EP0691030B1 - Polarized electromagnetic relay - Google Patents

Polarized electromagnetic relay Download PDF

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Publication number
EP0691030B1
EP0691030B1 EP94910337A EP94910337A EP0691030B1 EP 0691030 B1 EP0691030 B1 EP 0691030B1 EP 94910337 A EP94910337 A EP 94910337A EP 94910337 A EP94910337 A EP 94910337A EP 0691030 B1 EP0691030 B1 EP 0691030B1
Authority
EP
European Patent Office
Prior art keywords
bearing
armature
base
strips
supports
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP94910337A
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German (de)
French (fr)
Other versions
EP0691030A1 (en
Inventor
Heinz Stadler
Michael Dittmann
Herbert Mitschik
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
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Filing date
Publication date
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Publication of EP0691030A1 publication Critical patent/EP0691030A1/en
Application granted granted Critical
Publication of EP0691030B1 publication Critical patent/EP0691030B1/en
Anticipated expiration legal-status Critical
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H51/00—Electromagnetic relays
    • H01H51/22—Polarised relays
    • H01H51/2272—Polarised relays comprising rockable armature, rocking movement around central axis parallel to the main plane of the armature
    • H01H51/2281—Contacts rigidly combined with armature
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H11/00—Apparatus or processes specially adapted for the manufacture of electric switches
    • H01H2011/0087—Welding switch parts by use of a laser beam
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H49/00—Apparatus or processes specially adapted to the manufacture of relays or parts thereof

Definitions

  • the invention also relates to a method for producing such a relay.
  • a relay of the type described above is known for example from EP 0 423 834 A2.
  • the various assemblies i.e. the base with the fixed contact elements, the armature with the movable ones Contact elements and the coil assembly are arranged one above the other in a layered construction, which leads to a summation of the manufacturing tolerances of the individual parts.
  • the armature is fastened by means of bearing elements, which are fastened in the form of torsion bars and fastening arms lying parallel to the base plane, on support surfaces also lying parallel to the base plane.
  • the distances between the fixed contact elements and the movable contact elements connected to the armature are thus predetermined by the manufacture of the individual parts. This means that, on the one hand, the individual parts have to be manufactured with very little tolerance and thus are expensive, but that the remaining tolerances still add up during assembly. Subsequent adjustment of the contact spacing is therefore unavoidable and is also provided in the known relay by bending the fastening tabs.
  • the aim of the present invention is to construct a relay of the type mentioned at the outset in such a way and to specify a manufacturing or assembly method for this that the tolerances of the individual parts have no influence on the contact spacings. Regardless of the accuracy of the individual parts, the movable and the fixed contact elements of the relay should be able to be mounted in the correct position relative to one another, so that subsequent adjustment is no longer necessary.
  • this goal is achieved in a relay of the type mentioned at the outset in that the bearing elements are designed as flat bearing strips which extend at least with one fastening section perpendicular to the base plane and in that the bearing supports form vertical contact surfaces against which the fastening sections of the bearing belts lie flat, and are attached in an infinitely adjustable height position.
  • the previous layer construction is thus abandoned, and the connection between The moving parts and the fixed base take place in connection planes which run perpendicular to the base plane and thus in the direction of the switching movement.
  • the two bearing strips each extend with an elastic section next to the armature such that the tangential plane at each point of this section is parallel to the axis of rotation of the armature, so that the elastic section is practically only subjected to bending during the armature movement.
  • the bearing strips are each embedded in lateral extensions of the insulating material carrier in such a way that they emerge from it in a direction parallel to the longitudinal direction of the armature and are bent in a direction perpendicular to the base plane and are fastened to the parallel mounting tabs of the bearing supports.
  • the two bearing strips preferably extend in a common direction perpendicular to the longitudinal axis of the anchor in such a way that they are subjected to simple bending when the anchor moves. If the bearing strips also serve as a power supply to the movable contact elements, then they are each connected to at least one of these movable contact elements, preferably in one piece, while the bearing supports are in turn connected to connection elements in the base.
  • the end section of the respective bearing band is clamped between the associated bearing support and an opposing clamping plate, which defines with one end edge a clamping point for the bearing band in front of its fastening point.
  • the clamping plate can by a Be formed in a U-shaped bent end portion of the bearing support, which engages around the end portion of the bearing band at its end edge or laterally.
  • the bending section between the actual bearing support and the clamping plate can be weakened in cross section, for example by embossing to reduce the thickness and / or lateral incisions to reduce the width.
  • the clamping plate it is also possible for the clamping plate to be part of a U-shaped clamp which is placed on the free ends of the bearing support and the bearing band.
  • the bearing band attached to it is clamped between the end edge of this clamping plate and the actual bearing support, so that this clamping point also forms the bending point for the respective bearing band during the anchor movement.
  • the actual fastening point which is preferably designed as a welding point, is thus completely relieved of the movement forces.
  • Another way to relieve the mounting point which is usually a spot weld, may be that the bearing band is arranged with the elastic section between the anchor and the bearing support and with an additional attachment section at the end or laterally formed on the bearing support a side of the bearing support facing away from the elastic section is attached. In this case, an edge of the bearing support lies between the welding point and the elastic section, so that the fastening point is again relieved.
  • the permanent magnet arrangement is preferably formed by a rod-shaped permanent magnet which is arranged parallel to the coil axis below the coil and at the ends poles of the same name and a pole of the same name in the middle.
  • the bearing strips are first pre-fixed after the adjustment of the contact distance by a welding spot on the bearing support, preferably by a laser welding point on the end edge of the bearing strap, and then an end section of the bearing support is used to form a clamping plate U -shaped over an end edge of the bearing band, the adjacent sections of the bearing support, the bearing band and the clamping plate are then welded together.
  • a welding spot is expediently generated using a laser welding process or a similar spot welding process in the edge region of the bearing belts and the bearing supports or clamping plates.
  • the relay shown in the drawing has a base 1 on which a contact arrangement 2 is movably mounted, which in turn is firmly connected to a rocker armature 3.
  • a flat permanent magnet 4 is arranged approximately parallel to it, which lies with a central pole (N) above the bearing point of the armature and has at its ends two poles (S) of the same name to the central pole.
  • a coil 5 is arranged above the permanent magnet and above the armature, into which a rod-shaped core 6 is inserted axially.
  • a pole piece 7 is connected to the ends of the core 6.
  • Each of the pole shoes 7 is also coupled to one end of the permanent magnet 4 in the region of a coil end and forms a pole surface for the armature 3 at the bottom.
  • the base 1 consists of a base base body 10, which is formed from insulating material and in which fixed mating contact elements 11, 12, 13 and 14 as well as connecting elements 15 and 16 for movable middle contact elements are anchored. All these contact elements are expediently cut out of a common circuit board and embedded in the base body with a fastening section parallel to the base surface of the base. From these embedded sections, connection pins, for example 11a, 12a and 15a, are bent perpendicular to the underside of the base.
  • the counter-contact elements 11, 12, 13 and 14 themselves are exposed at the top of the base in the trough-shaped base body 10 and are provided with welding profiles 11b, 12b, 13b and 14b.
  • connection elements 15 and 16 are bent upwards on opposite sides of the base, where they are replaced by corresponding Bends and offsets form two bearing supports 15b and 16b for the movable contact arrangement and for the armature.
  • a rib 17 is formed in each case between the fixed counter-contact elements 11 and 13 or 12 and 14 lying next to one another in order to enlarge the insulating distances.
  • the base body has a cutout 18 at the corners for plugging the coil 5.
  • vertical ribs 19 are formed on the vertical wall of the base body 10, the function of which will be described later.
  • the movable contact arrangement 2 has a contact carrier 20 made of insulating material, in which contact springs 21, 22, 23 and 24 are embedded. These contact springs optionally work together with the fixed counter-contact elements 11, 12, 13 and 14 located below them. To form two changeover contacts, the contact springs 21 and 22 are connected in one piece in the present example, so that they form a center contact element which is mechanically and electrically connected to the connecting element 15 in the base via a bearing band 25. Accordingly, the contact springs 23 and 24 are integrally connected to a bearing band 26 and coupled to the connecting element 16. The contact arrangement 2 is firmly connected to the armature 3 via two fastening pins 27.
  • the armature 3 consists of a flat iron strip 30, the central region of which is bent upwards to form a transverse bearing web 31.
  • the armature can roll on the permanent magnet 4 lying above it and optionally rest with one of its pole faces 32 or 33 on one of the pole shoes 7.
  • the bores 34 serve to receive the fastening pins 27 of the contact arrangement, which can be fixed in these bores by hot deformation.
  • the coil 5 has a coil former 50 made of insulating material, which carries a winding 57 between two flanges 51 and 52 and the rod-shaped core 6 in the coil former tube records.
  • the coil flanges 51 and 52 each have extensions 53 which extend downwards and which overlap the base 1 in a box-like manner and come to rest in the recesses 18 thereof.
  • transverse ribs 54 are formed in each case, which each lie in a cross shape with the longitudinal ribs 19 of the base and thus ensure a tight fit in any position.
  • Vertical grooves 55 are provided in the coil flanges 51 and 52 and in the extensions 53, into which coil connection elements 56 are inserted. In another embodiment, however, they could also be embedded in the material of the coil former.
  • the pole shoes 7 When assembling the coil assembly, the pole shoes 7 are inserted from below into corresponding channels of the coil body flanges 51 and 52, their fork-shaped ends 71 each encompassing the core 6 located in the coil body tube. However, it would also be conceivable to provide the pole shoes 7 with an opening which is closed at the top, in which case the pole shoes would then have to be plugged onto the core in the axial direction.
  • the movable contact arrangement 2 When installing the relay, the movable contact arrangement 2 is first combined with the armature 3 to form an armature-contact assembly, the fastening pins 27 being anchored in the bores 34 by hot deformation in the manner described above. Then this armature-contact assembly is connected to the base 1, the contact distances being set in a defined manner. This will now be explained in more detail with reference to FIGS. 4 to 7.
  • this carrier 20 has side lugs 28, from which the two bearing strips emerge in the longitudinal direction of the armature, from where they are then bent vertically upward with a relatively small radius.
  • These upwardly bent sections of the bearing strips thus lie in a common plane perpendicular to the base plane, which on the other hand also runs approximately through the bearing axis of the armature.
  • the bearing strips 25 and 26 are therefore not subjected to torsion, but only to a simple bend.
  • the ribs 17, against which the attachment 28 strikes in the event of impacts, serve as shock protection against the arm being deflected too far in its longitudinal direction.
  • the contact spacings 29 are set to predetermined, identical values. This is preferably done with a device according to FIG. 7 or with a comparable device.
  • the armature contact assembly with the contact springs 21, 22, 23 and 24 rests on the associated mating contact elements 11, 12, 13 and 14.
  • the bearing strips or connecting tabs 25 and 26 rest with their vertical contact surfaces on the bearing supports 15b and 16b of the connecting elements 15 and 16.
  • the mounting device 9 shown in Figure 7 contains a schematically shown measuring device 90, which is brought with two electrically conductive legs 91 and 92 to a coupling point on the top 35 of the armature (double arrow 95) until an electrical passage from the leg 91 over the armature to Leg 92 takes place and is determined in the measuring device mentioned. If the armature is crooked due to a deformed contact spring, a certain pressure force is required to establish the electrical continuity over the armature. The size of the deformation can be derived from the size of this necessary pressing force; if a maximum permissible predetermined force is exceeded, the anchor system is eliminated as faulty.
  • the measuring device travels down a predetermined path, that is to say toward the base 1.
  • a predetermined path that is to say toward the base 1.
  • an electrical connection is established between the four contact springs 21, 22, 23 and 24 on the one hand and the associated mating contact elements 11, 12, 13 and 14 in the base. This is determined by measurement on the connection pins 11a, 12a, 13a and 14a.
  • This test procedure ensures that at least one contact arm of the contact springs 21, 22, 23 and 24, each divided into two arms, ensures a sufficient overstroke.
  • the construction according to the invention thus enables a functional test to be carried out before the anchor assembly is attached; faulty assemblies can be eliminated early.
  • a slide 96 which is located in the measuring device 90, is lowered (double arrow direction 97).
  • the armature 3 is held by a permanent magnet 98 which is fastened on the slide 96.
  • the measuring device is now moved a way corresponding to the desired contact distance 29 (FIG. 6) - taking into account the overstroke - with the armature assembly (double arrow 95).
  • the bearing strips 25 and 26 of the armature-contact assembly are now at the desired height relative to the bearing supports 15b and 16b of the base assembly. In this position, the bearing strips 25 and 26 are welded to the adjacent bearing supports 15b and 16b, respectively.
  • the welding can be carried out, for example, as resistance welding or laser welding.
  • the magnet system the coil 5 with the core 6, the pole pieces 7 and the permanent magnet 4 is pushed onto the base assembly until the desired armature stroke is reached.
  • the coil body 50 clamps on the base body 10, the horizontal ribs 54 of the coil body on the vertical Ribs 19 of the base - if necessary together with other, not shown ribs on both parts - ensure the tight fit in any desired position.
  • both monostable and bistable switching properties of the relay can be achieved.
  • a monostable switching property can also be achieved by an additional separating plate (not shown), which is placed between one of the pole shoes 7 and the associated pole face 32 or 33 of the armature. After putting on the cap 8, the relay is sealed with casting resin in the base area.
  • FIGS. 8 to 10 show the base area of the relay with the armature and a modified bearing attachment.
  • the relay according to FIG. 8 has a base 1 on which a contact arrangement 2 is movably mounted, which in turn is firmly connected to a rocker armature 3.
  • a contact arrangement 2 is movably mounted, which in turn is firmly connected to a rocker armature 3.
  • connection elements 15 and 16 for movable middle contact elements e.g. B. 21 and 22, which are embedded in an insulating support 20 of the contact arrangement 2 and connected to the armature 3 via this.
  • the center contact elements form two bearing bands 25 and 26 which are bent approximately vertically upward and which serve as an electrical and mechanical connection to the base and cause the armature 3 to be pivoted.
  • the connection elements 15 and 16 each have bearing supports 151 and 161 formed vertically upwards, which are furthermore each provided with a U-shaped extension 152 and 162.
  • the bearing strips 25 and 26 are each connected to the bearing supports 151 and 161 via a welding point 153 (FIG. 10), with the U-shaped extension 152 and 162 relieving the pressure on the welding point.
  • the anchor can be installed in such a way that the extension 152 (or 162) initially is only bent by approximately 90 ° relative to the associated bearing support 151 (or 161) when the armature 3 with its bearing bands 25 or 26 is used.
  • the bearing strips 25 and 26 are initially only fixed or attached to the associated bearing support 151 or 161; this is done by means of resistance welding, indicated by the welding point 154 in FIG. 9, or by a notching. However, laser welding at the end edge of the bearing band 25 or 26 is also expedient.
  • the extension 152 or 162 is then bent down to such an extent that the end edge 155 or 165 abuts the bearing band 25 or 26 (see FIG. 10).
  • the final fastening of the bearing strips 25 and 26 to the associated bearing support 151 or 161 is then carried out using laser welding; this welding point is designated 153.
  • the extension 152 or 162 of the bearing support 151 or 161 is first bent in a V-shape and closed in the process to approximately 20 °.
  • the two bearing supports 151 and 161 are bent obliquely outwards so that they form an angle of approximately 80 ° to the floor plane or to the plane of the board 100 which is still partially connected to the base. This makes it possible to insert the anchor with the contact arrangement and with the bearing strips 25 and 26 from above between the bearing supports, as can be clearly seen in FIG.
  • the bearing supports 151 and 161 are bent inwards until they are perpendicular to the base plane and, with their V-shaped extensions 152 and 162, embrace the ends of the bearing strips 25 and 26, respectively.
  • the extensions 152 and 162 of the bearing supports are pressed into their final U-shape so that they encompass the ends of the bearing bands 25 and 26.
  • These bearing strips 25 and 26 each have wart-shaped embossments 156 and 166 or bends which, when the extensions 152 and 162 are deformed, form a firm connection with the Bearing supports 151 and 161 are cold-welded.
  • the extensions 152 and 162 are pre-fixed with the bearing strips 25 and 26, respectively.
  • the final fixation is then carried out, preferably by laser welding.
  • the bent extension 152 or 162 is slightly convex, as can be seen most clearly in FIG. 10. In this way, only the lower edge 155 or 165 of the extension rests with pressure on the bearing band 25 or 26; this is clamped on both sides in the area of this end edge 155 or 166, whereby the actual welding point 153 is relieved when the rocker armature moves.
  • FIG. 13 A further expedient modification of the bearing attachment of the armature is shown in FIG. 13, the same view as in FIG. 8 being shown in principle.
  • An armature 3 with a contact arrangement 2 is thus arranged on a base 1.
  • the armature has bearing bands 25 and 26 emerging laterally from the contact carrier 20, the elastic section of which merges into an end section 25a or 26a, at least the latter being perpendicular to the base plane and at an end section 175a or 176a of a bearing support 175 or 176 is present.
  • an additional clamping plate 177 or 178 Arranged opposite the end sections 175a and 176a of the bearing supports is an additional clamping plate 177 or 178, which clamps the end section 25a or 26a of the respective bearing belt and forms a clamping point with its lower edge 177a or 178a to relieve the welding point 179.
  • This welding point 179 is attached as a laser welding point in the region of the stacked side edges of the end sections 175a of the bearing support, 25a of the bearing band and the clamping plate 177 at a certain distance from the lower edge 177a.
  • Another welding spot 180 can also be provided on the top.
  • the bearing band 26 is attached to the opposite side of the armature.
  • FIG. 14 shows a modification of the bearing area A, a bearing plate 187 being produced by a U-shaped bend in the end section of the bearing support 175. Otherwise, the function and the fastening of the clamping plate 187 is the same as for the clamping plate 177.
  • FIG. 14 The arrangement of FIG. 14 with the U-shaped bent end of the bearing support corresponds approximately to the illustration in FIGS. 8 to 10.
  • the cross-sectional area between the bearing support 175a and the clamping plate 187 is reduced.
  • the bearing support is provided with an embossing 181 from outside before bending.
  • the width of the bearing support can also be reduced by cuts 182 (shown in broken lines). In this way, the bearing support 175 or the clamping plate 187 can be bent with low forces during assembly without the dimensionally accurate anchoring in the base body being impaired. It is also no longer necessary to first carry out a partial bend according to FIG. 9.
  • the end edge of the bearing band 25 or 25a is only tacked to the section 175a of the bearing support by a laser welding point after the adjustment of the armature and the bearing bands 25 and 26, and then the pre-stamped clamping plate is bent over the end of the bearing band .
  • the weld spot 179 is created as previously described.
  • FIG. 15 Another possible embodiment of the bearing area is shown in FIG. 15.
  • a U-shaped bend is provided to produce a clamping plate 188, but this is now not bent over the end edge of the bearing support 175, but over the side edge thereof.
  • the welding point 180 which is now at the top, is relieved.
  • an additional, U-shaped clamping element 189 could also be used to relieve the welding point 179, which in this way forms a clamping plate 190.
  • the welding point 179 is located at the same location as in FIG. 14.
  • FIG. 17 A further possibility is shown in FIG. 17 in order to relieve the welding point without an additional clamping plate.
  • a flexible section 25d of the bearing band 25 is arranged between the contact carrier 20 and the bearing support 175; this is also such that a tangential plane is parallel to the pivot axis of the armature at each point of the bearing band.
  • an end section 25b is now bent over an end edge 175b of the bearing support 175 into the vertical and is fastened with a welding spot 191 on the side of the bearing support opposite the flexible region. Since the bearing band rests on the edge 175b, the welding point 191 is relieved in this case too when the armature moves.
  • a lateral tab 25c is bent at the end of the bearing band 25 and welded to the outside of the bearing support 175 (welding point 192).
  • the end section 25a like the bent tab 25c, is perpendicular to the base plane, thus allowing adjustment before fastening.
  • the welding point 192 is decoupled from the flexible section 25d of the bearing belt 25 in this case as well.
  • FIG. 19 shows a further possibility of fastening the bearing band 25 to the bearing support 175.
  • the embodiment shown in FIG. 8 or FIG. 14 is shown, the bearing support 175 being bent at its end in a U-shape over the end of the bearing band 25 in order to hold it in place .
  • the curved end of the bearing support 175 or the bearing plate 187 is now inclusive the fused between the two clamped end edge of the bearing band 25 to form a welding head 193. This can preferably be done by TIG welding (resistance inert gas welding) or by another welding method.

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Abstract

PCT No. PCT/DE94/00288 Sec. 371 Date Sep. 25, 1995 Sec. 102(e) Date Sep. 25, 1995 PCT Filed Mar. 16, 1994 PCT Pub. No. WO94/22156 PCT Pub. Date Sep. 29, 1994The relay has a base (1) with stationary mating contact elements (11, 12, 13, 14), a coil (5), a permanent magnet (4) and also a rocker armature (3) which is arranged between the coil and the base, is connected to movable contact elements (21, 22, 23, 24) and is mounted on the base by means of bearing strips, the bearing strips simultaneously serving as electrical connections for the movable contact elements. The bearing strips (25, 26) are secured to the bearing supports (15, 16), which are designed as connection elements, of the base in planes extending at right angles to the basic plane of the base. As a result, the contact separation can be set with low tolerance even during production, and it is not dependent on tolerances of the individual parts. This structure consequently permits non-problematic, cost-effective production of the individual parts and accurate assembly without the requirement of subsequent adjustment.

Description

Die Erfindung betrifft ein polarisiertes elektromagnetisches Relais mit

  • einem Sockel aus Isolierstoff, der mit seiner Bodenseite eine Grundebene festlegt und in dem mindestens zwei feststehende Gegenkontaktelemente sowie zwei metallische Lagerstützen für den Anker befestigt sind,
  • einer auf dem Sockel befestigten Spule mit zu der Grundebene paralleler Achse, einem Kern und zwei mit den Enden des Kerns verbundenen Polschuhen,
  • einer Dauermagnetanordnung, die im Bereich der Spulenmitte einen Mittelpol einer ersten Polrichtung bildet und an den Polschuhen jeweils Pole einer dazu entgegengesetzten Polrichtung erzeugt,
  • einem annähernd parallel zur Spulenachse angeordneten, etwa in deren Mitte um eine zur Grundebene parallele Mittelachse schwenkbar gelagerten, flachen Wipp-Anker, und
  • einer mit dem Anker fest verbundenen Kontaktanordnung mit mindestens zwei in einem Isolierstoffträger eingebetteten beweglichen Kontaktelementen, welche wahlweise mit je einem der Gegenkontaktelemente zusammenwirken sowie zwei in den Isolierstofftrager eingebetteten, an gegenüberliegenden Seiten des Ankers austretenden und mit den Lagerstützen verbundenen Lagerelementen.
The invention relates to a polarized electromagnetic relay
  • a base made of insulating material, which defines a base plane with its bottom side and in which at least two fixed mating contact elements and two metallic bearing supports for the armature are fastened,
  • a coil fastened to the base with an axis parallel to the base plane, a core and two pole pieces connected to the ends of the core,
  • a permanent magnet arrangement which forms a central pole of a first pole direction in the region of the coil center and which in each case produces poles of an opposite pole direction on the pole shoes,
  • an approximately parallel to the coil axis, approximately in the middle of a flat rocker arm pivotally mounted about a central axis parallel to the base plane, and
  • a contact arrangement firmly connected to the armature with at least two movable contact elements embedded in an insulating material carrier, which optionally cooperate with one of the mating contact elements and two bearing elements embedded in the insulating material carrier, emerging on opposite sides of the armature and connected to the bearing supports.

