CN218385046U - Circuit breaker - Google Patents

Abstract

A circuit breaker comprises a shell and at least one circuit breaker pole arranged in the shell, wherein each circuit breaker pole comprises at least one phase main line, a first wiring port is formed in the side wall of the shell, at least one phase main line is connected with a leading-out conductive piece, and the leading-out conductive piece is provided with a plug part; the plug part is provided with a slot and is arranged opposite to the first wiring port, and/or at least one plug part passes through the first wiring port and extends out of the shell. The utility model discloses have the leading-out electrically conductive piece of portion of inserting at main line connection, the accessory module that makes the circuit breaker inserts the portion of inserting and pegs graft the cooperation, perhaps the portion of inserting stretches outside the shell and the cooperation of pegging graft of the accessory module of circuit breaker, do benefit to the accessory module and the assembly of circuit breaker grafting of circuit breaker to replace prior art and connect the accessory module and the circuit breaker of circuit breaker through the wire, be favorable to realizing the accessory module of circuit breaker and the automatic assembly of circuit breaker, accord with the modular development of circuit breaker.

Description

Circuit breaker

Technical Field

The utility model relates to a low-voltage apparatus field, concretely relates to circuit breaker.

Background

The low-voltage circuit breaker can be used for distributing electric energy and protecting overload and short circuit of lines and power supply equipment, and can also be used for infrequent switching of the lines and infrequent starting of the motor. With the continuous development of the internet of things technology and the artificial intelligence technology, the low-voltage circuit breaker is small in size and modular. In order to satisfy current user demand, the circuit breaker need be connected with the accessory module, however, current circuit breaker does not set up the slot for the accessory module is connected in the position with the circuit breaker concatenation only, and the accessory module still need carry out loaded down with trivial details wiring just can insert the major loop of circuit breaker, is unfavorable for the modular development of circuit breaker.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art's defect, provide a circuit breaker that wiring is convenient and satisfy the modularization development.

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

a circuit breaker comprises a shell and at least one circuit breaker pole arranged in the shell, wherein each circuit breaker pole comprises at least one phase main line, a first wiring port is formed in the side wall of the shell, at least one phase main line is connected with a leading-out conductive piece, and the leading-out conductive piece is provided with a plug part;

the plug part is provided with a slot and is arranged opposite to the first wiring port, and/or at least one plug part passes through the first wiring port and extends out of the shell.

Further, the circuit breaker utmost point includes a looks L looks main line and N looks main line at least, N looks main line and one of them looks L looks main line are connected with one respectively and draw forth electrically conductive piece be provided with two first wiring mouths side by side on one side lateral wall of shell.

Furthermore, the shell side wall provided with the first wiring port comprises a first cover body and a second cover body which are mutually spliced, wherein one first wiring port is positioned at the splicing position of the first cover body and the second cover body.

Furthermore, the circuit breaker pole comprises an N pole static contact, and a static contact plate of the N pole static contact is connected with a leading-out conductive piece.

Further, at least one breaker pole comprises a short-circuit protection mechanism, and a leading-out conductive piece is connected to the short-circuit protection mechanism.

Furthermore, the short-circuit protection mechanism comprises a coil assembly, a first terminal of a coil of the coil assembly is used as a leading-out conductive piece, and the plug part is a conductive area which leads the first terminal to penetrate through the first wiring port and extend out of the shell.

Furthermore, the short-circuit protection mechanism comprises a coil assembly, a connecting plate is connected to a first wiring end of a coil of the coil assembly, the connecting plate serves as a leading-out conductive piece, and a plug portion is arranged at one end, far away from the first wiring end, of the connecting plate.

Furthermore, the plug part comprises a first contact piece and a second contact piece, one end of the second contact piece is bent and connected with the first contact piece, and the other end of the second contact piece is arranged at an interval with the first contact piece, so that a slot is formed between the first contact piece and the second contact piece.

Further, including two circuit breaker poles, one of them circuit breaker pole is the L utmost point, the L utmost point includes L utmost point incoming line terminal, L utmost point contact mechanism and short-circuit protection mechanism, and L utmost point contact mechanism includes L utmost point moving contact and L utmost point static contact, L utmost point moving contact is connected with L utmost point incoming line terminal electricity, and L utmost point static contact is connected with the second wiring end of short-circuit protection mechanism's coil, and the first wiring end of coil is connected with the connecting plate, and the connecting plate is as drawing electrically conductive, and the one end that the connecting plate is close to L utmost point static contact is equipped with the portion of inserting.

Furthermore, one of the two breaker poles is an N pole, the N pole comprises an N pole incoming line terminal and an N pole contact mechanism, the N pole contact mechanism comprises an N pole moving contact and an N pole static contact, the N pole moving contact is electrically connected with the N pole incoming line terminal, the static contact plate of the N pole static contact is connected with another leading-out conductive piece, and the leading-out conductive pieces of the L pole and the N pole are arranged side by side and extend towards the same direction.

Furthermore, the breaker pole is only provided with an incoming line terminal or an outgoing line terminal, and an insulating part is convexly arranged in the middle of the side wall of one side of the shell corresponding to the first wiring port.

The utility model discloses a circuit breaker draws forth electrically conductive piece at the main line connection, draw forth electrically conductive piece and be equipped with the portion of inserting, make the accessory module of circuit breaker insert the portion of inserting and peg graft the cooperation, perhaps insert the portion of inserting stretch outside the shell with the accessory module of circuit breaker peg graft the cooperation, do benefit to the accessory module and the circuit breaker grafting assembly of circuit breaker to replace prior art and connect the accessory module and the circuit breaker of circuit breaker through the wire, be favorable to realizing the automatic assembly of the accessory module and the circuit breaker of circuit breaker, accord with the modular development of circuit breaker.

In addition, the N-phase main line and one of the L-phase main lines are respectively led out of the conductive parts, so that the accessory module can be conveniently connected to take electricity.

