DE1464449A1 - Electrically operated contactor - Google Patents

Description

Electrically operated contactor

The invention relates to electrically operated contactor OQd, in particular a contactor that is used as Interrupter or chopper is known, end which is suitable »an electrical circuit in proportion high frequency and synchronous with a control change stream sa interrupt · For example, these devices are sam used for measurement and control purposes from very small electrical voltages or currents old used with a high degree of accuracy and reliability

The modern development of electronic devices, for example for projectiles and rockets, is bit strict

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gen requirements for devices of this type for modulating circuits coupled * A complete electromagnetic vibrator, which acts at least as a single-pole Uoschalterkontakt, occupies a volume of about 0.6 era (1/10 cubic lnoh) a _o In addition, the switch must be in Temperaturscfrwankungon of about * '-65 ° C to about 125 ⁰ C and maintain its reliability with extreme shock loads and vibration loads up to 30 times the acceleration due to gravity and at frequencies up to 2000 Hertz. _Interference voltages that are generated in the contacts must be very low The required complete electrostatic and electromagnetic isolation of the drive coil from the contacts must be ensured despite the required close proximity of the coil and the contacts due to the small space available.

Electromechanical choppers can be designed to that they resonate or not resonate with the working frequencies work. The resonance chopper can store considerable energy in its moving system when operating at or near the resonance frequency will. Venn the system operated exactly at the resonance frequency is the ratio of the total stored energy in the system to the energy that

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content or is discharged per work cycle, very much large and the operating characteristics, such as the Path relationships between the initial voltage and the Switching action, have turned out to be unstable «Any change in the drive frequency or on» ' operating voltage or temperature has an effect in significant changes in the operating mode. To the In order to stabilize properties, the resonance type chopper is usually designed to operate at a Frequency close to, but not working at, the resonance frequency and still benefit from the increased contact effect and the low demand for excitation energy makes use of this type of switch. In a conventional arrangement, the resonance point is selected to be slightly above the range of the operating frequencies and thereby a certain gain in the resulting Armature movement obtained during the storage of mechanical energy in the moving system the switch is prevented from becoming unstable work outside of the resonance vibrations

Of the greatest practical importance is the interference factor or the noise in the exit circuits, the main

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also through the olektxomDgnetißchö coupling auiac the contacts and the excitation coil will be night » The electrostatic coupling also plays a certain role. Ba in view of the immediate physical proximity of the parts, which is required by the compact design, the insulation problems pose a great difficulty · The solution to this Problems is an object of this invention «

According to the invention a compact contactor _t of no major interference voltages eraeugt, created This contactor according to the invention has a ferromagnetic shield and facilities within this shield "which form a magnetic circuit. These latter devices have ferromagnetic see poles, a coil for Eraeugung a variable, aagnetomotorischen force, devices for generating a permanent magnetic field, which magnetically with the ferromagnetic :! Poles coupled aind and a movable ferroraagnetic armature on _T which formed with the poles gaps through which the magnetic flux flows Resistance changed in each of the columns »Next are

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ORIGINAL

Contact devices are provided, which are offered by the armature. Invention age measure extended! "The polo extends into the coil, and" was essentially parallel to the magnetic axis of the same, and the parts of the ferromagnetic armature and the poles, tiio of these
Gaps are removed, forming gaps with the shield that have a low magnetic reluctance for
have the flow of forces, _s

The invention is illustrated by way of example using the figures
explains s

Figure 1 follows an electromagnetic chopper of the invention in elevation and partially in section »

FIG. 2 shows a section along the line 2-2 in FIG 1,

Figure 3 shows an end view along line 3 = 5 in Figure 1, with parts shown in section

FIG. 4 shows a perspective view of the device containing the armature and the poles of the device in FIG 1 embodiment shown in disassembled position «

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FIG. 5 shows a partial section, the dome section in FIG 2, but of a different embodiment according to the invention,

FIG. 6 shows a section through a further embodiment according to the invention »

FIG. 7 shows a section along the line 7-7 in FIG 6th

At the top, FIG. 8 shows a section 3 through another Embodiment according to the invention and

FIG. 9 shows a section along the line 9-9 in FIG

In Figures 1 to 4, a conventional socket 12 is shown, which carries a housing that consists of two sections consists ο a lower section 11, the hermetically yib poems t, and an upper portion 10, in the dom preferably after assembly, the components are thereby ssen attached so that they are encased in an ear or binder. Slide sections 10 and 11 of the housing are made of a ferromagnetic material, while the mount 12 is made of any suitable material that is tightly bonded to the housing

