CN102760621A - Circuit breaker capable of improving breaking capacity - Google Patents
Circuit breaker capable of improving breaking capacity Download PDFInfo
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- CN102760621A CN102760621A CN2012100932346A CN201210093234A CN102760621A CN 102760621 A CN102760621 A CN 102760621A CN 2012100932346 A CN2012100932346 A CN 2012100932346A CN 201210093234 A CN201210093234 A CN 201210093234A CN 102760621 A CN102760621 A CN 102760621A
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- circuit breaker
- breaking capacity
- striking sheet
- capacity according
- improve breaking
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Abstract
The invention relates to a circuit breaker capable of improving the breaking capacity. The circuit breaker comprises a circuit breaker body, wherein the circuit breaker body comprises a shell, and a wire incoming end, a wire outgoing end and an actuating mechanism which are arranged in the shell, wherein the actuating mechanism is used for realizing an on-off state of the circuit breaker body; and the circuit breaker body further comprises an arc striking plate which is positioned at the lower part of the actuating mechanism, an extending section is arranged at the bending part of the arc striking plate, and the arc striking plate is formed by welding a second arc striking plate part and a second arc striking plate part, wherein the resistance value of the first arc striking plate part is higher that of the second arc striking plate part.
Description
Technical field
The present invention relates to a kind of circuit breaker, particularly a kind ofly can improve circuit breaker produces the current value ability of the action institute striking of opening circuit when short trouble takes place technological improvement.
Background technology
For power department, the switch switchgear is to guarantee Electrical Safety, carry out circuit and switch imperative equipment, and its internal structure of existing circuit breaker sees also shown in Figure 1, and Figure 1A is the cutaway view of existing circuit breaker; It comprises: a housing 10, and adopt the insulation fire proofing to make, portion is provided with following structure within it:
One end of incoming cables 131 and a leading-out terminal 132 are in order to be linked in the power line; One actuating mechanism, it comprises: one handle 11, it has an operating side and is arranged at outside the described housing 10, carries out the break-make control of circuit; One movable contact spring 121, its end has a moving contact; One interlock controll block group 12; It is made up of a plurality of STATEMENT OF FEDERALLY SPONSORED; Axle through being arranged in the said housing 10 rotates, and an end of the STATEMENT OF FEDERALLY SPONSORED that it is gone up most is connected with described handle 11, and the end of bottom STATEMENT OF FEDERALLY SPONSORED is connected with the front end of described movable contact spring 121; One fixed contact 122; It is connected with described end of incoming cables 131; When the described interlock controll block group 12 of turn handle 11 pulling, thus cause moving contact and fixed contact deciliter, can realize among the application that the circuit breaker of basic on-off function is referred to as breaker body.
Also comprise a short circuit detecting mechanism, when short trouble produced, it produced a trigger action, and it comprises:
One iron core 4; It is positioned at described housing 10; It is corresponding with the end interlock controll block in the said interlock controll block group 12 through an angled slide block, and when short circuit took place, the high-intensity magnetic field of generation attracted described iron core motion; Thereby, thereby make described breaker body produce the action of opening circuit through the interlock of the end in the said interlock controll block of described angled slide block pushing tow group controll block; Also comprise: a back-moving spring, after breaker body produced the action of opening circuit, outage caused that magnetic field disappears, thus described back-moving spring removes that with so that described iron core resets said terminal interlock controll block is leaned action.
Also comprise: a short-circuit self-locking mechanism, when producing short trouble, it makes described circuit breaker be in self-locking state, if the user does not remove self-locking state, then breaker body can't normally close a floodgate, described short-circuit self-locking mechanism comprises:
One hook-type triggers part 31, and it is coupling in described housing 10, can form around the rotating shaft of correspondence to rotate;
One from the lock section 32, and it triggers part 31 clasp joint mutually with described hook-type, and comprises a compression spring 321, and described upper end from lock section 32 is corresponding with the hole on the said housing 10; Described 32 have a retaining and support end from the lock section, and its extension with described handle 11 is corresponding.
Also comprise: a bimetal leaf 51; It is connected with first lead of described leading-out terminal 132; The one of which end is connected with described terminal interlock controll block; When temperature is too high, thereby 51 bendings of described bimetal leaf make the action of described terminal interlock controll block, and then make described breaker body produce the action of opening circuit.
Also comprise: an arc-extinguish chamber 41 sees also shown in Figure 1B in order to eliminate the destruction of electric arc to circuit breaker, and it mainly is the displaying of carrying out to the metal striking sheet 2 among Figure 1A, and it has the bottom that a smooth section extends to described arc-extinguish chamber 41 described striking sheet 2.
But existing circuit breaker still exists in short trouble when taking place, and breaker body sound contact separation causes arc light that the device of enclosure interior is caused the defective of burn, and promptly breaking capacity is low.
