CN208507566U - A kind of miniature circuit breaker of internally provided with vacuum contact head mechanism - Google Patents

Abstract

The utility model discloses a kind of miniature circuit breakers of internally provided with vacuum contact head mechanism, belong to the technical field of electrical equipment, including breaker body, vacuum contact head mechanism, electromagnet, driving device and buckle releaser, the buckle releaser is rotatably dispose on breaker body, the driving device is for driving the buckle releaser to rotate, and the end of buckle releaser is equipped with abutting portion；The electromagnet is equipped with executive module, and executive module is for pushing the buckle releaser rotation tripping；Vacuum contact head mechanism includes hollow housing, and the inner cavity of the hollow housing is sealedly connected with static contact and end cap by the end that partition is divided into vacuum extinction area and behaviour area and the two respectively；Movable sleeve is connected to moving contact on the partition, it is socketed on moving contact for driving its sliding to reset tower-shaped spring, to reach the vacuum contact head realization by application through structure optimization to the optimization of inside structure of miniature circuit breaker, to reduce the purpose of miniature circuit breaker overall volume.

Description

A kind of miniature circuit breaker of internally provided with vacuum contact head mechanism

Technical field

The utility model belongs to the technical field of electrical equipment, in particular to a kind of internally provided with vacuum contact head mechanism Miniature circuit breaker.

Background technique

Miniature circuit breaker is most popular a kind of terminal protection electric appliance during building electrical terminal power distribution equipment is drawn.It is micro- Type breaker is made of operating mechanism, contact, protective device (various buckle releasers), arc quenching system etc..Its main contacts is by manual Operation or electric switch-on.After main contacts closure, free tripping mechanism locks main contacts on closing position.Overcurrent trip Coil and the thermal element of thermal trip connect with main circuit, the coil and power sources in parallel of under-voltage release.When circuit occurs When short circuit or heavy overload, overcurrent trip mechanism action, main contacts disconnects main circuit.When circuit overloads, thermal trip Thermal element fever make to be bent on bimetal leaf, push free tripping mechanism movement.

And vacuum switch tube is the core devices of vacuum switch (breaker, contactor, on-load switch etc.), is widely used in The national economy every profession and trade such as electric power, metallurgy, machinery, mine, traffic, national defence, military project, scientific research, industry, agricultural, is national development Indispensable important devices；It is the renewal product for replacing traditional oil circuit breaker, has small in size, light weight, cut-offs Capacity is big, use reliability is high and the remarkable advantages such as easy to maintain, it has also become the direction of domestic and international switch industry development and application.

The critical component of vacuum contact head miniature circuit breaker is vacuum switch tube, by the movement of tripping mechanism, is driven true Connecting or disconnecting between contact electrode in empty switching tube, thus realize the opening and closing lock of miniature circuit breaker, it is existing miniature disconnected Road device is primarily present following defect:

Since miniature circuit breaker is open contact mechanism, breaking capacity is improved by arc-chute arc extinguishing.Due to arc-chute Volume is limited by space, and arc extinguishing ability is difficult to improve, breaking capacity 6kA under general case, is unable to satisfy particular surroundings use.

Utility model content

In view of this, in order to solve the above problems existing in the present technology, the utility model aim is to provide in one kind The miniature circuit breaker of vacuum contact head mechanism is set to reach the vacuum contact head realization by application through structure optimization to miniature disconnected The optimization of inside structure of road device, to reduce the purpose of miniature circuit breaker overall volume.

