CN102834891B

CN102834891B - Contact arrangement

Info

Publication number: CN102834891B
Application number: CN201180015356.7A
Authority: CN
Inventors: 榎木英树; 山本律; 福田纯久; 池田阳司; 尾崎良介
Original assignee: Panasonic Intellectual Property Management Co Ltd
Current assignee: Panasonic Intellectual Property Management Co Ltd
Priority date: 2010-03-25
Filing date: 2011-03-02
Publication date: 2016-12-14
Anticipated expiration: 2031-03-02

Abstract

Contact arrangement possesses: contact block, a pair with fixed contact fix terminal and movable contact is constituted, and this movable contact is set up in parallel a pair travelling contact separateing respectively with above-mentioned a pair fixed contact in one side；Drive block, drives above-mentioned movable contact, in order to above-mentioned travelling contact separate with above-mentioned fixed contact；Pair of permanent magnets, being set up in parallel on direction and the direction orthogonal with the contact separation direction between above-mentioned travelling contact and above-mentioned fixed contact at above-mentioned travelling contact, it is arranged relative to each other across above-mentioned contact block, each polarity in face relative to each other is identical.

Description

Contact arrangement

Technical field

The present invention relates to contact arrangement.

Background technology

Since Yi Wang, in being used for the contact arrangement of electromagnetic relay or switch, timer etc., there has been provided a kind of Possessing the device of magnetic blow-out structure, this magnetic blow-out structure utilizes the power of the permanent magnet configured near contact that contact carries out contact point From time produce arc current elongate, carry out arc extinguishing.

As possessing contact arrangement one example of above-mentioned magnetic blow-out structure, following apparatus has been it is known that this device such as Figure 27 Shown in, possess: contact block 8, a pair with fixed contact 811 fix terminal 81 and possess and a pair fixed contact 811 The movable contact 82 of a pair travelling contact 821 separateing respectively is constituted；Not shown drive block, drives movable contact 82； Permanent magnet 9, is configured near contact block 8 (for example, see patent documentation 1).

Movable contact 82 is formed as a generally rectangular tabular, is provided with a pair travelling contact 821 the most side by side.And And, by being made movable contact 82 move to fixing terminal 81 side by drive block, a pair travelling contact 821 is connected to a pair the most respectively On fixed contact 811.

It addition, the permanent magnet 9 side on the width of movable contact 82 and opposite side are respectively across contact block 8 Relatively configure.Here, press the fixed contact 811 of each across the pair of permanent magnets 9 that contact block 8 is relative and consolidate with this The contact pair of a travelling contact 821 that fixed juncture 811 separate, be configured at this contact near.It is to say, a pair forever Magnet 9 arranges 2 groups for a long time.

Pair of permanent magnets 9 is individually configured, in order to mutually relative to the polarity in face be heteropole.Such as, it is respectively arranged at The permanent magnet of the width side (upside of Figure 27) of movable contact 82 its side, N pole is relative with contact block arranges, respectively Its side, S pole of permanent magnet 9 of the width opposite side (downside of Figure 43) being configured at movable contact 82 is relative with contact block 8 next Arrange.It is to say, be configured at 2 permanent magnets 9 of the width side of movable contact 82, it is relative with movable contact 9 The polarity in face is the most identical, for 2 movable contacts 82 being configured at width opposite side, then with movable contact 82 phase To the polarity in face the most identical.Therefore, the magnetic field in contact portion is enhanced.

And, from the length direction side of movable contact 82 toward opposite side (turning right from the left side of Figure 43) streaming current In the case of, connect the arc current produced when node pair contact separates and elongated in the direction away from each other.It is to say, movably The arc current that length direction side (left side in Figure 43) on contact 82 produces is elongated to above-mentioned side, at movable contact The arc current that length direction opposite side (right side in Figure 43) on 82 produces is elongated to above-mentioned opposite side.

But, in the case of the direction of electric current flowing becomes reversely (from right side toward left side) with above-mentioned direction, respectively connecing The arc current of upper generation is elongated by point in a direction close to each other.Therefore, flowing regenerative current etc. to contact arrangement During the most reverse electric current, exist each contact on contact and the probability that is short-circuited between the arc current that produces.

Therefore, people provide a kind of device, and this device as shown in figure 42, on the length direction of movable contact 82, is joined Put the relative pair of permanent magnets 9 across contact block 8.

As possessing contact arrangement one example of above-mentioned magnetic blow-out structure, the contact arrangement shown in Figure 41 or Figure 42 possesses: contact Block 8, is fixed what terminal 81 and possessing separate respectively with a pair fixed contact 811 by a pair with fixed contact 811 The movable contact 82 of a pair travelling contact 821 is constituted；Not shown drive block, drives movable contact 82；Permanent magnet 9, configuration Near contact block 8 (for example, see patent documentation 2,3).

It addition, the permanent magnet 9 side on the length direction of movable contact 82 and opposite side are respectively across contact block 8 Relatively configure.

Contact arrangement shown in patent documentation 2,3 in pair of permanent magnets 9 mutually relative to the polarity in face identical, and A contact to and another contact on, be formed at the magnetic flux distribution of surrounding for symmetry.And, no matter at movable contact 82 The electric current of middle flowing towards being certain direction of length direction on this movable contact 82, each contact on produce electric arc electricity Stream is all elongated in the direction away from each other.

Then, when travelling contact 821 separate with fixed contact 811, the arc current produced between contact Elongated by the magnetic field produced by pair of permanent magnets 9, carry out the disconnection of electric arc.

No. 3321963 publications of patent documentation 1 Japan Patent

Patent documentation 2 Japanese Unexamined Patent Publication 2004-71512 publication

Patent documentation 3 Japanese Unexamined Patent Publication 2008-226547 publication

But, for the contact arrangement shown in above-mentioned patent documentation 2, because configuration and the setting side by side of travelling contact 821 The each end face putting the movable contact 82 on direction distinguishes the most relative pair of permanent magnets 9, so existing in the above-mentioned side of being set up in parallel The upwards problem of contact arrangement maximization etc.

It addition, for the contact arrangement shown in above-mentioned patent documentation 2,3, because pair of permanent magnets 9 is arranged respectively at The length direction both end sides of contact block 9, so the magnetic gap between pair of permanent magnets 9 becomes big, the leakage magnetic flux produced because of this magnetic gap Increase.Therefore, it is more weak to elongate the power of electric arc produced between contact, exist cannot obtain that enough electric arc disconnects performance can Energy.

Here, as making electric arc disconnect the method that performance improves in above-mentioned contact arrangement, although it is contemplated that increase a pair The method of permanent magnet 9, but that in the case of, the outside dimension that there is the cost increase of permanent magnet 9 or contact arrangement is big The problem of type etc.

Summary of the invention

The present invention makes in view of the foregoing, its object is to, it is provided that a kind of can obtain stable electric arc break Open performance, and seek the contact arrangement of miniaturization.

In order to solve above-mentioned problem, the feature of the 1st invention is to possess: contact block, a pair with fixed contact fix Terminal and movable contact are constituted, and this movable contact is set up in parallel in one side and separate respectively with above-mentioned a pair fixed contact A pair travelling contact；Drive block, drives above-mentioned movable contact, in order to above-mentioned travelling contact contacts with above-mentioned fixed contact Separate；Pair of permanent magnets, being set up in parallel direction and connecing with above-mentioned travelling contact and above-mentioned fixing at above-mentioned travelling contact Separateing on orthogonal direction, direction between point, is mutually oppositely disposed across above-mentioned contact block, mutually relative to Each polarity in face is identical.

In order to solve above-mentioned problem, the feature of the 2nd invention is to possess: contact block, a pair with fixed contact fix Terminal and movable contact are constituted, and this movable contact is set up in parallel in one side and separate respectively with above-mentioned a pair fixed contact A pair travelling contact；Drive block, drives above-mentioned movable contact, in order to above-mentioned travelling contact contacts with above-mentioned fixed contact Separate；Pair of permanent magnets, mutually relatively sets across above-mentioned contact block being set up in parallel on direction of above-mentioned travelling contact Put, mutually relative to each polarity in face identical；3rd yoke, is configured between above-mentioned pair of permanent magnets.

As illustrated by upper surface, using the present invention, have and can provide following contact arrangement such effect, this connects Point device can obtain stable electric arc and disconnect performance, and sought miniaturization.

Accompanying drawing explanation

Fig. 1 represents the brief strabismus map of contact arrangement in embodiment of the present invention 1.

Fig. 2 represents contact arrangement major part enlarged drawing ibid.

Fig. 3 represents major part enlarged drawing when arranging three yokes in contact arrangement ibid.

Fig. 4 represents the major part enlarged drawing of contact arrangement different modes ibid.

Fig. 5 represents contact arrangement summary lateral view ibid.

Fig. 6 represents the electromagnetic relay sectional view of the contact arrangement possessed ibid.

Fig. 7 represents the electromagnetic relay outside drawing of the contact arrangement possessed ibid.

Fig. 8 represents the electromagnetic relay exploded perspective view of the contact arrangement possessed ibid.

Fig. 9 represents the electromagnetic relay main portion sectional view of the contact arrangement possessed ibid.

Figure 10 represents the major part enlarged drawing of contact arrangement in embodiment of the present invention 2.

Figure 11 represents the brief strabismus map of contact arrangement in embodiment of the present invention 3.

Figure 12 represents contact arrangement summary lateral view ibid.

Figure 13 represents the brief strabismus map of contact arrangement in embodiment of the present invention 4.

Figure 14 represents contact arrangement summary lateral view ibid.

Figure 15 represents the brief strabismus map of contact arrangement in embodiment of the present invention 5.

Figure 16 represents contact arrangement summary lateral view ibid.

Figure 17 represents the brief strabismus map of contact arrangement in embodiment of the present invention 6.

Figure 18 represents contact arrangement summary lateral view ibid.

Figure 19 represents the brief strabismus map of contact arrangement in embodiment of the present invention 7.

Figure 20 represents contact arrangement summary lateral view ibid.

Figure 21 represents the skeleton diagram of contact arrangement in embodiment of the present invention 8.

Figure 22 represents contact arrangement side cross-sectional view ibid.

Figure 23 represents contact arrangement major part enlarged drawing ibid.

Figure 24 represents the magnetic circuit skeleton diagram produced in contact arrangement ibid.

Figure 25 represents contact arrangement major part enlarged drawing ibid.

Figure 26 represents the major part enlarged drawing of contact arrangement in embodiment of the present invention 9.

Figure 27 represents the brief strabismus map of contact arrangement in the different example of the present invention 1.

Figure 28 represents contact arrangement major part enlarged drawing ibid.

Figure 29 represents major part enlarged drawing when arranging three yokes in contact arrangement ibid.

Figure 30 represents the electromagnetic relay sectional view of the contact arrangement possessed ibid.

Figure 31 represents the electromagnetic relay exploded perspective view of the contact arrangement possessed ibid.

Figure 32 represents the major part enlarged drawing of contact arrangement in the different example of the present invention 2.

Figure 33 represents the major part enlarged drawing in contact arrangement different modes ibid.

Figure 34 represents the brief strabismus map of contact arrangement in the different example of the present invention 3.

Figure 35 represents the brief strabismus map of contact arrangement in the different example of the present invention 4.

Figure 36 represents the brief strabismus map of contact arrangement in the different example of the present invention 5.

Figure 37 represents the brief strabismus map of contact arrangement in the different example of the present invention 6.

Figure 38 represents the skeleton diagram of contact arrangement in the different example of the present invention 7.

Figure 39 represents the skeleton diagram of contact arrangement in the different example of the present invention 8.

Figure 40 represents the major part enlarged drawing of contact arrangement in the different example of the present invention 9.

Figure 41 represents the sectional view of the 1st contact arrangement according to past case.

Figure 42 represents the sectional view of the 2nd contact arrangement according to past case.

Figure 43 represents the upper surface figure of the 3rd contact arrangement in past case.

Detailed description of the invention

Lower surface, illustrates embodiments of the present invention with reference to the accompanying drawings.

(embodiment 1)

For the contact arrangement of present embodiment, Fig. 1～3 is used to illustrate.Further, so that Fig. 1 to be up and down Benchmark, illustrates the direction orthogonal with direction up and down as fore-and-aft direction.

The contact arrangement of present embodiment includes: contact block 3, by have fixed contact 32 fixing terminal 33, have with Fixed contact 32 separate travelling contact 34 movable contact 35 and by movable contact 35 to fixed contact 32 side press Contact pressure spring 36 constitute；Drive mechanism, is made up of movable axis 5 and electromagnet block 2, and this movable axis 5 is movably inserted Lead to and be formed at the inserting hole 35b on above-mentioned movable contact 35, limit the movable contact 35 movement to fixed contact side 32, this electromagnetism Iron block 2 drives movable axis 5, in order to travelling contact 34 separate with fixed contact 32；Permanent magnet 46, is used in short-term The interior electric arc to producing on contact block 3 carries out arc extinguishing.

Movable contact 35 is formed as a generally rectangular tabular, and length direction (left and right directions) both end sides on an upper is divided Do not fix travelling contact 34, running through in substantial middle, inserting hole 35b is set.It addition, its lower surface of movable contact 35 is by contacting pressure Power spring 36 pushes.Here, a pair travelling contact 34 is arranged on the position that the distance away from inserting hole 35b is the most identical.

