CN218956743U - Test mechanism, leakage protection module and plug-in circuit breaker - Google Patents

Abstract

The utility model provides a test mechanism, includes shell, test circuit, circuit board, mutual-inductor and test button, and test button switches on or breaks off the breakpoint of test circuit, and test circuit passes the mutual-inductor and is connected with the circuit board, and the casing includes one end intercommunication and mutually perpendicular's first casing and second casing, test button sliding fit in the one end of first casing, and the other end of first casing and second casing intercommunication is kept away from to the one end of first casing, and test circuit and circuit board assemble in first casing, and the mutual-inductor is assembled in the second casing. According to the utility model, the first shell and the second shell are mutually vertical and are communicated, two assembly spaces are provided by the first shell and the second shell, and the mutual inductor is independently arranged in the second shell.

Description

Test mechanism, leakage protection module and plug-in circuit breaker

Technical Field

The utility model relates to the field of piezoelectric devices, in particular to a testing mechanism, a leakage protection module and a plug-in circuit breaker.

Background

The low voltage circuit breaker can be used for distributing electric energy and protecting overload and short circuit of the circuit and the power supply equipment, and can also be used for infrequent switching of the circuit and infrequent starting of the motor. The existing circuit breakers are divided into plug-in circuit breakers, fixed circuit breakers and drawer type circuit breakers according to the installation mode, wherein the use safety of electrical equipment can be effectively improved due to the use of the plug-in circuit breakers, and the plug-in circuit breakers are widely applied to industries such as communication and the like. However, the existing circuit breaker generally needs to have a leakage protection function, but the plug-in circuit breaker is limited by the size and the internal structure, so that the test mechanism is difficult to be arranged in the plug-in circuit breaker, and the plug-in circuit breaker is difficult to be matched with a proper accessory module, thus being unfavorable for the safe use of the plug-in circuit breaker.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art and provides a testing mechanism, a leakage protection module and a plug-in circuit breaker which are simple in structure and high in reliability.

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

the utility model provides a test mechanism, includes test circuit, circuit board, mutual-inductor and the test button that sets up in the casing, test button is used for switching on or breaking off the breakpoint of test circuit, and test circuit passes the mutual-inductor and is connected with the circuit board, the casing includes one end intercommunication and mutually perpendicular's first casing and second casing, test button sliding fit is in the one end of first casing, and the other end of first casing and second casing intercommunication is kept away from to the one end of first casing, and test circuit and circuit board assemble in first casing, and the mutual-inductor assembles in the second casing.

Further, the test loop comprises a first elastic conductive piece and a second elastic conductive piece, wherein the first end of the first elastic conductive piece and the first end of the second elastic conductive piece are opposite at intervals to form a break point of the test loop, and a wire penetrating through the transformer is connected between the second end of the first elastic conductive piece and the second end of the second elastic conductive piece.

Further, the first elastic conductive piece and the second elastic conductive piece are respectively positioned at two sides of the test button, a through groove is formed in the middle of the test button, and the first end of the first elastic conductive piece penetrates through the through groove to be matched with the first end of the second elastic conductive piece.

Further, the first elastic conductive piece and the second elastic conductive piece are torsion springs, the second end of the first elastic conductive piece, the first end and the second end of the second elastic conductive piece are respectively abutted to the first shell, and the first end of the first elastic conductive piece penetrates through the through groove and is opposite to the first end of the second elastic conductive piece at intervals.

Further, the test loop comprises a conductive column and a third elastic conductive piece, the conductive column is connected with the circuit board, a break point of the test loop is formed by the first end of the third elastic conductive piece and the conductive column at intervals, and the second end of the third elastic conductive piece is spliced with a jack of the circuit board.

Further, the middle part of the test button is provided with a through groove, the tail end of the first end of the third elastic conductive piece is inserted into the through groove, and the middle part of the first end of the third elastic conductive piece is opposite to the conductive column at intervals.

Further, the inner side wall of the first shell is provided with a third connecting shaft and a spring abutting part in a protruding mode, the third elastic conductive piece is a torsion spring, the spiral part of the third elastic conductive piece is sleeved on the third connecting shaft, and the middle part of the second end of the third elastic conductive piece is abutted to the spring abutting part.

Further, one end of the first shell is provided with a second assembly hole, the test button is slidably assembled in the second assembly hole, and a foolproof structure is arranged between the test button and the second assembly hole.

Further, the side wall protrusion of test button is equipped with prevents slow-witted portion, and one side of second pilot hole is equipped with prevents slow-witted portion complex and prevents slow-witted groove.

Further, the test button includes the button body, and the one end of button body is as pressing part and stretches out outside the first casing, is equipped with logical groove in the middle part of button body, outwards extends at the other end edge of button body and forms the limiting plate, or, the middle part of button body is equipped with the limiting plate along annular protrusion, outwards protrudes by the one side edge of limiting plate and forms foolproof portion.

Further, a wiring assembly matched with the transformer is further arranged in the second shell, and the wiring assembly comprises a first wiring piece matched with the circuit breaker and a second wiring piece connected with the external conductive piece.

The utility model also provides a leakage protection module which comprises the testing mechanism and the tripping mechanism, wherein the tripping mechanism is arranged in the first shell in a matched mode, and the tripping mechanism is connected with the circuit board.

The utility model also provides a plug-in circuit breaker, which comprises a circuit breaker body, wherein the leakage protection module is matched and arranged on one side of the circuit breaker body, the first shell and the second shell are respectively matched and arranged with one side of the circuit breaker body and one end of the circuit breaker body, and a linkage shaft of the circuit breaker body penetrates through the first shell to be matched with the tripping mechanism.

According to the testing mechanism, the leakage protection module and the plug-in circuit breaker applying the testing mechanism, the first shell and the second shell of the testing mechanism are mutually perpendicular and are communicated, the first shell and the second shell provide two assembly spaces, and the mutual inductor is independently arranged in the second shell.

In addition, the first end of the first elastic conductive piece can be matched with the first end of the second elastic conductive piece to form a breakpoint, and the first end of the first elastic conductive piece can be inserted into the through groove of the test button to provide reset force for the test button, so that an elastic piece matched with the test button can be omitted, and the test button has the advantage of being simple in structure. In addition, the first end of the third elastic conductive piece can be matched with the conductive column to form a breakpoint, can be inserted into the through groove of the test button to provide reset force for the test button, can omit an elastic piece matched with the test button, and has the advantage of simple structure.

In addition, set up the slow-witted structure of preventing mutually supporting between test button and the first casing, avoid test button to assemble not in place.

Drawings

Fig. 1 is a schematic view of an assembly structure of a leakage protection module and a circuit breaker according to the present utility model (first embodiment);

fig. 2 is a schematic view of the structure of the earth leakage protection module and the circuit breaker when separated (first embodiment);

fig. 3 is a schematic structural view of a side of the earth leakage protection module and the circuit breaker according to the present utility model (first embodiment);

FIG. 4 is an enlarged partial schematic view of the portion A of FIG. 3 (first embodiment);

FIG. 5 is a schematic structural view of the first housing and the second housing according to the present utility model (first embodiment);

FIG. 6 is an enlarged partial schematic view of portion A of FIG. 5;

fig. 7 is a schematic diagram of a first layout structure of the transformer according to the present utility model (first embodiment);

FIG. 8 is a cross-sectional view of a transformer of the present utility model;

fig. 9 is a schematic diagram of a second layout structure of the transformer according to the present utility model (first embodiment);

fig. 10 is a schematic view of the internal structure of the first housing (first embodiment) in the present utility model;

fig. 11 is a schematic view of the structure of the trip mechanism in the home position (first embodiment) in the present utility model;

fig. 12 is a schematic view of the structure of the trip mechanism in the present utility model (first embodiment) when the trip unit is actuated;

fig. 13 is a schematic view of a trip mechanism of the present utility model (first embodiment) for preventing erroneous closing;

