CN117612908A - Leakage fault indicating device and leakage circuit breaker - Google Patents

Abstract

The application provides an electric leakage fault indicating device and electric leakage circuit breaker belongs to electrical equipment technical field. The leakage fault indicating device includes: casing, electric leakage tripping device, moving contact subassembly and instruction structure. The indication structure comprises a first indication part and a second indication part which are different from each other. When the leakage breaker works normally, the first indication part is opposite to the indication window. When the leakage breaker has leakage faults, the movable contact assembly rotates and drives the indicating structure to move in the mounting groove, so that the second indicating part is opposite to the indicating window. This application sets up electric leakage fault indicating device in electric leakage circuit breaker, utilizes moving contact assembly to rotate and drives the instruction structure and remove, can instruct electric leakage fault in time accurately, makes the user know whether electric leakage circuit breaker takes place to trip because the electric leakage appears in the first time to in time maintain or change electrical equipment, guaranteed electrical equipment's safety in utilization.

Description

Leakage fault indicating device and leakage circuit breaker

Technical Field

The application relates to the technical field of electrical equipment, in particular to an electric leakage fault indicating device and an electric leakage breaker.

Background

Circuit breakers are important switching devices in electrical power mechanisms that are capable of opening, carrying, and breaking electrical current in a circuit. The circuit breaker can cut off the circuit by automatic tripping when the circuit fails, preventing damage to the circuit and electrical equipment.

When overload, short circuit or leakage faults occur in the circuit, the circuit breaker can have a tripping phenomenon, so that a user can hardly determine the tripping reason of the circuit breaker when the user finds that the circuit breaker trips. Accordingly, there is a need for a leakage fault indicating device to indicate when a circuit fails, whether the cause of the fault is a circuit breaker trip caused by a leakage fault.

Disclosure of Invention

The utility model provides a leakage fault indicating device and leakage circuit breaker can in time accurately indicate leakage fault.

In a first aspect, the present application provides an electrical leakage fault indication device, comprising: casing, electric leakage tripping device, moving contact subassembly and instruction structure. The housing is provided with an indication window and a mounting groove. The electric leakage tripping mechanism is fixedly arranged on the shell and comprises an action end. The movable contact assembly is rotatably connected to the shell, and is positioned on one side of the electric leakage tripping mechanism close to the action end, and the movable contact assembly is linked with the action end. The moving contact assembly comprises a moving contact, and the moving contact is matched with the fixed contact. The indication structure is arranged in the mounting groove and can move in the mounting groove, the indication structure is positioned on the same side of the electric leakage tripping mechanism and the moving contact assembly and comprises a first indication part and a second indication part which are mutually different, and the first indication part is close to the electric leakage tripping mechanism relative to the second indication part.

When the leakage breaker works normally, the first indication part is opposite to the indication window. When the leakage breaker has leakage faults, the leakage tripping mechanism acts, and the action end drives the moving contact assembly to rotate so as to separate the moving contact from the static contact. The moving contact assembly drives the indicating structure to move in the mounting groove when rotating so that the second indicating part is opposite to the position of the indicating window.

Through above-mentioned setting, this application is through setting up the indication structure in the electric leakage circuit breaker, can in time accurately instruct electric leakage fault. The first indication part and the second indication part are arranged on the indication structure, and the first indication part and the second indication part are different from each other, so that a user can more clearly judge whether the position of the indication structure changes, and further, whether the circuit breaker trips due to the electric leakage phenomenon can be more clearly determined.

The movable contact assembly is utilized to drive the indication structure to move, so that the position change of the first indication part and the second indication part is faster and more accurate, the problem that in the prior art, an electric leakage detection device is usually required to be arranged inside an electric leakage circuit breaker, and the electric leakage detection device is required to be matched with an electric leakage indication button to indicate electric leakage faults is solved, and the use of the inner space of the electric leakage circuit breaker is also saved on the basis of reducing the manufacturing cost of the electric leakage circuit breaker. And, this application makes moving contact subassembly drive instruction structure and removes, makes moving contact subassembly play multiplexing function, has saved and has required additionally to set up the driving piece and has driven instruction structure and remove, reduces the use quantity of structure.

In one possible design, the color of the first indicator portion is different from the color of the second indicator portion.

Through the arrangement, the first indication part and the second indication part are different in color, so that whether the leakage circuit breaker is in a leakage state or not can be displayed more clearly, and the occurrence of the problem that the leakage fault indication is unclear due to the fact that the first indication part and the second indication part are not obvious in difference can be reduced.

In one possible design, one of the first and second indicator portions is provided with an indicator groove, and the other of the first and second indicator portions is not provided with an indicator groove.

