, when the circuit breaker 4 is pushed into the insertion frame 6 (such as Figure 3 ), the second pushing surface 1312 gradually moves to the tripping surface 522 under the action of the pushing lifting surface 521. During this process, the pushing lifting surface 521 can push the button 131 toward the tripping rod 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 pulling lifting surface 523. During this process, the pulling lifting surface 523 can push the button 131 toward the tripping rod 11, thereby driving the first linkage rod 15 to rotate. When the button 131 moves to the position of the tripping surface 522, the rotation of the tripping rod 11 triggers the operating mechanism 20 to trip and unlock, and the moving contact 21 (such as Figure 7 ) and static contact 22 (such as Figure 7 ) is separated, at this time the circuit breaker 4 is in the off state, thereby preventing electrical sparks from occurring during the plugging and unplugging process of the connecting plug 7 and the plug-in structure, avoiding the generation of arcs, and ensuring the safety of the circuit breaker 4 when it is pulled out.

[0152] 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 planes. 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.

[0153] Reference 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 coincides with the axial extension direction Y of the trip rod 11. A guide hole 1322 is defined in 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, the provision of the guide groove 1321 and the guide hole 1322 allows the button 131 to move precisely along a predetermined path, thereby improving the precision of the fit between the button 131 and the trip rod 11 and enhancing the safety of the circuit breaker 4 during hot swapping.

[0154] In order to prevent the button 131 from falling out of the outer frame 132 in the axial direction of the tripping rod 11, Figures 19-21 In some embodiments, the button 131 further includes an undercut structure 1313 and a limiting stepped surface 1314. In the axial extension direction Y of the trip rod 11, the undercut structure 1313 and the limiting stepped surface 1314 are located on opposite sides of the bottom wall of the guide slot 1321. The dimensions of the undercut structure 1313 and the limiting stepped surface 1314 are both larger than the dimensions of the guide hole 1322. The portion of the button 131 located between the undercut structure 1313 and the limiting stepped surface 1314 is smaller than the dimensions of the guide slot 1321. In this embodiment, the provision of the undercut structure 1313 and the limiting stepped surface 1314 ensures that the dimensions of the undercut structure 1313 and the limiting stepped surface 1314 are both larger than the dimensions of the guide hole 1322, thereby preventing the button 131 from disengaging from the outer frame 132 and limiting the displacement distance of the button 131 in the axial extension direction Y of the trip rod 11. In addition, the design of the undercut structure 1313 facilitates the button 131 to pass through the guide hole 1322 , and also facilitates the button 131 to be separated from the guide hole 1322 from the undercut structure 1313 during maintenance, so as to detach the button 131 from the outer frame 132 .

[0155] In order to facilitate the circuit breaker 4 to reset the button 131 in time after the plugging and unplugging process, refer to Figures 19-21In some embodiments, a hollow area 1315 is provided in the middle portion of the button 131. In the axial extension direction Y of the trip rod 11, the hollow area 1315 is located between the first pushing surface 1311 and the second pushing surface 1312. The button 131 also includes a limiting shaft 1316 located in the hollow area 1315. The axial extension direction of the limiting shaft 1316 is consistent with the axial extension direction Y of the trip rod 11; the trigger assembly 12 also includes a reset spring 133, which is sleeved on the limiting shaft 1316 and located in the hollow area 1315. The reset spring 133 is located between the button 131 and the bottom wall of the 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 block 52, the reset spring 133 applies elastic force to the button 131, which can drive the button 131 to reset to a state partially facing the side wall 45, so that when the circuit breaker 4 is subsequently plugged in and out, it can interact with the pushing lifting surface 521, the tripping surface 522 and the pulling out lifting surface 523 on the second stop block 52.

[0156] In some embodiments, the outer frame 132 is further provided with a spring recess 1323 for accommodating the return spring 133 .

[0157] In order to improve the visibility of the closing or opening status of the circuit breaker 4 during hot plugging, refer to Figures 19-21 In some embodiments, the circuit breaker 4 further includes an indication mechanism 60 .

