CN202473792U - Moulded case circuit breaker - Google Patents
Moulded case circuit breaker Download PDFInfo
- Publication number
- CN202473792U CN202473792U CN2011205303604U CN201120530360U CN202473792U CN 202473792 U CN202473792 U CN 202473792U CN 2011205303604 U CN2011205303604 U CN 2011205303604U CN 201120530360 U CN201120530360 U CN 201120530360U CN 202473792 U CN202473792 U CN 202473792U
- Authority
- CN
- China
- Prior art keywords
- circuit breaker
- contact
- moulded case
- handle
- moving contact
- 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.)
- Expired - Fee Related
Links
- 230000003068 static effect Effects 0.000 claims abstract description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 17
- 210000003168 insulating cell Anatomy 0.000 claims description 5
- 230000004888 barrier function Effects 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 abstract 1
- 230000003750 conditioning effect Effects 0.000 description 4
- 230000009351 contact transmission Effects 0.000 description 3
- 230000001143 conditioned effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000001012 protector Effects 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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Abstract
The utility model relates to a circuit breaker, and especially relates to a moulded case circuit breaker. The moulded case circuit breaker mainly solves the technical problems that contact between a releaser and a jumper of the circuit breaker in the prior art is not convenient, a moving contact does not have a quick transmission speed when contacting with or releasing from a static contact, thus accidents may occur easily. The moulded case circuit breaker of the utility model comprises a moulded case; wherein, the moulded case is connected with a wire inlet terminal and a wire outlet terminal, the wire inlet terminal is connected with a static contact, the wire outlet terminal is contacted with a lock catch through an overload protection device; the moulded case is movably connected with a handle, a dialing piece which can be dialed by the handle is hinged in the moulded case, one end of the dialing piece is provided with a jumper which can be fastened by the lock catch; the handle is connected with a connecting rod through a spring, the connecting rod is connected with a moving contact which can be contacted with the static contact; the wire outlet terminal is communicated with the moving contact, and the moving contact is connected with a torsion spring.
Description
Technical field
The utility model relates to a kind of circuit breaker, especially relates to a kind of moulded case circuit breaker.
Background technology
Circuit breaker is the electric equipment of the overload, short circuit or the under voltage protection that are used for the AC and DC circuit, when overload, short circuit, can make the electric current disjunction in moment, and protection circuit and power-supply device are not damaged.Chinese patent discloses a kind of short circuit current protector (Granted publication number: CN 201032621Y) of breaker of plastic casing; It comprises instrument transformer, signal conditioning circuit, single-chip microcomputer and the actuator of preface connection successively; Each of wherein said instrument transformer and electrical network signal of telecommunication mutually connects, and in order to export the little current signal of corresponding each phase, signal conditioning circuit is in order to nurse one's health each little current signal; Export a plurality of conditioned signal; Breaker of plastic casing also comprises a simulation trip circuit, and it comprises: a plurality of amplifying circuits, its input are connected with each conditioned signal of signal conditioning circuit correspondingly; One comparison circuit has an input, and relatively holds and an output, and input is connected with the output of a plurality of amplifying circuits; Relatively end connects a reference signal, and output is connected with actuator, and the short circuit current protector of breaker of plastic casing also comprises a power supply; Its input is connected with said signal conditioning circuit; Its output is connected with single-chip microcomputer with actuator, and the simulation trip circuit also comprises a plurality of isolated components, is located at respectively between the output and comparison circuit input of each amplifying circuit; Isolated component is a diode, and the voltage of reference signal is between 2.OV～2.5V.But the dropout of this circuit breaker is inconvenient with contacting of tripping, and moving contact transmission speed when the touching fixed contact is perhaps thrown off fixed contact is unhappy, meets accident easily.
The utility model content
The utility model provides a kind of moulded case circuit breaker; It mainly is the inconvenience that contacts that solves dropout with the tripping of existing in prior technology circuit breaker; And moving contact the touching fixed contact or when throwing off fixed contact transmission speed unhappy, the technical problem that meets accident easily etc.
The above-mentioned technical problem of the utility model mainly is able to solve through following technical proposals:
A kind of moulded case circuit breaker of the utility model comprises plastic casing, is connected with input terminal and outlet terminal on the plastic casing; Described input terminal is connected with fixed contact, and outlet terminal has snap close through the overload protection arrangement contact, and plastic casing is connected with handle; Be hinged with the plectrum that to be stirred by handle in the plastic casing; Plectrum one end is provided with the tripping that can be fastened by snap close, and handle is connected with connecting rod through spring, and connecting rod is connected with the moving contact that can contact with fixed contact; Outlet terminal is communicated with moving contact, is connected with torsion spring on the moving contact.When handle was pulled downwards, handle was stirred plectrum and is moved downward, plectrum below tripping just can and then move downward and fasten with snap close.After handle was upwards pulled, after the handle spring process central pivot point of connecting rod, connecting rod received the pulling force of handle spring, and moving contact is rotation rapidly under the effect of connecting rod, thereby contacts with fixed contact, with the input terminal conducting.Input terminal and outlet terminal can be connected on the pedestal for screw, and moulding on the shell of input terminal, outlet terminal outer end can be sealed with sealing plug.Automatically snap close is opened when overload protection arrangement can make electric current excessive, made the tripping return.
As preferably, described overload protection arrangement includes the inductance coil that is communicated with outlet terminal, and inductance coil inside is provided with static iron core and moving iron core, and moving iron core is connected with the draw bar that can snap close be opened.When circuit is short-circuited electric current when excessive, even magnetic force is sent with static iron core in inductance coil energising back, will move iron core and hold, moving iron core just can drive the snap close link motion, can snap close be opened after the draw bar motion, makes tripping thread off, and completion is opened circuit.
