CN206864418U - A kind of high current miniature circuit breaker - Google Patents
A kind of high current miniature circuit breaker Download PDFInfo
- Publication number
- CN206864418U CN206864418U CN201720607624.9U CN201720607624U CN206864418U CN 206864418 U CN206864418 U CN 206864418U CN 201720607624 U CN201720607624 U CN 201720607624U CN 206864418 U CN206864418 U CN 206864418U
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- iron core
- coil
- push rod
- yoke
- binding post
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Abstract
It the utility model is related to a kind of high current miniature circuit breaker,Including housing,Operating mechanism,Electromagnetic system,Arc quenching system,Overcurrent protection mechanism,Contact system,Inlet wire binding post,Outlet binding post,Electromagnetic system includes yoke,The push rod for being movably arranged in yoke and being engaged with the moving contact of contact system,The static iron core being arranged on push rod,The dynamic iron core for being arranged on push rod and being engaged with static iron core,Place is sleeved on the spring on push rod between corresponding static iron core and dynamic iron core,It is sleeved on dynamic iron core and the bobbin outside static iron core,The coil being arranged on bobbin,The number of turn of coil is a circle,One end of coil is connected on terminal plate,The terminal plate is extended in inlet wire binding post,One end bending of yoke towards moving contact extends and formed with static contact,Corresponded on the upper surface of yoke and copper sheet layer is provided with the other end of coil,The other end of coil is connected on copper sheet layer.The utility model has the advantages of stable and reliable for performance, temperature rise is low.
Description
Technical field
The utility model relates to breaker technical field, and in particular to a kind of high current miniature circuit breaker.
Background technology
Miniature circuit breaker be applied to exchange 50/60Hz rated voltage 230/400V, the overload of rated current to 63A circuits and
Short-circuit protection is used, and infrequently operation conversion that can also be under normal circumstances as circuit is used.Be widely used in for industry,
Commercially, the various places such as high-rise and residential houses.Miniature circuit breaker includes housing, operating mechanism, electromagnetic system, overcurrent protection
Mechanism, arc quenching system, contact system, the electromagnetic system design of existing high current miniature circuit breaker is unreasonable, so as to which this is small-sized
Temperature rise, the insecure defect of performance be present in breaker.
The content of the invention
The defects of the purpose of this utility model is to overcome prior art, there is provided it is a kind of it is simple in construction, stable and reliable for performance,
The low high current miniature circuit breaker of temperature rise.
To achieve the above object, the utility model uses a kind of high current miniature circuit breaker, including housing, operating mechanism,
Electromagnetic system, arc quenching system, overcurrent protection mechanism, contact system, inlet wire binding post, outlet binding post, described electricity
Magnetic system include yoke, be movably arranged in yoke and be engaged with the moving contact of contact system push rod, be arranged on push rod
Static iron core, be arranged on push rod and place is sleeved between dynamic iron core, corresponding static iron core and the dynamic iron core that static iron core is engaged
Spring on push rod, dynamic iron core and the bobbin outside static iron core, the coil being arranged on bobbin are sleeved on, the number of turn of coil is
One circle, one end of coil are connected on terminal plate, and the terminal plate is extended in inlet wire binding post, and described yoke is touched towards dynamic
One end bending extension of head and formed with static contact, corresponds on the upper surface of described yoke and is provided with copper at the other end of coil
Lamella, the other end of described coil are connected on copper sheet layer.
The beneficial effect of said structure is：The high current miniature circuit breaker has simple in construction, stable and reliable for performance, temperature rise
The advantages of low.The number of turn of the coil of the electromagnetic system is a circle, while dynamic iron core the suction-combining force is ensured, greatly reduces electricity again
Resistance, advantageously reduces temperature rise, and the copper sheet layer being connected with coil spot welding is provided with yoke, substantially increases electric conductivity, from
And it ensure that the reliability of high current miniature circuit breaker work.
Especially, described overcurrent protection mechanism includes bimetal leaf, the company being connected on the arc striking piece of arc quenching system
The fixed plate being connected on bimetal leaf lower end, the connecting plate being connected in dead plate upper end, the upper end extension of described connecting plate
In outlet binding post, connected respectively by a copper braided wire between described bimetal leaf, connecting plate and moving contact.
Connected respectively by a copper braided wire between the bimetal leaf of the overcurrent protection mechanism, connecting plate and moving contact, work as line
When having high current in road, two copper braided wires can play shunting action, and high current can be avoided to influence the performance of bimetal leaf, from
And it ensure that the stability of the overcurrent protection mechanism overlond trip.
Brief description of the drawings
Fig. 1 is the utility model embodiment cut-away view.
