EP0450319A2 - Push-button switch - Google Patents

Push-button switch Download PDF

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Publication number
EP0450319A2
EP0450319A2 EP19910103229 EP91103229A EP0450319A2 EP 0450319 A2 EP0450319 A2 EP 0450319A2 EP 19910103229 EP19910103229 EP 19910103229 EP 91103229 A EP91103229 A EP 91103229A EP 0450319 A2 EP0450319 A2 EP 0450319A2
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EP
European Patent Office
Prior art keywords
push
microswitch
key
spring
button
Prior art date
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Granted
Application number
EP19910103229
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German (de)
French (fr)
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EP0450319B1 (en
EP0450319A3 (en
Inventor
Bernd Dipl.-Ing. Hildebrand
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BOSCH-SIEMENS HAUSGERAETE GMBH
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Individual
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Publication of EP0450319A2 publication Critical patent/EP0450319A2/en
Publication of EP0450319A3 publication Critical patent/EP0450319A3/en
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Publication of EP0450319B1 publication Critical patent/EP0450319B1/en
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    • 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
    • H01H13/10—Bases; Stationary contacts mounted thereon
    • 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
    • H01H13/20—Driving mechanisms
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2233/00—Key modules
    • H01H2233/01—Key modules mounted on laykey
    • H01H2233/014—Snap coupling

Definitions

  • the invention relates to a key switch with one or more key tappets guided and sprung in a supporting body with a defined end position and with one set of contacts per key tappet.
  • key switches are also known in which the terminal lugs of the contact sets are formed in groups as plug connections for group plugs are. Both types of contact sets have the disadvantage that the switches cannot be integrated into an electronic circuit board and that large actuation forces have to be expended for the actuation of the key tappets and long actuation distances have to be overcome.
  • the key tappets can act as simply non-latching keys or can be held in the switching position after a single press by means of a mechanical latching device and can be released again from the switching position by pressing again.
  • the invention has for its object to avoid the disadvantages described in a key switch of the type mentioned in that so-called microswitches can be used for such key switches.
  • the contact sets are designed as mechanically and electrically connected to a circuit board that is physically separable from the supporting body and that each key tappet for the associated microswitch has an actuating finger which is displaceably guided on the key tappet in its direction of actuation and by means of a this spring acting spring is held freely in front of the microswitch when the push button is triggered and presses the push button under a spring tension on the microswitch which is greater than the actuating force required for the microswitch.
  • the mechanical unit is concentrated in the support body, while the electrical unit consists of a printed circuit board with microswitches mechanically and electrically connected to it. Both units are designed to be separable from one another. This allows a free choice of the arrangement of microswitches with unchanged design of the support body.
  • the key plungers of such a key switch have short actuation paths and require only low actuation forces.
  • Another major advantage is that relatively generous tolerances can be allowed for the arrangement of the microswitches on the circuit board, because the key tappet, even when actuated, never reaches the microswitch itself into its defined end position and could possibly damage it due to excessive pressure.
  • the actuating finger is provided, which is to be regarded as a length-compensating link between the microswitch and the key tappet.
  • a key set can be combined with an electronic circuit that can be actuated by microswitches, despite its externally large and conventional design.
  • An electronic circuit board can also be held directly on the support body, so that special electrical lines for the connection between the contact set and the printed circuit board can be omitted.
  • the advantage is also not insignificant that, in the event of a defect in the key switch, only the mechanical or only the electrical part has to be replaced, which may reduce the need for repairs.
  • the invention can be further developed in that the support body has at least three supports extending in the direction of the printed circuit board, of which at least two each have a contact surface with a defined distance from the actuating finger when the key tappet is triggered and at least one of the supports has a latching lug whose latching surface lies at a distance from the contact surfaces which is matched to the thickness of the printed circuit board.
  • This mechanical design of the support body for holding the printed circuit board enables it to be assembled and disassembled without the use of tools. To loosen the fastening of the circuit board, all that is required is the deflection of the support or supports provided with the latching lug; and the circuit board can be removed from the support body.
  • the printed circuit board has a defined position in relation to the actuating fingers of the key tappets, so that it is not possible to mix up the microswitches to be actuated with regard to the respective key tappets.
  • the actuating finger is designed as a pin guided in an axial bore of the key tappet and the spring is a compression spring arranged in the axial bore under the pin, this results in the assembly of the support body and for its connection to the printed circuit board cheapest and safest design because of its simplicity.
  • the key tappet 1 is held in the supporting body 2 and is guided in the longitudinal direction in its actuating direction.
  • the button plunger can be moved onto the microswitch 4.
  • the microswitch is soldered into a printed circuit board 5, which in turn is held on supports 6 of the supporting body 2 at a distance A from the key plunger 1 and by a support 7 with a locking lug 8 on the contact surfaces 9 of the supports 6.
  • the distance between the contact surfaces 9 of the supports 6 and that of the locking lug 8 is matched to the thickness D of the printed circuit board 5.
  • the key tappet 1 is pulled outwards on the one hand by a compression spring 10, but is held in a defined rest position by a switching heart 11 which works together with a sliding block 12 (only indicated schematically here).
  • An actuating finger 14 is guided in a coaxial bore 13 of the key tappet 1 and held in a defined position within the bore by a compression spring 15.
  • the button plunger 1 moves together with its actuating finger 14 towards the microswitch 4.
  • the spring 15 begins to tension under the actuating finger 14.
  • the tensioning force of the spring 15 exceeds the actuating force of the microswitch 4 during the further movement of the key tappet 1, the microswitch is switched. From this point on, the spring 15 continues to be tensioned by the actuating finger 14 until the key tappet 1 has reached its stop defined by the switching heart 11 and the setting 12. This stop is in any case still before reaching the microswitch 4 through the end face of the key tappet 1, if the key tappet can emerge from the support body 2 differently than shown here.
  • the key switch shown for example can also be designed without a switching heart 11 and a setting 12. Then the microswitch 4 is actuated only as long as the key plunger 1 is held down with its actuating finger 14.
  • the microswitches used can be set up with simple on or off switches, changeover switches or multiple switches and for switching low currents and voltages or even high currents (up to approx. 16 A) with household mains voltage (approx. 220 V).

