CN1380670A

CN1380670A - Electromagnetic relay and moving armature of its electromagnetic circuit can have three kinds of stable equilibrium positions

Info

Publication number: CN1380670A
Application number: CN02106154.8A
Authority: CN
Inventors: 斯特凡娜·巴伊; 达米安·布尔丹; 蒂埃里·孔布尔奥; 贝尔纳·勒克莱尔; 布律诺·斯皮内尔
Original assignee: Switch Design & Manufacturing
Current assignee: Switch Design & Manufacturing
Priority date: 2001-04-06
Filing date: 2002-04-05
Publication date: 2002-11-20
Anticipated expiration: 2022-04-05
Also published as: EP1248278B1; PL353196A1; ATE307385T1; FR2823371A1; EP1248278A1; PL200461B1; FR2823371B1; DE60206682D1; DE60206682T2; ES2248495T3; CN1249759C

Abstract

The electromagnetic relay has an electromagnetic circuit (5) with a fixed armature (6) and a moving armature (7). The armature can take up two stable positions, a working position and a stand-by position. The armature is close to the fixed armature and the electromagnetic circuit is closed, when the armature is at a working position; the armature separates from the fixed armature and the electromagnetic circuit is open,when the armature is at a stand-by postion.The moving armature can occupy a third stable equilibrium position away from the stable rest position and over the stand-by position.

Description

Electromagnetic relay, the moving armature of its electromagnetic circuit can have three kinds of kinds of stable equilibrium positions

Technical field

The present invention relates to an electromagnetic relay that comprises an electromagnetic circuit, described electromagnetic circuit comprises a fixed armature and a moving armature, described moving armature can occupy two kinds of stable equilibrium positions, i.e. a service position and a position of readiness, in the time of on the service position, it is pasting fixed armature, the closed electromagnetic loop, in the time of on the position of readiness, it separates with fixed armature, disconnects electromagnetic circuit.

Background technology

This electromagnetic relay was once described among the file FR-A-2620264.

But there are many defectives in the sort of relay, such as, armature one installs, and just is difficult to enter in the gap between the armature.And some dust that should not have of possibility in the gap, they can change the gap, hinder the good operation of relay.

Summary of the invention

The objective of the invention is to by proposing a kind of simplicity of design, dependable performance, accurately and long electromagnetic relay of life-span, to solve especially above-mentioned defective.

For this reason, the present invention proposes the electromagnetic relay mentioned in a kind of foreword, it is characterized in that moving armature can occupy a three-stable state equilbrium position, and on this position, it can leave fixed armature and cross described position of readiness.

Therefore, can freely enter in the gap between the armature, even armature installs.Like this, just can clean relay, especially armature need not to clean after the dismounting again.

Like this, can stop any dust that should not have in the gap fully, and can keep for a long time.

Relay safe, reach the useful life performance accurately and fast and greatly increase.

Electromagnetic relay according to the present invention also has other to optimize feature, and they are nonrestrictive, can separately or combine, as:

-it comprises that one is fixed on the plate on the fixed armature, moving armature is rotatably installed with respect to it;

-described moving armature is pulled to position of readiness by a return spring, and this return spring is fixed on the described moving armature on the one hand, is fixed on the other hand on the described plate;

-described plate has a bearing-surface, and under the effect of return spring, a chamfered portion of moving armature can act on this bearing-surface, and described chamfered portion forms the single-revolution axle of moving armature.

According to further feature:

-described plate comprises one from fixed armature groove far away, may be received in the moving armature on the three-stable state equilbrium position;

-on its 3rd position of readiness, moving armature is maintained in the described groove under the effect of return spring;

-moving armature has a shoulder block, and under the effect of return spring, this shoulder block can be close to a bearing-surface of described groove, and described shoulder block is different from described chamfered portion;

-moving armature has a through hole that is used for fixing spring, and its feature also is between this hole and described shoulder block a cantilever is arranged.

Therefore, moving armature with stable, accurately, the mode easily returned is on the 3rd position.