[0158] The indicator mechanism 60 includes an indicator rod 61, one end of which is disposed on the button 131. The indicator rod 61 faces the front wall 42 of the housing 40 in the depth direction X. The 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 trip 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 and the second indicator surface 612. In this embodiment, since the indicator rod 61 is disposed on the button 131, when the button 131 moves along the axial direction of the trip rod 11, the indicator rod 61 is also driven to move along the axial direction of the trip rod 11. Since the first indicator surface 611 and the second indicator surface 612 are arranged along the axial extension direction Y of the trip rod 11, when the button 131 moves to different positions, the first indicator surface 611 and the second indicator surface 612 are also shifted to different positions. Specifically, when the second pushing surface 1312 of the button 131 moves to the tripping surface 522, the tripping rod 11 rotates to separate the moving contact 21 from the static contact 22. At this time, the first indicating surface 611 is opposite to the observation window 421, indicating that the circuit breaker 4 is in the open state. When the second pushing surface 1312 of the button 131 moves to the push-in lifting surface 521 or the pull-out lifting surface 523, the tripping rod 11 rotates to separate the moving contact 21 (such as Figure 7) and the static contact 22 (such as Figure 7 ) contacts, at this time the second indicating surface 612 is opposite to the observation window 421, to indicate that the circuit breaker 4 is in the closed state.

[0159] Reference Figures 19-21 In some embodiments, the outer frame 132 is provided with a chute through which the indicator rod 61 extends to the observation window 421. The chute 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.

[0160] Figure 19 Schematic diagram of the second pushing surface 1312 of the circuit breaker 4 in this embodiment in contact with the extraction lifting surface 523; Figure 23 Schematic diagram of the second pushing surface 1312 of the circuit breaker 4 in this embodiment in contact with the tripping surface 522; Figure 24 1 is a schematic diagram of the second pushing surface 1312 of the circuit breaker 4 in this embodiment in contact with the pushing lifting surface 521 .

[0161] The following combination Figures 19-24 , illustrating the working process of the tripping mechanism 10 of the circuit breaker 4 during the plugging and unplugging process.

[0162] When the plug-in structure of the circuit breaker 4 is connected to the connecting plug 7 (such as Figure 4 ) During the plugging process, under the action of the reset spring 133, the second pushing surface 1312 presses against the pushing lifting surface 521 and gradually moves on the tripping surface 522 along with the pushing lifting surface 521. During this process, the pushing lifting surface 521 drives the button 131 to move toward the tripping rod 11 along the axial extension direction Y of the tripping rod 11, 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 (such as Figure 7 ) and static contact 22 (such as Figure 7) is separated. At the same time, the button 131 moves, driving the indicator rod 61 along the axial extension direction Y of the trip rod 11, and moves until the first indicator surface 611 is opposite the observation window 421. At this time, the circuit breaker 4 is open, and the indicator mechanism 60 indicates the open state. As the circuit breaker 4 continues to be inserted, the moving contact 21 and the static contact 22 contact each other again under the action of the automatic reset device in the operating mechanism 20. At the same time, under the action of the reset spring 133, the button 131 moves along the axial extension direction Y of the trip rod 11 in a direction away from the trip rod 11, so that the second pushing surface 1312 moves from the tripping surface 522 to the extraction lifting surface 523. Moreover, the indicator rod 61 moves along with the button 131 in a direction away from the trip rod 11, and moves until the second indicator surface 612 is opposite the observation window 421. At this time, the circuit breaker 4 is closed, and the indicator mechanism 60 indicates the closed state.

