CN219106035U - Multipole circuit breaker - Google Patents

Abstract

The utility model provides a multipole circuit breaker, includes two at least circuit breaker poles, and two adjacent circuit breaker poles set up side by side along first direction, and every circuit breaker pole includes operating device, and two adjacent operating devices are located the coplanar and are connected through the first driving medium linkage that sets up along first direction, at least in one of them circuit breaker pole in-package electric operating device, electric operating device is connected with the operating device drive of same circuit breaker pole, operating device includes operating component, electric operating device is connected with the operating component drive of same circuit breaker pole, and two adjacent operating components are connected through first driving medium linkage. According to the utility model, two adjacent breaker poles are transversely arranged side by side along the first direction, the operation components of the two adjacent operation mechanisms are connected through the first transmission piece arranged along the first direction, so that the linkage of switching on and switching off between the breaker poles is realized, and the multi-pole breaker has the advantages of simple structure and high matching degree, and is suitable for multi-pole breakers transversely arranged side by side.

Description

Multipole circuit breaker

Technical Field

The utility model relates to the field of piezoelectric devices, in particular to a multipole circuit breaker.

Background

A circuit breaker is a switching device capable of closing, carrying and breaking a current under normal circuit conditions and closing, carrying and breaking a current under abnormal circuit conditions for a prescribed time. In the existing multipole circuit breaker, two adjacent circuit breaker poles are longitudinally arranged in a stacking mode, switching-on linkage is achieved through cooperation of an operating handle and a polygonal shaft, and switching-off linkage is achieved through synchronous tripping of levers of an operating mechanism.

However, along with the diversity of the use environments of the circuit breakers, a multipole circuit breaker is derived, and two adjacent circuit breaker poles are required to be arranged side by side along the transverse direction, so that the closing linkage and the opening linkage of the existing longitudinal stacking arrangement structure are not applicable to the structure any more, and challenges are brought to the closing linkage and the opening linkage of the multipole circuit breaker.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art and provide the multipole circuit breaker which has simple structure, high reliability and good switching-on and switching-off linkage effect.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a multipole circuit breaker, includes two at least circuit breaker poles, and two adjacent circuit breaker poles set up side by side along first direction, and every circuit breaker pole includes operating device, and two adjacent operating devices are located the coplanar and are connected through the first driving medium linkage that sets up along first direction, at least in one of them circuit breaker pole in-package electric operating device, electric operating device is connected with the operating device drive of same circuit breaker pole, operating device includes operating component, electric operating device is connected with the operating component drive of same circuit breaker pole, and two adjacent operating components are connected through first driving medium linkage.

Further, the operation assembly comprises a handle gear, the electric operation mechanism comprises a motor and a rotating gear set driven by the motor, and the gear set is connected with the handle gear in a meshed mode.

Further, the operating assembly includes a drive gear, and the first drive member includes a meshing portion in meshing engagement with the drive gear to move the first drive member in a first direction.

Further, the transmission gear is a sector gear, the first transmission piece comprises a connecting rod and at least one section of rack connected to the connecting rod, the rack is used as a meshing part, and each meshing part is correspondingly meshed with one transmission gear.

Further, the operating mechanism further comprises a support member which is assembled in a rotating mode, the support member is connected with the operating assembly in a linkage mode through a connecting rod, and snap-fit jump buckles and lock catches are assembled on the support member in a rotating mode.

Further, the operation assembly comprises a handle gear, a rotating piece and a transmission gear which are coaxially assembled and are in linkage, the rotating piece is in linkage connection with the supporting piece through a connecting rod, the first transmission piece comprises a meshing part, the meshing part is in meshing connection with the transmission gear, the electric operation mechanism comprises a motor and a rotating gear set driven by the motor, and the gear set is in meshing connection with the handle gear.

Further, the circuit breaker pole comprises a shell, a sliding guide structure matched with the shell is arranged between the shell and the first transmission piece, and the sliding guide structure provides a guide function for the movement of the first transmission piece.