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  • Push-Button Switches (AREA)

Abstract

The push-button plungers are held in the switching position by means of a mechanical latching device and are released from the switching position again by pressing the push-button plunger again. A contact set is allocated to each push-button plunger. The contact sets are constructed as microswitches and are arranged on a printed-circuit board which can be physically separated from the supporting body of the push-button plungers. Each push-button plunger has an operating finger which is guided displaceably in the operating direction of the push-button plunger. When the push-button plunger is released, said finger is held in front of the microswitch by means of a spring which acts in this direction. When the push-button plunger is operated, said finger presses onto the microswitch as a result of a spring tension, the spring tension being greater than the operating force required for the microswitch. As a result of these measures, the mechanical part of a push-button switch can be used without any change on any desired shapes of electrical circuits and on arrangements of microswitches which influence them. <IMAGE>

Description

Die Erfindung geht aus von einem Tastenschalter mit einem oder mehreren in einem Tragkörper geführten und gefederten Tastenstößeln mit einer definierten Endstellung und mit je einem Kontaktsatz je Tastenstößel.The invention relates to a key switch with one or more key tappets guided and sprung in a supporting body with a defined end position and with one set of contacts per key tappet.

Derartige Tastenschalter sind seit Jahren bekannt und üblich. Hierbei sind im Tragkörper durch die Tastenstößel betätigbare Kontaktsätze mechanisch eingegliedert, so daß bei Veränderung der Tastensätze deren Kontaktstücke gewechselt werden müssen. Die Kontaktstücke müssen außerdem über Anschlußfahnen und besondere Leitungen mit irgendwelchen elektrischen oder elektronischen Schaltungen verbunden werden.Such key switches have been known and customary for years. In this case, contact sets which can be actuated by the key tappets are mechanically incorporated in the support body, so that when the key sets are changed, their contact pieces have to be replaced. The contact pieces must also be connected to any electrical or electronic circuits via connection lugs and special lines.

