CN216902769U

CN216902769U - Electric leakage mechanism and circuit breaker

Info

Publication number: CN216902769U
Application number: CN202220605878.8U
Authority: CN
Inventors: 徐江宁; 张慎虎; 陈鸣; 肖涵
Original assignee: Ningbo Gongniu Low Voltage Electric Co Ltd
Current assignee: Ningbo Gongniu Low Voltage Electric Co Ltd
Priority date: 2022-03-18
Filing date: 2022-03-18
Publication date: 2022-07-05
Anticipated expiration: 2032-03-18

Abstract

The utility model relates to the technical field of electrical equipment, in particular to a leakage mechanism and a circuit breaker; the circuit breaker comprises an air-break mechanism and a leakage mechanism, wherein the leakage mechanism comprises a shell, a release and a connecting rod, and the release is arranged on the shell; the connecting rod is movably arranged in the shell, the first end of the connecting rod is in transmission fit with the release, and the second end of the connecting rod is used for being in transmission fit with the idle opening mechanism; the tripper is used for driving the first end of the connecting rod to move around the set axis, so that the second end of the connecting rod is pried, and the tripper can shift the idle opening mechanism. The leakage mechanism can solve the problem that a connecting rod is easy to block, and the problem that a tripper cannot reliably drive an idle opening mechanism to trip is solved.

Description

Electric leakage mechanism and circuit breaker

Technical Field

The utility model relates to the technical field of electrical equipment, in particular to a leakage mechanism and a circuit breaker.

Background

The terminal circuit breaker (such as MCB, RCBO and the like) is used as a necessity in a distribution box and is very important for the safety of electricity utilization; especially, the reliability of the leakage tripping function of the circuit breaker directly determines the personal safety problem of the power consumption of a user.

However, when the leakage mechanism provided by the related art is used, the problem of jamming is easily caused, so that the tripper cannot reliably drive the idle opening mechanism to trip.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a leakage mechanism and a circuit breaker, which can solve the problem of clamping stagnation and the problem that a release cannot reliably drive an idle opening mechanism to release.

The embodiment of the utility model is realized by the following steps:

in a first aspect, the present invention provides a leakage mechanism comprising:

a housing;

the release is arranged on the shell;

the connecting rod is movably arranged in the shell, the first end of the connecting rod is in transmission fit with the release, and the second end of the connecting rod is used for being in transmission fit with the idle opening mechanism; the tripper is used for driving the first end of the connecting rod to move around the set axis, so that the second end of the connecting rod is pried, and the tripper can shift the idle opening mechanism.

In an alternative embodiment, the connecting rod comprises a connecting part, a first arm and a second arm, the connecting part is movably arranged on the shell, one end of the first arm is connected with the connecting part, and the other end of the first arm is a first end of the connecting rod; one end of the second arm is connected with the connecting part, and the other end of the second arm is a second end of the connecting rod.

In an alternative embodiment, the connecting part comprises a fitting part and an extending part, the extending part is connected with the fitting part, and the fitting part is rotatably arranged on the shell; one end of the first arm is connected with the extending piece, one end of the second arm is connected with the assembly piece, and the other end of the first arm and the other end of the second arm are distributed on two sides of the extending piece in the length extending direction.

In an alternative embodiment, the length of the first arm is greater than the length of the second arm.

In an alternative embodiment, the first arm is an arcuate arm.

In an optional embodiment, the connecting rod further comprises a third arm, one end of the third arm is connected with the extending piece, and the other end of the first arm and the other end of the third arm are distributed on two sides of the extending piece in the length extending direction;

the electric leakage mechanism also comprises a reset button, the shell is provided with an outlet, and the reset button is movably arranged on the shell and can extend out of or retract back from the outlet; the third arm is abuttable to the reset button to lock the reset button in a position retracted from the outlet into the housing.

In an optional embodiment, the leakage mechanism further comprises a reset button, the housing is provided with an outlet, and the reset button is movably arranged in the housing and can extend out of or retract back from the outlet;

the tripper comprises a bracket and a push rod, the bracket is arranged on the shell, the push rod is movably arranged on the bracket, the push rod can stretch and retract relative to the bracket, and the push rod is in transmission fit with the first end of the connecting rod;

when the push rod extends relative to the bracket, the first end of the connecting rod can rotate around the set axis along a first direction, and the connecting rod is abutted with the reset button so as to lock the reset button at a position of retracting the reset button from the outlet to the shell; when the push rod retracts relative to the bracket, the first end of the connecting rod can rotate around the set axis along the second direction, and the connecting rod releases the position locking of the reset button so that the reset button can extend out of the shell from the outlet; wherein the first direction is opposite to the second direction.