Further, the casing includes a pair of end walls, a pair of lateral wall and a pair of connecting wall, wherein a pair of lateral wall is connected between a pair of end walls, and a pair of lateral wall sets up relatively, a pair of connecting wall is respectively with a pair of end walls, a pair of lateral wall is connected and is encircled the casing that forms the cuboid, the line between a pair of lateral wall is first direction, the line between a pair of end walls is the second direction, the line between a pair of connecting wall is the third direction, first direction, second direction and third direction mutually perpendicular, a pair of wiring mouth has been seted up at the one end wall of casing, the cooperation is equipped with binding post in the wiring mouth, make the one end of circuit breaker utmost point form the wiring, operating device and electric operating device assemble in the connecting wall, the lateral wall of adjacent two casings is adjacent, first driving medium passes the lateral wall of casing perpendicularly.

Further, a pair of connecting terminals are arranged on two sides of the electric operating mechanism, and the first transmission piece is respectively overlapped with the electric operating mechanism and the connecting terminals in the third direction.

Further, an arc extinguishing system is arranged at one end of the breaker pole far away from the wiring terminal, a contact mechanism is arranged between the arc extinguishing system and the supporting piece, the contact mechanism comprises a moving contact and a fixed contact which are matched with each other, the moving contact is connected with the supporting piece in a linkage way, and the fixed contact is fixed at one side of the arc extinguishing system;

a short-circuit protection mechanism and an overload protection mechanism are arranged on the same side of the supporting piece, and a wiring terminal, the short-circuit protection mechanism, the overload protection mechanism and the static contact are sequentially arranged along the second direction.

According to the multipole circuit breaker, two adjacent circuit breaker poles are transversely arranged side by side along the first direction, the operation components of the two adjacent operation mechanisms are connected through the first transmission piece arranged along the first direction, so that the linkage of switching on and switching off between the circuit breaker poles is realized, and the multipole circuit breaker has the advantages of simple structure and high matching degree, and is suitable for the multipole circuit breaker transversely arranged side by side.

In addition, the operation assembly comprises a transmission gear and a handle gear, so that the first transmission part and the electric operation mechanism are respectively connected with the operation assembly in a linkage manner, the mutual interference between the electric operation mechanism and the first transmission part is avoided, and the operation stability is ensured.

In addition, the transmission gear is a sector gear, the meshing part is a section of rack, and the advantages of small size and high connection stability are achieved.

In addition, be equipped with slip guide structure between the casing of circuit breaker utmost point and the first driving medium, provide the guide effect for the slip of first driving medium, guarantee drive mechanism's motion stability.

Drawings

Fig. 1 is a schematic view of a structure of a multi-pole circuit breaker in the present utility model when opening a gate;

FIG. 2 is a schematic diagram showing the cooperation of the first transmission member and the transmission gear in the present utility model;

fig. 3 is a schematic diagram of a multipole circuit breaker according to the present utility model during closing;

fig. 4 is a schematic view of the structure of the breaker pole (including the electrical actuator) in the present utility model;

fig. 5 is a schematic structural view of the latch according to the present utility model.

Detailed Description

Embodiments of the multipole circuit breaker of the present utility model are further described below with reference to the examples given in connection with fig. 1-5. The multipole circuit breaker of the present utility model is not limited to the description of the following embodiments.

The multipole circuit breaker comprises at least two circuit breaker poles 1, wherein each circuit breaker pole 1 comprises a pair of wiring terminals 9, an operating mechanism 2, a contact system and an arc extinguishing system 5, the wiring terminals 9 are used for being connected with external conductive pieces, the contact mechanism comprises a moving contact 41 and a fixed contact 42 which are matched with each other, the moving contact 41 and the fixed contact 42 are respectively and electrically connected with the pair of wiring terminals 9, the fixed contact 42 is fixedly arranged, the moving contact 41 is connected with the operating mechanism 2 in a linkage way and is opposite to the fixed contact 42, the operating mechanism 2 drives the moving contact 41 to contact with or separate from the fixed contact 42, so that the switching-on and switching-off of the circuit breaker pole 1 are realized, the arc extinguishing system 5 is matched with one side of the contact mechanism, and an arc generated by the breaking of the contact mechanism is matched with the arc extinguishing system 5; furthermore, each breaker pole 1 may further be provided with a protection mechanism, where the protection mechanism is cooperatively disposed on one side of the operating mechanism 2, and the protection mechanism includes a short-circuit protection mechanism 6 and/or an overload protection mechanism 7, and when a short-circuit or overload fault occurs, the short-circuit protection mechanism 6 or the overload protection mechanism 7 triggers the operating mechanism 2 to trip, so as to implement short-circuit or overload protection.