Through the arrangement, the indication groove is arranged on one of the first indication part or the second indication part, and the indication groove is not arranged on the other one, so that the difference between the first indication part and the second indication part is more obvious, and the indication of the indication structure to the leakage fault is more clear.

In one possible design, the indication structure includes a body portion and a first abutment portion, and the first abutment portion is connected to a side of the body portion facing away from the indication window. The first indication part and the second indication part are arranged on one side of the body part facing the indication window. One side of the movable contact assembly, which faces the indication window, is provided with a pushing part, and the first pushing part is positioned on a rotating path of the pushing part. When the electric leakage breaker has electric leakage faults and the moving contact assembly rotates, the pushing part pushes the first abutting part, so that the indication structure moves in the mounting groove.

Through above-mentioned setting, set up the portion of pushing away on moving contact assembly, thereby solved and need directly go to push away the problem that first butt portion made the instruction structure remove with moving contact assembly, can make moving contact assembly and first butt portion dislocation set, make the inside spatial layout of electric leakage circuit breaker more reasonable, saved the inside space use of electric leakage circuit breaker.

In one possible design, the first contact portion has a plate-like structure, and the plate surface with the largest area among the first contact portions faces the pushing portion.

Through the arrangement, the first abutting part can be abutted with the abutting part with a larger area, so that when the abutting part abuts against the first abutting part, the thrust of the abutting part can well act on the first abutting part, the possibility of occurrence of the problem that the abutting part and the first abutting part fail in abutting due to the fact that the area of the first abutting part is too small is reduced, and the reliability of the abutting relation between the abutting part and the first abutting part is ensured.

In one possible design, the pushing portion is in contact with the first abutting portion when the earth leakage breaker is operating normally.

Through the arrangement, when the electric leakage circuit breaker normally works, the abutting part and the first abutting part are always in a contact state, so that once the electric leakage circuit breaker has an electric leakage fault, and the moving contact assembly rotates, the abutting part of the moving contact assembly can push the first abutting part at the first time so as to drive the indicating structure to move, and the position of the indicating structure opposite to the position of the indicating window is rapidly switched from the first indicating position to the second indicating position. Thus, the reaction time of the indication structure can be effectively reduced, and the sensitivity of the indication structure is increased.

In one possible design, the indication structure further includes an elastic portion, one end of the elastic portion is connected with the body portion, and the other end of the elastic portion abuts against a groove wall of the mounting groove, which is close to the moving contact assembly. When the leakage breaker works normally, the elastic part is in a free state. When the pushing part pushes the first abutting part, the elastic part compresses and stores energy when the indicating structure moves in the mounting groove. When the pushing part releases pushing of the first abutting part, the elastic part releases elastic potential energy to reset the indicating structure.

Through above-mentioned setting, keep away from first instruction position and second instruction position one side at body portion and set up the elastic part, utilize the elastic potential energy that the elastic part compression produced to make body portion reset, solved and all need the manual work to instruct the structure to reset problem after the earth leakage protection appears in the earth leakage circuit breaker at every turn, reached the automatic purpose of earth leakage instruction.

In one possible design, the electric leakage fault indication device further includes a spring, the spring is connected to the electric leakage test circuit of the electric leakage breaker, and the spring is located on the rotating path of the moving contact assembly. The indicating structure further includes a second abutment. When the electric leakage circuit breaker generates electric leakage faults, the moving contact assembly pushes the elastic sheet, and one end of the elastic sheet, which is close to the indication structure, is abutted with the second abutting part.

Through above-mentioned setting, utilize moving contact subassembly to rotate and make the shell fragment deformation to the butt is in second butt portion, can be under the circumstances that the butt portion carries out spacingly to first butt portion, strengthens the spacing effect to the indication structure, has guaranteed under the electric leakage state that the second indication position of indication structure can steadily correspond with the indication window. Moreover, in this application, the shell fragment not only can be used for the electric leakage circuit breaker to carry out the electric leakage test, and the shell fragment can also carry out spacingly to second butt portion, just so can make the shell fragment reach multiplexing effect, has reduced the locating part that additionally set up second butt portion, has reduced the manufacturing cost of electric leakage circuit breaker to the use of electric leakage circuit breaker inner space has been saved.

In one possible design, one end of the elastic sheet, which is close to the indicating structure, is contacted with the plate surface with the largest area of the second abutting part.

Through above-mentioned setting, can increase the abutting area of shell fragment and second butt portion, guaranteed the spacing effect of shell fragment to second butt portion, avoided the emergence of the problem that leads to the butt to become invalid because of shell fragment and second butt portion abutting area is too little, guaranteed the spacing effect of shell fragment to indication structure.

