CN208336122U - A kind of miniaturization plastic housing leakage circuit breakers - Google Patents
A kind of miniaturization plastic housing leakage circuit breakers Download PDFInfo
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- CN208336122U CN208336122U CN201821137393.0U CN201821137393U CN208336122U CN 208336122 U CN208336122 U CN 208336122U CN 201821137393 U CN201821137393 U CN 201821137393U CN 208336122 U CN208336122 U CN 208336122U
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- arc
- contact
- rocking bar
- instruction
- magnetic sheet
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Abstract
The utility model relates to a kind of miniaturization plastic housing leakage circuit breakers, including pedestal, middle cover, upper cover, operating mechanism, divide-shut brake instruction state 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 U-shaped restriction, stationary contact is provided in the U-shaped restriction, the other end of static contact has wiring straight plate part, arc quenching system includes insulation casing, arc-chutes, increase magnetic sheet, increase magnetic sheet and corresponds to the flange for being respectively provided with a upward bending at the two sides of stationary contact, the magnetic blow-out chamber for being wrapped in stationary contact two sides is formed between two flange, the through-hole passed through for stationary contact is provided on insulation casing, the one end for increasing magnetic sheet has striking foot, the striking foot passes through through-hole and extends in arc-chutes, this 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 miniaturization plastic housing leakage circuit breakers.
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 the arc quenching effect of the arc quenching system is undesirable, and contact is easy to be burnt, thus breaker
Breaking capacity it is lower.And there is also structure is complicated, performance is unstable, divide-shut brake instruction is not known for the plastic housing leakage circuit breakers
Defect.
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 convenient, long service life, the miniaturization plastic housing leakage circuit breakers of high breaking capacity.
To achieve the above object, the utility model use a kind of miniaturization plastic housing leakage circuit breakers, including pedestal, middle cover,
Upper cover, operating mechanism, the divide-shut brake instruction state mechanism being arranged in middle cover, contact system, arc quenching system, the contact system
System include with the moving contact of operating mechanism linkage setting, the static contact that is arranged in pedestal and is matched with moving contact, it is described
It being corresponded on moving contact and is provided with arc insulating apparatus between the shaft of movable contact and operating mechanism, the cross sectional shape of arc insulating apparatus is U-shaped, and
Through rivet on moving contact, one end of the static contact has U-shaped restriction, sets in the U-shaped restriction arc insulating apparatus
It is equipped with stationary contact, the other end of static contact has wiring straight plate part, and the arc quenching system includes the cover in U-shaped restriction
Arc-chutes on insulation casing of insulation casing, the cover, the increasing magnetic sheet being interspersed in U-shaped restriction, the increasing magnetic sheet are corresponding
It is respectively provided with the flange of a upward bending at the two sides of stationary contact, is formed between two flange and is wrapped in stationary contact two sides
Magnetic blow-out chamber, the through-hole passed through for stationary contact is provided on the insulation casing, and one end of the increasing magnetic sheet has striking
Foot, the striking foot pass through through-hole and extend in arc-chutes, are provided with bending part, arc extinguishing on the tail portion of the U-shaped restriction
The arc leading angle for being provided at U-shaped restriction and matching with bending part, and one end court of arc leading angle are corresponded on indoor arc extinguishing grid pieces
Extend to the bending part of U-shaped restriction.
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.Two flange of the increasing magnetic sheet of the arc quenching system are wrapped in sound
Contact, it is intracavitary that the stationary contact of static contact is located at magnetic blow-out, and so as to generate bigger magnetic field, electric arc is blown into arc-chutes, increases
Striking foot is provided on magnetic sheet, striking foot can be oriented to electric arc and shift into arc-chutes, and electric arc can be rapidly introduced into arc-chutes,
Arc extinguishing ability is improved, insulation casing uses arc blow-out plastic material, on the one hand plays the role of the electric arc that insulate, avoids moving contact, stationary contact
On the other hand head can generate gas by electric arc calcination, electric arc is blown into rapidly arc-chutes, enhances arc quenching effect.Static contact one
The U-shaped flow restriction for having section U-shaped is held, when disjunction, makes the current direction of dynamic/static contact on the contrary, increasing moving contact
Electrodynamic repulsion force between static contact makes moving contact by reprimand opening force, while static contact section changes, and produces current constriction
Cephalomotor power is vividly touched, is conducive to the breaking capacity for improving breaker, and arc quenching system uses modularized design, structure is tight
It gathers, it is small in size, convenient for arc quenching system assembly in pedestal, is improved assembly efficiency.Insulated electro has been provided on moving contact
The arc insulating apparatus of arc effect, arc insulating apparatus can avoid electric arc and scurry into operating mechanism, to improve the reliability of breaker work.
