CN206331992U - The arc quenching system of miniature circuit breaker - Google Patents
The arc quenching system of miniature circuit breaker Download PDFInfo
- Publication number
- CN206331992U CN206331992U CN201720050424.8U CN201720050424U CN206331992U CN 206331992 U CN206331992 U CN 206331992U CN 201720050424 U CN201720050424 U CN 201720050424U CN 206331992 U CN206331992 U CN 206331992U
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- arc
- flash barrier
- chutes
- circuit breaker
- static contact
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Abstract
The utility model is related to a kind of arc quenching system of miniature circuit breaker, including shell, it is arranged on the arc extinguishing component in shell, shell includes pedestal and upper lid, described arc extinguishing component includes moving contact, static contact, arc-chutes, run-on tab, the upper flash barrier in lid is arranged at the top of correspondence static contact, the lower flash barrier in pedestal is arranged at the lower section of correspondence static contact, being constituted between described upper flash barrier and lower flash barrier has the arc being connected with an arc-chutes chamber, a plurality of convex tendon is provided with the upper surface of described lower flash barrier, a plurality of groove is provided with the lower surface of described upper flash barrier, arc leading angle is provided with described static contact, and the tail end bending of arc leading angle is extended in arc-chutes.The utility model has the advantages that simple in construction, stable and reliable for performance, arc quenching effect is good.
Description
Technical field
The utility model is related to breaker technical field, and in particular to a kind of arc quenching system of miniature circuit breaker.
Background technology
At present, miniature circuit breaker is applied to exchange 50/60Hz rated voltage 230/400V, rated current to 63A circuits
Overload and short-circuit protection are used, and can also be used under normal circumstances as the infrequently operation conversion of circuit.It is widely used in use
In various places such as industry, business, high-rise and residential houses.In use, the moving contact and static contact of miniature circuit breaker
Between can produce electric arc so that miniature circuit breaker need carry out arc extinguishing design, it is to avoid the electric arc of generation cause circuit continue turn on；
However, there is complex structure, the defect of arc quenching effect difference in the arc quenching system of existing miniature circuit breaker, so that the miniature circuit breaker
Have that breaking capacity is weaker, the insecure defect of performance.
The content of the invention
The purpose of this utility model be overcome the defect of prior art there is provided one kind it is simple in construction, stable and reliable for performance,
The arc quenching system of the good miniature circuit breaker of arc quenching effect.
To achieve the above object, the utility model uses a kind of arc quenching system of miniature circuit breaker, including shell, is arranged on
Arc extinguishing component in shell, shell includes pedestal and upper lid, and described arc extinguishing component includes moving contact, static contact, arc-chutes, right
Answer the run-on tab being arranged at moving contact in pedestal, upper flash barrier in lid, correspondingly is arranged at the top of correspondence static contact
The lower flash barrier in pedestal is arranged at the lower section of static contact, between described upper flash barrier and lower flash barrier constitute have one with
It is provided with a plurality of convex tendon on the arc chamber that arc-chutes are connected, the upper surface of described lower flash barrier, described upper flash barrier
It is provided with lower surface on a plurality of groove, described static contact and is provided with arc leading angle, and the tail end bending of arc leading angle is extended to and gone out
In arc chamber.
The beneficial effect of said structure is：Two flash barriers are provided with the arc quenching system of the miniature circuit breaker, are touched when dynamic
When producing electric arc between head and static contact, the arc chamber between two flash barriers can quickly suck electric arc arc-chutes, electric arc quilt
Quick cooling, reach it is quick extinguish the purpose of electric arc, and be provided with lower flash barrier on convex tendon, upper flash barrier and set fluted,
So as to increase the film-cooled heat of electric arc, decline the electric field of arc gap, accelerate medium recovery strength, play quick extinguishing electric arc
Effect, so as to improve the breaking capacity of miniature circuit breaker；And static contact is provided with the arc leading angle that can introduce electric arc in arc-chutes,
And the electric arc on moving contact can be rapidly introduced into arc-chutes by run-on tab, so as to improve the arc quenching effect of the arc quenching system.
Especially, described a plurality of convex tendon parallel interval distribution, and each convex tendon is from the side of moving contact towards arc-chutes side
To extension, described a plurality of groove parallel interval distribution, and each groove extend from the side of moving contact towards arc-chutes direction.Under
Multiple convex tendons on flash barrier can play guide effect to electric arc, and electric arc can be rapidly introduced into arc-chutes, enhancing electric arc
Magnetic blow-out effect, realizes the quick purpose for extinguishing electric arc.
Especially, it is provided with described lower flash barrier in two positioning holes, described pedestal at two positioning holes of correspondence
A locating dowel being adapted is respectively arranged with, two described positioning holes are set in corresponding locating dowel and constituted
The clamping of lower flash barrier and pedestal.Lower flash barrier is connected with pedestal by the way of clamping, consequently facilitating lower flash barrier and pedestal
Assembling.
Especially, it is provided with described upper flash barrier in two mounting holes, described upper lid at two mounting holes of correspondence
A locating shaft being adapted is respectively arranged with, two described mounting holes are set on corresponding locating shaft and constituted
The clamping of upper flash barrier and upper lid.Upper flash barrier is connected with upper lid by the way of clamping, consequently facilitating upper flash barrier and upper lid
Assembling.
Brief description of the drawings
Fig. 1 is the front view of the utility model miniature circuit breaker.
Fig. 2 is A-A sectional views in Fig. 1.
Fig. 3 is the utility model miniature circuit breaker cut-away view.
Fig. 4 is the assembling figure of flash barrier and upper lid on the utility model.
