CN218414443U - Electric leakage tripping mechanism, electric leakage protection module and circuit breaker - Google Patents

Abstract

A leakage tripping mechanism and a leakage protection module and a circuit breaker using the same comprise a shell, a tripper, an elastic indicating piece and a push plate, wherein the push plate is connected with an ejector rod of the tripper, the push plate comprises a second hasp part and a matching part, the second hasp part can be locked with a first hasp part hasp of the elastic indicating piece, the matching part is used for matching with an operating mechanism of the circuit breaker, when a leakage fault occurs, the push plate is driven to rotate by the ejector rod of the tripper, the matching part is used for triggering the operating mechanism to trip, and the first hasp part and the second hasp part are unlocked to enable the elastic indicating piece to slide along a direction far away from the push plate so as to indicate leakage; after the electric leakage fault is relieved, the elastic indicating piece is pressed to slide towards the direction close to the push plate, so that the first buckle part and the second buckle part are locked in a buckle mode, and the elastic indicating piece indicates that electric leakage does not occur. The utility model discloses the push pedal can be connected in advance with the ejector pin in production and assembling process, and convenient assembly also makes electric leakage tripping device can form a modularization whole simultaneously.

Description

Electric leakage tripping mechanism, electric leakage protection module and circuit breaker

Technical Field

The utility model relates to a low-voltage apparatus field, concretely relates to electric leakage tripping device, earth leakage protection module and circuit breaker.

Background

Low-voltage circuit breakers can be used to distribute electrical energy and to protect lines and power supply equipment from overloads and short circuits, and also as a means of infrequent switching of lines and for infrequent starting of motors. Possess earth leakage protection function usually in current circuit breaker, but traditional pin-connected panel earth leakage circuit breaker's mechanism is more complicated, and its electric leakage release and push rod adopt the mode that sets up of components of a whole that can function independently structure, and this kind of component of a whole that can function independently structure is comparatively loaded down with trivial details in the assembling process, is unfavorable for the automatic assembly of earth leakage circuit breaker in process of production.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art's defect, provide a simple structure, reliability height and assemble convenient electric leakage tripping device, earth leakage protection module and circuit breaker.

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

a leakage tripping mechanism comprises a shell and a tripper assembled in the shell, wherein a button hole is formed in the side wall of the shell opposite to an ejector rod of the tripper, an elastic indicating piece is assembled in the button hole in a sliding mode, a push plate is assembled between the elastic indicating piece and the ejector rod in a rotating mode and connected with the ejector rod, the push plate comprises a second hasp portion and a matching portion, the second hasp portion can be locked with a first hasp portion of the elastic indicating piece in a hasp mode, the matching portion is used for being matched with an operating mechanism of a circuit breaker,

when an electric leakage fault occurs, the push plate is driven to rotate by the ejector rod of the tripper, the matching part is used for triggering the operating mechanism to trip, and the first buckle part and the second buckle part are unlocked to enable the elastic indicating piece to slide along the direction far away from the push plate so as to indicate electric leakage;

after the electric leakage fault is relieved, the elastic indicating piece is pressed to slide towards the direction close to the push plate, so that the first hasp portion and the second hasp portion are locked in a hasp mode, and the elastic indicating piece indicates that electric leakage does not occur.

Preferably, the push plate is provided with a clamping groove, and a clamping boss clamped with the end part of the ejector rod is arranged in the clamping groove.

Preferably, the release is positioned below the button hole, and the central axis of the ejector rod is parallel to the central axis of the button hole.

Preferably, the push pedal includes the push pedal body, and the one end protrusion of push pedal body forms connecting portion, and the outside protrusion of the other end of push pedal body extends and forms cooperation portion, connecting portion parallel with the central axis of cooperation portion, offer the groove structure as second hasp portion at the push pedal body terminal surface that is equipped with connecting portion, and the draw-in groove has been seted up to the push pedal body between connecting portion and cooperation portion, the opening of draw-in groove is equipped with the block boss towards the ejector pin of release at least in the protrusion of one side lateral wall of draw-in groove, leaves the clearance of joint ejector pin between the tank bottom wall of block boss and draw-in groove.

