CN105023818A - Double-break circuit breaker - Google Patents
Double-break circuit breaker Download PDFInfo
- Publication number
- CN105023818A CN105023818A CN201510488078.7A CN201510488078A CN105023818A CN 105023818 A CN105023818 A CN 105023818A CN 201510488078 A CN201510488078 A CN 201510488078A CN 105023818 A CN105023818 A CN 105023818A
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- CN
- China
- Prior art keywords
- contacts
- rotating shaft
- fixed
- moving
- double
- 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.)
- Pending
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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
- H01H73/045—Bridging contacts
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- Breakers (AREA)
Abstract
The invention discloses a double-break circuit breaker comprising a shell which is internally provided with a rotating shaft and a tripping mechanism which is used for driving the rotating shaft to rotate. The shell is also internally provided with multiple sets of double-break structures. Each set of double-break structure comprises two static contacts and two moving contacts. The two moving contacts are arranged side by side. The position, which is corresponding to each set of double-break structure, of the rotating shaft is provided with a concave cavity. One end of each of the two moving contacts stretches into the concave cavity of the rotating shaft. The end parts of the ends, which are positioned in the concave cavity of the rotating shaft, of the two moving contacts are electrically connected via a flexible conductive member. A moving contact point is fixed on the other end, which is positioned outside the concave cavity of the rotating shaft, of each of the two moving contacts. A static contact point is fixed on the internal ends of the two static contacts respectively. One-to-one correspondence suction closing can be formed by the two moving contact points on the two moving contacts and the two static contact points on the two static contacts. With application of the aforementioned arrangement, the invention provides the double-break circuit breaker which can effectively enhance breaking capacity without increasing the size of the shell of the circuit breaker.
Description
Technical field
The present invention relates to a kind of circuit breaker, be specifically related to a kind of dual-interruption point breaker.
Background technology
Dual-interruption point breaker is a kind of circuit breaker with double-breakpoint structure, in the prior art, this double-breakpoint structure is as described in document CN201010210945.8, all the moving contact and two fixed contacts that include a strip, each fixed contact is provided with a fixed contact, two moving contacts that can form one_to_one corresponding adhesive with two fixed contacts are then separately positioned on the end, two ends of this strip moving contact, such vibrational power flow, for taking into account the dynamic of two ends, fixed contact can effectively folding, the actual clearance between open contacts of circuit breaker is less, breaking arc will be difficult to especially when this circuit breaker is applied in DC circuit, and to keep larger clearance between open contacts, then that certainly will be done by the housing of circuit breaker again is very large, considerably increase production cost so again.
Summary of the invention
For the deficiencies in the prior art, the dual-interruption point breaker of breaking capacity under the invention provides a kind of prerequisite not increasing Shell of circuit breaker volume, effectively can be improved.
For achieving the above object, the invention provides a kind of dual-interruption point breaker, include housing, rotating shaft and the tripping mechanism for driving described rotating shaft to rotate is equiped with in described housing, also be provided with in described housing and organize double-breakpoint structure more, often organize double-breakpoint structure and include two fixed contacts and two moving contacts, two described moving contacts are in being arranged side by side, in described rotating shaft, correspondence is often organized double-breakpoint structure and is provided with a cavity, one end of two moving contacts is all stretched in the cavity of described rotating shaft, and be hingedly fixed on the cavity of rotating shaft by a support bar, each moving contact is provided with an independently pressure torsion spring, described pressure torsion spring is all set on support bar, by a soft electric-conductor electrical connection between two moving contacts this end end in rotating shaft cavity, two moving contacts are positioned on the other end outside rotating shaft cavity and are all fixed with a moving contact, the inner of two fixed contacts is all fixed with a fixed contact, two moving contacts on two moving contacts and two fixed contacts on two fixed contacts can form one_to_one corresponding adhesive, the outer end of two fixed contacts extends in opposite direction, one of them fixed contact is provided with the thermal source part be connected with tripping mechanism.
The invention has the beneficial effects as follows: due to adopted in the present invention be two moving contacts be arranged side by side, one end of each moving contact is provided with a moving contact, and by soft electric-conductor electrical connection formation U-shaped entirety between the other end of two moving contacts, therefore the one end moving contact on moving contact and the fixed contact on fixed contact all being concentrated on Shell of circuit breaker is equaled like this, thus the clearance between open contacts between moving contact and fixed contact is increased, and then also just make circuit breaker easily break electric arc, greatly improve the breaking capacity of circuit breaker, and arrange like this, the volume of Shell of circuit breaker can also be made to reduce further, effectively reduce production cost.
Also be provided with for by separated for the middle part of two moving contacts block in the cavity that the present invention can be set to described rotating shaft further.
