CN102820182B - Large-current miniature circuit breaker - Google Patents
Large-current miniature circuit breaker Download PDFInfo
- Publication number
- CN102820182B CN102820182B CN201210300458.XA CN201210300458A CN102820182B CN 102820182 B CN102820182 B CN 102820182B CN 201210300458 A CN201210300458 A CN 201210300458A CN 102820182 B CN102820182 B CN 102820182B
- Authority
- CN
- China
- Prior art keywords
- yoke
- armature
- buckle frame
- tripping
- electromagnetic induction
- 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.)
- Active
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/40—Combined electrothermal and electromagnetic mechanisms
- H01H71/405—Combined electrothermal and electromagnetic mechanisms in which a bimetal forms the inductor for the electromagnetic mechanism
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/40—Combined electrothermal and electromagnetic mechanisms
- H01H71/402—Combined electrothermal and electromagnetic mechanisms in which the thermal mechanism influences the magnetic circuit of the electromagnetic mechanism
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/02—Housings; Casings; Bases; Mountings
- H01H71/0207—Mounting or assembling the different parts of the circuit breaker
- H01H2071/0242—Assembling parts of a circuit breaker by using snap mounting techniques
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/24—Electromagnetic mechanisms
- H01H2071/249—Electromagnetic mechanisms with part of the magnetic circuit being in the normal current path in the circuit breaker, e.g. yoke, fixed contact and arc-runner are made out of one single conductive element
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/24—Electromagnetic mechanisms
- H01H71/2472—Electromagnetic mechanisms with rotatable armatures
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/44—Automatic release mechanisms with or without manual release having means for introducing a predetermined time delay
- H01H71/446—Automatic release mechanisms with or without manual release having means for introducing a predetermined time delay making use of an inertia mass
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Breakers (AREA)
Abstract
The invention relates to a large-current miniature circuit breaker, which comprises a shell. An operating mechanism, a plastic lock catch support, a tripping mechanism, a moving contact, a fixed contact, an arc extinguishing chamber and a bimetal sheet are arranged in the shell. Wiring terminals are respectively arranged on the two sides of the internal part of the shell. The plastic lock catch support is hinged in the shell. The plastic lock catch support comprises a lock catch part which is matched with the operating mechanism and an instantaneous tripping part which is matched with the tripping mechanism. The tripping mechanism comprises an electromagnetic induction element and an armature. The electromagnetic induction element is matched with the bimetal sheet. The armature is fixedly arranged at the instantaneous tripping part of the plastic lock catch support and is matched with the electromagnetic induction element. By adopting the technical scheme, the large-current miniature circuit breaker has the effects that the structure is simple, the cost is lower, and the breaking capacity and the rated current are greatly improved.
Description
Technical field
The present invention relates to field of circuit breakers, be specifically related to a kind of large-current miniature circuit breaker.
Background technology
Miniature circuit breaker, generally include housing, operating mechanism, plastic latch buckle frame, tripping mechanism, moving contact, fixed contact, arc control device and bimetal leaf is provided with in housing, both sides in housing are also respectively arranged with binding post, bimetal leaf one end is connected with the binding post conducting of side in housing, the bimetal leaf other end is connected with moving contact conducting by brush wire, plastic latch buckle frame is hinged to be arranged in housing, and plastic latch buckle frame comprises the latch part matched with operating mechanism and the instantaneous trip portion matched with tripping mechanism.Traditional miniature circuit breaker, its tripping mechanism adopts magnetictrip usually, and the coil of magnetictrip conducts electricity with bimetal leaf and is connected, and circuit breaker is when normal condition, plastic latch buckle frame keeps operating mechanism under the effect of back-moving spring, and moving contact and fixed contact are conducted; When short circuit current is through the coil of bimetal leaf and magnetictrip, the magnetic field force that coil produces overcomes reaction spring adhesive armature and hits draw bar, draw bar drives plastic latch buckle frame overcome action of reset spring power and rotate, thus make operating mechanism and the tripping of plastic latch buckle frame phase, finally make moving contact and fixed contact be separated and cut off circuit.Traditional miniature circuit breaker, tripping mechanism adopts magnetictrip, and magnetictrip is arranged on the top of arc control device usually, because magnetictrip has larger volume, and miniature circuit breaker is subject to overall volume restriction, thus the volume of arc control device can only be reduced, thus limit its breaking capacity and rated current, traditional outer casing width is the miniature circuit breaker of 18mm, and its rated current only has 63A.
Summary of the invention
For the deficiency that prior art exists, the object of the present invention is to provide that a kind of structure is simple, cost is lower and greatly improve the miniature circuit breaker of breaking capacity and rated current.
For achieving the above object, the invention provides following technical scheme: a kind of large-current miniature circuit breaker, comprise housing, operating mechanism is provided with in housing, plastic latch buckle frame, tripping mechanism, moving contact, fixed contact, arc control device and bimetal leaf, both sides in housing are also respectively arranged with binding post, described plastic latch buckle frame is hinged to be arranged in housing, described plastic latch buckle frame comprises the latch part matched with operating mechanism and the instantaneous trip portion matched with tripping mechanism, described tripping mechanism comprises electromagnetic induction element and armature, described electromagnetic induction element matches with bimetal leaf and arranges, the instantaneous trip portion matching with electromagnetic induction element that described armature is fixedly installed on described plastic latch buckle frame is arranged.
