EP0158725B1 - Push button - Google Patents

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Publication number
EP0158725B1
EP0158725B1 EP84115144A EP84115144A EP0158725B1 EP 0158725 B1 EP0158725 B1 EP 0158725B1 EP 84115144 A EP84115144 A EP 84115144A EP 84115144 A EP84115144 A EP 84115144A EP 0158725 B1 EP0158725 B1 EP 0158725B1
Authority
EP
European Patent Office
Prior art keywords
crosspiece
housing
actuating member
fixed
fixed contact
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP84115144A
Other languages
German (de)
French (fr)
Other versions
EP0158725A3 (en
EP0158725A2 (en
Inventor
Eugène Dipl.-Ing. Dellaert
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
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 filed Critical Siemens AG
Priority to AT84115144T priority Critical patent/ATE38108T1/en
Publication of EP0158725A2 publication Critical patent/EP0158725A2/en
Publication of EP0158725A3 publication Critical patent/EP0158725A3/en
Application granted granted Critical
Publication of EP0158725B1 publication Critical patent/EP0158725B1/en
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H15/00—Switches having rectilinearly-movable operating part or parts adapted for actuation in opposite directions, e.g. slide switch
    • H01H15/02—Details
    • H01H15/06—Movable parts; Contacts mounted thereon
    • H01H15/10—Operating parts
    • H01H15/102—Operating parts comprising cam devices
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/02—Details
    • H01H13/12—Movable parts; Contacts mounted thereon
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H1/00—Contacts
    • H01H1/58—Electric connections to or between contacts; Terminals
    • H01H1/5805—Connections to printed circuits

Definitions

  • the invention relates to a push button according to the preamble of claim 1.
  • Such a key is known from EP-A-0 028 000.
  • the fixed contacts are formed by two pins anchored in a base plate and penetrating them.
  • a cross piece is provided with two mutually parallel lugs that protrude at right angles from the cross piece and are each bent in a U-shape.
  • the actuating body acts with correspondingly designed projections or cams, which move with the actuating body parallel to the course of the fixed contacts, on the correspondingly wide free ends of the approaches of the crosspiece.
  • the crosspiece can also be cut between the approaches and be provided with connections that protrude from the button housing. This key can therefore be used to implement one or two-contact key functions as required.
  • the object of the present invention is therefore to design a key of the type mentioned at the outset in such a way that, while maintaining the basic key structure of the known key, a single-contact key which is relatively simple in comparison with this key is obtained.
  • the housing of the key has a lower part 7 with a base plate and side walls projecting at right angles from this.
  • the lower housing part 7 encloses an approximately cuboid interior.
  • An upper housing part 8 consists of a cover plate and at right angles from this protruding side walls which overlap the side walls of the lower part when the lower and upper parts are joined together. Nose-like projections of the lower part engage in window-like recesses in the upper part when the lower and upper parts are joined and thereby latch the upper part to the lower part.
  • the lower part 7 is provided with a hollow cylindrical projection 9 which is open towards the upper part and runs coaxially with the axis 19 of the key.
  • An actuating body 10 has a central pin-like part which is guided in the hollow cylindrical extension 9 of the lower part.
  • a helical compression spring 11 is clamped between the lower housing part 7 or the base plate of the lower housing part and the shoulders of the actuating body 10 and holds the actuating body firmly in a position remote from the key base.
  • a cross piece 1 made of flat material is supported with its large surfaces at right angles to the base plate and thus parallel to the direction of actuation of the actuating body 10.
  • a projection 2 projecting at right angles from this is connected in one piece.
  • This approach 2 is U-shaped and thereby forms a movable contact with the free end 18 of its counter leg cooperates with a first pin-shaped fixed contact 3a.
  • This fixed contact 3a penetrates the base plate of the lower part 7 and is anchored in this.
  • the fixed contact 3a is also aligned parallel to the direction of movement of the actuating body 10 and arranged in the housing in such a way that the actuating body 10 can move up and down in the housing next to the first fixed contact 3a with a protruding projection 12 projecting at right angles to its direction of movement.
  • the approach 2 on the crosspiece 1 is so wide that the free end 18 of the approach 2 can be supported either on the actuating projection 12 or on the first fixed contact 3a, depending on the position occupied by the actuating body.
  • the free end 18 of the attachment 2 is lifted off its associated first fixed contact 3a by the actuating projection 12. If the actuating body 10 is moved against the force of the helical compression spring 11 in the direction of the key base, the actuating projection 12 also moves downward together with the actuating body 10 and thereby releases the free end 18 of the attachment 2. This free end can thus resiliently lay against the first fixed contact 3a.
  • FIG. 2 shows, in addition to the first fixed contact 3a at the same distance from the key axis 19 and symmetrically to a plane 20 which bisects the key housing parallel to the axis 19, a second fixed contact 3b, which corresponds completely to the first fixed contact 3a, in the Anchored base plate.
  • the crosspiece 1 is as in particular.
  • Fig. 4 shows, provided with an angle 21, whereby in addition to a first cross-piece section 4a, from which the projection 2 protrudes, a second cross-piece section 4b is formed, which has a substantially smaller distance from the fixed contact 3b assigned to this section than the first crosspiece section 4a of the first fixed contact 3a.
  • a flap 5 is bent out of the crosspiece without the crosspiece being widened thereby.
  • the crosspiece section 4b With the free end 6 of this tab 5, the crosspiece section 4b is supported on the second fixed contact 3b.
  • the free end 6 of the tab 5 is directed towards the upper part 8 of the key housing.
  • a support wall 16, which is formed by the lower housing part 7, is provided on the side of the crosspiece section 4b facing away from the second fixed contact 3b.
  • Another section of the channel 14 is formed by a lower part side wall 17 and by a further housing projection of the lower part 7.
  • a housing pocket 15 is provided in the lower housing part 7 for receiving the U-shaped bend of the extension 2 (FIG. 1).
  • the cross piece 1 After the connection of the lower part 7 and the upper part 8, the cross piece 1 is fixed in a vibration-proof manner in the housing, so that the extension 2 can spring with its free end 18 depending on the position of the actuating body 10 against the first fixed contact 3a or through the actuating projection 12 from the first fixed contact 3a is lifted off without the connection between the second fixed contact 3b and the crosspiece section 4b being influenced by the tab 5.
  • these two parts can be coated with a tin layer at least in the mutual contact area.

