CN209544266U

CN209544266U - Miniature circuit breaker

Info

Publication number: CN209544266U
Application number: CN201822238036.XU
Authority: CN
Inventors: 卢科军; 顾翔翼
Original assignee: Zhejiang Chint Electrics Co Ltd
Current assignee: Zhejiang Chint Electrics Co Ltd
Priority date: 2018-12-28
Filing date: 2018-12-28
Publication date: 2019-10-25
Anticipated expiration: 2028-12-28

Abstract

The utility model relates to Low Voltage Electrical Apparatus, more particularly to a kind of miniature circuit breaker, it includes circuit breaker housing, button mechanism and instruction device, circuit breaker housing includes the indicator hole that one side is arranged in, button mechanism is slidably matched with circuit breaker housing, instruction device and button mechanism driving cooperate, and when push button mechanism makes the miniature circuit breaker close a floodgate, button mechanism driving instruction device blocks indicator hole；The miniature circuit breaker of the utility model, instruction device can indicate the "on" position of breaker, improve electrical safety in breaker closing.

Description

Miniature circuit breaker

Technical field

The utility model relates to Low Voltage Electrical Apparatus, and in particular to a kind of miniature circuit breaker.

Background technique

The use of breaker can effectively improve safety and the reliability service of electrical equipment, in order to meet different electrical equipments Installation need, a kind of wherein breaker of the miniature circuit breaker as important kind, structure is varied and whole tends to be small Type.Existing miniature circuit breaker, has the following problems more:

1, existing miniature circuit breaker can be intuitive after carrying out combined floodgate or sub-switching operation to breaker using operation handle Judge the sub-gate and closing state of breaker by the position of operation handle, and breaker close a floodgate using button mechanism or After sub-switching operation, then the separating brake or "on" position of breaker can not be intuitively judged by the position of button mechanism.

Summary of the invention

The purpose of the utility model is to overcome the defect of the prior art, a kind of miniature circuit breaker is provided, instruction device, In breaker closing, it can indicate the "on" position of breaker, improve electrical safety.

To achieve the above object, the utility model adopts the technical scheme that

A kind of miniature circuit breaker comprising circuit breaker housing 2, button mechanism 1 and instruction device, circuit breaker housing 2 are wrapped The indicator hole that one side is set is included, button mechanism 1 is slidably matched with circuit breaker housing 2, and instruction device and button mechanism 1 drive Cooperation, when push button mechanism 1 makes the miniature circuit breaker close a floodgate, button mechanism 1 drives instruction device to block indicator hole.

Preferably, the circuit breaker housing 2 includes at least one plug wire hole 208 and at least one that one side is arranged in A hole 201 of taking out stitches, plug wire hole 208 are used cooperatively with hole 201 of taking out stitches, and button mechanism 1, take out stitches hole 201 and plug wire hole 208 are located at disconnected The same end of road device shell 2, when push button mechanism 1 makes the miniature circuit breaker close a floodgate, button mechanism 1 drives instruction device to hide Hole 201 of taking out stitches is kept off, the hole 201 that will take out stitches is as indicator hole.

Preferably, the instruction device includes at least one baffle and STATEMENT OF FEDERALLY SPONSORED 7a, the one end STATEMENT OF FEDERALLY SPONSORED 7a and button mechanism 1 Driving is connected, and the other end and barrier driving cooperate, and the baffle is slidably matched with circuit breaker housing 2, and push button mechanism 1 makes When miniature circuit breaker closes a floodgate, button mechanism 1 drives baffle to be moved at hole 201 of taking out stitches and blocks hole of taking out stitches by STATEMENT OF FEDERALLY SPONSORED 7a 201。

It preferably, further include operating mechanism 5, moving contact 56 and static contact 560, the button mechanism 1 includes button body 11 and first connecting rod 1050, the both ends of first connecting rod 1050 be connected respectively with button body 11 and operating mechanism 5, described first 1050 one end of connecting rod passes through button body 11 and STATEMENT OF FEDERALLY SPONSORED 7a driving cooperates；When button press mechanism 1, button mechanism 1 passes through the One connecting rod 1050 drives operating mechanism 5 to carry out closing operation, is closed moving contact 56 and static contact 560, while button mechanism 1 is logical It crosses first connecting rod 1050 and drives STATEMENT OF FEDERALLY SPONSORED 7a, STATEMENT OF FEDERALLY SPONSORED 7a driving baffle is made to be moved at hole 201 of taking out stitches and block hole of taking out stitches 201。

Preferably, the circuit breaker housing 2 includes the cunning chamber that 201 inside of hole of taking out stitches is arranged in, and baffle is in the intracavitary movement of cunning It takes out stitches hole 201 to block or leaves hole 201 of taking out stitches.

Preferably, it is pivotably arranged in circuit breaker housing 2 in the middle part of the STATEMENT OF FEDERALLY SPONSORED 7a, the STATEMENT OF FEDERALLY SPONSORED 7a includes linkage Part by swing arm 71a and STATEMENT OF FEDERALLY SPONSORED actuating arm 70a, slotted 73a by setting STATEMENT OF FEDERALLY SPONSORED in the middle part of swing arm 71a by swing arm by the STATEMENT OF FEDERALLY SPONSORED, STATEMENT OF FEDERALLY SPONSORED actuating arm 70a is equipped with STATEMENT OF FEDERALLY SPONSORED and drives column 72a, and one end that the baffle and STATEMENT OF FEDERALLY SPONSORED 7a driving cooperate is provided with gear Plate is slotted by moved end；The button mechanism 1 includes that button drives column, and button drives column and STATEMENT OF FEDERALLY SPONSORED to be driven by swing arm fluting 73a It is connected, STATEMENT OF FEDERALLY SPONSORED drives column 72a to be connected with the baffle by moved end fluting driving.

Preferably, the circuit breaker housing 2 includes that setting is taken out stitches hole 201 in the plug wire hole 208 of one side two and two, and two It is a take out stitches hole 201 respectively with two 208 corresponding matchings of plug wire hole；The instruction device include first baffle 5a, second baffle 6a, STATEMENT OF FEDERALLY SPONSORED 7a and the second drive rod 8a, first baffle 5a, second baffle 6a take out stitches with two 201 corresponding matching of hole respectively, and first One end of baffle 5a is connected with STATEMENT OF FEDERALLY SPONSORED 7a driving, and the other end is connected with the driving of one end of the second drive rod 8a, the second drive rod The 8a other end is connected with second baffle 6a driving, and is pivotably arranged in circuit breaker housing 2 in the middle part of the second drive rod 8a；By pressing Button mechanism 1 makes miniature circuit breaker close a floodgate, and button mechanism 1 drives first baffle 5a to be moved to a hole of taking out stitches by STATEMENT OF FEDERALLY SPONSORED 7a At 201 and the hole 201 of taking out stitches is blocked, first baffle 5a drives second baffle 6a to be moved to another and tears open by the second drive rod 8a At string holes 201 and block the hole 201 of taking out stitches.

Preferably, the circuit breaker housing 2 further includes that the first sliding chamber 27 and the second sliding chamber 26, the first sliding chamber 27 are arranged one A 208 side of plug wire hole and close button mechanism 1, first baffle 5a are slidably arranged in the first sliding chamber 27, and the second sliding chamber 26 is set It setting in 208 side of another plug wire hole and far from button mechanism 1, second baffle 6a is slidably arranged in the second sliding chamber 26, and first Sliding chamber 27 is communicated with the second sliding chamber 26, and the second drive rod 8a is rotatably arranged on the connectivity part of the first sliding chamber 27 and the second sliding chamber 26, And second the both ends of drive rod 8a be located in the first sliding chamber 27 and the second sliding chamber 26, and the both ends difference of the second drive rod 8a It is connected with first baffle 5a, second baffle 6a driving.

Preferably, the first baffle 5a includes first baffle by moved end 52a, first baffle linking arm 51a and first gear The both ends plate main body 50a, first baffle linking arm 51a are connected with first baffle by moved end 52a, first baffle main body 50a respectively, First baffle is by the moved end side 52a setting first baffle by moved end fluting 53a, and first baffle is by moved end fluting 53a and STATEMENT OF FEDERALLY SPONSORED 7a driving is connected, setting first baffle main body fluting 54a on the downside of first baffle main body 50a；The second baffle 6a includes second The baffle main body 60a and second baffle main body being arranged on the downside of second baffle main body 60a fluting 61a；Second drive rod 8a includes the second drive rod trunk 80a, the second drive rod by moved end 82a and the second drive rod driving end 81a, the second drive rod master Dry 80a is pivotably arranged in circuit breaker housing 2, and the second drive rod is driven phase by moved end 82a and first baffle main body fluting 54a Even, the second drive rod drives end 81a to be connected with the fluting 61a driving of second baffle main body.

It preferably, further include leading-out terminal 100, leading-out terminal 100 includes conductive plate 102 and elastic component 101, and conductive plate 102 is solid Fixed to be arranged in circuit breaker housing 2, elastic component 101 includes elastic component fixing end 1011 and elastic component crimping end 1010, elastic component Fixing end 1011 is fixed in circuit breaker housing 2, elastic component crimping end 1010 and 102 Elastic Contact of conductive plate, and elasticity Part crimping end 1010 is correspondingly arranged with plug wire hole 208, hole 201 of taking out stitches, and external wire passes through plug wire hole 208 and is inserted into elastic component pressure Between line end 1010 and conductive plate 102, external wire is pressed on elastic component crimping end by the reset force at elastic component crimping end 1010 Between 1010 and conductive plate 102, pressure is applied to elastic component crimping end 1010 by taking out stitches hole 201, makes elastic component crimping end 1010 separate with external wire, can extract external wire from plug wire hole 208.

Preferably, the instruction device further includes instruction device return unit 9a, after the reset of button mechanism 1, instruction device It is resetted and departure instruction hole under the action of instruction device return unit 9a.

