CN203931974U - The magnetictrip of circuit breaker - Google Patents
The magnetictrip of circuit breaker Download PDFInfo
- Publication number
- CN203931974U CN203931974U CN201420274007.8U CN201420274007U CN203931974U CN 203931974 U CN203931974 U CN 203931974U CN 201420274007 U CN201420274007 U CN 201420274007U CN 203931974 U CN203931974 U CN 203931974U
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- CN
- China
- Prior art keywords
- circuit breaker
- magnetictrip
- iron core
- coil
- current coil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
A magnetictrip for circuit breaker, comprises coil rack, static iron core, moving iron core, spring and push rod, and spring housing is located on push rod, and moving iron core is arranged on the two ends of push rod; Also comprise current coil and potential winding; Current coil is wound in the outer rim of coil rack, and the end of coil rack is provided with the limiting through hole of passing for the wire of current coil; The wire via through holes of current coil passes with the control circuit board of circuit breaker and is connected; Potential winding is wound in the outer rim of current coil and coil rack; The lead-in wire of potential winding and the welding of the main circuit of circuit breaker.Adopt current coil and potential winding to share same magnetic circuit system, on a magnetictrip, realize short-circuit protection and electric leakage or overvoltage/undervoltage defencive function simultaneously, simple in structure, be easy to processing and manufacturing, can reduce production costs and stable prod performance.Magnetictrip is simplified more, has not only saved the cost of raw material, has also saved processing cost, makes the width of miniature circuit breaker be reduced to 18mm.
Description
Technical field
The utility model belongs to low voltage electrical apparatus technology field, relates to a kind of magnetictrip of circuit breaker.
Background technology
Magnetictrip is mainly taken protective effect in low-voltage circuit breaker.It is connected with protected circuit, and while passing through normal current in circuit, circuit breaker normally moves; While there is short trouble in circuit, electric current exceedes the several times of normal current, and magnetictrip is threaded off, and circuit breaker disconnects.
Miniature circuit breaker has overload, short circuit and aftercurrent action protecting function conventionally, short-circuit protection function is responded to and sets up magnetic field by comprising the magnetictrip that coil, armature, magnet yoke element etc. form, thereby makes armature motion and promote breaker mechanism turn-off current loop to realize; Aftercurrent action protecting function is responded to residual current by zero sequence current mutual inductor, and in the time that residual current is greater than set point, residual current acting magnetictrip moves and promotes breaker mechanism turn-off current loop and realizes.
The overcurrent trip of existing circuit breaker and leakage tripping device are all separately independently, this just requires circuit breaker inside will have enough large space to hold two independently releases, finally being reflected in circuit breaker profile is exactly that volume is larger, and two independently release make the cost of whole circuit breaker higher.
Summary of the invention
For overcoming above-mentioned deficiency of the prior art, it is a kind of simple in structure that the utility model object is to provide, the magnetictrip of the circuit breaker that cost is lower, properties of product are stable.
For achieving the above object and other relevant objects, the utility model provides a kind of magnetictrip of circuit breaker, comprise coil rack, static iron core, moving iron core, spring and push rod, described static iron core, moving iron core, spring and push rod are arranged on described coil rack inside; Described spring housing is located on push rod, and described moving iron core is arranged on the two ends of push rod; Also comprise current coil and potential winding; Described current coil is wound in the outer rim of described coil rack, and the end of described coil rack is provided with the limiting through hole of passing for the wire of current coil; The wire via through holes of described current coil passes with the control circuit board of circuit breaker and is connected; Described potential winding is wound in the outer rim of described current coil and coil rack; The lead-in wire of described potential winding and the welding of the main circuit of circuit breaker.
In such scheme, related content is explained as follows:
1, in such scheme, the wire of described current coil is two, and what described limiting through hole was corresponding is also two;
2, in such scheme, the lead-in wire of described potential winding is also two, and these two lead-in wires weld respectively at main circuit;
3,, in such scheme, one end of described coil rack is provided with the dome platform coordinating with circuit breaker base;
4,, in such scheme, the end of described static iron core is provided with the spacing round platform coordinating with circuit breaker base;
The utility model operation principle: the magnetictrip that adopts the utility model structure, in the time that circuit is short-circuited fault, current coil produces electromagnetic force, thereby force moving iron core to overcome compression stress and the static iron core adhesive of spring, force promotion push rod to travel forward simultaneously, and then promote magnetictrip tripping, and making breaker mechanism release, circuit breaker cut-offs; When circuit the leakage current fault set occurs or when overvoltage/undervoltage fault, current coil does not produce electromagnetic force, and potential winding produces electromagnetic force, thereby force shared moving iron core to overcome compression stress and the static iron core adhesive of spring, force promotion push rod to travel forward simultaneously, and then promote magnetictrip tripping, and making breaker mechanism release, circuit breaker cut-offs; This just can realize short-circuit protection and electric leakage or overvoltage/undervoltage protection simultaneously.Compare adopt two independently release have that volume is little, advantages of simple structure and simple.