Abstract

1. A push key with an actuating member (10) which is movable in a key housing in a straight line against the force of a spring element (11) from a position remote from the keying base to one close to the keying base, with two pin-like fixed contacts (3a, 3b) provided on one side of the actuating member (10) and running parallel to the direction of movement of the actuating member, said contacts being anchored in a base plate of the housing, with a crosspiece (1) made of electrically conductive flat material, which is fixed in the housing on the side of the two fixed contacts (3a, 3b) which faces away from the actuating member (10) transversely to said contacts and with its flat sides parallel to the course of the fixed contacts (3a, 3b), and with an attachment (2) projecting at right angles from the crosspiece (1) and bent in one piece with said crosspiece in the shape of a U, said attachment (2) being supported, independently of the position of the actuating member (10) with an end section (18), which faces away from the base plate, of its free-ending counter shank in a resilient manner either on the one (3a) of the two fixed contacts which is associated with said attachment, or on the actuating member (10), characterised in that the crosspiece (1) is bent in the area between the two fixed contacts (3a, 3b) in such a way that a first crosspiece section (4a) which is provided with the attachment (2) is at a greater distance from the first fixed contact (3a) which interacts with this attachment than the second crosspiece section (4b) is from the second fixed contact (3b), in that a fin (5) which is supported with its free end (6) continually, in a resilient manner, on the second fixed contact (3b) and which extends approximately parallel to said fixed contact (3b), is bent out of the second crosspiece section (4b) and in that the second crosspiece section (4b) is supported on its side which faces away from the second fixed contact (3b) on a housing wall (16) which is inclined towards the connecting line (13) of the two fixed contacts (3a, 3b) and the fin (5) is provided with its free end (6) facing away from the base plate (7) of the housing.

