CN108666185A - A kind of high current miniature circuit breaker - Google Patents
A kind of high current miniature circuit breaker Download PDFInfo
- Publication number
- CN108666185A CN108666185A CN201710209164.9A CN201710209164A CN108666185A CN 108666185 A CN108666185 A CN 108666185A CN 201710209164 A CN201710209164 A CN 201710209164A CN 108666185 A CN108666185 A CN 108666185A
- Authority
- CN
- China
- Prior art keywords
- arc
- chutes
- tab
- circuit breaker
- high current
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000003068 static effect Effects 0.000 claims abstract description 23
- 230000007246 mechanism Effects 0.000 claims abstract description 21
- 238000005192 partition Methods 0.000 claims abstract description 18
- 238000005452 bending Methods 0.000 claims description 17
- 210000003205 muscle Anatomy 0.000 claims description 8
- 230000007704 transition Effects 0.000 claims description 8
- 238000000926 separation method Methods 0.000 claims description 6
- 238000010891 electric arc Methods 0.000 abstract description 11
- 238000010586 diagram Methods 0.000 description 4
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 3
- 239000010931 gold Substances 0.000 description 3
- 229910052737 gold Inorganic materials 0.000 description 3
- 230000005611 electricity Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005465 channeling Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000686 essence Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H73/00—Protective overload circuit-breaking switches in which excess current opens the contacts by automatic release of mechanical energy stored by previous operation of a hand reset mechanism
- H01H73/02—Details
- H01H73/18—Means for extinguishing or suppressing arc
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
- H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
Landscapes
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
The present invention relates to a kind of high current miniature circuit breakers, including shell, operating mechanism, electromagnetic system, thermo-magnetic system, arc-extinguish chamber, connecting terminal, operating mechanism and electromagnetic system are oppositely arranged in shell, arc-chutes are formed in shell below operating mechanism and electromagnetic system, arc-extinguish chamber is arranged in the arc-chutes below electromagnetic system, thermo-magnetic system is arranged in front of arc-chutes, partition wall is provided between arc-chutes and thermo-magnetic system, an opening is formed between side wall and partition wall above arc-chutes, the contact supporting lower end of operating mechanism forms baffle, baffle plate setting is in the top that arc-chutes are open, static contact lower end forms run-on tab, upper run-on tab includes first half and latter half of, first half is connect with static contact, it is latter half of to be connect with connecting terminal, it is latter half of that gap together is formed between first half.Breaking capacity of the present invention is high and can prevent from altering on the heat gas and electric arc that generate in arc-extinguish chamber.
Description
Technical field
The present invention relates to a kind of high current miniature circuit breakers.
Background technology
Miniature circuit breaker, especially high current miniature circuit breaker will produce electric arc in disjunction, and electric arc draws along run-on tab
Separate in arc-extinguish chamber and extinguish, in high current disjunction, since electric current is reduced rapidly, electromagnetic coil will produce induced current obstruction
Electric current reduces, to prevent the electric arc between static contact and moving contact to influence the normal disjunction of miniature circuit breaker from quickly extinguishing,
And miniature circuit breaker internal temperature rise is improved, it is to improve one of big obstruction for miniature circuit breaker rated current.And it is small-sized disconnected
The arc-extinguish chamber of road device will produce amount of heat during extinguishing electric arc, and heat can be spread around, largely pass through arc extinguishing
The heat emission hole at cover rear disperses away, but since arc-extinguish chamber does not separate with operating mechanism, can be to there is still partial heat gas
Upper diffusion, cause the temperature of operating mechanism and electromagnetic system rise it is excessively high, or even have part electric arc it is direct on alter, influence small-sized open circuit
The service life of device.
Invention content
It is an object of the invention to solve above-mentioned technical problem, it is high and can prevent in arc-extinguish chamber to provide a kind of breaking capacity
The high current miniature circuit breaker altered on the heat gas and electric arc of generation.
To achieve the above object, the present invention uses a kind of high current miniature circuit breaker, including shell, operating mechanism, electromagnetism
System, thermo-magnetic system, arc-extinguish chamber, connecting terminal, operating mechanism and electromagnetic system are oppositely arranged in shell, operating mechanism and electricity
Arc-chutes are formed in shell below magnetic system, arc-extinguish chamber is arranged in the arc-chutes below electromagnetic system, thermo-magnetic system setting
In front of arc-chutes, connecting terminal is arranged at shell both ends, it is characterised in that：It is provided between the arc-chutes and thermo-magnetic system
Partition wall, forms an opening between the side wall and partition wall above arc-chutes, and operating mechanism includes contact supporting, moving contact,
Contact supporting is arranged in arc-chutes overthe openings, and moving contact is connected to below contact supporting, and electromagnetic system includes electromagnetic coil, quiet
Contact, electromagnetic coil one end are connected on connecting terminal, and the other end is connect with static contact, the moving contact and electromagnetic system of operating mechanism
The static contact of system extends in the opening of arc-chutes, and contact supporting lower end forms baffle, and baffle plate setting is open upper in arc-chutes
Side, static contact lower end form aduncate bending section, the upper run-on tab extended to above arc-extinguish chamber are connected on bending section, on
Run-on tab includes first half and latter half of, and first half is connect with static contact, latter half of to be connect with connecting terminal, latter half of and first half
One of gap is formed between portion.
The present invention be further arranged on the partition wall formed a notch, the thermo-magnetic system include bimetal leaf,
Lower run-on tab, the lower end of bimetal leaf are connect with lower run-on tab one end, and the other end of lower run-on tab passes through notch along partition wall
The lower section of arc-extinguish chamber is extended to the side wall below arc-chutes.
The present invention is further arranged to form the separation muscle of protrusion on the shell of arc-chutes opening.Separating muscle can reduce
The area of opening.
The end that the present invention is further arranged to the first half of the upper run-on tab forms a notch, after upper run-on tab
The front end of half portion forms protrusion and is plugged in the notch, and forms one of arch gap along notch.Arch gap facilitates electric arc
It ascends.
The surface that the present invention is further arranged to the baffle is cambered surface.Cambered surface can be kept in action process and arc-chutes
Opening adaptation.
The first half leading portion that the present invention is further arranged to the upper run-on tab is welded on the inside of the bending section of static contact.
It includes wire frame and terminal plate that the present invention, which is further arranged to the connecting terminal, and terminal plate includes outer portion of company, mistake
Portion, interior portion of company are crossed, outer portion of company and interior portion of company are horizontally disposed, and transition part vertical connection connects outside between portion and interior portion of company, outer portion of company
It is plugged in wire frame, interior portion of company is connect with electromagnetic coil one end, and the latter half of of upper run-on tab is connected on transition part.
The present invention is further arranged to the first half bending inwardly of the bimetal leaf, the first half pair of the partition wall
Answer bimetal leaf bending inwardly.Inside bending can reduce the opening area of arc-chutes.
It includes multi-disc arc extinguishing grid pieces and side plate that the present invention, which is further arranged to the arc-extinguish chamber, and multi-disc arc extinguishing grid pieces are equidistantly set
It sets between the side plates, multiple tracks diversion trench is formed on the arc-chutes side wall in front of arc-extinguish chamber, between multiple tracks diversion trench and arc extinguishing grid pieces
Crack be arranged in a one-to-one correspondence, diversion trench inner end be arranged in arc-extinguish chamber front end, diversion trench outer end, which is bent upwards, is connected to separation muscle
On the side wall above arc-chutes.One-to-one diversion trench water conservancy diversion effect is good.
The beneficial effects of the invention are as follows partition wall is arranged between arc-extinguish chamber and thermo-magnetic system, set below contact supporting
Baffle is set, by baffle and partition wall and original arc-chutes side wall by the space of one relative closure in arc-chutes besieged city, is moved
Contact and static contact are arranged in arc-chutes, and in moving contact and static contact disjunction, electric arc and hot gas can be by baffles and separation
Wall blocks, and prevents from channeling in operating system and electromagnetic system on electric arc and hot gas, reduces internal temperature rise, improves use
Service life；Upper run-on tab is extended to from static contact lower end on connecting terminal, and one section of crack is arranged among upper run-on tab and separates just
Electric current when normal open electricity, in disjunction high current, the electric current that electromagnetic induction generates can be directly by upper run-on tab, due to upper striking
Plate is short more than electromagnetic coil, by the far fast mistake of the reduction speed of the electric current of upper run-on tab by the reduction speed of electromagnetic coil, because
This achievees the purpose that quickly to reduce electric current, realizes the quick disjunction of electric arc, substantially increase the rated current of miniature circuit breaker.
