CN207925420U - a kind of breaker mechanism - Google Patents

Abstract

The utility model discloses a kind of breaker mechanisms, including pedestal and end cap, pedestal is equipped with the thrermostatic bimetal-plate for the deformation that can generate heat when circuital current is excessive, and the lock of connecting and disconnecting of the circuit can be changed, being equipped between thrermostatic bimetal-plate and lock can push lock to change the pull rod of connecting and disconnecting of the circuit when thrermostatic bimetal-plate deforms, thrermostatic bimetal-plate is equipped with to limit the dropout of pull rod displacement range in flakes, it threads off and is located at thrermostatic bimetal-plate in flakes towards lock side, dropout is equipped with the limit hole of the bar shaped of cross direction profiles in flakes, and limit hole is connected with one end of pull rod.Breaker mechanism pull rod provided by the utility model is connected between thrermostatic bimetal-plate by threading off in flakes, is threaded off and is equipped with bar shaped limit hole in flakes, and the length travel of pull rod and lateral moving range can be limited, to ensure the stability of breaker mechanism work.

Description

A kind of breaker mechanism

Technical field

The utility model is related to electric elements technical field, more particularly to a kind of breaker mechanism.

Background technology

Breaker mechanism is a kind of common electric elements, and when short circuit or overload, breaker mechanism can be timely By circuitry cuts, avoid circuit because electric current is excessive from causing to generate heat and cause fire, breaker mechanism cut-out short circuit or overload circuit Operation mainly completed by thermal tripping linkage.

Thermal tripping linkage connects thrermostatic bimetal-plate using pull rod, and thrermostatic bimetal-plate temperature distortion can pull pull rod, To change control circuit switch position, will switch by be connected position switch to cut-out position.But thermal tripping in the prior art Linkage stability is poor, and rod stroke not enough causes circuit that can not cut off or stroke is excessive causes pull rod stuck with shell.

Therefore, how to provide a kind of breaker mechanism that stability is good is that those skilled in the art need the technology solved to ask Topic.

Utility model content

The purpose of this utility model is to provide a kind of breaker mechanism, good operating stability, when circuital current is excessive Circuit can be cut off, circuit can stablize reset after restoring.

To achieve the above object, the utility model provides a kind of breaker mechanism, including pedestal and end cap, the pedestal are set Have and allow to the thrermostatic bimetal-plate of fever deformation when circuital current is excessive, and the lock of connecting and disconnecting of the circuit can be changed, the heat Being equipped between bimetal leaf and the lock can push the lock to change connecting and disconnecting of the circuit when the thrermostatic bimetal-plate deforms Pull rod, the thrermostatic bimetal-plate is equipped with to limit the dropout of the pull rod displacement range in flakes, and the dropout is located in flakes The thrermostatic bimetal-plate is equipped with the limit hole of the bar shaped of cross direction profiles, the limit in flakes towards the lock side, the dropout Position hole is connected with one end of the pull rod.

Preferably, the dropout is set to the thrermostatic bimetal-plate upper end in flakes.

Preferably, the pedestal is equipped with to adjust the movable adjustment section of the thrermostatic bimetal-plate lateral position, and With the movable matched fixed adjustment section of adjustment section, the end cap is equipped with the protrusion to the fixation movable adjustment section Portion.

Preferably, further include the conducting wire and the pedestal to by the conducting wire of the thrermostatic bimetal-plate and circuit turn-on Between be equipped with cooling fin, the pedestal be equipped with to the fixation cooling fin pilaster.

Preferably, the pedestal is equipped with to the roller bearing hinged with the lock, and the end cap is equipped with described to connect The periphery of the mounting hole of roller bearing, the mounting hole is equipped with to limit the limit of the roller bearing displacement when the roller bearing overheats Portion.