Außerdem betrifft die Erfindung ein Verfahren zur Herstellung eines derartigen Relais.The invention also relates to a method for producing such a relay.

Ein Relais der oben beschriebenen Art ist beispielsweise aus der EP 0 423 834 A2 bekannt. Bei diesem Relais wie auch bei anderen, grundsatzlich ähnlich aufgebauten Miniaturrelais werden die verschiedenen Baugruppen, also der Sockel mit den feststehenden Kontaktelementen, der Anker mit den beweglichen Kontaktelementen und die Spulenbaugruppe in Schichtbauweise übereinander angeordnet, was zu einer Summierung der Fertigungstoleranzen der Einzelteile führt. So ist also bei dem bekannten Relais gemäß EP 0 423 834 A2 der Anker über Lagerelemente befestigt, die in Form von Torsionsstegen und parallel zur Grundebene liegenden Befestigungsarmen auf ebenfalls parallel zur Grundebene liegenden Stützflächen aufliegend befestigt sind. Die Abstände zwischen den feststehenden Kontaktelementen und den mit dem Anker verbundenen beweglichen Kontaktelementen sind somit durch die Fertigung der Einzelteile fest vorgegeben. Das bedeutet, daß einerseits die Einzelteile sehr toleranzarm und damit aufwendig hergestellt werden müssen, daß aber trotzdem die verbleibenden Toleranzen sich bei der Montage summieren. Eine nachträgliche Justierung der Kontaktabstände ist somit unumgänglich und bei dem bekannten Relais auch durch Biegen an den Befestigungslappen vorgesehen.A relay of the type described above is known for example from EP 0 423 834 A2. With this relay as well as with other miniature relays that are basically similar in construction, the various assemblies, i.e. the base with the fixed contact elements, the armature with the movable ones Contact elements and the coil assembly are arranged one above the other in a layered construction, which leads to a summation of the manufacturing tolerances of the individual parts. Thus, in the known relay according to EP 0 423 834 A2, the armature is fastened by means of bearing elements, which are fastened in the form of torsion bars and fastening arms lying parallel to the base plane, on support surfaces also lying parallel to the base plane. The distances between the fixed contact elements and the movable contact elements connected to the armature are thus predetermined by the manufacture of the individual parts. This means that, on the one hand, the individual parts have to be manufactured with very little tolerance and thus are expensive, but that the remaining tolerances still add up during assembly. Subsequent adjustment of the contact spacing is therefore unavoidable and is also provided in the known relay by bending the fastening tabs.

Ziel der vorliegenden Erfindung ist es, ein Relais der eingangs genannten Art bereits konstruktiv so zu gestalten und ein Herstellungs- bzw. Montageverfahren hierfür anzugeben, daß die Toleranzen der Einzelteile keinen Einfluß auf die Kontaktabstände haben. Unabhängig von der Genauigkeit der Einzelteile sollen also die beweglichen und die feststehenden Kontaktelemente des Relais lagerichtig zueinander montierbar sein, so daß auch eine nachträgliche Justierung nicht mehr erforderlich ist.The aim of the present invention is to construct a relay of the type mentioned at the outset in such a way and to specify a manufacturing or assembly method for this that the tolerances of the individual parts have no influence on the contact spacings. Regardless of the accuracy of the individual parts, the movable and the fixed contact elements of the relay should be able to be mounted in the correct position relative to one another, so that subsequent adjustment is no longer necessary.

Erfindungsgemäß wird dieses Ziel bei einem Relais der eingangs genannten Art dadurch erreicht, daß die Lagerelemente als flache Lagerbänder ausgebildet sind, welche sich zumindest mit einem Befestigungsabschnitt senkrecht zur Grundebene erstrecken und daß die Lagerstützen senkrechte Anlageflächen bilden, an denen die Befestigungsabschnitte der Lagerbänder flach anliegen, und in einer stufenlos einstellbaren Höhenposition befestigt sind.According to the invention, this goal is achieved in a relay of the type mentioned at the outset in that the bearing elements are designed as flat bearing strips which extend at least with one fastening section perpendicular to the base plane and in that the bearing supports form vertical contact surfaces against which the fastening sections of the bearing belts lie flat, and are attached in an infinitely adjustable height position.

Bei der erfindungsgemäßen Relaiskonstruktion wird also die bisherige Schichtbauweise verlassen, und die Verbindung zwischen den beweglichen Teilen und dem feststehenden Sockel erfolgt in Verbindungsebenen, welche senkrecht zur Grundebene und damit in Richtung der Schaltbewegung verlaufen. Somit kann bei der Montage des Ankers der Kontaktabstand exakt und stufenlos eingestellt und durch die Befestigung der Lagerelemente fixiert werden. Damit erspart man nicht nur eine aufwendige, toleranzarme Fertigung der Einzelteile, sondern auch die nachträgliche Justierung der Kontaktabstände.In the relay construction according to the invention, the previous layer construction is thus abandoned, and the connection between The moving parts and the fixed base take place in connection planes which run perpendicular to the base plane and thus in the direction of the switching movement. This means that the contact distance can be precisely and continuously adjusted when mounting the armature and fixed by fastening the bearing elements. This not only saves time-consuming, low-tolerance production of the individual parts, but also the subsequent adjustment of the contact spacing.

Vorzugsweise erstrecken sich die beiden Lagerbänder jeweils mit einem elastischen Abschnitt neben dem Anker derart, daß die Tangentialebene an jedem Punkt dieses Abschnitts parallel zur Drehachse des Ankers liegt, daß also der elastische Abschnitt bei der Ankerbewegung praktisch nur auf Biegung beansprucht wird. In einer bevorzugten Ausführungsform sind dabei die Lagerbander jeweils in seitlichen Fortsätzen des Isolierstoffträgers derart eingebettet, daß sie in einer zur Ankerlängsrichtung parallelen Richtung aus diesem austreten und in eine zur Grundebene senkrechte Richtung gebogen und an den parallel verlaufenden Befestigungslappen der Lagerstützen befestigt sind. Vorzugsweise erstrecken sich die beiden Lagerbänder in einer gemeinsamen, zur Ankerlängsachse senkrechten Richtung in der Weise, daß sie bei Bewegung des Ankers auf einfache Biegung beansprucht werden. Wenn die Lagerbänder zugleich als Stromzuführung zu den beweglichen Kontaktelementen dienen, dann sind sie jeweils mit mindestens einem dieser beweglichen Kontaktelemente, vorzugsweise einstückig, verbunden, während die Lagerstützen ihrerseits mit Anschlußelementen im Sockel verbunden sind.Preferably, the two bearing strips each extend with an elastic section next to the armature such that the tangential plane at each point of this section is parallel to the axis of rotation of the armature, so that the elastic section is practically only subjected to bending during the armature movement. In a preferred embodiment, the bearing strips are each embedded in lateral extensions of the insulating material carrier in such a way that they emerge from it in a direction parallel to the longitudinal direction of the armature and are bent in a direction perpendicular to the base plane and are fastened to the parallel mounting tabs of the bearing supports. The two bearing strips preferably extend in a common direction perpendicular to the longitudinal axis of the anchor in such a way that they are subjected to simple bending when the anchor moves. If the bearing strips also serve as a power supply to the movable contact elements, then they are each connected to at least one of these movable contact elements, preferably in one piece, while the bearing supports are in turn connected to connection elements in the base.

Zur Entlastung der Befestigungsstellen der Lagerbander beim Schaltvorgang ist in einer vorteilhaften Ausgestaltung vorgesehen, daß der Endabschnitt des jeweiligen Lagerbandes zwischen der zugehörigen Lagerstütze und einer gegenüberliegenden Klemmplatte eingeklemmt ist, welche mit einer Endkante eine Einspannstelle für das Lagerband vor dessen Befestigungsstelle definiert. Die Klemmplatte kann dabei durch einen U-förmig umgebogenen Endabschnitt der Lagerstütze gebildet sein, welche den Endabschnitt des Lagerbandes an dessen Abschlußkante oder auch seitlich umgreift. Der Biegeabschnitt zwischen der eigentlichen Lagerstütze und der Klemmplatte kann dabei im Querschnitt geschwächt sein, beispielsweise durch Prägung zur Verringerung der Dicke und/oder seitliche Einschnitte zur Verringerung der Breite. Es ist aber auch möglich, daß die Klemmplatte Teil einer U-förmigen, auf die freien Enden der Lagerstütze und des Lagerbandes gesteckten Klammer ist.In order to relieve the fastening points of the bearing bands during the switching process, it is provided in an advantageous embodiment that the end section of the respective bearing band is clamped between the associated bearing support and an opposing clamping plate, which defines with one end edge a clamping point for the bearing band in front of its fastening point. The clamping plate can by a Be formed in a U-shaped bent end portion of the bearing support, which engages around the end portion of the bearing band at its end edge or laterally. The bending section between the actual bearing support and the clamping plate can be weakened in cross section, for example by embossing to reduce the thickness and / or lateral incisions to reduce the width. However, it is also possible for the clamping plate to be part of a U-shaped clamp which is placed on the free ends of the bearing support and the bearing band.

Mit Hilfe der Klemmplatte bzw. der U-förmigen Verlängerung der jeweiligen Lagerstütze wird also das an ihr befestigte Lagerband zwischen der Endkante dieser Klemmplatte und der eigentlichen Lagerstütze eingeklemmt, so daß diese Einspannstelle auch zugleich die Biegestelle für das jeweilige Lagerband bei der Ankerbewegung bildet. Die eigentliche Befestigungsstelle, die vorzugsweise als Schweißpunkt ausgebildet ist, wird somit vollständig von den Bewegungskräften entlastet.With the help of the clamping plate or the U-shaped extension of the respective bearing support, the bearing band attached to it is clamped between the end edge of this clamping plate and the actual bearing support, so that this clamping point also forms the bending point for the respective bearing band during the anchor movement. The actual fastening point, which is preferably designed as a welding point, is thus completely relieved of the movement forces.

Eine andere Möglichkeit zur Entlastung der Befestigungsstelle, welche in der Regel ein Schweißpunkt ist, kann darin bestehen, daß das Lagerband jeweils mit dem elastischen Abschnitt zwischen dem Anker und der Lagerstütze angeordnet ist und mit einem zusätzlich am Ende oder seitlich angeformten Befestigungsabschnitt die Lagerstütze umgreifend an einer von dem elastischen Abschnitt abgewandten Seite der Lagerstütze befestigt ist. In diesem Fall liegt eine Kante der Lagerstütze zwischen dem Schweißpunkt und dem elastischen Abschnitt, so daß wiederum eine Entlastung der Befestigungsstelle gegeben ist.Another way to relieve the mounting point, which is usually a spot weld, may be that the bearing band is arranged with the elastic section between the anchor and the bearing support and with an additional attachment section at the end or laterally formed on the bearing support a side of the bearing support facing away from the elastic section is attached. In this case, an edge of the bearing support lies between the welding point and the elastic section, so that the fastening point is again relieved.

Die Dauermagnetanordnung wird vorzugsweise durch einen stabförmigen Dauermagneten gebildet, der parallel zur Spulenachse unterhalb der Spule angeordnet ist und an den Enden jeweils gleichnamige Pole sowie in der Mitte einen dazu ungleichnamigen Pol aufweist.The permanent magnet arrangement is preferably formed by a rod-shaped permanent magnet which is arranged parallel to the coil axis below the coil and at the ends poles of the same name and a pole of the same name in the middle.