In a second aspect, the present application provides an electrical leakage breaker, including the electrical leakage fault indication device of the first aspect.

Through above-mentioned setting, this application sets up electric leakage fault indication device in electric leakage circuit breaker, utilizes moving contact assembly to rotate and drives the interior indication structure motion of electric leakage fault indication device, can in time accurately show the fault cause when electrical equipment is in the electric leakage problem. The user can know the fault cause at the first time, and maintain or replace the electrical equipment, so that the use safety of the electrical equipment is ensured, and the personal safety of the user is ensured.

The advantages provided by the second aspect and the possible designs of the second aspect may be referred to the advantages provided by the first aspect and the possible embodiments of the first aspect, and are not described herein.

Drawings

Fig. 1 is a schematic structural diagram of an electrical leakage breaker according to an embodiment of the present application.

Fig. 2 is a schematic diagram of an internal structure of a housing according to an embodiment of the present application.

Fig. 3 is a schematic diagram of an internal structure of the leakage breaker according to the embodiment of the present application when the leakage breaker is operating normally.

Fig. 4 is an enlarged view of a portion a in fig. 3.

Fig. 5 is a schematic diagram of an internal structure of an electrical leakage breaker according to an embodiment of the present application when an electrical leakage fault occurs.

Fig. 6 is an enlarged view of the portion B in fig. 5.

Fig. 7 is a schematic structural diagram of an electric leakage fault indicating device according to an embodiment of the present application.

Fig. 8 is a schematic structural diagram of a moving contact assembly according to an embodiment of the present application.

Fig. 9 is a schematic structural diagram of an indication structure according to an embodiment of the present application under a view angle.

Fig. 10 is a schematic structural diagram of an indication structure according to an embodiment of the present application at another view angle.

Fig. 11 is a schematic view of a part of the internal structure of an earth leakage breaker when an earth leakage fault occurs in the embodiment of the present application.

Fig. 12 is an enlarged view of a portion C in fig. 11.

Reference numerals illustrate:

100. a housing; 110. An indication window; 120. A mounting groove;

200. a leakage tripping mechanism; 210. An action end;

300. a moving contact assembly; 310. a moving contact; 320. a contact support; 330. a pushing member; 331. a pushing part;

400. an indication structure; 410. a first indication portion; 420. a second indication part; 430. a body portion; 440. a first abutting portion; 450. an elastic part; 460. a second abutting portion;

500. and the elastic sheet.

Detailed Description

For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, based on the embodiments herein, which would be apparent to one of ordinary skill in the art without making any inventive effort, are intended to be within the scope of the present application.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description of the applications herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.

The terms "comprising" and "having" and any variations thereof in the description and claims of the present application and in the description of the drawings are intended to cover, but not exclude, other matters. The word "a" or "an" does not exclude the presence of a plurality.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the present application. The appearances of the phrase "an embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

The term "and/or" is herein merely an association relationship describing an associated object, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

The directional terms appearing in the following description are all directions shown in the drawings and do not limit a specific structure of the present application. For example, in the description of the present application, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.

Furthermore, the terms first, second and the like in the description and in the claims of the present application or in the above-described figures, are used for distinguishing between different objects and not for describing a particular sequential order, and may be used to expressly or implicitly include one or more such features.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "coupled" are to be construed broadly, e.g., the terms "connected" or "coupled" of a mechanical structure may refer to a physical connection, e.g., the physical connection may be a fixed connection, e.g., by a fastener, such as a screw, bolt, or other fastener; the physical connection may also be a detachable connection, such as a snap-fit or snap-fit connection; the physical connection may also be an integral connection, such as a welded, glued or integrally formed connection. "connected" or "connected" of circuit structures may refer to physical connection, electrical connection or signal connection, for example, direct connection, i.e. physical connection, or indirect connection through at least one element in the middle, so long as circuit communication is achieved, or internal communication between two elements; signal connection may refer to signal connection through a medium such as radio waves, in addition to signal connection through a circuit. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.

In order to better understand the scheme of the present application, the following description will make clear and complete descriptions of the leakage fault indication device in the embodiments of the present application with reference to the accompanying drawings.

Fig. 1 is a schematic structural diagram of an electrical leakage breaker according to an embodiment of the present application. Fig. 2 is a schematic diagram of an internal structure of a housing according to an embodiment of the present application. Fig. 3 is a schematic diagram of an internal structure of the leakage breaker according to the embodiment of the present application when the leakage breaker is operating normally. Fig. 4 is an enlarged view of a portion a in fig. 3.