Darüber hinaus sind aber auch Tastenschalter bekannt, bei denen die Anschlußfahnen der Kontaktsätze in Gruppen als Steckanschlüsse für Gruppenstecker ausgebildet sind. Beiden Arten von Kontaktsätzen ist der Nachteil eigen, daß die Schalter nicht in eine elektronische Leiterplatte integriert werden können und daß für die Betätigung der Tastenstößel große Betätigungskrafte aufgewendet und lange Betätigungswege überwunden werden müssen. Die Tastenstößel können dabei als einfach nichtrastende Tasten wirken oder mittels einer mechanischen Rasteinrichtung nach einmaligem Druck in Schaltstellung gehalten und durch erneuten Druck aus der Schaltstellung wieder gelöst werden.In addition, however, key switches are also known in which the terminal lugs of the contact sets are formed in groups as plug connections for group plugs are. Both types of contact sets have the disadvantage that the switches cannot be integrated into an electronic circuit board and that large actuation forces have to be expended for the actuation of the key tappets and long actuation distances have to be overcome. The key tappets can act as simply non-latching keys or can be held in the switching position after a single press by means of a mechanical latching device and can be released again from the switching position by pressing again.

Der Erfindung liegt die Aufgabe zugrunde, die beschriebenen Nachteile bei einem Tastenschalter der eingangs genannten Art dadurch zu vermeiden, daß für derartige Tastenschalter sogenannte Mikroschalter verwendet werden können.The invention has for its object to avoid the disadvantages described in a key switch of the type mentioned in that so-called microswitches can be used for such key switches.

Erfindungsgemäß wird diese Aufgabe dadurch gelöst, daß die Kontaktsätze als auf einer vom Tragkörper körperlich trennbaren Leiterplatte mechanisch und elektrisch verbundene Mikroschalter ausgebildet sind und daß jeder Tastenstößel für den zugeordneten Mikroschalter einen Betätigungsfinger aufweist, der an dem Tastenstößel in dessen Betätigungsrichtung verschieblich geführt und mittels einer in dieser Richtung wirkenden Feder bei ausgelöstem Tastenstößel frei vor dem Mikroschalter gehalten ist und bei betätigtem Tastenstößel unter einer Federspannung auf den Mikroschalter drückt, die größer ist als die für den Mikroschalter erforderliche Betätigungskraft.According to the invention this object is achieved in that the contact sets are designed as mechanically and electrically connected to a circuit board that is physically separable from the supporting body and that each key tappet for the associated microswitch has an actuating finger which is displaceably guided on the key tappet in its direction of actuation and by means of a this spring acting spring is held freely in front of the microswitch when the push button is triggered and presses the push button under a spring tension on the microswitch which is greater than the actuating force required for the microswitch.

Ein wesentlicher Vorteil des erfindungsgemäßen Tastenschalters gegenüber dem Stand der Technik besteht darin, daß die mechanische Einheit im Tragkörper konzentriert ist, während die elektrische Einheit aus einer Leiterplatte mit auf ihr mechanisch und elektrisch verbundenen Mikroschaltern besteht. Beide Einheiten sind voneinander trennbar ausgebildet. Dadurch ist eine freie Wahl der Anordnung von Mikroschaltern bei unveränderter Ausführung des Tragkörpers möglich. Außerdem haben die Tastenstößel eines solchen Tastenschalters kurze Betätigungswege und erfordern nur geringe Betätigungskräfte. Ein wesentlicher Vorteil liegt auch noch darin, daß für die Anordnung der Mikroschalter auf der Leiterplatte verhältnismäßig großzügige Toleranzen zugelassen werden können, weil der Tastenstößel selbst trotz Betätigung bis in seine definierte Endstellung nie den Mikroschalter selbst erreicht und ihn möglicherweise durch zu starken Druck beschädigen könnte. Zur mittelbaren Betätigung des Mikroschalters ist der Betätigungsfinger vorgesehen, der als längenausgleichendes Glied zwischen dem Mikroschalter und dem Tastenstößel anzusehen ist. Außerdem läßt sich ein solcher Tastensatz trotz seiner äußerlich großen und konventionell anmutenden Gestaltung mit einer von Mikroschaltern betätigbaren elektronischen Schaltung kombinieren. So kann auch eine elektronische Schaltungsplatine direkt am Tragkörper gehalten werden, so daß besondere elektrische Leitungen zur Verbindung zwischen dem Kontaktsatz und der Leiterplatte entfallen können.An important advantage of the key switch according to the invention over the prior art is that the mechanical unit is concentrated in the support body, while the electrical unit consists of a printed circuit board with microswitches mechanically and electrically connected to it. Both units are designed to be separable from one another. This allows a free choice of the arrangement of microswitches with unchanged design of the support body. In addition, the key plungers of such a key switch have short actuation paths and require only low actuation forces. Another major advantage is that relatively generous tolerances can be allowed for the arrangement of the microswitches on the circuit board, because the key tappet, even when actuated, never reaches the microswitch itself into its defined end position and could possibly damage it due to excessive pressure. For indirect actuation of the microswitch, the actuating finger is provided, which is to be regarded as a length-compensating link between the microswitch and the key tappet. In addition, such a key set can be combined with an electronic circuit that can be actuated by microswitches, despite its externally large and conventional design. An electronic circuit board can also be held directly on the support body, so that special electrical lines for the connection between the contact set and the printed circuit board can be omitted.