The present invention is arranged further: described electromagnetic induction element is set to yoke, and described yoke is fixedly installed in housing, and described bimetal leaf is arranged through yoke, and the corresponding armature side of described yoke is that opening is arranged.
The present invention is arranged further: described yoke and bimetal leaf are fixed by spot-welded.
The present invention is arranged further: the corresponding yoke side, instantaneous trip portion of described plastic latch buckle frame is provided with the projection protruded towards yoke direction, and described armature is set on described projection, and described projection top is provided with the positive stop lug boss preventing armature from departing from.
Technical solution of the present invention, eliminates the magnetictrip of traditional miniature circuit breaker, makes miniature circuit breaker structure simpler, and reduce production cost, and effectively reduce internal volume, just can increase the volume of arc control device, thus improve breaking capacity and rated current.
Below in conjunction with accompanying drawing, the invention will be further described.
Accompanying drawing explanation
Fig. 1 is embodiment of the present invention structure chart;
Fig. 2 is the A portion enlarged drawing of Fig. 1;
Fig. 3 is plastic latch buckle frame example structure figure of the present invention.
Embodiment
See accompanying drawing 1 to accompanying drawing 3, large-current miniature circuit breaker disclosed by the invention, comprise housing 1, operating mechanism 2 is provided with in housing 1, plastic latch buckle frame 3, tripping mechanism, moving contact 4, fixed contact 5, arc control device 6 and bimetal leaf 7, operating mechanism 2 comprises the handle 201 arranged in interlock, tripping 202, instruction lever 203 and small rack 204, small rack 204 is arranged in linking with moving contact 4, both sides in housing 1 are also respectively arranged with binding post 8, bimetal leaf 7 one end is connected with binding post 8 conducting of side in housing 1 by terminal block 9 and flexible link 10, bimetal leaf 7 other end is connected with moving contact 4 conducting by brush wire 11, described plastic latch buckle frame 3 is hinged to be arranged in housing 1, described plastic latch buckle frame 3 comprises the latch part 301 matched with operating mechanism 2 and the instantaneous trip portion 302 matched with tripping mechanism, match with the latch part 301 of plastic latch buckle frame 3 and arrange in tripping 202 one end of operating mechanism 2, described tripping mechanism comprises electromagnetic induction element 12 and armature 13, described electromagnetic induction element 12 matches with bimetal leaf 7 and arranges, the instantaneous trip portion 302 matching with electromagnetic induction element 13 that described armature 13 is fixedly installed on described plastic latch buckle frame 3 is arranged.Setting like this, when circuit breaker is in normal condition, plastic latch buckle frame 3 keeps operating mechanism 2 under the effect of back-moving spring, and moving contact 4 and fixed contact 5 are conducted; When short circuit current is through bimetal leaf 7, electromagnetic induction element 12 produces electromagnetic induction and produces magnetic field, thus suction is produced to the armature 13 be fixed in the instantaneous trip portion 302 of plastic latch buckle frame 3, when the action of reset spring power of customer service plastic latch buckle frame 3, plastic latch buckle frame 3 rotates, thus tripping 202 is separated with the latch part 301 of plastic latch buckle frame 3, and then instruction lever 203 links with small rack 204, so that small rack 204 makes moving contact 4 that action occur to disconnect with fixed contact 5 phase.
The present embodiment electromagnetic induction element 12 is preferably set to yoke, and described yoke is fixedly installed in housing 1, and described bimetal leaf 7 is arranged through yoke, and corresponding armature 13 side of described yoke is that opening is arranged.Setting like this is when short circuit current is through bimetal leaf 7, and yoke produces magnetic field to produce suction to armature 13.
Yoke of the present invention can adopt multitude of different ways to be fixed in housing, as being directly fixedly connected with housing 1, but considers the performance requirement of housing 1, and the present embodiment is preferred, and described yoke and bimetal leaf 7 are fixed by spot-welded.
Armature 13 of the present invention fixes by the instantaneous trip portion 302 of multitude of different ways and plastic latch buckle frame 3, as armature 13 and the instantaneous trip portion 302 of plastic latch buckle frame 3 are pasted fixing mutually, or armature 13 is directly coated on the instantaneous trip portion 302 of plastic latch buckle frame 3, consider the steadiness that the simplification of structure and the instantaneous trip portion 302 of armature 13 and plastic latch buckle frame 3 fix, the present embodiment is preferred, the corresponding yoke side, instantaneous trip portion 302 of described plastic latch buckle frame 3 is provided with the projection protruded towards yoke direction, described armature 13 is set on described projection, described projection top is provided with the positive stop lug boss 303 preventing armature 13 from departing from.
Technical solution of the present invention, eliminates the magnetictrip of traditional miniature circuit breaker, makes miniature circuit breaker structure simpler, and reduce production cost, and effectively reduce internal volume, just can increase the volume of arc control device 6, thus improve breaking capacity and rated current.
Claims (1)
1. a large-current miniature circuit breaker, comprise housing, operating mechanism is provided with in housing, plastic latch buckle frame, tripping mechanism, moving contact, fixed contact, arc control device and bimetal leaf, both sides in housing are also respectively arranged with binding post, described plastic latch buckle frame is hinged to be arranged in housing, described plastic latch buckle frame comprises the latch part matched with operating mechanism and the instantaneous trip portion matched with tripping mechanism, it is characterized in that: described operating mechanism comprises the handle arranged in interlock, tripping, instruction lever and small rack, small rack and moving contact are arranged in linking, tripping matches with the latch part of plastic latch buckle frame and arranges, described tripping mechanism comprises electromagnetic induction element and armature, described electromagnetic induction element matches with bimetal leaf and arranges, the instantaneous trip portion matching with electromagnetic induction element that described armature is fixedly installed on described plastic latch buckle frame is arranged, described electromagnetic induction element is set to yoke, and described yoke is fixedly installed in housing, and described bimetal leaf is arranged through yoke, and the corresponding armature side of described yoke is that opening is arranged, described yoke and bimetal leaf are fixed by spot-welded, the corresponding yoke side, instantaneous trip portion of described plastic latch buckle frame is provided with the projection protruded towards yoke direction, and described armature is set on described projection, and described projection top is provided with the positive stop lug boss preventing armature from departing from.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210300458.XA CN102820182B (en) | 2012-08-22 | 2012-08-22 | Large-current miniature circuit breaker |
| FR1358096A FR2994765A1 (en) | 2012-08-22 | 2013-08-20 | HIGH INTENSITY MINIATURE CIRCUIT BREAKER |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210300458.XA CN102820182B (en) | 2012-08-22 | 2012-08-22 | Large-current miniature circuit breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102820182A CN102820182A (en) | 2012-12-12 |
| CN102820182B true CN102820182B (en) | 2015-07-01 |
Family
ID=47304235
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210300458.XA Active CN102820182B (en) | 2012-08-22 | 2012-08-22 | Large-current miniature circuit breaker |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN102820182B (en) |
| FR (1) | FR2994765A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103560058B (en) * | 2013-11-11 | 2016-03-30 | 温州市新蓝天电器有限公司 | Circuit breaker |
| CN108054059A (en) * | 2017-12-28 | 2018-05-18 | 温州市新蓝天电器有限公司 | A kind of breaker with separation type lock buckle tripping device |
| CN108288572A (en) * | 2017-12-28 | 2018-07-17 | 温州市新蓝天电器有限公司 | The breaker of integrated latch tripping mechanism |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2027238A (en) * | 1930-11-26 | 1936-01-07 | Westinghouse Electric & Mfg Co | Circuit breaker |
| US2573306A (en) * | 1948-08-11 | 1951-10-30 | Gen Electric | Electric circuit breaker |
| DE2528711A1 (en) * | 1975-06-27 | 1977-01-13 | Bbc Brown Boveri & Cie | Magnetic trip for electric switchgear - has armature plate through which passes two- part pin with retaining lugs at pin parts ends |
| US4163881A (en) * | 1977-09-29 | 1979-08-07 | Westinghouse Electric Corp. | Circuit breaker with thrust transmitting spring |
| JPH05342967A (en) * | 1992-06-04 | 1993-12-24 | Mitsubishi Electric Corp | Circuit breaker |
| US5237297A (en) * | 1992-07-06 | 1993-08-17 | American Circuit Breaker Corporation | Tripping apparatus for use with an electrical circuit breaker having magnetic tripping responsive to low overcurrent |
| CN2140561Y (en) * | 1992-12-31 | 1993-08-18 | 张莎莉 | Improved switch structure without fuse |
| DE19819242B4 (en) * | 1998-04-29 | 2005-11-10 | Ge Power Controls Polska Sp.Z.O.O. | Thermomagnetic circuit breaker |
| US6838961B2 (en) * | 2003-02-05 | 2005-01-04 | Eaton Corporation | Self-contained mechanism on a frame |
| AT509280A1 (en) * | 2008-03-05 | 2011-07-15 | Moeller Gebaeudeautomation Gmbh | SWITCHGEAR |
| CN201298515Y (en) * | 2008-09-17 | 2009-08-26 | 青田奥来电器有限公司 | Overload protection electronic miniature current leakage breaker |
| CN201622989U (en) * | 2009-11-26 | 2010-11-03 | 无锡唯特电气技术有限公司 | Miniature circuit breaker with high breaking capacity |
| CN202721095U (en) * | 2012-08-22 | 2013-02-06 | 温州市新蓝天电器有限公司 | Large current miniature circuit breaker |
-
2012
- 2012-08-22 CN CN201210300458.XA patent/CN102820182B/en active Active
-
2013
- 2013-08-20 FR FR1358096A patent/FR2994765A1/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| CN102820182A (en) | 2012-12-12 |
| FR2994765A1 (en) | 2014-02-28 |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |