CN201629278U - Self-repulsing plastic housing breaker - Google Patents
Self-repulsing plastic housing breaker Download PDFInfo
- Publication number
- CN201629278U CN201629278U CN2009203190680U CN200920319068U CN201629278U CN 201629278 U CN201629278 U CN 201629278U CN 2009203190680 U CN2009203190680 U CN 2009203190680U CN 200920319068 U CN200920319068 U CN 200920319068U CN 201629278 U CN201629278 U CN 201629278U
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- self
- handle
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Abstract
The utility model relates to a breaker, in particular to a self-repulsing plastic housing breaker. The self-repulsing plastic housing breaker mainly solves the technical problems that the tripping and the jumping of the breaker are inconvenient to contact in the prior art, and the transmission speed of a moving contact is low when contacting a fixed contact or separating from the fixed contact if current is large to easily cause accidents and the like. The utility model comprises a plastic housing which is connected with an input terminal and an outlet terminal, wherein the inlet terminal is connected with the fixed contact, the fixed contact is movably connected into the plastic housing by the torsional spring of the fixed contact, the outlet terminal is in contact with a lock catch by an overload protection device, the plastic housing is movablely connected with the handle, a pick which can be toggled by the handle is hinged in the plastic housing, one end of the pick is provided with a jumped pin buckled by the lock catch, the handle is connected with an upper connecting rod and a lower connecting rod by a spring, the lower connecting rod is connected with the movable contact capable of contacting with the fixed contact, the outlet terminal is communicated with the moving contact, and the moving contact is connected with the torsional spring of the moving contact.
Description
Technical field
The utility model relates to a kind of circuit breaker, especially relates to a kind of to the isostructural improvement of self-excluded type plastic casing 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 contacting of the dropout of this circuit breaker and tripping is inconvenient, and electric current is when big, moving contact at the touching fixed contact or when throwing off fixed contact transmission speed unhappy, meet accident easily.
The utility model content
The utility model technical issues that need to address provide a kind of self-excluded type plastic casing circuit breaker, it mainly is the inconvenience that contacts that solves dropout with the tripping of existing in prior technology circuit breaker, and when electric current is big, 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:
Self-excluded type plastic casing 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; fixed contact is movably connected in by the fixed contact torsion spring and moulds in the shell; outlet terminal has snap close by the overload protection arrangement contact; outlet terminal is communicated with snap close; 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; handle is connected with connecting rod and lower link by spring; snap close is positioned at the below of spring and last rod connection point, and lower link is connected with the moving contact that can contact with fixed contact, is connected with the moving contact torsion spring on the moving contact.When electric current was excessive, because fixed contact is to be movably connected in by the fixed contact torsion spring to mould in the shell, so after being subjected to electric power, fixed contact can be drawn back, thereby produced from repulsion with moving contact, flicked rapidly.When handle was pulled downwards, handle was stirred plectrum and is moved downward, plectrum below tripping just can and then move downward and snap close fastens, thereby with the outlet terminal conducting.After handle was upwards pulled, when spring passed through the line of last connecting rod, lower link outer end, lower link lost the pulling force of spring, and moving contact rotates under the effect of moving contact torsion spring, thereby contacts with fixed contact, with the input terminal conducting.Input terminal and outlet terminal can be 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 snap close connecting rod 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 snap close link motion, makes tripping thread off, and finishes and opens circuit.
As preferably, described outlet terminal is connected with temperature sensing rod, and temperature sensing rod the inner is connected with the top that can push the snap close connecting rod.When temperature was higher in moulding shell, crooked after temperature sensing rod is heated, the top of its inner promptly moved upward and pushes the snap close connecting rod, 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 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 electric current is when excessive, can produce between moving contact and the fixed contact from repulsion, make that moving contact transmission speed when throwing off fixed contact is 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;
Accompanying drawing 2 is side internal structure schematic diagrames of Fig. 1.
Parts, position and numbering among the figure: mould shell 1, input terminal 2, outlet terminal 3, fixed contact 4, fixed contact torsion spring 5, snap close 6, handle 7, plectrum 8, tripping 9, spring 10, go up connecting rod 11, lower link 12, moving contact 13, moving contact torsion spring 14, inductance coil 15, static iron core 16, moving iron core 17, snap close connecting rod 18, temperature sensing rod 19, top 20, arc-extinguish chamber 21, flash barrier 22.
