CN105244241A - Moulded-case circuit breaker - Google Patents
Moulded-case circuit breaker Download PDFInfo
- Publication number
- CN105244241A CN105244241A CN201510711233.7A CN201510711233A CN105244241A CN 105244241 A CN105244241 A CN 105244241A CN 201510711233 A CN201510711233 A CN 201510711233A CN 105244241 A CN105244241 A CN 105244241A
- Authority
- CN
- China
- Prior art keywords
- moving contact
- rotating shaft
- breaker
- arc
- plastic casing
- 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
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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
- H01H73/04—Contacts
-
- 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
- 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
- H01H73/22—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 having electrothermal release and no other automatic release
Abstract
The invention relates to a moulded-case circuit breaker and is to solve the problems that an existing moulded-case circuit breaker has poor arc-extinguishing performance, cannot display on-off state of the circuit breaker and has no standby circuit breaker disconnecting element. The moulded-case circuit breaker comprises a surface cover, a base, a moving contact mechanism, an operating mechanism, an arc extinguish chamber, a rotation shaft and a bi-metal structure. The surface cover and the base are fixedly connected through screws to form an internally-hollow structure; the surface cover is provided with a surface cover button for disconnecting the circuit in emergency, and a display lamp for showing the on-off state of the circuit; the middle portion of the base is provided with the moving contact mechanism; the moving contact mechanism is formed by three moving contacts, three moving contact supports and moving contact rotation shafts; and each moving contact is provided with an arc-guiding portion for guiding the arc. The moulded-case circuit breaker is high in arc extinguishing performance, simple and convenient to use, high in safety, low in cost, high in working reliability, long in service life, small in environment influence and easy to popularize.
Description
Technical field
The present invention relates to low-voltage circuit breaker field, be specifically related to a kind of breaker of plastic casing.
Background technology
In electric product exhibition and electrical equipment market, low-voltage circuit breaker is seen everywhere, and particularly mold cased circuit breaker gains great popularity.Mold cased circuit breaker has overload long delay, short circuit wink dynamic two segment protect functions, can also with Electrical leakage, measurement, electricity to grasp etc. modular unit with the use of.In low-voltage distribution system, conventional it do limit switch or branch switch, instead of over the fuse and knife switch commonly used.
Breaker of plastic casing is also referred to as molded case circuit breaker, and breaker of plastic casing is all contained in a plastic casing by contact, arc extinguishing device, release and operating mechanism etc., does not generally consider maintenance, uses and the protection switch making branch road.Arc extinguishing device has the structure that multiple grid be arranged in parallel.The electric current produced during grid is absorbed in tripping operation, thus arc extinguishing.
But, existing common breaker of plastic casing just will enter the electric arc sub-sectional cooling effect arc extinguishing in arc extinguishing device, the electric arc of the arc extinguishing device do not entered can not good arc extinguishing, make arc quenching effect not obvious, existing circuit breaker operationally accurately can not show the situation that circuit breaker disconnects and closes simultaneously, and existing circuit breaker also exists place in circuit outlet problem needs open circuit, but functional part breaks down and can not open circuit situation, there is very large hidden danger.
Summary of the invention
In order to overcome the deficiency of background technology, the invention provides a kind of breaker of plastic casing, mainly solve existing breaker of plastic casing arc-extinguishing not strong, circuit breaker break-make situation can not be shown, the problem of cut-off breaker assembly for subsequent use is not set, this breaker of plastic casing is simple and reasonable, arc extinction performance is improved by arranging striking portion on dynamic contact mechanism, by arranging display lamp display circuit breaker break-make situation on cover, with cover button in case of emergency open circuit is set, which greatly enhances breaker of plastic casing overall performance and functional reliability, this breaker of plastic casing arc extinction performance is high, easy to use, fail safe is high, with low cost, functional reliability is high, long service life, affected by environment little, be easy to promote.
