CN2335252Y

CN2335252Y - Electromagnetic ac contactor

Info

Publication number: CN2335252Y
Application number: CN 97246524
Authority: CN
Inventors: 胡金林; 胡贵林; 郑洁; 张定富; 周朝义
Original assignee: SANLIN MACHINE TOOL ELECTRIC APPLIANCE FACTORY YUEQING CITY
Current assignee: SANLIN MACHINE TOOL ELECTRIC APPLIANCE FACTORY YUEQING CITY
Priority date: 1997-12-25
Filing date: 1997-12-25
Publication date: 1999-08-25
Anticipated expiration: 2007-12-25

Abstract

The utility model relates to an electromagnetic alternating current contactor, comprising a shell body, a basic frame, an end cover, an electromagnetic system, a contactor and arc extinguishing system, and an auxiliary switch. A double magnetic yoke and double coil is arranged in the shell body. The shell body is provided with a support plate. The lower part of the support plate is provided with an antagonistic spring, and the upper part of the support plate is provided with an armature iron and a moving contact support member. The shell body side is provided with the auxiliary switch which is linked with the moving contact support member. The shell body is provided with the basic frame of a static contact. The basic frame is provided with an end cover which is provided with an arc-extinguishing chamber. The utility model belongs to the double breakpoint directly operated type structure, and has the advantages of stereo arrangement, compact structure, and convenient coil replacement. The rated operating current is 250A, 300A, 370A and 550A. The utility model is a replaceable product for the old type alternating current contactors of CJ10 type, etc.

Description

A kind of electromagnetic AC contactor

The utility model relates to a kind of A.C. contactor.

A.C. contactor is a kind of electrical equipment that is applicable to remote connection continually and disjunction alternating current circuit.At present, A.C. contactor various in style, modal is electromagnetic AC contactor, by electromagnetic system, contact and arc quenching system, auxiliary contact, support or shell etc. are partly formed, as CJ10, CJ12, CJ20, B, 3TB, LC1, DSL, CJ16, CJ19, CJZ etc., its operation principle is: after the sucking coil energising, electromagnetic system promptly changes electric energy into mechanical energy, the electromagnetic attraction that is produced overcomes the reaction force of antagonistic spring and touch spring, make iron core inhale platform, and the drive contact supporting makes, the fixed contact contact is closed, thereby finishes the operation of connecting main circuit; When sucking coil outage or voltage significantly descend, because electromagnetic attraction disappears or is too small, the tripping under spring reaction of armature and moving contact, when opening, contact produces electric arc, electric arc moves rapidly under the electrodynamic driving in loop, and free extinguishing gone in cooling in arc control device, last disjunction main circuit.Yet along with improving constantly of plant equipment automaticity, technical performance (such as frequency of operation, reliability, useful life etc.) to A.C. contactor has proposed more and more higher requirement, use the requirement of aspects such as adaptability also more and more urgent again because the demand in market is increasing, thereby in saving material (particularly saving silver, copper), reduced volume, raising.Exist defective in design as CJ10 etc., 40A and following grade adopt double break point direct dynamic structure, the three-dimensional layout of formal dress, and the above grade of 60A adopts double break point rotational structure, floor plan, and volume is big, be eliminated, need novel A.C. contactor and replace it.

The purpose of this utility model is to provide a kind of novel A.C. contactor, and its machine shape is attractive in appearance, simple in structure, the dismounting is easy to maintenance, has higher rated operational current and volume is less.

For achieving the above object, the solution that the utility model is taked is: a kind of electromagnetic AC contactor, it comprises housing, pedestal, end cap, electromagnetic system, contact and arc quenching system, auxiliary switch, arrange two yoke twin coils in the housing, support plate has antagonistic spring under the two ends, armature imbeds support plate and puts into moving contact and prop up the part lower end, moving contact props up part and installs with support plate, auxiliary switch is contained in housing one side, moving contact props up the part motion and drives the auxiliary switch action, the pedestal reeve moving contact that fixed contact is housed props up part and is installed on the housing, and moving contact is put into moving contact respectively and propped up in three terminations, part top, and the end cap that has six arc control device is installed on the pedestal.

The utility model belongs to double break point direct dynamic structure, the three-dimensional layout, and its compact conformation, volume be less, more quite convenient, the good looking appearance of emat coil, dependable performance, flexible movements, long service life, is the renewal product of old type A.C. contactor such as CJ10.Its operation principle is: after the twin coil energising, the resistance that attracts armature to overcome antagonistic spring drives support plate and moving contact and props up part and move downward, make the fixed contact closure on moving contact and the pedestal, drive auxiliary switch action simultaneously, the normally closed interlock that makes auxiliary switch separately, the normally open contact closure; When control during power cut-off or voltage when significantly descending, because the electromagnetic attraction that twin coil produces disappears or is too small, making moving contact prop up part under the effect of antagonistic spring moves upward, moving contact separates with fixed contact, moving contact in the auxiliary switch is got back to normally closed interlock simultaneously, and contactor is in the disjunction state.The utility model rated operational voltage 660V, rated operational current 250A, 300A, 370A, 550A, specified power controlling 250～500KW under AC-2, AC-3 use classes, 600 times/h of frequency of operation, connect breaking capacity: connect I/Ie=10, disjunction I/Ie=8, operating characteristics: 89%～110%V _sAdhesive ,≤75%V _sDischarge, the mechanical endurance 〉=6,000,000 times, electric life 〉=100,000 time.It can form electromagnetic starter with suitable thermal relay, to protect the circuit that may transship.

Below in conjunction with accompanying drawing the utility model is described in further detail.

Fig. 1 is a vertical view of the present utility model.

Fig. 2 is a front portion of the present utility model cutaway view.

Fig. 3 is that fragmentary cross-sectional view is looked on the right side of the present utility model.

Fig. 4 is a schematic perspective view of the present utility model.

As shown in Figure 3, with two axles (26) with two yokes (24) bolt in housing (1), put twin coil (25), the terminals of twin coil (25) have coil terminal screw (3) outside housing (1), the overall plastic envelope of twin coil (25).As shown in Figure 2, support plate (22) has antagonistic spring (23) under the two ends, armature (14) imbeds support plate (22) and puts into moving contact and prop up part (7) lower end, prop up between part (7) and the armature (14) at moving contact and to also have a block buffering pad (13), it is fixing with four screws (21) with support plate (22) that moving contact props up part (7), auxiliary switch (9) is contained in housing (1) one side, and moving contact props up part (7) motion and drives auxiliary switch (9) action.Pedestal (20) the reeve moving contact that fixed contact (2) (4) (6) is housed props up part (7) and is placed on the housing (1), and is fixing with four screws (12).Moving contact props up three terminations, part (7) top and uses bolt (15) and springs (16) to load onto moving contact (17) respectively, and the end cap (8) that has six arc control device (11) is placed on the pedestal (20).In the location hole on both sides (10) lining separately together with retainer spring (19) and locating pin (18) joint.As shown in Figure 1, in the middle of end cap (8), can depress moving contact and prop up part (7), earthing screw (5) is arranged before and after housing.As shown in Figure 4, the utility model is three-dimensional arrangement.

Claims

1, a kind of electromagnetic AC contactor, it comprises housing (1), pedestal (20), end cap (8), electromagnetic system, contact and arc quenching system, auxiliary switch (9), it is characterized in that: arrange two yoke (24) twin coils (25) in the housing (1), support plate (22) has antagonistic spring (23) under the two ends, armature (14) imbeds support plate (22) and puts into moving contact and prop up part (7) lower end, moving contact props up part (7) and installs with support plate (22), auxiliary switch (9) is contained in housing (1) one side, moving contact props up part (7) motion and drives auxiliary switch (9) action, pedestal (20) the reeve moving contact that fixed contact (2) (4) (6) is housed props up part (7) and is installed on the housing (1), moving contact (17) is put into moving contact respectively and is propped up in three terminations, part (7) top, and the end cap (8) that has six arc control device (11) is installed on the pedestal (20).

2, a kind of electromagnetic AC contactor according to claim 1 is characterized in that: the overall plastic envelope of twin coil (25).

3, a kind of electromagnetic AC contactor according to claim 1 is characterized in that: prop up between part (7) and the armature (14) at moving contact and also have a block buffering pad (13).

4, a kind of electromagnetic AC contactor according to claim 1 is characterized in that: end cap (8) and pedestal (20) both sides location holes (10) lining engage together with retainer spring (19) and locating pin (18).