Again according to further feature:

-described plate has a pawl, this pawl exceeds armature, and the surface of the described bearing-surface of a formation is arranged, and the described chamfered portion of moving armature can act on described bearing-surface, this pawl surpasses described armature and extends an elbow extension, and this extension is for forming the hook-type of described groove;

-described plate comprises identical two pawls, and they are around moving armature, and the part of fixing spring of armature can move freely between two pawls;

-described moving armature is the yoke form;

-described fixed armature is a U-shaped, comprises first, second arm that links up by a base portion, and described plate is fixed on described second arm;

-relay has a shell, is placed with electromagnetic circuit in the shell, and described shell has a base with cover, and fixed armature leans against on this base;

-fixed armature is fixed on the described shell, and its base portion fixes to clamp between base and lid.

Description of drawings

Other features and advantages of the present invention will be below, with reference to accompanying drawing, is that example is described with a non-limiting example, in the accompanying drawing:

-Fig. 1 is the perspective view according to an electromagnetic relay of the present invention;

-Fig. 2 is the vertical orthogonal view along section II-II among Fig. 1;

-Fig. 3 is the horizontal orthogonal view of part along the part of the line IIIa-IIIa among Fig. 2 IIIb-IIIb along the line;

-Fig. 4 is the planar elevation view of the electromagnetic relay among above each figure, and the electromagnetic relay shown in this figure is lid not, and its moving armature is on first kinds of stable equilibrium positions;

-Fig. 5 and Fig. 4 are similar, but moving armature is on second kinds of stable equilibrium positions;

-Fig. 6 and Fig. 4,5 similar, but moving armature is on the three-stable state equilbrium position;

-Fig. 7 is the vertical view of electromagnetic relay shown in Figure 6;

-Fig. 8 is the vertical orthogonal view along the line VIII-VIII among Fig. 7;

-Fig. 9 is the perspective view of electromagnetic relay shown in above each figure, and this relay is on the position of Fig. 4, but the winding of its base, lid and coil has all omitted;

-Figure 10 is that electromagnetic relay among Fig. 9 is at the perspective view at another visual angle;

-Figure 11 is the vertical view according to the moving armature of a relay of the present invention;

-Figure 12 is vertical orthogonal view of moving armature among Figure 11;

-Figure 13 is the perspective view according to a guide member of the moving armature of an electromagnetic relay of the present invention;

-Figure 14 is vertical orthogonal view of guide among Figure 13;

-Figure 15 is the vertical view of guide among Figure 13;

-Figure 16 is the vertical orthogonal view according to the fixed armature of an electromagnetic relay of the present invention;

-Fig. 17 is the horizontal orthogonal view of fixed armature among Figure 16;

-Figure 18 is the perspective view of electromagnetic relay base shown in Fig. 1 to Fig. 8;

-Figure 19 is the vertical view of base among Figure 18;

-Figure 20 is the vertical orthogonal view along base shown in the Figure 18,19 of the line XX-XX among Figure 19;

-Figure 21 is for illustrating vertical orthogonal view of the lid of electromagnetic relay among Fig. 2 separately;

-Figure 22 is the vertical orthogonal view according to the bobbin of electromagnetic relay of the present invention;

-Figure 23 is the upward view of bobbin among Figure 22;

-Figure 24 is vertical orthogonal view of the coil along Fig. 1 of Fig. 7 center line XXIV-XXIV to electromagnetic relay shown in Figure 8;

-Figure 25 is the plane graph that is used for implementing a latch of Figure 24 coil.

Embodiment

Fig. 1 to 3 shows a high sensitive electromagnetic relay 1 that is used for circuit breaker or trip free relay, described electromagnetic relay is in fixing the covering the shell that 4 base 3 constitutes and 2 li an electromagnetic circuit 5 is arranged by being covered with of its supposition, this electromagnetic circuit comprises that a U-shaped fixed armature 6 and is called the moving armature 7 of yoke, described fixed armature 6 is fixed on the shell 2, and described moving armature 7 is rotatable to disconnect or closed electromagnetic loop 5.

Fig. 1 to 3 also shows a direction sign that is made of three right angle orientation, that is:

-one longitudinal direction L of extremely relative front portion from the rear portion;

-one horizontal direction T; And

-from one " low " or D score position to relative " height " or " on " the short transverse E of position;

Consideration for convenience, relay 1 is described with respect to this direction sign according to the determined orientation of Fig. 2, and this is corresponding to the modal purposes of relay.

Hereinafter, all with reference to the direction that just defined use vocabulary " preceding ", " back ", " low ", " height ", D score, " on ".

Fixed armature 6 and yoke 7 all adopt ferrimagnet such as iron-nickel alloy to implement.

Fixed armature 6 comprises promptly so-called preceding armature arm 8 of a first arm and the promptly so-called back of one second arm armature arm 9, and they link up by the base portion 10 that rests on shell 2 bases 3.

Electromagnetic circuit 5 comprises a coil 11, and this coil has a bobbin 12, and winding 13 twines on it, bobbin 12 on the preceding armature arm 8 of fixed armature 6 and base 3 fuse.

Alnico magnets 14 have been assigned between the

arm

8,9, so that fixed armature 6 carries out magnetic polarization.Magnet 14 1 ends of parallelepiped shape preferably are fixed by welding in above the base portion 10 of fixed armature 6.Say that exactly magnet 14 is fixed on the end face of base portion 10, this base portion also has an opposed bottom surface 16.

Yoke 7 can occupy at least two kinds of stable equilibrium positions, i.e. work or on-position and a standby or open position are on the service position, described yoke is close to the

arm

8,9 of fixed armature 6, and closed electromagnetic loop 5 is in the time of on the position of readiness, it separates with fixed armature 6, disconnects electromagnetic circuit 5.

Yoke 7 is withdrawn into its open position by return spring 17.

When coil 11 during not by excitation, yoke 7 maintains on the make position by the effect that the gravitation of alnico magnets 14 overcomes its return spring 17.

After coil 11 excitations, yoke 7 is discharged under the effect of magnet 14, so yoke rotates towards its open position under the effect of return spring 17.

Yoke 7 has two relative parallel planes, i.e. end face 18 and bottom surface 19.

Armature arm

8 and 9

free end

20,22 separately in front and back forms the roughly pole-face in same polar plane P, cooperates with described pole-face on make position in the bottom surface 19 of yoke 7.

Yoke 7 is the graip shape, and it has a cuboid 22, is protruding with the

flank

23,24 of two palintropes, and the trailing edge 25 of flank is the inclined-plane, is formed for the sword 26 of the expansion bearing of yoke 7.

Each sword 26 all has up an inclined-plane 27, its down lowest part be a seamed edge 28, this seamed edge is roughly in the plane of yoke 7 bottom surfaces 19.The seamed edge 28 common rotating shaft A that form yoke 7.

On the back armature arm 9 that the back 30 relative with, a front 29 arranged, by clamping or other any similar means, fixing the guide plate 31 of yoke 7, described yoke is installed with respect to plate 31 rotations.

This plate 31 is such as being the single piece that a metal material is implemented, and its limit is firm.It has a body 32 that is close on armature arm 9 back 30, back, and this body 32 roughly covers this back 30.This body 32 is a fork-shaped, extends up by identical two

pawls

33,34, exceeds fixed armature 6, protrudes from polar plane P, and is relative with two

flanks

23,24 of yoke 7, and sword 26 is applied to it.

Specifically, bearing-surface 35 before each

pawl

33,34 all has, under the effect of spring 17, in the time of on make position, the seamed edge 28 of sword 26 is against described bearing-surface (as Fig. 4).

On open position, yoke 7 is by its body 22, with back armature arm 9 linearly shape contact, the bottom surface 19 of yoke 7 leans against on the trailing edge 36 of free end 21 of back armature arm 9 (as Fig. 5).

In addition, yoke 7 is big than back armature arm 9 of the horizontal expansion scope at two flanks, 23,24 places, and sword 26 eternal and back armature arm 9 side direction are separated.