FIG. 14 is a schematic view of the structure of the rotating member and the linkage shaft according to the present utility model (first embodiment);

fig. 15 is a schematic structural view of a trip unit according to the present utility model (first embodiment);

FIG. 16 is a schematic view of the structure of the rotary member of the present utility model (first embodiment);

FIG. 17 is a schematic view of the structure of the indicator of the present utility model (first embodiment);

FIG. 18 is a schematic view of the structure of the test button of the present utility model (first embodiment);

FIG. 19 is a schematic view of a second connector of the present utility model;

fig. 20 is a schematic view of the assembly of the earth leakage protection module and the circuit breaker of the present utility model (second embodiment);

fig. 21 is a schematic view of the structure of the earth leakage protection module of the present utility model when separated from the circuit breaker (second embodiment);

fig. 22 is a schematic view of the structure of the side of the earth leakage protection module and the circuit breaker of the present utility model (second embodiment);

FIG. 23 is an enlarged partial schematic view of portion A of FIG. 22;

FIG. 24 is a schematic view of the structures of the first housing and the second housing (second embodiment) of the present utility model;

fig. 25 is a schematic view of the structure of the first housing in the present utility model (second embodiment);

fig. 26 is a schematic structural view of a second housing in the present utility model (second embodiment);

fig. 27 is a schematic view of the structure of the trip mechanism and the test mechanism of the present utility model (second embodiment);

fig. 28 is a schematic structural view of the trip mechanism in the present utility model (second embodiment);

fig. 29 is a schematic view showing the structure of the rotor engaged with the coupling shaft in the present utility model (second embodiment);

fig. 30 is a schematic diagram of the layout structure of the transformer in the present utility model (second embodiment);

fig. 31 is a schematic structural view of a trip unit according to the present utility model (second embodiment);

FIG. 32 is a schematic view of the structure of the rotary member of the present utility model (second embodiment);

FIG. 33 is a schematic view of the structure of the indicator of the present utility model (second embodiment);

FIG. 34 is a schematic view of the structure of one end of the indicator of the present utility model (second embodiment);

fig. 35 is a schematic structural view of a test button in the present utility model (second embodiment).

Detailed Description

Embodiments of the test mechanism, the earth leakage protection module, and the plug-in circuit breaker of the present utility model are further described below with reference to the examples shown in fig. 1-35. The test mechanism, the earth leakage protection module, and the plug-in circuit breaker of the present utility model are not limited to the description of the following embodiments.

As shown in fig. 1-13 and 20-29, a leakage protection module comprises a shell, a tripping mechanism and a testing mechanism are assembled in the shell, wherein the tripping mechanism comprises a tripper 11, a rotating member 12, an indicating member 13, a circuit board 15 and a mutual inductor 21, the tripper 11 and the mutual inductor 21 are respectively connected with the circuit board 15 and assembled in the shell, the indicating member 13 is slidingly assembled in the shell, the mutual inductor 21 is used for acquiring a current signal and feeding the current signal back to a microcontroller connected to the circuit board 15, the microcontroller judges whether fault current exists according to the current signal, the rotating member 12 is rotatably assembled between a movable iron core 114 and an elastic member 13 of the tripper 11, two ends of the rotating member 12 are respectively matched with the elastic member 13 and the movable iron core 114, when the leakage fault occurs, the microcontroller outputs a control signal to drive the tripper 11 to act, and the movable iron core 114 of the tripper 11 drives the rotating member 12 to rotate, so that the elastic member 13 is triggered to indicate the fault. The test mechanism comprises a test loop, a circuit board 15, a mutual inductor 21 and a test button 161, wherein the test loop and the mutual inductor 21 are respectively connected with the circuit board 15 and assembled in the shell together, the test button 161 is assembled in the shell in a sliding way, the break point of the test loop can be switched on or off by operating the test button 161, after the test loop is switched on, the mutual inductor 21 detects the simulated leakage current, and the microcontroller of the circuit board 15 outputs an action signal to enable the release 11 to act, wherein the release mechanism and the test mechanism preferably share the mutual inductor 21 and the circuit board 15.

The improvement point of this application lies in that the casing includes first casing 1a and second casing 2a, wherein first casing 1a and second casing 2a mutually perpendicular just keep the intercommunication, in first casing 1a equipment tripping device and/or testing mechanism, mutual-inductor 21 is arranged in the second casing 2a in addition, this kind of dispersion sets up and possesses simple structure's advantage, can reduce the overall arrangement complexity of tripping device, and can reduce or attenuate first casing 1a or second casing 2a that corresponds, avoid taking up more space, simultaneously, when earth leakage protection module cooperates with circuit breaker 3, first casing 1a and second casing 2a cooperate with two different lateral walls of circuit breaker 3 respectively, that is first casing 1a, second casing 2a sets up along one side of circuit breaker, the one end of circuit breaker respectively, both can protect circuit breaker 3, also improved the cooperation stability with circuit breaker 3.

Further, as shown in fig. 7-9 and 30, the wiring assembly 22 is also disposed in the second housing 2a to facilitate connection with the transformer 21 and also to facilitate connection with the plug-in circuit breaker 3.

Preferably, as shown in fig. 5, 6 and 24, the first casing 1a and the second casing 2a are detachably assembled to form a casing of the earth leakage protection module.

The sliding groove a1 and the sliding part a2 which are matched with each other are arranged between the first shell 1a and the second shell 2a, and the first shell 1a and the second shell 2a are detachably connected through the matching of the sliding groove a1 and the sliding part a2, so that the processing and the assembling difficulty of the first shell 1a and the second shell 2a are simplified.

As shown in fig. 5 and 6, the first housing 1a is connected to one end of the second housing 2a, the end of the first housing 1a connected to the second housing 2a is in the length direction of the first housing 1a, the end of the second housing 2a connected to the first housing 1a is in the length direction of the second housing 2a, the end of the first housing 1a connected to the second housing 2a is provided with a sliding slot a1 and a sliding portion a2 in a matching manner, and the sliding slot a1 and the sliding portion a2 are both arranged along the length direction of the second housing 2a, that is, the second housing 2a is arranged in the horizontal direction of the second housing 2a (see the direction of fig. 3), so that the first housing 1a and the second housing 2a can be slidingly assembled and disassembled along the horizontal direction of the second housing 2a, wherein the sliding slot a1 and the sliding portion a2 can be simultaneously arranged on the first housing 1a or the sliding portion a2, and the sliding portion a2 are cooperatively arranged on the second housing 2 a. In addition, by engaging the slide groove a1 with the slide portion a2, the first casing 1a and the second casing 2a may be mounted and dismounted in a sliding manner along the longitudinal direction of the first casing 1a, that is, along the vertical direction (see the direction of fig. 3) of the first casing 1 a.

Of course, it is also possible to adopt other structures to make the first casing 1a and the second casing 2a cooperate to form detachable connection, and a buckle a3 and a clamping groove a4 which are mutually matched are arranged between the first casing 1a and the second casing 2a, and the first casing 1a and the second casing 2a are made to form detachable connection through the clamping cooperation of the buckle a3 and the clamping groove a4, so that the processing and assembling difficulties of the first casing 1a and the second casing 2a are simplified.

