CN113889379A - Residual current circuit breaker - Google Patents

Abstract

The utility model provides an electric leakage circuit breaker, includes L looks utmost point module, N looks utmost point module, coincidence gate pole module and electric leakage protection module, electric leakage protection module dispersion sets up in N looks utmost point module and coincidence gate pole module, is equipped with the test button return circuit at electric leakage protection module, the break-make of test button return circuit is controlled by the test button that sets up at coincidence gate pole module, is equipped with the pilot lamp on the circuit board of coincidence gate pole module, the pilot lamp is including wearing to establish the test button on the coincidence gate pole module and setting up the inside light emitting component at coincidence gate pole module, the test button sets up near light emitting component, the test button derives the outside operating condition that is used for showing the circuit breaker of coincidence gate pole module as the light guide post with light emitting component's operating condition. The test button is also used as the light guide column structure of the indicator light, so that the indicator light cannot pop up when the test button is pressed, and the size of the circuit breaker is favorably reduced.

Description

Residual current circuit breaker

Technical Field

The invention relates to a circuit breaker, in particular to an electric leakage circuit breaker.

Background

The leakage circuit breaker is mainly used for protecting electrical appliances to prevent personal electric shock and electrical fire when the circuit or electrical appliance is damaged and has short circuit to the ground. The existing leakage circuit breaker is provided with a test device for generating the simulated leakage action, but the test device occupies a larger space in the circuit breaker, is not beneficial to the miniaturization design of products, and has the defects of unreliable contact and the like. In addition, the existing residual current circuit breaker is also provided with a residual current indicating device, and two buttons are usually arranged on the circuit breaker, wherein one button is a residual current testing button, and the other button is a residual current indicating button; the traditional electric leakage indicating button adopts a mechanical interlocking device, when the circuit breaker trips because of an electric leakage fault, an indicating piece acts to indicate the electric leakage tripping of the circuit breaker, and the mode that the indicating piece and a test button are independently arranged is not beneficial to the miniaturization of the circuit breaker.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides the residual current circuit breaker with simple structure and high reliability.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides an electric leakage circuit breaker, includes L looks utmost point module, N looks utmost point module, coincidence gate pole module and electric leakage protection module, electric leakage protection module dispersion sets up in N looks utmost point module and coincidence gate pole module, is equipped with the test button return circuit at electric leakage protection module, the break-make in test button return circuit is controlled by the test button that sets up at coincidence gate pole module be equipped with the pilot lamp on the circuit board of coincidence gate pole module, the pilot lamp is including wearing to establish the test button on the coincidence gate pole module and setting up the inside light emitting component at coincidence gate pole module, the test button sets up near light emitting component, the test button derives the outside operating condition that is used for showing the circuit breaker of coincidence gate pole module as the leaded light post with light emitting component's operating condition.

Further, the light-emitting element is a light-emitting diode, the light-emitting diode is arranged at the position, close to the test button, of the circuit board, and the test button is a semitransparent part made of a PC material.

Furthermore, the leakage protection module comprises a zero sequence transformer, a leakage release and a test button loop, wherein the zero sequence transformer and the leakage release are arranged in the N-phase pole module, the test button loop is arranged in the superposed gate module, and the leakage release and the test button loop are connected to a circuit board of the superposed gate module;

after the zero sequence transformer detects the leakage current, a controller on a circuit board of the coincident gate module drives a leakage release to act so as to open the circuit breaker;

or when the test button loop is conducted, the zero sequence transformer detects the simulated leakage current generated by the test button loop, and the controller of the circuit board of the superposed gate module drives the leakage tripping device to act and open the circuit breaker.

Furthermore, the on-off of the test button loop is controlled by a microswitch which is arranged on a circuit board of the coincidence gate module, and the electric leakage test button is arranged on the coincidence gate module and is used for being matched with the microswitch to enable the test button loop to be on or off.

Furthermore, the coincidence gate module includes coincidence gate module shell, the test button wears to establish the upper portion at coincidence gate module shell, the test button has two and presses the portion, and one of them presses the portion as first and presses the portion and slide through setting up a mounting groove on coincidence gate module shell and wear to establish, and another presses the portion as the second and presses the micro-gap switch that the portion is used for pressing the circuit board and be located the inside of coincidence gate module shell.

Further, be provided with limit structure of mutually supporting between test button and the coincidence gate pole module shell, limit structure is used for restricting the test button and stretches out the stroke of coincidence gate pole module shell, limit structure is including setting up at the inside first spacing boss of coincidence gate pole module shell and the spacing boss of second of setting on test button, first spacing boss is relative with first splenium of pressing, and the protruding setting of the spacing boss of second is used for with the spacing cooperation of inner wall of coincidence gate pole module shell in one side of test button.

Furthermore, a return spring is arranged between the first limiting boss and the first pressing part.

Furthermore, the reclosing module comprises a reclosing module shell, a driving handle, a gear transmission device, a tripping driving structure, a motor, a circuit board and a test button are arranged inside the reclosing module shell, the circuit board is arranged inside the reclosing module shell, the driving handle, the gear transmission device and the motor are arranged on the surface of the circuit board, the driving handle and the test button are respectively arranged on two sides of the upper part of the reclosing module shell, the motor is arranged on the lower part of the reclosing module, the gear transmission device is arranged in the middle of the reclosing module shell, one end of the gear transmission device is in transmission connection with the motor, and the other end of the gear transmission device is connected with the driving handle through a driving connecting rod; the tripping driving structure is arranged on one side of the gear transmission device facing the circuit board, and the tripping driving structure comprises a driving boss arranged on the gear transmission device and a tripping driving piece rotatably arranged on the superposed gate module shell.

