CN101777462A - Circuit breaker with mechanical overheating protection function - Google Patents
Circuit breaker with mechanical overheating protection function Download PDFInfo
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- CN101777462A CN101777462A CN 201010123449 CN201010123449A CN101777462A CN 101777462 A CN101777462 A CN 101777462A CN 201010123449 CN201010123449 CN 201010123449 CN 201010123449 A CN201010123449 A CN 201010123449A CN 101777462 A CN101777462 A CN 101777462A
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- circuit breaker
- protection function
- bimetal leaf
- controll block
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- Thermally Actuated Switches (AREA)
Abstract
The invention relates to a circuit breaker with mechanical overheating protection function. The circuit breaker comprises a circuit breaker body and at least one bimetallic strip, wherein the circuit breaker body comprises a shell, a wire inlet end and a wire outlet end which are arranged inside the shell, and an actuating mechanism, wherein the actuating mechanism realizes the on/off of a power line at the wire outlet end and the wire outlet end; and the bimetallic strip is arranged in the shell and triggers the actuating mechanism to actuate when the temperature is overhigh, so that the circuit breaker generates the circuit breaking action.
Description
Technical field
What the present invention relates to is a kind of circuit breaker, and a kind of circuit breaker that makes when end of incoming cables and/or leading-out terminal temperature are too high mechanically particularly produces the circuit breaker of the action of opening circuit.
Background technology
Switch switchgear for power department, be the assurance Electrical Safety, carry out circuit switching imperative equipment, its internal structure of existing circuit breaker sees also shown in Figure 1, and it comprises: a housing 001, adopt the insulation fire proofing to make, portion is provided with following structure within it:
One end of incoming cables 032 and a leading-out terminal 037 are in order to be linked in the power line; One actuating mechanism, it comprises: one handle 021, it has an operating side and is arranged at outside the described housing 001, carries out the break-make control of circuit; One movable contact spring 024, its end have a moving contact 025; One interlock controll block group 022, it is made up of a plurality of STATEMENT OF FEDERALLY SPONSORED, rotate by the axle that is arranged in the described housing 001, an end of its STATEMENT OF FEDERALLY SPONSORED that goes up most 0221 is connected with described handle 021, and the end of bottom STATEMENT OF FEDERALLY SPONSORED 0222 is connected with the front end of described movable contact spring 023; One fixed contact 031, it is connected with described end of incoming cables 032, when the described interlock controll block group 022 of turn handle 021 pulling, thereby causes seesawing of movable contact spring 024, the contact that realizes moving contact 025 and fixed contact 031 with separate, finally reach the purpose of power circuit break-make.It also comprises: an arc-extinguishing mechanism and an overcurrent protection mechanism; described arc-extinguishing mechanism is in order to eliminate the destruction of electric arc to circuit breaker; it comprises that a metal is when an arc plate 034 and an arc-extinguish chamber 035; described metal arc extinguishing board 033 is connected with described fixed contact 031 and extends to described housing 001 bottom, and described arc-extinguish chamber 035 is corresponding with described fixed contact 031.Described overcurrent protection mechanism is a magnetictrip 051; be arranged at described actuating mechanism bottom; the one end is connected with described movable contact spring upper end 023; its other end is connected with an end of a STATEMENT OF FEDERALLY SPONSORED 052; the other end of described STATEMENT OF FEDERALLY SPONSORED 052 is connected with described interlock controll block group 022; when overcurrent appears in power line, make described dynamic and static contact separately, load and power line are disconnected.
But along with people to improving constantly that electric power safety and control require, existing circuit breaker is to be difficult to reach this requirement, still there is following defective in it by analysis:
Owing to phase line is connected loosening reason with the end of incoming cables and/or the leading-out terminal of described breaker body, or the electric power on the circuit at circuit breaker place is excessive, often cause the end of incoming cables and/or the leading-out terminal of circuit breaker overheated, if untimely outage causes the accident of fire easily, thus the fault of formation electricity consumption.
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 with mechanical overheating protection function is provided, in order to overcome above-mentioned defective.
For achieving the above object, the technical solution used in the present invention is for providing a kind of circuit breaker with mechanical overheating protection function, comprise: a breaker body, wherein said breaker body comprises: a housing, and place an end of incoming cables in the described housing, a leading-out terminal and an actuating mechanism, wherein, described actuating mechanism realizes the break-make of the power line at place, described end of incoming cables and leading-out terminal place; At least one bimetal leaf, it is arranged in the described housing, and triggers described actuating mechanism action when temperature is too high, thereby makes described breaker body produce the action of opening circuit.