As shown in fig. 24, the end, connected to the second housing 1a, of the first housing 1a is in the length direction of the first housing 1a, the end, connected to the first housing 1a, of the second housing 2a is in the length direction of the second housing 2a, the end surface, open at one end, of the first housing 1a forms a first notch, the end surface, open at one end, of the second housing 2a forms a second notch, the first notch and the second notch are abutted to enable the first housing 1a to be kept in communication with the interior of the second housing 2a, a buckle a3 and a clamping groove a4 are disposed at the edge of the first notch and the second notch in a matching manner, so that the first housing 1a and the second housing 2a are clamped in the length direction of the first housing 1a, that is, in the vertical direction (the direction of fig. 24 a is seen in the direction of fig. 24), of the first housing 1a is clamped in the vertical direction of the first housing 1a, and of course, when the setting position of the buckle a3 and the clamping groove a4 is changed, the first housing 1a and the second housing 2a are clamped in the length direction of the second housing 2a, the first housing 1a and the second housing 2a can also be clamped in the same, that the first housing 1a and the second housing 2a are clamped in the length direction, or the number of the first housing 1a and the second housing 2a can be clamped in the horizontal direction (the single buckle 3 a and the first notch and the clamping groove 4 a3 or the single notch or the first notch 4 a3 and the single notch or the first notch 4) are also arranged.

In connection with fig. 1-19, a first embodiment of a leakage protection module is provided, the leakage protection module comprises a housing, a tripping mechanism and a testing mechanism, wherein the tripping mechanism and the testing mechanism are assembled in the housing, the housing is formed by vertically splicing a first housing 1a and a second housing 2a, the whole housing is in an L-shaped structure, in the embodiment, the first housing 1a is communicated with one end of the second housing 2a, preferably, the length of one side of the first housing 1a facing the second housing 2a is equal to the length of the circuit breaker 3, and the length of one side of the second housing 2a facing the first housing 1a is equal to the width of the circuit breaker 3.

As shown in fig. 1-3, 5 and 7-13, the whole of the first casing 1a and the second casing 2a presents a cuboid, the first casing 1a is preferably formed by covering a first cover 1ab and a first base 1aa, the first cover 1ab is opposite to and correspondingly matched with one side of the circuit breaker 3, the length direction of the first cover 1ab is consistent with the length direction of the circuit breaker 3, wherein the first cover 1ab and the first base 1aa can form detachable connection with a clamping groove through a buckle, the second casing 2a is formed by matching a second cover 2ab of the second base 2aa and the second base 2aa, the second cover 2ab is matched with the circuit breaker 3, the length direction of the second cover 2ab is consistent with the width direction of the circuit breaker 3, the second cover 2ab and the second base 2aa can also form detachable connection with a clamping groove through a buckle matched with each other, one end of the first casing 1a and the second casing 2a is provided with a notch, that is, a gap is formed at one end of the first cover 1ab of the first housing 1a and one end of the second cover 2ab of the second housing 2a, after the first housing 1a is assembled with the second housing 2a, the gap of the first housing 1a and the gap of the second housing 2a are butted to keep the interior communicating, a sliding groove a1 and a sliding part a2 are arranged at one end part of the first housing 1a communicated with the second housing 2a in a matched manner, that is, a sliding groove a1 and a sliding part a2 which are matched with each other are arranged at the inner side walls of the first housing 1a and the second housing 2a corresponding to the gaps (that is, the inner side walls of the first base 1aa and the second base 2 aa) are arranged, so that the first housing 1a and the second housing 2a are in a sliding fit along the length direction of the second housing 2a (the horizontal direction of the second housing 2 a), thereby realizing the sliding and the disassembly of the first housing 1a and the second housing 2a, that is arranged at the inner side of one end part of the first housing 1a in fig. 5 and 6, at this time, the sliding groove a1 forms the sliding portion a2 on the side wall edge of the first housing 1a, the sliding groove a1 is also formed on the side of the end portion of the second housing 2a, the sliding portion a2 is formed on the side wall of the second housing 2a on the side of the sliding groove a1, the sliding grooves a1 of the first housing 1a and the second housing 2a are slidably engaged with the sliding portion a2, so that the first housing 1a and the second housing 2a slide along the length direction of the second housing 2a (the horizontal direction of the second housing 2 a), and the number of the sliding portions a2 and the sliding grooves a1 can be adjusted according to practical situations.

As shown in fig. 10-13, a first assembly hole 1a5 and a second assembly hole 1a6 are formed in the module operation surface of the first casing 1a, that is, the first assembly hole 1a5 and the second assembly hole 1a6 are formed in the end, far away from the end, communicating with the second casing 2a, of the first casing 1a, a plurality of ribs are convexly arranged in the middle of the first casing 1a, the plurality of ribs are mutually matched in the middle of the first casing 1a to form a release installation groove 1a3, as shown in fig. 10, the release installation groove 1a3 is an incompletely closed rectangular frame, and the release installation groove 1a3 corresponds to the second assembly hole 1a6; the middle part of the first shell 1a is convexly provided with a first limiting rib 1a4, the first limiting rib 1a4 is positioned on one side of the release mounting groove 1a3 far away from the second assembly hole 1a6, and a gap is reserved between the first limiting rib 1a4 and the release mounting groove 1a 3.

As shown in fig. 10-13, an elastic member 13 of a trip mechanism, a trip 11, a rotating member 12 and a circuit board 15 are assembled in a first housing 1a, a transformer 21 of the trip mechanism is assembled in a second housing 2a, wherein the elastic member 13 is assembled in an end of the first housing 1a far away from the communication with the second housing 2a, that is, the elastic member 13 is assembled in a first assembly hole 1a5 in a sliding manner, the circuit board 15 is arranged in an end of the first housing 1a close to the second housing 2a, that is, the circuit board 15 is arranged at one end of the first housing 1a opposite to the indicator 13 in a stacking manner, the trip 11 and the transformer 21 are respectively connected with the circuit board 15, the trip 11 is arranged in a trip mounting groove 1a3 between the elastic member 13 and the circuit board 15, a movable iron core 114 of the trip 11 is positioned at one side opposite to the second assembly hole 1a6, the rotating member 12 is assembled in a rotating manner between the movable iron core 114 of the trip 11 and the elastic member 13, two ends of the rotating member 12 are respectively matched with the elastic member and the movable iron core 114, in this embodiment, the first end 12 is matched with the movable iron core 114 in a limited extent that the first end 12 is in a limited by the first end 1a and the movable iron core 114 is in a limited by the first end 1 and the gap between the movable iron core 114 and the first end 12 and the rotating member 3 and the movable iron core 12 is limited by the first end 4 and the movable iron core 114, and the fault-stop bar 1 is limited by the rotating fault-stop bar 1; as shown in fig. 11 to 13, the transformer 21 connected to the circuit board 15 and the wiring assembly 22 mated with the transformer 21 are assembled in the second housing 2a, the wiring assembly 22 includes the first wiring member 221 mated with the circuit breaker 3 and the second wiring member 222 mated with the external lead, respectively, the transformer 21 may be disposed at one end of the second housing 2a or in the middle of the second housing 2a, the transformer 21 of this embodiment is disposed in the middle of the second housing 2a, and the central axis of the transformer 21 may be parallel to the length direction of the first housing 1a (the vertical direction of the first housing 1a in fig. 8), of course, the central axis of the transformer 21 may also be perpendicular to both the length direction of the first housing 1a and the length direction of the second housing 2a, that is, both the vertical direction of the first housing 1a and the horizontal direction of the second housing 2a, and the specific setting of the transformer 21 is adjusted according to practical situations.