In an alternative embodiment, the direction of movement of the push rod relative to the bracket extension and retraction is the same as the direction of movement of the reset button relative to the housing extension and retraction.

In an alternative embodiment, the leakage mechanism further comprises an elastic member, the elastic member is arranged between the housing and the reset button, and the elastic member has a movement tendency that the reset button always extends out of the housing from the outlet.

In a second aspect, the present invention provides a circuit breaker, comprising an idle opening mechanism and the leakage mechanism of any one of the preceding embodiments, wherein the second end of the connecting rod is in transmission fit with the idle opening mechanism.

The electric leakage mechanism of the embodiment of the utility model has the beneficial effects that: the leakage mechanism provided by the embodiment of the utility model comprises a shell, a release and a connecting rod, wherein the release is arranged on the shell; the connecting rod is movably arranged in the shell, the first end of the connecting rod is in transmission fit with the release, and the second end of the connecting rod is used for being in transmission fit with the idle opening mechanism; the tripper is used for driving the first end of the connecting rod to move around the set axis, so that the second end of the connecting rod is pried, and the tripper can shift the idle opening mechanism. Therefore, after the first end of the connecting rod is driven by the release, the second end of the connecting rod can be pried to enable the connecting rod to form a lever-like motion state, and further, the driving force is reliably transmitted to the second end of the connecting rod, so that the connecting rod which is in transmission fit with the idle opening mechanism can be reliably moved, the problem that the connecting rod is easy to clamp and block is solved, and the connecting rod can be reliably driven to release the idle opening mechanism.

The circuit breaker of the embodiment of the utility model has the beneficial effects that: the circuit breaker provided by the embodiment of the utility model comprises an idle opening mechanism and the electric leakage mechanism, wherein the second end of the connecting rod of the electric leakage mechanism is in transmission fit with the idle opening mechanism; the connecting rod driven by the tripper can form a lever-like motion state, so that the connecting rod in transmission fit with the idle opening mechanism is not easy to block, namely the connecting rod is ensured to move reliably, and the idle opening mechanism is driven to trip reliably.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

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

FIG. 2 is a schematic view of a partial structure of the leakage mechanism when the push rod is extended relative to the bracket according to the embodiment of the present invention;

FIG. 3 is a partial schematic view of the leakage mechanism when the plunger is retracted relative to the bracket according to the embodiment of the utility model;

FIG. 4 is a cross-sectional view taken along line A-A of FIG. 2;

FIG. 5 is a cross-sectional view taken along line B-B of FIG. 3;

FIG. 6 is a schematic structural diagram of a connecting rod according to an embodiment of the present invention.

Icon: 010-a circuit breaker; 100-air opening mechanism; 200-a leakage mechanism; 210-a housing; 211-an outlet; 212-a limit bump; 213-a rotating shaft; 214-an arc-shaped slot; 220-a release; 221-a scaffold; 222-a push rod; 223-an annular groove; 224-a first slot wall; 225-second slot wall; 230-a connecting rod; 240-a connecting portion; 241-a fitting; 242-an extension; 250-a first arm; 251-an elongated slot; 260-a second arm; 261-a link shaft; 270-a third arm; 280-a reset button; 281-accommodating grooves; 282-a first stop lug; 283-a second limit bulge; 284-reset button body; 290-elastic member.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", and the like refer to the orientation or positional relationship shown in the drawings, or the orientation or positional relationship which the utility model product is conventionally placed in use, and are only for convenience of describing the present invention and simplifying the description, but do not refer to or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should also be noted that, unless otherwise explicitly stated or limited, the terms "disposed" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present embodiment, unless otherwise specified, the term "first direction" is a direction of an arrow a in the drawing, and the term "second direction" is a direction of an arrow b in the drawing.

Referring to fig. 1, the present embodiment provides a circuit breaker 010, which includes an idle opening mechanism 100 and a leakage mechanism 200 disposed on the idle opening mechanism 100, wherein when a leakage occurs, the leakage mechanism 200 can drive the idle opening mechanism 100 to trip to cut off a line.

The opening mechanism 100 includes a fixed contact and a movable contact (both not shown in the figures), and the movable contact can be in contact with or separated from the fixed contact; when the moving contact is contacted with the fixed contact, the circuit is communicated; when the moving contact is separated from the fixed contact, the circuit is cut off. Further, when the tripping device 220 trips the idle opening mechanism 100, the movable contact is separated from the fixed contact, that is, the line is cut off.

The structure and the working principle of the air release mechanism 100 are similar to those of the related art, and are not described in detail herein; the leakage mechanism 200 will be described in detail below.

Referring to fig. 1-3, the leakage mechanism 200 includes a housing 210, a release 220 and a connecting rod 230, the housing 210 is assembled to the emptying mechanism 100, and the release 220 is disposed on the housing 210; the connecting rod 230 is movably arranged on the shell 210, the release 220 is in transmission fit with the connecting rod 230, and the connecting rod 230 is in transmission fit with the idle opening mechanism 100; so configured, the trip unit 220 can be used to drive the link 230 to move, so as to trip the mechanism 100 to trip, so as to cut off the line.

The structure and the working principle of the tripper 220 are similar to those of the related art, and the tripper comprises a coil, a spring, a bracket 221 and a push rod 222, wherein the bracket 221 is arranged on the shell 210, the coil is arranged on the bracket 221, the push rod 222 is movably arranged on the bracket 221, the push rod 222 can extend and retract relative to the bracket 221, the push rod 222 is in transmission fit with the connecting rod 230, and the spring is arranged between the push rod 222 and the bracket 221 and used for enabling the push rod 222 to have the movement tendency of extending out of the bracket 221 all the time; specifically, when the leakage occurs, the coil generates a magnetic field to attract the push rod 222, so that the push rod 222 retracts into the bracket 221 and drives the connecting rod 230 to move, so as to use the connecting rod 230 to toggle the idle opening mechanism 100 to cut off the circuit; when the leakage fault is eliminated, the magnetic field of the coil disappears, and the push rod 222 extends out of the bracket 221 under the elastic action of the spring and drives the connecting rod 230 to move, so that the connecting rod 230 is reset, and the idle opening mechanism 100 can be switched on.

It should be understood that in other embodiments, the spring has a tendency to make the push rod 222 always have a motion of retracting the bracket 221, when an electric leakage occurs, the coil generates a magnetic field to make the push rod 222 extend out of the bracket 221, and the push rod 222 drives the connecting rod 230 to move, so as to use the connecting rod 230 to toggle the idle opening mechanism 100 to cut off the line; when the leakage fault is eliminated, the magnetic field of the coil disappears, the push rod 222 retracts into the bracket 221 under the action of the spring and drives the connecting rod 230 to move, so that the connecting rod 230 is reset, and the idle opening mechanism 100 can be switched on.

Referring to fig. 2-5, the leakage mechanism 200 of the present embodiment further includes a reset button 280, the housing 210 is provided with an outlet 211, and the reset button 280 is movably disposed on the housing 210 and can extend out of or retract into the outlet 211; when the push rod 222 is extended relative to the bracket 221, the link 230 can rotate about the set axis in a first direction into abutment with the reset button 280 to lock the reset button 280 in a position to retract the housing 210 from the outlet 211; when the push rod 222 is retracted relative to the bracket 221, the link 230 can rotate about the set axis in a second direction opposite the first direction to unlock the reset button 280 such that the reset button 280 can extend out of the housing 210 from the outlet 211. When the reset button 280 extends out of the housing 210, the link 230 abuts against the reset button 280, the reset button 280 can block the link 230 from rotating around the set axis in the first direction, and only when the reset button 280 is pressed down by a user to retract the reset button 280 into the housing 210, the reset button 280 temporarily does not abut against the link 230, the push rod 222 extending out of the bracket 221 can be used for driving the link 230 to rotate around the set axis without being blocked by the reset button 280, namely, the link 230 can be reset without being blocked, and the successfully reset link 230 does not block the vacancy-opening mechanism 100 any more.