For the three kinds of modes that are provided with of bimetal leaf, promptly described bimetal leaf is a slice, and it places end of incoming cables or leading-out terminal in the described housing.Or described bimetal leaf is two, and it places end of incoming cables and leading-out terminal in the described housing respectively.
Wherein, described actuating mechanism comprises:
One handle, it has an operating side and is arranged at outside the described housing, in order to by stirring the break-make control that realizes power line;
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, by 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.
For one of concrete set-up mode of described bimetal leaf, described bimetal leaf is connected with first lead of described leading-out terminal, the one 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.
Preferable, also comprise: a magnetictrip, it is arranged at described actuating mechanism bottom, it comprises an armature, first end of described armature and described terminal interlock controll block lean, when overcurrent appears in power line, the described terminal interlock controll block of described armature pushing tow, thus make described breaker body produce the action of opening circuit.
For two of the concrete set-up mode of described bimetal leaf, described bimetal leaf is connected with second lead of described end of incoming cables, second end of one end and described armature leans, when temperature is too high, thereby described bimetal leaf bending promotes described armature second end, and then make the action of the described terminal interlock controll block of described armature pushing tow, and then make described breaker body produce the action of opening circuit.
Beneficial effect of the present invention compared with the prior art is, can effectively prevent because circuit breaker end of incoming cables and the overheated fault that burns out that causes circuit breaker of leading-out terminal.
Description of drawings
Fig. 1 is the sectional structure schematic diagram of existing circuit breaker;
Fig. 2 A has the sectional structure schematic diagram of the normal off state of circuit breaker preferred embodiment of mechanical overheating protection function for the present invention;
Fig. 2 B has the sectional structure schematic diagram of the circuit breaker preferred embodiment regular path state of mechanical overheating protection function for the present invention;
The sectional structure schematic diagram of the protection operate condition when overheated takes place in the circuit breaker preferred embodiment end of incoming cables that Fig. 2 C has a mechanical overheating protection function for the present invention;
The sectional structure schematic diagram of the protection operate condition when overheated takes place in the circuit breaker preferred embodiment leading-out terminal that Fig. 2 D has a mechanical overheating protection function for the present invention.
Embodiment
Below in conjunction with accompanying drawing, to this novel above-mentionedly is described in more detail with other technical characterictic and advantage.
See also shown in Fig. 2 A, Fig. 2 B; it is respectively, and circuit breaker preferred embodiment that the present invention has a mechanical overheating protection function is normally opened circuit and the sectional structure schematic diagram of channel status; described circuit breaker with mechanical overheating protection function comprises: a breaker body; wherein said breaker body comprises: a housing 10; and place ends of incoming cables 11, a leading-out terminal 12 and an actuating mechanism in the described housing 10; wherein, described actuating mechanism comprises:
One handle 13, it has an operating side and is arranged at outside the described housing 10, in order to by stirring the break-make control that realizes power line;
One movable contact spring 15, its end has a moving contact, and it is connected with first lead of being introduced by described leading-out terminal 12 32;
One interlock controll block group, it is made up of a plurality of interlock controll blocks, by being hinged and connected, comprising: an end of one first interlock controll block 14 is connected with described handle 13, and a terminal end that links controll block 16 is connected with the front end of described movable contact spring 15;
One static contact 18, it is connected with second lead of being introduced by described end of incoming cables 31
Described actuating mechanism realizes power line logical and disconnected at 11 places, described end of incoming cables and leading-out terminal 12 places.
The present invention is the purpose that reaches the overheated protection of breaker body; mainly, realizes bimetal leaf by being set; wherein; described bimetal leaf is by two kinds or multiplely have the metal of suitable performance or an a kind of composite material that other material is formed; be the sheet material that belongs to this type of composite material, bimetal leaf also claims thrermostatic bimetal-plate, because the thermal coefficient of expansion difference of each constituent element layer; when variations in temperature, the canal rate of this composite material will change.Wherein, the coefficient of expansion is higher is called active layers; The coefficient of expansion is than the passive layer that is called at the end.But modern age along with the expansion of bimetallic application and the progress of combination technology, three layers, four layers, five layers bimetallic appearred mutually.In fact, every temperature dependent changes and the combined material of generation change of shape, still is being called the thermo bimetal traditionally now.
The material of active layers mainly contains manganin manganin alloy, nichrome, nicalloy and nickel or the like; The material of passive layer mainly is a dilval, and nickel content is 34～50%.
Because the difference of expansion of metal coefficient, when temperature changed, the deformation of active layers was greater than the deformation of passive layer, thereby the integral body of bimetal leaf will produce deformation to passive layer one lateral bending song.
For bimetal leaf, it is arranged in the described housing 10, and triggers described actuating mechanism action when temperature is too high, thereby makes described breaker body produce the action of opening circuit.
For the three kinds of modes that are provided with of bimetal leaf, promptly described bimetal leaf is a slice, and it places end of incoming cables 11 or leading-out terminal 12 in the described housing.Or described bimetal leaf is two, and it places end of incoming cables 11 and leading-out terminal 12 in the described housing respectively.Shown in above-mentioned Fig. 2 A, Fig. 2 B, it has adopted two bimetal leafs exactly, is arranged at end of incoming cables 11 and leading-out terminal 12 in the described housing 10 respectively.
One first bimetal leaf 22 is connected with first lead 32 of described leading-out terminal 12, and the one end is connected with described terminal interlock controll block 16, can connect (as shown in FIG.) by connector also can directly connect.
For fear of overcurrent takes place, breaker body of the present invention also comprises: a magnetictrip, it is arranged at described actuating mechanism bottom, it comprises an armature 41, first end of described armature 41 and described terminal interlock controll block 16 lean, when overcurrent appears in power line, the described terminal interlock controll block 16 of described armature 41 pushing tows, thus make described breaker body produce the action of opening circuit.
One second bimetal leaf 21 is connected with second lead 31 of described end of incoming cables 11, and second end of one end and described armature 41 leans.
See also shown in Fig. 2 C and Fig. 2 D, it is respectively the present invention and has the sectional structure schematic diagram that the protection operate condition when overheated takes place for the circuit breaker preferred embodiment end of incoming cables of mechanical overheating protection function and leading-out terminal; Be positioned at described first bimetal leaf 32 of leading-out terminal 12, when temperature is too high, thereby 32 bendings of described first bimetal leaf make described terminal interlock controll block 16 actions, and then make described breaker body produce the action of opening circuit.
Be positioned at described second bimetal leaf 21 of end of incoming cables 11, when temperature is too high, thereby 21 bendings of described second bimetal leaf promote described armature 41 second ends, and then make described terminal interlock controll block 16 actions of described armature 41 pushing tows, and then make described breaker body produce the action of opening circuit.And then realization is to the protection of circuit breaker.
More than explanation is novel just illustrative for this, and nonrestrictive, those of ordinary skills understand; under the situation of the spirit and scope that do not break away from following claims and limited, can make many modifications, change; or equivalence, but all will fall within the scope of protection of the present invention.
Claims (7)
1. circuit breaker with mechanical overheating protection function, it is characterized in that, comprise: a breaker body, wherein said breaker body comprises: a housing, and place an end of incoming cables in the described housing, a leading-out terminal and an actuating mechanism, wherein, described actuating mechanism realizes the break-make of the power line at place, described end of incoming cables and leading-out terminal place; At least one bimetal leaf, it is arranged in the described housing, and triggers described actuating mechanism action when temperature is too high, thereby makes described breaker body produce the action of opening circuit.
2. the circuit breaker with mechanical overheating protection function according to claim 1 is characterized in that, described bimetal leaf is a slice, and it places end of incoming cables or leading-out terminal in the described housing.
3. the circuit breaker with mechanical overheating protection function according to claim 1 is characterized in that, described bimetal leaf is two, and it places end of incoming cables and leading-out terminal in the described housing respectively.
4. according to claim 2 or 3 described circuit breakers, it is characterized in that described actuating mechanism comprises with mechanical overheating protection function:
One handle, it has an operating side and is arranged at outside the described housing, in order to by stirring the break-make control that realizes power line;
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, by 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 with mechanical overheating protection function according to claim 4; it is characterized in that; described bimetal leaf is connected with first lead of described leading-out terminal; the one 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.
6. the circuit breaker with mechanical overheating protection function according to claim 4; it is characterized in that; also comprise: a magnetictrip; it is arranged at described actuating mechanism bottom; it comprises an armature, and first end of described armature and described terminal interlock controll block lean, when overcurrent appears in power line; the described terminal interlock controll block of described armature pushing tow, thus make described breaker body produce the action of opening circuit.
7. according to the described circuit breaker of claim 6 with mechanical overheating protection function; it is characterized in that; described bimetal leaf is connected with second lead of described end of incoming cables; second end of one end and described armature leans; when temperature is too high; promote described armature second end thereby described bimetal leaf is crooked, and then make the action of the described terminal interlock controll block of described armature pushing tow, and then make described breaker body produce the action of opening circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010123449 CN101777462B (en) | 2010-02-10 | 2010-02-10 | Circuit breaker with mechanical overheating protection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010123449 CN101777462B (en) | 2010-02-10 | 2010-02-10 | Circuit breaker with mechanical overheating protection function |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101777462A true CN101777462A (en) | 2010-07-14 |
| CN101777462B CN101777462B (en) | 2013-08-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010123449 Active CN101777462B (en) | 2010-02-10 | 2010-02-10 | Circuit breaker with mechanical overheating protection function |
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| Country | Link |
|---|---|
| CN (1) | CN101777462B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102543606A (en) * | 2012-01-19 | 2012-07-04 | 江苏普华力拓电器股份有限公司 | Miniature circuit breaker |
| CN109390190A (en) * | 2017-08-03 | 2019-02-26 | 乐星产电(无锡)有限公司 | Breaker |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86105712A (en) * | 1985-07-31 | 1987-04-08 | 默林·格伦 | The switchette of band multiple moving contacts and thermo magnetic trip release |
| US20030052762A1 (en) * | 2001-09-14 | 2003-03-20 | Rodney Raabe | PTC terminals |
| CN201112303Y (en) * | 2007-09-27 | 2008-09-10 | 温州奥来电器有限公司 | Accumulated energy type high subsection small circuit breaker |
| CN201256130Y (en) * | 2008-09-19 | 2009-06-10 | 郑春开 | Improved circuit breaker |
| CN201298519Y (en) * | 2008-09-17 | 2009-08-26 | 青田奥来电器有限公司 | Energy storage high-breaking miniature breaker |
| CN201340829Y (en) * | 2008-12-14 | 2009-11-04 | 濮兴华 | Miniature circuit breaker with overcurrent reset button |
| CN201804811U (en) * | 2010-02-10 | 2011-04-20 | 湖北盛佳电器设备有限公司 | Circuit breaker with mechanical overheating protection function |
-
2010
- 2010-02-10 CN CN 201010123449 patent/CN101777462B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86105712A (en) * | 1985-07-31 | 1987-04-08 | 默林·格伦 | The switchette of band multiple moving contacts and thermo magnetic trip release |
| US20030052762A1 (en) * | 2001-09-14 | 2003-03-20 | Rodney Raabe | PTC terminals |
| CN201112303Y (en) * | 2007-09-27 | 2008-09-10 | 温州奥来电器有限公司 | Accumulated energy type high subsection small circuit breaker |
| CN201298519Y (en) * | 2008-09-17 | 2009-08-26 | 青田奥来电器有限公司 | Energy storage high-breaking miniature breaker |
| CN201256130Y (en) * | 2008-09-19 | 2009-06-10 | 郑春开 | Improved circuit breaker |
| CN201340829Y (en) * | 2008-12-14 | 2009-11-04 | 濮兴华 | Miniature circuit breaker with overcurrent reset button |
| CN201804811U (en) * | 2010-02-10 | 2011-04-20 | 湖北盛佳电器设备有限公司 | Circuit breaker with mechanical overheating protection function |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102543606A (en) * | 2012-01-19 | 2012-07-04 | 江苏普华力拓电器股份有限公司 | Miniature circuit breaker |
| CN109390190A (en) * | 2017-08-03 | 2019-02-26 | 乐星产电(无锡)有限公司 | Breaker |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101777462B (en) | 2013-08-21 |
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Denomination of invention: Circuit breaker with mechanical overheating protection function Effective date of registration: 20230331 Granted publication date: 20130821 Pledgee: Bank of China Limited Wuhan Hanyang sub branch Pledgor: HUBEI SHENGJIA WIRING Co.,Ltd. Registration number: Y2023420000144 |
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