Because technique scheme is used, the advantage that the utility model compared with prior art has is:
1, the utility model is realized short-circuit protection and electric leakage or overvoltage/undervoltage defencive function on a magnetictrip simultaneously, simple in structure, is easy to processing and manufacturing, can reduce production costs and stable prod performance;
2, the utility model adopts current coil and potential winding to share a magnetic circuit system, and magnetictrip is simplified more, reduces part kind, has not only saved the cost of raw material, has also saved processing cost, makes the width of miniature circuit breaker be reduced to 18mm.
Brief description of the drawings
Below in conjunction with accompanying drawing and specific embodiments, the utility model is described in further detail.
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the utility model axle geodesic structure schematic diagram.
Fig. 3 is the left side schematic diagram being assemblied on pedestal of the present utility model.
Fig. 4 is the right side schematic diagram being assemblied on pedestal of the present utility model.
Fig. 5 is the installation diagram of magnetictrip of the present utility model.
Fig. 6 is use embodiment schematic diagram of the present utility model.
Embodiment
By particular specific embodiment, execution mode of the present utility model is described below, person skilled in the art scholar can understand other advantages of the present utility model and effect easily by the disclosed content of this specification.
Refer to Fig. 1 to Fig. 6.Notice, appended graphic the illustrated structure of this specification, ratio, size etc., all contents in order to coordinate specification to disclose only, understand and read for person skilled in the art scholar, not in order to limit the enforceable qualifications of the utility model, therefore the not technical essential meaning of tool, the adjustment of the modification of any structure, the change of proportionate relationship or size, do not affecting under effect that the utility model can produce and the object that can reach, all should still drop on the technology contents that the utility model discloses and obtain in the scope that can contain.Simultaneously, in this specification, quote as " on ", the term of D score, " left side ", " right side ", " centre " and " " etc., also only for ease of understanding of narrating, but not in order to limit the enforceable scope of the utility model, the change of its relativeness or adjustment, changing under technology contents, when being also considered as the enforceable category of the utility model without essence.
As shown in Figures 1 to 6, a kind of magnetictrip of circuit breaker, comprises coil rack 1, static iron core 7, moving iron core 2, spring 5 and push rod 6, and described static iron core 7, moving iron core 2, spring 5 and push rod 6 are arranged on described coil rack 1 inside; Described spring 5 is set on push rod 6, and described moving iron core 2 is arranged on the two ends of push rod 6; Also comprise current coil 4 and potential winding 3; Described current coil 4 is wound in the outer rim of described coil rack 1, and the end of described coil rack 1 is provided with the limiting through hole 12 of passing for the wire 41 of current coil 4; The wire via through holes 12 of described current coil 4 passes with the control circuit board of circuit breaker and is connected; Described potential winding 3 is wound in the outer rim of described current coil 4 and coil rack 1; The lead-in wire 31 of described potential winding 3 welds with the main circuit of circuit breaker.
The wire 41 of described current coil 4 is two, described limiting through hole 12 correspondences be also two.
The lead-in wire 31 of described potential winding 3 is also two, and these two lead-in wires 31 weld with main circuit respectively.
One end of described coil rack 1 is provided with the dome platform 11 coordinating with circuit breaker base 8.
The end of described static iron core 7 is provided with the spacing round platform 71 coordinating with circuit breaker base 8.
As shown in Figure 3, Figure 4, pedestal 8 is provided with the groove 81 coordinating with the dome platform 11 on coil rack 1, the limited impression 83 coordinating with the spacing round platform 71 of static iron core 7 ends, thus spacing and fix whole magnetictrip.Bottom at groove 81 is provided with " U " type groove 82, is somebody's turn to do the two piece wires 41 of " U " type groove 82 for fixing and guide current coil 4.