Preferably, the pedestal, which is additionally provided with, is connected with circuit, to generate the conductive plate in magnetic field, and the pedestal is additionally provided with use To coordinate to enhance the ferromagnetic section in magnetic field with the conductive plate, it is equipped with above the ferromagnetic section and the pedestal is hinged, Neng Gou The armature rotated under the attraction in magnetic field, the end of the armature are matched with the lock, and the pedestal is additionally provided with to by institute State the elastic portion that armature is pulled to the direction opposite with the conductive plate.

Preferably, the ferromagnetic section is yoke, and the yoke has the plate face perpendicular to the end cap, the plate face and institute Conductive plate fitting is stated, the both sides that the plate face is located at the conductive plate are all provided with the bending part for being parallel to the end cap, described in two Bending part is equipped with the through-hole in impenetrating thickness direction, and the end cap, which is equipped with, to be coordinated with the fixation yoke with the through-hole First fixed column.

Preferably, the gap with predetermined width between first fixed column and the plate face, the conductive plate is described in It passes through in gap and is bonded with the plate face.

Preferably, the armature is located above the plate face, and two bending parts are equipped with to coordinate with the armature Actuation inclined-plane.

Preferably, the armature is equipped with close to the side of the lock to push the push plate of the lock, the lock Bottom end, which is equipped with, to be coordinated with the push plate to increase the arc angle structure of thrust.

The principle of breaker overload protection is to bend after thrermostatic bimetal-plate is heated, to pull pull rod to bending direction Mobile, pull rod is connected with the lock of control circuit break-make, and when thrermostatic bimetal-plate is bent to a certain extent, pull rod pulls lock To the off position of cut-out circuit, circuit overloads protection is realized.The lower end of thrermostatic bimetal-plate is fixed, thermo bimetal's on piece each point Lateral displacement is approximately equal to the product of the deflection angle of thrermostatic bimetal-plate and the height of point, and pull rod is taken with thrermostatic bimetal-plate in the prior art It connects, when thrermostatic bimetal-plate is bent, pull rod can be slided to thrermostatic bimetal-plate fixing end, therefore pull rod lateral displacement is caused to reduce, Stroke deficiency is in turn resulted in, causes lock that can not be moved to off position.

Breaker mechanism thermo bimetal on piece provided by the utility model, which is equipped with, threads off in flakes, and threading off in flakes has laterally The limit hole of distribution, one end of pull rod are connected with de- mouth, and the other end is set in limit hole, and dropout can limit pull rod along heat in flakes Displacement in bimetal leaf short transverse, when thrermostatic bimetal-plate is bent, the lateral displacement of pull rod will not reduce to ensure to lock Detain the stability threaded off.

Description of the drawings

In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only It is the embodiments of the present invention, for those of ordinary skill in the art, without creative efforts, also Other attached drawings can be obtained according to the attached drawing of offer.

Fig. 1 is that the structure of thermal release device in a kind of specific implementation mode of breaker mechanism provided by the utility model is shown It is intended to；

Fig. 2 is the structural schematic diagram threaded off in flakes in Fig. 1；

Fig. 3 is the structural schematic diagram of end cap in a kind of specific implementation mode of breaker mechanism provided by the utility model；

Fig. 4 is the structure of pedestal and cooling fin in a kind of specific implementation mode of breaker mechanism provided by the utility model Schematic diagram；

Fig. 5 is that the structure of limiting section in a kind of specific implementation mode pedestal of breaker mechanism provided by the utility model is real Body figure；

Fig. 6 is the structure of magnetic tripping mechanism in a kind of specific implementation mode of breaker mechanism provided by the utility model Schematic diagram.

Specific implementation mode

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work The every other embodiment obtained, shall fall within the protection scope of the present invention.

In order to make those skilled in the art more fully understand the utility model, below in conjunction with the accompanying drawings and specifically The utility model is described in further detail for embodiment.

