CN205376440U - Circuit breaker - Google Patents
Circuit breaker Download PDFInfo
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- CN205376440U CN205376440U CN201620010385.4U CN201620010385U CN205376440U CN 205376440 U CN205376440 U CN 205376440U CN 201620010385 U CN201620010385 U CN 201620010385U CN 205376440 U CN205376440 U CN 205376440U
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- single pole
- pole units
- static contact
- chopper
- snap close
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Abstract
The utility model discloses a circuit breaker, including operating device, one or more monopole unit, one or more electromagnetic type short -circuit protection mechanism. The linkage of moving contact in operating device and each the monopole unit with realize between moving contact and the static contact in each monopole unit deciliter, every monopole unit sets up with a corresponding electromagnetic type short -circuit protection mechanism cooperation. Every electromagnetic type short -circuit protection mechanism includes: the iron core sets up the static contact top in the monopole unit that sets up with this electromagnetic type short -circuit protection mechanism cooperation, hasp arresting gear sets up in static contact below, through axle hinged to inside the monopole unit, elastic element sets up between hasp actuating device and monopole unit. The iron core is magnetized and is produced electromagnetic attraction when fault current passes through the static contact, and when electromagnetic attraction is greater than elastic element's counter -force, the hasp actuating device rotates to the iron core direction, hasp among the actuator disk operating device make in the monopole unit moving contact and static contact branch absolutely to cut off fault current.
Description
Technical field
The present invention relates to Low Voltage Electrical Apparatus, particularly relate to a kind of chopper.
Background technology
Chopper is the important electric elements in Low Voltage Electrical Apparatus, as the electric elements of protection low-voltage distribution system, its can on-load on-off circuit, again can automatic trip under short circuit, overload and low-voltage (decompression) condition.Short-circuit protection is mechanism particularly important in chopper, because the length of the movement time of short-circuit protection can directly affect the breaking capacity of chopper.
Existing rotary type double-breakpoint breaker of plastic casing mainly includes operating mechanism, one or more single pole units and electric magnet short-circuit protection, wherein: each single pole units includes housing, arc-chutes, static contact and moving contact；Multiple single pole units constitute a multipole circuit breaker side by side；Operating mechanism is located in one of in single pole units, by the moving contact linkage in axle and each single pole units, divides realizing the conjunction between the contact in each single pole units；Electric magnet short-circuit protection includes iron core, flexible member and snap close and activates device, and snap close activates device and includes armature location-plate and armature.
Chinese invention patent application CN101582353A discloses a kind of electromagnetic short current protective mechanism being used in chopper.As Figure 7-8, this electromagnetic short current protective mechanism is configured as follows: iron core is U-shaped, and opening upwards is fixed on the static contact in single pole units；Snap close activates device and is positioned at above static contact, and is fixed on the housing of single pole units；Flexible member is supported on static contact and snap close activates between device；When a short circuit occurs, iron core attracts armature, and armature overcomes the counter-force of flexible member, activates the snap close of operating mechanism with moving armature location-plate, makes circuit breaker trip.
For three-pole breaker, the single pole units that operating mechanism is positioned at is referred to as B pole unit, and two other single pole units is referred to as A pole unit and C pole unit.In the chopper shown in Fig. 7-8, operating mechanism overlaps with the placement space of electromagnetic short current protective mechanism, and this will cause that only A, C pole unit can install electromagnetic short current protective mechanism, and B pole unit cannot install electromagnetic short current protective mechanism.When B pole unit generation shorted to earth, owing to B pole unit does not have electromagnetic short current protective mechanism, so the movement time of B pole unit will be long, thus have impact on the interrupting performance of chopper and reliability.When AB, BC pole is short-circuited, owing to only having a pole equipped with electromagnetic short current protective mechanism so can be only formed single ply protective, if electromagnetic short current protective mechanism occurs abnormal, just cannot quickly shut off circuit, affecting the reliability of chopper.And when AC pole is short-circuited, owing to AC pole unit is respectively arranged with electromagnetic short current protective mechanism, it is possible to form duplicate protection, the reliability of such chopper is just higher.
Summary of the invention
One or more problems in view of the above, the invention provides the chopper of a kind of novelty.
Chopper according to embodiments of the present invention, including operating mechanism, one or more single pole units and one or more electromagnetic short current protective mechanism.Wherein, operating mechanism and the moving contact in each single pole units linkage with realize between moving contact and the static contact in each single pole units deciliter, each single pole units is equipped with a corresponding electromagnetic short current protective mechanism.Each electromagnetic short current protective mechanism includes: iron core, is arranged at above the static contact in the single pole units being equipped with this electromagnetic short current protective mechanism；Snap close brake unit, is arranged at below static contact, is located at inside single pole units by axle hinge；And flexible member, it is arranged at snap close and activates between device and single pole units.When fault current is by static contact, iron core is magnetized generation electromagnetic attraction, when electromagnetic attraction is more than the counter-force of flexible member, snap close activates device and rotates to iron core direction, and the snap close activated in operating mechanism makes the moving contact in single pole units and static contact disjunction, thus disengagement failure electric current.When fault current is cut-off, electromagnetic attraction disappears, and snap close activates device under the counter-force effect of flexible member, returns to initial position.
In chopper according to embodiments of the present invention, snap close activates device and includes armature and armature location-plate, wherein, armature location-plate is L-shaped, one end is positioning end, the other end is actuation ends, armature is fixed on positioning end, and the snap fit of actuation ends and operating mechanism realizes the disjunction of the moving contact in single pole units and static contact.Specifically, positioning end being provided with one or more boss, armature is provided with the through hole mated with boss, armature is fixed on positioning end via one or more boss and through hole.
In chopper according to embodiments of the present invention, flexible member is L-shaped, and its one end coordinates spacing with the housing wall of single pole units, and the other end coordinates with the locating slot in armature location-plate, and now flexible member torsional deflection makes snap close activate device away from iron core.
In chopper according to embodiments of the present invention, the housing of single pole units is provided with and is positioned at die cavity below static contact, activate device installation and motion for snap close.
Chopper according to embodiments of the present invention is for conventional circuit breaker, and overall volume is less, and can shorten the drop-away time of chopper, improve the reliability and stability of chopper.
Accompanying drawing explanation
The drawings below of the application is used for understanding the application in this as the part of the application.Embodiment shown in accompanying drawing and description thereof are used for explaining principles of the invention.In the accompanying drawings:
Fig. 1 is the organigram of chopper according to embodiments of the present invention；
Fig. 2 is the assembling structure schematic diagram of the single pole units in the chopper shown in Fig. 1, electromagnetic short current protective mechanism, conductive plate and fixture；
Fig. 3 is the organigram of the left shell of the single pole units in the chopper shown in Fig. 1；
Fig. 4 is the organigram of the right shell body of the single pole units in the chopper shown in Fig. 1；
Fig. 5 is the organigram of the armature location-plate in electromagnetic short current protective mechanism according to embodiments of the present invention；
Fig. 6 is the operation principle schematic diagram of the chopper of the embodiment of the present invention；
Fig. 7-8 is existing chopper and the organigram of electromagnetic short current protective mechanism therein.
Detailed description of the invention
Feature and the exemplary embodiment of various aspects of the invention are described more fully below.In the following detailed description, it is proposed that many details, in order to complete understanding of the present invention is provided.But, it will be apparent to those skilled in the art that the present invention can implement when some details in not needing these details.Below the description of embodiment is only used to by illustrating that the example of the present invention provides being better understood from the present invention.The present invention is never limited to any concrete configuration set forth below, but covers any amendment, replacement and the improvement of element and parts under the premise of without departing from the spirit of the present invention.In the the accompanying drawings and the following description, it does not have known structure and technology are shown, in order to avoid the present invention causes unnecessary obscuring.
In order to be more fully understood that the present invention, it is described in detail below in conjunction with Fig. 1-6 couples chopper according to embodiments of the present invention and the electromagnetic short current protective mechanism being used in chopper.