[0163] During the process of removing the plug-in structure of the circuit breaker 4 from the connecting plug 7, under the action of the reset spring 133, the second pushing surface 1312 presses against the extraction lifting surface 523 and gradually moves onto the tripping surface 522 along with the extraction lifting surface 523. During this process, the extraction lifting surface 523 drives the button 131 to move toward the tripping rod 11 along the axial extension direction Y of the tripping rod 11, 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 static contact 22 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 move until the first indicator surface 611 is opposite to the observation window 421. At this time, the circuit breaker 4 is tripped, and the indicating mechanism 60 indicates the tripped state. As the circuit breaker 4 continues to be withdrawn, the moving contact 21 and the static contact 22 come into contact again under the action of the automatic reset device in the operating mechanism 20. At the same time, under the action of the reset spring 133, the button 131 moves along the axial extension direction Y of the trip rod 11, away from the trip rod 11, so that the second pushing surface 1312 moves from the tripping surface 522 to the pushing lifting surface 521. Moreover, the indicator rod 61 moves in a direction away from the trip rod 11 along with the button 131, and moves until the second indicating surface 612 is aligned with the observation window 421. At this time, the circuit breaker 4 is closed, and the indicating mechanism 60 indicates the closed state.

[0164] Figure 25 This is a structural diagram of another circuit breaker 4 provided in an embodiment of the present application. Figure 25 The circuit breaker 4 in the embodiment includes not only Figure 5-Figure 14 The tripping mechanism 10 and Figures 19-24 The combination of the tripping mechanism 10 in the embodiment.

[0165] Reference Figure 25In some embodiments, based on Figure 5 The circuit breaker 4 in the embodiment further includes another tripping mechanism 10, which 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 of which is Figure 5 The tripping mechanism 10 in the embodiment, another tripping mechanism 10 is Figure 19 In the embodiment, the tripping mechanism 10 is set to the same Figure 5 The tripping mechanism 10 of the embodiment has the same structure as the first tripping mechanism. Figure 19 The tripping mechanism 10 with the same structure in the embodiment is the second tripping mechanism. The first tripping mechanism and the second tripping mechanism are located on both sides of the operating mechanism 20 in the extending direction of the tripping rod 11.

[0166] The trigger assembly 12 of the first tripping mechanism is disposed on the second side wall 452, and the trigger assembly 12 of the second tripping mechanism is disposed on the first side wall 451. Since the circuit breaker 4 in this embodiment is provided with two tripping mechanisms 10, redundant safety is achieved, ensuring the safety of hot-swapping the circuit breaker 4 even if a problem occurs in one of the tripping mechanisms 10.

[0167] In order to avoid redundant description, the first tripping mechanism can be referred to Figure 5-Figure 13 The tripping mechanism 10 in the embodiment will not be described in detail here. Figures 19-24 The tripping mechanism 10 in the embodiment will not be described in detail here.

[0168] Figure 26 This is a structural diagram of another circuit breaker 4 provided in an embodiment of the present application. Figure 26 The circuit breaker 4 in the embodiment includes not only Figures 14-18 The tripping mechanism 10 and Figures 19-24 The combination of the tripping mechanism 10 in the embodiment.

[0169] Reference Figure 25 In some embodiments, based on Figure 14 The circuit breaker 4 in the embodiment further includes another tripping mechanism 10, which 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 of which is Figure 14 The tripping mechanism 10 in the embodiment, another tripping mechanism 10 is Figure 19 In the embodiment, the tripping mechanism 10 is set to the same Figure 14 The tripping mechanism 10 of the embodiment has the same structure as the first tripping mechanism. Figure 19The tripping mechanism 10 with the same structure in the embodiment is the second tripping mechanism. The first tripping mechanism and the second tripping mechanism are located on both sides of the operating mechanism 20 in the extending direction of the tripping rod 11.

[0170] The trigger assembly 12 of the first tripping mechanism is disposed on the second side wall 452 , and the trigger assembly 12 of the second tripping mechanism is disposed on the first side wall 451 .

[0171] In order to avoid redundant description, the first tripping mechanism can be referred to Figures 14-18 The tripping mechanism 10 in the embodiment will not be described in detail here. Figures 19-24 The tripping mechanism 10 in the embodiment will not be described in detail here.

[0172] It is understandable that, in addition to the above solutions, the present application may also include circuit breakers 4 of other structures, such as Figure 14 Based on the circuit breaker 4 in the embodiment, the indicating mechanism 60 linked to the cantilever link 121 is removed and an indicating mechanism 70 is added. Figure 27 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 .