The technology employed by the present utility model is a kind of miniature circuit breaker of internally provided with vacuum contact head mechanism, including Breaker body further includes vacuum contact head mechanism, electromagnet, driving device and the buckle releaser being assemblied in breaker body, The buckle releaser is rotatably dispose on breaker body, and the driving device is for driving the buckle releaser to rotate, and buckle releaser End be equipped with abutting portion；The electromagnet is equipped with executive module, and executive module is for pushing the buckle releaser rotation tripping；

Vacuum contact head mechanism includes the hollow housing of both ends open, and the inner cavity of the hollow housing passes through partition point It is divided into vacuum extinction area and behaviour area, the end of vacuum extinction area and behaviour area is sealedly connected with static contact and end cap respectively；Institute It states movable sleeve on partition and is connected to moving contact corresponding with the static contact, the other end of moving contact and the end cap phase movable sleeve It connects and the end offsets with the abutting portion；Be socketed with bellows on the moving contact, the both ends of bellows respectively with partition It is tightly connected with moving contact and the inside of bellows is connected to form vacuum chamber with vacuum extinction area；The inside of the recreation room is equipped with The tower-shaped spring being placed on the moving contact, tower-shaped spring is for driving moving contact sliding to reset.

Further, the buckle releaser includes the tripping ontology being rotatably dispose on the breaker body, the tripping The side of ontology is equipped with lower locking plate, and the side of lower locking plate is equipped with rebound part；It is equipped in the breaker body and rebound part phase The rotary column of abutting；It is hinged with conflict STATEMENT OF FEDERALLY SPONSORED in the tripping ontology, the one end for contradicting STATEMENT OF FEDERALLY SPONSORED is equipped with and the lower locking plate The upper lock plate to match, the other end is equipped with the abutting portion, and is equipped with seaming on the opposed end of upper lock plate and lower locking plate.

Further, the rebound part is set as arc spring lamination, and one end of arc spring lamination is connected on the lower locking plate and arc Shape elastic slice can be rotated around the rotary column.

Further, the driving device includes combined floodgate spanner and connecting rod, and the combined floodgate spanner is rotatably dispose in described On breaker body, and the end of combined floodgate spanner and connecting rod is rotatablely connected, and the other end of connecting rod and the upper lock plate are hinged Connection.

Further, the executive module includes the execution frame being loaded on the electromagnet, is cut with scissors respectively on the execution frame It is connected to the first executive item and the second executive item, one end of the first executive item is corresponding with the iron core of the electromagnet, other end sled Below the end for moving second executive item, and when the other end rotation of the second executive item, the buckle releaser rotation tripping is pushed.

Further, the inner cavity of the hollow housing is divided into the first stepped cavity and the second stepped cavity, the first stepped cavity and Two stepped cavities are internal diameter of the internal diameter less than the second stepped cavity of circular cavity and the first stepped cavity；The partition is set to the first rank The inside of terraced chamber.

Further, baffle is set on the moving contact；The tower-shaped spring is located at the inside of the second ladder cavity, tower The both ends of shape spring are against respectively on the bottom of the second stepped cavity and the surface of baffle.

Further, contact electrode is equipped on the static contact and the opposite end of moving contact.

Further, it is threadedly coupled between one end of the static contact and the end in vacuum extinction area and is equipped between the two Seal washer, the other end offer threaded interior hole, and threaded interior hole is equipped with connecting column, and connecting column is loaded on the breaker body It is interior.

Further, the moving contact in ladder shaft-like and is divided into the first multi-diameter shaft and the second multi-diameter shaft, the first multi-diameter shaft Outer diameter be greater than the second multi-diameter shaft outer diameter；The bellows-sheathed is in the outside of the first multi-diameter shaft and the end of bellows and dynamic touching The shoulder face of head is tightly connected.

The utility model has the following beneficial effects:

1, using the miniature circuit breaker of internally provided with vacuum contact head disclosed in the utility model mechanism, in breaker body Inside is equipped with vacuum contact head mechanism, and buckle releaser generates rotation under the action of driving device, and the abutting portion of buckle releaser end will The moving contact of vacuum contact head mechanism compresses and it is made to be in the state connected with static contact；When occurring loading in circuit or short When the case where road, work of electromagnet simultaneously drives executive module to act, and executive module pushes buckle releaser to rotate and promote in buckle releaser The lock position in portion is threaded off, abutting portion return under the impetus of moving contact, and drives upper lock plate dynamic by contradicting STATEMENT OF FEDERALLY SPONSORED Make, upper lock plate promotes driving device to act, due to application of the vacuum contact head mechanism in miniature circuit breaker, in conjunction with vacuum contact The design feature of head mechanism itself, simplifies the mechanical complexity of tripping mechanism inside miniature circuit breaker, simultaneously as vacuum The structure optimization of contact head mechanism is reduced the overall volume of miniature circuit breaker and is achieved；