Sword 26 will not touch back armature arm 9, and in the time may wearing and tearing, they will not produce any particulate that may be attached on the pole-

face

20,21.

Therefore, the gap between yoke 7 and the fixed armature 6 is roughly constant.Therefore the efficient of relay 1, speed and useful life increase.

Yoke 7 has an afterbody 37 backwards, this afterbody extend beyond

flank

23,24, described afterbody can move freely between ground between the

pawl

33 and 34 of plate 31, the also anchoring on it of a top 38 of return spring 17.

This top 38 of return spring 17 forms a ring, and this ring inserts 39 li of handle 37 interior through holes, and this through hole surpasses knuckle 28 backward, to form a cantilever, so that the axle A rotation that yoke 7 forms around seamed edge 28 under the effect of spring 17.

The down end of plate 31 is the end pawl 40 of a back folding, and another bottom 41 of return spring 17 just is anchored at wherein.

Top pawl

33,34 extends upward by an elbow extension 42 respectively, and the hook that this elbow extension forms has been determined the groove 43 of receivability yoke 7.

Hook 42 has a wedged bottom 44 backwards, and a bending 46 is arranged up, and described wedged bottom 44 fuses by the part 45 and the

pawl

33,34 of the back folding of meeting at right angles with respect to

pawl

33,34, and described crooked 46 with respect to the end 44 preceding folding that meets at right angles.

The bearing-surface 47 that the end 44 has one forward, makes progress, and crooked 46 have one towards fixed armature 6, promptly forward, bearing-surface down 48.

Yoke 7 can occupy the three-stable state equilbrium position of so-called lifting, on this position, yoke tilt and fixed armature 6 separately, leave position of readiness, on this position, yoke be received within 43 li of grooves and and hook cooperation (as Fig. 6,7,8).

The afterbody 37 of yoke 7 has an end 49 backward, its horizontal expansion scope reduction, and this reduction is limited by two sides recessed 50,51 forward and forms.Described side spill becomes shoulder block.

On the lifting position of yoke, these shoulder blocks 51,52 are against on the bearing-surface 47 at the end 44 of hook 42, and described end 49 is inserted at the relative end 44 of

hook

42, and 18 of the end faces of yoke 7 are attached on the bearing-surface 48 of bending 46 of hook 42.

On this lifting position, 6 liang of arms of yoke 7 and fixed

armature

8,9 have all separated, shown in Fig. 6,8.

Yoke 7 can, for example under the effect of an automatic grip device (not shown), shift to the lifting position from its open position.Described grip device grasping plays the yoke 7 on the open position, and the pulling spring is placed on yoke 7 on the lifting position of cooperating mutually with groove 43.

Conversely, yoke 7 can be by an identical automatic grip device, is put back into open position-or directly be put on the on-position from the lifting position, and described grip device is caught yoke 7, and pulling spring 17 leaves groove 43, puts it on the fixed armature 6.

Form a cantilever between the trailing edge in the hole 39 of shoulder block 50,51 and supporting return spring 17, so that the effect of spring enough makes yoke 7 keep homeostasis on the lifting position.

In addition, for increasing the stability of this balance, spring 17 slightly recedes from top to bottom.

On this position, can enter in the electromagnetic circuit and clean, dust on the bottom surface 19 of the pole-

face

20,21 of

need removing arm

8,9 and yoke 7 because dust may hinder the later good operation of relay, especially can change the gap between yoke 7 and the fixed armature 6 especially.

This cleaning is especially carried out when relay 1 is installed, and can pass through ultrasonic wave, sprinkling, particularly sprays refrigerant such as carbon-dioxide flow, or other any roughly the same way well known by persons skilled in the art, implements.

Note that on this lifting position, sword 26 is freely, it and hook 42 keep certain distance, to prevent any collision (as Fig. 6) that damages sword.

The back folding part of hook 42 divides 45 an inner recess 52 is all arranged, when yoke 7 when its open position is shifted to the lifting position, before not by 42 the end 44 of rising to the bait, yoke is walked around described recess.

