CN1677601A

CN1677601A - Electromagnetic relay

Info

Publication number: CN1677601A
Application number: CN 200510004598
Authority: CN
Inventors: 西山健; 真田博纪; 田中弘泰
Original assignee: Omron Corp
Current assignee: Omron Corp
Priority date: 2004-03-31
Filing date: 2005-01-18
Publication date: 2005-10-05
Anticipated expiration: 2025-01-18
Also published as: CN100351974C; JP2005293952A; JP4329598B2

Abstract

The invention provides an electromagnetic relay easy to assemble, with high productivity and assembling accuracy, without generating scatter of operation property. A movable iron piece 50 rotating according to the excitation and degauss of an electromagnet block 40 passes through a card 30 of an operation hole 11a and a contact institute is driven by the rotary card 30. Especially, the electromagnet block 40 is press fitted and fixed to the upper space part 17 of the base 10 by sliding it from side parts in a short side direction.

Description

Electromagnetic relay

Technical field

The present invention relates to electromagnetic relay, particularly install and be easy to electromagnetic relay.

Background technology

In the past, as the electromagnetic relay that can assemble electromagnet assembly, for example form the insulation gap wall 8 of cross section " コ " shape in the pars intermedia setting of pedestal 2, but the body 5b of edge insulator 5 is set in moving contacting plate 7 sides of described spaced walls 8, protuberance 5a is set on the back side of described edge insulator 5, the hole 9 of slotting described protuberance is provided for moving about on described insulation gap wall 8, so that the back side that makes described protuberance 5a face described insulation gap wall 8 also can be clamped on the bottom of armature 4, form described hole 9 and make it cover (with reference to patent documentation 1) by the body 5b of described edge insulator 5.

[patent documentation 1] (Japan) spy opens the 2001-84883 communique

But, in described electromagnetic relay, the assembling distance when on pedestal, assembling electromagnet assembly.And, the location originally that can't confirm on substrate, to assemble electromagnet assembly with eyes, and inaccurate.Therefore produce following problem: assembling is not easy, and not only productivity ratio is low, and is difficult to obtain high assembly precision, is easy to generate deviation in operating characteristics.

Summary of the invention

The present invention is in view of described problem, and its purpose is to provide a kind of electromagnetic relay, and assembling is easy and productivity ratio is high, while assembly precision height, and in operating characteristics, do not produce deviation.

Electromagnetic relay of the present invention is in order to reach above-mentioned purpose, it and is electromagnetic relay described below: the pars intermedia of the rectangular pedestal cross section insulation of " コ " shape spaced walls roughly that is arranged on lateral openings roughly on the plane, be spaced apart spatial portion and superjacent air space portion below long side, a reciprocal side opening respectively, simultaneously by constituting with lower member: pedestal is provided with handle hole with spatial portion below described and the connection of described superjacent air space portion in described insulation with the upper surface of spaced walls; Contact mechanism portion is arranged in the spatial portion of described below; Card is mounted pivotably under described handle hole, and drives described contact mechanism portion; Electromagnet assembly has winding around on the cylindrical portion of spool of convex shoulder, and iron core is pressed in the centre bore of described cylindrical portion at two ends; Roughly L shaped movable iron, be supported in rotationally on the described electromagnet assembly, and be positioned at described handle hole directly over, operate described card by the described movable iron of rotating from described handle hole according to excitation, the demagnetization of described electromagnet assembly, and drive described contact mechanism portion with the described card that rotates, wherein

Described electromagnet assembly is slipped into from side direction along short side direction the superjacent air space portion of described pedestal and be pressed into, fixing.

According to the present invention, owing to making electromagnet assembly slip in the superjacent air space that is arranged on the pedestal from the side along short side direction and being pressed into, fixing, so the assembling distance is short.And then, can confirm electromagnet assembly is assembled into location originally on the described pedestal with eyes, and can correctly carry out installation exercise.Therefore, assembling is easy, and the productivity ratio height, can obtain high assembly precision simultaneously, and do not produce deviation in operating characteristics.

Embodiments of the present invention also can be following structure: in the not integrally formed coil terminals maintaining part in side marginal portion of the equidirectional of the convex shoulder of spool, this coil terminals lower surface coplanar of maintaining part bottom and pedestal, and the lateral surface coplanar of lateral surface and pedestal is connected simultaneously the lateral surface of described coil terminals usefulness maintaining part on the medial surface of the box-shaped enclosure that cooperates with described pedestal.

According to present embodiment, have coil terminals to stop encapsulant to be invaded with protection portion, and can prevent below the effect of the contact mechanism portion action condition of poor that is provided with in the spatial portion.

Description of drawings

Fig. 1 is the front elevation of the execution mode of expression electromagnetic relay of the present invention.

Fig. 2 is the front longitudinal section of the execution mode of expression electromagnetic relay of the present invention.

Fig. 3 is the lateral longitudinal sectional view of the execution mode of expression electromagnetic relay of the present invention.

Fig. 4 is the assembling stereogram of the execution mode of expression electromagnetic relay of the present invention.

Fig. 5 is the assembling stereogram of watching from the visual angle different with Fig. 4.

Fig. 6 A, 6B are the stereograms of card shown in Figure 4.

Fig. 7 A, 7B are the stereograms of electromagnet assembly shown in Figure 4.

Embodiment

Execution mode according to the description of drawings electromagnetic relay of the present invention of Fig. 1 to Fig. 7.

As shown in Figure 4, the electromagnetic relay of present embodiment comprises: pedestal 10, fixed contact terminals 20, moving contact terminal 25, card 30, the electromagnet assembly 40 of rotatably support movable iron 50, shell 60.

Pedestal 10 with roughly the insulation gap wall 11 of " コ " shape is integrally formed to the cross section of side opening, is formed on reciprocal side the below spatial portion 12 and the superjacent air space portion 17 of opening respectively by portion therebetween.And, below described in the spatial portion 12, be provided with respectively along mounting direction and be pressed into flange (rib) 13, be pressed into

groove

14,15 and bearing groove 16, this is pressed into flange and can be pressed into fixed contact terminals 20 described later, moving contact terminal 25 respectively from the side and blocks 30.On the other hand, as shown in Figure 5, when making electromagnet assembly described later slip into the superjacent air space portion 17 of described pedestal 10 from the side and assembling, on medial surface in the side outstanding being pressed into of edge part that is provided for being pressed into and keeps the horizontal part 46a of yoke 46 with prominent bar 18.And then, the handle hole 11a that described below spatial portion 12 and described superjacent air space portion 17 are communicated with is set on the described insulation gap wall 11.

As shown in Figure 4, near described fixed contact terminals 20 riveted and fixed fixed contact 22 front end of horizontal part 21.And, described fixed contact terminals 20 is slided from the side, and engage with being pressed into of described pedestal 10 with flange 13, by being pressed into groove 14, described fixed contact terminals 20 is fixed on the described pedestal 10 simultaneously.

But in the described moving contact terminal 25 be with moving contact 27 riveted and fixed in riveted and fixed the structure of pars intermedia of moving contacting plate 26 of one end.And, slide to being pressed into groove 15 and being pressed into of described pedestal 10 from the side by making described moving contact terminal 25, and be fixed on the described pedestal 10, simultaneously described moving contact 27 can contact or leave opposed with described fixed contact 22.

In addition, in the present embodiment, form the contact mechanism portion that often opens by fixed contact terminals 20 and moving contact terminal 25, but be not necessarily limited to this, also passable for normally closed contact mechanism portion, perhaps also can be Chang Kai and normally closed contact mechanism portion.

As shown in Figure 6, card 30 is the roughly rectangular plate body in plane, and at the integrally formed rotation axis 31 of the distolateral edge part of one, and the pars intermedia formation on surface is pushed with protuberance 32 thereon, and pushes with protuberance 33 in the leading section setting of its lower surface.And, by in the bearing groove 16 of side, and it is rotatably supported in the below spatial portion 12 of described pedestal 10 the described pedestal 10 of described rotation axis 31 insertions.And, described card 30, but it pushes the free end 28 that abuts to moving contacting plate 26 with jut 33, be positioned at simultaneously described insulation gap wall 11 handle hole 11a under.In addition, also can be after having assembled electromagnet assembly 40 described later and assemble described card 30.And, in this case, because pushing with protuberance 32 and pushing with projection 33 of card 30 all has taper surface, but so needn't be specially with expansion between the horizontal part 52 of movable iron 50 and the moving contacting plate 26, and only just can once-through operation finish assembling by described card 30 being pressed in the described pedestal 10.

As shown in Figure 7, electromagnet assembly 40 will have winding around 44 on the cylindrical portion 41a of spool 41 of

convex shoulder

42,43 at two ends.And, be pressed into the roughly iron core 45 of T shape of cross section among the centre bore 41b of described cylindrical portion 41a, with an outstanding end as magnetic pole piece 45a, and with outstanding the other end 45b riveted and fixed on roughly L shaped yoke 46.And, integrally formed coil

terminals maintaining part

47,48 on the side edge part of the same direction side of described convex shoulder 42,43.And described coil terminals is with being pressed into

coil terminals

49a, 49b respectively in the

foot section

47,48, and the end bundlees the lead-in wire and the scolder welding of described coil 45 thereon simultaneously.

And, the movable iron 50 of bending via hinge spring 53 (with reference to Fig. 2) by the front end of free rotation ground supporting at the horizontal part 46a of described yoke 46.Therefore, the vertical component effect 51 of described movable iron 50 can contact or leave opposed with the magnetic pole piece 45a of described iron core 45.

Described coil

terminals maintaining part

47,48, the lateral surface coplanar of its lateral surface and pedestal 10, the bottom surface coplanar of its bottom and pedestal 10 simultaneously.This is owing to when injecting closed material, described closed material is not invaded in the spatial portion 12 of below.And then, described coil terminals with maintaining part about in the of 47,48 total length be not tubular, half is roughly L shaped

cap

47a, 48a of cross section for a downside, half a part of the downside of

coil terminals

49a, 49b is exposed.This is owing to keep described coil terminals also to carry out ester moulding easily with the mechanical strength of maintaining

part

47,48, can easily carry out the operation that is pressed into of

coil terminals

49a, 49b simultaneously.

In addition, even with described coil terminals 49a, bending when 49b is pressed into spool 41, coil terminals is with cap 47a, the 48a of maintaining

part

47,48 and the also bending of correcting

coil terminal

47a, 48a of lateral surface of pedestal 10, so no problem in practicality.

And among cap 47a, the 48a, the part that is not connected on the shell 60 needn't be set between

opposed coil terminals

49a, 49b, also can be arranged on the described coil terminals 49a of opposition side, the outside of 49b.

And, as shown in Figure 5, when described electromagnet assembly 40 is assembled from the side slip along the upper surface of

insulation gap wall

11,30 push with protuberance 32 and depress and after passing through will be blocked in the bottom surface of described yoke 46, be pressed into the terminal stage of operation, between the upper surface of outstanding prominent bar 18 that is provided with of the medial surface of described pedestal 10 and described insulation gap wall 11, the edge part of the horizontal part 46a of yoke 46 is pressed into and keeps.Its result, the lower surface of the horizontal part 52 of movable iron 50 is crimped onto pushing with protuberance 32 (Fig. 2) of card 30 via handle hole 11a.And then, the bottom of coil

terminals maintaining part

49a, 49b and the lower surface coplanar of pedestal 10.

According to present embodiment, owing to the width dimensions (depth size) of the electromagnet assembly 40 that can only slide is assembled, thus the location not only can confirm assembling the time with eyes, and the assembling distance is short.Special electromagnet assembly 40 is fixed on the pedestal 10 owing to the terminal stage at assembling operation, so do not need too big pressure in the assembling operation, assembling operation is easy.And, according to present embodiment and since

coil terminals

49a, 49b be configured in described electromagnet assembly 40 be pressed into the direction opposition side, so can not become the obstruction of assembling operation, can further easily carry out assembling operation.

According to present embodiment, owing to all inner structure parts can be assembled into the pedestal 10 from the left and right sides, so there is assembling operation to oversimplify, automatic easily advantage of assembling.

Shell 60 has the box shape that can cooperate with described pedestal 10.Therefore, by after being assembled into inside component parts such as electromagnet assembly 40 in the described pedestal 10, described shell 60 is cooperated with described pedestal 10, and carry out closed operation, and finish assembling operation.

The action of the electromagnetic relay of present embodiment then is described.

Coil 45 is not being applied under the voltage condition, but moving contact 27 leaves fixed contact 22 owing to the elastic force of moving contacting plate 26, described card 30 is pushed to the top simultaneously, so the vertical component effect 51 of movable iron 50 leaves the magnetic pole piece 45a of iron core 45.

Then, when described coil 44 was applied voltage, the vertical component effect 51a of movable iron 50 attracted on the magnetic pole piece 45a of iron core 45, and described movable iron 50 is rotated.Therefore because the horizontal part 52 of movable iron 50 depresses pushing with protuberance 32 of described card 30, so be that fulcrum rotates by described card 30 with axial region 31, but described card 30 push the free end 28 of depressing moving contacting plate 26 with projection 33.Its result, but the moving contact 27 of described moving contacting plate 26 contacts fixed contacts 22 and is closed into the loop.

Then, when stopping that described coil 44 applied voltage, but described moving contacting plate 26 is pressed card lifting 30 by the elastic force of himself, and movable iron 50 is rotated, and moving contact 27 leaves fixed contact 22 simultaneously, resets to original state.

The invention is not restricted to described execution mode, can certainly be applied to the electromagnetic relay of other execution mode.

Claims

1. electromagnetic relay, the pars intermedia of the rectangular pedestal cross section insulation spaced walls of " コ " shape roughly that is provided with lateral openings roughly on the plane, be spaced apart spatial portion and superjacent air space portion below long side, rightabout side difference opening, comprise simultaneously with lower member:

Pedestal is provided with the handle hole that spatial portion below described and described superjacent air space portion are communicated with in described insulation with the upper surface of spaced walls;

Contact mechanism portion is arranged in the spatial portion of described below;

Card is mounted pivotably under described handle hole, and drives described contact mechanism portion;

Electromagnet assembly has winding around on the cylindrical portion of spool of convex shoulder, and iron core is pressed in the centre bore of described cylindrical portion at two ends; And

The movable iron of " L " shape roughly, be supported in rotationally on the described electromagnet assembly, and be positioned at described handle hole directly over, operate described card by the described movable iron of rotating from described handle hole, and drive described contact mechanism portion with the described card that rotates according to excitation, the demagnetization of described electromagnet assembly;

Wherein, described electromagnet assembly slip into from side direction along short side direction the superjacent air space portion of described pedestal and be pressed into, fixing.

2. electromagnetic relay as claimed in claim 1, wherein,

The not integrally formed coil terminals maintaining part in side marginal portion at the equidirectional of the convex shoulder of spool, this coil terminals lower surface coplanar of maintaining part bottom and pedestal, and the lateral surface coplanar of lateral surface and pedestal is connected simultaneously the lateral surface of described coil terminals usefulness maintaining part on the medial surface of the box-shaped enclosure that cooperates with described pedestal.