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can be _o The base can be made of non-metallic ;! metallic material including ferrous boronate or non-ferromagnetic material. In a orfindungsgemäßen Kontektgeber 12, the base preferably made of non-magnetic hole steel "The lower edge dos lower housing portion 11 is rolled over the tape to the socket 12 and a vacuum-tight to the socket verbötet _o The upper edge of the housing portion 11 folded iat, on the one hand the connection to the to facilitate the upper housing section 10 and, on the other hand, to enable the tight use of a partition plate 21 "

In the center of the lower compartment or section 10 is a rectangular permanent magnet 14 which extends long the vertical axis 3es contactor, As shown in FIGS. 1 and 2, this magnet consists made of a magnetic material with a large coercive force »For this purpose, we will see Ceramic magnetic materials will be particularly useful because of the presence of such materials as a result Their high electrical resistance and their low additional permeability are only insignificant to the inductance of the drive coil wound around the magnet · Bs was also found to be the alloy , "Alnico" (trademark of the General Electric Company,

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Scbonoctiaily, I \ ^T aw Ycvk) nit euteni Success wondet c! A ax um: in gam; little; vt: ße the iünciul ~ .tiyität azi Enlarged coil *. Boron magnet 14 is aligned in a direction perpendicular to the vertical axis.

On both sides of the H & gaeten 14 are ferromagnetic poles 23 with high permeability and D-shaped cross-section so arranged © 1i _? that the flat seiton rest on the thorn magnet 14, as is the most obvious from the figure ? You can see ο The poles 28 extend over the entire length of the opposite sides of the garage ο © 3 Fclöicagneten 14 and through a separating plate 21 made of niontmc-ignetiachem v soldered and protrude beyond this plate.

The magnet 14 and the poles 28 are closely surrounded by a molded part 18 on which an Erroger coil 16 is wound, which is located in the housing compartment 10. In the two spaces, which are formed on opposite sides of the magnet 14 and the inner surface of the molded part 18, there are two mutually opposite terminals or poles 15 which are connected to the coil 16 by connection lines and terminals 15 are from the permanent one Magnet separated by a layer of electrically insulating material 19 o An

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the Anochlußklemiiisri oind Isolierringo 1? attached, ά.Ίο prevent tliü clods from entering into an oil arrangement gesαhoben werdon that they with the plate 21 in contact

The outer housing part 10 rests against the coil 16 and is in good thermal contact with it. This enables optimal transport of the Joul ¹ heat from the windings of the coil to the outer surface of the housing, whereby the "heat" can easily be dissipated . It has also been observed that a further path for an arm current is formed by the poles 28 and the plate 21, which are in a good heat-conducting connection with the outer housing _o That the poles are soldered to the Separation plate creates a good »thermal connection between these parts and helps prevent a temperature drop in the arrangement. The filling of the upper housing compartment with a sealing compound after the arrangement has been put together also serves to improve heat conduction and also reinforces the mechanical construction. With the control of the Viärmegefällec these measures will u _o a. prevents this gradient from influencing the contact surfaces (of which the handle will still be) ^ that thermoelectric voltages

? produced; .e: <'-ϊί, ^ci: .r> - ^ .tiuschon "in AESN kreison aur result · h" uarvJULiocMT ?! imrJ un ^ ^ owollto olelruromotoriüoh LiCAF o <odov · one? "

The under © closed © space in the Gohäuseabteil 11 closes all moving parts «contact © uaw» oin and contains voi ^ sugawelsa no organic, insulating materials for i ^ gg filling with Gac. _} independent of do: -? Upper Konabniktioiio The BOssimg '12 iat in übliohor V.'aiae ausfjcbildat and bo3toht from Motall, dUX ¹ Ch the viae symmetrically arranged by Koctalcfestlfto 25,25 and 26,26 are tightly obstructed »oilä3 © r 12A (see figure Q) jode: =? of the contact pins opposite the fit 12 * Incen in d ©:;. ' Chamber are the two contact pins 2. ^r> with Xontakton JO €? Ί-ϋΐ; connected, the alo courses cylinder at? 3 EdcsJ.ir.etnll cnegebildot are, which on the contact si; if te ßn.f; jescb * 'oi3t or soldered aind.