In this embodiment, the elastic member 13 is provided with a mating portion 131, the rotating member 12 is respectively connected with the movable iron core 114 of the release 11 and the elastic member 13 in a linkage manner, as shown in fig. 11-16, specifically, a first end of the rotating member 12 is provided with a first linkage groove 1211, a first end of the movable iron core 114 passes through the first linkage groove 1211 and is connected with the rotating member 12 in a linkage manner, a second linkage groove 1221 and an abutting portion 1222 are provided at a second end of the rotating member 12, when no leakage fault occurs, the mating portion 131 is in plug-in mating with the second linkage groove 1221 (see fig. 11 and 14), after the leakage fault occurs, the mating portion 131 is separated from the second linkage groove 1221 (see fig. 12), and the mating portion 131 can be mated with the abutting portion 1222 (see fig. 13) to limit the rotating member 12 to rotate, preferably, the first end of the movable iron core 114 is limited in the first linkage groove 1211 and can slide along the length direction of the first linkage groove 1211, preferably, one end 1212 of the first linkage groove 1211 is increased in inner diameter to form a disassembly hole, and when the inner diameter of the first linkage groove 1212 is larger than the inner diameter of the first linkage groove 1211 is equal to the outer diameter of the movable iron core 114, and the outer diameter of the movable iron core 114 is equal to the outer diameter of the first linkage groove 1211, when the outer diameter of the movable iron core 114 is greater than the outer diameter of the movable iron core 114 is equal to the outer diameter of the movable iron core 114 and 114, and the outer diameter of the movable iron core 114 is convenient to the outer diameter of the linkage of the movable iron core 114.

In combination with fig. 11-13 and 17, providing a specific structure of the elastic member 13, the elastic member 13 comprises an indicator body and a button spring 135, wherein the indicator body is slidably assembled in the first assembling hole 1a5, one end of the indicator body is used as an indicator portion 134 to extend out of the first housing 1a, a containing slot 1320 for assembling the button spring 135 is arranged in the middle of the indicator body, a driving hole is formed in the side wall of the indicator body, a driving portion 1a21 arranged on the inner side wall of the first housing 1a passes through the driving hole and is used for pressing the button spring 135, one end of the containing slot 1320 close to the indicator portion 134 is in limited abutting connection with one end of the button spring 135, one end of the containing slot 1320 far from the indicator portion 134 is provided with the driving hole, or, as shown in fig. 11, one end of the containing slot 1320 far from the indicator portion 134 is used as the driving hole, the other end of the button spring 135 is abutted with the driving portion 1a21 extending into the driving hole, by pressing the indicator 13, the indicator 13 and the driving part 1a21 press the button spring 135 together, the elastic deformation of the button spring 135 provides an elastic restoring force for the indicator 13, the other end of the indicator body bends outwards to extend to form a bent rod-shaped matching part 131, in fig. 11 and 17, the matching part 131 comprises a straight section 1311 and a bent end 1312, the bent end 1312 is in plug-in matching with the second linkage groove 1221 of the rotating member 12, the straight section 1311 is parallel to the pressing direction of the elastic member 13, preferably the straight section 1311 can slide along the side wall on one side of the trip mounting groove 1a3, a guiding effect can be provided for pressing the button member, meanwhile, when the abutting part 1222 abuts against the matching part 131, the side wall on one side of the trip mounting groove 1a3 can further limit the indicator 13, the matching stability of the indicator 13 and the rotating member 12 is enhanced, of course, the straight section 1311 may not be matched with the side wall of the trip unit mounting groove 1a3, or the straight section 1311 may not be provided, and the first mounting hole 1a5 may limit the indicator 13. The shape of the indicator body is not limited to the above-described shape.

The specific structure of the rotating member 12 in this embodiment is provided in conjunction with fig. 11-14 and 16, where the rotating member 12 includes a rotating connecting portion 123, a first rotating arm 121 and a second rotating arm 122, preferably, the rotating connecting portion 123 is integrally formed with the first rotating arm 121 and the second rotating arm 122, in fig. 16, the rotating connecting portion 123 is cylindrical, the rotating connecting portion 123 is rotationally connected with the first housing 1a, the first rotating arm 121 is connected to one side of the rotating connecting portion 123 as a first end of the rotating member 12, a first linkage groove 1211 is formed in the middle of the first rotating arm 121, an end inner diameter of the first linkage groove 1211 is increased to form a disassembly hole 1212, so that the first linkage groove 1211 is integrally formed as a bar-shaped groove with a thick end and a thin end, and the thicker end of the first linkage groove 1211 is far away from the rotating connecting portion 123, that is, the disassembly hole 1212 is located at an end far from the rotating connecting portion 123, and the thinner end of the first linkage groove 1211 is close to the rotating connecting portion 123; the second rotating arm 122 is connected to the other side of the rotating connection portion 123 as a second end of the rotating member 12, in fig. 16, the length of the second rotating arm 122 is greater than that of the first rotating arm 121, the middle portion of the second rotating arm 122 is bent to form a curved arm, a second linkage groove 1221 is formed in the middle portion of the second rotating arm 122, and a side wall of the second rotating arm 122 away from the rotating connection portion 123 is used as an abutting portion 1222.

Referring to fig. 11-15, there is provided a specific structure of the release 11 according to the present embodiment, the release 11 includes a yoke 111, a frame 112, a coil, a movable iron core 114, and a stationary iron core 113, wherein the yoke 111 is fixedly mounted at one end of the frame 112, the coil is wound around the outer side of the frame 112, the movable iron core 114 and the stationary iron core 113 are respectively mounted at two ends of the middle part of the frame 112, wherein the stationary iron core 113 is mounted at one end of the frame 112 provided with the yoke 111, the stationary iron core 113 is located at one end of the frame 112 facing the second mounting hole 1a6, the movable iron core 114 is located at one end facing away from the second mounting hole 1a6, in which the first end of the movable iron core 114 extends outside the frame 112, that is, the first end of the movable iron core 114 extends from the right end of the frame 112 in the figure, the first end of the movable iron core 114 is closest to the end position with the diameter being thinnest, the thinnest part of the outer diameter of the movable iron core 114 is smaller than or equal to the inner diameter of the first linkage groove 1211 far away from one end of the disassembly hole 1212, the inner diameter of the disassembly hole 1212 is larger than or equal to the outer diameter of the first end part of the movable iron core 114, after the first end of the movable iron core 114 passes through the first linkage groove 1211, the first end of the movable iron core 114 is in sliding fit with the area of the first linkage groove 1211 far away from the disassembly hole 1212, at the moment, the first end part of the movable iron core 114 is clamped with the first linkage groove 1211 far away from one end of the disassembly hole 1212, the movable iron core 114 and the rotating piece 12 are prevented from falling, and an iron core spring is connected between the movable iron core 114 and the static iron core 113, namely, an iron core spring is connected between the second end of the movable iron core 114 and the static iron core 113.

As shown in fig. 11, a test button 161 and a test circuit are further disposed in the first housing 1a, wherein the test button 161 is slidably disposed at an end of the first housing 1a far from communicating with the second housing 2a, that is, the test button 161 is assembled in the second assembly hole 1a6, preferably, a foolproof structure is disposed between the test button 161 and the second assembly hole 1a6 to ensure that the test button 161 is properly assembled in the second assembly hole 1a6, the test button 161 is used for switching on or off a breakpoint of the test circuit, the test circuit passes through the transformer 21 and is connected with the circuit board 15, and after the test circuit is switched on, the transformer 21 obtains an analog leakage signal and outputs an action signal to actuate the release 11.