Ein bevorzugtes Verfahren zur Herstellung eines erfindungsgemäßen Relais umfaßt die folgenden Schritte:

  • a) Auf dem Sockel wird der mit der Kontaktanordnung verbundene Anker derart angeordnet, daß die Lagerbänder an den Lagerstützen höhenverschiebbar anliegen;
  • b) durch Höhenverschiebung des Ankers wird ein vorgegebener Kontaktabstand eingestellt;
  • c) die Lagerbänder werden in der eingestellten Position des Ankers mit den Lagerstützen verbunden;
  • d) die mit dem Kern, den Polschuhen und dem Dauermagneten bestückte Spule wird von oben soweit auf den Sockel aufgeschoben, bis vorgegebene Arbeitsluftspalte des Ankers erreicht sind.
A preferred method for producing a relay according to the invention comprises the following steps:
  • a) The anchor connected to the contact arrangement is arranged on the base in such a way that the bearing strips rest against the bearing supports in a height-displaceable manner;
  • b) a predetermined contact distance is set by shifting the height of the armature;
  • c) the bearing belts are connected to the bearing supports in the set position of the anchor;
  • d) the coil equipped with the core, the pole pieces and the permanent magnet is pushed onto the base from above until predetermined working air gaps of the armature are reached.

Bei einem zweckmäßigen Verfahren zur Befestigung der Lagerbänder an den Lagerstützen werden die Lagerbänder nach der Einstellung des Kontaktabstandes zunächst durch einen Schweißpunkt an der Lagerstütze vorfixiert, vorzugsweise durch einen Laserschweißpunkt an der Endkante des Lagerbandes, und dann wird ein Endabschnitt der Lagerstütze zur Bildung einer Klemmplatte U-förmig über eine Endkante des Lagerbandes gebogen, wobei danach die aneinanderliegenden Abschnitte der Lagerstütze, des Lagerbandes und der Klemmplatte miteinander verschweißt werden. Zweckmäßigerweise werden dabei ein oder mehrere Schweißpunkte mit einem Laserschweißverfahren oder einem ähnlichen Punktschweißverfahren im Kantenbereich der Lagerbänder und der Lagerstützen bzw. Klemmplatten erzeugt. Es ist aber auch möglich, den Verbundbereich von Lagerstütze, Lagerband und gegebenenfalls Klemmplatte an seinem freien Ende mit einem beliebigen Schweißverfahren, vorzugsweise einem WIG-Schweißverfahren, miteinander zu verschmelzen.In an expedient method for fastening the bearing strips to the bearing supports, the bearing strips are first pre-fixed after the adjustment of the contact distance by a welding spot on the bearing support, preferably by a laser welding point on the end edge of the bearing strap, and then an end section of the bearing support is used to form a clamping plate U -shaped over an end edge of the bearing band, the adjacent sections of the bearing support, the bearing band and the clamping plate are then welded together. One or more welding spots are expediently generated using a laser welding process or a similar spot welding process in the edge region of the bearing belts and the bearing supports or clamping plates. However, it is also possible to fuse the bonded area of the bearing support, the bearing band and, if applicable, the clamping plate at its free end to one another using any welding method, preferably a TIG welding method.

Die Erfindung wird nachfolgend an einem Ausführungsbeispiel anhand der Zeichnung näher erläutert. Es zeigt

  • Figur 1 ein erfindungsgemäß gestaltetes Relais in Explosionsdarstellung,
  • Figur 2 ein fertig montiertes Relais nach Figur 1, jedoch ohne Kappe, in perspektivischer Darstellung,
  • Figur 3 ein Relais gemäß Figur 2 mit aufgesetzter Kappe, das außermittig in Längsrichtung geschnitten ist,
  • Figur 4 eine vergrößerte Darstellung eines Sockels und einer Ankerbaugruppe vor der Montage,
  • Figur 5 und 6 einen Sockel mit montierter Ankerbaugruppe, einmal in Seitenansicht (Figur 5) und einmal im Längschnitt (Figur 6),
  • Figur 7 einen Sockel und eine Ankerbaugruppe von vorne gesehen mit einer Montagevorrichtung,
  • Figur 8 den Sockel mit der montierten Ankerbaugruppe bei einem Relais mit einer abgewandelten Ankerbefestigung,
  • Figur 9 und 10 eine Seitenansicht (im Ausschnitt) auf die Anordnung von Figur 8, und zwar in verschiedenen Phasen der Befestigung eines Lagerbandes,
  • Figur 11 und 12 ein etwas abgewandeltes Montageverfahren für den Anker, und zwar den Zustand nach dem Einsetzen des Ankers und vor dem Befestigen der Lagerbänder, in perspektivischer Darstellung und im Schnitt,
  • Figur 13 eine perspektivische Ansicht eines Sockels mit montierter Ankerbaugruppe, wobei die Lagerbänder mit einer zusätzlichen Klemmplatte befestigt sind,
  • Figur 14 bis 19 abgewandelte Ausführungsformen des Lagerbereichs A aus Figur 13 mit unterschiedlichen Möglichkeiten zur Befestigung eines Lagerbandes an einer Lagerstütze.
The invention is explained in more detail using an exemplary embodiment with reference to the drawing. It shows
  • FIG. 1 shows a relay designed according to the invention in an exploded view,
  • FIG. 2 shows a fully assembled relay according to FIG. 1, but without a cap, in a perspective view,
  • 3 shows a relay according to FIG. 2 with a cap attached, which is cut off-center in the longitudinal direction,
  • FIG. 4 shows an enlarged illustration of a base and an armature assembly before assembly,
  • 5 and 6 show a base with an assembled anchor assembly, once in a side view (FIG. 5) and once in a longitudinal section (FIG. 6),
  • FIG. 7 shows a base and an anchor assembly seen from the front with an assembly device,
  • 8 shows the base with the mounted armature assembly in the case of a relay with a modified armature fastening,
  • FIGS. 9 and 10 show a side view (in detail) of the arrangement from FIG. 8, specifically in different phases of the fastening of a bearing band,
  • FIGS. 11 and 12 show a slightly modified assembly method for the anchor, namely the state after the anchor has been inserted and before the bearing strips have been fastened, in a perspective view and in section,
  • FIG. 13 shows a perspective view of a base with the anchor assembly installed, the bearing strips being fastened with an additional clamping plate,
  • 14 to 19 modified embodiments of the bearing area A from FIG. 13 with different possibilities for fastening a bearing band to a bearing support.

Das in der Zeichnung dargestellte Relais besitzt einen Sockel 1, auf welchem eine Kontaktanordnung 2 beweglich gelagert ist, welche ihrerseits mit einem Wippanker 3 fest verbunden ist. Oberhalb des Ankers ist annähernd parallel zu diesem ein flacher Dauermagnet 4 angeordnet, der mit einem Mittelpol (N) über der Lagerstelle des Ankers liegt und an seinen Enden zwei zum Mittelpol ungleichnamige Pole (S) aufweist. Über dem Dauermagneten und über dem Anker ist eine Spule 5 angeordnet, in die axial ein stabförmiger Kern 6 eingeschoben ist. Mit den Enden des Kerns 6 ist jeweils ein Polschuh 7 verbunden. Jeder der Polschuhe 7 ist im Bereich eines Spulenendes auch mit einem Ende des Dauermagneten 4 gekoppelt und bildet nach unten eine Polfläche für den Anker 3. Mit einer auf den Sockel 1 aufgesetzten Kappe 8 wird schließlich ein geschlossenes Gehäuse gebildet, das in üblicher Weise auch abgedichtet werden kann.The relay shown in the drawing has a base 1 on which a contact arrangement 2 is movably mounted, which in turn is firmly connected to a rocker armature 3. Above the armature, a flat permanent magnet 4 is arranged approximately parallel to it, which lies with a central pole (N) above the bearing point of the armature and has at its ends two poles (S) of the same name to the central pole. A coil 5 is arranged above the permanent magnet and above the armature, into which a rod-shaped core 6 is inserted axially. A pole piece 7 is connected to the ends of the core 6. Each of the pole shoes 7 is also coupled to one end of the permanent magnet 4 in the region of a coil end and forms a pole surface for the armature 3 at the bottom. With a cap 8 placed on the base 1, a closed housing is finally formed, which is also sealed in the usual way can be.

Der Sockel 1 besteht aus einem Sockel-Grundkörper 10, der aus Isolierstoff geformt ist und in welchem feststehende Gegenkontaktelemente 11, 12, 13 und 14 sowie Anschlußelemente 15 und 16 für bewegliche Mittel-Kontaktelemente verankert sind. Alle diese Kontaktelemente sind zweckmäßigerweise aus einer gemeinsamen Platine freigeschnitten und mit einem Befestigungsabschnitt paraliel zur Bodenfläche des Sockels in den Grundkörper eingebettet. Von diesen eingebetteten Abschnitten sind jeweils Anschlußstifte, z.B. 11a, 12a und 15a, senkrecht zur Unterseite des Sockels abgebogen. Die Gegenkontaktelemente 11, 12, 13 und 14 selbst liegen an der Oberseite des Bodens im wannenförmigen Sockel-Grundkörper 10 frei und sind mit Schweißprofilen 11b, 12b, 13b und 14b versehen. Die Anschlußelemente 15 und 16 jedoch sind an gegenüberliegenden Seiten des Sockels nach oben abgebogen, wo sie durch entsprechende Abwinkelungen und Abkröpfungen zwei Lagerstützen 15b und 16b für die bewegliche Kontaktanordnung bzw. für den Anker bilden. Zwischen den jeweils nebeneinander liegenden feststehenden Gegenkontaktelementen 11 und 13 bzw. 12 und 14 ist jeweils eine Rippe 17 zur Vergrößerung der Isolierstrecken angeformt. Außerdem besitzt der Grundkörper an den Ecken jeweils eine Aussparung 18 zum Aufstecken der Spule 5. Im Bereich dieser Ausnehmungen sind an der senkrechten Wand des Grundkörpers 10 jeweils senkrechte Rippen 19 angeformt, deren Funktion später noch beschrieben wird.The base 1 consists of a base base body 10, which is formed from insulating material and in which fixed mating contact elements 11, 12, 13 and 14 as well as connecting elements 15 and 16 for movable middle contact elements are anchored. All these contact elements are expediently cut out of a common circuit board and embedded in the base body with a fastening section parallel to the base surface of the base. From these embedded sections, connection pins, for example 11a, 12a and 15a, are bent perpendicular to the underside of the base. The counter-contact elements 11, 12, 13 and 14 themselves are exposed at the top of the base in the trough-shaped base body 10 and are provided with welding profiles 11b, 12b, 13b and 14b. The connection elements 15 and 16, however, are bent upwards on opposite sides of the base, where they are replaced by corresponding Bends and offsets form two bearing supports 15b and 16b for the movable contact arrangement and for the armature. A rib 17 is formed in each case between the fixed counter-contact elements 11 and 13 or 12 and 14 lying next to one another in order to enlarge the insulating distances. In addition, the base body has a cutout 18 at the corners for plugging the coil 5. In the region of these recesses, vertical ribs 19 are formed on the vertical wall of the base body 10, the function of which will be described later.

Die bewegliche Kontaktanordnung 2 besitzt einen Kontaktträger 20 aus Isolierstoff, in welchen Kontaktfedern 21, 22, 23 und 24 eingebettet sind. Diese Kontaktfedern arbeiten wahlweise mit den unter ihnen liegenden feststehenden Gegenkontaktelementen 11, 12, 13 und 14 zusammen. Zur Bildung von zwei Umschaltkontakten sind im vorliegenden Beispiel die Kontaktfedern 21 und 22 einstückig verbunden, so daß sie ein Mittelkontaktelement bilden, das über ein Lagerband 25 mechanisch und elektrisch mit dem Anschlußelement 15 im Sockel verbunden ist. Entsprechend sind die Kontaktfedern 23 und 24 einstückig mit einem Lagerband 26 verbunden und an das Anschlußelement 16 gekoppelt. Über zwei Befestigungszapfen 27 ist die Kontaktanordnung 2 mit dem Anker 3 fest verbunden.The movable contact arrangement 2 has a contact carrier 20 made of insulating material, in which contact springs 21, 22, 23 and 24 are embedded. These contact springs optionally work together with the fixed counter-contact elements 11, 12, 13 and 14 located below them. To form two changeover contacts, the contact springs 21 and 22 are connected in one piece in the present example, so that they form a center contact element which is mechanically and electrically connected to the connecting element 15 in the base via a bearing band 25. Accordingly, the contact springs 23 and 24 are integrally connected to a bearing band 26 and coupled to the connecting element 16. The contact arrangement 2 is firmly connected to the armature 3 via two fastening pins 27.