The Kontaktstiftvi exist vorrsugswoino eun According to the material, the reason for this is explained in more detail below are explained «brittle metals, wf.e molybdenum and tungsten, 3ind for this purpose unsuitable Bai dor dargeatolltou Ouch "

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The contact pins 25 are made in the form of a guide and are made of full acetal material from susthoniticohem koi-voaioniibestänäigeia steel, with which contacts 30, which consist of precious metal, can easily be connected, for example by welding, among other things such a construction has the advantage that thermoelectric 'potentials below a atörendea "noise" can help in the electric Ausgangskreio, werdeη far "reduces possible _e

The contact pins 26 in the socket 12 are used for fastening columns. In them there are holes $ 1 that are used to attach the ropes, viclcha ctie girders or Holders for the Ankorsyetem form ο Let the arrangement in one piece in Figure 4 with the parts of the anchor self portrayed. Intermediate discs 55 and 36 are used as a spacer to awoi double-bladed feathers 42 and 42A, which are made of thin resilient metal bc-athen Hold in place. Each of springs 42 and 42A has a Baar elongated sheets 43 with Tabs 49 at one end of these sheets and a mounting plate at the other end of the same enclose an angle. The leaves 43 of the spring 42 are relative connected to the leaves of the spring 42A »In the fastening plates of the springs 42 and 42A are

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rather 55 or 56 respectively. Have the tabs 49 Slots 48 so that these laeches can be arranged so that they can be adjusted.

An anchor 5O ₉ of the circular of three plates 51 * 51A and 47 consists, is connected to the mounting plates of the springs 42 and 42A so that the anchor plates 51 and 51A comes to lie under the same on this Befeatigungsplatten and the plate 47th A cross-shaped part 52 made of ferromagnetic !!! Material with a relatively high permeability and low coercive force is soldered or welded onto the surface of the plate 51, so that this cross-shaped part is directed towards the poles 28. The arms 52A of the cross-shaped part, which are located next to the poles 28, are made weaker than the other two arms of this cross-shaped part and bind arranged at a small distance from the plate 51 so that they can be bent to adjust the air gaps between these arms and the poles BU allow. The plates 51 and 51A are stacked one on top of the other and also made of ferromagnetic material. The anchor plate 47, which consists of an electrical Strpm conductive and preferably non-magnetic material has ^ü chlitie 47A through ₉

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which the blades 43 extend ο In the anchor plates 47 'and 51 5ia are holes 57 and 38 are provided which are aged to bring the holes 56 and 55 for Deokung ". Rivets 54 are passed through all of these holes in order to clamp the fastening plates of the springs firmly between the anchor plates 47 and 5IA It can be seen o It is emphasized that the resilient system has a center of rotation at one side, which essentially coincides with the center of gravity of the moving system.

The lower anchor plate 47 has a reinforced central part, which has a hub 46 with a circular Recess 45 forms «The hub ends in a thin annular flange 46A. The flange 46A is elliptical Form, whose larger Durohmesser appears in Figure 2 and whose smaller diameter in Figure 1 appears below of the flange 46A, the hub 46 ends in a centrally arranged rivet 37 ″ through which the contact plate 44 and a balance weight 41A are connected to the armature and with this the movable part of the device form o

In this embodiment according to the invention, which for

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If the operation in the area close to the Reaonans is intended, the massive anchor system preferably has a balancing force which is formed by the counterweight 41, whereby the center of gravity of the system is essentially aligned with the center of rotation, which is located below the plate 47 and above the spacer washers 35 The counterweight 41 is a rectangular block, the size and arrangement of which is chosen so that it meets the dynamic requirements of the system that has just been cut

The electrical contact between the anchor and the fe ~ Most contacts 30 is made via the contact plate 44, which has the shape of a long leaf spring and which is held midway between the flange 46A and the counterweight 41 «, the contact plate 44 extends in the radial direction outward over the flange 46A and the counterweight 41 hipaus to an undesired Avoid impairment of the projecting parts of the contact spring 44 ο Under certain conditions it is possible to limit the length of the contact path of the spring arms by following the sides of the flange 46A bent downwards «.

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A reverse, sohelecformige shield 20 aue forromagnetlaohem material is placed over the socket 12 in a Aueeparang, which is calibrated in the interior of the housing "sheath 11, which simultaneously serves this shield in place to hold _o Above 1st the sohalenformige shield 20 cut out to form a rectangular opening 20A through which the springs 43 are routed. The shield 20 is suitably formed from two parts which, after they have been assembled around the armature arrangement, are welded or soldered to one another

The outer ferromagnetic shell part 11 was used as a housing for the contact-making and moving parts of the Systems denotes · Br also serves as an inference for the power flow, as well as a radiation shield, so that the coil flux is not effective beyond the housing will.

Other features of the design and the mode of operation of the described device according to the invention are of particular importance for the compact design of the devices, so that maximum efficiency is achieved with minimum space requirements.

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In the embodiment shown in Figures 1 to 4, the fixed magnetic structure has a circular cross-section This construction is in its own compartment, which, if desired, can be sealed separately ο the poles are between ' the permanently polarizing field and the exciting field are used and form the path of the magnetic for both fields River to the anchor The room in which the anchor is located is also a separate room and is separate sealed, preferably hermetically sealed, since all organic insulation materials are avoided. den can · The poles extend into this latter space and thus form with the Anchor and the walls of the housing a closed Way for the flow of power.

