CN207558722U - Double breaking points miniature circuit breaker - Google Patents
Double breaking points miniature circuit breaker Download PDFInfo
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- CN207558722U CN207558722U CN201721851891.7U CN201721851891U CN207558722U CN 207558722 U CN207558722 U CN 207558722U CN 201721851891 U CN201721851891 U CN 201721851891U CN 207558722 U CN207558722 U CN 207558722U
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- contact
- connecting rod
- static contact
- static
- circuit breaker
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Abstract
The utility model is related to a kind of double breaking points miniature circuit breakers,Including housing,Operating mechanism,Contact system,Magnetictrip,Contact system includes moving contact,First static contact,Second static contact,One end of first static contact is arranged on the stent of magnetictrip,The first stationary contact is provided on the other end of first static contact,Second static contact is arranged in housing,And second is provided with insulating barrier between static contact and moving contact,The second stationary contact is provided on one end of second static contact,And second the other end of static contact be connected into wire connection terminal,Corresponding first static contact on one end of moving contact,A contact site is respectively arranged at second static contact,Movable contact is both provided on two contact sites,Separation is provided in housing between the first static contact and the second static contact,Clamping plate between two contact sites,The utility model has high breaking,It is stable and reliable for performance,The advantages of service life is long.
Description
Technical field
The utility model is related to a kind of miniature circuit breakers, and in particular to a kind of double breaking points miniature circuit breaker.
Background technology
At present, the rapid development of power industry industry, miniature circuit breaker are widely applied to daily family as protective device
With in equipment and various public place electric wirings, it not only can with disjunction with connect normal load current, but also work as circuit
There is overload, short circuit when failures, automatically cut off circuit, the protection person and property safety.What existing miniature circuit breaker used
Disjunction structure is single-break formula, i.e., is matched by single moving contact with corresponding static contact and realize disjunction or closure, still
For single-break formula since electric current is larger in breaking course, current limiting performance is poor, and disjunction is not prompt enough between leading to contact, causes to touch
Head scaling loss is than more serious, so as to influence the service life of product.And the operating mechanism structure design of existing miniature circuit breaker is answered
Miscellaneous, leading to the miniature circuit breaker, there are the defects of divide-shut brake speed is slow, breaking capacity is poor.
Invention content
The purpose of the utility model is to overcome the defects of the prior art, provide a kind of high breaking, it is stable and reliable for performance, make
With the double breaking points miniature circuit breaker of long lifespan.
To achieve the above object, the utility model use a kind of double breaking points miniature circuit breaker, including housing, operating mechanism,
Contact system, magnetictrip, the contact system include with operating mechanism linkage setting moving contact, the first static contact,
Second static contact, one end of first static contact are arranged on the stent of magnetictrip, the other end of the first static contact
On be provided with the first stationary contact, second static contact is arranged in housing, and is set between the second static contact and moving contact
There is insulating barrier, the second stationary contact, and the other end connection of the second static contact are provided on one end of second static contact
Into in wire connection terminal, corresponding first static contact on one end of the moving contact is respectively arranged with one at the second static contact
Contact site is both provided with movable contact on two contact sites, be provided in the housing separate it is quiet in the first static contact and second
Clamping plate between contact, between two contact sites, on the both sides of clamping plate at corresponding first static contact, the second static contact and contact site
It is respectively arranged with a flash barrier.
The advantageous effect of above structure is：The small type circuit breaker operating mechanism has high breaking, stable and reliable for performance, use
The advantages of long lifespan, the moving contact of contact system use Double-breakpoint structure, can meet the needs of high current miniature circuit breaker, and
Clamping plate, flash barrier are provided between two movable contacts, improves the arc extinguishing ability of the breaker, enhances the disjunction energy of breaker
Power.