In addition, the shell side wall provided with the first wiring port is formed by splicing the first cover plate and the second cover plate, and the electrical isolation between the two first wiring ports is ensured. In addition, the leading-out conductive piece is connected to a coil of the short-circuit protection mechanism and extends outwards and vertically along a plane perpendicular to the arc extinguish chamber, so that an accessory module can be conveniently inserted into the side face of the circuit breaker, and the length of the leading-out conductive piece can be shortened.

Drawings

Fig. 1 is a schematic structural diagram of a circuit breaker pole according to the present invention;

fig. 2 is a schematic structural diagram of a first housing in the present invention;

fig. 3 is a schematic diagram of the internal structure of the circuit breaker pole of the present invention;

fig. 4 is a schematic diagram (the other side) of the internal structure of the breaker pole of the present invention;

fig. 5 is a schematic structural diagram of a coil according to the present invention (first embodiment);

fig. 6 is a schematic structural view of the N-pole fixed contact of the present invention;

fig. 7 is a schematic structural diagram of a coil according to the present invention (second embodiment).

Detailed Description

The following description will further describe a specific embodiment of the circuit breaker according to the present invention with reference to the embodiments shown in fig. 1 to 7. The circuit breaker of the present invention is not limited to the description of the following embodiments.

A circuit breaker comprises a shell and at least one circuit breaker pole 2 arranged in the shell, wherein each circuit breaker pole 2 comprises at least one phase main line, a first wiring port 111 is arranged on the side wall of the shell, at least one phase main line is connected with a leading-out conductive piece 45, and the leading-out conductive piece 45 is provided with a plug part 451; the patch part 451 has a slot therein and is disposed opposite to the first wiring port 111, and/or at least one of the patch parts 451 extends out of the housing through the first wiring port 111.

The utility model discloses a circuit breaker draws forth electrically conductive piece 45 at the main line connection, draw forth electrically conductive piece 45 and be equipped with and connect portion 451, make the accessory module of circuit breaker insert connect portion 451 peg graft the cooperation, perhaps connect portion 451 to stretch outside the shell with the accessory module of circuit breaker and peg graft the cooperation, do benefit to the accessory module and the circuit breaker grafting assembly of circuit breaker to replace prior art and connect the accessory module and the circuit breaker of circuit breaker through the wire, be favorable to realizing the automatic assembly of the accessory module of circuit breaker and circuit breaker, accord with the modular development of circuit breaker.

As shown in fig. 1 to 7, the circuit breaker includes a housing, at least one circuit breaker pole 2 is disposed in the housing, the housing includes at least one installation cavity for assembling the circuit breaker pole 2, when a plurality of installation cavities are disposed in the housing, the housing may include a plurality of fixed partitions disposed inside the housing, the installation cavity is formed by an interval between two adjacent partitions, or the housing includes an upper cover, a base and a partition assembled between the upper cover and the base, wherein one installation cavity is formed by covering the upper cover and one partition, the base and another partition form another installation cavity, the other partitions respectively form a plurality of independent installation cavities in pairs, the independent installation cavities may be used as first housings 11, two adjacent first housings 11 may be assembled together, and thus, the housing of the circuit breaker includes a plurality of assembled first housings 11.

In every circuit breaker utmost point 2 be equipped with a looks main line, be in every circuit breaker utmost point 2 set up N looks main line or a looks L looks main line, for example, be provided with four circuit breaker utmost points in the circuit breaker, wherein three circuit breaker utmost point is the L utmost point and is provided with a looks L looks main line and operating device respectively, and a circuit breaker utmost point is equipped with N looks main line and operating device, or sets up two circuit breaker utmost points in the circuit breaker, and two circuit breaker utmost points all are the L utmost point, or are the L utmost point and the N utmost point respectively. Naturally, it is also possible to provide two-phase main lines simultaneously in the same breaker pole 2, for example, to provide an L-phase main line and an N-phase main line simultaneously in one breaker pole, or to provide two-phase L-phase main lines simultaneously in one breaker pole, preferably only one operating mechanism in the same breaker pole.

This embodiment uses two circuit breaker utmost point 2 as an example, only sets up a looks main line in every circuit breaker utmost point 2, and one of them circuit breaker utmost point 2 is equipped with L looks main line as the L utmost point that is exactly, and another circuit breaker utmost point 2 is equipped with N looks main line as the N utmost point, forms the main loop of circuit breaker jointly by L looks main line and N looks main line, and the L utmost point and the N utmost point assemble in same installation cavity jointly, and the L utmost point, the N utmost point sets up in same first casing 11 jointly.

Each circuit breaker pole 2 comprises a pair of wiring terminals connected to a phase main line, a handle mechanism 21, an operating mechanism 22 and a contact mechanism, wherein the handle mechanism 21, the operating mechanism 22 and the contact mechanism are sequentially connected in a linkage manner, the wiring terminals comprise an inlet wire terminal and an outlet wire terminal, the contact mechanism is connected between the wiring terminals and used for controlling the on-off of the phase main line, the contact mechanism comprises a moving contact and a fixed contact which are matched with each other, the moving contact is connected with the operating mechanism 22 in a linkage manner, the fixed contact is fixedly assembled on one side opposite to the moving contact, the operating mechanism 22 is driven by manually operating the handle mechanism 21, and the moving contact is contacted with or separated from the fixed contact so as to realize the on-off control of the main line in the circuit breaker pole 2. In addition, each circuit breaker pole 2 may further be provided with an arc extinguishing system and a short-circuit protection mechanism and/or an overload protection mechanism 26 that is matched with the operating mechanism 22, the arc extinguishing system is matched with one side of the contact mechanism and is used for extinguishing an electric arc generated by the moving contact and the static contact in the switching-on and switching-off process, and the short-circuit protection mechanism and/or the overload protection mechanism 26 triggers the operating mechanism 22 to trip when a short-circuit or overload fault occurs in the main circuit.