The application provides an electric leakage fault indicating device, which is applied to an electric leakage circuit breaker. As shown in fig. 1 to 4, the leakage fault indication apparatus includes: the device comprises a housing 100, an electric leakage tripping mechanism 200, a moving contact assembly 300 and an indicating structure 400. The housing 100 is provided with an indication window 110 and a mounting groove 120. The leakage tripping mechanism 200 is fixedly mounted to the housing 100, and the leakage tripping mechanism 200 includes an actuating end 210. The movable contact assembly 300 is rotatably connected to the housing 100, the movable contact assembly 300 is located at a side of the leakage tripping mechanism 200 near the action end 210, and the movable contact assembly 300 is linked with the action end 210. The moving contact assembly 300 includes a moving contact 310, and the moving contact 310 is matched with a fixed contact.

The indication structure 400 is mounted in the mounting groove 120 and can move in the mounting groove 120, the indication structure 400 is located on the same side of the leakage tripping mechanism 200 and the moving contact assembly 300, the indication structure 400 comprises a first indication part 410 and a second indication part 420 which are different from each other, and the first indication part 410 is close to the leakage tripping mechanism 200 relative to the second indication part 420.

The housing 100 is used for protecting the leakage tripping mechanism 200, the moving contact assembly 300, the indication structure 400, and the like inside the leakage breaker. The leakage circuit breaker that this application provided can also carry out short-circuit protection and overload protection to electrical equipment when carrying out earth leakage protection to the circuit. The housing 100 includes a first housing, a second housing, and a third housing, where the second housing is disposed between the first housing and the third housing. The second shell and the first shell are mutually covered to form a first installation cavity, and the second shell and the third shell are mutually covered to form a second installation cavity. The short-circuit protection mechanism and the overload protection mechanism are arranged in the first mounting cavity, and the electric leakage protection mechanism is arranged in the second mounting cavity.

The indication window 110 is provided on the third housing, and the mounting groove 120 is provided on a housing wall of a side of the second housing facing the second mounting cavity.

The leakage tripping mechanism 200 is an important component in a leakage breaker, and when a circuit has leakage faults, a movable iron core in the leakage tripping mechanism 200 moves to drive a movable contact 310 to be separated from a fixed contact, so that the circuit is rapidly cut off, and personal safety and equipment safety are protected. The actuating end 210 of the leakage tripping mechanism 200 is the end of the movable iron core near the indicating structure 400.

The moving contact assembly 300 includes a moving contact 310, a contact support 320, and a pushing member 330, wherein the moving contact 310 is fixedly mounted on the contact support 320, and the contact support 320 is fixedly connected with the pushing member 330. One end of the pushing member 330 is movably connected with the action end 210, and the other end of the pushing member 330 is connected with the moving contact assembly in the first mounting cavity.

The indication structure 400 is used for indicating the leakage fault state of the leakage breaker. The indication structure 400 is a sheet-like structure, and the sidewall of the indication structure 400 contacts the groove wall of the mounting groove 120. The first indicator portion 410 is not identical to the second indicator portion 420, including but not limited to, different colors, different shapes, and the like. The first indication part 410 and the second indication part 420 are used for indicating different states of the leakage breaker.

As shown in fig. 1, 3 and 4, when the earth leakage breaker is operating normally, the first indication portion 410 is opposite to the indication window 110.

Fig. 5 is a schematic diagram of an internal structure of an electrical leakage breaker according to an embodiment of the present application when an electrical leakage fault occurs. Fig. 6 is an enlarged view of the portion B in fig. 5. As shown in fig. 5 and 6, when an earth leakage fault occurs in the earth leakage breaker, the earth leakage tripping mechanism 200 acts, and the action end 210 drives the moving contact assembly 300 to rotate, so that the moving contact 310 is separated from the fixed contact. When the movable contact assembly 300 rotates, the indication structure 400 is driven to move in the mounting groove 120, so that the second indication part 420 is opposite to the indication window 110.

When the leakage breaker works normally, the moving contact 310 contacts with the fixed contact, the current in the leakage breaker is in a flowing state, and the leakage tripping mechanism 200 is in a normal state. At this time, the movable core and the stationary core are separated, the pushing member 330 is in a normal state, and the first indication portion 410 of the indication structure 400 is opposite to the indication window 110 of the housing 100, and in this state, the leakage breaker can be indicated by the first indication portion 410 that no leakage fault occurs.