In the multipole circuit breaker, the operating mechanism 2 and the moving contact 41 of two adjacent circuit breaker poles 1 are connected in a linkage way, so that synchronous opening and closing of each circuit breaker pole 1 in the circuit breaker are realized, at least one circuit breaker pole 1 is provided with an electric operating mechanism 3, the electric operating mechanism 3 is connected with the operating mechanism 2 of the same circuit breaker pole 1 in a linkage way, and after receiving an opening or closing command, the electric operating mechanism 3 drives the operating mechanism 2 of the same circuit breaker pole 1 to act, so that automatic opening and closing of the circuit breaker are realized, and a handle or a button connected with the operating mechanism 2 and serving as a manual operating member can be omitted, so that the operating convenience and safety of the circuit breaker are improved. Of course, as other embodiments, a handle or a button may be provided, and the operating mechanism may be driven by manually operating the handle or the button to realize opening and closing.

As shown in fig. 1 to 5, in this embodiment, at least two breaker poles 1 are arranged side by side along the first direction, that is, the width direction of the breaker poles 1 is the left-right direction in fig. 1, which may also be referred to as lateral side by side, at this time, the parts in the adjacent two breaker poles 1 are located on the same plane, that is, the operating mechanisms 2 of the adjacent two breaker poles 1 are assembled on the same plane, and similarly, the adjacent contact mechanisms, the arc extinguishing system and the protection system are all assembled on the same plane; the length direction of each breaker pole 1 is taken as a second direction, namely an up-down direction in fig. 1, and the thickness direction of each breaker pole 1 is taken as a third direction, namely a direction perpendicular to the paper surface in fig. 1, wherein the first direction, the second direction and the third direction are respectively perpendicular to each other.

The improvement point of the application is that the multipole circuit breaker comprises a transmission mechanism arranged along a first direction, and the transmission mechanism is connected between the operating mechanisms 2 of the adjacent two circuit breaker poles 1 along the first direction in a linkage way, so that the operating mechanisms 2 of the plurality of circuit breaker poles 1 realize synchronous actions.

The transmission mechanism comprises a first transmission member 81, the operating mechanism 2 comprises an operating component 21 assembled in a rotating way, the length direction of the first transmission member 81 is a first direction, the rotating axial direction of the operating component 21 is perpendicular to the first direction, and the first transmission member 81 is preferably connected in a linkage way.

As shown in fig. 1-5, the operating mechanism 2 of each circuit breaker pole 1 comprises an operating component 21 and a supporting member 22 which are assembled in a rotating way respectively, wherein the operating component 21 and the supporting member 22 are connected in a linkage way through a connecting rod 25, the operating component 21 comprises a rotating member and a transmission gear 211 which are assembled coaxially, the rotating member and the supporting member 22 are connected in a linkage way through the connecting rod 25, a jump button 24 and a lock catch 23 are assembled on the supporting member 22 in a rotating way, and one end of the jump button 24 is in snap fit with a first matching part 231 of the lock catch 23; the transmission mechanism comprises a first transmission member 81, wherein the first transmission member 81 is provided with a meshing part 812, the first transmission member 81 is in meshing connection with a transmission gear 211 through the meshing part 812, and the first transmission member 81 can move along a first direction, so that the operation mechanisms 2 of all the circuit breaker poles 1 are driven to realize synchronous opening and closing actions. The rotation axis of the rotation member, the transmission gear 211 and the support member 22 is in the third direction, and the length direction of the first transmission member 81, that is, the moving direction is in the first direction, and is perpendicular to the rotation axis of the rotation member, the transmission gear 211 and the support member 22.

In addition, an electric operating mechanism 3 and a control circuit board are arranged in one of the circuit breaker poles 1, the first transmission piece 81 is matched with the electric operating mechanism 3 and the control circuit board to complete automatic switching-on and switching-off, the electric operating mechanism 3 is at least connected with the operating mechanism 2 of one circuit breaker pole 1 in a linkage way, the control circuit board is provided with a controller for controlling the electric operating mechanism 3, and the controller outputs a control signal to enable the electric operating mechanism 3 to perform switching-on or switching-off actions; the circuit breaker is also internally provided with a sampling module, the sampling module feeds back the collected current, voltage and other data signals to the controller, after overload or short-circuit fault is judged, the controller outputs a control signal to enable the electric operating mechanism 3 to rotate in a switching-off mode, the electric operating mechanism 2 linked with the electric operating mechanism 3 rotates in a switching-off mode, other operating mechanisms 2 synchronously switch off under the linkage action of the first transmission piece 81, fault protection is achieved, and at the moment, the mechanical short-circuit protection mechanism 6 and/or the overload protection mechanism 7 in the embodiment of fig. 1 can not be arranged.