Nicht unwesentlich ist auch der Vorteil, daß im Falle eines Defekts am Tastenschalter nur der machanische oder nur der elektrische Teil ausgetauscht werden muß, was evtl. fällig werdende Reparaturen verbilligt.The advantage is also not insignificant that, in the event of a defect in the key switch, only the mechanical or only the electrical part has to be replaced, which may reduce the need for repairs.

In besonders vorteilhafter Weise läßt sich die Erfindung dadurch weiterbilden, daß der Tragkörper mindestens drei sich in Richtung auf die Leiterplatte erstreckende Stützen aufweist, von denen mindestens zwei je eine Anlagefläche mit definiertem Abstand zum Betätigungsfinger bei ausgelöstem Tastenstößel haben und mindestens eine der Stützen eine Rastnase aufweist, deren Rastfläche in einem auf die Dicke der Leiterplatte abgestimmten Abstand zu den Anlageflächen liegt. Durch diese mechanische Ausbildung des Tragkörpers zur Halterung der Leiterplatte läßt sich diese ohne Anwendung von Werkzeugen montieren und demontieren. Zum Lösen der Befestigung der Leiterplatte bedarf es nur der Auslenkung der mit der Rastnase versehenen Stütze oder Stützen; und schon läßt sich die Leiterplatte vom Tragkörper abnehmen. Bei entsprechend unsymmetrischer Ausbildung der Befestigungsanordnung hat die Leiterplatte eine definierte Position in bezug auf die Betätigunsfinger der Tastenstößel, so daß eine Verwechslung der jeweils zu betatigenden Mikroschalter im Hinblick auf die jeweiligen Tastenstößel nicht möglich ist.In a particularly advantageous manner, the invention can be further developed in that the support body has at least three supports extending in the direction of the printed circuit board, of which at least two each have a contact surface with a defined distance from the actuating finger when the key tappet is triggered and at least one of the supports has a latching lug whose latching surface lies at a distance from the contact surfaces which is matched to the thickness of the printed circuit board. This mechanical design of the support body for holding the printed circuit board enables it to be assembled and disassembled without the use of tools. To loosen the fastening of the circuit board, all that is required is the deflection of the support or supports provided with the latching lug; and the circuit board can be removed from the support body. With a correspondingly asymmetrical design of the fastening arrangement, the printed circuit board has a defined position in relation to the actuating fingers of the key tappets, so that it is not possible to mix up the microswitches to be actuated with regard to the respective key tappets.

Wenn der Betätigungsfinger gemäß einer weiteren vorteilhaften Ausbildung der Erfindung als ein in einer Axialbohrung des Tastenstößels geführter Stift ausgebildet ist und die Feder eine in der Axialbohrung unter dem Stift angeordnete Druckfeder ist, ergibt sich für den Zusammenbau des Tragkörpers und für seine Verbindung mit der Leiterplatte die günstigste und wegen ihrer Einfachheit sicherste Gestaltung.If, according to a further advantageous embodiment of the invention, the actuating finger is designed as a pin guided in an axial bore of the key tappet and the spring is a compression spring arranged in the axial bore under the pin, this results in the assembly of the support body and for its connection to the printed circuit board cheapest and safest design because of its simplicity.

Anhand des in der Zeichnung dargestellten Ausführungsbeispiels, das einen erfindungsgemäßen Tastenschalter in einem schematisch gehaltenen Schnitt entlang der Achse des Tastenstößels zeigt, ist die Erfindung nachstehend erläutert.The invention is explained below on the basis of the exemplary embodiment shown in the drawing, which shows a key switch according to the invention in a schematically held section along the axis of the key tappet.