When an abnormal voltage signal or abnormal current occurs in the residual current circuit breaker, a current transformer arranged in the residual current circuit breaker can detect the abnormal voltage signal or abnormal current and send a signal to the circuit board. The circuit board controls the coil of the leakage tripping mechanism 200 to be electrified after receiving the signal sent by the current transformer, and generates a magnetic field after the coil is electrified, so that the static iron core arranged in the leakage tripping mechanism 200 is magnetized by the magnetic field generated by the coil. The magnetized static iron core generates magnetic force to attract the movable iron core, so that the movable iron core moves in the electric leakage tripping mechanism 200 towards the direction approaching the static iron core.

When the residual current circuit breaker is placed as shown in fig. 3, the moving end 210 drives the moving contact assembly 300 to rotate clockwise, and in the process that the moving end 210 drives the moving contact assembly 300 to rotate, the moving contact assembly 300 drives the indicating structure 400 to move rightward, so that the second indicating part 420 moves to the lower part of the indicating window 110. At this time, the occurrence of the leakage fault in the leakage breaker can be indicated by the second indication part 420, and the user can know that the leakage fault has occurred in the leakage breaker when the user sees the second indication part 420 of the indication structure 400 through the indication window 110.

In summary, the indication structure 400 is provided in the leakage circuit breaker, so that a user can clearly know whether the circuit breaker is tripped due to leakage. The first indication part 410 and the second indication part 420 are arranged on the indication structure 400, and the first indication part 410 and the second indication part 420 are different from each other, so that a user can more clearly judge whether the position of the indication structure 400 changes, and further, whether the circuit breaker trips due to the electric leakage phenomenon can be more clearly determined.

The movable contact assembly 300 is utilized to drive the indication structure 400 to move, so that the position change of the first indication part 410 and the second indication part 420 can be faster and more accurate, the problem that in the prior art, an electric leakage detection device is required to be arranged inside an electric leakage circuit breaker and the electric leakage detection device is required to be matched with an electric leakage indication button to indicate electric leakage faults is solved, and the use of the internal space of the electric leakage circuit breaker is also saved on the basis of reducing the manufacturing cost of the electric leakage circuit breaker.

In addition, the movable contact assembly 300 drives the indication structure 400 to move, so that the movable contact assembly 300 has a multiplexing function, the additional driving piece is saved to drive the indication structure 400 to move, and the number of structural parts is reduced.

It should be noted that, after the leakage circuit breaker generates electricity leakage, the moving contact assembly 300 at one side of the leakage protection mechanism drives the moving contact 310 to separate from the static contact, and in the process of separating the moving contact 310 from the static contact, the moving contact assembly 300 drives the indication structure 400 to indicate the leakage fault, and meanwhile, the moving contact 310 at one side of the short circuit protection mechanism and the overload protection mechanism is also separated from the static contact under the driving of the linkage mechanism. When the leakage circuit breaker is short-circuited or overloaded, the moving contact on one side of the short-circuit protection mechanism and the overload protection mechanism are separated from the fixed contact, and meanwhile, the moving contact 310 on one side of the leakage protection mechanism is separated from the fixed contact, but the state of the indication structure 400 is not changed.

In one possible design, the color of the first indicator portion 410 is different from the color of the second indicator portion 420.

The difference in color may allow the user to better distinguish the first indicator portion 410 from the second indicator portion 420, for example, the second indicator portion 420 may be red when the first indicator portion 410 is green, or the second indicator portion 420 may be purple when the first indicator portion 410 is yellow. In terms of color selection of the first indication portion 410 and the second indication portion 420, colors that are significantly contrasting may be selected as much as possible. The colors of the first indication portion 410 and the second indication portion 420 are not particularly limited in this application.

In addition to the first indication part 410 and the second indication part 420 being able to be distinguished by different colors, different marks may be attached to the first indication part 410 and the second indication part 420, or different marks may be made on the first indication part 410 and the second indication part 420.

In summary, the first indication portion 410 and the second indication portion 420 have different colors, so that whether the leakage circuit breaker is in the leakage state can be displayed more clearly, and the occurrence of the problem of unclear indication of the leakage fault due to the fact that the first indication portion 410 and the second indication portion 420 are not obvious in difference can be reduced.

In one possible design, one of the first and second indicator portions 410, 420 is provided with an indicator groove, and the other of the first and second indicator portions 410, 420 is not provided with an indicator groove.

The indication groove can be in a shape of a straight line, a cross, a circle and the like, and the setting position and the setting shape of the indication groove are not limited.

In one case, the first indication portion 410 is provided with an indication groove, and the second indication portion 420 is not provided with an indication groove. In the second case, the first indication portion 410 is not provided with an indication groove, and the second indication portion 420 is provided with an indication groove.

