EP0910861A1 - Process for manufacturing an electromagnetic relay - Google Patents

Process for manufacturing an electromagnetic relay

Info

Publication number
EP0910861A1
EP0910861A1 EP97931620A EP97931620A EP0910861A1 EP 0910861 A1 EP0910861 A1 EP 0910861A1 EP 97931620 A EP97931620 A EP 97931620A EP 97931620 A EP97931620 A EP 97931620A EP 0910861 A1 EP0910861 A1 EP 0910861A1
Authority
EP
European Patent Office
Prior art keywords
shell
fixed contact
coil
shells
sheet metal
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.)
Granted
Application number
EP97931620A
Other languages
German (de)
French (fr)
Other versions
EP0910861B1 (en
Inventor
Josef Kern
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.)
TE Connectivity Solutions GmbH
Original Assignee
Siemens AG
Siemens Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Siemens AG, Siemens Corp filed Critical Siemens AG
Publication of EP0910861A1 publication Critical patent/EP0910861A1/en
Application granted granted Critical
Publication of EP0910861B1 publication Critical patent/EP0910861B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • H01H11/0056—Apparatus or processes specially adapted for the manufacture of electric switches comprising a successive blank-stamping, insert-moulding and severing operation
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/02—Bases; Casings; Covers
    • H01H50/04—Mounting complete relay or separate parts of relay on a base or inside a case
    • H01H50/041—Details concerning assembly of relays
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H50/00—Details of electromagnetic relays
    • H01H50/02—Bases; Casings; Covers
    • H01H50/023—Details concerning sealing, e.g. sealing casing with resin
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/4902—Electromagnet, transformer or inductor
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/4902—Electromagnet, transformer or inductor
    • Y10T29/49073—Electromagnet, transformer or inductor by assembling coil and core
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49105—Switch making
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y10T29/49117—Conductor or circuit manufacturing
    • Y10T29/49121—Beam lead frame or beam lead device

