CN202094054U

CN202094054U - Energy-saving AC (alternating current) contactor

Info

Publication number: CN202094054U
Application number: CN2011201769569U
Authority: CN
Inventors: 丁玉; 丁志刚
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-05-30
Filing date: 2011-05-30
Publication date: 2011-12-28
Anticipated expiration: 2021-05-30

Abstract

The utility model provides an energy-saving AC (alternating current) contactor and belongs to an AC contactor. The AC contactor is composed of a main contactor and a locking device, wherein the locking device is positioned at one side of the main contactor, and a locking side shoring of the locking device is positioned at the movement locus of a moving iron core connecting rack of the main contactor; and the primary coil of the main contactor is connected to a power supply through a start switch, and the locking coil of the locking device is connected at the two ends of a secondary power supply of the normally open contact of the main contactor in a crossing manner through a stop switch. The AC contactor has the following advantages that: the structure is simple; when the AC contactor is in line work, electricity is not supplied to the primary coil of the AC contactor, thus a power supply for maintaining the magnetism of the primary coil of the AC contactor is omitted, and the electricity can be saved by 90% under a working state; when the power supply of the AC contactor is switched on, the primary coil is powered on, the contact acts, the circuit is conducted, the locking coil is electrified to operate so as to lock a moving iron core, and the main contact of the AC contactor is no longer disconnected; and when the primary coil is powered off, the primary coil stops operating, only the locking coil operates, and the main contact is still powered on under the action of the locking side shoring, thus energy is saved.

Description

Energy-saving alternating current contactor

Technical field

The utility model relates to a kind of A.C. contactor, particularly a kind of energy-saving alternating current contactor.

Background technology

At present, the A.C. contactor that people use all is the i.e. electromagnet coil power in A.C. contactor of electric pass formula, the back produces magnetic, form attraction, drive the contacting circuit, load just can be worked, this way has individual shortcoming, promptly allowing A.C. contactor produce attraction will switch on, allow it keep attraction must continue energising, load operation how long, and how long the solenoid of A.C. contactor the inside will switch on, keep the normal connection of A.C. contactor electrical contact with the electromagnetic force of solenoid, wasted the energy.

The utility model content

The purpose of this utility model is that a kind of energy-saving alternating current contactor will be provided, and how long the solenoid that solves the A.C. contactor the inside will switch on, and keep the problem of the normal connection of A.C. contactor electrical contact with the electromagnetic force of solenoid.

The purpose of this utility model is achieved in that this A.C. contactor is by main contactor with only lock device and constitute, only lock device and be positioned at a side of main contactor, only lock the ending on the movement locus of moving iron core link that lock support iron is positioned at main contactor of device, the main coil of main contactor is connected on the power supply by starting switch, and the locking wire circle that ends of only locking device is connected across the secondary power supply of main contactor normally opened contact two ends by shutdown switch.

Described main contactor comprises: contact, auxiliary contact, moving iron core, starting switch, main coil and moving iron core link, the upper end of moving iron core is connected with moving iron core link, contact and auxiliary contact are connected the upper end of moving iron core link, there is main coil lower end at moving iron core, and main coil is connected across on the power supply by starting switch; On moving iron core link, have and only lock gap.

The described device of only locking comprises: end lock support iron, only lock armature, shutdown switch and end the locking wire circle, the lock of ending support iron is arranged on the movement locus of only locking gap of the moving iron core link of main contactor, only the locking wire circle is positioned at a side of main coil, only lock armature and end lock support iron and is connected, end the locking wire circle by shutdown switch be connected across the secondary power supply of main contactor normally opened contact two ends.

Beneficial effect, owing to adopted such scheme, the iron core of A.C. contactor is a vertical motion, when its main coil is sent electricity, moving iron core moves down, when moving unshakable in one's determination during to below, just in time only to lock gap and aim at and end lock support iron, the contact and the normally closed shutdown switch that at this moment end the logical A.C. contactor of locking wire circle are existing, rely on the magnetic of only locking iron core, only lock support iron just in time supports and is only locking in the gap, and A.C. contactor is in on-state, unclamps starting switch, the electricity went off for the A.C. contactor main coil, main coil quits work, owing to end the effect of lock support iron, the contact of A.C. contactor still keeps on-state;

