CN101989517A - Double-break moving contact system of molded case circuit breaker - Google Patents
Double-break moving contact system of molded case circuit breaker Download PDFInfo
- Publication number
- CN101989517A CN101989517A CN 201010568008 CN201010568008A CN101989517A CN 101989517 A CN101989517 A CN 101989517A CN 201010568008 CN201010568008 CN 201010568008 CN 201010568008 A CN201010568008 A CN 201010568008A CN 101989517 A CN101989517 A CN 101989517A
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- Prior art keywords
- moving contact
- double
- supporter
- circuit breaker
- contact system
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- 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.)
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Abstract
The invention discloses a double-break moving contact system of molded case circuit breaker, which comprises a supporter, and a moving contact and double torsional springs inside the supporter. The double torsional springs are positioned inside a groove in the supporter and are clamped at two ends of the moving contact. The double-break moving contact system of molded case circuit breaker has simple structure, low cost, reliable movement, less parts and high integral reliability. Limitation, namely current limitation, can be applied to the increase of short circuit current by means of own accelerated rotation of the moving contact.
Description
Technical field: the present invention relates to a kind of moving contact system, especially a kind of double break crawl contact system that is applied on the circuit breaker.
Background technology: the present double break crawl contact system on circuit breaker, structure is very complicated, cost height, and reliability is low, closed again situation after might occurring disconnecting.
Summary of the invention: at above-mentioned the deficiencies in the prior art, the invention provides a kind of simple in structure, the moving contact system of the breaker of plastic casing double break point that reliability is high.
For achieving the above object, the technical solution used in the present invention is: the moving contact system of breaker of plastic casing double break point comprises supporter and is in supporter interior moving contact, torsion spring.Torsion spring is in the interior groove of supporter, and is stuck in the two ends of moving contact.
The present invention is simple in structure, and cost is low.Reliable in action, part is few, the global reliability height.Rely on the acceleration of moving contact self to rotatablely move, can the growth of short circuit current be provided constraints, i.e. metering function.
Description of drawings:
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the perspective view of another angle of the present invention
Fig. 3 is the fundamental diagram of moving contact conducting state.
Fig. 4 is the fundamental diagram of moving contact off-state.
Embodiment:
As depicted in figs. 1 and 2: the moving contact system of breaker of plastic casing double break point comprises supporter 2 and the moving contact 1, the torsion spring 3 that are in the supporter 2.Torsion spring 3 is in the groove in the supporter 2, and is stuck in the two ends of moving contact 1.
Operation principle:
When prospective short circuit current I flows through moving contact, between the contact-making surface of dynamic/static contact, produce electrodynamic repulsion force F, this repulsion F makes moving contact produce as shown in Figure 3, and direction rotatablely moves, when moving contact rotates through the dead point of torsion spring, moving contact is by the torsional moment of torsion spring, continue as shown in Figure 4, to open fully up to moving contact by original direction motion.
Claims (1)
1. the moving contact system of breaker of plastic casing double break point comprises supporter and is in supporter interior moving contact, torsion spring; Torsion spring is in the interior groove of supporter, and is stuck in the two ends of moving contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010568008 CN101989517A (en) | 2010-12-01 | 2010-12-01 | Double-break moving contact system of molded case circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010568008 CN101989517A (en) | 2010-12-01 | 2010-12-01 | Double-break moving contact system of molded case circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101989517A true CN101989517A (en) | 2011-03-23 |
Family
ID=43745998
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010568008 Pending CN101989517A (en) | 2010-12-01 | 2010-12-01 | Double-break moving contact system of molded case circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101989517A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102403172A (en) * | 2011-11-21 | 2012-04-04 | 科都电气有限公司 | Double breakpoint moving contact system and molded case circuit breaker using same |
| CN107026059A (en) * | 2017-06-10 | 2017-08-08 | 南京日新科技有限公司 | A kind of multibreak circuit breaker |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1071785A (en) * | 1991-10-15 | 1993-05-05 | 梅兰日兰公司 | Multipole circuit breaker with single pole units |
| US5310971A (en) * | 1992-03-13 | 1994-05-10 | Merlin Gerin | Molded case circuit breaker with contact bridge slowed down at the end of repulsion travel |
| CN1388547A (en) * | 2001-05-28 | 2003-01-01 | 富士电机株式会社 | Moulded box circuit breaker |
| CN201562647U (en) * | 2009-12-09 | 2010-08-25 | 上海诺雅克电气有限公司 | Automatic closing contact device of circuit breaker with high breaking capability |
| CN201898105U (en) * | 2010-12-01 | 2011-07-13 | 沈阳斯沃电器有限公司 | Double-breakpoint movable contact terminal device of molded case circuit breaker |
-
2010
- 2010-12-01 CN CN 201010568008 patent/CN101989517A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1071785A (en) * | 1991-10-15 | 1993-05-05 | 梅兰日兰公司 | Multipole circuit breaker with single pole units |
| US5310971A (en) * | 1992-03-13 | 1994-05-10 | Merlin Gerin | Molded case circuit breaker with contact bridge slowed down at the end of repulsion travel |
| CN1388547A (en) * | 2001-05-28 | 2003-01-01 | 富士电机株式会社 | Moulded box circuit breaker |
| CN201562647U (en) * | 2009-12-09 | 2010-08-25 | 上海诺雅克电气有限公司 | Automatic closing contact device of circuit breaker with high breaking capability |
| CN201898105U (en) * | 2010-12-01 | 2011-07-13 | 沈阳斯沃电器有限公司 | Double-breakpoint movable contact terminal device of molded case circuit breaker |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102403172A (en) * | 2011-11-21 | 2012-04-04 | 科都电气有限公司 | Double breakpoint moving contact system and molded case circuit breaker using same |
| CN102403172B (en) * | 2011-11-21 | 2014-06-25 | 科都电气有限公司 | Double breakpoint moving contact system and molded case circuit breaker using same |
| CN107026059A (en) * | 2017-06-10 | 2017-08-08 | 南京日新科技有限公司 | A kind of multibreak circuit breaker |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110323 |