Particularly, the divide-shut brake instruction state mechanism includes the bracket being arranged in middle cover, is rotatably arranged on bracket
On instruction rocking bar, be provided with mounting groove on the bracket, pin shaft, the middle part of the instruction rocking bar be provided in mounting groove
It is rotatably arranged on pin shaft, torsional spring is set on pin shaft, the both ends of the torsional spring are contradicted respectively on bracket, instruction rocking bar, described
Bracket on be provided with microswitch with circuit board electrical connection, correspond to have at microswitch on the instruction rocking bar and stir
Piece, sliding piece act with instruction rocking bar and can stir the contact of microswitch, and the upper end of the instruction rocking bar is provided with arc
Indicating piece corresponds on the upper surface of arc indicating piece and is respectively arranged with separating brake mark at the indicator hole of upper cover and the mark that closes a floodgate, institute
The lower end for the instruction rocking bar stated passes through middle cover and contradicts in the shaft of operating mechanism.The bracket of the divide-shut brake instruction state mechanism
On be provided with microswitch, the microswitch for circuit board sampling use, mechanical sampling structure is constituted, to realize open circuit
Device divide-shut brake instruction accurately purpose, the divide-shut brake instruction state mechanism at work, when breaker open operation, the shaft of breaker
Separating brake movement is executed, shaft pushes instruction rocking bar rotation, and indicates that the sliding piece on rocking bar stirs the contact of microswitch, circuit
Plate can receive sub-gate signal, and user can see the separating brake mark on arc indicating piece on the upper lid of breaker, thus real
The now separating brake instruction of the divide-shut brake instruction state mechanism；For short-circuiting device when closing a floodgate, the shaft of breaker executes feed motion, instruction
Rocking bar loses the limitation of shaft, is restored to original position, and circuit board can receive switching signal, and user can be in the upper lid of breaker
Combined floodgate mark on to arc indicating piece, to realize the combined floodgate instruction of the divide-shut brake instruction state mechanism.
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 divide-shut brake instruction state mechanism.
Fig. 5 is the perspective view of the utility model embodiment insulation the cover.
Fig. 6 is the perspective view that the utility model embodiment increases magnetic sheet.
Fig. 7 is the perspective view of the utility model embodiment arc insulating apparatus.
Specific embodiment
As shown in Fig. 1~7, the utility model embodiment is a kind of miniaturization plastic housing leakage circuit breakers, including pedestal 10, in
Lid 11, upper cover 12, operating mechanism 13, divide-shut brake instruction state mechanism 20, contact system 30, the arc extinguishing system being arranged in middle cover 11
System 40, the contact system 30 include with the moving contact 31 of the linkage setting of operating mechanism 13, be arranged in pedestal 10 and with it is dynamic
The static contact 32 that contact 31 matches corresponds between movable contact 311 and the shaft 131 of operating mechanism 13 on the moving contact 31
Place is provided with arc insulating apparatus 33, and the cross sectional shape of arc insulating apparatus 33 is U-shaped, and arc insulating apparatus 33 is riveted on moving contact 31 by rivet 34
On.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, thus
Improve the reliability of breaker work.One end of the static contact 32 has U-shaped restriction 321, the U-shaped restriction 321
On be provided with stationary contact 322, the other end of static contact 32 has wiring straight plate part 323, and the arc quenching system 40 includes the cover
Arc-chutes 42 on insulation casing 41 of insulation casing 41, the cover in U-shaped restriction 321 are interspersed in U-shaped restriction 321
Interior increasing magnetic sheet 43 is respectively provided with the flange of a upward bending at the two sides of the corresponding stationary contact 322 of the increasing magnetic sheet 43
431, the magnetic blow-out chamber 400 for being wrapped in 322 two sides of stationary contact is formed between two flange 431, is set on the insulation casing 41
It is equipped with the through-hole 411 passed through for stationary contact 322, one end of the increasing magnetic sheet 43 has striking foot 432, the striking foot 432
It across through-hole 411 and extends in arc-chutes 42, is provided with bending part 324, arc extinguishing on the tail portion of the U-shaped restriction 321
The arc leading angle 422 for being provided at U-shaped restriction 321 and matching with bending part 324 is corresponded on arc extinguishing grid pieces 421 in room 42, and
The bending part 324 of one end of arc leading angle 422 towards U-shaped restriction 321 extends.