2, movable sleeve is connected to moving contact, moving contact and static contact inside it for vacuum contact head mechanism in the present invention Point, close and carried out in the inside in vacuum extinction area, form vacuum chamber in the case where cooperate bellows, electric arc can be effectively prevent colored The generation of fire increases the service life and security reliability of vacuum contact head；By the way that tower-shaped spring is set in behaviour area Portion, tower-shaped spring can promote moving contact to separate with respect to static contact, meanwhile, the movement of moving contact can drive buckle releaser normally multiple Position is not necessarily to additional other structures, and tower-shaped spring can save internal occupied space in compression, to realize the whole of vacuum contact head The advantage that body is small in size, internal structure is simple；

3, the in-house moving contact of vacuum contact head is arranged to the structure of multi-diameter shaft, is conducive to the end of bellows It is sealedly connected at the shaft shoulder of moving contact, to guarantee moving contact when moving back and forth, the sealing performance of vacuum chamber is accessed well Holding, thus further promoted miniature circuit breaker job stability.

Detailed description of the invention

Fig. 1 is structure of the miniature circuit breaker of internally provided with vacuum contact head provided by the utility model mechanism in gate-dividing state Schematic diagram；

Fig. 2 is structure of the miniature circuit breaker of internally provided with vacuum contact head provided by the utility model mechanism in "on" position Schematic diagram；

Fig. 3 is vacuum contact head mechanism in the miniature circuit breaker of internally provided with vacuum contact head provided by the utility model mechanism Structural schematic diagram in off-state；

Fig. 4 is vacuum contact head mechanism in the miniature circuit breaker of internally provided with vacuum contact head provided by the utility model mechanism Structural schematic diagram when closing closed state.

Specific embodiment

It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Usually here in attached drawing description and The component of the utility model embodiment shown can be arranged and be designed with a variety of different configurations.

Therefore, requirement is not intended to limit to the detailed description of the embodiments of the present invention provided in the accompanying drawings below The scope of the utility model of protection, but it is merely representative of the selected embodiment of the utility model.Based in the utility model Embodiment, every other embodiment obtained by those of ordinary skill in the art without making creative efforts, all Belong to the range of the utility model protection.

It should be noted that in the absence of conflict, the feature in the embodiments of the present invention and embodiment can To be combined with each other.

It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.

In the description of the utility model embodiment, it should be noted that indicating position or positional relationship is based on attached drawings Shown in orientation or positional relationship or the utility model product using when the orientation or positional relationship usually put, or Orientation or positional relationship that those skilled in the art usually understand or the utility model product using when usually put Orientation or positional relationship is merely for convenience of describing the present invention and simplifying the description, rather than the dress of indication or suggestion meaning It sets or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as to the utility model Limitation.In addition, term " first ", " second " are only used for distinguishing description, it is not understood to indicate or imply relative importance.

In the description of the utility model embodiment, it is also necessary to which explanation is unless specifically defined or limited otherwise, art Language " setting ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally connect It connects；It can be and be directly connected to, can also be indirectly connected with by intermediary.For the ordinary skill in the art, may be used The attached drawing in the concrete meaning type embodiment of above-mentioned term in the present invention is understood with concrete condition, to the utility model reality The technical solution applied in example is clearly and completely described, it is clear that described embodiment is that the utility model a part is implemented Example, instead of all the embodiments.The component of the utility model embodiment being usually described and illustrated herein in the accompanying drawings can be with It arranges and designs with a variety of different configurations.