The miniature circuit breaker of the utility model, instruction device can block indicator hole in breaker closing, disconnected to indicate Road device is in "on" position；User is played a warning role, prompt user not take out stitches and patching operations, significantly improves Electrical safety.In addition, the circuit breaker housing further includes that the hole of taking out stitches of one side is arranged in, using hole of taking out stitches as instruction Hole, in breaker closing, instruction device blocks hole of taking out stitches, that is, plays the role of indicating breaker closing state, also without Increase supernumerary structure, is conducive to the structure for simplifying the utility model miniature circuit breaker.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the utility model miniature circuit breaker；

Fig. 2 is the structural schematic diagram of the utility model miniature circuit breaker, shows the dress of locking mechanism and circuit breaker housing With relationship；

Fig. 3 is the assembling structure schematic diagram of the utility model button mechanism and locking mechanism；

Fig. 4 is the structural schematic diagram of the utility model miniature circuit breaker, shows anti-switching-on mechanism and circuit breaker housing Assembly relation；

Fig. 5 is the assembling structure schematic diagram of the utility model button mechanism and anti-switching-on mechanism；

Fig. 6 is the assembling structure schematic diagram of the utility model button mechanism and operating mechanism；

Fig. 7 is the structural schematic diagram of the part A of the utility model Fig. 6, shows breaker under gate-dividing state, separating brake bar With the positional relationship of guide ledges, guide groove group；

Fig. 8 is the structural schematic diagram of the operating mechanism of the utility model；

Fig. 9 is the structural schematic diagram of the part B of the utility model Fig. 8, shows breaker under "on" position, separating brake bar With the positional relationship of guide ledges, guide groove group；

Figure 10 is movement locus schematic diagram of the utility model separating brake bar in guide groove group；

Figure 11 is the structural schematic diagram of the utility model miniature circuit breaker, shows plug wire hole, outlet hole, leading-out terminal and The positional relationship of two baffles；

Figure 12 is the assembling structure schematic diagram of the utility model first baffle, STATEMENT OF FEDERALLY SPONSORED, button mechanism and circuit breaker housing；

Figure 13 is the structural schematic diagram of the utility model circuit breaker housing, shows the rigging position of the second drive rod；

Figure 14 is the structural schematic diagram of the utility model instruction device；

Figure 15 is the decomposition texture schematic diagram of the utility model instruction device；

Figure 16 is the structural schematic diagram of the utility model instruction device, shows instruction device return unit and first baffle Assembly relation；

Figure 17 is the structural schematic diagram of the utility model instruction device, shows the dress of STATEMENT OF FEDERALLY SPONSORED Yu instruction device return unit With relationship；

Figure 18 is the structural schematic diagram of the utility model circuit breaker housing, shows the various apertures of circuit breaker housing；

Figure 19 is the structural schematic diagram of the utility model operating mechanism；

Figure 20 is the structural schematic diagram of the utility model circuit breaker housing, and it illustrates the knots of installation guide-localization step Structure.

Specific embodiment

Below in conjunction with the embodiment that attached drawing 1-19 is provided, the specific reality of the miniature circuit breaker of the utility model is further illustrated Apply mode.The miniature circuit breaker of the utility model is not limited to the following description.

The miniature circuit breaker of the utility model comprising circuit breaker housing 2, setting are slided in circuit breaker housing 2 with it The button mechanism 1 of cooperation, and the operating mechanism 5, moving contact 56, the static contact 560, short circuit guarantor that are arranged in circuit breaker housing 2 Protect mechanism 6, arc-extinguishing mechanism 7 and overload protecting mechanism 9；The button mechanism 1 is driven by first connecting rod 1050 and operating mechanism 5 It is connected, operating mechanism 5 is connected with moving contact 56, and short current protective mechanism 6 and overload protecting mechanism 9 drive with operating mechanism 5 respectively Cooperation, circuit breaker tripping is triggered when there is corresponding failure, arc-extinguishing mechanism 7 is used cooperatively with moving contact 56, static contact 560.

Preferably, the short current protective mechanism 6 includes magnetictrip, and overload protecting mechanism 9 includes bimetal leaf and tune Save screw.

Preferably, it as shown in Figure 1, the setting of the button mechanism 1 is in 2 one end of circuit breaker housing, short current protective mechanism 6 and goes out Arc mechanism 7 is arranged at the other end of circuit breaker housing 2, the setting of operating mechanism 5 button mechanism 1 and short current protective mechanism 6 it Between, overload protecting mechanism 9 is arranged in 5 side of operating mechanism and between arc-extinguishing mechanism 7 and button mechanism 1.Further, such as Shown in Fig. 1, the miniature circuit breaker of the utility model further includes leading-out terminal 100 and end of incoming cables 8, and leading-out terminal 100 is arranged in button machine 1 side of structure, and leading-out terminal 100 and button mechanism 1 are located at the same end of circuit breaker housing 2, end of incoming cables 8 is arranged in short-circuit protection machine The side of structure 6, arc-extinguishing mechanism 7, and end of incoming cables 8, short current protective mechanism 6 and arc-extinguishing mechanism 7 are located at the same of circuit breaker housing 2 End；The end of incoming cables 8 is splicing type connecting terminal.Specifically, direction as shown in Figure 1, the button mechanism 1 and leading-out terminal 100 Positioned at the upper end of circuit breaker housing 2, leading-out terminal 100 is located at the left side of button operation mechanism 1, operating mechanism 5 and overload protection machine Structure 9 is located at the middle part of circuit breaker housing 2, and overload protecting mechanism 9 is located at the left side of operating mechanism 5, short current protective mechanism 6, arc extinguishing Mechanism 7 and end of incoming cables 8 are located at the lower end of circuit breaker housing 2, and end of incoming cables 8 is located under short current protective mechanism 6 and arc-extinguishing mechanism 7 Side.As it can be seen that the miniature circuit breaker of the utility model, reasonably being planned and distributed for circuit breaker housing 2, both ensure that each machine The rational deployment and organic cooperation of structure or component, also make the space of circuit breaker housing 2 be fully utilized, are conducive to reduce The overall volume of the utility model miniature circuit breaker reduces the peace of breaker to adapt to the miniaturization trend of electrical equipment Space is filled to need.Moreover, the leading-out terminal 100 is located at the same end of circuit breaker housing 2 with button mechanism 1, convenient for user to disconnected It road device wiring and takes out stitches, end of incoming cables 8 is splicing type connecting terminal, it is connected convenient for breaker with main circuit, either inlet wire wiring, Or outlet wiring significantly improves wiring convenience, and be conducive to without dismantling the Installation cabinet for installing breaker Improve operational safety.

Preferably, as shown in Figures 4 and 5, the miniature circuit breaker of the utility model further includes anti-switching-on mechanism, button mechanism 1 Setting is slidably matched in 2 one end of circuit breaker housing with it, and anti-switching-on mechanism includes the first locking piece 3, and the first locking piece 3 pivot is set It sets in circuit breaker housing 2,3 one end of the first locking piece and 1 snap fit of button mechanism stop button mechanism 1 towards combined floodgate direction Mobile, after miniature circuit breaker is assembled to breaker rigging position and is installed in place, the shell of breaker rigging position acts on the One locking piece 3 makes the first locking piece 3 and button mechanism 1 unlock after cooperation, and button mechanism 1 can be mobile towards combined floodgate direction Carry out closing operation.The anti-switching-on mechanism, it is ensured that only after miniature circuit breaker is installed in place, can just carry out combined floodgate behaviour Make, avoid because miniature circuit breaker install it is not in place due to cause poor contact to can not work normally breaker the case where, also avoid Because miniature circuit breaker and the virtual connection of breaker rigging position touch, when carrying out closing operation, electric arc is generated, to breaker or breaker The case where rigging position causes ablation, influences service life, is conducive to the case where also avoiding user from getting an electric shock in operating breaker Improve electrical safety.

Preferably, as shown in Figures 4 and 5, the anti-switching-on mechanism further includes the first Lock spring, and the first locking piece 3 includes First lock body 31 and the first locking piece protrusion 30, first locking for being separately positioned on 31 both ends of the first lock body Part blocking arm 32, the first lock body 31 are pivotably arranged in circuit breaker housing 2, the first locking piece blocking arm 32 and the first locking piece 31 bending of main body is connected, and the circuit breaker housing 2 includes that the first aperture 203 of one side is arranged in；First Lock spring It is connected respectively with the first locking piece 3, circuit breaker housing 2, makes the first locking piece blocking arm 32 and 1 lock fit of button mechanism, and make It is prominent in 2 outside of circuit breaker housing that first locking piece protrusion 30 passes through the first aperture 203；The miniature circuit breaker is assembled to disconnected Road device rigging position and after being installed in place, the shell of breaker rigging position, which squeezes the first locking piece protrusion 30, makes it to breaker It is moved in shell 2, the first locking piece blocking arm 32 and button mechanism 1 is made to unlock cooperation.

It should be pointed out that the button mechanism 1 and 32 lock fit of the first locking piece blocking arm refer to button mechanism 1 I.e. can not be towards combined floodgate direction (direction as shown in Figure 1, combined floodgate direction refer to lower section) movement after locked, and lock fit releases Afterwards, button mechanism 1 can be acted towards combined floodgate direction, can make the miniature circuit breaker separating brake/combined floodgate of the utility model.

Preferably, as shown in Figures 2 and 3, the utility model miniature circuit breaker further includes locking mechanism, and locking mechanism includes the Two locking pieces 4, button mechanism 1 are arranged in 2 one end of circuit breaker housing and are slidably matched with it, and circuit breaker housing 2 includes that setting exists Second aperture 204 of one side, the second locking piece 4 are pivotably arranged in circuit breaker housing 2,4 one end of the second locking piece and button The driving cooperation of mechanism 1, the other end passes through the second aperture 204 and the shell limit of breaker rigging position cooperates；Towards breaker shell When pulling button mechanism 1 outside body 2, button mechanism 1 drives the rotation of the second locking piece 4, assembles the second locking piece 4 with breaker The shell of position releases limit cooperation.The shell of the locking mechanism, 4 one end of the second locking piece and breaker rigging position limits Cooperation, prevents the utility model miniature circuit breaker from accidentally being extracted, and guarantees the stabilization of breaker, reliably works, also avoids user Under breaker closing state, breaker is accidentally extracted and is got an electric shock, is conducive to improve Electrical Safety.