As shown in Fig. 1,4, the divide-shut brake instruction state mechanism 20 includes the bracket 21 being arranged in middle cover 11, rotation
Instruction rocking bar 22 on the stent 21 is set, mounting groove 211 is provided on the bracket 21, is provided with pin in mounting groove 211
The middle part of axis 23, the instruction rocking bar 22 is rotatably arranged on pin shaft 23, and torsional spring 24 is set on pin shaft 23, the torsional spring 24
Both ends are contradicted respectively on bracket 21, instruction rocking bar 22, and the fine motion being provided on the bracket 21 with circuit board electrical connection is opened
25 are closed, corresponding on the instruction rocking bar 22 has sliding piece 221 at microswitch 25, sliding piece 221 is dynamic with instruction rocking bar 22
Make and can stir the contact 251 of microswitch 25, the upper end of the instruction rocking bar 22 is provided with arc indicating piece 222, arc
It is corresponded on the upper surface of indicating piece 222 and is respectively arranged with separating brake mark 223 and combined floodgate mark 224 at the indicator hole 121 of upper cover 12,
The lower end of the instruction rocking bar 22 passes through middle cover 11 and contradicts in the shaft 131 of operating mechanism 13.The divide-shut brake indicates shape
It is provided with microswitch on the bracket of state mechanism, which uses for circuit board sampling, mechanical sampling structure is constituted,
To realize circuit-breaker switching on-off instruction accurately purpose, the divide-shut brake instruction state mechanism at work, when breaker open operation,
The shaft of breaker executes separating brake movement, and shaft pushes instruction rocking bar rotation, and indicates that the sliding piece on rocking bar is stirred fine motion and opened
The contact of pass, circuit board can receive sub-gate signal, and user can see point on arc indicating piece on the upper lid of breaker
Lock mark, to realize the separating brake instruction of the divide-shut brake instruction state mechanism；When closing a floodgate, the shaft of breaker executes short-circuiting device
Feed motion, instruction rocking bar lose the limitation of shaft, are restored to original position, and circuit board can receive switching signal, and user can be disconnected
The combined floodgate mark on arc indicating piece is seen on the upper lid of road device, to realize that the combined floodgate of the divide-shut brake instruction state mechanism refers to
Show.
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.Two flange of the increasing magnetic sheet of the arc quenching system are wrapped in dynamic/static contact, the stationary contact point of static contact
It is intracavitary in magnetic blow-out, so as to generate bigger magnetic field, electric arc is blown into arc-chutes, increases and is provided with striking foot on magnetic sheet, draw
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, avoids moving contact, static contact by electric arc calcination, on the other hand
Gas can be generated, electric arc is blown into rapidly arc-chutes, enhances arc quenching effect.The U-shaped limit that static contact one end has section U-shaped
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, and arc quenching system uses modularized design, convenient for assembling arc quenching system in pedestal,
Improve assembly efficiency.
Claims (2)
1. a kind of miniaturization plastic housing leakage circuit breakers, including pedestal, middle cover, upper cover, operating mechanism, the division being arranged in middle cover
Lock instruction state mechanism, contact system, arc quenching system, it is characterised in that: the contact system includes linking with operating mechanism
The moving contact of setting, the static contact for being arranged in pedestal and being matched with moving contact, correspond on the moving contact movable contact with
Arc insulating apparatus is provided between the shaft of operating mechanism, the cross sectional shape of arc insulating apparatus is U-shaped, and arc insulating apparatus is existed by rivet
On moving contact, one end of the static contact has U-shaped restriction, is provided with stationary contact in the U-shaped restriction, static contact it is another
One end has wiring straight plate part, and the arc quenching system includes insulation casing of the cover in U-shaped restriction, the cover in insulating boot
Arc-chutes on shell, the increasing magnetic sheet being interspersed in U-shaped restriction, the increasing magnetic sheet corresponds to be respectively provided at the two sides of stationary contact
The flange of one upward bending is formed with the magnetic blow-out chamber for being wrapped in stationary contact two sides, the insulation casing between two flange
On be provided with the through-hole passed through for stationary contact, one end of the increasing magnetic sheet has a striking foot, the striking foot pass through through-hole and
It extends in arc-chutes, bending part is provided on the tail portion of the U-shaped restriction, corresponds to U on the indoor arc extinguishing grid pieces of arc extinguishing
The arc leading angle matched with bending part is provided at type restriction, and the bending part of one end of arc leading angle towards U-shaped restriction prolongs
It stretches.
2. miniaturization plastic housing leakage circuit breakers according to claim 1, it is characterised in that: the divide-shut brake instruction state
Mechanism includes the bracket being arranged in middle cover, the instruction rocking bar being rotatably arranged on bracket, is provided with installation on the bracket
Slot is provided with pin shaft in mounting groove, is rotatably arranged on pin shaft in the middle part of the instruction rocking bar, torsional spring is set on pin shaft,
The both ends of the torsional spring are contradicted respectively on bracket, instruction rocking bar, and the fine motion with circuit board electrical connection is provided on the bracket
It switchs, corresponding on the instruction rocking bar has sliding piece at microswitch, sliding piece is with the movement of instruction rocking bar and can stir micro-
The contact of dynamic switch, the upper end of the instruction rocking bar are provided with arc indicating piece, correspond on the upper surface of arc indicating piece
Separating brake mark is respectively arranged at the indicator hole of lid and the mark that closes a floodgate, the lower end of the instruction rocking bar passes through middle cover and contradicts
In the shaft of operating mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821137393.0U CN208336122U (en) | 2018-07-18 | 2018-07-18 | A kind of miniaturization plastic housing leakage circuit breakers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821137393.0U CN208336122U (en) | 2018-07-18 | 2018-07-18 | A kind of miniaturization plastic housing leakage circuit breakers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208336122U true CN208336122U (en) | 2019-01-04 |
Family
ID=64784789
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821137393.0U Active CN208336122U (en) | 2018-07-18 | 2018-07-18 | A kind of miniaturization plastic housing leakage circuit breakers |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208336122U (en) |
-
2018
- 2018-07-18 CN CN201821137393.0U patent/CN208336122U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| 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. |