Description of the drawings
Fig. 1 is the schematic diagram of the specific embodiment of the invention.
Fig. 2 is the enclosure interior schematic diagram of the specific embodiment of the invention.
Fig. 3 is the electromagnetic system schematic diagram of the specific embodiment of the invention.
Fig. 4 is the electromagnetic system schematic diagram of the specific embodiment of the invention.
Specific implementation mode
As Figure 1-Figure 4, specific embodiments of the present invention are a kind of high current miniature circuit breaker, including shell 1, operation
Mechanism 2, electromagnetic system 3, thermo-magnetic system 4, arc-extinguish chamber 5, connecting terminal 6, operating mechanism 2 and electromagnetic system 3 are oppositely arranged on shell
In body 1, arc-chutes 11 are formed in the shell 1 of 3 lower section of operating mechanism 2 and electromagnetic system, arc-extinguish chamber 5 is arranged under electromagnetic system 3
In the arc-chutes 11 of side, the setting of thermo-magnetic system 4 is provided with separation in 11 front of arc-chutes between arc-chutes 11 and thermo-magnetic system 4
Wall 12 forms an opening, protrusion is formed on the shell of opening between the upper side wall 111 and partition wall 12 of 11 top of arc-chutes
Separation muscle 13, the upper end of partition wall 12 lateral bend into arc-chutes connect with muscle 13 is separated, and operating mechanism 2 includes contact supporting
21, moving contact 22, double golden pull rods 23, moving contact 22 are connected to 21 lower section of contact supporting, and 23 one end of double gold pull rods is connected to contact
On holder 21, electromagnetic system 3 include electromagnetic coil 31, static contact 32, rod system, 31 both ends of electromagnetic coil respectively with terminals
Son 6 is connected with 32 upper end of static contact, and the moving contact 22 of operating mechanism 2 and the static contact 32 of electromagnetic system 3 are arranged in arc-chutes 11
Opening in, 21 lower end of contact supporting forms baffle 211, and the surface of baffle 211 is cambered surface, and baffle 211 is arranged in arc-chutes 11
The top of opening, forms a notch 121 on partition wall 12, and thermo-magnetic system 4 includes bimetal leaf 41, lower run-on tab 42, double gold
The lower end for belonging to piece 41 is connect with lower 42 one end of run-on tab, and the other end of lower run-on tab 42 passes through notch 121 along 12 He of partition wall
The side wall of 11 lower section of arc-chutes extends to the lower section of arc-extinguish chamber 5, the first half bending inwardly of bimetal leaf 41, double gold pull rods 23
Middle part forms bending outer end and hooks in 41 upper end of bimetal leaf, and the first half of partition wall 12 corresponds to the bending inwardly of bimetal leaf 41,
32 lower end of static contact forms aduncate bending section 33, and the upper striking for extending to 5 top of arc-extinguish chamber is connected on bending section 33
Plate 34, upper run-on tab 34 are extended in parallel along 5 upper surface of arc-extinguish chamber, and upper run-on tab 34 includes first half 341 and latter half of 342, preceding
Half portion 341 is connect with static contact 32, and 341 front end of first half is welded on the inside of bending section 33 of static contact 32, latter half of 342 with connect
Line terminals 6 connect, connecting terminal 6 include wire frame 62 and terminal plate 61, terminal plate 61 include outer portion of company 611, transition part 612,
Interior portion of company 613, outer portion of company 611 and the portions Nei Lian 613 are horizontally disposed, and 612 vertical connection of transition part connects portion 611 and the portions Nei Lian outside
Between 613, outer portion of company 611 is plugged in wire frame 62, and interior portion of company 613 is connect with 31 one end of electromagnetic coil, upper run-on tab 34
Latter half of 342 are connected on transition part 612, and the end of the first half 341 of upper run-on tab 34 forms a notch 343, upper striking
Latter half of 342 front end of plate 34 forms protrusion 344 and is plugged in notch 343, along convex between latter half of 342 and first half 341
Rise 344 formed with the junction of notch 343 together with arch gap 345；Arc-extinguish chamber 5 includes multi-disc arc extinguishing grid pieces 51 and side plate 52,
Multi-disc arc extinguishing grid pieces 51 are placed equidistant between side plate 52, and multiple tracks diversion trench is formed on 11 side wall of arc-chutes in 5 front of arc-extinguish chamber
14, the crack between multiple tracks diversion trench 14 and arc extinguishing grid pieces 51 is arranged in a one-to-one correspondence, and 14 inner end of diversion trench is arranged before arc-extinguish chamber 5
End, 14 outer end of diversion trench are bent upwards on the side wall for being connected to and separating 11 top of muscle 13 and arc-chutes.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
With within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention god.
