CN105632848A - Circuit breaker capable of adjusting instantaneous tripping current - Google Patents
Circuit breaker capable of adjusting instantaneous tripping current Download PDFInfo
- Publication number
- CN105632848A CN105632848A CN201610133485.0A CN201610133485A CN105632848A CN 105632848 A CN105632848 A CN 105632848A CN 201610133485 A CN201610133485 A CN 201610133485A CN 105632848 A CN105632848 A CN 105632848A
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- China
- Prior art keywords
- magnetic conductive
- conductive pole
- yoke
- armature
- magnetic
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/12—Automatic release mechanisms with or without manual release
- H01H71/24—Electromagnetic mechanisms
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/74—Means for adjusting the conditions under which the device will function to provide protection
- H01H71/7463—Adjusting only the electromagnetic mechanism
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Breakers (AREA)
Abstract
The invention relates to a circuit breaker capable of adjusting instantaneous tripping current. The circuit breaker comprises a shell and a clapping type tripping device, wherein the clapping type tripping device comprises a tripping mechanism, an excitation conductor, a magnet yoke and an armature; the magnet yoke comprises two side plates arranged in opposite and a spacing cavity formed between the two side plates; the armature is mounted in the shell through a rotation shaft; the lower part of the armature extends along the length direction of the rotation shaft to form a clapping surface that is wider than the distance of the two side plates; the clapping surface and the end planes of the two side plates are matched in a clapping manner; a reset elastic element is arranged on the exterior of the rotation shaft in a sleeving manner; the magnet yoke is provided with a magnetic conducive rod along the spaced direction of the two side plates, and the magnetic conducive rod can move along the axial direction; one axial end of the magnetic conducive rod passes through one side plate to extend into the spacing cavity of the magnet yoke while the other axial end of the magnetic conducive rod extends out of the spacing cavity; and an insulating adjusting rod is arranged on the magnetic conducive rod and used for driving the magnetic conducive rod to axially move so as to adjust the depth of one end, extending to the spacing cavity, of the magnetic conducive rod. The circuit breaker has the advantages of simple structure, easy machining and realization, convenient adjustment operation, and easier control of adjustment precision.
Description
Technical field
The present invention relates to a kind of isolating switch, belong to low-voltage apparatus distribution appliance field.
Background technology
Distribution products commonly uses breaker of plastic casing (MCB, MCCB), mainly contains coil type and clapper-type two kinds for the magnetic release in this series products. Comparatively speaking, clapper-type magnetic release generally direct using busbar as magnet coil, and coil type magnetic release can adopt different coil turns according to different current specification. In the multiplex isolating switch bigger in specification of clapper-type magnetic release (being greater than 80A), in the multiplex isolating switch less in rated current of coil type magnetic release (being less than 63A). Owing to moulding the small-sized isolating switch of shell (MCB) by space constraint, the small-size moulded case circuit breaker that 18mm is wide, maximum rated current can only accomplish 125A at present, such as, and the 5S series small isolating switch of Siemens Company's production and sales. Such big current product generally all adopts clapper-type magnetic release to trigger contact mechanism and unlocks. When circuit is short-circuited fault time, excitation conductor there will be short-circuit current, make armature and yoke adhesive, thus trigger isolating switch tripping mechanism unlock thread off, it is achieved short-circuit protection function.
According to national standard, GB10963-2004, the instantaneous trip scope of such small-sized isolating switch (MCB) is as follows, (5.3.5 clause)
Dropout form exchange scope direct current scope
B3In<I��5In4In<I��7In
C5In<I��10In7In<I��15In
That is, the small-sized isolating switch of such different rated current specification, adopt different dropout forms, for different scopes, its dropout current value all must adjust by standard. At present, the small-sized isolating switch product (MCB) of such domestic and international big current does not in use all regulate the function of instantaneous trip electric current.
Summary of the invention
For overcoming the defect that prior art exists, objects of the present invention are to provide a kind of adjustable instantaneous trip electric current, and structure is simple, easy to operate, regulates accurate isolating switch.