In other words, when the push rod 222 retracts into the bracket 221 and drives the connecting rod 230 to toggle the idle opening mechanism 100, so as to disconnect the idle opening mechanism 100, the reset button 280 is unlocked and can extend out of the housing 210 from the outlet 211, when the reset button 280 extends out of the housing 210, the connecting rod 230 can be abutted against the reset button 280, at this time, if the push rod 222 extends out of the bracket 221 and provides a driving force to make the connecting rod 230 have a tendency to rotate around a set axis along a first direction, since the connecting rod 230 is abutted against the reset button 280 extending out of the housing 210, the rotation of the connecting rod 230 is blocked by the reset button 280, only after the reset button 280 is pressed to make the reset button 280 retract into the housing 210 from the outlet 211 again, the reset button 280 no longer abuts against the connecting rod 230, the rotation of the connecting rod 230 along the first direction is not blocked, the connecting rod 230 can be reset, and the connecting rod 230 no longer blocks the closing of the idle opening mechanism 100; also, when the link 230 is rotated in the first direction to reset, the link 230 again abuts the reset button 280 to block the reset button 280 from protruding out of the housing 210.

Further, referring to fig. 4 and 5, the leakage mechanism 200 further includes an elastic member 290, the elastic member 290 is disposed between the housing 210 and the reset button 280, and the elastic member 290 has a movement tendency that the reset button 280 always extends out of the housing 210 from the outlet 211; thus, when the push rod 222 retracts into the bracket 221, the driving link 230 rotates in the second direction, and the locking of the reset button 280 is released, the reset button 280 can be protruded out of the housing 210 from the outlet 211 by the elastic member 290. The elastic member 290 includes, but is not limited to, a spring and a torsion spring. It should be understood that in other embodiments, the leakage mechanism 200 may not include the elastic member 290, but the reset button 280 may be made of an elastic material so that the reset button 280 can protrude out of the housing 210 through the outlet 211 under its own elasticity when the reset button 280 is unlocked.

Still further, the reset button 280 is provided with a receiving groove 281, the housing 210 is connected with a limit bump 212, the elastic member 290 is arranged in the receiving groove 281, and two ends of the elastic member 290 are respectively connected with the reset button 280 and the limit bump 212; so configured, the stability of the elastic member 290 disposed between the reset button 280 and the housing 210 is ensured.

Referring to fig. 2 and 3, the reset button 280 includes a reset button body 284, and a first limit protrusion 282 and a second limit protrusion 283 connected to the reset button body 284, wherein the reset button body 284 is provided with a receiving slot 281, and two ends of the elastic member 290 are respectively connected to the reset button body 284 and the limit protrusion 212; when the reset button body 284 extends out of the housing 210 from the outlet 211, the first limit projection 282 abuts the housing 210 to prevent the reset button 280 from disengaging the housing 210 from the outlet 211; when the reset button body 284 retracts the housing 210 from the outlet 211, the linkage 230 can abut the second stop protrusion 283 to lock the reset button 280 in position to retract the housing 210 with the linkage 230.

Referring to fig. 2 and 3, in the present embodiment, a first end of the link 230 is in transmission fit with the trip unit 220, and a second end of the link 230 is in transmission fit with the idle opening mechanism 100; the release 220 is used to drive the first end of the link 230 to move about the set axis, so that the second end of the link 230 is pried and can trip the mechanism 100. In this way, after the first end of the link 230 is driven by the trip 220, the drop-in sheet of the link 230 can be pried, so that the link 230 forms a lever-like motion state, and further, the driving force is reliably transmitted to the second end of the link 230, so that the link 230 which is in transmission fit with the idle opening mechanism 100 can be reliably moved, the problem that the link 230 is easily stuck is solved, and the link 230 can reliably drive the idle opening mechanism 100 to trip.

Further, referring to fig. 2, 3 and 6, the connecting rod 230 includes a connecting portion 240, a first arm 250 and a second arm 260, the connecting portion 240 is movably disposed on the housing 210, one end of the first arm 250 is connected to the connecting portion 240, and the other end of the first arm 250 is a first end of the connecting rod 230; one end of the second arm 260 is connected to the connection part 240, and the other end of the second arm 260 is a second end of the link 230. With the arrangement, the link 230 can be ensured to form a lever-like motion state under the driving of the release 220, and when the first end of the link 230 is stressed, the driving force can be reliably transmitted to the second end of the link 230, so that the second end of the pried link 230 can reliably trip the idle opening mechanism 100 to be released.