In this embodiment, the test circuit includes a first elastic conductive element 1621 and a second elastic conductive element 1622, as shown in fig. 11, where a break point of the test circuit is formed by the first end of the first elastic conductive element 1621 and the first end of the second elastic conductive element 1622 opposite to each other, a wire passing through the transformer 21 is connected between the second end of the first elastic conductive element 1621 and the second end of the second elastic conductive element 1622, preferably, the first elastic conductive element 1621 and the second elastic conductive element 1622 are torsion springs, the first elastic conductive element 1621 and the second elastic conductive element 1622 are respectively located at two sides of the test button 161, a through slot 1611 is provided in the middle of the test button 161 (see fig. 18), the first end of the first elastic conductive element 1621 passes through the through slot 1611 and forms a break point with the first end of the second elastic conductive element 1622, in fig. 11, the second end of the first elastic conductive element 1621 abuts against the inner side of the first housing 1a, so that the first end of the first conductive element 1621 can also provide a reset force for the test button 161, and the first elastic conductive element 1621 can be omitted, and the first elastic conductive element 1621 and the first elastic conductive element can be further included between the first elastic conductive element and the first conductive element 1621 and the first elastic conductive element 161 can be omitted, and the first elastic conductive element can be further tested by the preferred structure; the second end of the second elastic conductive element 1622 abuts against the inner sidewall of the first housing 1a, and in this embodiment, the second end of the second elastic conductive element 1622 abuts against the edge of the driving portion 1a 21.

Referring to fig. 18, a specific structure of a test button 161 is provided, the test button 161 includes a button body, the button body is an oval column, one end of the button body is used as a pressing portion 1614 to extend out of a first housing 1a, a through slot 1611 is provided in the middle of the button body, a first end of a first elastic conductive element 1621 may pass through the through slot 1611, an edge of the other end of the button body extends outwards to form a limiting plate 1612, the limiting plate 1612 is in a rectangular plate structure, an edge of one side of the limiting plate 1612 protrudes outwards to form a foolproof portion 1613, and a foolproof slot matched with the foolproof portion 1613 is provided on a hole wall of a second assembly hole 1a6, so as to ensure uniqueness of a direction when the test button 161 is assembled.

As shown in fig. 1-3, a plug-in circuit breaker 3 includes a casing 3a and a circuit breaker body assembled in the casing 3a, a leakage protection module of the above embodiment is disposed at one side of the casing 3a, wherein the first casing 1a and the second casing 2a are respectively attached to one side of the circuit breaker body and one end of the circuit breaker body, that is, the first casing 1a of the leakage protection module is disposed along the length direction of the circuit breaker 3, the length direction of the circuit breaker 3 is the vertical direction of the first casing 1a, the second casing 2a of the leakage protection module is disposed along the width direction of the circuit breaker 3, the width direction of the circuit breaker 3 is the horizontal direction of the second casing 2a, the height direction of the circuit breaker 3 is perpendicular to the length direction of the first casing 1a and the length direction of the second casing 2a, preferably, the leakage protection module forms detachable connection with the casing 3a through the casing, that is preferably, for example, the casing is in a detachable connection with the casing 3a, the casing 3a is convenient to make the circuit breaker 3, the second casing 2a is also in the width direction of the circuit breaker 3a, the sliding table 1a is provided with a 3a, the sliding table 11 is provided with a 3a, and the limiting groove 11 is provided with a, the limiting groove 11 is provided with the limiting groove 11, and the limiting groove is provided with the limiting groove 11 a and the limiting groove 11 a is provided with the limiting groove 2a and the limiting groove 11 a is 3 a.

In this embodiment, the circuit breaker body includes at least one circuit breaker pole, each circuit breaker pole includes a connection terminal, a handle mechanism, an operating mechanism and a contact mechanism, wherein the connection terminal is electrically connected with a first connection piece 221 of the leakage protection module, a main line of the circuit breaker 3 connected between the connection terminals passes through the transformer 21, a current signal of the main line is obtained by the transformer 21, the leakage protection module can take electricity from the main line of the circuit breaker 3, and a connection assembly arranged in the second housing 2a is connected with the connection terminal of the circuit breaker 3 at this time, and of course, the leakage protection module can also supply power independently; the handle mechanism, the operating mechanism and the moving contact of the contact mechanism are sequentially connected in a linkage mode, the operating mechanism comprises a lever, a jump buckle and a lock catch, the lever is assembled in the shell 3a in a rotating mode, the jump buckle and the lock catch are assembled on the lever in a rotating mode respectively, one end of the jump buckle is connected with one end of the lock catch in a locking mode, preferably, a linkage shaft 32 is connected to the lock catch, the linkage shaft 32 penetrates through the shell 3a and the side wall of the first shell 1a to extend into the first shell 1a to be matched with the rotating piece 12, as shown in fig. 2, 3 and 5, a linkage hole 1a1 is formed in the middle of the first shell 1a, namely, a linkage hole 1a1 is formed in the middle of the first cover 1ab, and the linkage hole 1a1 is a kidney-shaped hole and is located on the swinging track of the rotating piece 12.

The matching process of the leakage protection module and the breaker body is specifically as follows:

in the normal operation state of the circuit breaker body, the earth leakage protection module is kept in an original state, at this time, the tripping mechanism is in the original state, as shown in fig. 11 and 14, the first end of the movable iron core 114 is abutted against the first limit rib 1a4, the first end of the rotating member 12 is linked with the first end of the movable iron core 114 and abutted against one side of the first limit rib 1a4, the matching part 131 of the elastic member 13 is in plug-in matching with the second linkage groove 1221 of the rotating member 12, and the button spring 135 stores energy; after the leakage fault occurs or the test loop is connected, the mutual inductor 21 detects a leakage current signal or an analog leakage current signal, the microcontroller outputs an action signal, the release 11 drives the first end of the movable iron core 114 to move to the bottom in the left direction in the drawing after being electrified and sucked, and drives the rotating member 12 to rotate clockwise, at this time, as shown in fig. 13, the matching part 131 of the elastic member 13 is separated from the second linkage groove 1221, the indicating part 134 of the elastic member 13 pops up outside the first shell 1a to indicate the leakage fault, and meanwhile, the second end of the rotating member 12 drives the linkage shaft 32 to trip and power off the operating mechanism; after the release 11 is powered off, the movable iron core 114 moves to the right under the action of the counter force of the iron core spring to drive the rotating member 12 to rotate anticlockwise, at this time, as shown in fig. 14, the abutting part 1222 of the rotating member 12 abuts against the matching part 131 of the elastic member 13, and the second end of the rotating member 12 can be blocked on the reset path of the linkage shaft 32 while the rotating member 12 is limited to rotate, so that the breaker 3 is prevented from being switched on under the condition that the leakage fault is not removed or the test loop is not disconnected; after the leakage fault is removed or the test loop is disconnected, the elastic piece 13 is pressed to overcome the button spring 135, the matching portion 131 of the elastic piece 13 slides into the second linkage groove 1221 along the abutting portion 1222, meanwhile, the iron core spring 115 drives the movable iron core 114 to continue to reset, so that the matching portion 131 and the second linkage groove 1221 are in plug-in matching again, and the tripping mechanism resets.

An embodiment of a second leakage protection module is provided in connection with fig. 20-35, where the leakage protection module includes a housing, and a tripping mechanism and a testing mechanism assembled in the housing, and the housing is formed by vertically splicing a first housing 1a and a second housing 2a, so that the housing as a whole has an L-shaped structure, and is communicated with one end of the second housing 2a by the first housing 1a, preferably, the length of one side of the first housing 1a facing the second housing 2a is equal to the length of the circuit breaker 3, and the length of one side of the second housing 2a facing the first housing 1a is equal to the width of the circuit breaker 3.