Preferably, as shown in Figures 2 and 3, the locking mechanism further includes the second Lock spring, and the second locking piece 4 includes the Two lock bodies 41 and it is separately positioned on the second locking piece protrusion 40 at 41 both ends of the second lock body, the second locking piece Actuating arm 42, the second lock body 41 are pivotably arranged in circuit breaker housing 2, and with 42 bending phase of the second locking piece actuating arm Even；The circuit breaker housing 2 includes that the second aperture 204 of one side is arranged in；Second Lock spring is locked with second respectively It is connected to determine part main body 41, circuit breaker housing 2, so that the second locking piece protrusion 40 is passed through the second aperture 204 prominent in circuit breaker housing 2 Outside；After the miniature circuit breaker is assembled to breaker rigging position, the second locking piece protrusion 40 passes through the second aperture 204 and breaks The shell of road device rigging position limits cooperation.The locking mechanism is installed to breaker dress in the utility model miniature circuit breaker Coordination postpones, and the shell of the second locking piece protrusion 40 and breaker rigging position, which limits, to be cooperated, and prevents the utility model small-sized disconnected Road device is accidentally extracted, and is guaranteed the stabilization of breaker, is reliably worked, also avoids user under breaker closing state, will be breaking Device is accidentally extracted and is got an electric shock, and is conducive to improve Electrical Safety.

Preferably, the breaker rigging position, can be the Installation cabinet for installing breaker.

Preferably, as shown in Figures 3 and 5, the button mechanism 1 includes button head 10, button body 11 and first connecting rod 1050, the setting of button head 10 is in 11 one end of button body and protrudes in 2 outside of circuit breaker housing, presses so that user easily operates Button mechanism 1,1050 one end of first connecting rod are inserted into 11 other end of button body, 3 one end of the first locking piece and first connecting rod 1050 One end lock fit being inserted into button body 11, the second locking piece 4 are inserted into button body 11 with first connecting rod 1050 One end drive cooperation.The first connecting rod 1050 also divides both as the actuated element between button mechanism 1 and operating mechanism 5 Do not cooperate with the first locking piece 3, the second locking piece 4, be conducive to the structure of simplified push button mechanism 1, it is small-sized to save the utility model The production cost of breaker.

Preferably, the first lock body 31 of first locking piece 3, the second lock body of the second locking piece 4 41 are pivotably arranged in circuit breaker housing 2 by the first pivot 3040, are conducive to simplify anti-switching-on mechanism and locking mechanism Assembling structure is conducive to the small-sized of the utility model miniature circuit breaker to save the assembly space inside circuit breaker housing 2 Change.

Preferably, the torsion spring 3042 that first Lock spring and the second Lock spring are an integral structure comprising Torsion spring first end, torsion spring second end and torsion spring third end, torsion spring first end is connected with the first lock body 31, double Torsional spring second end is connected with the second lock body 41, and torsion spring third end is connected with circuit breaker housing 2.The torsion spring 3042 It can be connected simultaneously with the first locking piece 3, the second locking piece 4 and circuit breaker housing 2, be conducive to be further simplified anti-switching-on mechanism With the assembling structure of locking mechanism, simplify assembly manipulation, improves assembly efficiency.

Preferably, as shown in figs. 1 and 8, the operating mechanism 5 includes snap close piece 53, supporter 54 and tripping part 55, branch Gripping member 54 is pivotably arranged to respectively in circuit breaker housing 2, and snap close piece 53 and tripping part 55 are pivotably arranged to respectively on supporter 54, Button mechanism 1 is connected with the driving of operating mechanism 5,55 snap fit of snap close piece 53 and tripping part, and tripping part 55 and supporter 54 Driving cooperation, supporter 54 are connected with moving contact 56, and supporter 54 is connected with moving contact 56；

The miniature circuit breaker of the utility model further includes separating brake bar 15, and separating brake bar 15 includes separating brake bar connecting pin and separating brake bar End is driven, separating brake bar connecting pin is connected with button mechanism 1, and separating brake bar drives end and the driving of tripping part 55 to cooperate；It is described small-sized disconnected When road device is in gate-dividing state, snap close piece 53 and 55 snap fit of tripping part, push button mechanism 1 drive operating mechanism 5 dynamic Make, operating mechanism 5 drives moving contact 56 and static contact 560 to be closed, and miniature circuit breaker enters "on" position, while making separating brake bar 15 Slide into the position cooperated with tripping part 55；Push button mechanism 1 again, separating brake bar drive end driving tripping part 55 to rotate, make Tripping part 55 and snap close piece 53 release snap fit, and operating mechanism 5 is threaded off, and supporter 54 drives moving contact 56 and static contact 560 It disconnects, miniature circuit breaker enters gate-dividing state, while separating brake bar 15 resets to initial position.

It should be pointed out that the snap fit between the snap close piece 53 and tripping part 55 refers to 53 one end of snap close piece It is overlapped with tripping part 55, and limits the movement of tripping part 55, once and snap close piece 53 and the bonding relation of tripping part 55 are broken Bad, then the movement of tripping part 55 is no longer limited by snap close piece 53.

Existing miniature circuit breaker realizes the sub-switching operation of breaker using drawing button, and this drawing mode is often Breaker is pulled out from cabinet because user's dynamics is excessive, breaker Assembly stability is poor, influences the usage experience of user.

The miniature circuit breaker of the utility model can realize separating brake/combined floodgate of breaker by push button mechanism 1, compare In the prior art by the way of the sub-switching operation that drawing button mechanism realizes breaker, drawing button mechanism can be avoided When, the case where breaker is pulled out from cabinet drops because the dynamics of user is excessive, and the assembly for being conducive to improve breaker is steady It is qualitative, improve the usage experience of user.

It should be pointed out that the utility model miniature circuit breaker, can also when miniature circuit breaker is in "on" position, By drawing button mechanism 1, realize that sub-switching operation, separating brake bar 15 can be pulled, have no effect on button mechanism 1 and be drawn out.Into One step, the miniature circuit breaker of the utility model can also be not provided with separating brake bar 15, but by drawing button mechanism 1, pass through First connecting rod 1050 rotates through dead point with pneumatic operating mechanism 5 and carries out separating brake, so that moving contact 56 and static contact 560 be made to disconnect.

Preferably, the miniature circuit breaker of the utility model further includes instruction device, and circuit breaker housing 2 includes being arranged in one The indicator hole of side, button mechanism 1 are slidably matched with circuit breaker housing 2, and instruction device and the driving of button mechanism 1 cooperate, by pressing When button mechanism 1 makes miniature circuit breaker close a floodgate, button mechanism 1 drives instruction device to block indicator hole.The small-sized of the utility model is broken Road device, instruction device can block indicator hole in breaker closing, to indicate the "on" position of breaker, play to user Warning function, prompt user not take out stitches to miniature circuit breaker and patching operations, significantly improves electrical safety.

Preferably, as shown in fig 12 and fig 14, the circuit breaker housing 2 includes at least one plug wire hole that one side is arranged in 208 are used cooperatively at least one hole 201 of taking out stitches, plug wire hole 208 and hole 201 of taking out stitches, button mechanism 1, take out stitches hole 201, plug wire Hole 208 is located at the same end of circuit breaker housing 2；The utility model miniature circuit breaker further includes instruction device, and instruction device includes At least one baffle and STATEMENT OF FEDERALLY SPONSORED 7a, the middle part STATEMENT OF FEDERALLY SPONSORED 7a are pivotably arranged in circuit breaker housing 2, the one end STATEMENT OF FEDERALLY SPONSORED 7a and button The driving of mechanism 1 is connected, and the other end and barrier driving cooperate；Push button mechanism 1 makes miniature circuit breaker close a floodgate, and button mechanism 1 is logical STATEMENT OF FEDERALLY SPONSORED 7a driving baffle is crossed to be moved at hole 201 of taking out stitches and block hole 201 of taking out stitches.Further, the baffle and breaker Shell 2 is slidably matched.

Preferably, be pivotably arranged in circuit breaker housing 2 in the middle part of the STATEMENT OF FEDERALLY SPONSORED 7a, STATEMENT OF FEDERALLY SPONSORED 7a include STATEMENT OF FEDERALLY SPONSORED by Swing arm 71a and STATEMENT OF FEDERALLY SPONSORED actuating arm 70a, STATEMENT OF FEDERALLY SPONSORED by setting STATEMENT OF FEDERALLY SPONSORED in the middle part of swing arm 71a by swing arm fluting 73a, drive by STATEMENT OF FEDERALLY SPONSORED Swing arm 70a is equipped with STATEMENT OF FEDERALLY SPONSORED and drives column 72a；One end of the baffle and STATEMENT OF FEDERALLY SPONSORED 7a driving cooperation is provided with baffle by moved end Fluting；The button mechanism 1 includes that button drives column, and button drives column to be connected with STATEMENT OF FEDERALLY SPONSORED by swing arm fluting 73a driving, links Part drives column 72a to be connected with baffle by moved end fluting driving.

Preferably, the baffle is slidably matched with circuit breaker housing 2.

Preferably, the hole 201 of taking out stitches is indicator hole.

Existing miniature circuit breaker, when breaker closing is powered, hole of taking out stitches is exposed to outside, still can be disconnected by hole contact of taking out stitches The circuit of road device enclosure interior, user carry out maloperation to hole of taking out stitches, it is most likely that cause user to get an electric shock, there is very big safety Hidden danger.