For achieving the above object, the present invention provides following technical scheme: the isolating switch of a kind of adjustable instantaneous trip electric current, include housing, and the clapper-type electrical apparatus release being located in housing, contact mechanism, described clapper-type electrical apparatus release includes tripping mechanism, excitation conductor, yoke and armature, described yoke comprises two blocks of side plates positioned opposite, separate space between being formed between two blocks of side plates, armature is arranged in housing through rotating shaft, extend along described shaft length direction and form the fitting surface wider than two pieces of described side plate distances in the bottom of armature, described fitting surface coordinates with the end face of two blocks of described side plates claps conjunction, the reseting elastic element making described fitting surface away from two pieces of described side plate end faces it is arranged with outside described rotating shaft, it is characterized in that: described yoke is provided with magnetic conductive pole along side plate septal direction described in two, magnetic conductive pole can move along its axis, the axial one end of magnetic conductive pole is through wherein side plate and stretches between yoke in separate space, the axial the other end of magnetic conductive pole stretches out a separate space, magnetic conductive pole has and drives magnetic conductive pole to move axially to regulate magnetic conductive pole to stretch into the insulation stretching into the degree of depth in one end in a separate space to regulate part.
The isolating switch of the present invention, original yoke installs magnetic conductive pole additional, the biside plate that magnetic conductive pole stretches into yoke formed between in separate space, thus form magnetic bypass, by regulating magnetic conductive pole to stretch into the degree of depth of one end in a separate space, namely magnetic conductive pole stretches into the length in a separate space, reaches the magneticstrength changed in yoke, make under equal current conditions, to change yoke to the suction size of armature, therefore reach instantaneous trip current setting; Wherein to stretch into the length between the biside plate of yoke more long for magnetic conductive pole, the Weakening degree in magnetic field is more big, make yoke in excitation conductor is by same current situation that the suction of armature is more little, therefore under armature suction is met requirement of threading off by yoke, increase instantaneous trip electric current, otherwise reduce dropout electric current; Its structure is simple, and adjustment operation is convenient, and precision more easily controls.
The present invention is further, the side plate of described yoke is provided with screw thread through hole, described insulation regulates the periphery of part to be provided with outside screw, and on the insulate outside screw and yoke that regulate part, screw thread through hole is adaptive, and magnetic conductive pole regulates part screw thread spinning in screw thread through hole through insulation.
Under said structure designs, the direct screw thread spinning of magnetic conductive pole is on the side plate of yoke, and structure is more compact, assembles more convenient, and shared internal space is little, saves cost; And magnetic conductive pole regulates thread fit on part for insulation, realizing adjustment operation by being threaded into back-out, sharpness of regulation is better, convenient operation.
Further, described insulation regulates part to be located at one end that magnetic conductive pole stretches out a separate space in the present invention, and it is the free end separated with described side plate corresponding thereto that magnetic conductive pole stretches into separate space one end.
Part is regulated to be located at one end that magnetic conductive pole stretches out a separate space insulation, the magnetic conductive pole the other end is free end, structure is more simply compact, shared internal space is little, avoid other parts to stretch in a separate space and the adjustment of magnetic conductive pole is caused interference, regulating more accurate, and realize being formed between complete magnetic conductive pole and yoke insulation, security is better.
Further, described housing is provided with adjustment operation through hole in the present invention, and the insulation on magnetic conductive pole regulates part to expose through adjustment operation through hole.
Said structure when not taking housing apart, can directly carry out adjustment operation under designing, easy to operate.
The present invention is further, and the material of described yoke and armature is pure iron, and it is thick that the side plate thickness of yoke is greater than armature plate.
Under said structure designs, it is possible to more effective utilize electric power magnetic field to make armature movement, tripping mechanism is promoted to unlock instantaneously.
The present invention is further, and described armature is arranged on two side plates of described yoke by rotating shaft.
Under said structure, being directly installed in yoke by armature, process and assemble is convenient, and structure is more compact.
Below in conjunction with accompanying drawing, the invention will be further described.
