EP0444223A1 - Contact spring set - Google Patents
Contact spring set Download PDFInfo
- Publication number
- EP0444223A1 EP0444223A1 EP90103765A EP90103765A EP0444223A1 EP 0444223 A1 EP0444223 A1 EP 0444223A1 EP 90103765 A EP90103765 A EP 90103765A EP 90103765 A EP90103765 A EP 90103765A EP 0444223 A1 EP0444223 A1 EP 0444223A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- contact
- spring
- springs
- strip
- contact spring
- 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.)
- Withdrawn
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Classifications
-
- 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
Definitions
- the invention relates to a method for producing a contact spring set consisting of a fixed contact spring and a contact spring movable thereon (as well as moving away from it) and a contact-independent return spring movable perpendicular to the direction of movement of the movable contact spring, all springs being mounted in a plastic base.
- Contact spring sets of this type are required for a wide variety of requirements. They can be set up as NO contacts or as NC contacts and can be equipped with different contacts.
- the return spring serves to reset the actuating device which, when actuated, pushes the movable contact spring away from the fixed contact spring or moves towards it.
- these contact spring sets are still manufactured in such a way that the contact springs are punched out of a corresponding spring metal strip, optionally equipped with contacts and then assembled or packaged with the interposition of insulating pieces.
- it has also become known to overmold the contact springs with plastic on the stamping strip.
- the complex assembly of these molded contact springs still has to be carried out.
- the invention therefore has the task of a manufacturing method to specify for such contact spring sets, which enables their manufacture in an extremely economical manner, which avoids additional or subsequent adjustment work and which permits delivery in assembly rollers.
- This is achieved in a manner according to the invention in that the springs are punched out side by side from a stamping strip, via webs with one another and with the stamping strip, that a terminal tab of a contact spring is folded over onto the further contact spring and the return spring is bent over so that the stamping strip prepared in this way overmolded on the spring base and then at least the web between the contact springs is punched out and then the spring set thus produced is discharged remaining at least on one side on the punched strip.
- the spring contacts are individually, if necessary overmolded, punched out of a band, then manually put together, but both the contact springs and the return spring are punched out side by side from one another from a punched strip, bent and then overmolded, so that at the end of this Manufacturing process already the finished contact spring set is within the punched strip.
- stamping or embossing can also be carried out during the machining process, as can the galvanizing of the contact surfaces or the use of contact rivets.
- the contact spring sets can also be mechanically adjusted directly on the conveyor and their electrical values can also be checked. In the case of galvanic coating or when inserting contact rivets, it is advantageous to notice that this machining process only has to be carried out from one side, since the counter-contact is turned through 180 degrees by folding over the tab.
- a fixed contact spring (2) Attached in a plastic base (1) are a fixed contact spring (2), a movable contact spring (3) and a return spring (4).
- A is used for the electrical connection to the fixed contact spring (2)
- a centrally attached plug (6) is used for mechanical fastening of the spring contact, but it can of course also be used for earthing, etc.
- the individual springs (2, 3, 4) are punched out of a punched strip (9), so that continuous punched strip strips (10, 11) remain on both sides.
- the two contact springs (2, 3) are connected to the return spring via a web (12) and these, in turn, via a further web (13) to the return spring and all the springs to the remaining punched strip tapes (10, 11).
- the tab (16) is moved to the movable one Contact spring (3) folded over and at the same time the return spring (4) bent by 90 degrees (Fig. 3 right side).
- the punched strip runs into a plastic injection mold where the base surrounding the spring is injection molded, as can be seen from FIGS. 1 and 2.
- an opening (17) is punched out, the web (12) being punched out between the two contact springs.
- a recess (19) in the injection mold allows access to the contact springs (2, 3), so that there, as well as on the contact lugs (5, 7) during the machining process, a galvanic contact with the contact springs (2, 3) is made and the electrical function of the contact can be checked .
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Manufacture Of Switches (AREA)
Abstract
Description
Die Erfindung betrifft ein verfahren zum Herstellen eines Kontaktfedersatzes bestehend aus einer feststehenden und einer hierauf zu (hiervon weg) bewegbaren Kontaktfeder sowie einer senkrecht zur Bewegungsrichtung der bewegbaren Kontaktfeder beweglichen kontaktunabhängigen Rückholfeder, wobei sämtliche Federn in einem Kunststoffsockel angebracht sind.The invention relates to a method for producing a contact spring set consisting of a fixed contact spring and a contact spring movable thereon (as well as moving away from it) and a contact-independent return spring movable perpendicular to the direction of movement of the movable contact spring, all springs being mounted in a plastic base.