Description

Die Erfindung bezieht sich auf eine Drucktaste entsprechend dem Oberbegriff des Patentanspruches 1.The invention relates to a push button according to the preamble of claim 1.

Eine solche Taste ist aus der EP-A-0 028 000 bekannt. Bei dieser Taste werden die Festkontakte durch zwei in einer Bodenplatte verankerte und diese durchdringende Stifte gebildet Zur Bildung der beweglichen Kontakte ist ein Querstück mit zwei zueinander parallelen, rechtwinkelig vom Querstück abstehenden Ansätzen vorgesehen, die jeweils U-förmig gebogen sind. Beim Einsetzen des Querstückes in das Tastengehäuse liegen die U-förmig gebogenen Ansätze mit ihren freien Enden auf der von einem Betätigungskörper abgewandten Seite jeweils an einem der beiden Festkontakte an. Der Betätigungskörper wirkt mit entsprechend ausgebildeten Vorsprüngen oder Nocken, die sich mit dem Betätigungskörper parallel zum Verlauf der Festkontakte bewegen, auf die entsprechend breit bemessenen freien Enden der Ansätze des Querstückes ein. Das Querstück kann außerdem zwischen den Ansätzen durchgetrennt werden und mit Anschlüssen versehen sein, die aus dem Tastengehäuse ragen. Es lassen sich deshalb mit dieser Taste, je nach Bedarf, ein- oder zweikontaktige Tastenfunktionen realisieren.Such a key is known from EP-A-0 028 000. With this button, the fixed contacts are formed by two pins anchored in a base plate and penetrating them. To form the movable contacts, a cross piece is provided with two mutually parallel lugs that protrude at right angles from the cross piece and are each bent in a U-shape. When the crosspiece is inserted into the button housing, the free ends of the U-shaped lugs rest on one of the two fixed contacts on the side facing away from an actuating body. The actuating body acts with correspondingly designed projections or cams, which move with the actuating body parallel to the course of the fixed contacts, on the correspondingly wide free ends of the approaches of the crosspiece. The crosspiece can also be cut between the approaches and be provided with connections that protrude from the button housing. This key can therefore be used to implement one or two-contact key functions as required.

Eine solche Taste wird jedoch häufig nur als einkontaktige Taste verwendet. Für diesen Verwendungszweck ist der Aufbau der bekannten Taste jedoch relativ aufwendig.However, such a key is often only used as a single-contact key. However, the structure of the known key is relatively complex for this purpose.

Aufgabe vorliegender Erfindung ist es daher, eine Taste der eingangs genannten Art so auszubilden, daß man unter Beibehaltung des grundsätzlichen Tastenaufbaus der bekannten Taste eine gegenüber dieser Taste relativ einfach aufgebaute einkontaktige Taste erhält.The object of the present invention is therefore to design a key of the type mentioned at the outset in such a way that, while maintaining the basic key structure of the known key, a single-contact key which is relatively simple in comparison with this key is obtained.

Erfindungsgemäß ergibt sich die Lösung dieser Aufgabe aus den kennzeichnenden Merkmalen des Patentanspruches 1.According to the invention, this object is achieved from the characterizing features of patent claim 1.

Dadurch werden die Vorteile beibehalten, die sich aus dem Aufbau der bekannten Taste ergeben, so z. B., daß die Bodenplatte lediglich von gasdicht in dieser verankerten stiftförmigen Festkontakten durchdrungen wird, wodurch die Taste gegenüber einer Leiterplatte völlig geschlossen ist und durch Verlöten der stiftförmigen Festkontakte mit ihren außerhalb des Tastengehäuses befindlichen Abschnitten in Rasterbohrungen der Leiterplatte mit dieser verbunden werden kann, ohne daß beim Verlöten auftretende schädliche Dämpfe ins Innere des Tastengehäuses eindringen können. Ebenso ist das Tastengehäuse gegenüber Waschvorgängen zur Reinigung der Leiterplatte auf dieser Seite völlig dicht.This maintains the advantages that result from the structure of the known button, such. B. that the bottom plate is penetrated only by gas-tight in this anchored pin-shaped fixed contacts, whereby the button is completely closed to a circuit board and can be connected to this by soldering the pin-shaped fixed contacts with their outside the button housing in grid holes of the circuit board without this that harmful vapors occurring during soldering can penetrate into the interior of the key housing. The button housing is also completely sealed against washing processes for cleaning the circuit board on this side.

