CN2369346Y

CN2369346Y - Self locking A. C. Contactor

Info

Publication number: CN2369346Y
Application number: CN 99211898
Authority: CN
Inventors: 孙凤广
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-05-27
Filing date: 1999-05-27
Publication date: 2000-03-15
Anticipated expiration: 2009-05-27

Abstract

The utility model relates to a self locking AC contactor, which belongs to the field of an electric operating device. Besides the self locking AC contactor has a body structure of a common contactor, the self locking AC contactor is also provided with an auxiliary iron core (8), matched auxiliary coils (9), and a released armature (10); the self locking AC contactor can drive a lock tongue (11), and a lock body 14 which is made to control opening (release) or locking (attraction) of a movable iron core (3) is opened or locked. Accordingly, switching of a controlled circuit is controlled, and the coils can use pulsating dc for power supplying. The self locking AC contactor has beneficial points that the two coils can be energized only when the controlled circuit is attracted or switched on and is released or broken; in the operating process of the controlled circuit, the self locking AC contactor has no power consumption, no electromagnetic noise, and no vibration; the attraction and the release are safe; service life is long; fabrication process is simple, and cost is low.

Description

Self-latching type ac contact means

The utility model belongs to electrical operation device field, relates to a kind of self-latching type ac contact means.

In the prior art, extensive use single, the three-phase ac contactor of decades, in electrical operation, there is electric current to pass through in the coil all the time, therefore, useless power consumption in service is big, coil easily burns, and starts the adhesive instability, and electromagnetic noise is big, vibration is big, and ablated greatly because of electric arc in the contact, accidents happened thereby cause controlled circuit; Only from power consumption, estimate according to relevant department, at present, China has 4,000 ten thousand A.C. contactors to be in operation approximately, year power consumption only this item reaches more than 10,000,000,000 kilowatt-hours, State Council once pointed out to implement the A.C. contactor power-saving measures in No. 2 literary composition of (1981) No. 56 file distribution economize on electricity instruction as far back as 1981, but do not tackle the problem at its root always, the method that is adopted is that the electronics auxiliary circuit externally is installed mostly, but still have electric current to pass through in the electrical operation in the coil all the time, useless power consumption in service descends few, and the safety and stability of operation does not have improvement yet, add common electrician and lack electronic technology, be difficult to apply.

The purpose of this utility model is, a kind of self-latching type ac contact means is provided, and adopts mechanical self-latching, electromagnetism lock-opening style two coil configuration, two coils are only connected the moment energising that disconnects control circuit with release in adhesive respectively, have electric current to pass through, thereby controlled circuit is in service, contactor does not have power consumption, and coil can not burn because of heating, non-electromagnetic noise, friction, adhesive is safe and reliable with release, the contact is difficult for ablating, and increases the service life, and helps improving the safety and stability of electrical operation greatly; In addition, basically adopt general CJ10-X series agent structure standard, do not change installation dimension, the wiring change is little, iron core also needn't use the higher punching press silicon steel laminations of cost, can directly use the whole punch forming of soft iron (promptly can not be magnetized pure iron one as follows), and manufacture craft is easy, cost is low, suitable especially mass industrialized production; Can cancel in the prior art simultaneously, auxiliary contact are often driven in common start button two ends and the self-locking that connects.

Concrete scheme of the present utility model is as follows:

Self-latching type ac contact means, have main coil 1, main (quiet) iron core 2, moving iron core 3 with and supporting main stage clip 4, moving contact and corresponding mechanism 5, fixed contact 6, outer casing frame 7 and corresponding binding post, it is characterized in that: also have secondary iron core 8 and the supporting secondary coil 9 that is connected as a single entity with main (quiet) iron core 2 and discharge armature 10, one end hinge type of this armature is fixed on the secondary iron core 8, the movable dead bolt 11 that connecting of its other end, the location is with secondary stage clip 12 on this dead bolt, and has the head 13 of isosceles triangle; The parallel sliding orientation, the left and right sides that dead bolt 11 produces under the effect that discharges armature 10 and secondary stage clip 12, must with lock body 14 open or locking corresponding; Lock body 14 is identical by two shape specification, and half sheet that symmetry is placed is formed, and per half sheet is positioned on the skeleton top board of main coil 1 by the bearing pin 15 of its base portion rotationally, and two and half sheet base portions are connecting an extension spring 16 on the top; Central part formed a rectangle hole 17 after two and half sheets coincide, and its size is corresponding with the perpendicular leg shape of cross section size of moving iron core 3; The inner side edge central part of per half sheet has an export-oriented projection 18, and this projection is corresponding with the groove 19 of the relative both sides of perpendicular leg of moving iron core 3 respectively, and promptly after descending the putting in place of moving iron core 3 adhesives, projection 18 just slips in the groove 19; After two and half sheets coincide, afterbody formed the breach 20 of an isosceles triangle, and is corresponding with the head 13 of the isosceles triangle of dead bolt 11.

Usefulness of the present utility model is: two coils of contactor are only connected the moment energising that disconnects control circuit with release in adhesive respectively, there is electric current to pass through, thereby controlled circuit is in service, contactor does not have power consumption, coil can not burn because of heating, non-electromagnetic noise, friction, and adhesive is safe and reliable with release, the contact is difficult for ablating, and increases the service life; Basically adopt general CJ10-X series agent structure standard, iron core can be directly with the whole punch forming of soft iron, and manufacture craft is easy, and cost is low.

Accompanying drawing 1, total assembling structure and wiring schematic diagram;

Accompanying drawing 2, A-A cutaway view;

Accompanying drawing 3, A are to view;

Accompanying drawing 4, the direct control circuit figure of button;

Accompanying drawing 5, threephase asynchronous positive and reverse rotation control circuit figure;

Embodiment: in conjunction with the accompanying drawings, further auspiciously add explanation; The QA-start button; The TA-stop button; Because of coil is instantaneous energising, for reducing cost, iron core is the soft iron material global formation, does not have laminated construction, secondary iron core 8 and main (quiet) iron core 2 integrated processing.