As Figure 1-Figure 2, the utility model provides a kind of miniature circuit breaker of internally provided with vacuum contact head mechanism 14, packet Breaker body 13 is included, carrier of the breaker body 13 as each part can play a protective role to each part, breaker Ontology 13 is in housing shape structure, and each component assembly further includes being assemblied in breaker body 13 in the inside of breaker body 13 Interior vacuum contact head mechanism 14, electromagnet 15, driving device and buckle releaser, the buckle releaser is rotated by first rotating shaft to be arranged In on breaker body 13, when buckle releaser is rotated clockwise, it can carry out closing and pull work；Conversely, when buckle releaser progress is inverse When hour hands rotate, trip action can be carried out.

The driving device is for driving the buckle releaser to rotate, and the end of buckle releaser is equipped with abutting portion, and buckle releaser exists It can be achieved the linkage of abutting portion in rotation process, abutting portion can carry out vacuum contact head mechanism 14 point, conjunction state Switching, to realize that the entirety of entire miniature circuit breaker connects or disconnects.

The electromagnet 15 is equipped with executive module, when occurring loading in circuit or when the situation of short circuit, electromagnet 15 It is powered and the iron core for passing through electromagnet 15 is attracted executive module, carry out corresponding actions, execution group to trigger executive module Part is for pushing the buckle releaser rotation tripping；After buckle releaser tripping, pass through the driving of vacuum contact head mechanism 14 Under effect, buckle releaser being capable of normal return.

As shown in Figure 3, Figure 4, above-mentioned vacuum contact head mechanism 14 includes the hollow housing 1 of both ends open, the hollow shell The inner cavity of body 1 is divided into vacuum extinction area 3 and behaviour area 4 by partition 2, and partition 2 is shaped in the interior of the hollow housing 1 The end of portion, vacuum extinction area 3 and behaviour area 4 is sealedly connected with static contact 5 and end cap 6 respectively, and static contact 5 and end cap 6 are filled With later, the inside of hollow housing 1 is in integrally closed state；Movable sleeve is connected to corresponding with the static contact 5 on the partition 2 Moving contact 7, the other end of moving contact 7 and the 6 phase pivot bush unit of end cap offer and dynamic touching on partition 2 and end cap 6 First 7 through-holes to match, with realize moving contact 7 be able to carry out free to slide and effectively divided between static contact 5, close it is dynamic Make, meanwhile, when moving contact 7 carry out it is free to slide during the abutting portion can be pushed to be moved, abutting portion is by supporting It touches STATEMENT OF FEDERALLY SPONSORED 19 and drives upper lock plate movement, upper lock plate promotes the driving device to act；Bellows is socketed on the moving contact 7 8, the both ends of bellows 8 are tightly connected respectively with partition 2 and moving contact 7 and the inside of bellows 8 is connected to shape with vacuum extinction area 3 At vacuum chamber, bellows 8 is mainly sealed the fit clearance between partition 2 and moving contact 7, good to form leakproofness Vacuum chamber, to vacuumized in vacuum chamber (such as: on static contact 5 equipped with the vacuum that is communicated inside vacuum extinction area 3 Air exhaust nozzle vacuumizes vacuum chamber with realizing, other evacuation process can also be used), make moving contact 7 and static contact 5 Between the two point, conjunction movement be under stable vacuum environment and carry out, can effectively avoid and generate electric arc when circuit is connected Spark；The inside of the recreation room is equipped with the tower-shaped spring 9 being placed on the moving contact 7, and tower-shaped spring 9 is for driving moving contact 7 slidings reset, on the one hand, tower-shaped spring 9 is used to provide active force to moving contact 7；On the other hand, tower-shaped spring 9 is realized；When micro- For the tripping mechanism of type circuit breaker internal after tripping, moving contact 7 can be between static contact 5 under the action of tower-shaped spring 9 It is separated, achievees the purpose that open circuit.