Durch die Abwinkelung des Querstückes wird außerdem zwischen dem abgewinkelten Querstück-Abschnitt und dem zweiten Festkontakt ein für die Federwirkung des herausgebogenen Lappens optimaler Abstand erzielt, während zugleich der demgegenüber relativ größere Abstand zwischen dem ersten Querstück-Äbschnitt und dem ersten Festkontakt ein optimales Zusammenwirken des U-förmig gebogenen Ansatzes mit dem ersten Festkontakt bzw. mit einem Vorsprung des Betätigungskörpers gewährleistet. Das mit dem Ansatz und dem Lappen versehene Querstück läßt sich auch unkompliziert in das Tastengehäuse einsetzen.By angling the cross piece between the angled cross section and the second fixed contact an optimal distance for the spring action of the bent tab is achieved, while at the same time the relatively larger distance between the first cross section and the first fixed contact optimal interaction of the U -shaped curved approach with the first fixed contact or with a projection of the actuating body guaranteed. The cross piece with the shoulder and the rag can also be easily inserted into the button housing.

Ein Ausführungsbeispiel der Erfindung wird nachfolgend anhand von fünf Figuren noch näher erläutert.An embodiment of the invention is explained in more detail below with reference to five figures.

Dabei zeigen, jeweils mehr oder weniger stark vergrößert,

  • Fig. 1 eine Seitenansicht der geschnitten dargestellten Drucktaste,
  • Fig. 2 eine Ansicht von oben auf die Drucktaste mit geschnittenem Gehäuseoberteil und vereinfacht dargestelltem Betätigungskörper und die Fig. 3, 4 und 5 verschiedene Ansichten des Querstücks mit U-förmigem Ansatz und mit herausgebogenem Lappen.
Show, each enlarged to a greater or lesser extent,
  • 1 is a side view of the push button shown in section,
  • Fig. 2 is a top view of the push button with a cut upper part of the housing and simplified actuating body and Fig. 3, 4 and 5 different views of the crosspiece with a U-shaped extension and with a bent tab.

Im einzelnen ist den Figuren zu entnehmen, daß das Gehäuse der Taste ein Unterteil 7 mit einer Bodenplatte und rechtwinkelig von dieser abstehenden Seitenwänden aufweist. Das Gehäuseunterteil 7 umschließt dabei einen etwa quaderförmigen Innenraum. Ein Gehäuseoberteil 8 besteht aus einer Deckplatte und rechtwinkelig von dieser abstehenden Seitenwänden, die beim Zusammenfügen von Unter- und Oberteil die Seitenwände des Unterteiles überlappen. Nasenartige Vorsprünge des Unterteiles greifen beim Zusammenfügen von Unter- und Oberteil in fensterartige Aussparungen des Oberteiles ein und verrasten dadurch das Oberteil am Unterteil. Das Unterteil 7 ist mit einem hohlzylindrischen Ansatz 9 versehen, der zum Oberteil hin offen ist und koaxial zur Achse 19 der Taste verläuft. Ein Betätigungskörper 10 weist einen zentralen stiftartigen Teil auf, der im hohlzylindrischen Ansatz 9 des Unterteiles geführt ist. Zwischen dem Gehäuseunterteil 7 bzw. der Bodenplatte des Gehäuseunterteiles und Schultern des Betätigungskörpers 10 ist eine Schraubendruckfeder 11 verspannt und hält den Betätigungskörper in einer tastenbasisfernen Position fest.In detail, it can be seen from the figures that the housing of the key has a lower part 7 with a base plate and side walls projecting at right angles from this. The lower housing part 7 encloses an approximately cuboid interior. An upper housing part 8 consists of a cover plate and at right angles from this protruding side walls which overlap the side walls of the lower part when the lower and upper parts are joined together. Nose-like projections of the lower part engage in window-like recesses in the upper part when the lower and upper parts are joined and thereby latch the upper part to the lower part. The lower part 7 is provided with a hollow cylindrical projection 9 which is open towards the upper part and runs coaxially with the axis 19 of the key. An actuating body 10 has a central pin-like part which is guided in the hollow cylindrical extension 9 of the lower part. A helical compression spring 11 is clamped between the lower housing part 7 or the base plate of the lower housing part and the shoulders of the actuating body 10 and holds the actuating body firmly in a position remote from the key base.