In operation, the terminals 15 of the coil 16 connected to a suitable AC power source · The fixed contacts 30 can be connected to a low voltage source which is to be measured or controlled, while the movable contact 44 via the terminals 26 with can be connected to a utility circuit. The anchor 50 vibrates at a frequency that corresponds to the frequency of the alternating current around a horizontal axis as a result of it Storage on flexible parts 42 and 42A. Therefore, the contact spring 44 is alternately in contact with each other

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and brought to the other of the fixed contacts 30.

It is essential that the movable anchor system as a whole as Seheibenkons $ ruktlon 50 can be regarded. It It is emphasized that the cross shape of the tongue 52 was chosen solely for reasons of adjustability, as has already been mentioned · The armature is arranged at right angles to the coil axis. It works with the field poles to form two separate air gaps, in which the magnetic field is directed parallel to the axis of the coil air gap connected in series flows is passed through the armature. The armature extends in the radial direction to such an extent that it forms a narrow air gap with the outer one also made of ferromagnetic material forms housing, what a Rückeohluß for the coil flow with low reluctance is obtained «The Poles also end in air gaps that are at the top As shown in Figure 3, the deodorant made of ferromagnetic material is preferably not completely closed around a rolled edge to leave, with the exception of one or two tabs 27 ο These tabs can be used to adjust the magnetic resistance by moving them into the flux be inserted, a tab with a dome corresponding

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chaad pole 28 is adjustably related. This results in an electromagnetic equalization of the system according to aera. Assembling allows and when the balance has been made, the setting can be fixed by filling the open spaces of the upper part of the assembly with a sealing compound made of plastic or a suitable resin

A major advantage of the contactor according to the invention is the ease with which the 3 adjustments can be made during operation0 First, as mentioned above, the arms 52A of the cross-shaped file 52 can be bent slightly in order to block the air gaps between the armature and the poles _β Either one or beiäo of the springs 42 and 42A can be prepared by the elongated design of the Sohlitse are moved to the flaps 49 48, i ^ oduroh a displacement of the armature 50 is possible ο After this setting, the parts are secured by at 49A ( Figure 2) soldered

J.T

»The electrical connection to the contact spring 44 is established either by one or both contact pins 26 via the springs 42 and 42A and the anchor plate 47. In addition, as mentioned above, a dis ~ symmetry can be introduced into the path of the magnetic flux by pulling the tabs 2? (flee figure 3), the aioh in the cover of the upper housing part a 10 is

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to be set accordingly. The interspace can get through within a kloinen eareioh Squeezing the connecting pins can be adjusted with crimping pliers, as shown at 15A in Figure 2 o As a result becomes an extension of the part between the version and the contacts and the gap between the fixed contacts and the movable contacts is decreased.

In FIG. 5, a further embodiment according to the invention is shown, which has a movable armature 150 which extends transversely to the tertiary axis are also the contacts within the hermetically sealed housing with the socket 112, the separating plate 121 and the cylindrical housing part 111 provided - · Above the plate 121 of this embodiment according to the invention, the same is formed exactly as was described in connection with Figures 1 to 4. From this is the reason why this part of the device is not shown in FIG.

The movable armature 150 has a ferromagnetic one outer part 151, which, as shown, as one on the Upside down shell is formed, in which there is a plate 15IA and a clamping plate 1 * 7 · The plates are held together by rivets 15 *. The plate 15IA

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is provided if the weight of the movable system has been increased and thus an influence is to be exerted on the resonance properties of the system Preferably, the plate I5IA is from the electrical Current made in high HaQe conductive metal to avoid noise in the output parts of the circuit by reducing the potentials passed through the eddy currents in the armature are conditioned o The flexible bearing springs 14-2 and 142A are similar to the springs 4-2 and 42A. These springs are placed between plates I5IA and 14-7, as described for the previous one Clamped embodiment ■> The whole construction is held together by rivets 154- «The outer ferromagnetic part 151 is exposed to the influence of the neighboring poles 26, as mentioned in connection with the first described embodiment, exposed · This part I5I possesses a circular apron that holds the other ropes of the anchor covered. The part iiiA of the wall of the housing 111 has next to the skirt-shaped anchor part a curved profile, where the center of curvature both the curvature of the skirt profile and the curvature of the profile of said housing wall part the axis of rotation of the moving parts. In this way the path of the magnetic flux becomes transverse to the air gap that is formed between these parts is reduced to a minimum and the length of this path

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how the effective gap area can be kept constant as the armature 150 moves.