Kontaktfedersätze dieser Art werden für die unterschiedlichsten Anforderungen benötigt. Sie können als Schließer oder als Öffner aufgebaut und mit unterschiedlichen Kontakten bestückt sein. Die Rückholfeder dient hierbei dem Rückstellen der Betätigungsvorrichtung, die bei Betätigung die bewegliche Kontaktfeder von der feststehenden Kontaktfeder wegdrückt beziehungsweise auf sie zu bewegt.Contact spring sets of this type are required for a wide variety of requirements. They can be set up as NO contacts or as NC contacts and can be equipped with different contacts. The return spring serves to reset the actuating device which, when actuated, pushes the movable contact spring away from the fixed contact spring or moves towards it.
In großen Stückzahlen werden diese Kontaktfedersätze noch so gefertigt, daß die Kontaktfedern aus einem entsprechenden Federmetallstreifen herausgestanzt, gegebenenfalls mit Kontakten bestückt und sodann unter Zwischenfügen von Isolierstücken zusammengefügt beziehungsweise pakettiert werden. Zur Erleichterung der Montage ist es auch bereits bekannt geworden, die Kontaktfedern bereits am Stanzstreifen mit Kunststoff zu umspritzen. Die aufwendige Montage dieser umspritzten Kontaktfedern muß jedoch immer noch durchgeführt werden.In large quantities, these contact spring sets are still manufactured in such a way that the contact springs are punched out of a corresponding spring metal strip, optionally equipped with contacts and then assembled or packaged with the interposition of insulating pieces. To facilitate assembly, it has also become known to overmold the contact springs with plastic on the stamping strip. However, the complex assembly of these molded contact springs still has to be carried out.
Elektronische Bauelemente werden zur maschinellen Bestückung auf ein flexibles Band aufgesetzt geliefert. Wünschenswert wäre es, wenn die Kontaktfedersätze ebenfalls auf ein Band aufgewickelt angeliefert werden könnten, um sie ebenfalls auf einfachste Art und Weise maschinell weiter verarbeiten zu können.Electronic components are supplied placed on a flexible belt for automatic assembly. It would be desirable if the contact spring sets could also be delivered wound on a tape so that they could also be processed by machine in the simplest possible way.
Damit stellt sich die Erfindung die Aufgabe, ein Herstellungsverfahren für derartige Kontaktfedersätze anzugeben, das deren Fertigung auf äußerst wirtschaftliche Art und Weise ermöglicht, das zusätzliche beziehungsweise nachträgliche Justierarbeiten vermeidet und das die Auslieferung in Montagerollen zulässt. Erreicht wird dies in erfindungsgemäßer Weise dadurch, daß die Federn nebeneinander aus einem Stanzstreifen, über Stege miteinander und mit dem Stanzstreifen zusammenhängend herausgestanzt werden, daß ein endständiger Lappen einer Kontaktfeder auf die weitere Kontaktfeder zu umgefaltet und die Rückholfeder umgebogen wird, daß der so vorbereitete Stanzstreifen am Federsockel umspritzt und sodann zumindest der Steg zwischen den Kontaktfedern weggestanzt wird und anschließend der so gefertigte Federsatz zumindest einseitig am Stanzstreifen verbleibend ausgetragen wird.The invention therefore has the task of a manufacturing method to specify for such contact spring sets, which enables their manufacture in an extremely economical manner, which avoids additional or subsequent adjustment work and which permits delivery in assembly rollers. This is achieved in a manner according to the invention in that the springs are punched out side by side from a stamping strip, via webs with one another and with the stamping strip, that a terminal tab of a contact spring is folded over onto the further contact spring and the return spring is bent over so that the stamping strip prepared in this way overmolded on the spring base and then at least the web between the contact springs is punched out and then the spring set thus produced is discharged remaining at least on one side on the punched strip.
Nicht mehr also wie bisher werden die Federkontakte einzeln, gegebenfalls umspritzt, aus einem Band herausgestanzt, dann manuell zusammengefügt, sondern sowohl die Kontaktfedern wie auch die Rückholfeder werden nebeneinander über Stege zusammenhängend aus einem Stanzstreifen herausgestanzt, gebogen und sodann umspritzt, so daß am Ende dieses Fertigungsvorganges bereits der fertige Kontaktfedersatz sich innerhalb des Stanzstreifens befindet. Hierbei können selbstverständlich auch noch Aus- oder Umprägungen während des Bearbeitungsvorganges vorgenommen werden, ebenso wie auch das Galvanisieren der Kontaktflächen oder das Einsetzen von Kontaktnieten. Weiter können auch direkt am Band maschinell die Kontaktfedersätze justiert und es können auch deren elektrische Werte überprüft werden. Bei der galvanischen Beschichtung beziehungsweise beim Einsetzen von Kontaktnieten macht sich vorteilhaft bemerkbar, daß dieser Bearbeitungsvorgang nur von einer Seite vorgenommen werden muß, da der Gegenkontakt durch das Umfalten des Lappens um 180 Grad gewendet wird.No longer, as before, the spring contacts are individually, if necessary overmolded, punched out of a band, then manually put together, but both the contact springs and the return spring are punched out side by side from one another from a punched strip, bent and then overmolded, so that at the end of this Manufacturing process already the finished contact spring set is within the punched strip. Of course, stamping or embossing can also be carried out during the machining process, as can the galvanizing of the contact surfaces or the use of contact rivets. The contact spring sets can also be mechanically adjusted directly on the conveyor and their electrical values can also be checked. In the case of galvanic coating or when inserting contact rivets, it is advantageous to notice that this machining process only has to be carried out from one side, since the counter-contact is turned through 180 degrees by folding over the tab.
Insgesamt sind damit all die oben gestellten Aufgaben gelöst beziehungsweise ist ein Fertigungsverfahren für einen Kontaktfedersatz angegeben, das es erlaubt auf sehr wirtschaftliche Art und Weise und auch hinsichtlich des Kontaktdruckes und des Kontaktabstandes justierte, in ihrer Funktion überprüfte, an einem Band befindliche Kontaktfedersätze herzustellen.All in all, all of the above tasks are thus solved or a manufacturing method for a contact spring set is specified, which allows the production of contact spring sets which are adjusted on a band and adjusted in terms of their function in a very economical manner and also with regard to the contact pressure and the contact spacing.
Auf der Zeichnung ist das Ausführungsbeispiel eines derartigen Kontaktfedersatzes schematisch dargestellt und zwar zeigen
- Fig. 1 eine Seitenansicht,
- Fig. 2 eine Frontansicht des Kontaktfedersatzes und
- Fig. 3 den hierzu führenden Stanzstreifen.
- 1 is a side view,
- Fig. 2 is a front view of the contact spring set and
- 3 shows the punching strip leading to this.
Angebracht in einem Kunststoffsockel (1) sind eine feste Kontaktfeder (2), eine bewegliche Kontaktfeder (3) sowie eine Rückholfeder (4). Zur elektrischen Verbindung mit der festen Kontaktfeder (2) dient eine Kontaktfahne (7), eine Kontaktfahne (5) führt zu der beweglichen Kontaktfeder (3). Ein zentrisch angebrachter Stecker (6) dient zur mechanischen Befestigung des Federkontaktes, er kann selbstverständlich aber auch beispielsweise zur Erdung etc. herangezogen werden.Attached in a plastic base (1) are a fixed contact spring (2), a movable contact spring (3) and a return spring (4). A is used for the electrical connection to the fixed contact spring (2) Contact tab (7), a contact tab (5) leads to the movable contact spring (3). A centrally attached plug (6) is used for mechanical fastening of the spring contact, but it can of course also be used for earthing, etc.
Zur Herstellung des Kontaktfedersatzes werden die einzelnen Federn (2, 3, 4) aus einem Stanzstreifen (9) herausgestanzt, so daß noch beidseitig durchgehende Stanzstreifenbänder (10, 11) verbleiben. Hierbei hängen die beiden Kontaktfedern (2, 3) über einen Steg (12) und diese wiederum über einen weiteren Steg (13) mit der Rückholfeder und sämtliche Federn mit den verbleibenden Stanzstreifenbändern (10, 11) zusammen. Nachdem auch noch Ausprägungen etc., beispielsweise das hakenförmige Ende (14) der Kontaktfeder (4) und auch eine Kontaktausdrückung (15) an einem Lappen (16) der festen Kontaktfeder (2) vorgenommen wurden, wird der Lappen (16) auf die bewegliche Kontaktfeder (3) zu umgefaltet und gleichzeitig auch die Rückholfeder (4) um 90 Grad abgebogen (Fig. 3 rechte Seite). Nach Vornahme dieser Manipulationen läuft der Stanzstreifen in ein Kunststoff-Spritzwerkzeug ein wo der die Feder umgebende Sockel, wie aus den Fig. 1 und 2 ersichtlich ist, angespritzt wird. Nach dem Umspritzen wird eine Öffnung (17) ausgestanzt, wobei der Steg (12) zwischen den beiden Kontaktfedern weggestanzt wird. Eine Aussparung (19) in dem Spritzwerkzeug läßt den Zugang zu der Kontaktfedern (2, 3) zu, sodaß dort, wie auch an den Kontaktfahnen (5, 7) während des Bearbeitungsvorganges ein galvanischer Kontakt mit den Kontaktfedern (2, 3) hergestellt und die elektrische Funktion des Kontaktes überprüft werden kann.To produce the contact spring set, the individual springs (2, 3, 4) are punched out of a punched strip (9), so that continuous punched strip strips (10, 11) remain on both sides. The two contact springs (2, 3) are connected to the return spring via a web (12) and these, in turn, via a further web (13) to the return spring and all the springs to the remaining punched strip tapes (10, 11). After also expressions etc., for example the hook-shaped end (14) of the contact spring (4) and also a contact expression (15) on a tab (16) of the fixed contact spring (2), the tab (16) is moved to the movable one Contact spring (3) folded over and at the same time the return spring (4) bent by 90 degrees (Fig. 3 right side). After these manipulations have been carried out, the punched strip runs into a plastic injection mold where the base surrounding the spring is injection molded, as can be seen from FIGS. 1 and 2. After the extrusion coating, an opening (17) is punched out, the web (12) being punched out between the two contact springs. A recess (19) in the injection mold allows access to the contact springs (2, 3), so that there, as well as on the contact lugs (5, 7) during the machining process, a galvanic contact with the contact springs (2, 3) is made and the electrical function of the contact can be checked .
Claims (5)
dadurch gekennzeichnet,
daß die Federn (2,3,4) nebeneinander aus einem Stanzstreifen (9) über Stege (12, 13) miteinander und mit dem Stanzstreifen (9, 10, 11) zusammenhängend herausgestanzt werden, daß ein endständiger Lappen (16) einer Kontaktfeder (2) auf die weitere Kontaktfeder (3) zu umgefaltet und die Rückholfeder (4) umgebogen wird, daß der so vorbereitete Stanzstreifen (9) am Federsockel umspritzt und sodann zumindest der Steg (12) zwischen den Kontaktfedern (2, 3) weggestanzt wird und anschließend der so gefertigte Federsatz zumindest einseitig am Stanzstreifen (9, 10, 11) verbleibend ausgetragen wird.Method for producing a set of contact springs, consisting of a fixed contact spring and a contact spring movable thereon, as well as a contact-independent return spring movable perpendicular to the direction of movement of the movable contact spring, all springs being mounted in a plastic base
characterized,
that the springs (2, 3, 4) are punched out side by side from a stamping strip (9) via webs (12, 13) together and with the stamping strip (9, 10, 11), that a terminal tab (16) of a contact spring ( 2) folded over onto the further contact spring (3) and the return spring (4) bent so that the punched strip (9) thus prepared is overmolded on the spring base and then at least the web (12) between the contact springs (2, 3) is punched out and the spring set thus produced is then discharged at least on one side on the punched strip (9, 10, 11).
dadurch gekennzeichnet,
daß der Stanzstreifen (9) vor der Biegestation auf einer Seite selektiv galvanisch beschichtet wird.Method according to claim 1,
characterized,
that the punched strip (9) is selectively galvanically coated on one side before the bending station.
dadurch gekennzeichnet,
daß in den Stanzstreifen (9) vor der Biegestation an den Kontaktstellen Kontaktnieten eingefügt werden.Method according to claim 1,
characterized,
that contact rivets are inserted into the stamping strips (9) in front of the bending station at the contact points.