As shown in fig. 1 to 4, the connection terminal of the breaker pole 2 is disposed at least one end of the housing, the incoming line terminal (outgoing line terminal) of two adjacent breaker poles 2 is located at the same end of the housing, the handle mechanism 21 is rotatably assembled on the upper portion of the housing (the first housing 11), the operating mechanism 22 is disposed at one side of the handle mechanism 21, the handle mechanism 21 and the operating mechanism 22 are linked by a connecting rod, the moving contact is connected to the lower portion of the operating mechanism 22, the operating mechanism 22 and the handle mechanism 21 of two adjacent breaker poles 2 are linked, respectively, the arc extinguish chamber 24 and the static contact of the arc extinguish system are fixed in the middle of the housing (the first housing 11), wherein the static contact is opposite to the moving contact.

The operating mechanism 22 of each circuit breaker pole 2 comprises a lever which is rotatably assembled in the shell, the lever can be rotatably connected with the side wall of one side of the shell or a partition plate in the shell or the side wall of the first shell 11, a jump buckle and a lock catch are rotatably assembled on the lever, a moving contact is rotatably installed through a contact support and is linked with the lever, the jump buckle is in hasp fit with one end of the lock catch, the other end of the jump buckle is linked with a connecting rod, the lock catch is provided with a linkage part which is integrally in a rod-shaped structure, an avoidance hole is formed in the side wall of one side of the shell or the partition plate in the shell or the side wall of the first shell 11 corresponding to the linkage part, and one end of the linkage part can penetrate through the avoidance hole; an energy storage spring is assembled between the lever and the contact support, two elastic arms of the energy storage spring are respectively abutted against the contact support and the lever, and the energy storage spring is preferably a torsion spring which is coaxially and rotatably assembled with the contact support.

As shown in fig. 3 and 4, a short-circuit protection mechanism and an overload protection mechanism 26 are disposed in the L pole, wherein the short-circuit protection mechanism is disposed between the handle mechanism 21 and the arc-extinguishing chamber 24 of the arc-extinguishing system, one end of the short-circuit protection mechanism is opposite to the operating mechanism 22 of the L pole, the overload protection mechanism 26 and the short-circuit protection mechanism are disposed on two sides of the operating mechanism 22 of the L pole, respectively, one end of the overload protection mechanism 26 is engaged with the operating mechanism 22, and the short-circuit protection mechanism, the arc-extinguishing system and the overload protection mechanism 26 may not be disposed in the N pole. Of course, the N pole may also be provided with a short-circuit protection mechanism, an arc extinguishing system and an overload protection mechanism 26, i.e. a structure similar to the L pole is adopted as the N pole. In addition, the operating mechanisms 22 of adjacent circuit breaker poles 2 may share part of the parts, such as levers, contact supports, jumpers, etc., and the handle mechanisms 21 and latches are linked.

An accessory module is further arranged on one side of one of the circuit breaker poles 2, namely the accessory module is arranged on one side of the first shell, the accessory module of the embodiment takes an electric leakage protection module as an example, preferably, the electric leakage protection module comprises a second shell 12, the second shell 12 is spliced with a first shell 11 to form a circuit breaker with an electric leakage protection function, at this time, the shell comprises a second shell 12 and at least one first shell 11, an electric leakage detection circuit and an electric leakage tripping mechanism are assembled in the second shell 12, the electric leakage tripping mechanism comprises a tripping device driven by the electric leakage detection circuit, the electric leakage detection circuit comprises a circuit board and a zero sequence transformer connected with the circuit board, a controller used for driving the electric leakage tripping mechanism is arranged on the circuit board, the zero sequence transformer is connected with an L-phase main circuit and an N-phase main circuit and used for detecting an electric leakage signal, when the electric leakage detection circuit detects an electric leakage fault, an ejector rod of the tripping device can be driven to act, after the ejector rod finishes acting, one side of the ejector rod of the tripping device is correspondingly provided with an indication piece, a side wall of the ejector rod of the circuit breaker, a side is provided with a hole of the second shell 12 corresponding to the push plate, a linking part of the circuit breaker pole 2 passes through the push plate to be matched with the push plate, and the push plate to drive the existing electric leakage indication part to rotate the tripping mechanism, so as to drive the tripping mechanism to rotate the tripping mechanism, and the tripping mechanism to drive the existing electric leakage indication part to operate the tripping mechanism to operate the electric leakage indication part to rotate the electric leakage indication mechanism, and to drive the tripping mechanism to operate the electric leakage indication mechanism to operate the electric leakage tripping mechanism.

The leakage protection module is further provided with a leakage test mechanism, the leakage test mechanism comprises a leakage test loop for taking electricity from a main loop, the leakage test loop comprises a test button, a first elastic piece and a second elastic piece, the test button is assembled on the second shell 12 in a sliding mode, the first elastic piece and the second elastic piece are matched to form a breakpoint of the leakage test loop, the test button is pressed to enable the first elastic piece to generate elastic deformation so as to connect the breakpoint of the leakage test loop, preferably, a leakage test loop winding of a zero sequence transformer is further connected in the leakage test loop in series, and a leakage detection winding of the zero sequence transformer is connected with the circuit board.

An improvement point of this application lies in, accessory module and circuit breaker utmost point 2 are modular structure respectively, accessory module also adopts two modular structure to assemble with the assembly of circuit breaker utmost point 2, the earth leakage protection module of this embodiment also adopts modular structure, the second casing 12 of earth leakage protection module and the first casing 11 of circuit breaker utmost point 2 assemble, assemble the shell that forms the circuit breaker by first casing 11 and second casing 12, and simultaneously, earth leakage protection module assembles and can realize simultaneously getting from the main loop of circuit breaker utmost point 2 in one side of circuit breaker utmost point 2, preferably earth leakage protection module adopts in the main loop that plug-in connection's mode inserted circuit breaker, that is, earth leakage protection module adopts the L looks main line of plug-in connection's mode inserted circuit breaker utmost point 2, in the N looks main line. It should be noted that, as another embodiment, the power taking of the L-phase main line and the N-phase main line of the earth leakage protection module 3 and the breaker pole 2 may be contact power taking, but the contact power taking mode is not as stable as plug-in connection.