Definitions

  • the invention relates to a method for producing an electromagnetic relay
  • a coil penetrated by a core with a winding and with connecting pins, the core forming pole plates at both ends outside the coil, - An armature bridging the pole plates to form working air and
  • EP 0 531 890 AI describes a switching relay and a method for its production, the relay elements being arranged in the above-mentioned manner in a two-part housing.
  • the two housing parts there do not form a closed housing, but are merely a base, which is preferably a printed circuit board with an integrally formed side wall, and a cover part, between which a housing gap remains open even after the assembly.
  • the relay there is preferably designed as a multiple relay with a series of magnet systems lying next to one another, a common core pole plate lying on the base and forming a series of vertically projecting core sections, each of which is fitted with a coil.
  • Each system also has a U-shaped armature, which is mounted on the core pole plate and encloses the coil in a frame shape with the contact spring.
  • the cover part has slots with inserted mating contact elements and spring supports, these slots also not being tight.
  • a conventional manufacturing technique is used for the relay there, the individual elements being subsequently attached to one or the other housing part by plugging, riveting or in a similar manner.
  • the aim of the present invention is an inexpensive manufacture of relays of the type mentioned for different sizes and applications. In this case, high manufacturing accuracies for the mechanical relay characteristic values are to be achieved without the need for a separate adjustment process.
  • the coil provided with the core is embedded with its connecting pins to form a first housing half-shell in plastic;
  • a spring support for the contact spring and at least one fixed contact element are embedded in plastic to form a second housing half-shell;
  • the anchor is inserted in one of the two half-shells and
  • all parts are manufactured by injection molding or assembled. This achieves a high level of manufacturing accuracy, since the precise injection mold specifies the position tolerance of the individual parts.
  • These individual parts are preferably made from flat sheet metal strips and overmolded in succession or simultaneously. This injection molding assembly is particularly well suited for a production by cycle Injection molding of parts connected on the belt, which means that large quantities can be manufactured at a reasonable price.
  • FIG. 1 shows a relay produced in accordance with the invention in a perspective, partially cut-open representation
  • FIG. 2 shows a sheet metal strip with partially cut-out core yoke sheets
  • FIG. 4 shows a sheet metal strip with bobbins that are partially wound
  • FIG. 5 shows a sheet metal strip from FIG. 4 with wound bobbins that are partially molded with plastic to form a first housing half-shell
  • FIG. 6 shows a separated first half-shell in a view rotated in relation to FIG. 5
  • FIG. 7 shows a finished second half-shell
  • FIG. 8 shows a contact sheet strip with partially punched-out fixed contact elements in two toothed rows
  • FIG. 9 shows a separated row of fixed contact elements connected to a sheet metal strip
  • FIG Formation of second half shells by overmolding of fixed contact elements and spring supports
  • FIG. 11 shows a series of contact springs punched out on the band and provided with an anchor
  • FIG. 12 shows a row of second housing half-shells connected to the belt, which are provided with a spring anchor unit,
  • FIG. 13 shows a modified form of a spring anchor unit
  • FIG. 14 shows a schematic illustration of a modified version of a housing half-shell in section in an injection mold
  • FIG. 15 shows a relay completed by stacking two housing half-shells in a section through the armature
  • FIG. 16 shows a modified Aufet 'approximate shape of a relay according to the invention in perspective view.
  • Figure 1 shows a relay manufactured with the inventive method. It consists of a first half-shell 1 and a second half-shell 2, the half-shell 1 being formed by overmolding a coil 3, namely a coil former 31 with a winding 34, and the second half-shell is formed by overmolding a spring support 21 and two fixed contact elements 22 and 23.
  • An L-shaped contact spring 4 is fastened to the spring support 21 with two legs 41 and 42, which in turn carries an armature 5.
  • the ends of the approximately Z-shaped armature 5 each form working air gaps with two pole faces 63 and 64 of two pole plates 61 and 62, which are part of a U-shaped core 6, the pole plate 62 being bent upward from the core plane .
  • FIG. 2 shows the production of core yoke sheets 6, which are successively cut and bent from a soft magnetic sheet metal strip 60 in the production cycle.
  • FIG. 3 shows the sheet metal strip 6 with the core yoke sheets 6 in a later process stage, but still in a continuous manner.
  • the core yoke plates 6 are already overmolded with a thermoplastic, so that a coil former 31 is formed in such a way that the two pole plates 61 and 62 are free of plastic.
  • two pins 32 and 33 are also embedded, which are also related to a sheet metal strip 30.
  • connection sections 32b and 33b are also saved in the coil former which are later contacted to the winding ends.
  • the coil connecting pins 32 and 33 on the one hand and the core yoke plate 6 on the other hand could also be produced from a common soft magnet sheet metal strip, the separation being able to be carried out in a corresponding manner after the extrusion coating.
  • the coil former units formed by extrusion coating are separated on one side, for example from the sheet metal strip 60, so that they are only connected on one side, for example via the sheet metal strip 30 according to FIG. 4. In this state, they are gradually provided with the winding 34, the winding ends being connected to the terminal portions 32b and 33b.
  • the coil units according to FIG. 5 are gradually overmolded in the production cycle with a thermoplastic to form the half-shells 1, as shown in FIG. 5.
  • These overmolded half-shells 1 are still connected via the metal strip 30.
  • the individual half-shells are then separated from the sheet metal strip, and the cut-out coil connecting pins 32 and 33 are angled, as shown in another view in FIG. 6.
  • the coil including the winding is now completely encased in the plastic of the first half-shell 1, only the pole faces of the pole sheets 61 and 62 being kept free from the plastic.
  • the second housing half-shell 2 of the relay is shown in FIG. 7 in the finished state.
  • the following figures show individual process sections in their manufacture. 8 shows the extraction of fixed contact elements 22 and 23 from a sheet metal strip 20 which is plated with a central strip 20C made of contact material, for example AgNi015, AgSn0 2 or the like.
  • the contact material layer 20C is plated as an inlay in the strip material 20 so that it does not form a surface increase, as a result of which the contact elements can be easily sealed in the injection mold.
  • the fixed contact elements 22 and 23 are cut out like a zipper from the inlaid band 20 so that the precious metal portion of the plated layer 20C is optimally used.
  • FIG. 9 shows a contact strip 20A detached from the composite with the partially cut-off fixed contact elements 22 and their contact-making zone 22c.
  • the mutually twisted contact strips 20A and 20C are extrusion-coated with the plastic material of the second half-shell 2, the plated sections 22c and 23c facing each other. Due to the asymmetrical design of the fixed contact elements 22 and 23, the contacting sections 22c and 23c lie one above the other, while their connecting ends 22a and 23a lie offset in the wall of the half-shell 2.
  • spring supports 21 are also injected, which are likewise connected to a common sheet-metal strip 10.
  • the spring supports 21 each have a fastening tab 44 bent open at right angles for the contact spring, which will be described later.
  • the second half-shell forms a cavity for receiving the movable armature-spring unit 4, 5, which is shown in FIG. 11.
  • 11a shows a spring band 40, from which the individual contact springs 4 are gradually cut free, bent and provided with the movable contacts 43 in the production cycle.
  • the armature 5 which is also cut from sheet metal and pre-bent, is fastened to the contact spring, for example via a welding point 51.
  • This armature-contact spring unit is then arranged in the second half-shell on the spring support 21 and fastened, for example, via a welding point 46 (FIG. 12) .
  • the connection of the contact spring 4 to the armature 5 can, however, also be carried out by injection molding around with an insulating material sheath 52, as shown in FIG. In this way, electrical insulation between the contact spring 4 and the armature 5 or the magnet system is also achieved.
  • the distance between the two flat contact strips 20A and 20B is achieved with the high accuracy of a slide in the tool, so that there is an adjustment-free contact position in the later relay.
  • the relay construction is arranged in the two half shells so that the contact surfaces are perpendicular in the second half shell.
  • a corresponding arrangement is shown schematically in FIG. 14, where a lower half-shell 102 is formed between two mold halves 110 and 120. Two fixed contact elements 122 and 132 with corresponding inlay contact layers are arranged in this lower half-shell in such a way that they are perpendicular to the mold parting plane 130.
  • a molded projection 111 gives the precisely specified contact distance a between the two fixed contact elements 122 and 132 and seals the contact area well, since the pressure of the thermoplastic injection molding compound 103 for the half-shell 102 presses the two fixed contact elements 122 and 132 against this spacing projection.
  • a peripheral wall 12 of the half-shell 1 engages in a box-like manner over the half-shell 2, which for this purpose has a web 24 which runs around the inside.
  • one of the half-shells also has a circumferential rib 25 which is deformed during the joining, for example by means of ultrasound, and creates a tight connection between the two half-shells. Sealing is very easy in this way, as all connections have been made beforehand are overmolded in the respective half-shell and the joining plane is formed by thermoplastic plastic of the two half-shells.
  • the pull-through voltage of the armature is measured, the armature being attracted to the pole faces 63 and 64 of the pole plates 61 and 62.
  • a predetermined characteristic value of the pull-through voltage as a measure of the erosion size or the overstroke of the contact is reached, the joining process is ended.
  • the relay is adjusted and sealed at the same time.
  • the joint seam on one level without a height difference ensures that the two half-shells can be securely sealed, but also with other technologies, for example by gluing, clamping, casting or using an elastomer seal that can be molded onto a half-shell using the two-component injection molding process.
  • the pins of the relay are arranged on two opposite sides of the housing and bent downwards at right angles. In this way, they can be used as solder pins or can also be used as SMT connectors by further bending them horizontally. With a corresponding modification of the construction, however, a different connection geometry is also possible, so that, if necessary, all connection elements emerge on one housing side. These can of course be designed both as solder pins and as flat tabs.
  • a variant of the relay is shown in FIG. 16, with all connections emerging from the housing on only one side and the parting plane extending perpendicularly to the connection side of the relay.
  • a first half-shell 201 contains the magnet system with coil pins 232 and 233, while the second half-shell 202 carries the contact system with contact pins 221, 222 and 223.
  • the two half-shells are joined together along a parting plane 203, with a corresponding one also here Construction can be done by assembling an adjustment.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electromagnets (AREA)
  • Manufacture Of Switches (AREA)
  • Insulated Conductors (AREA)

Abstract

The relay is formed from two half-shells which are formed by extrusion coating the functional elements with plastic. A first half-shell is formed by extrusion coating a coil with a U-shaped core, while a second half-shell is formed by extrusion coating a spring support and at least one fixed contact element. A contact spring having a flat armature is attached to the spring support. The relay is adjusted and at the same time sealed by the process of joining the two half-shells.

Description

Beschreibungdescription

Verfahren zur Herstellung eines elektromagnetischen RelaisMethod of manufacturing an electromagnetic relay

Die Erfindung betrifft ein Verfahren zur Herstellung eines elektromagnetischen Relais mitThe invention relates to a method for producing an electromagnetic relay

- einer von einem Kern durchsetzten Spule mit einer Wicklung und mit Anschlußstiften, wobei der Kern an beiden Enden außerhalb der Spule Polbleche bildet, - einem die Polbleche unter Bildung von Arbeitsluf spalten überbrückenden Anker und- A coil penetrated by a core with a winding and with connecting pins, the core forming pole plates at both ends outside the coil, - An armature bridging the pole plates to form working air and

- einer Kontaktanordnung mit einer von dem Anker betätigten Kontaktfeder sowie mindestens einem mit der Kontaktfeder zusammenwirkenden Festkontaktelemen .- A contact arrangement with a contact spring actuated by the armature and at least one fixed contact element interacting with the contact spring.