dadurch gekennzeichnet,
daß die Kontaktfedern (2,3) mit Kontaktfahnen (5,7) versehen sindMethod according to claim 1,
characterized,
that the contact springs (2,3) are provided with contact tabs (5,7)
dadurch gekennzeichnet,
daß im Sockel (1) eine zu den Kontaktfedern (2, 3) führende Aussparung (9, 10) vorgesehen ist.Method according to claim 1,
characterized,
that a recess (9, 10) leading to the contact springs (2, 3) is provided in the base (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP90103765A EP0444223A1 (en) | 1990-02-27 | 1990-02-27 | Contact spring set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP90103765A EP0444223A1 (en) | 1990-02-27 | 1990-02-27 | Contact spring set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP0444223A1 true EP0444223A1 (en) | 1991-09-04 |
Family
ID=8203698
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP90103765A Withdrawn EP0444223A1 (en) | 1990-02-27 | 1990-02-27 | Contact spring set |
Country Status (1)
| Country | Link |
|---|---|
| EP (1) | EP0444223A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19501855A1 (en) * | 1995-01-23 | 1996-07-25 | Kostal Leopold Gmbh & Co Kg | Multiple switch arrangement mfr. using single sheet metal cut=out bent into shape |
| US6141872A (en) * | 1998-06-15 | 2000-11-07 | Sumitomo Wiring Systems, Ltd. | Method of manufacturing products having a deformable connection for facilitating manufacture |
| DE10015993A1 (en) * | 2000-03-31 | 2001-10-11 | Heraeus Gmbh W C | Hybrid plug connector casing and method for producing it includes a basic plastic body and a set of conductors incapable of being removed. |
| DE102011115786A1 (en) * | 2011-10-06 | 2013-04-11 | Rolf Prettl | Method of manufacturing belt buckle-switch for belt buckle, involves providing electrically conductive lead frame element which comprises molding region and contact region |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0200175A2 (en) * | 1985-05-03 | 1986-11-05 | SWF Auto-Electric GmbH | Electric switch, in particular a steering wheel switch for a motor vehicle |
| US4644110A (en) * | 1984-08-01 | 1987-02-17 | Alpine Electronics Inc. | Dip switch having single terminal-contact support wafer |
| DE3829035A1 (en) * | 1987-10-14 | 1989-04-27 | Fuji Electric Co Ltd | METHOD FOR PRODUCING A CONTACT SPRING STRUCTURE OF AN ELECTROMAGNETIC RELAY |
-
1990
- 1990-02-27 EP EP90103765A patent/EP0444223A1/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4644110A (en) * | 1984-08-01 | 1987-02-17 | Alpine Electronics Inc. | Dip switch having single terminal-contact support wafer |
| EP0200175A2 (en) * | 1985-05-03 | 1986-11-05 | SWF Auto-Electric GmbH | Electric switch, in particular a steering wheel switch for a motor vehicle |
| DE3829035A1 (en) * | 1987-10-14 | 1989-04-27 | Fuji Electric Co Ltd | METHOD FOR PRODUCING A CONTACT SPRING STRUCTURE OF AN ELECTROMAGNETIC RELAY |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19501855A1 (en) * | 1995-01-23 | 1996-07-25 | Kostal Leopold Gmbh & Co Kg | Multiple switch arrangement mfr. using single sheet metal cut=out bent into shape |
| DE19501855C2 (en) * | 1995-01-23 | 1998-12-24 | Kostal Leopold Gmbh & Co Kg | Method for producing a switch arrangement having a plurality of functionally independent electrical switches |
| US6141872A (en) * | 1998-06-15 | 2000-11-07 | Sumitomo Wiring Systems, Ltd. | Method of manufacturing products having a deformable connection for facilitating manufacture |
| DE10015993A1 (en) * | 2000-03-31 | 2001-10-11 | Heraeus Gmbh W C | Hybrid plug connector casing and method for producing it includes a basic plastic body and a set of conductors incapable of being removed. |
| DE10015993C2 (en) * | 2000-03-31 | 2002-01-31 | Heraeus Gmbh W C | Method of manufacturing a hybrid connector housing |
| DE102011115786A1 (en) * | 2011-10-06 | 2013-04-11 | Rolf Prettl | Method of manufacturing belt buckle-switch for belt buckle, involves providing electrically conductive lead frame element which comprises molding region and contact region |
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