Im Tragkörper 2 ist der Tastenstößel 1 gehalten und in seiner Betätigungsrichtung längsschubgeführt. Durch Druck auf seinen Tastenkopf 3 läßt sich der Tastenstößel auf den Mikroschalter 4 hin bewegen. Der Mikroschalter ist in eine Leiterplatte 5 eingelötet, die ihrerseits auf Stützen 6 des Tragkörpers 2 im Abstand A zum Tastenstößel 1 und durch eine Stütze 7 mit Rastnase 8 an den Anlageflächen 9 der Stützen 6 gehalten wird. Dazu ist der Abstand zwischen den Anlageflächen 9 der Stützen 6 und derjenigen der Rastnase 8 auf die Dicke D der Leiterplatte 5 abgestimmt. Der Tastenstößel 1 wird einerseits durch eine Druckfeder 10 auswärts gezogen, durch ein Schaltherz 11 aber, das mit einem Kulissenstein 12 zusammenarbeitet (hier nur schematisch angedeutet), in einer definierten Ruhestellung gehalten. In einer koaxialen Bohrung 13 des Tastenstößels 1 ist ein Betätigungsfinger 14 geführt und von einer Druckfeder 15 in einer definierten Stellung innerhalb der Bohrung gehalten.The key tappet 1 is held in the supporting body 2 and is guided in the longitudinal direction in its actuating direction. By pressing his button head 3, the button plunger can be moved onto the microswitch 4. The microswitch is soldered into a printed circuit board 5, which in turn is held on supports 6 of the supporting body 2 at a distance A from the key plunger 1 and by a support 7 with a locking lug 8 on the contact surfaces 9 of the supports 6. For this purpose, the distance between the contact surfaces 9 of the supports 6 and that of the locking lug 8 is matched to the thickness D of the printed circuit board 5. The key tappet 1 is pulled outwards on the one hand by a compression spring 10, but is held in a defined rest position by a switching heart 11 which works together with a sliding block 12 (only indicated schematically here). An actuating finger 14 is guided in a coaxial bore 13 of the key tappet 1 and held in a defined position within the bore by a compression spring 15.

Die Funktion des Tastenschalters sei nachstehend erläutert:The function of the key switch is explained below:

Beim Druck auf den Tastenkopf 3 bewegt sich der Tastenstößel 1 zusammen mit seinem Betätigungsfinger 14 auf den Mikroschalter 4 zu. Sobald der Betätigungsfinger 14 den Mikroschalter 4 berührt, beginnt sich die Feder 15 unter dem Betätigungsfinger 14 zu spannen. Sobald die Spannkraft der Feder 15 während der Weiterbewegung des Tastenstößels 1 die Betätigungskraft des Mikroschalters 4 übersteigt, wird der Mikroschalter geschaltet. Von diesem Zeitpunkt an wird die Feder 15 vom Betätigungsfinger 14 weiterhin gespannt, bis der Tastenstößel 1 seinen durch Schaltherz 11 und Kulisse 12 definierten Anschlag erreicht hat. Dieser Anschlag liegt jedenfalls noch vor dem Erreichen des Mikroschalters 4 durch die Stirnfläche des Tastenstößels 1, falls der Tastenstößel anders als hier dargestellt aus dem Tragkörper 2 austreten kann. Dadurch ist gewährleistet, daß der Mikroschalter 4 nicht vom Druck des Tastenstößels 1 überlastet werden kann. In dieser Schaltstellung wird der Tastenstößel durch Schaltherz 11 und Kulisse 12 gehalten. Bei erneutem Druck auf den Tastenkopf 3 wird diese Schaltstellung wieder aufgelöst; das nachfolgende Entlasten des Tastenkopfes 3 bringt den Tastenstößel unter Wirkung seiner Feder 11, wieder in die gezeichnete Position, in welcher der Betätigungsfinger 14 von seiner inzwischen wieder entspannten Feder 15 zurückgezogen wird und den Mikroschalter 4 entlastet.When the button head 3 is pressed, the button plunger 1 moves together with its actuating finger 14 towards the microswitch 4. As soon as the actuating finger 14 touches the microswitch 4, the spring 15 begins to tension under the actuating finger 14. As soon as the tensioning force of the spring 15 exceeds the actuating force of the microswitch 4 during the further movement of the key tappet 1, the microswitch is switched. From this point on, the spring 15 continues to be tensioned by the actuating finger 14 until the key tappet 1 has reached its stop defined by the switching heart 11 and the setting 12. This stop is in any case still before reaching the microswitch 4 through the end face of the key tappet 1, if the key tappet can emerge from the support body 2 differently than shown here. This ensures that the microswitch 4 cannot be overloaded by the pressure of the push button 1. In this switching position, the key tappet is held by the switching heart 11 and the setting 12. When you press again the button head 3 this switching position is released again; The subsequent unloading of the button head 3 brings the button plunger under the action of its spring 11 back into the position shown, in which the actuating finger 14 is withdrawn from its spring 15, which has now been relaxed again, and relieves the microswitch 4.

