CN208336117U - A kind of breaker of plastic casing - Google Patents
A kind of breaker of plastic casing Download PDFInfo
- Publication number
- CN208336117U CN208336117U CN201821137458.1U CN201821137458U CN208336117U CN 208336117 U CN208336117 U CN 208336117U CN 201821137458 U CN201821137458 U CN 201821137458U CN 208336117 U CN208336117 U CN 208336117U
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- arc
- contact
- chutes
- magnetic sheet
- bending
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Abstract
The utility model relates to a kind of breaker of plastic casing, including pedestal, lid, operating mechanism, contact system, arc quenching system, contact system includes moving contact, static contact, it is corresponded on moving contact and is provided with arc insulating apparatus between the shaft of movable contact and operating mechanism, one end of static contact has the bending restriction in square frame-shaped, arc quenching system includes insulation casing, increase magnetic sheet, first arc-chutes, second arc-chutes, the middle part of insulation casing has the magnetic blow-out chamber being wrapped on the outside of stationary contact, the magnetic blow-out chamber is connected with the inside of the first arc-chutes, the one end for increasing magnetic sheet, which has, is wrapped in stationary contact two sides and U-shaped bending part, the other end for increasing magnetic sheet has the striking foot of upward bending, the both ends of bending part are each passed through bending restriction and are interspersed on the two sides of magnetic blow-out chamber, the tail portion of striking foot passes through magnetic blow-out chamber and extends in the first arc-chutes.The utility model have the advantages that structure it is simple, it is stable and reliable for performance, assemble convenient, long service life, high breaking capacity.
Description
Technical field
The utility model relates to breaker technical fields, and in particular to a kind of breaker of plastic casing.
Background technique
Breaker is the electric current referred to close, carry and cut-off under normal loop condition and can close, when defined
Interior carrying and the switching device for cut-offfing the electric current under abnormal loop condition.Breaker has overload, short circuit and low-voltage protection
Function, can protection circuit and power-supply device long-term existence that is not damaged, while can also cannot detecting to overcurrent protection
The fire hazard that may cause of ground fault protection is provided.Breaker of plastic casing includes plastic shell, operating mechanism, contact system
The structure design of system, arc quenching system, the arc quenching system unreasonable structural design of existing breaker of plastic casing, arc quenching system cannot collect
At modularization, it is not convenient enough to assemble, and causes its arc quenching effect undesirable, contact is easy to be burnt, thus the disjunction energy of breaker
Power is lower.And there is also the defects that structure is complicated, performance is unstable for the plastic housing leakage circuit breakers.
Summary of the invention
The purpose of the utility model is to overcome the defect of the prior art, provide a kind of structure it is simple, it is stable and reliable for performance,
Assemble the breaker of plastic casing of convenient, long service life, high breaking capacity.
To achieve the above object, the utility model uses a kind of breaker of plastic casing, including pedestal, lid, operating mechanism, touching
Head system, arc quenching system, the contact system include with operating mechanism linkage setting moving contact, be arranged in pedestal and with
The static contact that moving contact matches corresponds on moving contact and is provided with arc insulating apparatus between the shaft of movable contact and operating mechanism, and
There is barrier portion of the baffle between shaft and movable contact, one end of the static contact has the folding in square frame-shaped on arc insulating apparatus
Curved restriction is provided with stationary contact in bending restriction, and the other end of the static contact has wiring straight plate part, and described goes out
Arc system includes the insulation casing being fastened in bending restriction, increases magnetic sheet, the first arc-chutes being arranged on insulation casing, sets
The second arc-chutes in the first arc-chutes upper end are set, the middle part of the insulation casing has the magnetic blow-out being wrapped on the outside of stationary contact
Chamber, the magnetic blow-out chamber are connected with the inside of the first arc-chutes, and the one end for increasing magnetic sheet, which has, is wrapped in stationary contact two sides and U-shaped
Bending part, the other end for increasing magnetic sheet have the striking foot of upward bending, and the both ends of bending part are each passed through bending restriction and wear
It is inserted on the two sides of magnetic blow-out chamber, the tail portion of striking foot passes through magnetic blow-out chamber and extends in the first arc-chutes.
The beneficial effect of above structure is: the plastic housing leakage circuit breakers is simple, stable and reliable for performance with structure, assembles just
Victory, long service life, high breaking capacity, advantage small in size.The arc insulating apparatus of insulation arcing has been provided on moving contact,
Arc insulating apparatus can avoid electric arc and scurry into operating mechanism, to improve the reliability of breaker work.The arc extinguishing system of the breaker
System uses double arc extinguishing chambers structure, and the first arc-chutes, the second arc-chutes can allow electric arc to play and jump well, and elongating arc has
The stationary contact setting of cooling, extinguishing conducive to electric arc, static contact is intracavitary in magnetic blow-out, increases magnetic sheet and is wrapped in outside stationary contact, can produce
Raw bigger magnetic field, and bigger magnetic field can be generated, electric arc is blown into arc-chutes, increases and is provided with striking foot on magnetic sheet, is drawn
Arc foot can be oriented to electric arc and shift into arc-chutes, and electric arc can be rapidly introduced into arc-chutes, improve arc extinguishing ability, insulation casing
Using arc blow-out plastic material, on the one hand there is the electric arc that insulate, avoid dynamic/static contact by electric arc calcination, on the other hand can produce
Electric arc is blown into rapidly arc-chutes, enhances arc quenching effect by angry body.There is section to limit in the bending of square frame-shaped type for static contact one end
Flow structure makes the current direction of dynamic/static contact on the contrary, increasing the electronic reprimand between moving contact and static contact when disjunction
Power makes moving contact by reprimand opening force, while static contact section changes, and so that current constriction is generated the power of moving contact movement, has
Conducive to the breaking capacity for improving breaker.
Particularly, second arc-chutes include two flash barriers being fastened on the first arc-chutes, multiple grid, institute
The multiple grid parallel intervals stated are arranged between two flash barriers, are provided with arc leading angle in one of grid, the arc leading angle
Tail portion towards moving contact direction extend.Arc leading angle can elongate electric arc, and electric arc can quickly introduce the first arc-chutes, second
In arc-chutes, the quick extinguishing of electric arc is realized.
Particularly, corresponding increase is provided with limited post at magnetic sheet in the pedestal, increase be provided on the lower end surface of magnetic sheet with
The limit hole that limited post matches, the limited post are interspersed in limit hole and constitute the clamping engagement for increasing magnetic sheet and pedestal.
Detailed description of the invention
Fig. 1 is the utility model embodiment cross-sectional view.
Fig. 2 is the perspective view of the utility model embodiment arc quenching system.
Fig. 3 is the exploded view of the utility model embodiment arc quenching system.
Fig. 4 is the perspective view of the utility model embodiment static contact.
Fig. 5 is the perspective view that the utility model embodiment increases magnetic sheet.
Specific embodiment
As shown in Fig. 1~5, the utility model embodiment is a kind of breaker of plastic casing, including pedestal 10, lid 11, operation
Mechanism 12, contact system 20, arc quenching system 30, the contact system 20 include the moving contact with the linkage setting of operating mechanism 12
21, the static contact 22 for being arranged in pedestal 10 and matching with moving contact 21 corresponds to movable contact 211 and operation machine on moving contact 21
Arc insulating apparatus 23 is provided between the shaft 121 of structure 12, and have on arc insulating apparatus 23 baffle shaft 121 and movable contact 211 it
Between barrier portion 231, one end of the static contact 22 has a bending restriction 221 in square frame-shaped, in bending restriction 221
It is provided with stationary contact 222, the other end of the static contact 22 has wiring straight plate part 223, and the arc quenching system 30 includes
The insulation casing 31 that is fastened in bending restriction 221, increase magnetic sheet 32, the first arc-chutes 33 being arranged on insulation casing 31,
Second arc-chutes 34 of 33 upper end of the first arc-chutes are set, and the middle part of the insulation casing 31, which has, is wrapped in stationary contact
The magnetic blow-out chamber 300 in 222 outsides, the magnetic blow-out chamber 300 are connected with the inside of the first arc-chutes 33, and the one end for increasing magnetic sheet 32 has packet
It is rolled in 222 two sides of stationary contact and U-shaped bending part 321, the other end for increasing magnetic sheet 32 has the striking foot 322 of upward bending,
The both ends of bending part 321 are each passed through bending restriction 221 and are interspersed on the two sides of magnetic blow-out chamber 300, the tail portion of striking foot 322
Across magnetic blow-out chamber 300 and extend in the first arc-chutes 33.Second arc-chutes 34 include being fastened on the first arc-chutes 33
On two flash barriers 341, multiple grid 342, described 342 parallel interval of the multiple grid setting two flash barriers 341 it
Between, it is provided with arc leading angle 343 in one of grid 342, the tail portion of the arc leading angle 343 extends towards 21 direction of moving contact.Draw
Arc angle can elongate electric arc, and electric arc can quickly introduce the first arc-chutes, in the second arc-chutes, realize quickly putting out for electric arc
It goes out.As shown in Fig. 1 or 5, corresponding increase is provided with limited post 101 in the pedestal 10 at magnetic sheet 32, increases the lower end surface of magnetic sheet 32
On be provided with the limit hole 323 matched with limited post 101, the limited post 101, which is interspersed in limit hole 323 and constitutes, to be increased
The clamping engagement of magnetic sheet 32 and pedestal 10.