Der Anker 3 besteht aus einem flachen Eisenband 30, dessen Mittelbereich zu einem quer verlaufenden Lagersteg 31 nach oben gebogen ist. Damit kann der Anker an dem über ihm liegenden Dauermagneten 4 abrollen und wahlweise mit einer seiner Polflächen 32 oder 33 an einem der Polschuhe 7 anliegen. Die Bohrungen 34 dienen zur Aufnahme der Befestigungszapfen 27 der Kontaktanordnung, welche in diesen Bohrungen durch Warmverformung fixiert werden können.The armature 3 consists of a flat iron strip 30, the central region of which is bent upwards to form a transverse bearing web 31. Thus, the armature can roll on the permanent magnet 4 lying above it and optionally rest with one of its pole faces 32 or 33 on one of the pole shoes 7. The bores 34 serve to receive the fastening pins 27 of the contact arrangement, which can be fixed in these bores by hot deformation.

Die Spule 5 besitzt einen aus Isolierstoff geformten Spulenkörper 50, der zwischen zwei Flanschen 51 und 52 eine Wicklung 57 trägt und im Spulenkörperrohr den stabförmigen Kern 6 aufnimmt. Die Spulenflansche 51 und 52 besitzen an den vier Ecken des Systems jeweils nach unten verlängerte Ansätze 53, welche den Sockel 1 schachtelförmig übergreifen und in dessen Ausnehmungen 18 zu liegen kommen. An den Innenseiten der Fortsätze 53 sind jeweils Querrippen 54 angeformt, welche jeweils mit den Längsrippen 19 des Sockels kreuzförmig aufeinanderliegen und damit einen Festsitz in beliebiger Lage gewährleisten. In den Spulenflanschen 51 und 52 bzw. in den Fortsätzen 53 sind jeweils senkrechte Nuten 55 vorgesehen, in welche Spulenanschlußelemente 56 eingesteckt sind. In einer anderen Ausführungsform könnten sie jedoch auch in das Material des Spulenkörpers eingebettet sein.The coil 5 has a coil former 50 made of insulating material, which carries a winding 57 between two flanges 51 and 52 and the rod-shaped core 6 in the coil former tube records. At the four corners of the system, the coil flanges 51 and 52 each have extensions 53 which extend downwards and which overlap the base 1 in a box-like manner and come to rest in the recesses 18 thereof. On the inner sides of the extensions 53, transverse ribs 54 are formed in each case, which each lie in a cross shape with the longitudinal ribs 19 of the base and thus ensure a tight fit in any position. Vertical grooves 55 are provided in the coil flanges 51 and 52 and in the extensions 53, into which coil connection elements 56 are inserted. In another embodiment, however, they could also be embedded in the material of the coil former.

Bei der Montage der Spulenbaugruppe werden die Polschuhe 7 von unten in entsprechende Kanäle der Spulenkörperflansche 51 und 52 eingesteckt, wobei sie mit ihren gabelförmigen Enden 71 jeweils den im Spulenkörperrohr befindlichen Kern 6 umfassen. Es wäre aber auch denkbar, die Polschuhe 7 jeweils mit einem nach oben geschlossenen Durchbruch zu versehen, wobei dann die Polschuhe in Axialrichtung auf den Kern aufgesteckt werden müßten.When assembling the coil assembly, the pole shoes 7 are inserted from below into corresponding channels of the coil body flanges 51 and 52, their fork-shaped ends 71 each encompassing the core 6 located in the coil body tube. However, it would also be conceivable to provide the pole shoes 7 with an opening which is closed at the top, in which case the pole shoes would then have to be plugged onto the core in the axial direction.

Bei der Montage des Relais wird die bewegliche Kontaktanordnung 2 zunächst mit dem Anker 3 zu einer Anker-Kontakt-Baugruppe vereinigt, wobei die Befestigungszapfen 27 in der oben beschriebenen Weise in den Bohrungen 34 durch Warmverformung verankert werden. Dann wird diese Anker-Kontakt-Baugruppe mit dem Sockel 1 verbunden, wobei die Kontaktabstände in definierter Weise eingestellt werden. Dies soll anhand der Figuren 4 bis 7 nunmehr näher erläutert werden.When installing the relay, the movable contact arrangement 2 is first combined with the armature 3 to form an armature-contact assembly, the fastening pins 27 being anchored in the bores 34 by hot deformation in the manner described above. Then this armature-contact assembly is connected to the base 1, the contact distances being set in a defined manner. This will now be explained in more detail with reference to FIGS. 4 to 7.

Die Lagerbänder 25 und 26, die gleichzeitig als elektrische Anschlußlappen für die Mittelkontaktelemente 21/22 bzw. 23/24 dienen und mit diesen einstückig aus einer Platine geschnitten sind, treten jeweils im wesentlichen waagerecht aus dem Isolierstoffträger 20 der Kontaktanordnung aus. Zu diesem Zweck besitzt dieser Träger 20 seitliche Ansätze 28, aus denen die beiden Lagerbänder in Längsrichtung des Ankers austreten, von wo sie dann mit einem verhältnismäßig kleinen Radius senkrecht nach oben abgebogen sind. Diese nach oben abgebogenen Abschnitte der Lagerbänder liegen damit in einer gemeinsamen, zur Grundebene senkrechten Ebene, welche andererseits auch annähernd durch die Lagerachse des Ankers geht. Im montierten Relais werden die Lagerbänder 25 und 26 deshalb nicht auf Torsion, sondern lediglich auf einfache Biegung beansprucht. Als Stoßsicherung gegen zu weite Auslenkung des Ankers in seiner Längsrichtung dienen die Rippen 17, an welche der Ansatz 28 bei Stößen anschlägt.The bearing strips 25 and 26, which also serve as electrical connection tabs for the center contact elements 21/22 and 23/24 and are cut integrally therewith from a circuit board, each emerge essentially horizontally from the insulating carrier 20 of the contact arrangement. For this purpose, this carrier 20 has side lugs 28, from which the two bearing strips emerge in the longitudinal direction of the armature, from where they are then bent vertically upward with a relatively small radius. These upwardly bent sections of the bearing strips thus lie in a common plane perpendicular to the base plane, which on the other hand also runs approximately through the bearing axis of the armature. In the assembled relay, the bearing strips 25 and 26 are therefore not subjected to torsion, but only to a simple bend. The ribs 17, against which the attachment 28 strikes in the event of impacts, serve as shock protection against the arm being deflected too far in its longitudinal direction.

Nach dem Einsetzen der Anker-Kontakt-Baugruppe in den Sockel 1 gemäß Figuren 5 und 6 werden die Kontaktabstände 29 (für die Mittellage des Ankers) auf vorgegebene gleiche Werte eingestellt. Dies erfolgt vorzugsweise mit einer Vorrichtung gemäß Figur 7 oder mit einer vergleichbaren Vorrichtung. Nachdem die Lagerbänder 25 und 26 zu den Lagerstützen 15b und 16b des Grundkörpers ausgerichtet wurden, liegt die Anker-Kontaktbaugruppe mit den Kontaktfedern 21, 22, 23 und 24 auf den zugehörigen Gegenkontaktelementen 11, 12, 13 und 14 auf. Die Lagerbänder bzw. Anschlußlappen 25 und 26 liegen mit ihren senkrechten Kontaktflächen an den Lagerstützen 15b und 16b der Anschlußelemente 15 und 16 an. Die in Figur 7 dargestellte Montagevorrichtung 9 enthält eine schematisch gezeigte Meßeinrichtung 90, welche mit zwei elektrisch leitenden Schenkeln 91 und 92 an eine Ankoppelstelle auf der Oberseite 35 des Ankers herangeführt wird (Doppelpfeil 95), bis ein elektrischer Durchgang vom Schenkel 91 über den Anker zum Schenkel 92 stattfindet und in der erwähnten Meßeinrichtung festgestellt wird. Liegt der Anker aufgrund einer deformierten Kontaktfeder schief, so ist eine gewisse Andruckkraft erforderlich, um den elektrischen Durchgang über den Anker herzustellen. Aus der Größe dieser notwendigen Andruckkraft läßt sich die Größe der Deformation ableiten; bei Überschreiten einer höchstzulässigen vorgegebenen Kraft wird das Ankersystem als fehlerhaft ausgeschieden.After inserting the armature-contact assembly into the base 1 according to FIGS. 5 and 6, the contact spacings 29 (for the central position of the armature) are set to predetermined, identical values. This is preferably done with a device according to FIG. 7 or with a comparable device. After the bearing strips 25 and 26 have been aligned with the bearing supports 15b and 16b of the base body, the armature contact assembly with the contact springs 21, 22, 23 and 24 rests on the associated mating contact elements 11, 12, 13 and 14. The bearing strips or connecting tabs 25 and 26 rest with their vertical contact surfaces on the bearing supports 15b and 16b of the connecting elements 15 and 16. The mounting device 9 shown in Figure 7 contains a schematically shown measuring device 90, which is brought with two electrically conductive legs 91 and 92 to a coupling point on the top 35 of the armature (double arrow 95) until an electrical passage from the leg 91 over the armature to Leg 92 takes place and is determined in the measuring device mentioned. If the armature is crooked due to a deformed contact spring, a certain pressure force is required to establish the electrical continuity over the armature. The size of the deformation can be derived from the size of this necessary pressing force; if a maximum permissible predetermined force is exceeded, the anchor system is eliminated as faulty.

Wurde jedoch durch den oben beschriebenen ersten Meßschritt die Anker-Kontakt-Baugruppe als ausreichend eben festgestellt, fährt die Meßeinrichtung einen vorbestimmten Weg weiter nach unten, also in Richtung auf den Sockel 1. In diesem Zustand muß zwischen den vier Kontaktfedern 21, 22, 23 und 24 einerseits und den zugehörigen Gegenkontaktelementen 11, 12, 13 und 14 im Sockel eine elektrische Verbindung zustandekommen. Dies wird durch Messung an den Anschlußstiften 11a, 12a, 13a und 14a ermittelt. Durch diesen Prüfvorgang wird sichergestellt, daß zumindest jeweils ein Kontaktarm der in jeweils zwei Arme unterteilten Kontaktfedern 21, 22, 23 und 24 einen ausreichenden Überhub gewährleistet. Durch die erfindungsgemäße Konstruktion wird somit eine Funktionsprüfung bereits vor der Befestigung der Ankerbaugruppe möglich; fehlerhafte Baugruppen können so frühzeitig ausgeschieden werden.However, if the armature-contact assembly has been determined to be sufficiently level by the above-described first measuring step, the measuring device travels down a predetermined path, that is to say toward the base 1. In this state, between the four contact springs 21, 22, 23 and 24 on the one hand and the associated mating contact elements 11, 12, 13 and 14 in the base an electrical connection is established. This is determined by measurement on the connection pins 11a, 12a, 13a and 14a. This test procedure ensures that at least one contact arm of the contact springs 21, 22, 23 and 24, each divided into two arms, ensures a sufficient overstroke. The construction according to the invention thus enables a functional test to be carried out before the anchor assembly is attached; faulty assemblies can be eliminated early.