Fig. 1 is the organigram of chopper according to embodiments of the present invention.As it is shown in figure 1, chopper according to embodiments of the present invention includes 1, three single pole units of operating mechanism, 3, three conductive plates 4 of 2, three electromagnetic short current protective mechanisms and three fixtures 5.Wherein, in the single pole units 2 that operating mechanism 1 is centrally located, by the moving contact linkage in axle and each single pole units 2, divide realizing the conjunction between the contact in each single pole units 2；Three single pole units 2 constitute a three-pole breaker side by side；Three electromagnetic short current protective mechanisms 3 lay respectively at upper static contact one end of three single pole units 2；Three conductive plates 4 are connected with the upper static contact of three single pole units 2 respectively by corresponding fixture 5.It should be noted that only illustrate three-pole breaker exemplarily here, but any number of single pole units and the electromagnetic short current protective mechanism, conductive plate and the fixture that are equipped with single pole units can be arranged as required to.
Fig. 2 is the assembling structure schematic diagram of the single pole units in the chopper shown in Fig. 1, electromagnetic short current protective mechanism, conductive plate and fixture.Fig. 3 is the organigram of the left shell of the single pole units in the chopper shown in Fig. 1.Fig. 4 is the organigram of the right shell body of the single pole units in the chopper shown in Fig. 1.In conjunction with Fig. 2-4 it can be seen that each single pole units 2 includes the first housing (that is, left shell) 21 and the second housing (that is, right shell body) 22, moving contact 23, upper static contact 24 and the lower static contact 25 that are equipped with face-to-face；Electromagnetic short current protective mechanism 3 includes iron core 31, snap close activates device 32, flexible member 33, axle 34 and fixing plate 35.Wherein, iron core 31 is U-shaped, and Open Side Down, is positioned at the top of conductive plate 4, and conductive plate 4 is positioned at above upper static contact 24；The fixing plate 35 of upper static contact 24 arranged below, fixing plate 35 is fixed on the first draw-in groove 211 on the first housing 21 and in the second draw-in groove 221 on the second housing 22 by end face；Fixture 5 is sequentially passed through iron core 31, conductive plate 4 and upper static contact 24 and they threes is compressed by fixing plate 35.
Further, in conjunction with Fig. 2-4 it can be seen that snap close activates device 32 includes armature 321 and armature location-plate 322；The first housing 21 below upper static contact 24 and in the second housing 22, has and activates, for snap close, the first die cavity 212 and the second die cavity 222 that device 32 assembles and moves；There is a blind hole 213 in first die cavity 212, in the second die cavity 222, have a through hole 223；Sequentially pass through through hole 223, snap close actuating device 32, flexible member 33, blind hole 213 with axle 34, snap close is activated device 32 hinge and is located in single pole units 2；Flexible member 33 one end coordinates spacing with first housing wall the 214, second housing wall 224, and the other end coordinates with the locating slot in armature location-plate 322.
Fig. 5 is the organigram of the armature location-plate in electromagnetic short current protective mechanism according to embodiments of the present invention.In conjunction with Fig. 2 to Fig. 5 it can be seen that armature location-plate 322 l-shaped；One end of armature location-plate 322 is positioning end 3222；Positioning end 3222 has two boss 3223；Armature 321 has the through hole coordinated with boss 3223；Armature 321 is fixed in armature location-plate 322；The other end of armature location-plate 322 is actuation ends 3224, coordinates with snap close 11, it is achieved the dropout of operating mechanism 1；First die cavity 212 of the first housing 21 has the first slot to make way 215 and the second slot to make way 225 that shape is consistent with the second die cavity 222 both sides of the second housing 22, for stepping down to actuation ends 3224 motion.
Fig. 6 is the operation principle schematic diagram of the chopper of the embodiment of the present invention.As shown in Figure 6, when short circuit occurs, when fault current is by upper static contact 24 and conductive plate 4, iron core 31 and armature 321 are magnetized, and produce electromagnetic attraction；When electromagnetic attraction is more than the counter-force of flexible member 33, snap close activates device 32 and rotates to iron core 31 direction around axle 34, and snap close activates after device 32 rotates to predetermined angle and activates snap close 11, makes the operating mechanism 1 of chopper unlock rapidly dropout, realize circuit breaker tripping, thus disengagement failure electric current；After pending fault failure of current, electromagnetic attraction also disappears therewith, and snap close activates device 32 under the counter-force effect of flexible member 33, returns to initial position.
