CN2561083Y

CN2561083Y - A.C. contactor

Info

Publication number: CN2561083Y
Application number: CN 02241785
Authority: CN
Inventors: 尚子忠
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-07-17
Filing date: 2002-07-17
Publication date: 2003-07-16
Anticipated expiration: 2012-07-17

Abstract

The utility model discloses an AC contactor, which comprises an isolated base seat, a contact part, an electric magnet part and a drive rod, wherein the contact part is provided with three fixed contacts, three moving contacts corresponding to the three fixed contacts are fixed on an insulation plate, the insulation plate is glidingly fixed on a sliding bar on the isolated base seat, and the contacts are arranged in an arc extinction box. The AC contactor adopting the structure has the advantages that each phase contact runs synchronously, the movement is steady reliable, the phase lacking fault can be effectively reduced, an oil blast method is adopted, the contact burningout or conglutination phenomenon can be reduced, the service life and the reliability of the AC contactor are improved, and the secure and normal operation of electric equipment is ensured.

Description

A kind of A.C. contactor

Technical field

The utility model relates to a kind of A.C. contactor, especially a kind of A.C. contactor that adopts oil blast.

Background technology

At present, the every electricity mutually of the contact part of the being seen A.C. contactor in market just has four contacts, two contact-making surfaces, three-phase ac contactor just has six contact-making surfaces in 12 contacts, each electric mutually link is relatively independent, the easy like this priority error that causes the time that respectively is electrically connected causes phase shortage to damage the motor accident easily.Air blowout is adopted in the contact, burns out contact easily, contactor low and poor reliability in useful life.

Summary of the invention

The purpose of this utility model is to provide a kind of A.C. contactor, can reduce open-phase fault, improves useful life and unfailing performance.

The utility model is achieved in that a kind of A.C. contactor, comprise insulator foot, contact part, electromagnet part and drive rod, contact partly is in the bottom of insulator foot the arc extinguishing fuel tank to be arranged, there are three in the arc extinguishing fuel tank and decide contact, Dui Ying three moving contacts are fixed on the insulation board with it, insulation board is fixed on the slide bar of insulator foot slidably, and support spring is arranged at the bottom of slide bar, makes, decides contact and separate under the situation of electromagnet outage; Electromagnet part yoke and coil stationary are on insulator foot, armature is fixed on the insulator foot by bearing pin, the armature upper end connects drive rod, drive rod connects by bearing pin and is fixed on crank on the insulator foot, the lower end of crank is on the top of insulation board, drives insulation board by connecting rod and crank and moves up and down and make, decide that contact is opened and closure.

There is a pulley lower end of described crank, guarantee that the A.C. contactor operation is sensitive, on crank, also have a return spring, the support spring acting in conjunction of this spring and slide bar bottom, make, decide contact and separate under the situation of electromagnet outage, armature leaves yoke.

Described drive rod adopts bearing pin to connect with crank, and there is adjusting nut the connection place, also has eccentric wheel in the outside of armature, and the rotating eccentricity wheel can be regulated the armature openings of sizes.

Be fixed with auxiliary contact on the lower end insulator foot of described armature, the lower end of armature connects with the drive rod of auxiliary contact, and armature rotates around bearing pin under the effect of electromagnet, can drive auxiliary contact unlatching and closed, realizes automatic controlled function.

Advantage of the present utility model is: three moving contacts are fixed on the insulation board, guaranteed to open with synchronously closed, it is reliable that insulation board is fixed on the slide bar stable action, can reduce open-phase fault effectively, adopt the oil blast method, reduced that contact burns out or adhesion phenomenon, improved the useful life and the reliability of A.C. contactor, guaranteed that the safety of power consumption equipment is normally moved.

Description of drawings

Fig. 1 is the utility model structural representation

Embodiment

Fig. 1 shows a kind of mode of specifically executing of the present utility model.A kind of A.C. contactor, at insulator foot 9 upper left sides are contact parts, the right side is the electromagnet part, two parts connect by drive rod 2 and crank 11, lower left quarter at insulator foot 9 has arc extinguishing fuel tank 19, there are three in the arc extinguishing fuel tank 19 and decide contact 18, Dui Ying three moving contacts 17 are fixed on the insulation board 14 with it, insulation board 14 is fixed on the slide bar 15 of insulator foot slidably, support spring 16 is arranged at the bottom of slide bar 15, under the situation of electromagnet outage, make, deciding contact separates: the upper left quarter at insulator foot 9 has yoke 6 and coil 3, armature 5 is fixed on insulator foot 9 middle and lower parts by bearing pin 7, its outside has off-centre to swing 4, rotating eccentricity wheel 4 can be regulated the armature openings of sizes, armature 5 upper ends connect drive rod 2, drive rod 2 connects by bearing pin 12 and is fixed on crank 11 on the insulator foot 9, wherein on the connecting rod 2 adjusting nut 10 is arranged, can adjust connecting rod 2 length, there is pulley 13 lower end of crank 11 and is pressed in the top of insulation board 14, on crank 11, also has a return spring 1, this spring 1 and 16 actings in conjunction of slide bar lower support spring make under the situation of electromagnet outage, decide contact and separate, armature 5 leaves yoke 6.Be fixed with auxiliary contact 8 on the lower end insulator foot of armature 5, the lower end of armature 5 connects with the drive rod of auxiliary contact 8, and armature 5 rotates around bearing pin 7 under the effect of electromagnet, can drive auxiliary contact 8 and open and closure, realizes automatic controlled function.

The course of work of A.C. contactor is as follows:

After the solenoid energising, yoke 6 and armature 5 adhesives, drive rod 2 rotate crank 11, and crank 11 moves down insulation board 14, realizes moving, deciding contact closure.After the solenoid outage, yoke 6 discharges with armature 5, and under the effect of spring force, realization is moved, decided contact and separates.

Auxiliary contact 8 has normally opened contact and normally-closed contact, can make auxiliary contact 8 interactive actions realize control automatically under the effect of armature 5.

Claims

1, a kind of A.C. contactor, comprise insulator foot, contact part, electromagnet part and drive rod, it is characterized in that: contact partly is in the bottom of insulator foot (9) arc extinguishing fuel tank (19) to be arranged, there are three in the arc extinguishing fuel tank (19) and decide contact (18), Dui Ying three moving contacts (17) are fixed on the insulation board (14) with it, insulation board (14) is fixed on the slide bar (15) of insulator foot slidably, and support spring (16) is arranged at the bottom of slide bar (15); Electromagnet part yoke (6) and coil (3) are fixed on the insulator foot (9), the bearing pin (7) that passes through of armature (5) is fixed on the insulator foot (9), armature (5) upper end connects drive rod (2), drive rod (2) connects by bearing pin (12) and is fixed on crank (11) on the insulator foot (9), and the lower end of crank (11) is on the top of insulation board (14).

2, A.C. contactor according to claim 1 is characterized in that: there is a pulley (13) lower end of crank (11), goes up at crank (11) to also have a return spring (1).

3, A.C. contactor according to claim 1 and 2 is characterized in that: drive rod (2) adopts bearing pin to connect with crank (11), and there is adjusting nut (10) connection place, also has eccentric wheel (4) in the outside of armature (5).

4, A.C. contactor according to claim 1 and 2 is characterized in that: be fixed with auxiliary contact (8) on the lower end insulator foot (9) of armature (5), the lower end of armature (5) connects with the drive rod of auxiliary contact (8).