The technical solution adopted in the present invention is: a kind of breaker of plastic casing, and it comprises cover, base, dynamic contact mechanism, operating mechanism, arc control device, rotating shaft and two golden structure, and described cover and described base screw fashion are fixedly connected to form hollow structure inside; Described cover is provided with the cover button of urgent open circuit and the display lamp of display circuit break-make situation; Dynamic contact mechanism is provided with in the middle part of described base; Described dynamic contact mechanism is made up of three moving contacts, three moving contact racks and moving contact rotating shaft; Described moving contact is provided with the striking portion of pilot arc; Being provided with the operating mechanism for controlling dynamic contact mechanism action above described dynamic contact mechanism, on the left of described dynamic contact mechanism, being provided with the arc control device for arc extinguishing; Be provided with on the right side of described operating mechanism for the rotating shaft with pneumatic operating mechanism action; The two golden structure that bimetal leaf is formed is provided with on the right side of described rotating shaft; Described cover button to be positioned on the right side of described cover and above described rotating shaft; Described display lamp is positioned on the left of described cover; Described cover is provided with the spanner through hole passed through for described operating mechanism, for accelerating the air-vent moulding shell open circuit inner air flow, for the upper installing hole be fixedly connected with base and the U-shaped mouth being convenient to breaker of plastic casing wiring; Two ends, described base left and right are respectively provided with lower installing hole and binding post; Described chassis left side is provided with three long terminal blocks; Shorting stub plate is provided with on the right side of described base; Described long terminal block is provided with the flash barrier of hole and the fixed contact for matching with described moving contact; Described shorting stub plate is provided with the baffle plate of hole; Described moving contact and described fixed contact form portion of being association of activity and inertia; Described striking portion extends toward arc control device direction; Described moving contact is provided with the elastic component be connected with described moving contact rack; Described three moving contact racks are fixedly connected with by described moving contact rotating shaft; Described operating mechanism is provided with the spanner by described spanner through hole, pins the snap close of described rotating shaft, the action link rod that the tripping for described rotating shaft disengaging locking-in state is flexibly connected with described moving contact rack in addition; By multi-disc, parallel but area does not wait opening to be set in parallel in the arc extinguishing catch on both sides towards the arc extinguishing grid pieces in described portion of being association of activity and inertia and two panels to described arc control device; Described arc extinguishing grid pieces end is provided with arc extinguishing groove; Described arc control device to be positioned at above described long terminal block and on the right side of described flash barrier; Described rotating shaft is provided with the dropout plate matched with two golden structure, with the bayonet socket matched with described snap close in the middle of the interactional button panel of described cover button and rotating shaft on rear side of rotating shaft; Described bimetal leaf connects described shorting stub plate and is fixedly connected with; Described bimetal leaf and described dropout plate interact.
The invention has the beneficial effects as follows: owing to taking technique scheme, this breaker of plastic casing is simple and reasonable, arc extinction performance is improved by arranging striking portion on dynamic contact mechanism, by arranging display lamp display circuit breaker break-make situation on cover, with cover button in case of emergency open circuit is set, which greatly enhances breaker of plastic casing overall performance and functional reliability, this breaker of plastic casing arc extinction performance is high, easy to use, fail safe is high, with low cost, functional reliability is high, long service life, affected by environment little, be easy to promote.
Accompanying drawing explanation
Fig. 1 is internal structure schematic diagram of the present invention.
Fig. 2 is removal cover schematic diagram of the present invention.
Fig. 3 is overall schematic of the present invention.
Fig. 4 is dynamic contact mechanism schematic diagram of the present invention.
Fig. 5 is arc control device schematic diagram of the present invention.
Fig. 6 is operating mechanism schematic diagram of the present invention.
Fig. 7 is rotating shaft schematic diagram of the present invention.
Fig. 8 is cover schematic diagram of the present invention.
In figure 100, cover; 110, cover button; 120, display lamp; 130, spanner through hole; 140, air-vent; 150, upper installing hole; 160, U-shaped mouth; 200, base; 210, lower installing hole; 220, binding post; 230, long terminal block; 231, flash barrier; 232, fixed contact; 240, shorting stub plate; 241, baffle plate; 300, dynamic contact mechanism; 310, moving contact; 311, striking portion; 312, elastic component; 320, three moving contact racks; 330, moving contact rotating shaft; 400, operating mechanism; 410, spanner; 420, snap close; 430, tripping; 440, action link rod; 500, arc control device; 510, arc extinguishing grid pieces; 511, arc extinguishing groove; 520 arc extinguishing catch; 600, rotating shaft; 610, dropout plate; 620, button panel; 630, bayonet socket; 700, two golden structure; 710, bimetal leaf.
Embodiment
Below in conjunction with accompanying drawing, embodiments of the present invention is further illustrated:
As shown in Fig. 1 to Fig. 8, a kind of breaker of plastic casing, it comprises cover 100, base 200, dynamic contact mechanism 300, operating mechanism 400, arc control device 500, rotating shaft 600 and two golden structure 700;
Described cover 100 is fixedly connected to form hollow structure inside with described base 200 by screw fashion; Described cover 100 is provided with the cover button 110 of urgent open circuit and the display lamp 120 of display circuit break-make situation; Dynamic contact mechanism 300 is provided with in the middle part of described base 200; Described dynamic contact mechanism 300 is made up of three moving contacts, 310, three moving contact racks 320 and moving contact rotating shaft 330; Described moving contact 310 is provided with the striking portion 311 of pilot arc; Being provided with the operating mechanism 400 for controlling dynamic contact mechanism 300 action above described dynamic contact mechanism 300, on the left of described dynamic contact mechanism 300, being provided with the arc control device 500 for arc extinguishing; Be provided with on the right side of described operating mechanism 400 for the rotating shaft 600 with pneumatic operating mechanism 400 action; The two golden structure 700 that bimetal leaf 710 is formed is provided with on the right side of described rotating shaft 600;
Described cover button 110 to be positioned on the right side of described cover 100 and above described rotating shaft 600; Described display lamp 120 is positioned on the left of described cover 100; Described cover 100 is provided with the spanner through hole 130 passed through for described operating mechanism 400, for accelerating the air-vent 140 moulding shell open circuit inner air flow, for the upper installing hole 150 be fixedly connected with base and the U-shaped mouth 160 being convenient to breaker of plastic casing wiring;
Described base about 200 two ends are respectively provided with lower installing hole 210 and binding post 220; Described chassis left side is provided with three long terminal blocks 230; Shorting stub plate 240 is provided with on the right side of described base;
Described long terminal block 230 is provided with the flash barrier 231 of hole and the fixed contact 232 for matching with described moving contact; Described shorting stub plate 240 is provided with the baffle plate 241 of hole;
Described moving contact 310 forms with described fixed contact 232 portion of being association of activity and inertia; Described striking portion 311 extends toward arc control device 500 direction; Described moving contact 310 is provided with the elastic component 312 be connected with described moving contact rack 320; Described three moving contact racks 320 are fixedly connected with by described moving contact rotating shaft 330;
Described operating mechanism 400 is provided with the spanner 410 by described spanner through hole 130, pins the snap close 420 of described rotating shaft 600, the action link rod 440 that the tripping 430 departing from locking-in state for described rotating shaft 600 is flexibly connected with described moving contact rack 320 in addition;
By multi-disc, parallel but area does not wait opening to be set in parallel in the arc extinguishing catch 520 on both sides towards the arc extinguishing grid pieces 510 in described portion of being association of activity and inertia and two panels to described arc control device 500; Described arc extinguishing grid pieces 510 end is provided with arc extinguishing groove 511; Described arc control device 500 to be positioned at above described long terminal block 230 and on the right side of described flash barrier 231;
Described rotating shaft 600 is provided with the dropout plate 610 matched with two golden structure 700, with the bayonet socket 630 matched with described snap close 420 in the middle of the interactional button panel of described cover button 110 620 and rotating shaft 600 on rear side of rotating shaft 600;
Described bimetal leaf 710 connects described shorting stub plate 240 and is fixedly connected with; Described bimetal leaf 710 interacts with described dropout plate 610.