Claims (9)
1. a kind of high current miniature circuit breaker, including shell, operating mechanism, electromagnetic system, thermo-magnetic system, arc-extinguish chamber, terminals
Son, operating mechanism and electromagnetic system are oppositely arranged in shell, and arc extinguishing is formed in the shell below operating mechanism and electromagnetic system
Room, arc-extinguish chamber are arranged in the arc-chutes below electromagnetic system, and thermo-magnetic system is arranged in front of arc-chutes, and connecting terminal setting exists
Shell both ends, it is characterised in that：Partition wall is provided between the arc-chutes and thermo-magnetic system, the side wall above arc-chutes with point
An opening is formed between next door, operating mechanism includes contact supporting, moving contact, and contact supporting setting is in arc-chutes opening
Side, moving contact are connected to below contact supporting, and electromagnetic system includes electromagnetic coil, static contact, and electromagnetic coil one end, which is connected to, to be connect
In line terminals, the other end is connect with static contact, and the moving contact of operating mechanism and the static contact of electromagnetic system extend to arc-chutes
In opening, contact supporting lower end forms baffle, and baffle plate setting is formed and curved inwardly in the top that arc-chutes are open, static contact lower end
Bending section, be connected with the upper run-on tab extended to above arc-extinguish chamber on bending section, upper run-on tab includes first half and latter half of,
First half is connect with static contact, latter half of to be connect with connecting terminal, latter half of that gap together is formed between first half.
2. high current miniature circuit breaker according to claim 1, it is characterised in that：One is formed on the partition wall to lack
Mouthful, the thermo-magnetic system includes bimetal leaf, lower run-on tab, and the lower end of bimetal leaf is connect with lower run-on tab one end, lower striking
The other end of plate extends to the lower section of arc-extinguish chamber across side wall of the notch below partition wall and arc-chutes.
3. high current miniature circuit breaker according to claim 1 or 2, it is characterised in that：In the shell of arc-chutes opening
The upper separation muscle for forming protrusion.
4. high current miniature circuit breaker according to claim 1 or 2, it is characterised in that：The first half of the upper run-on tab
End form a notch, the latter half of front end of upper run-on tab forms protrusion and is plugged in the notch, and along notch shape
At one of arch gap.
5. high current miniature circuit breaker according to claim 1 or 2, it is characterised in that：The surface of the baffle is cambered surface.
6. high current miniature circuit breaker according to claim 1 or 2, it is characterised in that：The first half of the upper run-on tab
Leading portion is welded on the inside of the bending section of static contact.
7. high current miniature circuit breaker according to claim 1 or 2, it is characterised in that：The connecting terminal includes wiring
Frame and terminal plate, terminal plate include outer portion of company, transition part, interior portion of company, and outer portion of company and interior portion of company are horizontally disposed, and transition part vertically connects
It is connected between outer portion of company and interior portion of company, outer portion of company is plugged in wire frame, and interior portion of company is connect with electromagnetic coil one end, upper run-on tab
Latter half of be connected on transition part.
8. high current miniature circuit breaker according to claim 2, it is characterised in that：The first half of the bimetal leaf is inside
The first half of side bending, the partition wall corresponds to bimetal leaf bending inwardly.