Particularly, the operating mechanism includes mechanism rack, the handle and hand being rotatably arranged in the first axle of mechanism rack
The first connecting rod of handle linkage setting, is rotatably arranged on the second axis of mechanism rack the second connecting rod set with first connecting rod linkage
And the third connecting rod set with second connecting rod linkage, the tension spring being connected between third connecting rod and the side plate of mechanism rack, mechanism rack
Third axis on rotation be provided with tripping, the lock being interlocked with tripping, the lock are provided on the 4th axis of mechanism rack
Reset tension spring is provided between the side plate of mechanism rack, the first connecting rod is connect with second connecting rod by U-shaped bar, described
It is corresponded in tripping and arcuate guide hole is provided at second connecting rod, one end of the U-shaped bar is set in arcuate guide hole, and can
It can reciprocatingly slide in arcuate guide hole with first connecting rod, the other end of the U-shaped bar is connected on handle, the third
On axis rotation be provided with the matched flap of U-shaped bar, torsional spring is provided between flap and the side plate of mechanism rack, is set on flap
There is the arc groove to fasten with U-shaped bar, the third connecting rod acts with second connecting rod and moving contact can be driven to act.It is closing a floodgate
During operation, rotational handle handle drives first connecting rod, the U-shaped bar on first connecting rod slides in arc guide groove, first connecting rod
Second connecting rod is driven, second connecting rod driving third connecting rod acts, when U-shaped bar slides into the arc convex portion of arc guide groove,
Moving contact stopping acts, and is rotated further handle, and after dead point is crossed by mechanism to be operated, U-shaped bar fastens with the arc groove on flap, the
Three-link driving moving contact is closed rapidly with static contact, the purpose closed a floodgate so as to fulfill moment.
Particularly, rotation is provided with indicator at corresponding second connecting rod in the housing, the indicator
Upper end is provided with arc indicating piece, is provided with the red mark that closes a floodgate on the upper surface of arc indicating piece at the indication window of corresponding housing
Will and green separating brake mark, and fixture block is provided on the side of arc indicating piece, the fixture block is installed on the recessed of second connecting rod
In slot and form being linked for indicator and second connecting rod.By there is the instruction with second connecting rod linkage setting in housing
Part, indicator are acted with the divide-shut brake of second connecting rod, are indicated so as to fulfill the divide-shut brake of indicator.
Particularly, bimetal leaf at lock, the lower part connection of bimetal leaf are corresponded on the stent of the magnetictrip
There is copper braid over braid, one end of copper braid over braid is connected on conductive plate, and one end of conductive plate is connected in outlet wire connection terminal, described
Lock on be provided with contradict bimetal leaf top driving lever.When circuit overloads, bimetal leaf temperature distortion, double gold
Belong to piece and stir the driving lever on latching, lock is with deducting points again from so as to fulfill the quick acting switching-off of breaker.
Particularly, top plate is provided on the push rod of the magnetictrip, conflict is provided on the lock and is being pushed up
The poke rod on plate top.When short circuit occurs for circuit, the push rod of magnetictrip pushes top plate, and top plate pushes stirring on lock
Bar, lock is detached with tripping, so as to fulfill the quick acting switching-off of breaker.
Description of the drawings
Fig. 1 is the first visual angle of the utility model embodiment internal structure chart.
Fig. 2 is the second visual angle of the utility model embodiment internal structure chart.
Fig. 3 is the exploded view of the utility model embodiment operating mechanism.
Fig. 4 removes the stereogram after side plate for the utility model embodiment operating mechanism.
Fig. 5 is the assembling figure of the utility model first connecting rod and second connecting rod, third connecting rod.
Fig. 6 is the assembling figure of the utility model embodiment clamping plate and flash barrier.
Fig. 7 is the assembling figure of the utility model embodiment indicator and housing.
Specific embodiment
As shown in Fig. 1~7, the utility model embodiment is a kind of double breaking points miniature circuit breaker, including housing 10, operation machine
Structure 20, contact system 30, magnetictrip 40, the operating mechanism 20 include mechanism rack 21, are rotatably arranged on mechanism rack 21
First axle 211 on handle 201, with the first connecting rod 22 of the linkage setting of handle 201, the with the linkage setting of first connecting rod 22
Two connecting rods 23, connect the third connecting rod 24 for being rotatably arranged on the second axis 212 of mechanism rack 21 and being set with the linkage of second connecting rod 23
The tension spring 241 being connected between third connecting rod 24 and the side plate 213 of mechanism rack 21 rotates setting on the third axis 214 of mechanism rack 21
There is tripping 25, the lock 26 being interlocked with tripping 25, the lock 26 and mechanism are provided on the 4th axis 215 of mechanism rack 10
Reset tension spring 261 is provided between the side plate 213 of frame 21, the first connecting rod 22 is connected with second connecting rod 23 by U-shaped bar 27
It connects, is corresponded in the tripping 25 and arcuate guide hole 251 is provided at second connecting rod 23, one end of the U-shaped bar 27 places
Can reciprocatingly slide in arcuate guide hole 251 in arcuate guide hole 251, and with first connecting rod 22, the U-shaped bar 27 it is another
One end is connected on handle 21, is rotated and is provided with and U-shaped 27 matched flap 28 of bar, flap 28 on the third axis 214
Torsional spring 29 is provided between the side plate 213 of mechanism rack 21, the arc groove 281 to fasten with U-shaped bar 27 is provided on flap 28,
The third connecting rod 24 acts with second connecting rod 23 and moving contact 31 can be driven to act.In closing operation, rotational handle hand
Handle drives first connecting rod, and the U-shaped bar on first connecting rod slides in arc guide groove, and first connecting rod drives second connecting rod, and second
Connecting rod driving third connecting rod action, when U-shaped bar slides into the arc convex portion of arc guide groove, moving contact stopping action, after
Continuous rotational handle, after dead point is crossed by mechanism to be operated, U-shaped bar fastens with the arc groove on flap, third connecting rod driving moving contact
It is closed with static contact rapidly, the purpose closed a floodgate so as to fulfill moment.As shown in Fig. 1,2,6, the contact system 30 include with
Moving contact 31, the first static contact 32, the second static contact 33 of the linkage setting of third connecting rod 24, the one of first static contact 32
End is arranged on the stent 41 of magnetictrip 40, and the first stationary contact 321 is provided on the other end of the first static contact 32, described
The second static contact 33 be arranged in housing 10, and insulating barrier 34, institute are provided between the second static contact 33 and moving contact 31
It is provided with the second stationary contact 331 on the one end of the second static contact 33 stated, and the other end of the second static contact 33 is connected into connecing
In line terminals 35, corresponding first static contact 32 on one end of the moving contact 31 is respectively arranged with one at second static contact 33
A contact site 311 is both provided with movable contact 312 on two contact sites 311, be provided in the housing 10 separate it is quiet first
Clamping plate 36 between 32 and second static contact 33 of contact, between two contact sites 311, corresponding first stationary contact on the both sides of clamping plate 36
A flash barrier 37 is respectively arranged at first 32, second static contact 33 and contact site 311.The small type circuit breaker operating mechanism has
High breaking, it is stable and reliable for performance, service life is long the advantages of, the moving contact of contact system can be met using Double-breakpoint structure
The demand of high current miniature circuit breaker, and clamping plate, flash barrier are provided between two movable contacts, improve the arc extinguishing of the breaker
Ability enhances the breaking capacity of breaker.
As shown in Fig. 1,2,7, rotation is provided with indicator 11, institute at corresponding second connecting rod 23 in the housing 10
The upper end of indicator 11 stated is provided with arc indicating piece 111, the instruction of corresponding housing 10 on the upper surface of arc indicating piece 111
Red close a floodgate mark and green separating brake mark are provided at window 101, and fixture block is provided on the side of arc indicating piece 111
112, the fixture block 112 is installed in the groove 231 of second connecting rod 23 and forms the linkage of indicator 11 and second connecting rod 23
Cooperation.By there is the indicator with second connecting rod linkage setting in housing, indicator is acted with the divide-shut brake of second connecting rod, from
And realize the divide-shut brake instruction of indicator.
As shown in Figure 1, corresponding on the stent 41 of the magnetictrip 40 latch bimetal leaf 42 at 26, bimetal leaf
42 lower part is connected with copper braid over braid 43, and one end of copper braid over braid 43 is connected on conductive plate 44, one end connection of conductive plate 44
In outlet wire connection terminal 45, the driving lever 361 contradicted on 42 top of bimetal leaf is provided on the lock 36.When circuit is sent out
During raw overload, bimetal leaf temperature distortion, bimetal leaf stirs the driving lever on lock, and lock is with deducting points again from so as to fulfill disconnected
The quick acting switching-off of road device.Top plate 46 is provided on the push rod 401 of the magnetictrip 40, is provided on the lock 36
Contradict the poke rod 362 on 46 top of top plate.When short circuit occurs for circuit, the push rod of magnetictrip pushes top plate, and top plate pushes away
Poke rod on dynamic lock, lock is detached with tripping, so as to fulfill the quick acting switching-off of breaker.
Claims (5)
1. a kind of double breaking points miniature circuit breaker, including housing, operating mechanism, contact system, magnetictrip, it is characterised in that：
The contact system include with operating mechanism linkage setting moving contact, the first static contact, the second static contact, described first
One end of static contact is arranged on the stent of magnetictrip, and the first stationary contact, institute are provided on the other end of the first static contact
The second static contact stated is arranged in housing, and insulating barrier is provided between the second static contact and moving contact, and described second
The second stationary contact is provided on one end of static contact, and the other end of the second static contact is connected into wire connection terminal, it is described
Corresponding first static contact on one end of moving contact is respectively arranged with a contact site at the second static contact, on two contact sites
Be provided with movable contact, be provided in the housing separation between the first static contact and the second static contact, two contact sites it
Between clamping plate, be respectively arranged with a flash barrier at corresponding first static contact, the second static contact and contact site on the both sides of clamping plate.
2. double breaking points miniature circuit breaker according to claim 1, it is characterised in that：The operating mechanism includes mechanism
Frame, the handle being rotatably arranged in the first axle of mechanism rack are set with the first connecting rod of handle linkage setting, with first connecting rod linkage
The second connecting rod put is rotatably arranged on the second axis of mechanism rack and the third connecting rod with second connecting rod linkage setting, is connected to
Tension spring between third connecting rod and the side plate of mechanism rack, on the third axis of mechanism rack rotation be provided with tripping, the 4th of mechanism rack the
The lock being interlocked with tripping is provided on axis, reset tension spring is provided between the lock and the side plate of mechanism rack, it is described
First connecting rod connect with second connecting rod by U-shaped bar, corresponded in the tripping and arcuate guide hole be provided at second connecting rod,
One end of the U-shaped bar is set in arcuate guide hole, and can be reciprocatingly slided in arcuate guide hole with first connecting rod, institute
The other end of U-shaped bar stated is connected on handle, on the third axis rotation be provided with the matched flap of U-shaped bar, turn
Torsional spring is provided between plate and the side plate of mechanism rack, the arc groove to fasten with U-shaped bar is provided on flap, the third connects
Bar acts with second connecting rod and moving contact can be driven to act.
3. double breaking points miniature circuit breaker according to claim 1 or 2, it is characterised in that：It is corresponding in the housing
Rotation is provided with indicator at second connecting rod, and the upper end of the indicator is provided with arc indicating piece, arc indicating piece it is upper
Red close a floodgate mark and green separating brake mark, and the side of arc indicating piece are provided on end face at the indication window of corresponding housing
On be provided with fixture block, the fixture block, which is installed in the groove of second connecting rod and forms the linkage of indicator and second connecting rod, matches
It closes.
4. double breaking points miniature circuit breaker according to claim 1 or 2, it is characterised in that：The branch of the magnetictrip
Bimetal leaf at lock is corresponded on frame, the lower part of bimetal leaf is connected with copper braid over braid, and one end of copper braid over braid is connected to conduction
On plate, one end of conductive plate is connected in outlet wire connection terminal, and conflict is provided on the lock on bimetal leaf top
Driving lever.
5. double breaking points miniature circuit breaker according to claim 2, it is characterised in that：On the push rod of the magnetictrip
Top plate is provided with, the poke rod contradicted on top plate top is provided on the lock.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721851891.7U CN207558722U (en) | 2017-12-26 | 2017-12-26 | Double breaking points miniature circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721851891.7U CN207558722U (en) | 2017-12-26 | 2017-12-26 | Double breaking points miniature circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207558722U true CN207558722U (en) | 2018-06-29 |
Family
ID=62660578
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721851891.7U Active CN207558722U (en) | 2017-12-26 | 2017-12-26 | Double breaking points miniature circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207558722U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110459443A (en) * | 2019-09-09 | 2019-11-15 | 温州东极电气有限公司 | A kind of fast reaction dual-interruption point breaker |
| CN111952130A (en) * | 2020-06-29 | 2020-11-17 | 深圳微羽智能科技有限公司 | Double-breakpoint mechanism |
-
2017
- 2017-12-26 CN CN201721851891.7U patent/CN207558722U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110459443A (en) * | 2019-09-09 | 2019-11-15 | 温州东极电气有限公司 | A kind of fast reaction dual-interruption point breaker |
| CN111952130A (en) * | 2020-06-29 | 2020-11-17 | 深圳微羽智能科技有限公司 | Double-breakpoint mechanism |
| CN111952130B (en) * | 2020-06-29 | 2023-10-03 | 深圳微羽智能科技有限公司 | Double breakpoint mechanism |
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| GR01 | Patent grant |