CN206877954U - A kind of high breaking circuit breaker without arc - Google Patents
A kind of high breaking circuit breaker without arc Download PDFInfo
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- CN206877954U CN206877954U CN201720814523.9U CN201720814523U CN206877954U CN 206877954 U CN206877954 U CN 206877954U CN 201720814523 U CN201720814523 U CN 201720814523U CN 206877954 U CN206877954 U CN 206877954U
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Abstract
The utility model discloses a kind of high breaking circuit breaker without arc, tripping coil, tripping mechanism, dynamic contact mechanism, static contact mechanism and extinguishing arc mechanism including housing and in housing, elastic movable contact is provided between the moving contact of the dynamic contact mechanism and the static contact of static contact mechanism, described elastic movable contact one end and the moving contact Intermittent Contact of dynamic contact mechanism, the elastic movable contact other end are connected with extinguishing arc mechanism；The extinguishing arc mechanism includes some pieces of phosphor-copper clamping plates, a PTC-element is provided between every two pieces of phosphor-copper clamping plates, the both ends of the phosphor-copper clamping plate are provided with metallic conduction plate, make the PTC-element serial or parallel connection between some pieces of phosphor-copper clamping plates by metallic conduction plate, and metallic conduction plate one end and elastic movable contact Elastic Contact, the static contact Elastic Contact of the metallic conduction plate other end and static contact mechanism.Above-mentioned technical proposal, reasonable in design, simple in construction, easy to manufacture, dependable performance, production cost are low and practicality is good.
Description
Technical field
It the utility model is related to breaker technical field, and in particular to a kind of high breaking circuit breaker without arc.
Background technology
For miniature circuit breaker (MCB) as the terminal control device of low-voltage power network, dosage is very big.As the product
The breaking capacity of one of important performance determines the reliability of product.At present, the disjunction of such product of domestic production producer displaying
Ability is general all in 6KA or so.Miniature circuit breaker (MCB) breaking capacity how is improved, is always lot of domestic and foreign scientific research machine
The important topic of structure research.
For example, the Chinese patent of application in 2016, applicant：Xi'an Communications University, number of patent application are：
201610993329.1 patent name is《One kind is without arc dc circuit breaker and its application method》It is special with the China of application in 2013
Profit, applicant：Institute of State Grid Intelligent Electric Grids, number of patent application are：It is 201310018003.3 entitled《One kind seals in electric capacity
Formula high voltage DC breaker and its control method》, above-mentioned two technical scheme can realize the thick-less vane of breaker in theory
To improve the breaking capacity of breaker, but because the mechanism structure of its design is complicated and by miniature circuit breaker inner space
The reason such as limitation, make trouble, production cost is high, is hardly formed product and popularization, poor practicability.
Utility model content
In view of the deficienciess of the prior art, the purpose of this utility model is to provide a kind of reasonable in design, structure
Simply, the high breaking circuit breaker without arc that easy to manufacture, dependable performance, production cost are low and practicality is good.
To achieve the above object, the utility model provides following technical scheme：A kind of high breaking circuit breaker without arc, including
Housing and tripping coil, tripping mechanism, dynamic contact mechanism, static contact mechanism and extinguishing arc mechanism in housing, it is described dynamic
Elastic movable contact, the elastic movable contact one are provided between the moving contact of contact mechanism and the static contact of static contact mechanism
End and the moving contact Intermittent Contact of dynamic contact mechanism, the elastic movable contact other end are connected with extinguishing arc mechanism；The extinguishing arc mechanism
Including some pieces of phosphor-copper clamping plates, a PTC-element is provided between every two pieces of phosphor-copper clamping plates, the both ends of the phosphor-copper clamping plate are all provided with
Metallic conduction plate is equipped with, the PTC-element serial or parallel connection between some pieces of phosphor-copper clamping plates is made by metallic conduction plate, and metal is led
The static contact Elastic Contact of electroplax one end and elastic movable contact Elastic Contact, the metallic conduction plate other end and static contact mechanism.
By using above-mentioned technical proposal, the PTC-element between some pieces of phosphor-copper clamping plates is set to connect by metallic conduction plate
Or it is in parallel to adapt to the needs of properties of product, and radiated to PTC-element；The PTC-element is conductive polymer PTC element；Should
Conductive polymer PTC element is in usual, resistance very little, typically several ohm to tens ohm.When passing through Short-Circuit High Current, moment
Resistance exponentially becomes big, and the short circuit current bigger reaction time is shorter, can clamp down on short circuit current 50KA in 0.5ms
Below 1KA.Reasonable in design, simple in construction, easy to manufacture, dependable performance, production cost are low and practicality is good.
The utility model is further arranged to：The elastic movable contact is made up of phosphor-copper strip material.Pass through this setting, bullet
Sexuality contact is easily manufactured, reliable operation.
The utility model is further arranged to：The interval of some pieces of phosphor-copper clamping plate riding positions is identical, and some blocks of phosphorus
Parallel to each other between copper clamping plate, being riveted outside some pieces of phosphor-copper clamping plates has insulation fixing plate.By this setting, extinguishing arc mechanism structure is set
Put more rationally, reliable operation.