As preferably, the plastic casing inside of described fixed contact and moving contact contact area is provided with arc control device, is provided with flash barrier between arc control device and the input terminal.The spark that arc control device produce in the time of can be with the touching of fixed contact and moving contact is eliminated.
As preferably, described input terminal and outlet terminal place all are provided with insulating cell.Insulating cell can prevent in input terminal and the electric leakage of outlet terminal place.
Therefore, the dropout that the utlity model has circuit breaker is comparatively convenient with contacting of tripping, and moving contact the touching fixed contact or when throwing off fixed contact transmission speed very fast, be not easy to meet accident characteristics such as simple and reasonable for structure.
Description of drawings
Accompanying drawing 1 is a kind of structural representation of the utility model;
Accompanying drawing 2 is side internal structure sketch mapes of Fig. 1.
Parts, position and numbering among the figure: plastic casing 1, input terminal 2, outlet terminal 3, fixed contact 4, snap close 5, handle 6, plectrum 7, tripping 8, spring 9, connecting rod 10, moving contact 11, torsion spring 12, inductance coil 13, static iron core 14, moving iron core 15, draw bar 16, arc control device 17, flash barrier 18, insulating cell 19.
Embodiment
Pass through embodiment below, and combine accompanying drawing, do further bright specifically the technical scheme of the utility model.
Embodiment: a kind of moulded case circuit breaker of this example, like Fig. 1, Fig. 2, a plastic casing 1 is arranged, be connected with input terminal 2 and outlet terminal 3 on the plastic casing, input terminal and outlet terminal place all are provided with insulating cell 19.Input terminal is connected with fixed contact 4; Outlet terminal has snap close 5 through the overload protection arrangement contact; Overload protection arrangement includes the inductance coil 13 that is communicated with outlet terminal, and inductance coil inside is provided with static iron core 14 and moving iron core 15, and moving iron core is connected with the draw bar 16 that can snap close be opened.Plastic casing is connected with handle 6; Be hinged with the plectrum 7 that to be stirred by handle in the plastic casing; Plectrum one end is provided with the tripping 8 that can be fastened by snap close, and handle 6 is connected with connecting rod 10 through spring 9, and connecting rod is connected with the moving contact 11 that can contact with fixed contact; Outlet terminal is communicated with moving contact, is connected with torsion spring 12 on the moving contact.The plastic casing inside of fixed contact and moving contact contact area is provided with arc control device 17, is provided with flash barrier 18 between arc control device and the input terminal.
During use, earlier handle 6 is down pulled, handle is stirred plectrum 7 and is moved downward, and the tripping 8 on the plectrum is and snap close 5 snaps together.Handle is upwards pulled, after the central pivot point of handle spring through last connecting rod, lower link, lower link receives the pulling force of handle spring again, and moving contact is rotation rapidly under the effect of lower link, thereby moving contact contacts with fixed contact 4, input terminal 2 conductings.When circuit is short-circuited electric current when excessive, make static iron core 14 produce magnetic force after inductance coil 13 energisings, will move iron core 15 and hold, moving iron core moves downward the back and drives draw bar 16 and rotate, thereby snap close 5 is opened, and tripping 8 is threaded off, thus open-circuit line.The electric repulsion that moving contact 11 places produce is greater than the torsion of torsion spring, and moving contact is promptly by pop into position, open-circuit line.
The above is merely the specific embodiment of the utility model; But the architectural feature of the utility model is not limited thereto; Any those skilled in the art is in the field of the utility model, and variation of being done or modification all are encompassed among the claim of the utility model.
Claims (4)
1. moulded case circuit breaker; Comprise plastic casing (1), be connected with input terminal (2) and outlet terminal (3) on the plastic casing, it is characterized in that described input terminal (2) is connected with fixed contact (4); Outlet terminal (3) has snap close (5) through the overload protection arrangement contact; Plastic casing (1) is connected with handle (6), is hinged with the plectrum (7) that can be stirred by handle in the plastic casing, and plectrum one end is provided with the tripping (8) that can be fastened by snap close; Handle (6) is connected with connecting rod (10) through spring (9); Connecting rod is connected with the moving contact (11) that can contact with fixed contact, and outlet terminal is communicated with moving contact, is connected with torsion spring (12) on the moving contact.
2. a kind of moulded case circuit breaker according to claim 1; It is characterized in that described overload protection arrangement includes the inductance coil (13) that is communicated with outlet terminal (3); Inductance coil inside is provided with static iron core (14) and moving iron core (15), and moving iron core is connected with the draw bar (16) that can snap close be opened.
3. a kind of moulded case circuit breaker according to claim 1 and 2; It is characterized in that the described fixed contact (4) and plastic casing (1) inside of moving contact (11) contact area are provided with arc control device (17), are provided with flash barrier (18) between arc control device and the input terminal (2).
4. a kind of moulded case circuit breaker according to claim 1 and 2 is characterized in that described input terminal (2) and outlet terminal (3) locate all to be provided with insulating cell (19).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205303604U CN202473792U (en) | 2011-12-19 | 2011-12-19 | Moulded case circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205303604U CN202473792U (en) | 2011-12-19 | 2011-12-19 | Moulded case circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202473792U true CN202473792U (en) | 2012-10-03 |
Family
ID=46921935
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205303604U Expired - Fee Related CN202473792U (en) | 2011-12-19 | 2011-12-19 | Moulded case circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202473792U (en) |
-
2011
- 2011-12-19 CN CN2011205303604U patent/CN202473792U/en not_active Expired - Fee Related
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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: 20121003 Termination date: 20141219 |
|
| EXPY | Termination of patent right or utility model |