In sum, chopper according to embodiments of the present invention is relative to conventional circuit breaker, and overall volume is less, and can shorten the drop-away time of chopper, improve the reliability and stability of chopper.
The present invention is described above by reference to specific embodiments of the invention, but those skilled in the art all understand, these specific embodiments can be carried out various amendment, combination and change, without departing from the spirit and scope of the present invention limited by claims or its equivalent.Additionally, any signal arrows in accompanying drawing should be to be considered merely as exemplary, rather than restrictive, indicate unless otherwise specifically.When term be also contemplated as the ability made separately or in combination do not know time, the combination of assembly or step also will be considered as described.
Claims (6)
1. a chopper; this chopper includes operating mechanism, one or more single pole units and one or more electromagnetic short current protective mechanism; wherein; in described operating mechanism and each single pole units moving contact linkage with realize between moving contact and the static contact in each single pole units deciliter; each single pole units is equipped with a corresponding electromagnetic short current protective mechanism, and each electromagnetic short current protective mechanism includes:
Iron core, is arranged at above the static contact in the single pole units being equipped with this electromagnetic short current protective mechanism；
Snap close brake unit, is arranged at below described static contact, is located at inside described single pole units by axle hinge；
Flexible member, is arranged at described snap close and activates between device and described single pole units, wherein
When fault current is by described static contact, described iron core is magnetized generation electromagnetic attraction, when described electromagnetic attraction is more than the counter-force of described flexible member, described snap close activates device and rotates to described iron core direction, activate the snap close in described operating mechanism and make the moving contact in described single pole units and static contact disjunction, thus cutting off described fault current.
2. chopper as claimed in claim 1, it is characterised in that described electromagnetic attraction disappears when described fault current is cut-off, described snap close activates device under the counter-force effect of described flexible member, returns to initial position.
3. chopper as claimed in claim 1, it is characterized in that, described snap close activates device and includes armature and armature location-plate, wherein, described armature location-plate is L-shaped, one end is positioning end, the other end is actuation ends, and described armature is fixed on described positioning end, and the snap fit of described actuation ends and described operating mechanism realizes the disjunction of the moving contact in described single pole units and static contact.
4. chopper as claimed in claim 3, it is characterized in that, being provided with one or more boss on described positioning end, described armature is provided with the through hole mated with the one or more boss, described armature is fixed on described positioning end via the one or more boss and described through hole.
5. chopper as claimed in claim 3, it is characterized in that, described flexible member is L-shaped, its one end coordinates spacing with the housing wall of described single pole units, the other end coordinates with the locating slot in described armature location-plate, and now described flexible member torsional deflection makes described snap close activate device away from described iron core.
6. chopper as claimed in claim 5, it is characterised in that the housing of described single pole units is provided with and is positioned at die cavity below described static contact, activate device installation and motion for described snap close.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620010385.4U CN205376440U (en) | 2016-01-06 | 2016-01-06 | Circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620010385.4U CN205376440U (en) | 2016-01-06 | 2016-01-06 | Circuit breaker |
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| Publication Number | Publication Date |
|---|---|
| CN205376440U true CN205376440U (en) | 2016-07-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620010385.4U Active CN205376440U (en) | 2016-01-06 | 2016-01-06 | Circuit breaker |
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| CN (1) | CN205376440U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105428175A (en) * | 2016-01-06 | 2016-03-23 | 北京人民电器厂有限公司 | Circuit breaker |
| WO2023066174A1 (en) * | 2021-10-20 | 2023-04-27 | 上海正泰智能科技有限公司 | Circuit breaker |
-
2016
- 2016-01-06 CN CN201620010385.4U patent/CN205376440U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105428175A (en) * | 2016-01-06 | 2016-03-23 | 北京人民电器厂有限公司 | Circuit breaker |
| WO2023066174A1 (en) * | 2021-10-20 | 2023-04-27 | 上海正泰智能科技有限公司 | Circuit breaker |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |