CN201622990U - Moulded case circuit breaker - Google Patents
Moulded case circuit breaker Download PDFInfo
- Publication number
- CN201622990U CN201622990U CN2009203190676U CN200920319067U CN201622990U CN 201622990 U CN201622990 U CN 201622990U CN 2009203190676 U CN2009203190676 U CN 2009203190676U CN 200920319067 U CN200920319067 U CN 200920319067U CN 201622990 U CN201622990 U CN 201622990U
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- China
- Prior art keywords
- contact
- handle
- circuit breaker
- outlet terminal
- moving contact
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Abstract
The utility model relates to a circuit breaker, in particular to a moulded case circuit breaker, which mainly solves the technical problem in the prior art that the contact of the trip and the jump of the breaker is not convenient, and the driving velocity of the moving contact is not fast when contacting the static contact or tripping off the static contact, and an accident is easy to occur. The circuit breaker comprises a moulded case which is connected with an input terminal and an outlet terminal, and is characterized in that the input terminal is connected with a static contact, and the outlet terminal is in contact with a lock catch through an overload protective device; the moulded case is movably connected with a handle, and the inside of the moulded case is hinged with a pick capable of being picked by the handle; one end of the pick is provided with a jump capable of being buckled by the lock catch; the handle is connected with an upper connecting rod and a lower connecting rod through a spring; the lock catch is positioned below the connection point of the spring and the upper connecting rod; the lower connecting rod is connected with a moving contact capable of contacting with the static contact; and the 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 to the isostructural improvement of mold cased 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 the instrument transformer of preface connection successively, signal conditioning circuit, single-chip microcomputer and actuator, each of wherein said instrument transformer and electrical network signal of telecommunication mutually connects, 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, 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; one relatively holds and an output; input is connected with the output of a plurality of amplifying circuits; relatively end connects a reference signal; output is connected with actuator; the short circuit current protector of breaker of plastic casing also comprises a power supply; its input is connected with described signal conditioning circuit; its output is connected with single-chip microcomputer with actuator; the simulation trip circuit also comprises a plurality of isolated components; be 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 2.0V～2.5V.But the dropout of this circuit breaker is inconvenient with contacting of tripping, and moving contact transmission speed when touching fixed contact or disengagement fixed contact is unhappy, meets accident easily.
The utility model content
The utility model technical issues that need to address provide a kind of mold cased 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 at the touching fixed contact or when throwing off fixed contact transmission speed unhappy, the technical problem that meets accident easily etc.
Above-mentioned technical problem of the present utility model is mainly solved by following technical proposals:
Mold cased circuit breaker of the present utility model; comprise and mould shell; mould and be connected with input terminal and outlet terminal on the shell; it is characterized in that described input terminal is connected with fixed contact; outlet terminal has snap close by the overload protection arrangement contact; outlet terminal is communicated with moving contact; mould shell and be connected with handle; mould and be hinged with the plectrum that to be stirred by handle in the shell; plectrum one end is provided with the tripping that can be fastened by snap close, and handle is connected with connecting rod and lower link by spring, and snap close is positioned at the below of spring and last rod connection point; lower link is connected with the moving contact that can contact with fixed 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 central pivot point of handle spring through last connecting rod, lower link, lower link was subjected to the pulling force of handle spring, and moving contact is rotation rapidly under the effect of lower link, 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 snap close can 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, snap close can be opened after the draw bar motion, makes tripping thread off, and finishes and opens circuit.
As preferably, described outlet terminal is connected with temperature-sensing element, and the temperature-sensing element upper end is connected with the top that can push draw bar.When temperature was higher in moulding shell, crooked after temperature-sensing element is heated, the top of its upper end promptly moved upward and pushes draw bar, and snap close is opened, and tripping is threaded off, and finishes and opens circuit.
As preferably, the shell inside of moulding of described fixed contact and moving contact contact area is provided with arc-extinguish chamber, is provided with flash barrier between arc-extinguish chamber and the input terminal.The spark that arc-extinguish chamber produces in the time of can be with the touching of fixed contact and moving contact is eliminated.
Therefore, the dropout that the utlity model has circuit breaker is comparatively convenient with contacting of tripping, and moving contact at 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 present utility model;
Parts, position and numbering among the figure: mould shell 1, input terminal 2, outlet terminal 3, fixed contact 4, snap close 5, handle 6, plectrum 7, tripping 8, spring 9, go up connecting rod 10, lower link 11, moving contact 12, torsion spring 13, inductance coil 14, static iron core 15, moving iron core 16, draw bar 17, temperature-sensing element 18, top 19, arc-extinguish chamber 20, flash barrier 21.