The miniature circuit breaker of the utility model, baffle can be moved at hole of taking out stitches and block and tear open in breaker closing First string holes plays a warning role user, user is prompted not operate to hole of taking out stitches, and two, which carry out baffle, blocks hole of taking out stitches, Also it avoids user from operating hole of taking out stitches, significantly improves electrical safety.

Preferably, as shown in figs. 18, the circuit breaker housing 2 is rectangular parallelepiped structure, and circuit breaker housing 2 includes opposite The front end face and rear end face of setting, the left side and right side being oppositely arranged, and the upper and lower surfaces being oppositely arranged；Institute It states and is provided with entrance hole 21a on rear end face, operating parts mounting hole 1020 and plug wire hole 208, institute are provided on the front end face It states and is provided with splicing type connecting terminal in entrance hole 21a.The miniature circuit breaker of the utility model, the front end of circuit breaker housing 2 Plug wire hole and entrance hole are respectively set on face and rear end face, external wire can be inserted directly with the splicing type connecting terminal in entrance hole Cooperation or drawing separation are connect, in installation and replacement breaker, does not all need too big dismounting space, and convenient for disassembly and assembly.

As shown in Figure 1, a most preferred embodiment of the miniature circuit breaker for the utility model.

Direction as shown in Figure 1, the miniature circuit breaker of the utility model comprising circuit breaker housing 2, button mechanism 1, anti-conjunction Brake mechanism, locking mechanism, operating mechanism 5, short current protective mechanism 6, arc-extinguishing mechanism 7, end of incoming cables 8, overload protecting mechanism 9, dynamic touching First 56, static contact 560 and leading-out terminal 100；The button mechanism 1 is inserted into 2 upper end of circuit breaker housing and slides with circuit breaker housing 2 Dynamic cooperation, the setting of leading-out terminal 100 is in 2 upper end of circuit breaker housing and is located at 1 left side of button mechanism, short current protective mechanism 6, arc extinguishing machine In 2 lower end of circuit breaker housing, short current protective mechanism 6, arc-extinguishing mechanism 7 are arranged in 8 upside of end of incoming cables for structure 7 and the setting of end of incoming cables 8, and Arc-extinguishing mechanism 7 and short current protective mechanism 6 or so are arranged side by side, and operating mechanism 5 and overload protecting mechanism 9 are arranged in circuit breaker housing 2 middle parts, for operating mechanism 5 between short current protective mechanism 6 and button mechanism 1, overload protecting mechanism 9 is located at 7 He of arc-extinguishing mechanism Between leading-out terminal 100；The button mechanism 1 is connected by the driving of first connecting rod 1050 and operating mechanism 5, operating mechanism 5 with move Contact 56 is connected, and overload protecting mechanism 9 is connected with static contact 560, and arc-extinguishing mechanism 7 makes with moving contact 56, the cooperation of static contact 560 With short current protective mechanism 6, overload protecting mechanism 9 drive with operating mechanism 5 respectively to be cooperated.

Preferably, as shown in Figure 1, the overload protecting mechanism 9 includes bimetal leaf and adjusting screw, bimetal leaf upper end It drives and cooperates with the tripping part 55 of operating mechanism 5, lower end is fixed in circuit breaker housing 2, is adjusted screw and is arranged in double gold Belong on the left of piece lower end, the position for the bimetal leaf that screw adjusts overload protecting mechanism can be adjusted by screwing, to adjust this reality With the overload current protection scope of novel small-sized breaker.

As shown in Figures 4 and 5, the anti-switching-on mechanism includes the first locking piece 3, and the first locking piece 3 includes the first locking piece Main body 31 and the first locking piece protrusion 30 and the first locking piece blocking arm 32 for being separately positioned on 31 both ends of the first lock body. Direction as shown in Figure 4, first locking piece 3 are pivotably arranged at the upper right corner of circuit breaker housing 2 by the first pivot 3040, And it is located at the right side of button mechanism 1, and it is equipped with torsion spring 3042 above the first locking piece 3, it is the torsion spring first end of torsion spring 3042, double Torsional spring third end is connected with the first lock body 31, the circuit breaker housing 2 of the first locking piece 3 respectively, keeps the first locking piece convex The first aperture 203 that 30 pass through circuit breaker housing 2 is played to protrude in 2 outside of circuit breaker housing.As shown in figure 5, the button mechanism 1 includes button head 10, button body 11 and first connecting rod 1050, and the setting of button head 10 is in 11 one end of button body and protrudes disconnected 2 outside of road device shell, so as to the convenient operation button head 10 of user, it is another that 1050 one end of first connecting rod is inserted into button body 11 On end and form the first drive rod 3041,3041 lock fit of the first locking piece blocking arm 32 and the first drive rod.Specifically, as schemed Direction shown in 5, the button head 10 are connected with the left end of button body 11, and button body 11 is arranged in the first drive rod 3041 Right end, the setting of the first locking piece blocking arm 32 is on 3041 right side of the first drive rod, when button mechanism 1 is pressed, the first locking piece Blocking arm 32 prevents button mechanism 1 from moving to the right, i.e., prevention button mechanism 1 is mobile towards combined floodgate direction, and when the utility model is small Type breaker, after being assembled to breaker rigging position and being installed in place, the shell of breaker rigging position squeezes the first locking piece Protrusion 30 makes the first locking piece protrusion 30 to moving inside circuit breaker housing 2, then the first locking piece blocking arm 32 tilts, and no longer hinders The first drive rod 3041 is kept off, at this time push button mechanism 1, breaker closing can be made.

Preferably, as shown in figure 5, first locking piece 3 includes being arranged in the first of 31 side of the first lock body The torsion spring first end of Lock spring retention bead 33, the first Lock spring retention bead 33 and torsion spring 3042, which limits, to be cooperated. Specifically, direction as shown in Figure 5, after the left end of the first lock body 31 is arranged in the first Lock spring retention bead 33 Side, torsion spring first end are located at 33 front side of the first Lock spring retention bead and limit cooperation with it.

Preferably, as shown in figure 5, the button mechanism 1 includes drive rod erecting bed 12, first connecting rod 1050 is U-shaped bar, 1050 one end of first connecting rod is inserted on drive rod erecting bed 12 and forms out figure in the first drive rod of 12 side of erecting bed 3041, the first locking piece blocking arm 32 of the first locking piece 3 is located at 12 side of drive rod erecting bed and locks with the first drive rod 3041 Fixed cooperation, the first locking piece blocking arm 32 stop the first drive rod 3041 mobile to combined floodgate direction.Specifically, direction as shown in Figure 5, The drive rod erecting bed 12 is arranged on the upside of 11 right end of button body, and the left end of first connecting rod 1050 is inserted into drive rod installation On platform 12, and prominent the first drive rod 3041 in 12 front side of drive rod erecting bed is formed, the first locking piece blocking arm 32 is located at the Cooperation is locked on the right side of one drive rod 3041.Further, direction as shown in Figure 5, the button mechanism 1 further include the first limit Position boss 13, the first positive stop lug boss 13 and the setting of the interval of drive rod erecting bed 12 and is located at its front side, the first positive stop lug boss 13 with Circuit breaker housing 2 is engaged, so as to keep stablizing when button mechanism 1 slides in circuit breaker housing 2, to avoid shaking.It is excellent Choosing, direction as shown in Figure 5, the button mechanism 1 further includes button projection 14, and button projection 14 is arranged in button body 11 Side and it is located at the front side of drive rod erecting bed 12, the rear end of button projection 14 is connected with the front end of drive rod erecting bed 12.

As shown in Figures 2 and 3, the locking mechanism includes the second locking piece 4, and the second locking piece 4 includes the second locking piece master Body 41 and it is separately positioned on the second locking piece protrusion 40 at 41 both ends of the second lock body, the second locking piece actuating arm 42. Direction as shown in Figure 2, the locking mechanism are arranged at the upper right corner of circuit breaker housing 2, and are located at 1 right side of button mechanism, the Second lock body 41 of two locking pieces 4 is pivoted in circuit breaker housing 2 by the first pivot 3040.As shown in figure 3, Second locking piece actuating arm 42 of second locking piece 4 and the first drive rod 3041 of first connecting rod 1050 drive and cooperate.Tool Body, direction as shown in Figure 3, the setting of the second locking piece actuating arm 42 is in 3041 left side of the first drive rod, the utility model Miniature circuit breaker, after being assembled to breaker rigging position and being installed in place, the shell of breaker rigging position and second locking The limit cooperation of part main body 41, makes breaker and breaker rigging position reliably limit and assemble, pulls outside present dynasty's circuit breaker housing 2 When button mechanism 1, i.e., button mechanism 1 is pulled to the left, the first drive rod 3041 drives the second locking piece actuating arm 42, makes second Locking piece actuating arm 42 tilts, and the second locking piece protrusion 40 is sunk to be moved to the inside of circuit breaker housing 2, to make the second locking piece The limit of protrusion 20 and breaker rigging position, which cooperates, to be released, under user can dismantle breaker from breaker rigging position Come.

Preferably, as shown in figure 3, second locking piece 4 includes being arranged in the second of 41 side of the second lock body Lock spring retention bead 43, the torsion spring second end of torsion spring 3042 and the limit of the second Lock spring retention bead 43 cooperate. Specifically, direction as shown in Figure 3, the second Lock spring retention bead 43 is arranged behind 41 left end of the second lock body Side, the setting of torsion spring second end limit cooperation with it in 43 front side of the second Lock spring retention bead.

Preferably, direction as shown in Figure 5, the torsion spring 3042 are mounted on circuit breaker housing by third installation axle 3043 On 2, torsion spring 3042 includes torsion spring first end, torsion spring second end and torsion spring third end, and torsion spring first end is turned round with double The setting of spring second end is substantially parallel with button body 11 above button body 11, and torsion spring third end is arranged in button body 11 Top is substantially perpendicular, and torsion spring third end also cooperates with the button projection 14 of button mechanism 1, and torsion spring third end is in button Stop button projection 14 on 1 separating brake direction of mechanism, thus position of the limit button mechanism 1 on separating brake direction.Specifically, as schemed Direction shown in 2, the first installation axle 3043 are mounted at the upper right corner of circuit breaker housing 2.