Referring to fig. 1 to 5, a specific structure of a breaker pole 1 is provided, as shown in fig. 1 to 5, the breaker pole 1 includes a housing, the housing includes a pair of end walls, a pair of side walls and a pair of connecting walls, wherein the pair of side walls are connected between the pair of end walls, and the pair of side walls are oppositely arranged, the pair of connecting walls are respectively connected with the pair of end walls and the pair of side walls to form a cuboid housing, a connecting line between the pair of side walls is in a first direction, a connecting line between the pair of end walls is in a second direction, a connecting line between the pair of connecting walls is in a third direction, and the first direction, the second direction and the third direction are mutually perpendicular. The side walls of the shells of the two adjacent circuit breakers 1 are adjacent, a pair of wiring ports are formed in the end wall of one end of the shell, wiring terminals 9 are matched and assembled in the wiring ports, one ends of the circuit breaker poles 1 form wiring terminals, and the direction from the wiring terminals to one ends of the circuit breaker poles 1 far away from the wiring terminals is a second direction. In this embodiment, the connection terminals 9 are in a plate-shaped structure, one end of the connection terminal 9 extends out of the housing, the other end extends along the inner edge of the side wall of the housing to the middle of the housing in the second direction, at this time, the connection direction between the pair of connection terminals 9 is the first direction, and of course, as other embodiments, the connection terminals 9 may also be connection terminals 9 with other structures, the connection terminals 9 include an inlet terminal and an outlet terminal, and the inlet terminal and the outlet terminal are disposed on the same side of the end arm, and of course, as other embodiments, the inlet terminal and the outlet terminal may also be disposed on different sides, and one end arm may be an inlet terminal, and the other end arm disposed opposite to the inlet terminal is an outlet terminal.

The operating mechanisms 2 are correspondingly arranged in the middle of the housing and correspondingly located between the pair of connecting terminals 9, in this embodiment, the operating mechanisms 2 are rotationally assembled on the connecting wall, the plane where the swing track of the moving contact 41 is located is parallel to the connecting wall, at this time, two adjacent operating mechanisms 2 are all assembled on the plane where the end wall is located, and the two adjacent operating mechanisms 2 are transversely arranged along the first direction, and the operating mechanisms 2 comprise operating assemblies 21 and supporting members 22 which are rotationally assembled respectively, wherein the operating assemblies 21 are located at positions close to the connecting terminals. The operation assembly 21 includes a handle gear 212, a rotating member and a transmission gear 211 which are coaxially assembled and linked, the rotation axis of the handle gear 212, the rotating member, the transmission gear 211, the supporting member 22 and the lock catch 23 is perpendicular to the connecting wall, preferably the handle gear 212, the rotating member and the transmission gear 211 are sequentially stacked in the third direction, the handle gear 212 and the transmission gear 211 are respectively and fixedly connected with the rotating member, of course, the transmission gear 211 and the rotating member can be in an integrated structure, the handle gear 212, the rotating member and the transmission gear 211 are in an integrated structure, the first transmission member 81 is rotatably mounted on the connecting wall, the first transmission member 81 is arranged along the first direction and is stacked on the connecting terminal 9 in the third direction, the first transmission member 81 can extend into the adjacent breaker pole 1, the supporting member 22 is located on one side of the operation assembly 21 far away from the connecting terminal, the moving contact 41 is opposite to the fixed contact 42, the moving contact 41 is connected to the supporting member 22, the lock catch 24 is in snap fit with the lock catch 23 and respectively rotatably assembled on the supporting member 22, the adjacent two lock catches 23 are located on the same plane, and the lock catch 23 is provided with a first coupling portion 2331 and a second coupling portion 2.