Adopt the magnetictrip of said structure, in the time that circuit is short-circuited fault, current coil 4 produces electromagnetic force, thereby force moving iron core 2 to overcome compression stress and static iron core 7 adhesives of spring 5, force promotion push rod 6 to travel forward simultaneously, and then promote magnetictrip tripping, and making breaker mechanism release, circuit breaker cut-offs; When circuit the leakage current fault set occurs or when overvoltage/undervoltage fault, current coil 4 does not produce electromagnetic force, and potential winding 3 produces electromagnetic force, thereby force shared moving iron core 2 to overcome compression stress and static iron core 7 adhesives of spring 5, force promotion push rod 6 to travel forward simultaneously, and then promote magnetictrip tripping, and making breaker mechanism release, circuit breaker cut-offs; This just can realize short-circuit protection and electric leakage or overvoltage/undervoltage protection simultaneously.Compare adopt two independently release have that volume is little, advantages of simple structure and simple.
Above-described embodiment is illustrative principle of the present utility model and effect thereof only, but not for limiting the utility model.Any person skilled in the art scholar all can, under spirit of the present utility model and category, modify or change above-described embodiment.Therefore, have in technical field under such as and conventionally know that the knowledgeable modifies or changes not departing from all equivalences that complete under spirit that the utility model discloses and technological thought, must be contained by claim of the present utility model.
Claims (5)
1. a magnetictrip for circuit breaker, comprises coil rack, static iron core, moving iron core, spring and push rod, it is characterized in that: described static iron core, moving iron core, spring and push rod are arranged on described coil rack inside; Described spring housing is located on push rod, and described moving iron core is arranged on the two ends of push rod; Also comprise current coil and potential winding; Described current coil is wound in the outer rim of described coil rack, and the end of described coil rack is provided with the limiting through hole of passing for the wire of current coil; The wire via through holes of described current coil passes with the control circuit board of circuit breaker and is connected; Described potential winding is wound in the outer rim of described current coil and coil rack; The lead-in wire of described potential winding and the welding of the main circuit of circuit breaker.
2. the magnetictrip of circuit breaker according to claim 1, is characterized in that: the wire of described current coil is two, and what described limiting through hole was corresponding is also two.
3. the magnetictrip of circuit breaker according to claim 1, is characterized in that: the lead-in wire of described potential winding is also two, and these two lead-in wires weld with main circuit respectively.
4. the magnetictrip of circuit breaker according to claim 1, is characterized in that: one end of described coil rack is provided with the dome platform coordinating with circuit breaker base.
5. the magnetictrip of circuit breaker according to claim 1, is characterized in that: the end of described static iron core is provided with the spacing round platform coordinating with circuit breaker base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420274007.8U CN203931974U (en) | 2014-05-26 | 2014-05-26 | The magnetictrip of circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420274007.8U CN203931974U (en) | 2014-05-26 | 2014-05-26 | The magnetictrip of circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203931974U true CN203931974U (en) | 2014-11-05 |
Family
ID=51827745
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420274007.8U Expired - Fee Related CN203931974U (en) | 2014-05-26 | 2014-05-26 | The magnetictrip of circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203931974U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106531580A (en) * | 2016-11-09 | 2017-03-22 | 首瑞（天津）电气设备有限公司 | Micro breaker and distribution system |
| WO2017185932A1 (en) * | 2016-04-27 | 2017-11-02 | 乐清市也为电气有限公司 | Trip system integrating leakage trip and electromagnetic trip |
| CN111916318A (en) * | 2020-09-16 | 2020-11-10 | 美高电气科技有限公司 | Double-electromagnetic drive type single-pole circuit breaker |
-
2014
- 2014-05-26 CN CN201420274007.8U patent/CN203931974U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017185932A1 (en) * | 2016-04-27 | 2017-11-02 | 乐清市也为电气有限公司 | Trip system integrating leakage trip and electromagnetic trip |
| CN106531580A (en) * | 2016-11-09 | 2017-03-22 | 首瑞（天津）电气设备有限公司 | Micro breaker and distribution system |
| CN111916318A (en) * | 2020-09-16 | 2020-11-10 | 美高电气科技有限公司 | Double-electromagnetic drive type single-pole circuit breaker |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141105 Termination date: 20170526 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |