CN200950425Y

CN200950425Y - Micro-power consumption contactor

Info

Publication number: CN200950425Y
Application number: CN 200620046514
Authority: CN
Inventors: 王怀文
Original assignee: Baoshan Iron and Steel Co Ltd
Current assignee: Baoshan Iron and Steel Co Ltd
Priority date: 2006-09-29
Filing date: 2006-09-29
Publication date: 2007-09-19
Anticipated expiration: 2016-09-29

Abstract

The utility model relates to a low voltage electrical apparatus, in particular to an ac contactor. A micro-power consumption contactor includes an electronic control circuit and a mechanical operation device. The power is monitored by the electronic control circuit, when power is attained, the main coil is pulled in, the mechanical operation device begins to lock the pull-in position of the main coil, and the power supply of the main coil is broken. The utility consumes the electricity only at the moment of operation, the contactor coil has little temperature rising, once the operation is finished the coil of the contactor is power off to make the contactor have a micro-power consumption. The traditional contactor can be replaced by the utility, and the current traditional electric drive control circuits need not to be transformed, the utility is of a simple structure and is convenient to be manufactured.

Description

The contactor of atomic power consumption

(1) technical field

The utility model relates to low-voltage electrical apparatus, relates in particular to A.C. contactor.

(2) background technology

A.C. contactor is a kind of low voltage component commonly used, is the switchgear that is used for carrying out control.After contactor put into operation, the sucking coil in traditional contactor need consume a large amount of electric energy owing to there is electric current to flow through always, and produces a large amount of heats, causes coil temperature rise and damage.Patent CN88217525.4 discloses a kind of " little power consumption contactor ", patent 89204736.4 discloses a kind of " the little power consumption A.C. contactor of noiselessness ", these technology adopt electronic circuit that power supply is monitored, when obtaining power supply, the adhesive main coil, the mechanical locking action locks the main coil attracted position, and disconnects the power supply of main coil by the conversion of normally closed contact; Electronic circuit charges to energy-storage travelling wave tube (electric capacity) simultaneously, and power supply is monitored, as long as power supply keeps always, whole device is remained stationary; When power supply disconnects, power by storage capacitor, the electronic circuit action, with the mechanical locking release, main coil resets storage capacitor by circuit adhesive ancillary coil, and whole process is finished.Realize adhesive, disconnect main coil power supply, reset function.Adopt electronic circuit control can save electric power greatly, but the parameter of the storage capacitor charging circuit in the electronic circuit is selected also may have influence on energy-conservation effect.

(3) summary of the invention

The purpose of this utility model is to provide a kind of contactor of atomic power consumption, and this contactor only at the electric power of consumption in a flash of action, makes that the power consumption of contactor is small, has good energy-saving effect, and simple in structure, easy to manufacture.

The utility model is achieved in that a kind of contactor of atomic power consumption, comprise electronic control circuit and mechanical action device, it is characterized in that: the mechanical action device comprises depression bar, locking plate, unlocking board, the normally-open normally-close contact, push rod and coil, extension spring, the mechanical action device is positioned at contactor casing top, depression bar links to each other with silicon steel sheet in the contactor and stretches to the contactor top, the depression bar top is pushed down by the locking plate dead bolt, locking plate is by plate body, the plate body seat, dead bolt, arm-tie is formed, plate body is on the plate body seat, plate body top has dead bolt to stretch out, arm-tie links to each other with plate body, and extension spring is housed on the plate body, and the extension spring other end is fixed on the contactor casing; The arm-tie top of locking plate connects stirs bar, stirs bar between the normally-open normally-close contact, control normally-open normally-close switch; Unlocking board is positioned at the locking plate side and stretches to locking plate, and extension spring is equipped with in unlocking board one side, and push rod and coil are equipped with in the unlocking board another side;