Still further, the connecting portion 240 includes a fitting 241 and an extending piece 242, the extending piece 242 is connected with the fitting 241, the fitting 241 is rotatably disposed on the housing 210, and a rotation axis of the fitting 241 is a set axis; one end of the first arm 250 is connected to the extending member 242, one end of the second arm 260 is connected to the fitting member 241, the first arm 250 and the second arm 260 are spaced apart from each other in the longitudinal extending direction of the extending member 242, and the other end of the first arm 250 and the other end of the second arm 260 are disposed on both sides of the longitudinal extending direction of the extending member 242. With such an arrangement, on one hand, the connecting rod 230 can be ensured to reliably and smoothly rotate around the set axis; on the other hand, after the first end of the connecting rod 230 is driven by the release 220, the driving force can be reliably transmitted to the second end of the connecting rod 230 by using the lever principle, so that the emptying mechanism 100 can be reliably stirred by using the connecting rod 230.

It should be noted that, if the first arm 250 is moved to the fitting 241, the first arm 250 and the second arm 260 are substantially at a straight angle, so that the end of the first arm 250 away from the connecting portion 240 and the end of the second arm 260 away from the connecting portion 240 can be maximally separated from each other, so as to ensure that the link 230 can reliably move the idle opening mechanism 100.

It should be understood that in other embodiments, the first arm 250 and the second arm 260 are both connected to the fitting 241, or the first arm 250 and the second arm 260 are both connected to the extending member 242, and are not particularly limited herein.

Optionally, referring to fig. 2, the housing 210 is connected with a rotating shaft 213, the assembly 241 is rotatably inserted and matched with the rotating shaft 213, and an axis of the rotating shaft 213 is a set axis, that is, the connecting rod 230 can rotate around the rotating shaft 213 to toggle the idle opening mechanism 100.

Further, the fitting 241 has a cylindrical shape, and the extension 242 is coupled to an outer circumference of the fitting 241.

In order to enable the driving force received by the first end of the link 230 to be more sensitively and reliably transmitted to the second end of the link 230, improve the problem that the link 230 is easily stuck, and further reliably and smoothly drive the idle opening mechanism 100 to trip, the length of the first arm 250 is set to be greater than that of the second arm 260.

Referring to fig. 2, 3 and 6, in the present embodiment, the trip unit 220 is inserted into the first arm 250 to ensure that the trip unit 220 can reliably drive the link 230 to move.

Further, the first arm 250 is provided with a long groove 251, the push rod 222 is provided with an annular groove 223, the annular groove 223 is provided with a first groove wall 224 and a second groove wall 225 which are distributed oppositely, the annular groove 223 of the push rod 222 is inserted into the long groove 251, and the first groove wall 224 and the second groove wall 225 can be abutted against the first arm 250; when the pushing rod 222 retracts into the bracket 221, the first groove wall 224 abuts against the first arm 250 to drive the connecting rod 230 to rotate along the second direction, so that the second end of the connecting rod 230 is used for shifting the opening mechanism 100 to cut off the line; when the push rod 222 extends out of the bracket 221, the second groove wall 225 can abut against the first arm 250 to drive the connecting rod 230 to rotate along the first direction, so that the connecting rod 230 is reset, and the opening mechanism 100 can be closed.

The first arm 250 is provided with a long groove 251, so that the push rod 222 can slide in the long groove 251 when the push rod 222 extends and retracts relative to the bracket 221, the jamming between the first arm 250 and the push rod 222 is avoided, the push rod 222 can reliably drive the connecting rod 230 to move, and the tripping of the idle opening mechanism 100 can be reliably realized.

Still further, the first arm 250 is an arc-shaped arm, so that when the push rod 222 retracts into the bracket 221, the first groove wall 224 abutting against the first arm 250 can be ensured to smoothly slide along the first arm 250, the problem of clamping stagnation between the push rod 222 and the connecting rod 230 can be effectively avoided, and the connecting rod 230 can be ensured to reliably move under the driving of the push rod 222, so as to reliably toggle the idle opening mechanism 100 and cut off a line.

Referring to fig. 2 and 6, one end of the second arm 260, which is away from the assembly 241, is connected with a connecting rod shaft 261, the housing 210 is provided with an arc-shaped groove 214, a circle center of the arc-shaped groove 214 coincides with a set axis, and the connecting rod shaft 261 is inserted into the arc-shaped groove 214 and is in transmission fit with the idle opening mechanism 100; when the push rod 222 retracts into the bracket 221 to drive the link 230 to rotate in the second direction, the link shaft 261 slides in the arc-shaped groove 214 and pushes the idle opening mechanism 100 to be cut off.

Referring to fig. 2, 3 and 6, the connecting rod 230 further includes a third arm 270, one end of the third arm 270 is connected to the extending member 242, and the other end of the first arm 250 and the other end of the third arm 270 are distributed on two sides of the extending member 242 in the length extending direction; when the push rod 222 extends out of the bracket 221, the first end of the link 230 can rotate in the first direction around the set axis, and the third arm 270 can abut against the reset button 280 to lock the reset button 280 at a position retracted from the outlet 211 into the housing 210, specifically, the third arm 270 can overlap the second limit protrusion 283 to overcome the elastic action of the elastic member 290 to block the reset button 280 from extending out of the housing 210; when the push rod 222 retracts into the bracket 221, the first end of the link 230 can rotate in the second direction about the set axis, and the third arm 270 can unlock the position of the reset button 280, such that the reset button 280 can extend out of the housing 210 from the outlet 211; specifically, when the link 230 rotates in the second direction, the third arm 270 continuously moves in a direction of being separated from the second stopper protrusion 283, and at the same time, the reset button 280 simultaneously moves in a direction of being protruded from the outlet 211 out of the housing 210 by the elastic force of the elastic member 290. In this arrangement, when the leakage phenomenon occurs, the link 230 can be used not only to toggle the idle opening mechanism 100 to be turned off, but also to synchronously unlock the reset button 280, so that the reset button 280 protrudes out of the housing 210.

Further, when the push rod 222 retracts into the bracket 221, the connecting rod 230 is driven by the push rod 222 to toggle the idle opening mechanism 100 and disconnect the idle opening mechanism 100, the reset button 280 is unlocked and can extend out of the housing 210 from the outlet 211, and the third arm 270 can abut against the reset button 280, specifically, the third arm 270 can abut against the side edge of the second limit protrusion 283; at this time, if the push rod 222 extends out of the bracket 221 and pushes the connecting rod 230 to rotate along the first direction around the set axis, since the third arm 270 abuts against the reset button 280 extending out of the housing 210, that is, the third arm 270 abuts against the second limit protrusion 283, the rotation of the connecting rod 230 is blocked by the reset button 280, only after the reset button 280 is pressed down and the reset button 280 retracts into the housing 210 from the outlet 211 again, the reset button 280 does not abut against the third arm 270 any more, and the rotation of the connecting rod 230 along the first direction is not blocked, so that the connecting rod 230 can be reset, and the connecting rod 230 does not block the closing of the vacancy releasing mechanism 100 any more.

In this embodiment, referring to fig. 2 and fig. 3, the moving direction of the push rod 222 relative to the bracket 221 is the same as the moving direction of the reset button 280 relative to the housing 210; with this arrangement, when the push rod 222 extends and contracts to drive the link 230 to move, the link 230 can be reliably brought into a lever-like movement state, and on the one hand, the idle opening mechanism 100 can be reliably pushed to be cut off, and on the other hand, the reset button 280 can be reliably ejected out of the housing 210.

The moving direction of the push rod 222 extending and contracting with respect to the bracket 221 is the same as the moving direction of the reset button 280 extending and contracting with respect to the housing 210, and may be: the telescopic moving direction of the push rod 222 relative to the bracket 221 is identical to the telescopic moving direction of the reset button 280 relative to the housing 210, or the telescopic moving direction of the push rod 222 relative to the bracket 221 and the telescopic moving direction of the reset button 280 relative to the housing 210 have a certain small angle deviation, for example: small angle deviations of 1 °, 2 °, etc.

The leakage mechanism 200 of the present embodiment may be used to cut off the idle opening mechanism 100 when leakage occurs, and when leakage occurs, the push rod 222 retracts into the bracket 221 to drive the first end of the connecting rod 230 to rotate around the set axis along the second direction, and pry the second end of the connecting rod 230, so as to quickly and reliably poke the idle opening mechanism 100 by using the second end of the connecting rod 230 to cut off the idle opening mechanism.