[0173] The trip rod 11 passes through the operating mechanism 20, and both ends extend out of the operating mechanism 20 on both sides of the axial direction of the trip rod 11. The indicating mechanism 70 includes an outer frame 132, a button 131 and an indicating rod 61. The indicating mechanism 70 and the trigger assembly 12 are located on both sides of the axial extension direction Y of the trip rod 11, that is, the trip rod 11 is located between the trigger assembly 12 and the indicating mechanism 70.

[0174] 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 rod 11. The bottom wall of the guide groove 1321 is provided with a guide hole 1322. 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 rod 11 drives the button 131 to move relative to the outer frame 132 along the axial extension direction Y of the trip rod 11; the indicator The structure 70 also includes an indicator rod 61 provided on the button 131, the indicator rod 61 faces the front wall 42 of the shell 40 in the depth direction X, and the end of the indicator rod 61 facing the front wall 42 is provided with a first indicating surface 611 and a second indicating surface 612, and the first indicating surface 611 and the second indicating surface 612 are arranged along the axial extension direction Y of the trip rod 11. An observation window 421 is provided at a position corresponding to the indicator rod 61 on the front wall 42, and the observation window 421 is used to observe the first indicating surface 611 or the second indicating surface 612. In this embodiment, after the trigger assembly 12 is linked with the external structural member 5, it drives the trip rod 11 to rotate. The rotation of the trip rod 11 triggers the operating mechanism 20 to trip and unlock. The rotation of the trip rod 11 drives the circuit breaker 4 to close or open. At the same time, the trip rod 11 drives the button 131 to move along the axial direction of the trip rod 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.

[0175] In some embodiments, the portion of the button 131 that passes through the guide hole 1322 is provided with a first pushing surface 1311, and the tripping mechanism 10 also includes a second linkage rod 16 provided on the other end of the tripping rod 11, and the extension direction of the second linkage rod 16 is perpendicular to the axial extension direction Y of the tripping rod 11, and the first pushing surface 1311 and the second linkage rod 16 are directly opposite in the axial extension direction Y of the tripping rod 11.

[0176] It should be noted that the outer frame 132, button 131 and indicator rod 61 in this embodiment can refer to Figure 14 The outer frame 132 , the button 131 and the indicator rod 61 in the embodiment will not be described in detail here.

[0177] It should be noted that Figure 5 、 Figure 6 、 Figure 8-Figure 27 The external structural member 5 shown in FIG. 4 is used to cooperate with the circuit breaker 4 and is not a part of the circuit breaker 4 .

[0178] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A plug-in circuit breaker used in a power cabinet, characterized in that: The circuit breaker includes a housing and a trip mechanism and an operating mechanism connected to the housing; The trip mechanism includes a trip rod and a trigger assembly, at least part of which is located outside the housing. The trigger assembly is used to drive the trip rod to rotate around the axial direction. The rotation of the trip rod is used to drive the moving contact and the static contact of the operating mechanism to contact or separate. Along the axial extension direction of the trip rod, the operating mechanism and the trigger assembly are distributed at opposite ends of the trip rod.

2. The pluggable circuit breaker according to claim 1, characterized in that: The operating mechanism includes a rotating shaft, the moving contact is arranged on the rotating shaft, the rotation of the trip rod 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 static contact; the axial extension direction of the trip rod 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 trip rod is consistent with the width direction of the shell, and the dimension of the shell in the width direction is greater than the dimension of the shell in the height direction; the operating mechanism includes an operating handle, which is located on the front wall of the shell 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 to 3, characterized in that: The trigger assembly includes a cantilever connecting rod and a first cantilever and a second cantilever provided at both ends of the cantilever connecting rod in an axial extension direction. The cantilever connecting rod is rotatably provided on a side wall of the housing in the axial extension direction of the trip rod. The axial extension direction of the cantilever connecting rod 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 connecting rod. The second cantilever is located outside the side wall and is used to cooperate with an external structural member to drive the cantilever connecting rod 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; A first roller is provided on the first cantilever, 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 trigger assembly further includes a third cantilever provided on the cantilever connecting rod, wherein the extension direction of the third cantilever is perpendicular to the axial extension direction of the cantilever connecting rod; A groove is provided in the housing, and the trigger assembly further includes a reset spring. The reset spring is provided in the groove. In the depth direction of the groove, the reset spring is located between the third cantilever and the bottom wall of the groove.