Preferably, the elastic indicating piece comprises a button piece, one end of the button piece is used as a pressing portion of the button piece, the other end of the button piece is provided with a locking portion protruding outwards, the locking portion comprises a first hasp portion matched with a second hasp portion and a limiting portion used for limiting the sliding stroke of the button piece, an accommodating groove is formed in the middle of the button piece, a button spring is assembled in the accommodating groove in a limiting mode, and after the first hasp portion and the second hasp portion are unlocked, the elastic indicating piece is driven by the button spring to slide in the direction away from the push plate.

Preferably, when an electric leakage fault occurs, the first buckle part and the second buckle part are unlocked and then abutted, and a balance structure matched with each other is formed among the elastic indicating piece, the push plate and the release; when the electric leakage fault is relieved, the elastic indicating piece is pressed, the first hasp part and the second hasp part are locked in a hasp mode again, and the push plate resets along with the resetting of the ejector rod of the tripper.

The utility model also provides an earth leakage protection module, include as before electric leakage tripping device and electric leakage detection circuit, when taking place the electric leakage trouble, by the action of electric leakage detection circuit drive release.

Preferably, the electric leakage detection circuit includes zero sequence transformer and circuit board one side of circuit board is equipped with the arc depressed area, and zero sequence transformer corresponds to set up in the arc depressed area and is connected with the circuit board, is equipped with the installation breach at the middle part of circuit board, and the release is connected with the circuit board and is corresponded the assembly in the installation breach, and the ejector pin of release stretches out and corresponds the below that is located the push pedal from the installation breach.

Preferably, still include a binding post and lug, binding post sets up the one end at the earth leakage protection module, and the circuit board sets up the other end at the earth leakage protection module, and zero sequence transformer sets up between binding post and circuit board, the one end and the binding post of lug are connected, and the other end of lug passes zero sequence transformer's centre bore and extends to outside the earth leakage protection module from the lateral wall of earth leakage protection module.

The utility model also provides a circuit breaker, including shell and at least one circuit breaker utmost point one side cooperation of circuit breaker utmost point is provided with as before earth leakage protection module.

The utility model discloses an electric leakage tripping device and applied this electric leakage tripping device's earth leakage protection module and circuit breaker, its push pedal is connected with the ejector pin of tripper, drive the push pedal by the ejector pin and rotate and carry out the earth leakage protection or make the push pedal reset, the cooperation degree of tripper and push pedal has been improved, the push pedal can be connected with the ejector pin in advance in production and assembling process, the convenient assembly, and simultaneously, push pedal and elastic indicator hasp cooperation and push pedal are connected with the tripper, it is whole to make electric leakage tripping device can form a modularization.

In addition, the push plate is provided with a clamping groove and a clamping boss, the structure is simple, the assembly is convenient, and the stable matching of the push plate and the release can be ensured.

In addition, the leakage protection module is compact in layout, an arc-shaped concave area is formed in one side of the circuit board corresponding to the zero sequence transformer, an installation notch is formed in the middle top side of the circuit board corresponding to the release, the ejector rods of the release are correspondingly located below the push plate, and the whole layout structure is compact.

Drawings

Fig. 1 is a top view of a circuit breaker pole of the present invention;

fig. 2 is a schematic structural diagram of a breaker pole (on the side where the socket is provided) in the present invention;

fig. 3 is a schematic structural diagram of the middle leakage protection module of the present invention (on the side where the connector is provided);

fig. 4 is a top view of the middle earth leakage protection module of the present invention;

fig. 5 is a schematic structural diagram of the middle leakage protection module of the present invention (when a leakage fault occurs);

fig. 6 is a schematic structural diagram of the middle leakage protection module of the present invention (when no leakage fault occurs);

fig. 7 is a schematic diagram of the cooperation of the trip unit, the push plate and the elastic indicator according to the present invention;

fig. 8 is a schematic structural view of the middle push plate of the present invention;

fig. 9 is a schematic structural view of the elastic indicator of the present invention.