Movable axis 5 includes: axle portion 51, movably inserts the inserting hole 35b on movable contact 35；Rectangular-shaped abutting Portion 52, is arranged at the upper end of this axle 51, abuts with the upper surface of movable contact 35, limits movable contact 35 to fixed contact 32 side Movement.

Abutting part 52 is because using the magnetic material of soft iron etc. to be formed, so being provided simultaneously with the function of abutting part and yoke These both sides of function.Lower surface, is referred to as yoke abutting part 52 by abutting part 52.

Permanent magnet 46 forms approximately parallelepiped body shape, is arranged to the length direction for movable contact 35 almost parallel.This In, permanent magnet 46 at the front side of movable contact 35 and rear side, between fixed contact 32 and travelling contact 34 between Gap (contact clearance) and be mutually relatively respectively configured, relative pair of permanent magnets 46 its mutually relative to the polarity in face identical (being N pole in the present embodiment).It is to say, the permanent magnet 46 in front is set to, before be S pole and below for N pole, after The permanent magnet 46 of side is set to, before be N pole and below for S pole.

In the contact arrangement of present embodiment, if being moved upward movable axis 37 by electromagnet block 2, then for can The moving contact 35 restriction to fixed contact 32 side is released from, and movable contact 35 is exerted pressure by means of contact pressure spring 37, moves Move fixed contact 32 side.Whereby, travelling contact 34 is connected on fixed contact 32, makes to turn between contact.

Here, by pair of permanent magnets 46, as in figure 2 it is shown, formation magnetic field around contact block 3.Therefore, fixing The sense of current no matter electric arc produced (between contact) between contact 32 and travelling contact 34 flows in movable contact 35 is Which direction, is all elongated in the direction away from each other, carries out arc extinguishing.If describing in detail, it is simply that in fig. 2, electric current is movably When flowing from left to right in contact 35, the electric arc produced between the contact in left side is elongated to left back, between the contact on right side The electric arc produced is elongated to right back, is possible to prevent the short circuit of arc current.It addition, in fig. 2, electric current is at movable contact 35 In when flowing from right to left, the electric arc produced between the contact in left side is elongated to left front, produces between the contact on right side Electric arc is elongated to right front, is possible to prevent the short circuit of arc current.Further, the numbering 31 in Fig. 2 represents that following sealing is held Device 31.

It addition, being configured to of permanent magnet 46, its length L1 is more longer than distance L2 between a pair fixed contact 32, Jing Guoyi To permanent magnet 46 mutually relative to the Ge Mian center centrage X that intersect vertical with each permanent magnet 46 fixing connect by a pair Midpoint O between point 32.Therefore, around each contact in left and right, form the symmetrical magnetic being object axle with above-mentioned centrage X , the electric arc produced between each contact in left and right accepts equal power respectively from above-mentioned magnetic field and is elongated.It is thus possible to make left and right Contact on each contact consumes roughly equal, it is thus achieved that the switching performance of stable contact.

Furthermore, as it is shown on figure 3, can be relative with the length direction end face of movable contact 35, a pair permanent magnetic of connection is set 3rd yoke 47 of ferrum 46.3rd yoke 47 is by the basilar part 47a relative with the length direction end face of movable contact 35 and following A pair extended portion 47b is shaped generally as U-shaped, this pair extended portion 47b from the two ends of basilar part 47a for this Basilar part 47a the most vertically each extends over setting, and is connected respectively with pair of permanent magnets 46.Here, a pair extension sets The portion 47b of putting is connected on the face of side, S pole of pair of permanent magnets 46.It is to say, an extended portion 47b is connected to front Permanent magnet 46 before on, another extension 47b is connected on after the permanent magnet 46 at rear.

Accordingly, the magnetic flux produced from pair of permanent magnets 46 is attracted by the 3rd yoke 47, suppresses leakage magnetic flux, can improve Magnetic flux density near contact, the power elongating the electric arc produced between contact increases.Thus, because by arranging the 3rd yoke 47, even if the size reducing permanent magnet 46 can also maintain the power of elongating arc, it is possible to pilot arc disconnects performance, with Time also seek the miniaturization of contact arrangement, cost degradation.

It addition, as shown in Figure 4, the second yoke 52 is set between pair of permanent magnets 46, is configured to and this pair permanent magnetic Ferrum 46 is almost parallel, abuts with the upper surface of movable contact 35.It is to say, the second yoke 52 is configured at by pair of permanent magnets In 46 magnetic fluxs produced, a part for this magnetic flux is vertical incides the second yoke 52.Here, before yoke abutting part 52 and The most incident each magnetic flux is mutually exclusive in the substantial middle of the second yoke 52, from the left and right side of this second yoke 52 respectively Outgoing, advances towards the 3rd yoke 47 near contact portion.Thus, the magnetic flux near contact portion because of the second yoke 52 Increasing number, the power of elongating arc electric current increases, and electric arc can be made to disconnect performance and be improved.That is, it is possible to use the Two yokes 52, are directed effectively to the magnetic flux produced between pair of permanent magnets 46 near contact portion.

It addition, as shown in Fig. 5 (a), if flowed electric current, then at the conductor (contact 35) being typically nearby not provided with yoke Center with the center of conductor as magnetic field produces magnetic flux by concentric circles.To this end, in Fig. 5 (a), turn left from the right side in conductor Magnetic flux quantity and in conductor magnetic flux quantity from left to right roughly equal, the most do not produce electromagnetic force.

But, in the contact arrangement of present embodiment, when between contact conducting time, as shown in Fig. 5 (b), be subject to movably The impact of the yoke abutting part 52 that the upper surface of contact 35 is close, the balance quilt in the magnetic field produced around this movable contact 35 Break.If illustrating, it is simply that in Fig. 5 (b), the major part of the magnetic flux turned left from the right side is attracted by yoke abutting part 52, with as The situation that yoke as shown in Fig. 5 (a) is not disposed near movable contact 35 is compared, and turns left from the right side in movable contact 35 Magnetic flux quantity reduces.Lower surface, is referred to as the second yoke 52 by yoke abutting part 52.

On the other hand, in Fig. 5 (b), magnetic flux from left to right is all moved upward, as shown in Fig. 5 (a) The situation that yoke is not disposed near movable contact 35 is compared, and in movable contact 35, magnetic flux quantity from left to right increases.

Then, by movable contact 35 magnetic flux from left to right and to this movable contact 35 generation effect upward Electromagnetic force and the magnetic flux by turning left from the right side in movable contact 35 and electromagnetism down to this movable contact 35 generation effect It is big that power compares change, and on movable contact 35, electromagnetic force (captivation) upward works.It is to say, on movable contact 35, Almost parallel with the direction of displacement of this movable contact 35 (vertical upward) captivation to fixed contact side works.

Here, to the vertical captivation upward of movable contact 35 generation effect because and producing on movable contact 35 Raw bank of contacts repulsion (power down), is 180 degree of rightabout power, so becoming by this bank of contacts repulsion of most effective elimination The power that works of direction.Therefore, it can utilize above-mentioned captivation effectively to eliminate bank of contacts repulsion, it is possible to lower contact indirection point The decline of pressure.

Thus, the contact arrangement of present embodiment is owing to being provided with pair of permanent magnets 46, thus on each contact in left and right Contact consumption becomes roughly equal, furthermore, movable contact 35 is attracted by the second yoke 52 to fixed contact side, accordingly, and this enforcement When the contact arrangement of mode can make load short circuits, the dosis tolerata to electromagnetic repulsive force is improved, and is provided simultaneously with stable electric arc Disconnect performance, it is thus achieved that the switching performance of more stable contact.

It addition, in the present embodiment, the second yoke 52 has yoke and the function of abutting part both sides, and the second yoke 52 and axle portion 51 by global formation, constitute movable axis 5.It is thus possible to by by parts (movable axis 5) have yoke, Abutting part and the function in axle portion, reduce parts number of packages.

Further, in the present embodiment, although the second yoke 52 and axle portion 51 are one-body molded, but can also be by After the molding respectively of two yokes 52 and axle portion 51, in the second yoke 52, the chimeric axle portion 51 etc. that inserts forms as one.

And, the contact arrangement of above-mentioned present embodiment is such as used in that electromagnetic relay shown in Fig. 6.

Shown in above-mentioned electromagnetic relay such as Fig. 6 (a), (b), Fig. 7 (a), (b) and Fig. 8 (a)～(c), outside hollow box In shell 4, storage electromagnet block 2 and contact block 3 be combined into one constitute internal unit block 1, permanent magnet 46 and the 3rd Yoke 47.Lower surface, in Fig. 6 (a) up and down on the basis of, using the direction orthogonal with direction up and down as front and back To.

Electromagnet block 2 possesses: the bobbin 21 of hollow tube-shape, uses insulant to be formed, and winding installs excitation coiling 22； Coil terminals 23, is connected to the two ends of excitation coiling 22；Secured core 24, is fixed in the cylinder of bobbin 21, by logical Excitation coiling 22 after electricity magnetizes；Movable core 25, and axially opposing at bobbin 21 of secured core 24, be configured at line In the cylinder of coil 21, attracted by secured core 24, at axle in the cylinder of bobbin 21 according to the break-make of excitation coiling 22 energising To movement；Yoke 26, is made up of magnetic material, surrounds bobbin 21；Back-moving spring 27, is configured in the cylinder of bobbin 21, will Movable core 25 presses downwards.

It addition, contact block 3 possesses: seal container 31, insulant is used to be formed as the hollow box of lower surface opening；Gu Fixed end 33, is shaped generally as cylindric, the through upper surface being arranged at sealing container 31, arranges fixed contact at lower surface 32；Movable contact 35, has the travelling contact 34 separateing with fixed contact 32, is configured in sealing container 31；Contact pressure Power spring 36, abuts with the lower surface of movable contact 35, is pressed to fixed contact 33 side by movable contact 35.

Bobbin 21 uses resin material, is formed as defining the hollow cylinder of flange part 21a, 21b in upper end and lower end Shape, wrapped around excitation coiling 22 on the periphery of cylindrical portion 21c.And, the internal diameter of cylindrical portion 21c lower end side is interior with upper end side Footpath is compared and is expanded further.

Excitation coiling 22 is as shown in Fig. 8 (c), in the pair of terminal portion 121 on the flange part 21a being arranged at bobbin 21 Connecting end respectively, by the guide line 122 connected in portion of terminal 121, and a pair coil terminals 23 connects respectively.

Coil terminals 23 uses the conductive material of copper etc. to be formed, and by utilizing scolding tin etc. and guide line 122 to connect Basilar part 23a and being formed from the most vertical extended portion of terminal 23b of this basilar part 23a.

Yoke 26, as shown in Fig. 8 (b), including the first yoke plate 26A of substantially rectangular tabular, is configured at bobbin 21 Upper end side；Second yoke plate 26B of substantially rectangular tabular, is configured at the lower end side of bobbin 21；A pair the 3rd yoke 26c, from The two ends, left and right of the second yoke plate 26B are the most extended, are connected on the first yoke plate 26A.

And, the first yoke plate 26A upper surface side substantial middle formed recess 26a, this recess 26a substantially in Centre forms inserting hole 26c.And, in this inserting hole 26c, insert the circle of the bottomed cylindrical forming flange part 28a in upper end Cartridge unit 28, flange part 28a engages with recess 26a.Here, the lower end side in cylindrical portion 28b of cylinder part 28, configuration is adopted It is shaped generally as columned movable core 25 with magnetic material, and is inserted into using magnetic material to be formed in cylindrical portion 28b For generally cylindrical secured core 24, relative configuration secured core 24 and movable core 25.

It addition, at the upper surface of the first yoke plate 26A, be provided with block parts 45, this its edge part of block parts 45 is fixed On the first yoke plate 26A, being provided with the protuberance 45a forming following space in substantial middle, this space is fixing for being accommodated in The flange part 24a that the upper end of iron core 24 is formed；Utilize these block parts 45 to realize the anticreep of secured core 24.

And, the gap formed between the inner peripheral surface and the outer peripheral face of cylinder part 28 of bobbin 21 lower end side In, the chimeric cylindrical sleeve 26D being made up of magnetic material, together with yoke 26, secured core 24 and movable core 25, formed Magnetic circuit.

Back-moving spring 27 inserts the inserting hole 24b being upwardly formed by the axle of secured core 24, lower end and movable core 25 Lower surface abuts, and upper end is connected to the lower surface of block parts 45.Furthermore, back-moving spring 27 is arranged on movable ferrum with compressive state Between core 25 and block parts 45, it is used for pressing downwards movable core 25 with elasticity.

Movable axis 5 includes: axle portion 51, uses nonmagnetic substance to be formed as the elongated pole shape of above-below direction length；Flange shape Yoke abutting part 52, form as one in upper end and the axle portion 51 in this axle portion 51, be made up of magnetic material.

Inserting hole 45b that axle portion 51 is formed by the protuberance 45a substantial middle inserted at block parts 45 and back-moving spring 27, and screwed up in by the screwed hole 25a being axially formed of movable core 25 by the threaded portion 51a formed on bottom, Come and movable core 25 connects.

