CN103050341A - Universal case for molded case circuit breaker, molded case circuit breaker and residual current circuit breaker - Google Patents
Universal case for molded case circuit breaker, molded case circuit breaker and residual current circuit breaker Download PDFInfo
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- CN103050341A CN103050341A CN2012105576225A CN201210557622A CN103050341A CN 103050341 A CN103050341 A CN 103050341A CN 2012105576225 A CN2012105576225 A CN 2012105576225A CN 201210557622 A CN201210557622 A CN 201210557622A CN 103050341 A CN103050341 A CN 103050341A
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- circuit breaker
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Abstract
The invention relates to a universal case for a molded case circuit breaker, the molded case circuit breaker and a residual current circuit breaker. According to the structure of the universal case for the molded case circuit breaker, the external dimensions and the mounting dimensions of the structures of the molded case circuit breaker and the residual current circuit breaker are consistent, and the part universality reaches over 95 percent, namely the size increase is avoided, and the development cost and the die cost are lowered. Moreover, the molded case circuit breaker and the residual current circuit breaker are conveniently arranged and replaced by a user. Unified external dimensions and unified appearance are adopted for the residual current circuit breaker and the molded case circuit breaker with the structure. Arc extinction systems, contact systems and operation systems in the residual current circuit breaker and the molded case circuit breaker are completely consistent, and release structures of the residual current circuit breaker and the molded case circuit breaker are different.
Description
Technical field
The present invention relates to a kind of universal plastic-casing Shell of circuit breaker and a kind of breaker of plastic casing and residual current circuit breaker, specifically a kind of simple replacement by part just can realize breaker of plastic casing and the universal plastic-casing Shell of circuit breaker of moulding the replacing of shell residual current circuit breaker, belongs to the low-voltage electrical apparatus applied technical field.
Background technology
The effect of breaker of plastic casing is: in the situation that overload, short circuit and under voltage, can protection circuit and power supply be not damaged.And the effect of moulding the shell residual current circuit breaker is: the person that fatal risk is arranged is got an electric shock provides the indirect contact protection, and prevents that insulation of electrical installation from damaging the disasters such as fire that cause.Because the difference of circuit breaker and residual current circuit breaker above-mentioned functions, the two does not have versatility.
According to the above-mentioned functions difference, residual current circuit breaker needs to increase zero sequence current mutual inductor, wiring board, the functional parts such as leakage tripping device compared to circuit breaker.Most of producer, by the contact system of redesign circuit breaker, operating mechanism and tripper structure can make residual current circuit breaker have less volume and comparatively simple structure.Its structure of residual current circuit breaker after the redesign and original circuit breaker difference are larger, in the processing preparation process, need to drop into new mould, have the high defective of cost.
Therefore some technical staff propose in the situation that originally structure of circuit breaker remained unchanged, and directly increase to have the electric leakage dropout module of creepage protection function, just circuit breaker can be adapted as residual current circuit breaker.The dropout module of directly will leaking electricity disassembles just and residual current circuit breaker can be adapted as circuit breaker, so can make things convenient between circuit breaker and the residual current circuit breaker and exchange, and also further cuts down finished cost.A kind of dismountable electric leakage module of circuit breaker is disclosed such as existing patent documentation CN 202102990U, comprise shell, be provided with zero sequence current mutual inductor in the shell, zero sequence current mutual inductor is provided with secondary winding, shell also is provided with trip signal and draws interface, this trip signal is drawn the secondary winding of the input connection zero sequence current mutual inductor of interface, and shell upper is provided with the input terminal that is connected for the circuit breaker electric source output terminal, and outer casing underpart is provided with the outlet terminal that is connected with load.Its structure as shown in Figure 1, the such scheme dropout module of will leaking electricity is installed in the leading-out terminal of circuit breaker, although convenient and simple, the mould less investment, if but these parts are joined in the circuit breaker, will certainly increase the volume of circuit breaker, make the structure complicated of circuit breaker.And that the space of circuit breaker is installed in general being suitable for is all very little, can and rationally utilize and make troubles to the distribution in space if increase electric leakage dropout module.Therefore how realizing that again the structure between circuit breaker and residual current circuit breaker exchanges under the different prerequisites that increase costs not increasing the circuit breaker usage space, is the difficult problem that the technical staff needs to be resolved hurrily.