In einer zum Oberteil hin sich öffnenden Keilrinne 14 des Unterteils 7 ist ein aus Flachmaterial bestehendes Querstück 1 mit seinen großen Oberflächen rechtwinkelig zur Bodenplatte und damit parallel zur Betätigungsrichtung des Betätigungskörpers 10 gelagert. Beim Zusammenfügen von Unterteil 7 und Oberteil 8 werden an der dem Oberteil 8 zugewandten Kante des Querstückes 1 vorgesehene dreieckförmige Vorsprünge in das Kunststoffmaterial des Oberteiles eingedrückt und dadurch das Querstück im Tastengehäuse fixiert.In a wedge groove 14 of the lower part 7 opening towards the upper part, a cross piece 1 made of flat material is supported with its large surfaces at right angles to the base plate and thus parallel to the direction of actuation of the actuating body 10. When the lower part 7 and the upper part 8 are joined together, triangular projections provided on the edge of the cross piece 1 facing the upper part 8 are pressed into the plastic material of the upper part and the cross piece is thereby fixed in the button housing.

Mit dem Querstück 1 hängt ein rechtwinkelig von diesem abstehender Ansatz 2 einstückig zusammen. Dieser Ansatz 2 ist U-förmig gebogen und bildet dadurch mit dem freien Ende 18 seines Gegenschenkels einen beweglichen Kontakt, der mit einem ersten stiftförmigen Festkontakt 3a zusammenwirkt. Dieser Festkontakt 3a durchdringt die Bodenplatte des Unterteiles 7 und ist in dieser verankert. Der Festkontakt 3a ist außerdem parallel zur Bewegungsrichtung des Betätigungskörpers 10 ausgerichtet und im Gehäuse so angeordnet, daß sich der Betätigungskörper 10 mit einem rechtwinkelig zu seiner Bewegungsrichtung von diesem abstehenden Betätigungsvorsprung 12 neben dem ersten Festkontakt 3a im Gehäuse auf- und abbewegen kann.With the cross piece 1, a projection 2 projecting at right angles from this is connected in one piece. This approach 2 is U-shaped and thereby forms a movable contact with the free end 18 of its counter leg cooperates with a first pin-shaped fixed contact 3a. This fixed contact 3a penetrates the base plate of the lower part 7 and is anchored in this. The fixed contact 3a is also aligned parallel to the direction of movement of the actuating body 10 and arranged in the housing in such a way that the actuating body 10 can move up and down in the housing next to the first fixed contact 3a with a protruding projection 12 projecting at right angles to its direction of movement.

Der Ansatz 2 am Querstück 1 ist so breit ausgebildet, daß sich das freie Ende 18 des Ansatzes 2 entweder am Betätigungsvorsprung 12 oder am ersten Festkontakt 3a abstützen kann, je nach der vom Betätigungskörper eingenommenen Position. Wie Fig. 1 zeigt, ist in der tastenbasisfernen Position des Betätigungskörpers 10 das freie Ende 18 des Ansatzes 2 durch den Betätigungsvorsprung 12 von seinem zugeordneten ersten Festkontakt 3a abgehoben. Wird der Betätigungskörper 10 gegen die Kraft der Schraubendruckfeder 11 in Richtung zur Tastenbasis bewegt, so bewegt sich zusammen mit dem Betätigungskörper 10 auch der Betätigungsvorsprung 12 nach unten und gibt dadurch das freie Ende 18 des Ansatzes 2 frei. Dieses freie Ende kann sich dadurch federnd gegen den ersten Festkontakt 3a legen.The approach 2 on the crosspiece 1 is so wide that the free end 18 of the approach 2 can be supported either on the actuating projection 12 or on the first fixed contact 3a, depending on the position occupied by the actuating body. As shown in FIG. 1, in the position of the actuating body 10 remote from the key base, the free end 18 of the attachment 2 is lifted off its associated first fixed contact 3a by the actuating projection 12. If the actuating body 10 is moved against the force of the helical compression spring 11 in the direction of the key base, the actuating projection 12 also moves downward together with the actuating body 10 and thereby releases the free end 18 of the attachment 2. This free end can thus resiliently lay against the first fixed contact 3a.