The plastic housing leakage circuit breakers is simple, stable and reliable for performance with structure, assembles convenient, long service life, high breaking
Ability, advantage small in size.The arc insulating apparatus of insulation arcing is provided on moving contact, arc insulating apparatus can avoid electric arc and scurry into
In operating mechanism, to improve the reliability of breaker work.The arc quenching system of the breaker uses double arc extinguishing chambers structure, the
One arc-chutes, the second arc-chutes can allow electric arc to play and jump well, elongating arc, are conducive to the cooling of electric arc, extinguish, quiet
The stationary contact setting of contact is intracavitary in magnetic blow-out, increases magnetic sheet and is wrapped in outside stationary contact, can generate bigger magnetic field, and can generate
Bigger magnetic field, electric arc is blown into arc-chutes, is increased and is provided with striking foot on magnetic sheet, striking foot can be oriented to electric arc to arc-chutes
Middle transfer, electric arc can be rapidly introduced into arc-chutes, improve arc extinguishing ability, and insulation casing uses arc blow-out plastic material, on the one hand
There is the electric arc that insulate, avoids dynamic/static contact by electric arc calcination, on the other hand can generate gas, electric arc is blown into rapidly and is gone out
Arc chamber enhances arc quenching effect.There is section to make when disjunction in the bending flow restriction of square frame-shaped type for static contact one end
The current direction of dynamic/static contact makes moving contact by reprimand opening force, together on the contrary, increase the electrodynamic repulsion force between moving contact and static contact
When static contact section change, make current constriction generate moving contact movement power, be conducive to improve breaker breaking capacity.
Claims (3)
1. a kind of breaker of plastic casing, including pedestal, lid, operating mechanism, contact system, arc quenching system, it is characterised in that: described
Contact system include and the moving contact of operating mechanism linkage setting, the stationary contact that is arranged in pedestal and is matched with moving contact
Head corresponds on moving contact and is provided with arc insulating apparatus between the shaft of movable contact and operating mechanism, and on arc insulating apparatus there is baffle to exist
Barrier portion between shaft and movable contact, one end of the static contact have the bending restriction in square frame-shaped, bending current limliting
Stationary contact is provided in portion, the other end of the static contact has wiring straight plate part, and the arc quenching system includes being fastened on
Insulation casing, increasing magnetic sheet, the first arc-chutes being arranged on insulation casing, setting in bending restriction is on the first arc-chutes
Second arc-chutes at end, the middle part of the insulation casing have a magnetic blow-out chamber being wrapped on the outside of stationary contact, the magnetic blow-out chamber and the
The inside of one arc-chutes is connected, and the one end for increasing magnetic sheet, which has, is wrapped in stationary contact two sides and U-shaped bending part, increases magnetic sheet
The other end has the striking foot of upward bending, and the both ends of bending part are each passed through bending restriction and are interspersed in the two sides of magnetic blow-out chamber
On, the tail portion of striking foot passes through magnetic blow-out chamber and extends in the first arc-chutes.
2. breaker of plastic casing according to claim 1, it is characterised in that: second arc-chutes include being fastened on first
Two flash barriers on arc-chutes, multiple grid, multiple grid parallel intervals are arranged between two flash barriers, wherein
It is provided with arc leading angle in one grid, the tail portion of the arc leading angle extends towards moving contact direction.
3. breaker of plastic casing according to claim 1, it is characterised in that: corresponding increase is provided at magnetic sheet in the pedestal
Limited post, increases the limit hole for being provided on the lower end surface of magnetic sheet and matching with limited post, and the limited post is interspersed in limit hole
Clamping engagement that is interior and constituting increasing magnetic sheet and pedestal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821137458.1U CN208336117U (en) | 2018-07-18 | 2018-07-18 | A kind of breaker of plastic casing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821137458.1U CN208336117U (en) | 2018-07-18 | 2018-07-18 | A kind of breaker of plastic casing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208336117U true CN208336117U (en) | 2019-01-04 |
Family
ID=64784787
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821137458.1U Active CN208336117U (en) | 2018-07-18 | 2018-07-18 | A kind of breaker of plastic casing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208336117U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112382550A (en) * | 2020-11-30 | 2021-02-19 | 周义才 | Magnetic arc-blowing circuit breaker with double arc-extinguishing chambers |
| CN112885675A (en) * | 2021-03-24 | 2021-06-01 | 西屋低压开关设备(镇江)有限公司 | Modular single-breakpoint contact arc extinguishing device |
| CN114582644A (en) * | 2020-12-02 | 2022-06-03 | 上海良信电器股份有限公司 | Arc control device and circuit breaker |
-
2018
- 2018-07-18 CN CN201821137458.1U patent/CN208336117U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112382550A (en) * | 2020-11-30 | 2021-02-19 | 周义才 | Magnetic arc-blowing circuit breaker with double arc-extinguishing chambers |
| CN114582644A (en) * | 2020-12-02 | 2022-06-03 | 上海良信电器股份有限公司 | Arc control device and circuit breaker |
| CN112885675A (en) * | 2021-03-24 | 2021-06-01 | 西屋低压开关设备(镇江)有限公司 | Modular single-breakpoint contact arc extinguishing device |
| CN112885675B (en) * | 2021-03-24 | 2024-07-05 | 西屋开关设备(江苏)有限公司 | Modularized single-breakpoint contact arc extinguishing device |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 325603 Wenzhou Daqiao Industrial Park, Yueqing City, Wenzhou City, Zhejiang Province Patentee after: Huanyu Hi Tech Co.,Ltd. Address before: 325603 Wenzhou Daqiao Industrial Park, Yueqing City, Wenzhou City, Zhejiang Province Patentee before: HUANYU GROUP ZHEJIANG HIGH-TECH Co.,Ltd. |