CN2785122Y

CN2785122Y - Permanent-magnet AC contactor

Info

Publication number: CN2785122Y
Application number: CN 200520069535
Authority: CN
Inventors: 陈晓菊; 喻洋; 蔡彬; 王立强
Original assignee: Daqo Group Co Ltd
Current assignee: Jiangsu Daqo Kfine Electric Co Ltd
Priority date: 2005-03-02
Filing date: 2005-03-02
Publication date: 2006-05-31
Anticipated expiration: 2015-03-02

Abstract

The utility model belongs to the technical field of electric equipment, which relates to a permanent magnetic alternating-current contactor used for switching on and disconnecting a circuit. The permanent magnetic alternating-current contactor comprises a movable iron core and a static iron core which are respectively connected with a movable contact and a static contact, control circuit and a coil winding fixed to the periphery of a tongue core of the static iron core via a frame, wherein the top part of the tongue core of the static iron core is embedded with a rare earth permanent magnet. The utility model having the advantages of less power consumption, no noise, compact structure and low cost can be reliably used in a user's electric network having large fluctuation.

Description

The permanent magnet AC contactor

Technical field

The utility model belongs to the electric equipment technical field, relate to a kind ofly be used for connecting, the permanent magnet AC contactor of open circuit.

Background technology

At present a large amount of its operation principles of A.C. contactor of using are to pass to exchange or direct current makes it produce magnetic field in solenoid, and confinement armature drives contact and carries out work.Since in holding course, need continued power, thereby its power consumption is big, electromagnetic noise is big, its armature structure complexity of while, and coil wire rod consumption is big, useful life short.Chinese patent ZL90212790.0 discloses a kind of permanent magnet contactor, its lower armature tongue heart partly is the monoblock permanent magnet, it has characteristics such as economize on electricity, noiseless, but owing to need to use large-sized monoblock permanent magnetic material, thereby not only consume material is more and manufacturability processing is also relatively poor; Publication number is that the Chinese invention patent application of CN1067987A discloses a kind of polarized rare-earth permanent-magnet contactor, also have economize on electricity and muting characteristics, but its electronic control circuit can send the separating brake pulse at once after under-voltage and make the contactor separating brake, thereby is difficult to use under the stable relatively inadequately running environment of electric power system at home.

Summary of the invention

Technical problem to be solved in the utility model is, provide a kind of little power consumption, noiselessness, compact conformation, cost low, can be in the bigger consumer networks of fluctuation the reliable permanent magnet AC contactor that uses.

Permanent magnet AC contactor of the present utility model includes and connects moving iron core and the static iron core of installing respectively with dynamic and static contact, also include by coil windings and the control circuit of skeletal fixation in static iron core tongue heart periphery, moving iron core can keep separating by spring and static iron core, is embedded with rare-earth permanent magnet at the top of the static iron core tongue heart.

Include two 555 timer chip IC1 and IC2 in the described control circuit; The 1 pin ground connection of IC1,5 pin of IC1 are through capacitor C 2 ground connection, 4 pin of IC1 directly are connected with positive source with 8 pin, 2 pin of IC1 are connected with earth terminal with capacitor C 1 through potentiometer R2 in parallel with 6 pin, 2 pin of IC1 also are connected with positive source through resistance R 1 with 6 pin, 3 pin of IC1 are connected with earth terminal through a diode D1, and 3 pin of IC1 also are connected with earth terminal with separating brake relay K 1 through a pulse module successively; The 1 pin ground connection of IC2,5 pin of IC2 are through capacitor C 4 ground connection, 4 pin of IC2 directly are connected with positive source with 8 pin, 2 pin of IC2 are connected with earth terminal through capacitor C 3 with 6 pin, 2 pin of IC2 also are connected with 3 pin of IC1 with resistance R 3 through potentiometer R4 with 6 pin, 3 pin of IC2 are connected with earth terminal through a diode D2, and 3 pin of IC2 also are connected with earth terminal with closing relay K2 through another pulse module successively.

The utility model need not holding current owing to partly be embedded with permanent magnet at the static iron core tongue heart in the time of can making the contactor adhesive, greatly reduces power consumption and noise; The tongue core structure that while permanent magnet and ferromagnetic material match cooperatively interacts electromagnetic force and permanent magnetism power, can effectively reduce core volume, makes overall structure compact more; In addition, control circuit of the present utility model can be regulated the time-delay opening time according to user's needs, for the single line transient fault overlaps or automatic closing creation time limit cooperation, therefore under the bigger condition of work of power network fluctuation, can reduce the production loss that fault causes.

Description of drawings

Fig. 1 is the structural representation of the utility model iron core part;

Fig. 2 is the circuit diagram of control circuit of the present utility model.

Embodiment

As shown in Figure 1, mechanical part of the present utility model includes moving iron core 1 and static iron core 2, and coil windings 3 is fixed on static iron core tongue heart periphery by skeleton 5, and the top of the static iron core tongue heart is embedded with rare-earth permanent magnet 4.

As shown in Figure 2, in the control circuit, IC1 and R1, R2, C1 form single stabilization delay circuit, and IC2 and R3, R4, C3 form single stabilization delay circuit, and both constitute the segmentation timing circuit.Get when electric when combined floodgate makes the electronic module power end, C1 is full of, and 3 pin of IC1 become low level.IC2 set, its 3 pin becomes high level, and the instantaneous adhesive of K2 makes winding obtain the moving iron core of a forward current adhesive contactor.Pulse module makes K2 disconnect behind certain hour (promptly moving iron core adhesive) automatically, and coil is stopped power supply.The moving iron core of permanent magnet sticking this moment makes contactor keep adhesive.When separating brake or major loop are under-voltage, electronic module power end decompression or under-voltage, C1 discharges through R2, during to 1/3VDD, the IC1 upset, 3 pin are high level, the instantaneous adhesive of K1 scolds for winding one reverse current to start iron core, pulse module makes K1 disconnect behind certain hour (promptly moving iron core is scolded out) automatically, and coil is stopped power supply.Adjust the discharge time of the resistance scalable C1 of C1 and R2, this time is under-voltage delay time.

Claims

1, a kind of permanent magnet AC contactor includes moving iron core (1), static iron core (2), coil windings (3) and control circuit, it is characterized in that: be embedded with rare-earth permanent magnet (4) at the top of the static iron core tongue heart.

2, permanent magnet AC contactor according to claim 1 is characterized in that: include two 555 timer chip IC1 and IC2 in its control circuit; The 1 pin ground connection of IC1,5 pin of IC1 are through capacitor C 2 ground connection, 4 pin of IC1 directly are connected with positive source with 8 pin, 2 pin of IC1 are connected with earth terminal with capacitor C 1 through potentiometer R2 in parallel with 6 pin, 2 pin of IC1 also are connected with positive source through resistance R 1 with 6 pin, 3 pin of IC1 are connected with earth terminal through a diode D1, and 3 pin of IC1 also are connected with earth terminal with separating brake relay K 1 through a pulse module successively; The 1 pin ground connection of IC2,5 pin of IC2 are through capacitor C 4 ground connection, 4 pin of IC2 directly are connected with positive source with 8 pin, 2 pin of IC2 are connected with earth terminal through capacitor C 3 with 6 pin, 2 pin of IC2 also are connected with 3 pin of IC1 with resistance R 3 through potentiometer R4 with 6 pin, 3 pin of IC2 are connected with earth terminal through a diode D2, and 3 pin of IC2 also are connected with earth terminal with closing relay K2 through another pulse module successively.