Accompanying drawing explanation
Fig. 1 is the breaker structure schematic diagram of the adjustable instantaneous trip electric current of the specific embodiment of the invention;
Fig. 2 is the non-trip status schematic diagram of isolating switch of the specific embodiment of the invention adjustable instantaneous trip electric current;
Fig. 3 is the circuit breaker tripping view of the adjustable instantaneous trip electric current of the specific embodiment of the invention;
Fig. 4 is that specific embodiment of the invention yoke part coordinates schematic diagram with housing;
Fig. 5 is specific embodiment of the invention yoke part fit structure schematic diagram;
Fig. 6 is specific embodiment of the invention yoke partial side view;
Fig. 7 is specific embodiment of the invention armature structure schematic diagram.
Embodiment
As shown in Fig. 1 ~ Fig. 6, the isolating switch of a kind of adjustable instantaneous trip electric current disclosed by the invention, include housing 1, and the clapper-type electrical apparatus release being located in housing, contact mechanism, described clapper-type electrical apparatus release includes tripping mechanism 2, excitation conductor 3, yoke 4 and armature 5, described yoke 4 comprises two blocks of side plates 41 positioned opposite, 42, two blocks of side plates 41, separate space 43 between being formed between 42, armature 5 is arranged in housing 1 through rotating shaft 51, extend along described rotating shaft 51 length direction and formed wider than two blocks of described side plates 41 in the bottom of armature 5, the fitting surface of 42 distances, described fitting surface and two blocks of described side plates 41, the end face of 42 coordinates claps conjunction, it is arranged with outside described rotating shaft 51 and makes described fitting surface away from two blocks of described side plates 41, the reseting elastic element 52 of 42 end faces, reseting elastic element 52 is preferably torsion spring, along side plate 41 described in two in described yoke 4, 42 septal direction are provided with magnetic conductive pole 6, magnetic conductive pole 6 can move along its axis, the axial one end of magnetic conductive pole 6 is through wherein side plate 52 and stretches between yoke 4 in separate space 43, the axial the other end of magnetic conductive pole 6 stretches out a separate space 43, magnetic conductive pole 6 has and drives magnetic conductive pole 6 to move axially to regulate magnetic conductive pole 6 to stretch into the insulation stretching into the degree of depth in one end in a separate space 43 to regulate part 61, insulation regulates part to obtain by insulating material, insulating material is electrical field routine techniques, such as pottery, glass, insulating plastics etc., therefore repeat no more. the i.e. biside plate 41 of yoke 4, 42 gap-formings surround separate space 43 between magnetic field, wherein side plate 41 is as the bottom of a separate space 43, another side plate 42 is as the top of a separate space 43, magnetic conductive pole 6 insert from the top of a separate space 43 between in separate space 43, magnetic conductive pole 6 part stretches in a separate space, magnetic conductive pole 6 another part stretches out a separate space, magnetic conductive pole 6 stretches into interval cavity segment and forms magnetic bypass in yoke 4, magnetic conductive pole 6 stretches into the length more long (degree of depth is more dark) of a separate space, the attenuation in magnetic field is more big, the suction of armature is reduced by yoke, under dropout power one stable condition, by regulating magnetic conductive pole to stretch into the length of a separate space, reach the adjustment to dropout electric current.
The side plate 42 of described yoke 4 is provided with screw thread through hole 421, the periphery of part 61 is regulated to be provided with outside screw in described insulation, insulation regulates screw thread through hole 421 in outside screw and the yoke 4 of part 61 adaptive, and magnetic conductive pole 6 can move axially in screw thread through hole 421 through insulation adjustment part 61 screw thread spinning. Structure is more compact, assembles more convenient, saves cost, regulates meticulous, it may also be useful to safety. Certainly special pedestal can be adopted to realize the installation of magnetic conductive pole, side plate is established for the through hole that magnetic conductive pole passes, magnetic conductive pole can be directly guide hole, magnetic conductive pole slidably, realizes by axially promoting magnetic conductive pole regulating in guide hole, namely operate to magnetic conductive pole to move axially direction consistent, there is the defect that adjustment operation is inconvenient and precision controlling is inaccurate, and in small-sized isolating switch, its internal space is preferential, increases pedestal in addition and do not allow. The diameter of magnetic conductive pole 6 is less than the diameter that insulation regulates part 61, and one end of magnetic conductive pole 6 is tightly inserted in the axial centre that insulation regulates one end of part 61, and it is easy to process.