In addition, for plate 31 being fixed on the armature arm 9 of back, all-in-one-piece snap fastener is arranged at plate 31 bottoms, is the form of two

arms

54,55 that protrude from body 32 in the bottom, their at right angles before folding, and around the back armature arm 9 of the base portion 10 of contiguous fixed armature 6.

For guaranteeing plate 31 in the short transverse transfixion,

arm

54,55 be arranged on the top between fixed armature 6 base portions 10 of two

transverse lugs

56,57 that protrude from the back armature arm in the middle of the back armature arm 9 and below.

In addition, each

arm

54,55 has a projection that projects upwards 53 near on the upper side edge of body 32, and this projection is under spring 17 acts on tension on the plate 31, supporting the bottom surface of

respective ledge

56,57, to eliminate the height gap that may occur between plate 31 and the fixed armature 9.

But

arm

54,55 elastic deflections, they all have an outstanding projection 58 inwardly.

At projection 58 places of two

arms

54,55, the cutting of a U-shaped or V-arrangement is arranged, it defines a tooth 59, and this tooth is outstanding to plate 31 bodies 32 from

arm

54,55, and relative with body 32 a backwards bearing-surface 60 is arranged.

Consider the rigidity of plate 31, its clamping and can implement automatically on the armature arm 9 of back by a special machine (not shown), this machine for example, can strut

arm

54,55 in advance, in order to avoid damage armature arm 9.

For plate 31 being firmly held on the armature arm 9 of back, plate body 32 have one by the cutting of a V-arrangement of 32 li of plate bodys forms on tooth 59 opposites and vertical with it tongue piece 61, when not having the external force loading, this tongue piece turns forward.

Tongue piece 61 has certain elasticity, and like this, when on clamped position, back armature arm 9 tightly is stuck between tooth 59 and the tongue piece 61.

Therefore, with respect to fixed armature, plate 31, the especially structure of

arm

54,55 are enough to by engaging plate 31 be fixedly secured on fixed armature 6.

The installation of relay 1 is described now.

Base 3 and lid 4 are two single piece that are molded into by synthetic material such as PVC, polypropylene, polyformaldehyde or similar material respectively.

Base 3 comprises a diapire 62, and the two

lateral walls

63,64 of setting is placed electromagnetic circuit 5 on the diapire, and the tooth 65 on the two side outwards protrudes, and covers 4 to block.

Sidewall

63,64 extends forward and surpasses diapire 62, and there is the through hole 66 of a square-section base 3 fronts, and it extends to wall 64 from wall 63.

There is a crossbeam 67 in these 66 fronts, hole, and there is a dividing plate 68 back, and described crossbeam forms the front end of base 3, and described dividing plate separates itself and diapire 62.

In addition, base 3 has two pairs of identical projections 69,70, and they laterally relatively are arranged on each joint between base 3 and the sidewall 63,64.Each to projection all be included between

sidewall

63,64 and the diapire 62 the joint up, outstanding first projection 69 and second projection 70 inwardly.

The lateral dimension of first projection 69 of contiguous dividing plate 68 and elevation be big and little than second projection 70 respectively.

Each projection 69,70 is round inwardly, and projection 69,70 vertically defines the admittance district 71 of the base portion 10 of a fixed armature 6 together with diapire 62.

Diapire 62 and reception area 71 vertically have an elastic deformation area 72, and this district 72 is particularly suitable under pressure effect from top to bottom elasticity and sink.

Base 3 has a pin 73 in contiguous these 72 centers, deformed area, and this pin is protruding up from diapire 62, and it has a free end 74, and this free end forms with respect to the bearing-surface of deformed area 72 in the part.

For making diapire 62 elastically deformables,, be connected to a circle in the described district 72 here, in this circle, diapire 62 has vertex of a cone tapered cross-section down, and diapire 62 is from the circumferential center of circle of described circle, promptly perpendicular to pin 73, attenuation gradually.