Specifically, a wiring port is formed in a side wall of the first casing 11 adjacent to the second casing 12, at least one leading-out conductive piece 45 is connected to the L-phase main line or the N-phase main line of the breaker pole, a wiring terminal of the earth leakage protection module 3 is connected to a lug, the leading-out conductive piece 45 and/or the lug form a plug-in connection structure connected to the main circuit through the wiring port, and the leading-out conductive piece 45 and/or the lug of the plug-in connection structure penetrate through a threading hole of the zero sequence transformer 34.

Preferably, at least one of the lead-out conductive members 45 is provided with a patch portion 451, the patch portion 451 corresponding to the first wiring port 111 of the side wall of the first housing 11; a second inserting part is formed at one end of the lug plate, the second inserting part penetrates through the threading hole of the zero sequence transformer 34 to form a second inserting part, and the second inserting part corresponds to a second wiring port on the side wall of the second shell 12; preferably, the second insertion portion is a sheet-like structure, the plug portion 451 is a slot extending into the first connection port 111, and the second insertion portion extends from the second housing 12 to be inserted into the plug portion 451. Of course, as another embodiment, the connection portion 451 may also extend from the first housing 11 and into the second housing 12 to be connected with the second connection portion. As another embodiment, the second insertion portion on the terminal strip may be in a slot structure, the connection portion 451 on the leading-out conductive member may be in a sheet structure, and the connection portion 451 is inserted into the second insertion portion for insertion and engagement. By the lug with draw electrically conductive plug connection structure that the cooperation formed, make the major loop pass zero sequence transformer 34's through wires hole when realizing that earth leakage protection module 3 is connected the electricity with circuit breaker utmost point 2, left out electrically conductive, do benefit to and reduce the volume of circuit breaker, make earth leakage protection module 3 and circuit breaker utmost point 2 be two independent modules, satisfy the modular development of circuit breaker.

Preferably, the leading-out conductive members 45 are connected to the main circuit of the circuit breaker, that is, the leading-out conductive members 45 are respectively connected to the N-phase main circuit and one L-phase main circuit of the circuit breaker pole 2, and the wiring ports corresponding to the leading-out conductive members 45 are respectively provided on the side walls of the first casing 11 and the second casing 12 adjacent to each other, that is, the wiring ports are provided on the side wall of the casing in the thickness direction of the circuit breaker pole 2, wherein the wiring ports are opposite to the wiring ports of the zero sequence transformer 34, specifically, the wiring ports include a first wiring port 111 provided in the middle of the side wall of the first casing 11 and a second wiring port provided in the middle of the side wall of the second casing 12, wherein the number of the first wiring ports 111 may correspond to the number of the leading-out conductive members 45, and the number of the second wiring ports corresponds to the number of the wiring pieces one-to-one, or, only one first wiring port 111 and one second wiring port may be disposed on one side of the first housing 11 and one side of the second housing 12, so that the two leading-out conductive members 45 correspond to the same first wiring port 111, and the two connection tabs correspond to the same second wiring port of the second housing 12, and in addition, the two leading-out conductive members 45 may extend into the second housing 12 to be respectively inserted into the two connection tabs, or the two connection tabs extend out of the second housing 12 to be respectively inserted into the two leading-out conductive members 45, or one leading-out conductive member 45 extends into the second housing 12 to be inserted into one connection tab, and the other connection tab extends out of the second housing 12 to be inserted into the other leading-out conductive member 45, so that when the earth leakage protection module is inserted into the circuit breaker pole 2, the two connection tabs may be respectively inserted into the L-phase main line and the N-phase main line to obtain electricity. Of course, other accessory modules of the circuit breaker can also be connected with the main loop of the circuit breaker pole 2 in such a wiring mode to get electricity.

Preferably, each breaker pole 2 comprises an incoming line terminal and an outgoing line terminal which are respectively arranged at two ends of the first shell 11, a phase main line is connected between the incoming line terminal and the outgoing line terminal, and two connecting terminals of the leakage protection module are respectively an L-pole outgoing line terminal and an N-pole outgoing line terminal, so that the structure does not influence the electricity taking of the leakage protection module from a main loop of the breaker pole 2, and can also ensure that the normal wiring use of the breaker pole 2 is not influenced when the leakage protection module is not spliced; the outlet terminal of the circuit breaker pole 2 can be omitted after the earth leakage protection module 3 is spliced, and the outlet terminal can be shielded by the shielding plate.

Of course, only an incoming line terminal or an outgoing line terminal may be disposed in the breaker pole 2, in this embodiment, the incoming line terminal is disposed in the breaker pole 2, and the outgoing line terminal is correspondingly disposed in the earth leakage protection module, that is, the L-pole incoming line terminal 41-1a and the N-pole incoming line terminal 41-2a are disposed at one end of the first housing 11 in parallel, the earth leakage protection module 3 includes two connection terminals disposed at the same end of the second housing 12, the two connection terminals are the L-pole outgoing line terminal 41-1b and the N-pole outgoing line terminal 41-2b, the L-phase main line of the L-pole is connected between the L-pole incoming line terminal 41-1a and the L-pole outgoing line terminal 41-1b, and the N-phase main line of the N-pole is connected between the N-pole incoming line terminal 41-2a and the N-pole outgoing line terminal 41-2b, so that the breaker can be normally connected after the earth leakage protection module is spliced with the breaker pole 2, and this structure can save the internal space of the breaker.