Der beispielsweise dargestellte Tastenschalter kann auch ohne Schaltherz 11 und Kulisse 12 ausgeführt sein. Dann wird der Mikroschalter 4 nur so lange betätigt, wie der Tastenstößel 1 mit seinem Betätigungsfinger 14 niedergehalten wird.The key switch shown for example can also be designed without a switching heart 11 and a setting 12. Then the microswitch 4 is actuated only as long as the key plunger 1 is held down with its actuating finger 14.

Die verwendeten Mikroschalter können einfache Aus- oder Einschalter, Umschalter oder Mehrfachtschalter und zum Schalten von niedrigen Strömen und Spannungen oder sogar von hohen Strömen (bis ca 16 A) mit Haushalts-Netzspannung (ca. 220 V) eingerichtet sein.The microswitches used can be set up with simple on or off switches, changeover switches or multiple switches and for switching low currents and voltages or even high currents (up to approx. 16 A) with household mains voltage (approx. 220 V).

Claims (3)

Tastenschalter mit einem oder mehreren in einem Tragkörper geführten und gefederten Tastenstößeln mit einer definierten Endstellung und mit je einem Kontaktsatz je Tastenstößel, dadurch gekennzeichnet, daß die Kontaktsätze als auf einer vom Tragkörper (2) körperlich trennbaren Leiterplatte (5) mechanisch und elektrisch verbundene Mikroschalter (4) ausgebildet sind und daß jeder Tastenstößel (1) für den zugeordneten Mikroschalter (4) einen Betätigungsfinger (14) aufweist, der an dem Tastenstößel in dessen Betätigungsrichtung verschieblich geführt und mittels einer in dieser Richtung wirkenden Feder (15) bei ausgelöstem Tastenstößel (1) frei vor dem Mikroschalter (4) gehalten ist und bei betätigtem Tastenstößel (1) unter einer Federspannung (der Feder 15) auf den Mikroschalter (4) drückt, die größer ist als die für den Mikroschalter erforderliche Betätigungskraft.Key switch with one or more spring tappets guided and suspended in a support body with a defined end position and with one contact set for each key tappet, characterized in that the contact sets as microswitches (5) which are mechanically and electrically connected to a circuit board (5) which is physically separable from the support body (2) ( 4) and that each key tappet (1) for the associated microswitch (4) has an actuating finger (14) which is displaceably guided on the key tappet in its actuating direction and by means of a spring (15) acting in this direction when the key tappet (1 ) is held freely in front of the microswitch (4) and presses the microswitch (4) under a spring tension (the spring 15) when the key tappet (1) is actuated, which is greater than the actuation force required for the microswitch. Tastenschalter nach Anspruch 1, dadurch gekennzeichnet, daß der Tragkörper (2) mindestens drei sich in Richtung auf die Leiterplatte (5) erstreckende Stützen (6, 7) aufweist, von denen mindestens zwei (6) je eine Anlagefläche (9) mit definiertem Abstand (A) zum Betätigungsfinger (14) bei ausgelöstem Tastenstößel (1) haben und mindestens eine (7) der Stützen eine Rastnase (8) aufweist, deren Rastfläche in einem auf die Dicke (D) der Leiterplatte (5) abgestimmten Abstand zu den Anlageflächen (9) liegt.Key switch according to claim 1, characterized in that the supporting body (2) has at least three supports (6, 7) extending in the direction of the printed circuit board (5), of which at least two (6) each have a contact surface (9) with a defined distance (A) to the actuating finger (14) when the key tappet is triggered (1) and at least one (7) of the supports has a latching lug (8), the latching surface of which is at a distance from the contact surfaces which is matched to the thickness (D) of the printed circuit board (5) (9) lies. Tastenschalter nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß der Betätigungsfinger (14) als ein in einer Axialbohrung (13) des Tastenstößels (1) geführter Stift ausgebildet ist und die Feder (15) eine in der Axialbohrung (13) unter dem Stift (14) angeordnete Druckfeder ist.Key switch according to Claim 1 or 2, characterized in that the actuating finger (14) is designed as a pin which is guided in an axial bore (13) of the key tappet (1) and the spring (15) is in the axial bore (13) below the pin ( 14) arranged compression spring.
EP91103229A 1990-04-03 1991-03-04 Push-button switch Revoked EP0450319B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4010746A DE4010746A1 (en) 1990-04-03 1990-04-03 KEY SWITCH
DE4010746 1990-04-03