Covering 4 is a hollow, is generally parallelogram shape, and it has on a roof 75, the limit is an antetheca 76, a rear wall 77 and two side 78,79, and they define an opening 80 down jointly, and described lid connects base 3 by this opening.

Near opening 80, each sidewall 78,79 all has two pairs of pawls 81, all has a window 82 in each pawl, and described window is used for and a tooth 65 of base 3 is cooperated, and covers 4 to block.

Be to help the crooked of pawl 81 and guiding lid when cover at card, each sidewall 78,79 all has a recess 83 between pawl 81, this recess be used for and each

sidewall

63,64 of base 3 on an outwards outstanding complementary chimb 84 cooperate.

In addition, lid 4 each sidewall 78,79 have an inner surface 85, one interior fins 86 along this inner surface, extend to opening 80 from roof 75.Described rib 86 has one from the outstanding bottom 87 of recess 83 downwards, and it is the end of to be the surface 88 of a formation shoulder block.

When relay 1 is installed, fixed armature 6 is placed on the base 3, it is middle that armature base portion 10 is injected projection 69,70, be placed on 71 li of reception areas thus, described projection is around deformed area 72, and form pin, with the vertical and lateral deviation that may occur of restriction fixed armature 6, the restriction of lateral deviation also can be implemented by

sidewall

63,64.

The bottom surface 16 of described base portion leans against on the pin 73 and its bearing-surface 74 contacts, and the area of this bearing-surface depends on the size of deformed area 72, with concentrated stress.

Lid 4 is stuck on the base 3, and the shoulder block 88 of rib 86 is relative with deformed area 72, and like this, because the structure and the size of the base portion 10 of base 3, lid 4 and fixed armature 6, the active force that makes described shoulder block 88 overcome deformed area 72 is against on the end face 15 of base portion 10.

So base portion 10 is tightened, supports and be fixed between pin 73 and the rib 86 in short transverse, deformed area 72 pushes cover base portion 10 to 4 under the effect of himself elastic force.

Under the effect of end face 15 applied pressures of the base portion 10 of 86 pairs of fixed armatures 6 of rib, base portion 10 leans against on the pin 73, this sink deformed area 72, again because the elastic force of deformed area self, can eliminate base portion 10, the base 3 of fixed armature 6 and cover the gap that may occur between 4, fixed armature 6 is located exactly with respect to shell 2.

In addition, on the antetheca 76 and rear wall 77 of lid 4, the perforation or the hollow fixed ear base 89,90 of two ear shapes arranged, they can guarantee relay 1 is fixed on can be by on the differential protector (not shown) of the bistable state that relay 1 starts.

For this reason, relay 1 comprises a driving mechanism 119, this mechanism have one with the yoke body 22 vertical reeves cover the button 114 of 115 li of the through holes of 4 roofs 75.

Button 114 comprises a upper end 116 and a bottom 117, outwards protrude from roof 75 described upper end, can cooperate mutually with differential protector, protrude inwardly from this wall 75 described bottom, and its tail end forms or has the snaphead 118 that can cooperate mutually with yoke body 22.

The operation of relay 1 is once now simply described.

Suppose yoke 7 on on-position, button 114 on what is called is sunk the position, that is, and against yoke body 22 118 from wall 75 (as Fig. 2,3) far away.

When electric current flow through coil 13, induced field can disturb the magnetic field of permanent magnet 14.This interference has discharged yoke 7, and this yoke to its open position rotation, promptly is with button 114 to so-called lifting position (as Fig. 5) under the effect of spring 17, and on this lifting position, differential protector is triggered in upper end 116.

Under the effect that puts on the mechanical stress from top to bottom of one on the upper end 116, button 114 forces yoke 7 to occupy its on-position, gets back on its sagging position.

Need to understand that button 114 depends on the accuracy of the action of relay 1 on open position and on-position with respect to the accuracy of the location of shell 2.

On on-position, armature 6,7 is depended in the location of short transverse in the short transverse position of button 114, considers that promptly yoke 7 between button 114 and fixed armature 6, depends on the location of fixed armature 6 with respect to shell 2.As mentioned above, if this accurate positioning, button 114 can be guaranteed with respect to the accuracy of shell 2 location.

Coil 11 and bobbin 12 are now described.

Bobbin 12 comprises an end ring flange 91 and a top ring flange 92 that limits winding 13, and they connect together by the hollow core 93 on the armature arm 8 before being enclosed within, and the through hole 94 that has a shape and hollow core to match.

Bobbin 12 also has the footing 95 of a square-section, and is outstanding downwards from end ring flange 91.Bobbin 12 pierces into the hole by its footing 95 and is assemblied on the base 3 for 66 li.The relative size of determining footing 95 and hole 66 will make: 94 li of footing 95 1 inserting holes, and it just is clamped in the described hole, and like this, bobbin 12 1 installs, and just is bearing in securely on the position of predetermined fixed.

Coil 13 can directly link to each other with a circuit (not shown) such as electronic cards, but, according to a most preferred embodiment of the present invention, footing 95 has two through hole 96, all be inserted with a metal bolt (picot) 97 in each through hole, this latch has one to protrude bottom 98, is used for connecting circuit, it also has one to protrude top 99, is used for for example by being welded to connect winding wire 13.

Before latch 97 installed on the bobbin 12, it roughly was J-shaped, and the lateral dimension of its bottom 98 is than big (as the Figure 25) at top 99.

Near each latch 97 middle part, i.e. there is a recess 100 that forms shoulder block joint between its bottom 98 and the top 99, and when latch 97 injected 96 li of the corresponding apertures of 95 li of footing, this shoulder block can lean against in the hole 96 on the lateral support surface 101.

For latch 97 being fixed on 95 li of footing, itself and bobbin 12 are fused, its top 99 is Z-shaped preceding folding.There is a contraction flow region 102 at top 99 from recess 100 at a distance, and when top 99 was crooked, this contraction flow region formed Z-shaped interlude, rests 103 li of the notch of adjacent bores 96 in end ring flange 91 end faces.

Therefore, latch 97 can not be in the short transverse translation.

The preceding armature arm 8 of fixed armature 6 has a relative front 104 and a back 105, and they link up by two sides 106,107.The through hole 94 of the core 93 of bobbin 12 also has two relative front 108 and the back of being linked up by

side

110 and 111 109.

Determine the size and the structure of base 3, fixed armature 6 and bobbin 12, make: these parts one assemble, and no matter from which face, between preceding armature arm 8 and the bobbin 12 gap are arranged all, that is:

The first gap J1 between the back 109 in the hole 94 of-preceding armature arm 8 fronts 104 and relative core 93;

The second gap J2 between the front 108 in the hole 94 of-preceding armature arm 8 back 105 and relative core 93;

Third space J3, the 4th gap J4 between relative each side 106,107 and 110,111 of-preceding armature arm 8 and core 93.

Here, each gap J1, J2, J3 and J4 are pre-determined by the shortest dimension chain on the composition surface that directly is connected and fixed armature 6, base 3 and bobbin 12, the end face that this dimension chain forms from the face 104,105,106,107 by the preceding armature arm 8 that limits described gap, the formation that arrives hole 94 limits the opposite face 108,109,110,111 of the other end of identical gap J1, J2, J3 and J4.

In addition, not relative face at ring flange, be between the end face 113 of the bottom surface 112 of end ring flange 91 and top ring flange 92, the size of the short transverse of bobbin 12 or height, select less than the short transverse size of preceding armature arm 8 or height, promptly separate the distance of the end face 15 and the pole-face 20 of base portion 10.

Therefore, when relay 1 is installed, footing 95 is according to 66 li of desired depth inserting holes, this desired depth is such, and on the one hand, preceding armature arm 8 exceeds top ring flange 92, the free end 20 of preceding armature arm 8 protrudes in the end face 113 of top ring flange 92, on the other hand, the bottom surface 112 of end ring flange 91 and the end face 15 of base portion 10 separate, so that there is gap J5 (as Fig. 2) between them.