It is heat in a kind of specific implementation mode of breaker mechanism provided by the utility model to please refer to Fig.1 to Fig. 6, Fig. 1 The structural schematic diagram of trip gear；Fig. 2 is the structural schematic diagram threaded off in flakes in Fig. 1；Fig. 3 is provided by the utility model disconnected The structural schematic diagram of end cap in a kind of specific implementation mode of road device mechanism；Fig. 4 is breaker mechanism provided by the utility model The structural schematic diagram of pedestal and cooling fin in a kind of specific implementation mode；Fig. 5 is breaker mechanism provided by the utility model The structural solid figure of limiting section in a kind of specific implementation mode pedestal；Fig. 6 is breaker mechanism one provided by the utility model The structural schematic diagram of magnetic tripping mechanism in kind specific implementation mode.

Breaker mechanism provided by the utility model, as shown in Figure 1, including pedestal 1 and end cap 2, pedestal 1 is equipped with lock 11, pull rod 13 and thrermostatic bimetal-plate 15, lock 11 is hinged with one end of pull rod 13, and thrermostatic bimetal-plate 15, which is equipped with, threads off in flakes 14, Thread off in flakes 14 be equipped with cross direction profiles bar shapeds limit hole 142, the other end of pull rod 13 is set in limit hole 142.

When circuital current is excessive, 15 fever expansion of thrermostatic bimetal-plate, since two kinds of expansion of metal rates are different, thermo bimetal Piece 15 occurs bending and deformation, thread off in flakes 14 with thrermostatic bimetal-plate 15 bending generate transverse shifting, the side of limit hole 142 with Pull rod 13 is bonded, and pulls 13 transverse shifting of pull rod, and then lock 11 is driven to turn to off position.Since breaker mechanism is hollow Between limit, thread off and 14 be located at thrermostatic bimetal-plate 15 towards latching 11 sides in flakes.

Lock 11, pull rod 13, thrermostatic bimetal-plate 15 and dropout 14 together constitute thermal release device in flakes, and effect is such as It is upper described, it is to avoid conducting wire and element over-temperature in circuit from causing fire to cut off circuit in time in circuit overloads.

It should be noted that limit hole 142 is the constant strip-type hole of width, the limit in the utility model in Fig. 1 and Fig. 2 Position hole 142 can be the strip-type hole that width is gradually wide from left to right or width is tapered, and the center line of certain limit hole 142 may be Curve does not limit herein.

Transverse direction in the application refers to the direction of the thrermostatic bimetal-plate 15 in Fig. 1, and corresponding longitudinal direction refers to being parallel to The direction of thrermostatic bimetal-plate 15 in Fig. 1, laterally setting refers to that limit hole 142 is approximately perpendicular to thrermostatic bimetal-plate 15 to limit hole 142, Certainly it is not considered critical herein, limit hole 142 can also have smaller predetermined angle between the normal of thrermostatic bimetal-plate 15.

14 structures in flakes of threading off are as shown in Fig. 2, including ontology 141 in flakes and fixed bending part, limit hole 142 is located in flakes Ontology 141, thrermostatic bimetal-plate 15 are connected with fixed bending part, and the two can be attached by way of welding or riveting, certainly Being fixedly connected for other forms can also be used, is not limited herein.

In addition, lock 11 is connected with elastomeric element, when pull rod 13 pulls lock 11 to turn over certain angle, lock 11 can be Off position is rapidly switched under the resilient force of elastomeric element, pull rod 13 also can be quickly along cross when latching 11 quick rotation To movement, pull rod 13 does not have cross spacing in the prior art, so be easy to cause pull rod 13 after quick rotation with pedestal 1 and end The shell collision that lid 2 is constituted, occurs dieback phenomenon, is adjusted after needing to disassemble breaker mechanism if 13 dieback of pull rod It is whole.The pull rod 13 of the utility model is set in limit hole 142, and limit hole 142 is capable of the lateral displacement of finite limitation pull rod 13, from And quick lateral movement back stay 13 is avoided to be collided with shell, prevent the generation of dieback phenomenon, improves breaker mechanism work The stability of work.