Detailed Description

The following further describes a specific implementation manner of the leakage tripping mechanism, the leakage protection module and the circuit breaker according to the present invention with reference to the embodiments shown in fig. 1 to 9. The utility model discloses a electric leakage tripping device, earth leakage protection module and circuit breaker are not limited to the description of following embodiment.

A leakage tripping mechanism comprises a shell 1 and a tripper 5 assembled in the shell 1, wherein a button hole is formed in the side wall of the shell 1 opposite to a push rod 51 of the tripper 5, an elastic indicating piece 2 is assembled in the button hole in a sliding mode, a push plate 3 is assembled between the elastic indicating piece 2 and the push rod 51 in a rotating mode, the push plate 3 is connected with the push rod 51, the push plate 3 comprises a second buckle part 34 and a matching part 32, the second buckle part 34 can be locked with a first buckle part 211 of the elastic indicating piece 2 in a buckling mode, the matching part 32 is used for matching with an operating mechanism of a circuit breaker, when a leakage fault occurs, the push plate 3 is driven to rotate by the push rod 51 of the tripper 5, the matching part 32 is used for triggering the operating mechanism to trip, and the first buckle part 211 and the second buckle part 34 are unlocked to enable the elastic indicating piece 2 to slide in the direction far away from the push plate 3 to indicate leakage; after the leakage failure is released, the elastic indicator 2 is pushed and slid in a direction approaching the push plate 3, the first and second snap portions 211 and 34 are snap-locked, and the elastic indicator 2 indicates that no leakage occurs.

The utility model discloses an electric leakage tripping device and applied this electric leakage tripping device's earth leakage protection module and circuit breaker, its push pedal 3 is connected with release 5's ejector pin 51, it rotates to carry out earth leakage protection or makes push pedal 3 reset to drive push pedal 3 by ejector pin 51, the cooperation degree of release 5 with push pedal 3 has been improved, push pedal 3 can be connected in advance with ejector pin 51 in production and assembling process, convenient assembly, and simultaneously, push pedal 3 and the cooperation of 2 hasp of elasticity indicator and push pedal 3 and release 5's being connected, it is whole to make electric leakage tripping device can form a modularization, be favorable to realizing automatic assembly.

An embodiment of a circuit breaker is provided with reference to fig. 1 to 9, where the circuit breaker includes a housing 1, at least one circuit breaker pole a is disposed in the housing 1, preferably, the housing 1 includes at least one installation cavity, each circuit breaker pole a is correspondingly assembled in one installation cavity, when a plurality of installation cavities are disposed in the housing 1, the housing 1 may include a plurality of partition boards 1a fixedly disposed inside the housing 1, and the installation cavity is formed by an interval between two adjacent partition boards 1a, or the housing 1 includes an upper cover, a base, and a partition board 1a assembled between the upper cover and the base, where the upper cover and one partition board 1a are covered to form one installation cavity, the base and another partition board 1a form another installation cavity, and the other partition boards 1a respectively form a plurality of independent installation cavities in pairs, and the two adjacent installation cavities are spliced together through the partition boards 1 a.

A phase main line is arranged in each breaker pole a, that is, an N-pole main line or a phase L-pole main line is arranged in each breaker pole a, and certainly, it is also possible to simultaneously arrange an L-pole main line and an N-phase main line in the same breaker pole a.