If the main contacts of A.C. contactor is disconnected, press shutdown switch, end locking wire circle dead electricity, rely on the strength of spring to leave only to lock gap just end lock support iron, the moving iron core of A.C. contactor just bullet has got on, and the main contacts of A.C. contactor disconnects; A.C. contactor at work, when external circuit has a power failure, ending the locking wire circle does not have yet, only lock support iron has left and has only locked gap, the iron core of A.C. contactor also bullet has got on, and the contact of A.C. contactor disconnects, and external circuit was restored electricity, because main coil and only to lock iron coil all not charged, A.C. contactor is not worked; Be main contacts to be connected when A.C. contactor is started working by main coil, main contacts is connected the back and is kept on-state, be to rely on the effect that ends the locking wire circle, main coil outage, only locking wire circle work, end the operating current of the operating current of locking wire circle much smaller than main coil, on-state with ending the very little operating current maintenance A.C. contactor of locking wire circle significantly reduces A.C. contactor self power consumption.How long the solenoid that has solved the A.C. contactor the inside will switch on, and keep the problem of the normal connection of A.C. contactor electrical contact with the electromagnetic force of solenoid, reach the purpose of this utility model.

Advantage: this A.C. contactor is simple in structure, during line work, can save the power supply of A.C. contactor main coil maintenance magnetic not to the power supply of A.C. contactor main coil fully, keep the operating state power saving and can reach 90%, press the eletric button that send of A.C. contactor, the main coil of A.C. contactor the inside is promptly switched on, and produces magnetic, attracts the contact action, connect circuit, end the work of locking wire astragal electricity, pin moving iron core, the main contacts of A.C. contactor no longer disconnects, the cut-out main coil, main coil quits work, and has only only locking wire circle work, under the effect that ends lock support iron, main contacts still keeps connecting, and has saved the energy.

Description of drawings

Fig. 1 is a structure chart of the present utility model.

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

Among the figure, 1, contact; 2, auxiliary contact; 3, moving iron core; 4, starting switch; 5, main coil; 6, end lock support iron; 7, only lock armature; 8, shutdown switch; 9, end the locking wire circle; 10, moving iron core link.

Embodiment

Embodiment 1: this A.C. contactor is by main contactor and only lock device and constitute, only lock device and be positioned at a side of main contactor, the lock support iron 6 that ends of only locking device is positioned on the movement locus of the moving iron core link 10 of main contactor, the main coil 5 of main contactor is connected on the power supply by starting switch 4, and the locking wire circle 9 that ends of only locking device is connected across the secondary power supply of main contactor normally opened contact two ends by shutdown switch 8.

Described main contactor comprises: contact 1, auxiliary contact 2, moving iron core 3, starting switch 4, main coil 5 and moving iron core link 10, there is iron core link 10 upper end of moving iron core 3, contact 1 and auxiliary contact 2 are connected the upper end of moving iron core link 10, there is main coil 5 lower end at moving iron core 3, and main coil 5 is connected across on the power supply by starting switch 4; On moving iron core link 10, have and only lock gap.

The described device of only locking comprises: end lock support iron 6, only lock armature 7, shutdown switch 8 and end locking wire circle 9, the lock of ending support iron 6 is arranged on the movement locus of only locking the gap position of the moving iron core link of main contactor, only locking wire circle 9 is positioned at a side of main coil, only lock armature 7 and end lock support iron 6 and is connected, end locking wire circle 9 by shutdown switch 8 be connected across the secondary power supply of main contactor normally opened contact two ends.

Claims

1. energy-saving alternating current contactor, it is characterized in that: this A.C. contactor is by main contactor and only lock device and constitute, only lock device and be positioned at a side of main contactor, only lock the ending on the movement locus of moving iron core link that lock support iron is positioned at main contactor of device, the main coil of main contactor is connected on the power supply by starting switch, and the locking wire circle that ends of only locking device is connected across the secondary power supply of main contactor normally opened contact two ends by shutdown switch.

2. according to the described energy-saving alternating current contactor of claim 1, it is characterized in that: described main contactor comprises: contact, auxiliary contact, moving iron core, starting switch, main coil and moving iron core link, the upper end of moving iron core is connected with moving iron core link, contact and auxiliary contact are connected the upper end of moving iron core link, there is main coil lower end at moving iron core, and main coil is connected across on the power supply by starting switch; On moving iron core link, have and only lock gap.

3. according to the described energy-saving alternating current contactor of claim 1, it is characterized in that: the described device of only locking comprises: end lock support iron, only lock armature, shutdown switch and end the locking wire circle, the lock of ending support iron is arranged on the movement locus of only locking gap of the moving iron core link of main contactor, only the locking wire circle is positioned at a side of main coil, only lock armature and end lock support iron and is connected, end the locking wire circle by shutdown switch be connected across the secondary power supply of main contactor normally opened contact two ends.