Further, coincidence gate module still is provided with change over switch, change over switch is located between drive handle and the test button, and the change over switch drive is used for setting up the circuit breaker module into manual mode or automatic mode, change over switch includes toggle switch and push pedal, toggle switch sets up on the circuit board, the push pedal sets up and is used for promoting toggle switch on toggle switch's surface to be equipped with the opening corresponding with the push pedal and be used for promoting the push pedal at coincidence gate module.

Furthermore, the N-phase pole module comprises an N-phase pole module shell, and an N-pole handle structure, an N-pole operating mechanism, an N-pole contact mechanism and a pair of N-pole wiring terminals are arranged in the N-phase pole module shell; the pair of N-pole wiring terminals are respectively arranged on two sides of the N-phase pole module shell and respectively used as an N-pole wiring terminal and an N-pole wiring terminal, the N-pole handle structure and the N-pole operating mechanism are arranged on the upper portion of the N-phase pole module shell, an N-pole moving contact in the N-pole contact mechanism is connected to the N-pole operating mechanism, the N-pole moving contact is located in the middle of the N-phase pole module shell, and an N-pole static contact of the N-pole contact mechanism is fixedly arranged in the middle of the N-phase pole module shell and is opposite to the N-pole moving contact; and a zero sequence transformer and a leakage release are arranged between the N-pole outlet terminal and the N-pole static contact, and the leakage release is arranged between the zero sequence transformer and the N-pole handle structure.

According to the leakage circuit breaker, the superposed gate module is provided with the test button loop operated by the test button, the superposed gate module is provided with the indicator lamp for indicating the working state of the circuit breaker, the light-emitting element of the indicator lamp is arranged near the test button, the test button is used as the light guide column to guide the light of the light-emitting element out of the superposed gate module for displaying the working state of the circuit breaker, and the test button is also used as the light guide column structure of the indicator lamp.

In addition, the on-off of the test button loop is controlled by a microswitch which is arranged on the circuit board, and the test button realizes the on-off of the test button loop by pressing the microswitch, thereby being beneficial to reducing the volume of the circuit breaker; be provided with the limit structure of mutually supporting between test button and coincidence gate pole module shell, limit structure is used for restricting the test button and stretches out the stroke of coincidence gate pole module shell, under limit structure's effect, can avoid test button to pop out too much part when pressing test button.

Drawings

Fig. 1 is a schematic view of an earth leakage circuit breaker according to the present invention;

FIG. 2 is a cross-sectional view of FIG. 1;

fig. 3 is a schematic diagram of the internal structure of an earth leakage circuit breaker according to the present invention;

fig. 4 is a schematic structural diagram of an L-phase pole module of the residual current circuit breaker according to the present invention;

fig. 5 is a schematic structural diagram of an L-phase pole cover of an earth leakage circuit breaker according to the present invention;

fig. 6-7 are schematic structural views of an N-phase pole module of a residual current circuit breaker according to the present invention;

fig. 8 is a schematic structural view of an N-phase pole cover of a residual current circuit breaker according to the present invention;

FIG. 9 is a schematic diagram of a stacked gate module of the residual current circuit breaker according to the present invention;

FIG. 10 is an enlarged view of portion A of FIG. 9;

FIG. 11 is a schematic diagram of a stacked gate module of the residual current circuit breaker according to the present invention;

fig. 12 is a schematic structural diagram of a circuit board of the residual current circuit breaker according to the present invention.

Detailed Description

The following describes a specific embodiment of the residual current circuit breaker according to the present invention with reference to the embodiments shown in fig. 1 to 12. An earth leakage breaker of the present invention is not limited to the description of the following embodiments.

The utility model provides a residual current circuit breaker, as shown in fig. 1-3, includes L looks utmost point module 1, N looks utmost point module 2, coincidence gate pole module 3 and earth leakage protection module, N looks utmost point module 2 sets up between L looks utmost point module 1 and coincidence gate pole module 3, earth leakage protection module dispersion sets up in N looks utmost point module 2 and coincidence gate pole module 3, has shortened the length that earth leakage protection module and 3 wire of coincidence gate pole module are connected, has improved assembly welding efficiency, does benefit to whole miniaturized design. The L-phase pole module 1 comprises an L-pole handle structure 14, an L-pole operating mechanism 15 and an L-pole contact mechanism 16, the N-phase pole module 2 comprises an N-pole handle structure 24, an N-pole operating mechanism 25 and an N-pole contact mechanism 26, the coincidence gate module 3 comprises a driving handle 31, the driving handle 31 is linked with the L-pole handle structure 14 and the N-pole handle structure 24 through a handle linkage shaft, and the coincidence gate module 3 enables the L-phase pole module 1 and the N-phase pole module 2 to realize an automatic switching-on function under the action of the handle linkage shaft after receiving a switching-on action instruction. Of course, the L-phase module can be disposed between the N-phase module and the overlapped gate module, and the same function can be achieved.

As shown in fig. 3, 8-11, a driving handle 31, a circuit board 35, a gear transmission device 32, a trip driving structure and a motor 33 are installed in the overlapped gate module 3, the driving handle 31 is linked with the L-pole handle structure 14 and the N-pole handle structure 24, the L-pole operating mechanism 15 is linked with the N-pole operating mechanism 25 and linked with the trip driving structure, the driving handle 31 is drivingly connected with the gear transmission device 32 through a driving link 34, a closing operation signal is received by a controller of the circuit board 35, the motor 33 and the gear transmission device 32 rotate and drive the driving link 34 to rotate, the driving link 34 rotates the driving handle 31, the driving handle 31 drives the L-pole handle structure 14 and the N-pole handle structure 24 to rotate and make the L-pole operating mechanism 15 and the N-pole operating mechanism 25 operate to realize automatic closing, and a separating operation signal is received by the controller of the circuit board 35, the motor 33 and the gear transmission device 32 synchronously operate the L-pole operating mechanism 15 and the N-pole operating mechanism 25 through a tripping driving structure to realize automatic brake opening.