Preferably, as shown in Fig. 2, the circuit breaker housing 2 further includes third Lock spring retention bead 210, third lock Determine spring retainer protrusion 210 to be connected with torsion spring third end.Specifically, the direction as shown in Fig. 2, the third Lock spring limit Position protrusion 210 is arranged above locking mechanism, anti-switching-on mechanism, and is located at 3043 left side of the first installation axle.

Preferably, as shown in Figure 1, the button mechanism 1 is arranged in 2 one end of circuit breaker housing and is slidably matched with it, the Three Lock spring retention beads 210, the first installation axle 3043, the first locking piece 3, the second locking piece 4 and torsion spring 3042 are all provided with It sets in 1 side of button mechanism, the first installation axle 3043 is arranged at an interior angle of circuit breaker housing 2, third Lock spring limit Between the first installation axle 3043 and button mechanism 1, the first locking piece 3 and the second locking piece 4 are arranged side by side position protrusion 210, And it is located at 210 side of third Lock spring retention bead, the first aperture 203 is compared with the second aperture 204, closer to the first installation Axis 3043, the first pivot 3040 is between the first aperture 203 and the first installation axle 3043.Specifically, direction as shown in Figure 1, The setting of button mechanism 1 is slidably matched in 2 upper end of circuit breaker housing with it, and anti-switching-on mechanism, locking mechanism and torsion spring are equal Setting is arranged at the upper right corner of circuit breaker housing 2 in 1 right side of button mechanism, the first installation axle 3043, and torsion spring 3042 is arranged In the first installation axle 3043, anti-switching-on mechanism and locking mechanism pass through the first pivot 3040 and are pivotably arranged to breaker shell On body 2, and it is located at 3043 lower section of the first installation axle, the first locking piece 3 of anti-switching-on mechanism and the second locking piece 4 of locking mechanism It is arranged side by side, the second locking piece 4 is located inside, and the first locking piece 3 is located at outside, and the first aperture 203 is located in the second aperture 204 Side, the setting of third Lock spring retention bead 210 is in 3043 left side of the first installation axle.

As shown in Fig. 1,6,8, the operating mechanism 5 include driving member 51, second connecting rod 52, snap close piece 53, supporter 54, Tripping part 55 and first back-moving spring 57, driving member 51 are pivotably arranged in circuit breaker housing 2 by the second pivot 510, are supported Part 54 is pivotably arranged in circuit breaker housing 2 by third pivot 540, and snap close piece 53 is pivotably arranged to by the 4th pivot 530 On supporter 54, tripping part 55 is pivotably arranged on supporter 54 by third pivot 540.The button mechanism 1 passes through first Connecting rod 1050 is connected with the driving of driving member 51, and actuator 51 is connected by second connecting rod 52 with the driving of snap close piece 53, snap close piece 53 With 55 snap fit of tripping part, and tripping part 55 and the driving of supporter 54 cooperate, and supporter 54 is connected with moving contact 56.

It should be pointed out that anti-switching-on mechanism is in addition to anti-to lock with 1 lock fit of button mechanism using the first locking piece 3 Only breaker it is unassembled in place in the case where closed a floodgate outside, the anti-switching-on mechanism can also with operating mechanism 5 lock match (not shown) is closed to prevent the operating mechanism 5 from being closed a floodgate by operation.Specifically, breaker it is unassembled in place when, it is described One end of first locking piece 3 of anti-switching-on mechanism can keep out locking with the supporter 54 of operating mechanism 5, be assembled to breaker Behind position, the shell of breaker rigging position, which touches the rotation of the first locking piece 3, makes the supporter of the first locking piece 3 and operating mechanism 5 54 contact lock fits, in this way, button mechanism 1 can be mobile towards combined floodgate direction, and drive operating mechanism 5 to act and close a floodgate Operation.

The operating mechanism 5 further includes separating brake bar 15, button mechanism return unit 10a, guide ledges 20 and guide groove group. The separating brake bar 15 includes that separating brake bar connecting pin and separating brake bar drive end, and separating brake bar connecting pin is connected with button mechanism 1, separating brake bar End and the driving of tripping part 55 is driven to cooperate.The conducting wire boss 20 is arranged in circuit breaker housing 2, as shown in figures 7 and 9, described Guide groove group includes the first guide groove 21, the second guide groove 22, third guide groove 23, the 4th guide groove 24, the 5th guide groove 25, First guide groove 21, the second guide groove 22, third guide groove 23, the 4th guide groove 24 and the 5th guide groove 25 join end to end to be formed Around the guide groove group of the annular of guide ledges 20.When the miniature circuit breaker is in gate-dividing state, push button mechanism 1, point Restrictor bar 15 separating brake bar driving end by the first guide groove 21, via the second guide groove 22, into third guide groove 23, small-sized open circuit Device enters "on" position, decontrols button mechanism 1, and under the effect of button mechanism return unit 10a counter-force, button mechanism 1 drives separating brake Bar drives end to enter the 4th guide groove 24 by third guide groove 23, at this point, the front end at separating brake bar driving end is directed at tripping part 55, leads It is resetted to boss 20 in separating brake bar 15 and blocks separating brake bar 15 on direction, prevent separating brake bar 15 and button mechanism 1 multiple in button mechanism The counter-force effect of position part 10a is lower to be resetted；Push button mechanism 1 again rotates the driving tripping 55 of separating brake bar driving end, tripping part 55 release snap fit with snap close piece 53, and 5 tripping of operating mechanism, operating mechanism 5 drives button mechanism 1 to reset, and button mechanism 1 drives separating brake bar driving end by the 4th guide groove 24, via the 5th guide groove 25, into the first guide groove 21,1 He of button mechanism Operating mechanism 5 returns to original state, and miniature circuit breaker is made to enter gate-dividing state.

As shown in Figure 10, show the separating brake bar 15 separating brake bar driving end motion profile: the utility model it is small Type breaker, by gate-dividing state to "on" position, broken line a-b-c-d describes the motion profile at separating brake bar driving end substantially；This The miniature circuit breaker of utility model, when by "on" position to gate-dividing state, broken line d-e-a describes separating brake bar driving end substantially Motion profile.

Preferably, as shown in fig. 7, first guide groove 21 includes the first guiding groove bottom, the second guide groove 22 includes Second guiding groove bottom, third guide groove 23 include that third is oriented to groove bottom, and the 4th guide groove 24 includes the 4th guiding groove bottom, 5th guide groove 25 includes the 5th guiding groove bottom；The second guiding groove bottom is inclined-plane, the second guiding groove bottom with the The connected one end of one guiding groove bottom is concordant with the first guiding groove bottom, and the second guiding groove bottom is connected with third guide groove 23 One end be higher than first guiding groove bottom, and be higher than third be oriented to groove bottom, the 4th guiding groove bottom be lower than third guide groove bottom Face, the 5th guiding groove bottom are inclined-plane, the one end being connected with the 4th guiding groove bottom and the 4th guiding of the 5th guiding groove bottom Groove bottom is concordant, and the 5th one end for being connected with the first guide groove 21 of guiding groove bottom is higher than the 4th and is oriented to groove bottom, and higher than the One guiding groove bottom.

Preferably, the junction of the second guiding groove bottom and third guiding groove bottom is equipped with step structure, and third is led Step structure, the 5th guiding groove bottom and the first guiding groove bottom are equipped with to the junction of groove bottom and the 4th guiding groove bottom Junction is equipped with step structure.

Preferably, the guide ledges 20 are the boss that a cross section is triangle.Further, the guide ledges 20 Cross section be right angled triangle or obtuse triangle, right angle or obtuse angle are located at the 4th guide groove 24 and the 5th guide groove 25 Junction, one acute angle are located at the junction of the second guide groove 22 and third guide groove 23, another acute angle is led with first Corresponding with the junction of the second guide groove 22 to slot 21, one article right-angle side or one article of obtuse angle edge are arranged in the 4th guide groove 24 Side and in parallel, another article of right-angle side or another article of obtuse angle edge setting in 25 side of the 5th guide groove and in parallel, Bevel edge or longest edge, which are arranged, is located at straight line in 22 side of the second guide groove, the first guide groove 21 and the second guide groove 22, the Three guide grooves 23 are located at 20 downside of guide ledges.

It should be pointed out that specific structure of the separating brake bar in addition to guide ledges and the cooperation of guide groove group using the present embodiment Outside, can also need to only be cooperated with button mechanism 1, first time, push button mechanism made separating brake bar using other fit structures The second settling position with the cooperation of tripping part can be moved on to, second of push button mechanism is capable of resetting initial stable state, and energy Tripping part is driven, the protection scope of the utility model is belonged to.For example, guiding knot can be set on the button mechanism Structure, the guide rod of setting and guide frame cooperation in circuit breaker housing 2.

Preferably, as shown in Fig. 1,2,4,6 and 8, the driving member 51 includes the first driving member connection being disposed thereon Hole and the second driving member connecting hole, the first driving member connecting hole are connected with first connecting rod 1050, and the first driving member connecting hole Internal diameter is greater than the outer diameter of first connecting rod 1050, so that in the utility model miniature circuit breaker under "on" position, button mechanism 1 There is certain freedom of movement relative to driving member 51, the second driving member connecting hole is connected with second connecting rod 52.

Preferably, it as shown in figure 8, the tripping part 55 includes the first arm of tripping part 550 and the second arm of tripping part 551, jumps The separating brake bar of the free end of the first arm of fastener 550 and 53 snap fit of snap close piece, the second arm of tripping part 551 and separating brake bar 15 drives End driving cooperation, the second arm of tripping part 551, which also drives with overload protecting mechanism 9, to be cooperated.Further, the tripping part 55 also wraps Tripping part extension 553 is included, 553 one end of tripping part extension is connected with the second arm of tripping part 551, the other end and separating brake bar 15 Separating brake bar drives end driving cooperation, and tripping part cantilever arm 553, which also drives with overload protecting mechanism 9, to be cooperated.

Preferably, as shown in figure 8, the tripping part 55 substantially Wei " Shang " shape structure comprising the first arm of tripping part 550, The second arm of tripping part 551, tripping part third arm 552 and tripping part extension 553, tripping part third arm 552 and short-circuit protection machine The driving cooperation of structure 6.Specifically, direction as shown in Figure 8, the tripping part 55 is substantially " Shang " shape structure, and middle part passes through third Pivot 540 is pivoted on supporter 54, and the second arm of tripping part 551 and tripping part third arm 552 are substantially at straight line On, the first arm of tripping part 550 is located between the second arm of tripping part 551 and tripping part third arm 552, substantially with it is straight where the two Line is vertical, and the width of one end of tripping part extension 553 and separating brake bar driving end cooperation is greater than or equal to the 4th of guide groove group The width of guide groove 24, to guarantee the reliable fit at separating brake bar driving end and tripping part extension 553.

Preferably, as shown in figure 8, the button mechanism return unit 10a is a resilient metal member, one end and circuit breaker housing 2 are fixedly linked, and are located at 51 side of driving member, and the other end extends to 1 direction of button mechanism, and match with the driving of button mechanism 1 It closes；When the miniature circuit breaker is in gate-dividing state, button mechanism 1 is separated with button mechanism return unit 10a, at miniature circuit breaker When "on" position, button mechanism 1 is contacted with button mechanism return unit 10a, and button mechanism return unit 10a is that button mechanism 1 mentions For resetting the reaction force in direction.It should be pointed out that button mechanism 1 can also when the miniature circuit breaker is in gate-dividing state To be contacted with button mechanism return unit 10a.

Preferably, the button mechanism return unit 10a is specially a torsional spring or bending metals bar/piece, one end of which is fixed on In circuit breaker housing 2, the other end and button mechanism 1 cooperate.It should be understood that in other embodiments, button mechanism resets Part 10a is also possible to the pressure spring being arranged between circuit breaker housing 2 and button mechanism 1, provides reaction force for button mechanism 1.

As figs 11-13, the circuit breaker housing 2 is torn open including two plug wire holes 208 and two that one side is arranged in String holes 201, two take out stitches hole 201 respectively with two 208 corresponding matchings of plug wire hole, take out stitches hole 201 and a plug wire hole 208 It is one group, each group of plug wire hole 208 and hole 201 of taking out stitches are correspondingly arranged with a leading-out terminal 100, and external wire may pass through Plug wire hole 208 is connected with leading-out terminal 100, user can by take out stitches hole 201 operate leading-out terminal 100, thus by external wire from insert It is extracted at string holes 208.

As illustrated in figs. 13-15, the miniature circuit breaker of the utility model further includes instruction device, and instruction device includes first gear Plate 5a, second baffle 6a, STATEMENT OF FEDERALLY SPONSORED 7a and the second drive rod 8a, first baffle 5a and second baffle 6a take out stitches with two respectively 201 corresponding matching of hole, the one end first baffle 5a are connected with STATEMENT OF FEDERALLY SPONSORED 7a driving, and the other end drives phase with second one end drive rod 8a Even, the second drive rod 8a other end is connected with second baffle 6a driving, and is pivotably arranged to breaker in the middle part of the second drive rod 8a On shell 2；Push button mechanism 1 makes miniature circuit breaker close a floodgate, and button mechanism 1 drives first baffle 5a to move by STATEMENT OF FEDERALLY SPONSORED 7a It moves at a hole 201 of taking out stitches and the hole 201 of taking out stitches is blocked, first baffle 5a drives second baffle by the second drive rod 8a 6a, which is moved to another and takes out stitches, hole 201 and blocks the hole 201 of taking out stitches.Specifically, in conjunction with shown in Figure 11 and 12, close to button machine The plug wire hole 208 of structure 1 is the first plug wire hole, and the plug wire hole 208 far from button mechanism 1 is the second plug wire hole, with the first plug wire hole The hole 201 of taking out stitches of cooperation is first to take out stitches hole, and the hole 201 of taking out stitches with the cooperation of the second plug wire hole is second to take out stitches hole；Described first Baffle 5a and second takes out stitches hole cooperation, and second baffle 6a and first takes out stitches hole cooperation, and the second middle part drive rod 8a is pivotably arranged to In circuit breaker housing 2, push button mechanism 1, button mechanism 1 drives STATEMENT OF FEDERALLY SPONSORED 7a rotation, and STATEMENT OF FEDERALLY SPONSORED 7a drives first baffle 5a Taking out stitches to second, hole is mobile and block second and take out stitches hole, and first baffle 5a drives the second drive rod 8a rotation, the second drive rod 8a Drive second baffle 6a mobile and block first and take out stitches hole to the first hole of taking out stitches.

Preferably, the first baffle 5a setting is taken out stitches between hole and a leading-out terminal 100 second, and second baffle 6a is set It sets and takes out stitches between hole and another outlet hole 100 second.Further, two leading-out terminals 100 are small with the utility model respectively The two poles of the earth of type breaker are correspondingly arranged.

As figs 11-13, the circuit breaker housing 2 further includes the first sliding chamber 27 and the second sliding chamber 26, the first sliding chamber 27 208 side of plug wire hole and close to button mechanism 1, first baffle 5a is slidably arranged in the first sliding chamber 27 for setting, and second In another 208 side of plug wire hole and far from button mechanism 1, second baffle 6a is slidably arranged in the second sliding chamber 26 for the sliding setting of chamber 26 Interior, the first sliding chamber 27 is communicated with the second sliding chamber 26, and the second drive rod 8 is rotatably arranged on the company of the first sliding chamber 27 and the second sliding chamber 26 Logical place, and the both ends of the second drive rod 8a are located in the first sliding chamber 27 and the second sliding chamber 26, and the two of the second drive rod 8a End is connected with first baffle 5a, second baffle 6a driving respectively.Specifically, as figs 11-13, the described first sliding chamber 27 is arranged It takes out stitches hole side and close to button mechanism 1 second, the second sliding setting of chamber 26 is taken out stitches hole side and far from button mechanism first 1, the first sliding chamber 27 and the second sliding chamber 26 communicate, and the second drive rod 8a is rotatably arranged on the first sliding chamber 27 and second and slides chamber 26 Connectivity part and the second drive rod 8a is between the first plug wire hole and the second plug wire hole, first baffle 5a is slidably arranged in first In sliding chamber 27, the one end first baffle 5a is connected with STATEMENT OF FEDERALLY SPONSORED 7a driving, and the other end is connected with the driving of one end of the second drive rod 8a, The second drive rod 8a other end is connected with second baffle 6a driving, and second baffle 6a is slidably arranged in the second sliding chamber 26, and first Plug wire hole and first takes out stitches hole lower section equipped with the leading-out terminal 100 cooperated with the two, and the second plug wire hole and second is taken out stitches under hole Side is equipped with a leading-out terminal 100 cooperate with the two, and first baffle 5a is arranged to take out stitches hole and corresponding with the first hole of taking out stitches first Leading-out terminal 100 between, second baffle 6a setting takes out stitches second and hole and takes out stitches between the corresponding leading-out terminal 100 in hole with second.

As shown in FIG. 14 and 15, the first baffle 5a includes first baffle by moved end 52a, first baffle linking arm 51a With first baffle main body 50a, the both ends first baffle linking arm 51a are respectively with first baffle by moved end 52a, first baffle main body 50a is connected, and first baffle is by the moved end side 52a setting first baffle by moved end fluting 53a, and first baffle is by moved end fluting 53a It is connected with STATEMENT OF FEDERALLY SPONSORED 7a driving, setting first baffle main body fluting 54a on the downside of first baffle main body 50a；The second baffle 6a Including the second baffle main body 60a and second baffle main body being arranged on the downside of second baffle main body 60a fluting 61a；Described Two drive rod 8a are driven end 81a by moved end 82a and the second drive rod including the second drive rod trunk 80a, the second drive rod, the Two drive rod trunk 80a are pivotably arranged in circuit breaker housing 2, and the second drive rod is slotted by moved end 82a and first baffle main body 54a driving is connected, and the second drive rod drives end 81a to be connected with the fluting 61a driving of second baffle main body.

Preferably, second drive rod is cylindrical structure by moved end 82a and the second drive rod driving end 81a, and The two is vertically connected with the second drive rod trunk 80a.

Preferably, the first baffle by moved end 52a and first baffle main body 50a respectively with first baffle linking arm 51a It is vertically connected.Further, the first baffle is by the moved end fluting extending direction of 53a and prolonging for first baffle linking arm 51a Stretch that direction is vertical, first baffle main body slot 54a extending direction it is vertical with the extending direction of first baffle linking arm 51a, the One baffle is vertical with the first baffle main body fluting extending direction of 54a by the extending direction of moved end fluting 53a.Specifically, as schemed Direction shown in 15, the first baffle are extended along the vertical direction by moved end fluting 53a, and first baffle main body slots 54a along level Direction extends, and first baffle is vertical with the first baffle main body fluting extending direction of 54a by the extending direction of moved end fluting 53a.

Preferably, the second drive rod pivot 83a is set in the middle part of the second drive rod trunk 80a, the of circuit breaker housing 2 The connectivity part of one sliding chamber 27 and the second sliding chamber 26 is equipped with the second drive rod pivoting hole 28, the second drive rod pivot 83a rotation setting In the second drive rod pivoting hole 28.

It as shown in FIG. 14 and 15, is a kind of embodiment of the utility model STATEMENT OF FEDERALLY SPONSORED 7a.

