CN207818497U - High-breaking miniature breaker - Google Patents
High-breaking miniature breaker Download PDFInfo
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- CN207818497U CN207818497U CN201820223269.XU CN201820223269U CN207818497U CN 207818497 U CN207818497 U CN 207818497U CN 201820223269 U CN201820223269 U CN 201820223269U CN 207818497 U CN207818497 U CN 207818497U
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- arc
- contact
- flap
- striking
- locating shaft
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Abstract
The utility model is related to a kind of high-breaking miniature breakers,Including pedestal,Upper cover,Operating mechanism,Electromagnetic system,Arc quenching system,Contact rack,Moving contact,Static contact,Operating mechanism includes handle,Flap,The tripping being rotatably arranged in the first axle of flap,Be rotatably arranged on the second axis of flap and with the matched lock of tripping,The connecting rod being connected between handle and tripping,Contact rack is rotatably arranged on the locating shaft in pedestal,It is corresponded on the upper surface of contact rack and is provided with limiting slot at locating shaft,Flap is arranged in limiting slot,And one end of flap is rotatably arranged on locating shaft,It is corresponded on the lower face of flap and is provided with buckling groove at locating shaft,Torsional spring is provided in buckling groove,The both ends of torsional spring are installed on flap and contact rack respectively,When the moving contact is in open position,Spacing between moving contact and static contact is 7mm~8mm.The utility model has the advantages that simple in structure, stable and reliable for performance, with long service life.
Description
Technical field
The utility model is specifically related to breaker technical field, and in particular to a kind of high-breaking miniature breaker.
Background technology
Currently, since power grid, industry and family's using terminal protection electric appliance development are swift and violent, miniature circuit breaker is filled as protection
Set and be widely applied in various places electric wiring, it not only can with disjunction with connect normal load current, but also work as line
When the failures such as overload, short circuit occurs in road, circuit, protection equipment, the person and property safety are automatically cut off.Existing miniature circuit breaker
Moving contact and static contact are opened away from 3.5mm~5mm, and opening away from smaller for moving contact and static contact when Short-Circuit High Current occurs, limits
Stream ability is relatively low, and breaking capacity is poor.And existing miniature circuit breaker that there is also arc quenching effects is poor, service life is short, performance not
Stable defect.
Invention content
The purpose of the utility model is to overcome the defect of the prior art, provide it is a kind of it is simple in structure, stable and reliable for performance,
High-breaking miniature breaker with long service life.
To achieve the above object, the utility model uses a kind of high-breaking miniature breaker, including pedestal, upper cover, operation
Mechanism, electromagnetic system, arc quenching system, the contact rack being arranged with operating mechanism linkage, moving contact, the stationary contact being arranged on contact rack
Head, the operating mechanism include handle, flap, the tripping being rotatably arranged in the first axle of flap, are rotatably arranged on flap
The second axis on and with the matched lock of tripping, the connecting rod that is connected between handle and tripping, contact rack rotation sets
It sets on the locating shaft in pedestal, is corresponded on the upper surface of the contact rack and be provided with limiting slot at locating shaft, described turns
Plate is arranged in limiting slot, and one end of flap is rotatably arranged on locating shaft, corresponding positioning on the lower face of the flap
It is provided with buckling groove at axis, torsional spring is provided in buckling groove, the both ends of torsional spring are installed on flap and contact rack respectively, described
When moving contact is in open position, the spacing between moving contact and static contact is 7mm-8mm.
The advantageous effect of above structure is：The miniature circuit breaker is with simple in structure, stable and reliable for performance, service life is long
The advantages of.When closing a floodgate, driving handle, handle drives tripping by connecting rod, after so that tripping is fastened with lock, and with moving contact frame
It is acted by run-on point of locating shaft, after moving contact is contacted with static contact, handle continues to power, after connecting rod crosses arrow point, operation
Mechanism completes to close a floodgate.Using locating shaft as run-on point, the brachium of contact rack can be extended, breaker is moved and touched when in gate-dividing state
The spacing of head and static contact can increase to 7mm-8mm, increase the spacing between moving contact and static contact, breaker is in disjunction
When, electric arc can be promoted to elongate, current limiting capacity improves, and the electric arc generated between moving contact and static contact is rapidly entered because of elongation
To arc-chutes, to make the breaking capacity of breaker greatly improve, breaking capacity is up to 15kA.
Particularly, the arc quenching system includes the arc-chutes being arranged at corresponding static contact in pedestal, is arranged in stationary contact
It is in arc leading angle, the arc striking piece of hook on head-tail, the both sides up and down that static contact is corresponded on the pedestal, upper lid are respectively arranged with
One flash barrier is formed with the striking channel being connected with arc-chutes, the indoor arc extinguishing of the arc extinguishing between two flash barriers
Being corresponded on grid, there is notch, the tail portion of the arc leading angle are extended at arc leading angle in notch, and one end of the arc striking piece is prolonged
It is stretched outside the lower end of arc-chutes, the other end of arc striking piece is connected on bimetal leaf, and the lower section of moving contact tail portion is corresponded on arc striking piece
Place is provided with the striking lug boss in inverted u-shaped, and striking lug boss is tilted towards moving contact direction.The tail portion of arc leading angle extends
In notch on arc-chute, electric arc can be rapidly introduced into arc-chutes by arc leading angle, be conducive to electric arc and quickly extinguished.
Particularly, towards two striking slots are respectively arranged on the side of static contact, two are drawn two flash barriers
Arc slot from extending to arc-chutes direction at the stationary contact of static contact, the spacing between two striking slots from stationary contact to arc-chutes
Direction gradually increases.Flash barrier uses gas exhausted material, electric arc to be blown into arc-chutes soon along striking slot, and electric arc is cooled
And extinguish, arc quenching effect is enhanced, breaking capacity is improved.
Particularly, it is corresponded on two flash barriers and is respectively arranged with a support rim at arc leading angle, respectively supported convex
Platform is contradicted respectively on the bending part of arc leading angle.Support rim plays a supporting role to arc leading angle, static contact.Avoid static contact,
Arc leading angle deforms due to by external force.
Particularly, it is corresponded on the moving contact and is provided with semi-circular groove at the top of movable contact.Moving contact and static contact
When disconnection, semi-circular groove can elongate electric arc, be conducive to extinguishing arc.
Description of the drawings
Fig. 1 is the utility model embodiment exploded view.
Fig. 2 is the utility model embodiment internal structure stereogram.
Fig. 3 is the utility model embodiment internal structure front view.
Specific implementation mode
As shown in Figures 1 to 3, the utility model embodiment is a kind of high-breaking miniature breaker, including pedestal 10, upper cover
11, operating mechanism 20, electromagnetic system 30, arc quenching system 40, the contact rack 50 being arranged with the linkage of operating mechanism 20, setting are in contact
Moving contact 51, static contact 52 on frame 50, the operating mechanism 20 include handle 21, flap 22, are rotatably arranged on flap 22
First axle 221 on tripping 23, be rotatably arranged on the second axis 222 of flap 22 and with tripping 23 it is matched lock 24,
The connecting rod 25 being connected between handle 21 and tripping 23, the contact rack 50 are rotatably arranged on the locating shaft 12 in pedestal 10
On, it is corresponded on the upper surface of the contact rack 50 and is provided with limiting slot 501 at locating shaft 12, the flap 22 setting is limiting
In the slot 501 of position, and one end of flap 22 is rotatably arranged on locating shaft 12, and locating shaft is corresponded on the lower face of the flap 22
It is provided with buckling groove 223 at 12, torsional spring 26 is provided in buckling groove 223, the both ends of torsional spring 26 are installed on flap 22 and touch respectively
On head frame 50, when the moving contact 51 is in open position, the spacing between moving contact 51 and static contact 52 is 7mm-8mm.
It is corresponded on the moving contact 51 and is provided with semi-circular groove 512 at the top of movable contact 511.When moving contact is disconnected with static contact,
Semi-circular groove can elongate electric arc, be conducive to extinguishing arc.
As illustrated in fig. 1 and 2, the arc quenching system 40 includes the arc-chutes being arranged in pedestal 10 at corresponding static contact 52
41, arc leading angle 42, arc striking piece 43 in hook on 52 tail portion of static contact are set, corresponded on the pedestal 10, upper cover 11 quiet
The both sides up and down of contact 52 are respectively set there are one flash barrier 44, are formed between two flash barriers 44 and are connected with arc-chutes 41
Striking channel, corresponding on the arc-chute 411 in the arc-chutes 41 has notch 412, the striking at arc leading angle 42
The tail portion at angle 42 extends in notch 412, and one end of the arc striking piece 43 extends in the lower end of arc-chutes 41, arc striking piece 43
The other end is connected on bimetal leaf 45, is corresponded on arc striking piece 43 and is provided in inverted u-shaped at the lower section of 51 tail portion of moving contact
Striking lug boss 431, and striking lug boss 431 is tilted towards 51 direction of moving contact.The tail portion of arc leading angle extends on arc-chute
Notch in, electric arc can be rapidly introduced into arc-chutes by arc leading angle, be conducive to electric arc and quickly extinguished.Two 44 courts of flash barrier
Be respectively arranged with two striking slots 441 on the side of static contact 52, two striking slots 441 by static contact 52 stationary contact 521
Place extends to 41 direction of arc-chutes, and the spacing between two striking slots 441 to 41 direction of arc-chutes from gradually increasing at stationary contact 521
Greatly.Flash barrier uses gas exhausted material, electric arc to be blown into arc-chutes soon along striking slot, and electric arc is cooled and is extinguished, and increases
Strong arc quenching effect, improves breaking capacity.It is corresponded on two flash barriers 44 and is respectively arranged with one at arc leading angle 42
Support rim 442, each support rim 442 are contradicted respectively on the bending part of arc leading angle 42.Support rim is to arc leading angle, static contact
It plays a supporting role.Static contact, arc leading angle is avoided to be deformed due to by external force.