In der EP o 531 890 AI sind ein Schaltrelais sowie ein Verfahren zu dessen Herstellung beschrieben, wobei in einem zweiteiligen Gehäuse die Relaiselemente in der oben genannten Art angeordnet sind. Die beiden Gehäuseteile bilden dort al- lerdings kein geschlossenes Gehäuse, sondern es handelt sich lediglich um eine Basis, die vorzugsweise eine Leiterplatte mit angeformter Seitenwand ist, und einen Deckelteil, zwischen denen auch nach dem Zusammenfügen ein Gehäusespalt offenbleibt. Vorzugsweise ist das dortige Relais als Vielfach- relais mit einer Reihe von nebeneinanderliegenden Magnetsystemen ausgebildet, wobei eine gemeinsame Kernpolplatte auf dem Sockel liegt und eine Reihe von senkrecht abstehenden Kernabschnitten bildet, auf die jeweils eine Spule aufgesteckt wird. Jedes System besitzt außerdem einen U-förmigen Anker, der an der Kernpolplatte gelagert wird und mit der Kontaktfeder die Spule rahmenförmig umschließt. Der Deckelteil weist Schlitze mit eingesteckten Gegenkontaktelementen und Federträgern auf, wobei diese Schlitze ebenfalls nicht dicht sind. Generell ist bei dem dortigen Relais eine her- kömmliche Fertigungstechnik angewandt, wobei die Einzelelemente nachträglich auf dem einen oder dem anderen Gehäuseteil durch Aufstecken, Vernieten oder auf ähnliche Weise befestigt werden. Ziel der vorliegenden Erfindung ist eine kostengünstige Herstellung von Relais der eingangs genannten Art für unterschiedliche Größen und Anwendungen. Dabei sollen hohe Ferti- gungsgenauigkeiten für die mechanischen Relaiskennwerte erreicht werden, ohne daß ein eigener Arbeitεgang zur Justierung erforderlich ist.EP 0 531 890 AI describes a switching relay and a method for its production, the relay elements being arranged in the above-mentioned manner in a two-part housing. However, the two housing parts there do not form a closed housing, but are merely a base, which is preferably a printed circuit board with an integrally formed side wall, and a cover part, between which a housing gap remains open even after the assembly. The relay there is preferably designed as a multiple relay with a series of magnet systems lying next to one another, a common core pole plate lying on the base and forming a series of vertically projecting core sections, each of which is fitted with a coil. Each system also has a U-shaped armature, which is mounted on the core pole plate and encloses the coil in a frame shape with the contact spring. The cover part has slots with inserted mating contact elements and spring supports, these slots also not being tight. In general, a conventional manufacturing technique is used for the relay there, the individual elements being subsequently attached to one or the other housing part by plugging, riveting or in a similar manner. The aim of the present invention is an inexpensive manufacture of relays of the type mentioned for different sizes and applications. In this case, high manufacturing accuracies for the mechanical relay characteristic values are to be achieved without the need for a separate adjustment process.

Erfindungsgemäß wird dieses Ziel mit einem Verfahren er- reicht, das folgende Schritte aufweist:According to the invention, this aim is achieved with a method which has the following steps:

- die mit dem Kern versehene Spule wird mit ihren Anschlußstiften unter Bildung einer ersten Gehäuse-Halbschale in Kunststoff eingebettet;- The coil provided with the core is embedded with its connecting pins to form a first housing half-shell in plastic;

- ein Federträger für die Kontaktfeder und mindestens ein Festkontaktelement werden unter Bildung einer zweiten Gehäuse-Halbschale in Kunststoff eingebettet;- A spring support for the contact spring and at least one fixed contact element are embedded in plastic to form a second housing half-shell;

- der Anker wird in eine der beiden Halbschalen eingesetzt und- The anchor is inserted in one of the two half-shells and

- die beiden Halbschalen werden mit ihren Rändern aufeinan- derliegend dicht verbunden.- The edges of the two half-shells are joined tightly together.

Durch die erfindungsgemäß vorgesehene Herstellung des Re- laisgehäuses in Form von zwei Halbschalen aus Kunststoff, in welchen die Funktionselemente durch Einbetten verankert sind, erreicht man nicht nur eine positionsgenaue Fixierung aller Teile, sondern zugleich auch eine einfache und wirkungsvolle Abdichtung des Gehäuses, da die Anschlußelemente des Relais alle bereits durch die Einbettung dicht abgeschlossen sind und die Ränder der beiden Halbεchalen nur in Form leicht ab- zudichtender KunststoffOberflächen aufeinander liegen. Vorzugsweise werden alle Teil durch Spritzgießmontage hergestellt bzw. ineinandergefügt. Dadurch erreicht man eine hohe Fertigungsgenauigkeit, da die genaue Spritzgießform die Lagetoleranz der Einzelteile vorgibt. Diese Einzelteile werden vorzugsweise aus flachen Blechbändern gefertigt und nacheinander oder gleichzeitig umspritzt. Diese Spritzgießmontage eignet sich besonders gut zu einer Fertigung durch taktweises Umspritzen von am Band zusammenhängenden Teilen, wodurch große Stückzahlen entsprechend preiswert hergestellt werden können .The manufacture of the relay housing according to the invention in the form of two half shells made of plastic, in which the functional elements are anchored by embedding, not only achieves a positionally accurate fixing of all parts, but also a simple and effective sealing of the housing, since the connecting elements of the relay are all already sealed off by the embedding and the edges of the two half-shells lie on one another only in the form of easily sealed plastic surfaces. Preferably, all parts are manufactured by injection molding or assembled. This achieves a high level of manufacturing accuracy, since the precise injection mold specifies the position tolerance of the individual parts. These individual parts are preferably made from flat sheet metal strips and overmolded in succession or simultaneously. This injection molding assembly is particularly well suited for a production by cycle Injection molding of parts connected on the belt, which means that large quantities can be manufactured at a reasonable price.

Ausgestaltungen und Weiterbildungen dieses allgemeinen Herstellungsverfahrens sind in den Unteransprüchen angegeben.Refinements and developments of this general manufacturing process are specified in the subclaims.

Die Erfindung wird nachfolgend an Ausführungεbeispielen anhand der Zeichnung näher erläutert. Es zeigt Figur l ein auf erfindungsgemäße Weise hergestelltes Relais in perspektivischer, teilweise aufgeschnittener Darstellung, Figur 2 ein Blechband mit teilweise freigeschnittenen Kern- Jochblechen, Figur 3 zwei Blechstreifen mit freigeschnittenen Kern- Jochblechen sowie Spulen-Anschlußstiften, auf denen durch Umspritzen Spulenkörper gebildet sind,The invention is explained in more detail below using exemplary embodiments with reference to the drawing. FIG. 1 shows a relay produced in accordance with the invention in a perspective, partially cut-open representation, FIG. 2 shows a sheet metal strip with partially cut-out core yoke sheets,

Figur 4 einen Blechstreifen mit Spulenkörpern, die teilweise bewickelt sind, Figur 5 ein Blechstreifen von Figur 4 mit bewickelten und zum Teil zur Bildung einer ersten Gehäuse-Halbschale mit Kunststoff umspritzten Spulenkörpern,4 shows a sheet metal strip with bobbins that are partially wound, FIG. 5 shows a sheet metal strip from FIG. 4 with wound bobbins that are partially molded with plastic to form a first housing half-shell,

Figur 6 eine abgetrennte erste Halbschale in einer gegenüber Figur 5 gedrehten Ansicht, Figur 7 eine fertige zweite Halbschale, Figur 8 einen Kontaktblechstreifen mit teilweise freigestanzten Festkontaktelementen in zwei verzahnten Reihen, Figur 9 eine abgetrennte, an einem Blechstreifen zusammenhängende Reihe von Festkontaktelementen, Figur 10 die Bildung von zweiten Halbschalen durch Umspritzen von Festkontaktelementen und Federträgern,6 shows a separated first half-shell in a view rotated in relation to FIG. 5, FIG. 7 shows a finished second half-shell, FIG. 8 shows a contact sheet strip with partially punched-out fixed contact elements in two toothed rows, FIG. 9 shows a separated row of fixed contact elements connected to a sheet metal strip, FIG Formation of second half shells by overmolding of fixed contact elements and spring supports,

Figur 11 eine Reihe von am Band freigestanzten Kontaktfedern, die mit einem Anker versehen werden,FIG. 11 shows a series of contact springs punched out on the band and provided with an anchor,

Figur 12 eine am Band zusammenhängende Reihe von zweiten Gehäuse-Halbschalen, die mit einer Feder-Ankereinheit versehen werden,FIG. 12 shows a row of second housing half-shells connected to the belt, which are provided with a spring anchor unit,

Figur 13 eine abgewandelte Form einer Feder-Ankereinheit, Figur 14 eine schematische Darstellung einer abgeänderten Ausführung einer Gehäuse-Halbschale im Schnitt in einer Spritzgußform,FIG. 13 shows a modified form of a spring anchor unit, FIG. 14 shows a schematic illustration of a modified version of a housing half-shell in section in an injection mold,

Figur 15 ein durch Aufeinanderlegen von zwei Gehäusehalbscha- len vervollständigtes Relais in einem Schnitt durch den Anker,FIG. 15 shows a relay completed by stacking two housing half-shells in a section through the armature,

Figur 16 eine abgeänderte Aufefüh'rungsform eines erfindungsgemäß hergestellten Relais in perspektivischer Darstellung.16 shows a modified Aufefüh 'approximate shape of a relay according to the invention in perspective view.

Figur 1 zeigt ein mit dem erfindungsgemäßen Verfahren hergestelltes Relais. Es besteht aus einer ersten Halbschale 1 und einer zweiten Halbschale 2, wobei die Halbschale 1 durch Umspritzen einer Spule 3, nämlich eines Spulenkörpers 31 mit einer Wicklung 34, und die zweite Halbschale durch Umspritzen eines Federträgers 21 sowie zweier Festkontaktelemente 22 und 23 gebildet ist. An dem Federträger 21 ist eine L-förmige Kontaktfeder 4 mit zwei Schenkeln 41 und 42 befestigt, die ihrerseits einen Anker 5 trägt. Der annähernd Z-förmig gebogene Anker 5 bildet mit seinen Enden jeweils Arbeitsluftspal- te mit zwei Polflächen 63 und 64 von zwei Polblechen 61 und 62, die Teil eines U-förmigen Kerns 6 sind, wobei das Polblech 62 aus der Kernebene nach oben abgekröpft ist.Figure 1 shows a relay manufactured with the inventive method. It consists of a first half-shell 1 and a second half-shell 2, the half-shell 1 being formed by overmolding a coil 3, namely a coil former 31 with a winding 34, and the second half-shell is formed by overmolding a spring support 21 and two fixed contact elements 22 and 23. An L-shaped contact spring 4 is fastened to the spring support 21 with two legs 41 and 42, which in turn carries an armature 5. The ends of the approximately Z-shaped armature 5 each form working air gaps with two pole faces 63 and 64 of two pole plates 61 and 62, which are part of a U-shaped core 6, the pole plate 62 being bent upward from the core plane .

In den folgenden Figuren sind die einzelnen Verfahrensschrit- te zur Herstellung des Relais von Figur 1 dargestellt. So zeigt Figur 2 die Herstellung von Kern-Jochblechen 6, welche aus einem Weichmagnet-Blechstreifen 60 im Fertigungstakt nacheinander freigeschnitten und gebogen werden. Figur 3 zeigt den Blechstreifen 6 mit den Kern-Jochblechen 6 in einem späteren Verfahrensstadium, jedoch immer noch zusammenhängend. Die Kern-Jochbleche 6 sind dabei bereits mit einem Thermoplast umspritzt, so daß jeweils ein Spulenkörper 31 gebildet ist, derart, daß die zwei Polbleche 61 und 62 frei vom Kunststoff sind. In den Spulenkörper 31 sind außerdem zwei Anschlußstifte 32 und 33 eingebettet, die ebenfalls an einem Blechstreifen 30 zusammenhängen. In dem Spulenkörper sind dabei außerdem Anschlußabschnitte 32b und 33b freigespart, an denen später die Wicklungsenden kontaktiert werden. Hierbei sei erwähnt, daß die Spulen-Anschlußstifte 32 und 33 einerseits und das Kern-Jochblech 6 andererseits auch aus einem gemeinsamen Weichmagnet -Blechstreifen gefertigt werden könn- ten, wobei die Auftrennung nach dem Umspritzen in entsprechender Weise vorgenommen werden könnte.The individual process steps for producing the relay of FIG. 1 are shown in the following figures. Thus, FIG. 2 shows the production of core yoke sheets 6, which are successively cut and bent from a soft magnetic sheet metal strip 60 in the production cycle. FIG. 3 shows the sheet metal strip 6 with the core yoke sheets 6 in a later process stage, but still in a continuous manner. The core yoke plates 6 are already overmolded with a thermoplastic, so that a coil former 31 is formed in such a way that the two pole plates 61 and 62 are free of plastic. In the bobbin 31 two pins 32 and 33 are also embedded, which are also related to a sheet metal strip 30. In this case, connection sections 32b and 33b are also saved in the coil former which are later contacted to the winding ends. It should be mentioned here that the coil connecting pins 32 and 33 on the one hand and the core yoke plate 6 on the other hand could also be produced from a common soft magnet sheet metal strip, the separation being able to be carried out in a corresponding manner after the extrusion coating.

Im weiteren Verlauf werden die durch Umspritzen gebildeten Spulenkörper-Einheiten einseitig, beispielsweise von dem Blechstreifen 60, abgetrennt, so daß sie nur noch an einer Seite, beispielsweise über den Blechstreifen 30 gemäß Figur 4, zusammenhängen. In diesem Zustand werden sie nach und nach mit der Wicklung 34 versehen, wobei die Wicklungsenden mit den Anschlußabschnitten 32b und 33b verbunden werden.In the further course, the coil former units formed by extrusion coating are separated on one side, for example from the sheet metal strip 60, so that they are only connected on one side, for example via the sheet metal strip 30 according to FIG. 4. In this state, they are gradually provided with the winding 34, the winding ends being connected to the terminal portions 32b and 33b.

Anschließend werden die Spuleneinheiten gemäß Figur 5 nach und nach im Fertigungstakt mit einem Thermoplast zur Bildung der Halbschalen 1 umspritzt, wie dies in Figur 5 gezeigt ist. Auch diese umspritzten Halbschalen 1 hängen noch über den Blechstreifen 30 zusammen. Die einzelnen Halbschalen werden dann von dem Blechstreifen abgetrennt, und die freigeschnit- tenen Spulen-Anschlußstifte 32 und 33 werden abgewinkelt, wie dies in Figur 6 in einer anderen Ansicht gezeigt ist. Die Spule einschließlich der Wicklung ist nunmehr vollständig von dem Kunststoff der ersten Halbschale 1 umhüllt, wobei lediglich die Polflächen der Polbleche 61 und 62 frei vom Kunststoff gehalten sind.Subsequently, the coil units according to FIG. 5 are gradually overmolded in the production cycle with a thermoplastic to form the half-shells 1, as shown in FIG. 5. These overmolded half-shells 1 are still connected via the metal strip 30. The individual half-shells are then separated from the sheet metal strip, and the cut-out coil connecting pins 32 and 33 are angled, as shown in another view in FIG. 6. The coil including the winding is now completely encased in the plastic of the first half-shell 1, only the pole faces of the pole sheets 61 and 62 being kept free from the plastic.

Die zweite Gehäuse-Halbschale 2 des Relais ist in Figur 7 in fertigem Zustand gezeigt. Die nachfolgenden Figuren zeigen einzelne Verfahrensabschnitte bei deren Herstellung. So ist in Figur 8 die Gewinnung von Festkontaktelementen 22 und 23 aus einem Blechband 20 gezeigt, welches mit einem Mittelstreifen 20C aus Kontaktmaterial, z.B. AgNi015 , AgSn02 oder dergleichen, plattiert ist. Die Kontaktmaterialschicht 20C ist als Inlay in das Bandmaterial 20 einplattiert, so daß sie keine Oberflächenerhöhung bildet, wodurch die Kontaktelemente in der Spritzgußform leicht abgedichtet werden können. Um möglichst Material zu sparen, werden gemäß Figur 8 die Festkontaktelemente 22 und 23 reißverschlußartig aus dem in- layplattierten Band 20 freigeschnitten, so daß der Edelme- tallanteil der plattierten Schicht 20C optimal genutzt wird. Es entstehen auf diese Weise zwei Kontaktbänder 20A und 20B, von denen das eine die Schließer-Festkontaktelemente 22 und das andere die Öffner-Festkontaktelemente 23 trägt. Figur 9 zeigt ein aus dem Verbund gelöstes Kontaktband 20A mit den teilweise freigeschnittenen Festkontaktelementen 22 sowie deren kontaktgebende Zone 22c.The second housing half-shell 2 of the relay is shown in FIG. 7 in the finished state. The following figures show individual process sections in their manufacture. 8 shows the extraction of fixed contact elements 22 and 23 from a sheet metal strip 20 which is plated with a central strip 20C made of contact material, for example AgNi015, AgSn0 2 or the like. The contact material layer 20C is plated as an inlay in the strip material 20 so that it does not form a surface increase, as a result of which the contact elements can be easily sealed in the injection mold. In order to save as much material as possible, the fixed contact elements 22 and 23 are cut out like a zipper from the inlaid band 20 so that the precious metal portion of the plated layer 20C is optimally used. In this way, two contact strips 20A and 20B are formed, one of which carries the normally open fixed contact elements 22 and the other the normally closed contact elements 23. FIG. 9 shows a contact strip 20A detached from the composite with the partially cut-off fixed contact elements 22 and their contact-making zone 22c.

Wie in Figur 10 gezeigt ist, werden die gegeneinander verdrehten Kontaktbänder 20A und 20C mit dem Kunststoffmaterial der zweiten Halbschale 2 umspritzt, wobei die plattierten Abschnitte 22c bzw. 23c einander zugewandt sind. Durch die asymmetrische Gestaltung der Festkontaktelemente 22 und 23 liegen die kontaktgebenden Abschnitte 22c und 23c übereinander, während ihre Anschlußenden 22a und 23a gegeneinander versetzt in der Wand der Halbschale 2 liegen. Beim Spritzen der Halbεchale 2 werden außerdem Federträger 21 mit eingespritzt, die ebenfalls an einem gemeinsamen Blechstreifen 10 zusammenhängen. Die Federträger 21 besitzen jeweils einen rechtwinkelig aufgebogenen Befestigungslappen 44 für die spä- ter noch beschriebene Kontaktfeder.As shown in FIG. 10, the mutually twisted contact strips 20A and 20C are extrusion-coated with the plastic material of the second half-shell 2, the plated sections 22c and 23c facing each other. Due to the asymmetrical design of the fixed contact elements 22 and 23, the contacting sections 22c and 23c lie one above the other, while their connecting ends 22a and 23a lie offset in the wall of the half-shell 2. When the half-shell 2 is sprayed, spring supports 21 are also injected, which are likewise connected to a common sheet-metal strip 10. The spring supports 21 each have a fastening tab 44 bent open at right angles for the contact spring, which will be described later.

Die zweite Halbschale bildet einen Hohlraum zur Aufnahme der beweglichen Anker-Federeinheit 4,5, die in Figur 11 gezeigt ist. Dabei zeigt Figur 11a ein Federband 40, aus dem nach und nach im Fertigungstakt die einzelnen Kontaktfedern 4 freigeschnitten, gebogen und mit den beweglichen Kontakten 43 versehen werden. Schließlich wird auf die Kontaktfeder der ebenfalls aus Blech geschnittene und vorgebogene Anker 5 befestigt, beispielsweise über einen Schweißpunkt 51. Diese An- ker-Kontaktfedereinheit wird dann in der zweiten Halbschale auf dem Federträger 21 angeordnet und beispielsweise über einen Schweißpunkt 46 befestigt (Figur 12) . Die Verbindung der Kontaktfeder 4 mit dem Anker 5 kann aber auch durch gemeinsames Umspritzen mit einer Isolierstoffum- hullung 52 erfolgen, wie dies in Figur 13 gezeigt ist. Auf diese Weise erreicht man auch eine elektrische Isolierung zwischen der Kontaktfeder 4 und dem Anker 5 bzw. dem Magnet- System.The second half-shell forms a cavity for receiving the movable armature-spring unit 4, 5, which is shown in FIG. 11. 11a shows a spring band 40, from which the individual contact springs 4 are gradually cut free, bent and provided with the movable contacts 43 in the production cycle. Finally, the armature 5, which is also cut from sheet metal and pre-bent, is fastened to the contact spring, for example via a welding point 51. This armature-contact spring unit is then arranged in the second half-shell on the spring support 21 and fastened, for example, via a welding point 46 (FIG. 12) . The connection of the contact spring 4 to the armature 5 can, however, also be carried out by injection molding around with an insulating material sheath 52, as shown in FIG. In this way, electrical insulation between the contact spring 4 and the armature 5 or the magnet system is also achieved.

In der Spritzgießforτn wird der Abstand der beiden planen Kontaktbänder 20A und 20B (Figur 10) mit der hohen Genauigkeit eines Schiebers im Werkzeug erreicht, so daß eine justier- freie Kontaktstellung im späteren Relais vorliegt. Es ist aber auch denkbar, mit einer Spritzgießform ohne zusätzlichen Schieber zu arbeiten. Zu diesem Zweck wird die Relaiskonstruktion in den beiden Halbschalen so angeordnet, daß die Kontaktflächen senkrecht in der zweiten Halbschale stehen. Eine entsprechende Anordnung zeigt schematisch die Figur 14, wo zwischen zwei Formhälften 110 und 120 eine untere Halb- schale 102 gebildet wird. In dieser unteren Halbschale sind zwei Festkontaktelemente 122 und 132 mit entsprechenden In- lay-Kontaktschichten so angeordnet, daß sie senkrecht zu der Formtrennebene 130 stehen. Ein Formvorsprung 111 gibt zwischen den beiden Festkontaktelementen 122 und 132 den genau vorgegebenen Kontaktabstand a und dichtet den Kontaktbereich gut ab, da der Druck der thermoplastischen Spritzgußmasse 103 für die Halbschale 102 die beiden Festkontaktelemente 122 und 132 gegen diesen abstandgebenden Vorsprung preßt.In the injection molding, the distance between the two flat contact strips 20A and 20B (FIG. 10) is achieved with the high accuracy of a slide in the tool, so that there is an adjustment-free contact position in the later relay. But it is also conceivable to work with an injection mold without an additional slide. For this purpose, the relay construction is arranged in the two half shells so that the contact surfaces are perpendicular in the second half shell. A corresponding arrangement is shown schematically in FIG. 14, where a lower half-shell 102 is formed between two mold halves 110 and 120. Two fixed contact elements 122 and 132 with corresponding inlay contact layers are arranged in this lower half-shell in such a way that they are perpendicular to the mold parting plane 130. A molded projection 111 gives the precisely specified contact distance a between the two fixed contact elements 122 and 132 and seals the contact area well, since the pressure of the thermoplastic injection molding compound 103 for the half-shell 102 presses the two fixed contact elements 122 and 132 against this spacing projection.

Beim Zusammenfügen der beiden Halbschalen 1 und 2 gemäß Figur 15 greift eine Umfangswand 12 der Halbschale 1 schachteltör- mig über die Halbschale 2, die zu diesem Zweck einen innen umlaufenden Steg 24 aufweist. Um eine genaue Justierung der Abstände zwischen Magnetsystem und Kontaktsystem zu erreichen, besitzt eine der Halbschalen außerdem eine umlaufende Rippe 25, die während des Fügens, beispielsweise mittels Ul- traschall, deformiert wird und eine dichte Verbindung zwischen beiden Halbschalen herstellt . Die Abdichtung ist auf diese Weise sehr einfach, da alle Anschlüsse bereits vorher in der jeweiligen Halbschale dicht umspritzt sind und die Fügeebene durch thermoplastischen Kunststoff der beiden Halbschalen gebildet wird. Beim Fügen der beiden Halbschalen wird dabei die DurchzugsSpannung des Ankers gemessen, wobei der Anker an die Polflächen 63 und 64 der Polbleche 61 und 62 angezogen wird. Sobald ein vorgegebener Kennwert der Durchzugs - Spannung als Maß für die Abbrandgröße bzw. den Überhub des Kontaktes erreicht ist, wird der Fügevorgang beendet. Das Relais ist damit justiert und zugleich abgedichtet. Durch die Fügenaht in einer Ebene ohne Höhendifferenz ist eine sichere Abdichtung der beiden Halbschalen aber auch mit anderen Technologien erreichbar, beispielsweise durch Kleben, Klemmen, Vergießen oder durch eine Elastomerdichtung, die im Zweikomponenten-Spritzgießverfahren an einer Halbschale ange- spritzt sein kann.When joining the two half-shells 1 and 2 according to FIG. 15, a peripheral wall 12 of the half-shell 1 engages in a box-like manner over the half-shell 2, which for this purpose has a web 24 which runs around the inside. In order to achieve a precise adjustment of the distances between the magnet system and the contact system, one of the half-shells also has a circumferential rib 25 which is deformed during the joining, for example by means of ultrasound, and creates a tight connection between the two half-shells. Sealing is very easy in this way, as all connections have been made beforehand are overmolded in the respective half-shell and the joining plane is formed by thermoplastic plastic of the two half-shells. When the two half-shells are joined, the pull-through voltage of the armature is measured, the armature being attracted to the pole faces 63 and 64 of the pole plates 61 and 62. As soon as a predetermined characteristic value of the pull-through voltage as a measure of the erosion size or the overstroke of the contact is reached, the joining process is ended. The relay is adjusted and sealed at the same time. The joint seam on one level without a height difference ensures that the two half-shells can be securely sealed, but also with other technologies, for example by gluing, clamping, casting or using an elastomer seal that can be molded onto a half-shell using the two-component injection molding process.

In den Figuren 1 und 15 sind die Anschlußstifte des Relais an zwei gegenüberliegenden Seiten des Gehäuses angeordnet und rechtwinkelig nach unten abgebogen. Sie können so als Lötan- schlußstifte Verwendung finden oder auch durch eine weitere Abwinkelung in die Horizontale als SMT-Anschlußelemente dienen. Bei einer entsprechenden Abwandlung der Konstruktion ist aber auch eine andere Anschlußgeometrie möglich, so daß im Bedarfsfall alle Anschlußelemente an einer Gehäuseseite aus- treten. Diese können natürlich sowohl als Lötstifte als auch als Flachstecker ausgebildet sein.In Figures 1 and 15, the pins of the relay are arranged on two opposite sides of the housing and bent downwards at right angles. In this way, they can be used as solder pins or can also be used as SMT connectors by further bending them horizontally. With a corresponding modification of the construction, however, a different connection geometry is also possible, so that, if necessary, all connection elements emerge on one housing side. These can of course be designed both as solder pins and as flat tabs.

In Figur 16 ist noch eine Variante des Relais gezeigt, wobei alle Anschlüsse auf nur einer Seite aus dem Gehäuse austreten und die Trennebene sich senkrecht zu der Anschlußseite des Relais erstreckt. Auch in diesem Fall enthält eine erste Halbschale 201 das Magnetsystem mit Spulenanschlußstiften 232 und 233, während die zweite Halbschale 202 das Kontaktsystem mit Kontaktanschlußstiften 221, 222 und 223 trägt. Auch in diesem Fall werden die beiden Halbschalen entlang einer Trennebene 203 zusammengefügt, wobei auch hier bei entsprechender Konstruktion durch das Zusammenfügen eine Justierung erfolgen kann . A variant of the relay is shown in FIG. 16, with all connections emerging from the housing on only one side and the parting plane extending perpendicularly to the connection side of the relay. In this case too, a first half-shell 201 contains the magnet system with coil pins 232 and 233, while the second half-shell 202 carries the contact system with contact pins 221, 222 and 223. In this case too, the two half-shells are joined together along a parting plane 203, with a corresponding one also here Construction can be done by assembling an adjustment.