Nach dieser Überhubprüfung wird ein Schieber 96, der sich in der Meßeinrichtung 90 befindet, abgesenkt (Doppelpfeilrichtung 97). Der Anker 3 wird von einem Dauermagneten 98, der auf dem Schieber 96 befestigt ist, festgehalten. Die Meßeinrichtung wird nun einen dem gewünschten Kontaktabstand 29 entsprechenden Weg (Figur 6) - unter Berücksichtigung des Überhubes - mit der Ankerbaugruppe nach oben bewegt (Doppelpfeil 95). Die Lagerbander 25 und 26 der Anker-Kontakt-Baugruppe liegen nun auf der gewünschten Höhe zu den Lagerstützen 15b und 16b der Sockelbaugruppe. In dieser Position werden jeweils die Lagerbander 25 bzw. 26 mit den anliegenden Lagerstützen 15b bzw. 16b verschweißt. Die Schweißung kann beispielsweise als Widerstandsschweißung oder Laserschweißung erfolgen.After this overstroke test, a slide 96, which is located in the measuring device 90, is lowered (double arrow direction 97). The armature 3 is held by a permanent magnet 98 which is fastened on the slide 96. The measuring device is now moved a way corresponding to the desired contact distance 29 (FIG. 6) - taking into account the overstroke - with the armature assembly (double arrow 95). The bearing strips 25 and 26 of the armature-contact assembly are now at the desired height relative to the bearing supports 15b and 16b of the base assembly. In this position, the bearing strips 25 and 26 are welded to the adjacent bearing supports 15b and 16b, respectively. The welding can be carried out, for example, as resistance welding or laser welding.

Danach wird das Magnetsystem, die Spule 5 mit dem Kern 6, den Polschuhen 7 und dem Dauermagneten 4, auf die Sockelbaugruppe geschoben, bis der gewünschte Ankerhub erreicht ist. Der Spulenkörper 50 klemmt auf dem Sockel-Grundkörper 10, wobei die waagerechten Rippen 54 des Spulenkörpers auf den senkrechten Rippen 19 des Sockels - nötigenfalls zusammen mit weiteren, nicht dargestellten Rippen an beiden Teilen - den Festsitz in jeder gewünschten Lage gewährleisten. Durch Abgleichen des Dauermagneten 4 können sowohl monostabile als auch bistabile Schalteigenschaften des Relais erreicht werden. Eine monostabile Schalteigenschaft kann auch durch ein nicht dargestelltes zusätzliches Trennblech erreicht werden, welches zwischen einem der Polschuhe 7 und der zugehörigen Polfläche 32 oder 33 des Ankers plaziert wird. Nach dem Aufsetzen der Kappe 8 wird das Relais mit Gießharz im Sockelbereich abgedichtet.Then the magnet system, the coil 5 with the core 6, the pole pieces 7 and the permanent magnet 4, is pushed onto the base assembly until the desired armature stroke is reached. The coil body 50 clamps on the base body 10, the horizontal ribs 54 of the coil body on the vertical Ribs 19 of the base - if necessary together with other, not shown ribs on both parts - ensure the tight fit in any desired position. By adjusting the permanent magnet 4, both monostable and bistable switching properties of the relay can be achieved. A monostable switching property can also be achieved by an additional separating plate (not shown), which is placed between one of the pole shoes 7 and the associated pole face 32 or 33 of the armature. After putting on the cap 8, the relay is sealed with casting resin in the base area.

In den Figuren 8 bis 10 ist der Sockelbereich des Relais mit dem Anker und einer modifizierten Lagerbefestigung gezeigt. Das Relais gemäß Figur 8 besitzt einen Sockel 1, auf welchem eine Kontaktanordnung 2 beweglich gelagert ist, welche ihrerseits mit einem Wippanker 3 fest verbunden ist. In dem Sockel sind hier nicht sichtbare feststehende Gegenkontaktelemente verankert, von denen lediglich die Anschlußelemente 11a und 12a sichtbar sind, außerdem Anschlußelemente 15 und 16 für bewegliche Mittel-Kontaktelemente, z. B. 21 und 22, die in einem Isolierstofftrager 20 der Kontaktanordnung 2 eingebettet und über diesen mit dem Anker 3 verbunden sind.FIGS. 8 to 10 show the base area of the relay with the armature and a modified bearing attachment. The relay according to FIG. 8 has a base 1 on which a contact arrangement 2 is movably mounted, which in turn is firmly connected to a rocker armature 3. In the base there are anchored fixed mating contact elements, of which only the connection elements 11a and 12a are visible, and also connection elements 15 and 16 for movable middle contact elements, e.g. B. 21 and 22, which are embedded in an insulating support 20 of the contact arrangement 2 and connected to the armature 3 via this.

Die Mittelkontaktelemente bilden zwei etwa senkrecht nach oben gebogene Lagerbänder 25 und 26, die als elektrische und mechanische Verbindung zum Sockel dienen und eine schwenkbare Lagerung des Ankers 3 bewirken. Zu diesem Zweck besitzen die Anschlußelemente 15 und 16 jeweils senkrecht nach oben angeformte Lagerstützen 151 und 161, welche weiterhin jeweils mit einer U-förmig gebogenen Verlängerung 152 und 162 versehen sind. Die Lagerbänder 25 und 26 sind mit den Lagerstützen 151 bzw. 161 über je einen Schweißpunkt 153 (Figur 10) verbunden, wobei durch die U-förmig gebogene Verlängerung 152 bzw. 162 eine Entlastung der Schweißstelle erreicht wird.The center contact elements form two bearing bands 25 and 26 which are bent approximately vertically upward and which serve as an electrical and mechanical connection to the base and cause the armature 3 to be pivoted. For this purpose, the connection elements 15 and 16 each have bearing supports 151 and 161 formed vertically upwards, which are furthermore each provided with a U-shaped extension 152 and 162. The bearing strips 25 and 26 are each connected to the bearing supports 151 and 161 via a welding point 153 (FIG. 10), with the U-shaped extension 152 and 162 relieving the pressure on the welding point.

Die Montage des Ankers kann nach einer ersten Variante so vorgenommen werden, daß die Verlängerung 152 (bzw. 162) zunächst nur um etwa 90° gegenüber der zugehörigen Lagerstütze 151 (bzw. 161) abgebogen ist, wenn der Anker 3 mit seinen Lagerbändern 25 bzw. 26 eingesetzt wird. Die Lagerbänder 25 bzw. 26 werden zunächst nur an der zugehörigen Lagerstütze 151 bzw. 161 vorfixiert oder angeheftet; das geschieht mittels einer Widerstandsschweißung, angedeutet durch den Schweißpunkt 154 in Figur 9, oder durch eine Verkerbung. Zweckmäßig ist aber auch eine Laserschweißung an der Endkante des Lagerbandes 25 bzw. 26. Anschließend wird die Verlängerung 152 bzw. 162 soweit heruntergebogen, daß die Endkante 155 bzw. 165 an dem Lagerband 25 bzw. 26 anliegt (siehe Figur 10). Die endgültige Befestigung der Lagerbander 25 und 26 an der zugehörigen Lagerstütze 151 bzw. 161 erfolgt dann mit einer Laserschweißung; dieser Schweißpunkt ist mit 153 bezeichnet.According to a first variant, the anchor can be installed in such a way that the extension 152 (or 162) initially is only bent by approximately 90 ° relative to the associated bearing support 151 (or 161) when the armature 3 with its bearing bands 25 or 26 is used. The bearing strips 25 and 26 are initially only fixed or attached to the associated bearing support 151 or 161; this is done by means of resistance welding, indicated by the welding point 154 in FIG. 9, or by a notching. However, laser welding at the end edge of the bearing band 25 or 26 is also expedient. The extension 152 or 162 is then bent down to such an extent that the end edge 155 or 165 abuts the bearing band 25 or 26 (see FIG. 10). The final fastening of the bearing strips 25 and 26 to the associated bearing support 151 or 161 is then carried out using laser welding; this welding point is designated 153.

In einer weiteren Variante, wie sie in den Figuren 11 und 12 gezeigt ist, wird zunächst die Verlängerung 152 bzw. 162 der Lagerstütze 151 bzw. 161 V-förmig gebogen und dabei bis auf etwa 20° geschlossen. Außerdem sind die beiden Lagerstützen 151 und 161 noch schräg nach außen gebogen, so daß sie zu der Bodenebene bzw. zu der Ebene der noch teilweise mit dem Sockel verbundenen Platine 100 einen Winkel von etwa 80° bilden. Dies ermöglicht es, den Anker mit der Kontaktanordnung und mit den Lagerbändern 25 bzw. 26 von oben zwischen die Lagerstüzen einzusetzen, wie in Figur 12 deutlich zu sehen ist. Nach dem Einsetzen der Ankerbaugruppe werden die Lagerstützen 151 und 161 nach innen gebogen, bis sie senkrecht zur Grundebene stehen und mit ihren V-förmig vorgebogenen Verlängerungen 152 bzw. 162 die Enden der Lagerbänder 25 bzw. 26 umfassen. Wenn die Ankerbaugruppe auf den richtigen Kontaktabstand eingestellt ist, werden die Verlängerungen 152 und 162 der Lagerstützen auf ihre endgültige U-Form zusammengepreßt, so daß sie die Enden der Lagerbänder 25 und 26 umfassen. Diese Lagerbander 25 und 26 besitzen jeweils warzenförmige Prägungen 156 bzw. 166 oder Biegungen, welche bei dieser Verformung der Verlängerungen 152 und 162 eine feste Verbindung mit den Lagerstützen 151 bzw. 161 nach Art einer Kaltverschweißung eingehen. Dadurch wird eine Vorfixierung der Verlängerungen 152 und 162 mit den Lagerbändern 25 bzw. 26 erreicht. Wie im vorhergehenden Fall wird dann die endgültige Fixierung, vorzugsweise durch Laserschweißung, vollzogen.In a further variant, as shown in FIGS. 11 and 12, the extension 152 or 162 of the bearing support 151 or 161 is first bent in a V-shape and closed in the process to approximately 20 °. In addition, the two bearing supports 151 and 161 are bent obliquely outwards so that they form an angle of approximately 80 ° to the floor plane or to the plane of the board 100 which is still partially connected to the base. This makes it possible to insert the anchor with the contact arrangement and with the bearing strips 25 and 26 from above between the bearing supports, as can be clearly seen in FIG. After the anchor assembly has been inserted, the bearing supports 151 and 161 are bent inwards until they are perpendicular to the base plane and, with their V-shaped extensions 152 and 162, embrace the ends of the bearing strips 25 and 26, respectively. When the armature assembly is set to the correct contact distance, the extensions 152 and 162 of the bearing supports are pressed into their final U-shape so that they encompass the ends of the bearing bands 25 and 26. These bearing strips 25 and 26 each have wart-shaped embossments 156 and 166 or bends which, when the extensions 152 and 162 are deformed, form a firm connection with the Bearing supports 151 and 161 are cold-welded. As a result, the extensions 152 and 162 are pre-fixed with the bearing strips 25 and 26, respectively. As in the previous case, the final fixation is then carried out, preferably by laser welding.

In beiden letztgenannten Varianten ist jeweils die abgebogene Verlängerung 152 bzw. 162 leicht konvex geformt, wie dies in Figur 10 am deutlichsten zu sehen ist. Auf diese Weise liegt nur die untere Kante 155 bzw. 165 der Verlängerung mit Druck an dem Lagerband 25 bzw. 26 an; dieses wird damit beidseitig im Bereich dieser Abschlußkante 155 bzw. 166 eingespannt, wodurch die eigentliche Schweißstelle 153 bei Bewegungen des Wippankers entlastet wird.In both of the latter variants, the bent extension 152 or 162 is slightly convex, as can be seen most clearly in FIG. 10. In this way, only the lower edge 155 or 165 of the extension rests with pressure on the bearing band 25 or 26; this is clamped on both sides in the area of this end edge 155 or 166, whereby the actual welding point 153 is relieved when the rocker armature moves.

Eine weitere zweckmäßige Abwandlung der Lagerbefestigung des Ankers zeigt Figur 13, wobei grundsätzlich die gleiche Ansicht wie in Figur 8 gezeigt ist. Auf einem Sockel 1 ist also ein Anker 3 mit einer Kontaktanordnung 2 angeordnet. Der Anker besitzt seitlich aus dem Kontaktträger 20 austretende Lagerbänder 25 und 26, deren elastischer Abschnitt in einen Endabschnitt 25a bzw. 26a übergeht, wobei zumindest letzterer senkrecht zur Grundebene steht und an einem ebenfalls senkrecht zur Grundebene stehenden Endabschnitt 175a bzw. 176a einer Lagerstütze 175 bzw. 176 anliegt. Den Endabschnitten 175a und 176a der Lagerstützen gegenüber ist eine zusätzliche Klemmplatte 177 bzw. 178 angeordnet, die den Endabschnitt 25a bzw. 26a des jeweiligen Lagerbandes einklemmt und mit ihrer Unterkante 177a bzw. 178a eine Einspannstelle zur Entlastung der Schweißstelle 179 bildet. Diese Schweißstelle 179 ist als Laserschweißpunkt im Bereich der aufeinandergeschichteten Seitenkanten der Endabschnitte 175a der Lagerstütze, 25a des Lagerbandes und der Klemmplatte 177 in einem gewissen Abstand von der Unterkante 177a angebracht. Ein weiterer Schweißpunkt 180 kann auch auf der Oberseite vorgesehen werden. In gleicher Weise ist das Lagerband 26 an der gegenüberliegenden Seite des Ankers befestigt.A further expedient modification of the bearing attachment of the armature is shown in FIG. 13, the same view as in FIG. 8 being shown in principle. An armature 3 with a contact arrangement 2 is thus arranged on a base 1. The armature has bearing bands 25 and 26 emerging laterally from the contact carrier 20, the elastic section of which merges into an end section 25a or 26a, at least the latter being perpendicular to the base plane and at an end section 175a or 176a of a bearing support 175 or 176 is present. Arranged opposite the end sections 175a and 176a of the bearing supports is an additional clamping plate 177 or 178, which clamps the end section 25a or 26a of the respective bearing belt and forms a clamping point with its lower edge 177a or 178a to relieve the welding point 179. This welding point 179 is attached as a laser welding point in the region of the stacked side edges of the end sections 175a of the bearing support, 25a of the bearing band and the clamping plate 177 at a certain distance from the lower edge 177a. Another welding spot 180 can also be provided on the top. In the same way, the bearing band 26 is attached to the opposite side of the armature.

Figur 14 zeigt eine Abwandlung des Lagerbereiches A, wobei eine Lagerplatte 187 durch eine U-förmige Abbiegung des Endabschnittes der Lagerstütze 175 erzeugt wurde. Ansonsten ist die Funktion und die Befestigung der Klemmplatte 187 genauso wie bei der Klemmplatte 177.FIG. 14 shows a modification of the bearing area A, a bearing plate 187 being produced by a U-shaped bend in the end section of the bearing support 175. Otherwise, the function and the fastening of the clamping plate 187 is the same as for the clamping plate 177.

Die Anordnung von Figur 14 mit dem U-förmig gebogenen Ende der Lagerstütze entspricht in etwa der Darstellung in den Figuren 8 bis 10. Jedoch ist bei der Ausführungsform gemäß Figur 14 der Biegebereich zwischen Lagerstütze 175a und Klemmplatte 187 im Querschnitt vermindert. Zu diesem Zweck wird die Lagerstütze vor dem Biegen von außen her mit einer Einprägung 181 versehen. Zusätzlich kann auch die Breite der Lagerstütze noch durch Einschnitte 182 (gestrichelt eingezeichnet) vermindert werden. Auf diese Weise kann die Lagerstütze 175 bzw. die Klemmplatte 187 mit geringen Kräften während der Montage gebogen werden, ohne daß dabei die maßgenaue Verankerung im Grundkörper beeinträchtigt wird. Es ist dabei auch nicht mehr erforderlich, gemäß Figur 9 zunächst eine Teilbiegung durchzuführen. Bei der Montage wird lediglich nach der Justierung des Ankers und der Lagerbänder 25 bzw. 26 die Endkante des Lagerbandes 25 bzw. 25a durch einen Laser-Schweißpunkt an den Abschnitt 175a der Lagerstütze geheftet, und dann wird die vorgeprägte Klemmplatte über das Ende des Lagerbandes gebogen. Der Schweißpunkt 179 wird wie vorher beschrieben erzeugt.The arrangement of FIG. 14 with the U-shaped bent end of the bearing support corresponds approximately to the illustration in FIGS. 8 to 10. However, in the embodiment according to FIG. 14 the cross-sectional area between the bearing support 175a and the clamping plate 187 is reduced. For this purpose, the bearing support is provided with an embossing 181 from outside before bending. In addition, the width of the bearing support can also be reduced by cuts 182 (shown in broken lines). In this way, the bearing support 175 or the clamping plate 187 can be bent with low forces during assembly without the dimensionally accurate anchoring in the base body being impaired. It is also no longer necessary to first carry out a partial bend according to FIG. 9. During assembly, the end edge of the bearing band 25 or 25a is only tacked to the section 175a of the bearing support by a laser welding point after the adjustment of the armature and the bearing bands 25 and 26, and then the pre-stamped clamping plate is bent over the end of the bearing band . The weld spot 179 is created as previously described.

Eine weitere Ausführungsmöglichkeit des Lagerbereiches zeigt Figur 15. Hier ist ebenfalls eine U-förmige Abbiegung zur Erzeugung einer Klemmplatte 188 vorgesehen, allerdings ist diese jetzt nicht über die Abschlußkante der Lagerstütze 175, sondern über deren Seitenkante gebogen. Auch in diesem Fall wird eine Entlastung des Schweißpunktes 180, der nunmehr oben liegt, erreicht.Another possible embodiment of the bearing area is shown in FIG. 15. Here, too, a U-shaped bend is provided to produce a clamping plate 188, but this is now not bent over the end edge of the bearing support 175, but over the side edge thereof. In this case too, the welding point 180, which is now at the top, is relieved.

Wie in Figur 16 gezeigt ist, könnte zur Entlastung der Schweißstelle 179 auch ein zusätzlich aufgesetztes, U-förmiges Klemmelement 189 verwendet werden, welches auf diese Weise eine Klemmplatte 190 bildet. Der Schweißpunkt 179 sitzt an der gleichen Stelle wie in Figur 14.As shown in FIG. 16, an additional, U-shaped clamping element 189 could also be used to relieve the welding point 179, which in this way forms a clamping plate 190. The welding point 179 is located at the same location as in FIG. 14.

In Figur 17 ist eine weitere Möglichkeit gezeigt, um ohne zusätzliche Klemmplatte die Schweißstelle zu entlasten. In diesem Fall ist zwar wie vorher ein flexibler Abschnitt 25d des Lagerbandes 25 zwischen dem Kontaktträger 20 und der Lagerstütze 175 angeordnet; dieser liegt auch so, daß eine Tangentialebene an jedem Punkt des Lagerbandes parallel zur Schwenkachse des Ankers steht. Jedoch ist nunmehr ein Endabschnitt 25b über eine Endkante 175b der Lagerstütze 175 hinweg in die Senkrechte gebogen und auf der dem flexiblen Bereich gegenüberliegenden Seite der Lagerstütze mit einem Schweißpunkt 191 befestigt. Da das Lagerband an der Kante 175b anliegt, ist auch in diesem Fall der Schweißpunkt 191 bei Bewegung des Ankers entlastet.A further possibility is shown in FIG. 17 in order to relieve the welding point without an additional clamping plate. In this case, as before, a flexible section 25d of the bearing band 25 is arranged between the contact carrier 20 and the bearing support 175; this is also such that a tangential plane is parallel to the pivot axis of the armature at each point of the bearing band. However, an end section 25b is now bent over an end edge 175b of the bearing support 175 into the vertical and is fastened with a welding spot 191 on the side of the bearing support opposite the flexible region. Since the bearing band rests on the edge 175b, the welding point 191 is relieved in this case too when the armature moves.

In einer Abwandlung der Ausführungsform von Figur 17 ist gemäß Figur 18 am Ende des Lagerbandes 25 ein seitlicher Lappen 25c abgebogen und an der Außenseite der Lagerstütze 175 verschweißt (Schweißpunkt 192). Auch in diesem Fall steht der Endabschnitt 25a ebenso wie der abgebogene Lappen 25c senkrecht zur Grundebene, ermöglicht also eine Justierung vor dem Befestigen. Trotzdem ist auch in diesem Fall der Schweißpunkt 192 von dem flexiblen Abschnitt 25d des Lagerbandes 25 entkoppelt.In a modification of the embodiment of FIG. 17, a lateral tab 25c is bent at the end of the bearing band 25 and welded to the outside of the bearing support 175 (welding point 192). In this case, too, the end section 25a, like the bent tab 25c, is perpendicular to the base plane, thus allowing adjustment before fastening. Nevertheless, the welding point 192 is decoupled from the flexible section 25d of the bearing belt 25 in this case as well.

Figur 19 zeigt eine weitere Möglichkeit der Befestigung des Lagerbandes 25 an der Lagerstütze 175. Gezeigt ist dabei die Ausführungsform gemäß Figur 8 oder Figur 14, wobei die Lagerstütze 175 an ihrem Ende U-förmig über das Ende des Lagerbandes 25 gebogen ist, um dieses festzuhalten. Anstelle des vorher gezeigten Laser-Schweißpunktes wird nunmehr das gekrümmte Ende der Lagerstütze 175 bzw. der Lagerplatte 187 einschließlich der zwischen beiden eingeklemmten Endkante des Lagerbandes 25 zu einem Schweißkopf 193 verschmolzen. Dies kann vorzugsweise durch WIG-Schweißen (Widerstand-Inertgas-Schweißen) oder mit einem anderen Schweißverfahren erfolgen.FIG. 19 shows a further possibility of fastening the bearing band 25 to the bearing support 175. The embodiment shown in FIG. 8 or FIG. 14 is shown, the bearing support 175 being bent at its end in a U-shape over the end of the bearing band 25 in order to hold it in place . Instead of the laser welding point previously shown, the curved end of the bearing support 175 or the bearing plate 187 is now inclusive the fused between the two clamped end edge of the bearing band 25 to form a welding head 193. This can preferably be done by TIG welding (resistance inert gas welding) or by another welding method.

Generell sei noch darauf hingewiesen, daß neben dem beschriebenen Schweißverfahren auch andere Befestigungsmöglichkeiten für die Lagerbänder in Betracht kommen, beispielsweise Lötverfahren, eventuell auch Klebeverfahren, wenn die Lagerbänder nicht als Stromzuführung dienen, aber auch mechanische Fügeverfahren mit nietartiger Verformung der zu verbindenden Teile.In general, it should also be pointed out that in addition to the welding process described, other fastening options for the bearing belts are also possible, for example soldering processes, possibly also adhesive processes if the bearing belts do not serve as power supply, but also mechanical joining processes with rivet-like deformation of the parts to be connected.