By the setting of above-mentioned block, effectively can guarantee that other part all risk insurances hold separated position, thus effectively guarantee to keep certain coverage between two moving contacts between two moving contacts except being connected by soft electric-conductor.
It is electric lead or metallic conduction sheet that the present invention also can be set to described soft electric-conductor further.
The present invention also can be set to each moving contact further and be provided with between the inner that this end of moving contact and each fixed contact be provided with fixed contact and be equipped with independently arc control device.
By the setting of above-mentioned arc control device, the arc quenching effect of circuit breaker greatly can be promoted.
The inner that the present invention also can be set to described fixed contact further bending that takes the shape of the letter U is arranged, and a wherein side of U-shaped the inner offers blocked hole, in described housing, correspondence is provided with the fixture block connected and fixed mutually with described blocked hole, and described fixed contact is arranged on another side outer surface of U-shaped the inner.
Adopt said structure, a wherein side of described fixed contact U-shaped the inner offers blocked hole, and the fixture block that corresponding setting connects and fixes mutually with described blocked hole in described housing, fixed contact can be convenient to and be mounted with on housing; And described fixed contact is arranged on another side outer surface of U-shaped the inner, like this when disjunction, be convenient to moving contact and flick, thus improve the breaking capacity of circuit breaker further.
Accompanying drawing explanation
Fig. 1 is structural blast figure of the present invention;
Fig. 2 is local structural graph of the present invention;
Fig. 3 is local structural graph of the present invention;
Fig. 4 is local structural graph of the present invention;
Fig. 5 is local structural graph of the present invention;
Fig. 6 is the another kind of structure chart of the present invention.
Embodiment
A kind of dual-interruption point breaker of the two poles of the earth is given as shown in Fig. 1,2,3,4,5, include housing 1, be equiped with rotating shaft 2 and the tripping mechanism 3 for driving described rotating shaft 2 to rotate in described housing 1, described tripping mechanism 3 is prior art, does not just repeat here.In described housing 1, correspondence is provided with two groups of double-breakpoint structures, often organize double-breakpoint structure and include two fixed contacts 4 and two moving contacts 5, two described moving contacts 5 are in being arranged side by side, in described rotating shaft 2, correspondence is often organized double-breakpoint structure and is provided with a cavity 21, one end 51 of two moving contacts 5 is all stretched in the cavity 21 of described rotating shaft 2, and be hingedly fixed on the cavity 21 of rotating shaft 2 by a support bar 6, each moving contact 5 is provided with an independently pressure torsion spring 7, described pressure torsion spring 7 is all set on support bar 6, also be provided with for by separated for the middle part of two moving contacts 5 block 22 in the cavity 21 of described rotating shaft 2, two moving contacts 5 are electrically connected by a soft electric-conductor 8 between this end 51 end in rotating shaft cavity 21, described soft electric-conductor 8 is electric lead or metallic conduction sheet.Two moving contacts 5 are positioned on the other end 52 outside rotating shaft cavity 21 and are all fixed with a moving contact 53, the inner 41 of two fixed contacts 4 is all fixed with a fixed contact 42, two moving contacts 53 on two moving contacts 5 and two fixed contacts 42 on two fixed contacts 4 can form one_to_one corresponding adhesive, the outer end 43 of two fixed contacts 4 extends in opposite direction, and one of them fixed contact 4 is provided with the thermal source part 11 be connected with tripping mechanism 3.Each moving contact 5 is provided with between the inner 41 that this end 52 of moving contact 53 and each fixed contact 4 be provided with fixed contact 42 and is equipped with independently arc control device 9.The inner 41 of described fixed contact 4 takes the shape of the letter U to bend and arranges, and a wherein side of U-shaped the inner 41 offers blocked hole 411, in described housing 1, correspondence is provided with the fixture block connected and fixed mutually with described blocked hole 411, and described fixed contact 42 is arranged on another side outer surface of U-shaped the inner 41.
Due to adopted in the present invention be two moving contacts be arranged side by side 5, one end 52 of each moving contact 5 is provided with a moving contact 53, and be electrically connected formation U-shaped entirety by soft electric-conductor 8 between the other end 51 of two moving contacts 5, therefore the one end moving contact 53 on moving contact 5 and the fixed contact 42 on fixed contact 4 all being concentrated on Shell of circuit breaker 1 is equaled like this, thus the clearance between open contacts between moving contact 5 and fixed contact 4 is increased, and then also just make circuit breaker easily break electric arc, greatly improve the breaking capacity of circuit breaker, and arrange like this, the volume of Shell of circuit breaker can also be made to reduce further, effectively reduce production cost.