The utility model is further arranged to：The elastic movable contact has been wholely set close to extinguishing arc mechanism end to arch upward
Extinguishing arc mechanism tie point.By this setting, yielding movable moving contact structure sets more reasonable, reliable operation.
The utility model is further arranged to：The housing is plastic casing, and the double golden machines of overload are additionally provided with housing
Structure, handle and binding post.By this setting, structure setting is more reasonable, reliable operation.
The utility model has the advantages that：Compared with prior art, the utility model structure setting is more reasonable, passes through metal
Conductive plate makes the PTC-element serial or parallel connection between some pieces of phosphor-copper clamping plates to adapt to the needs of properties of product, and gives PTC-element
Radiating；The PTC-element is conductive polymer PTC element；The conductive polymer PTC element is general several in usual, resistance very little
Ohm is to tens ohm.When passing through Short-Circuit High Current, moment resistance exponentially becomes big, and the short circuit current bigger reaction time
It is shorter, short circuit current 50KA can be clamped down in below 1KA in 0.5ms.Reasonable in design, simple in construction, easy to manufacture,
Dependable performance, production cost are low and practicality is good.
With reference to Figure of description and specific embodiment, the utility model is described in further detail.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model embodiment；
Fig. 2 is the enlarged diagram in I portions in Fig. 1；
Fig. 3 is the utility model embodiment extinguishing arc mechanism partial schematic sectional view；
Fig. 4 is the performance diagram of the utility model embodiment PTC-element；
Fig. 5 is the structural representation one of the utility model embodiment "on" position；
Fig. 6 is Fig. 5 circuit diagram；
Fig. 7 is the structural representation two of the utility model embodiment "on" position；
Fig. 8 is Fig. 7 circuit diagram；
Fig. 9 is the structural representation three of the utility model embodiment "on" position；
Figure 10 is Fig. 9 circuit diagram；
Figure 11 is the structural representation one of the utility model embodiment tripped condition；
Figure 12 is Figure 11 circuit diagram；
Figure 13 is the structural representation two of the utility model embodiment tripped condition；
Figure 14 is Figure 13 circuit diagram；
Figure 15 is the structural representation three of the utility model embodiment tripped condition；
Figure 16 is Figure 15 circuit diagram.
Embodiment
Referring to Fig. 1 to 16, a kind of high breaking circuit breaker without arc disclosed in the utility model, including housing 1 and installed in shell
Tripping coil 2, tripping mechanism 3, dynamic contact mechanism 4, static contact mechanism 5 and extinguishing arc mechanism 6 in body 1, the dynamic contact mechanism 4
Moving contact 41 and static contact mechanism 5 static contact 51 between be provided with elastic movable contact 7, the elastic movable contact 7 one
End and the Intermittent Contact of moving contact 41 of dynamic contact mechanism 4, the elastic other end of movable contact 7 are connected with extinguishing arc mechanism 6；The extinguishing arc
Mechanism 6 includes some pieces of phosphor-copper clamping plates 61, and a PTC-element 62, the phosphor-copper folder are provided between every two pieces of phosphor-copper clamping plates 61
The both ends of plate 61 are provided with metallic conduction plate 63, and the PTC members between some pieces of phosphor-copper clamping plates 61 are made by metallic conduction plate 63
The serial or parallel connection of part 62, and the one end of metallic conduction plate 63 and the elastic Elastic Contact of movable contact 7, the other end of metallic conduction plate 63 with
The Elastic Contact of static contact 51 of static contact mechanism 5.
As preferable, the tripping coil 2, tripping mechanism 3, dynamic contact mechanism 4, static contact mechanism 5 and extinguishing arc mechanism 6
It is connected respectively by the internal face of existing screw and housing 1, and the PTC-element 62 is conductive polymer PTC element.
The conductive polymer PTC element is existing product, and conductive polymer PTC element is in usual, resistance very little, and general several ohm to several
Ten ohm.When passing through Short-Circuit High Current, moment resistance exponentially becomes big, and the short circuit current bigger reaction time is shorter, can
So that short circuit current 50KA is clamped down in below 1KA in 0.5ms.The resistance-temperature characteristics curve map of PTC-element is as shown in Figure 4.
The elastic movable contact 7 is made up of phosphor-copper strip material.One end of the elastic movable contact 7 and dynamic contact mechanism 4
Moving contact 41 during combined floodgate or tripping operation Intermittent Contact, then the body elastic reset by the elastic movable contact 7.
To make the utility model structure more reasonable, as preferable, the interval of some pieces of riding positions of phosphor-copper clamping plate 61
Identical and parallel to each other between some pieces of phosphor-copper clamping plates 61, being riveted outside some pieces of phosphor-copper clamping plates 61 has insulation fixing plate 64.It is described
The profile of PTC-element 62 is identical with the profile of phosphor-copper clamping plate 61, and the quantity of phosphor-copper clamping plate 61 sets more than four pieces.The elasticity
Movable contact 7 is wholely set the extinguishing arc mechanism tie point 71 to arch upward close to extinguishing arc mechanism end.