The lower end of thrermostatic bimetal-plate 15 is relatively fixed, it is clear that when thrermostatic bimetal-plate 15 is heated, the lateral displacement of the upper end It is maximum.For increase pull rod 13 stroke, thread off in flakes 14 be set to thrermostatic bimetal-plate 15 upper end, when thrermostatic bimetal-plate 15 be bent When, dropout 14 can obtain maximum lateral displacement in flakes, and then the lateral displacement of pull rod 13 is made to increase, it is ensured that breaker mechanism The stability of work.

It is equipped in the present embodiment, between pull rod 13 and thrermostatic bimetal-plate 15 and threads off in flakes 14, pull rod 13, which is set to, threads off in flakes 14 Strip-type hole in, strip-type hole can limit the position of the lateral moving range of pull rod 13 and longitudinal direction, on the one hand can avoid pull rod 13 along the downslide of thrermostatic bimetal-plate 15 because causing stroke insufficient, and the accident that can not cut off circuit is caused to occur, and on the other hand limits The range of 13 transverse shifting of pull rod can be to avoid pull rod 13 collides shell and causes dieback phenomenon.

The position of thrermostatic bimetal-plate 15 is relatively fixed, specifically, the lower end of thrermostatic bimetal-plate 15 passes through movable adjustment section 18 It is fixed, pedestal 1 is equipped with fixed adjustment section 17, and movable adjustment section 18 is matched with fixed adjustment section 17, and movable adjustment Portion 18 can be relatively fixed the movement of adjustment section 17, so as to adjust the lateral position of thrermostatic bimetal-plate 15.It is movably adjusted in the present embodiment Whole 18 be adjustment screw, and fixed adjustment section is adjusting nut.

The prior art fixes adjustment screw by gluing, but gluing is not suitable for producing in enormous quantities, and the effect of gluing It is unstable, used in viscose glue there are the situations such as ageing failure, can cause if viscose glue aging adjust screw loosen, so that it is deposited In the possibility of transverse shifting.The end cap 2 of the utility model is equipped with to the lug boss 21 of fixed adjustment screw, please refers to Bright book attached drawing 3, when end cap 2 is matched with pedestal 1, lug boss 21 can resist adjustment screw and it is prevented to generate transverse shifting.

In addition, thrermostatic bimetal-plate 15, by conducting wire and circuit turn-on, when circuit overloads, conducting wire also will produce largely Heat, in the prior art conducting wire be directly bonded with shell, conducting wire generate heat be easy to cause shell thawing conducting wire is sticked, even Switch failure can be caused, is equipped with cooling fin 41 between conducting wire and pedestal 1 in the present embodiment, cooling fin 41 can be by conducting wire and pedestal 1 Isolation avoids the conducting wire of overheat from directly being contacted with pedestal 1 and shell is caused to stick conducting wire.Wherein 42 and 43 have avoid overheat Conducting wire, which is directly contacted with 1 side of pedestal, causes shell to stick conducting wire.Conducting wire is contacted with cooling fin 41, the heat energy that conducting wire generates It is enough transferred to cooling fin 41, cooling fin 41 and air contact area are larger, and can effectively shed heat；It radiates in the present embodiment Metal fin 41 can be selected in piece 41, and metal fin 41 can increase the water conservancy diversion area of electric current, improve the conductive effect of conducting wire, Heat dissipation high temperature resistant or other can certainly be selected to have the material of phase same-action as needed, do not limited herein.The present embodiment In conducting wire usually select braiding copper conductor, naturally it is also possible to select the conducting wire of aluminum conductor or other materials as needed, herein It does not limit.

As shown in figure 4, cooling fin 41 is set on pedestal 1, pedestal 1 is equipped with the pilaster to fixing cooling fins 41, this reality It applies cooling fin 41 in example and is equipped with the first fixed part 42 and the second fixed part 43, the second fixed part 43 has to horizontal direction bending Mounting portion, mounting portion are equipped with the connecting hole 44 in impenetrating thickness direction, and pilaster upper end is equipped with mounting hole, and roller bearing 12 is worn in the present embodiment It crosses connecting hole 44 with mounting hole to coordinate, to which cooling fin 41 to be fixed on pedestal 1, between certain cooling fin 41 and pedestal 1 Other modes may be used to be fixed, details are not described herein.

Lock 11 is connect by hinged mode with pedestal 1, and end cap 2 is equipped with mounting hole with pedestal 1, latches 11 roller bearing 12 are set in mounting hole, and lock 11 can be rotated around roller bearing 12.When circuit overloads, 15 calorific value of conducting wire and thrermostatic bimetal-plate Larger, heat is transferred to roller bearing 12 by lock 11, and 12 temperature of roller bearing is made to increase, and end cap 2 and pedestal 1 are usually by thermoplasticity material Material is made, once 12 temperature of roller bearing is excessively high, end cap 2, by thermal softening, makes the tensile strength of mounting hole side wall reduce with pedestal 1, pacifies Dress hole is not enough to the outside pulling force of the effect of bearing and roller bearing 12, in turn results in roller bearing 12 and shifts outward, causes contact of breaker Even disconnected point of poor contact.

The present embodiment is equipped in the periphery of mounting hole to limit the limiting section 51 of 12 displacement of roller bearing when roller bearing 12 overheats, As shown in figure 5, the usual suffered pulling force of roller bearing 12 is the elastic force of elastomeric element, limiting section 51 is arranged along the direction of elastic force, Both the tensile strength of mounting hole can have been improved, the material of limiting section 51 will not be excessively increased, what certain the present embodiment was provided Only a kind of 51 set-up mode of preferred limiting section, limiting section 51 can also be arranged as required into other shapes.When roller bearing 12 When overheat, the tensile strength of limiting section 51 remains unchanged, to improve the heat resistance of breaker mechanism.

In the present embodiment, end cap 2 is equipped with the lug boss 21 with adjustment screw cooperation, after end cap 2 is completed to assemble with pedestal 1 Lug boss 21 can offset with adjustment screw, to limit the displacement of adjustment screw, avoid adjustment screw after prolonged use It loosens.

When in order to ensure short circuit or overload, lock 11 can be by circuitry cuts, open circuit provided by the utility model Device mechanism is also provided with magnetic tripping mechanism, and magnetic tripping mechanism controls connecting and disconnecting of the circuit using electromagnetic induction principle.

Specifically, the structure of magnetic tripping mechanism is as shown in fig. 6, include conductive plate 61, ferromagnetic section and armature 63, conductive plate 61 and circuit turn-on, electric current passes through conductive plate 61, and when short-circuit, 61 surrounding of conductive plate generates a large amount of magnetic fields.Ferromagnetic section is solid with end cap 2 It is fixed, and be bonded with a side of conductive plate 61, ferromagnetic section can be specially iron plate or steel plate, and ferromagnetic section is after the magnetization of conductive plate 61 The magnetic field of conductive plate 61 can be enhanced.Armature 63 is set to the top of ferromagnetic section, and one end of armature 63 and end cap 2 are hinged, armature 63 are made of the ferrimagnets such as irony or nickel matter.When short-circuit, conductive plate 61 generates a large amount of magnetic fields, and end cap 2 is additionally provided with to incite somebody to action The elastic portion that armature 63 is pulled to the direction opposite with conductive plate 61, if electric current is in normal range (NR) in circuit, magnetic field pair The attraction of armature 63 is less than the pulling force of elastic portion, and armature 63 is at the position far from ferromagnetic section；Once electric current mistake in circuit It carries, magnetic field-enhanced caused by conductive plate 61, armature 63 turns to the position being bonded with ferromagnetic section, armature under the attraction in magnetic field The 63 open-top lock 11 of the other end, and then lock 11 is pushed to turn to off position, achieve the purpose that cut off circuit.

