CN102820182A - Large-current miniature circuit breaker - Google Patents

Large-current miniature circuit breaker Download PDF

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Publication number
CN102820182A
CN102820182A CN201210300458XA CN201210300458A CN102820182A CN 102820182 A CN102820182 A CN 102820182A CN 201210300458X A CN201210300458X A CN 201210300458XA CN 201210300458 A CN201210300458 A CN 201210300458A CN 102820182 A CN102820182 A CN 102820182A
Authority
CN
China
Prior art keywords
lock catch
yoke
armature
plastic lock
circuit breaker
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
Application number
CN201210300458XA
Other languages
Chinese (zh)
Other versions
CN102820182B (en
Inventor
黄明光
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
WENZHOU NEW BLUE SKY ELECTRICAL CO Ltd
Original Assignee
WENZHOU NEW BLUE SKY ELECTRICAL CO Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by WENZHOU NEW BLUE SKY ELECTRICAL CO Ltd filed Critical WENZHOU NEW BLUE SKY ELECTRICAL CO Ltd
Priority to CN201210300458.XA priority Critical patent/CN102820182B/en
Publication of CN102820182A publication Critical patent/CN102820182A/en
Priority to FR1358096A priority patent/FR2994765A1/en
Application granted granted Critical
Publication of CN102820182B publication Critical patent/CN102820182B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • 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

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

A kind of heavy-current micro circuit breaker
Technical field
The present invention relates to field of circuit breakers, be specifically related to a kind of heavy-current micro circuit breaker.
Background technology
Miniature circuit breaker; Generally include housing; Be provided with operating mechanism, plastic lock catch frame, tripping mechanism, moving contact, fixed contact, arc control device and bimetal leaf in the housing; Both sides in the housing also are respectively arranged with binding post, and bimetal leaf one end is connected with the binding post conducting of a side in the housing, and the bimetal leaf other end is connected with the moving contact conducting through brush wire; The plastic lock catch frame is hinged to be arranged in the housing, and the plastic lock catch frame comprises latch part that matches with operating mechanism and the instantaneous trip portion that matches with tripping mechanism.Traditional miniature circuit breaker; Its tripping mechanism adopts magnetictrip usually, and the coil of magnetictrip is connected with the bimetal leaf conduction, and circuit breaker is when normal condition; The plastic lock catch frame is the maintenance operating mechanism under the effect of back-moving spring, makes moving contact and fixed contact be conducted; When short circuit current passes through the coil of bimetal leaf and magnetictrip; The magnetic field force that coil produces overcomes the reaction spring adhesive armature and hits draw bar; Draw bar drive plastic lock catch frame overcomes action of reset spring power and rotates; Thereby make operating mechanism and the tripping mutually of plastic lock catch frame, 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 bigger volume; And miniature circuit breaker receives the overall volume restriction, thereby can only reduce the volume of arc control device, thereby has limited its breaking capacity and rated current; Traditional outer casing width is the miniature circuit breaker of 18mm, and its rated current has only 63A.
Summary of the invention
To the deficiency that prior art exists, the object of the present invention is to provide a kind of simple in structure, cost is lower and improve the miniature circuit breaker of breaking capacity and rated current greatly.
For realizing above-mentioned purpose; The invention provides following technical scheme: a kind of heavy-current micro circuit breaker; Comprise housing; Be provided with operating mechanism, plastic lock catch frame, tripping mechanism, moving contact, fixed contact, arc control device and bimetal leaf in the housing, the both sides in the housing also are respectively arranged with binding post, and said plastic lock catch frame is hinged to be arranged in the housing; Said plastic lock catch frame comprises latch part that matches with operating mechanism and the instantaneous trip portion that matches with tripping mechanism; Said tripping mechanism comprises electromagnetic induction element and armature, the setting that matches with bimetal leaf of said electromagnetic induction element, and said armature is fixedly installed on the instantaneous trip portion of said plastic lock catch frame and the setting that matches with electromagnetic induction element.
The present invention further is provided with: said electromagnetic induction element is set to yoke, and said yoke is fixedly installed in the housing, and said bimetal leaf passes the yoke setting, and corresponding armature one side of said yoke is the opening setting.
The present invention further is provided with: said yoke and bimetal leaf are fixed through spot-welded on.
The present invention further is provided with: corresponding yoke one side of the instantaneous trip portion of said plastic lock catch frame is provided with the projection towards yoke direction protrusion, and said armature is set on the said projection, and said projection top is provided with the positive stop lug boss that prevents that armature breaks away from.
Technical scheme of the present invention has been cancelled the magnetictrip of traditional miniature circuit breaker, makes that the miniature circuit breaker structure is simpler; And reduced production cost; And effectively reduced internal volume, just can increase the volume of arc control device, thereby improved breaking capacity and rated current.
Below in conjunction with accompanying drawing the present invention is further described.
Description of drawings
Fig. 1 is an embodiment of the invention structure chart;
Fig. 2 is the A portion enlarged drawing of Fig. 1;
Fig. 3 is plastic lock catch frame example structure figure of the present invention.
Embodiment
Referring to accompanying drawing 1 to accompanying drawing 3; Heavy-current micro circuit breaker disclosed by the invention; Comprise housing 1; Be provided with operating mechanism 2, plastic lock catch frame 3, tripping mechanism, moving contact 4, fixed contact 5, arc control device 6 and bimetal leaf 7 in the housing 1; Operating mechanism 2 comprises handle 201, tripping 202, indication lever 203 and the small rack 204 that is interlock and is provided with, and small rack 204 is interlock setting with moving contact 4, and the both sides in the housing 1 also are respectively arranged with binding post 8; Bimetal leaf 7 one ends are connected with binding post 8 conductings of a side in the housing 1 through terminal block 9 and flexible link 10; Bimetal leaf 7 other ends are connected with moving contact 4 conductings through brush wire 11, said plastic lock catch frame 3 hinged being arranged in the housing 1, and said plastic lock catch frame 3 comprises latch part 301 that matches with operating mechanism 2 and the instantaneous trip portion 302 that matches with tripping mechanism; The setting that matches with the latch part 301 of plastic lock catch frame 3 of tripping 202 1 ends of operating mechanism 2; Said tripping mechanism comprises electromagnetic induction element 12 and armature 13, the setting that matches with bimetal leaf 7 of said electromagnetic induction element 12, and said armature 13 is fixedly installed on the instantaneous trip portion 302 of said plastic lock catch frame 3 and the setting that matches with electromagnetic induction element 13.So be provided with, when circuit breaker during in normal condition, plastic lock catch frame 3 is maintenance operating mechanism 2 under the effect of back-moving spring, makes moving contact 4 and fixed contact 5 be conducted; When short circuit current process bimetal leaf 7; Electromagnetic induction element 12 produces electromagnetic induction and produces magnetic field; Thereby the armature in the instantaneous trip portion 302 that is fixed on plastic lock catch frame 3 13 is produced suction; When the action of reset spring power of customer service plastic lock catch frame 3, plastic lock catch frame 3 rotates, thereby makes the tripping 202 and the latch part 301 of plastic lock catch frame 3 be separated; And then indicate lever 203 and small rack 204 to link, so that small rack 204 makes moving contact 4 generation actions break off mutually with fixed contact 5.
Present embodiment electromagnetic induction element 12 preferably is set to yoke, and said yoke is fixedly installed in the housing 1, and said bimetal leaf 7 passes the yoke setting, and corresponding armature 13 1 sides of said yoke are the opening setting.So be provided with when short circuit current process bimetal leaf 7, yoke produces magnetic field so that armature 13 is produced suction.
Yoke of the present invention can adopt multitude of different ways to be fixed in the housing, as directly being fixedly connected with housing 1, but considers the performance requirement of housing 1, and present embodiment is preferred, and said yoke and bimetal leaf 7 are fixed through spot-welded on.
Armature 13 of the present invention can fix through the instantaneous trip portion 302 of multitude of different ways and plastic lock catch frame 3; Paste fixing like armature 13 mutually with the instantaneous trip portion 302 of plastic lock catch frame 3; Or armature 13 directly is coated on the instantaneous trip portion 302 of plastic lock catch frame 3; The steadiness that simplification and the armature 13 of considering structure and the instantaneous trip portion 302 of plastic lock catch frame 3 fix, present embodiment is preferred, and instantaneous trip portion 302 corresponding yoke one sides of said plastic lock catch frame 3 are provided with the projection towards yoke direction protrusion; Said armature 13 is set on the said projection, and said projection top is provided with the positive stop lug boss 303 that prevents that armature 13 breaks away from.
Technical scheme of the present invention has been cancelled the magnetictrip of traditional miniature circuit breaker, makes that the miniature circuit breaker structure is simpler; And reduced production cost; And effectively reduced internal volume, just can increase the volume of arc control device 6, thereby improved breaking capacity and rated current.

Claims (4)

1. heavy-current micro circuit breaker; Comprise housing; Be provided with operating mechanism, plastic lock catch frame, tripping mechanism, moving contact, fixed contact, arc control device and bimetal leaf in the housing; Both sides in the housing also are respectively arranged with binding post; Said plastic lock catch frame is hinged to be arranged in the housing, and said plastic lock catch frame comprises latch part that matches with operating mechanism and the instantaneous trip portion that matches with tripping mechanism, and it is characterized in that: said tripping mechanism comprises electromagnetic induction element and armature; The setting that matches with bimetal leaf of said electromagnetic induction element, said armature are fixedly installed on the instantaneous trip portion of said plastic lock catch frame and the setting that matches with electromagnetic induction element.
2. heavy-current micro circuit breaker according to claim 1; It is characterized in that: said electromagnetic induction element is set to yoke; Said yoke is fixedly installed in the housing, and said bimetal leaf passes the yoke setting, and corresponding armature one side of said yoke is the opening setting.
3. heavy-current micro circuit breaker according to claim 2 is characterized in that: said yoke and bimetal leaf are fixed through spot-welded on.
4. according to claim 1 or 2 or 3 described heavy-current micro circuit breakers; It is characterized in that: corresponding yoke one side of the instantaneous trip portion of said plastic lock catch frame is provided with the projection towards yoke direction protrusion; Said armature is set on the said projection, and said projection top is provided with the positive stop lug boss that prevents that armature breaks away from.
CN201210300458.XA 2012-08-22 2012-08-22 Large-current miniature circuit breaker Active CN102820182B (en)

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 true CN102820182A (en) 2012-12-12
CN102820182B CN102820182B (en) 2015-07-01

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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)

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CN (1) CN102820182B (en)
FR (1) FR2994765A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103560058A (en) * 2013-11-11 2014-02-05 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

Citations (6)

* Cited by examiner, † Cited by third party
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
CN2140561Y (en) * 1992-12-31 1993-08-18 张莎莉 Improved switch structure without fuse
CN201259871Y (en) * 2008-03-05 2009-06-17 穆勒建筑物自动化有限公司 Switch
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

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
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
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

Patent Citations (6)

* Cited by examiner, † Cited by third party
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
CN2140561Y (en) * 1992-12-31 1993-08-18 张莎莉 Improved switch structure without fuse
CN201259871Y (en) * 2008-03-05 2009-06-17 穆勒建筑物自动化有限公司 Switch
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

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103560058A (en) * 2013-11-11 2014-02-05 温州市新蓝天电器有限公司 Circuit breaker
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

Also Published As

Publication number Publication date
CN102820182B (en) 2015-07-01
FR2994765A1 (en) 2014-02-28

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