In this embodiment, the whole of the first housing 1a and the second housing 2a is L-shaped, the first housing 1a includes a first base 1aa and a first cover 1ab that are mutually covered, the first cover 1ab is opposite to and correspondingly matched with one side of the circuit breaker 3, the length direction of the first cover 1ab is consistent with the length direction of the circuit breaker 3, preferably, the first base 1aa and the first cover 1ab form detachable connection with the clamping groove through a buckle, wherein one end of the first base 1aa is bent along the direction deviating from the first cover 1ab to form a first protruding part 1aa1, the end surface of the first protruding part 1aa is opened to form a first notch, the second housing 2a includes a second base 2aa and a second cover 2ab that are mutually covered, the length direction of the second cover 2ab is consistent with the width direction of the circuit breaker 3, preferably, the second cover 2aa and the second base 2aa form detachable connection with the clamping groove through the buckle, wherein the end part 2aa is close to the end surface of the second base 2aa and extends to the side edge of the first base 2aa to form a notch, the first notch is arranged on the side of the first housing 2a, the first notch is opened to the side surface of the second housing 2aa is arranged on the side of the first housing 4 a, and the first notch is opened to the side of the first notch is formed on the side of the first notch is opened to the side of the first housing 2a side of the first notch is connected with the first notch 4 a, and the first notch is opened to the side of the first notch is formed on the side of the first housing 2aa is opened.

In addition, in this embodiment, in fig. 24, one end of the first cover body 1ab extends downward to form a mating sidewall 1ab1, the mating sidewall 1ab1 extends beyond the end face of the first protruding portion 1aa1, correspondingly, a mating groove 2aa2 is provided on one side of the second protruding portion 2aa1 in a mating manner, the mating groove 2aa2 may be slidably mated with an edge of the mating sidewall 1ab1, and further, a buckle a3 and a slot a4 are provided on the edge of the mating groove 2aa2 and one end of the mating sidewall 1ab1 far from the first housing 1a in a mating manner, so as to facilitate improvement of mating stability. Of course, the edge of the first cover 1ab may be flush with the end surface of the first protruding portion 1aa1, and the engaging groove 2aa2 is not required to be provided on the side wall of the second protruding portion 2aa 1. In the present embodiment, screw holes and self-tapping screws fitted into the screw holes may be disposed in the first housing 1a and the second housing 2a to enhance the connection stability of the first housing 1a and the second housing 2 a.

As shown in fig. 25, a first assembly hole a5 and a second assembly hole 1a6 are formed in the module operation surface of the first casing 1a, a first assembly hole 1a5 and a second assembly hole 1a6 are formed in parallel at one end of the first casing 1a far away from the second casing 2a, a plurality of ribs are convexly arranged at the middle part of the first casing 1a close to the second casing 2a, the plurality of ribs are mutually matched at the middle part of the first casing 1a to form a release mounting groove 1a3, as shown in fig. 25, the release mounting groove 1a3 is a closed rectangular frame as a whole, and the release mounting groove 1a3 corresponds to the second assembly hole 1a6; the middle part of the first shell 1a is convexly provided with a guide convex rib 1a20, the guide convex rib 1a20 is positioned between the release mounting groove 1a3 and the second assembly hole 1a6, two spaced grooves are formed in the middle part of the guide convex rib 1a20, the guide convex rib 1a20 is in a Chinese character 'shan' shape, the guide convex rib 1a20 and a guide groove 1321 arranged on the indicator 13 are mutually matched to form a guide structure, and the guide structure is used for providing a guide function for the indicator 13.

27-29, the indicator 13 of the trip mechanism, the trip 11, the rotating member 12, the energy storage member and the circuit board 15 are assembled in the first housing 1a, the transformer 21 of the trip mechanism is assembled in the second housing 2a, wherein the indicator 13 is slidingly assembled at one end of the first housing 1a far away from the end communicated with the second housing 2a, that is, when the indicator 13 is assembled in the first assembly hole 1a5, the trip 11 is assembled in the trip mounting groove 1a3, wherein the movable iron core 114 of the trip 11 is positioned at one side facing the second assembly hole 1a6, the circuit board 15 is stacked at one side of the first housing 1a, wherein the test button 161, the trip 11, the rotating member 12 and the indicator 13 are arranged at the other side of the first housing 1a, the circuit board 15 is preferably provided with a relief gap 152 at one side of the circuit board 15 along the first housing 1a3, the movable iron core 114 is positioned at the other side of the trip mounting hole 11, the movable iron core 114 is positioned at the other side of the first end of the trip 12, and the first gap 152 is provided between the movable iron core 114 and the rotating member 12 at the other end of the first housing 12, and the rotary member 12 is in the relief gap 152 is provided; the transformer 21 may be disposed at one end of the second housing 2a or in the middle of the second housing 2a, in this embodiment, as shown in fig. 24, the transformer 21 is disposed at one end of the second housing 2a, that is, the first protrusion 1aa1 is abutted with the second protrusion 2aa1 for accommodating the transformer 21, so that the thickness of the housing is maximum only at a position where the transformer 21 is assembled, and the rest may be properly reduced in thickness or reduced in volume according to the internal parts, and in addition, the central axis of the transformer 21 may be parallel to the length direction of the first housing 1a, that is, in a direction parallel to the vertical direction of the first housing 1a (see the direction of fig. 24), of course, the central axis of the transformer 21 may also be perpendicular to both the length direction of the first housing 1a and the length direction of the second housing 2a, that is, the central axis of the transformer 21 is perpendicular to both the vertical direction of the first housing 1a and the horizontal direction of the second housing 2a, or the assembly direction of the transformer 21 may be adjusted according to practical circumstances. In addition, a wiring assembly matched with the transformer 21 is assembled in the second casing 2a, and the wiring assembly comprises a first wiring member and a second wiring member, wherein the first wiring member penetrates through the second casing 2a to be connected with a wiring terminal of the circuit breaker 3, and the second wiring member corresponds to a second wiring port arranged in the second casing 2a and is used for being connected with an external wire.

In this embodiment, the indicating member 13 is convexly provided with a mating portion 131, the second end of the rotating member 12 is provided with a second linkage groove 1221 and an abutting portion 1222, when no leakage fault occurs, the mating portion 131 is in plug-in limit with the second linkage groove 1221 (see fig. 27 and 28), so that the second end of the rotating member 12 forms a snap fit with the indicating member 13, at this time, the energy storage member stores energy, after the leakage fault occurs, the movable iron core 114 drives the rotating member 12 to rotate, so that the mating portion 131 is separated from the second linkage groove 1221 (see fig. 12), the energy storage member releases energy to enable the indicating member 13 to pop out to indicate the leakage fault, wherein the mating portion 131 can be matched with the abutting portion 1222 (see fig. 13) to limit the rotating member 12 to prevent the circuit breaker 3 from closing when the leakage fault is not removed.

The specific structure of the indicator 13 of this embodiment is provided in connection with fig. 20 and 21, the indicator 13 includes an indicator body, in which the indicator body is integrally in a rectangular square column shape, one end of the indicator body is used as an indicator 134 to be matched and extend out of the first housing 1a, the middle of the indicator body is slidably matched with the first housing 1a, a guiding slot 1321 is provided in the middle of the indicator body, three hollow bar-shaped slots are provided in the middle of the indicator 13 in the figure, one of the bar-shaped slots is used as a guiding slot 1321 to be slidably matched with the guiding rib 1a20, the matching of the guiding rib 1a20 and the guiding slot 1321 can limit the moving stroke of the indicator 13, the indicator 13 is ensured to slide along the length direction of the first housing 1a, the other end face of the indicator body is provided with a first spring fixing portion 133, the first spring fixing portion 133 can be in a groove structure or a boss structure, and the other end edge of the indicator body is laterally and outwardly extended to form a hook-shaped matching portion 131.

The specific structure of the rotating member 12 in this embodiment is provided in conjunction with fig. 32, where the rotating member 12 includes a rotating connecting portion 123, a first rotating arm 121 and a second rotating arm 122, and preferably, the rotating connecting portion 123 is integrally formed with the first rotating arm 121 and the second rotating arm 122, the rotating connecting portion 123 is cylindrical, a rotating shaft is disposed in the middle of the rotating connecting portion 123 and is used for rotationally connecting with the first housing 1a, the first rotating arm 121 is connected to one side of the rotating connecting portion 123 as a first end of the rotating member 12, the first rotating arm 121 is opposite to the first end of the moving iron core 114, and a second spring fixing portion 1213 is disposed on a side surface of the first rotating arm 121 opposite to the moving iron core 114; the second rotating arm 122 is connected to the other side of the rotating connection portion 123 as a second end of the rotating member 12, where the length of the second rotating arm 122 is greater than that of the first rotating arm 121, the second rotating arm 122 is integrally in a fan-shaped structure, a second linkage groove 1221 is formed in the middle of the second rotating arm 122, one side wall of the second linkage groove 1221 is used as an abutting portion 1222, in this embodiment, an included angle between the first rotating arm 121 and the second rotating arm 122 is an obtuse angle, the second linkage groove 1221 and the abutting portion 1222 are located on one side of the second rotating arm 122 facing the first rotating arm 121, and of course, an included angle between the first rotating arm 121 and the second rotating arm 122 may also be an acute angle.

Referring to fig. 31, a specific structure of a release 11 according to this embodiment is provided, the release 11 includes a yoke 111, a frame 112, a coil, a movable iron core 114 and a static iron core 113, where a pair of yokes 111 are respectively sleeved at two ends of the frame 112, the movable iron core 114 and the static iron core 113 are respectively assembled in the middle of the frame 112 between the pair of yokes 111, and the movable iron core 114 and the static iron core 113 are respectively located at two ends of the frame 112, through holes are respectively provided in the middle of the yokes 111 and the static iron core 113 adjacent to the static iron core 113, a first end of the movable iron core 114 passes through the through holes and extends out of the frame 112 to be matched with a first end of the rotating member 12, an iron core spring 115 is provided between the movable iron core 114 and the static iron core 113, and two ends of the iron core spring 115 are respectively abutted to the movable iron core 114 and the static iron core 113 for providing elastic restoring force for the movable iron core 114.

In this embodiment, the energy storage member may include only one energy storage spring (see fig. 27), and the same energy storage spring provides the restoring force to the rotating member 12 and the indicating member 13, respectively, and of course, the energy storage member may also be two energy storage springs providing the restoring force to the indicating member 13 and the rotating member 12, respectively (see fig. 28).

In connection with fig. 27, 32 and 33, there is provided a structure in which the rotating member 12 and the indicating member 13 are provided with a restoring force by the same energy storage spring, wherein the energy storage spring connected between the rotating member 12 and the indicating member 13 is a first energy storage spring 141, two ends of the first energy storage spring 141 are respectively connected with the indicating member 13 and the rotating member 12, that is, one end of the first energy storage spring 141 is connected with the first spring fixing portion 133 of the indicating member 13, the other end of the first energy storage spring 141 is connected with the second spring fixing portion 1213 of the rotating member 12, when no leakage fault occurs, the first energy storage spring 141 is compressed and stores energy, after the leakage fault occurs, the trip 11 pushes the first end of the rotating member 12 to enable the second end of the rotating member 12 to rotate clockwise, at this time, the fitting portion 131 is separated from the second linkage groove 1221, the first energy storage spring 141 releases energy, and the indicating portion 134 of the indicating member 13 pops up the first fitting hole 1a5 to indicate the leakage fault, and at the same time, the released first energy storage spring 141 enables the indicating member 13 to remain in a separated state from the rotating member 12.

In combination with fig. 28, a structure is provided in which the rotating member 12 and the indicating member 13 are respectively provided with restoring force by different energy storage springs, as shown in fig. 16, the indicating member 13 is provided with restoring force by a second energy storage spring 142, the rotating member 12 is provided with elastic restoring force by a third energy storage spring 143, in which the second energy storage spring 142 is arranged in the middle of the indicating member 13, preferably, a guide groove 1321 arranged in the middle of the indicating member body can be used as a containing groove of the second energy storage spring 142, and a guide rib 1a20 matched with the first housing 1a can be used as a driving part to extend into the guide groove 1321 to be in butt joint with one end of the second energy storage spring 142, and the other end of the second energy storage spring 142 is in butt joint with the guide groove 1321; the third energy storage spring 143 is the torsional spring, and the third energy storage spring 143 and rotate piece 12 coaxial assembly in first casing 1a, and the one end and the first casing 1a butt of third energy storage spring 143, the other end and rotate piece 12 butt, the other end and the rotation connecting portion 123 of rotating piece 12 butt of preferential third energy storage spring 143 to make always rotate piece 12 keep pivoted moment, compare first embodiment, this embodiment can omit a conductive spring, has further saved inner space and manufacturing cost.

As shown in fig. 27, a test button 161 and a test circuit are further disposed in the first housing 1a, wherein the test button 161 is slidably disposed at an end of the first housing 1a far from the second housing 2a, that is, the test button 161 is assembled in the second assembly hole 1a6, and typically, the test button 161 is disposed in parallel with the indicator 13, preferably, a foolproof structure is disposed between the test button 161 and the second assembly hole 1a6 to ensure that the test button 161 is properly assembled in the second assembly hole 1a6, the test button 161 is used to switch on or off a breakpoint of the test circuit, the test circuit passes through the transformer 21 and is connected with the circuit board 15, and after the test circuit is switched on, the transformer 21 obtains an analog leakage signal, an action signal is outputted to actuate the release 11.

In this embodiment, the test circuit includes a conductive post 151 and a third elastic conductive element 1623, where the conductive post 151 is connected to the circuit board 15, in fig. 27, the conductive post 151 is located at one end of the first housing 1a away from the second housing 2a, the third elastic conductive element 1623 is a torsion spring disposed in the first housing 1a, preferably, a third connecting shaft and a spring abutting portion 1a7 are protruding from an inner side wall of the first housing 1a, a spiral portion of the third elastic conductive element 1623 is sleeved on the third connecting shaft, a breakpoint of the test circuit is formed between a middle portion of a first end of the third elastic conductive element 1623 and the conductive post 151, a first end of the third elastic conductive element 1623 is in plug-in fit with the test button 161 to provide an elastic restoring force for the test button 161, a middle portion of a second end of the third elastic conductive element 1623 is in contact with the spring abutting portion 1a7, one side of the boss is an inclined slope, which is favorable for being connected to the middle portion of the third elastic conductive element 1623, and the second end of the third elastic conductive element 1623 is plugged into the socket of the circuit board 15. In addition, the test loop includes connecting wires that pass through the transformer 21.

The specific structure of the test button 161 is provided in combination with fig. 34 and 35, the test button 161 includes a button body, the whole of the button body is a cylindrical body, one end of the button body is taken as a pressing portion 1614 to extend out of the first casing 1a, a limiting plate 1612 is arranged in the middle of the button body in a protruding manner along the circumferential direction, the whole of the limiting plate 1612 is in a rectangular plate-shaped structure in the figure, one side of the limiting plate 1612 protrudes outwards to form a foolproof portion 1613, the foolproof portion 1613 enables the button body to form an asymmetric structure, the foolproof portion 1613 can be matched with a foolproof slot in the second assembly hole 1a6 so as to ensure the uniqueness of the assembly position, a through slot 1611 is formed in the middle of the button body, the through slot 1611 is close to the other end of the button body, and the first end of the third elastic conductive element 1623 can be inserted into the through slot 1611, so that the third elastic conductive element 1623 provides an elastic reset force for the test button 161, and an elastic element matched with the test button 161 is omitted, so that the number of parts of the test mechanism is small, and the test button has the characteristics of simple structure.