In summary, in the circuit breaker 010 of the present invention, the leakage mechanism 200 can be used to cut off the circuit when there is leakage, and the leakage mechanism 200 can solve the problem that the link 230 is easily jammed, and the problem that the release 220 cannot reliably drive the trip mechanism 100 to release the circuit.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An electrical leakage mechanism, comprising:

a housing (210);

a release (220), the release (220) disposed on the housing (210);

the connecting rod (230) is movably arranged on the shell (210), a first end of the connecting rod (230) is in transmission fit with the release (220), and a second end of the connecting rod (230) is used for being in transmission fit with the idle opening mechanism (100); the tripper (220) is used for driving the first end of the connecting rod (230) to move around a set axis, so that the second end of the connecting rod (230) is pried, and the idle opening mechanism (100) can be tripped.

2. The leakage mechanism of claim 1, wherein the connecting rod (230) comprises a connecting portion (240), a first arm (250) and a second arm (260), the connecting portion (240) is movably disposed on the housing (210), one end of the first arm (250) is connected to the connecting portion (240), and the other end of the first arm (250) is a first end of the connecting rod (230); one end of the second arm (260) is connected to the connecting portion (240), and the other end of the second arm (260) is a second end of the link (230).

3. A leakage mechanism according to claim 2, wherein the connection portion (240) comprises a fitting (241) and an extension piece (242), the extension piece (242) being connected to the fitting (241), the fitting (241) being rotatably provided to the housing (210); one end of the first arm (250) is connected with the extending piece (242), one end of the second arm (260) is connected with the assembling piece (241), and the other end of the first arm (250) and the other end of the second arm (260) are distributed on two sides of the length extending direction of the extending piece (242).

4. A leakage mechanism according to claim 2, wherein the length of the first arm (250) is greater than the length of the second arm (260).

5. A leakage mechanism according to claim 2, characterized in that the first arm (250) is an arc-shaped arm.

6. The leakage mechanism according to claim 3, wherein the link (230) further comprises a third arm (270), one end of the third arm (270) is connected to the extension member (242), and the other end of the first arm (250) and the other end of the third arm (270) are distributed on two sides of the extension member (242) in the length extension direction;

the leakage mechanism further comprises a reset button (280), the shell (210) is provided with an outlet (211), and the reset button (280) is movably arranged on the shell (210) and can extend out of or retract back from the outlet (211); the third arm (270) is abuttable with the reset button (280) to lock the reset button (280) in a position retracted from the outlet (211) to the housing (210).

7. A leakage mechanism according to any of claims 1-5, further comprising a reset button (280), wherein the housing (210) is provided with an outlet (211), and wherein the reset button (280) is movably arranged in the housing (210) and can be extended or retracted from the outlet (211);

the release (220) comprises a bracket (221) and a push rod (222), the bracket (221) is arranged on the shell (210), the push rod (222) is movably arranged on the bracket (221), the push rod (222) can stretch and retract relative to the bracket (221), and the push rod (222) is in transmission fit with the first end of the connecting rod (230);

when the push rod (222) is extended relative to the bracket (221), the first end of the link (230) is rotatable about the set axis in a first direction and the link (230) is brought into abutment with the reset button (280) to lock the reset button (280) in a position retracted from the outlet (211) into the housing (210); when the push rod (222) retracts relative to the bracket (221), the first end of the connecting rod (230) can rotate around the set axis in a second direction, and the connecting rod (230) releases the position locking of the reset button (280), so that the reset button (280) can extend out of the shell (210) from the outlet (211); wherein the first direction is opposite to the second direction.

8. The leakage mechanism according to claim 7, wherein a moving direction of the push rod (222) relative to the bracket (221) in extension and contraction is the same as a moving direction of the reset button (280) relative to the housing (210) in extension and contraction.

9. Mechanism according to claim 7, characterized in that it further comprises an elastic element (290), said elastic element (290) being arranged between said housing (210) and said reset button (280), and said elastic element (290) having a tendency to cause said reset button (280) to always have a movement that extends out of said housing (210) from said outlet (211).

10. A circuit breaker comprising an idle opening mechanism (100) and a residual current mechanism according to any of claims 1 to 9, wherein the second end of the link (230) is in driving engagement with the idle opening mechanism (100).