Electronic control circuit comprises resistance, electric capacity, diode, voltage-stabiliser tube, triode, switch, coil, and is in parallel with resistance R 1 behind normally closed switch K1, the K3 series resistor R5, and serial connection diode D1 positive pole, serial connection diode D1 negative pole behind the capacitor C 1 shunt regulator tube D3; Connect contactor coil between normally closed switch K1, the K3, normally closed switch K1 one termination AC power; Capacitor C 2 shunt regulator tube D4 and resistance R 4 back serial connection diode D2 positive poles, diode D2 negative pole connecting resistance R5 and R1 point in parallel; Two triode series connection backs constitute compound transistor, the compound transistor base stage meets divider resistance R2, R3, collector electrode meets normal open switch K2, emitter connects common wire, resistance R 2 connects diode D1 negative pole, and resistance R 3 connects diode D2 positive pole, another terminating diode of normal open switch K2 D5 negative pole, diode D5 parallel connection is by the coil L in push rod and the coil, and diode D5 positive pole connects diode D1 negative pole.

The utility model is to have increased electronic control circuit and mechanical action device on the basis of traditional contactor, by electronic circuit power supply is monitored, when obtaining power supply, the adhesive main coil, the mechanical action device action, with the locking of main coil attracted position, and the power supply of disconnection main coil.Only at the electric power of consumption in a flash of action, the contactor coil temperature rise is little for the utility model, and contactor coil promptly cut off the power supply after action was finished, and made that the power consumption of contactor is small.The utility model can replace traditional contactor, and traditional Electric Traction control circuit that is using be need not any transformation, and possesses all functions of use of traditional contactor.The utility model is simple in structure, and is easy to manufacture.

(4) description of drawings

Fig. 1 is the contactor end view structural representation of the atomic power consumption of the utility model;

Fig. 2 is the contactor vertical view of atomic power consumption;

Fig. 3 is a normally-open normally-close contact schematic diagram;

Fig. 4 be among Fig. 3 A to schematic diagram;

Fig. 5 be among Fig. 3 B to schematic diagram;

Fig. 6 is a mechanical action device schematic diagram;

Fig. 7 is the contactor electronic control circuit figure of atomic power consumption.

Among the figure: 1 depression bar, 2 locking plates, 3 unlocking boards, 4 normally-open normally-close contacts, 5 push rods and coil, 6 extension springs, 7 pull bars, 8 stir bar; 9 traditional contactor casings (contactor), 10E type silicon steel sheet, 11 contactor coils.

(5) embodiment

The utility model is described in further detail below in conjunction with the drawings and specific embodiments.

Referring to Fig. 1, Fig. 2, Fig. 6, a kind of contactor of atomic power consumption comprises electronic control circuit and mechanical action device.The mechanical action device is positioned at contactor casing 9 tops, and the mechanical action device comprises depression bar 1, locking plate 2, unlocking board 3, normally-open normally-close contact 4, push rod and coil 5, extension spring 6.Depression bar 1 links to each other with silicon steel sheet 10 in the contactor and stretches to contactor 9 tops, and depression bar 1 top is pushed down by locking plate 2 dead bolts.Locking plate 2 is made up of plate body, plate body seat, dead bolt, arm-tie 7, and the plate body seat is on the plate body seat, and plate body top has dead bolt to stretch out, and arm-tie 7 links to each other with plate body, and extension spring 6 is housed on the plate body, and extension spring 6 other ends are fixed on the contactor casing 9; Arm-tie 7 tops of locking plate connect stirs bar 8, stirs bar 8 between the normally-open normally-close contact, and control normally-open normally-close switch is referring to Fig. 3, Fig. 4, Fig. 5.It is other that unlocking board 3 is positioned at locking plate 2, and stretch to locking plate 2 and match with locking plate 2, and extension spring 6 is equipped with in unlocking board 3 one sides, and push rod and coil 5 are equipped with in unlocking board 3 another sides.