As shown in fig. 1 to 4, a plug-in circuit breaker 3 includes a housing 3a and a circuit breaker body assembled in the housing 3a, wherein the circuit breaker body is identical to the first embodiment, and a leakage protection module of the second embodiment is disposed on one side of the housing 3a, and the leakage protection module is assembled with the circuit breaker body in the same manner as the first embodiment.

The matching process of the leakage protection module and the breaker body in this embodiment specifically includes:

as shown in fig. 20 to 23, in the normal operation state of the circuit breaker body, the earth leakage protection module is kept in the original state, at this time, the tripping mechanism is in the original state, the first end of the movable iron core 114 abuts against the first end of the rotating member 12, the matching portion 131 of the indicating member 13 of the rotating member 12 is in plug-in matching with the second linkage groove 1221 of the rotating member 12, and the energy storage member stores energy; as shown in fig. 27 and 28, after a leakage fault occurs or a test circuit is connected, the transformer 21 detects a leakage current signal or an analog leakage current signal and then outputs an action signal, the release 11 drives the first end of the movable iron core 114 to move in the left direction in the drawing after being electrified and attracted, so as to drive the rotating member 12 to rotate clockwise, at this time, the matching part 131 of the indicating member 13 is separated from the second linkage groove 1221, the indicating part 134 of the indicating member 13 pops up outside the first casing 1a to indicate the leakage fault, and meanwhile, the second end of the rotating member 12 drives the linkage shaft 32 to trip and power off the operating mechanism; after the release 11 is powered off, the movable iron core 114 moves rightwards under the action of the counter force of the iron core spring to reset, at the moment, the rotating member 12 can rotate a certain angle, but the abutting part 1222 of the rotating member 12 abuts against the matching part 131 of the indicating member 13, the second end of the rotating member 12 can be blocked on the reset path of the linkage shaft 32 while the rotating member 12 is limited to rotate, and the breaker 3 is prevented from being switched on under the condition that the leakage fault is not removed or the test loop is not disconnected; after the leakage fault is removed or the test loop is disconnected, the indicator 13 is pressed to store energy for the energy storage element, the matching part 131 of the indicator 13 slides into the second linkage groove 1221 along the abutting part 1222 to be in plug-in matching again, and the tripping mechanism is reset.

It should be noted that, in the description of the present utility model, the terms "upper", "lower", "left", "right", "inner", "outer", and the like indicate an orientation or a positional relationship based on that shown in the drawings or an orientation or a positional relationship conventionally put in use, and are merely for convenience of description, and do not indicate that the apparatus or element to be referred to must have a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating relative importance.

The foregoing is a further detailed description of the utility model in connection with the preferred embodiments, and it is not intended that the utility model be limited to the specific embodiments described. It will be apparent to those skilled in the art that several simple deductions or substitutions may be made without departing from the spirit of the utility model, and these should be considered to be within the scope of the utility model.

Claims (13)

1. The utility model provides a test mechanism, includes test circuit, circuit board (15), mutual-inductor (21) and test button (161) that set up in the casing, test button (161) are used for switching on or break off the breakpoint of test circuit, and test circuit passes mutual-inductor (21) and is connected with circuit board (15), its characterized in that: the casing includes one end intercommunication and mutually perpendicular's first casing (1 a) and second casing (2 a), test button (161) sliding fit is in the one end of first casing (1 a), and the other end of first casing (1 a) and second casing (2 a) intercommunication is kept away from to the one end of first casing (1 a), and test circuit and circuit board (15) assemble in first casing (1 a), and mutual-inductor (21) assemble in second casing (2 a).

2. The test mechanism of claim 1, wherein: the test loop comprises a first elastic conductive element (1621) and a second elastic conductive element (1622), wherein the first end of the first elastic conductive element (1621) and the first end of the second elastic conductive element (1622) are opposite at intervals to form a break point of the test loop, and a wire passing through the transformer (21) is connected between the second end of the first elastic conductive element (1621) and the second end of the second elastic conductive element (1622).

3. The test mechanism as recited in claim 2, wherein: the first elastic conductive element (1621) and the second elastic conductive element (1622) are respectively positioned at two sides of the test button (161), the middle part of the test button (161) is provided with a through groove (1611), and the first end of the first elastic conductive element (1621) passes through the through groove (1611) to be matched with the first end of the second elastic conductive element (1622).

4. A test mechanism according to claim 3, wherein: the first elastic conductive element (1621) and the second elastic conductive element (1622) are torsion springs, the second end of the first elastic conductive element (1621) and the first and second ends of the second elastic conductive element (1622) are respectively abutted with the first shell (1 a), and the first end of the first elastic conductive element (1621) passes through the through groove (1611) and is opposite to the first end of the second elastic conductive element (1622) at intervals.

5. The test mechanism of claim 1, wherein: the test loop comprises a conductive column (151) and a third elastic conductive element (1623), wherein the conductive column (151) is connected with the circuit board (15), a break point of the test loop is formed by the first end of the third elastic conductive element (1623) and the conductive column (151) at intervals, and the second end of the third elastic conductive element (1623) is spliced with a jack of the circuit board (15).

6. The test mechanism as recited in claim 5, wherein: the middle part of test button (161) is equipped with logical groove (1611), and the first end of third elasticity conductive element (1623) is pegged graft in logical groove (1611), and the first end middle part of third elasticity conductive element (1623) is opposite with conductive column (151) interval.

7. The test mechanism as recited in claim 5, wherein: the inner side wall of the first shell (1 a) is convexly provided with a third connecting shaft and a spring abutting part (1 a 7), the third elastic conductive part (1623) is a torsion spring, the spiral part of the third elastic conductive part (1623) is sleeved on the third connecting shaft, and the middle part of the second end of the third elastic conductive part (1623) is abutted with the spring abutting part (1 a 7).

8. The test mechanism of claim 1, wherein: one end of the first shell (1 a) is provided with a second assembly hole (1 a 6), the test button (161) is slidably assembled in the second assembly hole (1 a 6), and a foolproof structure is arranged between the test button (161) and the second assembly hole (1 a 6).

9. The test mechanism as recited in claim 8, wherein: the side wall of the test button (161) is provided with a fool-proof part (1613) in a protruding mode, and one side of the second assembly hole (1 a 6) is provided with a fool-proof groove matched with the fool-proof part (1613).

10. The test mechanism of claim 1, wherein: the test button (161) comprises a button body, one end of the button body is taken as a pressing part (1614) to extend out of the first shell (1 a), a through groove (1611) is formed in the middle of the button body, the edge of the other end of the button body extends outwards to form a limiting plate (1612), or the middle of the button body protrudes outwards along the annular direction to form a limiting plate (1612), and one side edge of the limiting plate (1612) protrudes outwards to form a fool-proof part (1613).

11. The test mechanism of claim 1, wherein: the second shell (2 a) is internally provided with a wiring assembly (22) matched with the transformer (21), and the wiring assembly (22) comprises a first wiring piece (221) matched with the circuit breaker (3) and a second wiring piece (222) connected with an external conductive piece.

12. A leakage protection module, characterized by: comprising a test mechanism according to any one of claims 1-11 and a trip mechanism, said trip mechanism being arranged in the first housing (1 a) in cooperation, the trip mechanism being connected to the circuit board (15).

13. A plug-in circuit breaker, includes circuit breaker body, its characterized in that: the leakage protection module as claimed in claim 12 is arranged on one side of the circuit breaker body in a matched mode, the first shell (1 a) and the second shell (2 a) are respectively arranged on one side of the circuit breaker body and one end of the circuit breaker body in a matched mode, and a linkage shaft (32) of the circuit breaker body penetrates through the first shell (1 a) to be matched with the tripping mechanism.

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