In this embodiment, the multipolar circuit breaker includes three circuit breaker poles 1 arranged side by side along a first direction, the first transmission member 81 includes a connecting rod 811 and at least one section of rack, the rack is connected to the connecting rod 811 as a meshing portion 812, and is used for meshing connection with the transmission gears 211, the number of the meshing portion 812 corresponds to the number of the transmission gears 211, in fig. 1-3, the transmission gears 211 are sector gears, preferably the sector gears are in a split structure with the rotating members, the sector gears are made of metal materials, deformation of the plastic materials is avoided, the sector gears and the rack cooperate to have the advantages of small volume and high connection stability, the first transmission member 81 includes two connecting rods 811 and three sections of racks, wherein the racks and the connecting rod 811 are sequentially connected into a whole in the first direction, that is, one connecting rod 811 is connected between the two sections of racks, preferably the racks and the connecting rod 811 are rigidly connected, and each section of racks is respectively and correspondingly meshed with the transmission gears 211 of one circuit breaker pole 1.

Further, be equipped with the slip guide structure between casing and first driving medium 81, provide the guide effect for the removal of first driving medium 81 by the slip guide structure, prevent that first driving medium 81 from taking place the skew at the removal process, guaranteed transmission stability, the slip guide structure includes sliding part 83 and the spout of mutually supporting, as shown in fig. 1, the spout along the first direction has been seted up at the middle part of connecting rod 811, be equipped with sliding part 83 at the casing, sliding part 83 can slide and inlay in the spout, in order to guarantee that first driving medium 81 removes along the first direction, of course, also can set up the recess at the middle part of rack, this recess can with sliding part 83 sliding fit, also can with sliding part 83 locating fit make first driving medium 81 stop the removal in the first direction.

As another embodiment, the first transmission member 81 is simplified to include only the connecting rod 811, the operation assembly 21 includes the handle gear 212 and the rotating member coaxially assembled, the transmission gear 211 is omitted, at this time, one end of the connecting rod 811 is bent and connected with one rotating member, and the other end of the connecting rod 811 is bent and connected with the adjacent rotating member, which has the advantage of simple structure, but the stability of the fit is not as stable as that of the transmission gear 211 and the engaging portion 812, and is inconvenient to be matched with the electric operation mechanism 3.

When the circuit breaker pole 1 is further provided with the electric operating mechanism 3, preferably as shown in fig. 1-4, the electric operating mechanism 3 is arranged at a position of the casing close to the wiring terminal in a lamination manner and is located between the two wiring terminals 9, the electric operating mechanism 3 comprises a motor 31 and a gear set 32 driven by the motor 31 to rotate, the gear set 32 comprises a plurality of gears in meshed connection, one of the gears is meshed with the handle gear 212 to drive the operating assembly 21 to rotate towards the closing or opening direction, the first transmission member 81 and the electric operating mechanism 3 are arranged in a lamination manner in a third direction, the meshing portion 812 of the first transmission member 81 is meshed with the transmission gear 211, the first transmission member 81 and the electric operating mechanism 3 are respectively linked with the operating assembly 21 and are respectively connected with the transmission gear 211 and the handle gear 212 which are arranged in a lamination manner, so that mutual interference between the electric operating mechanism 3 and the first transmission member 81 is avoided, and the operation stability is ensured. As shown in fig. 1-4, the electric actuator 3 is arranged in the breaker pole 1 in the intermediate position, but of course the electric actuator 3 may also be arranged in the other two breaker poles 1.

A control circuit board for controlling the electric operating mechanism 3 is arranged in one of the circuit breaker poles 1, and a controller of the control circuit board outputs a control signal to control the start and stop of the motor 31.

When the motor 31 rotates in the closing direction according to the received closing control signal, the gear set 32 is driven to rotate in the closing direction, the handle gear 212 meshed with the gear set 32 rotates in the closing direction, in fig. 1, the handle gear 212 rotates clockwise, the whole operating assembly 21 positioned at the same breaker pole 1 with the electric operating mechanism 3 rotates clockwise, the supporting member 2 and the moving contact 41 rotate in the closing direction under the linkage action, meanwhile, the transmission gear 211 also rotates clockwise, so that the first transmission member 81 moves in the first direction under the cooperation of one meshing part 811 and the transmission gear 211, the rest meshing parts 811 of the first transmission member 81 also move in the first direction at the same time, and the transmission gears 211 of the adjacent breaker poles 1 rotate clockwise under the driving of the meshing parts 811 correspondingly meshed with the transmission gears, so that the supporting member 22 in the adjacent breaker poles 1 drives the moving contact 41 to rotate in the closing direction, and synchronous closing of a plurality of breaker poles 1 is realized;

when the motor 31 rotates in the opening direction according to the received opening control signal, the opening signal at this time may be a normal opening command, or may be an opening command output when it is determined that there is a short circuit or overload, the gear set 32 is driven to rotate in the opening direction, the handle gear 212 meshed with the gear set 32 rotates in the opening direction, and in fig. 3, the handle gear 212 rotates in the counterclockwise direction, the operating assembly 21 located in the same breaker pole 1 as the electric operating mechanism 3 integrally rotates in the counterclockwise direction, the supporting member 2 and the moving contact 41 rotate in the opening direction under the linkage action, and meanwhile, the transmission gear 211 also rotates in the counterclockwise direction, so that the first transmission member 81 moves in the first direction under the cooperation of one meshing portion 811 and the transmission gear 211, and the other meshing portions 811 of the first transmission member 81 also simultaneously move in the first direction, so that the transmission gears 211 of adjacent breaker poles 1 respectively rotate in the counterclockwise direction under the driving of the meshing portions 811 correspondingly connected with the same, and the supporting member 22 in the adjacent breaker poles 1 drives the moving contact 41 to rotate in the opening direction, thereby realizing synchronous opening of a plurality of breaker poles 1.

An arc extinguishing system 5 is arranged at one end of the shell far away from the wiring end, the arc extinguishing system 5 is matched with the contact mechanism and used for extinguishing an arc generated by breaking of the contact mechanism, the arc extinguishing system 5 comprises an arc extinguishing chamber 51, an arc separating wall 52 and a pair of arc striking plates 53, wherein the fixed contact 42 and the arc extinguishing chamber 51 are arranged along a second direction, the arc extinguishing chamber 51 and the fixed contact 42 are arranged side by side along the second direction and are positioned at one side of the circuit breaker pole 1 opposite to the moving contact 41, the arc extinguishing chamber 51 is obliquely arranged, the arc entering end of the arc extinguishing chamber 51 is obliquely oriented to the moving contact 41, preferably, the included angle between the exhaust direction from the arc entering end to the exhaust end of the arc extinguishing chamber 51 and the first direction is smaller than 30 degrees, and the exhaust direction from the arc entering end to the exhaust end of the arc extinguishing chamber 51 is basically along the first direction and slightly obliquely close to be parallel to the first direction, so that the exhaust end faces the side wall of the circuit breaker pole 1 in the first direction, and safety is improved; the arc separation wall 52 is located between the contact mechanism and the arc entering end of the arc extinguishing chamber 51, and the arc separation wall 52 is stacked below the moving contact 41 in the third direction, a pair of arc striking plates 53 are respectively arranged along two sides of the arc separation wall 52 in an extending mode, one ends of the arc striking plates 53 are connected with the contact mechanism, that is, the pair of arc striking plates 53 are oppositely arranged at intervals, the moving contact 41 and the fixed contact 42 are located between the pair of arc striking plates 53 in a matched mode, and the other ends of the pair of arc striking plates 53 extend into the arc extinguishing chamber 51 and are used for introducing an arc into the arc extinguishing chamber 51.

Further, the control circuit board for controlling the start and stop of the motor 31 is preferably located in the same breaker pole 1 with the electric operating mechanism 3, of course, the control circuit board may also be located in a different breaker pole 1 with the electric operating mechanism 3, the control circuit board includes a controller, the controller outputs a signal according to a control command to control the motor 31, the control circuit board is preferably located in a position far away from the terminal in the housing, and the control circuit board is separated from the operating mechanism 2 and the arc extinguishing system 5 in the breaker pole 1 by a partition board, so as to prevent the control circuit board from being interfered.

In addition, a short-circuit protection mechanism 6 and an overload protection mechanism 7 are further arranged in each breaker pole 1, wherein the short-circuit protection mechanism 6 and the overload protection mechanism 7 are arranged at the side positions of the breaker pole 1, preferably as shown in fig. 1-4, the short-circuit protection mechanism 6, the overload protection mechanism 7 and the fixed contact 42 are positioned at the same side of the breaker pole 1 (a shell), wherein the short-circuit protection mechanism 6 is closer to a wiring terminal, one end of the short-circuit protection mechanism 6 is electrically connected with one wiring terminal 9, and the other end of the short-circuit protection mechanism 6 extends obliquely between the operation assembly 21 and the supporting piece 22 for being matched with the lock catch 23; one end of the overload protection mechanism 7 is opposite to the support 22 in the second direction, and the other end of the overload protection mechanism 7 is bent and extended in the first direction to a side of the support 22 opposite to the lock catch 23. One connection terminal 9, the short-circuit protection mechanism 6, the overload protection mechanism 7 and the stationary contact 42 are arranged in this order along the second direction.

As shown in fig. 2 and 4, the short-circuit protection mechanism 6 includes a yoke 61, an armature 62 and a reset member, the yoke 61 is electrically connected with one connecting terminal 9, in this embodiment, one end of the connecting terminal 9 connected with the yoke 61 extends from the connecting port, the middle part of the connecting terminal 9 is attached to the side of the housing and is arranged along the second direction, the other end of the connecting terminal is inclined and extended towards the direction of the supporting member 22, the yoke 61 is attached to the other end of the connecting terminal 9, one end of the armature 62 is rotatably connected with the yoke 61, the other end of the armature 62 is inclined and extended between the supporting member 22 and the operating assembly 21 for being matched with the lock catch 23, one end of the elastic member is fixedly connected, and the other end of the elastic member is connected with the armature 62 for providing a reset force for the armature 62.

The overload protection mechanism 7 includes a fixing member 71 and a bimetal 72, wherein the fixing member 71 is correspondingly disposed at a side position of the housing along the second direction, one end of the bimetal 72 is connected with the fixing member 71, the other end of the bimetal 72 is bent along the first direction and extends to a side of the support 22 opposite to the lock catch 23, at this time, in the first direction, the overload protection mechanism 7, the short-circuit protection mechanism 6 and the operating mechanism 2 are sequentially disposed along the first direction, and the other end of the armature 62 and the other end of the bimetal 72 are respectively disposed at two sides of the lock catch 23, in this embodiment, a second mating portion 232 mated with the armature 62 of the short-circuit protection mechanism 6 is disposed at a side of the lock catch 23 facing the operating assembly 21, and a third mating portion 233 mated with the bimetal 72 of the overload protection mechanism 7 is disposed at a side of the lock catch 23 facing away from the operating assembly 21.

In combination with fig. 4 and 5, a latch 23 structure applied to this embodiment is provided, the latch 23 includes a latch body, an assembly hole 234 is provided in the middle of the latch body, the latch 23 is rotationally assembled in the supporting member 22 through the assembly hole 234, the side wall of the latch body protrudes in three directions along the radial direction of the assembly hole 234 to form a first mating portion 231, a second mating portion 232 and a third mating portion 233, the first mating portion 231 is located between the second mating portion 232 and the third mating portion 233, a latch groove is formed on one side of the first mating portion 231 facing the second mating portion 232, a latch groove is formed on one end of the latch 24, the second mating portion 232 faces the side wall of the first mating portion 231 as a mating surface, the armature 62 of the short-circuit protection mechanism 6 is opposite to the mating surface, when a short-circuit fault occurs, the armature 62 pushes the mating surface to rotate the latch 23, the latch 23 is broken in a manner, an arc groove and a circular hole are formed in the third mating portion 233, the arc groove is located as a second coupling portion 2332, wherein the arc groove and the assembly hole 234 is co-located on one side of the outer side of the first mating portion 234, which is far from the arc groove 23, and the side wall of the circular hole is located on the outer side of the circular hole 23, and the side of the circular hole is opposite to the side of the flange 23, and the side of the flange 23 is 72 is pushed by the flange 72 when the overload protection mechanism is in the overload protection.

It should be noted that, in the description of the present utility model, the terms "upper", "lower", "left", "right", "inner", "outer", and the like indicate an orientation or a positional relationship based on that shown in the drawings or an orientation or a positional relationship conventionally put in use, and are merely for convenience of description, and do not indicate that the apparatus or element to be referred to must have a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating relative importance.

The foregoing is a further detailed description of the utility model in connection with the preferred embodiments, and it is not intended that the utility model be limited to the specific embodiments described. It will be apparent to those skilled in the art that several simple deductions or substitutions may be made without departing from the spirit of the utility model, and these should be considered to be within the scope of the utility model.

Claims (10)

1. Multipole circuit breaker, including at least two circuit breaker poles (1), adjacent two circuit breaker poles (1) set up side by side along first direction, and every circuit breaker pole (1) includes operating device (2), its characterized in that: adjacent two operating mechanism (2) are located the coplanar and are connected through the first driving medium (81) linkage that sets up along the first direction, at least in one of them circuit breaker utmost point (1) equipment electric operating mechanism (3), electric operating mechanism (3) are connected with the operating mechanism (2) drive of same circuit breaker utmost point (1), operating mechanism (2) include operating unit (21), electric operating mechanism (3) are connected with the operating unit (21) drive of same circuit breaker utmost point (1), and adjacent two operating unit (21) are connected through first driving medium (81) linkage.

2. The multipole circuit breaker according to claim 1, characterized in that: the operation assembly (21) comprises a handle gear (212), the electric operation mechanism (3) comprises a motor (31) and a rotating gear set (32) driven by the motor (31), and the gear set (32) is in meshed connection with the handle gear (212).

3. Multipole circuit breaker according to claim 1 or 2, characterized in that: the operation assembly (21) comprises a transmission gear (211), the first transmission member (81) comprises a meshing part (812), and the meshing part (812) is in meshing connection with the transmission gear (211) so as to enable the first transmission member (81) to move along a first direction.

4. A multipole circuit breaker according to claim 3, characterized in that: the transmission gears (211) are sector gears, the first transmission member (81) comprises a connecting rod (811) and at least one section of rack connected to the connecting rod (811), the rack is used as meshing parts (812), and each meshing part (812) is correspondingly meshed with one transmission gear (211).

5. The multipole circuit breaker according to claim 1, characterized in that: the operating mechanism (2) further comprises a support piece (22) assembled in a rotating mode, the support piece (22) is connected with the operating assembly (21) in a linkage mode through a connecting rod (25), and a snap-fit jump buckle (24) and a lock catch (23) are assembled on the support piece (22) in a rotating mode.

6. The multipole circuit breaker of claim 5, wherein: the operation assembly (21) comprises a handle gear (212), a rotating piece and a transmission gear (211) which are coaxially assembled and are in linkage, the rotating piece is in linkage connection with the supporting piece (22) through a connecting rod (25), the first transmission piece (81) comprises a meshing part (812), the meshing part (812) is in meshing connection with the transmission gear (211), the electric operation mechanism (3) comprises a motor (31) and a rotating gear set (32) driven by the motor (31), and the gear set (32) is in meshing connection with the handle gear (212).

7. The multipole circuit breaker according to claim 1, characterized in that: the circuit breaker pole (1) comprises a shell, a sliding guide structure matched with the shell is arranged between the shell and the first transmission piece (81), and the sliding guide structure provides a guide function for the movement of the first transmission piece (81).

8. The multipole circuit breaker according to claim 1, characterized in that: the casing includes a pair of end wall, a pair of lateral wall and a pair of connecting wall, wherein a pair of lateral wall is connected between a pair of end wall, and a pair of lateral wall sets up relatively, a pair of connecting wall respectively with a pair of end wall, a pair of lateral wall is connected and is encircled the casing that forms the cuboid, the line between a pair of lateral wall is first direction, the line between a pair of end wall is the second direction, the line between a pair of connecting wall is the third direction, first direction, second direction and third direction mutually perpendicular, a pair of wiring mouth has been seted up at the one end wall of casing, cooperate in the wiring mouth and be equipped with binding post (9), make the one end of circuit breaker utmost point (1) form the wiring, operating device (2) and electric operating device (3) assemble in the connecting wall, the lateral wall of adjacent two casings is adjacent, the lateral wall of casing is passed perpendicularly to first driving medium (81).

9. The multipole circuit breaker of claim 8, wherein: a pair of connecting terminals (9) are arranged on two sides of the electric operating mechanism (3), and the first transmission piece (81) is respectively overlapped with the electric operating mechanism (3) and the connecting terminals (9) in the third direction.

10. The multipole circuit breaker of claim 5, wherein: an arc extinguishing system (5) is arranged at one end of a breaker pole (1) far away from a wiring terminal, a contact mechanism is arranged between the arc extinguishing system (5) and a supporting piece (22), the contact mechanism comprises a moving contact (41) and a fixed contact (42) which are matched with each other, the moving contact (41) is connected with the supporting piece (22) in a linkage way, and the fixed contact (42) is fixed at one side of the arc extinguishing system (5);

a short-circuit protection mechanism (6) and an overload protection mechanism (7) are arranged on the same side of the supporting piece (22), and one wiring terminal (9), the short-circuit protection mechanism (6), the overload protection mechanism (7) and the fixed contact (42) are sequentially arranged along the second direction.

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