In view of above-mentioned defective, creator of the present invention has obtained this creation finally through long term studies and test.
Summary of the invention
The objective of the invention is to, a kind of circuit breaker that can improve breaking capacity is provided, in order to overcome the existing low defective of circuit breaker breaking capacity.
For realizing that the technical scheme that above-mentioned purpose the present invention adopts is; A kind of circuit breaker that can improve breaking capacity is provided; It comprises: a breaker body, and wherein said breaker body comprises: a housing, and place an end of incoming cables, a leading-out terminal and an actuating mechanism in the said housing; Wherein, described actuating mechanism realizes the on off operating mode of described breaker body; Also comprise: a striking sheet; It is positioned at the bottom of described actuating mechanism; Described striking sheet has an extension in its bending place; It is characterized in that described striking sheet is partly to be welded by the first striking sheet part and the second striking sheet, the resistance of wherein said first striking sheet part is higher than the resistance of second striking sheet part.
Wherein, the described first striking sheet partly is positioned at the end of incoming cables.
Preferable, described extension length is 2 millimeters～7 millimeters.
Wherein, described actuating mechanism comprises:
One handle, it has an operating side and is arranged at outside the described housing, realizes the break-make control of power line through stirring said handle;
One movable contact spring, its end has a moving contact, and it is connected with first lead of being introduced by described leading-out terminal;
One interlock controll block group, it is made up of a plurality of interlock controll blocks, through being hinged and connected, comprising: an end of one first interlock controll block is connected with described handle, and a link end of controll block of an end is connected with the front end of described movable contact spring;
One static contact, it is connected with second lead of being introduced by described end of incoming cables.
Preferable, the center vertical line of described moving contact is between described extension end and described static contact.
Preferable, also comprise a short circuit detecting mechanism, when short trouble produced, it produced a trigger action, and it comprises:
One iron core produces action through the described interlock controll block of its motion triggers group;
One back-moving spring, its with so that described iron core reset.
Preferable, also comprise: a short-circuit self-locking mechanism, when producing short trouble, it makes described circuit breaker be in self-locking state, and it comprises:
One hook-type triggers part, and it is coupling in described housing;
One from the lock section, and it triggers part clasp joint mutually with described hook-type, and comprises a compression spring, and described upper end from the lock section is corresponding with the hole on the said housing; Described have a retaining to end from the lock section, its extension with described handle is corresponding.
Preferable, also comprise: an arc-extinguish chamber, it places described short circuit detecting mechanism bottom, and it is to be cascaded by some arc extinguishing boards, and the smooth section that described striking sheet has extends to described arc-extinguish chamber bottom.
Wherein, arc extinguishing board is a tabular one of in the said arc-extinguish chamber, and extends an extension to described static contact place.
Wherein, the extension length of described said tabular arc extinguishing board is 1 millimeter～15 millimeters.
Preferable, the extension length of described tabular arc extinguishing board is 2 millimeters～4 millimeters.
Preferable; Also comprise: a bimetal leaf; It is connected with first lead of described leading-out terminal, and the one of which end is connected with described terminal interlock controll block, when temperature is too high; Make the action of described terminal interlock controll block thereby described bimetal leaf is crooked, and then make described breaker body produce the action of opening circuit.
Compare with prior art, beneficial effect of the present invention is, the breaking capacity of breaker body is provided when short trouble takes place.
Description of drawings
Figure 1A is the cutaway view of existing circuit breaker;
Figure 1B is the enlarged diagram of local A among Figure 1A;
Fig. 2 A can improve the structural representation of the striking sheet in the circuit breaker of breaking capacity for the present invention;
Fig. 2 B can improve the structural representation of the circuit breaker preferred embodiment one of breaking capacity for the present invention;
Fig. 2 C is the enlarged diagram of local B among Fig. 2 B;
Fig. 2 D can improve the structural representation of the circuit breaker preferred embodiment two of breaking capacity for the present invention;
Fig. 2 E can improve arc-extinguish chamber sketch map in the circuit breaker preferred embodiment two of breaking capacity for the present invention.
Embodiment
Below in conjunction with accompanying drawing, do more detailed explanation with other technical characterictic and advantage to the present invention is above-mentioned.
See also shown in Fig. 2 A, it can improve the structural representation of the circuit breaker striking sheet of breaking capacity for the present invention; Compare with striking sheet 2 of the prior art, described striking sheet is to be welded by the first striking sheet part 23 and the second striking sheet part 22, and the resistance of the wherein said first striking sheet part 23 is higher than the resistance of the second striking sheet part 22.The described first striking sheet part 23 is positioned at the end of incoming cables.
See also shown in Fig. 2 B, it can improve the structural representation of the circuit breaker of breaking capacity for the present invention; Because described striking sheet 2 has produced extension 21, thereby makes when failed because, moving contact separates with fixed contact; Then because the existence of striking sheet extension 21 has prolonged the length of striking; Thereby improved the ability of disjunction, to such an extent as to protected the device in the housing 10, simultaneously in order to improve breaking capacity; For the center vertical line of described moving contact in described extension between the terminal and described static contact; Thereby more directly arc light is incorporated in the arc-extinguish chamber, has further improved breaking capacity, this is preferable structural arrangements.
See also shown in Fig. 2 C, it is the enlarged diagram of local B among Fig. 2 A.From figure, can know the difference of finding out described striking sheet extension 21 and existing striking sheet 2.
Can both reach the effect that promotes breaking capacity through the described extension of overtesting at 1 millimeter～30 millimeters, wherein breaking capacity constantly raises when the 0-2 millimeter, and breaking capacity tends towards stability in 2 millimeters～7 millimeters scopes; Wherein 6.5 millimeters breaking capacity are the highest; When the extension surpasses certain-length, just have requirement for the circuit breaker volume inside, produce interference with other structural member easily simultaneously; Promptly stick together, influenced production efficiency.
See also shown in Fig. 2 D, it can improve the structural representation of the circuit breaker preferred embodiment two of breaking capacity for the present invention; Compare with the foregoing description one, present embodiment has increased the striking ability of static contact direction, promptly at existing arc-extinguish chamber; Its metal arc extinguishing board stack by multilayer is formed, and each layer arc extinguishing board all offers recess usually, and the improvement of present embodiment is; Adopting tabular at arc-extinguish chamber one deck arc extinguishing board wherein, promptly be not provided with recess (combining shown in Fig. 2 E), is to be that tabular is an example with first arc extinguishing board here; Other layers also can be handled like this; Described first arc extinguishing board also will extend an extension to described static contact direction simultaneously, and then shortens the striking time of static contact direction, thereby improves breaking capacity.
Extension through the said arc extinguishing board of overtesting can both reach the effect that promotes breaking capacity at 1 millimeter～15 millimeters, and wherein breaking capacity constantly raises when the 0-2 millimeter, and breaking capacity tends towards stability in 2 millimeters～4 millimeters scopes; Wherein 3 millimeters breaking capacity are the highest; When the extension surpasses certain-length, just have requirement for the circuit breaker volume inside, produce interference with other structural member easily simultaneously; Promptly stick together, influenced production efficiency.
More than explanation is just illustrative for the purpose of the present invention, and nonrestrictive, those of ordinary skills understand; Under the situation of spirit that does not break away from following accompanying claims and limited and scope, can make many modifications, change; Or equivalence, but all will fall in protection scope of the present invention.
Claims (12)
1. circuit breaker that can improve breaking capacity; It comprises: a breaker body; Wherein said breaker body comprises: a housing; And place an end of incoming cables, a leading-out terminal and an actuating mechanism in the said housing, wherein, described actuating mechanism realizes the on off operating mode of described breaker body; Also comprise: a striking sheet; It is positioned at the bottom of described actuating mechanism; Described striking sheet has an extension in its bending place; It is characterized in that described striking sheet is partly to be welded by the first striking sheet part and the second striking sheet, the resistance of wherein said first striking sheet part is higher than the resistance of second striking sheet part.
2. the circuit breaker that can improve breaking capacity according to claim 1 is characterized in that, the described first striking sheet partly is positioned at the end of incoming cables.
3. the circuit breaker that can improve breaking capacity according to claim 2 is characterized in that, described extension length is 2 millimeters～7 millimeters.
4. according to claim 2 or the 3 described circuit breakers that can improve breaking capacity, it is characterized in that described actuating mechanism comprises:
One handle, it has an operating side and is arranged at outside the described housing, realizes the break-make control of power line through stirring said handle;
One movable contact spring, its end has a moving contact, and it is connected with first lead of being introduced by described leading-out terminal;
One interlock controll block group, it is made up of a plurality of interlock controll blocks, through being hinged and connected, comprising: an end of one first interlock controll block is connected with described handle, and a link end of controll block of an end is connected with the front end of described movable contact spring;
One static contact, it is connected with second lead of being introduced by described end of incoming cables.
5. the circuit breaker that can improve breaking capacity according to claim 3 is characterized in that, the center vertical line of described moving contact is between described extension end and described static contact.
6. the circuit breaker that can improve breaking capacity according to claim 4 is characterized in that, also comprises a short circuit detecting mechanism, and when short trouble produced, it produced a trigger action, and it comprises:
One iron core produces action through the described interlock controll block of its motion triggers group;
One back-moving spring, its with so that described iron core reset.
7. the circuit breaker that can improve breaking capacity according to claim 5 is characterized in that, also comprises: a short-circuit self-locking mechanism, and when producing short trouble, it makes described circuit breaker be in self-locking state, and it comprises:
One hook-type triggers part, and it is coupling in described housing;
One from the lock section, and it triggers part clasp joint mutually with described hook-type, and comprises a compression spring, and described upper end from the lock section is corresponding with the hole on the said housing; Described have a retaining to end from the lock section, its extension with described handle is corresponding.
8. the circuit breaker that can improve breaking capacity according to claim 4; It is characterized in that, also comprise: an arc-extinguish chamber, it places described short circuit detecting mechanism bottom; It is to be cascaded by some arc extinguishing boards, and the smooth section that described striking sheet has extends to described arc-extinguish chamber bottom.
9. the circuit breaker that can improve breaking capacity according to claim 8 is characterized in that, arc extinguishing board is a tabular one of in the said arc-extinguish chamber, and extends an extension to described static contact place.
10. the circuit breaker that can improve breaking capacity according to claim 9 is characterized in that, the extension length of described said tabular arc extinguishing board is 1 millimeter～15 millimeters.
11. the circuit breaker that can improve breaking capacity according to claim 10 is characterized in that, the extension length of described tabular arc extinguishing board is 2 millimeters～4 millimeters.
12. the circuit breaker that can improve breaking capacity according to claim 8; It is characterized in that, also comprise: a bimetal leaf, it is connected with first lead of described leading-out terminal; The one of which end is connected with described terminal interlock controll block; When temperature is too high, makes the action of described terminal interlock controll block thereby described bimetal leaf is crooked, and then make described breaker body produce the action of opening circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210093234.6A CN102760621B (en) | 2012-03-23 | 2012-03-23 | A kind of isolating switch that can improve breaking capacity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210093234.6A CN102760621B (en) | 2012-03-23 | 2012-03-23 | A kind of isolating switch that can improve breaking capacity |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102760621A true CN102760621A (en) | 2012-10-31 |
| CN102760621B CN102760621B (en) | 2016-06-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210093234.6A Active CN102760621B (en) | 2012-03-23 | 2012-03-23 | A kind of isolating switch that can improve breaking capacity |
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| Country | Link |
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| CN (1) | CN102760621B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2620366Y (en) * | 2002-05-09 | 2004-06-09 | 九川电器有限公司 | Residual voltage, residual arc conducting plate |
| CN101847553A (en) * | 2010-06-07 | 2010-09-29 | 湖北盛佳电器设备有限公司 | Breaker capable of improving disconnecting capacity |
| CN101996827A (en) * | 2009-08-28 | 2011-03-30 | 李文俊 | Leakage protection circuit breaker with arc extinguishing chamber at both poles |
| CN102024633A (en) * | 2010-12-03 | 2011-04-20 | 常熟开关制造有限公司(原常熟开关厂） | Arc striking/extinguishing mechanism of low-voltage circuit breaker |
| CN201918328U (en) * | 2011-01-10 | 2011-08-03 | 上海人民企业集团温州电器有限公司 | Arc striking structure of miniature circuit breaker |
| CN202513110U (en) * | 2012-03-23 | 2012-10-31 | 湖北盛佳电器设备有限公司 | Breaker capable of improving breaking capacity |
-
2012
- 2012-03-23 CN CN201210093234.6A patent/CN102760621B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2620366Y (en) * | 2002-05-09 | 2004-06-09 | 九川电器有限公司 | Residual voltage, residual arc conducting plate |
| CN101996827A (en) * | 2009-08-28 | 2011-03-30 | 李文俊 | Leakage protection circuit breaker with arc extinguishing chamber at both poles |
| CN101847553A (en) * | 2010-06-07 | 2010-09-29 | 湖北盛佳电器设备有限公司 | Breaker capable of improving disconnecting capacity |
| CN102024633A (en) * | 2010-12-03 | 2011-04-20 | 常熟开关制造有限公司(原常熟开关厂） | Arc striking/extinguishing mechanism of low-voltage circuit breaker |
| CN201918328U (en) * | 2011-01-10 | 2011-08-03 | 上海人民企业集团温州电器有限公司 | Arc striking structure of miniature circuit breaker |
| CN202513110U (en) * | 2012-03-23 | 2012-10-31 | 湖北盛佳电器设备有限公司 | Breaker capable of improving breaking capacity |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102760621B (en) | 2016-06-08 |
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Effective date of registration: 20190417 Address after: 430040 No. 8 (10) Ruihe Sixth Road, Ruihe Office, Dongxihu District, Wuhan City, Hubei Province Patentee after: HUBEI ZHIGUANG TECHNOLOGY CO., LTD. Address before: 430023 Shengjia Co., Ltd. on the second floor of No. 6 Pioneering Center, Jiangxing Road, Hankou, Wuhan, Hubei Province Co-patentee before: Wan Jiasheng Patentee before: Hubei Shengjia Electrical Equipment Co., Ltd. |