Abutting part 52 uses soft iron to be formed as a generally rectangular tabular, limits the movable contact 35 shifting to fixed contact side Dynamic.It is to say, abutting part 52 has function and the function of yoke limiting the abutting part that movable contact 35 moves.Further, under Abutting part 52 is referred to as the second yoke 52 by surface.

Movable contact 35 fixes travelling contact 34 in the left and right both end sides of the main part 35a being formed as a generally rectangular shape, Movable axis 5 is inserted in the inserting hole 35b that substantial middle is formed.

It is cylindric that fixing terminal 33 uses the conductive material of copper etc. to be shaped generally as, and forms flange part 33a in upper end, The fixing contact 32 that is relatively fixed with travelling contact 34 of lower surface.It addition, also from the upper surface of fixing terminal 33 axially through It is threaded hole 33b, by being screwed up in this screwed hole 33b by the threaded portion of not shown external loading etc., is attached.

Sealing container 31 uses the heat-resisting material of pottery etc. to be formed as the hollow box of lower surface opening, surface thereon It is set up in parallel by 2 through hole 31a of the above-mentioned fixing through setting of terminal 33.And, fixed contact terminal 33 is so that flange part 33a is arranged in through hole 31a from the state that the upper surface sealing container 31 is prominent is through, is engaged by soldering.It addition, such as Shown in Fig. 8 (a), sealing the edge of opening of container 31, engaged one end of bead 38 by soldering.And, bead 38 another One end and the first yoke plate 26A are engaged by soldering, seal container 31 with this airtight.

Furthermore, it is provided with insulating element 39 at the peristome sealing container 31, being used for will be at fixed contact 32 and travelling contact The electric arc produced between 34, from the junction surface insulation sealed between container 31 and bead 38.

Insulating element 39 uses the Ins. ulative material of pottery or synthetic resin etc. to be formed as the general hollow of upper surface open Rectangular-shaped, the protuberance of chimeric above-mentioned block parts 45 in the recess in the rectangle frame 39a that lower surface substantial middle is formed 45a.It addition, because the upper end side of insulating element 39 perisporium abuts with the inner face sealing container 31 perisporium, so connect from by fixing Point 32 and the contact portion of travelling contact 34 composition, sought the insulation at the junction surface being made up of sealing container 31 and lip portions 38.

Furthermore, the inner bottom surface substantial middle at insulating element 39 forms circular frame 39c, has and contact pressure spring 36 The internal diameter that internal diameter is in approximate same size；In the substantial middle of this circular frame 39c, form the inserting hole 39b inserted by movable axis 5. And, by being embedded in the bottom of the contact pressure spring 36 after being inserted by movable axis 5 at the recess of this circular frame 39c, come The position preventing contact pressure spring 36 offsets.

In addition, contact pressure spring 36 is abutted with the lower surface of movable contact 35, at insulating element 39 by upper end And arrange with compressive state between movable contact 35, and movable contact 35 is pressed with elasticity to fixed contact 32 side.

Permanent magnet 46 is shaped generally as rectangular-shaped, seal container 31 front face side and below side respectively with seal hold Device abuts and configures.Pair of permanent magnets 46 is arranged relatively by sealing container 31, mutually relative to the polarity in face identical (being N pole in the present embodiment).Here, pair of permanent magnets 46 by the fixed contact 32 sealed in container 31 and movably connects Point 34 between contact clearance and relative.

3rd yoke 47 by the basilar part 47a of substantially rectangular tabular and before and after this basilar part 47a two ends respectively for A pair the most extended for this basilar part 47a extended portion 47b, is shaped generally as U-shaped, and joins respectively It is placed in two, the left and right side sealing container 31.Basilar part 47a abuts with the left and right side sealing container 31 and arranges, a pair Extended portion 47b sandwiches permanent magnet 46 from fore-and-aft direction and seals container 31.It is to say, a pair extended portion 47b Within, an extended portion 47b is connected to before the permanent magnet 46 in front on (S pole-face), another extended portion 47b is connected to after the permanent magnet 46 at rear on (S pole-face).

Shell 4 uses resin material to be formed as a generally rectangular box like, by the housing main body of the hollow box of upper surface open 41 are constituted with covering the hollow box cover cap 42 being arranged on housing main body 41 opening.

Housing main body 41 is provided with the jut 141 defining inserting hole 141a, this inserting hole in the front end of left and right sidewall 141a uses when being fixed on installed surface by electromagnetic relay screw.It addition, at the upper end side opening of housing main body 41 Edge forms shoulder 41a, and periphery diminishes compared with lower end side.And, before above shoulder 41a is more past, formed by line Pair of slits 41b that portion of terminal 23b of circle terminal 23 embeds.Furthermore, after above shoulder 41a is more past, by right and left To being set up in parallel a pair recess 41c.

Cover cap 42 is formed as the hollow box of lower surface opening, forms a pair jut 42a below, with housing main body In the 41 recess 41c embedding housing main body 41 when assembling.It addition, at the upper surface of cover cap 42, formed upper surface big by left and right Cause to be divided into the separating part 42c of 2, the upper surface after being divided into 2 by this separating part 42c, formed respectively by fixing terminal The 33 a pair inserting hole 42b inserted.

And, as shown in Fig. 8 (c), when receiving the internal unit block being made up of electromagnet block 2 and contact block 3 in shell 4 When 1, the downside buffering of substantially rectangular shape is installed between the flange part 21b and the bottom surface of housing main body 41 of bobbin 21 lower end Rubber blanket 43, defines by inserting that the flange part 33a of fixing terminal 33 inserts between sealing to install between container 31 and cover cap 42 Upside buffer rubber gasket 44 after through hole 44a.

In above-mentioned electromagnetic relay, because back-moving spring 27 has spring constant more higher than contact pressure spring 36, So exerting pressure by means of back-moving spring 27, movable core 25 slides downwards, and movable axis 5 moves downwards the most together Dynamic.Whereby, because the movement of the abutting part 52 with movable axis 5, movable contact 35 moves downwards, so in original state Under the state that separates with travelling contact 34 and fixed contact 32 arrange.

And, if because excitation spiral 22 is energized, then movable core 25 is attracted by secured core 24 and slides upward, institute It is also carried out linkage with the movable axis 5 linked on movable core 25, is moved upward.Accordingly, because the abutting part 52 of movable axis 5 To fixed contact 32 side shifting, by means of exerting pressure of contact pressure spring 36, movable contact 35 is also to fixed contact 32 sidesway Dynamic, so the travelling contact 34 fixed on movable contact 35 is connected on fixed contact 32, make to turn between contact.

The electromagnetic relay being made up of said structure is because possessing above-mentioned contact arrangement, it is possible to possess stable contact Switching performance, and seek miniaturization, cost degradation.

It addition, in general, the size of the bobbin 21 that electromagnetic relay possesses according to electromagnet block 2, before and after determining The size in direction, the length side of the movable contact 35 that the size of left and right directions is set up in parallel along its length according to travelling contact 34 To (left and right directions) size, determine.

If describing in detail, it is simply that bobbin 21 is the cylinder type after upper and lower two ends form flange part 21a, 21b, shell 4 The inside dimension of fore-and-aft direction sets according to the profile of above-mentioned bobbin 21.Here, movable contact 35 is because fore-and-aft direction is wide Degree direction, if so seen from above, then bloats as electromagnet block 2 both sides, direction before and after movable contact 35.Namely Say, in the longitudinal direction, between the inwall of movable contact 35 and shell 4, there is dead band.

Thus, in the case of the left and right directions both sides of movable contact 35 configuration pair of permanent magnets 46, need further Increase the size of shell 4 left and right directions.But, for present embodiment, because both sides, direction before and after movable contact 35 It is configured with pair of permanent magnets 46, it is possible to effectively utilize the above-mentioned dead band in shell 4, it is possible to prevent the maximization of shell 4.

Here, when above-mentioned electromagnetic relay turns on when between contact, the second yoke 52 of movable axis 5 is close to movable contact 35 Upper surface.Then, as illustrated by Fig. 5 (b), the balance in the magnetic field produced around movable contact 35 is beaten Broken, on movable contact 35, and the almost parallel vertical captivation upward of the direction of displacement of this movable contact 35 works.

Thus, although in the case of contact indirection point repulsive force works, on movable contact 35, and bank of contacts repulsion Also work by 180 degree of rightabout captivations.Therefore, it can effectively eliminate bank of contacts repulsion, it is possible to prevent contact pressure The best situation of the contact deposition etc. declining or causing because of electric arc when contact leaves.

Furthermore, because the second yoke 52 is shaped generally as tabular, thus from the second yoke 52 with movable contact 35 phase To face on each point be respectively the most certain to the distance of movable contact 35, the suction worked on movable contact 35 can be made Gravitation becomes generally uniform.

If it addition, the energising of excitation spiral 22 is disconnected, then exerting pressure by means of back-moving spring 27, movable core 25 to Slid underneath, movable axis 5 moves the most downward the most together.Accordingly, because abutting part 52 moves downwards, movable contact 35 Move downwards, thus fixed contact 32 and travelling contact 34 separate, and are disconnected between contact.

Further, abutting part 52 is as it is shown in figure 9, abut with the inwall of shell 4 arrange because of its front end and rear end, so being In the case of making revolving force in the spring wind direction by contact pressure spring 36 etc., parts need not be set separately, also can Prevent from rotating.Here, in the present embodiment, although the front end of abutting part 52 and rear end abut on the inwall of shell 4, but A part for abutting part 52 can also be only had to abut with the inwall of shell 4, prevent the rotation of abutting part 52.

Further, in the present embodiment, abutting part 52 is because using soft iron to be formed, so conduct has abutting part and yoke The yoke abutting part of the function of both sides uses, but nonmagnetic substance can also be used to form abutting part 52, arranges magnetic separately Yoke.In the case of that, yoke to be arranged at the substantial middle fixing terminal 33 a pair, and the axle center pressing movable axis is the most relative Arrange.

It addition, the contact arrangement of present embodiment can also be sealed contact device.

(embodiment 2)

For the contact arrangement of present embodiment, Figure 10 is used to illustrate.Further, at the contact arrangement of present embodiment With in the contact arrangement of embodiment 1, the configuration of movable contact 35 and a pair only for pair of permanent magnets 46 are permanent The thickness of Magnet 46 is different, about the structure common with embodiment 1, then encloses general symbol, and the description thereof will be omitted.Further, Using in Figure 10 up and down as all around illustrating.Furthermore, it is set to currently touch movable in the explanation of lower surface Streaming current from left to right in 35, illustrates.

As shown in embodiment 1, the electric arc produced in the contact portion in left side is elongated to left back, The electric arc produced in the contact portion on right side is elongated (seeing the arrow in Figure 10) to right back.Here, in the present embodiment, Movable contact 35 is arranged adjacent to the permanent magnet 46 in front between pair of permanent magnets 46.It is to say, only will movably touch 35, the central mobile between pair of permanent magnets 46 obtains the permanent magnet 46 near front, the sky of movable contact 35 rear side Between just become roomy.

Thus, in the contact arrangement of present embodiment, in movable contact 35 flowing electric current towards in Fig. 10 For in the case of the right side, compared with embodiment 1, the distance of elongating arc can be extended, it is possible to make the electricity for forward current Arc disconnects performance and is improved.

It addition, in the present embodiment, the thickness phase of the thickness of the permanent magnet 46 in front and the permanent magnet 46 at rear Ratio is formed relatively thin.Therefore, the permanent magnet 46 at rear the intensity in the magnetic field of movable contact 35 rear side produced with by front The intensity in the magnetic field of movable contact 35 front side that the permanent magnet 46 of side produces is compared and is become stronger.Thus, by arc current The power elongated rearward becomes strong, electric arc can be made to disconnect performance and be further enhanced.

Further, in the present embodiment, although for being oriented towards right feelings of the electric current of flowing in movable contact 35 Shape is illustrated, but reversely also is able to be suitable in the case of (turning left from the right side) in being oriented of electric current.But, that situation Under, as long as the permanent magnet 46 that the movable contact 35 central authorities between pair of permanent magnets 46 are arranged close to rear, make rear The thickness of permanent magnet 46 thinner than the thickness of the permanent magnet 46 in front, it is possible to.

(embodiment 3)

For the contact arrangement of present embodiment, Figure 11 is used to illustrate.Further, at the contact arrangement of present embodiment With in the contact arrangement of embodiment 1, the only shape of the second yoke 53 of movable axis 5 is different, about and embodiment 1 common Structure, then enclose general symbol, the description thereof will be omitted.Further, in Figure 11 up and down on the basis of, will be with up and down Orthogonal direction, direction illustrates as fore-and-aft direction.

Second yoke 53 of present embodiment as shown in figure 11, by substantially rectangular flat basilar part 53a with from this base A pair extended portion 53b that before and after the 53a of bottom, two ends are the most extended, is formed as cross section substantially U-shaped.

And, when between contact during conducting, the lower surface of the basilar part 53a of abutting part 53 is close to the upper table of movable contact 35 Face, and a pair extended portion 53b is respectively close to front end and the rear end of movable contact 35.

Then, as shown in figure 12, by second yoke 53 close with the upper surface of movable contact 35, front end and rear end Impact, the balance in the magnetic field produced around this movable contact 35 is broken.If illustrating, it is simply that in fig. 12 movably The major part of the magnetic flux turned left from the right side in contact 35 is attracted by the second yoke 53.Therefore, with the tabular shown in above-mentioned Fig. 6 (b) The situation that second yoke 52 is arranged near movable contact 35 is compared, and the magnetic flux quantity turned left from the right side in movable contact 35 enters one Step reduces.

On the other hand, in fig. 12, in movable contact 35, magnetic flux from left to right is all moved upward, with above-mentioned figure Tabular the second yoke 52 shown in 6 (b) is arranged on the situation near movable contact 3 and compares, past from a left side in movable contact 35 Right magnetic flux quantity increases further.

Then, by movable contact 35 magnetic flux from left to right and to this movable contact 35 generation effect upward Electromagnetic force and the magnetic flux by turning left from the right side in movable contact 35 and electromagnetism down to this movable contact 35 generation effect Power is compared, and increases further.Therefore, on movable contact 35, and the direction of displacement of this movable contact 35 is almost parallel and bigger Vertical electromagnetic force (captivation) upward work.

Here, to the vertical captivation upward of movable contact 35 generation effect because and producing on movable contact 35 Bank of contacts repulsion (power down), is 180 degree of rightabout power, so becoming the side by this bank of contacts repulsion of most effective elimination To the power worked.Therefore, it can compared with embodiment 1, movable contact 35 produces bigger captivation upward, enters One step prevents the decline of contact indirection point pressure.

Thus, in the contact arrangement of present embodiment, by the second yoke 52, for movable contact 35, compare embodiment party The power (captivation) of the elimination bank of contacts repulsion that formula 1 is higher works.It is to say, the contact arrangement of present embodiment can make During load short circuits, the dosis tolerata to electromagnetic repulsive force is improved, and is provided simultaneously with stable electric arc and disconnects performance, it is thus achieved that be more steady The switching performance of fixed contact.Additionally, in the present embodiment, the second yoke 53 possesses yoke and the function of abutting part both sides, And the second yoke 53 and axle portion 51 form as one and constitute movable axis 5.It is thus possible to by by a parts (movable axis 5) there is yoke, abutting part and the function in axle portion, reduce parts number of packages.

It addition, abutting part 53 because a pair extended portion 53b all inwalls with shell 4 abut is arranged, even if so In the case of revolving force in the spring wind direction by contact pressure spring 36 etc., parts need not be set separately, also can prevent Spin-ended turn.Further, in the present embodiment, although a pair extended portion 53b is connected on the inwall of shell 4, but also Can be connected on the inwall of shell 4 with only one of which extended portion 53b, prevent the rotation of abutting part 53.

It addition, in the present embodiment, although the second yoke 53 and axle portion 51 are one-body molded, but can also be by After the molding respectively of two yokes 53 and axle portion 51, in the second yoke 53, the chimeric axle portion 51 etc. that inserts forms as one.

Further, in the present embodiment, abutting part 53 is because using soft iron to be formed, so conduct has abutting part and yoke The yoke abutting part of the function of both sides uses, but nonmagnetic substance can also be used to form abutting part 52, arranges magnetic separately Yoke.In the case of that, yoke to be arranged at the substantial middle fixing terminal 33 a pair, and the axle center pressing movable axis is the most relative Arrange.

(embodiment 4)

For the contact arrangement of present embodiment, Figure 13 is used to illustrate.But, about and embodiment 1 common Structure, then enclose general symbol, and the description thereof will be omitted.Further, in Figure 13 up and down on the basis of, will with up and down side Illustrate as fore-and-aft direction to orthogonal direction.

In the contact arrangement of the embodiment 1 shown in the contact arrangement of present embodiment and Fig. 1, difference is, can The lower surface of moving contact 35 is fixed relative with abutting part 52 across this movable contact 35, such as by the magnetic material structure of soft iron etc. The yoke plate 6 (lower surface is referred to as the first yoke 6) become.

In the contact arrangement of present embodiment, if making movable axis 5 carry out displacement upward, then by drive mechanism 2 Therewith accompany movable axis 5 the second yoke 52 displacement the most upward.Then, with the displacement upward of the second yoke 52, movably The restriction of contact 35 (fixed contact 32 side) upward is released from, and movable contact 35 is exerted pressure by means of contact pressure spring 36 Displacement upward.Then, it is connected on fixed contact 32 by travelling contact 34 set on movable contact 35, makes between contact Conducting.Now, the second yoke 52 keeps the position after displacement by drive mechanism 2, utilizes contact pressure spring 36, and remains to The movable contact 35 of top abuts or close.

It addition, because turning between contact, to movable contact 35 streaming current, so generation around this movable contact 35 Magnetic field, as shown in figure 14, is formed through the second yoke 52 and magnetic flux of the first yoke 6, the second yoke 52 and the first yoke 6 it Between produce the first magnetic attraction.

Then, by the first magnetic attraction worked between the second yoke 52 and the first yoke 6, the first yoke 6 quilt Second yoke 52 attracts.It is to say, on movable contact 35 after fixing the first yoke 6, and the displacement of this movable contact 35 The power upward in direction almost parallel (being pushed to fixed contact 32 side by movable contact 35) works.

Here, make movable contact 35 by work between the second yoke 52 and first yoke 6 of power upward the One magnetic attraction because and on movable contact 35 produce bank of contacts repulsion (power down), be substantially 180 degree rightabouts Power, so becoming the power worked by the direction of this bank of contacts repulsion of most effective elimination.Therefore, at the contact of present embodiment In device, can effectively eliminate bank of contacts repulsion by means of above-mentioned first magnetic attraction, it is possible to lower contact pressure between contact Decline.

Thus, when the contact arrangement of present embodiment can make load short circuits, the dosis tolerata to electromagnetic repulsive force is carried Height, is provided simultaneously with stable electric arc and disconnects performance, it is thus achieved that the switching performance of more stable contact.

It addition, in the present embodiment, the second yoke 52 has yoke and the function of abutting part both sides, and the second yoke 52 and axle portion 51 one-body molded, constitute movable axis 5.It is thus possible to by by parts (movable axis 5) have yoke, Abutting part and the function in axle portion, reduce parts number of packages.

It addition, the second yoke 52 of fixing terminal 32 side is because accepting more strongly to carry out self-retaining terminal 33 than the first yoke 6 Magnetic flux, so magnetic flux density increases.Therefore, if thicken the second yoke 52 above-below direction thickness, then with thicken the first magnetic The thickness of yoke 6 above-below direction is compared, and above-mentioned first magnetic attraction can be made more efficiently to increase.It is thus possible to by thickening The thickness of the second yoke 52, more reliably prevents the decline of contact pressure between contact.

It addition, in the present embodiment, abutting part 52 because using magnetic material to be formed, so as have abutting part and Second yoke 52 of the function of yoke both sides uses, but nonmagnetic substance can also be used to form abutting part 52, sets separately Put yoke.In the case of that, yoke to be arranged at the substantial middle fixing terminal 33 a pair, and the axle center pressing movable axis is relative Arrange.

Furthermore, in the present embodiment, because the second yoke 52 and the first yoke 6 are formed as a generally rectangular tabular, institute It is respectively substantially certain with the distance of each point on the face relative with the first yoke 6 of the second yoke 52 to the first yoke 6, can So that the first magnetic attraction working the first yoke 6 becomes uniform.

(embodiment 5)

For the contact arrangement of present embodiment, Figure 15 is used to illustrate.Further, at the contact arrangement of present embodiment With in the contact arrangement of embodiment 4, the only shape of yoke plate 7 (the first yoke) is different, about and embodiment 4 common Structure, then enclose general symbol, and the description thereof will be omitted.Further, in Figure 15 up and down on the basis of, will with up and down side Illustrate as fore-and-aft direction to orthogonal direction.

First yoke 7 of present embodiment as shown in figure 15, by substantially rectangular flat basilar part 7a with from this substrate A pair extended portion 7b that before and after portion 7a, two ends are the most extended, is formed as cross section substantially U-shaped.

And, as shown in figure 16, when between contact during conducting, because the front end of extended portion 7b and the in the first yoke 7 Two yokes 52 are close, so compared with embodiment 3, the gap between the second yoke 52 and the first yoke 7 diminishes, the first yoke 7 accept the first higher magnetic attraction from the second yoke 52.It is to say, on movable contact 35, bigger power upward rises Effect.

Thus, in the contact arrangement of present embodiment, first worked between the second yoke 52 and the first yoke 7 Magnetic attraction is bigger than embodiment 4, contact 35 produces bigger power upward, can prevent contact pressure between contact further Decline.

Here, above-mentioned first magnetic attraction because and on movable contact 35 produce bank of contacts repulsion (power down), Being the substantially 180 rightabout power of degree (power upward), acting as by the direction of this bank of contacts repulsion of most effective elimination so becoming Power.

Thus, the contact arrangement of present embodiment is owing to being provided with pair of permanent magnets 46, thus on each contact in left and right Contact consumption becomes roughly equal, furthermore, movable contact 35 is connect to fixing with the first magnetic attraction more higher than embodiment 4 Point 32 side attracts.It is to say, the contact arrangement of present embodiment possesses stable electric arc disconnects performance, and by the first yoke 7 push to fixed contact 32 side, have the switching performance of more stable contact.

It addition, in the present embodiment, although the second yoke 52 and axle portion 51 are one-body molded, but can also be by After the molding respectively of two yokes 52 and axle portion 51, in the second yoke 52, the chimeric axle portion 51 etc. that inserts forms as one.

Further, in the present embodiment, the second yoke 52 is because using magnetic material to be formed, so conduct has abutting part Use with the yoke abutting part of the function of yoke both sides, but nonmagnetic substance can also be used to form abutting part 52, separately Yoke is set.In the case of that, the 2nd yoke 52 to be arranged at the substantial middle fixing terminal 33 a pair, and presses movable axis Axle center is arranged the most relatively.

In addition, the lower surface substantial middle of basilar part 7a in the first yoke 7, form the most circular groove portion 71a, logical Cross and be embedded in the upper end of contact pressure spring 36 at this groove portion 71a and make the position of this contact pressure spring 36 stable, when can When creating bank of contacts repulsion on moving contact 35, uniform power can be made to work this movable contact 35, stable obtain for The tolerance of bank of contacts repulsion.

(embodiment 6)

For the contact arrangement of present embodiment, Figure 17 is used to illustrate.Further, at the contact arrangement of present embodiment With in the contact arrangement of embodiment 5, the only shape of yoke abutting part 53 (the second yoke 53) is different, about and embodiment 5 common structures, then enclose general symbol, and the description thereof will be omitted.Further, in Figure 17 up and down on the basis of, will be with upper The orthogonal direction of lower left and right directions illustrates as fore-and-aft direction.

Second yoke 53 of present embodiment as shown in figure 17, by substantially rectangular flat basilar part 53a with from this base A pair extended portion 53b that before and after the 53a of bottom, two ends are the most extended, is formed as cross section substantially U-shaped.

And, as shown in figure 18, when between contact during conducting, the front end face of the extended portion 53b of the second yoke 53 and the The front end face of the extended portion 7b of one yoke 7 is close, the first magnetic worked between the second yoke 53 and the first yoke 7 Gravitation increases further.Furthermore, because it is set as, the front end face of extended portion 53b and the front end face of extended portion 7b Between gap relative in the side end substantial middle of movable contact 35, it is possible to lower from the second yoke 53 and the first yoke The leakage magnetic flux that gap between 7 produces, it is possible to compared with embodiment 5, increase further in the second yoke 53 and the first yoke 7 Between the first magnetic attraction of working.It is to say, on movable contact 35, and the direction of displacement of this movable contact 35 is substantially Parallel bigger power upward works.

Thus, the contact arrangement of present embodiment is owing to being provided with pair of permanent magnets 46, thus on each contact in left and right Contact consumption becomes roughly equal, furthermore, movable contact 35 from the first yoke 7 with the power more higher than embodiment 4 by fixing Contact 32 side pushes.It is to say, the contact arrangement of present embodiment possesses stable electric arc disconnects performance, and have more The switching performance of stable contact.

It addition, in the present embodiment, the second yoke 53 has yoke and the function of abutting part both sides, and the second yoke 53 and axle portion 51 form as one, constitute movable axis 5.It is thus possible to by by parts (movable axis 5) have yoke, Abutting part and the function in axle portion, reduce parts number of packages.

Further, in the present embodiment, the second yoke 53 is because using magnetic material to be formed, so conduct has abutting part Use with the yoke abutting part of the function of yoke both sides, but nonmagnetic substance can also be used to form abutting part 53, separately Yoke is set.In the case of that, the second yoke 53 to be arranged at the substantial middle fixing terminal 33 a pair, and presses movable axis Axle center is arranged the most relatively.

(embodiment 7)

For the contact arrangement of present embodiment, use Figure 19,20 illustrate.Further, with in Figure 19 up and down On the basis of, the direction orthogonal with direction up and down is illustrated as fore-and-aft direction.

The contact arrangement of present embodiment possesses: fixing terminal 33, arranges fixed contact 32 in lower end；Movable contact 68, There is the travelling contact 61 separateing with fixed contact 32；Second yoke 69, relative with the upper surface of movable contact 68 joins Put；Contact pressure spring 65, presses movable contact 68 to fixed contact 32 side；Holding member 66, keeps the second yoke 69；Can Moving axis 67, and holding member 66 links；Electromagnet block 2, drives movable axis 67 so that travelling contact 61 is carried out with fixed contact 32 It separate.Further, for fixed contact 32, fixing terminal 33 and electromagnet block 2, since identical with embodiment 1, institute To enclose identical symbol, the description thereof will be omitted.

Movable contact 68 is formed as a generally rectangular tabular, and length direction (left and right directions) both end sides at upper surface sets respectively There is travelling contact 61.

Second yoke 69 uses the magnetic material of soft iron etc. to be formed as tabular, relative with the upper surface of movable contact 62 next Arrange.

Its upper end of contact pressure spring 65 abuts the lower surface substantial middle of movable contact 68, in the following table of movable contact 68 Substantial middle projecting jut 68a in face is fitted together in the upper end side inside diameter inserting contact pressure spring 65.

Holding member 66 includes: the basilar part 661 of substantially rectangular tabular；A pair clamping part 662, before basilar part 661 Rear each extends over setting upward to two ends；Abutting part 663, by the front end of a pair clamping part 662 in the longitudinal direction towards Inner side bending.

And, between a pair clamping part 662, configuration: contact pressure spring 65, the upper surface of lower end and basilar part 661 supports Connect；Movable contact 68, lower surface is touched compression spring 65 and pushes；The upper table of the second yoke 69, lower surface and movable contact 68 Face is relative, a pair clamping part 662 keep.

Here, the upper surface substantial middle of basilar part 661 on holding member 66, projecting generally cylindrical projection Portion 664, in this chimeric lower end side inside diameter inserting contact pressure spring 65 of jut 664.Whereby, contact pressure spring 65 with Compressive state is fixed between basilar part 661 and movable contact 68, is pressed to fixed contact 32 side (top) by movable contact 68. And, although by exerting pressure of contact pressure spring 65, movable contact 68 is mobile to fixing terminal 33 side (top), but Because the upper surface of movable contact 68 is connected to limit in the second yoke 69 of the movement toward top from abutting part 663, so Movement toward fixed contact 32 side is restricted.

Movable axis 67 is formed as, by the substantially barred body shape of above-below direction length, connecting electromagnet block 2 in lower end side, solid in upper end Determine the basilar part 661 of holding member 66.

And, in the contact arrangement of the present embodiment being made up of said structure, if making movable axis by drive mechanism 2 67 have carried out displacement upward, holding member 66 displacement the most upward that the movable axis 67 that accompanies the most therewith is connected.Then, companion With this displacement, the second yoke 69 that holding member 6 is kept also is moved upward, whereby to movable contact 68 shifting upward Dynamic restriction is released from.Then, movable contact 68 is moved upward by means of exerting pressure of contact pressure spring 65, movable contact 68 Upper set travelling contact 61 is connected on fixed contact 32, makes to turn between contact.

Here, because making to turn between contact, to movable contact 62 streaming current, so such as Fig. 5 (b) of embodiment 1 In illustrated as, on movable contact 68, electromagnetic force (captivation) upward works.It is to say, at movable contact 68 On, and the direction of displacement of this movable contact 68 almost parallel (vertical upward) captivation to fixed contact side works.

Here, to the vertical captivation upward of movable contact 68 generation effect because and producing on movable contact 68 Bank of contacts repulsion (power down), is 180 degree of rightabout power, so becoming the side by this bank of contacts repulsion of most effective elimination To the power worked.Therefore, it can utilize above-mentioned captivation effectively to eliminate bank of contacts repulsion, it is possible to lower contact indirection point pressure Decline.

Thus, the contact arrangement of present embodiment is owing to being provided with pair of permanent magnets 46, thus on each contact in left and right Contact consumption becomes roughly equal, furthermore, movable contact 35 is attracted by the second yoke 69 to fixed contact side, therefore, and this enforcement When the contact arrangement of mode can make load short circuits, the dosis tolerata to electromagnetic repulsive force is improved, and is provided simultaneously with stable electric arc Disconnect performance, it is thus achieved that the switching performance of more stable contact.

Further, fixed contact 32 can also be to be set to parts integrally with fixing terminal 33, or is set to split Any one of parts.Equally, travelling contact 61 can also be to be set to the parts of one with movable contact 62, or is set to point Any one of the parts of body.

(embodiment 8)

For the contact arrangement of present embodiment, Figure 21～25 is used to illustrate.Further, with in Figure 21 up and down On the basis of, the direction orthogonal with direction up and down is illustrated as fore-and-aft direction.

The contact arrangement of present embodiment possesses: fixing terminal 33, arranges fixed contact 32 in lower end；Movable contact 62, There is the travelling contact 61 separateing with fixed contact 32；Second yoke 63, relative with the upper surface of movable contact 62 joins Put；First yoke 64, relative with the lower surface of movable contact 62 configures；Contact pressure spring 65, is used for movable contact 62 Press to fixed contact 32 side；Holding member 66, keeps the second yoke 63；Movable axis 67, and holding member 66 links；Electric magnet Block 2, drives movable axis 67 so that travelling contact 61 separate with fixed contact 32.Further, for fixed contact 32, consolidate For fixed end 33 and electromagnet block 2, because identical with embodiment 1, so enclosing identical symbol, the description thereof will be omitted.

Movable contact 62 is formed as a generally rectangular tabular, and length direction (left and right directions) both end sides at upper surface sets respectively There is travelling contact 61.It addition, on movable contact 62 substantial middle on each long limit, formed substantially rectangular shape notch 62a.

Second yoke 63 uses the magnetic material of soft iron etc. to be formed as cross section substantially U-shaped, including: substantially rectangular tabular Basilar part 631, relative with the upper surface of movable contact 62；A pair extended portion 632, by the two ends bending of basilar part 631 Extend downward and form.And, the second yoke 63 is by inserting extended portion in the notch 62a of movable contact 62 632, limit the movement of movable contact 62 left and right directions.

First yoke 64 uses the magnetic material of soft iron etc. to be formed as a generally rectangular tabular, is fixed on movable contact 62 times Surface, relative with the second yoke 63 across movable contact 62.And, the front end of a pair extended portion 632 in the second yoke 63 Relative with the upper surface in the first yoke 64, movable contact 62 is sandwiched in the second, first yoke 63,64.Further, in this enforcement In mode, although the first yoke 64 is fixed on movable contact 62, and this movable contact 62 is arranged to integrally, but the first yoke 64 can also abut with the lower surface of movable contact 62, and this movable contact 62 split is arranged.

Its upper end of contact pressure spring 65 abuts with the lower surface of the first yoke 64, the first yoke 64 lower surface substantially The projecting jut 64a of central authorities is fitted together in the upper end side inside diameter inserting contact pressure spring 65.

Holding member 66 includes: the basilar part 661 of substantially rectangular tabular；A pair clamping part 662, before basilar part 661 Rear each extends over setting upward to two ends；Abutting part 663, is formed towards inner side bending by the front end of a pair clamping part 662.

And, between a pair clamping part 662, configure the movable contact 62 sandwiched by the second, first yoke 63,64 and connect Touch pressure spring 65, the second yoke 63 is kept by a pair clamping part 662.

Here, in the upper surface substantial middle of the basilar part 661 of holding member 66, projecting generally cylindrical projection Portion 664, in this chimeric lower end side inside diameter inserting contact pressure spring 65 of jut 664.Whereby, contact pressure spring 65 with Compressive state is fixed between basilar part 661 and the first yoke 64, across the first yoke 64 by movable contact 62 to fixed contact 32 sides (top) press.And, although by means of exerting pressure of contact pressure spring 65, movable contact 62 will be to fixing terminal 33 Side (top) is mobile, but the upper surface being because this movable contact 62 is connected to limit the movement toward top from abutting part 663 The second yoke 63 on, the movement of conventional fixed contact 32 side be restricted.

And, in the contact arrangement of the present embodiment being made up of said structure, if making movable axis by drive mechanism 2 67 have carried out displacement upward, holding member 66 displacement the most upward that the movable axis 67 that accompanies the most therewith is connected.Then, companion With this displacement, the second yoke 63 that holding member 6 is kept also is moved upward, whereby to movable contact 62 shifting upward Dynamic restriction is released from.Then, movable contact 62 is exerted pressure together with the first yoke 64 upwards by means of contact pressure spring 65 Fang Yidong, travelling contact 61 set on movable contact 62 is connected on fixed contact 32, makes to turn between contact.

Here, because making to turn between contact, to movable contact 62 streaming current, so generation around movable contact 62 Magnetic field, as shown in figure 23, forms the magnetic flux through the second, first yoke 63,64.Therefore, with this second, first yoke 63, Producing magnetic attraction between 64, the first yoke 64 is attracted by the second yoke 63.Therefore, the first yoke 64 pushes movable contact 62 Lower surface, works the power upward that this movable contact 62 pushes to fixed contact 32 side.

Here, the magnetic attraction the first yoke 64 worked because and on movable contact 62 produce bank of contacts repulsion (power down), being the substantially 180 rightabout power of degree, acting as by the direction of this bank of contacts repulsion of most effective elimination so becoming Power.

Thus, the contact arrangement of present embodiment possesses stable electric arc and disconnects performance, and because the first yoke 64 will Movable contact 62 pushes to fixed contact 32 side, so having stable contact switching performance.

It addition, because between contact after conducting, when movable axis 67 is driven to fixed contact 32 side again, (lower surface is referred to as During the excess of stroke), movable contact 62 is connected on fixing terminal 33, limits the movement toward top, so being protected on holding member 66 The second yoke 63 held is left from movable contact 62.Here, such as shown in Figure 24 (a), using the most flat as the second yoke Yoke 63' of tabular, use yoke 64' of substantially U-shaped as the first yoke in the case of because the magnetic circuit of yoke 63' and The magnetic circuit of yoke 64' is discontinuous, so producing leakage magnetic flux between yoke 63' and yoke 64'.

But, in the contact arrangement of present embodiment, because the second yoke 63 is shaped generally as U-shaped, even if so When the excess of stroke, as shown in Figure 24 (b), the extended portion 632 of the second yoke 63 also contacts with movable contact 62, therefore leads to Crossing movable contact 62, the magnetic circuit making the magnetic circuit of the second yoke 63 and the first yoke 64 is continuous, prevents leakage magnetic flux.It is thus possible to Prevent from producing leakage magnetic flux between the second yoke 63 and the first yoke 64, it is possible to prevent the magnetic attraction that the first yoke 64 is worked The decline of power.

Furthermore, as shown in figure 25, because its relative area S1 to movable contact 62 of the second yoke 63 of substantially U-shaped Bigger to the relative area S2 of movable contact 62, so more easily accepting from movable contact 62 than flat first yoke 64 Magnetic flux, furthermore, length of magnetic path L1 of the second yoke 63 becomes longer than length of magnetic path L2 of the first yoke 64.Therefore, if added The thickness of thick second yoke 63 above-below direction, then, compared with the thickness thickening the first yoke 64 above-below direction, can make further The magnetic attraction working the first yoke 64 effectively increases.

It addition, the second yoke 63 is because be positioned near fixing terminal 33 compared with the first yoke 64, it is easy to accept from The magnetic flux of this fixing terminal 33, so compared with the first yoke 64, magnetic flux density becomes higher.

According to upper surface, by the second yoke 63 of fixing terminal 33 side is shaped generally as U-shaped, so that it may so that right The magnetic attraction of the first yoke 64 effectively increases, it is for instance possible to use following yoke obtains, and the second yoke 63 is being made as flat board The magnetic attraction to the first yoke 64 obtained during shape, above-mentioned yoke is the substantially U that thickness is thin compared with this flat yoke The yoke of shape.Thus, by the second yoke 63 is made as substantially U-shaped, it is possible to guarantee the magnetic attraction to the first yoke 64 Power, the most also suppresses the thickness of this second yoke 63, it is possible to seek the miniaturization of contact arrangement.

(embodiment 9)

For the contact arrangement of present embodiment, Figure 26 is used to illustrate.Further, the contact arrangement of present embodiment exists In any one described contact arrangement of embodiment 1 to 8, between pair of permanent magnets 46, it is configured with permanent magnet pieces 48.Further, Because in the case of being provided with permanent magnet pieces 48 in any one contact arrangement of embodiment 1 to 8, can obtain same Action effect, so in the present embodiment, carry out about arranging permanent magnet pieces 48 in the contact arrangement of embodiment 1 The explanation of situation.Lower surface, in Figure 26 up and down on the basis of, using the direction orthogonal with direction up and down as front Rear is to illustrating.

Permanent magnet pieces 48 is shaped generally as rectangular-shaped, is configured at the substantial middle between pair of permanent magnets 46, and can The upper surface of moving contact 35 is relative, and, it is positioned at the substantial middle between a pair the 3rd yokes 47.Here, permanent magnet pieces 48 its Be configured to, for pair of permanent magnets 46 and a pair the 3rd yokes 47 the most mutually relative to face be almost parallel.

And, permanent magnet pieces 48 and pair of permanent magnets 46 each relative to the polarity in each (the first face), with The polarity set in the face of this first relative permanent magnet 46 is heteropole (S pole), each relative with a pair the 3rd yokes 47 The polarity in (the second face), the polarity set with first is heteropole (N pole).If it is to say, each side, permanent magnet pieces 48 left and right The polarity set in face is N pole, and the polarity set of the most each side is S pole.Therefore, between pair of permanent magnets 46 and a pair the 3rd The magnetic flux produced between yoke 47 is attracted by permanent magnet pieces 48, this permanent magnet 46 relay.

Thus, the contact arrangement of present embodiment is because be provided with permanent magnet pieces 48, so between pair of permanent magnets 46 And the leakage magnetic flux between a pair the 3rd yokes 47 is inhibited, and improve the magnetic flux density near each contact portion.Thus, by arranging Permanent magnet pieces 48, the magnetic flux density near each contact portion increases, and the power of the electric arc that elongation produces in contact portion can be made to increase, Improve electric arc further and disconnect performance.

(different example 1)

The contact arrangement of present embodiment and the contact arrangement of embodiment 1, difference is the configuration of permanent magnet 46.Have Closing and the common structure of embodiment 1, then enclose general symbol, the description thereof will be omitted, and with in Figure 27 up and down as base Standard, illustrates the direction orthogonal with direction up and down as fore-and-aft direction.

The permanent magnet 46 of present embodiment is shaped generally as rectangular-shaped, arranges for the width side of movable contact 35 To almost parallel.Here, permanent magnet 46 passes through fixed contact 32 and travelling contact 34 in the left side of movable contact 35 and right side Between gap (contact clearance) and be mutually relatively respectively configured, relative pair of permanent magnets 46 its be configured to, the most mutually To the polarity identical (being S pole in the present embodiment) of each.It is to say, the permanent magnet 46 in left side is set to, the right side Being S pole and the left side is N pole, the permanent magnet 46 on right side is set to, and the left side is S pole and the right side is N pole.

It addition, pair of permanent magnets 46 its be configured to, mutually relative to each be centrally located at link a pair fixed contact On the extended line of the straight line of 32.In addition, it is configured to, the distance between permanent magnet 46 and the contact portion in left side in left side And distance between permanent magnet 46 and the contact portion on right side on right side is roughly equal.Thus, by pair of permanent magnets 46 And the magnetic field produced around each contact portion is with the inserting hole 35a through movable contact 35 the straight line X along fore-and-aft direction For object axle, be formed as symmetrical.

Furthermore, because between pair of permanent magnets 46, (lower surface is referred to as the second yoke to there is the contact site 52 of movable axis 5 52), so the magnetic flux produced between pair of permanent magnets 46 attracted to the second yoke 52 side.

In the contact arrangement of present embodiment, if being moved upward movable axis 37 by electromagnet block 2, then for can The moving contact 35 restriction to fixed contact 32 side is released from, movable contact 35 exerting pressure to solid by means of contact pressure spring 37 Fixed juncture 32 side shifting.Whereby, travelling contact 34 is connected on fixed contact 32, makes to turn between contact.

And, the electric arc produced (between contact) between fixed contact 32 and travelling contact 34 is no matter in movable contact 35 Which direction is the sense of current of flowing be, all passes through the above-mentioned magnetic field formed around each contact portion, by being located remotely from each other Direction elongate.If describing in detail, it is simply that in Figure 28, in the case of electric current flows in movable contact 35 from left to right, The electric arc produced between the contact in left side is elongated to left back, and the electric arc produced between the contact on right side is elongated to right back. It addition, in Figure 28, in the case of electric current flows in movable contact 35 from right to left, the electric arc produced between the contact in left side Being elongated to left front, the electric arc produced between the contact on right side is elongated to right front.

Here, in the present embodiment, because the magnetic flux produced between pair of permanent magnets 46 is attracted by the second yoke 52, So the magnetic flux density near each contact portion increases, improve the power of elongating arc.Thus, even if reducing permanent magnet 46 In the case of size, it is also possible to maintain and electric arc is carried out the power required for arc extinguishing.It is to say, the contact arrangement of present embodiment Miniaturization can be sought, the most also obtain stable electric arc and disconnect performance.

It addition, as described in upper surface, because around each contact portion, form a left side with straight line X for object axle The magnetic field of right symmetry, so the magnetic flux density in each contact portion is roughly equal, the power of elongating arc substantially phase in each contact portion Deng, it is possible to obtain more stable electric arc disconnects performance.

Furthermore, as it is shown on figure 3, can be the most relative with each end face of movable contact 35 width, connection is set a pair A pair the 3rd yokes 47 of permanent magnet 46.3rd yoke 47 is by the basilar part relative with the end face of movable contact 35 width 47a and following a pair extended portion 47b is shaped generally as U-shaped, and this pair extended portion 47b is from the two of basilar part 47a End the most vertically each extends over setting for this basilar part 47a, and is connected respectively with pair of permanent magnets 46.Here, one Extended portion 47b is connected on the face of side, N pole of pair of permanent magnets 46.It is to say, an extended portion 47b is even On the right side of the permanent magnet 46 being connected to right side, another extended portion 47b is connected to the left side of the permanent magnet 46 in left side On.

Therefore, the magnetic flux produced from pair of permanent magnets 46 is attracted by the 3rd yoke 47, suppresses leakage magnetic flux, can improve Magnetic flux density near each contact, the power elongating the electric arc produced between contact increases.Thus, because by arranging the 3rd yoke 47, even if reducing the size of permanent magnet 46, it is also possible to maintain the power of elongating arc, it is possible to pilot arc disconnects performance, The most also seek the miniaturization of further contact arrangement, cost degradation.

If it addition, flowed electric current to contact 35 in the contact arrangement of present embodiment, then forming the figure of embodiment 1 That magnetic field illustrated in 5 (a), (b), electromagnetic force (captivation) generation effect upward on movable contact 35.It is to say, On movable contact 35, and the captivation that the direction of displacement of this movable contact 35 almost parallel (vertical upward) is to fixed contact side Generation effect.Therefore, it can utilize above-mentioned captivation effectively to offset bank of contacts repulsion, it is possible to lower under contact indirection point pressure Fall.Thus, the contact arrangement of present embodiment passes through to be attracted to fixed contact side by movable contact 35 by yoke contact site 52, and Obtain the switching performance of stable contact.

And, the contact arrangement of above-mentioned present embodiment is such as used in shown in Figure 30 (a), (b) and Figure 31 (a)～(c) That electromagnetic relay in.

Use the above-mentioned electromagnetic relay of present embodiment contact arrangement because pair of permanent magnets becomes travelling contact It is set up in parallel direction, thus in addition to mutually relatively being arranged by above-mentioned contact block and described in above-mentioned embodiment 1 The structure of bright electromagnetic relay is identical.Even if using the above-mentioned electromagnetic relay of present embodiment contact arrangement, also and make Electromagnetic relay with embodiment 1 contact arrangement is identical, can possess stable contact switching performance, and seek small-sized Change, cost degradation.

(different example 2)

For the contact arrangement of present embodiment, Figure 32 is used to illustrate.Further, at the contact arrangement of present embodiment With in the contact arrangement of different example 1, only for movable contact 35 differently configured of pair of permanent magnets 46, about and different example 1 Common structure, then enclose general symbol, and the description thereof will be omitted.Further, using in Figure 32 up and down as all around entering Row explanation.Furthermore, the explanation of lower surface is set to current streaming current from left to right in movable contact 35, illustrates.

As shown in different example 1, the electric arc produced in the contact portion in left side is elongated to left back, on right side Contact portion on produce electric arc by right back elongate (seeing the arrow in Figure 32).Here, in the present embodiment, movably Contact 35 is arranged adjacent to the 3rd yoke 47 in front between a pair the 3rd yokes 47.It is to say, only by movable contact 35, Central mobile between a pair the 3rd yokes 47 must be near the 3rd yoke 47 in front, and the space of movable contact 35 rear side just becomes Obtain roomy.

Thus, in the contact arrangement of present embodiment, in movable contact 35 flowing electric current towards in Figure 32 For in the case of the right side, the distance of elongating arc can be extended compared with different example 1, it is possible to make to break for the electric arc of forward current Open performance to be improved.

It addition, as shown in figure 33, can be by being respectively configured pair of permanent magnets 46, in order to pair of permanent magnets 46 is mutual Relative each is centrally located on the straight line linking a pair fixed contact, improves the magnetic flux density near each contact portion.Also That is, the power elongated rearward by arc current becomes strong, electric arc can be made to disconnect performance and be further enhanced.

Further, in the present embodiment, although for being oriented towards right feelings of the electric current of flowing in movable contact 35 Shape is illustrated, but reversely also is able to be suitable in the case of (turning left from the right side) in being oriented of electric current.But, that situation Under, as long as the movable contact 35 central authorities between the 3rd yoke 47 to be arranged close to the 3rd yoke 47 at rear, it is possible to.

(different example 3)

For the contact arrangement of present embodiment, Figure 34 is used to illustrate.Further, at the contact arrangement of present embodiment With in the contact arrangement of different example 1, the only shape of the second yoke 53 of movable axis 5 is different, about the structure common with different example 1, Then enclosing general symbol, the description thereof will be omitted.Further, in Figure 34 up and down on the basis of, will with direction up and down just The direction handed over illustrates as fore-and-aft direction.

Second yoke 53 of present embodiment as shown in figure 34, by substantially rectangular flat basilar part 53a with from this base A pair extended portion 53b that before and after the 53a of bottom, two ends are the most extended, is formed as cross section substantially U-shaped.

And, when between contact during conducting, the lower surface of the basilar part 53a of abutting part 53 connects with the upper surface of movable contact 35 Closely, and a pair extended portion 53b is close with the front end of movable contact 35 and rear end respectively.

On the other hand, in fig. 12, in movable contact 35, magnetic flux from left to right is all moved upward, with above-mentioned figure Tabular the second yoke 52 shown in 6 (b) is arranged on the situation near movable contact 35 and compares, past from a left side in movable contact 35 Right magnetic flux quantity increases further.

Then, by movable contact 35 magnetic flux from left to right and to this movable contact 35 generation effect upward Electromagnetic force and the magnetic flux by turning left from the right side in movable contact 35 and electromagnetism down to this movable contact 35 generation effect Power is compared, and becomes much larger.Therefore, on movable contact 35, and the direction of displacement of this movable contact 35 is almost parallel and bigger Vertical electromagnetic force (captivation) upward works.

Thus, in the contact arrangement of present embodiment, by the second yoke 52, for movable contact 35, than different example 1 more The strong power (captivation) eliminating bank of contacts repulsion works.It is to say, the contact arrangement of present embodiment can make load During short circuit, the dosis tolerata to electromagnetic repulsive force is improved, and is provided simultaneously with stable electric arc and disconnects performance, it is thus achieved that be more stable The switching performance of contact.Additionally, in the present embodiment, the second yoke 53 has yoke and the function of abutting part both sides, and Second yoke 53 and axle portion 51 form as one and constitute movable axis 5.It is thus possible to by being had by parts (movable axis 5) There are yoke, abutting part and the function in axle portion, reduce parts number of packages.

(different example 4)

For the contact arrangement of present embodiment, Figure 35 is used to illustrate.But, about the structure common with different example 1, Then enclosing general symbol, the description thereof will be omitted.Further, in Figure 35 up and down on the basis of, will with direction up and down just The direction handed over illustrates as fore-and-aft direction.

In the contact arrangement of the different example 1 shown in the contact arrangement of present embodiment and Figure 27, difference is, movably The lower surface of contact 35 fixing relative with abutting part 52 by this movable contact 35, be such as made up of the magnetic material of soft iron etc. Yoke plate 6 (lower surface is referred to as the first yoke 6).

In the contact arrangement of present embodiment, if making movable axis 5 carry out displacement upward, then by drive mechanism 2 Therewith accompany movable axis 5 the second yoke 52 displacement the most upward.Then, with the displacement upward of the second yoke 52, movably The restriction of contact 35 (fixed contact 32 side) upward is released from, and movable contact 35 is exerted pressure by means of contact pressure spring 36 Displacement upward.Then, set on movable contact 35 travelling contact 34 makes between contact on fixed contact 32 because being connected to Conducting.Now, the second yoke 52 is kept the position after displacement by drive mechanism 2, utilize contact pressure spring 36 and remain on The movable contact 35 of side abuts or close.

It addition, because making to turn between contact, to movable contact 35 streaming current, so product around this movable contact 35 Magnetisation field, as shown in figure 14, is formed through the second yoke 52 and magnetic flux of the first yoke 6, in the second yoke 52 and the first yoke 6 Between produce the second magnetic attraction.

Then, by the second magnetic attraction worked between the second yoke 52 and the first yoke 6, the first yoke 6 quilt Second yoke 52 attracts.It is to say, on movable contact 35 after fixing the first yoke 6, and the displacement of this movable contact 35 Almost parallel (being pushed to fixed contact 32 side by the movable contact 35) power upward in direction works.

Here, make movable contact 35 by work between the second yoke 52 and first yoke 6 of power upward the Two magnetic attractions because and on movable contact 35 produce bank of contacts repulsion (power down), be substantially 180 degree rightabouts Power, so becoming the power worked by the direction of this bank of contacts repulsion of most effective elimination.Therefore, at the contact of present embodiment In device, can effectively eliminate bank of contacts repulsion by means of above-mentioned second magnetic attraction, it is possible to lower contact pressure between contact Decline.

Thus, when the contact arrangement of present embodiment makes load short circuits, the dosis tolerata to electromagnetic repulsive force is improved, with Time possess stable electric arc and disconnect performance, there is the switching performance of more stable contact.

It addition, the second yoke 52 of fixing terminal 32 side is because accepting more strongly to carry out self-retaining terminal 33 than the first yoke 6 Magnetic flux, so magnetic flux density increases.Therefore, if thicken the second yoke 52 above-below direction thickness, then with thicken the first magnetic The thickness of yoke 6 above-below direction is compared, and above-mentioned second magnetic attraction can be made more efficiently to increase.It is thus possible to by thickening The thickness of the second yoke 52, more reliably prevents the decline of contact pressure between contact.

It addition, in the present embodiment, abutting part 52 because using magnetic material to be formed, so as have abutting part and Second yoke 52 of the function of yoke both sides uses, but nonmagnetic substance can also be used to form abutting part 52, sets separately Put yoke.In the case of that, yoke to be arranged at the substantial middle fixing terminal 33 a pair, and presses the axle center phase of movable axis 5 To arranging.

Furthermore, in the present embodiment, because the second yoke 52 and the first yoke 6 are formed as a generally rectangular tabular, institute It is respectively substantially certain with the distance of each point on the face relative with the first yoke 6 of the second yoke 52 to the first yoke 6, can So that the second magnetic attraction working the first yoke 6 becomes uniform.

(different example 5)

First yoke 7 of present embodiment as shown in figure 36, by substantially rectangular flat basilar part 7a with from this substrate A pair extended portion 7b that before and after portion 7a, two ends are the most extended, is formed as cross section substantially U-shaped.

And, as shown in figure 16, when between contact during conducting, because the front end of extended portion 7b and the in the first yoke 7 Two yokes 52 are close, so compared with different example 3, the gap between the second yoke 52 and the first yoke 7 diminishes, the first yoke 7 from Second yoke 52 accepts the second higher magnetic attraction.It is to say, on movable contact 35, bigger power upward acts as With.

Thus, in the contact arrangement of present embodiment, second worked between the second yoke 52 and the first yoke 7 Magnetic attraction is bigger than different example 3, and contact 35 can produce bigger power upward, prevents between contact under contact pressure further Fall.

Here, above-mentioned second magnetic attraction because and on movable contact 35 produce bank of contacts repulsion (power down), Being the substantially 180 rightabout power of degree (power upward), acting as by the direction of this bank of contacts repulsion of most effective elimination so becoming Power.

Thus, its movable contact 35 of the contact arrangement of present embodiment with second magnetic attraction more higher than different example 3 by Fixed contact 32 side attracts.It is to say, tolerance to electromagnetic repulsive force when the contact arrangement of present embodiment makes load short circuits Amount is improved, and is provided simultaneously with stable electric arc and disconnects performance, and it is movable to utilize the first yoke 7 to push toward fixed contact 32 side Contact 35, has the switching performance of more stable contact.

It addition, in the present embodiment, although the second yoke 52 and axle portion 51 are one-body molded, but can also be by magnetic After the molding respectively of yoke contact site 52 and axle portion 51, in the second yoke 52, the chimeric axle portion 51 etc. that inserts forms as one.

Further, in the present embodiment, the second yoke 52 is because using magnetic material to be formed, so conduct has abutting part Use with the yoke abutting part of the function of yoke both sides, but nonmagnetic substance can also be used to form abutting part 52, separately Yoke is set.In the case of that, the second yoke 52 to be arranged at the substantial middle fixing terminal 33 a pair, and presses movable axis Axle center is arranged the most relatively.

In addition, the lower surface substantial middle of basilar part 7a in the first yoke 7, form the most circular groove portion 71a, logical Cross and be embedded in the upper end of contact pressure spring 36 at this groove portion 71a and make the position of this contact pressure spring 36 stable, when can When creating bank of contacts repulsion on moving contact 35, this movable contact 35 can make uniform power generation effect, it is right stably to obtain Tolerance in bank of contacts repulsion.

(different example 6)

For the contact arrangement of present embodiment, Figure 37 is used to illustrate.Further, at the contact arrangement of present embodiment With in the contact arrangement of different example 5, the only shape of yoke abutting part 53 (the second yoke 53) is different, about and different example 4 common Structure, then enclose general symbol, and the description thereof will be omitted.Further, in Figure 37 up and down on the basis of, will with up and down side Illustrate as fore-and-aft direction to orthogonal direction.

Second yoke 53 of present embodiment as shown in figure 37, by substantially rectangular flat basilar part 53a with from this base A pair extended portion 53b that before and after the 53a of bottom, two ends are the most extended, is formed as cross section substantially U-shaped.

And, as shown in figure 18, when between contact during conducting, the front end face of the extended portion 53b of the second yoke 53 and the The front end face of the extended portion 7b of one yoke 7 is close, the second magnetic worked between the second yoke 53 and the first yoke 7 Gravitation increases further.Furthermore, because being set as, the front end face of extended portion 53b and the front end face of extended portion 7b it Between gap relative in the substantial middle of movable contact 35 side end, it is possible to lower from the second yoke 53 and the first yoke 7 Between gap produce leakage magnetic flux, it is possible to compared with different example 4, increase further between the second yoke 53 and the first yoke 7 The second magnetic attraction worked.It is to say, on movable contact 35, and the direction of displacement of this movable contact 35 is almost parallel Bigger power upward work.

Thus, when the contact arrangement of present embodiment makes load short circuits, the dosis tolerata to electromagnetic repulsive force is improved, with Time possess stable electric arc and disconnect performance, and push movable contact 35, tool to fixed contact 32 side with the power more higher than different example 4 There is the switching performance of more stable contact.Here, above-mentioned second magnetic attraction because and on movable contact 35 produce connect Point repulsive force (power down), is the substantially 180 rightabout power of degree (power upward), so becoming by most effective elimination, this connects The power worked in the direction of some repulsive force.

(different example 7)

For the contact arrangement of present embodiment, use Figure 38,20 illustrate.Further, with in Figure 38 up and down On the basis of, the direction orthogonal with direction up and down is illustrated as fore-and-aft direction.

The contact arrangement of present embodiment possesses: fixing terminal 33, arranges fixed contact 32 in lower end；Movable contact 68, There is the travelling contact 61 separateing with fixed contact 32；Second yoke 69, relative with the upper surface of movable contact 68 joins Put；Contact pressure spring 65, presses movable contact 68 to fixed contact 32 side；Holding member 66, keeps the second yoke 69；Can Moving axis 67, and holding member 66 links；Electromagnet block 2, drives movable axis 67 so that travelling contact 61 is carried out with fixed contact 32 It separate；Pair of permanent magnets 46, the most relative with the left end of movable contact 68 and right-hand member.Further, for fixed contact 32, For fixing terminal 33, electromagnet block 2 and permanent magnet 46, because identical with embodiment 1, so enclosing identical symbol, The description thereof will be omitted.

Its upper end of contact pressure spring 65 is connected to the lower surface substantial middle of movable contact 68, movable contact 68 times Substantial middle projecting jut 68a in surface is fitted together in the upper end side inside diameter inserting contact pressure spring 65.

Holding member 66 includes: the basilar part 661 of substantially rectangular tabular；A pair clamping part 662, before basilar part 661 Rear each extends over setting upward to two ends；Abutting part 663, by the front end of a pair clamping part 662 in the longitudinal direction towards Inner side bending forms.

Here, the upper surface substantial middle of basilar part 661 on holding member 66, projecting generally cylindrical projection Portion 664, in this chimeric lower end side inside diameter inserting contact pressure spring 65 of jut 664.Whereby, contact pressure spring 65 with Compressive state is fixed between basilar part 661 and movable contact 68, is pressed to fixed contact 32 side (top) by movable contact 68. And, although by means of exerting pressure of contact pressure spring 65, movable contact 68 is mobile to fixing terminal 33 side (top), but The upper surface being because movable contact 68 is connected to limit in the second yoke 69 of the movement toward top from abutting part 663, institute The movement of fixed contact 32 side in the past is restricted.

And, in the contact arrangement of the present embodiment being made up of said structure, if making movable axis by drive mechanism 2 67 have carried out displacement upward, holding member 66 displacement the most upward that the movable axis 67 that accompanies the most therewith is connected.Then, companion With this displacement, the second yoke 69 that holding member 66 is kept also is moved upward, whereby to movable contact 68 upward Mobile restriction is released from.Then, movable contact 68 is moved upward by means of exerting pressure of contact pressure spring 65, movable contact Travelling contact 61 set on 68 is connected on fixed contact 32, makes to turn between contact.

Here, because making to turn between contact, to movable contact 62 streaming current, so such as institute in Fig. 5 (b) of different example 1 As explanation, on movable contact 68, electromagnetic force (captivation) upward works.It is to say, on movable contact 68, Almost parallel with the direction of displacement of this movable contact 68 (vertical upward) captivation to fixed contact side works.

Thus, the contact arrangement of present embodiment is owing to being provided with pair of permanent magnets 46, thus does not relies on electric current Direction, elongates the electric arc produced on each contact in left and right under the most short-circuit situation, furthermore, the second yoke 69 is by movable contact 35 Attract to fixed contact side, therefore, tolerance to electromagnetic repulsive force when the contact arrangement of present embodiment can make load short circuits Amount is improved, and is provided simultaneously with stable electric arc and disconnects performance, it is thus achieved that the switching performance of more stable contact.

(different example 8)

For the contact arrangement of present embodiment, Figure 39 and 22～25 is used to illustrate.Further, upper and lower with in Figure 39 On the basis of Zuo You, the direction orthogonal with direction up and down is illustrated as fore-and-aft direction.

The contact arrangement of present embodiment possesses: fixing terminal 33, arranges fixed contact 32 in lower end；Movable contact 62, There is the travelling contact 61 separateing with fixed contact 32；Second yoke 63, relative with the upper surface of movable contact 62 joins Put；First yoke 64, relative with the lower surface of movable contact 62 configures；Contact pressure spring 65, is used for movable contact 62 Press to fixed contact 32 side；Holding member 66, keeps the second yoke 63；Movable axis 67, and holding member 66 links；Electric magnet Block 2, drives movable axis 67 so that travelling contact 61 separate with fixed contact 32；Pair of permanent magnets 46, and movably The left end of contact 68 and right-hand member are the most relatively.Further, permanent for fixed contact 32, fixing terminal 33, electromagnet block 2 and a pair For Magnet 46, because identical with different example 1, so enclosing identical symbol, the description thereof will be omitted.

Second yoke 63 uses the magnetic material of soft iron etc. to be formed as cross section substantially U-shaped, including: substantially rectangular tabular Basilar part 631, relative with the upper surface of movable contact 62；A pair extended portion 632, the two ends of bending basilar part 631, to Lower section is extended.And, the second yoke 63, by inserting extended portion 632 in the notch 62a of movable contact 62, is come Limit the movement of movable contact 62 left and right directions.

First yoke 64 uses the magnetic material of soft iron etc. to be formed as a generally rectangular tabular, is fixed on movable contact 62 times Surface, relative with the second yoke 63 across movable contact 62.And, the front end of a pair extended portion 632 in the second yoke 63 Relative with the upper surface of the first yoke 64, movable contact 62 is sandwiched in the second, first yoke 63,64.Further, this embodiment party In formula, although the first yoke 64 is fixed on movable contact 62, and this movable contact 62 is arranged to integrally, but the first yoke 64 Can also abut with the lower surface of movable contact 62, and this movable contact 62 split is arranged.

Here, the upper surface substantial middle of basilar part 661 on holding member 66, projecting generally cylindrical projection Portion 664, in this chimeric lower end side inside diameter inserting contact pressure spring 65 of jut 664.Whereby, contact pressure spring 65 with Compressive state is fixed between basilar part 661 and the first yoke 64, across the first yoke 64 by movable contact 62 to fixed contact 32 sides (top) press.And, although by means of exerting pressure of contact pressure spring 65, movable contact 62 will be to fixing terminal 33 Side (top) is mobile, but the upper surface being because this movable contact 6 is connected to limit the movement toward top from abutting part 663 In second yoke 63, the movement of conventional fixed contact 32 side be restricted.

And, in the contact arrangement of the present embodiment being made up of said structure, if making movable axis by drive mechanism 2 67 have carried out displacement upward, holding member 66 displacement the most upward that the movable axis 67 that accompanies the most therewith is connected.Then, companion With this displacement, the second yoke 63 that holding member 6 is kept also is moved upward, whereby to movable contact 62 shifting upward Dynamic restriction is released from.Then, movable contact 62 is exerted pressure by means of contact pressure spring 65, together with the first yoke 64 upwards Fang Yidong, travelling contact 61 set on movable contact 62 is connected on fixed contact 32, makes to turn between contact.

Thus, when the contact arrangement of present embodiment makes load short circuits, the dosis tolerata to electromagnetic repulsive force is improved, with Time possess stable electric arc and disconnect performance, and because movable contact 62 is pushed by the first yoke 64 to fixed contact 32 side, institute To have the switching performance of stable contact.

But, in the contact arrangement of present embodiment, because the second yoke 63 is shaped generally as U-shaped, even if so When the excess of stroke, as shown in Figure 24 (b), the extended portion 632 of the second yoke 63 also contacts with movable contact 62, therefore every Movable contact 62, the magnetic circuit making the magnetic circuit of the second yoke 63 and the first yoke 64 is continuous, prevents leakage magnetic flux.It is thus possible to Prevent from producing leakage magnetic flux between the second yoke 63 and the first yoke 64, it is possible to prevent the magnetic attraction that the first yoke 64 is worked The decline of power.

Furthermore, as shown in figure 25, because its relative area S1 to movable contact 62 of the second yoke 63 of substantially U-shaped Bigger to the relative area S2 of movable contact 62, so more easily accepting from movable contact 62 than tabular the first yoke 64 Magnetic flux, furthermore, length of magnetic path L1 of the second yoke 63 becomes longer than length of magnetic path L2 of the first yoke 64.Therefore, if thickeied The thickness of the second yoke 63 above-below direction, then, compared with the thickness thickening the first yoke 64 above-below direction, it is right to make further The magnetic attraction that first yoke 64 works increases effectively.

It addition, the second yoke 63 is because be positioned near fixing terminal 33 compared with the first yoke 64, it is easy to accept from this The magnetic flux of fixing terminal 33, so compared with the first yoke 64, magnetic flux density becomes higher.

According to upper surface, because the second yoke 63 of fixing terminal 33 side is shaped generally as U-shaped, it is possible to make The magnetic attraction of the first yoke 64 is increased effectively, it is for instance possible to use following yoke obtains, the second yoke 63 is being made as The magnetic attraction to the first yoke 64 obtained during tabular, above-mentioned yoke is thin big of thickness compared with this flat yoke Cause the yoke of U-shaped.Thus, by the second yoke 63 is made as substantially U-shaped, it is possible to guarantee the magnetic to the first yoke 64 Captivation, the most also suppresses the thickness of this second yoke 63, it is possible to seek the miniaturization of contact arrangement.

(different example 9)

For the contact arrangement of present embodiment, Figure 40 is used to illustrate.Further, the contact arrangement of present embodiment exists In any one described contact arrangement of different example 1 to 8, between pair of permanent magnets 46, it is configured with permanent magnet pieces 48.Further, because Even if in the case of arranging permanent magnet pieces 48 in any one contact arrangement of different example 1 to 8, same effect can be obtained Effect, so in the present embodiment, carries out saying of the situation about arranging permanent magnet pieces 48 in the contact arrangement of different example 1 Bright.Lower surface, in Figure 40 up and down on the basis of, the direction orthogonal with direction up and down is carried out as fore-and-aft direction Explanation.

And, permanent magnet pieces 48 and pair of permanent magnets 46 each relative to the polarity in each (the second face), with The polarity set in the face of this second relative permanent magnet 46 is heteropole (N pole), each relative with a pair the 3rd yokes 47 Polarity be heteropole (S pole) with the polarity set of second.It is to say, the polarity of the most each side of permanent magnet pieces 48 sets Being set to N pole, the polarity set of the most each side is S pole.Therefore, the magnetic flux produced between pair of permanent magnets 46 is by permanent magnet Sheet 48 attracts, this permanent magnet 46 relay.

Thus, the contact arrangement of present embodiment is because be provided with permanent magnet pieces 48, so between pair of permanent magnets 46 Leakage magnetic flux be inhibited, and improve the magnetic flux density near each contact portion.Thus, by arranging permanent magnet pieces 48, respectively connect Magnetic flux density near some portion increases, and makes the power of the electric arc that elongation produces in contact portion increase, electric arc can be made to disconnect performance It is further enhanced.

Upper surface, although the present invention is illustrated centered by specific embodiment, but can be the ancestor of the present invention In the range of purport and attached claims, this technical field has various accommodation, changes or revise, thus, Above-mentioned explanation and accompanying drawing do not limit the technology design of the present invention, and must be construed to the example of the example present invention.

Claims

1. a contact arrangement, is characterized by,

Possess:

Contact block, is fixed terminal by a pair with fixed contact and movable contact is constituted, and this movable contact is arranged side by side in one side A pair travelling contact separateing respectively with above-mentioned a pair fixed contact is set；

Drive block, drives above-mentioned movable contact, in order to above-mentioned travelling contact separate with above-mentioned fixed contact；

Pair of permanent magnets, with above-mentioned travelling contact be set up in parallel direction and above-mentioned travelling contact and above-mentioned fixed contact Between separate on orthogonal direction, direction, mutually relatively arrange across above-mentioned contact block, mutually relative to face Each polarity is identical；

Second yoke, and above-mentioned pair of permanent magnets is configured between above-mentioned pair of permanent magnets abreast；And

First yoke, contacts with the another side of above-mentioned movable contact, relative with above-mentioned second yoke across above-mentioned movable contact And arrange,

Above-mentioned drive block possesses: abutting part, limits above-mentioned movable contact upwards by abutting with the one side of above-mentioned movable contact State the movement of fixed contact side；Movable axis, possesses above-mentioned abutting part；Electromagnet block, drive above-mentioned movable axis so that above-mentioned movably Contact separate with above-mentioned fixed contact,

Above-mentioned second yoke doubles as above-mentioned abutting part, and above-mentioned movable axis forms as one,

On the above-mentioned travelling contact contact separation direction with above-mentioned fixed contact, the thickness ratio above-mentioned first of above-mentioned second yoke The thickness of yoke is big.

2. contact arrangement as claimed in claim 1, is characterized by,

Relative with the end face of the above-mentioned movable contact being set up in parallel on direction of above-mentioned travelling contact, arrange connection above-mentioned a pair forever The 3rd yoke between Magnet for a long time.

3. contact arrangement as claimed in claim 1 or 2, is characterized by,

Above-mentioned drive block is also equipped with: contact pressure spring, is pressed to fixed contact side by above-mentioned movable contact.

4. contact arrangement as claimed in claim 3, is characterized by,

Above-mentioned movable axis also includes: axle portion, is movably inserted through on above-mentioned movable contact in the inserting hole formed, above-mentioned supports The portion of connecing is arranged at the one end in this axle portion.

5. contact arrangement as claimed in claim 3, is characterized by,

Above-mentioned drive block limits the movement to above-mentioned fixed contact side of the above-mentioned movable contact by above-mentioned second yoke.

6. contact arrangement as claimed in claim 1 or 2, is characterized by,

Above-mentioned contact block is accommodated in container, and a part for above-mentioned second yoke at least periphery abuts with the inwall of said vesse.

7. contact arrangement as claimed in claim 1 or 2, is characterized by,

Above-mentioned contact block is accommodated in container, a part for above-mentioned first, second yoke at least periphery and the inwall of said vesse Abut respectively.

8. contact arrangement as claimed in claim 1 or 2, is characterized by,

Above-mentioned second yoke is formed as tabular.

9. contact arrangement as claimed in claim 1 or 2, is characterized by,

At least any one is formed as tabular to above-mentioned first, second yoke.

10. contact arrangement as claimed in claim 1 or 2, is characterized by,

Above-mentioned second yoke by the tabular basilar part relative with above-mentioned movable contact and the end from this basilar part towards above-mentioned A pair extended portion that movable contact side is extended, is shaped generally as cross section U-shaped.

11. contact arrangements as claimed in claim 1 or 2, is characterized by,

Above-mentioned first, second yoke at least any one by the flat basilar part relative with above-mentioned movable contact with from this substrate A pair extended portion that the end in portion is extended towards above-mentioned movable contact side, is shaped generally as cross section U-shaped.

12. contact arrangements as claimed in claim 10, is characterized by,

Gap between above-mentioned first, second yoke is at least when above-mentioned travelling contact and above-mentioned fixed contact abut, with above-mentioned The side end of movable contact is relative.

13. contact arrangements as claimed in claim 2, is characterized by,

Possess permanent magnet pieces, with above-mentioned pair of permanent magnets respectively relative to the polarity of first be set to relative forever The for a long time polarity heteropole in the face of Magnet, the polarity of second relative with a pair the 3rd yokes is set to different with the polarity of first Pole, is configured between above-mentioned pair of permanent magnets.

14. contact arrangements as claimed in claim 3, is characterized by,

Above-mentioned first yoke and the face contrary with the face that above-mentioned movable contact abuts on, formed by above-mentioned contact pressure spring The groove portion that one end embeds.

15. contact arrangements as claimed in claim 3, is characterized by,

Above-mentioned first yoke and the face contrary with the face that above-mentioned movable contact abuts on, formed and embed above-mentioned contact pressure spring One end in jut.

16. contact arrangements as claimed in claim 1, is characterized by,

Above-mentioned fixed contact and above-mentioned fixing terminal are set to one or split.

17. contact arrangements as claimed in claim 1, is characterized by,

Above-mentioned travelling contact and above-mentioned movable contact are set to one or split.

18. 1 kinds of contact arrangements, is characterized by,

Possess:

Pair of permanent magnets, mutually sets across above-mentioned contact block relatively being set up in parallel on direction of above-mentioned travelling contact Put, mutually relative to each polarity in face identical；

Above-mentioned pair of permanent magnets, above-mentioned second yoke and above-mentioned a pair fixed contact, being set up in parallel of above-mentioned travelling contact On direction by a permanent magnet in above-mentioned pair of permanent magnets, a fixed contact in above-mentioned a pair fixed contact, on State another fixed contact in the second yoke, above-mentioned a pair fixed contact, another in above-mentioned pair of permanent magnets permanent Being arranged in order of Magnet,

19. contact arrangements as claimed in claim 18, is characterized by,

Respectively oppositely arrange with each end face of the above-mentioned movable contact on following direction and be connected between above-mentioned pair of permanent magnets A pair the 3rd yokes, above-mentioned direction be with above-mentioned travelling contact be set up in parallel direction and above-mentioned travelling contact and above-mentioned fixing Contact separate orthogonal direction, direction.

20. contact arrangements as described in claim 18 or 19, is characterized by,

Above-mentioned pair of permanent magnets is configured to, mutually relative to each be centrally located at link above-mentioned a pair fixed contact straight On the extended line of line.

21. contact arrangements as described in claim 18 or 19, is characterized by,

Above-mentioned drive block possesses: contact pressure spring, is pressed to fixed contact side by above-mentioned movable contact；Limiting mechanism, limits Above-mentioned movable contact is to the movement of above-mentioned fixed contact side；Movable axis, links this limiting mechanism；Electromagnet block, drive above-mentioned can Moving axis is so that above-mentioned travelling contact separate with above-mentioned fixed contact.

22. contact arrangements as claimed in claim 21, is characterized by,

Above-mentioned movable axis includes: axle portion, is movably inserted through on above-mentioned movable contact in the inserting hole formed；Abutting part, It is arranged at the one end in this axle portion, abuts with the one side of above-mentioned movable contact.

23. contact arrangements as claimed in claim 22, is characterized by,

Above-mentioned second yoke doubles as the abutting part of above-mentioned movable axis.

24. contact arrangements as claimed in claim 22, is characterized by,

Above-mentioned second yoke doubles as the abutting part of above-mentioned movable axis, and this movable axis forms as one.

25. contact arrangements as claimed in claim 21, is characterized by,

Above-mentioned limiting mechanism keeps above-mentioned second yoke, above-mentioned movable contact and above-mentioned contact pressure spring, by above-mentioned second Yoke limits the movement to above-mentioned fixed contact side of the above-mentioned movable contact.

26. contact arrangements as claimed in claim 18, is characterized by,

27. contact arrangements as claimed in claim 18, is characterized by,

28. contact arrangements as claimed in claim 18, is characterized by,

Above-mentioned second yoke is formed as tabular.

29. contact arrangements as claimed in claim 18, is characterized by,

At least any one is formed as tabular to above-mentioned first, second yoke.

30. contact arrangements as claimed in claim 18, is characterized by,

31. contact arrangements as claimed in claim 18, is characterized by,

Above-mentioned first, second yoke at least any one by the tabular basilar part relative with above-mentioned movable contact with from this basilar part A pair extended portion extended towards movable contact side, end, be shaped generally as cross section U-shaped.

32. contact arrangements as claimed in claim 30, is characterized by,

33. contact arrangements as claimed in claim 19, is characterized by,

Possess permanent magnet pieces, with above-mentioned pair of permanent magnets respectively relative to the polarity of first be set to relative forever The for a long time polarity heteropole in the face of Magnet, with a pair the 3rd yokes respectively relative to the polarity of second be set to and the pole of first Property heteropole, is configured between above-mentioned pair of permanent magnets.

34. contact arrangements as claimed in claim 21, is characterized by,

35. contact arrangements as claimed in claim 21, is characterized by,

Above-mentioned first yoke and the face contrary with the face that above-mentioned movable contact abuts on, formed and be embedded in above-mentioned contact pressure bullet Jut in one end of spring.

36. contact arrangements as claimed in claim 18, is characterized by,

37. contact arrangements as claimed in claim 18, is characterized by,