Like this, bobbin 12 is installed securely with respect to shell, installs with respect to fixed armature 6 floating grounds simultaneously, promptly all separates with fixed armature on any point.Therefore fixed armature 6 has prevented bobbin 12 suffered stress and distortion, especially when latch (picot) 97 is installed on the foregoing circuit.

The present invention not only is confined to the above embodiment that is described for example.

Claims

1. electromagnetic relay, comprise an electromagnetic circuit (5), described electromagnetic circuit comprises a fixed armature (6) and a moving armature (7), described moving armature can occupy two kinds of stable equilibrium positions, i.e. a service position and a position of readiness, on the service position, it is pasting fixed armature (6), closed electromagnetic loop (5), in the time of on position of readiness, it separates with fixed armature (6), disconnects electromagnetic circuit (5), and its feature also is, moving armature (7) can occupy the three-stable state equilbrium position, on this position, it leaves fixed armature, and crosses described position of readiness.

2. electromagnetic relay according to claim 1 is characterized in that, it comprises that one is fixed on the plate (31) on the fixed armature (6), and moving armature (7) is rotatably installed with respect to it.

3. electromagnetic relay according to claim 2, it is characterized in that, described moving armature (7) is pulled to position of readiness by a return spring (17), and this return spring (17) is fixed on the described moving armature (7) on the one hand, is fixed on the other hand on the described plate (31).

4. according to claim 2 or 3 described electromagnetic relays, it is characterized in that, described plate (31) has a bearing-surface (35), under the effect of return spring (17), one chamfered portion (26) of moving armature (7) can lean against on this bearing-surface, and described chamfered portion (26) forms the single-revolution axle (A) of moving armature (7).

5. electromagnetic relay according to claim 4 is characterized in that, plate (31) comprises one from fixed armature (6) groove (43) far away, and its receivability is in the moving armature (7) on the three-stable state equilbrium position.

6. electromagnetic relay according to claim 5 is characterized in that, on the 3rd position of readiness, moving armature (7) is maintained at described groove (43) lining under the effect of return spring (17).

7. electromagnetic relay according to claim 6, it is characterized in that, moving armature (7) has a shoulder block (50,51), under the effect of return spring, described shoulder block can be close on the bearing-surface (47) of described groove (43), and described shoulder block (50,51) is different from described chamfered portion (26).

8. electromagnetic relay according to claim 7 is characterized in that, described moving armature (7) has a through hole (39) that is used for fixing spring (17), and its feature also is between this hole (39) and described shoulder block (50,51) cantilever is arranged.

9. according to one of them described electromagnetic relay of claim 5 to 8, it is characterized in that, described plate (31) has a pawl (33,34), this pawl exceeds fixed armature (6), the surface that the one described bearing-surface of formation (35) is arranged, the described chamfered portion (26) of moving armature (7) can be attached on the described bearing-surface, and this pawl (33,34) extends an elbow extension (42) that exceeds described fixed armature (6), and this extension is for forming the hook-shaped of described groove (43).

10. electromagnetic relay according to claim 9 is characterized in that, plate (31) comprises identical two pawls (33,34), and they are round moving armature (7), and the part of wherein fixing return spring (17) can move freely between two pawls (33,34).

11., it is characterized in that moving armature (7) is the yoke form according to one of them described electromagnetic relay of claim 2 to 10.

12. according to one of them described electromagnetic relay of claim 2 to 11, it is characterized in that, fixed armature (6) is a U-shaped, comprises first, second armature arm (8,9) that links up by a base portion (10), and described plate (31) is fixed on described second armature arm (9).

13. electromagnetic relay according to claim 12 is characterized in that, it has a shell (2), is provided with described electromagnetic circuit (5) in the shell, and described shell (2) has one by covering the base (3) that (4) cover, and fixed armature (6) leans against on this base (3).

14. electromagnetic relay according to claim 13 is characterized in that, fixed armature (6) is fixed on the described shell (2), and its base portion (10) fixes to clamp between base (3) and lid (4).