Fig. 2 is the front view of the utility model embodiment electromagnetic system.
Fig. 3 is the sectional view of the utility model embodiment electromagnetic system.
Embodiment
As shown in Figures 1 to 3, the utility model embodiment is a kind of high current miniature circuit breaker, including housing 10, operation machine
Structure 11, electromagnetic system 20, arc quenching system 12, overcurrent protection mechanism 30, contact system 13, inlet wire binding post 14, outlet connect
Line terminals 15.Described electromagnetic system 20 include yoke 21, be movably arranged in yoke 21 and with the moving contact of contact system 13
131 push rods 22 being engaged, the static iron core 23 being arranged on push rod 22, it is arranged on push rod 22 and is engaged with static iron core 23
Place is sleeved on push rod 22 between dynamic iron core 24, corresponding static iron core 23 and dynamic iron core 24 spring 25, be sleeved on dynamic iron core 24 with
Bobbin 26 outside static iron core 23, the coil 27 being arranged on bobbin 26.The number of turn of coil 27 is a circle, the one of coil 27
End is connected on terminal plate 28, and the terminal plate 28 is extended in inlet wire binding post 14, and described yoke 21 is towards moving contact 131
One end bending extension and formed with static contact 132, correspond on the upper surface of described yoke 21 and set at the other end of coil 27
Copper sheet layer 211 is equipped with, the other end of described coil 27 is connected on copper sheet layer 211.Described overcurrent protection mechanism 30 is wrapped
Include the bimetal leaf 31 being connected on the arc striking piece 121 of arc quenching system 12, the fixed plate 32 being connected on the lower end of bimetal leaf 31,
The connecting plate 33 being connected on the upper end of fixed plate 32, the upper end of described connecting plate 33 are extended in outlet binding post 15,
Connected respectively by a copper braided wire 34 between described bimetal leaf 31, connecting plate 33 and moving contact 131.The overcurrent
Connected respectively by a copper braided wire between the bimetal leaf of protection mechanism, connecting plate and moving contact, it is big when having in circuit
During electric current, two copper braided wires can play shunting action, high current can be avoided to influence the performance of bimetal leaf, so as to ensure that
The stability of the overcurrent protection mechanism overlond trip.
The high current miniature circuit breaker has the advantages of simple in construction, stable and reliable for performance, temperature rise is low.The electromagnetic system
The number of turn of coil is a circle, while dynamic iron core the suction-combining force is ensured, greatly reduces resistance again, advantageously reduces temperature rise, and
The copper sheet layer being connected with coil spot welding is provided with yoke, substantially increases electric conductivity, so as to ensure that the high current is small-sized
The reliability of breaker work.
Claims (2)
1. a kind of high current miniature circuit breaker, including housing, operating mechanism, electromagnetic system, arc quenching system, overcurrent protection machine
Structure, contact system, inlet wire binding post, outlet binding post, it is characterised in that：Described electromagnetic system includes yoke, activity
The push rod that is arranged in yoke and is engaged with the moving contact of contact system, the static iron core being arranged on push rod, it is arranged on push rod
Upper and place is sleeved on push rod between dynamic iron core, corresponding static iron core and the dynamic iron core that static iron core is engaged spring, it is sleeved on
Dynamic iron core and the bobbin outside static iron core, the coil being arranged on bobbin, the number of turn of coil is a circle, and one end of coil connects
On terminal plate, the terminal plate is extended in inlet wire binding post, described yoke towards moving contact one end bending extension and
Formed with static contact, corresponded on the upper surface of described yoke and copper sheet layer is provided with the other end of coil, described coil
The other end is connected on copper sheet layer.
2. high current miniature circuit breaker according to claim 1, it is characterised in that：Described overcurrent protection mechanism includes
The bimetal leaf that is connected on the arc striking piece of arc quenching system, the fixed plate being connected on bimetal leaf lower end, it is connected to fixed plate
Connecting plate on upper end, the upper end of described connecting plate are extended in outlet binding post, described bimetal leaf, connecting plate with
Connected respectively by a copper braided wire between moving contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720607624.9U CN206864418U (en) | 2017-05-27 | 2017-05-27 | A kind of high current miniature circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720607624.9U CN206864418U (en) | 2017-05-27 | 2017-05-27 | A kind of high current miniature circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206864418U true CN206864418U (en) | 2018-01-09 |
Family
ID=60825778
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720607624.9U Active CN206864418U (en) | 2017-05-27 | 2017-05-27 | A kind of high current miniature circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206864418U (en) |
-
2017
- 2017-05-27 CN CN201720607624.9U patent/CN206864418U/en active Active
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