Referring to Fig. 7, electronic control circuit comprises resistance, electric capacity, diode, voltage-stabiliser tube, triode, switch, coil.In parallel behind normally closed switch K1, the K3 series resistor R5 with resistance R 1, and serial connection diode D1 positive pole, serial connection diode D1 negative pole behind the capacitor C 1 shunt regulator tube D3; Connect contactor coil between normally closed switch K1, the K3, normally closed switch K1 one termination AC power; Capacitor C 2 shunt regulator tube D4 and resistance R 4 back serial connection diode D2 positive poles, diode D2 negative pole connecting resistance R5 and R1 point in parallel; Two triode series connection backs constitute compound transistor, the compound transistor base stage meets divider resistance R2, R3, collector electrode meets normal open switch K2, emitter connects common wire, resistance R 2 connects diode D1 negative pole, and resistance R 3 connects diode D2 positive pole, another terminating diode of normal open switch K2 D5 negative pole, diode D5 parallel connection is by the coil L in push rod and the coil, and diode D5 positive pole connects diode D1 negative pole.

The course of work of the contactor of the atomic power consumption of the utility model:

Referring to Fig. 6, Fig. 7, initial condition: K switch 1, K3 closure, K switch 2 disconnects.When the moment that is subjected to electricity, contactor is subjected to electric adhesive; Power supply is transformed into positive 12V direct current through resistance R 1, R5, diode D1, voltage-stabiliser tube D3 simultaneously, to capacitor C 1 quick charge, can realize the contactor crawl; Power supply is transformed into negative 20V direct current through diode D2, voltage-stabiliser tube D4, capacitor C 2 simultaneously, and the A point is in negative potential in the circuit, and promptly the base stage of compound transistor BG1, BG2 is the A point, and compound transistor ends.

Standby condition: along with the adhesive of contactor, depression bar 1 moves down, and along with depression bar 1 moves down, locking plate 2 is moved by the influence of spring 6 left side power to the left, and the dead bolt of locking plate 2 is pushed down depression bar 1; Locking plate 2 promotes often to open/close the poke rod 8 of contact switch simultaneously, K switch 1, K3 are disconnected, contactor coil and quick-charging circuit power supply disconnect, K switch 2 closures, coil L place in circuit in push rod and the coil 5, power supply is still continued to finish up to capacitor C 1 charging to capacitor C 1 power supply by resistance R 1, diode D1.

Operate condition: when power supply disconnects, 0.5 second RC circuit discharging that capacitor C 2, resistance R 4 are formed, the A point voltage is just being become by negative, when voltage during more than or equal to 1.2V, compound transistor BG1, BG2 conducting, capacitor C 1 is discharged to the coil L of push rod and coil 5 by compound transistor BG1, BG2, coil L gets electric after push rod 5 and unlocking board 3 adhesives, driving unlocking board 3 moves right, thereby remove the locking of 2 pairs of depression bars 1 of locking plate, contactor is subjected to the spring return armed state of back-moving spring own, and entire circuit returns to initial condition.

Claims

1. the contactor of an atomic power consumption, comprise electronic control circuit and mechanical action device, it is characterized in that: the mechanical action device comprises depression bar, locking plate, unlocking board, the normally-open normally-close contact, push rod and coil, extension spring, the mechanical action device is positioned at contactor casing top, depression bar links to each other with silicon steel sheet in the contactor and stretches to the contactor top, the depression bar top is pushed down by the locking plate dead bolt, locking plate is by plate body, the plate body seat, dead bolt, arm-tie is formed, the plate body seat is on the plate body seat, plate body top has dead bolt to stretch out, arm-tie links to each other with plate body, and extension spring is housed on the plate body, and the extension spring other end is fixed on the contactor casing; The arm-tie top of locking plate connects stirs bar, stirs bar between the normally-open normally-close contact, control normally-open normally-close switch; Unlocking board is positioned at the locking plate side and stretches to locking plate, and extension spring is equipped with in unlocking board one side, and push rod and coil are equipped with in the unlocking board another side;