Protrudes from the clamping plate 147 by in the middle Unton a lug 146 out, preferably with the clamping plate in one piece is _o An dor downwardly facing surface of the boss 146 are a pair of parallel bars 153 against which an elongated contact spring 144 by a Counterweight 141 is pressed, which is fastened by a rivet 137 extending in the axial direction. The contact of the webs on both sides of the contact spring 144 serves to precisely determine the points of curvature of the two cantilevered resilient arms of the contact spring 144 o

The contact pins 126 carry the flexible parts 142 and 142A of the iinker construction, as in the embodiment Όπα described there. Δη the contact pin © 125 are the

Contacts 130 welded on, which are made of precious metal are. As shown, these contacts consist of two U-shaped parts 130A and I30B. The parts Ι30Δ are located inside the parts 130B and their free ends are resilient with the two ends of the movable contact 144 in engagement ο The free ends of the larger parts 1? 0B

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are arranged so that they align with the edge of the plate can come into engagement, welono.Platte the base dos Anchor forms * and thereby dl © pivoting of the anchor limit"

An important feature is the invention is to facilitate the significant adjustments during dos assembling the device au _o The adjustment of the contact gap was already described ο you can by crimping one or both pins, happening within the housing, wi © is indicated by the deformed portion 113 «. Another possible setting is to bend one or more of the contact pins 125, as shown in FIG Sbene that through boide eighth that through

ο the fixed bzv /. movable contacts are determined ρ / open In this way the axis B of one of the contact pins © 125 deviates from the vertical axis © A after bending. The effect of such a shift in the fixed contact is to change the effective spring cone constant of the corresponding cantilever arm of the movable contact spring 144, whereby the effects of the sswei suaaiamsi »- working contact pairs can be balanced «,

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85-

A further adjustable device is provided for a movement of the anchor I50 beyond a rippled hatred ", especially in resonance mode. The protrusions of the file 130B extend onto the anchor plate

147 see below, which is cylindrical next to each of the parts I30B is curved around the centers of curvature, which correspond to the speaking points match to which the pins 125 be bent to offset their axes »

In yet another Ausungaform according to the invention, which is shown in Figures 6 and 7, the The construction above the partition plate 21 is preferably the same as in connection with FIGS. 1 and 2 “This part is therefore not shown in FIG. 6 either.

The housing under the plate 21 is preferably made of two ferromagnetic parts 211 and 222, which for one Hermetic sealing are suitable. The part 211 is shell-shaped and at its open end completed by a socket 212, duroh the contact pins 225 and 226 are inserted tightly and electrically insulated ο these contact pins are for the connection to the external circuits determined · The housing part 222 has the shape of a spacer xing, which is attached to a » End hermetically sealed with the lower housing part 211

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The other end of the part 222 is hermetically sealed by the partition plate 21 through which the poles 28 extend »In this way, the housing part 222 forms together with the partition plate 21 and the end wall of the Housing part 211 has a chamber 213 ″ which communicates with chamber 223 which is surrounded by part 211. Communication takes place through a small central opening 224 which is located in the end wall of the housing part 211 _a

The anchor consists of a flat plate 204- which is inserted in the generally circular in shape. Recesses 204A are provided on both sides of this plate.

204 see which are obtained by cutting out the plate / « Bearings 206 made of flat elastic metal are each connected to one end by rivets 207 on the anchor plate next to each other one of the recesses 204A is attached and extends perpendicular to a diameter of the anchor plate 204 in the vicinity of these corresponding recesses 204A »Mit the other ends of the bearing blades 206 are respectively by a rivet 205A and a spacer 205 with The upper surface of the housing part 211 is connected to the anchor plate 204 by a sungenfSroiger part 208 out, which goes down through the narrow opening

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224 extends into the space from the lower housing » part 211 is surrounded. This tongue can be beneficial from the electric current non-conductive material, such as ζ.Bo a ceramic material, consistο the tongue holds with its lower end a contact 210, which usually consists of a noble metal, suitable for forming electrical contacts. The contact 210 is on it

Tongue by means of a cement or soldering to a

209

Interlayer / bonded on tongue 208. The electrical connection between the contact pin 226 and the contact 210 is usually through a Wire 216 made, which can be double-looped, to exert a minimum section modulus on the moving anchor system. The tongue 208 can be connected to the anchor plate by übliojho devices, such as when a Tongue 208 made of ceramic * material is used by Solder a «metallized veil of the surface of the · ceramic body made »;

The fixed contacts are adjacent to do "movable armature contact 210 shown in both side thereof" Each ¹ 'of the fixed contacts has, as Io figure 6, a holder member 215, the pin directly on a contact · attached 225th On this holder part, for example, a reed 214A is a resilient contact

909813/0964 bad original

part 214 attached devices similar to those in the first-described embodiments, however are not shown in detail, can be provided in order to adjust the contact distance, the resonance of the moving system and the like.