Its course of work is as described below: when the spanner 410 of operating mechanism 400 described on breaker of plastic casing is in closed, it is closed that described action link rod 440 makes described moving contact 310 contact with described fixed contact 232, make closing of circuit, closed moment, described display lamp 120 lights until circuit disconnects, bayonet socket 630 in described rotating shaft 600 is simultaneously pinned by described snap close 420, and circuit is kept closed;
When circuit be short-circuited or big current time, described two golden structure 700 is heated to described dropout plate 610 and is bent, dropout plate 610 drives rotating shaft 600 to rotate disengaging locking-in state, described tripping 430 and action link rod 440 action, moving contact 310 is separated with fixed contact 232, and circuit disconnects, and display lamp 120 extinguishes, and by striking portion 311, electric arc is introduced in arc control device 500 in the moment disconnected, arc control device 500 are by electric arc sub-sectional cooling arc extinguishing;
When the action of described spanner 410 changes off-state into from closure state, the action of operating mechanism 400 makes dynamic contact mechanism 300 action, and circuit is disconnected, and in the electric arc introducing arc control device 500 that disconnection produces by striking portion 311 instantaneously, the while of arc extinguishing, display lamp 120 extinguishes; If occur two golden structure 700 and spanner 410 all cannot open circuit time, press described cover button 110, described rotating shaft 600 action, make operating mechanism 400 action drive dynamic contact mechanism 300 action, finally make circuit disconnect, the electric arc of generation also enters in arc control device 500.
Every technical staff's notice: although the present invention describes according to above-mentioned embodiment, invention thought of the present invention is not limited in this invention, and the repacking of any utilization inventive concept, all will include in this patent scope of patent protection.
Claims (9)
1. a breaker of plastic casing, comprises cover, base, dynamic contact mechanism, operating mechanism, arc control device, rotating shaft and two golden structure, it is characterized in that: described cover and described base screw fashion are fixedly connected to form hollow structure inside; Described cover is provided with the cover button of urgent open circuit and the display lamp of display circuit break-make situation; Dynamic contact mechanism is provided with in the middle part of described base; Described dynamic contact mechanism is made up of three moving contacts, three moving contact racks and moving contact rotating shaft; Described moving contact is provided with the striking portion of pilot arc; Being provided with the operating mechanism for controlling dynamic contact mechanism action above described dynamic contact mechanism, on the left of described dynamic contact mechanism, being provided with the arc control device for arc extinguishing; Be provided with on the right side of described operating mechanism for the rotating shaft with pneumatic operating mechanism action; The two golden structure that bimetal leaf is formed is provided with on the right side of described rotating shaft.
2. breaker of plastic casing according to claim 1, is characterized in that: described cover button to be positioned on the right side of described cover and above described rotating shaft; Described display lamp is positioned on the left of described cover; Described cover is provided with the spanner through hole passed through for described operating mechanism, for accelerating the air-vent moulding shell open circuit inner air flow, for the upper installing hole be fixedly connected with base and the U-shaped mouth being convenient to breaker of plastic casing wiring.
3. breaker of plastic casing according to claim 1, is characterized in that: two ends, described base left and right are respectively provided with lower installing hole and binding post; Described chassis left side is provided with three long terminal blocks; Shorting stub plate is provided with on the right side of described base.
4. breaker of plastic casing according to claim 3, is characterized in that: described long terminal block is provided with the flash barrier of hole and the fixed contact for matching with described moving contact; Described shorting stub plate is provided with the baffle plate of hole.
5. the breaker of plastic casing according to claim 1 or 4, is characterized in that: described moving contact and described fixed contact form portion of being association of activity and inertia; Described striking portion extends toward arc control device direction; Described moving contact is provided with the elastic component be connected with described moving contact rack; Described three moving contact racks are fixedly connected with by described moving contact rotating shaft.
6. breaker of plastic casing according to claim 1 and 2, it is characterized in that: described operating mechanism is provided with the spanner by described spanner through hole, pin the snap close of described rotating shaft, the action link rod that the tripping for described rotating shaft disengaging locking-in state is flexibly connected with described moving contact rack in addition.
7. breaker of plastic casing according to claim 1 or 5, is characterized in that: by multi-disc, parallel but area does not wait opening to be set in parallel in the arc extinguishing catch on both sides towards the arc extinguishing grid pieces in described portion of being association of activity and inertia and two panels to described arc control device; Described arc extinguishing grid pieces end is provided with arc extinguishing groove; Described arc control device to be positioned at above described long terminal block and on the right side of described flash barrier.
8. breaker of plastic casing according to claim 1, is characterized in that: described rotating shaft is provided with the dropout plate matched with two golden structure, with the bayonet socket matched with described snap close in the middle of the interactional button panel of described cover button and rotating shaft on rear side of rotating shaft.
9. the breaker of plastic casing according to claim 1 or 3, is characterized in that: described bimetal leaf connects described shorting stub plate and is fixedly connected with; Described bimetal leaf and described dropout plate interact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510711233.7A CN105244241B (en) | 2015-10-28 | 2015-10-28 | Breaker of plastic casing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510711233.7A CN105244241B (en) | 2015-10-28 | 2015-10-28 | Breaker of plastic casing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105244241A true CN105244241A (en) | 2016-01-13 |
| CN105244241B CN105244241B (en) | 2017-08-04 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510711233.7A Active CN105244241B (en) | 2015-10-28 | 2015-10-28 | Breaker of plastic casing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105244241B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4679016A (en) * | 1986-01-08 | 1987-07-07 | General Electric Company | Interchangeable mechanism for molded case circuit breaker |
| CN2333086Y (en) * | 1997-12-29 | 1999-08-11 | 浙江东华电器厂 | Intelligent plastic hull breaker |
| CN2888637Y (en) * | 2005-09-07 | 2007-04-11 | 向永川 | Multifunctional switch |
| CN101188178A (en) * | 2007-11-30 | 2008-05-28 | 赵建清 | Electric leakage current breaker |
| CN204516709U (en) * | 2015-04-21 | 2015-07-29 | 常安集团有限公司 | Breaker of plastic casing |
| CN205092209U (en) * | 2015-10-28 | 2016-03-16 | 浙江爱德利电器股份有限公司 | Moulded case circuit breaker |
-
2015
- 2015-10-28 CN CN201510711233.7A patent/CN105244241B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4679016A (en) * | 1986-01-08 | 1987-07-07 | General Electric Company | Interchangeable mechanism for molded case circuit breaker |
| CN2333086Y (en) * | 1997-12-29 | 1999-08-11 | 浙江东华电器厂 | Intelligent plastic hull breaker |
| CN2888637Y (en) * | 2005-09-07 | 2007-04-11 | 向永川 | Multifunctional switch |
| CN101188178A (en) * | 2007-11-30 | 2008-05-28 | 赵建清 | Electric leakage current breaker |
| CN204516709U (en) * | 2015-04-21 | 2015-07-29 | 常安集团有限公司 | Breaker of plastic casing |
| CN205092209U (en) * | 2015-10-28 | 2016-03-16 | 浙江爱德利电器股份有限公司 | Moulded case circuit breaker |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105244241B (en) | 2017-08-04 |
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| CB02 | Change of applicant information |
Address after: Xinguang Road Xinguang industrial zone of Liushi town of Yueqing City, Zhejiang province 325600 No. 122 Building No. 1 Applicant after: Zhejiang love Polytron Technologies Inc Address before: 325600, Zhejiang, Wenzhou province Yueqing city on the top of the Ao Ao group building Applicant before: ZHEJIANG AIDELI ELECTRICAL APPLIANCE CO., LTD. |
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