The earth leakage protection module realizes automatic separating brake function through coincidence gate module 3 after the earth leakage protection module detects the leakage signal, the earth leakage protection module makes the circuit breaker separating brake through coincidence gate module 3, the earth leakage protection module still includes test button return circuit, and when test button return circuit switched on, the earth leakage protection module also can drive the circuit breaker separating brake through coincidence gate module 3.

As shown in fig. 6, 9, and 10, the leakage protection module includes a zero sequence transformer 41, a leakage release 42, and a test button loop, the zero sequence transformer 41 and the leakage release 42 are disposed in the N-phase module 2, the test button loop is disposed in the coincidence gate module 3, the leakage release 42 and the test button loop are connected to the circuit board 35 of the coincidence gate module 3, the on and off of the test button loop are controlled by a micro switch 44, the micro switch 44 is disposed on the circuit board 35 of the coincidence gate module 3, the coincidence gate module 3 is provided with a test button 43, and the test button 43 is used for cooperating with the micro switch 44 to make the test button loop on or off. After the zero sequence transformer 41 detects the leakage current, the controller of the circuit board 35 of the coincident gate module 3 drives the leakage release 42 to operate to open the circuit breaker; when the test button loop is conducted, the zero sequence transformer 41 detects the simulated leakage current generated by the test button loop, and the controller of the circuit board 35 of the superposition gate module 3 drives the leakage release 42 to act and open the circuit breaker.

An improvement point of the application lies in that, do not set up the bimetallic component that is used for realizing overload protection in L looks utmost point module 1, but whether take place the overload in confirming the main line of circuit breaker through setting up a current transformer 19 and gathering current signal, current transformer 19 is connected the current signal who is used for feeding back the main line with circuit board 35 of coincidence gate module 3, and the controller on the circuit board 35 can feed back the power consumption condition of main line to the user side, when the overcurrent takes place for the circuit breaker main line, current transformer 19 feeds back main line current size signal to the controller of circuit board 45, the controller judges that the back that appears overloading, the controller of circuit board 35 drives coincidence gate module 3 action in the stipulated time and realizes the automatic separating brake of circuit breaker, the controller sets up control module, control module is used for judging whether current transformer feedback current is overload current and controls motor 3 of coincidence gate module 3, preferably, the control module of the controller can trigger the reclosing gate module 3 to act within a specified time according to a set program, and the overload protection has higher stability and accuracy compared with the existing bimetal component. The controller of the coincidence gate module 3 may be a microprocessor MCU, or a control circuit formed by electronic components, preferably a microprocessor MCU.

As shown in fig. 4 and 5, the L-phase pole module 1 includes a pair of an L-pole incoming terminal 12 and an L-pole outgoing terminal 13 disposed at two sides of the L-phase pole module 1, an L-pole handle structure 14 and an L-pole operating mechanism 15 are disposed between the L-pole incoming terminal 12 and the L-pole outgoing terminal 13, an L-pole moving contact of an L-pole contact mechanism 16 is connected to the L-pole operating mechanism 15, a current transformer 19 is disposed between the L-pole moving contact and the L-pole incoming terminal 12, a connecting wire 1a connected between the L-pole moving contact and the L-pole incoming terminal 12 passes through the current transformer 19, and the current transformer 19 is connected to a circuit board 35 of the superposition gate module 3 and is used for feeding back a current signal of a main line to a controller of the circuit board 35.

As shown in fig. 4, the L-phase pole module 1 includes an L-phase pole module housing, a pair of L-pole connection terminals, an L-pole operating mechanism 15, an L-pole contact mechanism 16, a short-circuit protection mechanism 17, an arc extinguish chamber 18 and a current transformer 19 are disposed inside the L-phase pole module housing, the pair of L-pole connection terminals are disposed on two sides of the L-phase pole module 1 respectively as an L-pole wire inlet terminal 12 and an L-pole wire outlet terminal 13, the L-pole operating mechanism 15 is disposed on an upper portion inside the L-phase pole module housing and is located between the L-pole wire inlet terminal 12 and the L-pole wire outlet terminal 13, the short-circuit protection mechanism 17 and the arc extinguish chamber 18 are disposed on one side of the L-pole operating mechanism 15, the arc extinguish chamber 18 is located below the short-circuit protection mechanism 17, the L-pole contact mechanism 16 is disposed on one side of the arc extinguish chamber 18, wherein an L-pole fixed contact of the L-pole contact mechanism 16 is fixed on one side of the arc extinguish chamber 18, an L-pole moving contact in the L-pole contact mechanism 16 is connected to the L-pole operating mechanism 15, the L-pole moving contact and an L-pole static contact are arranged oppositely, a current transformer 19 is arranged on the other side of the L-pole moving contact, a connecting wire 1a connected between the L-pole moving contact and an L-pole wire inlet terminal 12 penetrates through the current transformer 19, the current transformer 19 is connected with a circuit board 35 of the coincident gate module 3 through a wire, a first arc striking plate 1b is arranged below the current transformer 19, one end of the first arc striking plate 1b is connected with the L-pole wire inlet terminal 12 through a wire, and the other end of the first arc striking plate 1b extends into the arc extinguish chamber 18.

The L-pole operating mechanism 15 comprises a support, a lever, a jump buckle, a lock catch and a contact support, wherein the support is rotatably arranged in the L-pole module shell, the jump buckle and the lock catch are rotatably arranged on the support, the contact support is connected to the support, one end of the lever is connected with the L-pole handle structure 141, the other end of the lever is connected with the jump buckle, the jump buckle is connected with an end arm hasp of the lock catch, one end of the contact support is connected with an L-pole moving contact of the L-pole contact mechanism 16, and the L-pole moving contact is arranged opposite to an L-pole static contact fixedly arranged in the L-pole module shell; one side of the other end arm of the lock catch is arranged opposite to an electromagnetic release in the short-circuit protection mechanism 17, an assembly hole is formed in the middle of the lock catch, an L-pole lock catch linkage shaft 151 is installed in the assembly hole, and the L-pole lock catch linkage shaft 151 connects the L-pole operating mechanism 15 with an N-pole lock catch linkage 251 of the N-pole operating mechanism 25.

The short-circuit protection mechanism 17 comprises an electromagnetic release, the electromagnetic release comprises an electromagnetic coil, one end of the electromagnetic coil is provided with a firing pin, the firing pin is opposite to one end arm of the lock catch, when a main line is short-circuited, the firing pin moves to enable the lock catch to rotate, the lock catch is connected with a buckle of the jump buckle to be unlocked, and the breaker module is switched off.

As shown in fig. 4 and 5, an arc isolating structure is disposed in the middle of the L-phase pole module housing, the arc isolating structure includes a first partition 111 and a plurality of second partitions 112, the first partition 111 is disposed between the L-pole moving contact and the current transformer 19, and is used for preventing an arc or high-temperature gas from flowing into a space where the current transformer 19 is located and preventing the arc or high-temperature gas from affecting the current transformer 19; a plurality of second baffle 112 intervals encircle to set up and form not confined buffer chamber 113, buffer chamber 113 is located between L utmost point outgoing line terminal 13 and explosion chamber 18, and the second baffle 112 explosion chamber 18 exhaust electric arc that a plurality of intervals set up is cut into the multistage, and wherein partial electric arc flows into and is used for cooling electric arc tail gas in buffer chamber 113, prefers buffer chamber 113 that a plurality of second baffle 112 intervals set up and form has a plurality of electric arc tail gas's entry, in fig. 4, 5, buffer chamber 113 has two entries, and one of them entry is relative with explosion chamber 18, and the electric arc tail gas that does benefit to explosion chamber 18 exhaust smoothly flows into buffer chamber 113 in by the cold district buffering, and another entry is corresponding with the exhaust hole of L looks utmost point module shell.

Preferably, the L-phase pole module casing is composed of an L-phase pole cover 11b and an L-phase pole base 11a, wherein the L-phase pole cover 11b and the L-phase pole base 11a are both provided with a first partition plate 111, the L-phase pole cover 11b and the L-phase pole base 11a are both provided with a plurality of second partition plates 112, when the L-phase pole cover 11b and the L-phase pole base 11a are covered to form the L-phase pole module casing, the first partition plates 111 arranged on the L-phase pole cover 11b and the L-phase pole base 11a are butted to block electric arcs or high-temperature gas, and the plurality of second partition plates 112 arranged on the L-phase pole cover 11b and the L-phase pole base 11a are butted to form a buffer cavity. Of course, the first and second separators 111, 112 may be provided only on the L-phase pole base 11a, and the L-phase pole cover 11b may be fitted on the L-phase pole base 11a, with the first and second separators 111, 112 contacting the L-phase pole cover 11 b. It should be noted that at least two through holes are formed in the L-phase pole cover 11b, one of the through holes is used for the L-pole lock catch linkage shaft 151 to pass through, and the other through hole is used for realizing linkage of the L-pole handle structure 14 and the N-pole handle structure 24.

As shown in fig. 3, 6, and 7, the N-phase pole module 2 includes an N-phase pole module case, and an N-pole handle structure 24, an N-pole operating mechanism 25, an N-pole contact mechanism 26, and a pair of N-pole connection terminals are provided inside the N-phase pole module case, and the structures and the installation positions of the four are the same as those of the L-pole handle structure 14, the L-pole operating mechanism 15, the L-pole contact mechanism 16, and the L-pole connection terminals in the L-phase pole module 1.

As shown in fig. 6 and 7, the N-pole handle structure 24 is linked with the L-pole handle structure 14, the N-pole operating mechanism 25 is the same as the L-pole operating mechanism 15 and is linked by an L-pole latch linkage shaft 151 disposed on the L-pole operating mechanism 15, an N-pole latch linkage shaft 251 in the N-pole operating mechanism 25 is used for cooperating with a trip driving structure in the overlapping gate module 3, the trip driving structure pushes the N-pole latch linkage shaft 251 of the N-pole operating mechanism 25 to rotate, and the L-pole operating mechanism 15 and the N-pole operating mechanism 25 are tripped synchronously under the linkage action of the L-pole latch linkage shaft 151 of the L-pole operating mechanism 15, so as to realize synchronous opening of the L-pole module 1 and the N-pole module 2.

The pair of N-pole connecting terminals are respectively arranged on two sides of the N-pole module shell, one of the N-pole connecting terminals serves as an N-pole outgoing line terminal 23, the other N-pole connecting terminal serves as an N-pole incoming line terminal 22, the N-pole handle structure 24 and the N-pole operating mechanism 25 are arranged on the upper portion of the N-pole module shell, an N-pole moving contact in the N-pole contact mechanism 26 is connected to the N-pole operating mechanism 25 and is connected with the N-pole incoming line terminal 22 through a conducting wire, the N-pole moving contact is located in the middle of the N-pole module shell, an N-pole static contact of the N-pole contact mechanism 26 is fixedly arranged in the middle of the N-pole module shell and is opposite to the N-pole moving contact, and the N-pole static contact is connected with the N-pole outgoing line terminal 23 through a conducting wire; a second arc ignition plate 2b is further arranged in the N-phase pole module shell, and one end of the second arc ignition plate 2b is connected with the N-pole wire inlet terminal 22 through a lead.

A zero sequence transformer 41 and a leakage release 42 of the leakage protection module are arranged in the N-phase pole module 2, the zero sequence transformer 41 and the leakage release 42 are arranged between the N-pole outlet terminal 23 and the N-pole stationary contact, the main loop conductor of the L-phase pole module 1 and the main loop conductor of the N-phase pole module 2 need to pass through the zero sequence transformer 41, the zero sequence transformer 41 and the leakage release 42 are connected with the circuit board 35 in the coincidence gate module 3 through conducting wires, the leakage release 42 is arranged between the zero sequence transformer 41 and the N-pole handle structure 24, the release iron core of the leakage release 42 is opposite to the lock catch of the N-pole operating mechanism 25, the locking and tripping unlocking of the N-pole operating mechanism 25 can be triggered when the tripping iron core of the leakage tripper 42 acts, meanwhile, synchronous brake opening is realized under the linkage action of the N-pole operating mechanism 25 and the L-pole operating mechanism 15; the leakage tripping device 42 is preferably covered with a magnetic yoke 421, and the magnetic yoke 421 covers the leakage tripping device 42 to enhance the electromagnetic force of the leakage tripping device 42, so that the leakage tripping device 42 can be miniaturized or can still reliably operate at a low voltage (e.g. 12V).

As shown in fig. 6 and 7, a third partition 211 is further disposed in the N-phase pole module housing, and the third partition 211 is disposed between the N-pole moving contact and the N-pole incoming line terminal 22, and is used for preventing arc back spray occurring during a breaking process of the N-pole contact mechanism 26; preferably, an arc extinguishing chamber 212a is provided between the third partition 211 and the zero sequence transformer 41, one end of the second arc striking plate 2b extends into the arc extinguishing chamber 212a, an arc running channel 212b is provided at the end of the arc extinguishing chamber 212a, the arc running channel 212b is connected to an exhaust hole provided at one side of the N-phase pole module housing, the arc extinguishing chamber 212a includes a first chamber wall 212 and a second chamber wall 213, the first chamber wall 212 is located at the middle of the N-phase pole module housing, the head end of the first chamber wall 212 is located at the middle of the N-phase pole module housing, the middle of the first chamber wall 212 is provided around one side of the zero sequence transformer 41, a gap is left between the portion of the first chamber wall 212 near the tail end and the inner wall of the N-phase pole module housing as the arc running channel 212b, the tail end of the first chamber wall 212 is opposite to the exhaust hole of the N-phase pole module housing, the wall 213 of the second chamber wall is connected to the head end of the third partition 211, the end of the second chamber wall 213 is connected to the inner wall of the N-phase module housing side provided with the exhaust hole.

Preferably, the N-phase module housing is composed of an N-phase pole cover 21b and an N-phase pole base 21a, third partition plates 211 are respectively disposed on the N-phase pole cover 21b and the N-phase pole base 21a, first chamber walls 212 and second chamber walls 213 are respectively disposed on the N-phase pole cover 21b and the N-phase pole base 21a, when the N-phase pole cover 21b and the N-phase pole base 21a are closed to form the N-phase module housing, the third partition plates 211 disposed on the N-phase pole cover 21b and the N-phase pole base 21a are butted to form a structure for preventing reverse spraying of an arc, and the first chamber walls 212 and the second chamber walls 213 disposed on the L-phase pole cover 11b and the L-phase pole base 11a are butted to form an arc extinguishing chamber 212 a. Of course, the third partition 211, the first chamber wall 212, and the second chamber wall 213 may be disposed only on the N-phase pole base 21a, and the third partition 211, the first chamber wall 212, and the second chamber wall 213 may contact the N-phase pole cover 21b when the N-phase pole cover 21b covers the N-phase pole base 21 a. The N-phase electrode cap 21b is provided with a through hole for linking the N-pole handle structure 24 with the driving handle 31 of the gate stack module 3.

As shown in fig. 3 and 9-12, the overlapping gate module 3 includes an overlapping gate module casing, a driving handle 31, a gear transmission 32, a trip driving structure, a motor 33, a circuit board 35 and a test button 43 (the circuit board 35 may be specifically shown in fig. 12) are disposed inside the overlapping gate module casing, the circuit board 35 is disposed inside the overlapping gate module casing, and the circuit board 35 is respectively connected to the L-pole incoming line terminal 12 and the N-pole incoming line terminal 22, and is used for controlling power supply taking of the circuit board 35 or temperature rise data feedback of the incoming line terminal; the driving handle 31, the gear transmission device 32 and the motor 33 are arranged on the surface of the circuit board 35 in a stacked manner, the driving handle 31 and the test button 43 are respectively arranged on two sides of the upper part of the reclosing module shell, the driving handle 31 and the gear transmission device 32 are matched and rotated through a driving connecting rod 34, the gear transmission device 32 is in transmission connection with the motor 33, the motor 33 drives the driving connecting rod 34 through the gear transmission device 32 to drive the driving handle 31 to realize automatic closing, the motor 33 is driven to rotate after a controller of the circuit board 35 receives a closing action signal, and the gear transmission device 32 and the driving connecting rod 34 are matched with each other to enable the L-pole operating mechanism 15 and the N-pole operating mechanism 25 to act to realize automatic closing; the tripping driving structure is arranged on one side of the gear transmission device 32 facing the circuit board 35, the controller of the circuit board 35 receives a tripping action signal and then drives the motor 33 to rotate, and the L-pole operating mechanism 15 and the N-pole operating mechanism 25 are tripped under the cooperation of the gear transmission device 32 and the tripping driving structure to realize automatic tripping; the test button 43 can be arranged on any side of the circuit and used for switching on and off a test button loop in the leakage protection module, the test button loop is conducted, and the zero sequence transformer 41 detects a leakage signal and triggers the opening of the circuit breaker through the leakage release 42.

The driving handle 31 is arranged at the upper part of the overlapped gate module 3, the motor 33 is arranged at the lower part of the overlapped gate module 3, the gear transmission device 32 is arranged at the middle part of the overlapped gate module shell, one end of the gear transmission device 32 is in transmission connection with the motor 33, the other end of the gear transmission device 32 is connected with the driving handle 31 through the driving connecting rod 34, a tripping driving structure is arranged at one side of the gear transmission device 32 facing the circuit board 35 and used for being matched with the N-pole locking linkage shaft 251 of the N-pole operating mechanism 25, and the tripping driving structure enables the N-pole module 2 and the L-pole module 1 to realize synchronous brake opening by pushing the N-pole locking linkage shaft 251 of the N-pole operating mechanism 25 to act under the linkage action.

As shown in fig. 11, the gear transmission device 32 includes three first gears 321, second gears 322 and third gears 323 sequentially engaged with each other, wherein the first gears 321 are engaged with the motor 33 through a worm, a side driving link 34 away from the circuit board 35 is disposed on the third gears 323, one end of the driving link 34 is connected to one side of the third gears 323 as a connecting end, the other end of the driving link 34 is used as a driving end to cooperate with the third gears 323 for driving the driving handle 31 to rotate, a tripping driving structure is disposed on one side of the third gears 323 facing the circuit board 35, the tripping driving structure includes a tripping driving member 36 and a driving protrusion (not shown), one end of the tripping driving member 36 is rotatably mounted on the housing of the coincidence gate module, the other end of the tripping driving member 36 is disposed corresponding to the N-pole latch linkage shaft 251 of the N-pole operating mechanism 25, the driving protrusion is disposed on one side of the third gears 323 facing the circuit board 35 and rotates and trips the driving member 36 are in contact connection, so as to drive the tripping driving piece 36 to push the N-pole lock catch linkage shaft 251 of the N-pole operating mechanism 25, so that the lock catch and the jump catch in the N-pole operating mechanism 25 are unlocked, and the tripping action is completed. The tripping driving structure has the advantages of simple and reliable structure and convenience in resetting after tripping.

In an embodiment of the driving handle 31 and the gear transmission device 32 provided in conjunction with fig. 9-11, the driving handle 31 has a protruding grip portion 311, a track groove 371 is provided below the driving handle 31 for engaging with a driving end of the driving link 34, the driving link 34 slides along the track groove 371 as the third gear 323 performs the opening and closing rotation, and the driving end rotates the driving handle 31 by pushing the grip portion 311; when the motor 33 drives the gear transmission device 32 to perform closing rotation, the rotation direction of the third gear 323 is counterclockwise in fig. 11, at this time, the driving end of the driving link 34 slides from the inner end of the track groove 371 to the outer end of the track groove 371, the closing rotation of the driving handle 31 is realized by pushing the handle part 311 after the driving end contacts with the handle part 311, and the closing rotation direction of the driving handle 31 is clockwise; when the motor 33 drives the gear transmission device 32 to perform opening operation, the rotation direction of the third gear 323 in fig. 11 is clockwise, at this time, the gear transmission device 32 enables the tripping driving structure to drive the N-pole latch linkage shaft 251 of the N-pole operating mechanism 25 to operate, and enables the L-phase pole module 1 and the N-phase pole module 2 to synchronously complete tripping operation under the linkage action, at the same time, the gear transmission device 32 drives the driving end of the connecting rod 34 to slide from the outer end of the track groove 371 to the inner end of the track groove 371, and the handle 311 performs counterclockwise opening operation after the driving end removes the pushing action. It should be noted that an avoiding groove 352 for the driving protrusion of the third gear 323 to move is provided on the circuit board 35, and through holes for the respective latch linkage shafts to realize linkage and rotation are provided on the superposed gate module housing, the N-phase pole module housing, and the L-phase pole module housing.

Unlike the conventional position of the test button 43, the test button 43 of the present application is disposed on the stacked gate module 3 as shown in fig. 1, 2, and 9-11. The test button 43 is arranged on the upper part of the reclosing module 3 in a penetrating way and is positioned on one side opposite to the driving handle 31, a test button loop of the leakage protection module is connected with the circuit board 35, wherein a microswitch 44 for controlling the on-off of the test button loop is also arranged on the circuit board 35, and one end, extending into the reclosing module, of the test button 43 is used for pressing the microswitch 44 on the circuit board 35.

The test button 43 has two pressing portions, one of which is used as a first pressing portion and is slidably inserted through an installation groove formed in the housing of the stacked gate module, and the other of which is used as a second pressing portion and is used for pressing the microswitch 44 of the circuit board 35 to be located inside the housing of the stacked gate module. Preferably, a mutually matched limit structure is arranged between the test button 43 and the overlapped gate module shell, the limit structure is used for limiting the stroke of the test button 43 extending out of the overlapped gate module shell, and under the action of the limit structure, the test button 43 can be prevented from being ejected out of too many parts when the test button 43 is pressed.

As shown in fig. 2, 10 and 11, the limiting structure includes a first limiting boss 372 disposed inside the housing of the coincidence gate module and a second limiting boss 431 disposed on the test button 43, the first limiting boss 372 is opposite to the first pressing portion, preferably, a return spring 373 is disposed between the first limiting boss 372 and the first pressing portion, the second limiting boss 431 is protrudingly disposed on one side of the test button 43 for limiting and matching with the inner wall of the housing of the coincidence gate module, the structure for limiting and matching with the second limiting boss 431 can be a raised structure, a recessed structure or other structures capable of realizing limiting and matching, in this application, the limiting and matching is realized by the shape of the housing of the coincidence gate module and the second limiting boss 431, the upper side wall of the housing of the coincidence gate module is outwardly protrudingly disposed, so that the housing of the coincidence gate module is in a "convex" shape as a whole, the last lateral wall of coincidence gate module 3 is the step face that high both sides are low in the middle of, coincidence gate module shell comprises base 37 and upper cover 38 base 37 sets up first spacing boss 372, sets up reset spring 373 between first spacing boss 372 and the first pressure portion, experimental button 43 wears to establish the upper portion at the base, and the spacing boss 431 of preferred second sets up in one side that the second pressed the portion, and the spacing boss 431 of second is used for restricting the stroke that experimental button 43 stretches out coincidence gate module shell with the step face looks block of upper cover 38, and this kind of first spacing boss 372 and be used for setting up the structure at base 37 and experimental button 43 respectively with the spacing complex structure of the spacing boss 431 of second, makes things convenient for experimental button 43's installation. Of course, the second limit protrusion 431 may be disposed at other positions of the test button 43, and the second limit protrusion 431 may also be used to limit the moving stroke of the test button 43 in cooperation with other structures of the housing of the overlapping gate module.

The superposition gate module 3 is provided with an indicator light which is used for displaying the working state of the circuit breaker. The indicator lamp comprises a test button 43 arranged on the superposed gate module 3 in a penetrating way and a light-emitting element 351 (see fig. 10) arranged inside the superposed gate module 3, the test button 43 is arranged near the light-emitting element 351, and the test button 43 is used as a light guide column for guiding the working state of the light-emitting element 351 out of the superposed gate module 3 for displaying the working state of the circuit breaker. This kind of test button 43 is the structure of leaded light post concurrently, compares in putting test button 43 with the pilot lamp, when pressing test button 43, and the pilot lamp can not pop out, and this kind of structure does benefit to the volume that reduces the circuit breaker moreover, can avoid seting up too much mounting hole on the circuit breaker simultaneously.

Preferably, the light emitting element 351 of the indicator light is a light emitting diode and the test button 43 is a translucent part of PC material, although other translucent materials may be used to fabricate the test button 43. The leds are disposed on the circuit board 35 near the testing button 43, in fig. 10, the testing button 43 transmits the light emitting condition of the leds to the outside of the coincidence gate module 3 for indicating the state of the circuit breaker, preferably, different colors or different brightness or flashing frequency of the leds are used for displaying different states of the circuit breaker, that is, the indicator light can indicate the circuit breaker is in a normal working state, a leakage state, an overload state, a short circuit or an over/under voltage state, and can also display an under charge or a normal charge state, of course, the number of the light emitting elements 351 may be multiple, and respectively corresponds to different working states of the circuit breaker.

As shown in fig. 1 and 9, the reclosing module 3 is further provided with a switch 39, the switch 39 is located between the driving handle 31 and the test button 43, the switch 39 is driven to set the breaker module to a manual mode or an automatic mode, and a product cannot be automatically closed in the manual mode and needs to be manually closed. The switch 39 comprises a toggle switch 391 and a push plate 392, the toggle switch 391 is arranged on the circuit board 35, the push plate 392 is arranged on the surface of the toggle switch 391 for pushing the toggle switch 391, preferably, the push plate 392 is arranged between the toggle switch 391 and the housing of the coincidence gate module and can slide between the toggle switch 391 and the coincidence gate module, the housing of the coincidence gate module is provided with an opening corresponding to the push plate 392 for pushing the push plate 392, and the manual mode or the automatic mode is switched by pushing the push plate 392. The toggle switch 391 is connected to the power supply circuit of the motor 33, or the control circuit of the automatic opening control circuit, or connected to the controller in the coincidence gate module 3 as a parameter signal

The foregoing is a more detailed description of the invention in connection with specific preferred embodiments and it is not intended that the invention be limited to these specific details. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.

Claims (10)

1. The utility model provides a residual current circuit breaker, includes L looks utmost point module (1), N looks utmost point module (2), coincidence gate pole module (3) and earth leakage protection module, its characterized in that: the leakage protection module is dispersedly arranged in the N-phase pole module (2) and the superposition gate pole module (3), a test button loop is arranged on the leakage protection module, the on-off of the test button loop is controlled by a test button (43) arranged on the superposition gate pole module (3), an indicator lamp is arranged on a circuit board (35) of the superposition gate pole module (3), the indicator lamp comprises a test button (43) arranged on the superposition gate pole module (3) in a penetrating mode and a light-emitting element (351) arranged inside the superposition gate pole module (3), the test button (43) is arranged near the light-emitting element (351), and the test button (43) is used as a light guide column to guide the working state of the light-emitting element (351) out of the superposition gate pole module (3) and used for displaying the working state of the circuit breaker.