6. The pluggable circuit breaker according to claim 5, characterized in that: The trigger assembly further includes a fourth cantilever provided on the cantilever connecting rod, wherein an extension direction of the fourth cantilever is perpendicular to an axial extension direction of the cantilever connecting rod; The trigger assembly further includes a limiting member fixed to the housing, and the limiting member is located on the rotation path of the fourth cantilever.

7. The pluggable circuit breaker according to claim 4, characterized in that: The cantilever connecting rod includes a first rod and a second rod, the axial extension directions of the first rod and the second rod are consistent, a limiting groove is provided at one end of the first rod facing the second rod, a threaded hole is provided on the bottom wall of the limiting groove, a limiting protrusion is provided at one end of the second rod facing the first rod, the limiting protrusion is installed in the limiting groove, the second rod is also provided with a fixing hole that passes through the second rod along the axial extension direction of the second rod, and the trigger assembly also includes a bolt, which passes through the fixing hole and is connected to the threaded hole.

8. The pluggable circuit breaker according to claim 4, characterized in that: The trigger assembly further includes a second roller provided on the second cantilever, wherein the axial extension direction of the second roller is consistent with the axial extension direction of the cantilever connecting rod, and in the axial extension direction of the cantilever connecting rod, the cantilever connecting rod and the second roller are located on opposite sides of the second cantilever; The external structural member includes a first stopper, the first stopper including 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 connecting rod is L1, the distance between the pull-out lifting surface and the central axis of the cantilever connecting rod is L2, and the distance between the push-in lifting surface and the central axis of the cantilever connecting rod is L3, wherein L1≤L2, L1≤L3; The distance between the central axis of the second roller and the central axis of the cantilever link is L4, wherein L4>L1.

9. The pluggable circuit breaker according to claim 6, characterized in that: The circuit breaker further includes an indicating mechanism, which includes a fixing seat, a rotating shaft fixed on the fixing seat, and an indicating rod fixed on the rotating shaft; The fixing seat is fixed to the shell, the axial extension direction of the rotating shaft is consistent with the axial direction of the cantilever connecting rod, the fourth cantilever is provided with a third roller, the axial extension direction of the third roller is consistent with the axial extension direction of the cantilever connecting rod, the third roller coincides with one end of the indicator rod in the radial direction of the third roller, the other end of the indicator 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 shell, and an observation window is provided at a position corresponding to the indicator rod on the front wall in the depth direction of the shell, and the observation window is used to observe the first indicating surface or the second indicating 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 fixing seat, and the other end of the torsion spring is connected to the indicating rod. The fixing seat is provided with a limiting hole, and the indicating rod passes through the limiting hole. The size of the limiting hole is larger than the size of the part of the indicating rod located in the limiting hole.

11. The pluggable circuit breaker according to any one of claims 1 to 3, characterized in that: The trigger assembly includes a second cantilever and a cantilever connecting rod, the cantilever connecting rod is rotatably arranged on the side wall of the shell in the axial extension direction of the trip rod, the cantilever connecting rod and the trip rod are coaxially arranged, one end of the cantilever connecting rod extends into the shell and is fixed to one end of the trip rod, the other end of the cantilever connecting rod 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 connecting rod, and the second cantilever is used to link with an external structural member to drive the cantilever connecting rod to rotate.

12. The pluggable circuit breaker according to any one of claims 1 to 3, characterized in that: The trigger assembly includes a button, which is provided on a 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 rod; The trip mechanism also includes a first linkage rod provided on the trip rod, the extension direction of the first linkage rod is perpendicular to the axial extension direction of the trip rod, the first pushing surface and the first linkage rod are directly opposite to each other in the axial extension direction of the trip rod, and the second pushing surface is used to link with an external structural member to drive the button to move along the axial extension direction of the trip rod.