The circuit breaker pole A comprises a pair of wiring terminals 91 connected to a phase main line, and a handle mechanism, an operating mechanism and a contact mechanism which are sequentially connected in a linkage manner, wherein the pair of wiring terminals 91 comprises an incoming line terminal and an outgoing line terminal, the contact mechanism comprises a moving contact and a static contact which are matched with each other, the moving contact is connected with the operating mechanism in a linkage manner, the static contact is fixedly assembled on one side opposite to the moving contact, the operating mechanism is driven by manually operating the handle mechanism, and the moving contact is separated from or contacted with the static contact so as to realize on-off control of the main line in the circuit breaker pole A. In addition, each circuit breaker pole A is also provided with an arc extinguishing system and a short-circuit protection mechanism and/or an overload protection mechanism which are matched with the operating mechanism, the arc extinguishing system is arranged on one side of the contact mechanism in a matching mode and is used for extinguishing electric arcs generated by the moving contact and the static contact in the opening and closing processes, and the short-circuit protection mechanism or the overload protection mechanism triggers the operating mechanism to trip when a main circuit is in short circuit or overload fault.

The circuit breaker pole A comprises a pair of wiring terminals 91, wherein the wiring terminals 91 serving as incoming line terminals and the circuit breaker pole A are located in the same installation cavity, the handle mechanism is rotatably assembled on the upper portion of the shell 1, the operating mechanism is arranged on one side of the handle mechanism, the handle mechanism is in linkage connection with the operating mechanism through a connecting rod, the moving contact is connected to the lower portion of the operating mechanism, an arc extinguish chamber and a fixed contact of an arc extinguishing system are fixed to the middle portion of the shell 1, the fixed contact is opposite to the moving contact, the short-circuit protection mechanism is arranged between the handle mechanism and the arc extinguish chamber, one end of the short-circuit protection mechanism is opposite to the operating mechanism, the overload protection mechanism and the short-circuit protection mechanism are respectively arranged on two sides of the operating mechanism, and one end of the overload protection mechanism is matched with the operating mechanism.

In this embodiment, the operating mechanism includes a lever rotatably assembled in the housing 1, the lever may be rotatably connected to a side wall of the housing 1 or a partition board 1a in the housing 1, a jumper and a latch are rotatably assembled on the lever, the moving contact is rotatably mounted through a contact support and is linked with the lever, the jumper is snap-fitted to one end of the latch, the other end of the jumper is linked with the connecting rod, the latch is provided with a linking portion 81 integrally having a rod-shaped structure, an avoiding hole 11 is provided in the partition board 1a or the side wall of the housing 1 corresponding to the linking portion 81, one end of the linking portion 81 may pass through the avoiding hole 11 and extend into an adjacent mounting cavity, and of course, other actuating mechanisms of the circuit breaker pass through the avoiding hole 11 and are linked with the linking portion 81 in a matching manner; 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.

The main line of each breaker pole a is further connected with a wiring piece 92, wherein one end of the wiring piece 92 is connected with a wire inlet end, the other end of the wiring piece 92 is provided with a patch panel, a jack 12 is arranged on the side wall of one of the installation cavities, the patch panels of all the wiring pieces 92 extend to the same side and penetrate through the partition board 1a forming the installation cavity to correspondingly extend into the jack 12 one by one, in fig. 1 and 2, the patch panel protrudes out of the jack 12, and the patch panel can be kept flush with the edge of the jack 12.

An earth leakage protection module B is assembled in one installation cavity of the housing 1, as shown in fig. 3-7, preferably, the earth leakage protection module B is adjacent to the installation cavity provided with the socket 12, the terminal 91 of the breaker pole a is arranged at one end of the installation cavity provided with the earth leakage protection module B, that is, the terminal 91 serving as a wire outlet end is arranged at one end of the installation cavity, preferably, the wire inlet end and the wire outlet end of the breaker pole a are respectively located at two ends of the housing 1, it can be understood that the wire outlet ends of the L-pole main line and the N-pole main line are arranged in the installation cavity provided with the earth leakage protection module B, the wire inlet ends of the L-pole main line and the N-pole main line are arranged in the breaker pole a, one lug 93 is connected to each wire outlet end, the side wall of the installation cavity is provided with the connectors 13, preferably, the connectors 13 are in one-to-one correspondence with the sockets 12, so that the connectors can extend into and mate with the lugs 93 from the connectors 13, of course, the lugs 93 can also extend out from the sockets 13 and can be plugged into the sockets 12, thereby assembling the earth leakage protection module B and the breaker pole a.

As shown in fig. 5 and 6, the leakage protection module B includes a leakage detection circuit and a leakage tripping mechanism, the leakage tripping mechanism includes a release 5 driven by the leakage detection circuit, when the leakage detection circuit detects a leakage fault, the push rod 51 of the release 5 can be driven to operate, and after the push rod 51 finishes operating, the push rod 51 is driven to reset by the reset spring of the release 5.

In this implementation, the leakage detection circuit includes a zero sequence transformer 7 and a circuit board 6, the zero sequence transformer 7 is connected with the circuit board 6 and is arranged on one side of the circuit board 6, the zero sequence transformer 7 in fig. 5 and 6 is arranged between the circuit board 6 and a wire outlet end, and the middle part of the lug 93 passes through a threading hole of the zero sequence transformer 7, so that the zero sequence transformer 7 can detect whether a main circuit has a leakage fault, and certainly, a conductor connected with the lug 93 can pass through the zero sequence transformer 7; only be equipped with a binding post 91 in the earth leakage protection module promptly to carry out another way electricity through lug 93 and connect, binding post 91 sets up the one end at the earth leakage protection module, and circuit board 6 sets up the other end at the earth leakage protection module, and zero sequence transformer 7 sets up between binding post 91 and circuit board 6, the one end and the binding post 91 of lug 93 are connected, and the other end of lug 93 passes zero sequence transformer 7's centre bore and extends to outside the earth leakage protection module B from earth leakage protection module B's lateral wall. 6 laminating baffles 1a of circuit board sets up, be provided with the arc depressed area in the left side of circuit board 6, zero sequence transformer 7 corresponds and sets up in the arc depressed area, be provided with installation breach 61 at the middle part of circuit board 6, release 5 connected with circuit board 6 corresponds the assembly in installation breach 61, fig. 5, the below that is located the button hole that installation breach 61 corresponds in 6, installation breach 61's opening direction is up, release 5's ejector pin 51 stretches out from installation breach 61, make release 5's ejector pin 51's the central axis parallel with the central axis of button hole, that is exactly, ejector pin 51 moves along vertical direction in the below of button hole, whole overall arrangement compact structure, and do benefit to automatic assembly.

As shown in fig. 5-7, the leakage tripping mechanism further includes an elastic indicator 2 and a push plate 3, wherein a mounting cavity provided with the leakage tripping mechanism is provided with a button hole opposite to the push rod 51 of the tripping device 5, wherein the button hole is arranged at the upper part of the housing 1, the elastic indicator 2 is slidably assembled in the button hole, the push plate 3 is rotatably assembled between the elastic indicator 2 and the push rod 51, the push plate 3 is linked with the push rod 51, so that the push plate 3 is driven by the push rod 51 to rotate or reset, the push plate 3 includes a second snap-fit portion 34 and a fitting portion 32, the second snap-fit portion 34 can be locked with the first snap-fit portion 211 of the elastic indicator 2 by a snap-fit, preferably, the second snap-fit portion 34 and the first snap-fit portion 211 can be unlocked first and then abut against each other, the fitting portion 32 is used for fitting with the operating mechanism of the circuit breaker, that is, that the fitting portion 32 (see fig. 4) passes through the avoiding hole 11 and is linked with the linking portion 81, when a leakage fault occurs, the push plate 3 is driven to rotate by the push rod 51 of the tripping mechanism 5, the fitting portion 32 and the operating mechanism are matched with the snap-fit portion 32 of the operating mechanism, so that the second snap-fit portion 34 and the elastic indicator moves away from the second snap-fit portion along the direction of the leakage indicating mechanism so that the second snap-fit portion 3; when the leakage fault is relieved, the elastic indicator 2 is pressed to slide towards the direction close to the push plate 3, so that the first buckle part 211 and the second buckle part 34 are locked in a buckle mode, at the moment, the push plate 3 and the release 5 reset, and the elastic indicator 2 indicates that the leakage does not occur.

Preferably, when an electric leakage fault occurs, the push plate 3 is driven to rotate by the ejector rod 51 of the release 5, the matching part 32 is matched with the lock catch of the operating mechanism to enable the operating mechanism to be released, the first buckle part 211 and the second buckle part 34 are firstly unlocked and then abutted, after the unlocking, the elastic indicating piece 2 slides along the direction far away from the push plate 3 to indicate the electric leakage, and at the moment, a mutually matched balance structure is formed among the elastic indicating piece 2, the push plate 3 and the release 5, namely, the elastic indicating piece 2 is kept in an electric leakage indicating state, the push plate 3 and the ejector rod 51 of the release 5 cannot be reset, and the balance structure can prevent the circuit breaker from being switched on under the electric leakage fault state; when the leakage fault is relieved, the elastic indicator 2 is pressed to slide towards the direction close to the push plate 3, the first buckle part 211 and the second buckle part 34 are in buckle locking again, namely, the state of the first buckle part is changed into the buckle locking state again from the abutting state, at the moment, along with the balance among the elastic indicator 2, the push plate 3 and the ejector rod 51 of the release 5 is broken, the push plate 3 resets along with the resetting of the ejector rod 51 of the release 5, namely, the reset spring of the release 5 drives the push plate 3 to reset when driving the ejector rod 51 to reset, and the elastic indicator 2 indicates that the leakage does not occur.

Preferably, the push plate 3 is provided with a clamping groove 35, a clamping boss 351 clamped with the end part of the ejector rod 51 is arranged in the clamping groove 35, after the ejector rod 51 of the release 5 acts, the ejector rod 51 is driven to reset by a reset spring of the release 5, and meanwhile, the push plate 3 clamped with the ejector rod 51 is also driven to reset.

The specific structure of the push plate 3 in this embodiment is provided with reference to fig. 5-8, where the push plate 3 includes a push plate body, the push plate body is integrally in a step-like structure with a higher end and a lower end, one end of the push plate body protrudes to form a connecting portion 31, that is, the connecting portion 31 is disposed at the higher end of the push plate body, the connecting portion 31 is a cylindrical boss perpendicular to the side wall of the partition board 1a or the housing 1, correspondingly, a groove or a connecting hole matched with the connecting portion 31 is disposed on the inner side wall of the partition board 1a or the housing 1, the other end of the push plate body protrudes outward to extend to form a matching portion 32, the connecting portion 31 is parallel to the central axis of the matching portion 32, a groove structure serving as a second snap portion 34 is disposed on the end face of the push plate body provided with the connecting portion 31, when the first snap portion 211 is snapped into the groove structure, the first snap portion 211 is snap-locked with the second snap portion 34, move out from groove structure at first hasp portion 211, first hasp portion 211 offsets with one side of groove structure, that is the upside of groove structure in the picture offsets, the butt of first hasp portion 211 and second hasp portion 34 makes elasticity indicator 2, push pedal 3 and release 5 ejector pin 51 keep at balanced state this moment, draw-in groove 35 has been seted up to the push pedal body between connecting portion 31 and cooperation portion 32, draw-in groove 35 sets up the downside in the middle part of the push pedal body in fig. 8, the opening of draw-in groove 35 is towards release 5's ejector pin 51, at least one side lateral wall protrusion at draw-in groove 35 is equipped with block boss 351, will stretch into the ejector pin 51 joint in draw-in groove 35 by block boss 351, block boss 351 is the column arch that sets up in the lateral wall of draw-in groove 35 in fig. 8, the column arch is relative with the tank bottom wall of draw-in groove 35 and leaves the clearance that supplies ejector pin 51 tip card to go into. In addition, a protrusion 33 may be further disposed on the push plate body, and the protrusion 33 may cooperate with the elastic indicator 2 to achieve positioning, and in fig. 8, the protrusion 33 is a boss structure that is convexly disposed in the middle of the push plate body.

The specific structure of the elastic indicator 2 in this embodiment is provided with reference to fig. 5, 6 and 9, where the elastic indicator 2 includes a button 21, one end of the button 21 is used as a pressing portion of the button 21, an accommodating groove 213 is provided in the middle of the button 21, a button spring 22 is assembled in the accommodating groove 213, the accommodating groove 213 is communicated with the outside, a driving hole communicated with the accommodating groove 213 is preferably provided, a boss or other structure provided in the housing 1 is used as a driving portion, the driving portion cooperates with the button 21 through the driving hole to deform the button spring 22, after an electrical leakage fault occurs, the elastic indicator 2 and the push plate 3 are unlocked, the button 21 is driven by the button spring 22 to slide in a direction away from the push plate 3, that is, the button is made to bounce out of the button hole, preferably, one end of the accommodating groove 213 is provided with a through hole 217, and when no electrical leakage fault occurs, the through hole 217 can cooperate with the protruding portion 33 of the push plate 3 to locate the pressing portion; the other end of the button 21 is provided with a locking portion protruding outwards, the locking portion comprises a first buckle portion 211 matched with a second buckle portion 34 and a limiting portion 212 used for limiting the sliding stroke of the button 21, in fig. 9, the locking portion is integrally a T-shaped boss, the T-shaped boss comprises a first connecting arm and a second connecting arm which are perpendicular to each other, the first connecting arm is formed by outwards protruding and extending one side wall of one end, away from the pressing portion, of a containing groove 213, one end of the first connecting arm is connected with the middle of the second connecting arm, the end portion, opposite to the containing groove 213, of the second connecting arm forms a blunt circular first buckle portion 211, the blunt circular first buckle portion 211 is in sliding fit with the second buckle portion 34 and is beneficial to achieving switching between buckle locking and mutual abutting, the limiting portion 212 is formed by the end face of the other end of the first connecting arm, and when an electric leakage occurs, the button spring 22 drives the button 21 to slide and bounce outwards along the button hole, the limiting portion 212 and the edge of the button hole limit prevent the button 21 from falling off.

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 belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of 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 (10)

1. The utility model provides a leakage tripping device, includes shell (1) and assembly tripper (5) in shell (1), its characterized in that: the side wall of the shell (1) opposite to a top rod (51) of the release (5) is provided with a button hole, an elastic indicating piece (2) is arranged in the button hole in a sliding mode, a push plate (3) is arranged between the elastic indicating piece (2) and the top rod (51) in a rotating mode, the push plate (3) is connected with the top rod (51), the push plate (3) comprises a second buckle part (34) and a matching part (32), the second buckle part (34) can be locked with a first buckle part (211) of the elastic indicating piece (2) in a buckling mode, and the matching part (32) is used for being matched with an operating mechanism of the circuit breaker,

when an electric leakage fault occurs, the push plate (3) is driven to rotate by a mandril (51) of the tripper (5), the matching part (32) is used for triggering the operating mechanism to trip, and the first buckle part (211) and the second buckle part (34) are unlocked to enable the elastic indicating piece (2) to slide along the direction far away from the push plate (3) so as to indicate the electric leakage;

after the leakage fault is relieved, the elastic indicator (2) is pressed to slide towards the direction close to the push plate (3), so that the first buckle part (211) and the second buckle part (34) are locked in a buckle mode, and the elastic indicator (2) indicates that the leakage does not occur.