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 self-excluded type plastic casing 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, fixed contact is movably connected in by fixed contact torsion spring 5 and moulds in the shell, outlet terminal 3 is communicated with inductance coil 15, inductance coil inside is provided with static iron core 16 and moving iron core 17, moving iron core is connected with snap close connecting rod 18, the snap close connecting rod other end is connected with snap close 6 and can opens it, and outlet terminal is communicated with snap close.Outlet terminal 3 is connected with temperature sensing rod 19, and temperature sensing rod the inner is connected with the top 20 that can push snap close connecting rod 18.Mould shell 1 and be connected with the handle 7 that to stir up and down, mould and be hinged with the plectrum 8 that to be stirred by handle in the shell, plectrum one end is provided with the tripping 9 that can be fastened by snap close, handle 7 is connected with connecting rod 11 and lower link 12 by spring 10, snap close is positioned at the below of spring and last rod connection point, lower link is connected with the moving contact 13 that can contact with fixed contact, and fixed contact 4 is provided with arc-extinguish chamber 21 with shell 1 inside of moulding of moving contact 13 contact areas, is provided with flash barrier 22 between arc-extinguish chamber and the input terminal 2.Be connected with moving contact torsion spring 14 on the moving contact.
During use, earlier handle 7 is down pulled, handle is stirred plectrum 8 and is moved downward, and the tripping 9 on the plectrum is and snap close 6 snaps together outlet terminal 3 conductings.Again handle is upwards pulled, when spring 10 that handle connects during through the line between last connecting rods 11 and lower link 12 outer ends, spring loses pulling force to lower link, and moving contact 13 rotates under the effect of moving contact torsion spring 14, 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 16 produce magnetic force after inductance coil 15 energisings, will move iron core 17 and hold, drive snap close connecting rod 18 after the moving iron core transverse movement and rotate, thereby snap close 6 is opened, tripping 9 is threaded off, thus open-circuit line.The electric power that fixed contact 4, moving contact 13 places produce is greater than the torsion of fixed contact torsion spring 5, moving contact torsion spring 14, and fixed contact, moving contact produce from all motions backward of repulsion, thus open-circuit line.
Claims (4)
1. self-excluded type plastic casing 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); fixed contact is movably connected in by fixed contact torsion spring (5) and moulds in the shell; outlet terminal (3) has snap close (6) by the overload protection arrangement contact; mould shell (1) and be connected with handle (7); mould and be hinged with the plectrum (8) that to be stirred by handle in the shell; plectrum one end is provided with the tripping (9) that can be fastened by snap close; handle (6) is connected with connecting rod (11) and lower link (12) by spring (10); snap close is positioned at the below of spring and last rod connection point; lower link is connected with the moving contact (13) that can contact with fixed contact, and outlet terminal is communicated with moving contact (13), is connected with moving contact torsion spring (14) on the moving contact.
2. self-excluded type plastic casing circuit breaker according to claim 1; it is characterized in that described overload protection arrangement includes the inductance coil (15) that is communicated with outlet terminal (3); inductance coil inside is provided with static iron core (16) and moving iron core (17), and moving iron core is connected with the draw bar (18) that snap close can be opened.
3. self-excluded type plastic casing circuit breaker according to claim 2 is characterized in that described outlet terminal (3) is connected with temperature-sensing element (19), and temperature-sensing element the inner is connected with the top (20) that can push draw bar (18).
4. according to claim 1 or 2 or 3 described self-excluded type plastic casing circuit breakers, it is characterized in that the described fixed contact (4) and shell (1) inside of moulding of moving contact (13) contact area are provided with arc-extinguish chamber (21), are provided with flash barrier (22) between arc-extinguish chamber and the input terminal (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203190680U CN201629278U (en) | 2009-12-30 | 2009-12-30 | Self-repulsing plastic housing breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203190680U CN201629278U (en) | 2009-12-30 | 2009-12-30 | Self-repulsing plastic housing breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201629278U true CN201629278U (en) | 2010-11-10 |
Family
ID=43060676
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009203190680U Expired - Fee Related CN201629278U (en) | 2009-12-30 | 2009-12-30 | Self-repulsing plastic housing breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201629278U (en) |
-
2009
- 2009-12-30 CN CN2009203190680U patent/CN201629278U/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 | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101110 Termination date: 20131230 |