Furthermore, the leading-out conductive member 45 is provided with an elastic patch part 451, at least one end of the first housing 11 is provided with a wiring terminal, the side wall of one side of the first housing 11 is provided with two first wiring ports 111, each patch part 451 is provided with a slot, each patch part 451 corresponds to one first wiring port 111, that is, each patch part 451 is located in the first housing 11 and is opposite to the first wiring port 111, preferably, the slot of each patch part 451 correspondingly extends into one first wiring port 111, the side wall of one side of the second housing 12 is provided with two second wiring ports, two wiring pieces respectively correspondingly penetrate through the second wiring ports to form second patch parts and correspondingly connect with one patch part 451 in a plug-pull manner, preferably, the slot can sequentially penetrate through the first wiring ports 111 and the second wiring ports 121 to be plugged with the wiring pieces, and naturally, the wiring pieces sequentially penetrate through the second wiring ports 121, the first wiring ports 111 and are plugged with the slots.

Further, the wire connecting piece and/or the leading-out conductive member 45 correspondingly penetrate through a threading hole of the zero sequence transformer, preferably, the first wire connecting port 111 and the second wire connecting port correspond to the threading hole of the zero sequence transformer, and at the moment, the first wire connecting port 111 and the second wire connecting port are respectively located in the middle of the side walls of the first shell 11 and the second shell 12, so that the length of the wire connecting piece and the leading-out conductive member 45 can be shortened and the occupied space of the wire connecting piece and the leading-out conductive member can be reduced, so that the leading-out conductive member 45 is preferably connected to a component arranged in the middle of the L pole and the N pole, such as a static contact of a contact mechanism, a short-circuit protection mechanism and the like, in this embodiment, the short-circuit protection mechanism is located in the middle of the first shell 11, the zero sequence transformer is located in the middle of the second shell 12, the short-circuit protection mechanism corresponds to the zero sequence transformer, preferably, the leading-out conductive member 45 of the L pole is connected to the short-circuit protection mechanism, and the leading-out conductive member 45 of the N pole is connected to the contact mechanism of the N pole, that the first wire connecting port 111 is located in a position of the shell side wall corresponding to the short-circuit protection mechanism, or a position corresponding to the short-circuit protection mechanism, the zero sequence transformer, and the side wall of the second wire connecting port is located in a position of the second shell 12 corresponding to the threading hole of the zero sequence transformer, and the first wire connecting port 111 is correspondingly, and the wire connecting port is correspondingly matched with the wire connecting port, so that the threading hole of the first wire connecting port, and the first wire connecting port 111 is correspondingly, so that the leading-out conductive member is correspondingly, and the first wire connecting port is correspondingly, so that the leading-out conductive member is correspondingly, the first wire connecting port is correspondingly, and the leading-out conductive member is correspondingly, so that the wire connecting port is correspondingly, and the length of the leading-out conductive member is also can be reduced, and the leading-out conductive member is correspondingly, and the wire connecting port is correspondingly reduced, and the leading-out conductive member, and the first wire connecting port, and the leading-out conductive member, so that the first wire connecting port is correspondingly, and the length of the first wire connecting port, and the wire connecting piece, and the second wire connecting port is correspondingly.

Correspondingly, the electric leakage test circuit of the electric leakage protection module gets electricity from the main circuit, preferably, the second elastic piece is electrically connected with the L-pole outgoing line terminal as an electricity getting end of the electric leakage test circuit, so that the electric leakage test circuit can get electricity from the L-phase main circuit, another electricity getting end of the electric leakage test circuit gets electricity through being directly or indirectly electrically connected with the N-pole outgoing line terminal, the first end of the first elastic piece is connected with the zero sequence transformer, the second end of the first elastic piece is matched with the second end of the first elastic piece to form a breakpoint, therefore, the second elastic piece can form the breakpoint of the electric leakage test circuit and can also be used for getting electricity for the electric leakage test circuit, and the use number of wires is favorably reduced. In addition, the circuit board in the leakage current detection circuit also gets electricity through the second elastic piece, the circuit board is further connected with the third elastic piece, and the second end of the third elastic piece is used as an electricity getting end of the circuit board to be connected with the second wiring piece.

Furthermore, the terminal of the zero sequence transformer in the leakage protection module adopts a contact pin, so that the zero sequence transformer can be connected through plugging, and compared with the existing mode of taking electricity by adopting a conducting wire, the zero sequence transformer has the advantages of convenience in wiring and small number of conducting wires.

A first embodiment is provided in connection with fig. 1-6, in which the breaker pole 2 is in plug-in engagement with the earth leakage protection module, and both lugs are located in the second housing 12. As shown in fig. 1-4, in the L pole, an L pole inlet terminal 41-1a is disposed at one end of the L pole, that is, an L pole inlet terminal 41-1a is disposed at one end of the first housing 11, the contact mechanism of the L pole includes an L pole moving contact and an L pole stationary contact 231, the L pole moving contact is electrically connected to the L pole inlet terminal 41-1a, the L pole stationary contact 231 is fixed at one side of the arc extinguish chamber 24, the short-circuit protection mechanism is disposed between the arc extinguish chamber 24 and the handle mechanism 21, the short-circuit protection mechanism includes a coil assembly, the coil assembly includes a coil frame and a coil 25 wound outside the coil frame, a second terminal of the coil 25 is connected to the L pole stationary contact 231, a connection plate is connected to a first terminal 251 of the coil 25, a conductive member 45 led out from the connection plate as the L pole extends outward in a direction perpendicular to a plane of the arc extinguish chamber 24, the connection plate is disposed along a thickness direction of the circuit breaker pole 2, the connection plate is disposed along a gap between the short-circuit protection mechanism and the arc extinguish chamber 24, a connection plate is disposed at one end far from the first terminal 251, that is disposed at an end of the connection plate, that is disposed at an end far from the first terminal, that is disposed at an end of the connection plate, that is disposed near the connection plate, that is disposed at an end of the connection plate, that is disposed on a connection plate 451, that is disposed near the L pole stationary contact end of the connection plate, that is disposed on the connection plate, that is disposed near the L pole inlet terminal 231.

An N pole and an L pole are arranged in parallel in the same first shell 11, an N pole inlet terminal 41-2a is arranged at one end of the N pole, namely the L pole inlet terminal 41-1a and the N pole inlet terminal 41-2a are arranged in parallel at one end of the first shell 11, a contact mechanism of the N pole comprises an N pole moving contact and an N pole static contact 232, wherein the N pole static contact 232 and the L pole static contact 231 are arranged in parallel, a static contact plate of the N pole static contact 232 is arranged along the horizontal direction in figures 3 and 4, the static contact plate of the N pole static contact 232 corresponds to a gap between a coil component of the L pole and the arc extinguish chamber 24, a leading-out conductive piece 45 is formed by extending outwards from the middle side of the static contact plate of the N pole static contact 232, the leading-out conductive pieces 45 of the N pole and the L pole extend side by side to one side of the first shell 11, namely the leading-out conductive piece 45 of the N pole extends along the plane perpendicular to the plane of the arc extinguish chamber 24 to the side close to the second shell 12, that is, the leading-out conductive member of the N pole extends along the thickness direction of the circuit breaker pole 2, each leading-out conductive member 45 correspondingly extends into one first wiring port 111, the connection portion 451 is provided with a slot extending out of the first wiring port 111, of course, the slot may be located in the first housing 11 or located in the first wiring port 111, and preferably, the housing side wall of the first wiring port 111, that is, one side wall of the first housing 11 includes the first cover 13 and the second cover 14 spliced with each other, one first wiring port 111 is located at the splicing position of the first cover 13 and the second cover 14, the splicing structure is favorable for ensuring the electrical gap and insulation between the two first wiring ports 111, further, an insulation portion 112 is protruded at the lower side edge of each first wiring port 111, the insulation portion 112 plays an insulation role, the two adjacent leading-out conductive pieces 45 are prevented from being short-circuited, and meanwhile, the two leading-out conductive pieces can be matched with the second wiring port to play a role in inserting and guiding. The insulation portion 112 is disposed corresponding to the first wire connection opening 111 and protrudes out of the side wall of the housing, and the insulation portion 112 may be disposed only at the lower edge of the first wire connection opening 111 or disposed around the first wire connection opening 111.

In this embodiment, the plugging portion 451 is, as shown in fig. 5 and 6, composed of a first contact piece and a second contact piece, one end of the second contact piece is bent and connected with the first contact piece, and the other end of the second contact piece is arranged at an interval with the first contact piece, so that a slot is formed in a gap between the first contact piece and the second contact piece, in the figure, the first contact piece is a straight plate structure, in fig. 6, the first contact piece is formed by a stationary contact plate of an N-pole stationary contact 232, in fig. 5, the first contact piece is a connecting plate connected to a first terminal 251 of the coil 25, so that a space occupied by the slot can be saved, and cost can be reduced, the middle portion of the second contact piece is bent and approaches the first contact piece, so that a middle gap of the slot is narrowest, and the whole plugging portion 451 is similar to a hairpin shape, thereby facilitating elastic plugging and matching with second plugging portions of the first terminal piece and the second terminal piece, and facilitating to maintain stable connection.

In the earth leakage protection module, a button groove is arranged on the upper part of the second shell 12, two wiring terminals are arranged at one end of the second shell 12 in parallel, each wiring terminal is connected with a lug, one wiring terminal is used as an L-pole outgoing terminal, the lug connected with the L-pole outgoing terminal is a first lug, the other wiring terminal is used as an N-pole outgoing terminal, the lug connected with the N-pole outgoing terminal is a second lug, the first lug is connected with an outgoing conductive piece 45 of an L pole, the second lug is connected with the outgoing conductive piece 45 of an N pole, at the moment, one end of the shell of the whole circuit breaker is provided with an L-pole incoming terminal 41-1a and an N-pole incoming terminal 41-2a, and the other end of the shell is provided with an L-pole outgoing terminal and an N-pole outgoing terminal.

Two second wiring ports are arranged on the side wall of one side, facing to the first shell 11, of the second shell 12, a zero sequence transformer is assembled at a position corresponding to the second wiring ports, a circuit board is arranged on one side, away from the wiring terminal, of the zero sequence transformer, an arc-shaped depressed area is formed in the edge of one side of the optimized circuit board, the zero sequence transformer is correspondingly assembled in the arc-shaped depressed area, a jack is arranged on the circuit board adjacent to the arc-shaped depressed area, a test button is assembled in a button groove in a sliding mode, a first elastic piece is located between the test button and the zero sequence transformer, the second elastic piece is arranged on one side of the first elastic piece in a matched mode and located above the zero sequence transformer, a second end of the first elastic piece and a second end of the second elastic piece are spaced and oppositely to form a breakpoint, the first end of the first elastic piece is abutted to the middle of the first elastic piece, the first end of the first elastic piece is connected with the circuit board in an inserting mode, the first end of the first elastic piece is connected with a fourth elastic pin, and the optimized elastic pin is close to the fourth elastic pin. And the third elastic piece is connected to the circuit board and is used for electrically connecting the circuit board with the N-pole outgoing line terminal.

The zero sequence transformer comprises an iron core, and a leakage current test loop winding and a leakage current detection winding which are wound outside the iron core, wherein a threading hole is formed in the middle of the iron core, an electrical isolation plate is arranged in the threading hole, the electrical isolation plate divides the threading hole into a first threading hole and a second threading hole which are parallel to each other, preferably, the first threading hole and the second threading hole are in one-to-one correspondence with two second wiring ports respectively, two second insertion parts which are parallel to each other are formed by the first wiring piece and the second wiring piece and penetrate through the two second wiring ports correspondingly, the two second insertion parts are inserted into two insertion parts 451 leading out conductive pieces 45, and the electrical isolation between the first wiring piece and the second wiring piece is realized by the electrical isolation plate.