In summary, one of the first indication portion 410 or the second indication portion 420 is provided with the indication groove, and the other one is not provided with the indication groove, so that the difference between the first indication portion 410 and the second indication portion 420 is more obvious, and the user can further distinguish the first indication portion 410 from the second indication portion 420.

Fig. 7 is a schematic structural diagram of an electric leakage fault indicating device according to an embodiment of the present application. Fig. 8 is a schematic structural diagram of a moving contact assembly 300 according to an embodiment of the present application.

As shown in fig. 3, 4, 7 and 8, the indication structure 400 includes a main body 430 and a first abutting portion 440, and the first abutting portion 440 is connected to a side of the main body 430 facing away from the indication window 110. The first indication portion 410 and the second indication portion 420 are disposed on a side of the body portion 430 facing the indication window 110. The movable contact assembly 300 is provided with a pushing portion 331 at a side facing the indication window 110, and the first abutting portion 440 is located on a rotation path of the pushing portion 331. When the leakage breaker fails, the movable contact assembly 300 rotates, the pushing portion 331 pushes the first abutting portion 440, so that the indication structure 400 moves in the mounting groove 120.

The body portion 430 is at least partially positioned within the mounting slot 120.

The first indication portion 410 and the second indication portion 420 are disposed on the main body 430. When the body 430 moves in the mounting groove 120, the first indication portion 410 and the second indication portion 420 can be driven to move, so that the position of the first indication portion 410 or the second indication portion 420 corresponds to the indication window 110.

The first abutting portion 440 is fixedly disposed on the body portion 430. The first abutting portion 440 may be integrally formed with the body portion 430, and the first abutting portion 440 may be separately formed with the body portion 430 and then be engaged with the clamping groove through a clamping block. The pushing portion 331 is disposed on the pushing member 330, and the pushing portion 331 can rotate along with the pushing member 330.

When the leakage breaker fails, the moving contact assembly 300 is driven by the leakage tripping mechanism 200 to rotate, and the pushing portion 331 rotates along with the pushing member 330 in the moving contact assembly 300, and the pushing portion 331 drives the first abutting portion 440 disposed on the rotating path of the pushing portion 331 to move rightward in the illustrated direction during the rotation, so that the second indication portion 420 corresponds to the indication window 110.

Through the arrangement, the pushing part 331 is arranged on the moving contact assembly 300, so that the problem that the moving contact assembly 300 needs to be directly used for pushing the first abutting part 440 to enable the indicating structure 400 to move is solved, the moving contact assembly 300 and the first abutting part 440 are arranged in a staggered mode, the space layout inside the residual current circuit breaker is more reasonable, and the space inside the residual current circuit breaker is saved.

Fig. 9 is a schematic structural diagram of an indication structure according to an embodiment of the present application under a view angle. Fig. 10 is a schematic structural diagram of an indication structure according to an embodiment of the present application at another view angle. As shown in fig. 9 and 10, the first contact portion 440 has a plate-like structure, and the largest plate surface of the first contact portion 440 faces the pushing portion 331.

The surface of the first abutment 440 may be a smooth surface. The surface of the first abutting portion 440 may also be provided with stripe-shaped protrusions or dot-shaped protrusions, and by the above arrangement, the friction force between the first abutting portion 440 and the abutting portion 331 may be increased, so that the abutting portion 331 may push the first abutting portion 440 to displace the indication structure 400, and the occurrence of a dislocation problem between the first abutting portion 440 and the abutting portion 331 due to too smooth surfaces of the first abutting portion 440 and the abutting portion 331 is avoided.

In summary, the first contact portion 440 has a plate-like structure, so that the thrust of the contact portion 331 can better act on the first contact portion 440, and the largest area of the plate surface of the first contact portion 440 faces the contact portion 331, so that the problem that the contact portion 331 and the first contact portion 440 are dislocated due to the excessively small area of the first contact portion 440 can be avoided, and the reliability of the leakage fault indication device is ensured.

As shown in fig. 3, 4 and 7, the pushing portion 331 is in contact with the first abutting portion 440 when the earth leakage breaker is operating normally.

With the above arrangement, since the pushing portion 331 is always in contact with the first abutting portion 440, when the leakage circuit breaker trips due to the leakage protection, the pushing portion 331 can push the first abutting portion 440 at the first time, so that the first indication portion 410 at the indication window 110 is switched to the second indication portion 420, which can effectively reduce the reaction time of the indication structure 400 and increase the sensitivity of the indication structure 400.

With continued reference to fig. 9 and 10, the indication structure 400 further includes an elastic portion 450, one end of the elastic portion 450 is connected to the body portion 430, and the other end of the elastic portion 450 abuts against a groove wall of the mounting groove 120, which is close to the moving contact assembly 300. When the earth leakage breaker is normally operated, the elastic portion 450 is in a free state. When the pushing portion 331 pushes the first abutting portion 440, the elastic portion 450 compresses the stored energy when the indication structure 400 moves in the mounting groove 120. When the pushing portion 331 releases the pushing of the first abutting portion 440, the elastic portion 450 releases elastic potential energy to reset the indication structure 400.

The elastic portion 450 may be a spring, a rubber balloon, or the like. The main body 430 has a notch at a side away from the indication window 110, and the elastic portion 450 is disposed at the notch of the main body 430. When the leakage breaker works normally, the first indication part 410 corresponds to the indication window 110 in position, and the elastic part 450 is in a normal state. When the earth leakage breaker generates the earth leakage protection, the moving contact assembly 300 rotates, the pushing portion 331 of the pushing member 330 pushes the first abutting portion 440, so that the indication structure 400 slides in the mounting groove 120, at this time, the second indication portion 420 corresponds to the indication window 110 in position, and the elastic portion 450 is compressed by the body portion 430. When the residual current circuit breaker returns to the normal state, the pushing portion 331 releases the pushing of the first abutting portion 440, and the elastic portion 450 releases the elastic potential energy to reset the body 430, and at this time, the first indication portion 410 corresponds to the indication window 110.

Through the above arrangement, the elastic part 450 is arranged on one side of the body part 430 far away from the first indication part 410 and the second indication part 420, and the body part 430 is reset by utilizing elastic potential energy generated by compression of the elastic part 450, so that the problem that the indication structure 400 needs to be reset manually after the leakage circuit breaker is subjected to leakage protection every time is solved. The purpose of automatic leakage indication is achieved.

Fig. 11 is a schematic view of a part of the internal structure of an earth leakage breaker when an earth leakage fault occurs in the embodiment of the present application. Fig. 12 is an enlarged view of a portion C in fig. 11. As shown in fig. 11 and 12, the electric leakage fault indication device further includes a spring 500, the spring 500 is connected to the electric leakage testing circuit of the electric leakage breaker, and the spring 500 is located on the rotating path of the moving contact assembly 300.

The indicating structure 400 further includes a second abutment 460. When the leakage circuit breaker generates a leakage fault and the moving contact assembly 300 rotates, the moving contact assembly 300 pushes the elastic sheet 500, so that one end of the elastic sheet 500, which is close to the indication structure 400, is abutted against the second abutting part 460.

The elastic sheet 500 is a thin metal sheet, and the elastic sheet 500 has elasticity. When the leakage breaker is placed as shown in fig. 11, a test button is arranged above the elastic sheet 500, when the leakage breaker needs to be tested, the test button is pressed, the elastic sheet 500 contacts with a metal sheet arranged in the space enclosed by the elastic sheet 500 under the action of the test button, and at the moment, the leakage breaker simulates the leakage state.

The shape of the second abutment 460 may be the same as that of the first abutment 440, and the second abutment 460 is provided on one side of the first abutment 440.

When the leakage breaker fails, the pushing member 330 drives the contact support 320 to rotate, so as to drive the moving contact 310 to separate from the static contact, and in the process of rotating the contact support 320, one end of the contact support 320, which is close to the elastic sheet 500, presses the elastic sheet 500, so that one end of the elastic sheet 500, which is close to the leakage tripping mechanism 200, is lifted, and one end of the elastic sheet 500, which is close to the leakage tripping mechanism 200, is abutted to the second abutting portion 460 after being lifted.

Through the above arrangement, the moving contact assembly 300 is utilized to rotate to deform the elastic sheet 500, so that the elastic sheet is abutted against the second abutting portion 460, and the limiting effect on the indication structure 400 can be enhanced under the condition that the abutting portion 331 limits the first abutting portion 440, so that the second indication portion 420 of the indication structure 400 can stably correspond to the indication window 110 in the electric leakage state.

In this application, shell fragment 500 not only can be used for the electric leakage circuit breaker to carry out the electric leakage test, and shell fragment 500 can also carry out spacingly to second butt portion 460, just so can make shell fragment 500 reach multiplexing effect, has reduced the locating part that additionally set up second butt portion 460, has reduced the manufacturing cost of electric leakage circuit breaker to the use of electric leakage circuit breaker inner space has been saved.

With continued reference to fig. 11 and 12, one end of the elastic sheet 500 near the indication structure 400 contacts with the plate surface with the largest area of the second contact portion 460.