Wie Fig. 2 zeigt, ist neben dem ersten Festkontakt 3a in gleichem Abstand von der Tastenachse 19 und symmetrisch zu einer Ebene 20, die das Tastengehäuse parallel zur Achse 19 halbiert, ein zweiter Festkontakt 3b, der dem ersten Festkontakt 3a völlig entspricht, in der Gehäusebodenplatte verankert.2 shows, in addition to the first fixed contact 3a at the same distance from the key axis 19 and symmetrically to a plane 20 which bisects the key housing parallel to the axis 19, a second fixed contact 3b, which corresponds completely to the first fixed contact 3a, in the Anchored base plate.

Das Querstück 1 ist wie insbesondere. Fig. 4 zeigt, mit einer Abwinkelung 21 versehen, wodurch neben einem ersten Querstück-Abschnitt 4a, von dem der Ansatz 2 absteht, ein zweiter Querstück-Abschnitt 4b gebildet wird, der von dem diesem Abschnitt zugeordneten Festkontakt 3b einen wesentlich kleineren Abstand aufweist als der erste Querstück-Abschnitt 4a von dem ersten Festkontakt 3a.The crosspiece 1 is as in particular. Fig. 4 shows, provided with an angle 21, whereby in addition to a first cross-piece section 4a, from which the projection 2 protrudes, a second cross-piece section 4b is formed, which has a substantially smaller distance from the fixed contact 3b assigned to this section than the first crosspiece section 4a of the first fixed contact 3a.

Am Ende des zweiten Querstück-Abschnittes 4b ist aus dem Querstück, ohne daß das Querstück dadurch verbreitert wird, ein Lappen 5 herausgebogen. Mit dem freien Ende 6 dieses Lappens 5 stützt sich der Querstück-Abschnitt 4b am zweiten Festkontakt 3b ab. Das freie Ende 6 des Lappens 5 ist dabei zum Oberteil 8 des Tastengehäuses gerichtet. Auf der vom zweiten Festkontakt 3b abgewandten Seite des Querstück-Abschnittes 4b ist eine Abstützwand 16, die durch das Gehäuseunterteil 7 gebildet wird, vorgesehen. Diese Abstützwand 16 begrenzt zusammen mit einem von der Bodenplatte abstehenden Gehäusevorsprung einen Abschnitt der sich zum Gehäuseoberteil öffnenden keilförmigen Rinne 14. Ein anderer Abschnitt der Rinne 14 wird durch eine Unterteil-Seitenwand 17 und durch einen weiteren Gehäusevorsprung des Unterteiles 7 gebildet. Zwischen den beiden Rinnenabschnitten, die einerseits dem ersten Querstück-Abschnitt 4a und andererseits dem zweiten Querstück-Abschnitt 4b zugeordnet sind, ist im Gehäuseunterteil 7 eine Gehäusetasche 15 zur Aufnahme der U-förmigen Biegung des Ansatzes 2 vorgesehen (Fig. 1).At the end of the second crosspiece section 4b, a flap 5 is bent out of the crosspiece without the crosspiece being widened thereby. With the free end 6 of this tab 5, the crosspiece section 4b is supported on the second fixed contact 3b. The free end 6 of the tab 5 is directed towards the upper part 8 of the key housing. A support wall 16, which is formed by the lower housing part 7, is provided on the side of the crosspiece section 4b facing away from the second fixed contact 3b. This support wall 16, together with a housing projection protruding from the base plate, delimits a section of the wedge-shaped channel 14 opening towards the housing upper part. Another section of the channel 14 is formed by a lower part side wall 17 and by a further housing projection of the lower part 7. Between the two channel sections, which are assigned on the one hand to the first crosspiece section 4a and on the other hand to the second crosspiece section 4b, a housing pocket 15 is provided in the lower housing part 7 for receiving the U-shaped bend of the extension 2 (FIG. 1).