Elastic portion in the present embodiment is specially tension spring 64, and 63 middle part of armature is equipped with the connection for being connect with tension spring 64 Column, 64 one end of tension spring are connected with connecting pole, and the other end is connected with end cap 2, and usual state tension spring 64 is in contraction state, pull Armature 63 is far from ferromagnetic section.Electric current increases magnetic field-enhanced in circuit, and when attraction is more than the elastic force of tension spring 64, armature 63 exists The position being bonded with ferromagnetic section is turned under the attraction of conductive plate 61 around articulated shaft, pushes 11 cut-out circuit of lock, certainly elasticity Torsional spring or other elastic constructions can also be used in portion, do not limit herein.

Ferromagnetic section is specially yoke 62, and there is yoke 62 plate face perpendicular to end cap 2, plate face to be bonded with conductive plate 61, plate The both sides that face is located at conductive plate 61 are all provided with the bending part for being parallel to end cap 2, and two bending parts are equipped with the logical of impenetrating thickness direction Hole 621, end cap 2, which is equipped with, to be coordinated to fix the first fixed column of yoke 62 with through-hole 621.

The position of through-hole 621 is corresponding on two bending parts, and the first fixed column can pass through two through hole 621 by yoke 62 and end Lid 2 is fixed, and the shape of the first fixed column corresponds to the shape of through-hole 621, such as shown in Fig. 6, and through-hole 621 is rectangle, and first is solid The cross section of fixed column is also the width that rectangle and its width are approximately equal to through-hole 621, and through-hole 621 is similar when being other shapes, Details are not described herein.

To ensure that yoke 62 is fixed with 61 position of conductive plate, the gap with predetermined width between the first fixed column and plate face, Conductive plate 61 is passed through from gap and is bonded with plate face, and the width in gap is equal to the thickness of conductive plate 61, the first fixed column and plate Face is located at the both sides of conductive plate 61, and the lengthwise position of conductive plate 61 is made to fix.

Downward bending, end cap 2 are equal in two corners of 61 downward bending of conductive plate along longitudinal direction at the both ends of conductive plate 61 Equipped with the second fixed column 611, two the second fixed columns 611 limit lateral displacement of the conductive plate 61 to both direction respectively, to 61 position of conductive plate is set to fix.

Armature 63 is located above plate face, and the articulated shaft of armature 63 runs through two bending parts, and the width of armature 63 is less than or equal to two Distance between bending part, to prevent armature 63 stuck between two bending parts, the actuation inclined-plane that two bending parts are equipped with, the two of armature 63 Side is equipped with the stop arm extended to 63 outside of armature, and when armature 63 is bonded with ferromagnetic section, two stop arms are stuck in two actuation inclined-planes On, it prevents armature 63 and ferromagnetic section patch dead, avoids the occurrence of stuck.

In order to ensure that armature 63 can push 11 rotation of lock, armature 63 to be pushed being equipped with close to the side of lock 11 The push plate of lock 11,11 bottom ends of lock are equipped with release lever, and release lever, which has, to be coordinated with push plate to increase the arc angle structure of thrust.

Push plate is located at close to the side of lock 11, and push plate upwardly extends, and release lever 65 is located at the bottom end of lock 11, arc angle Structure refers to that release lever 65 is equipped with the extension extended to 63 side of armature, and the side of extension is de- with preset curvature Inclined-plane is detained, push plate and dropout contact of incline plane when armature 63 rotates, push plate, which moves downward, can push dropout inclined-plane separate to side The direction of armature 63 rotates, and to push 11 rotation of lock, achievees the purpose that lock 11 switching to off position.

In the present embodiment, magnetic tripping mechanism replaces coil in the prior art, the magnetic using conductive plate 61 and ferromagnetic section Inhaling tripping mechanism has many advantages, such as that simple in structure, stable and reliable for performance, trip action is sensitive.

It should be noted that in the present specification, such as first and second etc relational terms are used merely to one Entity is distinguished with other several entities, and without necessarily requiring or implying between these entities, there are any this actual Relationship or sequence.

Breaker mechanism provided by the utility model is described in detail above.Specific case used herein The principles of the present invention and embodiment are expounded, the explanation of above example is only intended to help to understand this practicality Novel method and its core concept.It should be pointed out that for those skilled in the art, not departing from this reality Under the premise of with new principle, several improvements and modifications can be made to this utility model, these improvement and modification are also fallen into In the protection domain of the utility model claims.

Claims (10)

1. a kind of breaker mechanism, including pedestal (1) and end cap (2), the pedestal (1) is equipped with can when circuital current is excessive Generate heat the thrermostatic bimetal-plate (15) of deformation, and can change the lock (11) of connecting and disconnecting of the circuit, the thrermostatic bimetal-plate (15) with The lock (11) can be pulled when the thrermostatic bimetal-plate (15) deform by being equipped between the lock (11) is led to changing circuit Disconnected pull rod (13), which is characterized in that the thrermostatic bimetal-plate (15) is equipped with to limit the pull rod (13) displacement range It threads off in flakes (14), (14) are located at the thrermostatic bimetal-plate (15) towards described lock (11) side in flakes for the dropout, described It threads off the limit hole (142) of the bar shaped for being equipped with cross direction profiles in flakes (14), the one of the limit hole (142) and the pull rod (13) End is connected.

2. breaker mechanism according to claim 1, which is characterized in that (14) are set to the double gold of the heat in flakes for the dropout Belong to piece (15) upper end.

3. breaker mechanism according to claim 2, which is characterized in that the pedestal (1) is equipped with described to adjust The movable adjustment section (18) of thrermostatic bimetal-plate (15) lateral position, and adjusted with the movable matched fixation of adjustment section (18) Whole (17), the end cap (2) are equipped with the lug boss (21) to the fixation movable adjustment section (18).

4. breaker mechanism according to claim 3, which is characterized in that further include to by the thrermostatic bimetal-plate (15) With the conducting wire of circuit turn-on, cooling fin (4) is equipped between the conducting wire and the pedestal (1), the pedestal (1) is equipped with to fixation The pilaster of the cooling fin (4).

5. breaker mechanism according to claim 4, which is characterized in that the pedestal (1) be equipped with to the lock (11) hinged roller bearing (12), the end cap (2) are equipped with to connect the mounting hole of the roller bearing (12), the mounting hole it is outer It is equipped in week to work as the limiting section (51) for limiting the roller bearing (12) displacement when the roller bearing (12) overheat.

6. according to the breaker mechanism described in claim 1 to 5 any one, which is characterized in that the end cap (2) be additionally provided with Circuit is connected, to generate the conductive plate (61) in magnetic field, the end cap (2) be additionally provided with to the conductive plate (61) coordinate with Enhance the ferromagnetic section in magnetic field, be equipped with above the ferromagnetic section with the end cap (2) it is hinged, can be rotated under the attraction in magnetic field Armature (63), the end of the armature (63) are matched with the lock (11), and the end cap (2) is additionally provided with to by the rank The elastic portion that iron (63) is pulled to the direction opposite with the conductive plate (61).

7. breaker mechanism according to claim 6, which is characterized in that the ferromagnetic section is yoke (62), the yoke (62) there is the plate face perpendicular to the end cap, the plate face to be bonded with the conductive plate (61), the end cap is located at described lead The both sides of battery plate (61) are all provided with the bending part for being parallel to the end cap, and two bending parts are equipped with the logical of impenetrating thickness direction Hole (621), the end cap (2), which is equipped with, to be coordinated with the first fixed column of the fixation yoke (62) with the through-hole (621).

8. breaker mechanism according to claim 7, which is characterized in that have between first fixed column and the plate face The gap of predetermined width, the conductive plate (61) pass through from the gap and are bonded with the plate face.

9. breaker mechanism according to claim 8, which is characterized in that the armature (63) is located above the plate face, Two bending parts are equipped with the actuation inclined-plane to coordinate with the armature (63).

10. breaker mechanism according to claim 9, which is characterized in that the armature (63) is close to the lock (11) Side be equipped with to push it is described lock (11) push plate, described lock (11) bottom end be equipped with the push plate cooperation to increase The arc angle structure of thrust.