Through the arrangement, the abutting area of the elastic sheet 500 and the second abutting portion 460 can be increased, the limiting effect of the elastic sheet 500 on the second abutting portion 460 is guaranteed, the problem of abutting failure caused by too small abutting area of the elastic sheet 500 and the second abutting portion 460 is avoided, and the limiting effect of the elastic sheet 500 on the indicating structure 400 is guaranteed.

As shown in fig. 1 and fig. 3, the present application further provides an electric leakage breaker, including an electric leakage fault indication device. The structure of the leakage fault indication device is described in detail in the previous embodiments, so that the disclosure is not repeated here.

The electric leakage fault indicating device is arranged in the electric leakage circuit breaker, the movable contact assembly is utilized to rotate to drive the indicating structure in the electric leakage fault indicating device to move, and the electric leakage fault can be timely and accurately indicated when electric leakage problems occur to the electrical equipment. The user can know whether the leakage breaker trips due to leakage at the first time, and the electrical equipment is maintained or replaced, so that the use safety of the electrical equipment is ensured, and meanwhile, the personal safety of the user is ensured.

Claims (10)

1. An electric leakage fault indicating device is applied to electric leakage circuit breaker, electric leakage circuit breaker includes the static contact, its characterized in that, electric leakage fault indicating device includes:

a housing provided with an indication window and a mounting groove;

the electric leakage tripping mechanism is fixedly arranged on the shell and comprises an action end;

the movable contact assembly is rotationally connected to the shell, is positioned on one side of the electric leakage tripping mechanism, which is close to the action end, and is linked with the action end; the movable contact assembly comprises a movable contact, and the movable contact is matched with the fixed contact;

the indication structure is arranged in the mounting groove and can move in the mounting groove, the indication structure is positioned on the same side of the electric leakage tripping mechanism and the moving contact assembly, the indication structure comprises a first indication part and a second indication part which are different from each other, and the first indication part is close to the electric leakage tripping mechanism relative to the second indication part;

when the residual current circuit breaker works normally, the first indication part is opposite to the indication window;

when the leakage circuit breaker has a leakage fault, the leakage tripping mechanism acts, and the action end drives the moving contact assembly to rotate so as to separate the moving contact from the fixed contact; and when the movable contact assembly rotates, the indicating structure is driven to move in the mounting groove, so that the second indicating part is opposite to the indicating window.

2. The leakage fault indication device of claim 1, wherein the color of the first indication location is different from the color of the second indication location.

3. The leakage fault indication device of claim 1, wherein one of the first indication portion and the second indication portion is provided with an indication groove, and the other of the first indication portion and the second indication portion is not provided with the indication groove.

4. A leakage fault indication device according to any one of claims 1 to 3, wherein the indication structure comprises a body portion and a first abutment portion connected to a side of the body portion facing away from the indication window;

the first indication part and the second indication part are arranged on one side of the body part facing the indication window;

a pushing part is arranged on one side of the movable contact assembly, facing the indication window, and the first pushing part is positioned on a rotating path of the pushing part;

when the electric leakage circuit breaker generates electric leakage faults, the pushing part pushes the first abutting part when the movable contact assembly rotates, so that the indication structure moves in the mounting groove.

5. The leakage fault indication device according to claim 4, wherein the first contact portion has a plate-like structure, and a plate surface having a largest area among the first contact portion faces the pushing portion.

6. The electrical leakage fault indication device according to claim 4, wherein the pushing portion is in contact with the first abutting portion when the electrical leakage breaker is operating normally.

7. The leakage fault indication device according to claim 4, wherein the indication structure further comprises an elastic portion, one end of the elastic portion is connected with the body portion, and the other end of the elastic portion abuts against a groove wall of the installation groove, which is close to the moving contact assembly;

when the leakage circuit breaker works normally, the elastic part is in a free state;

when the pushing part pushes the first abutting part and the indicating structure moves in the mounting groove, the elastic part compresses and stores energy; when the pushing part releases pushing of the first abutting part, the elastic part releases elastic potential energy so as to reset the indicating structure.

8. The electrical leakage fault indication device of claim 4, further comprising a spring connected in an electrical leakage test loop of the electrical leakage breaker, the spring being located on a rotational path of the moving contact assembly;

the indicating structure further comprises a second abutting part; when the electric leakage circuit breaker generates electric leakage faults, the moving contact assembly pushes the elastic sheet to enable one end, close to the indication structure, of the elastic sheet to be in butt joint with the second butt joint part.

9. The leakage fault indication device according to claim 8, wherein one end of the elastic sheet, which is close to the indication structure, is in contact with a plate surface with the largest area of the second abutting portion.

10. An earth leakage breaker comprising the earth leakage fault indicating device according to any one of claims 1 to 9.