Wird der Lappen 5 entsprechend weit vom Querstück-Abschnitt 4b weggebogen, so wird dadurch eine ausreichend große Federwirkung des Lappens erzeugt, die dafür sorgt, daß der Lappen 5 mit seinem freien Ende 6 betriebssicher gegen den zweiten Festkontakt 3b gedrückt wird, wenn das Querstück in das Gehäuseunterteil 7 eingesetzt ist.If the flap 5 is bent far away from the crosspiece section 4b, a sufficiently large spring action of the flap is thereby generated, which ensures that the flap 5 with its free end 6 is pressed reliably against the second fixed contact 3b when the crosspiece is in the lower housing part 7 is inserted.

Nach der Verbindung von Unterteil 7 und Oberteil 8 ist das Querstück 1 rüttelsicher im Gehäuse fixiert, so daß der Ansatz 2 mit seinem freien Ende 18 je nach der Position des Betätigungskörpers 10 gegen den ersten Festkontakt 3a federn kann oder durch den Betätigungsvorsprung 12 vom ersten Festkontakt 3a abgehoben wird, ohne daß dadurch die Verbindung zwischen dem zweiten Festkontakt 3b und dem Querstück-Abschnitt 4b über den Lappen 5 beeinflußt wird.After the connection of the lower part 7 and the upper part 8, the cross piece 1 is fixed in a vibration-proof manner in the housing, so that the extension 2 can spring with its free end 18 depending on the position of the actuating body 10 against the first fixed contact 3a or through the actuating projection 12 from the first fixed contact 3a is lifted off without the connection between the second fixed contact 3b and the crosspiece section 4b being influenced by the tab 5.

Zur Herstellung einer guten elektrischen Verbindung zwischen dem zweiten Festkontakt 3b und dem Lappen 5 können diese beiden Teile zumindest im gegenseitigen Berührungsbereich mit einer Zinnschicht überzogen sein.To establish a good electrical connection between the second fixed contact 3b and the tab 5, these two parts can be coated with a tin layer at least in the mutual contact area.

Außerdem ist es selbstverständlich möglich, zwischen dem zweiten Festkontakt 3b und dem Lappen 5, z. B. mit Hilfe eines Lasers, zusätzlich eine Schweißverbindung herzustellen.In addition, it is of course possible to between the second fixed contact 3b and the tab 5, z. B. with the help of a laser, additionally create a welded joint.

BezugszeichenlisteReference symbol list

  • 1 Querstück1 cross piece
  • 2 Ansatz2 approach
  • 3a erster Festkontakt3a first fixed contact
  • 3b zweiter Festkontakt3b second fixed contact
  • 4a erster Querstück-Abschnitt4a first cross piece section
  • 4b zweiter Querstück-Abschnitt4b second cross piece section
  • 5 Lappen5 rags
  • 6 freies Ende6 free end
  • 7 Gehäuseunterteil7 lower housing part
  • 8 Gehäuseoberteil8 upper housing part
  • 9 hohlzylindrischer Ansatz9 hollow cylindrical approach
  • 10 Betätigungskörper10 actuators
  • 11 Schraubendruckfeder11 helical compression spring
  • 12 Betätigungsvorsprung12 actuation projection
  • 13 Verbindungslinie13 connecting line
  • 14 Keilrinne14 channel
  • 15 Gehäusetasche15 case pocket
  • 16 Abstützwand16 support wall
  • 17 Seitenwand17 side wall
  • 18 freies Ende18 free end
  • 19 Tastenachse19 key axis
  • 20 Ebene20 level
  • 21 Abwinkelung21 deflection

Claims (2)