13. The pluggable circuit breaker according to claim 12, characterized in that: The trigger assembly also includes an outer frame, which is fixed to the shell. The outer frame includes a guide groove whose depth direction is consistent with the axial extension direction of the trip rod. The bottom wall of the guide groove is provided with a guide hole. 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 trip rod, the undercut structure and the limiting step surface are located on opposite sides of the bottom wall of the guide groove. The sizes of the undercut structure and the limiting step surface are both larger than the size of the guide hole, and the size of the part of the button located between the undercut structure and the limiting step surface is smaller than the size of the guide groove.

15. The pluggable circuit breaker according to claim 14, characterized in that: A hollow area is provided in the middle portion of the button. In the axial extension direction of the trip 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 trip rod. The trigger assembly further 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 member includes a second stopper for linkage with the second pushing surface, the second stopper includes a push-in lifting surface, a tripping surface, and a pull-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 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 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.

17. The pluggable circuit breaker according to claim 12, characterized in that: The circuit breaker further includes an indicator rod provided 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 are provided at one end of the indicator rod facing the front wall, the first indicator surface and the second indicator surface are arranged along the axial extension direction of the trip rod, and an observation window is provided at a position on the front wall corresponding to the indicator rod, the observation window being used for observing the first indicator surface and the second indicator surface.

18. The pluggable circuit breaker according to claim 11, characterized in that: The circuit breaker further includes an indicator mechanism, which is located at the other end of the trip rod in the axial extension direction, and includes 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 trip rod, the bottom wall of the guide groove is provided with a guide hole, the button is inserted into the guide groove and passes through the guide hole, and the button is movable relative to the outer frame in the depth direction of the guide groove; The trip rod rotates to drive the button to move relative to the outer frame along the axial extension direction of the trip rod; The indicating mechanism further includes an indicating rod provided on the button, the indicating rod facing the front wall in the depth direction of the shell, and 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 tripping rod, and an observation window is provided at a position corresponding to the indicating rod on the front wall, the observation window being 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 passing through the guide hole is provided with a first pushing surface, and the tripping mechanism further includes a second linkage rod provided 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 to 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 further includes another tripping mechanism, wherein the another tripping mechanism and the tripping mechanism are located on both sides of the operating mechanism in the axial extension direction of the tripping rod, and the another tripping mechanism includes another tripping rod and a button, wherein the button is movably arranged relative to the side wall in the axial extension direction of the tripping rod; The other tripping rod is connected to the operating mechanism, and the other tripping rod rotates around the axial extension direction of the other tripping rod to drive the moving contact and the static contact of the operating mechanism to contact or separate; The button includes a first push surface located inside the housing and a second push surface located outside the housing, the first push surface and the second push surface being located at opposite ends of the button in the axial extension direction of the other tripping rod; The trip mechanism also includes a first linkage rod provided on the other trip rod, the extension direction of the first linkage rod is perpendicular to the axial extension direction of the other trip rod, the first pushing surface and the first linkage rod are directly opposite to each other in the axial extension direction of the other trip rod, and the second pushing surface is used to link with an external structural member to drive the button to move along the axial extension direction of the other trip rod.

21. The pluggable circuit breaker according to claim 20, characterized in that: The circuit breaker further includes an indicator rod provided 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 are provided at one end of the indicator rod facing the front wall, the first indicator surface and the second indicator surface are arranged along the axial extension direction of the other trip rod, and an observation window is provided at a position corresponding to the indicator rod on the front wall, the observation window being used for observing the first indicator surface or the second indicator surface.

22. A power cabinet, characterized in that: The power supply cabinet includes a cabinet body, a plug-in frame, and a plurality of plug-in circuit breakers as described in any one of claims 1 to 21 above, wherein the plug-in frame is arranged in the cabinet body, and the plurality of plug-in circuit breakers are arranged in the plug-in frame along the width direction of the cabinet body, and the width direction of the plurality of plug-in circuit breakers is consistent with the height direction of the cabinet body, and the external structural member is arranged on the top wall or bottom wall of the plug-in 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 shell is smaller than the height dimension of the shell, and the depth direction of the shell is consistent with the depth direction of the cabinet.

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