Publications (3)

Publication Number Publication Date
EP0450319A2 true EP0450319A2 (en) 1991-10-09
EP0450319A3 EP0450319A3 (en) 1992-05-20
EP0450319B1 EP0450319B1 (en) 1995-07-12

Family

ID=6403670

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91103229A Revoked EP0450319B1 (en) 1990-04-03 1991-03-04 Push-button switch

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Country Link
EP (1) EP0450319B1 (en)
DE (3) DE9007536U1 (en)
ES (1) ES2077701T3 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001065580A1 (en) * 2000-02-29 2001-09-07 Siemens Aktiengesellschaft Auxiliary module for an electromechanical switchgear and corresponding electromechanical switchgear
WO2016142024A1 (en) * 2015-03-07 2016-09-15 Audi Ag Motor vehicle operating device with sound-generating switching element

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Publication number Priority date Publication date Assignee Title
US3072769A (en) * 1960-06-30 1963-01-08 Illinois Tool Works Control mechanism
US3657492A (en) * 1970-09-25 1972-04-18 Sperry Rand Corp Keyboard apparatus with moisture proof membrane
FR2348555A1 (en) * 1976-04-14 1977-11-10 Lucas Industries Ltd ELECTRICAL SWITCH WITH SLIDING CONTROL UNIT
DE3431703A1 (en) * 1983-09-01 1985-01-31 Alps Electric Co., Ltd., Tokio/Tokyo KEY SWITCH
DE8611125U1 (en) * 1986-04-23 1986-08-28 Bsg-Schalttechnik Gmbh & Co Kg, 72336 Balingen Step switch

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DE1883887U (en) * 1963-05-04 1963-12-05 Siemens Ag TILT DRIVE FOR LIMIT SWITCH.
SU581521A1 (en) * 1976-02-09 1977-11-25 Kayuk Lev G Push-button control
DE7927642U1 (en) * 1979-09-28 1980-01-24 Gebrueder Vestner Ohg, 8046 Garching Pushbutton, especially for the travel control of elevators

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Publication number Priority date Publication date Assignee Title
US3072769A (en) * 1960-06-30 1963-01-08 Illinois Tool Works Control mechanism
US3657492A (en) * 1970-09-25 1972-04-18 Sperry Rand Corp Keyboard apparatus with moisture proof membrane
FR2348555A1 (en) * 1976-04-14 1977-11-10 Lucas Industries Ltd ELECTRICAL SWITCH WITH SLIDING CONTROL UNIT
DE3431703A1 (en) * 1983-09-01 1985-01-31 Alps Electric Co., Ltd., Tokio/Tokyo KEY SWITCH
DE8611125U1 (en) * 1986-04-23 1986-08-28 Bsg-Schalttechnik Gmbh & Co Kg, 72336 Balingen Step switch

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001065580A1 (en) * 2000-02-29 2001-09-07 Siemens Aktiengesellschaft Auxiliary module for an electromechanical switchgear and corresponding electromechanical switchgear
WO2016142024A1 (en) * 2015-03-07 2016-09-15 Audi Ag Motor vehicle operating device with sound-generating switching element
CN107408472A (en) * 2015-03-07 2017-11-28 奥迪股份公司 Vehicle operation equipment with the switch element for producing sound
US10163591B2 (en) 2015-03-07 2018-12-25 Audi Ag Motor vehicle operating device with sound-generating switching element

Also Published As

Publication number Publication date
DE59105951D1 (en) 1995-08-17
ES2077701T3 (en) 1995-12-01
DE4010746A1 (en) 1991-10-10
EP0450319B1 (en) 1995-07-12
DE9007536U1 (en) 1992-05-14
EP0450319A3 (en) 1992-05-20

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