Main coil 1 adopts pulse DC supply, series connection rectifying transistor D in its loop ₁, afterflow transistor D in parallel ₂Thereby, increase the suction-combining force, and make suction steadily moving moving iron core 3.

Secondary coil 9 adopts pulse DC supply, series connection rectifying transistor D in its loop ₃, afterflow transistor D in parallel ₄Thereby, increase the suction-combining force, and make suction steadily moving release armature 10.

Action principle: illustrated in conjunction with the accompanying drawings;

Before the startup, the breach 20 of the isosceles triangle that afterbody formed after the head 13 of the isosceles triangle of dead bolt 11 coincide with 14 two half sheets of lock body is unconnected, and lock body 14 is open-shaped; Click start button QA, the power connection of main coil 1, magnetic field is crossed and formed to the electric current transient flow, thereby will move descending the putting in place of iron core 3 adhesives, drives the moving contact and corresponding mechanism 5 actions and fixed contact 6 closures of often opening, controlled circuit energising operation, meanwhile, under the effect of extension spring 16, the projection 18 on two and half sheets of lock body 14 slips in the groove 19 of the relative both sides of perpendicular leg of moving iron core 3, moving iron core 3 is lockable, and 14 two half sheets of lock body coincide; Unclamp start button QA, the electric power disconnection of main coil 1, and magnetic field disappears, moving iron core 3 can not return because of being lockable, and controlled circuit continues the energising operation, and main stage clip 4 is compressed at this moment.

When controlled circuit is out of service, click stop button TA, the power connection of secondary coil 9, magnetic field is crossed and formed to the electric current transient flow, thereby discharging armature 10 adhesives puts in place, promoting dead bolt 11 simultaneously slides left, impact and back down the breach 20 of the isosceles triangle of the identical back of 14 two half sheets of lock body afterbody formation by the head 13 of its isosceles triangle, two and half sheets of lock body 14 are opened outside base portion bearing pin 15 respectively, open-shaped, thereby make projection 18 deviate from groove 19, so moving iron core 3 is released up return under the effect of main stage clip 4; Drive moving contact and corresponding mechanism 5 actions separate with fixed contact 6, and the controlled circuit outage is stopped transport, and this moment, secondary stage clip 12 was compressed; Unclamp stop button TA, the electric power disconnection of secondary coil 9, and magnetic field disappears, so discharging armature 10 is released under the effect of secondary stage clip 12, and driving dead bolt 11 return that slides to the right, the head 13 of its isosceles triangle leaves breach 20, state before lock body 14 recovers to start.

Self-latching type ac contact means may be used on anti-riot type contactor and other the multiple electromagnetic switch.

Secondary circuit connection principle applicating example:

The GJZi-self-latching type ac contact means,

Normally opened contact,

Normally-closed contact, QAi start button, TA stop button, K protective circuit contact, A, B (N) phase line.

Example 1, the direct control circuit of button, as shown in Figure 4;

Example 2, threephase asynchronous positive and reverse rotation control circuit, as shown in Figure 5;

Claims

1, self-latching type ac contact means, has main coil (1), main (quiet) iron core (2), moving iron core (3) with and supporting main stage clip (4), moving contact and corresponding mechanism (5), fixed contact (6), outer casing frame (7) and corresponding binding post, it is characterized in that: also have secondary iron core (8) and the supporting secondary coil (9) thereof that is connected as a single entity with main (quiet) iron core (2) and discharge armature (10), one end hinge type of this armature is fixed on the secondary iron core (8), the movable dead bolt (11) that connecting of its other end, the location is with secondary stage clip (12) on this dead bolt, and has the head (13) of isosceles triangle; The left and right sides parallel sliding of dead bolt (11) generation under the effect that discharges armature (10) and secondary stage clip (12), must with lock body (14) open or locking corresponding; Lock body (14) is made up of two shape specification half sheets identical, that symmetry is placed, and per half sheet is positioned on the skeleton top board of main coil (1) by the bearing pin (15) of its base portion rotationally, and two and half sheet base portions are connecting an extension spring (16) on the top; Central part formed a rectangle hole (17) after two and half sheets coincide, and its size is corresponding with the perpendicular leg shape of cross section size of moving iron core (3); The inner side edge central part of per half sheet has an export-oriented projection (18), and this projection is corresponding with the groove (19) of the relative both sides of perpendicular leg of moving iron core (3) respectively, and promptly after descending the putting in place of moving iron core (3) adhesive, projection (18) just slips in the groove (19); Two and the half sheets back afterbody that coincide forms the breach (20) of an isosceles triangle, and is corresponding with the head (13) of the isosceles triangle of dead bolt (11).

2, self-latching type ac contact means according to claim 1 is characterized in that: iron core is the soft iron material global formation, does not have laminated construction, secondary iron core (8) and integrated the processing of main (quiet) iron core (2).

3, self-latching type ac contact means according to claim 1 and 2 is characterized in that: main coil (1) adopts pulse DC supply, series connection rectifying transistor D in its loop ₁, afterflow transistor D in parallel ₂

4, self-latching type ac contact means according to claim 1 and 2 is characterized in that: secondary coil (9) adopts pulse DC supply, series connection rectifying transistor D in its loop ₃, afterflow transistor D in parallel ₄

5, self-latching type ac contact means according to claim 3 is characterized in that: secondary coil (9) adopts pulse DC supply, series connection rectifying transistor D in its loop ₃, afterflow transistor D in parallel ₄