The STATEMENT OF FEDERALLY SPONSORED 7a is V-shaped structure, and middle part is pivotably arranged on circuit breaker housing 2a, and STATEMENT OF FEDERALLY SPONSORED 7a includes connection Moving part is by swing arm 71a and STATEMENT OF FEDERALLY SPONSORED actuating arm 70a, and STATEMENT OF FEDERALLY SPONSORED is by setting STATEMENT OF FEDERALLY SPONSORED in the middle part of swing arm 71a by swing arm fluting 73a, connection Moving part actuating arm 70a is equipped with STATEMENT OF FEDERALLY SPONSORED and drives column 72a；The button assembly 1 include button drive column, button drive column with STATEMENT OF FEDERALLY SPONSORED is connected by swing arm fluting 73a driving, and STATEMENT OF FEDERALLY SPONSORED drives column 72a to be connected with first baffle by moved end fluting 53a driving.

It should be pointed out that as shown in FIG. 14 and 15, button driving column can not also be separately provided in the button mechanism 1, But the drive rod erecting bed 12 that first connecting rod 1050 passes through button mechanism 1 is connected with STATEMENT OF FEDERALLY SPONSORED 7a driving.Above-mentioned connection type, Be conducive to the structure of simplified push button mechanism 1, to reduce production cost.

Direction as shown in figure 12, push button mechanism 1, button mechanism 1 drive column or first connecting rod 1050 to make by button STATEMENT OF FEDERALLY SPONSORED 7a is rotated clockwise, and when button mechanism 1 resets, button mechanism 1 drives column or first connecting rod 1050 to drive by button STATEMENT OF FEDERALLY SPONSORED 7a rotates counterclockwise, to be restored to the original state of 7a.

It is another embodiment of the utility model STATEMENT OF FEDERALLY SPONSORED 7a as described in Figure 16 and 17.

The STATEMENT OF FEDERALLY SPONSORED 7a is V-shaped mechanism, and middle part is pivotably arranged on circuit breaker housing 2a, and STATEMENT OF FEDERALLY SPONSORED 7a includes connection Moving part is contacted phase by swing arm 71a and the button driving column of button mechanism 1 by swing arm 71a and STATEMENT OF FEDERALLY SPONSORED actuating arm 70a, STATEMENT OF FEDERALLY SPONSORED It is connected even or with the end thereof contacts of first connecting rod 1050, STATEMENT OF FEDERALLY SPONSORED actuating arm 70a is equipped with STATEMENT OF FEDERALLY SPONSORED and drives column 72a, linkage Part drives column 72a to be connected with first baffle by moved end fluting 53a driving.Specifically, the button driving column or first connecting rod 1050 one end, which are arranged in STATEMENT OF FEDERALLY SPONSORED and are driven by the upside of swing arm 71a with it, to be connected.

The instruction device further includes instruction device return unit 9a, effect of the instruction device in instruction device return unit 9a Lower reset, to avoid hole 201 of taking out stitches.Preferably, the instruction device return unit 9a is reset spring, one end and open circuit Device shell 2 is connected, and the other end is connected with the STATEMENT OF FEDERALLY SPONSORED of STATEMENT OF FEDERALLY SPONSORED 7a by swing arm 71a or with first baffle 5a.

As shown in FIG. 16 and 17, push button mechanism 1, button mechanism 1 drive column or first connecting rod 1050 to make by button STATEMENT OF FEDERALLY SPONSORED 7a is rotated clockwise, and when button mechanism 1 resets, then rotates STATEMENT OF FEDERALLY SPONSORED 7a counterclockwise by reset spring, to be restored to The original state of STATEMENT OF FEDERALLY SPONSORED 7a.

It should be pointed out that indicator hole (not shown) can also be separately provided in the side of circuit breaker housing 2, make to refer to Showing device and indicator hole cooperate "on" position or gate-dividing state to indicate breaker, and instruction device is matched with button mechanism linkage It closes, when push button mechanism makes the miniature circuit breaker close a floodgate, instruction device is moved at indicator hole and blocks indicator hole, is pressing After button mechanism resets, instruction device departure instruction hole.In the present embodiment, the hole 201 that will take out stitches can efficiently use and tear open as indicator hole String holes, and hole of taking out stitches is blocked using instruction device, it prevents under breaker closing state, to taking out stitches, hole is operated.

As shown in Fig. 2, the leading-out terminal 100 includes conductive plate 102 and elastic component 101, conductive plate 102 is fixed at In circuit breaker housing 2, elastic component 101 includes elastic component fixing end 1011 and elastic component crimping end 1010, elastic component fixing end 1011 are fixed in circuit breaker housing 2, elastic component crimping end 1010 and 102 Elastic Contact of conductive plate, and elastic component crimping End 1010 is correspondingly arranged with one group of plug wire hole 208, hole 201 of taking out stitches, and external wire passes through plug wire hole 208 and is inserted into elastic component crimping Between end 1010 and conductive plate 2, external wire is pressed on elastic component crimping end 1010 by the reset force at elastic component crimping end 1010 Between conductive plate 102, by taking out stitches, the 201 pairs of elastic component crimping ends 1010 in end apply pressure, make elastic component crimping end with it is external Conducting wire separation, can extract external wire from plug wire hole 208.Preferably, as shown in Fig. 2, the circuit breaker housing 2 is also wrapped The elastic component fixed column 105 being disposed thereon is included, forms the elasticity of arc between elastic component fixed column 105 and circuit breaker housing 2 Part mounting groove, elastic component fixing end 1011 are connected by arc-shaped bend structure 1012 with elastic component crimping end 1010, arc-shaped bend Structure 1012 is arranged in elastic component mounting groove.Further, as shown in Figure 12 and 13,102 upper end of conductive plate is equipped with bullet Property part retention bead, elastic component retention bead and elastic component crimping end 1010 limit cooperate.Specifically, square as illustrated in fig. 1 and 2 To setting leading-out terminal wire connection cavity on the left of the button mechanism 1, leading-out terminal wire connection cavity upper end is equipped with a plug wire hole 208 and one It takes out stitches hole 201, conductive plate 102 is fixed at the lower right corner of leading-out terminal wire connection cavity, and the setting of elastic component fixed column 105 is going out The left upper of line end wire connection cavity forms the elastic component mounting groove of arc between elastic component fixed column 105 and circuit breaker housing 2, The arc-shaped bend structure 1012 of elastic component 101 is arranged in elastic component mounting groove, 1011 lower end of elastic component fixing end and breaker 2 Elastic Contact of shell, 1010 right end of elastic component crimping end and 102 Elastic Contact of conductive plate, and limited with elastic component retention bead Cooperation.

It as shown in figs. 18, is a kind of embodiment of the utility model circuit breaker housing 2.

Direction as shown in figure 18, the substantially rectangular parallelepiped structure of circuit breaker housing 2 of the utility model, the circuit breaker housing 2 include the front end face that is oppositely arranged and rear end face, the left side and right side that are oppositely arranged, and the upper surface that is oppositely arranged and Lower surface, circuit breaker housing 2 include including plug wire hole 208, hole 201 of taking out stitches, operating parts mounting hole 1020, the first aperture 203, the Two apertures 204, entrance hole 21a and signal wire meet hole 22a, and 2 front end face of circuit breaker housing is arranged in operating parts mounting hole 1020 Upper end, for installing operating parts, two plug wire holes 208 and two take out stitches the setting of hole 201 in 2 front end face of circuit breaker housing and position In 1020 lower section of operating parts mounting hole, the plug wire hole 208 in left side and the hole 201 of taking out stitches in left side are one group, with a leading-out terminal 100 are used cooperatively, and the plug wire hole 208 on right side and the hole 201 of taking out stitches on right side are one group, make with the cooperation of another leading-out terminal 100 With the first aperture 203 and the first locking piece 3 of anti-switching-on mechanism are used cooperatively, for making the first locking piece of the first locking piece 3 It is prominent in the upside of circuit breaker housing 2, the second locking of the second aperture 204 and locking mechanism that protrusion 30 passes through the first aperture 203 Part 4 is used cooperatively, prominent in breaker shell for making the second locking piece protrusion 40 of the second locking piece 4 pass through the second aperture 204 2 upside of body, and limit and cooperate with the shell of breaker rigging position, two entrance hole 21a are separately positioned on circuit breaker housing 2 Rear end face, two entrance hole 21a every setting, are located at the upper and lower ends of rear end face between the upper and lower, and signal wire meets hole 22a and sets It sets between two entrance hole 21a；Splicing type connecting terminal, specially end of incoming cables 8 are equipped in the entrance hole 21a, with convenient Breaker is assembled to mating with external wire when breaker rigging position.It should be pointed out that the end of incoming cables 8 can also be with Positioned at front end face side, and leading-out terminal 100 is arranged in rear end face side.

It should be pointed out that a pole breaker corresponds to an end of incoming cables and a leading-out terminal, there are the two poles of the earth in the present embodiment Breaker, including the pole L breaker and the pole N breaker, the pole N breaker, directly will be right using conductor without moving contact and static contact The end of incoming cables of the pole N breaker is answered to connect with leading-out terminal.

As shown in fig. 6, the lower surface of the circuit breaker housing 2, which is equipped with, adjusts screw mounting hole 212, adjusts screw and pass through It adjusts screw mounting hole 212 to be assemblied in circuit breaker housing 2, and is contacted with the bimetal leaf of overload protecting mechanism 9, for adjusting The position of bimetal leaf.