Claims (20)

  1. Polarized electromagnetic relay having
    - a base (1) which is made of insulating material, defines a basic plane with its bottom side and in which are secured at least two stationary mating contact elements (11, 12, 13, 14) as well as two metallic bearing supports (15b, 16b) for an armature,
    - a coil (5), which is secured on the base (1) and has an axis parallel to the basic plane, a core (6) and two pole shoes (7) connected to the ends of the core,
    - a permanent magnet arrangement (4) which forms, in the region of the coil centre, a centre pole having a first pole direction (N) and produces at each of the pole shoes poles having a pole direction (S) opposite to said first pole direction,
    - a flat rocker armature (3), which is arranged approximately parallel to the coil axis between the base on the one hand and the coil and the permanent magnet arrangement on the other hand and is pivotably mounted approximately in the centre thereof about a centre axis which is parallel to the basic plane, and
    - a contact arrangement (2), which is permanently connected to the armature, has at least two movable contact elements (21, 22, 23, 24), which are embedded in an insulating material carrier (20) and optionally cooperate with in each case one of the mating contact elements (11, 12, 13, 14), and have two bearing elements (25, 26) which are embedded in the insulating material carrier (20), issue at opposite sides of the armature (3) and are connected to the bearing supports (15b, 16b),
    characterized in that the bearing elements are designed as flat bearing strips (25, 26) which extend at least with a securing section at right angles to the basic plane, and in that the bearing supports (15b, 16b) form vertical bearing faces, against which the securing sections of the bearing strips (25, 26) lie flat, and are secured in a vertical position which can be set in a continuously variable manner.
  2. Relay according to Claim 1, characterized in that the bearing strips (25, 26) are each embedded in lateral projections (28) of the insulating material carrier (20), issue from the latter in a direction parallel to the longitudinal direction of the armature, are bent in a direction at right angles to the basic plane and are secured on the bearing supports (15b, 16b) extending parallel to said direction.
  3. Relay according to Claim 1 or 2,
    characterized in that the two bearing strips (25, 26) each extend with a flexible section next to the armature (3) in such a way that, at every point of this section, the tangential plane lies parallel to the axis of rotation of the armature, that is to say the flexible section is subjected to bending stress in the event of movement of the armature.
  4. Relay according to one of Claims 1 to 3,
    characterized in that the bearing strips (25, 26) are each connected to at least one of the movable contact elements (21, 22, 23, 24) and the bearing supports (15b, 16b) are connected to connection elements (15, 16) for the movable contact elements (21, 22, 23, 24).
  5. Relay according to one of Claims 1 to 4,
    characterized in that the insulating material carrier (20) with the movable contact elements (21, 22, 23, 24) is arranged parallel to and underneath the armature (3) and is secured by means of formed journals (27) in recesses (34) of the armature.
  6. Relay according to one of Claims 1 to 5,
    characterized in that the stationary mating contact elements (11, 12, 13, 14) and, if appropriate, the connection elements (15, 16) for the movable contact elements (21, 22, 23, 24) are embedded into the base (1) jointly in a circuit board plane, and in that, in each case, connection pins (11a, 12a, 13a, 14a, 15a, 16a) are bent downward from the base and the bearing supports (15b, 16b) are bent upward.
  7. Relay according to one of Claims 1 to 6,
    characterized in that a coil former (50) which carries the coil winding (57) has flanges (51, 52) at both ends, which flanges are secured by downwardly directed projections (53) with a press fit together with corresponding walls of the base (1) in a manner engaging one into the other in the form of a box.
  8. Relay according to one of Claims 1 to 7,
    characterized in that the end section (25a, 26a) of the respective bearing strip (25, 26) is clamped between the associated bearing support (151, 161; 175, 176) and an opposite clamping plate (152, 162; 177; 178; 187; 188; 190), which defines with an end edge (155, 165; 177a, 178a) a clamping point for the bearing strip before the securing point thereof.
  9. Relay according to Claim 8,
    characterized in that the clamping plate (152, 162; 187; 188) is formed by an end section of the bearing support (151, 161; 175), which end section is bent over in the shape of a U and reaches around the end section of the bearing strip on its terminating edge or laterally.
  10. Relay according to Claim 9,
    characterized in that the cross section of the bend section (181) between the actual bearing support (175) and the clamping plate (187) is reduced.
  11. Relay according to Claim 8, characterized in that the clamping plate (190) is part of a U-shaped clamp (189) plugged onto the free ends of the bearing support (175) and of the bearing strip (25).
  12. Relay according to one of Claims 8 to 11,
    characterized in that the securing of the bearing strip (25) is carried out by means of a weld (179; 180) which fuses the side edges, resting against one another, of the bearing support (175), of the bearing strip (25) and of the clamping plate (177; 187; 188).
  13. Relay according to one of Claims 3 to 8,
    characterized in that the bearing strip (25) is arranged with the flexible section (25d) between the armature and the bearing support (175) and is secured, by an end section (25b; 25c) reaching around the bearing support (175), on a side of the bearing support which faces away from the flexible section (25d).
  14. Method for producing a relay according to one of Claims 1 to 13,
    characterized by the following steps:
    a) the armature (3) connected to the contact arrangement (2) is arranged on the base (1) in such a way that the bearing strips (25, 26) rest, with the capability of being displaced vertically, against the bearing supports (15b, 16b);
    b) a predetermined contact separation (29) is set by vertically displacing the armature (3);
    c) the bearing strips (25, 26) are connected to the bearing supports (15b, 16b) in the set position of the armature;
    d) the coil (5) equipped with the core (6), the pole shoes (7) and the permanent magnet (4) is pushed onto the base (1) from above until predetermined operating air gaps of the armature (3) are achieved.
  15. Process according to Claim 14,
    characterized in that the armature (3) with the contact arrangement (2) is initially placed onto the base (1) in such a way that all of the contacts (11, 21; 12, 22; 13, 23; 14, 24) are closed by an excess stroke, in that the armature (3) is then raised by a predetermined amount (29) and in that the bearing strips (25, 26) are finally welded to the bearing supports (15b, 16b).
  16. Method according to Claim 14 or 15,
    characterized in that after the contact separation has been set, the bearing strips (25, 26) are initially prefixed by a weld on the bearing support, in that an end section of the bearing support is then bent, to form a clamping plate, in the shape of a U over an end edge of the bearing strip, and in that the sections, resting against one another, of the bearing support, of the bearing strip and of the clamping plate are finally welded together.
  17. Method according to Claim 14 or 15,
    characterized in that after the contact separation has been set, the free end sections of the bearing supports are bent, to form a clamping plate, in the shape of a U over the end section of the bearing support, embossed or bent projections (156, 166) of the bearing strips (25, 26) attaining a permanent connection for pre-fixing to the bearing supports (151, 161), and in that afterwards the bearing strips (25, 26) are welded to the bearing supports (151, 161).
  18. Method according to one of Claims 14 to 17,
    characterized in that the bearing supports (151, 161) with extensions (152, 162) bent over in the shape of a V are initially bent outward at an acute angle until the armature (3) having the bearing strips (25, 26) can be inserted between said supports, and in that the bearing supports (151, 161) are then bent into the vertical with respect to the bottom plane, in such a way that the extensions embrace the bearing strips (25, 26).
  19. Method according to one of Claims 14 to 18,
    characterized in that one or more welds (179, 180), in particular laser welds, are produced in the edge region of the bearing strips and of the bearing supports for the purpose of securing the bearing strips (25, 26).
  20. Method according to one of Claims 14 to 18,
    characterized in that in each case the end sections of the bearing strips are connected by TIG welding to the associated bearing support and, if appropriate, the clamping plate for the purpose of securing said bearing strips.
EP94910337A 1993-03-24 1994-03-16 Polarized electromagnetic relay Expired - Lifetime EP0691030B1 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE4309619 1993-03-24
DE4309619 1993-03-24
DE4324857 1993-07-23
DE4324857 1993-07-23
PCT/DE1994/000288 WO1994022156A1 (en) 1993-03-24 1994-03-16 Polarized electromagnetic relay

Publications (2)

Publication Number Publication Date
EP0691030A1 EP0691030A1 (en) 1996-01-10
EP0691030B1 true EP0691030B1 (en) 1996-12-11

Family

ID=25924310

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94910337A Expired - Lifetime EP0691030B1 (en) 1993-03-24 1994-03-16 Polarized electromagnetic relay

Country Status (9)

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US (1) US5617066A (en)
EP (1) EP0691030B1 (en)
JP (1) JP3112945B2 (en)
AT (1) ATE146302T1 (en)
CA (1) CA2158978A1 (en)
CZ (1) CZ284682B6 (en)
DE (2) DE4408980B4 (en)
ES (1) ES2095754T3 (en)
WO (1) WO1994022156A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19705508C1 (en) * 1997-02-13 1998-08-20 Siemens Ag Electromagnetic relay
DE19705506C1 (en) * 1997-02-13 1998-10-01 Siemens Ag Contact spring arrangement for actuation by a rocker armature
DE19850667C1 (en) * 1998-11-03 2000-04-27 Siemens Ag Small electromagnetic relay with rocking armature
DE19850668C1 (en) * 1998-11-03 2000-05-11 Siemens Ag Small monostable polarised electromagnetic relay

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DE19520220C1 (en) * 1995-06-01 1996-11-21 Siemens Ag Polarized electromagnetic relay
EP0780870A3 (en) 1995-12-21 1998-10-07 Siemens Aktiengesellschaft Small sized monostable electromagnetic relay
DE19615185C1 (en) * 1996-04-17 1997-06-19 Siemens Ag Electromagnetic relay e.g. of the polarised miniature type
DE19626982C1 (en) * 1996-07-04 1997-09-25 Siemens Ag Electromagnetic relay and mfg. method
DE19713659C1 (en) * 1997-04-02 1998-06-25 Siemens Ag Vertical structure electromagnetic relay
JPH10334783A (en) * 1997-05-30 1998-12-18 Takamisawa Denki Seisakusho:Kk Electromagnetic relay and contact spring set thereof
DE19727863C1 (en) * 1997-06-30 1999-01-21 Siemens Ag Electromagnetic relay
DE19825077C1 (en) * 1998-06-04 2000-03-30 Siemens Ag Polarized electromagnetic relay
DE19825078C1 (en) * 1998-06-04 2000-03-09 Siemens Ag Polarized electromagnetic relay
US7111929B2 (en) * 2001-08-14 2006-09-26 Hewlett-Packard Development Company, Lp Magnetically-actuated fluid control valve
JP4052015B2 (en) 2002-05-23 2008-02-27 オムロン株式会社 High frequency relay
DE102006053840B3 (en) * 2006-11-14 2008-06-12 Tyco Electronics Amp Gmbh Electrical switching element, in particular relay, for simultaneous switching of several circuits
JP4888211B2 (en) * 2007-04-25 2012-02-29 オムロン株式会社 Electromagnetic relay
JP6458705B2 (en) 2015-10-29 2019-01-30 オムロン株式会社 relay
JP6414019B2 (en) 2015-10-29 2018-10-31 オムロン株式会社 relay
JP6471678B2 (en) * 2015-10-29 2019-02-20 オムロン株式会社 Contact piece unit and relay
DE102016122577A1 (en) * 2016-11-23 2018-05-24 Endress+Hauser SE+Co. KG Printed circuit board and method for producing the printed circuit board
JP7076410B2 (en) * 2019-08-02 2022-05-27 ヒロセ電機株式会社 Connector assembly

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FR2491254A1 (en) * 1980-09-30 1982-04-02 Thomson Csf Miniature electromagnetic relay - has pallette entraining and electrically insulated from contact leaves by thin insulating sheets
JPS61218025A (en) * 1985-03-25 1986-09-27 松下電工株式会社 Polar relay
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JPH07506696A (en) * 1992-05-15 1995-07-20 シーメンス アクチエンゲゼルシヤフト polarized power relay

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19705508C1 (en) * 1997-02-13 1998-08-20 Siemens Ag Electromagnetic relay
DE19705506C1 (en) * 1997-02-13 1998-10-01 Siemens Ag Contact spring arrangement for actuation by a rocker armature
DE19850667C1 (en) * 1998-11-03 2000-04-27 Siemens Ag Small electromagnetic relay with rocking armature
DE19850668C1 (en) * 1998-11-03 2000-05-11 Siemens Ag Small monostable polarised electromagnetic relay

Also Published As

Publication number Publication date
ATE146302T1 (en) 1996-12-15
DE4408980B4 (en) 2004-03-25
ES2095754T3 (en) 1997-02-16
WO1994022156A1 (en) 1994-09-29
JPH08508133A (en) 1996-08-27
US5617066A (en) 1997-04-01
CZ246995A3 (en) 1998-10-14
EP0691030A1 (en) 1996-01-10
CZ284682B6 (en) 1999-02-17
DE4408980A1 (en) 1994-09-29
CA2158978A1 (en) 1994-09-29
DE59401271D1 (en) 1997-01-23
JP3112945B2 (en) 2000-11-27

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