Certainly as shown in Figure 6, described dual-interruption point breaker can also be a kind of dual-interruption point breaker of three poles, namely three groups of double-breakpoint structures are included in described Shell of circuit breaker 1, but for guaranteeing that circuit breaker and external circuit or two enter the mode of connection of scene 2, the fixed contact wherein in two groups of double-breakpoint structures will be linked together by a U-shaped electricity sheet 10.
Claims (5)
1. a dual-interruption point breaker, include housing, rotating shaft and the tripping mechanism for driving described rotating shaft to rotate is equiped with in described housing, also be provided with in described housing and organize double-breakpoint structure more, it is characterized in that: often organize double-breakpoint structure and included two fixed contacts and two moving contacts, two described moving contacts are in being arranged side by side, in described rotating shaft, correspondence is often organized double-breakpoint structure and is provided with a cavity, one end of two moving contacts is all stretched in the cavity of described rotating shaft, and be hingedly fixed on the cavity of rotating shaft by a support bar, each moving contact is provided with an independently pressure torsion spring, described pressure torsion spring is all set on support bar, by a soft electric-conductor electrical connection between two moving contacts this end end in rotating shaft cavity, two moving contacts are positioned on the other end outside rotating shaft cavity and are all fixed with a moving contact, the inner of two fixed contacts is all fixed with a fixed contact, two moving contacts on two moving contacts and two fixed contacts on two fixed contacts can form one_to_one corresponding adhesive, the outer end of two fixed contacts extends in opposite direction, one of them fixed contact is provided with the thermal source part be connected with tripping mechanism.
2. dual-interruption point breaker according to claim 1, is characterized in that: be also provided with for by separated for the middle part of two moving contacts block in the cavity of described rotating shaft.
3. dual-interruption point breaker according to claim 1, is characterized in that: described soft electric-conductor is electric lead or metallic conduction sheet.
4. dual-interruption point breaker according to claim 1, is characterized in that: each moving contact is provided with between the inner that this end of moving contact and each fixed contact be provided with fixed contact and is equipped with independently arc control device.
5. dual-interruption point breaker according to claim 1, it is characterized in that: the inner of described fixed contact takes the shape of the letter U to bend and arranges, and a wherein side of U-shaped the inner offers blocked hole, in described housing, correspondence is provided with the fixture block connected and fixed mutually with described blocked hole, and described fixed contact is arranged on another side outer surface of U-shaped the inner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510488078.7A CN105023818A (en) | 2015-08-11 | 2015-08-11 | Double-break circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510488078.7A CN105023818A (en) | 2015-08-11 | 2015-08-11 | Double-break circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105023818A true CN105023818A (en) | 2015-11-04 |
Family
ID=54413702
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510488078.7A Pending CN105023818A (en) | 2015-08-11 | 2015-08-11 | Double-break circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105023818A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101582353A (en) * | 2009-06-08 | 2009-11-18 | 常熟开关制造有限公司(原常熟开关厂） | Electromagnetic short current protective mechanism for breaker |
| CN201359982Y (en) * | 2009-02-26 | 2009-12-09 | 常熟开关制造有限公司(原常熟开关厂） | Multi-pole low-voltage rotation double-break molded case circuit breaker |
| US20130199912A1 (en) * | 2012-02-03 | 2013-08-08 | Abb S.P.A. | Hybrid current switching device |
| CN203277271U (en) * | 2013-03-07 | 2013-11-06 | 上海良信电器股份有限公司 | Moving contact system for circuit breaker |
| CN104505308A (en) * | 2014-12-10 | 2015-04-08 | 上海电器科学研究院 | Double-breakpoint molded case circuit breaker |
| CN204809174U (en) * | 2015-08-11 | 2015-11-25 | 浙江奔一电气有限公司 | Double break point circuit breaker |
-
2015
- 2015-08-11 CN CN201510488078.7A patent/CN105023818A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201359982Y (en) * | 2009-02-26 | 2009-12-09 | 常熟开关制造有限公司(原常熟开关厂） | Multi-pole low-voltage rotation double-break molded case circuit breaker |
| CN101582353A (en) * | 2009-06-08 | 2009-11-18 | 常熟开关制造有限公司(原常熟开关厂） | Electromagnetic short current protective mechanism for breaker |
| US20130199912A1 (en) * | 2012-02-03 | 2013-08-08 | Abb S.P.A. | Hybrid current switching device |
| CN203277271U (en) * | 2013-03-07 | 2013-11-06 | 上海良信电器股份有限公司 | Moving contact system for circuit breaker |
| CN104505308A (en) * | 2014-12-10 | 2015-04-08 | 上海电器科学研究院 | Double-breakpoint molded case circuit breaker |
| CN204809174U (en) * | 2015-08-11 | 2015-11-25 | 浙江奔一电气有限公司 | Double break point circuit breaker |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20151104 |