1. A push key with an actuating member (10) which is movable in a key housing in a straight line against the force of a spring element (11) from a position remote from the keying base to one close to the keying base, with two pin-like fixed contacts (3a, 3b) provided on one side of the actuating member (10) and running parallel to the direction of movement of the actuating member, said contacts being anchored in a base plate of the housing, with a crosspiece (1) made of electrically conductive flat material, which is fixed in the housing on the side of the two fixed contacts (3a, 3b) which faces away from the actuating member (10) transversely to said contacts and with its flat sides parallel to the course of the fixed contacts (3a, 3b), and with an attachment (2) projecting at right angles from the crosspiece (1) and bent in one piece with said crosspiece in the shape of a U, said attachment (2) being supported, independently of the position of the actuating member (10) with an end section (18), which faces away from the base plate, of its free-ending counter shank in a resilient manner either on the one (3a) of the two fixed contacts which is associated with said attachment, or on the actuating member (10), characterised in that the crosspiece (1) is bent in the area between the two fixed contacts (3a, 3b) in such a way that a first crosspiece section (4a) which is provided with the attachment (2) is at a greater distance from the first fixed contact (3a) which interacts with this attachment than the second crosspiece section (4b) is from the second fixed contact (3b), in that a fin (5) which is supported with its free end (6) continually, in a resilient manner, on the second fixed contact (3b) and which extends approximately parallel to said fixed contact (3b), is bent out of the second crosspiece section (4b) and in that the second crosspiece section (4b) is supported on its side which faces away from the second fixed contact (3b) on a housing wall (16) which is inclined towards the connecting line (13) of the two fixed contacts (3a, 3b) and the fin (5) is provided with its free end (6) facing away from the base plate (7) of the housing.
2. A push key as claimed in Claim 1, characterised in that the free end (6) of the fin (5) and the associated second fixed contact (3b) are coated with a tin coating, at least in the area of mutual contact.
EP84115144A 1984-04-13 1984-12-11 Push button Expired EP0158725B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84115144T ATE38108T1 (en) 1984-04-13 1984-12-11 PUSH BUTTON.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3414114 1984-04-13
DE3414114 1984-04-13

Publications (3)

Publication Number Publication Date
EP0158725A2 EP0158725A2 (en) 1985-10-23
EP0158725A3 EP0158725A3 (en) 1986-11-12
EP0158725B1 true EP0158725B1 (en) 1988-10-19

Family

ID=6233564

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84115144A Expired EP0158725B1 (en) 1984-04-13 1984-12-11 Push button

Country Status (5)

Country Link
EP (1) EP0158725B1 (en)
JP (1) JPS60232623A (en)
AT (1) ATE38108T1 (en)
DE (2) DE8411745U1 (en)
NO (1) NO851410L (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3711789A1 (en) * 1987-04-08 1988-10-27 Kostal Leopold Gmbh & Co Kg Push-button switch
US9374102B1 (en) 2015-12-11 2016-06-21 Freescale Semiconductor, Inc. Dynamic analog to digital converter (ADC) triggering

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3842229A (en) * 1973-07-05 1974-10-15 Texas Instruments Inc Keyboard pushbutton switch
US3944760A (en) * 1974-04-08 1976-03-16 Cts Corporation Switch assembly having slider actuator insulating plate inserted between normally closed contacts
DE2510902C3 (en) * 1975-03-13 1979-10-04 J. & J. Marquardt, 7201 Rietheim Electric switch
JPS537399U (en) * 1976-07-02 1978-01-23
FR2395584A1 (en) * 1977-06-21 1979-01-19 Wabco Westinghouse Electrical contactor for signal circuit - has control rod with notch moving elastic switch prong against fixed contact
DE2943855C2 (en) * 1979-10-30 1982-10-21 Siemens AG, 1000 Berlin und 8000 München Pushbutton
JPS578589U (en) * 1980-06-16 1982-01-16

Also Published As

Publication number Publication date
DE8411745U1 (en) 1986-02-06
ATE38108T1 (en) 1988-11-15
DE3474741D1 (en) 1988-11-24
EP0158725A3 (en) 1986-11-12
EP0158725A2 (en) 1985-10-23
JPS60232623A (en) 1985-11-19
NO851410L (en) 1985-10-14

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