In this embodiment according to the invention, the Elements of the magnetic circuit effective from the Eleraen » ten of the inner electrical circuit, because the individual elements are arranged in separate housing parts ο An advantage of this embodiment is that a minimal noise is obtained in the output circuits without extremely small air gaps in the magnetic Circle between the armature and the adjacent housing walls as in the above-described embodiments required are.

Significant advantages are achieved with an according to the invention Device also obtained if, as will be described below with reference to FIGS. 8 and 9, the movable armature extends into a transverse gap formed by opposite ends of the poles, In the embodiment shown in FIGS. 8 and 9 form is the construction over the hermetically sealed killed housing preferably the same as in the context was described with Figures 1 and 2, with the exception

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87 =

that a rectangular and not a circular cross-section is chosen. In this embodiment, the housing 311 generally corresponds to the housing that by the partition plate 21 and the housing part 11, the device shown in Figure 1 is formed. The housing is in the same way as the last-mentioned housing 311 duroh the version 312, which here again is rectangular is, completed «Through this socket the leveling pins 325 and 326 are electrically insulated and inserted tightly. In the present case, the housing 311 consists of non-magnetic material, such as 2 "B. made of glass or metal, through which the poles 28 are inserted tightly. Of the housing itself is of a ferromagnetic shield or surrounded by a ferromagnetic housing 310, including Plata, see below save, both the housing 311 and the shield 310 are generally rectangular in cross-section. Within the housing 311, the poles 28 terminate in end pieces 328 which are bent inwardly to form a transverse gap 329 through the free end of armature 350 ο In fact, each pole end 326 forms a gap 329 with one side of the armature In contrast to the columns of the embodiments described so far, the columns are initially formed in this export on both sides of the anchor.

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The armature 350 has pairs of resilient metallic parts 351 and 552 made of ferromagnetic material, which are assembled in a Y-shaped arrangement and turned upside down, so that the extensions 351A and 352A of these parts also go up into the gap 329 extend into it. The free ends of the anchor extensions 551A and 552A are welded together at the top ο The middle parts 351 and 352 of the anchor are forked apart so that they are in a pair of downwardly inclined arms 353 bsw. The arms 353 extend downward to and along the fit 3 ^ 2, with which they are connected to the sides of the contact pins 325 by welding, soldering or cementing if the socket 312 is made of glass are _o In addition, each 353 a relatively large-area portion 353A, which extends along the inner surface of the housing 311 in order in this way a minimum magnetic resistance of the magnetic return path to the outer housing 310 equal to obtained in manner, which is owned by the arms arms 354 extending at a distance from each other at the bottom are connected to the fitting 312 o These arms also continue in wide parts 354A, which are arranged near the outer housing 310, separated by the wall of the housing «

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Sas Drehzentrua the armature is an axis 355 at the intersection of the planes in which the obliquely inclined arms _β are 353 and 354, the center of gravity of the moving system is also in this axis 355 · Bin arm 356 from nichti & agnetischen metallic material is arranged such that With its upper end it engages the lower parts of the legs 351 and 352 of the armature This arm is welded to the legs by welds running parallel to the axis 355, so that a solid unit is formed from the three parts o The contact part 357 is with the Ana 356 firmly connected «The insulation 358 provides the necessary electrical insulation between the arm 356 and the contact 357.

The fixed contacts are next to contact 357 of the ver-3c £ wexicable Arm and arranged on both sides of the same * <7 | which, as shown, has an elder part 359 »which is attached directly to a contact pin 325 and on which a resilient contact part 360 is fixedly arranged is" .,-.:,.

The poles are at their end portions 328 relatively close to the contacts and the contact pins carrying the output current 325 “Therefore, a

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Shielding 351 made of ferromagnetic material so arranged that this shielding extends transversely over the entire housing 311 between the pole ends 328 and the contacts 360 The shielding 361 has large downwardly projecting tabs 362, which are close to the inner surface of the housing 311 extend to the outer housing also provided in this Weiee a minimum magnetic resistance for the reflux of the magnetic force flow iBU 310 to ensure _o the shield 361 is provided with an elongated central slot 363 through which the anchor assembly 350, he · = "stretched

The arrangement and setting of this implementation forum can be derived from the description of the? 8, the ferromagnetic shield 310 is closed at its upper end and part of the alignment of the tabs 27 (FIGS. 1 and 2) is a ferromagnetic plate 365 slidably arranged on the inside of the housing 310 opposite the ends of the poles 23. The plate 365 is laterally advanced relative to the ends of the poles 28 to a certain value for the relative magnetic resistance between the Htaäon of the poles 23 tnid eiom ferromagnetic housing 3 ''Oadjust' if the correct one

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Position is found, the plate 365 is preferably attached by welding - As in the case of adjusting the tabs 27, this adjustment is carried out in order to achieve a compensation disymmetry at this end generate, which on the other hand has the effect that the contact operation is symmetrical »

An essential advantage of the embodiment described in FIGS. 8 and 9 'is that the armature arrangement together with the ferromagnetic jacket of the housing forms the magnetic return path in ideal Welse.

The upside down T cross section anchor 350 facilitates the creation of a statically balanced anchor with a rigid controlled center or a rigid axis around which the moving part rotates, which can be extremely light. The back folded arms 353A and 354A result in a large-area magnetic coupling with the outer ferromagnetic jacket 310, as is necessary for the connection between the Anchor and the source of the magnetic force flux is desired ο This is important to a minimum inside the device induced disturbances in contact with external circuits, especially in the extreme small choppers as described above

009813/0964

The fork-shaped anchor parts 35 * 1 and 352 make a significant contribution to obtaining this compact construction. On the other hand, there is even better magnetic shielding the contact arrangement obtained when the parts 351 and 352 are not divided into two parts, but from one solid pieces, with the armature being uninterrupted between the contacts and the sources of the magnetic Flux of force extends, which together with the outer magnetic shielding creates a perfect magnetic Shielding for the contacts is obtained ο

The devices described can within the scope of the invention Measures can be modified in various ways »For example, it can be significant be to reduce the overall weight of the device <> The outer ferromagnetic jacket, such as the housing 3 * 10, can be reduced in weight by using it as a U-shaped strip placed upside down is formed, which is arranged in alignment with the poles 28 » The anchor arms 353A and 354-A can provide magnetic shielding take over. The calibration or adjustment plate 365 can be used in the same way as shown in FIG is to be attached to the jacket 310.

BATH ORIGINAL

Claims (1)