2. The electrical leakage trip mechanism of claim 1, wherein: the push plate (3) is provided with a clamping groove (35), and a clamping boss (351) clamped with the end part of the ejector rod (51) is arranged in the clamping groove (35).

3. A leakage trip mechanism according to claim 1, wherein: the release (5) is positioned below the button hole, and the central axis of the ejector rod (51) is parallel to the central axis of the button hole.

4. The electrical leakage trip mechanism of claim 1, wherein: push pedal (3) are including the push pedal body, and the one end protrusion of push pedal body forms connecting portion (31), and the outside protrusion of the other end of push pedal body extends and forms cooperation portion (32), connecting portion (31) parallel with the central axis of cooperation portion (32), offers the groove structure who buckles portion (34) as the second at the push pedal body terminal surface that is equipped with connecting portion (31), and draw-in groove (35) have been seted up to the push pedal body between connecting portion (31) and cooperation portion (32), the opening of draw-in groove (35) is equipped with block boss (351) towards ejector pin (51) of release (5) at least in the protrusion of one side lateral wall of draw-in groove (35), leaves the clearance of joint ejector pin (51) between the tank bottom wall of block boss (351) and draw-in groove (35).

5. The electrical leakage trip mechanism of claim 1, wherein: the elastic indicating piece (2) comprises a button piece (21), one end of the button piece (21) serves as a pressing portion of the button piece (21), the other end of the button piece (21) is provided with a locking portion protruding outwards, the locking portion comprises a first buckle portion (211) matched with a second buckle portion (34) and a limiting portion (212) used for limiting the sliding stroke of the button piece (21), an accommodating groove (213) is formed in the middle of the button piece (21), a button spring (22) is arranged in the accommodating groove (213) in a limiting mode, and after the first buckle portion (211) and the second buckle portion (34) are unlocked, the elastic indicating piece (2) is driven by the button spring (22) to slide along the direction far away from the push plate (3).

6. The electrical leakage trip mechanism of claim 1, wherein: when an electric leakage fault occurs, the first buckle part (211) and the second buckle part (34) are unlocked and then abutted, and a balance structure matched with each other is formed among the elastic indicating piece (2), the push plate (3) and the release (5); when the leakage fault is relieved, the elastic indicator (2) is pressed, the first buckle part (211) and the second buckle part (34) are locked in a buckle mode again, and the push plate (3) resets along with the resetting of the ejector rod (51) of the release (5).

7. An earth leakage protection module, comprising: comprising the electrical leakage tripping mechanism and the electrical leakage detection circuit according to any of the claims 1-6, wherein the electrical leakage detection circuit drives the tripping device (5) to act when an electrical leakage fault occurs.

8. A residual current protection module according to claim 7, characterized in that: the electric leakage detection circuit comprises a zero sequence transformer (7) and a circuit board (6), wherein an arc-shaped depressed area is arranged on one side of the circuit board (6), the zero sequence transformer (7) is correspondingly arranged in the arc-shaped depressed area and connected with the circuit board (6), an installation notch is arranged at the middle part of the circuit board (6), a release (5) is connected with the circuit board (6) and correspondingly assembled in the installation notch (61), and an ejector rod (51) of the release (5) stretches out from the installation notch (61) and correspondingly positioned below the push plate (3).

9. A residual current protection module according to claim 8, characterized in that: still include a binding post (91) and lug (93), binding post (91) sets up the one end at the earth leakage protection module, and circuit board (6) set up the other end at the earth leakage protection module, and zero sequence transformer (7) set up between binding post (91) and circuit board (6), the one end and binding post (91) of lug (93) are connected, and the other end of lug (93) passes the centre bore of zero sequence transformer (7) and extends to outside earth leakage protection module (B) from the lateral wall of earth leakage protection module (B).

10. A circuit breaker comprising a casing (1) and at least one breaker pole (a), characterized in that: -providing a residual current module (B) according to any of claims 7-9 in cooperation on one side of said circuit breaker pole (a).

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