Electric leakage test return circuit winding includes third contact pin and fourth contact pin, fourth contact pin and first elastic component butt, the third contact pin is pegged graft with the circuit board, the leakage current detects the winding and includes first contact pin, the second contact pin, first contact pin, the second contact pin is connected with the circuit board respectively, wherein, first contact pin, second contact pin and third contact pin are located the same one side of iron core, the fourth contact pin is located the opposite side of iron core, also be exactly first contact pin, second contact pin and third contact pin all extend side by side along the radial of iron core, the outside extension of tangential of iron core is followed to the fourth contact pin, make the fourth contact pin be located the one side that is close to first elastic component, arc depressed area edge at the circuit board is provided with and is used for pegging graft first contact pin, the jack of second contact pin and third contact pin, also be first jack, second jack and third jack, zero sequence mutual inductor's first contact pin, second contact pin and third contact pin can be connected with the circuit board tin soldering.

First lug includes the current conducting plate and the second current conducting plate of L shape, the one end of current conducting plate is connected with a N utmost point leading-out terminal or the utmost point leading-out terminal of L as the first end of first lug, the first end and the utmost point leading-out terminal of L of first lug are connected, the other end avris of current conducting plate outwards extends the bending type along the direction of keeping away from the current conducting plate and forms L shape extension board, first butt groove has been seted up at the avris of L shape extension board, L shape extension board upwards bends and extends, first butt groove is seted up at the avris of L shape extension board, the first end and the first butt groove elasticity butt of second elastic component, by second elastic component and first butt groove elasticity butt, it possesses the convenience of working a telephone switchboard, omit the advantage that wire and occupation space are little, the one end of second current conducting plate is connected with the middle part of extension board, the through wires hole of mutual-inductor is passed to the other end of second current conducting plate, the extension board, the one side of second wiring mouth is kept away from to the laminating zero sequence mutual-inductor of second current conducting plate.

The whole platelike structure that is L shape of second lug, the second lug sets up between binding post and circuit board along vertical direction, and laminating zero sequence transformer sets up the one side of second wiring mouth dorsad, the second butt groove has been seted up to the first end avris of second lug, the second end and the second butt groove butt of third elastic component, the preferred torsional spring of third elastic component, in addition, the first end of second lug is passed through the wire and is connected with the anodal leading-out terminal of N, still be connected with a current conducting plate between preferred wire and the anodal leading-out terminal of N, the second end of second lug passes zero sequence transformer's second through wires hole in proper order, form second grafting portion behind the second wiring mouth of second casing 12.

A second embodiment is provided with reference to fig. 1 and 7, in this embodiment, one terminal lug extends out of the second housing 12 to be plugged with one lead-out conductive member 45, and the other lead-out conductive member 45 extends out of the second housing 12 to be plugged with another terminal lug, that is, a plug portion 451 leading out of the conductive member extends out of the first housing 11 through the first connection port 111 to be plugged with another terminal lug in the second housing 12.

The L pole and the N pole are assembled together in the same first housing 11 as the first embodiment, wherein the L pole and the N pole are arranged in parallel, wherein the N pole includes the same N pole inlet terminal 41-2a as the N pole, an N pole contact mechanism, and an outlet conductive member 45 connected to the N pole stationary contact 232, and the L pole includes the same L pole inlet terminal 41-1a as the L pole, an arc extinguishing chamber 24, an L pole contact mechanism, a short-circuit protection mechanism, and an overload protection mechanism 26, different from the L pole, the first terminal 251 of the coil 25 is used as the outlet conductive member 45 of the L pole, preferably, the first terminal 251 of the coil 25 also extends outward in a direction perpendicular to the plane of the arc extinguishing chamber 24, that is, the first terminal 251 extends outward in the thickness direction of the circuit breaker pole 2, the first terminal 251 of the coil 25 protrudes from one first wiring port 111 of the first housing 11 and correspondingly protrudes into the second housing 12, the end of the first terminal 251 of the coil 25 is formed, the conductive area can be used as a patch plug connection area 451, and the conductive area of the first wiring area can be formed by stripping a conductive patch 451 after the plug-in the first wiring area is formed by the first wiring area of the plug connection of the first wiring module 111.

The earth leakage protection module is assembled in a second shell 12 with the same structure as the first embodiment, the earth leakage protection module comprises an L-pole outgoing line terminal, an N-pole outgoing line terminal, a zero sequence transformer and a circuit board which are the same as the earth leakage protection module, wherein a second lug connected to the N-pole outgoing line terminal is the same as a second lug of the structure of the first embodiment, a third elastic piece is connected between the circuit board and the second lug, a second end of the third elastic piece is abutted against a second abutting groove of the second lug, and different from the earth leakage protection module, a first lug connected to the L-pole outgoing line terminal does not penetrate through a threading hole of the zero sequence transformer any more, a first wiring end 251 of a coil 25 penetrates through a first threading hole of the zero sequence transformer, and the first lug is inserted into a conductive area of the first wiring end 251. In addition, a test button, a first elastic element and a second elastic element are also arranged above the zero sequence transformer, wherein the first elastic element is connected with the zero sequence transformer, one end of the second elastic element is connected with the circuit board, and the second elastic element is connected with the conductive area of the first terminal 251 to obtain electricity.

First lug includes the current-conducting plate of L shape, the one end of current-conducting plate is connected with a binding post (L utmost point leading-out terminal) as the first end of first lug, and the other end avris of current-conducting plate outwards extends along the direction of keeping away from the current-conducting plate and forms the extension board, and the face of extension board sets up along the one side of laminating zero sequence mutual inductor back to the second wiring mouth, the second end as first lug is regarded as to the extension board, and the face of extension board is certain contained angle with the face of current-conducting plate, and the face of preferred extension board is mutually perpendicular with the face of current-conducting plate, has seted up first butt groove at the avris of extension board, and preferred first butt slot is located the downside edge of extension board, and the first wiring end 251 of coil 25 can correspond grafting and first butt inslot, and the conducting region and the butt cooperation of first butt groove of first wiring end 251, make the L looks main line switch-on between earth leakage protection module and the L utmost point, can regard first wiring end 251 as the patch panel 451 that extends to the second casing 12, and the conducting region and the butt groove's butt cooperation by first butt groove, possess the wire 421 and make things convenient for wire and occupy little advantage.