2. A residual current circuit breaker as claimed in claim 1, characterized in that: the light-emitting element (351) is a light-emitting diode which is arranged at the position of the circuit board (35) close to the test button (43), and the test button (43) is a semitransparent part made of PC materials.

3. A residual current circuit breaker as claimed in claim 1, characterized in that: the leakage protection module comprises a zero sequence transformer (41), a leakage release (42) and a test button loop, wherein the zero sequence transformer (41) and the leakage release (42) are arranged in the N-phase pole module (2), the test button loop is arranged in the superposed gate module (3), and the leakage release (42) and the test button loop are connected to a circuit board (35) of the superposed gate module (3);

after the zero sequence transformer (41) detects the leakage current, a controller on a circuit board (35) of the superposition gate module (3) drives a leakage release (42) to act so as to open the circuit breaker;

or when the test button loop is conducted, the zero sequence transformer (41) detects the simulated leakage current generated by the test button loop, and the controller of the circuit board (35) of the superposed gate module (3) drives the leakage release (42) to act and open the circuit breaker.

4. A residual current circuit breaker as claimed in any one of claims 1-3, characterized in that: the on-off of the test button loop is controlled by a microswitch (44), the microswitch (44) is arranged on a circuit board (35) of the coincidence gate module (3), and the electric leakage test button (43) is arranged on the coincidence gate module (3) and is used for being matched with the microswitch (44) to enable the test button loop to be on or off.

5. A residual current circuit breaker as claimed in claim 4, characterized in that: the coincidence gate module (3) comprises a coincidence gate module shell, the test button (43) is arranged on the upper portion of the coincidence gate module shell in a penetrating mode, the test button (43) is provided with two pressing portions, one of the pressing portions serves as a first pressing portion and is arranged in a sliding penetrating mode through an installation groove formed in the coincidence gate module shell, and the other pressing portion serves as a second pressing portion and is used for pressing a microswitch (44) of a circuit board (35) to be located inside the coincidence gate module shell.

6. A residual current circuit breaker as claimed in claim 5, characterized in that: be provided with limit structure of mutually supporting between experimental button (43) and the coincidence gate pole module shell, limit structure is used for restricting experimental button (43) and stretches out the stroke of coincidence gate pole module shell, limit structure is including setting up first spacing boss (372) inside the coincidence gate pole module shell and second spacing boss (431) of setting on experimental button (43), first spacing boss (372) are relative with first pressing portion, and the protruding setting of second spacing boss (431) is used for with the spacing cooperation of inner wall of coincidence gate pole module shell in one side of experimental button (43).

7. A residual current circuit breaker as claimed in claim 6, characterized in that: and a return spring (373) is arranged between the first limiting boss (372) and the first pressing part.

8. A residual current circuit breaker as claimed in claim 1, characterized in that: the superposition gate module (3) comprises a superposition gate module shell, a driving handle (31), a gear transmission device (32), a tripping driving structure, a motor (33), a circuit board (35) and a test button (43) are arranged in the superposition gate module shell, the circuit board (35) is arranged inside the superposed gate module shell, the driving handle (31), the gear transmission device (32) and the motor (33) are arranged on the surface of the circuit board (35), the driving handle (31) and the test button (43) are respectively arranged on two sides of the upper part of the reclosing module shell, the motor (33) is arranged on the lower part of the reclosing gate module (3), the gear transmission device (32) is arranged in the middle of the reclosing gate module shell, one end of the gear transmission device (32) is in transmission connection with the motor (33), and the other end of the gear transmission device (32) is connected with the driving handle (31) through the driving connecting rod (34); the tripping driving structure is arranged on one side of the gear transmission device (32) facing the circuit board, and the tripping driving structure comprises a driving boss arranged on the gear transmission device (32) and a tripping driving piece (36) rotatably arranged on the superposition gate module shell.

9. A residual current circuit breaker as claimed in claim 8, characterized in that: the reclosing gate module (3) is further provided with a switch (39), the switch (39) is located between the driving handle (31) and the test button (43), the switch (39) is driven to be used for setting the breaker module to be in a manual mode or an automatic mode, the switch (39) comprises a toggle switch (391) and a push plate (392), the toggle switch (391) is arranged on the circuit board (35), the push plate (392) is arranged on the surface of the toggle switch (391) and used for pushing the toggle switch (391), and the reclosing gate module (3) is provided with an opening corresponding to the push plate (392) and used for pushing the push plate (392).

10. A residual current circuit breaker as claimed in claim 3, characterized in that: the N-phase pole module (2) comprises an N-phase pole module shell, and an N-pole handle structure (24), an N-pole operating mechanism (25), an N-pole contact mechanism (26) and a pair of N-pole wiring terminals are arranged in the N-phase pole module shell; the pair of N-pole wiring terminals are respectively arranged on two sides of the N-phase pole module shell and respectively used as an N-pole wiring terminal (22) and an N-pole wiring terminal (23), the N-pole handle structure (24) and the N-pole operating mechanism (25) are arranged on the upper portion of the N-phase pole module shell, an N-pole moving contact in the N-pole contact mechanism (26) is connected to the N-pole operating mechanism (25), the N-pole moving contact is located in the middle of the N-phase pole module shell, and an N-pole static contact of the N-pole contact mechanism (26) is fixedly arranged in the middle of the N-phase pole module shell and is opposite to the N-pole moving contact; and a zero sequence transformer (41) and an electric leakage release (42) are arranged between the N-pole outlet terminal (23) and the N-pole static contact, and the electric leakage release (42) is arranged between the zero sequence transformer (41) and the N-pole handle structure (24).

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