The housing 1 is plastic casing, and overload Shuan Jin mechanisms 8, handle 9 and binding post 10 are additionally provided with housing 1.
Operation principle：
Static contact 5 and movable contact 7 form switch K2；Moving contact 4 and movable contact 7 form switch K1.
The making process of breaker, as shown in Figure 5-10：
Moving contact 4, which first promotes, connects movable contact 7, i.e. K2 closures.(it can prevent moving contact 4 from colliding static contact 5 when closing a floodgate
And the secondary bounce sparking scaling loss contact formed).Static contact 5, i.e. K1 closures are contacted again.Contact 4,5,6 is combined into a bit, and circuit is in
On-state, PTC-element f hardly pass through electric current in itself.
Circuit breaker trip process, as illustrated in figures 11-16：
When short circuit or overload trip, tripping coil 2 promotes tripping mechanism 3, moving contact 4 is separated with static contact 5
When, first K1 is opened, meanwhile, circuit seals in PTC-element current limliting.K2 is opened again, that is, completes thick-less vane.
The PTC-element serial or parallel connection between some pieces of phosphor-copper clamping plates is set to adapt to properties of product by metallic conduction plate
Need, and radiated to PTC-element；The PTC-element is conductive polymer PTC element；The conductive polymer PTC element is flat
Often, resistance very little is general several ohm to tens ohm.When passing through Short-Circuit High Current, moment resistance exponentially becomes big and short
Road electric current is bigger, and the reaction time is shorter, can clamp down on short circuit current 50KA in below 1KA in 0.5ms.Reasonable in design,
Simple in construction, easy to manufacture, dependable performance, production cost are low and practicality is good.
Above-described embodiment is served only for that the utility model is further described, no to specific descriptions of the present utility model
It is understood that as the restriction to scope of protection of the utility model, the technician of this area is according to the content pair of above-mentioned utility model
The utility model is made some nonessential modifications and adaptations and each fallen within the scope of protection of the utility model.
Claims (6)
1. a kind of high breaking circuit breaker without arc, including housing (1) and tripping coil (2), tripping mechanism in housing (1)
(3), dynamic contact mechanism (4), static contact mechanism (5) and extinguishing arc mechanism (6), it is characterised in that：The dynamic contact mechanism (4) is moved
Elastic movable contact (7), the elastic movable contact are provided between contact (41) and the static contact (51) of static contact mechanism (5)
(7) one end and moving contact (41) Intermittent Contact of dynamic contact mechanism (4), elastic movable contact (7) other end and extinguishing arc mechanism (6)
Connection；The extinguishing arc mechanism (6) includes some pieces of phosphor-copper clamping plates (61), and one is provided between every two pieces of phosphor-copper clamping plates (61)
PTC-element (62), the both ends of the phosphor-copper clamping plate (61) are provided with metallic conduction plate (63), made by metallic conduction plate (63)
PTC-element (62) serial or parallel connection between some pieces of phosphor-copper clamping plates (61), and metallic conduction plate (63) one end and elasticity activity
Contact (7) Elastic Contact, metallic conduction plate (63) other end and static contact (51) Elastic Contact of static contact mechanism (5).
A kind of 2. high breaking circuit breaker without arc according to claim 1, it is characterised in that：The PTC-element (62) is to lead
Electric polymer PTC-element.
A kind of 3. high breaking circuit breaker without arc according to claim 2, it is characterised in that：The elastic movable contact (7)
It is made up of phosphor-copper strip material.
A kind of 4. high breaking circuit breaker without arc according to claim 3, it is characterised in that：Some pieces of phosphor-copper clamping plate (61) peaces
It is identical to put the interval of position, and it is parallel to each other between some pieces of phosphor-copper clamping plates (61), some pieces of phosphor-copper clamping plates (61) rivet outside to be had
Insulation fixing plate (64).
A kind of 5. high breaking circuit breaker without arc according to claim 1, it is characterised in that：The elastic movable contact (7)
The extinguishing arc mechanism tie point (71) to arch upward is wholely set close to extinguishing arc mechanism end.
A kind of 6. high breaking circuit breaker without arc according to claim 1, it is characterised in that：The housing (1) is plastic housing
Body, housing (1) is interior to be additionally provided with overload Shuan Jin mechanisms (8), handle (9) and binding post (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720814523.9U CN206877954U (en) | 2017-07-06 | 2017-07-06 | A kind of high breaking circuit breaker without arc |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720814523.9U CN206877954U (en) | 2017-07-06 | 2017-07-06 | A kind of high breaking circuit breaker without arc |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206877954U true CN206877954U (en) | 2018-01-12 |
Family
ID=61329412
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720814523.9U Active CN206877954U (en) | 2017-07-06 | 2017-07-06 | A kind of high breaking circuit breaker without arc |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206877954U (en) |
-
2017
- 2017-07-06 CN CN201720814523.9U patent/CN206877954U/en active Active
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