9. high current miniature circuit breaker according to claim 1 or 2, it is characterised in that：The arc-extinguish chamber includes that multi-disc is gone out
Arc grid and side plate, multi-disc arc extinguishing grid pieces are placed equidistant between the side plates, and multiple tracks is formed on the arc-chutes side wall in front of arc-extinguish chamber
Diversion trench, the crack between multiple tracks diversion trench and arc extinguishing grid pieces are arranged in a one-to-one correspondence, and diversion trench inner end is arranged in arc-extinguish chamber front end,
Diversion trench outer end is bent upwards on the side wall for being connected to and separating above muscle and arc-chutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710209164.9A CN108666185B (en) | 2017-03-31 | 2017-03-31 | Large-current miniature circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710209164.9A CN108666185B (en) | 2017-03-31 | 2017-03-31 | Large-current miniature circuit breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108666185A true CN108666185A (en) | 2018-10-16 |
| CN108666185B CN108666185B (en) | 2023-12-05 |
Family
ID=63783977
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710209164.9A Active CN108666185B (en) | 2017-03-31 | 2017-03-31 | Large-current miniature circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108666185B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113889383A (en) * | 2021-08-31 | 2022-01-04 | 浙江渤创电力科技有限公司 | Circuit breaker |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101916695A (en) * | 2010-08-06 | 2010-12-15 | 上海良信电器股份有限公司 | Double-layer electric arc isolation device of miniature circuit breaker |
| JP2011014350A (en) * | 2009-07-01 | 2011-01-20 | Mitsubishi Electric Corp | Circuit breaker |
| US20110079583A1 (en) * | 2009-10-05 | 2011-04-07 | Siemens Industry, Inc. | Circuit breaker having dual arc chamber |
| CN201838534U (en) * | 2010-09-16 | 2011-05-18 | 方华朋 | Arc-extinguishing mechanism of minitype circuit breaker |
| EP2685482A1 (en) * | 2012-07-12 | 2014-01-15 | Siemens Aktiengesellschaft | Protective switch device and magnet yoke |
| CN204118018U (en) * | 2014-10-21 | 2015-01-21 | 加西亚电子电器有限公司 | Miniature circuit breaker |
| CN204596739U (en) * | 2015-05-21 | 2015-08-26 | 许昌许继低压电器有限公司 | Miniature circuit breaker and backplate thereof |
| CN206602092U (en) * | 2017-03-31 | 2017-10-31 | 温州圣普电气有限公司 | A kind of high current miniature circuit breaker |
-
2017
- 2017-03-31 CN CN201710209164.9A patent/CN108666185B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011014350A (en) * | 2009-07-01 | 2011-01-20 | Mitsubishi Electric Corp | Circuit breaker |
| US20110079583A1 (en) * | 2009-10-05 | 2011-04-07 | Siemens Industry, Inc. | Circuit breaker having dual arc chamber |
| CN101916695A (en) * | 2010-08-06 | 2010-12-15 | 上海良信电器股份有限公司 | Double-layer electric arc isolation device of miniature circuit breaker |
| CN201838534U (en) * | 2010-09-16 | 2011-05-18 | 方华朋 | Arc-extinguishing mechanism of minitype circuit breaker |
| EP2685482A1 (en) * | 2012-07-12 | 2014-01-15 | Siemens Aktiengesellschaft | Protective switch device and magnet yoke |
| CN204118018U (en) * | 2014-10-21 | 2015-01-21 | 加西亚电子电器有限公司 | Miniature circuit breaker |
| CN204596739U (en) * | 2015-05-21 | 2015-08-26 | 许昌许继低压电器有限公司 | Miniature circuit breaker and backplate thereof |
| CN206602092U (en) * | 2017-03-31 | 2017-10-31 | 温州圣普电气有限公司 | A kind of high current miniature circuit breaker |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113889383A (en) * | 2021-08-31 | 2022-01-04 | 浙江渤创电力科技有限公司 | Circuit breaker |
| CN113889383B (en) * | 2021-08-31 | 2023-09-05 | 浙江渤创电力科技有限公司 | Circuit breaker |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108666185B (en) | 2023-12-05 |
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