Preferably, as shown in figure 18, the left side and/or right side are equipped with installation guide-localization step 214, described Installation guide-localization step 214 protrudes from left side and/or right side, is assembled to breaker rigging position extremely in miniature circuit breaker During being installed in place, installation guide-localization step 214 and the shell cooperation of breaker rigging position are oriented to, and are prevented Miniature circuit breaker assembly is not in place, specifically, the installation guide-localization step 214 includes first step 2141 and second step 2142, first step 2141 is greater than the spacing of second step 2142 and front end face with the spacing of front end face, first step 2141 Upper end is connected with the upper surface of circuit breaker housing 2, and the lower end of second step 2142 is connected with the lower surface of circuit breaker housing 2.Into One step, the first step 2141 is arranged in parallel with second step 2142, and the two is each parallel to front end face and rear end face.

Preferably, as shown in Figure 12 to 18, the miniature circuit breaker further includes instruction device, and instruction device and operating parts drive Dynamic to cooperate, in present embodiment, instruction device and operating parts driving cooperate, and when miniature circuit breaker closes a floodgate, operating parts drives instruction Device blocks hole 201 of taking out stitches.Further, the instruction device can be above-mentioned instruction device.Further, the operation Part can be button mechanism 1 or operation handle.

Preferably, as shown in figure 18, the left and right sides of the operating parts mounting hole 1020 is respectively provided with a protection boss 20a, to reduce collision of the operating parts by exterior object, to be conducive to extend the service life of operating parts.Preferably, prevent for one The left side front end of circuit breaker housing 2 is arranged in shield boss 20a, and the right side of circuit breaker housing 2 is arranged in another protection boss 20a Side front end.

It, cannot the above content is specific preferred embodiment further detailed description of the utility model is combined Assert that the specific implementation of the utility model is only limited to these instructions.For the ordinary skill of the utility model technical field For personnel, without departing from the concept of the premise utility, a number of simple deductions or replacements can also be made, should all regard To belong to the protection scope of the utility model.

Claims

1. a kind of miniature circuit breaker, which is characterized in that it includes circuit breaker housing (2), button mechanism (1) and instruction device, Circuit breaker housing (2) includes the indicator hole that one side is arranged in, and button mechanism (1) is slidably matched with circuit breaker housing (2), instruction Device and button mechanism (1) driving cooperate, and when push button mechanism (1) makes the miniature circuit breaker close a floodgate, button mechanism (1) is driven Dynamic instruction device blocks indicator hole.

2. miniature circuit breaker according to claim 1, it is characterised in that: the circuit breaker housing (2) includes being arranged at it At least one plug wire hole (208) of side and at least one hole of taking out stitches (201), plug wire hole (208) and hole (201) cooperation of taking out stitches It uses, button mechanism (1), hole of taking out stitches (201) and plug wire hole (208) are located at the same end of circuit breaker housing (2), push button machine When structure (1) makes the miniature circuit breaker close a floodgate, button mechanism (1) driving instruction device blocks hole of taking out stitches (201), and will take out stitches hole (201) it is used as indicator hole.

3. miniature circuit breaker according to claim 2, it is characterised in that: the instruction device include at least one baffle and STATEMENT OF FEDERALLY SPONSORED (7a), STATEMENT OF FEDERALLY SPONSORED one end (7a) are connected with button mechanism (1) driving, and the other end and barrier driving cooperate, the baffle It is slidably matched with circuit breaker housing (2), when push button mechanism (1) makes miniature circuit breaker close a floodgate, button mechanism (1) passes through linkage Part (7a) driving baffle is moved at hole of taking out stitches (201) and blocks hole of taking out stitches (201).

4. miniature circuit breaker according to claim 3, it is characterised in that: further include operating mechanism (5), moving contact (56) with Static contact (560), the button mechanism (1) include button body (11) and first connecting rod (1050), first connecting rod (1050) Both ends are connected with button body (11) and operating mechanism (5) respectively, and described first connecting rod (1050) one end passes through button body (11) cooperate with STATEMENT OF FEDERALLY SPONSORED (7a) driving；When button press mechanism (1), button mechanism (1) is driven by first connecting rod (1050) Operating mechanism (5) carries out closing operation, is closed moving contact (56) and static contact (560), while button mechanism (1) passes through first Connecting rod (1050) drives STATEMENT OF FEDERALLY SPONSORED (7a), and STATEMENT OF FEDERALLY SPONSORED (7a) driving baffle is made to be moved at hole of taking out stitches (201) and block hole of taking out stitches (201)。

5. miniature circuit breaker according to claim 3, it is characterised in that: the circuit breaker housing (2) includes that setting is being torn open Cunning chamber on the inside of string holes (201), baffle is in the intracavitary movement of cunning to block hole of taking out stitches (201) or leave hole of taking out stitches (201).

6. miniature circuit breaker according to claim 3, it is characterised in that: be pivotably arranged to break in the middle part of the STATEMENT OF FEDERALLY SPONSORED (7a) On road device shell (2), the STATEMENT OF FEDERALLY SPONSORED (7a) includes STATEMENT OF FEDERALLY SPONSORED by swing arm (71a) and STATEMENT OF FEDERALLY SPONSORED actuating arm (70a), the linkage Part is slotted (73a) by setting STATEMENT OF FEDERALLY SPONSORED in the middle part of swing arm (71a) by swing arm, and STATEMENT OF FEDERALLY SPONSORED actuating arm (70a) drives equipped with STATEMENT OF FEDERALLY SPONSORED One end of column (72a), the baffle and STATEMENT OF FEDERALLY SPONSORED (7a) driving cooperation is provided with baffle and is slotted by moved end；The button mechanism It (1) include button driving column, button drives column to be connected with STATEMENT OF FEDERALLY SPONSORED by swing arm fluting (73a) driving, and STATEMENT OF FEDERALLY SPONSORED drives column (72a) It is connected with the baffle by moved end fluting driving.

7. miniature circuit breaker according to claim 3, it is characterised in that: the circuit breaker housing (2) includes being arranged at it The plug wire hole (208) of side two and two holes of taking out stitches (201), two holes of taking out stitches (201) are corresponding with two plug wire hole (208) respectively Cooperation；The instruction device includes first baffle (5a), second baffle (6a), STATEMENT OF FEDERALLY SPONSORED (7a) and the second drive rod (8a), and One baffle (5a), second baffle (6a) respectively with two hole of taking out stitches (201) corresponding matchings, one end of first baffle (5a) and linkage Part (7a) driving is connected, and one end of the other end and the second drive rod (8a), which drives, to be connected, the second drive rod (8a) other end and the Two baffles (6a) driving is connected, and is pivotably arranged on circuit breaker housing (2) in the middle part of the second drive rod (8a)；Push button mechanism (1) miniature circuit breaker is made to close a floodgate, button mechanism (1) is moved to a hole of taking out stitches by STATEMENT OF FEDERALLY SPONSORED (7a) driving first baffle (5a) (201) at and the hole of taking out stitches (201) is blocked, first baffle (5a) is mobile by the second drive rod (8a) driving second baffle (6a) At to another hole of taking out stitches (201) and block the hole of taking out stitches (201).

8. miniature circuit breaker according to claim 7, it is characterised in that: the circuit breaker housing (2) further includes first sliding Chamber (27) and second sliding chamber (26), first sliding chamber (27) setting plug wire hole (208) side and close to button mechanism (1), First baffle (5a) is slidably arranged in first sliding chamber (27), and second sliding chamber (26) are arranged in another plug wire hole (208) side And far from button mechanism (1), second baffle (6a) is slidably arranged in second sliding chamber (26), first sliding chamber (27) and the second sliding chamber (26) it communicates, the second drive rod (8a) is rotatably arranged on the connectivity part of first sliding chamber (27) and second sliding chamber (26), and second passes The both ends of lever (8a) are located in first sliding chamber (27) and second sliding chamber (26), and the both ends difference of the second drive rod (8a) It is connected with first baffle (5a), second baffle (6a) driving.

9. miniature circuit breaker according to claim 7, it is characterised in that: the first baffle (5a) include first baffle by Moved end (52a), first baffle linking arm (51a) and first baffle main body (50a), the first baffle linking arm both ends (51a) difference It is connected with first baffle by moved end (52a), first baffle main body (50a), first gear is arranged by the moved end side (52a) in first baffle Plate is slotted (53a) by moved end, and first baffle is connected by moved end fluting (53a) with STATEMENT OF FEDERALLY SPONSORED (7a) driving, first baffle main body Setting first baffle main body slots (54a) on the downside of (50a)；The second baffle (6a) include second baffle main body (60a) and The second baffle main body fluting (61a) being arranged on the downside of second baffle main body (60a)；Second drive rod (8a) includes second Drive rod trunk (80a), the second drive rod are by moved end (82a) and the second drive rod driving end (81a), the second drive rod trunk (80a) is pivotably arranged on circuit breaker housing (2), and the second drive rod is driven by moved end (82a) and first baffle main body fluting (54a) Dynamic to be connected, the second drive rod drives end (81a) to be connected with second baffle main body fluting (61a) driving.

10. miniature circuit breaker according to claim 2, it is characterised in that: further include leading-out terminal (100), leading-out terminal (100) Including conductive plate (102) and elastic component (101), conductive plate (102) is fixed on circuit breaker housing (2), elastic component (101) Including elastic component fixing end (1011) and elastic component crimping end (1010), elastic component fixing end (1011) is fixed at breaker On shell (2), elastic component crimping end (1010) and conductive plate (102) Elastic Contact, and elastic component crimping end (1010) and plug wire Hole (208), hole of taking out stitches (201) are correspondingly arranged, and external wire passes through plug wire hole (208) insertion elastic component crimping end (1010) and leads Between battery plate (102), the reset force at elastic component crimping end (1010) by external wire be pressed on elastic component crimping end (1010) and Between conductive plate (102), pressure is applied to elastic component crimping end (1010) by hole of taking out stitches (201), makes elastic component crimping end (1010) it separates, external wire can be extracted at plug wire hole (208) with external wire.

11. miniature circuit breaker according to claim 1, it is characterised in that: the instruction device further includes that instruction device is multiple Position part (9a), after button mechanism (1) resets, instruction device resets under the action of instruction device return unit (9a) and leaves finger Show hole.