CN2056277U

CN2056277U - Mechanical locker ac contactor

Info

Publication number: CN2056277U
Application number: CN 89212491
Authority: CN
Inventors: 周新友
Original assignee: Individual
Current assignee: Individual
Priority date: 1989-05-18
Filing date: 1989-05-18
Publication date: 1990-04-18

Abstract

The utility model relates to a mechanical locker AC contactor. A mechanical locker device, a tripping coil and an automatic tripping circuit for power failure are arranged in an AC contactor, which leads the AC contactor to normally run through the mechanical locker device under the condition that an attracting coil is not connected with electricity. The tripping coil can lead the mechanical locker device to be released to cut off a circuit. When power failure occurs, the automatic tripping circuit for power failure can automatically lead the mechanical locker device to be released to cut off a circuit. The utility model has the advantages of electricity saving, low noise, reliable running, long service life of the contactor, etc.

Description

Mechanical locker AC contactor

The utility model belongs to the electromagnetic relay technical field, is a kind of mechanical lock button A.C. contactor.

A.C. contactor is the most widely used electric device in the electric equipment, present widely used A.C. contactor, be behind coil electricity, to produce suction adhesive contact, coil must keep energising in the time of contact contact, if coil blackout, then contact disconnects, therefore there is following shortcoming in this A.C. contactor: 1, power consumption is many, all the time switch at A.C. contactor duration of work, coil, the coil holding power was generally more than 30W when the above A.C. contactor of 150A moved, capacity is big more, dissipation power is also big more, and reactive loss is then bigger.Big, the poor working environment of noise when 2, moving.3, power factor is low.4, operating state is subject to the influence generation fluctuation of supply voltage.

The purpose of this utility model is that existing A.C. contactor is improved, and overcomes the above-mentioned weak point of existing A.C. contactor, and the mechanical lock button A.C. contactor of a kind of relatively simple for structure, noiseless, power factor height, economize on electricity is provided.

The purpose of this utility model realizes with the following methods.Fixing support arm on the adhesive static gag bit of A.C. contactor, to discharge crotch with alignment pin is fixed on the support arm, discharging crotch can rotate around alignment pin, its end is that crotch, the other end are being fixed a tripping operation moving armature, tension spring is looped around on the alignment pin, an end is pressed on the arm that discharges crotch, the other end is fixed on the hook of support arm, the locking clamp is installed on the adhesive moving armature, breaking coil is arranged on the tripping operation static gag bit in tripping operation moving armature corresponding position, the utility model will be further described below in conjunction with accompanying drawing.

Fig. 1 the utility model front view;

Fig. 2 is the right side view of Fig. 1;

Fig. 3 mechanical lock buckle device part cutaway view Amplified image;

Fig. 4 circuit theory diagrams.

Among the figure: 1-shaft seating, 2-adhesive moving armature, 3-pull-in winding junction block, 4-main contact arc-extinguish chamber, 5-moving armature support, 6-locking clamp, 7-discharges crotch, 8-tension spring, 9-support arm, the 10-moving armature that trips, the 11-static gag bit that trips, 12(IQ)-breaking coil, 13-adhesive static gag bit, 14-static gag bit fixed head, 15-props up seat board, the 16-seat board, 17(HC)-pull-in winding, the 18-buffer spring, the 19-rotating shaft, 20-return spring, 21-auxiliary contact, 22-tripping operation circuit basin, 23-main contact seat, 24-alignment pin, 25-moving armature gag lever post, 26-hook, HA, the TA-push-button switch, the 1HC-main contact, R-resistance, ZJ-auxiliary relay, C-electric capacity, D-diode, IQ-breaking coil, A, B, the C-live wire, the N-zero line.

When A.C. contactor need move, press and connect button (HA), pull-in winding (17, HC) energising, produce suction, adhesive moving armature (2) and adhesive static gag bit (13) are pulled together, main contact under the main contact arc-extinguish chamber (1HC) is connected, because adhesive moving armature (2) moves to adhesive static gag bit (13), after both contacts, the crotch that locking clamp (6) is released on the crotch (7) blocks, release button (HA), pull-in winding (17, HC) outage, because adhesive moving armature (2) is released crotch (7) by locking clamp (6) and blocks, thereby main contact (1HC) is still connected, A.C. contactor is in running status, because the normal operation of contactor is a pull-in winding (17, HC) under the uncharged situation, thereby save electric energy greatly.When A.C. contactor need disconnect, as long as press the button (TA), at this moment breaking coil (12, TQ) energising, produce suction, tripping operation moving armature (10) is attracted to breaking coil (12) inside, thereby release crotch (7) is rotated around alignment pin (24) clockwise direction, crotch breaks away from locking clamp (6) adhesive moving armature (2) and resets under the spring force effect of return spring (20), main contact (1HC) is disconnected, be that circuit disconnects, release button (TA), breaking coil (12) outage, suction disappears, discharge crotch (7) and reset under the effect of tension spring (8), tripping operation moving armature (10) resets with discharging crotch (7).When power supply has a power failure in the A.C. contactor running, because main contact still is in on-state, for preventing unexpected incoming call, damage electric equipment, design has power failure automatic trip circuit in circuit, this circuit is electrically connected with breaking coil (TQ) is in parallel, and it is composed in series by auxiliary relay (ZJ), resistance (1R), diode (3D, 1D), electric capacity (2C), and electronic component is installed in the tripping operation circuit box (22) after assembling by Fig. 4 circuit.When A.C. contactor during in running status, electric capacity (2C) charging, after power supply has a power failure, electric capacity (2C) discharge, electric current is through ZJ1 and ZJ3, breaking coil (TQ), diode (2D), because breaking coil (TQ) energising, make tripping operation moving armature (10), discharge crotch (7) action, discharge locking clamp (6), main contact (1HC) disconnection, reach the purpose of power failure automatic trip like this, (when A.C. contactor normally moved, the power consumption of power failure automatic trip circuit only had 2W).Discharge the lever ratio L:N=4-8 of crotch (7).

After the utility model improves existing A.C. contactor, have saves energy, power factor height, reduce noise, reliable, advantages such as service life that the main contact loss reduces, prolonged contactor.

Claims

1, a kind of mechanical lock button A.C. contactor, comprise pull-in winding (17, HC), main contact (1HC), auxiliary contact (21), main contact arc-extinguish chamber (4), return spring (20), adhesive static gag bit (13), adhesive moving armature (2), it is characterized in that the last fixedly support arm (9) of adhesive static gag bit (13), to discharge crotch (7) with alignment pin (24) is fixed on the support arm (9), discharging crotch (7) one ends is crotch, the other end is being fixed a tripping operation moving armature (10), tension spring (8) is looped around on the alignment pin (24), one end is pressed on the arm that discharges crotch (7), the other end is fixed on the hook (26) of support arm (9), locking clamp (6) is installed on the adhesive moving armature (2), breaking coil (12 is arranged in tripping operation moving armature (10) corresponding position, TQ) on tripping operation static gag bit (11).

2, A.C. contactor according to claim 1, it is characterized in that having power failure automatic trip circuit and in parallel the electrically connecting of breaking coil (TQ), this power failure automatic trip circuit is composed in series by auxiliary relay (ZJ), resistance (1R), diode (3D, 1D), electric capacity (2C).

3, A.C. contactor according to claim 1 and 2, the lever ratio that it is characterized in that discharging crotch (7) is L:N=4-8.