Summary of the invention
Technical problem to be solved by this invention is that circuit breaker of the prior art and residual current circuit breaker complex structure or cost when exchanging are higher, thereby a kind of universal plastic-casing Shell of circuit breaker that can make things convenient for circuit breaker and residual current circuit breaker to exchange and need not increase the circuit breaker usage space is provided, and a kind of breaker of plastic casing and a kind of residual current circuit breaker of utilizing this housing of utilizing this housing.
For solving the problems of the technologies described above, the present invention is achieved by the following technical solutions:
A kind of universal plastic-casing Shell of circuit breaker comprises:
Pedestal is provided with the functional unit of four phase places of adjacent correspondence in it;
Each functional unit comprises:
Arc control device near described pedestal one side setting, arrange U-shaped arc extinguishing grid pieces in it, the U-shaped opening of described U-shaped arc extinguishing grid pieces is back to described pedestal;
Contact system comprises the fixed contact that is arranged at described arc control device bottom, and the moving contact that cooperates with described fixed contact, and the first end of described movable contact is positioned at described U-shaped arc extinguishing grid pieces inside, and the other end is leading-out terminal, and described leading-out terminal is connected with operating mechanism;
The position adjacent with described operating mechanism is provided with for the headspace that release is installed in the described pedestal, and an end of described release is connected with the leading-out terminal of described moving contact, is fixed in the described pedestal.
A kind of breaker of plastic casing comprises above-mentioned universal plastic-casing Shell of circuit breaker, and is arranged at the release that opens circuit in the described headspace.
The described release that opens circuit comprises:
Support is fixed in described base interior, is connected with the leading-out terminal of described moving contact;
Armature is riveted together with described support, is fixed in described support top;
Iron core is riveted together with described support, is fixed in described support bottom;
Thermal element is riveted on the position between the above armature of described support and the described iron core,
Connecting portion is concave character type, and the one end is welded on the described thermal element, and the other end is connected with fixture;
Described fixture is fixedly installed in the described pedestal.
The described release that opens circuit also comprises П shape phase insulating board, is provided with the П shape draw-in groove that cooperates with described П shape phase insulating board in described base bottom.
A kind of residual current circuit breaker comprises above-mentioned universal plastic-casing Shell of circuit breaker, and is arranged at the leakage tripping device in the described headspace.
Described leakage tripping device comprises: annular mutual inductor coil, be fixed on the support in the described pedestal;
Circuit board is fixed on the described pedestal;
The leakage tripping device connecting portion, an end is fixedly connected with described circuit board, and the inside that the other end passes described annular mutual inductor coil is connected with the leading-out terminal of described moving contact.
Described leakage tripping device connecting portion is U-shaped.
The application's said structure compared with prior art has following beneficial effect:
(1) structure of universal plastic-casing Shell of circuit breaker in the present embodiment makes breaker of plastic casing and residual current circuit breaker structure overall dimensions, and installation dimension is consistent.Component universality reaches more than 95%.Realize that namely volume does not increase, again reducing development cost and die cost.And make things convenient for user installation, exchange.The residual current circuit breaker of this structure and breaker of plastic casing adopt unified overall dimension and outward appearance.Inner arc quenching system, contact system, operating mechanism is in full accord, and its difference is tripper structure.
(2) breaker of plastic casing among the application is designed to the straight-through wire of concave character type with connecting portion, and moving contact and leading-out terminal gusset piece are directly connected by spot welding.Because of pedestal release position A, B, C three-phase open and lead to, and do not cut off simultaneously.Electric clearance is not enough, and phase fault easily occurs.We have designed phase insulating board in alternate center on pedestal for this reason, to improve electrical apparatus insulation.Designed insulation board " ∏ " shape draw-in groove at pedestal.In order to the fixed insulation plate.
(3) residual current circuit breaker among the application adopts the clapper-type electromagnetic device with the leakage, breaking release, to iron core, and armature, support is optimized design, significantly reduced volume.Abdicate the space can for the residual current circuit breaker parts.The release thermal element is designed to U-shaped.Pierce into the center circle of instrument transformer, an end is fixed on the pedestal leading-out terminal.Simultaneously, leakage tripping device utilizes the space on C item conducting system top.Be fixed on the pedestal, button cooperates with lid, and the release pull bar cooperates with draw bar.Finish earth leakage protective separating brake function.
Description of drawings
For content of the present invention is more likely to be clearly understood, below in conjunction with accompanying drawing, the present invention is further detailed explanation, wherein,
Fig. 1 is the mounting structure schematic diagram of a kind of dismountable electric leakage module of circuit breaker of providing of prior art;
Fig. 2 is the structural representation of a kind of plastic case breaker casing provided by the invention;
Fig. 3 is a kind of breaker of plastic casing structural representation provided by the invention;
Fig. 4 is a kind of residual current circuit breaker structural representation provided by the invention;
Fig. 5 is the structural representation of a kind of release that opens circuit provided by the invention;
Fig. 6 is a kind of leakage, breaking modular structure schematic diagram provided by the invention;
Fig. 7 is a kind of П type insulation board structural representation provided by the invention.
Wherein Reference numeral is: 1-pedestal, 2-arc control device, 3-contact system, 4-operating mechanism, 5-headspace, the 6-release that opens circuit, the 601-support, 602-armature, 603-iron core, the 604-connecting portion, 605-fixture, 606-thermal element, the 62-phase insulating board, 7-leakage tripping device, 71-annular mutual inductor coil, 72-leakage tripping device connecting portion, the 73-circuit board.
Embodiment
A kind of universal plastic-casing Shell of circuit breaker of the present invention comprises: pedestal 1 is provided with the functional unit of four phase places of adjacent correspondence in it; Each functional unit comprises: arc control device 2, near described pedestal 1 one side settings, U-shaped arc extinguishing grid pieces is set in it, and the U-shaped opening of described U-shaped arc extinguishing grid pieces deviates from described pedestal 1 and arranges; Contact system 3 comprises the fixed contact that is arranged at described arc control device 2 bottoms, and the moving contact that cooperates with described fixed contact, and it is inner that the first end of described movable contact is positioned at described U-shaped arc extinguishing grid pieces, and the other end is connected with operating mechanism 4; Described pedestal 1 interior and described operating mechanism 4 adjacent positions are provided with for the headspace 5 that release is installed, and described release one end is connected with the leading-out terminal of described moving contact, and the other end is fixed in the described pedestal 1.
The structure of universal plastic-casing Shell of circuit breaker in the present embodiment makes breaker of plastic casing and residual current circuit breaker structure overall dimensions, and installation dimension is consistent.Component universality reaches more than 95%.Realize that namely volume does not increase, again reducing development cost and die cost.And make things convenient for user installation, exchange.The residual current circuit breaker of this structure and breaker of plastic casing adopt unified overall dimension and outward appearance.Inner arc quenching system, contact system, operating mechanism is in full accord, and its difference is tripper structure.
The present embodiment also provides a kind of breaker of plastic casing, comprises above-mentioned universal plastic-casing Shell of circuit breaker, and is arranged at the release 6 that opens circuit in the described headspace 5.The described release 6 that opens circuit comprises: support 601, be fixed in described pedestal 1 inside, and be connected with the leading-out terminal of described moving contact; Armature 602 is riveted together with described support 601, is fixed in described support 601 tops; Iron core 603 is riveted together with described support 601, is fixed in described support 601 bottoms; Thermal element 606 is riveted on the position between described support 1 the above armature 602 and the described iron core 603, and connecting portion 604 is concave character type, and the one end is welded on the described thermal element 606, and the other end is connected with fixture 605; Described fixture 605 is fixedly installed in the described pedestal 1.The described release 6 that opens circuit also comprises П shape phase insulating board 62, is provided with the П shape draw-in groove that cooperates with described П shape phase insulating board 62 in described pedestal 1 bottom.