Fig. 5 is the stereogram of flash barrier under the utility model.
Fig. 6 is the stereogram of flash barrier on the utility model.
Embodiment
As shown in figs. 1 to 6, the utility model embodiment is a kind of arc quenching system of miniature circuit breaker, including shell 100,
The arc extinguishing component 20 in shell is arranged on, shell 100 includes pedestal 10 and upper lid 11, and described arc extinguishing component 20 includes moving contact
21st, static contact 22, arc-chutes 23, be arranged at correspondence moving contact 21 run-on tab 24 in pedestal 10, correspondence static contact 22 it is upper
The lower flash barrier in pedestal 10 is arranged at upper flash barrier 27 that square place is arranged in lid 11, the lower section of correspondence static contact 22
26, being constituted between described upper flash barrier 27 and lower flash barrier 26 has an arc chamber 200 being connected with arc-chutes 23, described
Lower flash barrier 26 upper surface on be provided with a plurality of convex tendon 261, be provided with the lower surface of described upper flash barrier 27 a plurality of
Arc leading angle 221 is provided with groove 271, described static contact 22, and the tail end bending of arc leading angle 221 extends to arc-chutes 23
It is interior.
As shown in Fig. 3,5,6, the described parallel interval of a plurality of convex tendon 261 distribution, and each convex tendon 261 is from the one of moving contact 22
Side extends towards the direction of arc-chutes 23, the described parallel interval of a plurality of groove 271 distribution, and each groove 271 is from moving contact 22
Side extends towards the direction of arc-chutes 23.Multiple convex tendons on lower flash barrier can play guide effect to electric arc, can be fast by electric arc
Speed is incorporated into arc-chutes, strengthens the magnetic blow-out effect of electric arc, realizes the quick purpose for extinguishing electric arc.
As shown in Fig. 3,5, correspondence in two positioning holes 262, described pedestal 10 is provided with described lower flash barrier 26
A locating dowel being adapted 101 is respectively arranged with two positioning holes 262, two described positioning holes 206 are set in
In corresponding locating dowel 101 and constitute the clamping of lower flash barrier 26 and pedestal 10.Lower flash barrier uses the side of clamping with pedestal
Formula is connected, consequently facilitating the assembling of lower flash barrier and pedestal.
As shown in Fig. 4,6, correspondence in two mounting holes 272, described upper lid 11 is provided with described upper flash barrier 27
A locating shaft being adapted 111 is respectively arranged with two mounting holes 272, two described mounting holes 272 are set in
On corresponding locating shaft 111 and constitute the clamping of upper flash barrier 27 and upper lid 11.Upper flash barrier and side of the upper lid using clamping
Formula is connected, consequently facilitating the assembling of upper flash barrier and upper lid.
Claims (4)
1. a kind of arc quenching system of miniature circuit breaker, including shell, the arc extinguishing component that is arranged in shell, shell include pedestal with
Upper lid, it is characterised in that：Described arc extinguishing component include moving contact, static contact, arc-chutes, run-on tab, correspondence static contact it is upper
The lower flash barrier in pedestal is arranged at upper flash barrier that square place is arranged in lid, the lower section of correspondence static contact, described is upper
Being constituted between flash barrier and lower flash barrier has the arc being connected with an arc-chutes chamber, on the upper surface of described lower flash barrier
It is provided with a plurality of convex tendon, is provided with to be provided with a plurality of groove, described static contact on the lower surface of described upper flash barrier and draws
Arc angle, and the tail end bending of arc leading angle extended in arc-chutes.
2. the arc quenching system of miniature circuit breaker according to claim 1, it is characterised in that：Parallel of described a plurality of convex tendon
Every distribution, and each convex tendon, from the side of moving contact towards the extension of arc-chutes direction, described a plurality of groove parallel interval is distributed, and
Each groove extends from the side of moving contact towards arc-chutes direction.
3. the arc quenching system of miniature circuit breaker according to claim 1, it is characterised in that：Set on described lower flash barrier
Have in two positioning holes, described pedestal and be respectively arranged with a locating dowel being adapted at two positioning holes of correspondence, it is described
Two positioning holes are set in corresponding locating dowel and constitute the clamping of lower flash barrier and pedestal.
4. the arc quenching system of miniature circuit breaker according to claim 1, it is characterised in that：Set on described upper flash barrier
Have in two mounting holes, described upper lid and be respectively arranged with a locating shaft being adapted at two mounting holes of correspondence, it is described
Two mounting holes are set on corresponding locating shaft and constitute the clamping of upper flash barrier and upper lid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720050424.8U CN206331992U (en) | 2017-01-17 | 2017-01-17 | The arc quenching system of miniature circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720050424.8U CN206331992U (en) | 2017-01-17 | 2017-01-17 | The arc quenching system of miniature circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206331992U true CN206331992U (en) | 2017-07-14 |
Family
ID=59294194
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720050424.8U Active CN206331992U (en) | 2017-01-17 | 2017-01-17 | The arc quenching system of miniature circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206331992U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109192631A (en) * | 2018-10-12 | 2019-01-11 | 上海永继电气股份有限公司 | Arc extinguishing system of circuit breaker and breaker |
-
2017
- 2017-01-17 CN CN201720050424.8U patent/CN206331992U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109192631A (en) * | 2018-10-12 | 2019-01-11 | 上海永继电气股份有限公司 | Arc extinguishing system of circuit breaker and breaker |
| CN109192631B (en) * | 2018-10-12 | 2024-04-16 | 上海永继电气股份有限公司 | Arc extinguishing system of circuit breaker and circuit breaker |
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