For further makes structure simple, described adjustment part 61 is located at one end that magnetic conductive pole 6 stretches out a separate space 43, and it is the free end separated with described side plate 41 corresponding thereto that magnetic conductive pole 6 stretches into a separate space 43 one end. Under this design, insulation regulates part 61 to realize the installation to magnetic conductive pole, and structure is more simple, regulates more accurate. Across two side plates, but there is complex structure by other rod-like members in certain magnetic conductive pole, impact yoke caused big like this, and it is unfavorable the precision threaded off to be caused, therefore the scheme of preferred this specific embodiment, reduce the impact on yoke, it is to increase dropout precision.
For ease of adjustment operation, being provided with adjustment operation through hole 11 on described housing 1, on magnetic conductive pole 6, insulation regulates part 61 to expose through adjustment operation through hole 11. Insulation regulates the end of part to establish a word groove or cross groove or surface of friction or inner hexagonal hole etc., convenient regulates part to drive insulation. For better adapting to use on small-sized isolating switch, insulation regulates the end of part and housing outer wall to put down together, and during adjustment, insulation regulates part to be in all the time in housing.
The material of described yoke 4 and armature 5 is pure iron, and it is thick that side plate 41,42 thickness of yoke 4 is greater than armature 5 plate. Under this structure design, it is possible to more effective utilize electric power magnetic field to make armature movement, tripping mechanism is promoted to unlock instantaneously.
In this specific embodiment, described armature 5 is arranged on two side plates 41,42 of described yoke 4 by rotating shaft 51, and the structure of such electrical apparatus release is more compact.
The isolating switch of the present invention, principle of operation is: insertion magnetic conductive pole 6 in separate space 43 between being formed between the biside plate 41,42 of yoke 4, thus in yoke 4, forming magnetic bypass, magnetic conductive pole 6 stretches into degree of depth difference in a separate space 43 and the magneticstrength in yoke 4 is caused Different Effects; By regulating magnetic conductive pole 6 to stretch into the degree of depth of one end in a separate space 43, namely magnetic conductive pole 6 stretches into the length in a separate space 43, reach the magneticstrength changed in yoke 4 so that under equal current conditions, change yoke 4 to the suction size of armature 5, therefore reach instantaneous trip current setting; Wherein to stretch into the length between the biside plate 41,42 of yoke 4 more long for magnetic conductive pole 6, the Weakening degree in magnetic field is more big, make yoke 4 in excitation conductor is by same current situation that the suction of armature 5 is more little, therefore under armature 5 suction is met requirement of threading off by yoke 4, increase instantaneous trip electric current, otherwise reduce dropout electric current; Its structure is simple, and adjustment operation is convenient, and precision more easily controls.
Claims (7)
1. the isolating switch of an adjustable instantaneous trip electric current, include housing, and the clapper-type electrical apparatus release being located in housing, contact mechanism, described clapper-type electrical apparatus release includes tripping mechanism, excitation conductor, yoke and armature, described yoke comprises two blocks of side plates positioned opposite, separate space between being formed between biside plate, armature is arranged in housing through rotating shaft, extend along described shaft length direction and form the fitting surface wider than two pieces of described side plate distances in the bottom of armature, described fitting surface coordinates with the end face of two blocks of described side plates claps conjunction, the reseting elastic element making described fitting surface away from two pieces of described side plate end faces it is arranged with outside described rotating shaft, it is characterized in that: described yoke is provided with magnetic conductive pole along side plate septal direction described in two, magnetic conductive pole moves along its axis, the axial one end of magnetic conductive pole is through wherein side plate and stretches between yoke in separate space, the axial the other end of magnetic conductive pole stretches out a separate space, magnetic conductive pole has and drives magnetic conductive pole to move axially to regulate magnetic conductive pole to stretch into the insulation stretching into the degree of depth in one end in a separate space to regulate part.
2. the isolating switch of adjustable instantaneous trip electric current according to claim 1, it is characterized in that: on the side plate of described yoke, be provided with screw thread through hole, described insulation regulates the periphery of part to be provided with outside screw, insulation regulates screw thread through hole in outside screw and the yoke of part adaptive, magnetic conductive pole through insulation adjustment part screw thread spinning in screw thread through hole.