As a third embodiment, when both the two connection tabs penetrate through the second housing 12, the two connection tabs sequentially penetrate through the second connection port 121 and the first connection port 111 and extend into the first housing 11, that is, the two connection tabs respectively penetrate through the first threading hole and the second threading hole of the zero sequence transformer 34 and then are respectively in inserting fit with the two leading-out conductive members, preferably, in this embodiment, the inserting portion 451 is disposed on the two connection tabs, the second inserting portion is disposed at one end of the leading-out conductive members, the inserting portion 451 may select the same slot as the above embodiment, and the contact portion 451 includes two first contact tabs and two second contact tabs disposed at intervals, of course, the structures of the inserting portion 451 and the second inserting portion are concave-convex structures that are matched with each other, and the specific structures are not limited to the above-described structures.

In addition, when the circuit breaker includes three L poles, one N pole and the earth leakage protection module, one of the L poles and one of the N poles may be assembled together in a first housing 11 adjacent to the earth leakage protection module, and at this time, the earth leakage protection module, the L poles and the N poles adopt the connection manner of the three embodiments; or, three L poles and one N pole are respectively assembled in the four first housings 11, one of the lead-out conductive members 45 may pass through the adjacent first housings 11, so that the two lead-out conductive members 45 finally extend side by side to the middle of the same side wall of the same first housing 11, and the leakage protection module may adopt the structures of the above three embodiments.

It should be noted that, in the description of the present invention, the terms "upper", "lower", "left", "right", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship that is usually placed when used, and are only for convenience of description, but do not indicate that the device or element that is referred to must have a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish one description from another, and are not to be construed as indicating relative importance.

The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments shown and described. To the utility model discloses to the ordinary skilled person in technical field's the prerequisite that does not deviate from the utility model discloses under the design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.

Claims (11)

1. A circuit breaker, comprising a housing and at least one breaker pole (2) arranged in the housing, each breaker pole (2) comprising at least one phase main line, characterized in that: a first wiring port (111) is formed in the side wall of the shell, at least one phase main line is connected with a leading-out conductive piece (45), and the leading-out conductive piece (45) is provided with a plug part (451);

the patch part (451) is provided with a slot therein and is arranged opposite to the first wiring port (111), and/or at least one patch part (451) passes through the first wiring port (111) and extends out of the shell.

2. The circuit breaker of claim 1, wherein: the circuit breaker pole (2) at least comprises a phase L phase main line and a phase N main line, wherein the phase N main line and the phase L phase main line are respectively connected with a leading-out conductive piece (45), and two first wiring ports (111) which are arranged side by side are arranged on the side wall of one side of the shell.

3. The circuit breaker of claim 2, wherein: the side wall of the shell provided with the first wiring port (111) comprises a first cover body (13) and a second cover body (14) which are spliced with each other, wherein one first wiring port (111) is positioned at the splicing position of the first cover body (13) and the second cover body (14).

4. The circuit breaker of claim 1, wherein: the circuit breaker pole (2) comprises an N-pole static contact (232), and a static contact plate of the N-pole static contact (232) is connected with a leading-out conductive piece (45).

5. The circuit breaker of claim 1, wherein: at least one circuit breaker pole (2) comprises a short-circuit protection mechanism, on which an extraction conductor (45) is connected.

6. The circuit breaker of claim 5, wherein: the short-circuit protection mechanism comprises a coil assembly, a first terminal (251) of a coil (25) of the coil assembly is used as an outgoing conductive piece (45), and a plug part (451) is a conductive area of which the first terminal (251) penetrates through a first wiring port (111) and extends out of a shell.

7. The circuit breaker of claim 5, wherein: the short-circuit protection mechanism comprises a coil assembly, a connecting plate is connected to a first terminal (251) of a coil (25) of the coil assembly and serves as a leading-out conductive piece (45), and a plug-in portion (451) is arranged at one end, far away from the first terminal (251), of the connecting plate.

8. The circuit breaker of claim 1, 2, 3, 4, or 7, wherein: the connecting part (451) comprises a first contact piece and a second contact piece, one end of the second contact piece is bent and connected with the first contact piece, and the other end of the second contact piece is arranged at a distance from the first contact piece, so that a slot is formed between the first contact piece and the second contact piece.

9. The circuit breaker of claim 1, wherein: the L-pole short-circuit protection device comprises two circuit breaker poles (2), wherein one circuit breaker pole (2) is an L pole, the L pole comprises an L-pole incoming line terminal (41-1 a), an L-pole contact mechanism and a short-circuit protection mechanism, the L-pole contact mechanism comprises an L-pole moving contact and an L-pole static contact (231), the L-pole moving contact is electrically connected with the L-pole incoming line terminal (41-1 a), the L-pole static contact (231) is connected with a second terminal of a coil (25) of the short-circuit protection mechanism, a first terminal (251) of the coil (25) is connected with a connecting plate, the connecting plate serves as a leading-out conductive piece (45), and a plug portion (451) is arranged at one end, close to the L-pole static contact (231), of the connecting plate.

10. The circuit breaker of claim 9, wherein: one of two circuit breaker utmost point (2) is the N utmost point, the N utmost point includes N utmost point incoming line terminal (41-2 a) and N utmost point contact mechanism, and N utmost point contact mechanism includes N utmost point moving contact and N utmost point static contact (232), N utmost point moving contact is connected with N utmost point incoming line terminal (41-2 a) electricity, is connected with another at the stationary contact plate of N utmost point static contact (232) and draws electrically conductive piece (45), and L utmost point and N utmost point draw electrically conductive piece (45) and set up side by side and extend to same direction.

11. The circuit breaker of claim 1, wherein: the circuit breaker pole (2) is only provided with an incoming line terminal or an outgoing line terminal, and an insulating part (112) is arranged in the middle of the side wall of the shell in a protruding mode and corresponds to the position of the first wiring port (111).

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