The miniature circuit breaker has the advantages that simple in structure, stable and reliable for performance, with long service life.When closing a floodgate, push
Handle, handle drive tripping by connecting rod, after so that tripping is fastened with lock, and are rotation crawl with locating shaft with moving contact frame
Make, after moving contact is contacted with static contact, handle continues to power, and after connecting rod crosses arrow point, operating mechanism is completed to close a floodgate.With positioning
Axis is run-on point, can extend the brachium of contact rack, and when in gate-dividing state, the spacing of moving contact and static contact can increase breaker
Greatly to 7mm-8mm, the spacing between moving contact and static contact is increased, breaker can promote electric arc to elongate, current limliting in disjunction
Ability improves, and the electric arc generated between moving contact and static contact is rapidly introduced into arc-chutes because of elongation, to make breaker
Breaking capacity greatly improve, breaking capacity is up to 15kA.
Claims (5)
1. a kind of high-breaking miniature breaker, including pedestal, upper cover, operating mechanism, electromagnetic system, arc quenching system and operation machine
The contact rack of structure linkage setting, moving contact, the static contact being arranged on contact rack, it is characterised in that：The operating mechanism packet
Include handle, flap, the tripping being rotatably arranged in the first axle of flap, be rotatably arranged on the second axis of flap and with tripping phase
The lock of cooperation, the connecting rod being connected between handle and tripping, the contact rack are rotatably arranged on the locating shaft in pedestal,
It is corresponded on the upper surface of the contact rack and is provided with limiting slot at locating shaft, the flap is arranged in limiting slot, and turns
One end of plate is rotatably arranged on locating shaft, is corresponded on the lower face of the flap and is provided with buckling groove at locating shaft, clamping
Torsional spring is provided in slot, the both ends of torsional spring are installed on flap and contact rack respectively, when the moving contact is in open position,
Spacing between moving contact and static contact is 7mm~8mm.
2. high-breaking miniature breaker according to claim 1, it is characterised in that：The arc quenching system includes that correspondence is quiet
Arc-chutes in pedestal are set at contact, arc leading angle, the arc striking piece in hook, the bottom are set on stationary contact head-tail
Seat, the both sides up and down for correspond to static contact on upper lid be respectively set there are one flash barrier, be formed between two flash barriers and arc extinguishing
The striking channel that room is connected, corresponding on the indoor arc-chute of the arc extinguishing has notch, the arc leading angle at arc leading angle
Tail portion extend in notch, one end of the arc striking piece extends in the lower end of arc-chutes, and the other end of arc striking piece is connected to
The striking lug boss being provided at the lower section of moving contact tail portion in inverted u-shaped is corresponded on bimetal leaf, on arc striking piece, and striking is convex
The portion of rising is tilted towards moving contact direction.
3. high-breaking miniature breaker according to claim 2, it is characterised in that：Two flash barriers are towards stationary contact
Be respectively arranged with two striking slots on the side of head, two striking slots from extending to arc-chutes direction at the stationary contact of static contact,
Spacing between two striking slots to arc-chutes direction from gradually increasing at stationary contact.
4. high-breaking miniature breaker according to claim 2 or 3, it is characterised in that：It is right on two flash barriers
It answers and is respectively arranged with a support rim at arc leading angle, each support rim is contradicted respectively on the bending part of arc leading angle.
5. high-breaking miniature breaker according to claim 1, it is characterised in that：Movable contact is corresponded on the moving contact
Top at be provided with semi-circular groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820223269.XU CN207818497U (en) | 2018-02-08 | 2018-02-08 | High-breaking miniature breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820223269.XU CN207818497U (en) | 2018-02-08 | 2018-02-08 | High-breaking miniature breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207818497U true CN207818497U (en) | 2018-09-04 |
Family
ID=63320211
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820223269.XU Active CN207818497U (en) | 2018-02-08 | 2018-02-08 | High-breaking miniature breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207818497U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112151303A (en) * | 2020-09-15 | 2020-12-29 | 南京点坊点电子商务有限公司 | Intelligent manufacturing circuit breaker capable of realizing pre-sensing |
-
2018
- 2018-02-08 CN CN201820223269.XU patent/CN207818497U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112151303A (en) * | 2020-09-15 | 2020-12-29 | 南京点坊点电子商务有限公司 | Intelligent manufacturing circuit breaker capable of realizing pre-sensing |
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