CN1121636A

CN1121636A - Electric magnetic contactor

Info

Publication number: CN1121636A
Application number: CN 94117584
Authority: CN
Inventors: 日向正光
Original assignee: Fuji Electric Co Ltd
Current assignee: Fuji Electric Co Ltd
Priority date: 1994-10-26
Filing date: 1994-10-26
Publication date: 1996-05-01

Abstract

The electromagnetic portion possesses of a kind of simple structure, which can prevent looseness produced between the yoke iron and the coil former and the deviation of the lever fulcrum pivot produced while installing the lever. A pair of arms are installed on the external side faces of the coil former, and a pair of lever holding pieces are installed on the middle of this pair of arms. The side wall of the yoke iron is inlaid in the gap between the fitting lug stretched from the arms and the external side surfaces of the coil former. The lever fulcrum pivot is inserted in and supported in the through hole of the lever holding piece.

Description

Electromagnetic contactor

The invention relates to electromagnetic contactor, specially refer to the assembly structure of its electromagnet part.

Fig. 4 is the sectional view of existing electromagnet contactor, and Fig. 5 is the exploded perspective view of its electromagnet part.This electromagnetic contactor relatively disposes the electromagnet portion of contact portion and this contact portion of driving across insulation board 2 in the inside of its shell 1.Contact portion by main contacts (fixed contact 3A, moving contact 3B), moving contact 3B be housed and formed by the coupled moving contact support 5 of contact spring 4, the back-moving spring 6 of on moving contact support 5, keeping reset force, main contacts is provided with a plurality of, can be contact a, or contact b, or contact a, b mix setting.Electromagnet portion is made of following each several part: the magazine 8 that is wound with solenoid 7; Be fixed on the secured core 9 of the hollow space of magazine 8; The hollow space that inserts magazine 8 and secured core 9 are relative and be attracted the movable core 10 that moves to secured core 9 by the excitation of solenoid 7; Yoke 11 as the magnetic circuit function of secured core 9 and movable core 10 is arranged; The action of movable core 10 is delivered to the lever 12 of moving contact support 5.The assembling of this electromagnet portion is undertaken by the order shown in the direction of arrow among Fig. 5.That is to say, to be arranged in the hole 10a that shank 12b below the fulcrum pivot pin 12a of lever 12 inserts movable core 10, and keep this state to inject again among the hollow bulb 8a of magazine 8, the fulcrum pivot pin 12a of lever 12 is inserted the groove of a pair of trough of belt sheet 8b that stretches out from magazine 8 lateral surfaces.Secured core 9 also is inserted and secured among the hollow bulb 8a of magazine 8, makes relative with movable core 10.The magazine 8 that will be in such state is assemblied on the yoke 11 like this, at this moment a pair of trough of belt sheet 8b that stretches out from the lateral surface of magazine 8 stretches out laterally from the 11a of side cutout portion of yoke 11 1 ends, and the jag 9a of secured core 9 is inlaid among the 11b of window portion of yoke 11 other end sides.In order not make magazine 8 and yoke 11 loosening, between the side of the band window of the side of magazine 8 other ends and yoke 11, be inserted with flexible pad 13.When putting into shell 1,, will plug latch 14 and hammer into movable core 10 for the fulcrum pivot pin 12a that prevents lever 12 moves.

In electromagnet structure partly in the past, use pad 13 in order to prevent magazine from becoming flexible, in order to prevent moving and plug latch 14 of balance pivot pivot pin, institute thereby exists that assembling work degenerates, cost improves such problem so that number of components increases.

The objective of the invention is in view of the above problems, the electromagnetic contactor that a kind of component number reduces, assembling work is good, manufacturing cost is low again is provided.

In the present invention, in order to address the above problem, by main contacts (fixed contact and moving contact), the moving contact support, the contact portion that back-moving spring etc. constitute, with by the magazine that is wound with solenoid, yoke, secured core, the electromagnet portion that movable core etc. constitute, relatively be configured in enclosure by insulation board, contact portion is carried out in the electromagnetic contactor of break-make being delivered to moving contact in order to action with movable core, be respectively arranged with outwardly directed arm on the lateral surface both sides of the magazine that is inserted with the movable core side, a pair of lever supporting pieces stretches out the middle place that is arranged on this a pair of arm.This arm be shaped as the rectangular flat plate shape, the one end is connected with the lateral surface of magazine and vertically stretches out, the side walls of yoke is inlaid in the cooperation protuberance that is arranged on its outside planar portions and the gap location between the magazine lateral surface.The shape of lever supporting pieces also is the rectangular flat plate shape, be arranged in parallel with arm, is equipped with the through hole that can match with the balance pivot pivot pin on its free end, is provided with notch between this through hole and free end face and with the position of its opposite side.

Because the balance pivot pivot pin is inserted in the through hole of lever supporting pieces, so can not move to the axial and right angle orientation of fulcrum pivot pin, because the side walls intercalation of yoke is in the gap of the lateral surface of the cooperation protuberance of arm and magazine, so can not become flexible between yoke and the magazine.

The present invention will be described below with reference to accompanying drawings and in conjunction with the embodiments.

Fig. 1 is the profile of the embodiment of the invention;

Fig. 2 is the exploded perspective view of electromagnet part among Fig. 1;

(A) is the enlarged detail at the arrow P indication position among Fig. 2 among Fig. 3; (B) be the end view of lever supporting pieces end in (A); (C) be the end view that the fulcrum pivot pin inserts through hole;

Fig. 4 is the profile of existing electromagnetic contactor;

Fig. 5 is the perspective view of the electromagnet part among Fig. 4.

In Fig. 1, Fig. 2 with Fig. 4, Fig. 5 in identical parts represent with prosign.In this embodiment, for preventing yoke 11 and the magazine 8 loosening pads that do not re-used, but on the lateral surface of coil 8, the side of the band notch 11a of yoke 11 is embedded in the gap between the lateral surface of cooperation protuberance 14a on the outer side plane of the arm 14 that is vertically stretching out and magazine 8, yoke 11 and magazine 8 are combined.Be the skew that prevents lever 11 plug latch no longer, but the fulcrum pivot pin 12a of lever 12 is inserted in the through hole 16, this through hole 16 lays respectively on a pair of lever supporting pieces 15 that stretches out in the outside from magazine 8 in the middle of the above-mentioned a pair of arm 14.This through hole 16 because of having two notch 17a, 17b on lever supporting pieces 15, so the inlet of through hole 16 is fully expanded out, and is easy to embed the fulcrum pivot pin shown in Fig. 3 (B).The top of fulcrum pivot 12a shown in Fig. 3 (C), make it to become as the cutting two sides flat, also can be only at the one-sided notch 17a that links to each other with through hole that is provided with.

In the present invention, because the side walls setting-in of yoke is advanced and magazine simultaneously in the gap between the lateral surface that cooperates protuberance and magazine of integrated a pair of arm, the fulcrum pivot pin of lever injects in the through hole that is arranged on a pair of lever supporting pieces, so no longer need anti-loosening and anti-offset parts, thereby make assembling become easier, manufacturing cost reduces.

Claims

1, a kind of electromagnetic contactor, by main contacts (fixed contact and moving contact), the moving contact support, the contact portion that back-moving spring etc. constitute, with by the magazine that is wound with solenoid, yoke, secured core, the electromagnet portion that movable core etc. constitute, relatively be arranged on enclosure by insulation board, thereby the action of movable core is delivered to the break-make of moving contact control contact portion, it is characterized in that each arm stretches out respectively on the both sides of the lateral surface that is inserted with movable core that is arranged on magazine, a pair of lever supporting pieces stretches out the centre that is arranged on this a pair of arm.

2, according to the described electromagnetic contactor of claim 1, the shape that it is characterized in that arm is the rectangular flat plate shape, the one end is connected with the magazine lateral surface and vertically stretches out, and the side walls of yoke is inlaid in the cooperation protuberance and the gap between the magazine lateral surface that is arranged on its outside planar section.

3, according to the described electromagnetic contactor of claim 1, the shape of a pair of lever supporting pieces that it is characterized in that being arranged on the centre of a pair of arm is the rectangular flat plate shape, be arranged in parallel with arm, be equipped with the through hole that can match with the fulcrum pivot pin of lever on its free end, relative position is provided with notch between this through hole and the free end face and with it.