Embodiment
Below by embodiment, and in conjunction with the accompanying drawings, the technical solution of the utility model is described in further detail.
Embodiment: the mold cased circuit breaker that this is routine, as Fig. 1, Fig. 2, there is one to mould shell 1, mould the input terminal 2 and outlet terminal 3 that are connected with three-phase electricity on the shell respectively, input terminal 2 is connected with fixed contact 4, and outlet terminal 3 is communicated with inductance coil 14, inductance coil inside is provided with static iron core 15 and moving iron core 16, moving iron core is connected with draw bar 17, and the draw bar other end is connected with snap close 5 and can opens it, and outlet terminal is communicated with moving contact 12.Outlet terminal 3 is connected with temperature-sensing element 18, and the temperature-sensing element upper end is connected with the top 19 that can push draw bar 17.Mould shell 1 and be connected with the handle 6 that to stir up and down, mould and be hinged with the plectrum 7 that to be stirred by handle in the shell, plectrum one end is provided with the tripping 8 that can be fastened by snap close, handle 6 is connected with connecting rod 10 and lower link 11 by spring 9, snap close is positioned at the below of spring and last rod connection point, lower link is connected with the moving contact 12 that can contact with fixed contact, and fixed contact 4 is provided with arc-extinguish chamber 20 with shell 1 inside of moulding of moving contact 12 contact areas, is provided with flash barrier 21 between arc-extinguish chamber and the input terminal 2.Be connected with torsion spring 13 on the moving contact.
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 is subjected to 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 15 produce magnetic force after inductance coil 14 energisings, will move iron core 16 and hold, moving iron core moves downward the back and drives draw bar 17 and rotate, thereby snap close 5 is opened, and tripping 8 is threaded off, thus open-circuit line.The electric repulsion that moving contact 12 places produce is greater than the torsion of torsion spring, and moving contact is promptly by pop into position, open-circuit line.
Claims (4)
1. mold cased circuit breaker; comprise and mould shell (1); mould and be connected with input terminal (2) and outlet terminal (3) on the shell; it is characterized in that described input terminal (2) is connected with fixed contact (4); outlet terminal (3) has snap close (5) by the overload protection arrangement contact; mould shell (1) and be connected with handle (6); mould and be hinged with the plectrum (7) that to be stirred by handle in the shell; plectrum one end is provided with the tripping (8) that can be fastened by snap close; handle (6) is connected with connecting rod (10) and lower link (11) by spring (9); snap close is positioned at the below of spring and last rod connection point; lower link is connected with the moving contact (12) that can contact with fixed contact; outlet terminal is communicated with moving contact (12), is connected with torsion spring (13) on the moving contact.
2. mold cased circuit breaker according to claim 1; it is characterized in that described overload protection arrangement includes the inductance coil (14) that is communicated with outlet terminal (3); inductance coil inside is provided with static iron core (15) and moving iron core (16), and moving iron core is connected with the draw bar (17) that snap close can be opened.
3. mold cased circuit breaker according to claim 2 is characterized in that described outlet terminal (3) is connected with temperature-sensing element (18), and temperature-sensing element the inner is connected with the top (19) that can push draw bar (17).
4. according to claim 1 or 2 or 3 described mold cased circuit breakers, it is characterized in that the described fixed contact (4) and shell (1) inside of moulding of moving contact (12) contact area are provided with arc-extinguish chamber (20), are provided with flash barrier (21) between arc-extinguish chamber and the input terminal (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203190676U CN201622990U (en) | 2009-12-30 | 2009-12-30 | Moulded case circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203190676U CN201622990U (en) | 2009-12-30 | 2009-12-30 | Moulded case circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201622990U true CN201622990U (en) | 2010-11-03 |
Family
ID=43026446
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009203190676U Expired - Fee Related CN201622990U (en) | 2009-12-30 | 2009-12-30 | Moulded case circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201622990U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101976643A (en) * | 2010-11-24 | 2011-02-16 | 戴英夫 | Bidirectional earth leakage circuit breaker |
| CN111627774A (en) * | 2020-06-29 | 2020-09-04 | 成都彩佳角商贸有限公司 | Intelligent circuit breaker |
-
2009
- 2009-12-30 CN CN2009203190676U patent/CN201622990U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101976643A (en) * | 2010-11-24 | 2011-02-16 | 戴英夫 | Bidirectional earth leakage circuit breaker |
| CN101976643B (en) * | 2010-11-24 | 2014-03-05 | 戴英夫 | Bidirectional earth leakage circuit breaker |
| CN111627774A (en) * | 2020-06-29 | 2020-09-04 | 成都彩佳角商贸有限公司 | Intelligent circuit breaker |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101103 Termination date: 20131230 |