The buckle releaser includes the tripping ontology 16 being rotatably dispose on the breaker body 13, the tripping ontology 16 Side be equipped with lower locking plate 17, lower locking plate 17 and tripping ontology 16 are a whole part, and the side of lower locking plate 17 is equipped with back Bullet part, springing back between part and lower locking plate 17 has formation class " Y " font between gap and rebound part and lower locking plate 17, to guarantee back The normal work of bullet part；Be equipped in the breaker body 13 rotary column 22 to offset with rebound part spring back part can around rotary column 22 into Row rotation and during rotation rebound part, which are pressurized, generates elastic acting force, promotes the end of lower locking plate 17 and the end of upper lock plate 18 Cooperation is stung tight between portion；It is hinged in the tripping ontology 16 and contradicts STATEMENT OF FEDERALLY SPONSORED 19, contradicting STATEMENT OF FEDERALLY SPONSORED 19 can be relative to tripping originally Body 16 generates fine motion rotation, and the one end for contradicting STATEMENT OF FEDERALLY SPONSORED 19 is equipped with the upper lock plate 18 to match with the lower locking plate 17, another End is equipped with the abutting portion 20, and upper lock plate 18 contradicts STATEMENT OF FEDERALLY SPONSORED 19 and 20 three of abutting portion as a whole part, and upper lock plate 18 and lower locking plate 17 opposed end on be equipped with seaming, seaming is that lacking on 17 end of upper lock plate 18 and lower locking plate is arranged in Mouthful, when driving device work, driving device drives upper lock plate 18 to rotate clockwise, and upper lock plate 18 is by contradicting 19 band of STATEMENT OF FEDERALLY SPONSORED Dynamic abutting portion 20 also rotates clockwise, and abutting portion 20 pushes against the moving contact of vacuum contact head mechanism 14, and vacuum contact head is in On-state, meanwhile, when conflict STATEMENT OF FEDERALLY SPONSORED 19 rotates clockwise, tripping ontology 16 also follows rotation, threads off on ontology 16 Lower locking plate 17 is gradually held up upwards under the action of springing back part, and the seaming of upper lock plate 18 and the seaming of lower locking plate 17 is caused mutually to sting Clamping is closed, closes buckle-like state since upper lock plate 18 at this time can be in by the support of lower locking plate 17, entire buckle releaser, it can will be true Empty contact head mechanism 14 maintains a stable on-state.Preferably, the abutting portion 20 is set as L-type and contradicts plate, and L-type is supported The side support arm of touch panel can offset with the moving contact end of vacuum contact head mechanism 14, and other side support arm is electrically connected with One conductor wire 28.

The rebound part is set as arc spring lamination 21, and one end of arc spring lamination 21 is connected on the lower locking plate 17 and arc bullet Piece 21 can be rotated around the rotary column 22, be set as imploded arcs shape at the abutting position of arc spring lamination 21 and the rotary column 22, favorably It is rotated in arc spring lamination 21 relative to the rotary column 22, meanwhile, arc spring lamination 21 is pushed against on rotary column 22, can be to lower lock Plate 17 plays good rest effect, and good be engaged is able to carry out between lower locking plate 17 and upper lock plate 18 to realize.

The driving device includes combined floodgate spanner 23 and connecting rod 24, and the combined floodgate spanner 23 is set by the rotation of the second shaft It is placed on the breaker body 13, and the end of combined floodgate spanner 23 and connecting rod 24 is rotatablely connected, the other end of connecting rod 24 It is articulated and connected with the upper lock plate 18, connecting rod 24 is arranged to bending structure, when combined floodgate spanner 23 is rotated clockwise, closes Lock spanner 23 can drive upper lock plate 18 to rotate clockwise by connecting rod 24, more precisely, under the action of connecting rod 24, Upper lock plate 18 is gradually lifted up, at this point, abutting portion 20 pushes the moving contact 7 of vacuum contact head mechanism 14, moving contact 7 and stationary contact It is connected between first 5, combined floodgate spanner 23 is in "on" position；Conversely, when combined floodgate spanner 23 is rotated counterclockwise, combined floodgate spanner 23 can be acted by connecting rod 24, and since connecting rod 24 is in bending structure, under the action of connecting rod 24, upper lock plate 18 is first generated After the movement being slightly pressed downward, the movement being lifted up can be generated, its support is made at this point, upper lock plate 18 loses lower locking plate 17 With abutting portion 20 is pushed out by the moving contact 7 of vacuum contact head mechanism 14, and moving contact 7 is separated with static contact 5, is closed a floodgate Spanner 23 is in and opens a sluice gate state.

The executive module includes the execution frame 27 being loaded on the electromagnet 15, has been respectively articulated on the execution frame 27 First executive item 25 and the second executive item 26, the first executive item 25 are set as bending plate, one end of the first executive item 25 and the electricity The iron core of magnet 15 is corresponding, and when electromagnet 15 is powered, the iron core of electromagnet 15 can provide actuation to the first executive item 25 One end stress of effect, the first executive item 25 is pull-in on the iron core of electromagnet 15, and the other end agitates second executive item 26 End below, the second executive item 26 preferably use straight panel or straight-bar, at this point, the second executive item 26 is in the first executive item 25 It agitates to generate under effect and rotate clockwise, and when the other end rotation of the second executive item 26, push the buckle releaser rotation de- Button.Preferably, the end side of tripping ontology 16 towards second executive item 26 is arranged to inclined side, when second When executive item 26 rotates clockwise, the end of the second executive item 26 generates the effect being pressed downward to the side of the tripping ontology 16 Power, tripping ontology 16 generates rotational action counterclockwise, and the lower locking plate 17 threaded off on ontology 16 can be drawn close to the rotary column 22, At this point, the rebound part of 17 side of lower locking plate is by oppressive force, since tripping ontology 16 can be produced relative to the conflict STATEMENT OF FEDERALLY SPONSORED 19 Raw to relatively rotate, when the movement of the rotary column 22 is drawn close in the generation of lower locking plate 17, upper lock plate 18 does not generate movement, upper lock plate 18 and The separation of 17 moment of lower locking plate, upper lock plate 18 lose lower locking plate 17 and thread off to moment after its support effect；The vacuum contact head Moving contact inside mechanism 14 is under the reaction force of tower-shaped spring, and moving contact is stretched out to push abutting portion 20, and abutting portion 20 exists Under rotary action counterclockwise, upper lock plate 18 is driven by contradicting STATEMENT OF FEDERALLY SPONSORED 19, upper lock plate 18 is closed a floodgate by the driving of connecting rod 24 Spanner 23 rotates counterclockwise, and is returned in the state of opening a sluice gate.Preferably, it is equipped with torsional spring in the shaft of the second executive item 26, turns round Spring realizes the reset of the second executive item 26, and original state, the second executive item 26 is under the action of torsional spring, the end of the second executive item 26 The end of first executive item 25 is pressed downward by portion, and the first executive item 25 is separated with the iron core of electromagnet 15；When electromagnet 15 is powered Afterwards, iron core is attracted the first executive item 25, and the end of the first executive item 25 agitates the end of the second executive item 26, the second executive item 26 rotate clockwise and the other end of the second executive item 26 will push the tripping ontology 16, and tripping ontology 16 generates corresponding dynamic Make.

As Figure 3-Figure 4, the inner cavity of the hollow housing 1 is in stepped cavity shape, and the stepped cavity is divided into the first ladder Chamber and the second stepped cavity, the first stepped cavity and the second stepped cavity are interconnected and the two is located on same central axes, the first ladder Chamber and the second stepped cavity are internal diameter of the internal diameter less than the second stepped cavity of circular cavity and the first stepped cavity；The partition 2 is set In the inside of the first stepped cavity.

Baffle 10 is set on the moving contact 7, baffle 10 is set as annular disk and is equipped on the surface of annular disk to separate Gap, to realize that baffle 10 can cover on moving contact 7, the surface of moving contact 7 is equipped with the ring to match with annular disk inner hole Shape slot, annular disk can fasten the inside for being clamped on annular groove, be pushed against with the end to tower-shaped spring 9；The tower-shaped bullet Spring 9 is located at the inside of the second ladder cavity, and the both ends of tower-shaped spring 9 are against the bottom of the second stepped cavity and the table of baffle 10 respectively On face, tower-shaped spring 9 can save space upper to greatest extent when shrinking, meanwhile, when tower-shaped spring 9 is in release, tower-shaped bullet Spring 9 can provide reaction force to moving contact 7, enable moving contact 7 that the abutting portion 20 to be pushed to generate corresponding movement, pass through Internal mechanical linkage is in combined floodgate spanner 23 in the state of separating brake.

It is equipped with contact electrode 11 on the static contact 5 and the opposite end of moving contact 7, contact electrode 11 can be stationary contact First 5 perhaps a part of moving contact 7 be also possible to contact electrode 11 and be shaped on static contact 5 or moving contact 7, as Preferably, the contact electrode 11 is cylindrical, and 11 surface of contact electrode is provided with the silver-tin layer of resistance to scaling loss, silver-oxidation The tin layer of resistance to scaling loss can further promote the service life of contact electrode 11, and two contact electrodes 11 is prevented to be repeated Generation high temperature scaling loss, promotes the service life of vacuum contact head during dividing, closing.

It is threadedly coupled between one end of the static contact 5 and the end in vacuum extinction area 3 and is equipped with gasket between the two Circle, seal washer can promote the assembly leakproofness between static contact 5 and vacuum extinction area 3, and the other end offers threaded interior hole 12, Threaded interior hole 12 connects conductive column 29 for static contact 5, and conductive column 29 is assemblied in the inside of the breaker body 13, Ji Nengshi The connection of existing circuit, and be able to achieve and the inside for being assemblied in the breaker body is carried out to entire vacuum contact head mechanism, and lead Electric column 29 is electrically connected with the second conductor wire, and the second conductor wire is connected in circuit pathways with above-mentioned first conductor wire 28, with reality The normal function of existing miniature circuit breaker, and being linked and packed to stablize and fit in by conductive column 29 of vacuum contact head mechanism 14 The inside of miniature circuit breaker, installation process is simple, efficient, does not need to carry out changing for other structures in the inside of miniature circuit breaker Into.

The moving contact 7 is in ladder shaft-like and is divided into the first multi-diameter shaft and the second multi-diameter shaft, and the outer diameter of the first multi-diameter shaft is big In the outer diameter of the second multi-diameter shaft；First multi-diameter shaft is placed on the first ladder with through-hole phase pivot bush unit, bellows 8 on partition 2 The outside of axis and the sealed connection of the shoulder face of the end of bellows 8 and moving contact 7, bellows 8 can be by moving contact 7 and partition Fit clearance between 2 is sealed.

Preferably, in actual application process, due to static contact 5 with moving contact 7 in connecting conducting process, may Fever phenomenon is generated, several heat release holes can be offered on end cap 6, since design has the knot of bellows 8 in hollow housing 1 Structure, heat release hole do not interfere with the leakproofness of vacuum chamber, and the setting of heat release hole can promote air of the moving contact 7 in conducting process Circulation, to carry out good heat dissipation, the service life and durability of further hoisting mechanism.

The utility model is not limited to above-mentioned optional embodiment, anyone can obtain under the enlightenment of the utility model Other various forms of products, however, making any variation in its shape or structure, all the utility model rights that falls into are wanted The technical solution in confining spectrum is sought, is all fallen within the protection scope of the utility model.

Claims (10)

1. a kind of miniature circuit breaker of internally provided with vacuum contact head mechanism, including breaker body, which is characterized in that further include assembly In vacuum contact head mechanism, electromagnet, driving device and buckle releaser in breaker body, the buckle releaser is rotatably dispose in disconnected On the device ontology of road, the driving device is for driving the buckle releaser to rotate, and the end of buckle releaser has abutting portion；The electricity Magnet is equipped with executive module, and executive module is for pushing the buckle releaser rotation tripping；

Vacuum contact head mechanism includes the hollow housing of both ends open, and the inner cavity of the hollow housing is divided by partition The end of vacuum extinction area and behaviour area, vacuum extinction area and behaviour area is sealedly connected with static contact and end cap respectively；It is described every Movable sleeve is connected to moving contact corresponding with the static contact on plate, the other end of moving contact and the end cap phase pivot bush unit and The end offsets with the abutting portion；Be socketed with bellows on the moving contact, the both ends of bellows respectively with partition and dynamic Contact is tightly connected and the inside of bellows is connected to form vacuum chamber with vacuum extinction area；The inside of the recreation room is equipped with and is placed on Tower-shaped spring on the moving contact, tower-shaped spring is for driving moving contact sliding to reset.

2. the miniature circuit breaker of internally provided with vacuum contact head according to claim 1 mechanism, which is characterized in that the buckle releaser Including the tripping ontology being rotatably dispose on the breaker body, the side of the tripping ontology is equipped with lower locking plate, and lower lock The side of plate is equipped with rebound part；The rotary column to offset with rebound part is equipped in the breaker body；Hinge in the tripping ontology It is connected to conflict STATEMENT OF FEDERALLY SPONSORED, the one end for contradicting STATEMENT OF FEDERALLY SPONSORED is equipped with the upper lock plate to match with the lower locking plate, and the other end is equipped with institute Abutting portion is stated, and is equipped with seaming on the opposed end of upper lock plate and lower locking plate.

3. the miniature circuit breaker of internally provided with vacuum contact head according to claim 2 mechanism, which is characterized in that the rebound part It is set as arc spring lamination, one end of arc spring lamination is connected on the lower locking plate and arc spring lamination can be rotated around the rotary column.

4. the miniature circuit breaker of internally provided with vacuum contact head according to claim 2 mechanism, which is characterized in that the driving dress It sets including combined floodgate spanner and connecting rod, the combined floodgate spanner is rotatably dispose on the breaker body, and combined floodgate spanner and company The end of extension bar is rotatablely connected, and the other end of connecting rod and the upper lock plate are articulated and connected.

5. the miniature circuit breaker of internally provided with vacuum contact head according to claim 1 mechanism, which is characterized in that the execution group Part includes the execution frame being loaded on the electromagnet, has been respectively articulated with the first executive item and the second executive item on the execution frame, One end of first executive item is corresponding with the iron core of the electromagnet, and the other end agitates below the end of second executive item, And second executive item the other end rotation when, push buckle releaser rotation tripping.

6. the miniature circuit breaker of internally provided with vacuum contact head according to claim 1 mechanism, which is characterized in that the hollow shell The inner cavity of body is divided into the first stepped cavity and the second stepped cavity, and the first stepped cavity and the second stepped cavity are circular cavity and the first rank Internal diameter of the internal diameter of terraced chamber less than the second stepped cavity；The partition is set to the inside of the first stepped cavity.

7. the miniature circuit breaker of internally provided with vacuum contact head according to claim 1 mechanism, which is characterized in that the moving contact On be set with baffle；The tower-shaped spring is located at the inside of the second ladder cavity, and the both ends of tower-shaped spring are against second-order respectively On the bottom of terraced chamber and the surface of baffle.

8. the miniature circuit breaker of internally provided with vacuum contact head according to claim 1 mechanism, which is characterized in that the static contact Contact electrode is equipped on the end opposite with moving contact.

9. the miniature circuit breaker of internally provided with vacuum contact head according to claim 1 mechanism, which is characterized in that the static contact One end and the end in vacuum extinction area between be threadedly coupled and be equipped with seal washer between the two, the other end offers in screw thread Hole, threaded interior hole are equipped with connecting column, and connecting column is loaded in the breaker body.

10. the miniature circuit breaker of internally provided with vacuum contact head according to claim 1 mechanism, which is characterized in that the dynamic touching Head is in ladder shaft-like and is divided into the first multi-diameter shaft and the second multi-diameter shaft, and the outer diameter of the first multi-diameter shaft is greater than the outer of the second multi-diameter shaft Diameter；The bellows-sheathed is in the outside of the first multi-diameter shaft and the sealed connection of the shoulder face of the end of bellows and moving contact.