Pa ta nt a η s ρ r ü cha jElectrically operated contactor with a ferromag en Netic partition and establishment / within this Shielding, which form an iron magnetic circuit, these devices consisting of ferromagnetic poles, a coil for generating a variable, magnetomotive force, devices for generating a permanent magnetic field which are magnetically linked to the ferromagnetic !! Poles are coupled, and aas a movable ferromagnetic armature exist, which forms with these poles of the flux of force flowing through columns, wherein the armature is movably mounted relative to these poles so that a movement of this armature relative to the poles the relative magnetic resistance in the columns changes, and wherein contact devices actuated by the armature. are, characterized in that the ferromagnetic »poles screen extend into the coil running essentially parallel to its axis and that parts of the ferromagnetic armature and the poles which are arranged away from the said columns form further gaps with the shielding have a low magnetic resistance _o 009813/0964 ⁸ ^ ORIGINAL 2ο contactor according to claim Ί, characterized in that that the devices for generating the permanent magnetic field are arranged in the coil between the poles are. 5β contactor according to claim 1 or 2, characterized in that that the armature is entirely outside the coil. * o Contactor according to one of the preceding claims, characterized by an electrostatic shield which is arranged within the ferromagnetic shield and which is arranged between the armature on the one hand and the coil and the devices for generating the permanent magnetic field on the other, the ferromagnetic poles passing through extend this electrostatic shield through _o 5 · contactor according to claim 4, characterized in that the electrostatic shield is part of a . forms tight housing in which the armature and the contact devices are arranged, and that the poles are passed tightly through the electrostatic shielding ο Contact maker according to one of the preceding claims, gekennaeiob.net through facilities to the relative • * 009813 / 096Λ BATH ORIGINAL . adjust the magnetic resistance between the parts remote from the poles and the magnetic shield. 7 «contact giver according to one of the preceding claims, characterized in that the devices for generating the permanent magnetic field a magnetic one Have axis perpendicular to the magnetic axis the coil is oriented. Contactor according to one of claims 5 »6 or 7», characterized by devices which the armature cn a Rotatably mount the axis, which extends substantially parallel to the shield «. 9 · Contactor according to one of claims 4 to 8, characterized characterized in that the shield is a wall on the electrically conductive material. 10 · contactor _t according to claim 9 »characterized in that the ferro-magnetic shield has a substantially cylindrical shape, that the electrical current conducting wall is circular cylindrical, that the armature is substantially annular and extends transversely adjacent and substantially parallel to the wall and extends to the sealed housing so that _; let its periphery be arranged at a small distance from the iiniereji wall of the far-magnetic shielding BATH 11. Kontaktgebsr according to claim 10, characterized in that that the anchor has a side that the wall from is facing ferromagnetic material and that he is a non-magnetic, electrically conductive, opposing Side. 12o contactor according to claim 11, characterized in that that the contact devices close to the other side of the armature are arranged, and that they have iron first and a second contact, the first contact is slidably arranged to come into connection with the second contact when the armature is in the corresponding one Sighting is twisted ο 13 · Contact maker according to one of the preceding claims, characterized in that the armature has several ferromagnetic Parts and a non-magnetic, electrically conductive part, all stacked on top of one another and are connected to one another, the non-magnetic part against the contact device and one of the ferroaagnetic parts directed against this wall is. 14. Contactor according to claim 13 «characterized in that that the anchor is carried by a pair of resilient holders, each with one end bit of the anchor and 009813/0964 BATH ORIGINAL with the other brew it is connected to a base that is at the end of the shield ο Contact maker according to Claims 12 and 15, characterized in that the first contact is elongated and with the Armature is coupled and that the second contact consists of a pair of fixed contacts »those at the ends of parts guided by the base or the socket are attached, these parts being guided through the base Parts or contact pins extend into the sealed housing next to the elongated contact » 16ο contactor according to claim 15 »characterized by that the contacts made by the Hindu version .Easily deformable, so that they are crushed are extendable in order to move the fixed contacts arranged thereon towards the elongated contact and that a second pair of parts sealingly passed through the socket is provided which is connected to the is connected to resilient bearings » 17 »Contactor according to one of claims 13 to 16, characterized characterized in that the ferromagnetic part is cross-shaped and a pair of them in the linear direction er * has stretching arms compared to the rest Poor are weaker, and that each of the 9Q9813 / 0964 Poles arranged at a small distance from one in the less developed arms 13tο 18o contactor according to © inem of claims 1 to 10, gokenn- ' Aeiehnet by a bowl-shaped magnetic shield in the tight Gehäurs® on one side of the anchor in the immediate vicinity of the contact facilities, the one opening in the middle of the shell base, which extends against <? 3n anchor, by means of the connected to the anchor through this opening extend therethrough and support a movable contact in the cup-shaped shield, through a pair of fixed contacts, which are provided in the vicinity of the movable contact, and by resilient executions, who store the anchor relative to the poles', 19e contactor according to one of claims 6 to 13, characterized characterized in that the means for adjusting the relative magnetic reluctance are deformable parts on the ferromagnetic shield, one of which is placed close to the poles 20 · Contact maker according to one of Claims 1 to 7, characterized in that the ferromagnetic poles are on opposite sides End sides of the anchor to form gaps with them o 809813/0964 BATH ORIGINAL 21 · Contact maker according to claim 20, characterized in that that the armature has ferromagnetic parts »which diverge from one another and are more closely magnetic Extend coupling length to the ferromagnetic shield. 22 · Contactor according to claim 20 or 21, characterized in that that the armature is made of ferromagnetic material and has a cross section that corresponds to the one on the Head posed Y corresponds, has that one leg of the anchor extends between the BoIe and the the other two legs are arranged in close magnetic coupling to the ferromagnetic shield " 23 »Contactor according to one of claims 20 to 22, characterized by a base or socket that is firmly HdLt the ferromagnetic shield, whereby two legs of the armature are trimmed by this base 24. Contact maker according to claim 22 or 23, characterized by a contact holder made of non-magnetic material, that is connected to the arm of the armature that extends between the poles, and that between the two Another anchor leg is arranged, and by a Pair of spaced contacts between which the contact is made of non-marnetic material is arranged ο 909813/0964 ο · KoafcafccgebeE xmch one of £? isprüche 2C to 24, characterized dur-cli a magnetic shield _$ oils with the x'erromagnet laughing shield magnetically closely coupled and extending transversely in the sealed casing, and has an opening j wherein the anchor on the side of the magnetic shield remote from the coil is mounted in the sealed housing and the poles extend tightly through the wall in the housing part on the other side of the magnetic retainer and the center leg of the armature through the opening in the shield swischan die Polenden is led * 26o contactor according to one of claims 20 to 25 »insofar as these claims depend on claims, characterized in that the adjusting devices have an independent plate which is held by the shield and can be changed in position relative to the poles _{or the like} 2? O contactor according to one of claims 1 to 16, characterized characterized in that d © r anchor is shell-shaped and that the shield next to the outer surface of the Anchor © has a curvature so that it extends substantially parallel to the periphery of the anchor, if this is swiveled relative to the poles * 909813/0964 BATH ORIGINAL