DE3138379C1

DE3138379C1 - Electrical switch

Info

Publication number: DE3138379C1
Application number: DE19813138379
Authority: DE
Inventors: Werner-Ernst 5980 Werdohl-Eveking Berginski
Original assignee: Leopold Kostal GmbH and Co KG
Current assignee: Leopold Kostal GmbH and Co KG
Priority date: 1981-09-26
Filing date: 1981-09-26
Publication date: 1982-12-16

Abstract

An electrical switch is proposed, in which relatively low material and production costs and an excellent functional behaviour are achieved by means of a special arrangement and design of the connecting contact parts required to make contact and of the associated contact links.

Description

Erfindungsgemäß wird die Aufgabe durch die im kennzeichnenden Teil des Hauptanspruches angegebenen Merkmale gelöst. According to the invention, the object is achieved by the im characteristic Part of the main claim specified features solved.

Mit einer solchen Ausgestaltung eines Schalters der eingangs erwähnten Art ist insbesondere der Vorteil verbunden, daß durch die linienförmige Kontaktierung bei jeder Kontaktgabe der sogenannte Selbstreinigungseffekt eintritt. With such a configuration of a switch of the type mentioned at the beginning Art has the particular advantage that the linear contact the so-called self-cleaning effect occurs with every contact.

Diese Kontaktierungsart erhält noch durch die in den betreffenden Unteransprüchen angegebenen, sich auf die Ausgestaltung und die Anordnung der Kontaktbrükke sowie der zugeordneten Kontaktteile beziehenden Merkmale eine günstig sich auswirkende zusätzliche Komponente. Besonders vorteilhaft bezüglich der Kontaktierung ist schließlich der Einsatz eines zusätzlichen, die Kontaktkraft erhöhenden Bauelementes, und zwar deshalb, weil die im Schalter vorhandene Druckfeder naturgemäß in der sich auf den geschlossenen Zustand des Schalters beziehenden Stellung die geringste Kraft ausübt. This type of contact is still given by the relevant Subclaims specified, refer to the design and arrangement of the contact bridge as well as the associated contact parts related features a beneficial effect additional component. Finally, it is particularly advantageous with regard to the contacting the use of an additional component that increases the contact force, namely This is because the compression spring in the switch is naturally in the closed position of the switch related position exerts the least force.

Anhand eines in der Zeichnung dargestellten Ausführungsbeispieles sei die Erfindung näher erläutert Wie aus der Zeichnung hervorgeht, besteht der erfindungsgemäße Schalter im wesentlichen aus einem, sich aus einem Deckelteil 1' und einem Sockelteil 1" zusammensetzenden Isolierstoffgehäuse 1, einem darin längsbeweglich geführten Betätigungsorgan 2 und einer Anzahl von unter dem Einfluß einer Druckfeder 3 stehenden, für den Schaltvorgang erforderlichen Kontaktteilen 6. Based on an embodiment shown in the drawing the invention is explained in more detail. As can be seen from the drawing, the switch according to the invention essentially consists of a, from a cover part 1 ' and a base part 1 ″ composing insulating material housing 1, a longitudinally movable therein guided actuator 2 and a number of under the influence of a compression spring 3 standing contact parts required for the switching process 6.

An dem Sockelteil 1" des Isolierstoffgehäuses 1 sind dabei gegebenenfalls der Einfachheit halber nicht veranschaulichte Befestigungselemente angeordnet, so daß dasselbe z. B. in den einer Tür zugeordneten Holm eines Kraftfahrzeuges einsetzbar ist, wobei ein am Deckelteil 1' vorhandener, gleichzeitig zur Führung des Betätigungsorganes 2 dienender Ansatz 4 eine Öffnung der betreffenden Wand des Holmes durchdringt, so daß das nach außen ragende Ende des Betätigungsorganes 2 von der Türfalz beeinflußbar, d. h. verstellbar ist. Der Ansatz 4 ist mit einem Außengewinde versehen, so daß der Schalter über eine entsprechende Mutter an der Wand gegebenenfalls über zusätzliche Dichtelemente fixierbar ist. At the base part 1 ″ of the insulating housing 1 are optionally for the sake of simplicity, not illustrated fastening elements arranged so that the same z. B. can be used in the spar of a motor vehicle assigned to a door is, with one on the cover part 1 'present at the same time for guiding the actuator 2 serving approach 4 penetrates an opening in the relevant wall of the spar, so that the outwardly protruding end of the actuator 2 can be influenced by the door rebate, d. H. is adjustable. The approach 4 is provided with an external thread, so that the switch via a corresponding nut on the wall, if necessary via additional Sealing elements is fixable.

Das Betätigungsorgan 2 weist im Bereich seines innenliegenden Endes einen Bereich 2' mit geringerem Querschnitt auf, während der Endbereich 2" konisch ausläuft Auf dem Bereich 2' ist eine Kontaktbrücke 5 beweglich angeordnet, wobei die etwa U-förmig ausgestaltete, aus Flachbandmaterial hergestellte Kontaktbrücke 5 in ihrem zentralen Bereich mit einer Öffnung 5' versehen ist, die den Bereich 2' mit Spiel umfaßt Die Kontaktbrücke 5 ist weiterhin in ihrem zentralen Bereich mit sickenartigen Erhebungen 5" versehen, die sich auf der zwischen dem Bereich 2' und dem Endbereich 2" vorhandenen Schulter abstützen. The actuating member 2 has in the area of its inner end an area 2 'with a smaller cross-section, while the end area 2 "is conical expires On the area 2 'a contact bridge 5 is movably arranged, wherein the approximately U-shaped contact bridge made from flat strip material 5 is provided in its central area with an opening 5 'which the area 2 'includes play. The contact bridge 5 is still in its central area provided with bead-like elevations 5 ", which are on the between the area 2 'and the end area 2 "support the existing shoulder.

Die gegenüber dem Mittenbereich um etwa 90" abgewinkelten Endbereiche 5"' der Kontaktbrücke 5 weisen infolge Verringerung der Breite des Flachbandmaterials einen keilförmigen Verlauf auf (Einzelheit bei X) und stehen darüber mit der Kontaktierung dienenden Endbereichen 6' von ebenfalls aus Flachbandmaterial gebildeten, zwecks Leitungsanschluß mit gegenüberliegenden, für den elektrischen Anschluß bestimmten Endbereichen 6" aus dem Isolierstoffgehäuse 1 herausragenden Kontaktteilen 6 in Verbindung.The end areas angled by approximately 90 "with respect to the central area 5 "'of the contact bridge 5 have a reduction in the width of the flat strip material a wedge-shaped course (detail at X) and stand above it with the contact serving end regions 6 'of also formed from flat strip material, for the purpose Line connection with opposite, intended for the electrical connection End areas 6 ″ from the insulating housing 1 protruding contact parts 6 in Link.

Anstelle einer Kontaktbrücke 5 aus Flachbandmaterial kann auch eine solche aus Draht verwendet werden, wobei die zuvor beschriebenen Ausgestaltungen der Kontaktbrücke 5 in äquivalenter Form zum Ausdruck kommen müssen. Die Endbereiche 6' der Kontaktteile 6 sind gabelförmig ausgebildet, so daß die schräg verlaufenden Flächen oder zwei der denselben zugehörigen Kanten der Endbereiche 5"' der Kontaktbrücke 5 mit zwei Kanten der innenliegenden Flächen der Endbereiche 6' bei geschlossenem Zustand des Schalters in Eingriff stehen (Einzelheit bei X). Der erforderliche Kontaktdruck wird dabei durch die gleichzeitig die Rückführung des Betätigungsorganes 2 gewährleistende Druckfeder 3 aufgebracht, die sich einerseits am Sockelteil 1" und andererseits an der Kontaktbrücke 5 abstützt. Instead of a contact bridge 5 made of flat strip material, a those made of wire are used, with the configurations described above the contact bridge 5 must be expressed in equivalent form. The end areas 6 'of the contact parts 6 are fork-shaped so that the inclined Areas or two of the same associated edges of the end regions 5 "'of the contact bridge 5 with two edges of the inner surfaces of the end regions 6 'when the State of the switch engaged (detail at X). The required contact pressure is thereby guaranteed by the return of the actuator 2 at the same time Pressure spring 3 applied, on the one hand on the base part 1 "and on the other hand is supported on the contact bridge 5.

Dadurch, daß die Endbereiche 5"' der Kontaktbrücke 5 und die Endbereiche 6' der Kontaktteile 6 frei bewegbar im Isolierstoffgehäuse 1 angeordnet und die Endbereiche 6' der Kontaktteile 6 gegenüber ihren parallel zur Längsachse des Isolierstoffgehäuses 1 verlaufenden Mittenbereichen 6"' um einen Winkel von mehr als 90" abgewinkelt sind, ergibt sich ein vorzügliches Kontaktverhalten. Dies wird noch unterstützt durch einen am Deckelteil 1' befestigten, das Betätigungsorgan 2 mit Spiel umfassenden Kunststoffring 7, in den magnetische Partikel eingefügt sind, so daß auf die mit magnetisch ansprechenden Bereichen versehene Kontaktbrücke 5 eine die Kontaktkraft erhöhende Kraft ausgeübt wird. Because the end regions 5 "'of the contact bridge 5 and the end regions 6 'of the contact parts 6 arranged to be freely movable in the insulating housing 1 and the End regions 6 'of the contact parts 6 opposite their parallel to the longitudinal axis of the insulating material housing 1 extending middle areas 6 "'angled at an angle of more than 90" there is excellent contact behavior. This is still supported by one attached to the cover part 1 ', encompassing the actuating member 2 with play Plastic ring 7, are inserted into the magnetic particles, so that on the with magnetically responsive areas provided contact bridge 5 a the contact force increasing force is exerted.

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Claims

Claims: 1. Electrical switch, in particular door contact switch, essentially consisting of an insulating housing and one in the direction the longitudinal axis adjustably guided, partially protruding actuator, on which one is under the action of a compression spring and formed from flat strip material, with its central area extending approximately perpendicular to the longitudinal axis contact bridge is held, the end areas with freely resilient, angled and the contact Serving end regions of at least two intended for the electrical connection End areas provided, fastened in the insulating housing, with their middle areas contact parts extending approximately parallel to the longitudinal axis of the switch Flat strip material can be connected, the end regions serving for contacting the contact bridge and the contact parts in the connected state at an angle are related to each other, so that the end areas (5 "', 6') of the contact bridge (5) also angled and freely resilient are that the end regions (5 "') of the contact bridge (5) as a result of reducing the width of the flat strip material have a wedge-shaped course that the associated End regions (6 ') of the contact parts (6) are fork-shaped and that in the connected State of the end areas (5 "', 6') of the contact bridge (5) and the contact parts (6) stand to each other in such a way that the inclined side surfaces or two of the the same associated edges of the end regions (5 "') of the contact bridge (5) with each one edge of the two inner surfaces of the fork-shaped end regions (6 ') the contact parts (6) are in engagement.

2. Electrical switch according to claim 1, characterized in that that the freely movable end regions (5 "', 6') of the contact bridge (5) and the contact parts (6) are less than 90 "from one another.

3. Electrical switch according to claim 1, characterized in that that the end areas (5 "') of the contact bridge (5) relative to the central area by about 900 are angled

4. Electrical switch according to claim 1, characterized in that that the end areas (6 ') of the contact parts (6) opposite their central areas (6 "') are angled at an angle greater than 90 ".

5. Electrical switch according to claim 1, characterized in that that the contact bridge (5) on the actuator (2) is freely movable.

6. Electrical switch according to claim 1, characterized in that that the contact bridge (5) has an opening (5 ') which has a smaller cross section Area (2 ') of the actuating member (2) and of a larger cross-section End region (2 ") of the actuator (2) is held.

7. Electrical switch according to claim 6, characterized in that that the contact bridge (5) - as known per se - with in its central area several on the shoulder facing the area (2 ') with a smaller cross-section of the end region (2 ") of the actuating member (2) which is larger in cross section bead-like elevations (5 ") is provided.

8. Electrical switch according to claim 1, characterized in that that the contact bridge (5) in the area of the connection points with the contact parts (6) lying on the insulating housing (1) held, the actuator (2) encompassing, an additional contact force exerting magnetic magnetic force on the contact bridge (5) Component (7) is assigned.

9. Electrical switch according to claim 8, characterized in that that the magnetic component (7) consists of a magnetic particle Plastic body is made.

10. Electrical switch according to claim 9, characterized in that that the magnetic component (7) is annular and one cylindrical designed area of the actuator (2) includes concentrically.

The present invention relates to an electrical switch according to the generic term of the main claim.

Such switching devices, e.g. used as door contact switches, are operated as so-called break contacts, d. i.e., if two parts associated with one another (e.g. door and door pillar) are brought into connection with each other, the opens switches engaged with these parts.

From DE-OS 27 37 221 an electrical switch has become known, its design on part of the features of the preamble of the main claim is based. The disadvantage of this embodiment, however, is that with regard to the contacting a relatively high effort is made. This can be seen in particular in that in addition to the normal contact material, a more noble contact material is used becomes, which entails high material and manufacturing costs. Incidentally, is with one Such a conception does not ensure contact cleaning, thereby reducing the functionality of the switch over a long period of time - quite considerable impairment learns.

In addition, DE-PS 9 61115 is a door contact switch provided switching device of the type mentioned became known. This But switch is also disadvantageous in that a very considerable manufacturing cost is required. However, it is even more important that the contacting force of are applied to the current-carrying and thus warming contact parts must, whereby a perfect contact over a longer period of time is not is to be guaranteed. Finally, it should be noted that contact cleaning itself with a switch designed in this way results only to an unsatisfactory degree, namely because the contact is relatively large, d. H. with relative low specific surface pressure takes place.

The present invention is based on the object of an electrical To create a switch that differs from the known embodiments by a simpler construction and associated lower material and manufacturing costs as well as better functionality.