Said structure is designed to the straight-through wire of concave character type with connecting portion, and moving contact and leading-out terminal gusset piece are directly connected by spot welding.Because of pedestal release position A, B, C three-phase open and lead to, and do not cut off simultaneously.Electric clearance is not enough, and phase fault easily occurs.We have designed phase insulating board in alternate center on pedestal for this reason, to improve electrical apparatus insulation.Designed insulation board " ∏ " shape draw-in groove at pedestal.In order to the fixed insulation plate.
The present embodiment also provides a kind of residual current circuit breaker, comprises above-mentioned universal plastic-casing Shell of circuit breaker, and is arranged at the leakage tripping device 7 in the described headspace 5.Described leakage tripping device 7 comprises: annular mutual inductor coil (71), be fixed on the support in the described pedestal 1; Circuit board 73 is fixed on the described pedestal 1; Leakage tripping device connecting portion 72, one ends are fixedly connected with described circuit board 73, and the inside that the other end passes described annular mutual inductor coil 71 is connected with the leading-out terminal of described moving contact.
This structure adopts the clapper-type electromagnetic device with the leakage, breaking release, to iron core, and armature, support is optimized design, significantly reduced volume.Abdicate the space can for the residual current circuit breaker parts.The release thermal element is designed to U-shaped.Pierce into the center circle of instrument transformer, an end is fixed on the pedestal leading-out terminal.Simultaneously, leakage tripping device utilizes the space on C item conducting system top.Be fixed on the pedestal, button cooperates with lid, and the release pull bar cooperates with draw bar.Finish earth leakage protective separating brake function.
The application only changes the connecting portion structure and increases phase insulating board, well solves breaker of plastic casing and the skimble-scamble problem of residual current circuit breaker internal structure.Realization overall dimension is identical, and the construction cycle has been shortened in the maximization of universal component, has reduced production cost, has improved the performance of enterprises.
Obviously, above-described embodiment only is for example clearly is described, and is not the restriction to execution mode.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here need not also can't give all execution modes exhaustive.And the apparent variation of being extended out thus or change still are among the protection range of the invention.
Claims (7)
1. universal plastic-casing Shell of circuit breaker comprises:
Pedestal (1) is provided with the functional unit of four phase places of adjacent correspondence in it;
Each functional unit comprises:
Arc control device (2) near described pedestal (1) one side setting, arrange U-shaped arc extinguishing grid pieces in it, the U-shaped opening of described U-shaped arc extinguishing grid pieces is back to described pedestal (1);
Contact system (3), comprise the fixed contact that is arranged at described arc control device (2) bottom, and the moving contact that cooperates with described fixed contact, it is inner that the first end of described movable contact is positioned at described U-shaped arc extinguishing grid pieces, the other end is leading-out terminal, and described leading-out terminal is connected with operating mechanism (4);
It is characterized in that:
The position adjacent with described operating mechanism (4) is provided with for the headspace (5) that release is installed in the described pedestal (1), and an end of described release is connected with the leading-out terminal of described moving contact, and the other end is fixed in the described pedestal (1).
2. breaker of plastic casing is characterized in that:
Comprise universal plastic-casing Shell of circuit breaker claimed in claim 1, and be arranged at the release that opens circuit (6) in the described headspace (5).
3. breaker of plastic casing according to claim 2 is characterized in that:
The described release that opens circuit (6) comprising:
Support (601) is fixed in described pedestal (1) inside, is connected with the leading-out terminal of described moving contact;
Armature (602) is riveted together with described support (601), is fixed in described support (601) top;
Iron core (603) is riveted together with described support (601), is fixed in described support (601) bottom;
Thermal element (606) is riveted on the position between the above armature of described support (1) (602) and the described iron core (603);
Connecting portion (604) is concave character type, and the one end is welded on the described thermal element (606), and the other end is connected with fixture (605);
Described fixture (605) is fixedly installed in the described pedestal (1).
4. breaker of plastic casing according to claim 3 is characterized in that:
The described release that opens circuit (6) also comprises П shape phase insulating board (62), is provided with the П shape draw-in groove that cooperates with described П shape phase insulating board (62) in described pedestal (1) bottom.
5. a residual current circuit breaker is characterized in that: comprise universal plastic-casing Shell of circuit breaker claimed in claim 1, and be arranged at the leakage tripping device (7) in the described headspace (5).
6. residual current circuit breaker according to claim 5 is characterized in that:
Described leakage tripping device (7) comprising:
Annular mutual inductor coil (71) is fixed on the support in the described pedestal (1);
Circuit board (73) is fixed on the described pedestal (1);
Leakage tripping device connecting portion (72), an end is fixedly connected with described circuit board (73), and the inside that the other end passes described annular mutual inductor coil (71) is connected with the leading-out terminal of described moving contact.
7. general residual current circuit breaker according to claim 6 is characterized in that:
Described leakage tripping device connecting portion (72) is U-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210557622.5A CN103050341B (en) | 2012-12-20 | 2012-12-20 | Universal plastic-casing Shell of circuit breaker, breaker of plastic casing and residual current circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210557622.5A CN103050341B (en) | 2012-12-20 | 2012-12-20 | Universal plastic-casing Shell of circuit breaker, breaker of plastic casing and residual current circuit breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103050341A true CN103050341A (en) | 2013-04-17 |
| CN103050341B CN103050341B (en) | 2015-12-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210557622.5A Active CN103050341B (en) | 2012-12-20 | 2012-12-20 | Universal plastic-casing Shell of circuit breaker, breaker of plastic casing and residual current circuit breaker |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104465234A (en) * | 2013-09-19 | 2015-03-25 | 天津中电华利电器科技集团有限公司 | Circuit breaker molded case |
| CN104835691A (en) * | 2015-03-04 | 2015-08-12 | 浙江天正电气股份有限公司 | Universal pedestal, and thermo-magnetic moulded case circuit breaker and electronic moulded case circuit breaker using the pedestal |
| CN106128869A (en) * | 2016-08-19 | 2016-11-16 | 天津市百利电气有限公司 | There is the quadrupole moulded case circuit breaker of creepage protection function |
| CN108807091A (en) * | 2017-04-26 | 2018-11-13 | 海格科技股份有限公司 | Band residual current acting takes control switch automatically |
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| CN2622847Y (en) * | 2003-01-07 | 2004-06-30 | 王卫东 | Residual current protector |
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| CN202084494U (en) * | 2011-06-16 | 2011-12-21 | 浙江加西亚电子电器有限公司 | Breaker with plastic shell |
| CN202084493U (en) * | 2011-05-12 | 2011-12-21 | 台安科技(无锡)有限公司 | Electromagnetic instantaneous trip adjusting device of low-voltage circuit breaker |
| CN202940199U (en) * | 2012-12-20 | 2013-05-15 | 浙江天正电气股份有限公司 | Universal molded cased circuit breaker housing, molded case circuit breaker and residual current circuit breaker |
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| CN2368156Y (en) * | 1999-04-04 | 2000-03-08 | 吴赛乐 | Ejecting-type tripping-mode leakage breaker |
| CN2622847Y (en) * | 2003-01-07 | 2004-06-30 | 王卫东 | Residual current protector |
| CN1624847A (en) * | 2004-12-14 | 2005-06-08 | 常熟开关制造有限公司(原常熟开关厂） | Plastic casing circuit breaker |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104465234A (en) * | 2013-09-19 | 2015-03-25 | 天津中电华利电器科技集团有限公司 | Circuit breaker molded case |
| CN104835691A (en) * | 2015-03-04 | 2015-08-12 | 浙江天正电气股份有限公司 | Universal pedestal, and thermo-magnetic moulded case circuit breaker and electronic moulded case circuit breaker using the pedestal |
| CN106128869A (en) * | 2016-08-19 | 2016-11-16 | 天津市百利电气有限公司 | There is the quadrupole moulded case circuit breaker of creepage protection function |
| CN108807091A (en) * | 2017-04-26 | 2018-11-13 | 海格科技股份有限公司 | Band residual current acting takes control switch automatically |
| CN108807091B (en) * | 2017-04-26 | 2024-05-03 | 海格科技股份有限公司 | Automatic charge control switch with residual current action |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103050341B (en) | 2015-12-02 |
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