Claims

Patentansprüche claims 1. Verfahren zur Herstellung eines elektromagnetischen Relais mit - einer von einem Kern (3) durchsetzten Spule (31,34) mit einer Wicklung (34) und mit Anschlußstiften (32,33), wobei der Kern (3) an beiden Enden außerhalb der Spule Polbleche (61,62) bildet,1. A method for producing an electromagnetic relay with - a coil (31, 34) with a core (3) interspersed with a winding (34) and with connecting pins (32, 33), the core (3) at both ends outside the Forms coil plate (61,62), - einem die Polbleche (61,62) unter Bildung von Arbeits- luftspalten überbrückenden Anker (5) und- An armature (5) bridging the pole plates (61, 62) to form working air gaps and - einer Kontaktanordnung mit einer von dem Anker betätigten Kontaktfeder (4) sowie mindestens einem mit der Kontaktfeder zusammenwirkenden Festkontaktelement, g e k e n n z e i c h n e t d u r c h folgende Schritte: - die mit dem Kern (3) versehene Spule (31,34) wird mit ihren Anschlußstiften (32,33) unter Bildung einer ersten Gehäuse- Halbschale (1) in Kunststoff eingebettet,- A contact arrangement with a contact spring (4) actuated by the armature and at least one fixed contact element interacting with the contact spring, characterized by the following steps: - The coil (31, 34) provided with the core (3) is connected with its connecting pins (32, 33) embedded in plastic to form a first housing half-shell (1), - ein Federträger (21) für die Kontaktfeder (4) und mindestens ein Festkontaktelement (22,23) werden unter Bildung einer zweiten Gehäuse-Halbschale in Kunststoff eingebettet,a spring support (21) for the contact spring (4) and at least one fixed contact element (22, 23) are embedded in plastic to form a second housing half-shell, - der Anker (5) wird in eine der beiden Halbschalen (2) eingesetzt und- The anchor (5) is inserted into one of the two half-shells (2) and - die beiden Halbschalen (1,2) werden mit ihren Rändern- The two half-shells (1,2) with their edges (12,24) aufeinanderliegend dicht verbunden.(12,24) tightly connected to each other. 2. Verfahren nach Anspruch 1, d a d u r c h g e k e n n z e i c h n e t , daß 'zunächst ein aus Blech (60) freigeschnittener Kern (6) sowie ebenfalls aus einem Blech (30) freigeschnittene Spulen-Anschlußstifte (32,33) zur Bildung eines Spulenkörpers (31) mit Kunststoff umspritzt werden, wobei an den Enden des Kerns (6) ausgebildete Polbleche (61,62) freibleiben, und daß dann der Spulenkörper (31) bewickelt wird. 2. The method according to claim 1, characterized in that 'first a core (6) cut out of sheet metal (60) and also from a sheet metal (30) cut out coil connecting pins (32, 33) are molded to form a coil former (31) with plastic are formed, at the ends of the core (6) formed pole plates (61, 62) remain free, and that the coil former (31) is then wound. 3. Verfahren nach Anspruch 2, d a d u r c h g e k e n n z e i c h n e t , daß jeweils die Kerne (6) und Spulenanschlußstifte (32,33) für mehrere Relais jeweils an ihrem Blechband (60; 30) zusammenhangend im Fertigungstakt umspritzt werden3. The method according to claim 2, d a d u r c h g e k e n n z e i c h n e t that the cores (6) and coil connecting pins (32,33) for a plurality of relays are extrusion-coated on their metal strip (60; 30) connected in the manufacturing cycle 4 Verfahren nach Anspruch 3, d a d u r c h g e k e n n z e i c h n e t , daß mehrere Spulenkorper (31) an dem gemeinsamen Blechband (30) hängend bewickelt werden.4 The method of claim 3, d a d u r c h g e k e n n z e i c h n e t that several coil formers (31) are wound hanging on the common sheet metal strip (30). 5 Verfahren nach Anspruch 4, d a d u r c h g e k e n n z e i c h n e t , daß mehrere Spulen (31,34) an dem gemeinsamen Blechband (30) hangend im Fertigungstakt zur Bildung der ersten Halbschale (1) um- spπtzt werden.5 The method according to claim 4, so that several coils (31, 34) on the common sheet metal strip (30) are revolved in the production cycle to form the first half-shell (1). 6 Verfahren nach einem der Ansprüche 2 bis 5, d a d u r c h g e k e n n z e i c h n e t , daß die Kerne (6) und die Spulenanschlußstifte (32,33) aus dem selben6. The method according to any one of claims 2 to 5, that the cores (6) and the coil connection pins (32, 33) are made of the same thing Blechstreifen (60) geschnitten, gemeinsam umspritzt und nachträglich getrennt werden.Cut metal strips (60), overmolded together and subsequently separated. 7 Verfahren nach einem der Ansprüche 1 bis 6, d a d u r c h g e k e n n z e i c h n e t , daß zur Herstellung der zweiten Halbschale (2) jeweils ein am Band (10) hangender Federträger (21) und mindestens ein ebenfalls an einem Band (20A, 20B) hängend geführtes Festkontaktelement (22,23) mit Kunststoff umspritzt werden.7. The method according to any one of claims 1 to 6, characterized in that for producing the second half-shell (2) each have a spring support (21) hanging on the belt (10) and at least one fixed contact element (22) also hanging on a belt (20A, 20B) , 23) are encapsulated with plastic. 8. Verfahren nach Anspruch 7, d a du r c h g e k e n n z e i c h n e t , daß zur Herstellung der Festkontaktelemente (22,23) jeweils ein Blech- streifen (20) entlang einem Mittelabschnitt (20C) mit Kon- taktwerkstoff beschichtet wird und daß dann die einzelnen8. The method according to claim 7, so that a sheet-metal strip (20) is coated along a central section (20C) with contact material in order to produce the fixed contact elements (22, 23) and then the individual Festkontaktelemente (22,23) abwechselnd entgegengesetzt gerichtet freigeschnitten werden, derart, daß ihre kontaktge- benden Enden (22c, 23c) reißverschlußartig aneinanderstoßend einen Teil des Mittelabschnittes (20C) umfassen, während ihre Anschlußenden (22a, 23a) abwechselnd mit einem von zwei verbleibenden Festkontaktstreifen (22,23) verbunden bleiben.Fixed contact elements (22, 23) are cut alternately in opposite directions so that their contact The ends (22c, 23c), which abut one another like a zipper, encompass part of the central section (20C), while their connection ends (22a, 23a) alternately remain connected to one of two remaining fixed contact strips (22, 23). 9. Verfahren nach Anspruch 8, d a d u r c h g e k e n n z e i c h n e t , daß die Festkontaktelemente (22,23) jeweils in der Blechebene mit ihrem kontaktgebenden Bereich (22b, 23b) asymmetrisch gegenüber der Achse ihrer Anschlußenden (22a, 23a) angeformt sind und daß bei der Herstellung der zweiten Halbschale (2) mit zwei Festkontaktelementen (22,23) zwei Festkontaktstreifen (20A,20B) im Winkel gegeneinander so übereinander angeordnet werden, daß die kontaktgebenden Abschnitte (22b, 23b) mit ihren be- schichteten Seiten einander zugewandt sind und die Anschlußenden (22a, 23a) gegeneinander parallel versetzt sind.9. The method according to claim 8, characterized in that the fixed contact elements (22,23) are each formed in the sheet metal plane with their contacting region (22b, 23b) asymmetrically with respect to the axis of their connecting ends (22a, 23a) and that in the manufacture of the second Half-shell (2) with two fixed contact elements (22, 23), two fixed contact strips (20A, 20B) at an angle to one another so that the contacting sections (22b, 23b) face each other with their coated sides and the connection ends (22a , 23a) are mutually offset in parallel. 10 Verfahren nach einem der Ansprüche 1 bis 9, d a d u r c h g e k e n n z e i c h n e t , daß beim Spritzgießen der zweiten Halbschale (2) der Abstand (a) zwischen zwei Festkontaktelementen (122,132) durch ein Element (111) der Spritzgußform (110,120) exakt festgelegt w rd10 Method according to one of claims 1 to 9, d a d u r c h g e k e n n z e i c h n e t that during the injection molding of the second half-shell (2) the distance (a) between two fixed contact elements (122,132) by an element (111) of the injection mold (110,120) is exactly defined 11. Verfahren nach einem der Ansprüche 1 bis 10, d a d u r c h g e k e n n z e i c h n e t , daß beim Zusammenfügen beider Halbschalen (1,2) der Ankerhub und/oder der Uberhub gemessen und bei Erreichen einer vorgegebenen Größe der Fügevorgang beendet wird.11. The method according to any one of claims 1 to 10, so that the armature stroke and / or the excess stroke are measured when the two half-shells (1, 2) are joined and the joining process is ended when a predetermined size is reached. 12. Verfahren nach Anspruch 11, d a d u r c h g e k e n n z e i c h n e t , daß der Rand bzw. eine am Rand angeformte Rippe (25) zumindest einer der beiden Halbschalen (1) beim Fügen bis zum Erreichen des vorgegebenen Ankerhubes bzw. Überhubes deformiert wird. 12. The method according to claim 11, characterized in that the edge or a rib (25) formed on the edge of at least one of the two half-shells (1) is deformed during joining until the predetermined anchor stroke or overstroke is reached. 13. Verfahren nach Anspruch 12, d a d u r c h g e k e n n z e i c h n e t , daß der Rand bzw. die Rippe (25) der einen Halbschale beim Fügen durch Ul traschall verformt wird. 13. The method of claim 12, d a d u r c h g e k e n n z e i c h n e t that the edge or the rib (25) of a half-shell is deformed by ultrasound when joining.
EP97931620A 1996-07-10 1997-06-17 Process for manufacturing an electromagnetic relay Expired - Lifetime EP0910861B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19627845 1996-07-10
DE19627845A DE19627845C1 (en) 1996-07-10 1996-07-10 Electromagnetic relay assembled at lowest cost and highest precision
PCT/DE1997/001229 WO1998001878A1 (en) 1996-07-10 1997-06-17 Process for manufacturing an electromagnetic relay

Publications (2)

Publication Number Publication Date
EP0910861A1 true EP0910861A1 (en) 1999-04-28
EP0910861B1 EP0910861B1 (en) 2000-02-09

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EP97931620A Expired - Lifetime EP0910861B1 (en) 1996-07-10 1997-06-17 Process for manufacturing an electromagnetic relay

Country Status (7)

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US (1) US6272734B1 (en)
EP (1) EP0910861B1 (en)
JP (1) JP2000514234A (en)
CN (1) CN1075237C (en)
AT (1) ATE189746T1 (en)
DE (2) DE19627845C1 (en)
WO (1) WO1998001878A1 (en)

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Also Published As

Publication number Publication date
ATE189746T1 (en) 2000-02-15
CN1225190A (en) 1999-08-04
WO1998001878A1 (en) 1998-01-15
DE19627845C1 (en) 1997-09-18
US6272734B1 (en) 2001-08-14
CN1075237C (en) 2001-11-21
EP0910861B1 (en) 2000-02-09
DE59701119D1 (en) 2000-03-16
JP2000514234A (en) 2000-10-24

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