3. the isolating switch of adjustable instantaneous trip electric current according to claim 1 or 2, it is characterised in that: described insulation regulates part to be located at one end that magnetic conductive pole stretches out a separate space, and magnetic conductive pole stretches into the free end that separate space one end is and described side plate corresponding thereto separates.
4. the isolating switch of adjustable instantaneous trip electric current according to claim 1 or 2, it is characterised in that: described housing is provided with adjustment operation through hole, and the insulation on magnetic conductive pole regulates part to expose through adjustment operation through hole.
5. the isolating switch of adjustable instantaneous trip electric current according to claim 3, it is characterised in that: described housing is provided with adjustment operation through hole, and the insulation on magnetic conductive pole regulates part to expose through adjustment operation through hole.
6. the isolating switch of adjustable instantaneous trip electric current according to claim 1 or 2, it is characterised in that: the material of described yoke and armature is pure iron, and it is thick that the side plate thickness of yoke is greater than armature plate.
7. the isolating switch of adjustable instantaneous trip electric current according to claim 1, it is characterised in that: described armature is arranged on two side plates of described yoke by rotating shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610133485.0A CN105632848B (en) | 2016-03-09 | 2016-03-09 | The breaker of adjustable instantaneous trip electric current |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610133485.0A CN105632848B (en) | 2016-03-09 | 2016-03-09 | The breaker of adjustable instantaneous trip electric current |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105632848A true CN105632848A (en) | 2016-06-01 |
| CN105632848B CN105632848B (en) | 2018-05-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610133485.0A Active CN105632848B (en) | 2016-03-09 | 2016-03-09 | The breaker of adjustable instantaneous trip electric current |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106710980A (en) * | 2017-01-22 | 2017-05-24 | 德隆电气股份有限公司 | Miniature circuit breaker |
| CN107887237A (en) * | 2017-10-26 | 2018-04-06 | 上海良信电器股份有限公司 | The clapper-type electromagnetic electrical apparatus release of miniature circuit breaker |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009277412A (en) * | 2008-05-13 | 2009-11-26 | Kawamura Electric Inc | Excess current tripping mechanism |
| JP2010129237A (en) * | 2008-11-25 | 2010-06-10 | Panasonic Electric Works Denro Co Ltd | Circuit breaker |
| CN202796801U (en) * | 2012-09-29 | 2013-03-13 | 德力西电气有限公司 | Clapping type electromagnetic release |
| CN204497172U (en) * | 2015-04-28 | 2015-07-22 | 大全集团有限公司 | A kind of controllable electromagnetic trip gear adding magnetic conductor |
| CN205487998U (en) * | 2016-03-09 | 2016-08-17 | 乐清市万联电器有限公司 | Circuit breaker of adjustable instantaneous tripping current |
-
2016
- 2016-03-09 CN CN201610133485.0A patent/CN105632848B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009277412A (en) * | 2008-05-13 | 2009-11-26 | Kawamura Electric Inc | Excess current tripping mechanism |
| JP2010129237A (en) * | 2008-11-25 | 2010-06-10 | Panasonic Electric Works Denro Co Ltd | Circuit breaker |
| CN202796801U (en) * | 2012-09-29 | 2013-03-13 | 德力西电气有限公司 | Clapping type electromagnetic release |
| CN204497172U (en) * | 2015-04-28 | 2015-07-22 | 大全集团有限公司 | A kind of controllable electromagnetic trip gear adding magnetic conductor |
| CN205487998U (en) * | 2016-03-09 | 2016-08-17 | 乐清市万联电器有限公司 | Circuit breaker of adjustable instantaneous tripping current |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106710980A (en) * | 2017-01-22 | 2017-05-24 | 德隆电气股份有限公司 | Miniature circuit breaker |
| CN106710980B (en) * | 2017-01-22 | 2019-09-10 | 德隆电气股份有限公司 | A kind of miniature circuit breaker |
| CN107887237A (en) * | 2017-10-26 | 2018-04-06 | 上海良信电器股份有限公司 | The clapper-type electromagnetic electrical apparatus release of miniature circuit breaker |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105632848B (en) | 2018-05-08 |
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